tcpdump  4.99.1
About: tcpdump is a tool for network monitoring and data acquisition.
  Fossies Dox: tcpdump-4.99.1.tar.gz  ("unofficial" and yet experimental doxygen-generated source code documentation)  

print-ap1394.c
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1 /*
2  * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000
3  * The Regents of the University of California. All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that: (1) source code distributions
7  * retain the above copyright notice and this paragraph in its entirety, (2)
8  * distributions including binary code include the above copyright notice and
9  * this paragraph in its entirety in the documentation or other materials
10  * provided with the distribution, and (3) all advertising materials mentioning
11  * features or use of this software display the following acknowledgement:
12  * ``This product includes software developed by the University of California,
13  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14  * the University nor the names of its contributors may be used to endorse
15  * or promote products derived from this software without specific prior
16  * written permission.
17  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20  */
21 
22 /* \summary: Apple IP-over-IEEE 1394 printer */
23 
24 #ifdef HAVE_CONFIG_H
25 #include <config.h>
26 #endif
27 
28 #include "netdissect-stdinc.h"
29 
30 #define ND_LONGJMP_FROM_TCHECK
31 #include "netdissect.h"
32 #include "extract.h"
33 #include "addrtoname.h"
34 #include "ethertype.h"
35 
36 /*
37  * Structure of a header for Apple's IP-over-IEEE 1384 BPF header.
38  */
39 #define FIREWIRE_EUI64_LEN 8
44 };
45 
46 /*
47  * Length of that header; note that some compilers may pad
48  * "struct firewire_header" to a multiple of 4 bytes, for example, so
49  * "sizeof (struct firewire_header)" may not give the right answer.
50  */
51 #define FIREWIRE_HDRLEN 18
52 
53 static const char *
54 fwaddr_string(netdissect_options *ndo, const u_char *addr)
55 {
57 }
58 
59 static void
60 ap1394_hdr_print(netdissect_options *ndo, const u_char *bp, u_int length)
61 {
62  const struct firewire_header *fp;
63  uint16_t firewire_type;
64 
65  fp = (const struct firewire_header *)bp;
66 
67  ND_PRINT("%s > %s",
68  fwaddr_string(ndo, fp->firewire_shost),
69  fwaddr_string(ndo, fp->firewire_dhost));
70 
72  if (!ndo->ndo_qflag) {
73  ND_PRINT(", ethertype %s (0x%04x)",
76  } else {
77  ND_PRINT(", %s", tok2str(ethertype_values,"Unknown Ethertype (0x%04x)", firewire_type));
78  }
79 
80  ND_PRINT(", length %u: ", length);
81 }
82 
83 /*
84  * This is the top level routine of the printer. 'p' points
85  * to the ether header of the packet, 'h->ts' is the timestamp,
86  * 'h->len' is the length of the packet off the wire, and 'h->caplen'
87  * is the number of bytes actually captured.
88  */
89 void
90 ap1394_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
91 {
92  u_int length = h->len;
93  u_int caplen = h->caplen;
94  const struct firewire_header *fp;
95  u_short ether_type;
96  struct lladdr_info src, dst;
97 
98  ndo->ndo_protocol = "ap1394";
101 
102  if (ndo->ndo_eflag)
103  ap1394_hdr_print(ndo, p, length);
104 
105  length -= FIREWIRE_HDRLEN;
106  caplen -= FIREWIRE_HDRLEN;
107  fp = (const struct firewire_header *)p;
108  p += FIREWIRE_HDRLEN;
109 
110  ether_type = GET_BE_U_2(fp->firewire_type);
111  src.addr = fp->firewire_shost;
113  dst.addr = fp->firewire_dhost;
115  if (ethertype_print(ndo, ether_type, p, length, caplen, &src, &dst) == 0) {
116  /* ether_type not known, print raw packet */
117  if (!ndo->ndo_eflag)
118  ap1394_hdr_print(ndo, (const u_char *)fp, length + FIREWIRE_HDRLEN);
119 
120  if (!ndo->ndo_suppress_default_print)
121  ND_DEFAULTPRINT(p, caplen);
122  }
123 }
@ LINKADDR_IEEE1394
Definition: addrtoname.h:37
#define GET_LINKADDR_STRING(p, type, len)
Definition: addrtoname.h:116
const struct tok ethertype_values[]
Definition: print-ether.c:52
#define GET_BE_U_2(p)
Definition: extract.h:875
unsigned char nd_uint16_t[2]
Definition: netdissect.h:47
#define ND_TCHECK_LEN(p, l)
Definition: netdissect.h:368
const char * tok2str(const struct tok *, const char *, u_int)
Definition: util-print.c:485
int ethertype_print(netdissect_options *, u_short, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *)
Definition: print-ether.c:522
#define ND_DEFAULTPRINT(ap, length)
Definition: netdissect.h:386
unsigned char nd_byte
Definition: netdissect.h:108
#define ND_PRINT(...)
Definition: netdissect.h:385
static const char * fwaddr_string(netdissect_options *ndo, const u_char *addr)
Definition: print-ap1394.c:54
static void ap1394_hdr_print(netdissect_options *ndo, const u_char *bp, u_int length)
Definition: print-ap1394.c:60
#define FIREWIRE_HDRLEN
Definition: print-ap1394.c:51
#define FIREWIRE_EUI64_LEN
Definition: print-ap1394.c:39
void ap1394_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
Definition: print-ap1394.c:90
nd_byte firewire_shost[8]
Definition: print-ap1394.c:42
nd_byte firewire_dhost[8]
Definition: print-ap1394.c:41
nd_uint16_t firewire_type
Definition: print-ap1394.c:43
const u_char * addr
Definition: netdissect.h:545
const char *(* addr_string)(netdissect_options *, const u_char *)
Definition: netdissect.h:544
int ndo_suppress_default_print
Definition: netdissect.h:222
const char * ndo_protocol
Definition: netdissect.h:218