forked from osmocom/wireshark
![Guy Harris](/assets/img/avatar_default.png)
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>
925 lines
34 KiB
C
925 lines
34 KiB
C
/* lanalyzer.c
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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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* 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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#include "config.h"
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#include <stdlib.h>
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#include <errno.h>
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#include "wtap-int.h"
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#include "file_wrappers.h"
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#include "lanalyzer.h"
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#include "pcapng.h"
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/* The LANalyzer format is documented (at least in part) in Novell document
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TID022037, which can be found at, among other places:
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http://www.windowsecurity.com/whitepapers/Description_of_the_LANalysers_output_file.html
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*/
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/* Record header format */
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typedef struct {
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guint8 record_type[2];
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guint8 record_length[2];
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} LA_RecordHeader;
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#define LA_RecordHeaderSize 4
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/* Record type codes: */
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#define RT_HeaderRegular 0x1001
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#define RT_HeaderCyclic 0x1007
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#define RT_RxChannelName 0x1006
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#define RT_TxChannelName 0x100b
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#define RT_FilterName 0x1032
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#define RT_RxTemplateName 0x1035
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#define RT_TxTemplateName 0x1036
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#define RT_DisplayOptions 0x100a
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#define RT_Summary 0x1002
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#define RT_SubfileSummary 0x1003
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#define RT_CyclicInformation 0x1009
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#define RT_Index 0x1004
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#define RT_PacketData 0x1005
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#define LA_ProFileLimit (1024 * 1024 * 32)
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typedef guint8 Eadr[6];
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typedef guint16 TimeStamp[3]; /* 0.5 microseconds since start of trace */
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/*
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* These records have only 2-byte alignment for 4-byte quantities,
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* so the structures aren't necessarily valid; they're kept as comments
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* for reference purposes.
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*/
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/*
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* typedef struct {
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* guint8 day;
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* guint8 mon;
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* gint16 year;
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* } Date;
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*/
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/*
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* typedef struct {
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* guint8 second;
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* guint8 minute;
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* guint8 hour;
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* guint8 day;
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* gint16 reserved;
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* } Time;
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*/
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/*
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* RT_Summary:
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*
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* typedef struct {
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* Date datcre;
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* Date datclo;
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* Time timeopn;
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* Time timeclo;
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* Eadr statadr;
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* gint16 mxseqno;
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* gint16 slcoff;
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* gint16 mxslc;
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* gint32 totpktt;
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* gint32 statrg;
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* gint32 stptrg;
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* gint32 mxpkta[36];
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* gint16 board_type;
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* gint16 board_version;
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* gint8 reserved[18];
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* } Summary;
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*/
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#define SummarySize (18+22+(4*36)+6+6+6+4+4)
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/*
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* typedef struct {
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* gint16 rid;
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* gint16 rlen;
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* Summary s;
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* } LA_SummaryRecord;
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*/
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#define LA_SummaryRecordSize (SummarySize + 4)
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/* LANalyzer board types (which indicate the type of network on which
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the capture was done). */
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#define BOARD_325 226 /* LANalyzer 325 (Ethernet) */
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#define BOARD_325TR 227 /* LANalyzer 325TR (Token-ring) */
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/*
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* typedef struct {
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* gint16 rid;
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* gint16 rlen;
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* gint16 seqno;
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* gint32 totpktf;
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* } LA_SubfileSummaryRecord;
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*/
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#define LA_SubfileSummaryRecordSize 10
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#define LA_IndexSize 500
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/*
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* typedef struct {
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* gint16 rid;
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* gint16 rlen;
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* gint16 idxsp; = LA_IndexSize
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* gint16 idxct;
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* gint8 idxgranu;
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* gint8 idxvd;
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* gint32 trcidx[LA_IndexSize + 2]; +2 undocumented but used by La 2.2
