Fix possible divide by null

Patch for mickeyl...

1 files changed, 11 insertions, 10 deletions

diff --git a/libopie2/opienet/onetwork.cpp b/libopie2/opienet/onetwork.cpp
index ab3e77f..26a6c81 100644
--- a/libopie2/opienet/onetwork.cpp
+++ b/libopie2/opienet/onetwork.cpp
@@ -1,456 +1,456 @@
 /*

                              This file is part of the Opie Project

                              Copyright (C) 2003-2004 by Michael 'Mickey' Lauer

               =.             <mickey@Vanille.de>

             .=l.

            .>+-=

  _;:,     .>    :=|.         This program is free software; you can

 .> <`_,   >  .   <=          redistribute it and/or  modify it under

 :`=1 )Y*s>-.--   :           the terms of the GNU Library General Public

 .="- .-=="i,     .._         License as published by the Free Software

  - .   .-<_>     .<>         Foundation; either version 2 of the License,

      ._= =}       :          or (at your option) any later version.

     .%`+i>       _;_.

     .i_,=:_.      -<s.       This program is distributed in the hope that

      +  .  -:.       =       it will be useful,  but WITHOUT ANY WARRANTY;

     : ..    .:,     . . .    without even the implied warranty of

     =_        +     =;=|`    MERCHANTABILITY or FITNESS FOR A

   _.=:.       :    :=>`:     PARTICULAR PURPOSE. See the GNU

 ..}^=.=       =       ;      Library General Public License for more

 ++=   -.     .`     .:       details.

  :     =  ...= . :.=-

  -.   .:....=;==+<;          You should have received a copy of the GNU

   -_. . .   )=.  =           Library General Public License along with

     --        :-=`           this library; see the file COPYING.LIB.

                              If not, write to the Free Software Foundation,

                              Inc., 59 Temple Place - Suite 330,

                              Boston, MA 02111-1307, USA.

 

 */

 

 /* OPIE */

 

 #include <opie2/onetwork.h>

 #include <opie2/ostation.h>

 #include <opie2/odebug.h>

 

 /* QT */

 

 #include <qfile.h>

 #include <qtextstream.h>

 

 /* UNIX */

 

 #include <assert.h>

 #include <arpa/inet.h>

 #include <errno.h>

 #include <string.h>

 #include <stdlib.h>

 #include <math.h>

 #include <sys/ioctl.h>

 #include <sys/socket.h>

 #include <sys/types.h>

 #include <unistd.h>

 #include <linux/sockios.h>

 #include <net/if_arp.h>

 #include <stdarg.h>

 

 #ifndef NODEBUG

 #include <opie2/odebugmapper.h>

-
-
-using namespace Opie::Core;
-using namespace Opie::Net::Private;
+

+

+using namespace Opie::Core;

+using namespace Opie::Net::Private;

 DebugMapper* debugmapper = new DebugMapper();

 #endif

 

 /*======================================================================================

  * ONetwork

  *======================================================================================*/

 

-namespace Opie {
-namespace Net  {
+namespace Opie {

+namespace Net  {

 ONetwork* ONetwork::_instance = 0;

 

 ONetwork::ONetwork()

 {

     odebug << "ONetwork::ONetwork()" << oendl;

     odebug << "ONetwork: This code has been compiled against Wireless Extensions V" << WIRELESS_EXT << oendl;

     synchronize();

 }

 

 void ONetwork::synchronize()

 {

     // gather available interfaces by inspecting /proc/net/dev

     //FIXME: we could use SIOCGIFCONF here, but we aren't interested in virtual (e.g. eth0:0) devices

     //FIXME: Use SIOCGIFCONF anway, because we can disable listing of aliased devices

     //FIXME: Best is use SIOCGIFCONF and if this doesn't work (result=-1), then fallback to parsing /proc/net/dev

 

     _interfaces.clear();

     QString str;

     QFile f( "/proc/net/dev" );

     bool hasFile = f.open( IO_ReadOnly );

     if ( !hasFile )

     {

         odebug << "ONetwork: /proc/net/dev not existing. No network devices available" << oendl;

         return;

     }

     QTextStream s( &f );

     s.readLine();

     s.readLine();

     while ( !s.atEnd() )

