| /* |
| * 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.ComponentName; |
| import android.content.Intent; |
| import com.android.internal.util.XmlUtils; |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| |
| import java.io.IOException; |
| |
| class NotFilter implements Filter { |
| private final Filter mChild; |
| |
| private NotFilter(Filter child) { |
| mChild = child; |
| } |
| |
| @Override |
| public boolean matches(IntentFirewall ifw, ComponentName resolvedComponent, Intent intent, |
| int callerUid, int callerPid, String resolvedType, int receivingUid) { |
| return !mChild.matches(ifw, resolvedComponent, intent, callerUid, callerPid, resolvedType, |
| receivingUid); |
| } |
| |
| public static final FilterFactory FACTORY = new FilterFactory("not") { |
| @Override |
| public Filter newFilter(XmlPullParser parser) |
| throws IOException, XmlPullParserException { |
| Filter child = null; |
| int outerDepth = parser.getDepth(); |
| while (XmlUtils.nextElementWithin(parser, outerDepth)) { |
| Filter filter = IntentFirewall.parseFilter(parser); |
| if (child == null) { |
| child = filter; |
| } else { |
| throw new XmlPullParserException( |
| "<not> tag can only contain a single child filter.", parser, null); |
| } |
| } |
| return new NotFilter(child); |
| } |
| }; |
| } |