182 lines
5.3 KiB
C
182 lines
5.3 KiB
C
/*
|
|
*****************************************************************************
|
|
*
|
|
* File: netinet_common.h
|
|
*
|
|
* Purpose: Header file for common network packet structures. We roll our
|
|
* own (actually copy) here in an effort to reduce the cross-
|
|
* platform "hoop-jumping" we would need to do).
|
|
*
|
|
* Fwknop is developed primarily by the people listed in the file 'AUTHORS'.
|
|
* Copyright (C) 2009-2014 fwknop developers and contributors. For a full
|
|
* list of contributors, see the file 'CREDITS'.
|
|
*
|
|
* License (GNU General Public License):
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
|
* USA
|
|
*
|
|
*****************************************************************************
|
|
*/
|
|
#ifndef NETINET_COMMON_H
|
|
#define NETINET_COMMON_H
|
|
|
|
#ifdef WIN32
|
|
#include <winsock2.h>
|
|
#include <ws2tcpip.h>
|
|
#else
|
|
#if HAVE_SYS_SOCKET_H
|
|
#include <sys/socket.h>
|
|
#endif
|
|
#if HAVE_NETDB_H
|
|
#include <netdb.h>
|
|
#endif
|
|
#if HAVE_NETINET_IN_H
|
|
#include <netinet/in.h>
|
|
#endif
|
|
#if PLATFORM_OPENBSD /* OpenBSD hack due to autoconf net/if.h difficulties */
|
|
#include <net/if.h>
|
|
#include <net/ethertypes.h>
|
|
#include <netinet/if_ether.h>
|
|
#ifndef ETHER_IS_VALID_LEN
|
|
#define ETHER_IS_VALID_LEN(x) \
|
|
((x) >= ETHER_MIN_LEN && (x) <= ETHER_MAX_LEN)
|
|
#endif
|
|
#endif
|
|
#if HAVE_ARPA_INET_H
|
|
#include <arpa/inet.h>
|
|
#endif
|
|
#if HAVE_NET_ETHERNET_H
|
|
#include <net/ethernet.h>
|
|
#elif HAVE_SYS_ETHERNET_H
|
|
#include <sys/ethernet.h> /* Seems to be where Solaris puts it. */
|
|
/* Also probably need to define ETHER_IS_VALID_LEN here */
|
|
#ifndef ETHER_IS_VALID_LEN
|
|
#define ETHER_IS_VALID_LEN(x) \
|
|
((x) >= ETHERMIN && (x) <= ETHERMAX)
|
|
#endif
|
|
#endif
|
|
#endif
|
|
|
|
/* We will roll our own packet header structs. */
|
|
|
|
/* The IP header
|
|
*/
|
|
struct iphdr
|
|
{
|
|
#if __BYTE_ORDER == __LITTLE_ENDIAN
|
|
unsigned int ihl:4;
|
|
unsigned int version:4;
|
|
#elif __BYTE_ORDER == __BIG_ENDIAN
|
|
unsigned int version:4;
|
|
unsigned int ihl:4;
|
|
#else
|
|
#error "Please fix <bits/endian.h>"
|
|
#endif
|
|
unsigned char tos;
|
|
unsigned short tot_len;
|
|
unsigned short id;
|
|
unsigned short frag_off;
|
|
unsigned char ttl;
|
|
unsigned char protocol;
|
|
unsigned short check;
|
|
unsigned int saddr;
|
|
unsigned int daddr;
|
|
};
|
|
|
|
/* The TCP header
|
|
*/
|
|
struct tcphdr
|
|
{
|
|
unsigned short source;
|
|
unsigned short dest;
|
|
unsigned int seq;
|
|
unsigned int ack_seq;
|
|
#if __BYTE_ORDER == __LITTLE_ENDIAN
|
|
unsigned short res1:4;
|
|
unsigned short doff:4;
|
|
unsigned short fin:1;
|
|
unsigned short syn:1;
|
|
unsigned short rst:1;
|
|
unsigned short psh:1;
|
|
unsigned short ack:1;
|
|
unsigned short urg:1;
|
|
unsigned short res2:2;
|
|
#elif __BYTE_ORDER == __BIG_ENDIAN
|
|
unsigned short doff:4;
|
|
unsigned short res1:4;
|
|
unsigned short res2:2;
|
|
unsigned short urg:1;
|
|
unsigned short ack:1;
|
|
unsigned short psh:1;
|
|
unsigned short rst:1;
|
|
unsigned short syn:1;
|
|
unsigned short fin:1;
|
|
#else
|
|
#error "Adjust your <bits/endian.h> defines"
|
|
#endif
|
|
unsigned short window;
|
|
unsigned short check;
|
|
unsigned short urg_ptr;
|
|
};
|
|
|
|
/* The UDP header
|
|
*/
|
|
struct udphdr {
|
|
unsigned short source; /* source port */
|
|
unsigned short dest; /* destination port */
|
|
unsigned short len; /* udp length */
|
|
unsigned short check; /* udp checksum */
|
|
};
|
|
|
|
/* The ICMP header
|
|
*/
|
|
struct icmphdr
|
|
{
|
|
unsigned char type; /* message type */
|
|
unsigned char code; /* type sub-code */
|
|
unsigned short checksum;
|
|
union
|
|
{
|
|
struct
|
|
{
|
|
unsigned short id;
|
|
unsigned short sequence;
|
|
} echo; /* echo datagram */
|
|
unsigned int gateway; /* gateway address */
|
|
struct
|
|
{
|
|
unsigned short __notused;
|
|
unsigned short mtu;
|
|
} frag; /* path mtu discovery */
|
|
} un;
|
|
};
|
|
|
|
#define ICMP_ECHOREPLY 0 /* Echo Reply */
|
|
#define ICMP_DEST_UNREACH 3 /* Destination Unreachable */
|
|
#define ICMP_SOURCE_QUENCH 4 /* Source Quench */
|
|
#define ICMP_REDIRECT 5 /* Redirect (change route) */
|
|
#define ICMP_ECHO 8 /* Echo Request */
|
|
#define ICMP_TIME_EXCEEDED 11 /* Time Exceeded */
|
|
#define ICMP_PARAMETERPROB 12 /* Parameter Problem */
|
|
#define ICMP_TIMESTAMP 13 /* Timestamp Request */
|
|
#define ICMP_TIMESTAMPREPLY 14 /* Timestamp Reply */
|
|
#define ICMP_INFO_REQUEST 15 /* Information Request */
|
|
#define ICMP_INFO_REPLY 16 /* Information Reply */
|
|
#define ICMP_ADDRESS 17 /* Address Mask Request */
|
|
#define ICMP_ADDRESSREPLY 18 /* Address Mask Reply */
|
|
|
|
#endif /* NETINET_COMMON_H */
|