     {

         s >> str;

         str.truncate( str.find( ':' ) );

         odebug << "ONetwork: found interface '" << str << "'" << oendl;

         ONetworkInterface* iface;

         if ( isWirelessInterface( str ) )

         {

             iface = new OWirelessNetworkInterface( this, (const char*) str );

             odebug << "ONetwork: interface '" << str << "' has Wireless Extensions" << oendl;

         }

         else

         {

             iface = new ONetworkInterface( this, (const char*) str );

         }

         _interfaces.insert( str, iface );

         s.readLine();

     }

 }

 

 

 short ONetwork::wirelessExtensionVersion()

 {

     return WIRELESS_EXT;

 }

 

 

 int ONetwork::count() const

 {

     return _interfaces.count();

 }

 

 

 ONetworkInterface* ONetwork::interface( const QString& iface ) const

 {

     return _interfaces[iface];

 }

 

 

 ONetwork* ONetwork::instance()

 {

     if ( !_instance ) _instance = new ONetwork();

     return _instance;

 }

 

 

 ONetwork::InterfaceIterator ONetwork::iterator() const

 {

     return ONetwork::InterfaceIterator( _interfaces );

 }

 

 

 bool ONetwork::isPresent( const char* name ) const

 {

     int sfd = socket( AF_INET, SOCK_STREAM, 0 );

     struct ifreq ifr;

     memset( &ifr, 0, sizeof( struct ifreq ) );

     strcpy( (char*) &ifr.ifr_name, name );

     int result = ::ioctl( sfd, SIOCGIFFLAGS, &ifr );

     return result != -1;

 }

 

 

 bool ONetwork::isWirelessInterface( const char* name ) const

 {

     int sfd = socket( AF_INET, SOCK_STREAM, 0 );

     struct iwreq iwr;

     memset( &iwr, 0, sizeof( struct iwreq ) );

     strcpy( (char*) &iwr.ifr_name, name );

     int result = ::ioctl( sfd, SIOCGIWNAME, &iwr );

     return result != -1;

 }

 

 /*======================================================================================

  * ONetworkInterface

  *======================================================================================*/

 

 ONetworkInterface::ONetworkInterface( QObject* parent, const char* name )

                  :QObject( parent, name ),

                  _sfd( socket( AF_INET, SOCK_DGRAM, 0 ) ), _mon( 0 )

 {

     odebug << "ONetworkInterface::ONetworkInterface()" << oendl;

     init();

 }

 

 

 struct ifreq& ONetworkInterface::ifr() const

 {

     return _ifr;

 }

 

 

 void ONetworkInterface::init()

 {

     odebug << "ONetworkInterface::init()" << oendl;

 

     memset( &_ifr, 0, sizeof( struct ifreq ) );

 

     if ( _sfd == -1 )

     {

         odebug << "ONetworkInterface::init(): Warning - can't get socket for device '" << name() << "'" << oendl;

         return;

     }

 }

 

 

 bool ONetworkInterface::ioctl( int call, struct ifreq& ifreq ) const

 {

     #ifndef NODEBUG

     int result = ::ioctl( _sfd, call, &ifreq );

     if ( result == -1 )

         odebug << "ONetworkInterface::ioctl (" << name() << ") call '" << debugmapper->map( call )

                << "' FAILED! " << result << " (" << strerror( errno ) << ")" << oendl;

     else

         odebug << "ONetworkInterface::ioctl (" << name() << ") call '" << debugmapper->map( call )

                << "' - Status: Ok." << oendl;

     return ( result != -1 );

     #else

     return ::ioctl( _sfd, call, &ifreq ) != -1;

     #endif

 }

 

 

 bool ONetworkInterface::ioctl( int call ) const

 {

     strcpy( _ifr.ifr_name, name() );

     return ioctl( call, _ifr );

 }

 

 

 bool ONetworkInterface::isLoopback() const

 {

     ioctl( SIOCGIFFLAGS );

     return _ifr.ifr_flags & IFF_LOOPBACK;

 }

 

 

 bool ONetworkInterface::setUp( bool b )

 {

     ioctl( SIOCGIFFLAGS );

     if ( b ) _ifr.ifr_flags |= IFF_UP;

     else   _ifr.ifr_flags &= (~IFF_UP);

     return ioctl( SIOCSIFFLAGS );