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* } LA_IndexRecord;
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*/
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#define LA_IndexRecordSize (10 + 4 * (LA_IndexSize + 2))
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/*
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* typedef struct {
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* guint16 rx_channels;
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* guint16 rx_errors;
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* gint16 rx_frm_len;
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* gint16 rx_frm_sln;
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* TimeStamp rx_time;
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* guint32 pktno;
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* gint16 prvlen;
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* gint16 offset;
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* gint16 tx_errs;
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* gint16 rx_filters;
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* gint8 unused[2];
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* gint16 hwcolls;
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* gint16 hwcollschans;
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* Packetdata ....;
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* } LA_PacketRecord;
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*/
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#define LA_PacketRecordSize 32
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typedef struct {
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gboolean init;
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nstime_t start;
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guint32 pkts;
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int encap;
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int lastlen;
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} LA_TmpInfo;
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static const guint8 LA_HeaderRegularFake[] = {
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0x01,0x10,0x4c,0x00,0x01,0x05,0x54,0x72,0x61,0x63,0x65,0x20,0x44,0x69,0x73,0x70,
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0x6c,0x61,0x79,0x20,0x54,0x72,0x61,0x63,0x65,0x20,0x46,0x69,0x6c,0x65,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
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};
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static const guint8 LA_RxChannelNameFake[] = {
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0x06,0x10,0x80,0x00,0x43,0x68,0x61,0x6e ,0x6e,0x65,0x6c,0x31,0x00,0x43,0x68,0x61,
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0x6e,0x6e,0x65,0x6c,0x32,0x00,0x43,0x68 ,0x61,0x6e,0x6e,0x65,0x6c,0x33,0x00,0x43,
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0x68,0x61,0x6e,0x6e,0x65,0x6c,0x34,0x00 ,0x43,0x68,0x61,0x6e,0x6e,0x65,0x6c,0x35,
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0x00,0x43,0x68,0x61,0x6e,0x6e,0x65,0x6c ,0x36,0x00,0x43,0x68,0x61,0x6e,0x6e,0x65,
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0x6c,0x37,0x00,0x43,0x68,0x61,0x6e,0x6e ,0x65,0x6c,0x38,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00
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};
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static const guint8 LA_TxChannelNameFake[] = {
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0x0b,0x10,0x36,0x00 ,0x54,0x72,0x61,0x6e,0x73,0x31,0x00,0x00,
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0x00,0x54,0x72,0x61,0x6e,0x73,0x32,0x00 ,0x00,0x00,0x54,0x72,0x61,0x6e,0x73,0x33,
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0x00,0x00,0x00,0x54,0x72,0x61,0x6e,0x73 ,0x34,0x00,0x00,0x00,0x54,0x72,0x61,0x6e,
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0x73,0x35,0x00,0x00,0x00,0x54,0x72,0x61 ,0x6e,0x73,0x36,0x00,0x00,0x00
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};
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static const guint8 LA_RxTemplateNameFake[] = {
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0x35,0x10,
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0x90,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00
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};
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static const guint8 LA_TxTemplateNameFake[] = {
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0x36,0x10,0x36,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00
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};
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static const guint8 LA_DisplayOptionsFake[] = {
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0x0a,0x10,0x0a,0x01,
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0x00,0x00,0x01,0x00,0x01,0x02,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00
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};
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static const guint8 LA_CyclicInformationFake[] = {
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0x09,0x10,0x1a,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
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};
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static const guint8 z64[64] = {
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
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};
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typedef struct {
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time_t start;
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} lanalyzer_t;
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static gboolean lanalyzer_read(wtap *wth, int *err, gchar **err_info,
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gint64 *data_offset);
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static gboolean lanalyzer_seek_read(wtap *wth, gint64 seek_off,
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struct wtap_pkthdr *phdr, Buffer *buf, int *err, gchar **err_info);
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static gboolean lanalyzer_dump_finish(wtap_dumper *wdh, int *err);
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wtap_open_return_val lanalyzer_open(wtap *wth, int *err, gchar **err_info)
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{
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LA_RecordHeader rec_header;
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char header_fixed[2];
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char *comment;
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char summary[210];
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guint16 board_type, mxslc;
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guint16 record_type, record_length;
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guint8 cr_day, cr_month;
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guint16 cr_year;
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struct tm tm;
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lanalyzer_t *lanalyzer;
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if (!wtap_read_bytes(wth->fh, &rec_header, LA_RecordHeaderSize,
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err, err_info)) {
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if (*err != WTAP_ERR_SHORT_READ)
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return WTAP_OPEN_ERROR;
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return WTAP_OPEN_NOT_MINE;
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}
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record_type = pletoh16(rec_header.record_type);
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record_length = pletoh16(rec_header.record_length); /* make sure to do this for while() loop */
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if (record_type != RT_HeaderRegular && record_type != RT_HeaderCyclic) {
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return WTAP_OPEN_NOT_MINE;
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}
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/* Read the major and minor version numbers */
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if (record_length < 2) {
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/*
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* Not enough room for the major and minor version numbers.
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* Just treat that as a "not a LANalyzer file" indication.
