Initial revision

1 files changed, 1245 insertions, 0 deletions

diff --git a/core/launcher/transferserver.cpp b/core/launcher/transferserver.cpp
new file mode 100644
index 0000000..87a49eb
--- a/dev/null
+++ b/core/launcher/transferserver.cpp
@@ -0,0 +1,1245 @@
+/**********************************************************************
+** Copyright (C) 2000 Trolltech AS.  All rights reserved.
+**
+** This file is part of Qtopia Environment.
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+** See http://www.trolltech.com/gpl/ for GPL licensing information.
+**
+** Contact info@trolltech.com if any conditions of this licensing are
+** not clear to you.
+**
+**********************************************************************/
+#define _XOPEN_SOURCE
+#include <pwd.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#if defined(_OS_LINUX_)
+#include <shadow.h>
+#endif
+
+#include <qdir.h>
+#include <qfile.h>
+#include <qtextstream.h>
+#include <qdatastream.h>
+#include <qmessagebox.h>
+#include <qstringlist.h>
+#include <qfileinfo.h>
+#include <qregexp.h>
+//#include <qpe/qcopchannel_qws.h>
+#include <qpe/qprocess.h>
+#include <qpe/process.h>
+#include <qpe/config.h>
+#include <qpe/qcopenvelope_qws.h>
+
+#include "transferserver.h"
+
+const int block_size = 51200;
+
+TransferServer::TransferServer( Q_UINT16 port, QObject *parent = 0,
+        const char* name = 0)
+    : QServerSocket( port, 1, parent, name )
+{
+    if ( !ok() )
+        qWarning( "Failed to bind to port %d", port );
+}
+
+TransferServer::~TransferServer()
+{
+
+}
+
+void TransferServer::newConnection( int socket )
+{
+    (void) new ServerPI( socket, this );
+}
+
+bool accessAuthorized(QHostAddress peeraddress)
+{
+    Config cfg("Security");
+    cfg.setGroup("Sync");
+    uint auth_peer = cfg.readNumEntry("auth_peer",0xc0a80100);
+    uint auth_peer_bits = cfg.readNumEntry("auth_peer_bits",24);
+    bool ok = (peeraddress.ip4Addr() & (((1<<auth_peer_bits)-1)<<(32-auth_peer_bits)))
+                    == auth_peer;
+    /* Allows denial-of-service attack.
+    if ( !ok ) {
+        QMessageBox::warning(0,tr("Security"),
+            tr("<p>An attempt to access this device from %1 has been denied.")
+                .arg(peeraddress.toString()));
+    }
+    */
+    return ok;
+}
+
+ServerPI::ServerPI( int socket, QObject *parent = 0, const char* name = 0 )
+    : QSocket( parent, name ) , dtp( 0 ), serversocket( 0 ), waitsocket( 0 )
+{
+    state = Connected;
+
+    setSocket( socket );
+
+    peerport = peerPort();
+    peeraddress = peerAddress();
+
+#ifndef INSECURE
+    if ( !accessAuthorized(peeraddress) ) {
+        state = Forbidden;
+        startTimer( 0 );
+    } else
+        #endif
+    {
+        connect( this, SIGNAL( readyRead() ), SLOT( read() ) );
+        connect( this, SIGNAL( connectionClosed() ), SLOT( connectionClosed() ) );
+        
+        passiv = FALSE;
+        for( int i = 0; i < 4; i++ )
+            wait[i] = FALSE;
+
+        send( "220 Qtopia transfer service ready!" );
+        state = Wait_USER;
+
+        dtp = new ServerDTP( this );
+        connect( dtp, SIGNAL( completed() ), SLOT( dtpCompleted() ) );
+        connect( dtp, SIGNAL( failed() ), SLOT( dtpFailed() ) );
+        connect( dtp, SIGNAL( error( int ) ), SLOT( dtpError( int ) ) );
+
+
+        directory = QDir::currentDirPath();
+
+        static int p = 1024;
+
+        while ( !serversocket || !serversocket->ok() ) {
+            delete serversocket;
+            serversocket = new ServerSocket( ++p, this );
+        }
+        connect( serversocket, SIGNAL( newIncomming( int ) ),
+                 SLOT( newConnection( int ) ) );
+    }
+}
+
+ServerPI::~ServerPI()
+{
+
+}
+
+void ServerPI::connectionClosed()
+{
+    // qDebug( "Debug: Connection closed" );
+    delete this;
+}
+
+void ServerPI::send( const QString& msg )
+{
+    QTextStream os( this );
+    os << msg << endl;
+    //qDebug( "Reply: %s", msg.latin1() );
+}
+
+void ServerPI::read()
+{
+    while ( canReadLine() )
+        process( readLine().stripWhiteSpace() );
+}
+
+bool ServerPI::checkUser( const QString& user )
+{
+    if ( user.isEmpty() ) return FALSE;
+
+    struct passwd *pw;
+    pw = getpwuid( geteuid() );
+    QString euser = QString::fromLocal8Bit( pw->pw_name );
