- be really paranoid about wireless extension versions for compile time vs. run time

- register handlers for SIGSEGV and SIGBUG to emergency-close the capture file

4 files changed, 56 insertions, 6 deletions

diff --git a/noncore/net/wellenreiter/ChangeLog b/noncore/net/wellenreiter/ChangeLog
index fdc8aa7..b59f9f9 100644
--- a/noncore/net/wellenreiter/ChangeLog
+++ b/noncore/net/wellenreiter/ChangeLog
@@ -1,83 +1,86 @@
 2004-??-??	Michael Lauer		<mickey@Vanille.de>
 
+	* Registered a signal handler. We're now trying to gracefully exit and emergency close capture files.
+          This should allow reproducing failures.
+	* Added sanity check for compile time vs. run time Wireless Extension versions.
 	* Added sanity check isPresent(interface) before starting the engine.
 	* Added a View submenu. Added actions to expand and collapse all items.
 	* Switched to a (hopefully) more reliable method reading from gpsd.
 	* Added parsing of named ProbeRequests. Display only-probed-yet SSIDs in a different network color.
 	* Rewrote the simple actions on new {Network, Client, Station}. Besides playing a sound or
 	  blinking a LED, a user customizable script can now be executed, if something has been
 	  detected. This opens up many possibilities, i.e. a qcop to qpegps or exec'ing flite (speech).
 	* Added decloaking of cloaked ESSIDs (length != 0, but essid[0] == \0).
 	* Hided the 'Parse' Tab in the configuration window. Not functional now and may come later
 	* Added parsing of control frames. Display stations sending them SSID "<unknown>" for now.
 	* Added command line option "-nocheck" to skip non-root and dhcp tests.
 	* Improved the speed of and user feedback during reading the manufacturer list.
 	* GPS coordinates are now presented in the DMS (as opposed to decimal) format.
 
 2003-12-18	Michael Lauer		<mickey@Vanille.de>
 
 	* Released as Version 1.0.2 (Development Snapshot)
 	* Added automatic uploading of capture files to "The Capture Dump" site at
 	  http://www.Vanille.de/projects/capturedump.spy
 	* Initial reading of the manufacturer database happens now in background
 	* Removed deprecated setMonitorMode() API ==> Use setMode( "monitor" ) now.
 	  The monitor mode now tries to use the standard IW_MODE_MONITOR first. If that
 	  doesn't work, it falls back to using the proprietary iwpriv commands
 
 2003-11-30	Michael Lauer		<mickey@Vanille.de>
 
 	* Released as Version 1.0.1 (Development Snapshot)
 	* Fixed ARP decoding for wired networks.
 	  Interestingly, 802.11 encapsulates these in IP packets, while wired ethernet just tags the type_of_protocol.
 	* Added reading GPS data from a gps daemon.
 	* Started preparations for utilizing Wellenreiter II in wired networks.
 	* Implemented persistant configuration interface and retriggerable auto detection.
 	* Added QCOP interface for talking to opie-networksettings.
 	* Added parsing of DHCP packets and detecting DHCP servers.
 	* Overhauled the configuration window and started with the customizable event system.
 	* Added disabling the screensaver.
 	* Added automatic opening and scrolling to the network tree if a new station appears.
 
 2003-05-10	Michael Lauer		<mickey@Vanille.de>
 
 	* Released as Version 1.0 (Stable)
 	* Added restarting the dhcp client if having killed it before.
 	* Decouple dump files from live capture to shift control over 'what' is dumped to applications.
 
 2003-05-05	Michael Lauer		<mickey@Vanille.de>
 
 	* Released as Version 1.0-RC1 (Release Candidate)
 	* Fixed rare segfaults while sniffing and operating the GUI simultaenously.
 	* Parse more data packets and detect more participating stations.
 	* Added live graph window showing the signal strength on all channels.
 	* Added parsing ARP packets and identifying IP addresses of participating stations.
 	* Added parsing with optionally enabled PRISM headers (signal strength).
 
 2003-04-12	Michael Lauer		<mickey@Vanille.de>
 	
 	* Released as Version 1.0 (Beta)
 	* GUI enhancements in the Menubar and the Toolbar.
 	* Improved keyboard handling.
 	* Added sanity checks for running Wellenreiter II as non-root or with dhcp clients in the background.
 	* Add writing and replaying of libpcap compatible capture files.
 
 2003-04-08	Michael Lauer		<mickey@Vanille.de>
 
 	* Released as Version 0.2 (Alpha)
 	* Closed memory leak in packet capturer.
 	* Fixed client stations appearing under essid as access points.
 	* Fixed false WEP reporting in some cases.
 	* Started with inspecting data packages.
 	* Add detecting associated client stations in infrastructural networks (if they transmit data).
 	* Worked around buggy hostap drivers writing past fixed-length-structures on arm.
 	* Added dynamic checking of available private ioctls.
 	* Added a saveable hex window for packet dissection.
 
