| /* |
| * Copyright (C) 2013 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.firewall; |
| |
| import android.content.Intent; |
| import android.content.pm.ApplicationInfo; |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| |
| import java.io.IOException; |
| |
| class SenderPermissionFilter implements Filter { |
| private static final String ATTR_NAME = "name"; |
| |
| private final String mPermission; |
| |
| private SenderPermissionFilter(String permission) { |
| mPermission = permission; |
| } |
| |
| @Override |
| public boolean matches(IntentFirewall ifw, Intent intent, ApplicationInfo callerApp, |
| int callerUid, int callerPid, String resolvedType, ApplicationInfo resolvedApp) { |
| // We assume the component is exported here. If the component is not exported, then |
| // ActivityManager would only resolve to this component for callers from the same uid. |
| // In this case, it doesn't matter whether the component is exported or not. |
| return ifw.checkComponentPermission(mPermission, callerPid, callerUid, resolvedApp.uid, |
| true); |
| } |
| |
| public static final FilterFactory FACTORY = new FilterFactory("sender-permission") { |
| @Override |
| public Filter newFilter(XmlPullParser parser) |
| throws IOException, XmlPullParserException { |
| String permission = parser.getAttributeValue(null, ATTR_NAME); |
| if (permission == null) { |
| throw new XmlPullParserException("Permission name must be specified.", |
| parser, null); |
| } |
| return new SenderPermissionFilter(permission); |
| } |
| }; |
| } |