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924 lines
24 KiB
924 lines
24 KiB
//===========================================================================
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//
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// This file is part of the TDE project
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//
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// Copyright (c) 1999 Martin R. Jones <mjones@kde.org>
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// Copyright (c) 2012 Timothy Pearson <kb9vqf@pearsoncomputing.net>
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//
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#include <config.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <kstandarddirs.h>
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#include <tdeapplication.h>
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#include <kservicegroup.h>
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#include <ksimpleconfig.h>
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#include <kdebug.h>
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#include <tdelocale.h>
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#include <tqfile.h>
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#include <tqtimer.h>
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#include <tqeventloop.h>
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#include <dcopclient.h>
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#include <assert.h>
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#include <dmctl.h>
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#include <dbus/dbus-shared.h>
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#include <tqdbusdata.h>
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#include <tqdbuserror.h>
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#include <tqdbusmessage.h>
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#include <tqdbusobjectpath.h>
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#include <tqdbusproxy.h>
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#include "lockeng.h"
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#include "lockeng.moc"
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#include "kdesktopsettings.h"
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#define SYSTEMD_LOGIN1_SERVICE "org.freedesktop.login1"
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#define SYSTEMD_LOGIN1_PATH "/org/freedesktop/login1"
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#define SYSTEMD_LOGIN1_MANAGER_IFACE "org.freedesktop.login1.Manager"
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#define SYSTEMD_LOGIN1_SESSION_IFACE "org.freedesktop.login1.Session"
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#define SYSTEMD_LOGIN1_SEAT_IFACE "org.freedesktop.login1.Seat"
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#define DBUS_CONN_NAME "kdesktop_lock"
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#include "xautolock_c.h"
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extern xautolock_corner_t xautolock_corners[ 4 ];
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bool trinity_lockeng_sak_available = TRUE;
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SaverEngine* m_masterSaverEngine = NULL;
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static void sigusr1_handler(int)
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{
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if (m_masterSaverEngine) {
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m_masterSaverEngine->m_threadHelperObject->slotLockProcessWaiting();
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}
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}
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static void sigusr2_handler(int)
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{
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if (m_masterSaverEngine) {
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m_masterSaverEngine->m_threadHelperObject->slotLockProcessFullyActivated();
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}
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}
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static void sigttin_handler(int)
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{
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if (m_masterSaverEngine) {
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m_masterSaverEngine->slotLockProcessReady();
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}
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}
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//===========================================================================
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//
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// Screen saver engine. Doesn't handle the actual screensaver window,
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// starting screensaver hacks, or password entry. That's done by
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// a newly started process.
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//
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SaverEngine::SaverEngine()
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: TQWidget(),
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KScreensaverIface(),
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mBlankOnly(false),
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mSAKProcess(NULL),
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mTerminationRequested(false),
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mSaverProcessReady(false),
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mNewVTAfterLockEngage(false),
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mSwitchVTAfterLockEngage(-1),
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dBusLocal(0),
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dBusWatch(0),
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systemdSession(0)
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{
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// handle SIGUSR1
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m_masterSaverEngine = this;
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mSignalAction.sa_handler= sigusr1_handler;
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sigemptyset(&(mSignalAction.sa_mask));
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sigaddset(&(mSignalAction.sa_mask), SIGUSR1);
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mSignalAction.sa_flags = 0;
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sigaction(SIGUSR1, &mSignalAction, 0L);
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// handle SIGUSR2
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m_masterSaverEngine = this;
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mSignalAction.sa_handler= sigusr2_handler;
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sigemptyset(&(mSignalAction.sa_mask));
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sigaddset(&(mSignalAction.sa_mask), SIGUSR2);
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mSignalAction.sa_flags = 0;
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sigaction(SIGUSR2, &mSignalAction, 0L);
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// handle SIGTTIN
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m_masterSaverEngine = this;
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mSignalAction.sa_handler= sigttin_handler;
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sigemptyset(&(mSignalAction.sa_mask));
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sigaddset(&(mSignalAction.sa_mask), SIGTTIN);
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mSignalAction.sa_flags = 0;
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sigaction(SIGTTIN, &mSignalAction, 0L);
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// Save X screensaver parameters