 2003-03-30	Michael Lauer 		<mickey@Vanille.de>
 
 	* Released as Version 0.1 (Alpha)
 
 2003-03-25	Michael Lauer		<mickey@Vanille.de>
 
 	* Rewrote Wellenreiter II from scratch - including the sniffing engine.
 	* Beacon inspection works and finds ad-hoc networks and managed networks.
diff --git a/noncore/net/wellenreiter/TODO b/noncore/net/wellenreiter/TODO
index 0640d23..f0a193d 100644
--- a/noncore/net/wellenreiter/TODO
+++ b/noncore/net/wellenreiter/TODO
@@ -1,77 +1,75 @@
 /************************************************************************
 /*                W e l l e n r e i t e r   I I
 /*               ===============================
 /*
 /*                    Version: 1.0.2
 /************************************************************************
 
 ----------------------------------------------------
     Ideas as of Wellenreiter II / April 2004
 ----------------------------------------------------
 
 --------
  BUILD 
 --------
 
 - fix building against X11 again
 
 --------
  ENGINE
 --------
 
 - enable multiple packet sources
   - infrared
   - bluetooth
-  - usb?
+  - usb
 
 - define packet structure in a metalanguage and generate
   the actual parsing code (hmmm)
 
 - pester the ethereal folks to settle for an application independant
   packet dissection framework... (unlikely)
 
 - adaptive hopping scheme !
 
 - gather interface capabilities
 
 - enable sniffing in wired networks
 
-- fix autodetection (interface name)
+- fix autodetection (the interface name is not selected correctly)
 
 - use ethtool IOCTLs (if present)
 
 ---------
    UI
 ---------
 
 - display interface capabilities (or rewrite networksettings?)
 
 - distinguish wireless bridges (WDS traffic)
 
 - add configuration for scrollback buffer in hex window and log window
 
 - revamp hex window, make it more sophisticated than just a QMultiLineEdit
   - tree view
 
 - beep over headphone / customizable
 
 - count/display number of wireless networks / APs since last start/stop
 
 ---------
  FILES
 ---------
 
 - write kismet-like .network format and format to be importable into AutoRoute
 
 - implement beacon stripping (the first beacon is enough to detect a
   new network - further beacons just blow up the capture file)
 
 - write wi-scan format like that:
 	# $Creator: Wellenreiter II Version 1.0.2
 	# $Format: wi-scan
 	# Latitude      Longitude       ( SSID )        Type    ( BSSID )       Time (GMT)      [ SNR Sig Noise ]
 	# $DateGMT: 2004-02-07
 	N 41.1008009    W 8.3893034     ( Porceven )    BBS     ( 00:a0:f8:41:91:63 )   22:32:39 (GMT)  [ 21 177 156 ]
 
-- add SIGSEGV handler for emergency closing the capture file etc.
-
diff --git a/noncore/net/wellenreiter/gui/wellenreiter.cpp b/noncore/net/wellenreiter/gui/wellenreiter.cpp
index 40cd105..12b3978 100644
--- a/noncore/net/wellenreiter/gui/wellenreiter.cpp
+++ b/noncore/net/wellenreiter/gui/wellenreiter.cpp
@@ -1,297 +1,331 @@
 /**********************************************************************
 ** Copyright (C) 2002-2004 Michael 'Mickey' Lauer.  All rights reserved.
 **
 ** 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.
 **
 ***********************************************************************/
 
 #include "gps.h"
 #include "wellenreiter.h"
 #include "scanlist.h"
 #include "logwindow.h"
 #include "packetview.h"
 #include "configwindow.h"
 #include "statwindow.h"
 #include "graphwindow.h"
 #include "protolistview.h"
 
 /* OPIE */
 #ifdef QWS
 #include <opie2/oapplication.h>
 #include <opie2/odebug.h>
 #include <opie2/odevice.h>
 #else
 #include <qapplication.h>
 #endif
 #include <opie2/omanufacturerdb.h>
 #include <opie2/onetwork.h>
 #include <opie2/opcap.h>
 #include <qpe/qcopenvelope_qws.h>
 using namespace Opie::Core;
 using namespace Opie::Net;
 using namespace Opie::Ui;
 
 /* QT */
 #include <qcheckbox.h>
 #include <qcombobox.h>
 #include <qdatetime.h>
 #include <qpushbutton.h>
 #include <qlineedit.h>
 #include <qmessagebox.h>
 #include <qobjectlist.h>
 #include <qregexp.h>
 #include <qspinbox.h>
 #include <qtimer.h>
 #include <qtoolbutton.h>
 #include <qmainwindow.h>
 
 /* STD */
 #include <assert.h>
 #include <errno.h>
 #include <unistd.h>
 #include <string.h>
 #include <sys/types.h>
 #include <stdlib.h>
+#include <signal.h>
+
+Wellenreiter* Wellenreiter::instance = 0;
 
 Wellenreiter::Wellenreiter( QWidget* parent )
     : WellenreiterBase( parent, 0, 0 ),
       sniffing( false ), iface( 0 ), configwindow( 0 )
 {
 
     logwindow->log( "(i) Wellenreiter has been started." );
 
