Diffstat (limited to 'libopie2/opienet/onetwork.cpp') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | libopie2/opienet/onetwork.cpp | 57 |
1 files changed, 40 insertions, 17 deletions
diff --git a/libopie2/opienet/onetwork.cpp b/libopie2/opienet/onetwork.cpp index 66fa215..789e8ca 100644 --- a/libopie2/opienet/onetwork.cpp +++ b/libopie2/opienet/onetwork.cpp @@ -115,77 +115,77 @@ ONetworkInterface* ONetwork::interface( QString iface ) const ONetwork* ONetwork::instance() { if ( !_instance ) _instance = new ONetwork(); return _instance; } ONetwork::InterfaceIterator ONetwork::iterator() const { return ONetwork::InterfaceIterator( _interfaces ); } bool ONetwork::isWirelessInterface( const char* name ) const { int sfd = socket( AF_INET, SOCK_STREAM, 0 ); - iwreqstruct iwr; - memset( &iwr, 0, sizeof( iwreqstruct ) ); + struct iwreq iwr; + memset( &iwr, 0, sizeof( struct iwreq ) ); strcpy( (char*) &iwr.ifr_name, name ); int result = ::ioctl( sfd, SIOCGIWNAME, &iwr ); if ( result == -1 ) qDebug( "ONetwork::ioctl(): SIOCGIWNAME failed: %d (%s)", result, strerror( errno ) ); else qDebug( "ONetwork::ioctl(): SIOCGIWNAME ok." ); return ( result != -1 ); } /*====================================================================================== * ONetworkInterface *======================================================================================*/ ONetworkInterface::ONetworkInterface( QObject* parent, const char* name ) :QObject( parent, name ), _sfd( socket( AF_INET, SOCK_DGRAM, 0 ) ), _mon( 0 ) { qDebug( "ONetworkInterface::ONetworkInterface()" ); init(); } -ifreqstruct& ONetworkInterface::ifr() const +struct ifreq& ONetworkInterface::ifr() const { return _ifr; } void ONetworkInterface::init() { qDebug( "ONetworkInterface::init()" ); memset( &_ifr, 0, sizeof( struct ifreq ) ); if ( _sfd == -1 ) { qDebug( "ONetworkInterface::init(): Warning - can't get socket for device '%s'", name() ); return; } } -bool ONetworkInterface::ioctl( int call, ifreqstruct& ifreq ) const +bool ONetworkInterface::ioctl( int call, struct ifreq& ifreq ) const { int result = ::ioctl( _sfd, call, &ifreq ); if ( result == -1 ) qDebug( "ONetworkInterface::ioctl(): Call %d - Status: Failed: %d (%s)", call, result, strerror( errno ) ); else qDebug( "ONetworkInterface::ioctl(): Call %d - Status: Ok.", call ); return ( result != -1 ); } bool ONetworkInterface::ioctl( int call ) const { strcpy( _ifr.ifr_name, name() ); return ioctl( call, _ifr ); } @@ -364,33 +364,33 @@ int OChannelHopper::interval() const * OWirelessNetworkInterface *======================================================================================*/ OWirelessNetworkInterface::OWirelessNetworkInterface( QObject* parent, const char* name ) :ONetworkInterface( parent, name ), _hopper( 0 ) { qDebug( "OWirelessNetworkInterface::OWirelessNetworkInterface()" ); init(); } OWirelessNetworkInterface::~OWirelessNetworkInterface() { } -iwreqstruct& OWirelessNetworkInterface::iwr() const +struct iwreq& OWirelessNetworkInterface::iwr() const { return _iwr; } void OWirelessNetworkInterface::init() { qDebug( "OWirelessNetworkInterface::init()" ); memset( &_iwr, 0, sizeof( struct iwreq ) ); buildChannelList(); buildPrivateList(); } QString OWirelessNetworkInterface::associatedAP() const { @@ -404,70 +404,93 @@ QString OWirelessNetworkInterface::associatedAP() const _ifr.ifr_hwaddr.sa_data[1]&0xff, _ifr.ifr_hwaddr.sa_data[2]&0xff, _ifr.ifr_hwaddr.sa_data[3]&0xff, _ifr.ifr_hwaddr.sa_data[4]&0xff, _ifr.ifr_hwaddr.sa_data[5]&0xff ); } else { mac = "<Unknown>"; } return mac; } void OWirelessNetworkInterface::buildChannelList() { - // IEEE802.11(b) radio frequency channels - struct iw_range range; - //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* - - _iwr.u.data.pointer = (char*) ⦥ - _iwr.u.data.length = IW_MAX_FREQUENCIES; //sizeof range; - _iwr.u.data.flags = 0; - - if ( !wioctl( SIOCGIWRANGE ) ) + //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 ) { qDebug( "OWirelessNetworkInterface::buildChannelList(): SIOCGIWRANGE failed (%s) - defaulting to 11 channels", strerror( errno ) ); _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 } 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) + { + qWarning( "OWirelessNetworkInterface::buildChannelList(): Driver for wireless interface '%s'" + "overwrote buffer end with at least %i bytes!\n", name(), max - sizeof( struct iw_range ) ); + } + // </check if the driver overwrites stuff> + + struct iw_range range; + memcpy( &range, buffer, sizeof range ); + qDebug( "OWirelessNetworkInterface::buildChannelList(): Interface %s reported to have %d channels.", name(), range.num_frequency ); 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 ); } } + qDebug( "OWirelessNetworkInterface::buildChannelList(): Channel list constructed." ); + free(buffer); } void OWirelessNetworkInterface::buildPrivateList() { qDebug( "OWirelessNetworkInterface::buildPrivateList()" ); 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 ) ) { qDebug( "OWirelessNetworkInterface::buildPrivateList(): SIOCGIWPRIV failed (%s) - can't get private ioctl information.", strerror( errno ) ); @@ -492,33 +515,33 @@ int OWirelessNetworkInterface::channel() const 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 ( !_mon ) { - memset( &_iwr, 0, sizeof( iwreqstruct ) ); + 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; @@ -626,33 +649,33 @@ QString OWirelessNetworkInterface::SSID() const } 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 ); } -bool OWirelessNetworkInterface::wioctl( int call, iwreqstruct& iwreq ) const +bool OWirelessNetworkInterface::wioctl( int call, struct iwreq& iwreq ) const { int result = ::ioctl( _sfd, call, &iwreq ); if ( result == -1 ) qDebug( "ONetworkInterface::wioctl(): Call %d - Status: Failed: %d (%s)", call, result, strerror( errno ) ); else qDebug( "ONetworkInterface::wioctl(): Call %d - Status: Ok.", call ); return ( result != -1 ); } bool OWirelessNetworkInterface::wioctl( int call ) const { strcpy( _iwr.ifr_name, name() ); return wioctl( call, _iwr ); } @@ -662,33 +685,33 @@ bool OWirelessNetworkInterface::wioctl( int call ) const *======================================================================================*/ OMonitoringInterface::OMonitoringInterface( ONetworkInterface* iface ) :_enabled( false ), _if( static_cast<OWirelessNetworkInterface*>( iface ) ) { } OMonitoringInterface::~OMonitoringInterface() { } void OMonitoringInterface::setChannel( int c ) { // use standard WE channel switching protocol - memset( &_if->_iwr, 0, sizeof( iwreqstruct ) ); + memset( &_if->_iwr, 0, sizeof( struct iwreq ) ); _if->_iwr.u.freq.m = c; _if->_iwr.u.freq.e = 0; _if->wioctl( SIOCSIWFREQ ); } bool OMonitoringInterface::enabled() const { return _enabled; } void OMonitoringInterface::setEnabled( bool b ) { // open a packet capturer here or leave this to // the client code? |