+    return user == euser;
+}
+
+bool ServerPI::checkPassword( const QString& /* password */ )
+{
+    // ### HACK for testing on local host
+    return true;
+
+    /*
+    struct passwd *pw = 0;
+    struct spwd *spw = 0;
+
+    pw = getpwuid( geteuid() );
+    spw = getspnam( pw->pw_name );
+
+    QString cpwd = QString::fromLocal8Bit( pw->pw_passwd );
+    if ( cpwd == "x" && spw )
+        cpwd = QString::fromLocal8Bit( spw->sp_pwdp );
+
+    QString cpassword = QString::fromLocal8Bit( crypt( password.local8Bit(), cpwd.local8Bit() ) );
+    return cpwd == cpassword;
+*/
+}
+
+bool ServerPI::checkReadFile( const QString& file )
+{
+    QString filename;
+
+    if ( file[0] != "/" )
+        filename = directory.path() + "/" + file;
+    else
+        filename = file;
+
+    QFileInfo fi( filename );
+    return ( fi.exists() && fi.isReadable() );
+}
+
+bool ServerPI::checkWriteFile( const QString& file )
+{
+    QString filename;
+
+    if ( file[0] != "/" )
+        filename = directory.path() + "/" + file;
+    else
+        filename = file;
+
+    QFileInfo fi( filename );
+
+    if ( fi.exists() )
+        if ( !QFile( filename ).remove() )
+            return FALSE;
+    return TRUE;
+}
+
+void ServerPI::process( const QString& message )
+{
+    //qDebug( "Command: %s", message.latin1() );
+
+    // split message using "," as separator
+    QStringList msg = QStringList::split( " ", message );
+    if ( msg.isEmpty() ) return;
+
+    // command token
+    QString cmd = msg[0].upper();
+
+    // argument token
+    QString arg;
+    if ( msg.count() >= 2 )
+        arg = msg[1];
+
+    // full argument string
+    QString args;
+    if ( msg.count() >= 2 ) {
+        QStringList copy( msg );
+        // FIXME: for Qt3
+        // copy.pop_front()
+        copy.remove( copy.begin() );
+        args = copy.join( " " );
+    }
+
+    //qDebug( "args: %s", args.latin1() );
+
+    // we always respond to QUIT, regardless of state
+    if ( cmd == "QUIT" ) {
+        send( "211 Good bye!" );
+        delete this;
+        return;
+    }
+
+    // connected to client
+    if ( Connected == state )
+        return;
+
+    // waiting for user name
+    if ( Wait_USER == state ) {
+
+        if ( cmd != "USER" || msg.count() < 2 || !checkUser( arg ) ) {
+            send( "530 Please login with USER and PASS" );
+            return;
+        }
+        send( "331 User name ok, need password" );
+        state = Wait_PASS;
+        return;
+    }
+
+    // waiting for password
+    if ( Wait_PASS == state ) {
+
+        if ( cmd != "PASS" || !checkPassword( arg ) ) {
+        //if ( cmd != "PASS" || msg.count() < 2 || !checkPassword( arg ) ) {
+            send( "530 Please login with USER and PASS" );
+            return;
+        }
+        send( "230 User logged in, proceed" );
+        state = Ready;
+        return;
+    }
+
+    // ACCESS CONTROL COMMANDS
+
+
+    // account (ACCT)
+    if ( cmd == "ACCT" ) {
+        // even wu-ftp does not support it
+        send( "502 Command not implemented" );
+    }
+
+    // change working directory (CWD)
+    else if ( cmd == "CWD" ) {
+
+        if ( !args.isEmpty() ) {
+            if ( directory.cd( args, TRUE ) )
+                send( "250 Requested file action okay, completed" );
+            else
+                send( "550 Requested action not taken" );
+        }
+        else
+            send( "500 Syntax error, command unrecognized" );
+    }
+
+    // change to parent directory (CDUP)
+    else if ( cmd == "CDUP" ) {
+        if ( directory.cdUp() )
+            send( "250 Requested file action okay, completed" );
+        else
+            send( "550 Requested action not taken" );
+    }
+
+    // structure mount (SMNT)
+    else if ( cmd == "SMNT" ) {
+        // even wu-ftp does not support it
+        send( "502 Command not implemented" );
+    }
+
+    // reinitialize (REIN)
+    else if ( cmd == "REIN" ) {
+        // even wu-ftp does not support it
+        send( "502 Command not implemented" );
+    }
+
+
+    // TRANSFER PARAMETER COMMANDS
+
+
+    // data port (PORT)
+    else if ( cmd == "PORT" ) {
+        if ( parsePort( arg ) )
+            send( "200 Command okay" );
+        else
