xref: /minix3/external/bsd/tcpdump/dist/print-ap1394.c (revision b636d99d91c3d54204248f643c14627405d4afd1)
1*b636d99dSDavid van Moolenbroek /*
2*b636d99dSDavid van Moolenbroek  * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000
3*b636d99dSDavid van Moolenbroek  *	The Regents of the University of California.  All rights reserved.
4*b636d99dSDavid van Moolenbroek  *
5*b636d99dSDavid van Moolenbroek  * Redistribution and use in source and binary forms, with or without
6*b636d99dSDavid van Moolenbroek  * modification, are permitted provided that: (1) source code distributions
7*b636d99dSDavid van Moolenbroek  * retain the above copyright notice and this paragraph in its entirety, (2)
8*b636d99dSDavid van Moolenbroek  * distributions including binary code include the above copyright notice and
9*b636d99dSDavid van Moolenbroek  * this paragraph in its entirety in the documentation or other materials
10*b636d99dSDavid van Moolenbroek  * provided with the distribution, and (3) all advertising materials mentioning
11*b636d99dSDavid van Moolenbroek  * features or use of this software display the following acknowledgement:
12*b636d99dSDavid van Moolenbroek  * ``This product includes software developed by the University of California,
13*b636d99dSDavid van Moolenbroek  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14*b636d99dSDavid van Moolenbroek  * the University nor the names of its contributors may be used to endorse
15*b636d99dSDavid van Moolenbroek  * or promote products derived from this software without specific prior
16*b636d99dSDavid van Moolenbroek  * written permission.
17*b636d99dSDavid van Moolenbroek  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18*b636d99dSDavid van Moolenbroek  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19*b636d99dSDavid van Moolenbroek  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20*b636d99dSDavid van Moolenbroek  */
21*b636d99dSDavid van Moolenbroek #include <sys/cdefs.h>
22*b636d99dSDavid van Moolenbroek #ifndef lint
23*b636d99dSDavid van Moolenbroek __RCSID("$NetBSD: print-ap1394.c,v 1.4 2014/11/20 03:05:03 christos Exp $");
24*b636d99dSDavid van Moolenbroek #endif
25*b636d99dSDavid van Moolenbroek 
26*b636d99dSDavid van Moolenbroek #define NETDISSECT_REWORKED
27*b636d99dSDavid van Moolenbroek #ifdef HAVE_CONFIG_H
28*b636d99dSDavid van Moolenbroek #include "config.h"
29*b636d99dSDavid van Moolenbroek #endif
30*b636d99dSDavid van Moolenbroek 
31*b636d99dSDavid van Moolenbroek #include <tcpdump-stdinc.h>
32*b636d99dSDavid van Moolenbroek 
33*b636d99dSDavid van Moolenbroek #include "interface.h"
34*b636d99dSDavid van Moolenbroek #include "extract.h"
35*b636d99dSDavid van Moolenbroek #include "addrtoname.h"
36*b636d99dSDavid van Moolenbroek #include "ethertype.h"
37*b636d99dSDavid van Moolenbroek 
38*b636d99dSDavid van Moolenbroek /*
39*b636d99dSDavid van Moolenbroek  * Structure of a header for Apple's IP-over-IEEE 1384 BPF header.
40*b636d99dSDavid van Moolenbroek  */
41*b636d99dSDavid van Moolenbroek #define FIREWIRE_EUI64_LEN	8
42*b636d99dSDavid van Moolenbroek struct firewire_header {
43*b636d99dSDavid van Moolenbroek 	u_char  firewire_dhost[FIREWIRE_EUI64_LEN];
44*b636d99dSDavid van Moolenbroek 	u_char  firewire_shost[FIREWIRE_EUI64_LEN];
45*b636d99dSDavid van Moolenbroek 	u_short firewire_type;
46*b636d99dSDavid van Moolenbroek };
47*b636d99dSDavid van Moolenbroek 
48*b636d99dSDavid van Moolenbroek /*
49*b636d99dSDavid van Moolenbroek  * Length of that header; note that some compilers may pad
50*b636d99dSDavid van Moolenbroek  * "struct firewire_header" to a multiple of 4 bytes, for example, so
51*b636d99dSDavid van Moolenbroek  * "sizeof (struct firewire_header)" may not give the right answer.