 }

 

 

 bool ONetworkInterface::isUp() const

 {

     ioctl( SIOCGIFFLAGS );

     return _ifr.ifr_flags & IFF_UP;

 }

 

 

 void ONetworkInterface::setIPV4Address( const QHostAddress& addr )

 {

     struct sockaddr_in *sa = (struct sockaddr_in *) &_ifr.ifr_addr;

     sa->sin_family = AF_INET;

     sa->sin_port = 0;

     sa->sin_addr.s_addr = htonl( addr.ip4Addr() );

     ioctl( SIOCSIFADDR );

 }

 

 

 QString ONetworkInterface::ipV4Address() const

 {

     if ( ioctl( SIOCGIFADDR ) )

     {

         struct sockaddr_in* sa = (struct sockaddr_in *) &_ifr.ifr_addr;

         //FIXME: Use QHostAddress here

         return QString( inet_ntoa( sa->sin_addr ) );

     }

     else

         return "<unknown>";

 

 }

 

 

 void ONetworkInterface::setMacAddress( const OMacAddress& addr )

 {

     _ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;

     memcpy( &_ifr.ifr_hwaddr.sa_data, addr.native(), 6 );

     ioctl( SIOCSIFHWADDR );

 }

 

 

 OMacAddress ONetworkInterface::macAddress() const

 {

     if ( ioctl( SIOCGIFHWADDR ) )

     {

         return OMacAddress( _ifr );

     }

     else

     {

         return OMacAddress::unknown;

     }

 }

 

 

 void ONetworkInterface::setIPV4Netmask( const QHostAddress& addr )

 {

     struct sockaddr_in *sa = (struct sockaddr_in *) &_ifr.ifr_addr;

     sa->sin_family = AF_INET;

     sa->sin_port = 0;

     sa->sin_addr.s_addr = htonl( addr.ip4Addr() );

     ioctl( SIOCSIFNETMASK );

 }

 

 

 QString ONetworkInterface::ipV4Netmask() const

 {

     if ( ioctl( SIOCGIFNETMASK ) )

     {

         struct sockaddr_in* sa = (struct sockaddr_in *) &_ifr.ifr_addr;

         //FIXME: Use QHostAddress here

         return QString( inet_ntoa( sa->sin_addr ) );

     }

     else

         return "<unknown>";

 }

 

 

 int ONetworkInterface::dataLinkType() const

 {

     if ( ioctl( SIOCGIFHWADDR ) )

     {

         return _ifr.ifr_hwaddr.sa_family;

     }

     else

     {

         return -1;

     }

 }

 

 

 void ONetworkInterface::setMonitoring( OMonitoringInterface* m )

 {

     _mon = m;

     odebug << "ONetwork::setMonitoring(): Installed monitoring driver '" << m->name() << "' on interface '" << name() << "'" << oendl;

 }

 

 

 OMonitoringInterface* ONetworkInterface::monitoring() const

 {

     return _mon;

 }

 

 

 ONetworkInterface::~ONetworkInterface()

 {

     odebug << "ONetworkInterface::~ONetworkInterface()" << oendl;

     if ( _sfd != -1 ) ::close( _sfd );

 }

 

 

 bool ONetworkInterface::setPromiscuousMode( bool b )

 {

     ioctl( SIOCGIFFLAGS );

     if ( b ) _ifr.ifr_flags |= IFF_PROMISC;

     else   _ifr.ifr_flags &= (~IFF_PROMISC);

     return ioctl( SIOCSIFFLAGS );

 }

 

 

 bool ONetworkInterface::promiscuousMode() const

 {

     ioctl( SIOCGIFFLAGS );

     return _ifr.ifr_flags & IFF_PROMISC;

 }

 

 

 bool ONetworkInterface::isWireless() const

 {

     return ioctl( SIOCGIWNAME );

 }

 

 

 /*======================================================================================

  * OChannelHopper

  *======================================================================================*/

 

 OChannelHopper::OChannelHopper( OWirelessNetworkInterface* iface )

                :QObject( 0, "Mickey's funky hopper" ),

                _iface( iface ), _interval( 0 ), _tid( 0 )

 {

     int _maxChannel = iface->channels()+1;

