The Tcpdump Group git mirrors - tcpdump/blob - print-bt.c

   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 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include <tcpdump-stdinc.h>
  25
  26 #include "interface.h"
  27 #include "extract.h"
  28
  29 #if defined(DLT_BLUETOOTH_HCI_H4_WITH_PHDR) && defined(HAVE_PCAP_BLUETOOTH_H)
  30 #include <pcap/bluetooth.h>
  31
  32 #define BT_HDRLEN sizeof(pcap_bluetooth_h4_header)
  33 /*
  34  * This is the top level routine of the printer.  'p' points
  35  * to the bluetooth header of the packet, 'h->ts' is the timestamp,
  36  * 'h->len' is the length of the packet off the wire, and 'h->caplen'
  37  * is the number of bytes actually captured.
  38  */
  39 u_int
  40 bt_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
  41 {
  42         u_int length = h->len;
  43         u_int caplen = h->caplen;
  44         const pcap_bluetooth_h4_header* hdr = (const pcap_bluetooth_h4_header*)p;
  45
  46         if (caplen < BT_HDRLEN) {
  47                 ND_PRINT((ndo, "[|bt]"));
  48                 return (BT_HDRLEN);
  49         }
  50         caplen -= BT_HDRLEN;
  51         length -= BT_HDRLEN;
  52         p += BT_HDRLEN;
  53         if (ndo->ndo_eflag)
  54                 ND_PRINT((ndo, "hci length %d, direction %s, ", length, (EXTRACT_32BITS(&hdr->direction)&0x1)?"in":"out"));
  55
  56         if (!ndo->ndo_suppress_default_print)
  57                 ND_DEFAULTPRINT(p, caplen);
  58
  59         return (BT_HDRLEN);
  60 }
  61 #endif
  62
  63
  64 /*
  65  * Local Variables:
  66  * c-style: whitesmith
  67  * c-basic-offset: 8
  68  * End:
  69  */