| /* |
| * 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.INTERNET; |
| import static android.Manifest.permission.NETWORK_STACK; |
| import static android.Manifest.permission.UPDATE_DEVICE_STATS; |
| 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.PackageInfo.REQUESTED_PERMISSION_GRANTED; |
| import static android.content.pm.PackageManager.GET_PERMISSIONS; |
| import static android.content.pm.PackageManager.MATCH_ANY_USER; |
| 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.assertNull; |
| import static org.junit.Assert.assertTrue; |
| import static org.mockito.AdditionalMatchers.aryEq; |
| import static org.mockito.ArgumentMatchers.any; |
| import static org.mockito.ArgumentMatchers.anyInt; |
| import static org.mockito.ArgumentMatchers.anyString; |
| import static org.mockito.ArgumentMatchers.eq; |
| import static org.mockito.Mockito.doAnswer; |
| import static org.mockito.Mockito.doReturn; |
| import static org.mockito.Mockito.reset; |
| import static org.mockito.Mockito.spy; |
| import static org.mockito.Mockito.verify; |
| import static org.mockito.Mockito.when; |
| |
| import android.content.Context; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.PackageInfo; |
| import android.content.pm.PackageList; |
| import android.content.pm.PackageManager; |
| import android.content.pm.PackageManagerInternal; |
| import android.content.pm.UserInfo; |
| import android.net.INetd; |
| import android.net.UidRange; |
| import android.os.Build; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.util.SparseIntArray; |
| |
| import androidx.test.InstrumentationRegistry; |
| import androidx.test.filters.SmallTest; |
| import androidx.test.runner.AndroidJUnit4; |
| |
| import com.android.server.LocalServices; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.mockito.ArgumentCaptor; |
| import org.mockito.Mock; |
| import org.mockito.MockitoAnnotations; |
| import org.mockito.invocation.InvocationOnMock; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| |
| @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 int MOCK_UID2 = 10086; |
| private static final int SYSTEM_UID1 = 1000; |
| private static final int SYSTEM_UID2 = 1008; |
| private static final int VPN_UID = 10002; |
| private static final String REAL_SYSTEM_PACKAGE_NAME = "android"; |
| private static final String MOCK_PACKAGE1 = "appName1"; |
| private static final String MOCK_PACKAGE2 = "appName2"; |
| private static final String SYSTEM_PACKAGE1 = "sysName1"; |
| private static final String SYSTEM_PACKAGE2 = "sysName2"; |
| private static final String VPN_PACKAGE = "vpnApp"; |
| 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 INetd mNetdService; |
| @Mock private PackageManagerInternal mMockPmi; |
| @Mock private UserManager mUserManager; |
| |
| private PackageManagerInternal.PackageListObserver mObserver; |
| private PermissionMonitor mPermissionMonitor; |
| |
| @Before |
| public void setUp() throws Exception { |
| MockitoAnnotations.initMocks(this); |
| when(mContext.getPackageManager()).thenReturn(mPackageManager); |
| when(mContext.getSystemService(eq(Context.USER_SERVICE))).thenReturn(mUserManager); |
| when(mUserManager.getUsers(eq(true))).thenReturn( |
| Arrays.asList(new UserInfo[] { |
| new UserInfo(MOCK_USER1, "", 0), |
