asn1.java

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//
// This file is part of the OpenNMS(R) Application.
//
// OpenNMS(R) is Copyright (C) 2002-2003 The OpenNMS Group, Inc.  All rights reserved.
// OpenNMS(R) is a derivative work, containing both original code, included code and modified
// code that was published under the GNU General Public License. Copyrights for modified 
// and included code are below.
//
// OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
//
// Copyright (C) 1999-2001 Oculan Corp.  All rights reserved.
//
// 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.
//
// For more information contact:
//      OpenNMS Licensing       <[e-mail]>
//      http://www.opennms.org/
//      http://www.opennms.com/
//
// Tab Size = 8
//
// ASN1.java,v 1.1.1.1 2001/11/11 17:27:23 ben Exp
//
//

package org.opennms.protocols.snmp.asn1;

/**
 * Public ASN.1 definitions. See "SNMPv1, SNMPv2, SNMPv3 and RMON 1 and 2, 3rd
 * Ed." by William Stallings, Published by Addision Wesley for more information.
 * 
 * @author <a href="http://www.opennms.org">OpenNMS </a>
 * @author <a href="mailto:[e-mail]>Brian Weaver </a>
 * @version 1.1.1.1
 */
public class ASN1 {
    /**
     * Basic data type representing TRUE or FALSE.
     */
    public static final byte BOOLEAN = (byte) 0x01;

    /**
     * Positive and negative whole numbers, including zero.
     */
    public static final byte INTEGER = (byte) 0x02;

    /**
     * A sequence of zero or more bits
     */
    public static final byte BITSTRING = (byte) 0x03;

    /**
     * A sequence of zero or more octets. An octet is an 8-bit value.
     */
    public static final byte OCTETSTRING = (byte) 0x04;

    /**
     * The single value NULL. Commonly used value where several alternatives are
     * possible but none apply.
     */
    public static final byte NULL = (byte) 0x05;

    /**
     * The set of values associated with information objects allocated by the
     * standard.
     */
    public static final byte OBJECTID = (byte) 0x06;

    /**
     * Defined by referencing a fixed, ordered list of types. Each value is an
     * ordered list of values, one from each component type.
     */
    public static final byte SEQUENCE = (byte) 0x10;

    /**
     * Defined by referencing a fixed, unordered list of types, some of which
     * may be declared optional. Each value is an unordered list of values, one
     * from each component type.
     */
    public static final byte SET = (byte) 0x11;

    /**
     * Generally useful, application-independant types and construction
     * mechanisms.
     */
    public static final byte UNIVERSAL = (byte) 0x00;

    /**
     * Relevant to a particular application. These are defined in standards
     * other than ASN.1.
     */
    public static final byte APPLICATION = (byte) 0x40;

    /**
     * Also relevant to a particular application, but limited by context
     */
    public static final byte CONTEXT = (byte) 0x80;

    /**
     * These are types not covered by any standard but instead defined by users.
     */
    public static final byte PRIVATE = (byte) 0xC0;

    /**
     * A primitive data object.
     */
    public static final byte PRIMITIVE = (byte) 0x00;

    /**
     * A constructed data object such as a set or sequence.
     */
    public static final byte CONSTRUCTOR = (byte) 0x20;
}