+            send( "500 Syntax error, command unrecognized" );
+    }
+
+    // passive (PASV)
+    else if ( cmd == "PASV" ) {
+        passiv = TRUE;
+        send( "227 Entering Passive Mode ("
+              + address().toString().replace( QRegExp( "\\." ), "," ) + ","
+              + QString::number( ( serversocket->port() ) >> 8 ) + ","
+              + QString::number( ( serversocket->port() ) & 0xFF ) +")" );
+    }
+
+    // representation type (TYPE)
+    else if ( cmd == "TYPE" ) {
+        if ( arg.upper() == "A" || arg.upper() == "I" )
+            send( "200 Command okay" );
+        else
+            send( "504 Command not implemented for that parameter" );
+    }
+
+    // file structure (STRU)
+    else if ( cmd == "STRU" ) {
+        if ( arg.upper() == "F" )
+            send( "200 Command okay" );
+        else
+            send( "504 Command not implemented for that parameter" );
+    }
+
+    // transfer mode (MODE)
+    else if ( cmd == "MODE" ) {
+        if ( arg.upper() == "S" )
+            send( "200 Command okay" );
+        else
+            send( "504 Command not implemented for that parameter" );
+    }
+
+
+    // FTP SERVICE COMMANDS
+
+
+    // retrieve (RETR)
+    else if ( cmd == "RETR" )
+        if ( !args.isEmpty() && checkReadFile( absFilePath( args ) )
+             || backupRestoreGzip( absFilePath( args ) ) ) {
+            send( "150 File status okay" );
+            sendFile( absFilePath( args ) );
+        }
+        else {
+            qDebug("550 Requested action not taken");
+            send( "550 Requested action not taken" );
+        }
+
+    // store (STOR)
+    else if ( cmd == "STOR" )
+        if ( !args.isEmpty() && checkWriteFile( absFilePath( args ) ) ) {
+            send( "150 File status okay" );
+            retrieveFile( absFilePath( args ) );
+        }
+        else
+            send( "550 Requested action not taken" );
+
+    // store unique (STOU)
+    else if ( cmd == "STOU" ) {
+        send( "502 Command not implemented" );
+    }
+
+    // append (APPE)
+    else if ( cmd == "APPE" ) {
+        send( "502 Command not implemented" );
+    }
+
+    // allocate (ALLO)
+    else if ( cmd == "ALLO" ) {
+        send( "200 Command okay" );
+    }
+
+    // restart (REST)
+    else if ( cmd == "REST" ) {
+        send( "502 Command not implemented" );
+    }
+
+    // rename from (RNFR)
+    else if ( cmd == "RNFR" ) {
+        renameFrom = QString::null;
+        if ( args.isEmpty() )
+            send( "500 Syntax error, command unrecognized" );
+        else {
+            QFile file( absFilePath( args ) );
+            if ( file.exists() ) {
+                send( "350 File exists, ready for destination name" );
+                renameFrom = absFilePath( args );
+            }
+            else
+                send( "550 Requested action not taken" );
+        }
+    }
+
+    // rename to (RNTO)
+    else if ( cmd == "RNTO" ) {
+        if ( lastCommand != "RNFR" )
+            send( "503 Bad sequence of commands" );
+        else if ( args.isEmpty() )
+            send( "500 Syntax error, command unrecognized" );
+        else {
+            QDir dir( absFilePath( args ) );
+            if ( dir.rename( renameFrom, absFilePath( args ), TRUE ) )
+                send( "250 Requested file action okay, completed." );
+            else
+                send( "550 Requested action not taken" );
+        }
+    }
+
+    // abort (ABOR)
+    else if ( cmd.contains( "ABOR" ) ) {
+        dtp->close();
+        if ( dtp->dtpMode() != ServerDTP::Idle )
+            send( "426 Connection closed; transfer aborted" );
+        else
+            send( "226 Closing data connection" );
+    }
+
+    // delete (DELE)
+    else if ( cmd == "DELE" ) {
+        if ( args.isEmpty() )
+            send( "500 Syntax error, command unrecognized" );
+        else {
+            QFile file( absFilePath( args ) ) ;
+            if ( file.remove() )
+                send( "250 Requested file action okay, completed" );
+            else
+                send( "550 Requested action not taken" );
+        }
+    }
+
+    // remove directory (RMD)
+    else if ( cmd == "RMD" ) {
+        if ( args.isEmpty() )
+            send( "500 Syntax error, command unrecognized" );
+        else {
