epan/dissectors/packet-pcapng_block.c

   1 /* packet-pcapng.c
   2  * Dissector to handle pcapng file-type-specific blocks.
   3  *
   4  * Wireshark - Network traffic analyzer
   5  * By Gerald Combs <gerald@wireshark.org>
   6  * Copyright 1998 Gerald Combs
   7  *
   8  * SPDX-License-Identifier: GPL-2.0-or-later
   9  */
  10
  11 #include "config.h"
  12
  13 #include <epan/packet.h>
  14
  15 #include <wiretap/wtap.h>
  16
  17 void proto_register_pcapng_block(void);
  18 void proto_reg_handoff_pcapng_block(void);
  19
  20 static dissector_handle_t pcapng_block_handle;
  21
  22 static int proto_pcapng_block;
  23
  24 static dissector_table_t pcapng_block_type_dissector_table;
  25
  26 static int
  27 dissect_pcapng_block(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
  28 {
  29         /*
  30          * Call the dissector for the block type of this block, if there
  31          * is one.
  32          */
  33         if (!dissector_try_uint(pcapng_block_type_dissector_table,
  34             pinfo->rec->rec_header.ft_specific_header.record_type, tvb, pinfo, tree)) {
  35                 /*
  36                  * There isn't one; just do a minimal display.
  37                  */
  38                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "PCAPNG");
  39                 col_add_fstr(pinfo->cinfo, COL_INFO, "Pcapng block, type %u",
  40                     pinfo->rec->rec_header.ft_specific_header.record_type);
  41
  42                 proto_tree_add_item(tree, proto_pcapng_block, tvb, 0, -1, ENC_NA);
  43         }
  44         return tvb_captured_length(tvb);
  45 }
  46
  47 void proto_register_pcapng_block(void)
  48 {
  49         proto_pcapng_block = proto_register_protocol("Pcapng block", "PCAPNG", "pcapng");
  50         pcapng_block_type_dissector_table = register_dissector_table("pcapng.block_type",
  51             "pcapng block type", proto_pcapng_block, FT_UINT32, BASE_DEC);
  52
  53         pcapng_block_handle = register_dissector("pcapng", dissect_pcapng_block,
  54             proto_pcapng_block);
  55 }
  56
  57 void
  58 proto_reg_handoff_pcapng_block(void)
  59 {
  60         dissector_add_uint("wtap_fts_rec", wtap_pcapng_file_type_subtype(),
  61             pcapng_block_handle);
  62 }
  63
  64 /*
  65  * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
  66  *
  67  * Local variables:
  68  * c-basic-offset: 8
  69  * tab-width: 8
  70  * indent-tabs-mode: t
  71  * End:
  72  *
  73  * vi: set shiftwidth=8 tabstop=8 noexpandtab:
  74  * :indentSize=8:tabSize=8:noTabs=false:
  75  */