print-arcnet.c - platform/external/tcpdump - Git at Google

 /*
  * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
  *	The Regents of the University of California.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that: (1) source code distributions
  * retain the above copyright notice and this paragraph in its entirety, (2)
  * distributions including binary code include the above copyright notice and
  * this paragraph in its entirety in the documentation or other materials
  * provided with the distribution, and (3) all advertising materials mentioning
  * features or use of this software display the following acknowledgement:
  * ``This product includes software developed by the University of California,
  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
  * the University nor the names of its contributors may be used to endorse
  * or promote products derived from this software without specific prior
  * written permission.
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  *
  * From: NetBSD: print-arcnet.c,v 1.2 2000/04/24 13:02:28 itojun Exp
  */
 #ifndef lint
 static const char rcsid[] _U_ =
     "@(#) $Header: /tcpdump/master/tcpdump/print-arcnet.c,v 1.20 2005/04/06 21:32:38 mcr Exp $ (LBL)";
 #endif

 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif

 #include <tcpdump-stdinc.h>

 #include <stdio.h>
 #include <pcap.h>

 #include "interface.h"
 #include "arcnet.h"

 static int arcnet_encap_print(u_char arctype, const u_char *p,
     u_int length, u_int caplen);

 struct tok arctypemap[] = {
 	{ ARCTYPE_IP_OLD,	"oldip" },
 	{ ARCTYPE_ARP_OLD,	"oldarp" },
 	{ ARCTYPE_IP,		"ip" },
 	{ ARCTYPE_ARP,		"arp" },
 	{ ARCTYPE_REVARP,	"rarp" },
 	{ ARCTYPE_ATALK,	"atalk" },
 	{ ARCTYPE_BANIAN,	"banyan" },
 	{ ARCTYPE_IPX,		"ipx" },
 	{ ARCTYPE_INET6,	"ipv6" },
 	{ ARCTYPE_DIAGNOSE,	"diag" },
 	{ 0, 0 }
 };

 static inline void
 arcnet_print(const u_char *bp, u_int length, int phds, int flag, u_int seqid)
 {
 	const struct arc_header *ap;
 	const char *arctypename;


 	ap = (const struct arc_header *)bp;


 	if (qflag) {
 		(void)printf("%02x %02x %d: ",
 			     ap->arc_shost,
 			     ap->arc_dhost,
 			     length);
 		return;
 	}

 	arctypename = tok2str(arctypemap, "%02x", ap->arc_type);

 	if (!phds) {
 		(void)printf("%02x %02x %s %d: ",
 			     ap->arc_shost, ap->arc_dhost, arctypename,
 			     length);
 			     return;
 	}

 	if (flag == 0) {
 		(void)printf("%02x %02x %s seqid %04x %d: ",
 			ap->arc_shost, ap->arc_dhost, arctypename, seqid,
 			length);
 			return;
 	}

 	if (flag & 1)
 		(void)printf("%02x %02x %s seqid %04x "
 			"(first of %d fragments) %d: ",
 			ap->arc_shost, ap->arc_dhost, arctypename, seqid,
 			(flag + 3) / 2, length);
 	else
 		(void)printf("%02x %02x %s seqid %04x "
 			"(fragment %d) %d: ",
 			ap->arc_shost, ap->arc_dhost, arctypename, seqid,
 			flag/2 + 1, length);
 }

 /*
  * This is the top level routine of the printer.  'p' points
  * to the ARCNET header of the packet, 'h->ts' is the timestamp,
  * 'h->len' is the length of the packet off the wire, and 'h->caplen'
  * is the number of bytes actually captured.
  */
 u_int
 arcnet_if_print(const struct pcap_pkthdr *h, const u_char *p)
 {
 	u_int caplen = h->caplen;
 	u_int length = h->len;
 	const struct arc_header *ap;

 	int phds, flag = 0, archdrlen = 0;
 	u_int seqid = 0;
 	u_char arc_type;

 	if (caplen < ARC_HDRLEN) {
 		printf("[|arcnet]");
 		return (caplen);
 	}

 	ap = (const struct arc_header *)p;
 	arc_type = ap->arc_type;

 	switch (arc_type) {
 	default:
 		phds = 1;
 		break;
 	case ARCTYPE_IP_OLD:
 	case ARCTYPE_ARP_OLD:
 	case ARCTYPE_DIAGNOSE:
 		phds = 0;
 		archdrlen = ARC_HDRLEN;
 		break;
 	}

