Security fix by trolltech

6 files changed, 227 insertions, 116 deletions

diff --git a/core/launcher/desktop.cpp b/core/launcher/desktop.cpp
index 24dce73..541b4be 100644
--- a/core/launcher/desktop.cpp
+++ b/core/launcher/desktop.cpp
@@ -557,26 +557,26 @@ void Desktop::execAutoStart() {
     QString appName;
     int delay;
     QDateTime now = QDateTime::currentDateTime();
     Config cfg( "autostart" );
     cfg.setGroup( "AutoStart" );
     appName = cfg.readEntry("Apps", "");
     delay = (cfg.readEntry("Delay", "0" )).toInt();
     // If the time between suspend and resume was longer then the
     // value saved as delay, start the app
     if ( suspendTime.secsTo(now) >= (delay*60) ) {
         QCopEnvelope e("QPE/System", "execute(QString)");
         e << QString(appName);
-    } else {
-    }
+    } //else {
+    //}
 }
 
 #if defined(QPE_HAVE_TOGGLELIGHT)
 #include <qpe/config.h>
 
 #include <sys/ioctl.h>
 #include <sys/types.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <errno.h>
 #include <linux/ioctl.h>
 #include <time.h>
diff --git a/core/launcher/launcher.pro b/core/launcher/launcher.pro
index ccf8231..169edc1 100644
--- a/core/launcher/launcher.pro
+++ b/core/launcher/launcher.pro
@@ -90,25 +90,25 @@ SOURCES		= background.cpp \
 	$(OPIEDIR)/rsync/util.c \
 	$(OPIEDIR)/rsync/version.c \
 	$(OPIEDIR)/rsync/whole.c \
 	$(OPIEDIR)/rsync/qrsync.cpp
 INTERFACES	= syncdialog.ui
 INCLUDEPATH += $(OPIEDIR)/include
 DEPENDPATH	+= $(OPIEDIR)/include .
 INCLUDEPATH += $(OPIEDIR)/core/apps/calibrate
 DEPENDPATH	+= $(OPIEDIR)/core/apps/calibrate
 INCLUDEPATH += $(OPIEDIR)/rsync
 DEPENDPATH	+= $(OPIEDIR)/rsync
 TARGET		= qpe
-LIBS		+= -lqpe -lcrypt -lopie
+LIBS		+= -lqpe -lcrypt -lopie -luuid
 
 TRANSLATIONS = ../../i18n/de/qpe.ts \
 	 ../../i18n/en/qpe.ts \
 	 ../../i18n/es/qpe.ts \
 	 ../../i18n/fr/qpe.ts \
 	 ../../i18n/hu/qpe.ts \
 	 ../../i18n/ja/qpe.ts \
 	 ../../i18n/ko/qpe.ts \
 	 ../../i18n/no/qpe.ts \
 	 ../../i18n/pl/qpe.ts \
 	 ../../i18n/pt/qpe.ts \
 	 ../../i18n/pt_BR/qpe.ts \
diff --git a/core/launcher/qcopbridge.cpp b/core/launcher/qcopbridge.cpp
index 2d084fc..85993ee 100644
--- a/core/launcher/qcopbridge.cpp
+++ b/core/launcher/qcopbridge.cpp
@@ -1,106 +1,115 @@
 /**********************************************************************
-** Copyright (C) 2000 Trolltech AS.  All rights reserved.
+** Copyright (C) 2000-2002 Trolltech AS.  All rights reserved.
 **
-** This file is part of Qtopia Environment.
+** 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.
 **
 **********************************************************************/
 
 #include "qcopbridge.h"
 #include "transferserver.h"
 
+#ifdef QWS
 #include <qpe/qcopenvelope_qws.h>
+#endif
 #include <qpe/qpeapplication.h>
+#include <qpe/version.h>
 
 #include <qdir.h>
 #include <qfile.h>
 #include <qtextstream.h>
 #include <qdatastream.h>
 #include <qstringlist.h>
 #include <qfileinfo.h>
 #include <qregexp.h>
+#ifdef QWS
 #include <qcopchannel_qws.h>
+#endif
 
