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/*
* $Id: nettypes.h,v 1.2 2005/02/16 06:01:26 jpr5 Exp $
*
* Because Windows standard headers are woefully inadequate for (real)
* network application development, and because I'm basically lazy, I
* created this header as a container for the types ngrep needs.
*
* The orginal ngrep port to Windows was completed by
* Mike Davis <mike@eEye.com>. Unfortunately, I wasn't able to
* figure out how he did the headers, so I had to redo a lot on my own.
* Please pardon the hack.
*/
typedef unsigned char u_int8_t;
typedef unsigned short u_int16_t;
typedef unsigned long u_int32_t;
#define IP_RF 0x8000 /* reserved fragment flag */
#define IP_DF 0x4000 /* dont fragment flag */
#define IP_MF 0x2000 /* more fragments flag */
#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
struct ip {
u_int8_t ip_hl:4; /* header length */
u_int8_t ip_v:4; /* version */
u_int8_t ip_tos; /* type of service */
u_int16_t ip_len; /* total length */
u_int16_t ip_id; /* identification */
u_int16_t ip_off; /* fragment offset field */
u_int8_t ip_ttl; /* time to live */
u_int8_t ip_p; /* protocol */
u_int16_t ip_sum; /* checksum */
struct in_addr ip_src, ip_dst; /* source and dest address */
};
#define TH_FIN 0x01
#define TH_SYN 0x02
#define TH_RST 0x04
#define TH_PUSH 0x08
#define TH_ACK 0x10
#define TH_URG 0x20
typedef u_int32_t tcp_seq;
struct tcphdr {
u_int16_t th_sport; /* source port */
u_int16_t th_dport; /* destination port */
tcp_seq th_seq; /* sequence number */
tcp_seq th_ack; /* acknowledgement number */
u_int8_t th_x2:4; /* (unused) */
u_int8_t th_off:4; /* data offset */
u_int8_t th_flags;
u_int16_t th_win; /* window */
u_int16_t th_sum; /* checksum */
u_int16_t th_urp; /* urgent pointer */
};
struct udphdr {
u_int16_t uh_sport; /* source port */
u_int16_t uh_dport; /* destination port */
u_int16_t uh_ulen; /* udp length */
u_int16_t uh_sum; /* udp checksum */
};
struct icmp {
u_int8_t icmp_type;
u_int8_t icmp_code;
u_int16_t icmp_cksum;
union {
u_int8_t ih_pptr;
struct in_addr ih_gwaddr;
struct ih_idseq {
u_int16_t icd_id;
u_int16_t icd_seq;
} ih_idseq;
u_int32_t ih_void;
struct ih_pmtu {
u_int16_t ipm_void;
u_int16_t ipm_nextmtu;
} ih_pmtu;
struct ih_rtradv {
u_int8_t irt_num_addrs;
u_int8_t irt_wpa;
u_int16_t irt_lifetime;
} ih_rtradv;
} icmp_hun;
};
struct igmp {
u_int8_t igmp_type; /* IGMP type */
u_int8_t igmp_code; /* routing code */
u_int16_t igmp_cksum; /* checksum */
struct in_addr igmp_group; /* group address */
};
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