| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package com.android.server.connectivity; |
| |
| import static android.Manifest.permission.CHANGE_NETWORK_STATE; |
| import static android.Manifest.permission.CHANGE_WIFI_STATE; |
| import static android.Manifest.permission.CONNECTIVITY_INTERNAL; |
| import static android.Manifest.permission.CONNECTIVITY_USE_RESTRICTED_NETWORKS; |
| import static android.Manifest.permission.NETWORK_STACK; |
| import static android.content.pm.ApplicationInfo.PRIVATE_FLAG_OEM; |
| import static android.content.pm.ApplicationInfo.PRIVATE_FLAG_PRODUCT; |
| import static android.content.pm.ApplicationInfo.PRIVATE_FLAG_VENDOR; |
| import static android.content.pm.PackageManager.GET_PERMISSIONS; |
| import static android.os.Process.SYSTEM_UID; |
| |
| import static com.android.server.connectivity.PermissionMonitor.NETWORK; |
| import static com.android.server.connectivity.PermissionMonitor.SYSTEM; |
| |
| import static junit.framework.Assert.fail; |
| |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| import static org.mockito.ArgumentMatchers.any; |
| import static org.mockito.Matchers.anyString; |
| import static org.mockito.Mockito.anyInt; |
| import static org.mockito.Mockito.doAnswer; |
| import static org.mockito.Mockito.doReturn; |
| import static org.mockito.Mockito.eq; |
| import static org.mockito.Mockito.spy; |
| import static org.mockito.Mockito.when; |
| |
| import android.content.Context; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.PackageInfo; |
| import android.content.pm.PackageManager; |
| import android.os.Build; |
| import android.os.INetworkManagementService; |
| import android.os.UserHandle; |
| import android.support.test.filters.SmallTest; |
| import android.support.test.runner.AndroidJUnit4; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.mockito.Mock; |
| import org.mockito.MockitoAnnotations; |
| import org.mockito.invocation.InvocationOnMock; |
| |
| import java.util.HashMap; |
| |
| @RunWith(AndroidJUnit4.class) |
| @SmallTest |
| public class PermissionMonitorTest { |
| private static final int MOCK_USER1 = 0; |
| private static final int MOCK_USER2 = 1; |
| private static final int MOCK_UID1 = 10001; |
| private static final String MOCK_PACKAGE1 = "appName1"; |
| private static final String SYSTEM_PACKAGE1 = "sysName1"; |
| private static final String SYSTEM_PACKAGE2 = "sysName2"; |
| private static final String PARTITION_SYSTEM = "system"; |
| private static final String PARTITION_OEM = "oem"; |
| private static final String PARTITION_PRODUCT = "product"; |
| private static final String PARTITION_VENDOR = "vendor"; |
| private static final int VERSION_P = Build.VERSION_CODES.P; |
| private static final int VERSION_Q = Build.VERSION_CODES.Q; |
| |
| @Mock private Context mContext; |
| @Mock private PackageManager mPackageManager; |
| @Mock private INetworkManagementService mNMS; |
| |
| private PermissionMonitor mPermissionMonitor; |
| |
| @Before |
| public void setUp() throws Exception { |
| MockitoAnnotations.initMocks(this); |
| when(mContext.getPackageManager()).thenReturn(mPackageManager); |
| mPermissionMonitor = spy(new PermissionMonitor(mContext, mNMS)); |
| } |
| |
| private boolean hasBgPermission(String partition, int targetSdkVersion, int uid, |
| String... permission) throws Exception { |
| final PackageInfo packageInfo = packageInfoWithPermissions(permission, partition); |
| packageInfo.applicationInfo.targetSdkVersion = targetSdkVersion; |
| packageInfo.applicationInfo.uid = uid; |
| when(mPackageManager.getPackageInfoAsUser( |
| eq(MOCK_PACKAGE1), eq(GET_PERMISSIONS), anyInt())).thenReturn(packageInfo); |
