/*
* @(#)file SnmpMibRequestImpl.java
* @(#)author Sun Microsystems, Inc.
* @(#)version 1.14
* @(#)date 05/08/26
*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package com.sun.jmx.snmp.agent;
import java.util.Enumeration;
import java.util.Vector;
import com.sun.jmx.snmp.SnmpPdu;
import com.sun.jmx.snmp.SnmpVarBind;
import com.sun.jmx.snmp.SnmpEngine;
/**
* This class implements the SnmpMibRequest interface.
* It represents the part of a SNMP request that involves a specific
* MIB. One instance of this class will be created for every MIB
* involved in a SNMP request, and will be passed to the SnmpMibAgent
* in charge of handling that MIB.
*
* Instances of this class are allocated by the SNMP engine. You will
* never need to use this class directly. You will only access
* instances of this class through their SnmpMibRequest interface.
*
*/
final class SnmpMibRequestImpl implements SnmpMibRequest {
/**
* @param engine The local engine.
* @param reqPdu The received pdu.
* @param vblist The vector of SnmpVarBind objects in which the
* MIB concerned by this request is involved.
* @param protocolVersion The protocol version of the SNMP request.
* @param userData User allocated contextual data. This object must
* be allocated on a per SNMP request basis through the
* SnmpUserDataFactory registered with the SnmpAdaptorServer,
* and is handed back to the user through SnmpMibRequest objects.
*/
public SnmpMibRequestImpl(SnmpEngine engine,
SnmpPdu reqPdu,
Vector vblist,
int protocolVersion,
Object userData,
String principal,
int securityLevel,
int securityModel,
byte[] contextName,
byte[] accessContextName) {
varbinds = vblist;
version = protocolVersion;
data = userData;
this.reqPdu = reqPdu;
this.engine = engine;
this.principal = principal;
this.securityLevel = securityLevel;
this.securityModel = securityModel;
this.contextName = contextName;
this.accessContextName = accessContextName;
}
// -------------------------------------------------------------------
// PUBLIC METHODS from SnmpMibRequest
// -------------------------------------------------------------------
/**
* Returns the local engine. This parameter is returned only if <CODE> SnmpV3AdaptorServer </CODE> is the adaptor receiving this request. Otherwise null is returned.
* @return the local engine.
*/
public SnmpEngine getEngine() {
return engine;
}
/**
* Gets the incoming request principal. This parameter is returned only if <CODE> SnmpV3AdaptorServer </CODE> is the adaptor receiving this request. Otherwise null is returned.
* @return The request principal.
**/
public String getPrincipal() {
return principal;
}
/**
* Gets the incoming request security level. This level is defined in {@link com.sun.jmx.snmp.SnmpEngine SnmpEngine}. This parameter is returned only if <CODE> SnmpV3AdaptorServer </CODE> is the adaptor receiving this request. Otherwise -1 is returned.
* @return The security level.
*/
public int getSecurityLevel() {
return securityLevel;
}
/**
* Gets the incoming request security model. This parameter is returned only if <CODE> SnmpV3AdaptorServer </CODE> is the adaptor receiving this request. Otherwise -1 is returned.
* @return The security model.
*/
public int getSecurityModel() {
return securityModel;
}
/**
* Gets the incoming request context name. This parameter is returned only if <CODE> SnmpV3AdaptorServer </CODE> is the adaptor receiving this request. Otherwise null is returned.
* @return The context name.
*/
public byte[] getContextName() {
return contextName;
}
/**
* Gets the incoming request context name used by Access Control Model in order to allow or deny the access to OIDs. This parameter is returned only if <CODE> SnmpV3AdaptorServer </CODE> is the adaptor receiving this request. Otherwise null is returned.
* @return The checked context.
*/
public byte[] getAccessContextName() {
return accessContextName;
}
// -------------------------------------------------------------------
// Implements the method defined in SnmpMibRequest interface.
// See SnmpMibRequest for the java doc.
// -------------------------------------------------------------------
public final SnmpPdu getPdu() {
return reqPdu;
}
// -------------------------------------------------------------------
// Implements the method defined in SnmpMibRequest interface.
// See SnmpMibRequest for the java doc.
// -------------------------------------------------------------------
public final Enumeration getElements() {return varbinds.elements();}
// -------------------------------------------------------------------
// Implements the method defined in SnmpMibRequest interface.
// See SnmpMibRequest for the java doc.
// -------------------------------------------------------------------
public final Vector getSubList() {return varbinds;}
// -------------------------------------------------------------------
// Implements the method defined in SnmpMibRequest interface.
// See SnmpMibRequest for the java doc.
// -------------------------------------------------------------------
public final int getSize() {
if (varbinds == null) return 0;
return varbinds.size();
}
// -------------------------------------------------------------------
// Implements the method defined in SnmpMibRequest interface.
// See SnmpMibRequest for the java doc.
// -------------------------------------------------------------------
public final int getVersion() {return version;}
// -------------------------------------------------------------------
// Implements the method defined in SnmpMibRequest interface.
// See SnmpMibRequest for the java doc.
// -------------------------------------------------------------------
public final int getRequestPduVersion() {return reqPdu.version;}
// -------------------------------------------------------------------
// Implements the method defined in SnmpMibRequest interface.
// See SnmpMibRequest for the java doc.
// -------------------------------------------------------------------
public final Object getUserData() {return data;}
// -------------------------------------------------------------------
// Implements the method defined in SnmpMibRequest interface.
// See SnmpMibRequest for the java doc.
// -------------------------------------------------------------------
public final int getVarIndex(SnmpVarBind varbind) {
return varbinds.indexOf(varbind);
}
// -------------------------------------------------------------------
// Implements the method defined in SnmpMibRequest interface.
// See SnmpMibRequest for the java doc.
// -------------------------------------------------------------------
public void addVarBind(SnmpVarBind varbind) {
varbinds.addElement(varbind);
}
// -------------------------------------------------------------------
// PACKAGE METHODS
// -------------------------------------------------------------------
// -------------------------------------------------------------------
// Allow to pass the request tree built during the check() phase
// to the set() method. Note: the if the tree is `null', then the
// set() method will rebuild a new tree identical to the tree built
// in the check() method.
//
// Passing this tree in the SnmpMibRequestImpl object allows to
// optimize the SET requests.
//
// -------------------------------------------------------------------
final void setRequestTree(SnmpRequestTree tree) {this.tree = tree;}
// -------------------------------------------------------------------
// Returns the SnmpRequestTree object built in the first operation
// phase for two-phase SNMP requests (like SET).
// -------------------------------------------------------------------
final SnmpRequestTree getRequestTree() {return tree;}
// -------------------------------------------------------------------
// Returns the underlying vector of SNMP varbinds (used for algorithm
// optimization).
// -------------------------------------------------------------------
final Vector getVarbinds() {return varbinds;}
// -------------------------------------------------------------------
// Private variables
// -------------------------------------------------------------------
// Ideally these variables should be declared final but it makes
// the jdk1.1.x compiler complain (seems to be a compiler bug, jdk1.2
// is OK).
private Vector varbinds;
private int version;
private Object data;
private SnmpPdu reqPdu = null;
// Non final variable.
private SnmpRequestTree tree = null;
private SnmpEngine engine = null;
private String principal = null;
private int securityLevel = -1;
private int securityModel = -1;
private byte[] contextName = null;
private byte[] accessContextName = null;
}
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