     // generate fancy hopping sequence honoring the device capabilities

     if ( _maxChannel >=  1 ) _channels.append(  1 );

     if ( _maxChannel >=  7 ) _channels.append(  7 );

     if ( _maxChannel >= 13 ) _channels.append( 13 );

     if ( _maxChannel >=  2 ) _channels.append(  2 );

     if ( _maxChannel >=  8 ) _channels.append(  8 );

     if ( _maxChannel >=  3 ) _channels.append(  3 );

     if ( _maxChannel >= 14 ) _channels.append( 14 );

     if ( _maxChannel >=  9 ) _channels.append(  9 );

     if ( _maxChannel >=  4 ) _channels.append(  4 );

     if ( _maxChannel >= 10 ) _channels.append( 10 );

     if ( _maxChannel >=  5 ) _channels.append(  5 );

     if ( _maxChannel >= 11 ) _channels.append( 11 );

     if ( _maxChannel >=  6 ) _channels.append(  6 );

     if ( _maxChannel >= 12 ) _channels.append( 12 );

     _channel = _channels.begin();

 

 }

 

 

 OChannelHopper::~OChannelHopper()

 {

 }

 

 

 bool OChannelHopper::isActive() const

 {

     return _tid;

 }

 

 

 int OChannelHopper::channel() const

 {

     return *_channel;

 }

 

 

 void OChannelHopper::timerEvent( QTimerEvent* )

 {

     _iface->setChannel( *_channel );

     emit( hopped( *_channel ) );

     odebug << "OChannelHopper::timerEvent(): set channel " << *_channel << " on interface '" << _iface->name() << "'" << oendl;

     if ( ++_channel == _channels.end() ) _channel = _channels.begin();

 }

 

 

 void OChannelHopper::setInterval( int interval )

 {

     if ( interval == _interval )

         return;

 

     if ( _interval )

         killTimer( _tid );

 

     _tid = 0;

     _interval = interval;

 

     if ( _interval )

     {

         _tid = startTimer( interval );

     }

 }

 

 

 int OChannelHopper::interval() const

 {

     return _interval;

 }

 

 

 /*======================================================================================

@@ -625,624 +625,625 @@ int OWirelessNetworkInterface::channel() const
     {

         return -1;

     }

     else

     {

         return _channels[ static_cast<int>(double( _iwr.u.freq.m ) * pow( 10.0, _iwr.u.freq.e ) / 1000000) ];

     }

 }

 

 

 void OWirelessNetworkInterface::setChannel( int c ) const

 {

     if ( !c )

     {

         oerr << "OWirelessNetworkInterface::setChannel( 0 ) called - fix your application!" << oendl;

         return;

     }

 

     if ( !_mon )

     {

         memset( &_iwr, 0, sizeof( struct iwreq ) );

         _iwr.u.freq.m = c;

         _iwr.u.freq.e = 0;

         wioctl( SIOCSIWFREQ );

     }

     else

     {

         _mon->setChannel( c );

     }

 }

 

 

 double OWirelessNetworkInterface::frequency() const

 {

     if ( !wioctl( SIOCGIWFREQ ) )

     {

         return -1.0;

     }

     else

     {

         return double( _iwr.u.freq.m ) * pow( 10.0, _iwr.u.freq.e ) / 1000000000.0;

     }

 }

 

 

 int OWirelessNetworkInterface::channels() const

 {

     return _channels.count();

 }

 

 

 void OWirelessNetworkInterface::setChannelHopping( int interval )

 {

     if ( !_hopper ) _hopper = new OChannelHopper( this );

     _hopper->setInterval( interval );

     //FIXME: When and by whom will the channel hopper be deleted?

     //TODO: rely on QObject hierarchy

 }

 

 

 int OWirelessNetworkInterface::channelHopping() const

 {

     return _hopper->interval();

 }

 

 

 OChannelHopper* OWirelessNetworkInterface::channelHopper() const

 {

     return _hopper;

 }

 

 

 void OWirelessNetworkInterface::commit() const

 {

     wioctl( SIOCSIWCOMMIT );

 }

 

 

 void OWirelessNetworkInterface::setMode( const QString& newMode )

 {

     #ifdef FINALIZE

     QString currentMode = mode();

     if ( currentMode == newMode ) return;

     #endif

 

     odebug << "OWirelessNetworkInterface::setMode(): trying to set mode " << newMode << oendl;

 

     _iwr.u.mode = stringToMode( newMode );

 

     if ( _iwr.u.mode != IW_MODE_MONITOR )

     {

         // IWR.U.MODE WIRD DURCH ABFRAGE DES MODE HIER PLATTGEMACHT!!!!!!!!!!!!!!!!!!!!! DEPP!

