//=========================================================================== // // This file is part of the KDE project // // Copyright (c) 1999 Martin R. Jones // Copyright (c) 2003 Oswald Buddenhagen // //kdesktop keeps running and checks user inactivity //when it should show screensaver (and maybe lock the session), //it starts kdesktop_lock, who does all the locking and who //actually starts the screensaver //It's done this way to prevent screen unlocking when kdesktop //crashes (e.g. because it's set to multiple wallpapers and //some image will be corrupted). #include #include "lockprocess.h" #include "lockdlg.h" #include "infodlg.h" #include "querydlg.h" #include "autologout.h" #include "kdesktopsettings.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_SETPRIORITY #include #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_DPMS extern "C" { #include #ifndef Bool #define Bool BOOL #endif #include #ifndef HAVE_DPMSINFO_PROTO Status DPMSInfo ( Display *, CARD16 *, BOOL * ); #endif } #endif #ifdef HAVE_XF86MISC #include #endif #ifdef HAVE_GLXCHOOSEVISUAL #include #endif #define LOCK_GRACE_DEFAULT 5000 #define AUTOLOGOUT_DEFAULT 600 // These lines are taken on 10/2009 from X.org (X11/XF86keysym.h), defining some special multimedia keys #define XF86XK_AudioMute 0x1008FF12 #define XF86XK_AudioRaiseVolume 0x1008FF13 #define XF86XK_AudioLowerVolume 0x1008FF11 #define XF86XK_Display 0x1008FF59 static Window gVRoot = 0; static Window gVRootData = 0; static Atom gXA_VROOT; static Atom gXA_SCREENSAVER_VERSION; static void segv_handler(int) { printf("[kdesktop_lock] WARNING: A fatal exception was encountered. Trapping and ignoring it so as not to compromise desktop security...\n\r"); sleep(1); } extern Atom qt_wm_state; //=========================================================================== // // Screen saver handling process. Handles screensaver window, // starting screensaver hacks, and password entry.f // LockProcess::LockProcess(bool child, bool useBlankOnly) : TQWidget(0L, "saver window", WX11BypassWM), mOpenGLVisual(0), child_saver(child), mParent(0), mUseBlankOnly(useBlankOnly), mSuspended(false), mVisibility(false), mRestoreXF86Lock(false), mForbidden(false), mAutoLogout(false), mVkbdProcess(NULL), mKWinModule(NULL), mPipeOpen(false), mPipeOpen_out(false), mInfoMessageDisplayed(false), mForceReject(false), mDialogControlLock(false), currentDialog(NULL), resizeTimer(NULL) { setupSignals(); setupPipe(); kapp->installX11EventFilter(this); // Get root window size XWindowAttributes rootAttr; XGetWindowAttributes(qt_xdisplay(), RootWindow(qt_xdisplay(), qt_xscreen()), &rootAttr); mRootWidth = rootAttr.width; mRootHeight = rootAttr.height; { // trigger creation of QToolTipManager, it does XSelectInput() on the root window TQWidget w; TQToolTip::add( &w, "foo" ); } XSelectInput( qt_xdisplay(), qt_xrootwin(), SubstructureNotifyMask | rootAttr.your_event_mask ); // Add non-KDE path KGlobal::dirs()->addResourceType("scrsav", KGlobal::dirs()->kde_default("apps") + "System/ScreenSavers/"); // Add KDE specific screensaver path TQString relPath="System/ScreenSavers/"; KServiceGroup::Ptr servGroup = KServiceGroup::baseGroup( "screensavers"); if (servGroup) { relPath=servGroup->relPath(); kdDebug(1204) << "relPath=" << relPath << endl; } KGlobal::dirs()->addResourceType("scrsav", KGlobal::dirs()->kde_default("apps") + relPath); // virtual root property gXA_VROOT = XInternAtom (qt_xdisplay(), "__SWM_VROOT", False); gXA_SCREENSAVER_VERSION = XInternAtom (qt_xdisplay(), "_SCREENSAVER_VERSION", False); connect(&mHackProc, TQT_SIGNAL(processExited(KProcess *)), TQT_SLOT(hackExited(KProcess *))); connect(&mSuspendTimer, TQT_SIGNAL(timeout()), TQT_SLOT(suspend())); TQStringList dmopt = TQStringList::split(TQChar(','), TQString::tqfromLatin1( ::getenv( "XDM_MANAGED" ))); for (TQStringList::ConstIterator it = dmopt.begin(); it != dmopt.end(); ++it) if ((*it).startsWith("method=")) mMethod = (*it).mid(7); configure(); #ifdef HAVE_DPMS if (mDPMSDepend) { BOOL on; CARD16 state; DPMSInfo(qt_xdisplay(), &state, &on); if (on) { connect(&mCheckDPMS, TQT_SIGNAL(timeout()), TQT_SLOT(checkDPMSActive())); // we can save CPU if we stop it as quickly as possible // but we waste CPU if we check too often -> so take 10s mCheckDPMS.start(10000); } } #endif #if (QT_VERSION-0 >= 0x030200) // XRANDR support connect( kapp->desktop(), TQT_SIGNAL( resized( int )), TQT_SLOT( desktopResized())); #endif greetPlugin.library = 0; KCrash::setCrashHandler(segv_handler); } //--------------------------------------------------------------------------- // // Destructor - usual cleanups. // LockProcess::~LockProcess() { if (greetPlugin.library) { if (greetPlugin.info->done) greetPlugin.info->done(); greetPlugin.library->unload(); } mPipeOpen = false; mPipeOpen_out = false; } static int signal_pipe[2]; static void sigterm_handler(int) { char tmp = 'T'; ::write( signal_pipe[1], &tmp, 1); } static void sighup_handler(int) { char tmp = 'H'; ::write( signal_pipe[1], &tmp, 1); } void LockProcess::timerEvent(TQTimerEvent *ev) { if (mAutoLogout && ev->timerId() == mAutoLogoutTimerId) { killTimer(mAutoLogoutTimerId); AutoLogout autologout(this); execDialog(&autologout); } } void