Start work on a new launcher. This commit is simply a minimal Opie QWS server.

1 files changed, 1424 insertions, 0 deletions

diff --git a/core/qws/transferserver.cpp b/core/qws/transferserver.cpp
new file mode 100644
index 0000000..0337a94
--- a/dev/null
+++ b/core/qws/transferserver.cpp
@@ -0,0 +1,1424 @@
+/**********************************************************************
+** Copyright (C) 2000-2002 Trolltech AS.  All rights reserved.
+**
+** This file is part of the 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>
+#include <time.h>
+#include <shadow.h>
+
+/* we need the _OS_LINUX stuff first ! */
+#include <qglobal.h>
+
+#ifndef  _OS_LINUX_
+
+extern "C"
+{
+#include <uuid/uuid.h>
+#define UUID_H_INCLUDED
+}
+
+#endif // not defined linux
+
+#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/process.h>
+#include <qpe/global.h>
+#include <qpe/config.h>
+#include <qpe/contact.h>
+#include <qpe/quuid.h>
+#include <qpe/version.h>
+#include <qpe/qcopenvelope_qws.h>
+
+#include "transferserver.h"
+#include <opie/oprocess.h>
+
+const int block_size = 51200;
+
+TransferServer::TransferServer( Q_UINT16 port, QObject *parent ,
+                                const char* name )
+                : 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 );
+}
+
+/*
+ * small class in anonymous namespace
+ * to generate a QUUid for us
+ */
+namespace
+{
+struct UidGen
+{
+        QString uuid();
+};
+#if !defined(_OS_LINUX_)
+
+QString UidGen::uuid()
+{
+        uuid_t uuid;
+        uuid_generate( uuid );
+        return QUUid( uuid ).toString();
+}
+#else
+/*
+* linux got a /proc/sys/kernel/random/uuid file
+* it'll generate the uuids for us
+*/
+QString UidGen::uuid()
+{
+        QFile file( "/proc/sys/kernel/random/uuid" );
+        if (!file.open(IO_ReadOnly ) )
+                return QString::null;
+
+        QTextStream stream(&file);
+
+        return "{" + stream.read().stripWhiteSpace() + "}";
+}
+#endif
+}
+
+QString SyncAuthentication::serverId()
+{
+        Config cfg("Security");
+        cfg.setGroup("Sync");
+        QString r = cfg.readEntry("serverid");
+        if ( r.isEmpty() ) {
+                UidGen gen;
+                r = gen.uuid();
+                cfg.writeEntry("serverid", r );
+        }
+        return r;
+}
+
+QString SyncAuthentication::ownerName()
+{
+        QString vfilename = Global::applicationFileName("addressbook",
+                            "businesscard.vcf");
+        if (QFile::exists(vfilename)) {
+                Contact c;
+                c = Contact::readVCard( vfilename )[0];
+                return c.fullName();
+        }
+
+        return "";
+}
+
+QString SyncAuthentication::loginName()
+{
+        struct passwd *pw;
+        pw = getpwuid( geteuid() );
+        return QString::fromLocal8Bit( pw->pw_name );
+}
+
+int SyncAuthentication::isAuthorized(QHostAddress peeraddress)
+{
+        Config cfg("Security");
+        cfg.setGroup("Sync");
+        //    QString allowedstr = cfg.readEntry("auth_peer","192.168.1.0");
+        uint auth_peer = cfg.readNumEntry("auth_peer", 0xc0a80100);
+
+        //    QHostAddress allowed;
+        //    allowed.setAddress(allowedstr);
+        //    uint auth_peer = allowed.ip4Addr();
+        uint auth_peer_bits = cfg.readNumEntry("auth_peer_bits", 24);
+        uint mask = auth_peer_bits >= 32 // shifting by 32 is not defined
+                    ? 0xffffffff : (((1 << auth_peer_bits) - 1) << (32 - auth_peer_bits));
+        return (peeraddress.ip4Addr() & mask) == auth_peer;
+}
+
+bool SyncAuthentication::checkUser( const QString& user )
+{
+        if ( user.isEmpty() )
+                return FALSE;
+        QString euser = loginName();
+        return user == euser;
+}
+
+bool SyncAuthentication::checkPassword( const QString& password )
+{
+#ifdef ALLOW_UNIX_USER_FTP
+        // First, check system password...