         _iwr.u.mode = stringToMode( newMode );

         wioctl( SIOCSIWMODE );

 

         // special iwpriv fallback for monitor mode (check if we're really out of monitor mode now)

 

         if ( mode() == "monitor" )

         {

             odebug << "OWirelessNetworkInterface::setMode(): SIOCSIWMODE not sufficient - trying fallback to iwpriv..." << oendl;

             if ( _mon )

                 _mon->setEnabled( false );

             else

                 odebug << "ONetwork(): can't switch monitor mode without installed monitoring interface" << oendl;

         }

 

     }

     else    // special iwpriv fallback for monitor mode

     {

         if ( wioctl( SIOCSIWMODE ) )

         {

             odebug << "OWirelessNetworkInterface::setMode(): IW_MODE_MONITOR ok" << oendl;

         }

         else

         {

             odebug << "OWirelessNetworkInterface::setMode(): SIOCSIWMODE not working - trying fallback to iwpriv..." << oendl;

 

             if ( _mon )

                 _mon->setEnabled( true );

             else

                 odebug << "ONetwork(): can't switch monitor mode without installed monitoring interface" << oendl;

         }

     }

 }

 

 

 QString OWirelessNetworkInterface::mode() const

 {

     memset( &_iwr, 0, sizeof( struct iwreq ) );

 

     if ( !wioctl( SIOCGIWMODE ) )

     {

         return "<unknown>";

     }

 

     odebug << "OWirelessNetworkInterface::setMode(): WE's idea of current mode seems to be " << modeToString( _iwr.u.mode ) << oendl;

 

     // legacy compatible monitor mode check

 

     if ( dataLinkType() == ARPHRD_IEEE80211 || dataLinkType() == 802 )

     {

         return "monitor";

     }

     else

     {

         return modeToString( _iwr.u.mode );

     }

 }

 

 void OWirelessNetworkInterface::setNickName( const QString& nickname )

 {

     _iwr.u.essid.pointer = const_cast<char*>( (const char*) nickname );

     _iwr.u.essid.length = nickname.length();

     wioctl( SIOCSIWNICKN );

 }

 

 

 QString OWirelessNetworkInterface::nickName() const

 {

     char str[IW_ESSID_MAX_SIZE];

     _iwr.u.data.pointer = &str[0];

     _iwr.u.data.length = IW_ESSID_MAX_SIZE;

     if ( !wioctl( SIOCGIWNICKN ) )

     {

         return "<unknown>";

     }

     else

     {

         str[_iwr.u.data.length] = 0x0; // some drivers (e.g. wlan-ng) don't zero-terminate the string

         return str;

     }

 }

 

 

 void OWirelessNetworkInterface::setPrivate( const QString& call, int numargs, ... )

 {

     OPrivateIOCTL* priv = static_cast<OPrivateIOCTL*>( child( (const char*) call ) );

     if ( !priv )

     {

         owarn << "OWirelessNetworkInterface::setPrivate(): interface '" << name()

               << "' does not support private ioctl '" << call << "'" << oendl;

         return;

     }

     if ( priv->numberSetArgs() != numargs )

     {

         owarn << "OWirelessNetworkInterface::setPrivate(): parameter count not matching. '"

               << call << "' expects " << priv->numberSetArgs() << ", but got " << numargs << oendl;

         return;

     }

 

     odebug << "OWirelessNetworkInterface::setPrivate(): about to call '" << call << "' on interface '" << name() << "'" << oendl;

     memset( &_iwr, 0, sizeof _iwr );

     va_list argp;

     va_start( argp, numargs );

     for ( int i = 0; i < numargs; ++i )

     {

         priv->setParameter( i, va_arg( argp, int ) );

     }

     va_end( argp );

     priv->invoke();

 }

 

 

 void OWirelessNetworkInterface::getPrivate( const QString& call )

 {

     oerr << "OWirelessNetworkInterface::getPrivate() is not implemented yet." << oendl;