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*/
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return WTAP_OPEN_NOT_MINE;
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}
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if (!wtap_read_bytes(wth->fh, &header_fixed, sizeof header_fixed,
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err, err_info)) {
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if (*err != WTAP_ERR_SHORT_READ)
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return WTAP_OPEN_ERROR;
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return WTAP_OPEN_NOT_MINE;
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}
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record_length -= sizeof header_fixed;
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if (record_length != 0) {
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/* Read the rest of the record as a comment. */
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comment = (char *)g_malloc(record_length + 1);
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if (!wtap_read_bytes(wth->fh, comment, record_length,
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err, err_info)) {
|
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if (*err != WTAP_ERR_SHORT_READ) {
|
|
g_free(comment);
|
|
return WTAP_OPEN_ERROR;
|
|
}
|
|
g_free(comment);
|
|
return WTAP_OPEN_NOT_MINE;
|
|
}
|
|
wtap_block_add_string_option(g_array_index(wth->shb_hdrs, wtap_block_t, 0), OPT_COMMENT, comment, record_length);
|
|
g_free(comment);
|
|
}
|
|
|
|
/* If we made it this far, then the file is a LANAlyzer file.
|
|
* Let's get some info from it. Note that we get wth->snapshot_length
|
|
* from a record later in the file. */
|
|
wth->file_type_subtype = WTAP_FILE_TYPE_SUBTYPE_LANALYZER;
|
|
lanalyzer = (lanalyzer_t *)g_malloc(sizeof(lanalyzer_t));
|
|
wth->priv = (void *)lanalyzer;
|
|
wth->subtype_read = lanalyzer_read;
|
|
wth->subtype_seek_read = lanalyzer_seek_read;
|
|
wth->snapshot_length = 0;
|
|
wth->file_tsprec = WTAP_TSPREC_NSEC;
|
|
|
|
/* Read records until we find the start of packets */
|
|
while (1) {
|
|
if (!wtap_read_bytes_or_eof(wth->fh, &rec_header,
|
|
LA_RecordHeaderSize, err, err_info)) {
|
|
if (*err == 0) {
|
|
/*
|
|
* End of file and no packets;
|
|
* accept this file.
|
|
*/
|
|
return WTAP_OPEN_MINE;
|
|
}
|
|
return WTAP_OPEN_ERROR;
|
|
}
|
|
|
|
record_type = pletoh16(rec_header.record_type);
|
|
record_length = pletoh16(rec_header.record_length);
|
|
|
|
/*g_message("Record 0x%04X Length %d", record_type, record_length);*/
|
|
switch (record_type) {
|
|
/* Trace Summary Record */
|
|
case RT_Summary:
|
|
if (!wtap_read_bytes(wth->fh, summary,
|
|
sizeof summary, err, err_info))
|
|
return WTAP_OPEN_ERROR;
|
|
|
|
/* Assume that the date of the creation of the trace file
|
|
* is the same date of the trace. Lanalyzer doesn't
|
|
* store the creation date/time of the trace, but only of
|
|
* the file. Unless you traced at 11:55 PM and saved at 00:05
|
|
* AM, the assumption that trace.date == file.date is true.
|
|
*/
|
|
cr_day = summary[0];
|
|
cr_month = summary[1];
|
|
cr_year = pletoh16(&summary[2]);
|
|
/*g_message("Day %d Month %d Year %d (%04X)", cr_day, cr_month,
|
|
cr_year, cr_year);*/
|
|
|
|
/* Get capture start time. I learned how to do
|
|
* this from Guy's code in ngsniffer.c
|
|
*/
|
|
tm.tm_year = cr_year - 1900;
|
|
tm.tm_mon = cr_month - 1;
|
|
tm.tm_mday = cr_day;
|
|
tm.tm_hour = 0;
|
|
tm.tm_min = 0;
|
|
tm.tm_sec = 0;
|
|
tm.tm_isdst = -1;
|
|
lanalyzer->start = mktime(&tm);
|
|
/*g_message("Day %d Month %d Year %d", tm.tm_mday,
|
|
tm.tm_mon, tm.tm_year);*/
|
|
mxslc = pletoh16(&summary[30]);
|
|
wth->snapshot_length = mxslc;
|
|
|
|
board_type = pletoh16(&summary[188]);
|
|
switch (board_type) {
|
|
case BOARD_325:
|
|
