forked from osmocom/wireshark
d0865fd619
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>
48 lines
1.7 KiB
C
48 lines
1.7 KiB
C
/* pcap-common.h
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* Declarations for code common to libpcap and pcap-NG file formats
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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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* File format support for pcap-ng file format
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* Copyright (c) 2007 by Ulf Lamping <ulf.lamping@web.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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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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#include "wtap.h"
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#include "ws_symbol_export.h"
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extern guint wtap_max_snaplen_for_encap(int wtap_encap);
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extern int pcap_process_pseudo_header(FILE_T fh, int file_type, int wtap_encap,
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guint packet_size, gboolean check_packet_size,
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struct wtap_pkthdr *phdr, int *err, gchar **err_info);
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extern void pcap_read_post_process(int file_type, int wtap_encap,
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struct wtap_pkthdr *phdr, guint8 *pd, gboolean bytes_swapped, int fcs_len);
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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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extern gboolean pcap_write_phdr(wtap_dumper *wdh, int wtap_encap,
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const union wtap_pseudo_header *pseudo_header, int *err);
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#endif
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