osoperations.java

UoB JADhoc is an AODV Implementation in Java. This is a GZIPed TAR file for the Linux/Unix environme

/*

JAdhoc ver 0.11 - Java AODV (RFC 3561) Protocol Handler
Copyright 2003-2004 ComNets, University of Bremen

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.

*/

package jadhoc.os;

import jadhoc.conf.*;
import jadhoc.other.*;
import jadhoc.net.*;


/**
* This class acts as the middleman between the route manager
* and the specific object related to handling route environment
* manipulation in a given operating system-IP version.
*
* @author : Asanga Udugama
* @date : 28-jul-2003
* @email : [e-mail]
*
*/
public class OSOperations {
	public ConfigInfo cfgInfo;
	public CurrentInfo curInfo;

	public OSOperationsInterface osOps;

	/**
	* Constructor that creates the OS operations manipulation
	* object
	* @param ConfigInfo cfg - config info to decide the type
	* 				of OS and IP version
	* @param CurrentInfo cur - current info object
	*/
	public OSOperations(ConfigInfo cfg, CurrentInfo cur) {
		cfgInfo = cfg;
		curInfo = cur;

		osOps = null;
	}

	/**
	* Method that acts as the intermediary between the route manager
	* and the OS/IPv specific object to initialize the route
	* environment. Before initialization, it looks at OS and IP
	* version being used from the config info, and creates the
	* relevent OS/IPv object.
	* @param int level - The initialization level
	*			0 = full initialization level
	*			1 - 100 = other init levels
	* @return int - returns the success or failure
	*/
	public int initializeRouteEnvironment(int level) {

		if(osOps == null) {
			// create the OS-IPv specific OS operations object
			if(cfgInfo.osInUseVal.trim().toLowerCase().equals(ConfigInfo.LINUX_OS)) {
				if(cfgInfo.ipVersionVal == ConfigInfo.IPv4_VERSION_VAL) {// ipv4
					osOps = new OSOperationsLinuxIPv4(cfgInfo, curInfo);
				} else {// ipv6
					//osOps = new OSOperationsLinuxIPv6(cfgInfo, curInfo);
				}
			} else if(cfgInfo.osInUseVal.trim().toLowerCase().equals(ConfigInfo.WINDOWS_OS)) {
				if(cfgInfo.ipVersionVal == ConfigInfo.IPv4_VERSION_VAL) {// ipv4
					osOps = new OSOperationsWindowsIPv4(cfgInfo, curInfo);
				} else {// ipv6
					//osOps = new OSOperationsWindowsIPv6(cfgInfo, curInfo);
				}

			 // add for other operating systems here

			} else {
				// log
				curInfo.log.write(Logging.CRITICAL_LOGGING, "OS Init - Unupported OS");
	
				return (-1);
			}
		}
		return osOps.initializeRouteEnvironment(level);
	}

	/**
	* Method that acts as the intermediary between the route manager
	* and the OS/IPv specific object to set a route
	* @param RouteEntry rtEntry - the route entry from which to get
	*				information
	* @return int - returns the success or failure
	*/
	public int addRoute(RouteEntry rtEntry) {
		return osOps.addRoute(rtEntry);
	}

	/**
	* Method that acts as the intermediary between the route manager
	* and the OS/IPv specific object to remove a route
	* @param RouteEntry rtEntry - the route entry from which to get
	*				information
	* @return int - returns the success or failure
	*/
	public int deleteRoute(RouteEntry rtEntry) {
		return osOps.deleteRoute(rtEntry);
	}

	/**
	* Method that acts as the intermediary between the route manager
	* and the OS/IPv specific object to bring back the route
	* environment to the original state, when stoping protocol
	* handler.
	* @return int - returns the success or failure
	*/
	public int finalizeRouteEnvironment() {
		int rtn = osOps.finalizeRouteEnvironment();
		osOps = null;
		return rtn;
	}
}