forked from osmocom/wireshark
723c80ea90
- automatic adjustment depending on file format - manual adjustment through menu items save the setting in the recent file svn path=/trunk/; revision=15534
855 lines
25 KiB
C
855 lines
25 KiB
C
/* nettl.c
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*
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* $Id$
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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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* Enhancements by Mark C. Brown <mbrown@hp.com>
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* Copyright (C) 2003, 2005 Hewlett-Packard Development Company, L.P.
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include "wtap-int.h"
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#include "file_wrappers.h"
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#include "buffer.h"
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#include "nettl.h"
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/* HP nettl file header */
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/* Magic number size */
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#define MAGIC_SIZE 12
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static guchar nettl_magic_hpux9[MAGIC_SIZE] = {
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0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xD0, 0x00
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};
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static guchar nettl_magic_hpux10[MAGIC_SIZE] = {
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0x54, 0x52, 0x00, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80
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};
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#define FILE_HDR_SIZE 128
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struct nettl_file_hdr {
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guchar magic[MAGIC_SIZE];
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gchar file_name[56];
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gchar tz[20];
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gchar host_name[9];
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gchar os_vers[9];
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guchar os_v;
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guint8 xxa[8];
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gchar model[11];
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guint16 unknown; /* just padding to 128 bytes? */
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};
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/* HP nettl record header for the SX25L2 subsystem - The FCS is not included in the file. */
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struct nettlrec_sx25l2_hdr {
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guint8 xxa[8];
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guint8 from_dce;
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guint8 xxb[55];
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guint8 caplen[2];
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guint8 length[2];
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guint8 xxc[4];
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guint8 sec[4];
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guint8 usec[4];
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guint8 xxd[4];
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};
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/* HP nettl record header for the NS_LS_IP subsystem */
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/* This also works for BASE100 and GSC100BT */
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/* see /usr/include/sys/netdiag1.h for hints */
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struct nettlrec_ns_ls_ip_hdr {
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guint32 devid;
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guint8 xxa[4];
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guint32 kind;
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guint8 xxb[16];
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guint32 caplen;
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guint32 length;
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guint32 sec;
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guint32 usec;
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guint32 pid;
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guint8 xxc[10];
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guint16 uid;
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};
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/* Full record header for writing out a nettl file */
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struct nettlrec_dump_hdr {
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guint16 hdr_len;
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guint16 subsys;
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struct nettlrec_ns_ls_ip_hdr hdr;
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guint8 xxd[4];
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};
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/* header is followed by data and once again the total length (2 bytes) ! */
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/* NL_LS_DRIVER :
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The following shows what the header looks like for NS_LS_DRIVER
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The capture was taken on HPUX11 and for a 100baseT interface.
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000080 00 44 00 0b 00 00 00 02 00 00 00 00 20 00 00 00
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000090 00 00 00 00 00 00 04 06 00 00 00 00 00 00 00 00
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0000a0 00 00 00 74 00 00 00 74 3c e3 76 19 00 06 34 63
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0000b0 ff ff ff ff 00 00 00 00 00 00 00 00 ff ff ff ff
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0000c0 00 00 00 00 00 00 01 02 00 5c 00 5c ff ff ff ff
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0000d0 3c e3 76 19 00 06 34 5a 00 0b 00 14 <here starts the MAC heder>
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Each entry starts with 0x0044000b
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The values 0x005c at position 0x0000c8 and 0x0000ca matches the number of bytes in
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the packet up to the next entry, which starts with 0x00440b again. These probably
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indicate the real and captured length of the packet (order unknown)
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The values 0x00000074 at positions 0x0000a0 and 0x0000a4 seems to indicate
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the same number as positions 0x0000c8 and 0x0000ca but added with 24.
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Perhaps we have here two layers of headers.
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The first layer is fixed and consists of all the bytes from 0x000084 up to and
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including 0x0000c3 which is a generic header for all packets captured from any
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device. This header might be of fixed size 64 bytes and there might be something in
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it which indicates the type of the next header which is link type specific.
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Following this header there is another header for the 100baseT interface which
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in this case is 24 bytes long spanning positions 0x0000c4 to 0x0000db.
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When someone reports that the loading of the captures breaks, we can compare
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this header above with what he/she got to learn how to distinguish between different
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types of link specific headers.
