| /* |
| * Copyright (C) 2015 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.compatibility.common.deviceinfo; |
| |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.PackageInfo; |
| import android.content.pm.PackageManager; |
| import android.content.pm.PermissionInfo; |
| import com.android.compatibility.common.util.DeviceInfoStore; |
| |
| import java.io.IOException; |
| import java.util.*; |
| |
| /** |
| * PackageDeviceInfo collector. |
| */ |
| public class PackageDeviceInfo extends DeviceInfo { |
| |
| private static final String PACKAGE = "package"; |
| |
| private static final String NAME = "name"; |
| private static final String VERSION_NAME = "version_name"; |
| private static final String SYSTEM_PRIV = "system_priv"; |
| private static final String PRIV_APP_DIR = "/system/priv-app"; |
| private static final String MIN_SDK = "min_sdk"; |
| private static final String TARGET_SDK = "target_sdk"; |
| |
| private static final String REQUESTED_PERMISSIONS = "requested_permissions"; |
| private static final String PERMISSION_NAME = "name"; |
| private static final String PERMISSION_FLAGS = "flags"; |
| private static final String PERMISSION_GROUP = "permission_group"; |
| private static final String PERMISSION_PROTECTION = "protection_level"; |
| private static final String PERMISSION_PROTECTION_FLAGS = "protection_level_flags"; |
| |
| private static final String HAS_SYSTEM_UID = "has_system_uid"; |
| |
| private static final String SHARES_INSTALL_PERMISSION = "shares_install_packages_permission"; |
| private static final String INSTALL_PACKAGES_PERMISSION = "android.permission.INSTALL_PACKAGES"; |
| |
| @Override |
| protected void collectDeviceInfo(DeviceInfoStore store) throws Exception { |
| final PackageManager pm = getContext().getPackageManager(); |
| final ApplicationInfo system = pm.getApplicationInfo("android", 0); |
| |
| final List<PackageInfo> allPackages = pm.getInstalledPackages(PackageManager.GET_PERMISSIONS); |
| |
| store.startArray(PACKAGE); |
| for (PackageInfo pkg : allPackages) { |
| store.startGroup(); |
| |
| store.addResult(NAME, pkg.packageName); |
| store.addResult(VERSION_NAME, pkg.versionName); |
| |
| store.startArray(REQUESTED_PERMISSIONS); |
| if (pkg.requestedPermissions != null && pkg.requestedPermissions.length > 0) { |
| for (String permission : pkg.requestedPermissions) { |
| try { |
| final PermissionInfo pi = pm.getPermissionInfo(permission, 0); |
| |
| store.startGroup(); |
| store.addResult(PERMISSION_NAME, permission); |
| store.addResult(PERMISSION_FLAGS, pi.flags); |
| store.addResult(PERMISSION_GROUP, pi.group); |
| store.addResult(PERMISSION_PROTECTION, pi.getProtection()); |
| store.addResult(PERMISSION_PROTECTION_FLAGS, pi.getProtectionFlags()); |
| store.endGroup(); |
| } catch (PackageManager.NameNotFoundException e) { |
| // ignore unrecognized permission and continue |
| } |
| } |
| } |
| store.endArray(); |
| |
| final ApplicationInfo appInfo = pkg.applicationInfo; |
| if (appInfo != null) { |
| String dir = appInfo.sourceDir; |
| store.addResult(SYSTEM_PRIV, dir != null && dir.startsWith(PRIV_APP_DIR)); |
| |
| store.addResult(MIN_SDK, appInfo.minSdkVersion); |
| store.addResult(TARGET_SDK, appInfo.targetSdkVersion); |
| |
| store.addResult(HAS_SYSTEM_UID, appInfo.uid == system.uid); |
| |
| final boolean canInstall = sharesUidWithPackageHolding(pm, appInfo.uid, INSTALL_PACKAGES_PERMISSION); |
| store.addResult(SHARES_INSTALL_PERMISSION, canInstall); |
| } |
| |
| store.endGroup(); |
| } |
| store.endArray(); // "package" |
| } |
| private static boolean sharesUidWithPackageHolding(PackageManager pm, int uid, String permission) { |
| final String[] sharesUidWith = pm.getPackagesForUid(uid); |
| |
| if (sharesUidWith == null) { |
| return false; |
| } |
| |
| // Approx 20 permissions per package for rough estimate of sizing |
| final List<String> sharedPermissions = new ArrayList<>(sharesUidWith.length * 20); |
| for (String pkg :sharesUidWith){ |
| try { |
| final PackageInfo info = pm.getPackageInfo(pkg, PackageManager.GET_PERMISSIONS); |
| |
| if (info.requestedPermissions == null) { |
| continue; |
| } |
| |
| for (String p : info.requestedPermissions) { |
| if (p != null) { |
| sharedPermissions.add(p); |
| } |
| } |
| } catch (PackageManager.NameNotFoundException e) { |
| // ignore, continue |
| } |
| } |
| |
| return sharedPermissions.contains(permission); |
| } |
| } |