 }

 

 

 bool OWirelessNetworkInterface::hasPrivate( const QString& call )

 {

     return child( (const char*) call );

 }

 

 

 QString OWirelessNetworkInterface::SSID() const

 {

     char str[IW_ESSID_MAX_SIZE];

     _iwr.u.essid.pointer = &str[0];

     _iwr.u.essid.length = IW_ESSID_MAX_SIZE;

     if ( !wioctl( SIOCGIWESSID ) )

     {

         return "<unknown>";

     }

     else

     {

         return str;

     }

 }

 

 

 void OWirelessNetworkInterface::setSSID( const QString& ssid )

 {

     _iwr.u.essid.pointer = const_cast<char*>( (const char*) ssid );

     _iwr.u.essid.length = ssid.length();

     wioctl( SIOCSIWESSID );

 }

 

 

 OStationList* OWirelessNetworkInterface::scanNetwork()

 {

     _iwr.u.param.flags = IW_SCAN_DEFAULT;

     _iwr.u.param.value = 0;

     if ( !wioctl( SIOCSIWSCAN ) )

     {

         return 0;

     }

 

     OStationList* stations = new OStationList();

 

     int timeout = 1000000;

 

     odebug << "ONetworkInterface::scanNetwork() - scan started." << oendl;

 

     bool results = false;

     struct timeval tv;

     tv.tv_sec = 0;

     tv.tv_usec = 250000; // initial timeout ~ 250ms

     char buffer[IW_SCAN_MAX_DATA];

 

     while ( !results && timeout > 0 )

     {

         timeout -= tv.tv_usec;

         select( 0, 0, 0, 0, &tv );

 

         _iwr.u.data.pointer = &buffer[0];

         _iwr.u.data.flags = 0;

         _iwr.u.data.length = sizeof buffer;

         if ( wioctl( SIOCGIWSCAN ) )

         {

             results = true;

             continue;

         }

         else if ( errno == EAGAIN)

         {

             odebug << "ONetworkInterface::scanNetwork() - scan in progress..." << oendl;

             #if 0

             if ( qApp )

             {

                 qApp->processEvents( 100 );

                 continue;

             }

             #endif

             tv.tv_sec = 0;

             tv.tv_usec = 100000;

             continue;

         }

     }

 

     odebug << "ONetworkInterface::scanNetwork() - scan finished." << oendl;

 

     if ( results )

     {

         odebug << " - result length = " << _iwr.u.data.length << oendl;

         if ( !_iwr.u.data.length )

         {

             odebug << " - no results (empty neighbourhood)" << oendl;

             return stations;

         }

 

         odebug << " - results are in!" << oendl;

         dumpBytes( (const unsigned char*) &buffer[0], _iwr.u.data.length );

 

         // parse results

 

         int offset = 0;

         struct iw_event* we = (struct iw_event*) &buffer[0];

 

         while ( offset < _iwr.u.data.length )

         {

             //const char* cmd = *(*_ioctlmap)[we->cmd];

             //if ( !cmd ) cmd = "<unknown>";

             odebug << " - reading next event... cmd=" << we->cmd << ", len=" << we->len << oendl;

             switch (we->cmd)

             {

                 case SIOCGIWAP:

                 {

                     odebug << "SIOCGIWAP" << oendl;

                     stations->append( new OStation() );

                     stations->last()->macAddress = (const unsigned char*) &we->u.ap_addr.sa_data[0];

                     break;

                 }

                 case SIOCGIWMODE:

                 {

                     odebug << "SIOCGIWMODE" << oendl;

                     stations->last()->type = modeToString( we->u.mode );

                     break;

                 }

                 case SIOCGIWFREQ:

                 {

                     odebug << "SIOCGIWFREQ" << oendl;

                     stations->last()->channel = _channels[ static_cast<int>(double( we->u.freq.m ) * pow( 10.0, we->u.freq.e ) / 1000000) ];

                     break;

                 }

                 case SIOCGIWESSID:

                 {

                     odebug << "SIOCGIWESSID" << oendl;

                     stations->last()->ssid = we->u.essid.pointer;

                     break;