| when(mPackageManager.getPackagesForUid(anyInt())).thenReturn(new String[] {MOCK_PACKAGE1}); |
| return mPermissionMonitor.hasUseBackgroundNetworksPermission(uid); |
| } |
| |
| private PackageInfo packageInfoWithPermissions(String[] permissions, String partition) { |
| final PackageInfo packageInfo = new PackageInfo(); |
| packageInfo.requestedPermissions = permissions; |
| packageInfo.applicationInfo = new ApplicationInfo(); |
| int privateFlags = 0; |
| switch (partition) { |
| case PARTITION_OEM: |
| privateFlags = PRIVATE_FLAG_OEM; |
| break; |
| case PARTITION_PRODUCT: |
| privateFlags = PRIVATE_FLAG_PRODUCT; |
| break; |
| case PARTITION_VENDOR: |
| privateFlags = PRIVATE_FLAG_VENDOR; |
| break; |
| } |
| packageInfo.applicationInfo.privateFlags = privateFlags; |
| return packageInfo; |
| } |
| |
| @Test |
| public void testHasPermission() { |
| PackageInfo app = packageInfoWithPermissions(new String[] {}, PARTITION_SYSTEM); |
| assertFalse(mPermissionMonitor.hasPermission(app, CHANGE_NETWORK_STATE)); |
| assertFalse(mPermissionMonitor.hasPermission(app, NETWORK_STACK)); |
| assertFalse(mPermissionMonitor.hasPermission(app, CONNECTIVITY_USE_RESTRICTED_NETWORKS)); |
| assertFalse(mPermissionMonitor.hasPermission(app, CONNECTIVITY_INTERNAL)); |
| |
| app = packageInfoWithPermissions(new String[] { |
| CHANGE_NETWORK_STATE, NETWORK_STACK |
| }, PARTITION_SYSTEM); |
| assertTrue(mPermissionMonitor.hasPermission(app, CHANGE_NETWORK_STATE)); |
| assertTrue(mPermissionMonitor.hasPermission(app, NETWORK_STACK)); |
| assertFalse(mPermissionMonitor.hasPermission(app, CONNECTIVITY_USE_RESTRICTED_NETWORKS)); |
| assertFalse(mPermissionMonitor.hasPermission(app, CONNECTIVITY_INTERNAL)); |
| |
| app = packageInfoWithPermissions(new String[] { |
| CONNECTIVITY_USE_RESTRICTED_NETWORKS, CONNECTIVITY_INTERNAL |
| }, PARTITION_SYSTEM); |
| assertFalse(mPermissionMonitor.hasPermission(app, CHANGE_NETWORK_STATE)); |
| assertFalse(mPermissionMonitor.hasPermission(app, NETWORK_STACK)); |
| assertTrue(mPermissionMonitor.hasPermission(app, CONNECTIVITY_USE_RESTRICTED_NETWORKS)); |
| assertTrue(mPermissionMonitor.hasPermission(app, CONNECTIVITY_INTERNAL)); |
| } |
| |
| @Test |
| public void testIsVendorApp() { |
| PackageInfo app = packageInfoWithPermissions(new String[] {}, PARTITION_SYSTEM); |
| assertFalse(mPermissionMonitor.isVendorApp(app.applicationInfo)); |
| app = packageInfoWithPermissions(new String[] {}, PARTITION_OEM); |
| assertTrue(mPermissionMonitor.isVendorApp(app.applicationInfo)); |
| app = packageInfoWithPermissions(new String[] {}, PARTITION_PRODUCT); |
| assertTrue(mPermissionMonitor.isVendorApp(app.applicationInfo)); |
| app = packageInfoWithPermissions(new String[] {}, PARTITION_VENDOR); |
| assertTrue(mPermissionMonitor.isVendorApp(app.applicationInfo)); |
| } |
| |
| @Test |
| public void testHasUseBackgroundNetworksPermission() throws Exception { |
| assertFalse(hasBgPermission(PARTITION_SYSTEM, VERSION_P, MOCK_UID1)); |
| assertTrue(hasBgPermission(PARTITION_SYSTEM, VERSION_P, MOCK_UID1, CHANGE_NETWORK_STATE)); |
| assertTrue(hasBgPermission(PARTITION_SYSTEM, VERSION_P, MOCK_UID1, NETWORK_STACK)); |
| assertTrue(hasBgPermission(PARTITION_SYSTEM, VERSION_P, MOCK_UID1, CONNECTIVITY_INTERNAL)); |
| assertTrue(hasBgPermission(PARTITION_SYSTEM, VERSION_P, MOCK_UID1, |
| CONNECTIVITY_USE_RESTRICTED_NETWORKS)); |
| assertFalse(hasBgPermission(PARTITION_SYSTEM, VERSION_P, MOCK_UID1, CHANGE_WIFI_STATE)); |
| |
| assertFalse(hasBgPermission(PARTITION_SYSTEM, VERSION_Q, MOCK_UID1)); |
| assertFalse(hasBgPermission(PARTITION_SYSTEM, VERSION_Q, MOCK_UID1, CHANGE_WIFI_STATE)); |
| } |
| |
| @Test |
| public void testHasUseBackgroundNetworksPermissionSystemUid() throws Exception { |
