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#include "wextensions.h"
#include <qfile.h>
#include <qtextstream.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <math.h>
#define PROCNETWIRELESS "/proc/net/wireless"
#define IW_LOWER 140
#define IW_UPPER 200
/**
* Constructor. Sets hasWirelessExtensions
*/
WExtensions::WExtensions(QString interfaceName){
interface = interfaceName;
fd = socket( AF_INET, SOCK_DGRAM, 0 );
const char* buffer[200];
memset( &iwr, 0, sizeof( iwr ) );
iwr.u.essid.pointer = (caddr_t) buffer;
iwr.u.essid.length = IW_ESSID_MAX_SIZE;
iwr.u.essid.flags = 0;
// check if it is an IEEE 802.11 standard conform
// wireless device by sending SIOCGIWESSID
// which also gives back the Extended Service Set ID
// (see IEEE 802.11 for more information)
const char* iname = interface.latin1();
strcpy( iwr.ifr_ifrn.ifrn_name, (const char *)iname );
if ( 0 == ioctl( fd, SIOCGIWESSID, &iwr ) )
hasWirelessExtensions = true;
else
hasWirelessExtensions = false;
}
/**
* @return QString the station name of the access point.
*/
QString WExtensions::station(){
if(!hasWirelessExtensions)
return QString();
const char* buffer[200];
iwr.u.data.pointer = (caddr_t) buffer;
iwr.u.data.length = IW_ESSID_MAX_SIZE;
iwr.u.data.flags = 0;
if ( 0 == ioctl( fd, SIOCGIWNICKN, &iwr )){
iwr.u.data.pointer[(unsigned int) iwr.u.data.length-1] = '\0';
return QString(iwr.u.data.pointer);
}
return QString();
}
/**
* @return QString the essid of the host 802.11 access point.
*/
QString WExtensions::essid(){
if(!hasWirelessExtensions)
return QString();
if ( 0 == ioctl( fd, SIOCGIWESSID, &iwr )){
iwr.u.essid.pointer[(unsigned int) iwr.u.essid.length-1] = '\0';
return QString(iwr.u.essid.pointer);
}
return QString();
}
/**
* @return QString the mode of interface
*/
QString WExtensions::mode(){
if(!hasWirelessExtensions)
return QString();
if ( 0 == ioctl( fd, SIOCGIWMODE, &iwr ) )
return QString("%1").arg(iwr.u.mode == IW_MODE_ADHOC ? "Ad-Hoc" : "Managed");
return QString();
}
/**
* Get the frequency that the interface is running at.
* @return int the frequency that the interfacae is running at.
*/
double WExtensions::frequency(){
if(!hasWirelessExtensions)
return 0;
if ( 0 == ioctl( fd, SIOCGIWFREQ, &iwr ))
return (double( iwr.u.freq.m ) * pow( 10, iwr.u.freq.e ) / 1000000000);
return 0;;
}
/**
* @return QString the AccessPoint that the interface is connected to.
*/
QString WExtensions::ap(){
if(!hasWirelessExtensions)
return QString();
if ( 0 == ioctl( fd, SIOCGIWAP, &iwr )){
QString ap;
ap = ap.sprintf( "%.2X:%.2X:%.2X:%.2X:%.2X:%.2X",
iwr.u.ap_addr.sa_data[0]&0xff,
iwr.u.ap_addr.sa_data[1]&0xff,
iwr.u.ap_addr.sa_data[2]&0xff,
iwr.u.ap_addr.sa_data[3]&0xff,
iwr.u.ap_addr.sa_data[4]&0xff,
iwr.u.ap_addr.sa_data[5]&0xff );
return ap;
}
else return QString();
}
bool WExtensions::stats(int &signal, int &noise, int &quality){
// gather link quality from /proc/net/wireless
if(!QFile::exists(PROCNETWIRELESS))
return false;
char c;
QString status;
QString name;
QFile wfile( PROCNETWIRELESS );
if(!wfile.open( IO_ReadOnly ))
return false;
QTextStream wstream( &wfile );
wstream.readLine(); // skip the first two lines
wstream.readLine(); // because they only contain headers
while(!wstream.atEnd()){
wstream >> name >> status >> quality >> c >> signal >> c >> noise;
if(name == interface){
if ( quality > 92 )
#ifdef MDEBUG
qDebug( "WIFIAPPLET: D'oh! Quality %d > estimated max!\n", quality );
#endif
if ( ( signal > IW_UPPER ) || ( signal < IW_LOWER ) )
#ifdef MDEBUG
qDebug( "WIFIAPPLET: Doh! Strength %d > estimated max!\n", signal );
#endif
if ( ( noise > IW_UPPER ) || ( noise < IW_LOWER ) )
#ifdef MDEBUG
qDebug( "WIFIAPPLET: Doh! Noise %d > estimated max!\n", noise );
#endif
return true;
}
}
qDebug("Card no longer present");
quality = -1;
signal = IW_LOWER;
noise = IW_LOWER;
return false;
}
// wextensions.cpp
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