                 }

                 case SIOCGIWSENS: odebug << "SIOCGIWSENS" << oendl; break;

                 case SIOCGIWENCODE: odebug << "SIOCGIWENCODE" << oendl; break;

                 case IWEVTXDROP: odebug << "IWEVTXDROP" << oendl; break;         /* Packet dropped to excessive retry */

                 case IWEVQUAL: odebug << "IWEVQUAL" << oendl; break;             /* Quality part of statistics (scan) */

                 case IWEVCUSTOM: odebug << "IWEVCUSTOM" << oendl; break;         /* Driver specific ascii string */

                 case IWEVREGISTERED: odebug << "IWEVREGISTERED" << oendl; break; /* Discovered a new node (AP mode) */

                 case IWEVEXPIRED: odebug << "IWEVEXPIRED" << oendl; break;       /* Expired a node (AP mode) */

                 default: odebug << "unhandled event" << oendl;

             }

 

             offset += we->len;

             we = (struct iw_event*) &buffer[offset];

         }

         return stations;

 

         return stations;

 

     }

     else

     {

         odebug << " - no results (timeout) :(" << oendl;

         return stations;

     }

 }

 

 

 int OWirelessNetworkInterface::signalStrength() const

 {

     iw_statistics stat;

     ::memset( &stat, 0, sizeof stat );

     _iwr.u.data.pointer = (char*) &stat;

     _iwr.u.data.flags = 0;

     _iwr.u.data.length = sizeof stat;

 

     if ( !wioctl( SIOCGIWSTATS ) )

     {

         return -1;

     }

 

     int max = _range.max_qual.qual;

     int cur = stat.qual.qual;

     int lev = stat.qual.level; //FIXME: Do something with them?

     int noi = stat.qual.noise; //FIXME: Do something with them?

 

-    return cur*100/max;

+

+    return max != 0 ? cur*100/max: -1;

 }

 

 

 bool OWirelessNetworkInterface::wioctl( int call, struct iwreq& iwreq ) const

 {

     #ifndef NODEBUG

     int result = ::ioctl( _sfd, call, &iwreq );

 

     if ( result == -1 )

         odebug << "ONetworkInterface::wioctl (" << name() << ") call '"

                << debugmapper->map( call ) << "' FAILED! " << result << " (" << strerror( errno ) << ")" << oendl;

     else

         odebug << "ONetworkInterface::wioctl (" << name() << ") call '"

                << debugmapper->map( call ) << "' - Status: Ok." << oendl;

 

     return ( result != -1 );

     #else

     return ::ioctl( _sfd, call, &iwreq ) != -1;

     #endif

 }

 

 

 bool OWirelessNetworkInterface::wioctl( int call ) const

 {

     strcpy( _iwr.ifr_name, name() );

     return wioctl( call, _iwr );

 }

 

 

 /*======================================================================================

  * OMonitoringInterface

  *======================================================================================*/

 

 OMonitoringInterface::OMonitoringInterface( ONetworkInterface* iface, bool prismHeader )

                       :_if( static_cast<OWirelessNetworkInterface*>( iface ) ), _prismHeader( prismHeader )

 {

 }

 

 

 OMonitoringInterface::~OMonitoringInterface()

 {

 }

 

 

 void OMonitoringInterface::setChannel( int c )

 {

     // use standard WE channel switching protocol

     memset( &_if->_iwr, 0, sizeof( struct iwreq ) );

     _if->_iwr.u.freq.m = c;

     _if->_iwr.u.freq.e = 0;

     _if->wioctl( SIOCSIWFREQ );

 }

 

 

 void OMonitoringInterface::setEnabled( bool b )

 {

 }

 

 

 /*======================================================================================

  * OCiscoMonitoringInterface

  *======================================================================================*/

 

 OCiscoMonitoringInterface::OCiscoMonitoringInterface( ONetworkInterface* iface, bool prismHeader )

                            :OMonitoringInterface( iface, prismHeader )

 {

     iface->setMonitoring( this );

 }

 

 

 OCiscoMonitoringInterface::~OCiscoMonitoringInterface()

 {

 }

 

 

 void OCiscoMonitoringInterface::setEnabled( bool b )

 {

     QString fname;

     fname.sprintf( "/proc/driver/aironet/%s", (const char*) _if->name() );

     QFile f( fname );

     if ( !f.exists() ) return;