     //
     // detect operating system
     //
 
     #ifdef QWS
     QString sys;
     sys.sprintf( "(i) Running on '%s'.", (const char*) ODevice::inst()->systemString() );
     _system = ODevice::inst()->system();
     logwindow->log( sys );
     #endif
 
     netview->setColumnWidthMode( 1, QListView::Manual );
     connect( netview, SIGNAL( joinNetwork(const QString&,const QString&,int,const QString&) ),
              this, SLOT( joinNetwork(const QString&,const QString&,int,const QString&) ) );
     pcap = new OPacketCapturer();
     pcap->setAutoDelete( false );
 
     gps = new GPS( this );
 
     QTimer::singleShot( 1000, this, SLOT( initialTimer() ) );
 
+    registerSignalHandler();
 }
 
 
 Wellenreiter::~Wellenreiter()
 {
     delete pcap;
+    //unregisterSignalHandler();
 }
 
 
 void Wellenreiter::initialTimer()
 {
-    odebug << "Wellenreiter::preloading manufacturer database..." << oendl;
+    odebug << "preloading manufacturer database..." << oendl;
     OManufacturerDB::instance();
 }
 
 
+void Wellenreiter::signalHandler( int sig )
+{
+    oerr << "Aye! Received SIGSEGV or SIGBUS! Trying to exit gracefully..." << oendl;
+    if ( Wellenreiter::instance->sniffing )
+    {
+        Wellenreiter::instance->pcap->close();
+        Wellenreiter::instance->stopClicked();
+    }
+    oerr << "Phew. Seemed to work." << oendl;
+    ::exit( -1 );
+}
+
+
+void Wellenreiter::registerSignalHandler()
+{
+    Wellenreiter::instance = this;
+    struct sigaction action;
+
+    action.sa_handler = Wellenreiter::signalHandler;
+    if (sigemptyset(&action.sa_mask))
+        oerr << "sigemptyset() failure:" << strerror( errno ) << oendl;
+    if (sigaction(SIGSEGV, &action, NULL))
+        oerr << "can't set up a signal handler for SIGSEGV:" << strerror( errno ) << oendl;
+    if (sigaction(SIGBUS, &action, NULL))
+        oerr << "can't set up a signal handler for SIGBUS:" << strerror( errno ) << oendl;
+    odebug << "signal handlers setup." << oendl;
+}
+
+
 void Wellenreiter::setConfigWindow( WellenreiterConfigWindow* cw )
 {
     configwindow = cw;
 }
 
 
 void Wellenreiter::channelHopped(int c)
 {
     QString title = "Wellenreiter II -scan- [";
     QString left;
     if ( c > 1 ) left.fill( '.', c-1 );
     title.append( left );
     title.append( '|' );
     if ( c < iface->channels() )
     {
         QString right;
         right.fill( '.', iface->channels()-c );
         title.append( right );
     }
     title.append( "]" );
     //title.append( QString().sprintf( " %02d", c ) );
     assert( parent() );
     ( (QMainWindow*) parent() )->setCaption( title );
 }
 
 
 void Wellenreiter::handleNotification( OPacket* p )
 {
     QObjectList* l = p->queryList();
     QObjectListIt it( *l );
     QObject* o;
 
     while ( (o = it.current()) != 0 )
     {
         QString name = it.current()->name();
         if ( configwindow->parsePackets->isProtocolChecked( name ) )
         {
             QString action = configwindow->parsePackets->protocolAction( name );
             odebug << "parsePacket-action for '" << (const char*) name << "' seems to be '" << action << "'" << oendl;
             doAction( action, name, p );
         }
         else
         {
             odebug << "protocol '" << name << "' not checked in parsePackets." << oendl;
         }
     ++it;
     }
 }
 
 
 void Wellenreiter::handleManagementFrame( OPacket* p, OWaveLanManagementPacket* manage )
 {
     if ( manage->managementType() == "Beacon" ) handleManagementFrameBeacon( p, manage );
     else if ( manage->managementType() == "ProbeRequest" ) handleManagementFrameProbeRequest( p, manage );
     else if ( manage->managementType() == "ProbeResponse" ) handleManagementFrameProbeResponse( p, manage );
     else owarn << "Wellenreiter::handleManagementFrame(): '" << manage->managementType() << "' - please handle me!" << oendl;
 }
 
 
 void Wellenreiter::handleManagementFrameProbeRequest( OPacket* p, OWaveLanManagementPacket* request )
 {
     OWaveLanManagementSSID* ssid = static_cast<OWaveLanManagementSSID*>( p->child( "802.11 SSID" ) );
     QString essid = ssid ? ssid->ID( true /* decloak */ ) : QString("<unknown>");
     OWaveLanManagementDS* ds = static_cast<OWaveLanManagementDS*>( p->child( "802.11 DS" ) );
     int channel = ds ? ds->channel() : -1;
     OWaveLanPacket* header = static_cast<OWaveLanPacket*>( p->child( "802.11" ) );
 
