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PrivilegedNioSocketChannel.java
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PrivilegedNioSocketChannel.java
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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you 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 org.elasticsearch.transport.netty4.channel;
import io.netty.channel.socket.nio.NioSocketChannel;
import org.elasticsearch.SpecialPermission;
import java.net.SocketAddress;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
/**
* Wraps netty calls to {@link java.nio.channels.SocketChannel#connect(SocketAddress)} in
* {@link AccessController#doPrivileged(PrivilegedAction)} blocks. This is necessary to limit
* {@link java.net.SocketPermission} to the transport module.
*/
public class PrivilegedNioSocketChannel extends NioSocketChannel {
@Override
protected boolean doConnect(SocketAddress remoteAddress, SocketAddress localAddress) throws Exception {
SpecialPermission.check();
try {
return AccessController.doPrivileged((PrivilegedExceptionAction<Boolean>) () -> super.doConnect(remoteAddress, localAddress));
} catch (PrivilegedActionException e) {
throw (Exception) e.getCause();
}
}
}