Add a new intrusion detection feature to kdesktop_lock

When enabled the date and time of the last screen lock is shown before login


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1258934 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

kdesktop/kdesktop.kcfg

@@ -318,6 +318,13 @@
       <!-- /home/paco/cvsroot/kdebase/kdesktop/lock/lockprocess.cc:336 -->
       <!--     mSaver = config.readEntry("UseTDESAK"); -->
     </entry>
+    <entry key="ShowLockDateTime" type="Bool">
+      <default>true</default>
+      <label></label>
+      <whatsthis>Set to true to enable display of the date and time of desktop lock as an additional intrusion detection measure</whatsthis>
+      <!-- /home/paco/cvsroot/kdebase/kdesktop/lock/lockprocess.cc:336 -->
+      <!--     mSaver = config.readEntry("ShowLockDateTime"); -->
+    </entry>
     <entry key="DelaySaverStart" type="Bool">
       <default>true</default>
       <label></label>

kdesktop/lock/lockdlg.cc

@@ -78,6 +78,25 @@ PasswordDlg::PasswordDlg(LockProcess *parent, GreeterPluginHandle *plugin)
       mPlugin( plugin ),
       mCapsLocked(-1),
       mUnlockingFailed(false)
+{
+    init(plugin);
+}
+
+//
+// Simple dialog for entering a password.
+// This version includes support for displaying the date and time the lock process was started
+//
+PasswordDlg::PasswordDlg(LockProcess *parent, GreeterPluginHandle *plugin, TQDateTime lockStartDateTime)
+    : TQDialog(parent, "password dialog", true, (trinity_desktop_lock_use_system_modal_dialogs?((WFlags)WStyle_StaysOnTop):((WFlags)WX11BypassWM))),
+      mPlugin( plugin ),
+      mCapsLocked(-1),
+      mUnlockingFailed(false)
+{
+    m_lockStartDT = lockStartDateTime;
+    init(plugin);
+}
+
+void PasswordDlg::init(GreeterPluginHandle *plugin)
 {
     dialogHideTimeout = trinity_desktop_lock_delay_screensaver_start?KDesktopSettings::timeout()*1000:10*1000;
 
@@ -115,6 +134,11 @@ PasswordDlg::PasswordDlg(LockProcess *parent, GreeterPluginHandle *plugin)
                 i18n("<nobr><b>The session was locked by %1</b><br>").arg( user.fullName() ), frame );
     }
 
+    TQLabel *lockDTLabel;
+    if ((trinity_desktop_lock_use_system_modal_dialogs) && (!m_lockStartDT.isNull())) {
+        lockDTLabel = new TQLabel(i18n("This session has been locked since %1").arg(m_lockStartDT.toString()), frame);
+    }
+
     mStatusLabel = new TQLabel( "<b> </b>", frame );
     mStatusLabel->tqsetAlignment( TQLabel::AlignCenter );
 
@@ -148,13 +172,25 @@ PasswordDlg::PasswordDlg(LockProcess *parent, GreeterPluginHandle *plugin)
     if (trinity_desktop_lock_use_system_modal_dialogs) {
         KSMModalDialogHeader* theader = new KSMModalDialogHeader( frame );
 
