com.sshtools.synergy.ssh.ChannelOutputStream Maven / Gradle / Ivy

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package com.sshtools.synergy.ssh;

/*-
 * #%L
 * Common API
 * %%
 * Copyright (C) 2002 - 2024 JADAPTIVE Limited
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 * #L%
 */

import java.io.IOException;
import java.io.OutputStream;

import com.sshtools.common.logger.Log;

public class ChannelOutputStream extends OutputStream {

		int type = -1;
		
		ChannelNG channel;
		boolean sentEOF;
		
		public ChannelOutputStream(ChannelNG channel) {
			this.channel = channel;
		}
		
		public ChannelOutputStream(ChannelNG channel, int type) {
			this.type = type;
			this.channel = channel;
		}
		
		@Override
		public void write(int b) throws IOException {
			if(type > -1) {
				channel.sendExtendedData(new byte[] { (byte) b}, type);
			} else {
				channel.sendChannelDataAndBlock(new byte[] { (byte) b});
			}
		}

		@Override
		public void write(byte[] b, int off, int len) throws IOException {
			if(type > -1) {
				channel.sendExtendedData(b, off, len, type);
			} else {
				channel.sendData(b, off, len);
			}
		}
		
		public void close() {
			synchronized(channel) {
				if(!sentEOF && !channel.isClosed() && !channel.isClosing()) {
					if(Log.isDebugEnabled()) {
						channel.log("The channel's OutputStream has been closed");
					}
					channel.sendEOF();
					sentEOF = true;
				}
			}
		}
	}