-// actually this is wrong, _XOPEN_SOURCE should get defined on the commandline
-// and it should have a proper value assigned. (Simon)
-#if !defined(_XOPEN_SOURCE)
 #define _XOPEN_SOURCE
-#endif
 #include <pwd.h>
 #include <sys/types.h>
 #include <unistd.h>
 
 #if defined(_OS_LINUX_)
 #include <shadow.h>
 #endif
 
 //#define INSECURE
 
 const int block_size = 51200;
 
 QCopBridge::QCopBridge( Q_UINT16 port, QObject *parent,
         const char* name )
     : QServerSocket( port, 1, parent, name ),
       desktopChannel( 0 ),
       cardChannel( 0 )
 {
     if ( !ok() )
   qWarning( "Failed to bind to port %d", port );
     else {
+#ifndef QT_NO_COP
   desktopChannel = new QCopChannel( "QPE/Desktop", this );
   connect( desktopChannel, SIGNAL(received(const QCString &, const QByteArray &)),
      this, SLOT(desktopMessage( const QCString &, const QByteArray &)) );
   cardChannel = new QCopChannel( "QPE/Card", this );
   connect( cardChannel, SIGNAL(received(const QCString &, const QByteArray &)),
      this, SLOT(desktopMessage( const QCString &, const QByteArray &)) );
+#endif
     }
     sendSync = FALSE;
 }
 
 QCopBridge::~QCopBridge()
 {
+#ifndef QT_NO_COP
     delete desktopChannel;
+#endif
 }
 
 void QCopBridge::newConnection( int socket )
 {
     QCopBridgePI *pi = new QCopBridgePI( socket, this );
     openConnections.append( pi );
     connect ( pi, SIGNAL( connectionClosed( QCopBridgePI *) ), this, SLOT( connectionClosed( QCopBridgePI *) ) );
+#ifndef QT_NO_COP
     QCopEnvelope( "QPE/System", "setScreenSaverMode(int)" ) << QPEApplication::DisableSuspend;
+#endif
     
     if ( sendSync ) {
   pi ->startSync();
   sendSync = FALSE;
     }
 }
 
 void QCopBridge::connectionClosed( QCopBridgePI *pi )
 {
     openConnections.remove( pi );
     if ( openConnections.count() == 0 ) {
+#ifndef QT_NO_COP
   QCopEnvelope( "QPE/System", "setScreenSaverMode(int)" ) << QPEApplication::Enable;
+#endif
     }
 }    
 
 void QCopBridge::closeOpenConnections()
 {
     QCopBridgePI *pi;
     for ( pi = openConnections.first(); pi != 0; pi = openConnections.next() )
   pi->close();
 }
 
 
 void QCopBridge::desktopMessage( const QCString &command, const QByteArray &args )
@@ -133,32 +142,50 @@ void QCopBridge::desktopMessage( const QCString &command, const QByteArray &args
     QCString cstr;
     stream >> cstr;
     str = QString::fromLocal8Bit( cstr );
       } else if ( *it == "int" ) {
     int i;
     stream >> i;
     str = QString::number( i );
       } else if ( *it == "bool" ) {
     int i;
     stream >> i;
     str = QString::number( i );
       } else {
-    qDebug(" cannot route the argument type %s through the qcop bridge", (*it).latin1() );
+		qDebug(" cannot route the argument type %s throught the qcop bridge", (*it).latin1() );
     return;
       }
-      str.replace( QRegExp("&"), "&amp;" );
-      str.replace( QRegExp(" "), "&0x20;" );
-      str.replace( QRegExp("\n"), "&0x0d;" );
-      str.replace( QRegExp("\r"), "&0x0a;" );
-      data += " " + str;
+	    QString estr;
+	    for (int i=0; i<(int)str.length(); i++) {
+		QChar ch = str[i];
+		if ( ch.row() )
+		    goto quick;
+		switch (ch.cell()) {
+		    case '&':
+			estr.append( "&amp;" );
+			break;
+		    case ' ':
+			estr.append( "&0x20;" );
+			break;
+		    case '\n':
+			estr.append( "&0x0d;" );
+			break;
+		    case '\r':
+			estr.append( "&0x0a;" );
+			break;
+		    default: quick:
+			estr.append(ch);
+		}
+	    }
+	    data += " " + estr;
   }
     }
     QString sendCommand = QString(command.data()) + data;
     // send the command to all open connections
     if ( command == "startSync()" ) {
   // we need to buffer it a bit
   sendSync = TRUE;
   startTimer( 20000 );
     }  
     