LockProcess::setupPipe() { /* Create the FIFOs if they do not exist */ umask(0); mkdir(FIFO_DIR,0644); mknod(FIFO_FILE, S_IFIFO|0644, 0); chmod(FIFO_FILE, 0644); mPipe_fd = open(FIFO_FILE, O_RDONLY | O_NONBLOCK); if (mPipe_fd > -1) { mPipeOpen = true; TQTimer::singleShot( PIPE_CHECK_INTERVAL, this, TQT_SLOT(checkPipe()) ); } mknod(FIFO_FILE_OUT, S_IFIFO|0600, 0); chmod(FIFO_FILE_OUT, 0600); mPipe_fd_out = open(FIFO_FILE_OUT, O_RDWR | O_NONBLOCK); if (mPipe_fd_out > -1) { mPipeOpen_out = true; } } void LockProcess::checkPipe() { char readbuf[128]; int numread; TQString to_display; const char * pin_entry; if (mPipeOpen == true) { readbuf[0]=' '; numread = read(mPipe_fd, readbuf, 128); readbuf[numread] = 0; if (numread > 0) { if (readbuf[0] == 'C') { mInfoMessageDisplayed=false; while (mDialogControlLock == true) sleep(1); mDialogControlLock = true; if (currentDialog != NULL) { mForceReject = true; currentDialog->close(); } mDialogControlLock = false; } if (readbuf[0] == 'T') { to_display = readbuf; to_display = to_display.remove(0,1); // Lock out password dialogs and close any active dialog mInfoMessageDisplayed=true; while (mDialogControlLock == true) sleep(1); mDialogControlLock = true; if (currentDialog != NULL) { mForceReject = true; currentDialog->close(); } mDialogControlLock = false; // Display info message dialog TQTimer::singleShot( PIPE_CHECK_INTERVAL, this, TQT_SLOT(checkPipe()) ); InfoDlg inDlg( this ); inDlg.updateLabel(to_display); inDlg.setUnlockIcon(); int ret = execDialog( &inDlg ); mForceReject = false; return; } if ((readbuf[0] == 'E') || (readbuf[0] == 'W') || (readbuf[0] == 'I') || (readbuf[0] == 'K')) { to_display = readbuf; to_display = to_display.remove(0,1); // Lock out password dialogs and close any active dialog mInfoMessageDisplayed=true; while (mDialogControlLock == true) sleep(1); mDialogControlLock = true; if (currentDialog != NULL) { mForceReject = true; currentDialog->close(); } mDialogControlLock = false; // Display info message dialog TQTimer::singleShot( PIPE_CHECK_INTERVAL, this, TQT_SLOT(checkPipe()) ); InfoDlg inDlg( this ); inDlg.updateLabel(to_display); if (readbuf[0] == 'K') inDlg.setKDEIcon(); if (readbuf[0] == 'I') inDlg.setInfoIcon(); if (readbuf[0] == 'W') inDlg.setWarningIcon(); if (readbuf[0] == 'E') inDlg.setErrorIcon(); int ret = execDialog( &inDlg ); mForceReject = false; return; } if (readbuf[0] == 'Q') { to_display = readbuf; to_display = to_display.remove(0,1); // Lock out password dialogs and close any active dialog mInfoMessageDisplayed=true; while (mDialogControlLock == true) sleep(1); mDialogControlLock = true; if (currentDialog != NULL) { mForceReject = true; currentDialog->close(); } mDialogControlLock = false; // Display query dialog TQTimer::singleShot( PIPE_CHECK_INTERVAL, this, TQT_SLOT(checkPipe()) ); QueryDlg qryDlg( this ); qryDlg.updateLabel(to_display); qryDlg.setUnlockIcon(); mForceReject = false; int ret = execDialog( &qryDlg ); if (mForceReject == false) { pin_entry = qryDlg.getEntry(); mInfoMessageDisplayed=false; if (mPipeOpen_out == true) { write(mPipe_fd_out, pin_entry, strlen(pin_entry)+1); write(mPipe_fd_out, "\n\r", 3); } } mForceReject = false; return; } } TQTimer::singleShot( PIPE_CHECK_INTERVAL, this, TQT_SLOT(checkPipe()) ); } } void LockProcess::setupSignals() { struct sigaction act; // ignore SIGINT act.sa_handler=SIG_IGN; sigemptyset(&(act.sa_mask)); sigaddset(&(act.sa_mask), SIGINT); act.sa_flags = 0; sigaction(SIGINT, &act, 0L); // ignore SIGQUIT act.sa_handler=SIG_IGN; sigemptyset(&(act.sa_mask)); sigaddset(&(act.sa_mask), SIGQUIT); act.sa_flags = 0; sigaction(SIGQUIT, &act, 0L); // exit cleanly on SIGTERM act.sa_handler= sigterm_handler; sigemptyset(&(act.sa_mask)); sigaddset(&(act.sa_mask), SIGTERM); act.sa_flags = 0; sigaction(SIGTERM, &act, 0L); // SIGHUP forces lock act.sa_handler= sighup_handler; sigemptyset(&(act.sa_mask)); sigaddset(&(act.sa_mask), SIGHUP); act.sa_flags = 0; sigaction(SIGHUP, &act, 0L); pipe(signal_pipe); TQSocketNotifier* notif = new TQSocketNotifier(signal_pipe[0], TQSocketNotifier::Read, TQT_TQOBJECT(this) ); connect( notif, TQT_SIGNAL(activated(int)), TQT_SLOT(signalPipeSignal())); } void LockProcess::signalPipeSignal() { char tmp; ::read( signal_pipe[0], &tmp, 1); if( tmp == 'T' ) quitSaver(); else if( tmp == 'H' ) { if( !mLocked ) startLock(); } } //--------------------------------------------------------------------------- bool LockProcess::lock() { if (startSaver()) { // In case of a forced lock we don't react to events during // the dead-time to give the screensaver some time to activate. // That way we don't accidentally show the password dialog before // the screensaver kicks in because the user moved the mouse after // selecting "lock screen", that looks really untidy. mBusy = true; if (startLock()) { TQTimer::singleShot(1000, this, TQT_SLOT(slotDeadTimePassed())); return true; } stopSaver(); mBusy = false; } return false; } //--------------------------------------------------------------------------- void LockProcess::slotDeadTimePassed() { mBusy = false; } //--------------------------------------------------------------------------- bool LockProcess::defaultSave() { mLocked = false; if (startSaver()) { if (mLockGrace >= 