+            QDir dir;
+            if ( dir.rmdir( absFilePath( args ), TRUE ) )
+                send( "250 Requested file action okay, completed" );
+            else
+                send( "550 Requested action not taken" );
+        }
+    }
+
+    // make directory (MKD)
+    else if ( cmd == "MKD" ) {
+        if ( args.isEmpty() ) {
+            qDebug(" Error: no arg");
+            send( "500 Syntax error, command unrecognized" );
+        }
+        else {
+            QDir dir;
+            if ( dir.mkdir( absFilePath( args ), TRUE ) )
+                send( "250 Requested file action okay, completed." );
+            else
+                send( "550 Requested action not taken" );
+        }
+    }
+
+    // print working directory (PWD)
+    else if ( cmd == "PWD" ) {
+        send( "257 \"" + directory.path() +"\"" );
+    }
+
+    // list (LIST)
+    else if ( cmd == "LIST" ) {
+        if ( sendList( absFilePath( args ) ) )
+            send( "150 File status okay" );
+        else
+            send( "500 Syntax error, command unrecognized" );
+    }
+
+    // size (SIZE)
+    else if ( cmd == "SIZE" ) {
+        QString filePath = absFilePath( args );
+        QFileInfo fi( filePath );
+        bool gzipfile = backupRestoreGzip( filePath );
+        if ( !fi.exists() && !gzipfile )
+            send( "500 Syntax error, command unrecognized" );
+        else {
+            if ( !gzipfile )
+                send( "213 " + QString::number( fi.size() ) );
+            else {
+                Process duproc( QString("du") );
+                duproc.addArgument("-s");
+                QString in, out;
+                if ( !duproc.exec(in, out) ) {
+                    qDebug("du process failed; just sending back 1K");
+                    send( "213 1024");
+                }
+                else {
+                    QString size = out.left( out.find("\t") );
+                    int guess = size.toInt()/5;
+                    if ( filePath.contains("doc") )
+                        guess *= 1000;
+                    qDebug("sending back gzip guess of %d", guess);
+                    send( "213 " + QString::number(guess) );
+                }
+                    }           
+        }
+    }
+    // name list (NLST)
+    else if ( cmd == "NLST" ) {
+        send( "502 Command not implemented" );
+    }
+
+    // site parameters (SITE)
+    else if ( cmd == "SITE" ) {
+        send( "502 Command not implemented" );
+    }
+
+    // system (SYST)
+    else if ( cmd == "SYST" ) {
+        send( "215 UNIX Type: L8" );
+    }
+
+    // status (STAT)
+    else if ( cmd == "STAT" ) {
+        send( "502 Command not implemented" );
+    }
+
+    // help (HELP )
+    else if ( cmd == "HELP" ) {
+        send( "502 Command not implemented" );
+    }
+
+    // noop (NOOP)
+    else if ( cmd == "NOOP" ) {
+        send( "200 Command okay" );
+    }
+
+    // not implemented
+    else
+        send( "502 Command not implemented" );
+
+    lastCommand = cmd;
+}
+
+bool ServerPI::backupRestoreGzip( const QString &file )
+{
+    return (file.find( "backup" ) != -1 &&
+            file.findRev( ".tgz" ) == (int)file.length()-4 );
+}
+
+bool ServerPI::backupRestoreGzip( const QString &file, QStringList &targets )
+{
+  if ( file.find( "backup" ) != -1 &&
+       file.findRev( ".tgz" ) == (int)file.length()-4 ) {
+      QFileInfo info( file );
+      targets = info.dirPath( TRUE );
+      qDebug("ServerPI::backupRestoreGzip for %s = %s", file.latin1(),
+             targets.join(" ").latin1() );
+      return true;
+  }
+  return false;
+}
+
+void ServerPI::sendFile( const QString& file )
+{
+    if ( passiv ) {
+        wait[SendFile] = TRUE;
+        waitfile = file;
+        if ( waitsocket )
+            newConnection( waitsocket );
+    }
+    else {
+      QStringList targets;
+      if ( backupRestoreGzip( file, targets ) )
+          dtp->sendGzipFile( file, targets, peeraddress, peerport );
+      else dtp->sendFile( file, peeraddress, peerport );
+    }
+}
+
+void ServerPI::retrieveFile( const QString& file )
+{
+    if ( passiv ) {
+        wait[RetrieveFile] = TRUE;
+        waitfile = file;
+        if ( waitsocket )
+            newConnection( waitsocket );
+    }
+    else {
