serverexecuter.java

Remote Internet Connect简化了从其它运行操作系统的机子上将一个Linux系统连接到Internet的过程。用户可以用一个简单的GUI加快连接、断开连接、或查看谁在线上。

/*
 * RIC 2 Server Release. by Harry Otten (c) Copyright 2003 [e-mail]
 * Check out http://www.hotten.dds.nl/ric/

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
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 Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
USA.
*/


import java.net.*;  // for Socket, ServerSocket, and InetAddress
import java.io.*;   // for IOException and Input/OutputStream
import java.util.Vector;
import java.lang.* ;

public class ServerExecuter {
	
	private boolean testMode;
	private boolean state=false;
	
	private Config config;
	
	private String COMMAND_CHECK_CONNECTION; 
    private String COMMAND_HANGUP_CONNECTION;
    private String COMMAND_MAKE_CONNECTION; 
	
	public ServerExecuter(Config config) {
		this.COMMAND_CHECK_CONNECTION=config.getCheckConnection();	
		this.COMMAND_HANGUP_CONNECTION=config.getHangupConnection();
		this.COMMAND_MAKE_CONNECTION=config.getMakeConnection();
	};
	
	public ServerExecuter(Config config,boolean testMode) {
		this(config); 
		this.testMode=testMode;
		
		/* the user wants to know this */
		if (testMode) System.out.println("Warning server runs test mode. NO real connections");	
	}
	
	public boolean make() {
		if (!testMode)
			return execute(COMMAND_MAKE_CONNECTION);
		else state=true;
		
		return true;
	};
	
	public boolean hangup() {
		if (!testMode)
			return execute(COMMAND_HANGUP_CONNECTION);
		else state=false;
		
		return true;
	};
	
	public boolean check() {
		if (!testMode)
			return execute(COMMAND_CHECK_CONNECTION);
		else return state;
	};
	
	private boolean execute(String cmd) {
	    Process m ;
		try {
	     	String S = "" ;
	     	m = Runtime.getRuntime().exec(cmd);
		    BufferedReader in = new BufferedReader(new InputStreamReader(
		                        m.getInputStream()));
		    while((S=in.readLine()) != null) {
		        System.out.println(S) ;
		    }
			// Wait until process terminated
			m.waitFor();
		    ///System.out.println("exit waarde : "+m.exitValue()) ;
		    if (m.exitValue()!=0)
		    	return false;
			else return true;
	    } catch(Exception ex) {
			ex.printStackTrace();
			System.out.println("Execute failed for: "+ cmd);
			return false;
	    }
  	};	
};