xref: /minix/external/bsd/tcpdump/dist/print-bt.c (revision bb9622b5)
1 /*
2  * Copyright (c) 2007
3  *	paolo.abeni@email.it  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 Paolo Abeni.''
13  * The name of author may not be used to endorse or promote products derived
14  * from this software without specific prior written permission.
15  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
16  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
17  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
18  */
19 
20 #include <sys/cdefs.h>
21 #ifndef lint
22 __RCSID("$NetBSD: print-bt.c,v 1.4 2014/11/20 03:05:03 christos Exp $");
23 #endif
24 
25 #define NETDISSECT_REWORKED
26 #ifdef HAVE_CONFIG_H
27 #include "config.h"
28 #endif
29 
30 #include <tcpdump-stdinc.h>
31 
32 #include "interface.h"
33 #include "extract.h"
34 
35 #if defined(DLT_BLUETOOTH_HCI_H4_WITH_PHDR) && defined(HAVE_PCAP_BLUETOOTH_H)
36 #include <pcap/bluetooth.h>
37 
38 #define	BT_HDRLEN sizeof(pcap_bluetooth_h4_header)
39 /*
40  * This is the top level routine of the printer.  'p' points
41  * to the bluetooth header of the packet, 'h->ts' is the timestamp,
42  * 'h->len' is the length of the packet off the wire, and 'h->caplen'
43  * is the number of bytes actually captured.
44  */
45 u_int
46 bt_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
47 {
48 	u_int length = h->len;
49 	u_int caplen = h->caplen;
50 	const pcap_bluetooth_h4_header* hdr = (const pcap_bluetooth_h4_header*)p;
51 
52 	if (caplen < BT_HDRLEN) {
53 		ND_PRINT((ndo, "[|bt]"));
54 		return (BT_HDRLEN);
55 	}
56 	caplen -= BT_HDRLEN;
57 	length -= BT_HDRLEN;
58 	p += BT_HDRLEN;
59 	if (ndo->ndo_eflag)
60 		ND_PRINT((ndo, "hci length %d, direction %s, ", length, (EXTRACT_32BITS(&hdr->direction)&0x1)?"in":"out"));
61 
62 	if (!ndo->ndo_suppress_default_print)
63 		ND_DEFAULTPRINT(p, caplen);
64 
65 	return (BT_HDRLEN);
66 }
67 #endif
68 
69 
70 /*
71  * Local Variables:
72  * c-style: whitesmith
73  * c-basic-offset: 8
74  * End:
75  */
76