     GpsLocation loc( -111, -111 );
     if ( configwindow->enableGPS->isChecked() )
     {
         // TODO: add check if GPS is working!?
         odebug << "Wellenreiter::gathering GPS data..." << oendl;
         loc = gps->position();
         odebug << "Wellenreiter::GPS data received is ( " << loc.latitude() << " , " << loc.longitude() << " ) - dms string = '" << loc.dmsPosition().latin1() << "'" << oendl;
     }
 
     if ( essid.length() )
         netView()->addNewItem( "adhoc", essid, header->macAddress2(), false /* should check FrameControl field */, -1, 0, loc, true /* only probed */ );
     odebug << "Wellenreiter::invalid frame [possibly noise] detected!" << oendl;
 }
 
 
 void Wellenreiter::handleManagementFrameProbeResponse( OPacket* p, OWaveLanManagementPacket* response )
 {
 }
 
 
 void Wellenreiter::handleManagementFrameBeacon( OPacket* p, OWaveLanManagementPacket* beacon )
 {
     QString type;
     if ( beacon->canIBSS() )
     {
         type = "adhoc";
     }
     else if ( beacon->canESS() )
     {
         type = "managed";
     }
     else
     {
         owarn << "Wellenreiter::invalid frame [possibly noise] detected!" << oendl;
         return;
     }
 
     OWaveLanManagementSSID* ssid = static_cast<OWaveLanManagementSSID*>( p->child( "802.11 SSID" ) );
     QString essid = ssid ? ssid->ID( true /* decloak */ ) : QString("<unknown>");
     OWaveLanManagementDS* ds = static_cast<OWaveLanManagementDS*>( p->child( "802.11 DS" ) );
     int channel = ds ? ds->channel() : -1;
 
     OWaveLanPacket* header = static_cast<OWaveLanPacket*>( p->child( "802.11" ) );
 
     GpsLocation loc( -111, -111 );
     if ( configwindow->enableGPS->isChecked() )
     {
         // TODO: add check if GPS is working!?
         odebug << "Wellenreiter::gathering GPS data..." << oendl;
         loc = gps->position();
         odebug << "Wellenreiter::GPS data received is ( " << loc.latitude() << " , " << loc.longitude() << " ) - dms string = '" << loc.dmsPosition().latin1() << "'" << oendl;
     }
 
     netView()->addNewItem( type, essid, header->macAddress2(), beacon->canPrivacy(), channel, 0, loc );
 
     // update graph window
     if ( ds )
     {
         OPrismHeaderPacket* prism = static_cast<OPrismHeaderPacket*>( p->child( "Prism" ) );
         if ( prism )
             graphwindow->traffic( ds->channel(), prism->signalStrength() );
         else
             graphwindow->traffic( ds->channel(), 95 );
     }
 }
 
 
 void Wellenreiter::handleControlFrame( OPacket* p, OWaveLanControlPacket* control )
 {
     OWaveLanPacket* header = static_cast<OWaveLanPacket*>( p->child( "802.11" ) );
 
     if ( control->controlType() == "Acknowledge" )
     {
         netView()->addNewItem( "adhoc", "<unknown>", header->macAddress1(), false, -1, 0, GpsLocation( -111, -111 ) );
     }
     else
     {
         odebug << "Wellenreiter::handleControlFrame - please handle " << control->controlType() << " in a future version! :D" << oendl;
     }
 }
 
 
 void Wellenreiter::handleWlanData( OPacket* p, OWaveLanDataPacket* data, OMacAddress& from, OMacAddress& to )
 {
     OWaveLanPacket* wlan = (OWaveLanPacket*) p->child( "802.11" );
     if ( wlan->fromDS() && !wlan->toDS() )
     {
         netView()->fromDStraffic( wlan->macAddress3(), wlan->macAddress1(), wlan->macAddress2() );
         from = wlan->macAddress3();
         to = wlan->macAddress2();
     }
     else if ( !wlan->fromDS() && wlan->toDS() )
     {
         netView()->toDStraffic( wlan->macAddress2(), wlan->macAddress3(), wlan->macAddress1() );
         from = wlan->macAddress2();
         to = wlan->macAddress3();
     }
     else if ( wlan->fromDS() && wlan->toDS() )
     {
         netView()->WDStraffic( wlan->macAddress4(), wlan->macAddress3(), wlan->macAddress1(), wlan->macAddress2() );
         from = wlan->macAddress4();
         to = wlan->macAddress3();
     }
     else
     {
         netView()->IBSStraffic( wlan->macAddress2(), wlan->macAddress1(), wlan->macAddress3() );
         from = wlan->macAddress2();
         to = wlan->macAddress1();
     }
 }
 
 
 void Wellenreiter::handleEthernetData( OPacket* p, OEthernetPacket* data, OMacAddress& from, OMacAddress& to )
 {
     from = data->sourceAddress();
     to = data->destinationAddress();
 
     netView()->addNewItem( "station", "<wired>", from, false, -1, 0, GpsLocation( -111, -111 ) );
 }
 
 
 void Wellenreiter::handleARPData( OPacket* p, OARPPacket*, OMacAddress& source, OMacAddress& dest )
 {
     OARPPacket* arp = (OARPPacket*) p->child( "ARP" );
     if ( arp )
@@ -313,413 +347,423 @@ void Wellenreiter::handleARPData( OPacket* p, OARPPacket*, OMacAddress& source,
 void Wellenreiter::handleIPData( OPacket* p, OIPPacket* ip, OMacAddress& source, OMacAddress& dest )
 {
     //TODO: Implement more IP based protocols
 