+      QStringList targets;
+      if ( backupRestoreGzip( file, targets ) )
+        dtp->retrieveGzipFile( file, peeraddress, peerport );
+      else
+        dtp->retrieveFile( file, peeraddress, peerport );
+    }
+}
+
+bool ServerPI::parsePort( const QString& pp )
+{
+    QStringList p = QStringList::split( ",", pp );
+    if ( p.count() != 6 ) return FALSE;
+
+    // h1,h2,h3,h4,p1,p2
+    peeraddress = QHostAddress( ( p[0].toInt() << 24 ) + ( p[1].toInt() << 16 ) +
+                                ( p[2].toInt() << 8 ) + p[3].toInt() );
+    peerport = ( p[4].toInt() << 8 ) + p[5].toInt();
+    return TRUE;
+}
+
+void ServerPI::dtpCompleted()
+{
+    dtp->close();
+    waitsocket = 0;
+    send( "226 Closing data connection, file transfer successful" );
+}
+
+void ServerPI::dtpFailed()
+{
+    dtp->close();
+    waitsocket = 0;
+    send( "451 Requested action aborted: local error in processing" );
+}
+
+void ServerPI::dtpError( int )
+{
+    dtp->close();
+    waitsocket = 0;
+    send( "451 Requested action aborted: local error in processing" );
+}
+
+bool ServerPI::sendList( const QString& arg )
+{
+    QByteArray listing;
+    QBuffer buffer( listing );
+
+    if ( !buffer.open( IO_WriteOnly ) )
+        return FALSE;
+
+    QTextStream ts( &buffer );
+    QString fn = arg;
+
+    if ( fn.isEmpty() )
+        fn = directory.path();
+
+    QFileInfo fi( fn );
+    if ( !fi.exists() ) return FALSE;
+
+    // return file listing
+    if ( fi.isFile() ) {
+        ts << fileListing( &fi ) << endl;
+    }
+
+    // return directory listing
+    else if ( fi.isDir() ) {
+        QDir dir( fn );
+        const QFileInfoList *list = dir.entryInfoList( QDir::All | QDir::Hidden );
+
+        QFileInfoListIterator it( *list );
+        QFileInfo *info;
+
+        unsigned long total = 0;
+        while ( ( info = it.current() ) ) {
+            if ( info->fileName() != "." && info->fileName() != ".." )
+                total += info->size();
+            ++it;
+        }
+
+        ts << "total " << QString::number( total / 1024 ) << endl;
+
+        it.toFirst();
+        while ( ( info = it.current() ) ) {
+            if ( info->fileName() == "." || info->fileName() == ".." ) {
+                ++it;
+                continue;
+            }
+            ts << fileListing( info ) << endl;
+            ++it;
+        }
+    }
+
+    if ( passiv ) {
+        waitarray = buffer.buffer();
+        wait[SendByteArray] = TRUE;
+        if ( waitsocket )
+            newConnection( waitsocket );
+    }
+    else
+        dtp->sendByteArray( buffer.buffer(), peeraddress, peerport );
+    return TRUE;
+}
+
+QString ServerPI::fileListing( QFileInfo *info )
+{
+    if ( !info ) return QString::null;
+    QString s;
+
+    // type char
+    if ( info->isDir() )
+        s += "d";
+    else if ( info->isSymLink() )
+        s += "l";
+    else
+        s += "-";
+
+    // permisson string
+    s += permissionString( info ) + " ";
+
+    // number of hardlinks
+    int subdirs = 1;
+
+    if ( info->isDir() )
+        subdirs = 2;
+    // FIXME : this is to slow
+    //if ( info->isDir() )
+    //subdirs = QDir( info->absFilePath() ).entryList( QDir::Dirs ).count();
+
+    s += QString::number( subdirs ).rightJustify( 3, ' ', TRUE ) + " ";
+
+    // owner
+    s += info->owner().leftJustify( 8, ' ', TRUE ) + " ";
+
+    // group
+    s += info->group().leftJustify( 8, ' ', TRUE ) + " ";
+
+    // file size in bytes
+    s += QString::number( info->size() ).rightJustify( 9, ' ', TRUE ) + " ";
+
+    // last modified date
+    QDate date = info->lastModified().date();
+    QTime time = info->lastModified().time();
+    s += date.monthName( date.month() ) + " "
+         + QString::number( date.day() ).rightJustify( 2, ' ', TRUE ) + " "
+         + QString::number( time.hour() ).rightJustify( 2, '0', TRUE ) + ":"
+         + QString::number( time.minute() ).rightJustify( 2,'0', TRUE ) + " ";
+
+    // file name
+    s += info->fileName();
+
+    return s;
+}
+
+QString ServerPI::permissionString( QFileInfo *info )
+{
+    if ( !info ) return QString( "---------" );
+    QString s;
+
+    // user
+    if ( info->permission( QFileInfo::ReadUser ) ) s += "r";
+    else s += "-";
+    if ( info->permission( QFileInfo::WriteUser ) ) s += "w";