| new UserInfo(MOCK_USER2, "", 0), |
| })); |
| |
| mPermissionMonitor = spy(new PermissionMonitor(mContext, mNetdService)); |
| |
| LocalServices.removeServiceForTest(PackageManagerInternal.class); |
| LocalServices.addService(PackageManagerInternal.class, mMockPmi); |
| when(mMockPmi.getPackageList(any())).thenReturn(new PackageList(new ArrayList<String>(), |
| /* observer */ null)); |
| when(mPackageManager.getInstalledPackages(anyInt())).thenReturn(/* empty app list */ null); |
| mPermissionMonitor.startMonitoring(); |
| |
| final ArgumentCaptor<PackageManagerInternal.PackageListObserver> observerCaptor = |
| ArgumentCaptor.forClass(PackageManagerInternal.PackageListObserver.class); |
| verify(mMockPmi).getPackageList(observerCaptor.capture()); |
| mObserver = observerCaptor.getValue(); |
| } |
| |
| 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 static PackageInfo packageInfoWithPermissions(String[] permissions, String partition) { |
| int[] requestedPermissionsFlags = new int[permissions.length]; |
| for (int i = 0; i < permissions.length; i++) { |
| requestedPermissionsFlags[i] = REQUESTED_PERMISSION_GRANTED; |
| } |
| return packageInfoWithPermissions(permissions, partition, |
| requestedPermissionsFlags); |
| } |
| |
| private static PackageInfo packageInfoWithPermissions(String[] permissions, String partition, |
| int[] requestedPermissionsFlags) { |
| final PackageInfo packageInfo = new PackageInfo(); |
| packageInfo.requestedPermissions = permissions; |
| packageInfo.applicationInfo = new ApplicationInfo(); |
| packageInfo.requestedPermissionsFlags = requestedPermissionsFlags; |
| 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; |
| } |
| |
| private static PackageInfo buildPackageInfo(boolean hasSystemPermission, int uid, int userId) { |
| final PackageInfo pkgInfo; |
| if (hasSystemPermission) { |
| final String[] systemPermissions = new String[]{ |
| CHANGE_NETWORK_STATE, NETWORK_STACK, CONNECTIVITY_USE_RESTRICTED_NETWORKS |
| }; |
| pkgInfo = packageInfoWithPermissions(systemPermissions, PARTITION_SYSTEM); |
| } else { |
| pkgInfo = packageInfoWithPermissions(new String[] {}, ""); |
| } |
| pkgInfo.applicationInfo.uid = UserHandle.getUid(userId, UserHandle.getAppId(uid)); |
| return pkgInfo; |
| } |
| |
| @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 NetdMonitor { |
| private final HashMap<Integer, Boolean> mApps = new HashMap<>(); |
| |
| NetdMonitor(INetd mockNetd) 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(INetd.PERMISSION_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(mockNetd).networkSetPermissionForUser(anyInt(), 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(mockNetd).networkClearPermissionForUser(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 NetdMonitor mNetdMonitor = new NetdMonitor(mNetdService); |
| |
| // 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); |
| mNetdMonitor.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); |
| mNetdMonitor.expectPermission(SYSTEM, new int[]{MOCK_USER1}, new int[]{SYSTEM_UID}); |
| |
| mPermissionMonitor.onUserAdded(MOCK_USER2); |
| mNetdMonitor.expectPermission(SYSTEM, new int[]{MOCK_USER1, MOCK_USER2}, |
| new int[]{SYSTEM_UID}); |
| |