wth->file_encap = WTAP_ENCAP_ETHERNET;
|
|
break;
|
|
case BOARD_325TR:
|
|
wth->file_encap = WTAP_ENCAP_TOKEN_RING;
|
|
break;
|
|
default:
|
|
*err = WTAP_ERR_UNSUPPORTED;
|
|
*err_info = g_strdup_printf("lanalyzer: board type %u unknown",
|
|
board_type);
|
|
return WTAP_OPEN_ERROR;
|
|
}
|
|
break;
|
|
|
|
/* Trace Packet Data Record */
|
|
case RT_PacketData:
|
|
/* Go back header number of bytes so that lanalyzer_read
|
|
* can read this header */
|
|
if (file_seek(wth->fh, -LA_RecordHeaderSize, SEEK_CUR, err) == -1) {
|
|
return WTAP_OPEN_ERROR;
|
|
}
|
|
return WTAP_OPEN_MINE;
|
|
|
|
default:
|
|
/* Unknown record type - skip it */
|
|
if (!wtap_read_bytes(wth->fh, NULL, record_length, err, err_info)) {
|
|
return WTAP_OPEN_ERROR;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
#define DESCRIPTOR_LEN 32
|
|
|
|
static gboolean lanalyzer_read_trace_record(wtap *wth, FILE_T fh,
|
|
struct wtap_pkthdr *phdr, Buffer *buf, int *err, gchar **err_info)
|
|
{
|
|
char LE_record_type[2];
|
|
char LE_record_length[2];
|
|
guint16 record_type, record_length;
|
|
int record_data_size;
|
|
int packet_size;
|
|
gchar descriptor[DESCRIPTOR_LEN];
|
|
lanalyzer_t *lanalyzer;
|
|
guint16 time_low, time_med, time_high, true_size;
|
|
guint64 t;
|
|
time_t tsecs;
|
|
|
|
/* read the record type and length. */
|
|
if (!wtap_read_bytes_or_eof(fh, LE_record_type, 2, err, err_info))
|
|
return FALSE;
|
|
if (!wtap_read_bytes(fh, LE_record_length, 2, err, err_info))
|
|
return FALSE;
|
|
|
|
record_type = pletoh16(LE_record_type);
|
|
record_length = pletoh16(LE_record_length);
|
|
|
|
/* Only Trace Packet Data Records should occur now that we're in
|
|
* the middle of reading packets. If any other record type exists
|
|
* after a Trace Packet Data Record, mark it as an error. */
|
|
if (record_type != RT_PacketData) {
|
|
*err = WTAP_ERR_BAD_FILE;
|
|
*err_info = g_strdup_printf("lanalyzer: record type %u seen after trace summary record",
|
|
record_type);
|
|
return FALSE;
|
|
}
|
|
|
|
if (record_length < DESCRIPTOR_LEN) {
|
|
/*
|
|
* Uh-oh, the record isn't big enough to even have a
|
|
* descriptor.
|
|
*/
|
|
*err = WTAP_ERR_BAD_FILE;
|
|
*err_info = g_strdup_printf("lanalyzer: file has a %u-byte record, too small to have even a packet descriptor",
|
|
record_length);
|
|
return FALSE;
|
|
}
|
|
record_data_size = record_length - DESCRIPTOR_LEN;
|
|
|
|
/* Read the descriptor data */
|
|
if (!wtap_read_bytes(fh, descriptor, DESCRIPTOR_LEN, err, err_info))
|
|
return FALSE;
|
|
|
|
true_size = pletoh16(&descriptor[4]);
|
|
packet_size = pletoh16(&descriptor[6]);
|
|
/*
|
|
* The maximum value of packet_size is 65535, which is less than
|
|
* WTAP_MAX_PACKET_SIZE_STANDARD will ever be, so we don't need to check
|
|
* it.
|
|
*/
|
|
|
|
/*
|
|
* OK, is the frame data size greater than than what's left of the
|
|
* record?
|
|
*/
|
|
if (packet_size > record_data_size) {
|
|
/*
|
|
* Yes - treat this as an error.
|
|
*/
|
|
*err = WTAP_ERR_BAD_FILE;
|
|
*err_info = g_strdup("lanalyzer: Record length is less than packet size");
|
|
return FALSE;
|
|
}
|
|
|
|
phdr->rec_type = REC_TYPE_PACKET;
|
|
phdr->presence_flags = WTAP_HAS_TS|WTAP_HAS_CAP_LEN;
|
|
|
|
time_low = pletoh16(&descriptor[8]);
|
|
time_med = pletoh16(&descriptor[10]);
|
|
time_high = pletoh16(&descriptor[12]);
|
|
t = (((guint64)time_low) << 0) + (((guint64)time_med) << 16) +
|
|
(((guint64)time_high) << 32);
|
|
tsecs = (time_t) (t/2000000);
|
|
lanalyzer = (lanalyzer_t *)wth->priv;
|
|
phdr->ts.secs = tsecs + lanalyzer->start;
|
|
phdr->ts.nsecs = ((guint32) (t - tsecs*2000000)) * 500;
|
|
|
|
if (true_size - 4 >= packet_size) {
|
|
/*
|
|
* It appears that the "true size" includes the FCS;
|
|
* make it reflect the non-FCS size (the "packet size"
|
|
* appears never to include the FCS, even if no slicing
|
|
* is done).
