snmpgetnext.java

this api for java to do the network managerment of system,i like it ,so share for a

/* $Id: snmpgetnext.src,v 1.4.2.3 2006/07/10 16:30:51 rravikumar Exp $ */
/*
 * @(#)snmpgetnext.java
 * Copyright (c) 1996-2004 AdventNet, Inc. All Rights Reserved.
 * Please read the associated COPYRIGHTS file for more details.
 */

/**
 * This is an example program to explain how to write an application to do
 * the basic SNMP operation GETNEXT using com.adventnet.snmp.snmp2 package of
 * AdventNetSNMP2 api.
 * The user could run this application by giving any one of the following usage.
 *  
 * java snmpgetnext [options] hostname oid ...
 *
 * v1 request: 
 * java snmpgetnext [-d] [-c community] [-p port] [-t timeout] [-r retries] host OID [OID] ...
 * e.g. 
 * java snmpgetnext -p 161 -c public adventnet 1.1.0 1.2.0
 *
 * v2c request: 
 * java snmpgetnext [-d] [-v version(v1,v2)] [-c community] [-p port] [-t timeout] [-r retries] host OID [OID] ...
 * e.g. For v1 request give -v v1 or drop the option -v .
 * java snmpgetnext -p 161 -v v2 -c public adventnet 1.1.0 1.2.0
 * 
 * v3 request:
 * java snmpgetnext [-d] [-v version(v1,v2,v3)] [-c community] [-p port] [-r retries] [-t timeout] [-u user] [-a auth_protocol] [-w auth_password] [-s priv_password] [-i context_id] host OID [OID] ...
 * e.g.
 * java snmpgetnext -v v3 -u initial2 -w initial2Pass -a MD5 10.3.2.120 1.2.0
 * 
 * If the oid is not starting with a dot (.) it will be prefixed by .1.3.6.1.2.1 .
 * So the entire OID of 1.1.0 will become .1.3.6.1.2.1.1.1.0 . You can also
 * give the entire OID .
 *
 * Options:
 * [-d]                - Debug output. By default off.
 * [-c] <community>    - community String. By default "public".
 * [-p] <port>         - remote port no. By default 161.
 * [-t] <Timeout>      - Timeout. By default 5000ms.
 * [-r] <Retries>      - Retries. By default 0.      
 * [-v] <version>      - version(v1 / v2 / v3). By default v1.
 * [-u] <username>     - The v3 principal/userName
 * [-a] <autProtocol>  - The authProtocol(MD5/SHA). Mandatory if authPassword is specified
 * [-w] <authPassword> - The authentication password.
 * [-s] <privPassword> - The privacy protocol password. Must be accompanied with auth password and authProtocol fields.
 * [-n] <contextName>  - The contextName to be used for the v3 pdu.
 * [-i] <contextID>    - The contextID to be used for the v3 pdu.
 * <host> Mandatory    - The RemoteHost (agent).Format (string without double qoutes/IpAddress).
 * <OID>  Mandatory    - Give multiple no. of Object Identifiers.
 */

import java.lang.*;
import java.util.*;
import java.net.*;
import com.adventnet.snmp.snmp2.*;
import com.adventnet.snmp.snmp2.usm.*;

public class snmpgetnext {

    public static void main(String args[]) {
        
        // Take care of getting options
        String usage = "snmpgetnext [-d] [-v version(v1,v2,v3)] [-c community] [-p port] [-r retries] [-t timeout] [-u user] [-a auth_protocol] [-w auth_password] [-s priv_password] [-n contextName] [-i contextID] [-pp privProtocol (AES/DES)] host OID [OID] ...";
        String options[] = { "-d", "-c",  "-wc", "-p", "-r", "-t", "-m", "-v", "-u", "-a", "-w", "-s", "-n", "-i", "-pp"};
        String values[] = { "None", null, null, null, null, null, "None", null, null, null, null, null, null, null,null };
        ParseOptions opt = new ParseOptions(args,options,values, usage);
        if (opt.remArgs.length<2) opt.usage_error();
        
        // Start SNMP API
        SnmpAPI api;
        api = new SnmpAPI();
        if (values[0].equals("Set")) api.setDebug( true );    
    
        // Open session 
        SnmpSession session = new SnmpSession(api);
        session.setTransportProvider("com.adventnet.snmp.snmp2.TcpTransportImpl");
        
        //set the values
        SetValues setVal = new SetValues(session, values);
        if(setVal.usage_error) opt.usage_error(); 
        
        // Options that will be used for communication. This can be modified by the user 
        // according to his need.
        ProtocolOptions params = null;
        if(values[3] != null)   {
            params = new TcpProtocolOptionsImpl(opt.remArgs[0], Integer.parseInt( values[3] ), -1);
        }
        else    {
            params = new TcpProtocolOptionsImpl(opt.remArgs[0], 161, -1);
        }
        session.setProtocolOptions(params);
        

        // Build GetNext request PDU
        SnmpPDU pdu = new SnmpPDU();
        pdu.setCommand( api.GETNEXT_REQ_MSG );

        // add OIDs
        for (int i=1;i<opt.remArgs.length;i++) {
            SnmpOID oid = new SnmpOID(opt.remArgs[i]);
            if (oid.toValue() == null) 
                System.err.println("Invalid OID argument: " + opt.remArgs[i]);
            else pdu.addNull(oid);
        }

        try {
            //Open session
            session.open();
        } catch (SnmpException e) {
            System.err.println("Error opening session:"+e.getMessage());
            System.exit(1);
        }

        if(session.getVersion()==SnmpAPI.SNMP_VERSION_3) {
            pdu.setUserName(setVal.userName.getBytes());
            try
            {
                
				USMUtils.init_v3_parameters(
					setVal.userName,
				         null,
					setVal.authProtocol,
					setVal.authPassword,
					setVal.privPassword,
					params,
					session,
					false,
					setVal.privProtocol); 
            }
            catch(Exception exp)
            {
                System.out.println(exp.getMessage());
                System.exit(1);
            }
            pdu.setContextName(setVal.contextName.getBytes());
            pdu.setContextID(setVal.contextID.getBytes());
        }

        try {
            // Send PDU and receive response PDU
            pdu = session.syncSend(pdu);
        } catch (SnmpException e) {
            System.err.println("Sending PDU"+e.getMessage());
            session.close();
            api.close();             
        System.exit(1);
        }    

        if (pdu == null) {
            // timeout
            System.out.println("Request timed out to: " + opt.remArgs[0] );
            session.close();
            api.close();             
        System.exit(1);
        }

         // print and exit
        System.out.println("Response PDU received from " +((TcpProtocolOptionsImpl)(pdu.getProtocolOptions())).getRemoteHost()+
               ", community: " + pdu.getCommunity());

        // Check for error in response
        if (pdu.getErrstat() != 0)
            System.err.println(pdu.getError());
        else 
            // print the response pdu
            System.out.println(pdu.printVarBinds());
      
        // close session
        session.close();
        // stop api thread
        api.close();
    
        System.exit(0);

    }

}