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

   1 /*
   2  * Copyright (c) 2013 The TCPDUMP project
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that: (1) source code
   6  * distributions retain the above copyright notice and this paragraph
   7  * in its entirety, and (2) distributions including binary code include
   8  * the above copyright notice and this paragraph in its entirety in
   9  * the documentation or other materials provided with the distribution.
  10  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
  11  * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
  12  * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  13  * FOR A PARTICULAR PURPOSE.
  14  *
  15  * Original code by Ola Martin Lykkja (ola.lykkja@q-free.com)
  16  */
  17
  18 /* \summary: Communication access for land mobiles (CALM) printer */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "netdissect-stdinc.h"
  25
  26 #include "netdissect.h"
  27 #include "extract.h"
  28 #include "addrtoname.h"
  29
  30 /*
  31    ISO 29281:2009
  32    Intelligent Transport Systems . Communications access for land mobiles (CALM)
  33    CALM non-IP networking
  34 */
  35
  36 /*
  37  * This is the top level routine of the printer.  'bp' points
  38  * to the calm header of the packet.
  39  */
  40 void
  41 calm_fast_print(netdissect_options *ndo, const u_char *bp, u_int length, const struct lladdr_info *src)
  42 {
  43         u_int srcNwref;
  44         u_int dstNwref;
  45
  46         ND_TCHECK_2(bp);
  47         if (length < 2)
  48                 goto trunc;
  49         srcNwref = EXTRACT_U_1(bp);
  50         dstNwref = EXTRACT_U_1(bp + 1);
  51         length -= 2;
  52         bp += 2;
  53
  54         ND_PRINT("CALM FAST");
  55         if (src != NULL)
  56                 ND_PRINT(" src:%s", (src->addr_string)(ndo, src->addr));
  57         ND_PRINT("; ");
  58         ND_PRINT("SrcNwref:%u; ", srcNwref);
  59         ND_PRINT("DstNwref:%u; ", dstNwref);
  60
  61         if (ndo->ndo_vflag)
  62                 ND_DEFAULTPRINT(bp, length);
  63         return;
  64
  65 trunc:
  66         ND_PRINT("[|calm fast]");
  67         return;
  68 }
  69
  70
  71 /*
  72  * Local Variables:
  73  * c-style: whitesmith
  74  * c-basic-offset: 8
  75  * End:
  76  */