+
+        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 );
+
+        // Note: some systems use more than crypt for passwords.
+        QString cpassword = QString::fromLocal8Bit( crypt( password.local8Bit(), cpwd.local8Bit() ) );
+        if ( cpwd == cpassword )
+                return TRUE;
+#endif
+
+        static int lastdenial = 0;
+        static int denials = 0;
+        int now = time(0);
+
+        // Detect old Qtopia Desktop (no password)
+        if ( password.isEmpty() ) {
+                if ( denials < 1 || now > lastdenial + 600 ) {
+                        QMessageBox::warning( 0, tr("Sync Connection"),
+                                              tr("<p>An unauthorized system is requesting access to this device."
+                                                 "<p>If you are using a version of Qtopia Desktop older than 1.5.1, "
+                                                 "please upgrade."),
+                                              tr("Deny") );
+                        denials++;
+                        lastdenial = now;
+                }
+                return FALSE;
+        }
+
+        // Second, check sync password...
+        QString pass = password.left(6);
+        /* old QtopiaDesktops are sending
+         * rootme newer versions got a Qtopia
+         * prefixed. Qtopia prefix will suceed
+         * until the sync software syncs up
+         * FIXME
+         */
+        if ( pass == "rootme" || pass == "Qtopia") {
+
+                QString cpassword = QString::fromLocal8Bit( crypt( password.mid(8).local8Bit(), "qp" ) );
+                Config cfg("Security");
+                cfg.setGroup("Sync");
+                QString pwds = cfg.readEntry("Passwords");
+                if ( QStringList::split(QChar(' '), pwds).contains(cpassword) )
+                        return TRUE;
+
+                // Unrecognized system. Be careful...
+
+                if ( (denials > 2 && now < lastdenial + 600)
+                        || QMessageBox::warning(0, tr("Sync Connection"),
+                                                tr("<p>An unrecognized system is requesting access to this device."
+                                                   "<p>If you have just initiated a Sync for the first time, this is normal."),
+                                                tr("Allow"), tr("Deny"), 0, 1, 1 ) == 1 ) {
+                        denials++;
+                        lastdenial = now;
+                        return FALSE;
+                }
+                else {
+                        denials = 0;
+                        cfg.writeEntry("Passwords", pwds + " " + cpassword);
+                        return TRUE;
+                }
+        }
+
+        return FALSE;
+}
+
+ServerPI::ServerPI( int socket, QObject *parent , const char* name )
+                : QSocket( parent, name ) , dtp( 0 ), serversocket( 0 ), waitsocket( 0 )
+{
+        state = Connected;
+
+        setSocket( socket );
+
+        peerport = peerPort();
+        peeraddress = peerAddress();
+
+#ifndef INSECURE
+
+        if ( !SyncAuthentication::isAuthorized(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 " QPE_VERSION " FTP Server" );
+                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::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 || !SyncAuthentication::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" || !SyncAuthentication::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" );
+                                QCopEnvelope e("QPE/System", "linkChanged(QString)" );
+                                e << file.name();
+                        }
+                        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()
+{
+        send( "226 Closing data connection, file transfer successful" );
+        if ( dtp->dtpMode() == ServerDTP::RetrieveFile ) {
+                QString fn = dtp->fileName();
+                if ( fn.right(8) == ".desktop" && fn.find("/Documents/") >= 0 ) {
+                        QCopEnvelope e("QPE/System", "linkChanged(QString)" );
+                        e << fn;
+                }
+        }
+        waitsocket = 0;
+        dtp->close();
+}
+
+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, const char* name)
+                : 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 OProcess( this, "gzipProc" );
