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 /* \summary: Bluetooth printer */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include "netdissect-stdinc.h"
  27
  28 #include "netdissect.h"
  29 #include "extract.h"
  30
  31 static const char tstr[] = " [|bt]";
  32
  33 #if defined(DLT_BLUETOOTH_HCI_H4_WITH_PHDR) && defined(HAVE_PCAP_BLUETOOTH_H)
  34 #include <pcap/bluetooth.h>
  35
  36 #define BT_HDRLEN sizeof(pcap_bluetooth_h4_header)
  37 /*
  38  * This is the top level routine of the printer.  'p' points
  39  * to the bluetooth header of the packet, 'h->ts' is the timestamp,
  40  * 'h->len' is the length of the packet off the wire, and 'h->caplen'
  41  * is the number of bytes actually captured.
  42  */
  43 u_int
  44 bt_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
  45 {
  46         u_int length = h->len;
  47         u_int caplen = h->caplen;
  48         const pcap_bluetooth_h4_header* hdr = (const pcap_bluetooth_h4_header*)p;
  49
  50         ndo->ndo_protocol = "bt_if";
  51         if (caplen < BT_HDRLEN || length < BT_HDRLEN)
  52                 goto trunc;
  53         caplen -= BT_HDRLEN;
  54         length -= BT_HDRLEN;
  55         p += BT_HDRLEN;
  56         ND_TCHECK_4(&hdr->direction);
  57         if (ndo->ndo_eflag)
  58                 ND_PRINT("hci length %u, direction %s, ", length,
  59                          (EXTRACT_BE_U_4(&hdr->direction)&0x1) ? "in" : "out");
  60
  61         if (!ndo->ndo_suppress_default_print)
  62                 ND_DEFAULTPRINT(p, caplen);
  63
  64 trunc:
  65         ND_PRINT("%s", tstr);
  66         return (BT_HDRLEN);
  67 }
  68 #endif
  69
  70
  71 /*
  72  * Local Variables:
  73  * c-style: whitesmith
  74  * c-basic-offset: 8
  75  * End:
  76  */