52*b636d99dSDavid van Moolenbroek  */
53*b636d99dSDavid van Moolenbroek #define FIREWIRE_HDRLEN		18
54*b636d99dSDavid van Moolenbroek 
55*b636d99dSDavid van Moolenbroek static inline void
ap1394_hdr_print(netdissect_options * ndo,register const u_char * bp,u_int length)56*b636d99dSDavid van Moolenbroek ap1394_hdr_print(netdissect_options *ndo, register const u_char *bp, u_int length)
57*b636d99dSDavid van Moolenbroek {
58*b636d99dSDavid van Moolenbroek 	register const struct firewire_header *fp;
59*b636d99dSDavid van Moolenbroek 	uint16_t firewire_type;
60*b636d99dSDavid van Moolenbroek 
61*b636d99dSDavid van Moolenbroek 	fp = (const struct firewire_header *)bp;
62*b636d99dSDavid van Moolenbroek 
63*b636d99dSDavid van Moolenbroek 	ND_PRINT((ndo, "%s > %s",
64*b636d99dSDavid van Moolenbroek 		     linkaddr_string(ndo, fp->firewire_dhost, LINKADDR_IEEE1394, FIREWIRE_EUI64_LEN),
65*b636d99dSDavid van Moolenbroek 		     linkaddr_string(ndo, fp->firewire_shost, LINKADDR_IEEE1394, FIREWIRE_EUI64_LEN)));
66*b636d99dSDavid van Moolenbroek 
67*b636d99dSDavid van Moolenbroek 	firewire_type = EXTRACT_16BITS(&fp->firewire_type);
68*b636d99dSDavid van Moolenbroek 	if (!ndo->ndo_qflag) {
69*b636d99dSDavid van Moolenbroek 		ND_PRINT((ndo, ", ethertype %s (0x%04x)",
70*b636d99dSDavid van Moolenbroek 			       tok2str(ethertype_values,"Unknown", firewire_type),
71*b636d99dSDavid van Moolenbroek                                firewire_type));
72*b636d99dSDavid van Moolenbroek         } else {
73*b636d99dSDavid van Moolenbroek                 ND_PRINT((ndo, ", %s", tok2str(ethertype_values,"Unknown Ethertype (0x%04x)", firewire_type)));
74*b636d99dSDavid van Moolenbroek         }
75*b636d99dSDavid van Moolenbroek 
76*b636d99dSDavid van Moolenbroek 	ND_PRINT((ndo, ", length %u: ", length));
77*b636d99dSDavid van Moolenbroek }
78*b636d99dSDavid van Moolenbroek 
79*b636d99dSDavid van Moolenbroek /*
80*b636d99dSDavid van Moolenbroek  * This is the top level routine of the printer.  'p' points
81*b636d99dSDavid van Moolenbroek  * to the ether header of the packet, 'h->ts' is the timestamp,
82*b636d99dSDavid van Moolenbroek  * 'h->len' is the length of the packet off the wire, and 'h->caplen'
83*b636d99dSDavid van Moolenbroek  * is the number of bytes actually captured.
84*b636d99dSDavid van Moolenbroek  */
85*b636d99dSDavid van Moolenbroek u_int
ap1394_if_print(netdissect_options * ndo,const struct pcap_pkthdr * h,const u_char * p)86*b636d99dSDavid van Moolenbroek ap1394_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
87*b636d99dSDavid van Moolenbroek {
88*b636d99dSDavid van Moolenbroek 	u_int length = h->len;
89*b636d99dSDavid van Moolenbroek 	u_int caplen = h->caplen;
90*b636d99dSDavid van Moolenbroek 	struct firewire_header *fp;
91*b636d99dSDavid van Moolenbroek 	u_short ether_type;
92*b636d99dSDavid van Moolenbroek 
93*b636d99dSDavid van Moolenbroek 	if (caplen < FIREWIRE_HDRLEN) {
94*b636d99dSDavid van Moolenbroek 		ND_PRINT((ndo, "[|ap1394]"));
95*b636d99dSDavid van Moolenbroek 		return FIREWIRE_HDRLEN;
96*b636d99dSDavid van Moolenbroek 	}
97*b636d99dSDavid van Moolenbroek 
98*b636d99dSDavid van Moolenbroek 	if (ndo->ndo_eflag)
99*b636d99dSDavid van Moolenbroek 		ap1394_hdr_print(ndo, p, length);
100*b636d99dSDavid van Moolenbroek 
101*b636d99dSDavid van Moolenbroek 	length -= FIREWIRE_HDRLEN;
102*b636d99dSDavid van Moolenbroek 	caplen -= FIREWIRE_HDRLEN;
103*b636d99dSDavid van Moolenbroek 	fp = (struct firewire_header *)p;
104*b636d99dSDavid van Moolenbroek 	p += FIREWIRE_HDRLEN;
105*b636d99dSDavid van Moolenbroek 
106*b636d99dSDavid van Moolenbroek 	ether_type = EXTRACT_16BITS(&fp->firewire_type);
107*b636d99dSDavid van Moolenbroek 	if (ethertype_print(ndo, ether_type, p, length, caplen) == 0) {
108*b636d99dSDavid van Moolenbroek 		/* ether_type not known, print raw packet */
109*b636d99dSDavid van Moolenbroek 		if (!ndo->ndo_eflag)
110*b636d99dSDavid van Moolenbroek 			ap1394_hdr_print(ndo, (u_char *)fp, length + FIREWIRE_HDRLEN);
111*b636d99dSDavid van Moolenbroek 
112*b636d99dSDavid van Moolenbroek 		if (!ndo->ndo_suppress_default_print)
113*b636d99dSDavid van Moolenbroek 			ND_DEFAULTPRINT(p, caplen);
114*b636d99dSDavid van Moolenbroek 	}
115*b636d99dSDavid van Moolenbroek 
116*b636d99dSDavid van Moolenbroek 	return FIREWIRE_HDRLEN;
117*b636d99dSDavid van Moolenbroek }
118