snmpwalk.java.txt
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- /* $Id: snmpwalk.src,v 1.4 2002/09/09 05:43:43 pushpar Exp $ */
- /*
- * @(#)snmpwalk.java
- * Copyright (c) 1996-2003 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 WALK using com.adventnet.snmp.snmp2 and
- * com.adventnet.snmp.mibs packages of AdventNetSNMP2 api.
- * The user could run this application by giving any one of the following usage.
- *
- * java snmpwalk [options] hostname oid
- *
- * v1 request:
- * java snmpwalk [-d] [-m MIB_files] [-c community] [-p port] [-t timeout] [-r retries] host OID
- * e.g.
- * java snmpwalk -p 161 -c public -m ../../../RFC1213-MIB adventnet .1.3.6.1
- *<img SRC="images/v2candv3only.jpg" ALT="v2c and v3 only">
- * v2c request:
- * java snmpwalk [-d] [-v version(v1,v2)] [-m MIB_files] [-c community] [-p port] [-t timeout] [-r retries] host OID
- * e.g. For v1 request give -v v1 or drop the option -v .
- * java snmpwalk -p 161 -v v2 -c public -m ../../../RFC1213-MIB adventnet .iso.org
- *<img SRC="images/v3only.jpg" ALT="v3 only">
- * v3 request:
- * java snmpwalk [-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] host OID
- * e.g.
- * java snmpwalk -v v3 -u initial2 -w initial2Pass -a MD5 10.3.2.120 .1.3
- *
- * 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 .
- *
- * If the mib is loaded you can also give string oids in the following formats
- * .iso.org.dod.internet.mgmt.mib-2.system.sysDescr.0 or system.sysDescr.0 or
- * sysDescr.0 .
- *
- * 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.
- * [-m] <MIBfile> - MIB files.To load multiple mibs give within double quotes files seperated by a blank space.
- *<img SRC="images/v3only.jpg" ALT="v3 only"> [-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 only one Object Identifier.
- */
- import java.lang.*;
- import java.util.*;
- import java.net.*;
- import com.adventnet.snmp.snmp2.*;
- import com.adventnet.snmp.mibs.*;
- import com.adventnet.snmp.snmp2.usm.*;
- public class snmpwalk {
- private static final int DEBUG = 0;
- private static final int MIBS = 6;
- public static void main(String args[]) {
-
- // Take care of getting options
- String usage = "snmpwalk [-d] [-v version(v1,v2,v3)] [-m MIB_files] [-c community] [-p port] [-r retries] [-t timeout] [-u user] [-a auth_protocol] [-w auth_password] [-s priv_password] [-n contextName] [-i contextID] host OID ";
- String options[] = { "-d", "-c", "-wc", "-p", "-r", "-t", "-m", "-v", "-u", "-a", "-w", "-s", "-n", "-i"};
- String values[] = { "None", null, null, null, null, null, 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[DEBUG].equals("Set")) api.setDebug( true );
- // Open SnmpSession
- SnmpSession session = new SnmpSession(api);
- // set remote Host
- session.setPeername( opt.remArgs[0] );
- //set the values
- SetValues setVal = new SetValues(session, values);
- if(setVal.usage_error) opt.usage_error();
- // Loading MIBS .
- MibOperations mibOps = new MibOperations();
- // To load MIBs from compiled file
- mibOps.setLoadFromCompiledMibs(true);
-
- if (values[MIBS] != null) try {
- System.err.println("Loading MIBs: "+values[MIBS]);
- mibOps.loadMibModules(values[MIBS]);
- } catch (Exception ex) {
- System.err.println("Error loading MIBs: "+ex);
- }
-
- // Build GetNext request PDU
- SnmpPDU pdu = new SnmpPDU();
- pdu.setCommand( api.GETNEXT_REQ_MSG );
- // need to save the root OID to walk sub-tree
- SnmpOID oid = mibOps.getSnmpOID(opt.remArgs[1]);
- if( oid == null)
- System.exit(1);
- int rootoid[] = (int[]) oid.toValue();
- if (rootoid == null) { //if don't have a valid OID for first, exit
- System.err.println("Invalid OID argument: " + opt.remArgs[1]);
- System.exit(1);
- }
- else pdu.addNull(oid);
- try {
- // open sesssion
- session.open();
- } catch (SnmpException e) {
- System.err.println("Error in open session : "+e.getMessage());
- }
- if(session.getVersion()==SnmpAPI.SNMP_VERSION_3) {
- pdu.setUserName(setVal.userName.getBytes());
- USMUtils.init_v3_params(setVal.userName, setVal.authProtocol, setVal.authPassword, setVal.privPassword, session.getPeername(),session.getRemotePort(),session);
- pdu.setContextName(setVal.contextName.getBytes());
- pdu.setContextID(setVal.contextID.getBytes());
- }
- // loop for each PDU in the walk
- while (true) { // until received OID isn't in sub-tree
- try {
- // Send PDU and receive response PDU
- pdu = session.syncSend(pdu);
- }
- catch (SnmpException e) {
- System.err.println("Sending PDU : " + e.getMessage());
- System.exit(1);
- }
- if (pdu == null) {
- // timeout
- System.out.println("Request timed out to: " + opt.remArgs[0] );
- System.exit(1);
- }
- // stop if outside of sub-tree
- if (!isInSubTree(rootoid,pdu))
- break;
- // print response PDU
- if(pdu.getVersion() == SnmpAPI.SNMP_VERSION_1) {
- // check for error
- if (pdu.getErrstat() != 0) {
- System.out.println("Error Indication in response: " +
- SnmpException.exceptionString((byte)pdu.getErrstat()) +
- "nErrindex: " + pdu.getErrindex());
- System.exit(1);
- }
- // print response pdu variable-bindings
- System.out.println(mibOps.varBindsToString(pdu));
- } else if((pdu.getVersion() == SnmpAPI.SNMP_VERSION_2C) || (pdu.getVersion() == SnmpAPI.SNMP_VERSION_3)) {
- for(Enumeration e = pdu.getVariableBindings().elements();
- e.hasMoreElements() ;) {
-
- int error = 0;
- SnmpVarBind varbind = (SnmpVarBind)e.nextElement();
- // check for error
- if ( (error = varbind.getErrindex()) != 0) {
- System.out.println("Error Indication in response: " +
- SnmpException.exceptionString((byte)error));
- System.exit(1);
- }
- // print response pdu variable-bindings
- System.out.println(mibOps.varBindsToString(pdu));
- }
-
- } else System.out.println("Invalid Version Number");
- // set GETNEXT_REQ_MSG to do walk
- pdu.setCommand( api.GETNEXT_REQ_MSG );
- // Don't forget to set request id to 0 otherwise next request will fail
- pdu.setReqid(0);
- } // end of while true
-
- // close session
- session.close();
- // stop api thread
- api.close();
-
- System.exit(0);
- }
- /** check if first varbind oid has rootoid as an ancestor in MIB tree */
- static boolean isInSubTree(int[] rootoid, SnmpPDU pdu) {
- SnmpOID objID = (SnmpOID) pdu.getObjectID(0);
- if (objID == null) return false;
- int oid[] = (int[]) objID.toValue();
- if (oid == null) return false;
- if (oid.length < rootoid.length) return false;
- for (int i=0;i<rootoid.length;i++)
- if (oid[i] != rootoid[i]) return false;
- return true;
- }
- }