| addPackageForUsers(new int[]{MOCK_USER1, MOCK_USER2}, MOCK_PACKAGE1, MOCK_UID1); |
| mNetdMonitor.expectPermission(SYSTEM, new int[]{MOCK_USER1, MOCK_USER2}, |
| new int[]{SYSTEM_UID}); |
| mNetdMonitor.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); |
| mNetdMonitor.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); |
| mNetdMonitor.expectPermission(NETWORK, new int[]{MOCK_USER1, MOCK_USER2}, |
| new int[]{SYSTEM_UID}); |
| |
| mPermissionMonitor.onUserRemoved(MOCK_USER1); |
| mNetdMonitor.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); |
| mNetdMonitor.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); |
| mNetdMonitor.expectNoPermission(new int[]{MOCK_USER1, MOCK_USER2}, |
| new int[]{SYSTEM_UID, MOCK_UID1}); |
| } |
| |
| @Test |
| public void testUidFilteringDuringVpnConnectDisconnectAndUidUpdates() throws Exception { |
| when(mPackageManager.getInstalledPackages(eq(GET_PERMISSIONS | MATCH_ANY_USER))).thenReturn( |
| Arrays.asList(new PackageInfo[] { |
| buildPackageInfo(/* SYSTEM */ true, SYSTEM_UID1, MOCK_USER1), |
| buildPackageInfo(/* SYSTEM */ false, MOCK_UID1, MOCK_USER1), |
| buildPackageInfo(/* SYSTEM */ false, MOCK_UID2, MOCK_USER1), |
| buildPackageInfo(/* SYSTEM */ false, VPN_UID, MOCK_USER1) |
| })); |
| when(mPackageManager.getPackageInfo(eq(MOCK_PACKAGE1), eq(GET_PERMISSIONS))).thenReturn( |
| buildPackageInfo(false, MOCK_UID1, MOCK_USER1)); |
| mPermissionMonitor.startMonitoring(); |
| // Every app on user 0 except MOCK_UID2 are under VPN. |
| final Set<UidRange> vpnRange1 = new HashSet<>(Arrays.asList(new UidRange[] { |
| new UidRange(0, MOCK_UID2 - 1), |
| new UidRange(MOCK_UID2 + 1, UserHandle.PER_USER_RANGE - 1)})); |
| final Set<UidRange> vpnRange2 = Collections.singleton(new UidRange(MOCK_UID2, MOCK_UID2)); |
| |
| // When VPN is connected, expect a rule to be set up for user app MOCK_UID1 |
| mPermissionMonitor.onVpnUidRangesAdded("tun0", vpnRange1, VPN_UID); |
| verify(mNetdService).firewallAddUidInterfaceRules(eq("tun0"), |
| aryEq(new int[] {MOCK_UID1})); |
| |
| reset(mNetdService); |
| |
| // When MOCK_UID1 package is uninstalled and reinstalled, expect Netd to be updated |
| mPermissionMonitor.onPackageRemoved(UserHandle.getUid(MOCK_USER1, MOCK_UID1)); |
| verify(mNetdService).firewallRemoveUidInterfaceRules(aryEq(new int[] {MOCK_UID1})); |
| mPermissionMonitor.onPackageAdded(MOCK_PACKAGE1, UserHandle.getUid(MOCK_USER1, MOCK_UID1)); |
| verify(mNetdService).firewallAddUidInterfaceRules(eq("tun0"), |
| aryEq(new int[] {MOCK_UID1})); |
| |
| reset(mNetdService); |
| |
| // During VPN uid update (vpnRange1 -> vpnRange2), ConnectivityService first deletes the |
| // old UID rules then adds the new ones. Expect netd to be updated |
| mPermissionMonitor.onVpnUidRangesRemoved("tun0", vpnRange1, VPN_UID); |
| verify(mNetdService).firewallRemoveUidInterfaceRules(aryEq(new int[] {MOCK_UID1})); |
| mPermissionMonitor.onVpnUidRangesAdded("tun0", vpnRange2, VPN_UID); |
| verify(mNetdService).firewallAddUidInterfaceRules(eq("tun0"), |
| aryEq(new int[] {MOCK_UID2})); |
| |
| reset(mNetdService); |
| |
| // When VPN is disconnected, expect rules to be torn down |
| mPermissionMonitor.onVpnUidRangesRemoved("tun0", vpnRange2, VPN_UID); |
| verify(mNetdService).firewallRemoveUidInterfaceRules(aryEq(new int[] {MOCK_UID2})); |
