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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.channel;
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import java.io.IOException;
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import org.apache.sshd.client.future.DefaultOpenFuture;
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import org.apache.sshd.client.future.OpenFuture;
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import org.apache.sshd.common.SshConstants;
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import org.apache.sshd.common.channel.AbstractChannel;
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import org.apache.sshd.common.util.Buffer;
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/**
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 * TODO Add javadoc
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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 abstract class AbstractServerChannel extends AbstractChannel {
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    protected boolean exitStatusSent;
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    public OpenFuture open(int recipient, int rwsize, int rmpsize, Buffer buffer) {
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        this.recipient = recipient;
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        this.remoteWindow.init(rwsize, rmpsize);
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        configureWindow();
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        return doInit(buffer);
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    }
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    public void handleOpenSuccess(int recipient, int rwsize, int rmpsize, Buffer buffer) throws IOException {
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        throw new IllegalStateException();
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    }
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    public void handleOpenFailure(Buffer buffer) {
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        throw new IllegalStateException();
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    }
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    protected OpenFuture doInit(Buffer buffer) {
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        OpenFuture f = new DefaultOpenFuture(this);
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        f.setOpened();
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        return f;
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    }
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    protected void sendExitStatus(int v) throws IOException {
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        if (!exitStatusSent) {
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            exitStatusSent = true;
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            log.debug("Send SSH_MSG_CHANNEL_REQUEST exit-status on channel {}", id);
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            Buffer buffer = session.createBuffer(SshConstants.SSH_MSG_CHANNEL_REQUEST);
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            buffer.putInt(recipient);
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            buffer.putString("exit-status");
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            buffer.putByte((byte) 0);
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            buffer.putInt(v);
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            writePacket(buffer);
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            notifyStateChanged();
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        }
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    }
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}