epan/dissectors/packet-tpkt.h

   1 /* packet-tpkt.h
   2  *
   3  * Routines for TPKT dissection
   4  *
   5  * Copyright 2000, Philips Electronics N.V.
   6  * Andreas Sikkema <andreas.sikkema@philips.com>
   7  *
   8  * Wireshark - Network traffic analyzer
   9  * By Gerald Combs <gerald@wireshark.org>
  10  * Copyright 1998 Gerald Combs
  11  *
  12  * SPDX-License-Identifier: GPL-2.0-or-later
  13  */
  14
  15 #include "ws_symbol_export.h"
  16
  17 /*
  18  * Check whether this could be a TPKT-encapsulated PDU.
  19  * Returns -1 if it's not, and the PDU length from the TPKT header
  20  * if it is.
  21  *
  22  * "min_len" is the minimum length of the PDU; the length field in the
  23  * TPKT header must be at least "4+min_len" in order for this to be a
  24  * valid TPKT PDU for the protocol in question.
  25  */
  26 WS_DLL_PUBLIC int is_tpkt(tvbuff_t *tvb, int min_len);
  27
  28 /*
  29  * Dissect TPKT-encapsulated data in a TCP stream.
  30  */
  31 WS_DLL_PUBLIC void dissect_tpkt_encap(tvbuff_t *tvb, packet_info *pinfo,
  32     proto_tree *tree, bool desegment,
  33     dissector_handle_t subdissector_handle);
  34
  35 /*
  36  * Check whether this could be a ASCII TPKT-encapsulated PDU.
  37  * Returns -1 if it's not, and the PDU length from the TPKT header
  38  * if it is.
  39  *
  40  * "min_len" is the minimum length of the PDU; the length field in the
  41  * TPKT header must be at least "8+min_len" in order for this to be a
  42  * valid TPKT PDU for the protocol in question.
  43  */
  44 extern uint16_t is_asciitpkt(tvbuff_t *tvb);
  45
  46 /*
  47  * Dissect ASCII TPKT-encapsulated data in a TCP stream.
  48  */
  49 extern void dissect_asciitpkt(tvbuff_t *tvb, packet_info *pinfo,
  50     proto_tree *tree, dissector_handle_t subdissector_handle);