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For now:
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The first header seems to be
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a normal nettlrec_ns_ls_ip_hdr
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The header for 100baseT seems to be
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0-3 unknown
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4-5 captured length
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6-7 actual length
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8-11 unknown
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12-15 secs
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16-19 usecs
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20-23 unknown
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*/
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struct nettlrec_ns_ls_drv_eth_hdr {
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guint8 xxa[4];
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guint8 caplen[2];
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guint8 length[2];
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guint8 xxb[4];
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guint8 sec[4];
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guint8 usec[4];
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guint8 xxc[4];
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};
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static gboolean nettl_read(wtap *wth, int *err, gchar **err_info,
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long *data_offset);
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static gboolean nettl_seek_read(wtap *wth, long seek_off,
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union wtap_pseudo_header *pseudo_header, guchar *pd,
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int length, int *err, gchar **err_info);
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static int nettl_read_rec_header(wtap *wth, FILE_T fh,
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struct wtap_pkthdr *phdr, union wtap_pseudo_header *pseudo_header,
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int *err, gchar **err_info, gboolean *fddihack);
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static gboolean nettl_read_rec_data(FILE_T fh, guchar *pd, int length,
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int *err, gboolean fddihack);
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static void nettl_close(wtap *wth);
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static gboolean nettl_dump(wtap_dumper *wdh, const struct wtap_pkthdr *phdr,
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const union wtap_pseudo_header *pseudo_header, const guchar *pd, int *err);
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int nettl_open(wtap *wth, int *err, gchar **err_info _U_)
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{
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char magic[MAGIC_SIZE], os_vers[2];
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guint16 dummy[2];
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int subsys;
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int bytes_read;
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/* Read in the string that should be at the start of a HP file */
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errno = WTAP_ERR_CANT_READ;
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bytes_read = file_read(magic, 1, MAGIC_SIZE, wth->fh);
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if (bytes_read != MAGIC_SIZE) {
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*err = file_error(wth->fh);
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if (*err != 0)
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return -1;
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return 0;
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}
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if (memcmp(magic, nettl_magic_hpux9, MAGIC_SIZE) &&
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memcmp(magic, nettl_magic_hpux10, MAGIC_SIZE)) {
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return 0;
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}
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if (file_seek(wth->fh, 0x63, SEEK_SET, err) == -1)
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return -1;
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wth->data_offset = 0x63;
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bytes_read = file_read(os_vers, 1, 2, wth->fh);
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if (bytes_read != 2) {
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*err = file_error(wth->fh);
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if (*err != 0)
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return -1;
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return 0;
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}
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if (file_seek(wth->fh, FILE_HDR_SIZE, SEEK_SET, err) == -1)
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return -1;
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wth->data_offset = FILE_HDR_SIZE;
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/* This is an nettl file */
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wth->file_type = WTAP_FILE_NETTL;
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wth->capture.nettl = g_malloc(sizeof(nettl_t));
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if (os_vers[0] == '1' && os_vers[1] == '1')
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wth->capture.nettl->is_hpux_11 = TRUE;
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else
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wth->capture.nettl->is_hpux_11 = FALSE;
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wth->subtype_read = nettl_read;
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wth->subtype_seek_read = nettl_seek_read;
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wth->subtype_close = nettl_close;
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wth->snapshot_length = 0; /* not available in header, only in frame */
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/* read the first header to take a guess at the file encap */
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bytes_read = file_read(dummy, 1, 4, wth->fh);
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if (bytes_read != 4) {
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if (*err != 0)
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return -1;
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if (bytes_read != 0) {
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*err = WTAP_ERR_SHORT_READ;
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g_free(wth->capture.nettl);
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return -1;
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}
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return 0;
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}
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subsys = g_ntohs(dummy[1]);
