SenderPackageFilter.java revision 7c69636c9a406265e1da368f3edfd8fb9651132c
1b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver/* 2b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver * Copyright (C) 2014 The Android Open Source Project 3b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver * 4b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver * Licensed under the Apache License, Version 2.0 (the "License"); 5b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver * you may not use this file except in compliance with the License. 6b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver * You may obtain a copy of the License at 7b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver * 8b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver * http://www.apache.org/licenses/LICENSE-2.0 9b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver * 10b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver * Unless required by applicable law or agreed to in writing, software 11b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver * distributed under the License is distributed on an "AS IS" BASIS, 12b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver * See the License for the specific language governing permissions and 14b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver * limitations under the License. 15b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver */ 16b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver 17b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruverpackage com.android.server.firewall; 18b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver 19b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruverimport android.app.AppGlobals; 20b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruverimport android.content.ComponentName; 21b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruverimport android.content.Intent; 22b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruverimport android.content.pm.IPackageManager; 23b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruverimport android.os.RemoteException; 24b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruverimport android.os.UserHandle; 25b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver 26b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruverimport org.xmlpull.v1.XmlPullParser; 27b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruverimport org.xmlpull.v1.XmlPullParserException; 28b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver 29b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruverimport java.io.IOException; 30b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver 31b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruverpublic class SenderPackageFilter implements Filter { 32b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver private static final String ATTR_NAME = "name"; 33b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver 34b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver public final String mPackageName; 35b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver 36b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver public SenderPackageFilter(String packageName) { 37b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver mPackageName = packageName; 38b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver } 39b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver 40b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver @Override 41b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver public boolean matches(IntentFirewall ifw, ComponentName resolvedComponent, Intent intent, 42b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver int callerUid, int callerPid, String resolvedType, int receivingUid) { 43b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver IPackageManager pm = AppGlobals.getPackageManager(); 44b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver 45b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver int packageUid = -1; 46b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver try { 477c69636c9a406265e1da368f3edfd8fb9651132cXiaohui Chen // USER_SYSTEM here is not important. Only app id is used and getPackageUid() will 487c69636c9a406265e1da368f3edfd8fb9651132cXiaohui Chen // return a uid whether the app is installed for a user or not. 497c69636c9a406265e1da368f3edfd8fb9651132cXiaohui Chen packageUid = pm.getPackageUid(mPackageName, UserHandle.USER_SYSTEM); 50b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver } catch (RemoteException ex) { 51b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver // handled below 52b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver } 53b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver 54b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver if (packageUid == -1) { 55b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver return false; 56b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver } 57b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver 58b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver return UserHandle.isSameApp(packageUid, callerUid); 59b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver } 60b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver 61b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver public static final FilterFactory FACTORY = new FilterFactory("sender-package") { 62b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver @Override 63b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver public Filter newFilter(XmlPullParser parser) 64b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver throws IOException, XmlPullParserException { 65b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver String packageName = parser.getAttributeValue(null, ATTR_NAME); 66b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver 67b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver if (packageName == null) { 68b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver throw new XmlPullParserException( 69b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver "A package name must be specified.", parser, null); 70b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver } 71b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver 72b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver return new SenderPackageFilter(packageName); 73b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver } 74b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver }; 75b2340f3fcc2cfded97e0372a336bcf6f9211e0c1Ben Gruver} 76