API extension: ONetwork::isPresent( const char* name )

1 files changed, 17 insertions, 6 deletions

diff --git a/libopie2/opienet/onetwork.cpp b/libopie2/opienet/onetwork.cpp
index 915814d..e5b091f 100644
--- a/libopie2/opienet/onetwork.cpp
+++ b/libopie2/opienet/onetwork.cpp
@@ -51,192 +51,203 @@
 #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>

 DebugMapper* debugmapper = new DebugMapper();

 #endif

 

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

  * ONetwork

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

 

 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() );

@@ -489,197 +500,197 @@ void OWirelessNetworkInterface::buildInformation()
 {

     //ML: If you listen carefully enough, you can hear lots of WLAN drivers suck

     //ML: The HostAP drivers need more than sizeof struct_iw range to complete

     //ML: SIOCGIWRANGE otherwise they fail with "Invalid Argument Length".

     //ML: The Wlan-NG drivers on the otherside fail (segfault!) if you allocate

     //ML: _too much_ space. This is damn shitty crap *sigh*

     //ML: We allocate a large memory region in RAM and check whether the

     //ML: driver pollutes this extra space. The complaint will be made on stdout,

     //ML: so please forward this...

 

     struct iwreq wrq;

     int len = sizeof( struct iw_range )*2;

     char *buffer = (char*) malloc( len );

     //FIXME: Validate if we actually got the memory block

     memset( buffer, 0, len );

     memcpy( wrq.ifr_name, name(), IFNAMSIZ);

     wrq.u.data.pointer = (caddr_t) buffer;

     wrq.u.data.length = sizeof( struct iw_range );

     wrq.u.data.flags = 0;

 

     if ( ::ioctl( _sfd, SIOCGIWRANGE, &wrq ) == -1 )

     {

         owarn << "OWirelessNetworkInterface::buildInformation(): Can't get channel information - using default values." << oendl;

         _channels.insert( 2412,  1 ); // 2.412 GHz

         _channels.insert( 2417,  2 ); // 2.417 GHz

         _channels.insert( 2422,  3 ); // 2.422 GHz

         _channels.insert( 2427,  4 ); // 2.427 GHz

         _channels.insert( 2432,  5 ); // 2.432 GHz

         _channels.insert( 2437,  6 ); // 2.437 GHz

         _channels.insert( 2442,  7 ); // 2.442 GHz

         _channels.insert( 2447,  8 ); // 2.447 GHz

         _channels.insert( 2452,  9 ); // 2.452 GHz

         _channels.insert( 2457, 10 ); // 2.457 GHz

         _channels.insert( 2462, 11 ); // 2.462 GHz

 

         memset( &_range, 0, sizeof( struct iw_range ) );

     }

     else

     {

         // <check if the driver overwrites stuff>

         int max = 0;

         for ( int r = sizeof( struct iw_range ); r < len; r++ )

             if (buffer[r] != 0)

                 max = r;

         if (max > 0)

         {

             owarn << "OWirelessNetworkInterface::buildInformation(): Driver for wireless interface '" << name()

                   << "' sucks! It overwrote the buffer end with at least " << max - sizeof( struct iw_range ) << " bytes!" << oendl;

         }

         // </check if the driver overwrites stuff>

 

         struct iw_range range;

         memcpy( &range, buffer, sizeof range );

 

         odebug << "OWirelessNetworkInterface::buildInformation(): Interface reported to have " << (int) range.num_frequency << " channels." << oendl;

         for ( int i = 0; i < range.num_frequency; ++i )

         {

             int freq = (int) ( double( range.freq[i].m ) * pow( 10.0, range.freq[i].e ) / 1000000.0 );

             _channels.insert( freq, i+1 );

         }

     }

 

     memcpy( &_range, buffer, sizeof( struct iw_range ) );

     odebug << "OWirelessNetworkInterface::buildInformation(): Information block constructed." << oendl;

     free(buffer);

 }

 

 

 void OWirelessNetworkInterface::buildPrivateList()

 {

     odebug << "OWirelessNetworkInterface::buildPrivateList()" << oendl;

 

     struct iw_priv_args priv[IW_MAX_PRIV_DEF];

 

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

     _iwr.u.data.length = IW_MAX_PRIV_DEF; // length in terms of number of (sizeof iw_priv_args), not (sizeof iw_priv_args) itself

     _iwr.u.data.flags = 0;

 

     if ( !wioctl( SIOCGIWPRIV ) )

     {

         owarn << "OWirelessNetworkInterface::buildPrivateList(): Can't get private ioctl information." << oendl;

         return;

     }

 

     for ( int i = 0; i < _iwr.u.data.length; ++i )

     {

         new OPrivateIOCTL( this, priv[i].name, priv[i].cmd, priv[i].get_args, priv[i].set_args );

     }

     odebug << "OWirelessNetworkInterface::buildPrivateList(): Private ioctl list constructed." << oendl;

 }

 

 

 void OWirelessNetworkInterface::dumpInformation() const

 {

     odebug << "OWirelessNetworkInterface::() -------------- dumping information block ----------------" << oendl;

 

-    qDebug( " - driver's idea of maximum throughput is %d bps = %d byte/s = %d Kb/s = %f.2 Mb/s", 

+    qDebug( " - driver's idea of maximum throughput is %d bps = %d byte/s = %d Kb/s = %f.2 Mb/s",

             _range.throughput, _range.throughput / 8, _range.throughput / 8 / 1024, float( _range.throughput ) / 8.0 / 1024.0 / 1024.0 );

     qDebug( " - driver for '%s' (V%d) has been compiled against WE V%d",

              name(), _range.we_version_source, _range.we_version_compiled );

-             

+

     if ( _range.we_version_compiled != WIRELESS_EXT )

     {

         owarn << "Version mismatch! WE_DRIVER = " << _range.we_version_compiled << " and WE_OPIENET = " << WIRELESS_EXT << oendl;

     }

 

     odebug << "OWirelessNetworkInterface::() ---------------------------------------------------------" << oendl;

 }

 

 

 int OWirelessNetworkInterface::channel() const

 {

     //FIXME: When monitoring enabled, then use it

     //FIXME: to gather the current RF channel

     //FIXME: Until then, get active channel from hopper.

     if ( _hopper && _hopper->isActive() )

         return _hopper->channel();

 

     if ( !wioctl( SIOCGIWFREQ ) )

     {

         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 );

 }

 

 

@@ -879,209 +890,209 @@ OStationList* OWirelessNetworkInterface::scanNetwork()
             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;

 }

 

 

 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