| doReturn(VERSION_P).when(mPermissionMonitor).getDeviceFirstSdkInt(); |
| assertTrue(hasBgPermission(PARTITION_SYSTEM, VERSION_P, SYSTEM_UID)); |
| assertTrue(hasBgPermission(PARTITION_SYSTEM, VERSION_P, SYSTEM_UID, CHANGE_WIFI_STATE)); |
| assertTrue(hasBgPermission(PARTITION_SYSTEM, VERSION_P, SYSTEM_UID, |
| CONNECTIVITY_USE_RESTRICTED_NETWORKS)); |
| |
| doReturn(VERSION_Q).when(mPermissionMonitor).getDeviceFirstSdkInt(); |
| assertFalse(hasBgPermission(PARTITION_SYSTEM, VERSION_Q, SYSTEM_UID)); |
| assertFalse(hasBgPermission(PARTITION_SYSTEM, VERSION_Q, SYSTEM_UID, CHANGE_WIFI_STATE)); |
| assertTrue(hasBgPermission(PARTITION_SYSTEM, VERSION_Q, SYSTEM_UID, |
| CONNECTIVITY_USE_RESTRICTED_NETWORKS)); |
| } |
| |
| @Test |
| public void testHasUseBackgroundNetworksPermissionVendorApp() throws Exception { |
| assertTrue(hasBgPermission(PARTITION_VENDOR, VERSION_P, MOCK_UID1)); |
| assertTrue(hasBgPermission(PARTITION_VENDOR, VERSION_P, MOCK_UID1, CHANGE_NETWORK_STATE)); |
| assertTrue(hasBgPermission(PARTITION_VENDOR, VERSION_P, MOCK_UID1, NETWORK_STACK)); |
| assertTrue(hasBgPermission(PARTITION_VENDOR, VERSION_P, MOCK_UID1, CONNECTIVITY_INTERNAL)); |
| assertTrue(hasBgPermission(PARTITION_VENDOR, VERSION_P, MOCK_UID1, |
| CONNECTIVITY_USE_RESTRICTED_NETWORKS)); |
| assertTrue(hasBgPermission(PARTITION_VENDOR, VERSION_P, MOCK_UID1, CHANGE_WIFI_STATE)); |
| |
| assertFalse(hasBgPermission(PARTITION_VENDOR, VERSION_Q, MOCK_UID1)); |
| assertFalse(hasBgPermission(PARTITION_VENDOR, VERSION_Q, MOCK_UID1, CHANGE_WIFI_STATE)); |
| } |
| |
| private class NMSMonitor { |
| private final HashMap<Integer, Boolean> mApps = new HashMap<>(); |
| |
| NMSMonitor(INetworkManagementService mockNMS) throws Exception { |
| // Add hook to verify and track result of setPermission. |
| doAnswer((InvocationOnMock invocation) -> { |
| final Object[] args = invocation.getArguments(); |
| final Boolean isSystem = args[0].equals("SYSTEM"); |
| for (final int uid : (int[]) args[1]) { |
| // TODO: Currently, permission monitor will send duplicate commands for each uid |
| // corresponding to each user. Need to fix that and uncomment below test. |
| // if (mApps.containsKey(uid) && mApps.get(uid) == isSystem) { |
| // fail("uid " + uid + " is already set to " + isSystem); |
| // } |
| mApps.put(uid, isSystem); |
| } |
| return null; |
| }).when(mockNMS).setPermission(anyString(), any(int[].class)); |
| |
| // Add hook to verify and track result of clearPermission. |
| doAnswer((InvocationOnMock invocation) -> { |
| final Object[] args = invocation.getArguments(); |
| for (final int uid : (int[]) args[0]) { |
| // TODO: Currently, permission monitor will send duplicate commands for each uid |
| // corresponding to each user. Need to fix that and uncomment below test. |
| // if (!mApps.containsKey(uid)) { |
| // fail("uid " + uid + " does not exist."); |
| // } |
| mApps.remove(uid); |
| } |
| return null; |
| }).when(mockNMS).clearPermission(any(int[].class)); |
| } |
| |
| public void expectPermission(Boolean permission, int[] users, int[] apps) { |
| for (final int user : users) { |
| for (final int app : apps) { |
| final int uid = UserHandle.getUid(user, app); |
| if (!mApps.containsKey(uid)) { |
| fail("uid " + uid + " does not exist."); |
| } |
| if (mApps.get(uid) != permission) { |
| fail("uid " + uid + " has wrong permission: " + permission); |
| } |
| } |
| } |
| } |
| |
| public void expectNoPermission(int[] users, int[] apps) { |
| for (final int user : users) { |
| for (final int app : apps) { |
| final int uid = UserHandle.getUid(user, app); |
| if (mApps.containsKey(uid)) { |
| fail("uid " + uid + " has listed permissions, expected none."); |
| } |