| assertNull(mPermissionMonitor.getVpnUidRanges("tun0")); |
| } |
| |
| @Test |
| public void testUidFilteringDuringPackageInstallAndUninstall() throws Exception { |
| when(mPackageManager.getInstalledPackages(eq(GET_PERMISSIONS | MATCH_ANY_USER))).thenReturn( |
| Arrays.asList(new PackageInfo[] { |
| buildPackageInfo(true, SYSTEM_UID1, MOCK_USER1), |
| buildPackageInfo(false, VPN_UID, MOCK_USER1) |
| })); |
| when(mPackageManager.getPackageInfo(eq(MOCK_PACKAGE1), eq(GET_PERMISSIONS))).thenReturn( |
| buildPackageInfo(false, MOCK_UID1, MOCK_USER1)); |
| |
| mPermissionMonitor.startMonitoring(); |
| final Set<UidRange> vpnRange = Collections.singleton(UidRange.createForUser(MOCK_USER1)); |
| mPermissionMonitor.onVpnUidRangesAdded("tun0", vpnRange, VPN_UID); |
| |
| // Newly-installed package should have uid rules added |
| mPermissionMonitor.onPackageAdded(MOCK_PACKAGE1, UserHandle.getUid(MOCK_USER1, MOCK_UID1)); |
| verify(mNetdService).firewallAddUidInterfaceRules(eq("tun0"), |
| aryEq(new int[] {MOCK_UID1})); |
| |
| // Removed package should have its uid rules removed |
| mPermissionMonitor.onPackageRemoved(UserHandle.getUid(MOCK_USER1, MOCK_UID1)); |
| verify(mNetdService).firewallRemoveUidInterfaceRules(aryEq(new int[] {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)); |
| } |
| } |
| |
| private class NetdServiceMonitor { |
| private final HashMap<Integer, Integer> mPermissions = new HashMap<>(); |
| |
| NetdServiceMonitor(INetd mockNetdService) throws Exception { |
| // Add hook to verify and track result of setPermission. |
| doAnswer((InvocationOnMock invocation) -> { |
| final Object[] args = invocation.getArguments(); |
| final int permission = (int) args[0]; |
| for (final int uid : (int[]) args[1]) { |
| mPermissions.put(uid, permission); |
| } |
| return null; |
| }).when(mockNetdService).trafficSetNetPermForUids(anyInt(), any(int[].class)); |
| } |
| |
| public void expectPermission(int permission, int[] apps) { |
| for (final int app : apps) { |
| if (!mPermissions.containsKey(app)) { |
| fail("uid " + app + " does not exist."); |
| } |
| if (mPermissions.get(app) != permission) { |
| fail("uid " + app + " has wrong permission: " + mPermissions.get(app)); |
| } |
| } |
| } |
| } |
| |
| @Test |
| public void testPackagePermissionUpdate() throws Exception { |
| final NetdServiceMonitor mNetdServiceMonitor = new NetdServiceMonitor(mNetdService); |
| // MOCK_UID1: MOCK_PACKAGE1 only has internet permission. |
| // MOCK_UID2: MOCK_PACKAGE2 does not have any permission. |
| // SYSTEM_UID1: SYSTEM_PACKAGE1 has internet permission and update device stats permission. |
| // SYSTEM_UID2: SYSTEM_PACKAGE2 has only update device stats permission. |
| |
| SparseIntArray netdPermissionsAppIds = new SparseIntArray(); |
| netdPermissionsAppIds.put(MOCK_UID1, INetd.PERMISSION_INTERNET); |
| netdPermissionsAppIds.put(MOCK_UID2, INetd.PERMISSION_NONE); |
| netdPermissionsAppIds.put(SYSTEM_UID1, INetd.PERMISSION_INTERNET |
| | INetd.PERMISSION_UPDATE_DEVICE_STATS); |
| netdPermissionsAppIds.put(SYSTEM_UID2, INetd.PERMISSION_UPDATE_DEVICE_STATS); |
| |
| // Send the permission information to netd, expect permission updated. |
| mPermissionMonitor.sendPackagePermissionsToNetd(netdPermissionsAppIds); |