     ODHCPPacket* dhcp = (ODHCPPacket*) p->child( "DHCP" );
     if ( dhcp )
     {
         odebug << "Received DHCP '" << dhcp->type() << "' packet" << oendl;
         if ( dhcp->type() == "OFFER" )
         {
             odebug << "DHCP: '" << (const char*) source.toString() << "' ('" << dhcp->serverAddress().toString() << "') seems to be a DHCP server." << oendl;
             netView()->identify( source, dhcp->serverAddress().toString() );
             netView()->addService( "DHCP", source, dhcp->serverAddress().toString() );
         }
         else if ( dhcp->type() == "ACK" )
         {
             odebug << "DHCP: '" << (const char*) dhcp->clientMacAddress().toString() << "' ('" << dhcp->yourAddress().toString() << "') accepted the offered DHCP address." << oendl;
             netView()->identify( dhcp->clientMacAddress(), dhcp->yourAddress().toString() );
         }
     }
 }
 
 
 QObject* Wellenreiter::childIfToParse( OPacket* p, const QString& protocol )
 {
     if ( configwindow->parsePackets->isProtocolChecked( protocol ) )
         if ( configwindow->parsePackets->protocolAction( protocol ) == "Discard!" )
             return 0;
 
     return p->child( protocol );
 }
 
 
 bool Wellenreiter::checkDumpPacket( OPacket* p )
 {
     // go through all child packets and see if one is inside the child hierarchy for p
     // if so, do what the user requested (protocolAction), e.g. pass or discard
     if ( !configwindow->writeCaptureFile->isChecked() )
         return true; // semantic change - we're logging anyway now to /tmp/wellenreiter
 
     QObjectList* l = p->queryList();
     QObjectListIt it( *l );
     QObject* o;
 
     while ( (o = it.current()) != 0 )
     {
         QString name = it.current()->name();
         if ( configwindow->capturePackets->isProtocolChecked( name ) )
         {
             QString action = configwindow->capturePackets->protocolAction( name );
             odebug << "capturePackets-action for '" << (const char*) name << "' seems to be '" << action << "'" << oendl;
             if ( action == "Discard" )
             {
                 logwindow->log( QString().sprintf( "(i) dump-discarding of '%s' packet requested.", (const char*) name ) );
                 return false;
             }
         }
         else
         {
             odebug << "protocol '" << name << "' not checked in capturePackets." << oendl;
         }
     ++it;
     }
     return true;
 }
 
 
 void Wellenreiter::receivePacket( OPacket* p )
 {
     hexWindow()->add( p );
 
     if ( checkDumpPacket( p ) )
     {
         pcap->dump( p );
     }
 
     // check for a management frame
     OWaveLanManagementPacket* manage = static_cast<OWaveLanManagementPacket*>( childIfToParse( p, "802.11 Management" ) );
     if ( manage )
     {
         handleManagementFrame( p, manage );
         return;
     }
 
     // check for a control frame
     OWaveLanControlPacket* control = static_cast<OWaveLanControlPacket*>( childIfToParse( p, "802.11 Control" ) );
     if ( control )
     {
         handleControlFrame( p, control );
         return;
     }
 
     OMacAddress source;
     OMacAddress dest;
 
     //TODO: WEP check here
 
     // check for a wireless data frame
     OWaveLanDataPacket* wlan = static_cast<OWaveLanDataPacket*>( childIfToParse( p, "802.11 Data" ) );
     if ( wlan )
     {
         handleWlanData( p, wlan, source, dest );
     }
 
     // check for a wired data frame
     OEthernetPacket* eth = static_cast<OEthernetPacket*>( childIfToParse( p, "Ethernet" ) );
     if ( eth )
     {
         handleEthernetData( p, eth, source, dest );
     }
 
     // check for an arp frame since arp frames come in two flavours:
     // 802.11 encapsulates ARP data within IP packets while wired ethernet doesn't.
     OARPPacket* arp = static_cast<OARPPacket*>( childIfToParse( p, "ARP" ) );
     if ( arp )
     {
         handleARPData( p, arp, source, dest );
     }
 
     // check for a ip frame
     OIPPacket* ip = static_cast<OIPPacket*>( childIfToParse( p, "IP" ) );
     if ( ip )
     {
         handleIPData( p, ip, source, dest );
     }
 
     //handleNotification( p );
 
 }
 
 
 void Wellenreiter::stopClicked()
 {
     if ( iface )
     {
         disconnect( SIGNAL( receivedPacket(Opie::Net::OPacket*) ), this, SLOT( receivePacket(Opie::Net::OPacket*) ) );
         disconnect( SIGNAL( hopped(int) ), this, SLOT( channelHopped(int) ) );
         iface->setChannelHopping(); // stop hopping channels
     }
     else
         killTimers();
 
     pcap->close();
     sniffing = false;
 
     if ( iface )
     {
         // switch off monitor mode
         iface->setMode( "managed" );
         // switch off promisc flag
         iface->setPromiscuousMode( false );
 
         system( "cardctl reset; sleep 1" ); //FIXME: Use OProcess
     }
 
     logwindow->log( "(i) Stopped Scanning." );
     assert( parent() );
     ( (QMainWindow*) parent() )->setCaption( "Wellenreiter II" );
 