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XGetScreenSaver(tqt_xdisplay(), &mXTimeout, &mXInterval,
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&mXBlanking, &mXExposures);
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mState = Waiting;
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mXAutoLock = 0;
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mEnabled = false;
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m_helperThread = new TQEventLoopThread;
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m_helperThread->start();
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m_threadHelperObject = new SaverEngineThreadHelperObject;
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m_threadHelperObject->moveToThread(m_helperThread);
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connect(this, TQT_SIGNAL(terminateHelperThread()), m_threadHelperObject, TQT_SLOT(terminateThread()));
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connect(m_threadHelperObject, TQT_SIGNAL(lockProcessWaiting()), this, TQT_SLOT(lockProcessWaiting()));
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connect(m_threadHelperObject, TQT_SIGNAL(lockProcessFullyActivated()), this, TQT_SLOT(lockProcessFullyActivated()));
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connect(&mLockProcess, TQT_SIGNAL(processExited(TDEProcess *)),
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TQT_SLOT(lockProcessExited()));
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configure();
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// Create SAK process only if SAK is enabled
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KSimpleConfig *config;
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struct stat st;
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if (stat( KDE_CONFDIR "/tdm/tdmdistrc" , &st) == 0) {
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config = new KSimpleConfig( TQString::fromLatin1( KDE_CONFDIR "/tdm/tdmdistrc" ));
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}
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else {
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config = new KSimpleConfig( TQString::fromLatin1( KDE_CONFDIR "/tdm/tdmrc" ));
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}
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config->setGroup("X-:*-Greeter");
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bool useSAKProcess = false;
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#ifdef BUILD_TSAK
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useSAKProcess = config->readBoolEntry("UseSAK", false) && KDesktopSettings::useTDESAK();
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#endif
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if (useSAKProcess) {
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mSAKProcess = new TDEProcess;
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*mSAKProcess << "tdmtsak";
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connect(mSAKProcess, TQT_SIGNAL(processExited(TDEProcess*)), this, TQT_SLOT(slotSAKProcessExited()));
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TQTimer::singleShot( 0, this, TQT_SLOT(handleSecureDialog()) );
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}
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mLockProcess.clearArguments();
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TQString path = TDEStandardDirs::findExe( "kdesktop_lock" );
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if( path.isEmpty())
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{
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kdDebug( 1204 ) << "Can't find kdesktop_lock!" << endl;
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}
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mLockProcess << path;
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mLockProcess << TQString( "--internal" ) << TQString( "%1" ).arg(getpid());
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if (mLockProcess.start() == false )
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{
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kdDebug( 1204 ) << "Failed to start kdesktop_lock!" << endl;
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}
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// Prevent kdesktop_lock signals from being handled by the wrong (GUI) thread
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sigemptyset(&mThreadBlockSet);
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sigaddset(&mThreadBlockSet, SIGUSR1);
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sigaddset(&mThreadBlockSet, SIGUSR2);
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sigaddset(&mThreadBlockSet, SIGTTIN);
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pthread_sigmask(SIG_BLOCK, &mThreadBlockSet, NULL);
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// Wait for the saver process to signal ready...
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if (!waitForLockProcessStart()) {
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kdDebug( 1204 ) << "Failed to initialize kdesktop_lock (unexpected termination)!" << endl;
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}
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// lock the desktop if required
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config->setGroup("X-:0-Core");
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bool autoLoginEnable = config->readBoolEntry("AutoLoginEnable", false);
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bool autoLoginLocked = config->readBoolEntry("AutoLoginLocked", false);
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if (autoLoginEnable && autoLoginLocked) {
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mLockProcess.kill(SIGTTOU);
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mLockProcess.kill(SIGUSR1);
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}
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delete config;
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config = NULL;
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dBusConnect();
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}
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//---------------------------------------------------------------------------
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//
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// Destructor - usual cleanups.
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//
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SaverEngine::~SaverEngine()
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{
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if (mState == Waiting) {
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kill(mLockProcess.pid(), SIGKILL);
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}
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mLockProcess.detach(); // don't kill it if we crash
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delete mXAutoLock;
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dBusClose();
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// Restore X screensaver parameters
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XSetScreenSaver(tqt_xdisplay(), mXTimeout, mXInterval, mXBlanking,
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mXExposures);
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terminateHelperThread();
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m_helperThread->wait();
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delete m_threadHelperObject;
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delete m_helperThread;
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}
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//---------------------------------------------------------------------------
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//
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// This should be called only using DCOP.