0) TQTimer::singleShot(mLockGrace, this, TQT_SLOT(startLock())); return true; } return false; } //--------------------------------------------------------------------------- bool LockProcess::dontLock() { mLocked = false; return startSaver(); } //--------------------------------------------------------------------------- void LockProcess::quitSaver() { stopSaver(); kapp->quit(); } //--------------------------------------------------------------------------- // // Read and apply configuration. // void LockProcess::configure() { // the configuration is stored in kdesktop's config file if( KDesktopSettings::lock() ) { mLockGrace = KDesktopSettings::lockGrace(); if (mLockGrace < 0) mLockGrace = 0; else if (mLockGrace > 300000) mLockGrace = 300000; // 5 minutes, keep the value sane } else mLockGrace = -1; if ( KDesktopSettings::autoLogout() ) { mAutoLogout = true; mAutoLogoutTimeout = KDesktopSettings::autoLogoutTimeout(); mAutoLogoutTimerId = startTimer(mAutoLogoutTimeout * 1000); // in milliseconds } #ifdef HAVE_DPMS //if the user decided that the screensaver should run independent from //dpms, we shouldn't check for it, aleXXX mDPMSDepend = KDesktopSettings::dpmsDependent(); #endif mPriority = KDesktopSettings::priority(); if (mPriority < 0) mPriority = 0; if (mPriority > 19) mPriority = 19; mSaver = KDesktopSettings::saver(); if (mSaver.isEmpty() || mUseBlankOnly) mSaver = "KBlankscreen.desktop"; readSaver(); mPlugins = KDesktopSettings::pluginsUnlock(); if (mPlugins.isEmpty()) mPlugins = TQStringList("classic"); mPluginOptions = KDesktopSettings::pluginOptions(); } //--------------------------------------------------------------------------- // // Read the command line needed to run the screensaver given a .desktop file. // void LockProcess::readSaver() { if (!mSaver.isEmpty()) { TQString file = locate("scrsav", mSaver); bool opengl = kapp->authorize("opengl_screensavers"); bool manipulatescreen = kapp->authorize("manipulatescreen_screensavers"); KDesktopFile config(file, true); if (config.readEntry("X-KDE-Type").utf8() != 0) { TQString saverType = config.readEntry("X-KDE-Type").utf8(); TQStringList saverTypes = TQStringList::split(";", saverType); for (uint i = 0; i < saverTypes.count(); i++) { if ((saverTypes[i] == "ManipulateScreen") && !manipulatescreen) { kdDebug(1204) << "Screensaver is type ManipulateScreen and ManipulateScreen is forbidden" << endl; mForbidden = true; } if ((saverTypes[i] == "OpenGL") && !opengl) { kdDebug(1204) << "Screensaver is type OpenGL and OpenGL is forbidden" << endl; mForbidden = true; } if (saverTypes[i] == "OpenGL") { mOpenGLVisual = true; } } } kdDebug(1204) << "mForbidden: " << (mForbidden ? "true" : "false") << endl; if (config.hasActionGroup("Root")) { config.setActionGroup("Root"); mSaverExec = config.readPathEntry("Exec"); } } } //--------------------------------------------------------------------------- // // Create a window to draw our screen saver on. // void LockProcess::createSaverWindow() { Visual* visual = CopyFromParent; XSetWindowAttributes attrs; int flags = CWOverrideRedirect; #ifdef HAVE_GLXCHOOSEVISUAL if( mOpenGLVisual ) { static int attribs[][ 15 ] = { #define R GLX_RED_SIZE #define G GLX_GREEN_SIZE #define B GLX_BLUE_SIZE { GLX_RGBA, R, 8, G, 8, B, 8, GLX_DEPTH_SIZE, 8, GLX_DOUBLEBUFFER, GLX_STENCIL_SIZE, 1, None }, { GLX_RGBA, R, 4, G, 4, B, 4, GLX_DEPTH_SIZE, 4, GLX_DOUBLEBUFFER, GLX_STENCIL_SIZE, 1, None }, { GLX_RGBA, R, 8, G, 8, B, 8, GLX_DEPTH_SIZE, 8, GLX_DOUBLEBUFFER, None }, { GLX_RGBA, R, 4, G, 4, B, 4, GLX_DEPTH_SIZE, 4, GLX_DOUBLEBUFFER, None }, { GLX_RGBA, R, 8, G, 8, B, 8, GLX_DEPTH_SIZE, 8, GLX_STENCIL_SIZE, 1, None }, { GLX_RGBA, R, 4, G, 4, B, 4, GLX_DEPTH_SIZE, 4, GLX_STENCIL_SIZE, 1, None }, { GLX_RGBA, R, 8, G, 8, B, 8, GLX_DEPTH_SIZE, 8, None }, { GLX_RGBA, R, 4, G, 4, B, 4, GLX_DEPTH_SIZE, 4, None }, { GLX_RGBA, GLX_DEPTH_SIZE, 8, GLX_DOUBLEBUFFER, GLX_STENCIL_SIZE, 1, None }, { GLX_RGBA, GLX_DEPTH_SIZE, 8, GLX_DOUBLEBUFFER, None }, { GLX_RGBA, GLX_DEPTH_SIZE, 8, GLX_STENCIL_SIZE, 1, None }, { GLX_RGBA, GLX_DEPTH_SIZE, 8, None } #undef R #undef G #undef B }; for( unsigned int i = 0; i < sizeof( attribs ) / sizeof( attribs[ 0 ] ); ++i ) { if( XVisualInfo* info = glXChooseVisual( x11Display(), x11Screen(), attribs[ i ] )) { visual = info->visual; static Colormap colormap = 0; if( colormap != 0 ) XFreeColormap( x11Display(), colormap ); colormap = XCreateColormap( x11Display(), RootWindow( x11Display(), x11Screen()), visual, AllocNone ); attrs.colormap = colormap; flags |= CWColormap; XFree( info ); break; } } } #endif attrs.override_redirect = 1; hide(); Window w = XCreateWindow( x11Display(), RootWindow( x11Display(), x11Screen()), x(), y(), width(), height(), 0, x11Depth(), InputOutput, visual, flags, &attrs ); create( w ); // Some xscreensaver hacks check for this property const char *version = "KDE 2.0"; XChangeProperty (qt_xdisplay(), winId(), gXA_SCREENSAVER_VERSION, XA_STRING, 8, PropModeReplace, (unsigned char *) version, strlen(version)); XSetWindowAttributes attr; attr.event_mask = KeyPressMask | ButtonPressMask | PointerMotionMask | VisibilityChangeMask | ExposureMask; XChangeWindowAttributes(qt_xdisplay(), winId(), CWEventMask, &attr); // erase(); // set