+    else s += "-";
+    if ( info->permission( QFileInfo::ExeUser ) ) s += "x";
+    else s += "-";
+
+    // group
+    if ( info->permission( QFileInfo::ReadGroup ) ) s += "r";
+    else s += "-";
+    if ( info->permission( QFileInfo::WriteGroup ) )s += "w";
+    else s += "-";
+    if ( info->permission( QFileInfo::ExeGroup ) ) s += "x";
+    else s += "-";
+
+    // exec
+    if ( info->permission( QFileInfo::ReadOther ) ) s += "r";
+    else s += "-";
+    if ( info->permission( QFileInfo::WriteOther ) ) s += "w";
+    else s += "-";
+    if ( info->permission( QFileInfo::ExeOther ) ) s += "x";
+    else s += "-";
+
+    return s;
+}
+
+void ServerPI::newConnection( int socket )
+{
+    //qDebug( "New incomming connection" );
+
+    if ( !passiv ) return;
+
+    if ( wait[SendFile] ) {
+        QStringList targets;
+        if ( backupRestoreGzip( waitfile, targets ) )
+            dtp->sendGzipFile( waitfile, targets );
+        else
+            dtp->sendFile( waitfile );
+        dtp->setSocket( socket );
+    }
+    else if ( wait[RetrieveFile] ) {
+      qDebug("check retrieve file");
+      if ( backupRestoreGzip( waitfile ) )
+        dtp->retrieveGzipFile( waitfile );
+      else
+        dtp->retrieveFile( waitfile );
+      dtp->setSocket( socket );
+    }
+    else if ( wait[SendByteArray] ) {
+        dtp->sendByteArray( waitarray );
+        dtp->setSocket( socket );
+    }
+    else if ( wait[RetrieveByteArray] ) {
+        qDebug("retrieve byte array");
+        dtp->retrieveByteArray();
+        dtp->setSocket( socket );
+    }
+    else
+        waitsocket = socket;
+
+    for( int i = 0; i < 4; i++ )
+        wait[i] = FALSE;
+}
+
+QString ServerPI::absFilePath( const QString& file )
+{
+    if ( file.isEmpty() ) return file;
+
+    QString filepath( file );
+    if ( file[0] != "/" )
+        filepath = directory.path() + "/" + file;
+
+    return filepath;
+}
+
+
+void ServerPI::timerEvent( QTimerEvent * )
+{
+    connectionClosed();
+}
+
+
+ServerDTP::ServerDTP( QObject *parent = 0, const char* name = 0)
+  : QSocket( parent, name ), mode( Idle ), createTargzProc( 0 ),
+retrieveTargzProc( 0 ), gzipProc( 0 )
+{
+
+  connect( this, SIGNAL( connected() ), SLOT( connected() ) );
+  connect( this, SIGNAL( connectionClosed() ), SLOT( connectionClosed() ) );
+  connect( this, SIGNAL( bytesWritten( int ) ), SLOT( bytesWritten( int ) ) );
+  connect( this, SIGNAL( readyRead() ), SLOT( readyRead() ) );
+
+  gzipProc = new QProcess( this, "gzipProc" );
+  gzipProc->setCommunication( QProcess::Stdin | QProcess::Stdout );
+
+  createTargzProc = new QProcess( QString("tar"), this, "createTargzProc");
+  createTargzProc->setCommunication( QProcess::Stdout );
+  createTargzProc->setWorkingDirectory( QDir::rootDirPath() );
+  connect( createTargzProc, SIGNAL( processExited() ), SLOT( targzDone() ) );
+
+  QStringList args = "tar";
+  args += "-xv";
+  retrieveTargzProc = new QProcess( args, this, "retrieveTargzProc" );
+  retrieveTargzProc->setCommunication( QProcess::Stdin );
+  retrieveTargzProc->setWorkingDirectory( QDir::rootDirPath() );
+  connect( retrieveTargzProc, SIGNAL( processExited() ),
+           SIGNAL( completed() ) );
+  connect( retrieveTargzProc, SIGNAL( processExited() ),
+           SLOT( extractTarDone() ) );
+}
+
+ServerDTP::~ServerDTP()
+{
+    buf.close();
+    file.close();
+    createTargzProc->kill();
+}
+
+void ServerDTP::extractTarDone()
+{
+    qDebug("extract done");
+    QCopEnvelope e( "QPE/Desktop", "restoreDone(QString)" );
+    e << file.name();
+}
+
+void ServerDTP::connected()
+{
+  // send file mode
+  switch ( mode ) {
+  case SendFile :
+    if ( !file.exists() || !file.open( IO_ReadOnly) ) {
+      emit failed();
+      mode = Idle;
+      return;
+    }
+
+    //qDebug( "Debug: Sending file '%s'", file.name().latin1() );
+
+    bytes_written = 0;
+    if ( file.size() == 0 ) {
+      //make sure it doesn't hang on empty files
+      file.close();
+      emit completed();
+      mode = Idle;
+    } else {
+
+      if( !file.atEnd() ) {
+        QCString s;
+        s.resize( block_size );
+        int bytes = file.readBlock( s.data(), block_size );
+        writeBlock( s.data(), bytes );
+      }
+    }
+    break;
