Merge "Wireless emergency message has to be run in pin app mode" into tm-dev

services/core/java/com/android/server/wm/LockTaskController.java

@@ -64,6 +64,7 @@ import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.policy.IKeyguardDismissCallback;
 import com.android.internal.protolog.common.ProtoLog;
 import com.android.internal.statusbar.IStatusBarService;
+import com.android.internal.telephony.CellBroadcastUtils;
 import com.android.internal.widget.LockPatternUtils;
 import com.android.server.LocalServices;
 import com.android.server.am.ActivityManagerService;
@@ -392,6 +393,10 @@ public class LockTaskController {
             return false;
         }
 
+        if (isWirelessEmergencyAlert(intent)) {
+            return false;
+        }
+
         return !(isTaskAuthAllowlisted(taskAuth) || mLockTaskModeTasks.isEmpty());
     }
 
@@ -424,6 +429,25 @@ public class LockTaskController {
         return isPackageAllowlisted(userId, packageName);
     }
 
+    private boolean isWirelessEmergencyAlert(Intent intent) {
+        if (intent == null) {
+            return false;
+        }
+
+        final ComponentName cellBroadcastAlertDialogComponentName =
+                CellBroadcastUtils.getDefaultCellBroadcastAlertDialogComponent(mContext);
+
+        if (cellBroadcastAlertDialogComponentName == null) {
+            return false;
+        }
+
+        if (cellBroadcastAlertDialogComponentName.equals(intent.getComponent())) {
+            return true;
+        }
+
+        return false;
+    }
+
     private boolean isEmergencyCallIntent(Intent intent) {
         if (intent == null) {
             return false;

services/tests/wmtests/src/com/android/server/wm/LockTaskControllerTest.java

@@ -82,6 +82,7 @@ import android.util.Pair;
 import androidx.test.filters.SmallTest;
 
 import com.android.internal.statusbar.IStatusBarService;
+import com.android.internal.telephony.CellBroadcastUtils;
 import com.android.internal.widget.LockPatternUtils;
 import com.android.server.LocalServices;
 import com.android.server.statusbar.StatusBarManagerInternal;
@@ -296,6 +297,22 @@ public class LockTaskControllerTest {
         assertTrue(mLockTaskController.isLockTaskModeViolation(dialer));
     }
 
+    @Test
+    public void testLockTaskViolation_wirelessEmergencyAlerts() {
+        // GIVEN one task record with allowlisted auth that is in lock task mode
+        Task tr = getTask(LOCK_TASK_AUTH_ALLOWLISTED);
+        mLockTaskController.startLockTaskMode(tr, false, TEST_UID);
+
+        // GIVEN cellbroadcast task necessary for emergency warning alerts
+        Task cellbroadcastreceiver = getTask(
+                new Intent().setComponent(
+                        CellBroadcastUtils.getDefaultCellBroadcastAlertDialogComponent(mContext)),
+                LOCK_TASK_AUTH_PINNABLE);
+
+        // THEN the cellbroadcast task should all be allowed
+        assertFalse(mLockTaskController.isLockTaskModeViolation(cellbroadcastreceiver));
+    }
+
     @Test
     public void testStopLockTaskMode() throws Exception {
         // GIVEN one task record with allowlisted auth that is in lock task mode

telephony/common/com/android/internal/telephony/CellBroadcastUtils.java

@@ -16,6 +16,7 @@
 
 package com.android.internal.telephony;
 
+import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
@@ -62,4 +63,17 @@ public class CellBroadcastUtils {
 
         return packageName;
     }
+
+    /**
+     * Utility method to get cellbroadcast alert dialog component name
+     */
+    public static ComponentName getDefaultCellBroadcastAlertDialogComponent(Context context) {
+        String cellBroadcastReceiverPackageName =
+                getDefaultCellBroadcastReceiverPackageName(context);
+        if (TextUtils.isEmpty(cellBroadcastReceiverPackageName)) {
+            return null;
+        }
+        return ComponentName.createRelative(cellBroadcastReceiverPackageName,
+                "com.android.cellbroadcastreceiver.CellBroadcastAlertDialog");
+    }
 }