 	if (phds) {
 		if (caplen < ARC_HDRNEWLEN) {
 			arcnet_print(p, length, 0, 0, 0);
 			printf("[|phds]");
 			return (caplen);
 		}

 		if (ap->arc_flag == 0xff) {
 			if (caplen < ARC_HDRNEWLEN_EXC) {
 				arcnet_print(p, length, 0, 0, 0);
 				printf("[|phds extended]");
 				return (caplen);
 			}
 			flag = ap->arc_flag2;
 			seqid = ntohs(ap->arc_seqid2);
 			archdrlen = ARC_HDRNEWLEN_EXC;
 		} else {
 			flag = ap->arc_flag;
 			seqid = ntohs(ap->arc_seqid);
 			archdrlen = ARC_HDRNEWLEN;
 		}
 	}


 	if (eflag)
 		arcnet_print(p, length, phds, flag, seqid);

 	/*
 	 * Go past the ARCNET header.
 	 */
 	length -= archdrlen;
 	caplen -= archdrlen;
 	p += archdrlen;

 	if (phds && flag && (flag & 1) == 0) {
 		/*
 		 * This is a middle fragment.
 		 */
 		return (archdrlen);
 	}

 	if (!arcnet_encap_print(arc_type, p, length, caplen))
 		default_print(p, caplen);

 	return (archdrlen);
 }

 /*
  * This is the top level routine of the printer.  'p' points
  * to the ARCNET header of the packet, 'h->ts' is the timestamp,
  * 'h->len' is the length of the packet off the wire, and 'h->caplen'
  * is the number of bytes actually captured.  It is quite similar
  * to the non-Linux style printer except that Linux doesn't ever
  * supply packets that look like exception frames, it always supplies
  * reassembled packets rather than raw frames, and headers have an
  * extra "offset" field between the src/dest and packet type.
  */
 u_int
 arcnet_linux_if_print(const struct pcap_pkthdr *h, const u_char *p)
 {
 	u_int caplen = h->caplen;
 	u_int length = h->len;
 	const struct arc_linux_header *ap;

 	int archdrlen = 0;
 	u_char arc_type;

 	if (caplen < ARC_LINUX_HDRLEN) {
 		printf("[|arcnet]");
 		return (caplen);
 	}

 	ap = (const struct arc_linux_header *)p;
 	arc_type = ap->arc_type;

 	switch (arc_type) {
 	default:
 		archdrlen = ARC_LINUX_HDRNEWLEN;
 		if (caplen < ARC_LINUX_HDRNEWLEN) {
 			printf("[|arcnet]");
 			return (caplen);
 		}
 		break;
 	case ARCTYPE_IP_OLD:
 	case ARCTYPE_ARP_OLD:
 	case ARCTYPE_DIAGNOSE:
 		archdrlen = ARC_LINUX_HDRLEN;
 		break;
 	}

 	if (eflag)
 		arcnet_print(p, length, 0, 0, 0);

 	/*
 	 * Go past the ARCNET header.
 	 */
 	length -= archdrlen;
 	caplen -= archdrlen;
 	p += archdrlen;

 	if (!arcnet_encap_print(arc_type, p, length, caplen))
 		default_print(p, caplen);

 	return (archdrlen);
 }

 /*
  * Prints the packet encapsulated in an ARCnet data field,
  * given the ARCnet system code.
  *
  * Returns non-zero if it can do so, zero if the system code is unknown.
  */


 static int
 arcnet_encap_print(u_char arctype, const u_char *p,
     u_int length, u_int caplen)
 {
 	switch (arctype) {

 	case ARCTYPE_IP_OLD:
 	case ARCTYPE_IP:
 	        ip_print(gndo, p, length);
 		return (1);

