import java.util.*;/***Records the status of ports for a particular host**Copyright (C) 2003 Tom Salmon tom@slashtom.org**This program is free software; you can redistribute it and/ormodify it under the terms of the GNU General Public Licenseas published by the Free Software Foundation; version 2.This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY; without even the implied warranty ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See theGNU General Public License for more details.You should have received a copy of the GNU General Public Licensealong with this program; if not, write to the Free SoftwareFoundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.**@author Tom Salmon tom@slashtom.org*@version 0.3.1*/public class Status{	public static final int TCP = 0;	public static final int UDP = 1;	public static final int OPEN = 0;	public static final int CLOSED = 1;	public static final int DROPPED = 2;	private static final int INVALID = -1;	private boolean TCPScan; 	private boolean UDPScan;	private int[] portsTCP = new int[0xffff]; //port status, indexed by port no	private int[] portsUDP = new int[0xffff]; //port status, indexed by port no	// to keep count	private int open = 0;	private int closed = 0;	private int dropped = 0;	private PortLookup service = new PortLookup(Scan.PORT_DEFINITIONS);	// flag if unreachable	private boolean isUnreachable = false;	private String host;	/**	*Constructs status for a specified host and protocol	*@param boolean true for TCP	*@param boolean true for UDP	*@param String host to scan	*/	public Status(boolean TCPScan, boolean UDPScan, String host){		this.TCPScan = TCPScan;		this.UDPScan = UDPScan;		this.host = host;		// set all ports to invalid status		for (int i=0; i<portsTCP.length; i++){			portsTCP[i] = this.INVALID;		}		for (int i=0; i<portsUDP.length; i++){			portsUDP[i] = this.INVALID;		}	}	/**	*Returns the hostname of system being scanned	*/	public String getHost(){		return this.host;	}	/**	*Called if host is unreachable	*/	public void setUnreachable(){		this.isUnreachable = true;	}	/**	*Returns true is host is unreachable	*/	public boolean isUnreachable(){		return this.isUnreachable;	}	/**	*Update the status on a specified port	*@param int port number which is being reported	*@param int status of port, eg. Status.OPEN	*@param int the protocol, eg. Status.TCP	*/	public void addStatus(int port, int status, int proto){		if (proto == this.TCP)			this.portsTCP[port] = status;		else if (proto == this.UDP)			this.portsUDP[port] = status;		else			return;		if (status == this.OPEN)			this.open++;		if (status == this.CLOSED)			this.closed++;		if (status == this.DROPPED)			this.dropped++;	}	/**	*Returns full status of ports on this host	*/	public String toString(){		if (isUnreachable){			return "UNREACHABLE";		}		// check for signs host may be down		if (TCPScan && !UDPScan && this.open == 0 && this.closed == 0){			return "Host appears to be down, or ignoring us";		}		else if (TCPScan && UDPScan && 		  this.open > 10 && this.dropped > 10 && this.closed == 0){			//10 as a rough mark, 10 consecutive ports unlikely to be open			return "Host appears to be down, or ignoring us";		}		else if (!TCPScan && UDPScan && this.closed == 0 && this.OPEN > 10){			//10 as a rough mark, 10 consecutive ports unlikely to be open			return "Host appears to be down, or ignoring us";		}		String s = new String();		for (int i=0; i<portsTCP.length; i++){			if (this.portsTCP[i] == this.INVALID 			  && this.portsUDP[i] == this.INVALID){				continue; //this port has not been scanned			}			if (this.TCPScan){				if (this.portsTCP[i] == this.OPEN){					s += "\t" + i + "\ttcp\t" + service.getService(i,"tcp")						  + "\tOPEN\n";				}				else if (this.portsTCP[i] == this.DROPPED){					s += "\t" + i + "\ttcp\t" + service.getService(i,"tcp")						  + "\tDROPPED\n";				}			}			if (this.UDPScan){				if (this.portsUDP[i] == this.OPEN){					s += "\t" + i + "\tudp\t" + service.getService(i,"udp")						  + "\tOPEN\n";				}			}		}		s += "\n" + (this.open + this.closed + this.dropped)+"\tPorts Scanned\n"			 + this.open + "\tports open\n"			 + this.dropped + "\tports dropped\n"			 + this.closed + "\tports closed\n";		return s;	}}