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/*
* AirPort Port Inspector
*
* Copyright (C) 2003, Jonathan Sevy <jsevy@mcs.drexel.edu>
*
* 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 airportinspector;
import java.util.*;
import java.math.*;
import snmp.*;
public class ArpInfoTreeMap extends TreeMap
{
public ArpInfoTreeMap()
{
// create empty Hashtable
super();
}
public ArpInfoTreeMap(SNMPVarBindList varBindList)
{
// create and populate Hashtable of ArpInfo objects
super();
// make list of MAC address / IP address pairs
if (varBindList.size() > 0)
{
int i = 0;
SNMPSequence variablePair = (SNMPSequence)varBindList.getSNMPObjectAt(i);
SNMPObjectIdentifier snmpOID = (SNMPObjectIdentifier)variablePair.getSNMPObjectAt(0);
String oid = snmpOID.toString();
String oidBase = "1.3.6.1.2.1.4.22.1.1";
while(oid.startsWith(oidBase))
{
// use just to get index - note that it's the interface index followed by the IP address;
// SO, we strip off the interface, and VOILA, we have the table hashed by IP.
String tableIndex = oid.substring(oidBase.length() + 1 + 2); // extra 2 strips off the interface index and dot
// add a new ARPInfo object to hashtable, hashed by index
this.put(tableIndex, new ArpInfo());
i++;
if (i >= varBindList.size())
break;
variablePair = (SNMPSequence)varBindList.getSNMPObjectAt(i);
snmpOID = (SNMPObjectIdentifier)variablePair.getSNMPObjectAt(0);
oid = snmpOID.toString();
}
// get MAC addresses
oidBase = "1.3.6.1.2.1.4.22.1.2";
while(oid.startsWith(oidBase))
{
// get index
String tableIndex = oid.substring(oidBase.length() + 1 + 2); // extra 2 strips off the interface index and dot
// modify ARPInfo in hashtable
ArpInfo arpInfo = (ArpInfo)this.get(tableIndex);
SNMPOctetString macAddress = (SNMPOctetString)variablePair.getSNMPObjectAt(1);
arpInfo.macAddress = macAddress.toHexString();
i++;
if (i >= varBindList.size())
break;
variablePair = (SNMPSequence)varBindList.getSNMPObjectAt(i);
snmpOID = (SNMPObjectIdentifier)variablePair.getSNMPObjectAt(0);
oid = snmpOID.toString();
}
// get IP addresses
oidBase = "1.3.6.1.2.1.4.22.1.3";
while(oid.startsWith(oidBase))
{
// get index
String tableIndex = oid.substring(oidBase.length() + 1 + 2); // extra 2 strips off the interface index and dot
// modify ARPInfo in hashtable
ArpInfo arpInfo = (ArpInfo)this.get(tableIndex);
SNMPIPAddress ipAddress = (SNMPIPAddress)variablePair.getSNMPObjectAt(1);
arpInfo.ipAddress = ipAddress.toString();
i++;
variablePair = (SNMPSequence)varBindList.getSNMPObjectAt(i);
snmpOID = (SNMPObjectIdentifier)variablePair.getSNMPObjectAt(0);
oid = snmpOID.toString();
}
}
}
public String toString()
{
String returnValue = new String();
Iterator iterator = this.values().iterator();
while (iterator.hasNext())
{
ArpInfo arpInfo = (ArpInfo)iterator.next();
returnValue += arpInfo.toString() + "\n";
}
return returnValue;
}
}
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