|
|
*/
|
|
true_size -= 4;
|
|
}
|
|
phdr->len = true_size;
|
|
phdr->caplen = packet_size;
|
|
|
|
switch (wth->file_encap) {
|
|
|
|
case WTAP_ENCAP_ETHERNET:
|
|
/* We assume there's no FCS in this frame. */
|
|
phdr->pseudo_header.eth.fcs_len = 0;
|
|
break;
|
|
}
|
|
|
|
/* Read the packet data */
|
|
return wtap_read_packet_bytes(fh, buf, packet_size, err, err_info);
|
|
}
|
|
|
|
/* Read the next packet */
|
|
static gboolean lanalyzer_read(wtap *wth, int *err, gchar **err_info,
|
|
gint64 *data_offset)
|
|
{
|
|
*data_offset = file_tell(wth->fh);
|
|
|
|
/* Read the record */
|
|
return lanalyzer_read_trace_record(wth, wth->fh, &wth->phdr,
|
|
wth->frame_buffer, err, err_info);
|
|
}
|
|
|
|
static gboolean lanalyzer_seek_read(wtap *wth, gint64 seek_off,
|
|
struct wtap_pkthdr *phdr, Buffer *buf, int *err, gchar **err_info)
|
|
{
|
|
if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
|
|
return FALSE;
|
|
|
|
/* Read the record */
|
|
if (!lanalyzer_read_trace_record(wth, wth->random_fh, phdr, buf,
|
|
err, err_info)) {
|
|
if (*err == 0)
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/*---------------------------------------------------
|
|
* Returns TRUE on success, FALSE on error
|
|
* Write "cnt" bytes of zero with error control
|
|
*---------------------------------------------------*/
|
|
static gboolean s0write(wtap_dumper *wdh, size_t cnt, int *err)
|
|
{
|
|
size_t snack;
|
|
|
|
while (cnt) {
|
|
snack = cnt > 64 ? 64 : cnt;
|
|
|
|
if (!wtap_dump_file_write(wdh, z64, snack, err))
|
|
return FALSE;
|
|
cnt -= snack;
|
|
}
|
|
return TRUE; /* ok */
|
|
}
|
|
|
|
/*---------------------------------------------------
|
|
* Returns TRUE on success, FALSE on error
|
|
* Write an 8-bit value
|
|
*---------------------------------------------------*/
|
|
static gboolean s8write(wtap_dumper *wdh, const guint8 s8, int *err)
|
|
{
|
|
return wtap_dump_file_write(wdh, &s8, 1, err);
|
|
}
|
|
/*---------------------------------------------------
|
|
* Returns TRUE on success, FALSE on error
|
|
* Write a 16-bit value as little-endian
|
|
*---------------------------------------------------*/
|
|
static gboolean s16write(wtap_dumper *wdh, const guint16 s16, int *err)
|
|
{
|
|
guint16 s16_le = GUINT16_TO_LE(s16);
|
|
return wtap_dump_file_write(wdh, &s16_le, 2, err);
|
|
}
|
|
/*---------------------------------------------------
|
|
* Returns TRUE on success, FALSE on error
|
|
* Write a 32-bit value as little-endian
|
|
*---------------------------------------------------*/
|
|
static gboolean s32write(wtap_dumper *wdh, const guint32 s32, int *err)
|
|
{
|
|
guint32 s32_le = GUINT32_TO_LE(s32);
|
|
return wtap_dump_file_write(wdh, &s32_le, 4, err);
|
|
}
|
|
/*---------------------------------------------------
|
|
* Returns TRUE on success, FALSE on error
|
|
* Write a 48-bit value as little-endian
|
|
*---------------------------------------------------*/
|
|
static gboolean s48write(wtap_dumper *wdh, const guint64 s48, int *err)
|
|
{
|
|
#ifdef WORDS_BIGENDIAN
|
|
guint16 s48_upper_le = GUINT16_SWAP_LE_BE((guint16) (s48 >> 32));
|
|
guint32 s48_lower_le = GUINT32_SWAP_LE_BE((guint32) (s48 & 0xFFFFFFFF));
|
|
#else
|
|
guint16 s48_upper_le = (guint16) (s48 >> 32);
|
|
guint32 s48_lower_le = (guint32) (s48 & 0xFFFFFFFF);
|
|
#endif
|
|
return wtap_dump_file_write(wdh, &s48_lower_le, 4, err) &&
|
|
wtap_dump_file_write(wdh, &s48_upper_le, 2, err);
|
|
}
|
|
/*---------------------------------------------------
|
|
* Write a record for a packet to a dump file.
