Ben Gruver | 4efe940 | 2013-04-02 21:18:41 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 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 | |
Ben Gruver | f5323fe | 2013-07-31 15:09:51 -0700 | [diff] [blame] | 19 | import android.content.ComponentName; |
Ben Gruver | 4efe940 | 2013-04-02 21:18:41 -0700 | [diff] [blame] | 20 | import android.content.Intent; |
Ben Gruver | 4efe940 | 2013-04-02 21:18:41 -0700 | [diff] [blame] | 21 | import com.android.internal.util.XmlUtils; |
| 22 | import org.xmlpull.v1.XmlPullParser; |
| 23 | import org.xmlpull.v1.XmlPullParserException; |
| 24 | |
| 25 | import java.io.IOException; |
| 26 | |
| 27 | class NotFilter implements Filter { |
| 28 | private final Filter mChild; |
| 29 | |
| 30 | private NotFilter(Filter child) { |
| 31 | mChild = child; |
| 32 | } |
| 33 | |
| 34 | @Override |
Ben Gruver | f5323fe | 2013-07-31 15:09:51 -0700 | [diff] [blame] | 35 | public boolean matches(IntentFirewall ifw, ComponentName resolvedComponent, Intent intent, |
Ben Gruver | 49660c7 | 2013-08-06 19:54:08 -0700 | [diff] [blame] | 36 | int callerUid, int callerPid, String resolvedType, int receivingUid) { |
Ben Gruver | f5323fe | 2013-07-31 15:09:51 -0700 | [diff] [blame] | 37 | return !mChild.matches(ifw, resolvedComponent, intent, callerUid, callerPid, resolvedType, |
Ben Gruver | 49660c7 | 2013-08-06 19:54:08 -0700 | [diff] [blame] | 38 | receivingUid); |
Ben Gruver | 4efe940 | 2013-04-02 21:18:41 -0700 | [diff] [blame] | 39 | } |
| 40 | |
| 41 | public static final FilterFactory FACTORY = new FilterFactory("not") { |
| 42 | @Override |
| 43 | public Filter newFilter(XmlPullParser parser) |
| 44 | throws IOException, XmlPullParserException { |
| 45 | Filter child = null; |
| 46 | int outerDepth = parser.getDepth(); |
| 47 | while (XmlUtils.nextElementWithin(parser, outerDepth)) { |
| 48 | Filter filter = IntentFirewall.parseFilter(parser); |
| 49 | if (child == null) { |
| 50 | child = filter; |
| 51 | } else { |
| 52 | throw new XmlPullParserException( |
| 53 | "<not> tag can only contain a single child filter.", parser, null); |
| 54 | } |
| 55 | } |
| 56 | return new NotFilter(child); |
| 57 | } |
| 58 | }; |
| 59 | } |