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)
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
index 4866fca..3806585 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
@@ -2663,4 +2663,23 @@
             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 4d0e5d3..c674a82 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBottomAreaView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBottomAreaView.java
@@ -305,7 +305,10 @@
             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);
@@ -339,24 +342,6 @@
                 && 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 ede6fd0..16e0e64 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
@@ -31,6 +31,7 @@
 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;
@@ -2329,6 +2330,10 @@
      * @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;