/*
* Copyright (c) 2007
*
[email protected] 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 Paolo Abeni.''
* The name of author may not 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.
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: print-bt.c,v 1.8 2024/09/02 16:15:30 christos Exp $");
#endif
/* \summary: Bluetooth printer */
#include <config.h>
#include "netdissect-stdinc.h"
#define ND_LONGJMP_FROM_TCHECK
#include "netdissect.h"
#include "extract.h"
#ifdef DLT_BLUETOOTH_HCI_H4_WITH_PHDR
/*
* Header prepended by libpcap to each bluetooth h4 frame;
* the direction field is in network byte order.
*/
typedef struct _bluetooth_h4_header {
nd_uint32_t direction; /* if first bit is set direction is incoming */
} bluetooth_h4_header;
#define BT_HDRLEN sizeof(bluetooth_h4_header)
/*
* This is the top level routine of the printer. 'p' points
* to the bluetooth 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.
*/
void
bt_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
{
u_int length = h->len;
u_int caplen = h->caplen;
const bluetooth_h4_header *hdr = (const bluetooth_h4_header *)p;
ndo->ndo_protocol = "bluetooth";
nd_print_protocol(ndo);
ND_TCHECK_LEN(p, BT_HDRLEN);
ndo->ndo_ll_hdr_len += BT_HDRLEN;
caplen -= BT_HDRLEN;
length -= BT_HDRLEN;
p += BT_HDRLEN;
if (ndo->ndo_eflag)
ND_PRINT(", hci length %u, direction %s", length,
(GET_BE_U_4(hdr->direction)&0x1) ? "in" : "out");
if (!ndo->ndo_suppress_default_print)
ND_DEFAULTPRINT(p, caplen);
}
#endif