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//
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void SaverEngine::lock()
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{
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lockScreen(true);
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}
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//---------------------------------------------------------------------------
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//
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// Lock the screen
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//
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void SaverEngine::lockScreen(bool DCOP)
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{
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bool ok = true;
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if (mState == Waiting)
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{
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ok = startLockProcess( ForceLock );
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// It takes a while for kdesktop_lock to start and lock the screen.
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// Therefore delay the DCOP call until it tells kdesktop that the locking is in effect.
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// This is done only for --forcelock .
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if( ok && mState != Saving )
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{
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if (DCOP) {
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DCOPClientTransaction* trans = kapp->dcopClient()->beginTransaction();
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if (trans) {
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mLockTransactions.append( trans );
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}
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}
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}
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}
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else
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{
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mLockProcess.kill( SIGHUP );
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}
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}
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void SaverEngine::processLockTransactions()
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{
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for( TQValueVector< DCOPClientTransaction* >::ConstIterator it = mLockTransactions.begin();
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it != mLockTransactions.end();
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++it )
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{
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TQCString replyType = "void";
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TQByteArray arr;
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kapp->dcopClient()->endTransaction( *it, replyType, arr );
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}
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mLockTransactions.clear();
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}
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void SaverEngine::saverLockReady()
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{
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if( mState != Engaging )
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{
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kdDebug( 1204 ) << "Got unexpected saverReady()" << endl;
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}
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kdDebug( 1204 ) << "Saver Lock Ready" << endl;
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processLockTransactions();
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}
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//---------------------------------------------------------------------------
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void SaverEngine::save()
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{
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if (mState == Waiting)
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{
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startLockProcess( DefaultLock );
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}
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}
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//---------------------------------------------------------------------------
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void SaverEngine::quit()
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{
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if (mState == Saving || mState == Engaging)
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{
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stopLockProcess();
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}
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}
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//---------------------------------------------------------------------------
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bool SaverEngine::isEnabled()
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{
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return mEnabled;
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}
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//---------------------------------------------------------------------------
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bool SaverEngine::enable( bool e )
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{
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if ( e == mEnabled )
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return true;
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// If we aren't in a suitable state, we will not reconfigure.
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if (mState != Waiting)
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return false;
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mEnabled = e;
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if (mEnabled)
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{
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if ( !mXAutoLock ) {
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mXAutoLock = new XAutoLock();
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connect(mXAutoLock, TQT_SIGNAL(timeout()), TQT_SLOT(idleTimeout()));
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}
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mXAutoLock->setTimeout(mTimeout);
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mXAutoLock->setDPMS(true);
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//mXAutoLock->changeCornerLockStatus( mLockCornerTopLeft, mLockCornerTopRight, mLockCornerBottomLeft, mLockCornerBottomRight);
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// We'll handle blanking
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XSetScreenSaver(tqt_xdisplay(), mTimeout + 10, mXInterval, PreferBlanking, mXExposures);
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kdDebug() << "XSetScreenSaver " << mTimeout + 10 << endl;
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mXAutoLock->start();
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kdDebug(1204) << "Saver Engine started, timeout: " << mTimeout << endl;
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}
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else
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{
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if (mXAutoLock)
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{
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delete mXAutoLock;
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mXAutoLock = 0;
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}
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XForceScreenSaver(tqt_xdisplay(), ScreenSaverReset );
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XSetScreenSaver(tqt_xdisplay(), 0, mXInterval, PreferBlanking, DontAllowExposures);
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kdDebug(1204) << "Saver Engine disabled" << endl;
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}
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return true;
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}
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//---------------------------------------------------------------------------
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bool SaverEngine::isBlanked()
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{
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return (mState != Waiting);
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}
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void SaverEngine::enableExports()
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{
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#ifdef Q_WS_X11
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kdDebug(270) << k_lineinfo << "activating background exports.\n";
