| /* |
| * Copyright (C) 2017 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.pm; |
| |
| import static android.content.pm.PackageManager.MATCH_DIRECT_BOOT_AWARE; |
| import static android.content.pm.PackageManager.MATCH_DIRECT_BOOT_UNAWARE; |
| |
| import android.annotation.UserIdInt; |
| import android.app.ActivityManager; |
| import android.app.ActivityManagerInternal; |
| import android.app.ActivityOptions; |
| import android.app.AppOpsManager; |
| import android.app.IApplicationThread; |
| import android.app.admin.DevicePolicyEventLogger; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.ActivityInfo; |
| import android.content.pm.ICrossProfileApps; |
| import android.content.pm.PackageInfo; |
| import android.content.pm.PackageManager; |
| import android.content.pm.PackageManagerInternal; |
| import android.content.pm.ResolveInfo; |
| import android.os.Binder; |
| import android.os.RemoteException; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.stats.devicepolicy.DevicePolicyEnums; |
| import android.text.TextUtils; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.internal.util.Preconditions; |
| import com.android.server.LocalServices; |
| import com.android.server.wm.ActivityTaskManagerInternal; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Objects; |
| |
| public class CrossProfileAppsServiceImpl extends ICrossProfileApps.Stub { |
| private static final String TAG = "CrossProfileAppsService"; |
| |
| private Context mContext; |
| private Injector mInjector; |
| |
| public CrossProfileAppsServiceImpl(Context context) { |
| this(context, new InjectorImpl(context)); |
| } |
| |
| @VisibleForTesting |
| CrossProfileAppsServiceImpl(Context context, Injector injector) { |
| mContext = context; |
| mInjector = injector; |
| } |
| |
| @Override |
| public List<UserHandle> getTargetUserProfiles(String callingPackage) { |
| Objects.requireNonNull(callingPackage); |
| |
| verifyCallingPackage(callingPackage); |
| |
| DevicePolicyEventLogger |
| .createEvent(DevicePolicyEnums.CROSS_PROFILE_APPS_GET_TARGET_USER_PROFILES) |
| .setStrings(new String[] {callingPackage}) |
| .write(); |
| |
| return getTargetUserProfilesUnchecked( |
| callingPackage, mInjector.getCallingUserId()); |
| } |
| |
| @Override |
| public void startActivityAsUser( |
| IApplicationThread caller, |
| String callingPackage, |
| ComponentName component, |
| @UserIdInt int userId, |
| boolean launchMainActivity) throws RemoteException { |
| Objects.requireNonNull(callingPackage); |
| Objects.requireNonNull(component); |
| |
| verifyCallingPackage(callingPackage); |
| |
| DevicePolicyEventLogger |
| .createEvent(DevicePolicyEnums.CROSS_PROFILE_APPS_START_ACTIVITY_AS_USER) |
| .setStrings(new String[] {callingPackage}) |
| .write(); |
| |
| final int callerUserId = mInjector.getCallingUserId(); |
| final int callingUid = mInjector.getCallingUid(); |
| |
| List<UserHandle> allowedTargetUsers = getTargetUserProfilesUnchecked( |
| callingPackage, callerUserId); |
| if (!allowedTargetUsers.contains(UserHandle.of(userId))) { |
| throw new SecurityException(callingPackage + " cannot access unrelated user " + userId); |
| } |
| |
| // Verify that caller package is starting activity in its own package. |
| if (!callingPackage.equals(component.getPackageName())) { |
| throw new SecurityException( |
| callingPackage + " attempts to start an activity in other package - " |
| + component.getPackageName()); |
| } |
| |
| // Verify that target activity does handle the intent correctly. |
| final Intent launchIntent = new Intent(); |
| if (launchMainActivity) { |
| launchIntent.setAction(Intent.ACTION_MAIN); |
| launchIntent.addCategory(Intent.CATEGORY_LAUNCHER); |
| launchIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
| | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED); |
| // Only package name is set here, as opposed to component name, because intent action |
| // and category are ignored if component name is present while we are resolving intent. |
| launchIntent.setPackage(component.getPackageName()); |
| } else { |
| // If the main activity is not being launched and the users are different, the caller |
| // must have the required permission and the users must be in the same profile group |
| // in order to launch any of its own activities. |
| if (callerUserId != userId) { |
| final int permissionFlag = ActivityManager.checkComponentPermission( |
| android.Manifest.permission.INTERACT_ACROSS_PROFILES, callingUid, |
| -1, true); |
| if (permissionFlag != PackageManager.PERMISSION_GRANTED |
| || !isSameProfileGroup(callerUserId, userId)) { |
| throw new SecurityException("Attempt to launch activity without required " |
| + android.Manifest.permission.INTERACT_ACROSS_PROFILES + " permission" |
| + " or target user is not in the same profile group."); |
| } |
| } |
| launchIntent.setComponent(component); |
| } |
| verifyActivityCanHandleIntentAndExported(launchIntent, component, callingUid, userId); |
| |
| launchIntent.setPackage(null); |
| launchIntent.setComponent(component); |
| mInjector.getActivityTaskManagerInternal().startActivityAsUser( |
