dhcp-header.h

Go to the documentation of this file.

/*
 * Copyright (c) 2011 UPB
 * Copyright (c) 2017 NITK Surathkal
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * 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
 *
 * Author: Radu Lupu <rlupu@elcom.pub.ro>
 *         Ankit Deepak <adadeepak8@gmail.com>
 *         Deepti Rajagopal <deeptir96@gmail.com>
 *
 */
 
#ifndef DHCP_HEADER_H
#define DHCP_HEADER_H
 
#include "ns3/address.h"
#include "ns3/buffer.h"
#include "ns3/header.h"
#include "ns3/ipv4-address.h"
 
namespace ns3
{
 
class DhcpHeader : public Header
{
  public:
    static TypeId GetTypeId();
 
    DhcpHeader();
 
    ~DhcpHeader() override;
 
    enum Options
    {
        OP_MASK = 1,     
        OP_ROUTE = 3,    
        OP_ADDREQ = 50,  
        OP_LEASE = 51,   
        OP_MSGTYPE = 53, 
        OP_SERVID = 54,  
        OP_RENEW = 58,   
        OP_REBIND = 59,  
        OP_END = 255     
    };
 
    enum Messages
    {
        DHCPDISCOVER = 0, 
        DHCPOFFER = 1,    
        DHCPREQ = 2,      
        DHCPACK = 4,      
        DHCPNACK = 5      
    };
 
    void SetType(uint8_t type);
 
    uint8_t GetType() const;
 
    void SetHWType(uint8_t htype, uint8_t hlen);
 
    void SetTran(uint32_t tran);
 
    uint32_t GetTran() const;
 
    void SetTime();
 
    void SetChaddr(Address addr);
 
    void SetChaddr(uint8_t* addr, uint8_t len);
 
    Address GetChaddr();
 
    void SetYiaddr(Ipv4Address addr);
 
    Ipv4Address GetYiaddr() const;
 
    void SetDhcps(Ipv4Address addr);
 
    Ipv4Address GetDhcps() const;
 
    void SetReq(Ipv4Address addr);
 
    Ipv4Address GetReq() const;
 
    void SetMask(uint32_t addr);
 
    uint32_t GetMask() const;
 
    void SetRouter(Ipv4Address addr);
 
    Ipv4Address GetRouter() const;
 
    void SetLease(uint32_t time);
 
    uint32_t GetLease() const;
 
    void SetRenew(uint32_t time);
 
    uint32_t GetRenew() const;
 
    void SetRebind(uint32_t time);
 
    uint32_t GetRebind() const;
 
    void ResetOpt();
 
  private:
    TypeId GetInstanceTypeId() const override;
    void Print(std::ostream& os) const override;
    uint32_t GetSerializedSize() const override;
    void Serialize(Buffer::Iterator start) const override;
    uint32_t Deserialize(Buffer::Iterator start) override;
 
    uint8_t m_op;              
    uint8_t m_bootp;           
    uint8_t m_hType;           
    uint8_t m_hLen;            
    uint8_t m_hops;            
    uint32_t m_xid;            
    uint32_t m_mask;           
    uint32_t m_len;            
    uint16_t m_secs;           
    uint16_t m_flags;          
    uint8_t m_chaddr[16];      
    Ipv4Address m_yiAddr;      
    Ipv4Address m_ciAddr;      
    Ipv4Address m_siAddr;      
    Ipv4Address m_giAddr;      
    Ipv4Address m_dhcps;       
    Ipv4Address m_req;         
    Ipv4Address m_route;       
    uint8_t m_sname[64];       
    uint8_t m_file[128];       
    uint8_t m_magic_cookie[4]; 
    uint32_t m_lease;          
    uint32_t m_renew;          
    uint32_t m_rebind;         
    bool m_opt[255];           
};
 
} // namespace ns3
 
#endif /* DHCP_HEADER_H */