     QCopBridgePI *pi;
     for ( pi = openConnections.first(); pi != 0; pi = openConnections.next() ) {
@@ -173,36 +200,41 @@ void QCopBridge::timerEvent( QTimerEvent * )
 }
 
 
 QCopBridgePI::QCopBridgePI( int socket, QObject *parent, const char* name )
     : QSocket( parent, name ) 
 {
     setSocket( socket );
 
     peerport = peerPort();
     peeraddress = peerAddress();
 
 #ifndef INSECURE
-    if ( !accessAuthorized(peeraddress) ) {
+    if ( !SyncAuthentication::isAuthorized(peeraddress) ) {
   state = Forbidden;
   startTimer( 0 );
     } else 
 #endif  
     {
   state = Connected;
   sendSync = FALSE;
   connect( this, SIGNAL( readyRead() ), SLOT( read() ) );
   connect( this, SIGNAL( connectionClosed() ), SLOT( connectionClosed() ) );
 
-  send( "220 Qtopia QCop bridge ready!" );
+	QString intro="220 Qtopia ";
+	intro += QPE_VERSION; intro += ";";
+	intro += "challenge="; intro += SyncAuthentication::serverId(); intro += ";";
+	intro += "loginname="; intro += SyncAuthentication::loginName(); intro += ";";
+	intro += "displayname="; intro += SyncAuthentication::ownerName(); intro += ";";
+	send( intro );
   state = Wait_USER;
 
   // idle timer to close connections when not used anymore
   startTimer( 60000 );
   connected = TRUE;
     }
 }
 
 
 QCopBridgePI::~QCopBridgePI()
 {
 
@@ -226,55 +258,24 @@ void QCopBridgePI::send( const QString& msg )
 {
     QTextStream os( this );
     os << msg << endl;
     //qDebug( "sending qcop message: %s", msg.latin1() );
 }
 
 void QCopBridgePI::read()
 {
     while ( canReadLine() )
   process( readLine().stripWhiteSpace() );
 }
 
-bool QCopBridgePI::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 QCopBridgePI::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;
-*/
-}
-
 void QCopBridgePI::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
@@ -287,38 +288,37 @@ void QCopBridgePI::process( const QString& message )
   send( "211 Have a nice day!" );
   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 ) ) {
+	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" || !checkPassword( arg ) ) {
-  //if ( cmd != "PASS" || msg.count() < 2 || !checkPassword( arg ) ) {
+	if ( cmd != "PASS" || !SyncAuthentication::checkPassword( arg ) ) {
       send( "530 Please login with USER and PASS" );
       return;
   }
   send( "230 User logged in, proceed" );
   state = Ready;
   if ( sendSync ) {
       sendDesktopMessage( "startSync()" );
       sendSync = FALSE;
   }
   return;
     }
 
@@ -380,37 +380,41 @@ void QCopBridgePI::process( const QString& message )
         ds << arg.local8Bit();
     else if ( *it == "int" )
         ds << arg.toInt();
     else if ( *it == "bool" )
         ds << arg.toInt();
     else {
         send( "500 Syntax error, command unrecognized" );
         return;
     }
     msgId++;
       }
 
+#ifndef QT_NO_COP
       if ( !QCopChannel::isRegistered( channel.latin1() ) ) {
     // send message back about it
     QString answer = "599 ChannelNotRegistered " + channel;
     send( answer );
     return;
       }
+#endif
       
