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/*
$ Author: Mirko Boehm $
$ License: This code is licensed under the LGPL $
$ Copyright: (C) 1996-2003, Mirko Boehm $
$ Contact: Mirko Boehm <mirko@kde.org>
http://www.kde.org
http://www.hackerbuero.org $
*/
#include <qtooltip.h>
#include <qtimer.h>
#include <kdebug.h>
#include <klocale.h>
#include <unistd.h> // for ::close
#include "linuxwirelesswidget.h"
#include "config.h"
extern "C" {
#include <iwlib.h>
// #include <linux/wireless.h>
}
int LinuxWireLessWidget::socketFD;
QStringList LinuxWireLessWidget::deviceNames;
LinuxWireLessWidget::LinuxWireLessWidget(QWidget *parent, const char* name)
: KWireLessWidget(parent, name),
m_number (-1)
{
}
LinuxWireLessWidget::~LinuxWireLessWidget()
{
if(instances() == 1)
{ // I am the only one
if(socketFD != 0)
{
kdDebug() << "KWireLessWidget dtor: closing FD, over and out."
<< endl;
::close(socketFD); // prevent from using QWidget::close
socketFD = 0;
}
}
}
void LinuxWireLessWidget::poll()
{
// BE AWARE: do not call this method, only the first instance is
// supposed to do so, and it has been taken care of!
// this will repoll the device names every ReEnumCountDownStart
// timer ticks:
const int ReEnumCountDownStart = 30;
static int ReEnumCountDown;
struct wireless_info info;
struct wireless_config config;
struct iwreq wrq;
bool updateNeeded = false;
bool updateToolTip = false;
// get a socket file descriptor:
if(socketFD == 0)
{
socketFD = iw_sockets_open();
}
if(socketFD == 0)
{
kdDebug() << "KWireLessWidget ctor: opening socket file descriptor failed."
<< endl;
return;
}
// ----- query the available devices:
mutex.lock(); // querying the device names is protected:
if(ReEnumCountDown-- == 0)
{
ReEnumCountDown = ReEnumCountDownStart;
updateToolTip = true;
// query device information:
deviceNames.clear();
iw_enum_devices(socketFD, devEnumHandler, 0, 0);
if (m_number != (int) deviceNames.count())
{
m_number = deviceNames.count();
kdDebug() << "KWireLessWidget::poll: found "
<< deviceNames.count() << " wireless "
<< ((deviceNames.count() == 1) ? "device" : "devices")
<< endl;
}
}
// ----- get the device information:
QStringList::Iterator it;
deviceInfo.clear();
for(it=deviceNames.begin(); it!=deviceNames.end(); ++it)
{
// I think it is OK to use this cast, since the QT docs say the
// returned pointer is valid until the value of the string is
// changed, which will not happen here (horrible cast, anyway
// ...):
char *device_c_str = (char*)(*it).latin1();
if(iw_get_basic_config(socketFD, device_c_str, &config) == -1)
{
kdDebug() << "KWireLessWidget::poll: device "
<< *it << " does not seem to be a wireless device"
<< endl;
} else {
// WORK_TO_DO: decide whether updates are needed or not
// create a DeviceInfo object and fill it:
QString dev, essid, encr;
float quality=0, signal=0, noise=0;
int bitrate;
dev = *it;
// get the bitrate:
if(iw_get_ext(socketFD, device_c_str, SIOCGIWRATE, &wrq) >=0)
{
info.has_bitrate = 1;
memcpy(&(info.bitrate), &(wrq.u.bitrate), sizeof(iwparam));
}
bitrate = info.bitrate.value;
// get the ranges (needed to translate the absolute values
// reported by the driver):
if(iw_get_range_info(socketFD, device_c_str, &(info.range)) >= 0)
{
info.has_range = 1;
}
// get the device statistics:
#ifdef HAVE_IW_27
if(iw_get_stats(socketFD, device_c_str, &(info.stats), &(info.range), info.has_range)>= 0)
#else
if(iw_get_stats(socketFD, device_c_str, &(info.stats)) >= 0)
#endif
{
info.has_stats = 1;
// get the link quality (logic has been taken from
// wireless-tools, iwlib.c):
int rqn = info.range.max_qual.noise;
int rql = info.range.max_qual.level;
int rmq = info.range.max_qual.qual;
// in case the quality levels are zero, do not allow division by zero, and
// instead set the max. possible quality range to 255 (max of "unsigned char")
if (!rqn) rqn = 255;
if (!rql) rql = 255;
if (!rmq) rmq = 255;
bool isAbs; // true if values are relative tp a peak value,
// otherwise values are dBm
isAbs = (float)info.stats.qual.level > (int)info.range.max_qual.level;
if(isAbs)
{
noise = 1 + ((float)info.stats.qual.noise - 0x100) / rqn;
signal = 1 + ((float)info.stats.qual.level - 0x100) / rql;
} else {
noise = ((float)info.stats.qual.noise) / rqn;
signal = ((float)info.stats.qual.level) / rql;
}
quality = ((float)info.stats.qual.qual) / rmq;
updateNeeded = true;
}
if(config.has_essid)
essid = config.essid;
else
essid = i18n("<unknown>");
if (config.has_key && config.key_size>0) {
encr = i18n("enabled");
} else {
// non-root users don't get information about encryption status
encr = (getuid() == 0) ? i18n("disabled") : i18n("no information");
}
DeviceInfo *device = new DeviceInfo(dev, essid, encr, quality, signal,
noise, bitrate);
deviceInfo.append(device);
}
}
mutex.unlock();
if(updateNeeded)
{
emit(updateDeviceInfo(&deviceInfo));
repaint(false);
}
if(updateToolTip)
{
DeviceInfo *info;
QString text;
for(info=deviceInfo.first(); info; info=deviceInfo.next())
{
if (!text.isEmpty())
text.append('\n');
text += i18n("%1: Link Quality %2, Bitrate: %3")
.arg(info->device())
.arg(info->qualityString())
.arg(info->bitrateString());
}
QToolTip::add(this, text);
updateToolTip = false;
}
timer->start(330, true); // single shot
}
// static:
int LinuxWireLessWidget::devEnumHandler(int skfd, char * ifname, char **, int)
{
struct wireless_config config;
if(iw_get_basic_config(skfd, ifname, &config) != -1)
{
deviceNames.append(ifname);
}
return 0;
}
#include "linuxwirelesswidget.moc"
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