www.pudn.com > JpcapDumper-0.3-src.zip > ICMPAnalyzer.java

package jdumper.analyzer; 
import jpcap.packet.*; 
import java.util.*; 
 
public class ICMPAnalyzer extends JDPacketAnalyzer 
{ 
	private static final String[] valueNames={ 
		"Type", 
		"Code", 
		"ID", 
		"Sequence", 
		"Redirect Address", 
		"Address Mask", 
		"Original Timestamp", 
		"Receive Timestamp", 
		"Transmission Timestamp" 
	}; 
	 
	private static final String[] typeNames={ 
		"Echo Reply(0)", 
		"Unknown(1)", 
		"Unknown(2)", 
		"Destination Unreachable(3)", 
		"Source Quench(4)", 
		"Redirect(5)", 
		"Unknown(6)", 
		"Unknown(7)", 
		"Echo(8)", 
		"Unknown(9)", 
		"Unknown(10)", 
		"Time Exceeded(11)", 
		"Parameter Problem(12)", 
		"Timestamp(13)", 
		"Timestamp Reply(14)", 
		"Unknown(15)", 
		"Unknown(16)", 
		"Address Mask Request(17)", 
		"Address Mask Reply(18)" 
	}; 
	 
	private Hashtable values=new Hashtable(); 
	 
	public ICMPAnalyzer(){ 
		layer=TRANSPORT_LAYER; 
	} 
	 
	public boolean isAnalyzable(Packet p){ 
		return (p instanceof ICMPPacket); 
	} 
	 
	public String getProtocolName(){ 
		return "ICMP"; 
	} 
	 
	public String[] getValueNames(){ 
		return valueNames; 
	} 
	 
	public void analyze(Packet p){ 
		if(!isAnalyzable(p)) return; 
		values.clear(); 
		 
		ICMPPacket icmp=(ICMPPacket)p; 
		if(icmp.type>=typeNames.length){ 
			values.put(valueNames[0],String.valueOf(icmp.type)); 
		}else{ 
			values.put(valueNames[0],typeNames[icmp.type]); 
		} 
		values.put(valueNames[1],new Integer(icmp.code)); 
		 
		if(icmp.type==0 || icmp.type==8 || (icmp.type>=13 && icmp.type<=18)){ 
			values.put(valueNames[2],new Integer(icmp.id)); 
			values.put(valueNames[3],new Integer(icmp.seq)); 
		} 
		 
		if(icmp.type==5) 
			values.put(valueNames[4],icmp.redir_ip); 
		 
		if(icmp.type==17 || icmp.type==18) 
			values.put(valueNames[5],(icmp.subnetmask>>12)+"."+ 
			                         ((icmp.subnetmask>>8)&0xff)+"."+ 
			                         ((icmp.subnetmask>>4)&0xff)+"."+ 
			                         (icmp.subnetmask&0xff)+"."); 
		 
		if(icmp.type==13 || icmp.type==14){ 
			values.put(valueNames[6],new Long(icmp.orig_timestamp)); 
			values.put(valueNames[7],new Long(icmp.recv_timestamp)); 
			values.put(valueNames[8],new Long(icmp.trans_timestamp)); 
		} 
	} 
	 
	public Object getValue(String valueName){ 
		return values.get(valueName); 
	} 
	 
	public Object getValueAt(int index){ 
		if(index<0 || index>=valueNames.length) return null; 
		return values.get(valueNames[index]); 
	} 
	 
	public Object[] getValues(){ 
		Object[] v=new Object[valueNames.length]; 
		 
		for(int i=0;i