     // message the user
     QMessageBox::information( this, "Wellenreiter II",
                               tr( "Your wireless card\nshould now be usable again." ) );
 
     sniffing = false;
     emit( stoppedSniffing() );
 
     #ifdef QWS
     if ( WellenreiterConfigWindow::instance()->disablePM->isChecked() )
     {
         QCopEnvelope( "QPE/System", "setScreenSaverMode(int)" ) << QPEApplication::Enable;
     }
     #else
         #warning FIXME: setScreenSaverMode is not operational on the X11 build
     #endif
 
     // print out statistics
     for( QMap<QString,int>::ConstIterator it = pcap->statistics().begin(); it != pcap->statistics().end(); ++it )
        statwindow->updateCounter( it.key(), it.data() );
 }
 
 
 void Wellenreiter::startClicked()
 {
     // get configuration from config window
 
     const QString& interface = configwindow->interfaceName->currentText();
     const int cardtype = configwindow->driverType();
     const int interval = configwindow->hoppingInterval();
 
     if ( ( interface == "" ) || ( cardtype == 0 ) )
     {
         QMessageBox::information( this, "Wellenreiter II",
-                                  tr( "Your device is not\nproperly configured. Please reconfigure!" ) );
+                                  tr( "No device configured.\nPlease reconfigure!" ) );
         return;
     }
 
     // configure device
     ONetwork* net = ONetwork::instance();
 
     // TODO: check if interface is wireless and support sniffing for non-wireless interfaces
 
     if ( cardtype != DEVTYPE_FILE )
     {
 
         if ( !net->isPresent( interface ) )
         {
             QMessageBox::information( this, "Wellenreiter II",
                                     tr( "The configured device (%1)\nis not available on this system\n. Please reconfigure!" ).arg( interface ) );
             return;
         }
 
         iface = static_cast<OWirelessNetworkInterface*>(net->interface( interface )); // fails if network is not wireless!
         assert( iface );
 
         // bring device UP
         iface->setUp( true );
         if ( !iface->isUp() )
         {
             QMessageBox::warning( this, "Wellenreiter II",
                                 tr( "Can't bring interface '%1' up:\n" ).arg( iface->name() ) + strerror( errno ) );
             return;
         }
+
+        // check if wireless extension version matches
+        if ( ONetwork::wirelessExtensionCompileVersion() != iface->wirelessExtensionDriverVersion() )
+        {
+            QMessageBox::critical( this, "Wellenreiter II", tr( "<p>The Wireless Extension Versions<br>are not matching!<p>"
+                                    "  Wellenreiter II : WE V%1<br>Interface driver: WE V%2" )
+                                    .arg( QString::number( ONetwork::wirelessExtensionCompileVersion() ) )
+                                    .arg( QString::number( iface->wirelessExtensionDriverVersion() ) ) );
+            return;
+        }
     }
     // set monitor mode
     bool usePrism = configwindow->usePrismHeader();
 
     switch ( cardtype )
     {
         case DEVTYPE_CISCO: iface->setMonitoring( new OCiscoMonitoringInterface( iface, usePrism ) ); break;
         case DEVTYPE_WLAN_NG: iface->setMonitoring( new OWlanNGMonitoringInterface( iface, usePrism ) ); break;
         case DEVTYPE_HOSTAP: iface->setMonitoring( new OHostAPMonitoringInterface( iface, usePrism ) ); break;
         case DEVTYPE_ORINOCO: iface->setMonitoring( new OOrinocoMonitoringInterface( iface, usePrism ) ); break;
         case DEVTYPE_MANUAL: QMessageBox::information( this, "Wellenreiter II", tr( "Bring your device into\nmonitor mode now." ) ); break;
         case DEVTYPE_FILE: odebug << "Wellenreiter: Capturing from file '" << interface << "'" << oendl;  break;
         default: assert( 0 ); // shouldn't reach this
     }
 
     // switch device into monitor mode
     if ( cardtype < DEVTYPE_FILE )
     {
         if ( cardtype != DEVTYPE_MANUAL )
             iface->setMode( "monitor" );
         if ( iface->mode() != "monitor" )
         {
             if ( QMessageBox::warning( this, "Wellenreiter II",
                                   tr( "Can't set interface '%1'\ninto monitor mode:\n" ).arg( iface->name() ) + strerror( errno ) +
                                   tr( "\nContinue with limited functionality?" ), QMessageBox::Yes, QMessageBox::No ) == QMessageBox::No )
                 return;
         }
     }
 
     // open GPS device
     if ( configwindow->enableGPS->isChecked() )
     {
         odebug << "Wellenreiter:GPS enabled @ " << configwindow->gpsdHost->currentText() << ":" << configwindow->gpsdPort->value() << "" << oendl;
         gps->open( configwindow->gpsdHost->currentText(), configwindow->gpsdPort->value() );
     }
 