+  case SendGzipFile:
+    if ( createTargzProc->isRunning() ) {
+      // SHOULDN'T GET HERE, BUT DOING A SAFETY CHECK ANYWAY
+      qWarning("Previous tar --gzip process is still running; killing it...");
+      createTargzProc->kill();
+    }
+
+    bytes_written = 0;
+    qDebug("==>start send tar process");
+    if ( !createTargzProc->start() )
+      qWarning("Error starting %s or %s",
+               createTargzProc->arguments().join(" ").latin1(),
+               gzipProc->arguments().join(" ").latin1() );
+    break;
+  case SendBuffer:
+    if ( !buf.open( IO_ReadOnly) ) {
+      emit failed();
+      mode = Idle;
+      return;
+    }
+
+    // qDebug( "Debug: Sending byte array" );
+    bytes_written = 0;
+    while( !buf.atEnd() )
+      putch( buf.getch() );
+    buf.close();
+    break;
+  case RetrieveFile:
+    // retrieve file mode
+    if ( file.exists() && !file.remove() ) {
+      emit failed();
+      mode = Idle;
+      return;
+    }
+
+    if ( !file.open( IO_WriteOnly) ) {
+      emit failed();
+      mode = Idle;
+      return;
+    }
+    // qDebug( "Debug: Retrieving file %s", file.name().latin1() );
+    break;
+  case RetrieveGzipFile:
+    qDebug("=-> starting tar process to receive .tgz file");
+    break;
+  case RetrieveBuffer:
+    // retrieve buffer mode
+    if ( !buf.open( IO_WriteOnly) ) {
+      emit failed();
+      mode = Idle;
+      return;
+    }
+    // qDebug( "Debug: Retrieving byte array" );
+    break;
+  case Idle:
+    qDebug("connection established but mode set to Idle; BUG!");
+    break;
+  }
+}
+
+void ServerDTP::connectionClosed()
+{
+    //qDebug( "Debug: Data connection closed %ld bytes written", bytes_written );
+
+    // send file mode
+    if ( SendFile == mode ) {
+        if ( bytes_written == file.size() )
+            emit completed();
+        else
+            emit failed();
+    }
+
+    // send buffer mode
+    else if ( SendBuffer == mode ) {
+        if ( bytes_written == buf.size() )
+            emit completed();
+        else
+            emit failed();
+    }
+
+    // retrieve file mode
+    else if ( RetrieveFile == mode ) {
+        file.close();
+        emit completed();
+    }
+
+    else if ( RetrieveGzipFile == mode ) {
+        qDebug("Done writing ungzip file; closing input");
+        gzipProc->flushStdin();
+        gzipProc->closeStdin();
+    }
+
+    // retrieve buffer mode
+    else if ( RetrieveBuffer == mode ) {
+        buf.close();
+        emit completed();
+    }
+
+    mode = Idle;
+}
+
+void ServerDTP::bytesWritten( int bytes )
+{
+    bytes_written += bytes;
+
+    // send file mode
+    if ( SendFile == mode ) {
+
+        if ( bytes_written == file.size() ) {
+            // qDebug( "Debug: Sending complete: %d bytes", file.size() );
+            file.close();
+            emit completed();
+            mode = Idle;
+        }
+        else if( !file.atEnd() ) {
+            QCString s;
+            s.resize( block_size );
+            int bytes = file.readBlock( s.data(), block_size );
+            writeBlock( s.data(), bytes );
+        }
+    }
+
+    // send buffer mode
+    if ( SendBuffer == mode ) {
+
+        if ( bytes_written == buf.size() ) {
+            // qDebug( "Debug: Sending complete: %d bytes", buf.size() );
+            emit completed();
+            mode = Idle;
+        }
+    }
+}
+
+void ServerDTP::readyRead()
+{
+    // retrieve file mode
+    if ( RetrieveFile == mode ) {
+        QCString s;
+        s.resize( bytesAvailable() );
+        readBlock( s.data(), bytesAvailable() );
+        file.writeBlock( s.data(), s.size() );
+    }
+    else if ( RetrieveGzipFile == mode ) {
+        if ( !gzipProc->isRunning() )
+            gzipProc->start();
+        
+              QByteArray s;
+        s.resize( bytesAvailable() );
+        readBlock( s.data(), bytesAvailable() );
+        gzipProc->writeToStdin( s );
+        qDebug("wrote %d bytes to ungzip ", s.size() );
+    }
+    // retrieve buffer mode
+    else if ( RetrieveBuffer == mode ) {
+        QCString s;
+        s.resize( bytesAvailable() );
+        readBlock( s.data(), bytesAvailable() );
+        buf.writeBlock( s.data(), s.size() );
+    }
+}
+
+void ServerDTP::writeTargzBlock()
+{
+    QByteArray block = gzipProc->readStdout();
