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#include "wextensions.h"
/* OPIE */
#include <opie2/odebug.h>
using namespace Opie::Core;
/* QT */
#include <qfile.h>
#include <qtextstream.h>
/* STD */
#include <arpa/inet.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <math.h>
#define PROCNETWIRELESS "/proc/net/wireless"
#define IW_LOWER 0
#define IW_UPPER 256
#warning This is duplicated code. Use libopienet2!
/**
* Constructor. Sets hasWirelessExtensions
*/
WExtensions::WExtensions(QString interfaceName): hasWirelessExtensions(false), interface(interfaceName) {
fd = socket( AF_INET, SOCK_DGRAM, 0 );
if(fd == -1)
return;
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;
}
/**
* @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 )){
buffer[(unsigned int) iwr.u.data.length-1] = '\0';
return (const char*) buffer;
}
return QString::null;
}
/**
* @return QString the essid of the host 802.11 access point.
*/
QString WExtensions::essid(){
if(!hasWirelessExtensions)
return QString();
const char* buffer[200];
memset(buffer,0x00,200);
iwr.u.data.pointer = (caddr_t) buffer;
iwr.u.data.length = IW_ESSID_MAX_SIZE;
iwr.u.data.flags = 0;
if ( 0 == ioctl( fd, SIOCGIWESSID, &iwr )){
if (iwr.u.essid.length > IW_ESSID_MAX_SIZE)
iwr.u.essid.length = IW_ESSID_MAX_SIZE;
buffer[(unsigned int) iwr.u.essid.length] = '\0';
return (const char*) buffer;
}
return QString::null;
}
/**
* @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;
}
/**
* Get the channel that the interface is running at.
* @return int the channel that the interfacae is running at.
*/
int WExtensions::channel(){
if(!hasWirelessExtensions)
return 0;
if ( 0 != ioctl( fd, SIOCGIWFREQ, &iwr ))
return 0;
// http://www.elanix.com/pdf/an137e.pdf
double num = (double( iwr.u.freq.m ) * pow( 10, iwr.u.freq.e ) / 1000000000);
double left = 2.401;
double right = 2.416;
for(int channel = 1; channel<= 15; channel++){
if( num >= left && num <= right )
return channel;
left += 0.005;
right += 0.005;
}
odebug << QString("Unknown frequency: %1, returning -1 for the channel.").arg(num).latin1() << oendl;
return -1;
}
/***
* Get the current rate that the card is transmiting at.
* @return double the rate, 0 if error.
*/
double WExtensions::rate(){
if(!hasWirelessExtensions)
return 0;
if(0 == ioctl(fd, SIOCGIWRATE, &iwr)){
return ((double)iwr.u.bitrate.value)/1000000;
}
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();
}
/**
* Get the stats for interfaces
* @param signal the signal strength of interface
* @param noise the noise level of the interface
* @param quality the quality level of the interface
* @return bool true if successful
*/
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 == QString("%1:").arg(interface)){
if ( quality > 92 )
odebug << "WIFIAPPLET: D'oh! Quality " << quality << " > estimated max!\n" << oendl;
if ( ( signal > IW_UPPER ) || ( signal < IW_LOWER ) )
odebug << "WIFIAPPLET: Doh! Strength " << signal << " > estimated max!\n" << oendl;
if ( ( noise > IW_UPPER ) || ( noise < IW_LOWER ) )
odebug << "WIFIAPPLET: Doh! Noise " << noise << " > estimated max!\n" << oendl;
//odebug << QString("q:%1, s:%2, n:%3").arg(quality).arg(signal).arg(noise).latin1() << oendl;
signal = ( ( signal-IW_LOWER ) * 100 ) / IW_UPPER;
noise = ( ( noise-IW_LOWER ) * 100 ) / IW_UPPER;
quality = ( quality*100 ) / 92;
return true;
}
}
odebug << "WExtensions::statsCard no longer present." << oendl;
quality = -1;
signal = IW_LOWER;
noise = IW_LOWER;
return false;
}
// wextensions.cpp
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