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switch (subsys) {
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case NETTL_SUBSYS_HPPB_FDDI :
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case NETTL_SUBSYS_EISA_FDDI :
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case NETTL_SUBSYS_PCI_FDDI :
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case NETTL_SUBSYS_HSC_FDDI :
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wth->file_encap = WTAP_ENCAP_NETTL_FDDI;
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break;
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case NETTL_SUBSYS_TOKEN :
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case NETTL_SUBSYS_PCI_TR :
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wth->file_encap = WTAP_ENCAP_NETTL_TOKEN_RING;
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break;
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case NETTL_SUBSYS_NS_LS_IP :
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case NETTL_SUBSYS_NS_LS_LOOPBACK :
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case NETTL_SUBSYS_NS_LS_TCP :
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case NETTL_SUBSYS_NS_LS_UDP :
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case NETTL_SUBSYS_NS_LS_IPV6 :
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wth->file_encap = WTAP_ENCAP_NETTL_RAW_IP;
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break;
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default:
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/* If this assumption is bad, the read will catch it */
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wth->file_encap = WTAP_ENCAP_NETTL_ETHERNET;
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}
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if (file_seek(wth->fh, FILE_HDR_SIZE, SEEK_SET, err) == -1) {
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g_free(wth->capture.nettl);
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return -1;
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}
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wth->data_offset = FILE_HDR_SIZE;
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wth->tsprecision = WTAP_FILE_TSPREC_USEC;
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return 1;
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}
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/* Read the next packet */
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static gboolean nettl_read(wtap *wth, int *err, gchar **err_info,
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long *data_offset)
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{
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int ret;
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gboolean fddihack=FALSE;
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/* Read record header. */
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*data_offset = wth->data_offset;
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ret = nettl_read_rec_header(wth, wth->fh, &wth->phdr, &wth->pseudo_header,
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err, err_info, &fddihack);
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if (ret <= 0) {
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/* Read error or EOF */
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return FALSE;
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}
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wth->data_offset += ret;
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/*
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* If the per-file encapsulation isn't known, set it to this
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* packet's encapsulation.
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*
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* If it *is* known, and it isn't this packet's encapsulation,
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* set it to WTAP_ENCAP_PER_PACKET, as this file doesn't
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* have a single encapsulation for all packets in the file.
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*/
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if (wth->file_encap == WTAP_ENCAP_UNKNOWN)
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wth->file_encap = wth->phdr.pkt_encap;
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else {
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if (wth->file_encap != wth->phdr.pkt_encap)
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wth->file_encap = WTAP_ENCAP_PER_PACKET;
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}
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/*
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* Read the packet data.
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*/
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buffer_assure_space(wth->frame_buffer, wth->phdr.caplen);
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if (!nettl_read_rec_data(wth->fh, buffer_start_ptr(wth->frame_buffer),
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wth->phdr.caplen, err, fddihack))
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return FALSE; /* Read error */
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wth->data_offset += wth->phdr.caplen;
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return TRUE;
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}
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static gboolean
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nettl_seek_read(wtap *wth, long seek_off,
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union wtap_pseudo_header *pseudo_header, guchar *pd,
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int length, int *err, gchar **err_info)
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{
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int ret;
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struct wtap_pkthdr phdr;
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gboolean fddihack=FALSE;
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if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
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return FALSE;
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/* Read record header. */
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ret = nettl_read_rec_header(wth, wth->random_fh, &phdr, pseudo_header,
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err, err_info, &fddihack);
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if (ret <= 0) {
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/* Read error or EOF */
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if (ret == 0) {
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/* EOF means "short read" in random-access mode */
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*err = WTAP_ERR_SHORT_READ;
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}
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return FALSE;
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}
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/*
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* Read the packet data.
