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/*
* $Id: types.h,v 1.3 2005/05/04 19:05:43 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.
*
* These include standard types like u*int*_t's, as well as network
* protocol-specific structures and types.
*/
typedef unsigned char u_int8_t;
typedef unsigned short int u_int16_t;
typedef unsigned int u_int32_t;
typedef unsigned char uint8_t;
typedef unsigned short int uint16_t;
typedef unsigned int uint32_t;
typedef signed char int8_t;
typedef signed short int int16_t;
typedef signed int 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 */
};
/*
* Taken from arpa/namser.h, used by inet_?to?() (Win32 support).
*/
#define NS_INADDRSZ 4
#define NS_IN6ADDRSZ 16 /* IPv6 T_AAAA */
#define NS_INT16SZ 2 /* #/bytes of data in a u_int16_t */
/*
* IPv6 and ICMPv6 declarations.
*/
/* IPv6 address */
struct UNIX_in6_addr {
union {
uint8_t u6_addr8[16];
uint16_t u6_addr16[8];
uint32_t u6_addr32[4];
} in6_u;
};
struct ip6_hdr {
union {
struct ip6_hdrctl {
uint32_t ip6_un1_flow; /* 4 bits version, 8 bits TC,
20 bits flow-ID */
uint16_t ip6_un1_plen; /* payload length */
uint8_t ip6_un1_nxt; /* next header */
uint8_t ip6_un1_hlim; /* hop limit */
} ip6_un1;
uint8_t ip6_un2_vfc; /* 4 bits version, top 4 bits tclass */
} ip6_ctlun;
struct UNIX_in6_addr ip6_src; /* source address */
struct UNIX_in6_addr ip6_dst; /* destination address */
};
#define ip6_vfc ip6_ctlun.ip6_un2_vfc
#define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow
#define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen
#define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt
#define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim
#define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim
/* Fragment header */
struct ip6_frag {
uint8_t ip6f_nxt; /* next header */
uint8_t ip6f_reserved; /* reserved field */
uint16_t ip6f_offlg; /* offset, reserved, and flag */
uint32_t ip6f_ident; /* identification */
};
#if BYTE_ORDER == BIG_ENDIAN
#define IP6F_OFF_MASK 0xfff8 /* mask out offset from _offlg */
#define IP6F_RESERVED_MASK 0x0006 /* reserved bits in ip6f_offlg */
#define IP6F_MORE_FRAG 0x0001 /* more-fragments flag */
#else /* BYTE_ORDER == LITTLE_ENDIAN */
#define IP6F_OFF_MASK 0xf8ff /* mask out offset from _offlg */
#define IP6F_RESERVED_MASK 0x0600 /* reserved bits in ip6f_offlg */
#define IP6F_MORE_FRAG 0x0100 /* more-fragments flag */
#endif
struct icmp6_hdr {
uint8_t icmp6_type; /* type field */
uint8_t icmp6_code; /* code field */
uint16_t icmp6_cksum; /* checksum field */
union {
uint32_t icmp6_un_data32[1]; /* type-specific field */
uint16_t icmp6_un_data16[2]; /* type-specific field */
uint8_t icmp6_un_data8[4]; /* type-specific field */
} icmp6_dataun;
};
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