/*
* $Id: libnet-headers.h,v 1.1 2003/05/20 17:42:38 skyper Exp $
*
* libnet-headers.h - Network routine library headers header file
*
* Copyright (c) 1998 - 2001 Mike D. Schiffman <mike@infonexus.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#ifndef __LIBNET_HEADERS_H
#define __LIBNET_HEADERS_H
/*
* Standard (IPv4) header sizes in bytes.
*/
#define LIBNET_ARP_H 0x1c /* ARP header: 28 bytes */
#define LIBNET_DNS_H 0xc /* DNS header base: 12 bytes */
#define LIBNET_ETH_H 0xe /* Etherner header: 14 bytes */
#define LIBNET_ICMP_H 0x4 /* ICMP header base: 4 bytes */
#define LIBNET_ICMP_ECHO_H 0x8 /* ICMP_ECHO header: 8 bytes */
#define LIBNET_ICMP_MASK_H 0xc /* ICMP_MASK header: 12 bytes */
#define LIBNET_ICMP_UNREACH_H 0x8 /* ICMP_UNREACH header: 8 bytes */
#define LIBNET_ICMP_TIMXCEED_H 0x8 /* ICMP_TIMXCEED header: 8 bytes */
#define LIBNET_ICMP_REDIRECT_H 0x8 /* ICMP_REDIRECT header: 8 bytes */
#define LIBNET_ICMP_TS_H 0x14 /* ICMP_TIMESTAMP headr:20 bytes */
#define LIBNET_IGMP_H 0x8 /* IGMP header: 8 bytes */
#define LIBNET_IP_H 0x14 /* IP header: 20 bytes */
/* See libnet-ospf.h for OSPF related header sizes */
#define LIBNET_RIP_H 0x18 /* RIP header base: 24 bytes */
#define LIBNET_TCP_H 0x14 /* TCP header: 20 bytes */
#define LIBNET_UDP_H 0x8 /* UDP header: 8 bytes */
#define LIBNET_VRRP_H 0x8 /* VRRP header: 8 bytes */
/*
* Concession to legacy naming scheme.
*/
#define ARP_H LIBNET_ARP_H
#define DNS_H LIBNET_DNS_H
#define ETH_H LIBNET_ETH_H
#define ICMP_H LIBNET_ICMP_H
#define ICMP_ECHO_H LIBNET_ICMP_ECHO_H
#define ICMP_MASK_H LIBNET_ICMP_MASK_H
#define ICMP_UNREACH_H LIBNET_ICMP_UNREACH_H
#define ICMP_TIMXCEED_H LIBNET_ICMP_TIMXCEED_H
#define ICMP_REDIRECT_H LIBNET_ICMP_REDIRECT_H
#define ICMP_TS_H LIBNET_ICMP_TS_H
#define IGMP_H LIBNET_IGMP_H
#define IP_H LIBNET_IP_H
#define RIP_H LIBNET_RIP_H
#define TCP_H LIBNET_TCP_H
#define UDP_H LIBNET_UDP_H
/*
* IPv4 packet header prototype.
*/
struct libnet_ip_hdr
{
#if (LIBNET_LIL_ENDIAN)
u_char ip_hl:4, /* header length */
ip_v:4; /* version */
#endif
#if (LIBNET_BIG_ENDIAN)
u_char ip_v:4, /* version */
ip_hl:4; /* header length */
#endif
u_char ip_tos; /* type of service */
u_short ip_len; /* total length */
u_short ip_id; /* identification */
u_short ip_off;
#ifndef IP_RF
#define IP_RF 0x8000 /* reserved fragment flag */
#endif
#ifndef IP_DF
#define IP_DF 0x4000 /* dont fragment flag */
#endif
#ifndef IP_MF
#define IP_MF 0x2000 /* more fragments flag */
#endif
#ifndef IP_OFFMASK
#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
#endif
u_char ip_ttl; /* time to live */
u_char ip_p; /* protocol */
u_short ip_sum; /* checksum */
struct in_addr ip_src, ip_dst; /* source and dest address */
};
/*
* TCP packet header prototype.