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*/
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return nettl_read_rec_data(wth->random_fh, pd, length, err, fddihack);
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}
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static int
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nettl_read_rec_header(wtap *wth, FILE_T fh, struct wtap_pkthdr *phdr,
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union wtap_pseudo_header *pseudo_header, int *err,
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gchar **err_info, gboolean *fddihack)
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{
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int bytes_read;
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struct nettlrec_ns_ls_ip_hdr ip_hdr;
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struct nettlrec_ns_ls_drv_eth_hdr drv_eth_hdr;
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guint16 length;
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int offset = 0;
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int subsys;
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int padlen;
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guint16 dummy[2];
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guchar dummyc[10];
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errno = WTAP_ERR_CANT_READ;
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bytes_read = file_read(dummy, 1, 4, fh);
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if (bytes_read != 4) {
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*err = file_error(fh);
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if (*err != 0) return -1;
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if (bytes_read != 0) {
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*err = WTAP_ERR_SHORT_READ;
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return -1;
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}
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return 0;
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}
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offset += 4;
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subsys = g_ntohs(dummy[1]);
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switch (subsys) {
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case NETTL_SUBSYS_LAN100 :
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case NETTL_SUBSYS_EISA100BT :
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case NETTL_SUBSYS_BASE100 :
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case NETTL_SUBSYS_GSC100BT :
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case NETTL_SUBSYS_PCI100BT :
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case NETTL_SUBSYS_SPP100BT :
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case NETTL_SUBSYS_100VG :
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case NETTL_SUBSYS_GELAN :
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case NETTL_SUBSYS_BTLAN :
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case NETTL_SUBSYS_INTL100 :
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case NETTL_SUBSYS_IGELAN :
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case NETTL_SUBSYS_IETHER :
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case NETTL_SUBSYS_IXGBE :
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case NETTL_SUBSYS_HPPB_FDDI :
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case NETTL_SUBSYS_EISA_FDDI :
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case NETTL_SUBSYS_PCI_FDDI :
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case NETTL_SUBSYS_HSC_FDDI :
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case NETTL_SUBSYS_TOKEN :
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case NETTL_SUBSYS_PCI_TR :
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case NETTL_SUBSYS_NS_LS_IP :
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case NETTL_SUBSYS_NS_LS_LOOPBACK :
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case NETTL_SUBSYS_NS_LS_TCP :
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case NETTL_SUBSYS_NS_LS_UDP :
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case NETTL_SUBSYS_HP_APAPORT :
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case NETTL_SUBSYS_HP_APALACP :
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case NETTL_SUBSYS_NS_LS_IPV6 :
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case NETTL_SUBSYS_NS_LS_ICMPV6 :
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case NETTL_SUBSYS_NS_LS_ICMP :
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if( (subsys == NETTL_SUBSYS_NS_LS_IP)
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|| (subsys == NETTL_SUBSYS_NS_LS_LOOPBACK)
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|| (subsys == NETTL_SUBSYS_NS_LS_UDP)
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|| (subsys == NETTL_SUBSYS_NS_LS_TCP)
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|| (subsys == NETTL_SUBSYS_NS_LS_IPV6)) {
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phdr->pkt_encap = WTAP_ENCAP_NETTL_RAW_IP;
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} else if (subsys == NETTL_SUBSYS_NS_LS_ICMP) {
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phdr->pkt_encap = WTAP_ENCAP_NETTL_RAW_ICMP;
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} else if (subsys == NETTL_SUBSYS_NS_LS_ICMPV6) {
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phdr->pkt_encap = WTAP_ENCAP_NETTL_RAW_ICMPV6;
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} else if( (subsys == NETTL_SUBSYS_HPPB_FDDI)
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|| (subsys == NETTL_SUBSYS_EISA_FDDI)
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|| (subsys == NETTL_SUBSYS_PCI_FDDI)
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|| (subsys == NETTL_SUBSYS_HSC_FDDI) ) {
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phdr->pkt_encap = WTAP_ENCAP_NETTL_FDDI;
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} else if( (subsys == NETTL_SUBSYS_PCI_TR)
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|| (subsys == NETTL_SUBSYS_TOKEN) ) {
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phdr->pkt_encap = WTAP_ENCAP_NETTL_TOKEN_RING;
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} else {
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phdr->pkt_encap = WTAP_ENCAP_NETTL_ETHERNET;
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}
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bytes_read = file_read(&ip_hdr, 1, sizeof ip_hdr, fh);
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if (bytes_read != sizeof ip_hdr) {
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*err = file_error(fh);
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if (*err != 0) return -1;
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if (bytes_read != 0) {
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*err = WTAP_ERR_SHORT_READ;
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return -1;
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}
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return 0;
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}
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offset += sizeof ip_hdr;
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/* The packet header in HP-UX 11 nettl traces is 4 octets longer than
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* HP-UX 9 and 10 */
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if (wth->capture.nettl->is_hpux_11) {
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if (file_seek(fh, 4, SEEK_CUR, err) == -1) return -1;
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offset += 4;
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}
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/* HPPB FDDI has different inbound vs outbound trace records */
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if (subsys == NETTL_SUBSYS_HPPB_FDDI) {
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if (pntohl(&ip_hdr.kind) == NETTL_HDR_PDUIN) {
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/* inbound is very strange...
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there are an extra 3 bytes after the DSAP and SSAP
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for SNAP frames ???