NoBackground so that the saver can capture the current // screen state if necessary setBackgroundMode(TQWidget::NoBackground); setCursor( tqblankCursor ); setGeometry(0, 0, mRootWidth, mRootHeight); kdDebug(1204) << "Saver window Id: " << winId() << endl; } void LockProcess::desktopResized() { mBusy = true; suspend(); setCursor( tqblankCursor ); // Get root window size XWindowAttributes rootAttr; XGetWindowAttributes(qt_xdisplay(), RootWindow(qt_xdisplay(), qt_xscreen()), &rootAttr); mRootWidth = rootAttr.width; mRootHeight = rootAttr.height; setGeometry(0, 0, mRootWidth, mRootHeight); // This slot needs to be able to execute very rapidly so as to prevent the user's desktop from ever // being displayed, so we finish the hack restarting/display prettying operations in a separate timed slot if (resizeTimer == NULL) { resizeTimer = new TQTimer( this ); connect( resizeTimer, TQT_SIGNAL(timeout()), this, TQT_SLOT(doDesktopResizeFinish()) ); } resizeTimer->start( 100, TRUE ); // 100 millisecond single shot timer; should allow display switching operations to finish before hack is started } void LockProcess::doDesktopResizeFinish() { stopHack(); while (mDialogControlLock == true) sleep(1); mDialogControlLock = true; if (currentDialog != NULL) { mForceReject = true; currentDialog->close(); } mDialogControlLock = false; // Restart the hack as the window size is now different startHack(); mBusy = false; } //--------------------------------------------------------------------------- // // Hide the screensaver window // void LockProcess::hideSaverWindow() { hide(); lower(); removeVRoot(winId()); XDeleteProperty(qt_xdisplay(), winId(), gXA_SCREENSAVER_VERSION); if ( gVRoot ) { unsigned long vroot_data[1] = { gVRootData }; XChangeProperty(qt_xdisplay(), gVRoot, gXA_VROOT, XA_WINDOW, 32, PropModeReplace, (unsigned char *)vroot_data, 1); gVRoot = 0; } XSync(qt_xdisplay(), False); } //--------------------------------------------------------------------------- static int ignoreXError(Display *, XErrorEvent *) { return 0; } //--------------------------------------------------------------------------- // // Save the current virtual root window // void LockProcess::saveVRoot() { Window rootReturn, parentReturn, *children; unsigned int numChildren; Window root = RootWindowOfScreen(ScreenOfDisplay(qt_xdisplay(), qt_xscreen())); gVRoot = 0; gVRootData = 0; int (*oldHandler)(Display *, XErrorEvent *); oldHandler = XSetErrorHandler(ignoreXError); if (XQueryTree(qt_xdisplay(), root, &rootReturn, &parentReturn, &children, &numChildren)) { for (unsigned int i = 0; i < numChildren; i++) { Atom actual_type; int actual_format; unsigned long nitems, bytesafter; unsigned char *newRoot = 0; if ((XGetWindowProperty(qt_xdisplay(), children[i], gXA_VROOT, 0, 1, False, XA_WINDOW, &actual_type, &actual_format, &nitems, &bytesafter, &newRoot) == Success) && newRoot) { gVRoot = children[i]; Window *dummy = (Window*)newRoot; gVRootData = *dummy; XFree ((char*) newRoot); break; } } if (children) { XFree((char *)children); } } XSetErrorHandler(oldHandler); } //--------------------------------------------------------------------------- // // Set the virtual root property // void LockProcess::setVRoot(Window win, Window vr) { if (gVRoot) removeVRoot(gVRoot); unsigned long rw = RootWindowOfScreen(ScreenOfDisplay(qt_xdisplay(), qt_xscreen())); unsigned long vroot_data[1] = { vr }; Window rootReturn, parentReturn, *children; unsigned int numChildren; Window top = win; while (1) { XQueryTree(qt_xdisplay(), top , &rootReturn, &parentReturn, &children, &numChildren); if (children) XFree((char *)children); if (parentReturn == rw) { break; } else top = parentReturn; } XChangeProperty(qt_xdisplay(), top, gXA_VROOT, XA_WINDOW, 32, PropModeReplace, (unsigned char *)vroot_data, 1); } //--------------------------------------------------------------------------- // // Remove the virtual root property // void LockProcess::removeVRoot(Window win) { XDeleteProperty (qt_xdisplay(), win, gXA_VROOT); } //--------------------------------------------------------------------------- // // Grab the keyboard. Returns true on success // bool LockProcess::grabKeyboard() { int rv = XGrabKeyboard( qt_xdisplay(), TQApplication::desktop()->winId(), True, GrabModeAsync, GrabModeAsync, CurrentTime ); return (rv == GrabSuccess); } #define GRABEVENTS ButtonPressMask | ButtonReleaseMask | PointerMotionMask | \ EnterWindowMask | LeaveWindowMask //--------------------------------------------------------------------------- // // Grab the mouse. Returns true on success // bool LockProcess::grabMouse() { int rv = XGrabPointer( qt_xdisplay(), TQApplication::desktop()->winId(), True, GRABEVENTS, GrabModeAsync, GrabModeAsync, None, TQCursor(tqblankCursor).handle(), CurrentTime ); return (rv == GrabSuccess); } //--------------------------------------------------------------------------- // // Grab keyboard and mouse. Returns true on success. // bool LockProcess::grabInput() { XSync(qt_xdisplay(), False); if (!grabKeyboard()) { sleep(1); if (!grabKeyboard()) { return false; } } if (!grabMouse()) { sleep(1); if (!grabMouse()) { XUngrabKeyboard(qt_xdisplay(), CurrentTime); return false; } } lockXF86(); return