*/
struct libnet_tcp_hdr
{
u_short th_sport; /* source port */
u_short th_dport; /* destination port */
u_long th_seq; /* sequence number */
u_long th_ack; /* acknowledgement number */
#if (LIBNET_LIL_ENDIAN)
u_char th_x2:4, /* (unused) */
th_off:4; /* data offset */
#endif
#if (LIBNET_BIG_ENDIAN)
u_char th_off:4, /* data offset */
th_x2:4; /* (unused) */
#endif
u_char th_flags; /* control flags */
#ifndef TH_FIN
#define TH_FIN 0x01
#endif
#ifndef TH_SYN
#define TH_SYN 0x02
#endif
#ifndef TH_RST
#define TH_RST 0x04
#endif
#ifndef TH_PUSH
#define TH_PUSH 0x08
#endif
#ifndef TH_ACK
#define TH_ACK 0x10
#endif
#ifndef TH_URG
#define TH_URG 0x20
#endif
u_short th_win; /* window */
u_short th_sum; /* checksum */
u_short th_urp; /* urgent pointer */
};
/*
* UDP packet header prototype.
*/
struct libnet_udp_hdr
{
u_short uh_sport; /* soure port */
u_short uh_dport; /* destination port */
u_short uh_ulen; /* length */
u_short uh_sum; /* checksum */
};
/*
* ICMP packet header prototype.
*/
struct libnet_icmp_hdr
{
u_char icmp_type;
/*
* ICMP types.
*/
#ifndef ICMP_ECHOREPLY
#define ICMP_ECHOREPLY 0
#endif
#ifndef ICMP_UNREACH
#define ICMP_UNREACH 3
#endif
#ifndef ICMP_SOURCEQUENCH
#define ICMP_SOURCEQUENCH 4
#endif
#ifndef ICMP_REDIRECT
#define ICMP_REDIRECT 5
#endif
#ifndef ICMP_ECHO
#define ICMP_ECHO 8
#endif
#ifndef ICMP_ROUTERADVERT
#define ICMP_ROUTERADVERT 9
#endif
#ifndef ICMP_ROUTERSOLICIT
#define ICMP_ROUTERSOLICIT 10
#endif
#ifndef ICMP_TIMXCEED
#define ICMP_TIMXCEED 11
#endif
#ifndef ICMP_PARAMPROB
#define ICMP_PARAMPROB 12
#endif
#ifndef ICMP_TSTAMP
#define ICMP_TSTAMP 13
#endif
#ifndef ICMP_TSTAMPREPLY
#define ICMP_TSTAMPREPLY 14
#endif
#ifndef ICMP_IREQ
#define ICMP_IREQ 15
#endif
#ifndef ICMP_IREQREPLY
#define ICMP_IREQREPLY 16
#endif
#ifndef ICMP_MASKREQ
#define ICMP_MASKREQ 17
#endif
#ifndef ICMP_MASKREPLY
#define ICMP_MASKREPLY 18
#endif
u_char icmp_code;
/*
* ICMP codes.
*/
#ifndef ICMP_UNREACH_NET
#define ICMP_UNREACH_NET 0
#endif
#ifndef ICMP_UNREACH_HOST
#define ICMP_UNREACH_HOST 1
#endif
#ifndef ICMP_UNREACH_PROTOCOL
#define ICMP_UNREACH_PROTOCOL 2
#endif
#ifndef ICMP_UNREACH_PORT
#define ICMP_UNREACH_PORT 3
#endif
#ifndef ICMP_UNREACH_NEEDFRAG
#define ICMP_UNREACH_NEEDFRAG 4
#endif
#ifndef ICMP_UNREACH_SRCFAIL
#define ICMP_UNREACH_SRCFAIL 5
#endif
#ifndef ICMP_UNREACH_NET_UNKNOWN
#define ICMP_UNREACH_NET_UNKNOWN 6
#endif
#ifndef ICMP_UNREACH_HOST_UNKNOWN
#define ICMP_UNREACH_HOST_UNKNOWN 7
#endif
#ifndef ICMP_UNREACH_ISOLATED
#define ICMP_UNREACH_ISOLATED 8
#endif
#ifndef ICMP_UNREACH_NET_PROHIB
#define ICMP_UNREACH_NET_PROHIB 9
#endif
#ifndef ICMP_UNREACH_HOST_PROHIB
#define ICMP_UNREACH_HOST_PROHIB 10
#endif
#ifndef ICMP_UNREACH_TOSNET
#define ICMP_UNREACH_TOSNET 11
#endif
#ifndef ICMP_UNREACH_TOSHOST
#define ICMP_UNREACH_TOSHOST 12
#endif