| } |
| } |
| } |
| } |
| |
| @Test |
| public void testUserAndPackageAddRemove() throws Exception { |
| final NMSMonitor mNMSMonitor = new NMSMonitor(mNMS); |
| |
| // MOCK_UID1: MOCK_PACKAGE1 only has network permission. |
| // SYSTEM_UID: SYSTEM_PACKAGE1 has system permission. |
| // SYSTEM_UID: SYSTEM_PACKAGE2 only has network permission. |
| doReturn(SYSTEM).when(mPermissionMonitor).highestPermissionForUid(eq(SYSTEM), anyString()); |
| doReturn(SYSTEM).when(mPermissionMonitor).highestPermissionForUid(any(), |
| eq(SYSTEM_PACKAGE1)); |
| doReturn(NETWORK).when(mPermissionMonitor).highestPermissionForUid(any(), |
| eq(SYSTEM_PACKAGE2)); |
| doReturn(NETWORK).when(mPermissionMonitor).highestPermissionForUid(any(), |
| eq(MOCK_PACKAGE1)); |
| |
| // Add SYSTEM_PACKAGE2, expect only have network permission. |
| mPermissionMonitor.onUserAdded(MOCK_USER1); |
| addPackageForUsers(new int[]{MOCK_USER1}, SYSTEM_PACKAGE2, SYSTEM_UID); |
| mNMSMonitor.expectPermission(NETWORK, new int[]{MOCK_USER1}, new int[]{SYSTEM_UID}); |
| |
| // Add SYSTEM_PACKAGE1, expect permission escalate. |
| addPackageForUsers(new int[]{MOCK_USER1}, SYSTEM_PACKAGE1, SYSTEM_UID); |
| mNMSMonitor.expectPermission(SYSTEM, new int[]{MOCK_USER1}, new int[]{SYSTEM_UID}); |
| |
| mPermissionMonitor.onUserAdded(MOCK_USER2); |
| mNMSMonitor.expectPermission(SYSTEM, new int[]{MOCK_USER1, MOCK_USER2}, |
| new int[]{SYSTEM_UID}); |
| |
| addPackageForUsers(new int[]{MOCK_USER1, MOCK_USER2}, MOCK_PACKAGE1, MOCK_UID1); |
| mNMSMonitor.expectPermission(SYSTEM, new int[]{MOCK_USER1, MOCK_USER2}, |
| new int[]{SYSTEM_UID}); |
| mNMSMonitor.expectPermission(NETWORK, new int[]{MOCK_USER1, MOCK_USER2}, |
| new int[]{MOCK_UID1}); |
| |
| // Remove MOCK_UID1, expect no permission left for all user. |
| mPermissionMonitor.onPackageRemoved(MOCK_UID1); |
| removePackageForUsers(new int[]{MOCK_USER1, MOCK_USER2}, MOCK_UID1); |
| mNMSMonitor.expectNoPermission(new int[]{MOCK_USER1, MOCK_USER2}, new int[]{MOCK_UID1}); |
| |
| // Remove SYSTEM_PACKAGE1, expect permission downgrade. |
| when(mPackageManager.getPackagesForUid(anyInt())).thenReturn(new String[]{SYSTEM_PACKAGE2}); |
| removePackageForUsers(new int[]{MOCK_USER1, MOCK_USER2}, SYSTEM_UID); |
| mNMSMonitor.expectPermission(NETWORK, new int[]{MOCK_USER1, MOCK_USER2}, |
| new int[]{SYSTEM_UID}); |
| |
| mPermissionMonitor.onUserRemoved(MOCK_USER1); |
| mNMSMonitor.expectPermission(NETWORK, new int[]{MOCK_USER2}, new int[]{SYSTEM_UID}); |
| |
| // Remove all packages, expect no permission left. |
| when(mPackageManager.getPackagesForUid(anyInt())).thenReturn(new String[]{}); |
| removePackageForUsers(new int[]{MOCK_USER2}, SYSTEM_UID); |
| mNMSMonitor.expectNoPermission(new int[]{MOCK_USER1, MOCK_USER2}, |
| new int[]{SYSTEM_UID, MOCK_UID1}); |
| |
| // Remove last user, expect no redundant clearPermission is invoked. |
| mPermissionMonitor.onUserRemoved(MOCK_USER2); |
| mNMSMonitor.expectNoPermission(new int[]{MOCK_USER1, MOCK_USER2}, |
| new int[]{SYSTEM_UID, MOCK_UID1}); |
| } |
| |
| // Normal package add/remove operations will trigger multiple intent for uids corresponding to |
| // each user. To simulate generic package operations, the onPackageAdded/Removed will need to be |
| // called multiple times with the uid corresponding to each user. |
| private void addPackageForUsers(int[] users, String packageName, int uid) { |
| for (final int user : users) { |
| mPermissionMonitor.onPackageAdded(packageName, UserHandle.getUid(user, uid)); |
| } |
| } |
| |
| private void removePackageForUsers(int[] users, int uid) { |
| for (final int user : users) { |
| mPermissionMonitor.onPackageRemoved(UserHandle.getUid(user, uid)); |
| } |
| } |
| } |