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https://github.com/the-tcpdump-group/tcpdump.git
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e8b5237589
Use the EXTRACT_ macros to extract multi-byte integral values from packets, rather than just dereferencing pointers into the packet; there is no guarantee that the packet data will be aligned on the right boundary, and there is no guarantee that, if they're not, a direct access will work correctly.
80 lines
2.3 KiB
C
80 lines
2.3 KiB
C
/*
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* Copyright (c) 2007
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* paolo.abeni@email.it All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by Paolo Abeni.''
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* The name of author may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifndef lint
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static const char rcsid[] _U_ =
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"@(#) $Header: /tcpdump/master/tcpdump/print-bt.c,v 1.2 2008-09-25 21:45:50 guy Exp $";
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#endif
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <tcpdump-stdinc.h>
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#include <pcap.h>
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#include <stdio.h>
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#include <string.h>
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#include "interface.h"
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#include "extract.h"
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#include "addrtoname.h"
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#if defined(DLT_BLUETOOTH_HCI_H4_WITH_PHDR) && defined(HAVE_PCAP_BLUETOOTH_H)
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#include <pcap/bluetooth.h>
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#define BT_HDRLEN sizeof(pcap_bluetooth_h4_header)
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/*
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* This is the top level routine of the printer. 'p' points
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* to the bluetooth header of the packet, 'h->ts' is the timestamp,
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* 'h->len' is the length of the packet off the wire, and 'h->caplen'
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* is the number of bytes actually captured.
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*/
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u_int
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bt_if_print(const struct pcap_pkthdr *h, const u_char *p)
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{
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u_int length = h->len;
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u_int caplen = h->caplen;
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const pcap_bluetooth_h4_header* hdr = (const pcap_bluetooth_h4_header*)p;
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if (caplen < BT_HDRLEN) {
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printf("[|bt]");
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return (BT_HDRLEN);
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}
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caplen -= BT_HDRLEN;
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length -= BT_HDRLEN;
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p += BT_HDRLEN;
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if (eflag)
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(void)printf("hci length %d, direction %s, ", length, (EXTRACT_32BITS(&hdr->direction)&0x1)?"in":"out");
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if (!suppress_default_print)
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default_print(p, caplen);
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return (BT_HDRLEN);
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}
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#endif
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/*
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* Local Variables:
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* c-style: whitesmith
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* c-basic-offset: 8
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* End:
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*/
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