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DCOPClient *client = kapp->dcopClient();
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if (!client->isAttached()) {
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client->attach();
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}
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TQByteArray data;
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TQDataStream args( data, IO_WriteOnly );
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args << 1;
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TQCString appname( "kdesktop" );
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int screen_number = DefaultScreen(tqt_xdisplay());
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if ( screen_number ) {
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appname.sprintf("kdesktop-screen-%d", screen_number );
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}
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client->send( appname, "KBackgroundIface", "setExport(int)", data );
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#endif
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}
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//---------------------------------------------------------------------------
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void SaverEngine::handleSecureDialog()
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{
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// Wait for SAK press
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if (mSAKProcess && !mSAKProcess->isRunning()) {
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mSAKProcess->start();
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}
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}
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void SaverEngine::slotSAKProcessExited()
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{
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if (!mSAKProcess) {
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printf("[kdesktop] SAK process does not exist. Something went wrong. Ignoring...\n"); fflush(stdout);
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return;
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}
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int retcode = mSAKProcess->exitStatus();
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if ((retcode != 0) && (mSAKProcess->normalExit())) {
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trinity_lockeng_sak_available = FALSE;
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printf("[kdesktop] SAK driven secure dialog is not available for use (retcode %d). Check tdmtsak for proper functionality.\n", retcode); fflush(stdout);
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}
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if (mState == Preparing) {
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return;
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}
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if ((mSAKProcess->normalExit()) && (trinity_lockeng_sak_available == TRUE)) {
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bool ok = true;
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if (mState == Waiting)
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{
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ok = startLockProcess( SecureDialog );
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if( ok && mState != Saving )
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{
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}
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}
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else
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{
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mLockProcess.kill( SIGHUP );
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}
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}
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}
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//---------------------------------------------------------------------------
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//
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// Read and apply configuration.
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//
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void SaverEngine::configure()
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{
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// If we aren't in a suitable state, we will not reconfigure.
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if (mState != Waiting) {
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return;
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}
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// create a new config obj to ensure we read the latest options
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KDesktopSettings::self()->readConfig();
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bool e = KDesktopSettings::screenSaverEnabled();
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mTimeout = KDesktopSettings::timeout();
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mEnabled = !e; // force the enable()
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int action;
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action = KDesktopSettings::actionTopLeft();
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xautolock_corners[0] = applyManualSettings(action);
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action = KDesktopSettings::actionTopRight();
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xautolock_corners[1] = applyManualSettings(action);
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action = KDesktopSettings::actionBottomLeft();
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xautolock_corners[2] = applyManualSettings(action);
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action = KDesktopSettings::actionBottomRight();
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xautolock_corners[3] = applyManualSettings(action);
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enable( e );
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}
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//---------------------------------------------------------------------------
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//
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// Set a variable to indicate only using the blanker and not the saver.
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//
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void SaverEngine::setBlankOnly( bool blankOnly )
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{
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mBlankOnly = blankOnly;
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// FIXME: if running, stop and restart? What about security
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// implications of this?
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}
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bool SaverEngine::restartDesktopLockProcess()
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{
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if (!mLockProcess.isRunning()) {
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mSaverProcessReady = false;
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mLockProcess.clearArguments();
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TQString path = TDEStandardDirs::findExe( "kdesktop_lock" );
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if (path.isEmpty()) {
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kdDebug( 1204 ) << "Can't find kdesktop_lock!" << endl;
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return false;
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}
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mLockProcess << path;
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mLockProcess << TQString( "--internal" ) << TQString( "%1" ).arg(getpid());
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if (mLockProcess.start() == false) {
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kdDebug( 1204 ) << "Failed to start kdesktop_lock!" << endl;
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return false;
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}
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// Wait for the saver process to signal ready...
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if (!waitForLockProcessStart()) {
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kdDebug( 1204 ) << "Failed to initialize kdesktop_lock (unexpected termination)!" << endl;
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return false;
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}
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}
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return true;
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}
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//---------------------------------------------------------------------------
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//
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// Start the screen saver.