| |
| mNetdServiceMonitor.expectPermission(INetd.PERMISSION_INTERNET, |
| new int[]{MOCK_UID1}); |
| mNetdServiceMonitor.expectPermission(INetd.PERMISSION_NONE, new int[]{MOCK_UID2}); |
| mNetdServiceMonitor.expectPermission(INetd.PERMISSION_INTERNET |
| | INetd.PERMISSION_UPDATE_DEVICE_STATS, new int[]{SYSTEM_UID1}); |
| mNetdServiceMonitor.expectPermission(INetd.PERMISSION_UPDATE_DEVICE_STATS, |
| new int[]{SYSTEM_UID2}); |
| |
| // Update permission of MOCK_UID1, expect new permission show up. |
| mPermissionMonitor.sendPackagePermissionsForUid(MOCK_UID1, |
| INetd.PERMISSION_INTERNET | INetd.PERMISSION_UPDATE_DEVICE_STATS); |
| mNetdServiceMonitor.expectPermission(INetd.PERMISSION_INTERNET |
| | INetd.PERMISSION_UPDATE_DEVICE_STATS, new int[]{MOCK_UID1}); |
| |
| // Change permissions of SYSTEM_UID2, expect new permission show up and old permission |
| // revoked. |
| mPermissionMonitor.sendPackagePermissionsForUid(SYSTEM_UID2, |
| INetd.PERMISSION_INTERNET); |
| mNetdServiceMonitor.expectPermission(INetd.PERMISSION_INTERNET, new int[]{SYSTEM_UID2}); |
| |
| // Revoke permission from SYSTEM_UID1, expect no permission stored. |
| mPermissionMonitor.sendPackagePermissionsForUid(SYSTEM_UID1, INetd.PERMISSION_NONE); |
| mNetdServiceMonitor.expectPermission(INetd.PERMISSION_NONE, new int[]{SYSTEM_UID1}); |
| } |
| |
| private PackageInfo addPackage(String packageName, int uid, String[] permissions) |
| throws Exception { |
| PackageInfo packageInfo = packageInfoWithPermissions(permissions, PARTITION_SYSTEM); |
| when(mPackageManager.getPackageInfo(eq(packageName), anyInt())).thenReturn(packageInfo); |
| when(mPackageManager.getPackagesForUid(eq(uid))).thenReturn(new String[]{packageName}); |
| mObserver.onPackageAdded(packageName, uid); |
| return packageInfo; |
| } |
| |
| @Test |
| public void testPackageInstall() throws Exception { |
| final NetdServiceMonitor mNetdServiceMonitor = new NetdServiceMonitor(mNetdService); |
| |
| addPackage(MOCK_PACKAGE1, MOCK_UID1, new String[] {INTERNET, UPDATE_DEVICE_STATS}); |
| mNetdServiceMonitor.expectPermission(INetd.PERMISSION_INTERNET |
| | INetd.PERMISSION_UPDATE_DEVICE_STATS, new int[]{MOCK_UID1}); |
| |
| addPackage(MOCK_PACKAGE2, MOCK_UID2, new String[] {INTERNET}); |
| mNetdServiceMonitor.expectPermission(INetd.PERMISSION_INTERNET, new int[]{MOCK_UID2}); |
| } |
| |
| @Test |
| public void testPackageInstallSharedUid() throws Exception { |
| final NetdServiceMonitor mNetdServiceMonitor = new NetdServiceMonitor(mNetdService); |
| |
| PackageInfo packageInfo1 = addPackage(MOCK_PACKAGE1, MOCK_UID1, |
| new String[] {INTERNET, UPDATE_DEVICE_STATS}); |
| mNetdServiceMonitor.expectPermission(INetd.PERMISSION_INTERNET |
| | INetd.PERMISSION_UPDATE_DEVICE_STATS, new int[]{MOCK_UID1}); |
| |
| // Install another package with the same uid and no permissions should not cause the UID to |
| // lose permissions. |
| PackageInfo packageInfo2 = packageInfoWithPermissions(new String[]{}, PARTITION_SYSTEM); |
| when(mPackageManager.getPackageInfo(eq(MOCK_PACKAGE2), anyInt())).thenReturn(packageInfo2); |
| when(mPackageManager.getPackagesForUid(MOCK_UID1)) |
| .thenReturn(new String[]{MOCK_PACKAGE1, MOCK_PACKAGE2}); |
