src/main/java/net/onrc/onos/packet/DHCPPacketType.java

/**
*    Copyright 2011, Big Switch Networks, Inc. 
*    Originally created by David Erickson, Stanford University
* 
*    Licensed under the Apache License, Version 2.0 (the "License"); you may
*    not use this file except in compliance with the License. You may obtain
*    a copy of the License at
*
*         http://www.apache.org/licenses/LICENSE-2.0
*
*    Unless required by applicable law or agreed to in writing, software
*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
*    License for the specific language governing permissions and limitations
*    under the License.
**/

package net.onrc.onos.packet;

public enum DHCPPacketType {
    // From RFC 1533
    DHCPDISCOVER        (1),
    DHCPOFFER           (2),
    DHCPREQUEST         (3),
    DHCPDECLINE         (4),
    DHCPACK             (5),
    DHCPNAK             (6),
    DHCPRELEASE         (7),
    
    // From RFC2132
    DHCPINFORM          (8),
    
    // From RFC3203
    DHCPFORCERENEW      (9),
    
    // From RFC4388
    DHCPLEASEQUERY      (10),
    DHCPLEASEUNASSIGNED (11),
    DHCPLEASEUNKNOWN    (12),
    DHCPLEASEACTIVE     (13);
    
    protected int value;
    
    private DHCPPacketType(int value) {
        this.value = value;
    }
    
    public int getValue() {
        return value;
    }
    
    public String toString(){
        switch (value) {
            case 1:
                return "DHCPDISCOVER";
            case 2:
                return "DHCPOFFER";
            case 3:
                return "DHCPREQUEST";
            case 4:
                return "DHCPDECLINE";
            case 5:
                return "DHCPACK";
            case 6:
                return "DHCPNAK";
            case 7:
                return "DHCPRELEASE";
            case 8:
                return "DHCPINFORM";
            case 9:
                return "DHCPFORCERENEW";
            case 10:
                return "DHCPLEASEQUERY";
            case 11:
                return "DHCPLEASEUNASSIGNED";
            case 12:
                return "DHCPLEASEUNKNOWN";
            case 13:
                return "DHCPLEASEACTIVE";
        }
        
        return null;
    }
    public static DHCPPacketType getType(int value) {
        switch (value) {
            case 1:
                return DHCPDISCOVER;
            case 2:
                return DHCPOFFER;
            case 3:
                return DHCPREQUEST;
            case 4:
                return DHCPDECLINE;
            case 5:
                return DHCPACK;
            case 6:
                return DHCPNAK;
            case 7:
                return DHCPRELEASE;
            case 8:
                return DHCPINFORM;
            case 9:
                return DHCPFORCERENEW;
            case 10:
                return DHCPLEASEQUERY;
            case 11:
                return DHCPLEASEUNASSIGNED;
            case 12:
                return DHCPLEASEUNKNOWN;
            case 13:
                return DHCPLEASEACTIVE;
        }
        
        return null;
    }
}