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//
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bool SaverEngine::startLockProcess( LockType lock_type )
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{
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int ret;
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if (mState == Saving) {
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return true;
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}
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mState = Preparing;
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if (mSAKProcess) {
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mSAKProcess->kill(SIGTERM);
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}
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enableExports();
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kdDebug(1204) << "SaverEngine: starting saver" << endl;
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emitDCOPSignal("KDE_start_screensaver()", TQByteArray());
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if (!restartDesktopLockProcess()) {
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mState = Waiting;
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return false;
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}
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switch( lock_type )
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{
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case ForceLock:
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mLockProcess.kill(SIGUSR1); // Request forcelock
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break;
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case DontLock:
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mLockProcess.kill(SIGUSR2); // Request dontlock
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break;
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case SecureDialog:
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mLockProcess.kill(SIGWINCH); // Request secure dialog
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break;
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default:
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break;
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}
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if (mBlankOnly) {
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mLockProcess.kill(SIGTTIN); // Request blanking
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}
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ret = mLockProcess.kill(SIGTTOU); // Start lock
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if (!ret) {
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mState = Waiting;
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return false;
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}
|
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XSetScreenSaver(tqt_xdisplay(), 0, mXInterval, PreferBlanking, mXExposures);
|
|
|
|
mState = Engaging;
|
|
if (mXAutoLock) {
|
|
mXAutoLock->stop();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
//
|
|
// Stop the screen saver.
|
|
//
|
|
void SaverEngine::stopLockProcess()
|
|
{
|
|
if (mState == Waiting) {
|
|
kdWarning(1204) << "SaverEngine::stopSaver() saver not active" << endl;
|
|
return;
|
|
}
|
|
kdDebug(1204) << "SaverEngine: stopping lock" << endl;
|
|
emitDCOPSignal("KDE_stop_screensaver()", TQByteArray());
|
|
|
|
mTerminationRequested = true;
|
|
mLockProcess.kill();
|
|
|
|
if (mEnabled) {
|
|
if (mXAutoLock) {
|
|
mXAutoLock->start();
|
|
}
|
|
XForceScreenSaver(tqt_xdisplay(), ScreenSaverReset );
|
|
XSetScreenSaver(tqt_xdisplay(), mTimeout + 10, mXInterval, PreferBlanking, mXExposures);
|
|
}
|
|
processLockTransactions();
|
|
mState = Waiting;
|
|
|
|
if( systemdSession && systemdSession->canSend() ) {
|
|
TQValueList<TQT_DBusData> params;
|
|
params << TQT_DBusData::fromBool(false);
|
|
TQT_DBusMessage reply = systemdSession->sendWithReply("SetIdleHint", params);
|
|
}
|
|
}
|
|
|
|
void SaverEngine::recoverFromHackingAttempt()
|
|
{
|
|
// Try to relaunch saver with forcelock
|
|
if (!startLockProcess(ForceLock)) {
|
|