| caller, callingPackage, launchIntent, |
| launchMainActivity |
| ? ActivityOptions.makeOpenCrossProfileAppsAnimation().toBundle() |
| : null, |
| userId); |
| } |
| |
| private List<UserHandle> getTargetUserProfilesUnchecked( |
| String callingPackage, @UserIdInt int callingUserId) { |
| final long ident = mInjector.clearCallingIdentity(); |
| try { |
| final int[] enabledProfileIds = |
| mInjector.getUserManager().getEnabledProfileIds(callingUserId); |
| |
| List<UserHandle> targetProfiles = new ArrayList<>(); |
| for (final int userId : enabledProfileIds) { |
| if (userId == callingUserId) { |
| continue; |
| } |
| if (!isPackageEnabled(callingPackage, userId)) { |
| continue; |
| } |
| targetProfiles.add(UserHandle.of(userId)); |
| } |
| return targetProfiles; |
| } finally { |
| mInjector.restoreCallingIdentity(ident); |
| } |
| } |
| |
| private boolean isPackageEnabled(String packageName, @UserIdInt int userId) { |
| final int callingUid = mInjector.getCallingUid(); |
| final long ident = mInjector.clearCallingIdentity(); |
| try { |
| final PackageInfo info = mInjector.getPackageManagerInternal() |
| .getPackageInfo( |
| packageName, |
| MATCH_DIRECT_BOOT_AWARE | MATCH_DIRECT_BOOT_UNAWARE, |
| callingUid, |
| userId); |
| return info != null && info.applicationInfo.enabled; |
| } finally { |
| mInjector.restoreCallingIdentity(ident); |
| } |
| } |
| |
| /** |
| * Verify that the specified intent does resolved to the specified component and the resolved |
| * activity is exported. |
| */ |
| private void verifyActivityCanHandleIntentAndExported( |
| Intent launchIntent, ComponentName component, int callingUid, @UserIdInt int userId) { |
| final long ident = mInjector.clearCallingIdentity(); |
| try { |
| final List<ResolveInfo> apps = |
| mInjector.getPackageManagerInternal().queryIntentActivities( |
| launchIntent, |
| launchIntent.resolveTypeIfNeeded(mContext.getContentResolver()), |
| MATCH_DIRECT_BOOT_AWARE | MATCH_DIRECT_BOOT_UNAWARE, |
| callingUid, |
| userId); |
| final int size = apps.size(); |
| for (int i = 0; i < size; ++i) { |
| final ActivityInfo activityInfo = apps.get(i).activityInfo; |
| if (TextUtils.equals(activityInfo.packageName, component.getPackageName()) |
| && TextUtils.equals(activityInfo.name, component.getClassName()) |
| && activityInfo.exported) { |
| return; |
| } |
| } |
| throw new SecurityException("Attempt to launch activity without " |
| + " category Intent.CATEGORY_LAUNCHER or activity is not exported" + component); |
| } finally { |
| mInjector.restoreCallingIdentity(ident); |
| } |
| } |
| |
| private boolean isSameProfileGroup(@UserIdInt int callerUserId, @UserIdInt int userId) { |
| final long ident = mInjector.clearCallingIdentity(); |
| try { |
| return mInjector.getUserManager().isSameProfileGroup(callerUserId, userId); |
| } finally { |
| mInjector.restoreCallingIdentity(ident); |
| } |
| } |
| |
| /** |
| * Verify that the given calling package is belong to the calling UID. |
| */ |
| private void verifyCallingPackage(String callingPackage) { |
| mInjector.getAppOpsManager().checkPackage(mInjector.getCallingUid(), callingPackage); |
| } |
| |
| private static class InjectorImpl implements Injector { |
| private Context mContext; |
| |
| public InjectorImpl(Context context) { |
| mContext = context; |
| } |
| |
| public int getCallingUid() { |
| return Binder.getCallingUid(); |
| } |
| |
| public int getCallingUserId() { |
| return UserHandle.getCallingUserId(); |
| } |
| |
| public UserHandle getCallingUserHandle() { |
| return Binder.getCallingUserHandle(); |
| } |
| |
| public long clearCallingIdentity() { |
| return Binder.clearCallingIdentity(); |
| } |
| |
| public void restoreCallingIdentity(long token) { |
| Binder.restoreCallingIdentity(token); |
| } |
| |
| public UserManager getUserManager() { |
| return mContext.getSystemService(UserManager.class); |
| } |
| |
| public PackageManagerInternal getPackageManagerInternal() { |
| return LocalServices.getService(PackageManagerInternal.class); |
| } |
| |
| public PackageManager getPackageManager() { |
| return mContext.getPackageManager(); |
| } |
| |
| public AppOpsManager getAppOpsManager() { |
| return mContext.getSystemService(AppOpsManager.class); |
| } |
| |
| @Override |
| public ActivityManagerInternal getActivityManagerInternal() { |
| return LocalServices.getService(ActivityManagerInternal.class); |
| } |
| |
| @Override |
| public ActivityTaskManagerInternal getActivityTaskManagerInternal() { |
| return LocalServices.getService(ActivityTaskManagerInternal.class); |
| } |
| } |
| |
| @VisibleForTesting |
| public interface Injector { |
| int getCallingUid(); |
| |
| int getCallingUserId(); |
| |
| UserHandle getCallingUserHandle(); |
| |
| long clearCallingIdentity(); |
| |
| void restoreCallingIdentity(long token); |
| |
| UserManager getUserManager(); |
| |
| PackageManagerInternal getPackageManagerInternal(); |
| |
| PackageManager getPackageManager(); |
| |
| AppOpsManager getAppOpsManager(); |
| |
| ActivityManagerInternal getActivityManagerInternal(); |
| |
| ActivityTaskManagerInternal getActivityTaskManagerInternal(); |
| } |
| } |