true; } //--------------------------------------------------------------------------- // // Release mouse an keyboard grab. // void LockProcess::ungrabInput() { XUngrabKeyboard(qt_xdisplay(), CurrentTime); XUngrabPointer(qt_xdisplay(), CurrentTime); unlockXF86(); } //--------------------------------------------------------------------------- // // Start the screen saver. // bool LockProcess::startSaver() { if (!child_saver && !grabInput()) { kdWarning(1204) << "LockProcess::startSaver() grabInput() failed!!!!" << endl; return false; } mBusy = false; saveVRoot(); if (mParent) { TQSocketNotifier *notifier = new TQSocketNotifier(mParent, TQSocketNotifier::Read, TQT_TQOBJECT(this), "notifier"); connect(notifier, TQT_SIGNAL( activated (int)), TQT_SLOT( quitSaver())); } createSaverWindow(); move(0, 0); show(); setCursor( tqblankCursor ); raise(); XSync(qt_xdisplay(), False); setVRoot( winId(), winId() ); startHack(); return true; } //--------------------------------------------------------------------------- // // Stop the screen saver. // void LockProcess::stopSaver() { kdDebug(1204) << "LockProcess: stopping saver" << endl; resume( true ); stopHack(); hideSaverWindow(); mVisibility = false; if (!child_saver) { if (mLocked) DM().setLock( false ); ungrabInput(); const char *out = "GOAWAY!"; for (TQValueList::ConstIterator it = child_sockets.begin(); it != child_sockets.end(); ++it) write(*it, out, sizeof(out)); } } // private static TQVariant LockProcess::getConf(void *ctx, const char *key, const TQVariant &dflt) { LockProcess *that = (LockProcess *)ctx; TQString fkey = TQString::tqfromLatin1( key ) + '='; for (TQStringList::ConstIterator it = that->mPluginOptions.begin(); it != that->mPluginOptions.end(); ++it) if ((*it).startsWith( fkey )) return (*it).mid( fkey.length() ); return dflt; } void LockProcess::cantLock( const TQString &txt) { msgBox( TQMessageBox::Critical, i18n("Will not lock the session, as unlocking would be impossible:\n") + txt ); } #if 0 // placeholders for later i18n("Cannot start kcheckpass."); i18n("kcheckpass is unable to operate. Possibly it is not SetUID root."); #endif //--------------------------------------------------------------------------- // // Make the screen saver password protected. // bool LockProcess::startLock() { for (TQStringList::ConstIterator it = mPlugins.begin(); it != mPlugins.end(); ++it) { GreeterPluginHandle plugin; TQString path = KLibLoader::self()->findLibrary( ((*it)[0] == '/' ? *it : "kgreet_" + *it ).latin1() ); if (path.isEmpty()) { kdWarning(1204) << "GreeterPlugin " << *it << " does not exist" << endl; continue; } if (!(plugin.library = KLibLoader::self()->library( path.latin1() ))) { kdWarning(1204) << "Cannot load GreeterPlugin " << *it << " (" << path << ")" << endl; continue; } if (!plugin.library->hasSymbol( "kgreeterplugin_info" )) { kdWarning(1204) << "GreeterPlugin " << *it << " (" << path << ") is no valid greet widget plugin" << endl; plugin.library->unload(); continue; } plugin.info = (kgreeterplugin_info*)plugin.library->symbol( "kgreeterplugin_info" ); if (plugin.info->method && !mMethod.isEmpty() && mMethod != plugin.info->method) { kdDebug(1204) << "GreeterPlugin " << *it << " (" << path << ") serves " << plugin.info->method << ", not " << mMethod << endl; plugin.library->unload(); continue; } if (!plugin.info->init( mMethod, getConf, this )) { kdDebug(1204) << "GreeterPlugin " << *it << " (" << path << ") refuses to serve " << mMethod << endl; plugin.library->unload(); continue; } kdDebug(1204) << "GreeterPlugin " << *it << " (" << plugin.info->method << ", " << plugin.info->name << ") loaded" << endl; greetPlugin = plugin; mLocked = true; DM().setLock( true ); return true; } cantLock( i18n("No appropriate greeter plugin configured.") ); return false; } //--------------------------------------------------------------------------- // bool LockProcess::startHack() { if (mSaverExec.isEmpty()) { return false; } if (mHackProc.isRunning()) { stopHack(); } mHackProc.clearArguments(); TQTextStream ts(&mSaverExec, IO_ReadOnly); TQString word; ts >> word; TQString path = KStandardDirs::findExe(word); if (!path.isEmpty()) { mHackProc << path; kdDebug(1204) << "Starting hack: " << path << endl; while (!ts.atEnd()) { ts >> word; if (word == "%w") { word = word.setNum(winId()); } mHackProc << word; } if (!mForbidden) { if (mHackProc.start() == true) { #ifdef HAVE_SETPRIORITY setpriority(PRIO_PROCESS, mHackProc.pid(), mPriority); #endif //bitBlt(this, 0, 0, &mOriginal); return true; } } else // we aren't allowed to start the specified screensaver either because it didn't run for some reason // according to the kiosk restrictions forbid it { setBackgroundColor(black); } } return false; } //--------------------------------------------------------------------------- // void LockProcess::stopHack() { if (mHackProc.isRunning()) { mHackProc.kill(); if (!mHackProc.wait(10)) { mHackProc.kill(SIGKILL); } } } //--------------------------------------------------------------------------- // void LockProcess::hackExited(KProcess *) { // Hack exited while we're supposed to be saving the screen. // Make sure the saver window is black. setBackgroundColor(black); } void LockProcess::suspend() { if(!mSuspended) { mHackProc.kill(SIGSTOP); TQApplication::syncX(); mSavedScreen = TQPixmap::grabWindow( winId()); } mSuspended = true; } void LockProcess::resume( bool force ) { if( !force && (!mDialogs.isEmpty() || !mVisibility )) return; // no resuming with dialog visible or when not visible if(mSuspended) { XForceScreenSaver(qt_xdisplay(), ScreenSaverReset ); bitBlt( this, 0, 0, &mSavedScreen ); TQApplication::syncX(); mHackProc.kill(SIGCONT); } mSuspended = false; } //--------------------------------------------------------------------------- // // Show the password dialog // This is called only in the master process // bool LockProcess::checkPass() { if (mInfoMessageDisplayed == false) { if (mAutoLogout) killTimer(mAutoLogoutTimerId); showVkbd(); PasswordDlg passDlg( this, &greetPlugin); int ret = execDialog( &passDlg ); hideVkbd(); if (mForceReject == true) { ret = TQDialog::Rejected; } mForceReject = false; XWindowAttributes rootAttr; XGetWindowAttributes(qt_xdisplay(), RootWindow(qt_xdisplay(), qt_xscreen()), &rootAttr); if(( rootAttr.your_event_mask & SubstructureNotifyMask ) == 0 ) { kdWarning() << "ERROR: Something removed SubstructureNotifyMask from the root window!!!" << endl; XSelectInput( qt_xdisplay(), qt_xrootwin(), SubstructureNotifyMask | rootAttr.your_event_mask ); } return ret == TQDialog::Accepted; } else { return 0; } } static void fakeFocusIn( WId window ) { // We have keyboard grab, so this application will // get keyboard events even without having focus. // Fake FocusIn to make Qt realize it has the active // window, so that it will correctly show cursor in the dialog. XEvent ev; memset(&ev, 0, sizeof(ev)); ev.xfocus.display = qt_xdisplay(); ev.xfocus.type = FocusIn; ev.xfocus.window = window; ev.xfocus.mode = NotifyNormal; ev.xfocus.detail = NotifyAncestor; XSendEvent( qt_xdisplay(), window, False, NoEventMask, &ev ); } int LockProcess::execDialog( TQDialog *dlg ) { currentDialog=dlg; dlg->adjustSize(); TQRect rect = dlg->geometry(); rect.moveCenter(KGlobalSettings::desktopGeometry(TQCursor::pos()).center()); dlg->move( rect.topLeft() ); if (mDialogs.isEmpty()) { suspend(); XChangeActivePointerGrab( qt_xdisplay(), GRABEVENTS, TQCursor(tqarrowCursor).handle(), CurrentTime); } mDialogs.prepend( dlg ); fakeFocusIn( dlg->winId()); int rt = dlg->exec(); while (mDialogControlLock == true) sleep(1); currentDialog = NULL; mDialogs.remove( dlg ); if( mDialogs.isEmpty() ) { XChangeActivePointerGrab( qt_xdisplay(), GRABEVENTS, TQCursor(tqblankCursor).handle(), CurrentTime); resume( false ); } else fakeFocusIn( mDialogs.first()->winId()); return rt; } void LockProcess::preparePopup() { TQWidget *dlg = (TQWidget *)sender(); mDialogs.prepend( dlg ); fakeFocusIn( dlg->winId() ); } void LockProcess::cleanupPopup() { TQWidget *dlg = (TQWidget *)sender(); mDialogs.remove( dlg ); fakeFocusIn( mDialogs.first()->winId() ); } void LockProcess::doFunctionKeyBroadcast() { // Provide a clean, pretty display switch by hiding the password dialog here mBusy=true; TQTimer::singleShot(1000, this, TQT_SLOT(slotDeadTimePassed())); if (mkeyCode == XKeysymToKeycode(qt_xdisplay(), XF86XK_Display)) { while (mDialogControlLock == true) sleep(1); mDialogControlLock = true; if (currentDialog != NULL) { mForceReject = true; currentDialog->close(); } mDialogControlLock = false; } setCursor( tqblankCursor ); DCOPRef ref( "*", "MainApplication-Interface"); ref.send("sendFakeKey", DCOPArg(mkeyCode , "unsigned int")); } //--------------------------------------------------------------------------- // // X11 Event. // bool LockProcess::x11Event(XEvent *event) { // Allow certain very specific keypresses through // Key: Reason: // XF86Display You need to be able to see the screen when unlocking your computer // XF86AudioMute Would be nice to be able to shut your computer up in an emergency while it is locked // XF86AudioRaiseVolume Ditto // XF86AudioLowerVolume Ditto //if ((event->type == KeyPress) || (event->type == KeyRelease)) { if (event->type == KeyPress) { if ((event->xkey.keycode == XKeysymToKeycode(event->xkey.display, XF86XK_Display)) || \ (event->xkey.keycode == XKeysymToKeycode(event->xkey.display, XF86XK_AudioMute)) || \ (event->xkey.keycode == XKeysymToKeycode(event->xkey.display, XF86XK_AudioRaiseVolume)) || \ (event->xkey.keycode == XKeysymToKeycode(event->xkey.display, XF86XK_AudioLowerVolume))) { mkeyCode = event->xkey.keycode; TQTimer::singleShot( 100, this, TQT_SLOT(doFunctionKeyBroadcast()) ); return true; } } switch (event->type) { case ButtonPress: case MotionNotify: case ButtonRelease: if( forwardVkbdEvent( event )) return true; // filter out // fall through case KeyPress: if (mBusy || !mDialogs.isEmpty()) break; mBusy = true; if (!mLocked || checkPass()) { stopSaver(); kapp->quit(); } else if (mAutoLogout) // we need to restart the auto logout countdown { killTimer(mAutoLogoutTimerId); mAutoLogoutTimerId = startTimer(mAutoLogoutTimeout); } mBusy = false; return true; case VisibilityNotify: if( event->xvisibility.window == winId()) { // mVisibility == false means the screensaver is not visible at all // e.g. when switched to text console mVisibility = !