// Terminate the TDE session ASAP!
|
|
// Values are explained at http://lists.kde.org/?l=kde-linux&m=115770988603387
|
|
TQByteArray data;
|
|
TQDataStream arg(data, IO_WriteOnly);
|
|
arg << (int)0 << (int)0 << (int)2;
|
|
if (!kapp->dcopClient()->send("ksmserver", "default", "logout(int,int,int)", data)) {
|
|
// Someone got to DCOP before we did
|
|
// Try an emergency system logout
|
|
system("logout");
|
|
}
|
|
}
|
|
}
|
|
|
|
void SaverEngine::lockProcessExited()
|
|
{
|
|
bool abnormalExit = false;
|
|
if (mLockProcess.normalExit() == false) {
|
|
abnormalExit = true;
|
|
}
|
|
else {
|
|
if (mLockProcess.exitStatus() != 0) {
|
|
abnormalExit = true;
|
|
}
|
|
}
|
|
if (mTerminationRequested == true) {
|
|
abnormalExit = false;
|
|
mTerminationRequested = false;
|
|
}
|
|
if (abnormalExit == true) {
|
|
// PROBABLE HACKING ATTEMPT DETECTED
|
|
restartDesktopLockProcess();
|
|
mState = Waiting;
|
|
TQTimer::singleShot( 100, this, SLOT(recoverFromHackingAttempt()) );
|
|
}
|
|
else {
|
|
// Restart the lock process
|
|
restartDesktopLockProcess();
|
|
}
|
|
}
|
|
|
|
void SaverEngineThreadHelperObject::slotLockProcessWaiting()
|
|
{
|
|
// lockProcessWaiting cannot be called directly from a signal handler, as it will hang in certain obscure circumstances
|
|
// Instead we use a single-shot timer to immediately call lockProcessWaiting once control has returned to the Qt main loop
|
|
lockProcessWaiting();
|
|
}
|
|
|
|
void SaverEngineThreadHelperObject::slotLockProcessFullyActivated()
|
|
{
|
|
lockProcessFullyActivated();
|
|
}
|
|
|
|
void SaverEngine::lockProcessFullyActivated()
|
|
{
|
|
mState = Saving;
|
|
|
|
if( systemdSession && systemdSession->canSend() ) {
|
|
TQValueList<TQT_DBusData> params;
|
|
params << TQT_DBusData::fromBool(true);
|
|
TQT_DBusMessage reply = systemdSession->sendWithReply("SetIdleHint", params);
|
|
}
|
|
|
|
if (mNewVTAfterLockEngage) {
|
|
DM().startReserve();
|
|
mNewVTAfterLockEngage = false;
|
|
}
|
|
else if (mSwitchVTAfterLockEngage != -1) {
|
|
DM().switchVT(mSwitchVTAfterLockEngage);
|
|
mSwitchVTAfterLockEngage = -1;
|
|
}
|
|
}
|
|
|
|
void SaverEngine::slotLockProcessReady()
|
|
{
|
|
mSaverProcessReady = true;
|
|
}
|
|
|
|
void SaverEngine::lockProcessWaiting()
|
|
{
|
|
kdDebug(1204) << "SaverEngine: lock exited" << endl;
|
|
if (trinity_lockeng_sak_available == TRUE) {
|
|
handleSecureDialog();
|
|
}
|
|
if( mState == Waiting ) {
|
|
return;
|
|
}
|
|
emitDCOPSignal("KDE_stop_screensaver()", TQByteArray());
|
|
if (mEnabled) {
|
|
if (mXAutoLock) {
|
|
mXAutoLock->start();
|
|
}
|
|
XForceScreenSaver(tqt_xdisplay(), ScreenSaverReset );
|
|
XSetScreenSaver(tqt_xdisplay(), mTimeout + 10, mXInterval, PreferBlanking, mXExposures);
|
|
}
|
|
processLockTransactions();
|
|
mState = Waiting;
|
|
|
|
if( systemdSession && systemdSession->canSend() ) {
|
|
TQValueList<TQT_DBusData> params;
|
|
params << TQT_DBusData::fromBool(false);
|
|
TQT_DBusMessage reply = systemdSession->sendWithReply("SetIdleHint", params);
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
//
|
|
// XAutoLock has detected the required idle time.
|
|
//
|
|
void SaverEngine::idleTimeout()
|
|
{
|
|
// disable X screensaver
|
|
XForceScreenSaver(tqt_xdisplay(), ScreenSaverReset );
|
|
XSetScreenSaver(tqt_xdisplay(), 0, mXInterval, PreferBlanking, DontAllowExposures);
|
|
startLockProcess( DefaultLock );
|
|
}
|
|
|
|
xautolock_corner_t SaverEngine::applyManualSettings(int action)
|
|
{
|
|
if (action == 0) {
|
|
kdDebug() << "no lock" << endl;
|
|
return ca_nothing;
|
|
}
|
|
else if (action == 1) {
|
|
kdDebug() << "lock screen" << endl;
|
|
return ca_forceLock;
|
|
}
|
|
else if (action == 2) {
|
|
kdDebug() << "prevent lock" << endl;
|
|
return ca_dontLock;
|
|
}
|
|
else{
|
|
kdDebug() << "no lock nothing" << endl;
|
|
return ca_nothing;
|
|
}
|
|
}
|
|
|
|
/*!
|
|
* This function try a reconnect to D-Bus.
|
|
* \return boolean with the result of the operation
|
|
* \retval true if successful reconnected to D-Bus
|
|
* \retval false if unsuccessful
|
|
*/
|
|
bool SaverEngine::dBusReconnect() {
|
|
// close D-Bus connection
|
|
dBusClose();
|
|
// init D-Bus conntection
|
|
return (dBusConnect());
|
|
}
|
|
|
|
/*!
|
|
* This function is used to close D-Bus connection.