+#ifndef QT_NO_COP
       if ( paramList.count() )
     QCopChannel::send( channel.latin1(), command.latin1(), buffer );
       else
     QCopChannel::send( channel.latin1(), command.latin1() );
 
       send( "200 Command okay" );
+#endif
   }
     }
     // not implemented
     else
   send( "502 Command not implemented" );
 }
 
 
 
 void QCopBridgePI::timerEvent( QTimerEvent * )
 {
     if ( connected )
diff --git a/core/launcher/qcopbridge.h b/core/launcher/qcopbridge.h
index 114b3ee..408d10d 100644
--- a/core/launcher/qcopbridge.h
+++ b/core/launcher/qcopbridge.h
@@ -1,16 +1,16 @@
 /**********************************************************************
-** Copyright (C) 2000 Trolltech AS.  All rights reserved.
+** Copyright (C) 2000-2002 Trolltech AS.  All rights reserved.
 **
-** This file is part of Qtopia Environment.
+** 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
@@ -70,26 +70,23 @@ public:
     void startSync() { sendSync = TRUE; }
     
 signals:
     void connectionClosed( QCopBridgePI *);
     
 protected slots:
     void read();
     void send( const QString& msg );
     void process( const QString& command );
     void connectionClosed();
 
 protected:
-    bool checkUser( const QString& user );
-    bool checkPassword( const QString& pw );
-
     void timerEvent( QTimerEvent *e );
 
 private:
     State state;
     Q_UINT16 peerport;
     QHostAddress peeraddress;
     bool connected;
     bool sendSync;
 };
 
 #endif
diff --git a/core/launcher/transferserver.cpp b/core/launcher/transferserver.cpp
index 7294f9c..a6dab07 100644
--- a/core/launcher/transferserver.cpp
+++ b/core/launcher/transferserver.cpp
@@ -1,120 +1,239 @@
 /**********************************************************************
-** Copyright (C) 2000 Trolltech AS.  All rights reserved.
+** Copyright (C) 2000-2002 Trolltech AS.  All rights reserved.
 **
-** This file is part of Qtopia Environment.
+** 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>
+
+extern "C" {
+#include <uuid/uuid.h>
+#define UUID_H_INCLUDED
+}
 
 #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>
+#ifdef QWS
 #include <qpe/qcopenvelope_qws.h>
+#endif
 
 #include "transferserver.h"
 #include "qprocess.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 );
 }
 
-bool accessAuthorized(QHostAddress peeraddress)
+QString SyncAuthentication::serverId()
+{
+    Config cfg("Security");
+    cfg.setGroup("Sync");
+    QString r=cfg.readEntry("serverid");
+    if ( r.isEmpty() ) {
+	uuid_t uuid;
+	uuid_generate( uuid );
+	cfg.writeEntry("serverid",(r = QUuid( uuid ).toString()));
+    }
+    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");
-    uint auth_peer = cfg.readNumEntry("auth_peer",0xc0a80100);
+    QString allowedstr = cfg.readEntry("auth_peer","192.168.1.0");
+    QHostAddress allowed;
+    allowed.setAddress(allowedstr);
+    uint auth_peer = allowed.ip4Addr();
     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()));
+    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 ok;
+	return FALSE;
 }
 
+    // Second, check sync password...
+    if ( password.left(6) == "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"))==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 ( !accessAuthorized(peeraddress) ) {
+    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 transfer service ready!" );
+	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;
 
@@ -142,55 +261,24 @@ 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() );
 }
@@ -245,38 +333,37 @@ void ServerPI::process( const QString& message )
 	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 ) ) {
+	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" || !checkPassword( arg ) ) {
-	//if ( cmd != "PASS" || msg.count() < 2 || !checkPassword( arg ) ) {
+	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)
@@ -445,30 +532,33 @@ void ServerPI::process( const QString& message )
 	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() )
+	    if ( file.remove() ) {
 		send( "250 Requested file action okay, completed" );
-	    else
+		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" );
 	}
@@ -625,27 +715,34 @@ 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" );
+    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();
@@ -843,25 +940,25 @@ QString ServerPI::absFilePath( const QString& file )
 	filepath = directory.path() + "/" + file;
 
     return filepath;
 }
 
 
 void ServerPI::timerEvent( QTimerEvent * )
 {
     connectionClosed();
 }
 
 
-ServerDTP::ServerDTP( QObject *parent, const char* name )
+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 );
 