+
+        createTargzProc = new OProcess( QString("tar"), this, "createTargzProc");
+        createTargzProc->setWorkingDirectory( QDir::rootDirPath() );
+        connect( createTargzProc, SIGNAL( processExited(OProcess *) ), SLOT( targzDone() ) );
+
+        QStringList args = "tar";
+        args += "-xv";
+        retrieveTargzProc = new OProcess( args, this, "retrieveTargzProc" );
+        retrieveTargzProc->setWorkingDirectory( QDir::rootDirPath() );
+        connect( retrieveTargzProc, SIGNAL( processExited(OProcess *) ),
+                 SIGNAL( completed() ) );
+        connect( retrieveTargzProc, SIGNAL( processExited(OProcess *) ),
+                 SLOT( extractTarDone() ) );
+}
+
+ServerDTP::~ServerDTP()
+{
+        buf.close();
+        file.close();
+        createTargzProc->kill();
+}
+
+void ServerDTP::extractTarDone()
+{
+        qDebug("extract done");
+#ifndef QT_NO_COP
+
+        QCopEnvelope e( "QPE/Desktop", "restoreDone(QString)" );
+        e << file.name();
+#endif
+}
+
+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(OProcess::NotifyOnExit, OProcess::Stdout) )
+                                qWarning("Error starting %s or %s",
+                                         createTargzProc->args()[0].data(),
+                                         gzipProc->args()[0].data());
+                        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(OProcess::NotifyOnExit, (OProcess::Communication) ( OProcess::Stdin | OProcess::Stdout ));
+
+                QByteArray s;
+                s.resize( bytesAvailable() );
+                readBlock( s.data(), bytesAvailable() );
+                gzipProc->writeStdin( s.data(), s.size() );
+                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(OProcess *, char *buffer, int buflen)
+{
+        writeBlock( buffer, buflen );
+        qDebug("writeTargzBlock %d", buflen);
+        if ( !createTargzProc->isRunning() ) {
+                qDebug("tar and gzip done");
+                emit completed();
+                mode = Idle;
+                disconnect( gzipProc, SIGNAL( receivedStdout(OProcess *, char *, int ) ),
+                            this, SLOT( writeTargzBlock(OProcess *, char *, int) ) );
+        }
+}
+
+void ServerDTP::targzDone()
+{
+        //qDebug("targz done");
+        disconnect( createTargzProc, SIGNAL( receivedStdout(OProcess *, char *, int) ),
+                    this, SLOT( gzipTarBlock(OProcess *, char *, int) ) );
+        gzipProc->closeStdin();
+}
+
+void ServerDTP::gzipTarBlock(OProcess *, char *buffer, int buflen)
+{
+        //qDebug("gzipTarBlock");
+        if ( !gzipProc->isRunning() ) {
+                //qDebug("auto start gzip proc");
+                gzipProc->start(OProcess::NotifyOnExit, (OProcess::Communication) ( OProcess::Stdin | OProcess::Stdout ));
+        }
+        gzipProc->writeStdin( buffer, buflen );
+}
+
+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->clearArguments( );
+        *createTargzProc << args;
+        connect( createTargzProc,
+                 SIGNAL( receivedStdout(OProcess *, char *, int) ), SLOT( gzipTarBlock(OProcess *, char *, int) ) );
+
+        gzipProc->clearArguments( );
+        *gzipProc << "gzip";
+        connect( gzipProc, SIGNAL( receivedStdout(OProcess *, char *, int) ),
+                 SLOT( writeTargzBlock(OProcess *, char *, int) ) );
+}
+
+void ServerDTP::gunzipDone()
+{
+        qDebug("gunzipDone");
+        disconnect( gzipProc, SIGNAL( processExited() ),
+                    this, SLOT( gunzipDone() ) );
+        retrieveTargzProc->closeStdin();
+        disconnect( gzipProc, SIGNAL( receivedStdout(OProcess *, char *, int) ),
+                    this, SLOT( tarExtractBlock(OProcess *, char *, int) ) );
+}
+
+void ServerDTP::tarExtractBlock(OProcess *, char *buffer, int buflen)
+{
+        qDebug("tarExtractBlock");
+        if ( !retrieveTargzProc->isRunning() ) {
+                qDebug("auto start ungzip proc");
+                if ( !retrieveTargzProc->start(OProcess::NotifyOnExit, OProcess::Stdin) )
+                        qWarning(" failed to start tar -x process");
+        }
+        retrieveTargzProc->writeStdin( buffer, buflen );
+}
+
+
+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->clearArguments();
+        *gzipProc << "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();
+}
+