|
|
*/
|
|
void SaverEngine::dBusClose() {
|
|
if( dBusConn.isConnected() ) {
|
|
if( dBusLocal ) {
|
|
delete dBusLocal;
|
|
dBusLocal = 0;
|
|
}
|
|
if( dBusWatch ) {
|
|
delete dBusWatch;
|
|
dBusWatch = 0;
|
|
}
|
|
if( systemdSession ) {
|
|
delete systemdSession;
|
|
systemdSession = 0;
|
|
}
|
|
}
|
|
dBusConn.closeConnection(DBUS_CONN_NAME);
|
|
}
|
|
|
|
/*!
|
|
* This function is used to connect to D-Bus.
|
|
*/
|
|
bool SaverEngine::dBusConnect() {
|
|
dBusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus, DBUS_CONN_NAME);
|
|
if( !dBusConn.isConnected() ) {
|
|
kdError() << "Failed to open connection to system message bus: " << dBusConn.lastError().message() << endl;
|
|
TQTimer::singleShot(4000, this, TQT_SLOT(dBusReconnect()));
|
|
return false;
|
|
}
|
|
|
|
// watcher for Disconnect signal
|
|
dBusLocal = new TQT_DBusProxy(DBUS_SERVICE_DBUS, DBUS_PATH_LOCAL, DBUS_INTERFACE_LOCAL, dBusConn);
|
|
TQObject::connect(dBusLocal, TQT_SIGNAL(dbusSignal(const TQT_DBusMessage&)),
|
|
this, TQT_SLOT(handleDBusSignal(const TQT_DBusMessage&)));
|
|
|
|
// watcher for NameOwnerChanged signals
|
|
dBusWatch = new TQT_DBusProxy(DBUS_SERVICE_DBUS, DBUS_PATH_DBUS, DBUS_INTERFACE_DBUS, dBusConn);
|
|
TQObject::connect(dBusWatch, TQT_SIGNAL(dbusSignal(const TQT_DBusMessage&)),
|
|
this, TQT_SLOT(handleDBusSignal(const TQT_DBusMessage&)));
|
|
|
|
// find already running SystemD
|
|
TQT_DBusProxy checkSystemD(DBUS_SERVICE_DBUS, DBUS_PATH_DBUS, DBUS_INTERFACE_DBUS, dBusConn);
|
|
if( checkSystemD.canSend() ) {
|
|
TQValueList<TQT_DBusData> params;
|
|
params << TQT_DBusData::fromString(SYSTEMD_LOGIN1_SERVICE);
|
|
TQT_DBusMessage reply = checkSystemD.sendWithReply("NameHasOwner", params);
|
|
if (reply.type() == TQT_DBusMessage::ReplyMessage && reply.count() == 1 && reply[0].toBool() ) {
|
|
onDBusServiceRegistered(SYSTEMD_LOGIN1_SERVICE);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/*!
|
|
* This function handles D-Bus service registering
|
|
*/
|
|
void SaverEngine::onDBusServiceRegistered(const TQString& service) {
|
|
if( service == SYSTEMD_LOGIN1_SERVICE ) {
|
|
// get current systemd session
|
|
TQT_DBusProxy managerIface(SYSTEMD_LOGIN1_SERVICE, SYSTEMD_LOGIN1_PATH, SYSTEMD_LOGIN1_MANAGER_IFACE, dBusConn);
|
|
TQT_DBusObjectPath systemdSessionPath = TQT_DBusObjectPath();
|
|
if( managerIface.canSend() ) {
|
|
TQValueList<TQT_DBusData> params;
|
|
params << TQT_DBusData::fromUInt32( getpid() );
|
|
TQT_DBusMessage reply = managerIface.sendWithReply("GetSessionByPID", params);
|
|
if (reply.type() == TQT_DBusMessage::ReplyMessage && reply.count() == 1 ) {
|
|
systemdSessionPath = reply[0].toObjectPath();
|
|
}
|
|
}
|
|
// wather for systemd session signals
|
|
if( systemdSessionPath.isValid() ) {
|
|
systemdSession = new TQT_DBusProxy(SYSTEMD_LOGIN1_SERVICE, systemdSessionPath, SYSTEMD_LOGIN1_SESSION_IFACE, dBusConn);
|
|
TQObject::connect(systemdSession, TQT_SIGNAL(dbusSignal(const TQT_DBusMessage&)),
|
|
this, TQT_SLOT(handleDBusSignal(const TQT_DBusMessage&)));
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*!