     // open pcap and start sniffing
 
     if ( configwindow->writeCaptureFile->isChecked() ) // write to a user specified capture file?
     {
         dumpname = configwindow->captureFileName->text();
         if ( dumpname.isEmpty() ) dumpname = "captureFile";
         dumpname.append( '-' );
         dumpname.append( QTime::currentTime().toString().replace( QRegExp( ":" ), "-" ) );
         dumpname.append( ".wellenreiter" );
     }
     else // write it anyway ;)
     {
         dumpname = "/var/log/dump.wellenreiter";
     }
 
     if ( cardtype != DEVTYPE_FILE )
         pcap->open( interface );
     else
         pcap->openCaptureFile( interface );
 
     odebug << "Wellenreiter:: dumping to " << dumpname << "" << oendl;
     pcap->openDumpFile( dumpname );
 
     if ( !pcap->isOpen() )
     {
         QMessageBox::warning( this, "Wellenreiter II", tr( "Can't open packet capturer for\n'%1':\n" ).arg(
                               cardtype == DEVTYPE_FILE ? (const char*) interface : iface->name() ) + QString(strerror( errno ) ));
         return;
     }
 
     // set capturer to non-blocking mode
     pcap->setBlocking( false );
 
     // start channel hopper
     if ( cardtype != DEVTYPE_FILE )
     {
         logwindow->log( QString().sprintf( "(i) Starting channel hopper (d=%d ms)", configwindow->hopInterval->value() ) );
         iface->setChannelHopping( configwindow->hopInterval->value() ); //use interval from config window
     }
 
     if ( cardtype != DEVTYPE_FILE )
     {
         // connect socket notifier and start channel hopper
         connect( pcap, SIGNAL( receivedPacket(Opie::Net::OPacket*) ), this, SLOT( receivePacket(Opie::Net::OPacket*) ) );
         connect( iface->channelHopper(), SIGNAL( hopped(int) ), this, SLOT( channelHopped(int) ) );
     }
     else
     {
         // start timer for reading packets
         startTimer( 100 );
     }
 
     logwindow->log( "(i) Started Scanning." );
     sniffing = true;
 
     #ifdef QWS
     if ( WellenreiterConfigWindow::instance()->disablePM->isChecked() )
     {
         QCopEnvelope( "QPE/System", "setScreenSaverMode(int)" ) << QPEApplication::Disable;
     }
     #else
         #warning FIXME: setScreenSaverMode is not operational on the X11 build
     #endif
 
     emit( startedSniffing() );
     if ( cardtype != DEVTYPE_FILE ) channelHopped( 6 ); // set title
     else
     {
         assert( parent() );
         ( (QMainWindow*) parent() )->setCaption( tr( "Wellenreiter II - replaying capture file..." ) );
     }
 }
 
 
 void Wellenreiter::timerEvent( QTimerEvent* )
 {
     odebug << "Wellenreiter::timerEvent()" << oendl;
     OPacket* p = pcap->next();
     if ( !p ) // no more packets available
     {
         stopClicked();
     }
     else
     {
         receivePacket( p );
         // We no longer delete packets here. Ownership of the packets is
         // transferred to the PacketView.
         //delete p;
     }
 }
 
 
 void Wellenreiter::doAction( const QString& action, const QString& protocol, OPacket* p )
 {
     #ifdef QWS
     if ( action == "TouchSound" )
         ODevice::inst()->playTouchSound();
     else if ( action == "AlarmSound" )
         ODevice::inst()->playAlarmSound();
     else if ( action == "KeySound" )
         ODevice::inst()->playKeySound();
     else if ( action == "LedOn" )
         ODevice::inst()->setLedState( Led_Mail, Led_On );
     else if ( action == "LedOff" )
         ODevice::inst()->setLedState( Led_Mail, Led_Off );
     else if ( action == "LogMessage" )
         logwindow->log( QString().sprintf( "Got packet with protocol '%s'", (const char*) protocol ) );
     else if ( action == "MessageBox" )
         QMessageBox::information( this, "Notification!",
         QString().sprintf( "Got packet with protocol '%s'", (const char*) protocol ) );
     #else
     #warning Actions do not work with Qt/X11 yet
     #endif
 }
 
 void Wellenreiter::joinNetwork(const QString& type, const QString& essid, int channel, const QString& macaddr)
 {
     #ifdef QWS
     if ( !iface )
     {
         QMessageBox::warning( this, tr( "Can't do that!" ), tr( "No wireless\ninterface available." ) );
         return;
     }
 
     if ( sniffing )
     {
         QMessageBox::warning( this, tr( "Can't do that!" ), tr( "Stop sniffing before\njoining a net." ) );
         return;
     }
 
     qDebug( "joinNetwork() with Interface %s: %s, %s, %d, %s",
         (const char*) iface->name(),
         (const char*) type,
         (const char*) essid,
         channel,
         (const char*) macaddr );
 
     QCopEnvelope msg( "QPE/Application/networksettings", "wlan(QString,QString,QString)" );
     int count = 3;
     odebug << "sending " << count << " messages" << oendl;
     msg << QString("count") << QString::number(count);
     odebug << "msg >" << iface->name() << "< Mode >" << type.latin1() << "<" << oendl;
     msg << QString(iface->name()) << QString("Mode") << type;
     odebug << "msg >" << iface->name() << "< essid >" << essid.latin1() << "<" << oendl;
     msg << QString(iface->name()) << QString("ESSID") << essid;
     odebug << "msg >" << iface->name() << "< channel >" << channel << "<" << oendl;
     msg << QString(iface->name()) << QString("Channel") << channel;
 //    odebug << "msg >" << iface->name() << "< mac >" << macaddr << "<" << oendl;
 //    msg << QString(iface->name()) << QString("MacAddr") << macaddr;
     #else
     QMessageBox::warning( this, tr( "Can't do that!" ), tr( "Function only available on Embedded build" ) );
     #endif
 
