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/*
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 * Licensed to the Apache Software Foundation (ASF) under one
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 * or more contributor license agreements.  See the NOTICE file
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 * distributed with this work for additional information
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 * regarding copyright ownership.  The ASF licenses this file
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 * to you under the Apache License, Version 2.0 (the
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 * "License"); you may not use this file except in compliance
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 * with the License.  You may obtain a copy of the License at
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 *
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 *   http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing,
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 * software distributed under the License is distributed on an
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 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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 * KIND, either express or implied.  See the License for the
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 * specific language governing permissions and limitations
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 * under the License.
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 */
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package org.apache.sshd.server.global;
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import org.apache.sshd.common.RequestHandler;
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import org.apache.sshd.common.SshConstants;
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import org.apache.sshd.common.SshdSocketAddress;
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import org.apache.sshd.common.session.ConnectionService;
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import org.apache.sshd.common.util.Buffer;
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/**
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 * Handler for tcpip-forward global request.
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 *
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 * @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a>
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 */
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public class TcpipForwardHandler implements RequestHandler<ConnectionService> {
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    public Result process(ConnectionService connectionService, String request, boolean wantReply, Buffer buffer) throws Exception {
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        if (request.equals("tcpip-forward")) {
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            String address = buffer.getString();
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            int port = buffer.getInt();
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            SshdSocketAddress bound = connectionService.getTcpipForwarder().localPortForwardingRequested(new SshdSocketAddress(address, port));
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            port = bound.getPort();
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            if (wantReply){
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                buffer = connectionService.getSession().createBuffer(SshConstants.SSH_MSG_REQUEST_SUCCESS);
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                buffer.putInt(port);
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                connectionService.getSession().writePacket(buffer);
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            }
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            return Result.Replied;
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        }
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        return Result.Unsupported;
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    }
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}