|
|
* This function handles D-Bus service unregistering
|
|
*/
|
|
void SaverEngine::onDBusServiceUnregistered(const TQString& service) {
|
|
if( service == SYSTEMD_LOGIN1_SERVICE ) {
|
|
if( systemdSession ) {
|
|
delete systemdSession;
|
|
systemdSession = 0;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*!
|
|
* This function handles signals from the D-Bus daemon.
|
|
*/
|
|
void SaverEngine::handleDBusSignal(const TQT_DBusMessage& msg) {
|
|
// dbus terminated
|
|
if( msg.path() == DBUS_PATH_LOCAL
|
|
&& msg.interface() == DBUS_INTERFACE_LOCAL
|
|
&& msg.member() == "Disconnected" ) {
|
|
dBusClose();
|
|
TQTimer::singleShot(1000, this, TQT_SLOT(dBusReconnect()));
|
|
return;
|
|
}
|
|
|
|
// service registered / unregistered
|
|
if( msg.path() == DBUS_PATH_DBUS
|
|
&& msg.interface() == DBUS_INTERFACE_DBUS
|
|
&& msg.member() == "NameOwnerChanged" ) {
|
|
if( msg[1].toString().isEmpty() ) {
|
|
// old-owner is empty
|
|
onDBusServiceRegistered(msg[0].toString());
|
|
}
|
|
if( msg[2].toString().isEmpty() ) {
|
|
// new-owner is empty
|
|
onDBusServiceUnregistered(msg[0].toString());
|
|
}
|
|
return;
|
|
}
|
|
|
|
// systemd signal Lock()
|
|
if( systemdSession && systemdSession->canSend()
|
|
&& msg.path() == systemdSession->path()
|
|
&& msg.interface() == SYSTEMD_LOGIN1_SESSION_IFACE
|
|
&& msg.member() == "Lock") {
|
|
lockScreen();
|
|
return;
|
|
}
|
|
|
|
// systemd signal Unlock()
|
|
if( systemdSession && systemdSession->canSend()
|
|
&& msg.path() == systemdSession->path()
|
|
&& msg.interface() == SYSTEMD_LOGIN1_SESSION_IFACE
|
|
&& msg.member() == "Unlock") {
|
|
// unlock?
|
|
return;
|
|
}
|
|
}
|
|
|
|
bool SaverEngine::waitForLockProcessStart() {
|
|
sigset_t new_mask;
|
|
sigset_t empty_mask;
|
|
sigemptyset(&empty_mask);
|
|
|
|
// ensure that SIGCHLD is not subject to a race condition
|
|
sigemptyset(&new_mask);
|
|
sigaddset(&new_mask, SIGCHLD);
|
|
|
|
pthread_sigmask(SIG_BLOCK, &new_mask, NULL);
|
|
while ((mLockProcess.isRunning()) && (!mSaverProcessReady)) {
|
|
// wait for any signal(s) to arrive
|
|
sigsuspend(&empty_mask);
|
|
}
|
|
pthread_sigmask(SIG_UNBLOCK, &new_mask, NULL);
|
|
|
|
return mLockProcess.isRunning();
|
|
}
|
|
|
|
bool SaverEngine::waitForLockEngage() {
|
|
sigset_t empty_mask;
|
|
sigemptyset(&empty_mask);
|
|
|
|
// wait for SIGUSR1, SIGUSR2, SIGTTIN
|
|
while ((mLockProcess.isRunning()) && (mState != Waiting) && (mState != Saving)) {
|
|
// wait for any signal(s) to arrive
|
|
sigsuspend(&empty_mask);
|
|
}
|
|
|
|
return mLockProcess.isRunning();
|
|
}
|
|
|
|
void SaverEngine::lockScreenAndDoNewSession() {
|
|
mNewVTAfterLockEngage = true;
|
|
lockScreen();
|
|
}
|
|
|
|
void SaverEngine::lockScreenAndSwitchSession(int vt) {
|
|
mSwitchVTAfterLockEngage = vt;
|
|
lockScreen();
|
|
}
|
|
|
|
void SaverEngineThreadHelperObject::terminateThread() {
|
|
TQEventLoop* eventLoop = TQApplication::eventLoop();
|
|
if (eventLoop) {
|
|
eventLoop->exit(0);
|
|
}
|
|
}
|