1 files changed, 10 insertions, 6 deletions

diff --git a/noncore/settings/networksettings/wlan/wextensions.cpp b/noncore/settings/networksettings/wlan/wextensions.cpp
index fe21f02..8a9db66 100644
--- a/noncore/settings/networksettings/wlan/wextensions.cpp
+++ b/noncore/settings/networksettings/wlan/wextensions.cpp
@@ -1,207 +1,211 @@
 #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 )){
-    iwr.u.data.pointer[(unsigned int) iwr.u.data.length-1] = '\0';
-    return QString(iwr.u.data.pointer);
+    buffer[(unsigned int) iwr.u.data.length-1] = '\0';
+    return (const char*) buffer;
   }
-  return QString();
+  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];
+  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 )){
-    iwr.u.essid.pointer[(unsigned int) iwr.u.essid.length] = '\0';
-    return QString(iwr.u.essid.pointer);
+    buffer[(unsigned int) iwr.u.essid.length] = '\0';
+    return (const char*) buffer;
   }
-  return QString();
+  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