|
|
* Returns TRUE on success, FALSE on failure.
|
|
*---------------------------------------------------*/
|
|
static gboolean lanalyzer_dump(wtap_dumper *wdh,
|
|
const struct wtap_pkthdr *phdr,
|
|
const guint8 *pd, int *err, gchar **err_info _U_)
|
|
{
|
|
guint64 x;
|
|
int len;
|
|
|
|
LA_TmpInfo *itmp = (LA_TmpInfo*)(wdh->priv);
|
|
nstime_t td;
|
|
int thisSize = phdr->caplen + LA_PacketRecordSize + LA_RecordHeaderSize;
|
|
|
|
/* We can only write packet records. */
|
|
if (phdr->rec_type != REC_TYPE_PACKET) {
|
|
*err = WTAP_ERR_UNWRITABLE_REC_TYPE;
|
|
return FALSE;
|
|
}
|
|
|
|
if (wdh->bytes_dumped + thisSize > LA_ProFileLimit) {
|
|
/* printf(" LA_ProFileLimit reached\n"); */
|
|
*err = EFBIG;
|
|
return FALSE; /* and don't forget the header */
|
|
}
|
|
|
|
len = phdr->caplen + (phdr->caplen ? LA_PacketRecordSize : 0);
|
|
|
|
/* len goes into a 16-bit field, so there's a hard limit of 65535. */
|
|
if (len > 65535) {
|
|
*err = WTAP_ERR_PACKET_TOO_LARGE;
|
|
return FALSE;
|
|
}
|
|
|
|
if (!s16write(wdh, 0x1005, err))
|
|
return FALSE;
|
|
if (!s16write(wdh, (guint16)len, err))
|
|
return FALSE;
|
|
|
|
if (!itmp->init) {
|
|
/* collect some information for the
|
|
* finally written header
|
|
*/
|
|
itmp->start = phdr->ts;
|
|
itmp->pkts = 0;
|
|
itmp->init = TRUE;
|
|
itmp->encap = wdh->encap;
|
|
itmp->lastlen = 0;
|
|
}
|
|
|
|
if (!s16write(wdh, 0x0001, err)) /* pr.rx_channels */
|
|
return FALSE;
|
|
if (!s16write(wdh, 0x0008, err)) /* pr.rx_errors */
|
|
return FALSE;
|
|
if (!s16write(wdh, (guint16) (phdr->len + 4), err)) /* pr.rx_frm_len */
|
|
return FALSE;
|
|
if (!s16write(wdh, (guint16) phdr->caplen, err)) /* pr.rx_frm_sln */
|
|
return FALSE;
|
|
|
|
nstime_delta(&td, &phdr->ts, &itmp->start);
|
|
|
|
/* Convert to half-microseconds, rounded up. */
|
|
x = (td.nsecs + 250) / 500; /* nanoseconds -> half-microseconds, rounded */
|
|
x += td.secs * 2000000; /* seconds -> half-microseconds */
|
|
|
|
if (!s48write(wdh, x, err)) /* pr.rx_time[i] */
|
|
return FALSE;
|
|
|
|
if (!s32write(wdh, ++itmp->pkts, err)) /* pr.pktno */
|
|
return FALSE;
|
|
if (!s16write(wdh, (guint16)itmp->lastlen, err)) /* pr.prlen */
|
|
return FALSE;
|
|
itmp->lastlen = len;
|
|
|
|
if (!s0write(wdh, 12, err))
|
|
return FALSE;
|
|
|
|
if (!wtap_dump_file_write(wdh, pd, phdr->caplen, err))
|
|
return FALSE;
|
|
|
|
wdh->bytes_dumped += thisSize;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*---------------------------------------------------
|
|
* Returns 0 if we could write the specified encapsulation type,
|
|
* an error indication otherwise.