-        frameLayout = new TQGridLayout( frame, 1, 1, KDialog::marginHint(), KDialog::spacingHint() );
-        frameLayout->addMultiCellWidget( theader, 0, 0, 0, 2, Qt::AlignTop );
-        frameLayout->addWidget( greetLabel, 1, 1 );
-        frameLayout->addItem( greet->getLayoutItem(), 2, 1 );
-        frameLayout->addLayout( layStatus, 3, 1 );
-        frameLayout->addMultiCellWidget( sep, 4, 4, 0, 1 );
-        frameLayout->addMultiCellLayout( layButtons, 5, 5, 0, 1 );
+        if (!m_lockStartDT.isNull()) {
+            frameLayout = new TQGridLayout( frame, 1, 1, KDialog::marginHint(), KDialog::spacingHint() );
+            frameLayout->addMultiCellWidget( theader, 0, 0, 0, 2, Qt::AlignTop );
+            frameLayout->addWidget( greetLabel, 1, 1 );
+            frameLayout->addWidget( lockDTLabel, 2, 1 );
+            frameLayout->addItem( greet->getLayoutItem(), 3, 1 );
+            frameLayout->addLayout( layStatus, 4, 1 );
+            frameLayout->addMultiCellWidget( sep, 5, 5, 0, 1 );
+            frameLayout->addMultiCellLayout( layButtons, 6, 6, 0, 1 );
+        }
+        else {
+            frameLayout = new TQGridLayout( frame, 1, 1, KDialog::marginHint(), KDialog::spacingHint() );
+            frameLayout->addMultiCellWidget( theader, 0, 0, 0, 2, Qt::AlignTop );
+            frameLayout->addWidget( greetLabel, 1, 1 );
+            frameLayout->addItem( greet->getLayoutItem(), 2, 1 );
+            frameLayout->addLayout( layStatus, 3, 1 );
+            frameLayout->addMultiCellWidget( sep, 4, 4, 0, 1 );
+            frameLayout->addMultiCellLayout( layButtons, 5, 5, 0, 1 );
+        }
     }
     else {
         frameLayout = new TQGridLayout( frame, 1, 1, KDialog::marginHint(), KDialog::spacingHint() );
@@ -242,16 +278,19 @@ void PasswordDlg::updateLabel()
     {
         mStatusLabel->setPaletteForegroundColor(Qt::black);
         mStatusLabel->setText(i18n("<b>Unlocking failed</b>"));
+//         mStatusLabel->show();
     }
     else
     if (mCapsLocked)
     {
         mStatusLabel->setPaletteForegroundColor(Qt::red);
         mStatusLabel->setText(i18n("<b>Warning: Caps Lock on</b>"));
+//         mStatusLabel->show();
     }
     else
     {
         mStatusLabel->setText("<b> </b>");
+//         mStatusLabel->hide();
     }
 }
 

kdesktop/lock/lockdlg.h

@@ -13,6 +13,7 @@
 
 #include <tqdialog.h>
 #include <tqstringlist.h>
+#include <tqdatetime.h>
 
 #include "lockprocess.h"
 
@@ -35,7 +36,9 @@ class PasswordDlg : public TQDialog, public KGreeterPluginHandler
 
 public:
     PasswordDlg(LockProcess *parent, GreeterPluginHandle *plugin);
+    PasswordDlg(LockProcess *parent, GreeterPluginHandle *plugin, TQDateTime lockStartDateTime);
     ~PasswordDlg();
+    void init(GreeterPluginHandle *plugin);
     virtual void show();
 
     // from KGreetPluginHandler
@@ -91,6 +94,7 @@ private:
     TQStringList::iterator currLayout;
     int         sPid, sFd;
     TQListView   *lv;
+    TQDateTime   m_lockStartDT;
 };
 
 #endif

kdesktop/lock/lockprocess.cc

@@ -157,6 +157,7 @@ LockProcess::LockProcess(bool child, bool useBlankOnly)
       child_saver(child),
       mParent(0),
       mUseBlankOnly(useBlankOnly),
+      mShowLockDateTime(false),
       mSuspended(false),
       mVisibility(false),
       mRestoreXF86Lock(false),
@@ -184,6 +185,8 @@ LockProcess::LockProcess(bool child, bool useBlankOnly)
     setupSignals();
     setupPipe();
 
+    mShowLockDateTime = KDesktopSettings::showLockDateTime();
+
     kapp->installX11EventFilter(this);
 
     mForceContinualLockDisplayTimer = new TQTimer( this );
@@ -1529,7 +1532,7 @@ bool LockProcess::checkPass()
         }
 
         showVkbd();
-        PasswordDlg passDlg( this, &greetPlugin);
+        PasswordDlg passDlg( this, &greetPlugin, (mShowLockDateTime)?TQDateTime::currentDateTime():TQDateTime());
         int ret = execDialog( &passDlg );
         hideVkbd();
 

kdesktop/lock/lockprocess.h

@@ -138,6 +138,7 @@ private:
     TQValueList<int> child_sockets;
     int         mParent;
     bool        mUseBlankOnly;
+    bool        mShowLockDateTime;
     bool        mSuspended;
     TQTimer      mSuspendTimer;
     bool        mVisibility;