[CDM][NLS] Check if the NLS service has an intent-filter am: e4fe2f5b81

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/29711106

Change-Id: I396f1b0749acfad5300f706e62c97a6f136119b3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

src/com/android/settings/notification/NotificationAccessConfirmationActivity.java

@@ -31,13 +31,15 @@ import android.app.admin.DevicePolicyManager;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.DialogInterface;
+import android.content.Intent;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageItemInfo;
 import android.content.pm.PackageManager;
-import android.content.pm.ServiceInfo;
+import android.content.pm.ResolveInfo;
 import android.os.Bundle;
 import android.os.UserHandle;
 import android.os.UserManager;
+import android.service.notification.NotificationListenerService;
 import android.text.TextUtils;
 import android.util.Slog;
 import android.view.WindowManager;
@@ -48,6 +50,8 @@ import com.android.internal.app.AlertActivity;
 import com.android.internal.app.AlertController;
 import com.android.settings.R;
 
+import java.util.List;
+
 /** @hide */
 public class NotificationAccessConfirmationActivity extends Activity
         implements DialogInterface {
@@ -112,6 +116,31 @@ public class NotificationAccessConfirmationActivity extends Activity
             return;
         }
 
+        // Check NLS service info.
+        String requiredPermission = Manifest.permission.BIND_NOTIFICATION_LISTENER_SERVICE;
+        Intent NLSIntent = new Intent(NotificationListenerService.SERVICE_INTERFACE);
+        List<ResolveInfo> matchedServiceList = getPackageManager().queryIntentServicesAsUser(
+                NLSIntent, /* flags */ 0, mUserId);
+        boolean hasNLSIntentFilter = false;
+        for (ResolveInfo service : matchedServiceList) {
+            if (service.serviceInfo.packageName.equals(mComponentName.getPackageName())) {
+                if (!requiredPermission.equals(service.serviceInfo.permission)) {
+                    Slog.e(LOG_TAG, "Service " + mComponentName + " lacks permission "
+                            + requiredPermission);
+                    finish();
+                    return;
+                }
+                hasNLSIntentFilter = true;
+                break;
+            }
+        }
+        if (!hasNLSIntentFilter) {
+            Slog.e(LOG_TAG, "Service " + mComponentName + " lacks an intent-filter action "
+                    + "for android.service.notification.NotificationListenerService.");
+            finish();
+            return;
+        }
+
         AlertController.AlertParams p = new AlertController.AlertParams(this);
         p.mTitle = getString(
                 R.string.notification_listener_security_warning_title,
@@ -146,19 +175,6 @@ public class NotificationAccessConfirmationActivity extends Activity
     }
 
     private void onAllow() {
-        String requiredPermission = Manifest.permission.BIND_NOTIFICATION_LISTENER_SERVICE;
-        try {
-            ServiceInfo serviceInfo = getPackageManager().getServiceInfo(mComponentName, 0);
-            if (!requiredPermission.equals(serviceInfo.permission)) {
-                Slog.e(LOG_TAG,
-                        "Service " + mComponentName + " lacks permission " + requiredPermission);
-                return;
-            }
-        } catch (PackageManager.NameNotFoundException e) {
-            Slog.e(LOG_TAG, "Failed to get service info for " + mComponentName, e);
-            return;
-        }
-
         mNm.setNotificationListenerAccessGranted(mComponentName, true);
 
         finish();
@@ -169,12 +185,6 @@ public class NotificationAccessConfirmationActivity extends Activity
         return AlertActivity.dispatchPopulateAccessibilityEvent(this, event);
     }
 
-    @Override
-    public void onBackPressed() {
-        // Suppress finishing the activity on back button press,
-        // consistently with the permission dialog behavior
-    }
-
     @Override
     public void cancel() {
         finish();

tests/robotests/src/com/android/settings/notification/NotificationAccessConfirmationActivityTest.java

@@ -30,8 +30,6 @@ import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageInfo;
 import android.widget.TextView;
 
-import com.android.settings.R;
-
 import com.google.common.base.Strings;
 
 import org.junit.Test;
@@ -44,15 +42,14 @@ import org.robolectric.RuntimeEnvironment;
 public class NotificationAccessConfirmationActivityTest {
 
     @Test
-    public void start_showsDialog() {
+    public void start_withMissingIntentFilter_finishes() {
         ComponentName cn = new ComponentName("com.example", "com.example.SomeService");
         installPackage(cn.getPackageName(), "X");
 
         NotificationAccessConfirmationActivity activity = startActivityWithIntent(cn);
 
-        assertThat(activity.isFinishing()).isFalse();
+        assertThat(getDialogText(activity)).isNull();
-        assertThat(getDialogText(activity)).isEqualTo(
+        assertThat(activity.isFinishing()).isTrue();
-                activity.getString(R.string.notification_listener_security_warning_summary, "X"));
     }
 
     @Test