|
|
*---------------------------------------------------*/
|
|
int lanalyzer_dump_can_write_encap(int encap)
|
|
{
|
|
/* Per-packet encapsulations aren't supported. */
|
|
if (encap == WTAP_ENCAP_PER_PACKET)
|
|
return WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED;
|
|
|
|
if ( encap != WTAP_ENCAP_ETHERNET
|
|
&& encap != WTAP_ENCAP_TOKEN_RING )
|
|
return WTAP_ERR_UNWRITABLE_ENCAP;
|
|
/*
|
|
* printf("lanalyzer_dump_can_write_encap(%d)\n",encap);
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
/*---------------------------------------------------
|
|
* Returns TRUE on success, FALSE on failure; sets "*err" to an
|
|
* error code on failure
|
|
*---------------------------------------------------*/
|
|
gboolean lanalyzer_dump_open(wtap_dumper *wdh, int *err)
|
|
{
|
|
int jump;
|
|
void *tmp;
|
|
|
|
tmp = g_malloc(sizeof(LA_TmpInfo));
|
|
if (!tmp) {
|
|
*err = errno;
|
|
return FALSE;
|
|
}
|
|
|
|
((LA_TmpInfo*)tmp)->init = FALSE;
|
|
wdh->priv = tmp;
|
|
wdh->subtype_write = lanalyzer_dump;
|
|
wdh->subtype_finish = lanalyzer_dump_finish;
|
|
|
|
/* Some of the fields in the file header aren't known yet so
|
|
just skip over it for now. It will be created after all
|
|
of the packets have been written. */
|
|
|
|
jump = sizeof (LA_HeaderRegularFake)
|
|
+ sizeof (LA_RxChannelNameFake)
|
|
+ sizeof (LA_TxChannelNameFake)
|
|
+ sizeof (LA_RxTemplateNameFake)
|
|
+ sizeof (LA_TxTemplateNameFake)
|
|
+ sizeof (LA_DisplayOptionsFake)
|
|
+ LA_SummaryRecordSize
|
|
+ LA_SubfileSummaryRecordSize
|
|
+ sizeof (LA_CyclicInformationFake)
|
|
+ LA_IndexRecordSize;
|
|
|
|
if (wtap_dump_file_seek(wdh, jump, SEEK_SET, err) == -1)
|
|
return FALSE;
|
|
|
|
wdh->bytes_dumped = jump;
|
|
return TRUE;
|
|
}
|
|
|
|
/*---------------------------------------------------
|
|
*
|
|
*---------------------------------------------------*/
|
|
static gboolean lanalyzer_dump_header(wtap_dumper *wdh, int *err)
|
|
{
|
|
LA_TmpInfo *itmp = (LA_TmpInfo*)(wdh->priv);
|
|
guint16 board_type = itmp->encap == WTAP_ENCAP_TOKEN_RING
|
|
? BOARD_325TR /* LANalyzer Board Type */
|
|
: BOARD_325; /* LANalyzer Board Type */
|
|
struct tm *fT;
|
|
|
|
fT = localtime(&itmp->start.secs);
|
|
if (fT == NULL)
|
|
return FALSE;
|
|
|
|
if (wtap_dump_file_seek(wdh, 0, SEEK_SET, err) == -1)
|
|
return FALSE;
|
|
|
|
if (!wtap_dump_file_write(wdh, &LA_HeaderRegularFake,
|
|
sizeof LA_HeaderRegularFake, err))
|
|
return FALSE;
|
|
if (!wtap_dump_file_write(wdh, &LA_RxChannelNameFake,
|
|
sizeof LA_RxChannelNameFake, err))
|
|
return FALSE;
|
|
if (!wtap_dump_file_write(wdh, &LA_TxChannelNameFake,
|
|
sizeof LA_TxChannelNameFake, err))
|
|
return FALSE;
|
|
if (!wtap_dump_file_write(wdh, &LA_RxTemplateNameFake,
|
|
sizeof LA_RxTemplateNameFake, err))
|
|
return FALSE;
|
|
if (!wtap_dump_file_write(wdh, &LA_TxTemplateNameFake,
|
|
sizeof LA_TxTemplateNameFake, err))
|
|
return FALSE;
|
|
if (!wtap_dump_file_write(wdh, &LA_DisplayOptionsFake,
|
|
sizeof LA_DisplayOptionsFake, err))
|
|
return FALSE;
|
|
/*-----------------------------------------------------------------*/
|
|
if (!s16write(wdh, RT_Summary, err)) /* rid */
|
|
return FALSE;
|
|
if (!s16write(wdh, SummarySize, err)) /* rlen */
|
|
return FALSE;
|
|
if (!s8write(wdh, (guint8) fT->tm_mday, err)) /* s.datcre.day */
|
|
return FALSE;
|
|
if (!s8write(wdh, (guint8) (fT->tm_mon+1), err)) /* s.datcre.mon */
|
|
return FALSE;
|
|
