Enforce policy for camera gesture in keyguard

Test:
1. Set lock screen, set keyguard policy. Lock the device.
   Observe that double tap is not showing camera

2. Set lock screen, unset the keyguard policy. Lock the device.
   Observe that double tap is showing camera

3. Unset lock screen (swipe), set the keyguard policy. Lock the device.
   Observe that double tap is showing camera.

4. Unset lock screen (swipe), unset the keyguard policy. Lock the device.
   Observe that double tap is showing camera.

Bug: 63787722
Merged-In: I104688eaad719528376e2851f837d5956a6a1169

Change-Id: I42e6d9015682998176fe41971356bde22e1b37b2
(cherry picked from commit 65f02e8ba7a9f013d6971b3d6d1bd95f1785cb3d)

3 files changed, 28 insertions, 19 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
index 9ff86ebf88aa..6aa805757d04 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
@@ -2215,4 +2215,23 @@ public abstract class BaseStatusBar extends SystemUI implements
             mAssistManager.startAssist(args);
         }
     }
+
+    public boolean isCameraAllowedByAdmin() {
+       if (mDevicePolicyManager.getCameraDisabled(null, mCurrentUserId)) {
+           return false;
+       } else if (isKeyguardShowing() && isKeyguardSecure()) {
+           // Check if the admin has disabled the camera specifically for the keyguard
+           return (mDevicePolicyManager.getKeyguardDisabledFeatures(null, mCurrentUserId)
+                   & DevicePolicyManager.KEYGUARD_DISABLE_SECURE_CAMERA) == 0;
+       }
+       return true;
+    }
+
+    public boolean isKeyguardShowing() {
+        if (mStatusBarKeyguardViewManager == null) {
+            Slog.i(TAG, "isKeyguardShowing() called before startKeyguard(), returning true");
+            return true;
+        }
+        return mStatusBarKeyguardViewManager.isShowing();
+    }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBottomAreaView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBottomAreaView.java
index 14176a6f5b3c..bf7e83ac07cb 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBottomAreaView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBottomAreaView.java
@@ -284,7 +284,10 @@ public class KeyguardBottomAreaView extends FrameLayout implements View.OnClickL
             return;
         }
         ResolveInfo resolved = resolveCameraIntent();
-        boolean visible = !isCameraDisabledByDpm() && resolved != null
+        boolean isCameraDisabled =
+                (mPhoneStatusBar != null) && !mPhoneStatusBar.isCameraAllowedByAdmin();
+        boolean visible = !isCameraDisabled
+                && resolved != null
                 && getResources().getBoolean(R.bool.config_keyguardShowCameraAffordance)
                 && mUserSetupComplete;
         mCameraImageView.setVisibility(visible ? View.VISIBLE : View.GONE);
@@ -318,24 +321,6 @@ public class KeyguardBottomAreaView extends FrameLayout implements View.OnClickL
                 && pm.resolveActivity(PHONE_INTENT, 0) != null;
     }
 
-    private boolean isCameraDisabledByDpm() {
-        final DevicePolicyManager dpm =
-                (DevicePolicyManager) getContext().getSystemService(Context.DEVICE_POLICY_SERVICE);
-        if (dpm != null && mPhoneStatusBar != null) {
-            try {
-                final int userId = ActivityManagerNative.getDefault().getCurrentUser().id;
-                final int disabledFlags = dpm.getKeyguardDisabledFeatures(null, userId);
-                final  boolean disabledBecauseKeyguardSecure =
-                        (disabledFlags & DevicePolicyManager.KEYGUARD_DISABLE_SECURE_CAMERA) != 0
-                                && mPhoneStatusBar.isKeyguardSecure();
-                return dpm.getCameraDisabled(null) || disabledBecauseKeyguardSecure;
-            } catch (RemoteException e) {
-                Log.e(TAG, "Can't get userId", e);
-            }
-        }
-        return false;
-    }
-
     private void watchForCameraPolicyChanges() {
         final IntentFilter filter = new IntentFilter();
         filter.addAction(DevicePolicyManager.ACTION_DEVICE_POLICY_MANAGER_STATE_CHANGED);
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
index bdd2c73bd674..c4aee64957a4 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
@@ -32,6 +32,7 @@ import android.graphics.Paint;
 import android.graphics.Rect;
 import android.util.AttributeSet;
 import android.util.MathUtils;
+import android.util.EventLog;
 import android.view.MotionEvent;
 import android.view.VelocityTracker;
 import android.view.View;
@@ -2433,6 +2434,10 @@ public class NotificationPanelView extends PanelView implements
      * @param keyguardIsShowing whether keyguard is being shown
      */
     public boolean canCameraGestureBeLaunched(boolean keyguardIsShowing) {
+        if (!mStatusBar.isCameraAllowedByAdmin()) {
+            EventLog.writeEvent(0x534e4554, "63787722", -1, "");
+            return false;
+        }
         ResolveInfo resolveInfo = mKeyguardBottomArea.resolveCameraIntent();
         String packageToLaunch = (resolveInfo == null || resolveInfo.activityInfo == null)
                 ? null : resolveInfo.activityInfo.packageName;