1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.cts.duplicatepermissiondeclareapp; 18 19 import static android.content.pm.PackageManager.GET_PERMISSIONS; 20 21 import static org.junit.Assert.assertEquals; 22 23 import android.content.pm.PackageManager; 24 import android.content.pm.PermissionInfo; 25 26 import androidx.test.InstrumentationRegistry; 27 import androidx.test.runner.AndroidJUnit4; 28 29 import org.junit.Test; 30 import org.junit.runner.RunWith; 31 32 @RunWith(AndroidJUnit4.class) 33 public class VerifyDuplicatePermissionTest { 34 private final static String APP_THAT_WAS_INSTALLED_FIRST = 35 "com.android.cts.permissiondeclareapp"; 36 private final static String APP_THAT_WAS_INSTALLED_AFTER = 37 "com.android.cts.duplicatepermissiondeclareapp"; 38 private final static String PERM = "com.android.cts.permissionNormal"; 39 40 private final static PackageManager sPm = 41 InstrumentationRegistry.getTargetContext().getPackageManager(); 42 getDeclaredPermission(String pkg, String permission)43 private PermissionInfo getDeclaredPermission(String pkg, String permission) throws Exception { 44 for (PermissionInfo permInfo : sPm.getPackageInfo(pkg, GET_PERMISSIONS).permissions) { 45 if (permInfo.name.equals(permission)) { 46 return permInfo; 47 } 48 } 49 50 return null; 51 } 52 53 @Test verifyDuplicatePermission()54 public void verifyDuplicatePermission() throws Exception { 55 // The other app was first. The second app could not steal the permission. Hence the 56 // permission belongs to the first app. 57 assertEquals(APP_THAT_WAS_INSTALLED_FIRST, sPm.getPermissionInfo(PERM, 0).packageName); 58 59 // The first app declared the permission 60 assertEquals(APP_THAT_WAS_INSTALLED_FIRST, 61 getDeclaredPermission(APP_THAT_WAS_INSTALLED_FIRST, PERM).packageName); 62 63 // The second app declared the permission too, but the permission is owned by first app. 64 // Hence we end up with a permission info that is different from the one read from the 65 // system. 66 assertEquals(APP_THAT_WAS_INSTALLED_AFTER, 67 getDeclaredPermission(APP_THAT_WAS_INSTALLED_AFTER, PERM).packageName); 68 } 69 } 70