forked from osmocom/wireshark
1f5f63f8ef
Separate the stuff that any record could have from the stuff that only particular record types have; put the latter into a union, and put all that into a wtap_rec structure. Add some record-type checks as necessary. Change-Id: Id6b3486858f826fce4b096c59231f463e44bfaa2 Reviewed-on: https://code.wireshark.org/review/25696 Reviewed-by: Guy Harris <guy@alum.mit.edu>
78 lines
2.7 KiB
C
78 lines
2.7 KiB
C
/* pcap_module.h
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*
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* Wiretap Library
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* Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef __PCAP_MODULE_H__
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#define __PCAP_MODULE_H__
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/*
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* These are the officially registered block types, from the pcapng
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* specification.
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*
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* XXX - Dear Sysdig People: please add your blocks to the spec!
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*/
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#define BLOCK_TYPE_SHB 0x0A0D0D0A /* Section Header Block */
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#define BLOCK_TYPE_IDB 0x00000001 /* Interface Description Block */
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#define BLOCK_TYPE_PB 0x00000002 /* Packet Block (obsolete) */
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#define BLOCK_TYPE_SPB 0x00000003 /* Simple Packet Block */
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#define BLOCK_TYPE_NRB 0x00000004 /* Name Resolution Block */
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#define BLOCK_TYPE_ISB 0x00000005 /* Interface Statistics Block */
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#define BLOCK_TYPE_EPB 0x00000006 /* Enhanced Packet Block */
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#define BLOCK_TYPE_IRIG_TS 0x00000007 /* IRIG Timestamp Block */
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#define BLOCK_TYPE_ARINC_429 0x00000008 /* ARINC 429 in AFDX Encapsulation Information Block */
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#define BLOCK_TYPE_SYSDIG_EVENT 0x00000204 /* Sysdig Event Block */
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#define BLOCK_TYPE_SYSDIG_EVF 0x00000208 /* Sysdig Event Block with flags */
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/* TODO: the following are not yet well defined in the draft spec,
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* and do not yet have block type values assigned to them:
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* Compression Block
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* Encryption Block
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* Fixed Length Block
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* Directory Block
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* Traffic Statistics and Monitoring Blocks
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* Event/Security Block
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*/
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/* Block data to be passed between functions during reading */
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typedef struct wtapng_block_s {
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guint32 type; /* block_type as defined by pcapng */
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gboolean internal; /* TRUE if this block type shouldn't be returned from pcapng_read() */
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wtap_block_t block;
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wtap_rec *rec;
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Buffer *frame_buffer;
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} wtapng_block_t;
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/*
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* Reader and writer routines for pcapng block types.
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*/
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typedef gboolean (*block_reader)(FILE_T, guint32, gboolean, wtapng_block_t *,
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int *, gchar **);
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typedef gboolean (*block_writer)(wtap_dumper *, const wtap_rec *,
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const guint8 *, int *);
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/*
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* Register a handler for a pcapng block type.
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*/
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WS_DLL_PUBLIC
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void register_pcapng_block_type_handler(guint block_type, block_reader read,
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block_writer write);
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/*
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* Handler routine for pcapng option type.
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*/
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typedef gboolean (*option_handler_fn)(gboolean, guint, guint8 *, int *, gchar **);
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/*
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* Register a handler for a pcapng option code for a particular block
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* type.
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*/
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WS_DLL_PUBLIC
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void register_pcapng_option_handler(guint block_type, guint option_code,
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option_handler_fn hfunc);
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#endif /* __PCAP_MODULE_H__ */
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