Disable keyguard while docked when the lock screen is insecure.

Change-Id: If6e11bb49a2cbbe904517e6037d1e8b99fe2717c
Signed-off-by: Mike Lockwood <lockwood@android.com>

2 files changed, 31 insertions, 4 deletions

diff --git a/services/java/com/android/server/DockObserver.java b/services/java/com/android/server/DockObserver.java
index a70134d..aa9c243 100644
--- a/services/java/com/android/server/DockObserver.java
+++ b/services/java/com/android/server/DockObserver.java
@@ -17,6 +17,7 @@
 package com.android.server;
 
 import android.app.Activity;
+import android.app.KeyguardManager;
 import android.content.ActivityNotFoundException;
 import android.content.BroadcastReceiver;
 import android.content.Context;
@@ -27,6 +28,8 @@ import android.os.SystemClock;
 import android.os.UEventObserver;
 import android.util.Log;
 
+import com.android.internal.widget.LockPatternUtils;
+
 import java.io.FileReader;
 import java.io.FileNotFoundException;
 
@@ -46,7 +49,11 @@ class DockObserver extends UEventObserver {
     private final Context mContext;
 
     private PowerManagerService mPowerManager;
-    
+
+    private KeyguardManager.KeyguardLock mKeyguardLock;
+    private boolean mKeyguardDisabled;
+    private LockPatternUtils mLockPatternUtils;
+
     // The broadcast receiver which receives the result of the ordered broadcast sent when
     // the dock state changes. The original ordered broadcast is sent with an initial result
     // code of RESULT_OK. If any of the registered broadcast receivers changes this value, e.g.,
@@ -88,6 +95,7 @@ class DockObserver extends UEventObserver {
     public DockObserver(Context context, PowerManagerService pm) {
         mContext = context;
         mPowerManager = pm;
+        mLockPatternUtils = new LockPatternUtils(context.getContentResolver());
         init();  // set initial status
         startObserving(DOCK_UEVENT_MATCH);
     }
@@ -130,6 +138,10 @@ class DockObserver extends UEventObserver {
 
     void systemReady() {
         synchronized (this) {
+            KeyguardManager keyguardManager =
+                    (KeyguardManager)mContext.getSystemService(Context.KEYGUARD_SERVICE);
+            mKeyguardLock = keyguardManager.newKeyguardLock(TAG);
+
             // don't bother broadcasting undocked here
             if (mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED) {
                 update();
@@ -142,10 +154,25 @@ class DockObserver extends UEventObserver {
         mHandler.sendEmptyMessage(0);
     }
 
+    private final void updateKeyguardLocked() {
+        if (!mLockPatternUtils.isLockPatternEnabled()) {
+            if (!mKeyguardDisabled && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED) {
+                Log.d(TAG, "calling mKeyguardLock.disableKeyguard");
+                mKeyguardLock.disableKeyguard();
+                mKeyguardDisabled = true;
+            } else if (mKeyguardDisabled && mDockState == Intent.EXTRA_DOCK_STATE_UNDOCKED) {
+                Log.d(TAG, "calling mKeyguardLock.reenableKeyguard");
+                mKeyguardLock.reenableKeyguard();
+                mKeyguardDisabled = false;
+            }
+        }
+    }
+
     private final Handler mHandler = new Handler() {
         @Override
         public void handleMessage(Message msg) {
             synchronized (this) {
+                updateKeyguardLocked();
                 Log.d(TAG, "Broadcasting dock state " + mDockState);
                 // Pack up the values and broadcast them to everyone
                 mPowerManager.userActivityWithForce(SystemClock.uptimeMillis(), false, true);
diff --git a/services/java/com/android/server/WindowManagerService.java b/services/java/com/android/server/WindowManagerService.java
index 30855b1..01a4122 100644
--- a/services/java/com/android/server/WindowManagerService.java
+++ b/services/java/com/android/server/WindowManagerService.java
@@ -3965,7 +3965,7 @@ public class WindowManagerService extends IWindowManager.Stub
     // -------------------------------------------------------------
 
     public void disableKeyguard(IBinder token, String tag) {
-        if (mContext.checkCallingPermission(android.Manifest.permission.DISABLE_KEYGUARD)
+        if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DISABLE_KEYGUARD)
             != PackageManager.PERMISSION_GRANTED) {
             throw new SecurityException("Requires DISABLE_KEYGUARD permission");
         }
@@ -3973,7 +3973,7 @@ public class WindowManagerService extends IWindowManager.Stub
     }
 
     public void reenableKeyguard(IBinder token) {
-        if (mContext.checkCallingPermission(android.Manifest.permission.DISABLE_KEYGUARD)
+        if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DISABLE_KEYGUARD)
             != PackageManager.PERMISSION_GRANTED) {
             throw new SecurityException("Requires DISABLE_KEYGUARD permission");
         }
@@ -3999,7 +3999,7 @@ public class WindowManagerService extends IWindowManager.Stub
      * @see android.app.KeyguardManager#exitKeyguardSecurely
      */
     public void exitKeyguardSecurely(final IOnKeyguardExitResult callback) {
-        if (mContext.checkCallingPermission(android.Manifest.permission.DISABLE_KEYGUARD)
+        if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DISABLE_KEYGUARD)
             != PackageManager.PERMISSION_GRANTED) {
             throw new SecurityException("Requires DISABLE_KEYGUARD permission");
         }