2009-04-27 09:28:28 +00:00
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/* pcap-common.h
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2018-01-09 00:38:10 +00:00
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* Declarations for code common to pcap and pcapng file formats
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2009-04-27 09:28:28 +00:00
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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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2018-01-09 00:38:10 +00:00
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* File format support for pcapng file format
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2009-04-27 09:28:28 +00:00
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* Copyright (c) 2007 by Ulf Lamping <ulf.lamping@web.de>
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*
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2018-02-07 11:26:45 +00:00
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* SPDX-License-Identifier: GPL-2.0-or-later
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2009-04-27 09:28:28 +00:00
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*/
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2011-06-04 21:20:57 +00:00
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#ifndef __W_PCAP_COMMON_H__
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#define __W_PCAP_COMMON_H__
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#include <glib.h>
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2016-04-03 06:31:37 +00:00
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#include "wtap.h"
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2013-02-28 19:35:59 +00:00
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#include "ws_symbol_export.h"
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2011-06-04 21:20:57 +00:00
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Allow bigger snapshot lengths for D-Bus captures.
Use WTAP_MAX_PACKET_SIZE_STANDARD, set to 256KB, for everything except
for D-Bus captures. Use WTAP_MAX_PACKET_SIZE_DBUS, set to 128MB, for
them, because that's the largest possible D-Bus message size. See
https://bugs.freedesktop.org/show_bug.cgi?id=100220
for an example of the problems caused by limiting the snapshot length to
256KB for D-Bus.
Have a snapshot length of 0 in a capture_file structure mean "there is
no snapshot length for the file"; we don't need the has_snap field in
that case, a value of 0 mean "no, we don't have a snapshot length".
In dumpcap, start out with a pipe buffer size of 2KB, and grow it as
necessary. When checking for a too-big packet from a pipe, check
against the appropriate maximum - 128MB for DLT_DBUS, 256KB for
everything else.
Change-Id: Ib2ce7a0cf37b971fbc0318024fd011e18add8b20
Reviewed-on: https://code.wireshark.org/review/21952
Petri-Dish: Guy Harris <guy@alum.mit.edu>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Guy Harris <guy@alum.mit.edu>
2017-06-05 01:58:40 +00:00
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extern guint wtap_max_snaplen_for_encap(int wtap_encap);
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2021-02-23 09:18:31 +00:00
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extern int pcap_process_pseudo_header(FILE_T fh, gboolean is_nokia,
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int wtap_encap, guint packet_size, wtap_rec *rec,
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int *err, gchar **err_info);
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2009-04-27 19:39:06 +00:00
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2021-02-23 09:18:31 +00:00
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extern void pcap_read_post_process(gboolean is_nokia, int wtap_encap,
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2018-02-09 00:19:12 +00:00
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wtap_rec *rec, guint8 *pd, gboolean bytes_swapped, int fcs_len);
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2010-04-21 20:51:22 +00:00
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2009-04-27 19:39:06 +00:00
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extern int pcap_get_phdr_size(int encap,
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const union wtap_pseudo_header *pseudo_header);
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2014-05-09 05:18:49 +00:00
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extern gboolean pcap_write_phdr(wtap_dumper *wdh, int wtap_encap,
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2009-04-27 19:39:06 +00:00
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const union wtap_pseudo_header *pseudo_header, int *err);
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2011-06-04 21:20:57 +00:00
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#endif
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