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*/
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*fddihack=TRUE;
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length = pntohl(&ip_hdr.length);
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if (length <= 0) return 0;
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phdr->len = length;
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phdr->caplen = pntohl(&ip_hdr.caplen);
|
|
} else {
|
|
/* outbound appears to have variable padding */
|
|
bytes_read = file_read(dummyc, 1, 9, fh);
|
|
if (bytes_read != 9) {
|
|
*err = file_error(fh);
|
|
if (*err != 0) return -1;
|
|
if (bytes_read != 0) {
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
/* padding is usually either a total 11 or 16 bytes??? */
|
|
padlen = (int)dummyc[8];
|
|
if (file_seek(fh, padlen, SEEK_CUR, err) == -1) return -1;
|
|
padlen += 9;
|
|
offset += padlen;
|
|
length = pntohl(&ip_hdr.length);
|
|
if (length <= 0) return 0;
|
|
phdr->len = length - padlen;
|
|
length = pntohl(&ip_hdr.caplen);
|
|
phdr->caplen = length - padlen;
|
|
}
|
|
} else if ( (subsys == NETTL_SUBSYS_PCI_FDDI)
|
|
|| (subsys == NETTL_SUBSYS_EISA_FDDI)
|
|
|| (subsys == NETTL_SUBSYS_HSC_FDDI) ) {
|
|
/* other flavor FDDI cards have an extra 3 bytes of padding */
|
|
if (file_seek(fh, 3, SEEK_CUR, err) == -1) return -1;
|
|
offset += 3;
|
|
length = pntohl(&ip_hdr.length);
|
|
if (length <= 0) return 0;
|
|
phdr->len = length - 3;
|
|
length = pntohl(&ip_hdr.caplen);
|
|
phdr->caplen = length - 3;
|
|
} else if (subsys == NETTL_SUBSYS_NS_LS_LOOPBACK) {
|
|
/* LOOPBACK has an extra 26 bytes of padding */
|
|
if (file_seek(fh, 26, SEEK_CUR, err) == -1) return -1;
|
|
offset += 26;
|
|
length = pntohl(&ip_hdr.length);
|
|
if (length <= 0) return 0;
|
|
phdr->len = length - 26;
|
|
length = pntohl(&ip_hdr.caplen);
|
|
phdr->caplen = length - 26;
|
|
} else {
|
|
length = pntohl(&ip_hdr.length);
|
|
if (length <= 0) return 0;
|
|
phdr->len = length;
|
|
phdr->caplen = pntohl(&ip_hdr.caplen);
|
|
}
|
|
|
|
phdr->ts.secs = pntohl(&ip_hdr.sec);
|
|
phdr->ts.nsecs = pntohl(&ip_hdr.usec) * 1000;
|
|
break;
|
|
|
|
case NETTL_SUBSYS_NS_LS_DRIVER :
|
|
bytes_read = file_read(&ip_hdr, 1, sizeof ip_hdr, fh);
|
|
if (bytes_read != sizeof ip_hdr) {
|
|
*err = file_error(fh);
|
|
if (*err != 0) return -1;
|
|
if (bytes_read != 0) {
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
offset += sizeof ip_hdr;
|
|
|
|
/* The packet header in HP-UX 11 nettl traces is 4 octets longer than
|
|
* HP-UX 9 and 10 */
|
|
if (wth->capture.nettl->is_hpux_11) {
|
|
if (file_seek(fh, 4, SEEK_CUR, err) == -1) return -1;
|
|
offset += 4;
|
|
}
|
|
|
|
/* XXX we dont know how to identify this as ethernet frames, so
|
|
we assumes everything is. We will crash and burn for anything else */
|
|
/* for encapsulated 100baseT we do this */
|
|
phdr->pkt_encap = WTAP_ENCAP_NETTL_ETHERNET;
|
|
bytes_read = file_read(&drv_eth_hdr, 1, sizeof drv_eth_hdr, fh);
|
|
if (bytes_read != sizeof drv_eth_hdr) {
|
|
*err = file_error(fh);
|
|
if (*err != 0) return -1;
|
|
if (bytes_read != 0) {
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
offset += sizeof drv_eth_hdr;
|
|
|
|