#ifndef ICMP_UNREACH_FILTER_PROHIB
#define ICMP_UNREACH_FILTER_PROHIB 13
#endif
#ifndef ICMP_UNREACH_HOST_PRECEDENCE
#define ICMP_UNREACH_HOST_PRECEDENCE 14
#endif
#ifndef ICMP_UNREACH_PRECEDENCE_CUTOFF
#define ICMP_UNREACH_PRECEDENCE_CUTOFF 15
#endif
#ifndef ICMP_REDIRECT_NET
#define ICMP_REDIRECT_NET 0
#endif
#ifndef ICMP_REDIRECT_HOST
#define ICMP_REDIRECT_HOST 1
#endif
#ifndef ICMP_REDIRECT_TOSNET
#define ICMP_REDIRECT_TOSNET 2
#endif
#ifndef ICMP_REDIRECT_TOSHOST
#define ICMP_REDIRECT_TOSHOST 3
#endif
#ifndef ICMP_TIMXCEED_INTRANS
#define ICMP_TIMXCEED_INTRANS 0
#endif
#ifndef ICMP_TIMXCEED_REASS
#define ICMP_TIMXCEED_REASS 1
#endif
#ifndef ICMP_PARAMPROB_OPTABSENT
#define ICMP_PARAMPROB_OPTABSENT 1
#endif
u_short icmp_sum;
union
{
struct
{
u_short id;
u_short seq;
}echo;
#undef icmp_id
#undef icmp_seq
#define icmp_id hun.echo.id
#define icmp_seq hun.echo.seq
u_long gateway;
struct
{
u_short pad;
u_short mtu;
}frag;
}hun;
union
{
struct
{
n_time its_otime;
n_time its_rtime;
n_time its_ttime;
}ts;
struct
{
struct ip idi_ip;
/* options and then 64 bits of data */
}ip;
u_long mask;
char data[1];
#undef icmp_mask
#define icmp_mask dun.mask
#undef icmp_data
#define icmp_data dun.data
#undef icmp_otime
#define icmp_otime dun.ts.its_otime
#undef icmp_rtime
#define icmp_rtime dun.ts.its_rtime
#undef icmp_ttime
#define icmp_ttime dun.ts.its_ttime
}dun;
};
/*
* IGMP header.
*/
struct libnet_igmp_hdr
{
u_char igmp_type;
#ifndef IGMP_MEMBERSHIP_QUERY
#define IGMP_MEMBERSHIP_QUERY 0x11 /* membership query */
#endif
#ifndef IGMP_V1_MEMBERSHIP_REPORT
#define IGMP_V1_MEMBERSHIP_REPORT 0x12 /* Ver. 1 membership report */
#endif
#ifndef IGMP_V2_MEMBERSHIP_REPORT
#define IGMP_V2_MEMBERSHIP_REPORT 0x16 /* Ver. 2 membership report */
#endif
#ifndef IGMP_LEAVE_GROUP
#define IGMP_LEAVE_GROUP 0x17 /* Leave-group message */
#endif
u_char igmp_code;
u_short igmp_sum;
struct in_addr igmp_group;
};
/*
* Ethernet packet header prototype. Too many O/S's define this differently.
* Easy enough to solve that and define it here.
*/
struct libnet_ethernet_hdr
{
#ifndef ETHER_ADDR_LEN
#define ETHER_ADDR_LEN 6
#endif
u_char ether_dhost[ETHER_ADDR_LEN]; /* destination ethernet address */
u_char ether_shost[ETHER_ADDR_LEN]; /* source ethernet address */
u_short ether_type; /* packet type ID */
};
#define ETHERTYPE_PUP 0x0200 /* PUP protocol */
#define ETHERTYPE_IP 0x0800 /* IP protocol */
#define ETHERTYPE_ARP 0x0806 /* Addr. resolution protocol */
#define ETHERTYPE_REVARP 0x8035 /* reverse Addr. resolution protocol */
#define ETHERTYPE_VLAN 0x8100 /* IEEE 802.1Q VLAN tagging */
#define ETHERTYPE_LOOPBACK 0x9000 /* used to test interfaces */
#if (!__GLIBC__)
struct ether_addr
{
u_char ether_addr_octet[6];
};
#endif
/*
* ARP packet header prototype. Too many O/S's define this differently.
