
/***************************************************************************
 * EthernetHeader.h -- The EthernetHeader Class represents an Ethernet     *
 * header and footer. It contains methods to set the different header      *
 * fields. These methods tipically perform the necessary error checks and  *
 * byte order conversions.                                                 *
 *                                                                         *
 ***********************IMPORTANT NMAP LICENSE TERMS************************
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 ***************************************************************************/

#ifndef ETHERNETHEADER_H
#define ETHERNETHEADER_H 1

#include "DataLinkLayerElement.h"

/* Ether Types. (From RFC 5342 http://www.rfc-editor.org/rfc/rfc5342.txt)     */
#define ETHTYPE_IPV4       0x0800 /* Internet Protocol Version 4              */
#define ETHTYPE_ARP        0x0806 /* Address Resolution Protocol              */
#define ETHTYPE_FRAMERELAY 0x0808 /* Frame Relay ARP                          */
#define ETHTYPE_PPTP       0x880B /* Point-to-Point Tunneling Protocol        */
#define ETHTYPE_GSMP       0x880C /* General Switch Management Protocol       */
#define ETHTYPE_RARP       0x8035 /* Reverse Address Resolution Protocol      */
#define ETHTYPE_IPV6       0x86DD /* Internet Protocol Version 6              */
#define ETHTYPE_MPLS       0x8847 /* MPLS                                     */
#define ETHTYPE_MPS_UAL    0x8848 /* MPLS with upstream-assigned label        */
#define ETHTYPE_MCAP       0x8861 /* Multicast Channel Allocation Protocol    */
#define ETHTYPE_PPPOE_D    0x8863 /* PPP over Ethernet Discovery Stage        */
#define ETHTYPE_PPOE_S     0x8864 /* PPP over Ethernet Session Stage          */
#define ETHTYPE_CTAG       0x8100 /* Customer VLAN Tag Type                   */
#define ETHTYPE_EPON       0x8808 /* Ethernet Passive Optical Network         */
#define ETHTYPE_PBNAC      0x888E /* Port-based network access control        */
#define ETHTYPE_STAG       0x88A8 /* Service VLAN tag identifier              */
#define ETHTYPE_ETHEXP1    0x88B5 /* Local Experimental Ethertype             */
#define ETHTYPE_ETHEXP2    0x88B6 /* Local Experimental Ethertype             */
#define ETHTYPE_ETHOUI     0x88B7 /* OUI Extended Ethertype                   */
#define ETHTYPE_PREAUTH    0x88C7 /* Pre-Authentication                       */
#define ETHTYPE_LLDP       0x88CC /* Link Layer Discovery Protocol (LLDP)     */
#define ETHTYPE_MACSEC     0x88E5 /* Media Access Control Security            */
#define ETHTYPE_MVRP       0x88F5 /* Multiple VLAN Registration Protocol      */
#define ETHTYPE_MMRP       0x88F6 /* Multiple Multicast Registration Protocol */
#define ETHTYPE_FRRR       0x890D /* Fast Roaming Remote Request              */

/* Lengths */
#define ETH_HEADER_LEN 14
#define ETH_FOOTER_LEN 2

class EthernetHeader : public DataLinkLayerElement {

    private:

        struct nping_eth_hdr{
          u8 eth_dmac[6];
          u8 eth_smac[6];
          u16 eth_type;
        }__attribute__((__packed__));

        typedef struct nping_eth_hdr nping_eth_hdr_t;

        nping_eth_hdr_t h;

        struct my_eth_ftr{
            u32 crc;
        }f;

    public:
    
        EthernetHeader();
        ~EthernetHeader();
        void reset();
        u8 *getBufferPointer();
        int storeRecvData(const u8 *buf, size_t len);

        int setSrcMAC(const u8 *m);
        int setSrcMAC_str(char *m);
        u8 *getSrcMAC();

        int setDstMAC(u8 *m);
        int setDstMAC(char *m);
        u8 *getDstMAC();

        int setEtherType(u16 val);
        u16 getEtherType();

        int setSum();
        int setSum(u32 s);
        int setSumRandom();
        u32 getSum();

};

#endif