length = pntohs(&drv_eth_hdr.length);
|
|
if (length <= 0) return 0;
|
|
phdr->len = length;
|
|
phdr->caplen = pntohs(&drv_eth_hdr.caplen);
|
|
|
|
phdr->ts.secs = pntohl(&ip_hdr.sec);
|
|
phdr->ts.nsecs = pntohl(&ip_hdr.usec) * 1000;
|
|
break;
|
|
|
|
case NETTL_SUBSYS_SX25L2:
|
|
case NETTL_SUBSYS_SX25L3:
|
|
bytes_read = file_read(&ip_hdr, 1, sizeof ip_hdr, fh);
|
|
if (bytes_read != sizeof ip_hdr) {
|
|
*err = file_error(fh);
|
|
if (*err != 0) return -1;
|
|
if (bytes_read != 0) {
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
offset += sizeof ip_hdr;
|
|
length = pntohl(&ip_hdr.length);
|
|
if (length <= 0) return 0;
|
|
phdr->len = length - 24;
|
|
phdr->caplen = pntohl(&ip_hdr.caplen) - 24;
|
|
phdr->ts.secs = pntohl(&ip_hdr.sec);
|
|
phdr->ts.nsecs = pntohl(&ip_hdr.usec) * 1000;
|
|
if (wth->capture.nettl->is_hpux_11)
|
|
padlen = 28;
|
|
else
|
|
padlen = 24;
|
|
if (file_seek(fh, padlen, SEEK_CUR, err) == -1) return -1;
|
|
offset += padlen;
|
|
phdr->pkt_encap = WTAP_ENCAP_NETTL_X25;
|
|
break;
|
|
|
|
default:
|
|
wth->file_encap = WTAP_ENCAP_PER_PACKET;
|
|
phdr->pkt_encap = WTAP_ENCAP_NETTL_UNKNOWN;
|
|
bytes_read = file_read(&ip_hdr, 1, sizeof ip_hdr, fh);
|
|
if (bytes_read != sizeof ip_hdr) {
|
|
*err = file_error(fh);
|
|
if (*err != 0) return -1;
|
|
if (bytes_read != 0) {
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
offset += sizeof ip_hdr;
|
|
length = pntohl(&ip_hdr.length);
|
|
if (length <= 0) return 0;
|
|
phdr->len = length;
|
|
phdr->caplen = pntohl(&ip_hdr.caplen);
|
|
phdr->ts.secs = pntohl(&ip_hdr.sec);
|
|
phdr->ts.nsecs = pntohl(&ip_hdr.usec) * 1000;
|
|
if (wth->capture.nettl->is_hpux_11) {
|
|
if (file_seek(fh, 4, SEEK_CUR, err) == -1) return -1;
|
|
offset += 4;
|
|
}
|
|
}
|
|
|
|
pseudo_header->nettl.subsys = subsys;
|
|
pseudo_header->nettl.devid = pntohl(&ip_hdr.devid);
|
|
pseudo_header->nettl.kind = pntohl(&ip_hdr.kind);
|
|
pseudo_header->nettl.pid = pntohl(&ip_hdr.pid);
|
|
pseudo_header->nettl.uid = pntohs(&ip_hdr.uid);
|
|
|
|
return offset;
|
|
}
|
|
|
|
static gboolean
|
|
nettl_read_rec_data(FILE_T fh, guchar *pd, int length, int *err, gboolean fddihack)
|
|
{
|
|
int bytes_read;
|
|
guchar *p=NULL;
|
|
guint8 dummy[3];
|
|
|
|
if (fddihack == TRUE) {
|
|
/* read in FC, dest, src, DSAP and SSAP */
|
|
if (file_read(pd, 1, 15, fh) == 15) {
|
|
if (pd[13] == 0xAA) {
|
|
/* it's SNAP, have to eat 3 bytes??? */
|
|
if (file_read(dummy, 1, 3, fh) == 3) {
|
|
p=pd+15;
|
|
bytes_read = file_read(p, 1, length-18, fh);
|
|
bytes_read += 18;
|
|
} else {
|
|
bytes_read = -1;
|
|
}
|
|
} else {
|
|
/* not SNAP */
|
|
p=pd+15;
|
|
bytes_read = file_read(p, 1, length-15, fh);
|
|
bytes_read += 15;
|
|
}
|
|
} else
|
|
bytes_read = -1;
|
|
} else
|
|
bytes_read = file_read(pd, 1, length, fh);
|
|
|
|
if (bytes_read != length) {
|
|
*err = file_error(fh);
|
|
if (*err == 0)
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static void nettl_close(wtap *wth)
|
|
{
|
|
g_free(wth->capture.nettl);
|
|
}
|
|
|
|
|
|
/* Returns 0 if we could write the specified encapsulation type,
|
|
an error indication otherwise. nettl files are WTAP_ENCAP_UNKNOWN
|
|
when they are first opened, so we allow that for tethereal read/write.