* Easy enough to solve that and define it here.
*/
struct libnet_arp_hdr
{
u_short ar_hrd; /* format of hardware address */
#define ARPHRD_ETHER 1 /* ethernet hardware format */
u_short ar_pro; /* format of protocol address */
u_char ar_hln; /* length of hardware address */
u_char ar_pln; /* length of protocol addres */
u_short ar_op; /* operation type */
#define ARPOP_REQUEST 1 /* req to resolve address */
#define ARPOP_REPLY 2 /* resp to previous request */
#define ARPOP_REVREQUEST 3 /* req protocol address given hardware */
#define ARPOP_REVREPLY 4 /* resp giving protocol address */
#define ARPOP_INVREQUEST 8 /* req to identify peer */
#define ARPOP_INVREPLY 9 /* resp identifying peer */
/*
* These should implementation defined but I've hardcoded eth/IP.
*/
u_char ar_sha[6]; /* sender hardware address */
u_char ar_spa[4]; /* sender protocol address */
u_char ar_tha[6]; /* target hardware address */
u_char ar_tpa[4]; /* target protocol address */
};
/*
* Base DNS header.
*/
struct libnet_dns_hdr
{
u_short id; /* DNS packet ID */
u_short flags; /* DNS flags */
u_short num_q; /* Number of questions */
u_short num_answ_rr; /* Number of answer resource records */
u_short num_auth_rr; /* Number of authority resource records */
u_short num_addi_rr; /* Number of additional resource records */
};
/*
* Base RIP (routing information protocol) header.
*/
struct libnet_rip_hdr
{
u_char cmd; /* RIP command */
#define RIPCMD_REQUEST 1 /* want info */
#define RIPCMD_RESPONSE 2 /* responding to request */
#define RIPCMD_TRACEON 3 /* turn tracing on */
#define RIPCMD_TRACEOFF 4 /* turn it off */
#define RIPCMD_POLL 5 /* like request, but anyone answers */
#define RIPCMD_POLLENTRY 6 /* like poll, but for entire entry */
#define RIPCMD_MAX 7
u_char ver; /* RIP version */
#define RIPVER_0 0
#define RIPVER_1 1
#define RIPVER_2 2
u_short rd; /* Zero (v1) or Routing Domain (v2) */
u_short af; /* Address family */
u_short rt; /* Zero (v1) or Route Tag (v2) */
u_long addr; /* IP address */
u_long mask; /* Zero (v1) or Subnet Mask (v2) */
u_long next_hop; /* Zero (v1) or Next hop IP address (v2) */
u_long metric; /* Metric */
};
/*
* VRRP packet header prototype.
*/
#ifndef IPPROTO_VRRP
#define IPPROTO_VRRP 112
#endif
struct libnet_vrrp_hdr
{
#if (LIBNET_LIL_ENDIAN)
u_char vrrp_v:4, /* protocol version */
vrrp_t:4; /* packet type */
#endif
#if (LIBNET_BIG_ENDIAN)
u_char vrrp_t:4, /* packet type */
vrrp_v:4; /* protocol version */
#endif
#define LIBNET_VRRP_TYPE_ADVERT 0x1
u_char vrrp_vrouter_id; /* virtual router id */
u_char vrrp_priority; /* priority */
u_char vrrp_ip_count; /* number of IP addresses */
u_char vrrp_auth_type; /* authorization type */
#define LIBNET_VRRP_AUTH_NONE 0x1
#define LIBNET_VRRP_AUTH_PASSWD 0x2
#define LIBNET_VRRP_AUTH_IPAH 0x3
u_char vrrp_advert_int; /* advertisement interval */
u_short vrrp_sum; /* checksum */
};
#if 0
struct libnet_snmp_hdr
{
/* ASN.1 BER support first */
};
#endif
/*
* TCP options structure.
*/
struct tcpoption
{
u_char tcpopt_list[MAX_IPOPTLEN];
};
#if (__linux__)
/*
* Linux has a radically different IP options structure from BSD.
*/
struct ipoption
{
struct in_addr ipopt_dst; /* first-hop dst if source routed */
char ipopt_list[MAX_IPOPTLEN]; /* options proper */
};
#endif
#endif /* __LIBNET_HEADERS_H */
/* EOF */
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