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Diffstat (limited to 'wifi/kwireless/linuxwirelesswidget.cpp')
| -rw-r--r-- | wifi/kwireless/linuxwirelesswidget.cpp | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/wifi/kwireless/linuxwirelesswidget.cpp b/wifi/kwireless/linuxwirelesswidget.cpp new file mode 100644 index 00000000..de35b84b --- /dev/null +++ b/wifi/kwireless/linuxwirelesswidget.cpp @@ -0,0 +1,227 @@ +/* + $ 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" |