+    writeBlock( block.data(), block.size() );
+    qDebug("writeTargzBlock %d", block.size());
+    if ( !createTargzProc->isRunning() ) {
+        qDebug("tar and gzip done");
+        emit completed();
+        mode = Idle;
+        disconnect( gzipProc, SIGNAL( readyReadStdout() ),
+                    this, SLOT( writeTargzBlock() ) );
+    }
+}
+
+void ServerDTP::targzDone()
+{
+    //qDebug("targz done");
+    disconnect( createTargzProc, SIGNAL( readyReadStdout() ),
+                this, SLOT( gzipTarBlock() ) );
+    gzipProc->closeStdin();
+}
+
+void ServerDTP::gzipTarBlock()
+{
+    //qDebug("gzipTarBlock");
+    if ( !gzipProc->isRunning() ) {
+        //qDebug("auto start gzip proc");
+        gzipProc->start();
+    }
+    gzipProc->writeToStdin( createTargzProc->readStdout() );
+}
+
+void ServerDTP::sendFile( const QString fn, const QHostAddress& host, Q_UINT16 port )
+{
+    file.setName( fn );
+    mode = SendFile;
+    connectToHost( host.toString(), port );
+}
+
+void ServerDTP::sendFile( const QString fn )
+{
+    file.setName( fn );
+    mode = SendFile;
+}
+
+void ServerDTP::sendGzipFile( const QString &fn,
+                              const QStringList &archiveTargets,
+                              const QHostAddress& host, Q_UINT16 port )
+{
+    sendGzipFile( fn, archiveTargets );
+    connectToHost( host.toString(), port );
+}
+
+void ServerDTP::sendGzipFile( const QString &fn,
+                              const QStringList &archiveTargets  )
+{
+    mode = SendGzipFile;
+    file.setName( fn );
+
+    QStringList args = "tar";
+    args += "-cv";
+    args += archiveTargets;
+    qDebug("sendGzipFile %s", args.join(" ").latin1() );
+    createTargzProc->setArguments( args );
+    connect( createTargzProc,
+             SIGNAL( readyReadStdout() ), SLOT( gzipTarBlock() ) );
+
+            gzipProc->setArguments( "gzip" );
+    connect( gzipProc, SIGNAL( readyReadStdout() ),
+             SLOT( writeTargzBlock() ) );
+}
+
+void ServerDTP::gunzipDone()
+{
+    qDebug("gunzipDone");
+    disconnect( gzipProc, SIGNAL( processExited() ),
+                this, SLOT( gunzipDone() ) );
+    retrieveTargzProc->closeStdin();
+    disconnect( gzipProc, SIGNAL( readyReadStdout() ),
+                    this, SLOT( tarExtractBlock() ) );
+}
+
+void ServerDTP::tarExtractBlock()
+{
+    qDebug("ungzipTarBlock");
+    if ( !retrieveTargzProc->isRunning() ) {
+        qDebug("auto start ungzip proc");
+        if ( !retrieveTargzProc->start() )
+            qWarning(" failed to start tar -x process");
+    }
+    retrieveTargzProc->writeToStdin( gzipProc->readStdout() );
+}
+
+
+void ServerDTP::retrieveFile( const QString fn, const QHostAddress& host, Q_UINT16 port )
+{
+    file.setName( fn );
+    mode = RetrieveFile;
+    connectToHost( host.toString(), port );
+}
+
+void ServerDTP::retrieveFile( const QString fn )
+{
+    file.setName( fn );
+    mode = RetrieveFile;
+}
+
+void ServerDTP::retrieveGzipFile( const QString &fn )
+{
+    qDebug("retrieveGzipFile %s", fn.latin1());
+    file.setName( fn );
+    mode = RetrieveGzipFile;
+
+            gzipProc->setArguments( "gunzip" );
+    connect( gzipProc, SIGNAL( readyReadStdout() ),
+             SLOT( tarExtractBlock() ) );
+    connect( gzipProc, SIGNAL( processExited() ),
+             SLOT( gunzipDone() ) );
+}
+
+void ServerDTP::retrieveGzipFile( const QString &fn, const QHostAddress& host, Q_UINT16 port )
+{
+    retrieveGzipFile( fn );
+    connectToHost( host.toString(), port );
+}
+
+void ServerDTP::sendByteArray( const QByteArray& array, const QHostAddress& host, Q_UINT16 port )
+{
+    buf.setBuffer( array );
+    mode = SendBuffer;
+    connectToHost( host.toString(), port );
+}
+
+void ServerDTP::sendByteArray( const QByteArray& array )
+{
+    buf.setBuffer( array );
+    mode = SendBuffer;
+}
+
+void ServerDTP::retrieveByteArray( const QHostAddress& host, Q_UINT16 port )
+{
+    buf.setBuffer( QByteArray() );
+    mode = RetrieveBuffer;
+    connectToHost( host.toString(), port );
+}
+
+void ServerDTP::retrieveByteArray()
+{
+    buf.setBuffer( QByteArray() );
+    mode = RetrieveBuffer;
+}
+
+void ServerDTP::setSocket( int socket )
+{
+    QSocket::setSocket( socket );
+    connected();
+}
+