| mObserver.onPackageAdded(MOCK_PACKAGE2, MOCK_UID1); |
| mNetdServiceMonitor.expectPermission(INetd.PERMISSION_INTERNET |
| | INetd.PERMISSION_UPDATE_DEVICE_STATS, new int[]{MOCK_UID1}); |
| } |
| |
| @Test |
| public void testPackageUninstallBasic() throws Exception { |
| final NetdServiceMonitor mNetdServiceMonitor = new NetdServiceMonitor(mNetdService); |
| |
| addPackage(MOCK_PACKAGE1, MOCK_UID1, new String[] {INTERNET, UPDATE_DEVICE_STATS}); |
| mNetdServiceMonitor.expectPermission(INetd.PERMISSION_INTERNET |
| | INetd.PERMISSION_UPDATE_DEVICE_STATS, new int[]{MOCK_UID1}); |
| |
| when(mPackageManager.getPackagesForUid(MOCK_UID1)).thenReturn(new String[]{}); |
| mObserver.onPackageRemoved(MOCK_PACKAGE1, MOCK_UID1); |
| mNetdServiceMonitor.expectPermission(INetd.PERMISSION_UNINSTALLED, new int[]{MOCK_UID1}); |
| } |
| |
| @Test |
| public void testPackageUpdate() throws Exception { |
| final NetdServiceMonitor mNetdServiceMonitor = new NetdServiceMonitor(mNetdService); |
| |
| addPackage(MOCK_PACKAGE1, MOCK_UID1, new String[] {INTERNET, UPDATE_DEVICE_STATS}); |
| mNetdServiceMonitor.expectPermission(INetd.PERMISSION_INTERNET |
| | INetd.PERMISSION_UPDATE_DEVICE_STATS, new int[]{MOCK_UID1}); |
| |
| // Remove and install the same package to simulate the update action |
| when(mPackageManager.getPackagesForUid(MOCK_UID1)).thenReturn(new String[]{}); |
| mObserver.onPackageRemoved(MOCK_PACKAGE1, MOCK_UID1); |
| mNetdServiceMonitor.expectPermission(INetd.PERMISSION_UNINSTALLED, new int[]{MOCK_UID1}); |
| |
| addPackage(MOCK_PACKAGE1, MOCK_UID1, new String[] {INTERNET}); |
| mNetdServiceMonitor.expectPermission(INetd.PERMISSION_INTERNET, new int[]{MOCK_UID1}); |
| } |
| |
| @Test |
| public void testPackageUninstallWithMultiplePackages() throws Exception { |
| final NetdServiceMonitor mNetdServiceMonitor = new NetdServiceMonitor(mNetdService); |
| |
| addPackage(MOCK_PACKAGE1, MOCK_UID1, new String[] {INTERNET, UPDATE_DEVICE_STATS}); |
| mNetdServiceMonitor.expectPermission(INetd.PERMISSION_INTERNET |
| | INetd.PERMISSION_UPDATE_DEVICE_STATS, new int[]{MOCK_UID1}); |
| |
| // Mock another package with the same uid but different permissions. |
| PackageInfo packageInfo2 = packageInfoWithPermissions(new String[] {INTERNET}, |
| PARTITION_SYSTEM); |
| when(mPackageManager.getPackageInfo(eq(MOCK_PACKAGE2), anyInt())).thenReturn(packageInfo2); |
| when(mPackageManager.getPackagesForUid(MOCK_UID1)).thenReturn(new String[]{ |
| MOCK_PACKAGE2}); |
| |
| mObserver.onPackageRemoved(MOCK_PACKAGE1, MOCK_UID1); |
| mNetdServiceMonitor.expectPermission(INetd.PERMISSION_INTERNET, new int[]{MOCK_UID1}); |
| } |
| |
| @Test |
| public void testRealSystemPermission() throws Exception { |
| // Use the real context as this test must ensure the *real* system package holds the |
| // necessary permission. |
| final Context realContext = InstrumentationRegistry.getContext(); |
| final PermissionMonitor monitor = new PermissionMonitor(realContext, mNetdService); |
| final PackageManager manager = realContext.getPackageManager(); |
| final PackageInfo systemInfo = manager.getPackageInfo(REAL_SYSTEM_PACKAGE_NAME, |
| GET_PERMISSIONS | MATCH_ANY_USER); |
| assertTrue(monitor.hasPermission(systemInfo, CONNECTIVITY_USE_RESTRICTED_NETWORKS)); |
| } |
| } |