|
|
*/
|
|
|
|
int nettl_dump_can_write_encap(int encap)
|
|
{
|
|
|
|
switch (encap) {
|
|
case WTAP_ENCAP_ETHERNET:
|
|
case WTAP_ENCAP_FDDI_BITSWAPPED:
|
|
case WTAP_ENCAP_TOKEN_RING:
|
|
case WTAP_ENCAP_NETTL_ETHERNET:
|
|
case WTAP_ENCAP_NETTL_FDDI:
|
|
case WTAP_ENCAP_NETTL_TOKEN_RING:
|
|
case WTAP_ENCAP_NETTL_RAW_IP:
|
|
case WTAP_ENCAP_NETTL_RAW_ICMP:
|
|
case WTAP_ENCAP_NETTL_RAW_ICMPV6:
|
|
/*
|
|
case WTAP_ENCAP_NETTL_X25:
|
|
*/
|
|
case WTAP_ENCAP_PER_PACKET:
|
|
case WTAP_ENCAP_UNKNOWN:
|
|
case WTAP_ENCAP_NETTL_UNKNOWN:
|
|
return 0;
|
|
default:
|
|
return WTAP_ERR_UNSUPPORTED_ENCAP;
|
|
}
|
|
}
|
|
|
|
|
|
/* Returns TRUE on success, FALSE on failure;
|
|
sets "*err" to an error code on failure */
|
|
gboolean nettl_dump_open(wtap_dumper *wdh, gboolean cant_seek _U_, int *err)
|
|
{
|
|
struct nettl_file_hdr file_hdr;
|
|
size_t nwritten;
|
|
|
|
/* This is a nettl file */
|
|
wdh->subtype_write = nettl_dump;
|
|
wdh->subtype_close = NULL;
|
|
|
|
/* Write the file header. */
|
|
memset(&file_hdr,0,sizeof(file_hdr));
|
|
memcpy(file_hdr.magic,nettl_magic_hpux10,sizeof(file_hdr.magic));
|
|
strcpy(file_hdr.file_name,"/tmp/ethereal.TRC000");
|
|
strcpy(file_hdr.tz,"UTC");
|
|
strcpy(file_hdr.host_name,"ethereal");
|
|
strcpy(file_hdr.os_vers,"B.11.11");
|
|
file_hdr.os_v=0x55;
|
|
strcpy(file_hdr.model,"9000/800");
|
|
file_hdr.unknown=g_htons(0x406);
|
|
nwritten = fwrite(&file_hdr, 1, sizeof file_hdr, wdh->fh);
|
|
if (nwritten != sizeof(file_hdr)) {
|
|
if (nwritten == 0 && ferror(wdh->fh))
|
|
*err = errno;
|
|
else
|
|
*err = WTAP_ERR_SHORT_WRITE;
|
|
return FALSE;
|
|
}
|
|
wdh->bytes_dumped += sizeof(file_hdr);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Write a record for a packet to a dump file.