(event->xvisibility.state == VisibilityFullyObscured); if(!mVisibility) mSuspendTimer.start(2000, true); else { mSuspendTimer.stop(); resume( false ); } if (event->xvisibility.state != VisibilityUnobscured) stayOnTop(); } break; case ConfigureNotify: // from SubstructureNotifyMask on the root window if(event->xconfigure.event == qt_xrootwin()) stayOnTop(); for( TQValueList< VkbdWindow >::Iterator it = mVkbdWindows.begin(); it != mVkbdWindows.end(); ++it ) { if( (*it).id == event->xconfigure.window ) { (*it).rect = TQRect( event->xconfigure.x, event->xconfigure.y, event->xconfigure.width, event->xconfigure.height ); break; } } break; case MapNotify: // from SubstructureNotifyMask on the root window windowAdded( event->xmap.window, false ); if( event->xmap.event == qt_xrootwin()) stayOnTop(); break; case DestroyNotify: for( TQValueList< VkbdWindow >::Iterator it = mVkbdWindows.begin(); it != mVkbdWindows.end(); ++it ) if( (*it).id == event->xdestroywindow.window ) { mVkbdWindows.remove( it ); break; } break; } // We have grab with the grab window being the root window. // This results in key events being sent to the root window, // but they should be sent to the dialog if it's visible. // It could be solved by setFocus() call, but that would mess // the focus after this process exits. // Qt seems to be quite hard to persuade to redirect the event, // so let's simply dupe it with correct destination window, // and ignore the original one. if(!mDialogs.isEmpty() && ( event->type == KeyPress || event->type == KeyRelease) && event->xkey.window != mDialogs.first()->winId()) { XEvent ev2 = *event; ev2.xkey.window = ev2.xkey.subwindow = mDialogs.first()->winId(); tqApp->x11ProcessEvent( &ev2 ); return true; } return false; } void LockProcess::stayOnTop() { if(!mDialogs.isEmpty() || !mVkbdWindows.isEmpty()) { // this restacking is written in a way so that // if the stacking positions actually don't change, // all restacking operations will be no-op, // and no ConfigureNotify will be generated, // thus avoiding possible infinite loops if( !mVkbdWindows.isEmpty()) XRaiseWindow( qt_xdisplay(), mVkbdWindows.first().id ); else XRaiseWindow( qt_xdisplay(), mDialogs.first()->winId()); // raise topmost // and stack others below it Window* stack = new Window[ mDialogs.count() + mVkbdWindows.count() + 1 ]; int count = 0; for( TQValueList< VkbdWindow >::ConstIterator it = mVkbdWindows.begin(); it != mVkbdWindows.end(); ++it ) stack[ count++ ] = (*it).id; for( TQValueList< TQWidget* >::ConstIterator it = mDialogs.begin(); it != mDialogs.end(); ++it ) stack[ count++ ] = (*it)->winId(); stack[ count++ ] = winId(); XRestackWindows( x11Display(), stack, count ); delete[] stack; } else XRaiseWindow(qt_xdisplay(), winId()); } void LockProcess::checkDPMSActive() { #ifdef HAVE_DPMS BOOL on; CARD16 state; DPMSInfo(qt_xdisplay(), &state, &on); //kdDebug() << "checkDPMSActive " << on << " " << state << endl; if (state == DPMSModeStandby || state == DPMSModeSuspend || state == DPMSModeOff) { suspend(); } else if ( mSuspended ) { resume( true ); } #endif } #if defined(HAVE_XF86MISC) && defined(HAVE_XF86MISCSETGRABKEYSSTATE) // see http://cvsweb.xfree86.org/cvsweb/xc/programs/Xserver/hw/xfree86/common/xf86Events.c#rev3.113 // This allows enabling the "Allow{Deactivate/Closedown}Grabs" options in XF86Config, // and kdesktop_lock will still lock the session. static enum { Unknown, Yes, No } can_do_xf86_lock = Unknown; void LockProcess::lockXF86() { if( can_do_xf86_lock == Unknown ) { int major, minor; if( XF86MiscQueryVersion( qt_xdisplay(), &major, &minor ) && major >= 0 && minor >= 5 ) can_do_xf86_lock = Yes; else can_do_xf86_lock = No; } if( can_do_xf86_lock != Yes ) return; if( mRestoreXF86Lock ) return; if( XF86MiscSetGrabKeysState( qt_xdisplay(), False ) != MiscExtGrabStateSuccess ) return; // success mRestoreXF86Lock = true; } void LockProcess::unlockXF86() { if( can_do_xf86_lock != Yes ) return; if( !mRestoreXF86Lock ) return; XF86MiscSetGrabKeysState( qt_xdisplay(), True ); mRestoreXF86Lock = false; } #else void LockProcess::lockXF86() { } void LockProcess::unlockXF86() { } #endif void LockProcess::msgBox( TQMessageBox::Icon type, const TQString &txt ) { TQDialog box( 0, "messagebox", true, (WFlags)WX11BypassWM ); TQFrame *winFrame = new TQFrame( &box ); winFrame->setFrameStyle( TQFrame::WinPanel | TQFrame::Raised ); winFrame->setLineWidth( 2 ); TQLabel *label1 = new TQLabel( winFrame ); label1->setPixmap( TQMessageBox::standardIcon( type ) ); TQLabel *label2 = new TQLabel( txt, winFrame ); KPushButton *button = new KPushButton( KStdGuiItem::ok(), winFrame ); button->setDefault( true ); button->tqsetSizePolicy( TQSizePolicy( TQSizePolicy::Preferred, TQSizePolicy::Preferred ) ); connect( button, TQT_SIGNAL( clicked() ), &box, TQT_SLOT( accept() ) ); TQVBoxLayout *vbox = new TQVBoxLayout( &box ); vbox->addWidget( winFrame ); TQGridLayout *grid = new TQGridLayout( winFrame, 2, 2, 10 ); grid->addWidget( label1, 0, 0, Qt::AlignCenter ); grid->addWidget( label2, 0, 1, Qt::AlignCenter ); grid->addMultiCellWidget( button, 1,1, 0,1, Qt::AlignCenter ); execDialog( &box ); } static int run_vkbd = -1; void LockProcess::showVkbd() { if( run_vkbd == - 1 ) { int status = system( "hal-find-by-property --key system.formfactor.subtype --string tabletpc" ); // status = 0; // enable for testing run_vkbd = ( WIFEXITED( status ) && WEXITSTATUS( status ) == 0 && !KStandardDirs::findExe( "xvkbd" ).isEmpty()) ? 