@@ -882,26 +979,28 @@ retrieveTargzProc( 0 ), gzipProc( 0 )
 }
 
 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;
     }
diff --git a/core/launcher/transferserver.h b/core/launcher/transferserver.h
index 076e460..a3bb060 100644
--- a/core/launcher/transferserver.h
+++ b/core/launcher/transferserver.h
@@ -1,16 +1,16 @@
 /**********************************************************************
-** Copyright (C) 2000 Trolltech AS.  All rights reserved.
+** Copyright (C) 2000-2002 Trolltech AS.  All rights reserved.
 **
-** This file is part of Qtopia Environment.
+** 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
@@ -27,24 +27,38 @@ class QFileInfo;
 class QProcess;
 class TransferServer : public QServerSocket
 {
     Q_OBJECT
 
 public:
     TransferServer( Q_UINT16 port, QObject *parent = 0, const char* name = 0 );
     virtual ~TransferServer();
 
     void newConnection( int socket );
 };
 
+class SyncAuthentication : QObject
+{
+    Q_OBJECT
+
+public:
+    static int isAuthorized(QHostAddress peeraddress);
+    static bool checkPassword(const QString& pw);
+    static bool checkUser(const QString& user);
+
+    static QString serverId();
+    static QString loginName();
+    static QString ownerName();
+};
+
 
 class ServerDTP : public QSocket
 {
     Q_OBJECT
 
 public:
     ServerDTP( QObject *parent = 0, const char* name = 0 );
     ~ServerDTP();
 
     enum Mode{ Idle = 0, SendFile, SendGzipFile, SendBuffer,
 	       RetrieveFile, RetrieveGzipFile, RetrieveBuffer };
 
@@ -56,24 +70,25 @@ public:
     void sendByteArray( const QByteArray& array );
     void sendByteArray( const QByteArray& array, const QHostAddress& host, Q_UINT16 port );
 
     void retrieveFile( const QString fn );
     void retrieveFile( const QString fn, const QHostAddress& host, Q_UINT16 port );
     void retrieveGzipFile( const QString &fn );
     void retrieveGzipFile( const QString &fn, const QHostAddress& host, Q_UINT16 port );
     void retrieveByteArray();
     void retrieveByteArray( const QHostAddress& host, Q_UINT16 port );
 
     Mode dtpMode() { return mode; }
     QByteArray buffer() { return buf.buffer(); }
+    QString fileName() const { return file.name(); }
 
     void setSocket( int socket );
 
 signals:
     void completed();
     void failed();
 
 private slots:
     void connectionClosed();
     void connected();
     void bytesWritten( int bytes );
     void readyRead();
@@ -122,26 +137,24 @@ public:
 
 protected slots:
     void read();
     void send( const QString& msg );
     void process( const QString& command );
     void connectionClosed();
     void dtpCompleted();
     void dtpFailed();
     void dtpError( int );
     void newConnection( int socket );
 
 protected:
-    bool checkUser( const QString& user );
-    bool checkPassword( const QString& pw );
     bool checkReadFile( const QString& file );
     bool checkWriteFile( const QString& file );
     bool parsePort( const QString& pw );
     bool backupRestoreGzip( const QString &file, QStringList &targets );
     bool backupRestoreGzip( const QString &file );
 
     bool sendList( const QString& arg );
     void sendFile( const QString& file );
     void retrieveFile( const QString& file );
 
     QString permissionString( QFileInfo *info );
     QString fileListing( QFileInfo *info );
@@ -155,14 +168,12 @@ private:
     QHostAddress peeraddress;
     bool passiv;
     bool wait[4];
     ServerDTP *dtp;
     ServerSocket *serversocket;
     QString waitfile;
     QDir directory;
     QByteArray waitarray;
     QString renameFrom;
     QString lastCommand;
     int waitsocket;
 };
-
-bool accessAuthorized(QHostAddress peeraddress);