package examples;
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" and
* "Apache Commons" must not be used to endorse or promote products
* derived from this software without prior written permission. For
* written permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without
* prior written permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
import java.io.IOException;
import org.apache.commons.net.bsd.RExecClient;
/***
* This is an example program demonstrating how to use the RExecClient class.
* This program connects to an rexec server and requests that the
* given command be executed on the server. It then reads input from stdin
* (this will be line buffered on most systems, so don't expect character
* at a time interactivity), passing it to the remote process and writes
* the process stdout and stderr to local stdout.
* <p>
* Example: java rexec myhost myusername mypassword "ps -aux"
* <p>
* Usage: rexec <hostname> <username> <password> <command>
* <p>
***/
// This class requires the IOUtil support class!
public final class rexec
{
public static final void main(String[] args)
{
String server, username, password, command;
RExecClient client;
if (args.length != 4)
{
System.err.println(
"Usage: rexec <hostname> <username> <password> <command>");
System.exit(1);
return ; // so compiler can do proper flow control analysis
}
client = new RExecClient();
server = args[0];
username = args[1];
password = args[2];
command = args[3];
try
{
client.connect(server);
}
catch (IOException e)
{
System.err.println("Could not connect to server.");
e.printStackTrace();
System.exit(1);
}
try
{
client.rexec(username, password, command);
}
catch (IOException e)
{
try
{
client.disconnect();
}
catch (IOException f)
{}
e.printStackTrace();
System.err.println("Could not execute command.");
System.exit(1);
}
IOUtil.readWrite(client.getInputStream(), client.getOutputStream(),
System.in, System.out);
try
{
client.disconnect();
}
catch (IOException e)
{
e.printStackTrace();
System.exit(1);
}
System.exit(0);
}
}