| -rw-r--r-- | libopie2/opienet/onetwork.cpp | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/libopie2/opienet/onetwork.cpp b/libopie2/opienet/onetwork.cpp index f4bdbe0..05513f8 100644 --- a/libopie2/opienet/onetwork.cpp +++ b/libopie2/opienet/onetwork.cpp @@ -468,204 +468,202 @@ OWirelessNetworkInterface::OWirelessNetworkInterface( QObject* parent, const cha { odebug << "OWirelessNetworkInterface::OWirelessNetworkInterface()" << oendl; init(); } OWirelessNetworkInterface::~OWirelessNetworkInterface() { } struct iwreq& OWirelessNetworkInterface::iwr() const { return _iwr; } void OWirelessNetworkInterface::init() { odebug << "OWirelessNetworkInterface::init()" << oendl; memset( &_iwr, 0, sizeof( struct iwreq ) ); buildInformation(); buildPrivateList(); dumpInformation(); } bool OWirelessNetworkInterface::isAssociated() const { //FIXME: handle different modes return !(associatedAP() == OMacAddress::unknown); } void OWirelessNetworkInterface::setAssociatedAP( const OMacAddress& mac ) const { _iwr.u.ap_addr.sa_family = ARPHRD_ETHER; ::memcpy(_iwr.u.ap_addr.sa_data, mac.native(), ETH_ALEN); wioctl( SIOCSIWAP ); } OMacAddress OWirelessNetworkInterface::associatedAP() const { if ( ioctl( SIOCGIWAP ) ) return (const unsigned char*) &_ifr.ifr_hwaddr.sa_data[0]; else return OMacAddress::unknown; } 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 + char buffer[len]; 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.length = sizeof buffer; wrq.u.data.flags = 0; if ( ::ioctl( _sfd, SIOCGIWRANGE, &wrq ) == -1 ) { - owarn << "OWirelessNetworkInterface::buildInformation(): Can't get channel information - using default values." << oendl; + owarn << "OWirelessNetworkInterface::buildInformation(): Can't get driver information (" << strerror( errno ) << ") - 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 ); odebug << "OWirelessNetworkInterface::buildInformation: Adding frequency " << freq << " as channel " << i+1 << oendl; _channels.insert( freq, i+1 ); } } memcpy( &_range, buffer, sizeof( struct iw_range ) ); odebug << "OWirelessNetworkInterface::buildInformation(): Information block constructed." << oendl; - free(buffer); } short OWirelessNetworkInterface::wirelessExtensionDriverVersion() const { return _range.we_version_compiled; } 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; + owarn << "OWirelessNetworkInterface::buildPrivateList(): Can't get private ioctl information (" << strerror( errno ) << ")." << 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; odebug << " - driver's idea of maximum throughput is " << _range.throughput << " bps = " << ( _range.throughput / 8 ) << " byte/s = " << ( _range.throughput / 8 / 1024 ) << " Kb/s = " << QString().sprintf("%f.2", float( _range.throughput ) / 8.0 / 1024.0 / 1024.0 ) << " Mb/s" << oendl; odebug << " - driver for '" << name() << "' (V" << _range.we_version_source << ") has been compiled against WE V" << _range.we_version_compiled << oendl; 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; |