 

     if ( f.open( IO_WriteOnly ) )

     {

         QTextStream s( &f );

         s << "Mode: r";

         s << "Mode: y";

         s << "XmitPower: 1";

     }

 

     // flushing and closing will be done automatically when f goes out of scope

 }

 

 

 QString OCiscoMonitoringInterface::name() const

 {

     return "cisco";

 }

 

 

 void OCiscoMonitoringInterface::setChannel( int )

 {

     // cisco devices automatically switch channels when in monitor mode

 }

 

 

 /*======================================================================================

  * OWlanNGMonitoringInterface

  *======================================================================================*/

 

 

 OWlanNGMonitoringInterface::OWlanNGMonitoringInterface( ONetworkInterface* iface, bool prismHeader )

                            :OMonitoringInterface( iface, prismHeader )

 {

     iface->setMonitoring( this );

 }

 

 

 OWlanNGMonitoringInterface::~OWlanNGMonitoringInterface()

 {

 }

 

 

 void OWlanNGMonitoringInterface::setEnabled( bool b )

 {

     //FIXME: do nothing if its already in the same mode

 

     QString enable = b ? "true" : "false";

     QString prism = _prismHeader ? "true" : "false";

     QString cmd;

     cmd.sprintf( "$(which wlanctl-ng) %s lnxreq_wlansniff channel=%d enable=%s prismheader=%s",

                  (const char*) _if->name(), 1, (const char*) enable, (const char*) prism );

     system( cmd );

 }

 

 

 QString OWlanNGMonitoringInterface::name() const

 {

     return "wlan-ng";

 }

 

 

 void OWlanNGMonitoringInterface::setChannel( int c )

 {

     //NOTE: Older wlan-ng drivers automatically hopped channels while lnxreq_wlansniff=true. Newer ones don't.

 

     QString enable = "true"; //_if->monitorMode() ? "true" : "false";

     QString prism = _prismHeader ? "true" : "false";

     QString cmd;

     cmd.sprintf( "$(which wlanctl-ng) %s lnxreq_wlansniff channel=%d enable=%s prismheader=%s",

                  (const char*) _if->name(), c, (const char*) enable, (const char*) prism );

     system( cmd );

 }

 

 

 /*======================================================================================

  * OHostAPMonitoringInterface

  *======================================================================================*/

 

 OHostAPMonitoringInterface::OHostAPMonitoringInterface( ONetworkInterface* iface, bool prismHeader )

                            :OMonitoringInterface( iface, prismHeader )

 {

     iface->setMonitoring( this );

 }

 

 OHostAPMonitoringInterface::~OHostAPMonitoringInterface()

 {

 }

 

 void OHostAPMonitoringInterface::setEnabled( bool b )

 {

     int monitorCode = _prismHeader ? 1 : 2;

     if ( b )

     {

         _if->setPrivate( "monitor", 1, monitorCode );

     }

     else

     {

         _if->setPrivate( "monitor", 1, 0 );

     }

 }

 

 

 QString OHostAPMonitoringInterface::name() const

 {

     return "hostap";

 }

 

 

 /*======================================================================================

  * OOrinocoNetworkInterface

  *======================================================================================*/

 

 OOrinocoMonitoringInterface::OOrinocoMonitoringInterface( ONetworkInterface* iface, bool prismHeader )

                            :OMonitoringInterface( iface, prismHeader )

 {

     iface->setMonitoring( this );

 }

 

 

 OOrinocoMonitoringInterface::~OOrinocoMonitoringInterface()

 {

 }

 

 

 void OOrinocoMonitoringInterface::setChannel( int c )

 {

     if ( !_if->hasPrivate( "monitor" ) )

     {

         this->OMonitoringInterface::setChannel( c );

     }

     else

     {

         int monitorCode = _prismHeader ? 1 : 2;

         _if->setPrivate( "monitor", 2, monitorCode, c );

     }

 }

 

 

 void OOrinocoMonitoringInterface::setEnabled( bool b )

 {

     if ( b )

     {

         setChannel( 1 );

     }

     else

     {

         _if->setPrivate( "monitor", 2, 0, 0 );

     }

 }

 

 

 QString OOrinocoMonitoringInterface::name() const

 {

     return "orinoco";

 }

-
-}
-}
+

+}

+}