 #ifdef INET6
 	case ARCTYPE_INET6:
 		ip6_print(p, length);
 		return (1);
 #endif /*INET6*/

 	case ARCTYPE_ARP_OLD:
 	case ARCTYPE_ARP:
 	case ARCTYPE_REVARP:
 	  arp_print(gndo, p, length, caplen);
 		return (1);

 	case ARCTYPE_ATALK:	/* XXX was this ever used? */
 		if (vflag)
 			fputs("et1 ", stdout);
 		atalk_print(p, length);
 		return (1);

 	case ARCTYPE_IPX:
 		ipx_print(p, length);
 		return (1);

 	default:
 		return (0);
 	}
 }

 /*
  * Local Variables:
  * c-style: bsd
  * End:
  */
	/*
	* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
	* The Regents of the University of California. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that: (1) source code distributions
	* retain the above copyright notice and this paragraph in its entirety, (2)
	* distributions including binary code include the above copyright notice and
	* this paragraph in its entirety in the documentation or other materials
	* provided with the distribution, and (3) all advertising materials mentioning
	* features or use of this software display the following acknowledgement:
	* ``This product includes software developed by the University of California,
	* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
	* the University nor the names of its contributors may be used to endorse
	* or promote products derived from this software without specific prior
	* written permission.
	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
	* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
	*
	* From: NetBSD: print-arcnet.c,v 1.2 2000/04/24 13:02:28 itojun Exp
	*/
	#ifndef lint
	static const char rcsid[] _U_ =
	"@(#) $Header: /tcpdump/master/tcpdump/print-arcnet.c,v 1.20 2005/04/06 21:32:38 mcr Exp $ (LBL)";
	#endif

	#ifdef HAVE_CONFIG_H
	#include "config.h"
	#endif

	#include <tcpdump-stdinc.h>

	#include <stdio.h>
	#include <pcap.h>

	#include "interface.h"
	#include "arcnet.h"

	static int arcnet_encap_print(u_char arctype, const u_char *p,
	u_int length, u_int caplen);

	struct tok arctypemap[] = {
	{ ARCTYPE_IP_OLD, "oldip" },
	{ ARCTYPE_ARP_OLD, "oldarp" },
	{ ARCTYPE_IP, "ip" },
	{ ARCTYPE_ARP, "arp" },
	{ ARCTYPE_REVARP, "rarp" },
	{ ARCTYPE_ATALK, "atalk" },
	{ ARCTYPE_BANIAN, "banyan" },
	{ ARCTYPE_IPX, "ipx" },
	{ ARCTYPE_INET6, "ipv6" },
	{ ARCTYPE_DIAGNOSE, "diag" },
	{ 0, 0 }
	};

	static inline void
	arcnet_print(const u_char *bp, u_int length, int phds, int flag, u_int seqid)
	{
	const struct arc_header *ap;
	const char *arctypename;


	ap = (const struct arc_header *)bp;


	if (qflag) {
	(void)printf("%02x %02x %d: ",
	ap->arc_shost,
	ap->arc_dhost,
	length);
	return;
	}

	arctypename = tok2str(arctypemap, "%02x", ap->arc_type);

	if (!phds) {
	(void)printf("%02x %02x %s %d: ",
	ap->arc_shost, ap->arc_dhost, arctypename,
	length);
	return;
	}

	if (flag == 0) {
	(void)printf("%02x %02x %s seqid %04x %d: ",
	ap->arc_shost, ap->arc_dhost, arctypename, seqid,
	length);
	return;
	}

	if (flag & 1)
	(void)printf("%02x %02x %s seqid %04x "
	"(first of %d fragments) %d: ",
	ap->arc_shost, ap->arc_dhost, arctypename, seqid,
	(flag + 3) / 2, length);
	else
	(void)printf("%02x %02x %s seqid %04x "
	"(fragment %d) %d: ",
	ap->arc_shost, ap->arc_dhost, arctypename, seqid,
	flag/2 + 1, length);
	}

	/*
	* This is the top level routine of the printer. 'p' points
	* to the ARCNET header of the packet, 'h->ts' is the timestamp,
	* 'h->len' is the length of the packet off the wire, and 'h->caplen'
	* is the number of bytes actually captured.
	*/
	u_int
	arcnet_if_print(const struct pcap_pkthdr h, const u_char p)
	{
	u_int caplen = h->caplen;
	u_int length = h->len;
	const struct arc_header *ap;

	int phds, flag = 0, archdrlen = 0;
	u_int seqid = 0;
	u_char arc_type;

	if (caplen < ARC_HDRLEN) {
	printf("[\|arcnet]");
	return (caplen);
	}

	ap = (const struct arc_header *)p;
	arc_type = ap->arc_type;

	switch (arc_type) {
	default:
	phds = 1;
	break;
	case ARCTYPE_IP_OLD:
	case ARCTYPE_ARP_OLD:
	case ARCTYPE_DIAGNOSE:
	phds = 0;
	archdrlen = ARC_HDRLEN;
	break;
	}