if (!s16write(wdh, (guint16) (fT->tm_year + 1900), err)) /* s.datcre.year */
|
|
return FALSE;
|
|
if (!s8write(wdh, (guint8) fT->tm_mday, err)) /* s.datclo.day */
|
|
return FALSE;
|
|
if (!s8write(wdh, (guint8) (fT->tm_mon+1), err)) /* s.datclo.mon */
|
|
return FALSE;
|
|
if (!s16write(wdh, (guint16) (fT->tm_year + 1900), err)) /* s.datclo.year */
|
|
return FALSE;
|
|
if (!s8write(wdh, (guint8) fT->tm_sec, err)) /* s.timeopn.second */
|
|
return FALSE;
|
|
if (!s8write(wdh, (guint8) fT->tm_min, err)) /* s.timeopn.minute */
|
|
return FALSE;
|
|
if (!s8write(wdh, (guint8) fT->tm_hour, err)) /* s.timeopn.hour */
|
|
return FALSE;
|
|
if (!s8write(wdh, (guint8) fT->tm_mday, err)) /* s.timeopn.mday */
|
|
return FALSE;
|
|
if (!s0write(wdh, 2, err))
|
|
return FALSE;
|
|
if (!s8write(wdh, (guint8) fT->tm_sec, err)) /* s.timeclo.second */
|
|
return FALSE;
|
|
if (!s8write(wdh, (guint8) fT->tm_min, err)) /* s.timeclo.minute */
|
|
return FALSE;
|
|
if (!s8write(wdh, (guint8) fT->tm_hour, err)) /* s.timeclo.hour */
|
|
return FALSE;
|
|
if (!s8write(wdh, (guint8) fT->tm_mday, err)) /* s.timeclo.mday */
|
|
return FALSE;
|
|
if (!s0write(wdh, 2, err))
|
|
return FALSE;
|
|
if (!s0write(wdh, 6, err)) /* EAddr == 0 */
|
|
return FALSE;
|
|
if (!s16write(wdh, 1, err)) /* s.mxseqno */
|
|
return FALSE;
|
|
if (!s16write(wdh, 0, err)) /* s.slcoffo */
|
|
return FALSE;
|
|
if (!s16write(wdh, 1514, err)) /* s.mxslc */
|
|
return FALSE;
|
|
if (!s32write(wdh, itmp->pkts, err)) /* s.totpktt */
|
|
return FALSE;
|
|
/*
|
|
* statrg == 0; ? -1
|
|
* stptrg == 0; ? -1
|
|
* s.mxpkta[0]=0
|
|
*/
|
|
if (!s0write(wdh, 12, err))
|
|
return FALSE;
|
|
if (!s32write(wdh, itmp->pkts, err)) /* sr.s.mxpkta[1] */
|
|
return FALSE;
|
|
if (!s0write(wdh, 34*4, err)) /* s.mxpkta[2-33]=0 */
|
|
return FALSE;
|
|
if (!s16write(wdh, board_type, err))
|
|
return FALSE;
|
|
if (!s0write(wdh, 20, err)) /* board_version == 0 */
|
|
return FALSE;
|
|
/*-----------------------------------------------------------------*/
|
|
if (!s16write(wdh, RT_SubfileSummary, err)) /* ssr.rid */
|
|
return FALSE;
|
|
if (!s16write(wdh, LA_SubfileSummaryRecordSize-4, err)) /* ssr.rlen */
|
|
return FALSE;
|
|
if (!s16write(wdh, 1, err)) /* ssr.seqno */
|
|
return FALSE;
|
|
if (!s32write(wdh, itmp->pkts, err)) /* ssr.totpkts */
|
|
return FALSE;
|
|
/*-----------------------------------------------------------------*/
|
|
if (!wtap_dump_file_write(wdh, &LA_CyclicInformationFake,
|
|
sizeof LA_CyclicInformationFake, err))
|
|
return FALSE;
|
|
/*-----------------------------------------------------------------*/
|
|
if (!s16write(wdh, RT_Index, err)) /* rid */
|
|
return FALSE;
|
|
if (!s16write(wdh, LA_IndexRecordSize -4, err)) /* rlen */
|
|
return FALSE;
|
|
if (!s16write(wdh, LA_IndexSize, err)) /* idxsp */
|
|
return FALSE;
|
|
if (!s0write(wdh, LA_IndexRecordSize - 6, err))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*---------------------------------------------------
|
|
* Finish writing to a dump file.
|
|
* Returns TRUE on success, FALSE on failure.
|
|
*---------------------------------------------------*/
|
|
static gboolean lanalyzer_dump_finish(wtap_dumper *wdh, int *err)
|
|
{
|
|
lanalyzer_dump_header(wdh,err);
|
|
return *err ? FALSE : TRUE;
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 6
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=6 tabstop=8 expandtab:
|
|
* :indentSize=6:tabSize=8:noTabs=true:
|
|
*/
|