/**
* If no windows manager is set,
* probe the environment to automatically guess one.
**/
static void checkDesktop()
{
// if no desktop is given, look if one is passed via command line
const char* const pcDesktopSession(::getenv(DESKTOP_SESSION));
if (!pcDesktopSession)
{
// no desktop is set and no desktop is given on the command line.
// most likely we are called via sudo
// try to test for at least very well known running desktop managers
const uint uiUid(effectiveUid());
QFileInfoList procList(QDir(PROCDIR).entryInfoList(QDir::AllDirs|QDir::NoDotAndDotDot));
bool fDone(false);
for (QFileInfoList::const_iterator procIt(procList.constBegin()); !fDone && procIt != procList.constEnd(); procIt++)
{
bool fOk(false);
QString strPid((*procIt).fileName());
strPid.toUInt(&fOk);
if (fOk) // pid must be numeric, ignore every thing else
{
// is this process owned by the user
if (uiUid == (*procIt).ownerId())
{
// we have a valid pid
// open the cmdline file to determine what's the name of the process running
QFile cmdLineFile(PROCDIR + strPid + "/comm");
if (cmdLineFile.open(QFile::ReadOnly))
{
const QString strCli(cmdLineFile.readAll());
if (strCli.startsWith("gnome-session"))
{
fDone = true;
::setenv(DESKTOP_SESSION, "gnome", 0);
}
else if (strCli.startsWith("ksmserver"))
{
fDone = true;
::setenv(DESKTOP_SESSION, "kde", 0);
}
else if (strCli.startsWith("xfce4-session"))
{
fDone = true;
::setenv(DESKTOP_SESSION, "xfce", 0);
}
}
else
qWarning() << "Failed to open proc command line file" << cmdLineFile.fileName();
}
}
}
}
}
bool CheckProcessFile(const std::string& name, const std::string& processName)
{
// Try to cast the filename to an integer number (=PID)
try
{
unsigned long pid = utils::toUint( name );
// Was the PID read correctly?
if (pid == 0)
{
return false;
}
const std::string cmdLineFileName = systemProcFolder + name + "/cmdline";
std::ifstream cmdLineFile(cmdLineFileName.c_str());
if (cmdLineFile.is_open())
{
// Read the command line from the process file
std::string cmdLine;
getline(cmdLineFile, cmdLine);
if (cmdLine.find(processName) != std::string::npos)
{
// Process found, return success
return true;
}
}
// Close the file
cmdLineFile.close();
}
catch( ... )
{
// Cast to int failed, no PID
}
return false;
}