1 : 0; } if( run_vkbd ) { mVkbdWindows.clear(); mVkbdLastEventWindow = None; mKWinModule = new KWinModule( NULL, KWinModule::INFO_WINDOWS ); connect( mKWinModule, TQT_SIGNAL( windowAdded( WId )), TQT_SLOT( windowAdded( WId ))); mVkbdProcess = new KProcess; *mVkbdProcess << "xvkbd" << "-compact" << "-geometry" << "-0-0" << "-xdm"; mVkbdProcess->start(); } } void LockProcess::hideVkbd() { if( mVkbdProcess != NULL ) { mVkbdProcess->kill(); delete mVkbdProcess; mVkbdProcess = NULL; delete mKWinModule; mKWinModule = NULL; mVkbdWindows.clear(); } } void LockProcess::windowAdded( WId w ) { windowAdded( w, true ); } void LockProcess::windowAdded( WId w, bool managed ) { KWin::WindowInfo info = KWin::windowInfo( w, 0, NET::WM2WindowClass ); if( info.windowClassClass().lower() != "xvkbd" ) return; // Unmanaged windows (i.e. popups) don't currently work anyway, since they // don't have WM_CLASS set anyway. I could perhaps try tricks with X id // ranges if really needed. if( managed ) { // withdraw the window, wait for it to be withdrawn, reparent it directly // to root at the right position XWithdrawWindow( qt_xdisplay(), w, qt_xscreen()); for(;;) { Atom type; int format; unsigned long length, after; unsigned char *data; int r = XGetWindowProperty( qt_xdisplay(), w, qt_wm_state, 0, 2, false, AnyPropertyType, &type, &format, &length, &after, &data ); bool withdrawn = true; if ( r == Success && data && format == 32 ) { TQ_UINT32 *wstate = (TQ_UINT32*)data; withdrawn = (*wstate == WithdrawnState ); XFree( (char *)data ); } if( withdrawn ) break; } } XSelectInput( qt_xdisplay(), w, StructureNotifyMask ); XWindowAttributes attr_geom; if( !XGetWindowAttributes( qt_xdisplay(), w, &attr_geom )) return; int x = XDisplayWidth( qt_xdisplay(), qt_xscreen()) - attr_geom.width; int y = XDisplayHeight( qt_xdisplay(), qt_xscreen()) - attr_geom.height; if( managed ) { XSetWindowAttributes attr; attr.override_redirect = True; XChangeWindowAttributes( qt_xdisplay(), w, CWOverrideRedirect, &attr ); XReparentWindow( qt_xdisplay(), w, qt_xrootwin(), x, y ); XMapWindow( qt_xdisplay(), w ); } VkbdWindow data; data.id = w; data.rect = TQRect( x, y, attr_geom.width, attr_geom.height ); mVkbdWindows.prepend( data ); } bool LockProcess::forwardVkbdEvent( XEvent* event ) { if( mVkbdProcess == NULL ) return false; TQPoint pos; Time time; switch( event->type ) { case ButtonPress: case ButtonRelease: pos = TQPoint( event->xbutton.x, event->xbutton.y ); time = event->xbutton.time; break; case MotionNotify: pos = TQPoint( event->xmotion.x, event->xmotion.y ); time = event->xmotion.time; break; default: return false; } // vkbd windows are kept topmost, so just find the first one in the position for( TQValueList< VkbdWindow >::ConstIterator it = mVkbdWindows.begin(); it != mVkbdWindows.end(); ++it ) { if( TQT_TQRECT_OBJECT((*it).rect).tqcontains( pos )) { // Find the subwindow where the event should actually go. // Not exactly cheap in the number of X roundtrips but oh well. Window window = (*it).id; Window root, child; int root_x, root_y, x, y; unsigned int mask; for(;;) { if( !XQueryPointer( qt_xdisplay(), window, &root, &child, &root_x, &root_y, &x, &y, &mask )) return false; if( child == None ) break; window = child; } switch( event->type ) { case ButtonPress: case ButtonRelease: event->xbutton.x = x; event->xbutton.y = y; event->xbutton.subwindow = None; break; case MotionNotify: event->xmotion.x = x; event->xmotion.y = y; event->xmotion.subwindow = None; break; } event->xany.window = window; sendVkbdFocusInOut( window, time ); XSendEvent( qt_xdisplay(), window, False, 0, event ); return true; } } sendVkbdFocusInOut( None, time ); return false; } // Fake EnterNotify/LeaveNotify events as the mouse moves. They're not sent by X // because of the grab and having them makes xvkbd highlight the buttons (but // not needed otherwise it seems). void LockProcess::sendVkbdFocusInOut( WId window, Time t ) { if( mVkbdLastEventWindow == window ) return; if( mVkbdLastEventWindow != None ) { XEvent e; e.xcrossing.type = LeaveNotify; e.xcrossing.display = qt_xdisplay(); e.xcrossing.window = mVkbdLastEventWindow; e.xcrossing.root = qt_xrootwin(); e.xcrossing.subwindow = None; e.xcrossing.time = t; e.xcrossing.x = 0; e.xcrossing.y = 0; e.xcrossing.x_root = -1; e.xcrossing.y_root = -1; e.xcrossing.mode = NotifyNormal; e.xcrossing.detail = NotifyAncestor; e.xcrossing.same_screen = True; e.xcrossing.focus = False; e.xcrossing.state = 0; XSendEvent( qt_xdisplay(), mVkbdLastEventWindow, False, 0, &e ); } mVkbdLastEventWindow = window; if( mVkbdLastEventWindow != None ) { XEvent e; e.xcrossing.type = EnterNotify; e.xcrossing.display = qt_xdisplay(); e.xcrossing.window = mVkbdLastEventWindow; e.xcrossing.root = qt_xrootwin(); e.xcrossing.subwindow = None; e.xcrossing.time = t; e.xcrossing.x = 0; e.xcrossing.y = 0; e.xcrossing.x_root = 0; e.xcrossing.y_root = 0; e.xcrossing.mode = NotifyNormal; e.xcrossing.detail = NotifyAncestor; e.xcrossing.same_screen = True; e.xcrossing.focus = False; e.xcrossing.state = 0; XSendEvent( qt_xdisplay(), mVkbdLastEventWindow, False, 0, &e ); } } #include "lockprocess.moc"