1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server.firewall; 18 19 import android.app.AppGlobals; 20 import android.content.ComponentName; 21 import android.content.Intent; 22 import android.content.pm.IPackageManager; 23 import android.os.RemoteException; 24 import android.os.UserHandle; 25 26 import org.xmlpull.v1.XmlPullParser; 27 import org.xmlpull.v1.XmlPullParserException; 28 29 import java.io.IOException; 30 31 public class SenderPackageFilter implements Filter { 32 private static final String ATTR_NAME = "name"; 33 34 public final String mPackageName; 35 36 public SenderPackageFilter(String packageName) { 37 mPackageName = packageName; 38 } 39 40 @Override 41 public boolean matches(IntentFirewall ifw, ComponentName resolvedComponent, Intent intent, 42 int callerUid, int callerPid, String resolvedType, int receivingUid) { 43 IPackageManager pm = AppGlobals.getPackageManager(); 44 45 int packageUid = -1; 46 try { 47 packageUid = pm.getPackageUid(mPackageName, UserHandle.USER_OWNER); 48 } catch (RemoteException ex) { 49 // handled below 50 } 51 52 if (packageUid == -1) { 53 return false; 54 } 55 56 return UserHandle.isSameApp(packageUid, callerUid); 57 } 58 59 public static final FilterFactory FACTORY = new FilterFactory("sender-package") { 60 @Override 61 public Filter newFilter(XmlPullParser parser) 62 throws IOException, XmlPullParserException { 63 String packageName = parser.getAttributeValue(null, ATTR_NAME); 64 65 if (packageName == null) { 66 throw new XmlPullParserException( 67 "A package name must be specified.", parser, null); 68 } 69 70 return new SenderPackageFilter(packageName); 71 } 72 }; 73 } 74