 }
 
diff --git a/noncore/net/wellenreiter/gui/wellenreiter.h b/noncore/net/wellenreiter/gui/wellenreiter.h
index f609ef4..32e5690 100644
--- a/noncore/net/wellenreiter/gui/wellenreiter.h
+++ b/noncore/net/wellenreiter/gui/wellenreiter.h
@@ -1,107 +1,112 @@
 /**********************************************************************
 ** Copyright (C) 2002-2004 Michael 'Mickey' Lauer.  All rights reserved.
 **
 ** 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.
 **
 **********************************************************************/
 
 #ifndef WELLENREITER_H
 #define WELLENREITER_H
 
 #include "wellenreiterbase.h"
 
 #ifdef QWS
 #include <opie2/odevice.h>
 #endif
 
+#include <signal.h>
+
 class QTimerEvent;
 class QPixmap;
 namespace Opie {namespace Net {class OPacket;}}
 namespace Opie {namespace Net {class OWaveLanManagementPacket;}}
 namespace Opie {namespace Net {class OWaveLanControlPacket;}}
 namespace Opie {namespace Net {class OWaveLanDataPacket;}}
 namespace Opie {namespace Net {class OEthernetPacket;}}
 namespace Opie {namespace Net {class OARPPacket;}}
 namespace Opie {namespace Net {class OMacAddress;}}
 namespace Opie {namespace Net {class OIPPacket;}}
 namespace Opie {namespace Net {class OPacket;}}
 namespace Opie {namespace Net {class OWirelessNetworkInterface;}}
 namespace Opie {namespace Net {class OPacketCapturer;}}
 class PacketView;
 class WellenreiterConfigWindow;
 class MLogWindow;
 class GPS;
 
 class Wellenreiter : public WellenreiterBase {
     Q_OBJECT
 
   public:
     Wellenreiter( QWidget* parent = 0 );
     ~Wellenreiter();
 
     void setConfigWindow( WellenreiterConfigWindow* cw );
     MScanListView* netView() const { return netview; };
     MLogWindow* logWindow() const { return logwindow; };
     PacketView* hexWindow() const { return hexwindow; };
     bool isDaemonRunning() const { return sniffing; };
     QString captureFileName() const { return dumpname; };
 
   public:
     bool sniffing;
+    static Wellenreiter* instance;
+    static void signalHandler( int sig );
 
   protected:
     virtual void timerEvent( QTimerEvent* );
 
   public slots:
     void initialTimer();
 
     void channelHopped(int);
     void receivePacket(Opie::Net::OPacket*);
     void startClicked();
     void stopClicked();
 
     void joinNetwork(const QString&,const QString&,int,const QString&);
 
   signals:
     void startedSniffing();
     void stoppedSniffing();
 
   private:
     void handleManagementFrame( Opie::Net::OPacket* p, Opie::Net::OWaveLanManagementPacket* );
     void handleManagementFrameBeacon( Opie::Net::OPacket* p, Opie::Net::OWaveLanManagementPacket* );
     void handleManagementFrameProbeRequest( Opie::Net::OPacket* p, Opie::Net::OWaveLanManagementPacket* );
     void handleManagementFrameProbeResponse( Opie::Net::OPacket* p, Opie::Net::OWaveLanManagementPacket* );
     void handleControlFrame( Opie::Net::OPacket* p, Opie::Net::OWaveLanControlPacket* control );
     void handleWlanData( Opie::Net::OPacket* p, Opie::Net::OWaveLanDataPacket* data, Opie::Net::OMacAddress& from, Opie::Net::OMacAddress& to );
     void handleEthernetData( Opie::Net::OPacket* p, Opie::Net::OEthernetPacket* data, Opie::Net::OMacAddress& from, Opie::Net::OMacAddress& to );
     void handleARPData( Opie::Net::OPacket* p, Opie::Net::OARPPacket* arp, Opie::Net::OMacAddress& from, Opie::Net::OMacAddress& to );
     void handleIPData( Opie::Net::OPacket* p, Opie::Net::OIPPacket* ip, Opie::Net::OMacAddress& from, Opie::Net::OMacAddress& to );
     void handleNotification( Opie::Net::OPacket* p );
     void doAction( const QString& action, const QString& protocol, Opie::Net::OPacket* p );
     QObject* childIfToParse( Opie::Net::OPacket* p, const QString& protocol );
     bool checkDumpPacket( Opie::Net::OPacket* p );
+    void registerSignalHandler();
 
   private:
     #ifdef QWS
     Opie::Core::OSystem _system;                // Opie Operating System identifier
     #endif
 
     QString dumpname;
     Opie::Net::OWirelessNetworkInterface* iface;
     Opie::Net::OPacketCapturer* pcap;
     WellenreiterConfigWindow* configwindow;
     GPS* gps;
 
     //void readConfig();
     //void writeConfig();
 };
 
 
 
 #endif