	if (phds) {
	if (caplen < ARC_HDRNEWLEN) {
	arcnet_print(p, length, 0, 0, 0);
	printf("[\|phds]");
	return (caplen);
	}

	if (ap->arc_flag == 0xff) {
	if (caplen < ARC_HDRNEWLEN_EXC) {
	arcnet_print(p, length, 0, 0, 0);
	printf("[\|phds extended]");
	return (caplen);
	}
	flag = ap->arc_flag2;
	seqid = ntohs(ap->arc_seqid2);
	archdrlen = ARC_HDRNEWLEN_EXC;
	} else {
	flag = ap->arc_flag;
	seqid = ntohs(ap->arc_seqid);
	archdrlen = ARC_HDRNEWLEN;
	}
	}


	if (eflag)
	arcnet_print(p, length, phds, flag, seqid);

	/*
	* Go past the ARCNET header.
	*/
	length -= archdrlen;
	caplen -= archdrlen;
	p += archdrlen;

	if (phds && flag && (flag & 1) == 0) {
	/*
	* This is a middle fragment.
	*/
	return (archdrlen);
	}

	if (!arcnet_encap_print(arc_type, p, length, caplen))
	default_print(p, caplen);

	return (archdrlen);
	}

	/*
	* This is the top level routine of the printer. 'p' points
	* to the ARCNET header of the packet, 'h->ts' is the timestamp,
	* 'h->len' is the length of the packet off the wire, and 'h->caplen'
	* is the number of bytes actually captured. It is quite similar
	* to the non-Linux style printer except that Linux doesn't ever
	* supply packets that look like exception frames, it always supplies
	* reassembled packets rather than raw frames, and headers have an
	* extra "offset" field between the src/dest and packet type.
	*/
	u_int
	arcnet_linux_if_print(const struct pcap_pkthdr h, const u_char p)
	{
	u_int caplen = h->caplen;
	u_int length = h->len;
	const struct arc_linux_header *ap;

	int archdrlen = 0;
	u_char arc_type;

	if (caplen < ARC_LINUX_HDRLEN) {
	printf("[\|arcnet]");
	return (caplen);
	}

	ap = (const struct arc_linux_header *)p;
	arc_type = ap->arc_type;

	switch (arc_type) {
	default:
	archdrlen = ARC_LINUX_HDRNEWLEN;
	if (caplen < ARC_LINUX_HDRNEWLEN) {
	printf("[\|arcnet]");
	return (caplen);
	}
	break;
	case ARCTYPE_IP_OLD:
	case ARCTYPE_ARP_OLD:
	case ARCTYPE_DIAGNOSE:
	archdrlen = ARC_LINUX_HDRLEN;
	break;
	}

	if (eflag)
	arcnet_print(p, length, 0, 0, 0);

	/*
	* Go past the ARCNET header.
	*/
	length -= archdrlen;
	caplen -= archdrlen;
	p += archdrlen;

	if (!arcnet_encap_print(arc_type, p, length, caplen))
	default_print(p, caplen);

	return (archdrlen);
	}

	/*
	* Prints the packet encapsulated in an ARCnet data field,
	* given the ARCnet system code.
	*
	* Returns non-zero if it can do so, zero if the system code is unknown.
	*/


	static int
	arcnet_encap_print(u_char arctype, const u_char *p,
	u_int length, u_int caplen)
	{
	switch (arctype) {

	case ARCTYPE_IP_OLD:
	case ARCTYPE_IP:
	ip_print(gndo, p, length);
	return (1);

	#ifdef INET6
	case ARCTYPE_INET6:
	ip6_print(p, length);
	return (1);
	#endif /INET6/

	case ARCTYPE_ARP_OLD:
	case ARCTYPE_ARP:
	case ARCTYPE_REVARP:
	arp_print(gndo, p, length, caplen);
	return (1);

	case ARCTYPE_ATALK: /* XXX was this ever used? */
	if (vflag)
	fputs("et1 ", stdout);
	atalk_print(p, length);
	return (1);

	case ARCTYPE_IPX:
	ipx_print(p, length);
	return (1);

	default:
	return (0);
	}
	}

	/*
	* Local Variables:
	* c-style: bsd
	* End:
	*/