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/*
* Copyright (C) 2014 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.app.AppGlobals;
import android.content.ComponentName;
import android.content.Intent;
import android.content.pm.IPackageManager;
import android.os.RemoteException;
import android.os.UserHandle;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import java.io.IOException;
public class SenderPackageFilter implements Filter {
private static final String ATTR_NAME = "name";
public final String mPackageName;
public SenderPackageFilter(String packageName) {
mPackageName = packageName;
}
@Override
public boolean matches(IntentFirewall ifw, ComponentName resolvedComponent, Intent intent,
int callerUid, int callerPid, String resolvedType, int receivingUid) {
IPackageManager pm = AppGlobals.getPackageManager();
int packageUid = -1;
try {
packageUid = pm.getPackageUid(mPackageName, UserHandle.USER_OWNER);
} catch (RemoteException ex) {
// handled below
}
if (packageUid == -1) {
return false;
}
return UserHandle.isSameApp(packageUid, callerUid);
}
public static final FilterFactory FACTORY = new FilterFactory("sender-package") {
@Override
public Filter newFilter(XmlPullParser parser)
throws IOException, XmlPullParserException {
String packageName = parser.getAttributeValue(null, ATTR_NAME);
if (packageName == null) {
throw new XmlPullParserException(
"A package name must be specified.", parser, null);
}
return new SenderPackageFilter(packageName);
}
};
}
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