#ifndef NITPICKER_IP_H
#define NITPICKER_IP_H

#include <sys/types.h>
#include <netinet/in.h>

#include "types.h"

/*
 * IP Header 
 */

#define TCPTYPE 6
#define UDPTYPE 17
#define ICMPTYPE 1

#define tcp_sport prot.tcp.sport
#define tcp_dport prot.tcp.dport
#define udp_sport prot.udp.sport
#define udp_dport prot.udp.dport
#define icmp_type prot.icmp.type
#define icmp_subcode prot.icmp.subcode

#define printip( buf,  addr ) sprintf(buf, "%lu.%lu.%lu.%lu", \
           addr&0xff,( addr >> 8)&0xff,(addr >> 16)&0xff, addr >> 24);
//        addr >> 24, (addr >> 16)&0xff, (addr >> 8)&0xff, addr&0xff )

union ipprot {
    struct {
        uint16      sport;   /* src Port */
        uint16      dport;   /* dst Port */
    } tcp;
    struct {
        uint16      sport;   /* src Port */
        uint16      dport;   /* dst Port */
    } udp;
    struct {
        unsigned char type;  /* icmp type */
        unsigned char subcode;  /* icmp code */
    } icmp;
};

struct ip_t
{
   char	  filler1[2];	/* Version, Headerlength, TOS */
   uint16        len;	/* Total IP-Length */
   char   filler2[5];	/* id, offset, ttl */
   u_char     typenr;	/* Protocol Type */
   char   filler3[2];	/* Checksup */
   uint32        sip;   /* src IP */
   uint32        dip;   /* dst IP */

   union ipprot prot;
};

#endif