epan/dissectors/file-pcapng.h

   1 /* file-pcapng.h
   2  *
   3  * Wireshark - Network traffic analyzer
   4  * By Gerald Combs <gerald@wireshark.org>
   5  * Copyright 1998 Gerald Combs
   6  *
   7  * SPDX-License-Identifier: GPL-2.0-or-later
   8  */
   9
  10
  11 #ifndef __FILE_PCAPNG_H__
  12 #define __FILE_PCAPNG_H__
  13
  14 /*
  15  * Structure to pass to block data dissectors.
  16  */
  17 typedef struct {
  18     proto_item *block_item;
  19     proto_tree *block_tree;
  20     struct info *info;
  21 } block_data_arg;
  22
  23
  24 /* Callback for local block data dissection */
  25 typedef void (local_block_dissect_t)(proto_tree *tree, packet_info *pinfo, tvbuff_t *tvb, block_data_arg *argp);
  26
  27 /* Callback for local block option dissection function */
  28 typedef void (local_block_option_dissect_t)(proto_tree *option_tree, proto_item *option_item,
  29                                             packet_info *pinfo, tvbuff_t *tvb, int offset,
  30                                             int unknown_option_hf,
  31                                             uint32_t option_code, uint32_t option_length,
  32                                             unsigned encoding);
  33
  34 typedef struct {
  35     const char* name;
  36     local_block_dissect_t *dissector;
  37     int option_root_hf;
  38     const value_string *option_vals;
  39     local_block_option_dissect_t *option_dissector;
  40 } local_block_callback_info_t;
  41
  42 /* Routine for a local block dissector to register with main pcapng dissector.
  43  * For an in-tree example, please see file-pcapng-darwin.c */
  44 void register_pcapng_local_block_dissector(uint32_t block_number, local_block_callback_info_t *info);
  45
  46
  47 /* Can be called by local block type dissectors block dissector callback */
  48 int dissect_options(proto_tree *tree, packet_info *pinfo,
  49         uint32_t block_type, tvbuff_t *tvb, int offset, unsigned encoding,
  50         void *user_data);
  51
  52
  53
  54 /* Used by custom dissector */
  55
  56 /* File info */
  57 struct info {
  58     uint32_t       block_number;
  59     uint32_t       section_number;
  60     uint32_t       interface_number;
  61     uint32_t       darwin_process_event_number;
  62     uint32_t       frame_number;
  63     unsigned       encoding;
  64     wmem_array_t  *interfaces;
  65     wmem_array_t  *darwin_process_events;
  66 };
  67
  68 struct interface_description {
  69     uint32_t link_type;
  70     uint32_t snap_len;
  71     uint64_t timestamp_resolution;
  72     uint64_t timestamp_offset;
  73 };
  74
  75 struct darwin_process_event_description {
  76     uint32_t process_id;
  77 };
  78
  79 /* Dissect one PCAPNG Block */
  80 extern int dissect_block(proto_tree *tree, packet_info *pinfo, tvbuff_t *tvb, struct info *info);
  81
  82 #endif