|
|
Returns TRUE on success, FALSE on failure. */
|
|
static gboolean nettl_dump(wtap_dumper *wdh,
|
|
const struct wtap_pkthdr *phdr,
|
|
const union wtap_pseudo_header *pseudo_header _U_,
|
|
const guchar *pd, int *err)
|
|
{
|
|
struct nettlrec_dump_hdr rec_hdr;
|
|
size_t nwritten;
|
|
guint8 padding=0;
|
|
|
|
memset(&rec_hdr,0,sizeof(rec_hdr));
|
|
rec_hdr.hdr_len = g_htons(sizeof(rec_hdr));
|
|
rec_hdr.hdr.kind = g_htonl(NETTL_HDR_PDUIN);
|
|
rec_hdr.hdr.sec = g_htonl(phdr->ts.secs);
|
|
rec_hdr.hdr.usec = g_htonl(phdr->ts.nsecs/1000);
|
|
rec_hdr.hdr.caplen = g_htonl(phdr->caplen);
|
|
rec_hdr.hdr.length = g_htonl(phdr->len);
|
|
rec_hdr.hdr.devid = -1;
|
|
rec_hdr.hdr.pid = -1;
|
|
rec_hdr.hdr.uid = -1;
|
|
|
|
switch (phdr->pkt_encap) {
|
|
|
|
case WTAP_ENCAP_NETTL_FDDI:
|
|
/* account for pad bytes */
|
|
rec_hdr.hdr.caplen = g_htonl(phdr->caplen + 3);
|
|
rec_hdr.hdr.length = g_htonl(phdr->len + 3);
|
|
/* fall through and fill the rest of the fields */
|
|
case WTAP_ENCAP_NETTL_ETHERNET:
|
|
case WTAP_ENCAP_NETTL_TOKEN_RING:
|
|
case WTAP_ENCAP_NETTL_RAW_IP:
|
|
case WTAP_ENCAP_NETTL_RAW_ICMP:
|
|
case WTAP_ENCAP_NETTL_RAW_ICMPV6:
|
|
case WTAP_ENCAP_NETTL_UNKNOWN:
|
|
rec_hdr.subsys = g_htons(pseudo_header->nettl.subsys);
|
|
rec_hdr.hdr.devid = g_htonl(pseudo_header->nettl.devid);
|
|
rec_hdr.hdr.kind = g_htonl(pseudo_header->nettl.kind);
|
|
rec_hdr.hdr.pid = g_htonl(pseudo_header->nettl.pid);
|
|
rec_hdr.hdr.uid = g_htons(pseudo_header->nettl.uid);
|
|
break;
|
|
|
|
case WTAP_ENCAP_RAW_IP:
|
|
rec_hdr.subsys = g_htons(NETTL_SUBSYS_NS_LS_IP);
|
|
break;
|
|
|
|
case WTAP_ENCAP_ETHERNET:
|
|
rec_hdr.subsys = g_htons(NETTL_SUBSYS_BTLAN);
|
|
break;
|
|
|
|
case WTAP_ENCAP_FDDI_BITSWAPPED:
|
|
rec_hdr.subsys = g_htons(NETTL_SUBSYS_PCI_FDDI);
|
|
/* account for pad bytes */
|
|
rec_hdr.hdr.caplen = g_htonl(phdr->caplen + 3);
|
|
rec_hdr.hdr.length = g_htonl(phdr->len + 3);
|
|
break;
|
|
|
|
case WTAP_ENCAP_TOKEN_RING:
|
|
rec_hdr.subsys = g_htons(NETTL_SUBSYS_PCI_TR);
|
|
break;
|
|
/*
|
|
case WTAP_ENCAP_NETTL_X25:
|
|
rec_hdr.hdr.caplen = g_htonl(phdr->caplen + 24);
|
|
rec_hdr.hdr.length = g_htonl(phdr->len + 24);
|
|
rec_hdr.subsys = g_htons(pseudo_header->nettl.subsys);
|
|
rec_hdr.hdr.devid = g_htonl(pseudo_header->nettl.devid);
|
|
rec_hdr.hdr.kind = g_htonl(pseudo_header->nettl.kind);
|
|
rec_hdr.hdr.pid = g_htonl(pseudo_header->nettl.pid);
|
|
rec_hdr.hdr.uid = g_htons(pseudo_header->nettl.uid);
|
|
break;
|
|
*/
|
|
default:
|
|
/* found one we don't support */
|
|
*err = WTAP_ERR_UNSUPPORTED_ENCAP;
|
|
return FALSE;
|
|
}
|
|
|
|
nwritten = fwrite(&rec_hdr, 1, sizeof(rec_hdr), wdh->fh);
|
|
if (nwritten != sizeof(rec_hdr)) {
|
|
if (nwritten == 0 && ferror(wdh->fh))
|
|
*err = errno;
|
|
else
|
|
*err = WTAP_ERR_SHORT_WRITE;
|
|
return FALSE;
|
|
}
|
|
wdh->bytes_dumped += sizeof(rec_hdr);
|
|
|
|
if ((phdr->pkt_encap == WTAP_ENCAP_FDDI_BITSWAPPED) ||
|
|
(phdr->pkt_encap == WTAP_ENCAP_NETTL_FDDI)) {
|
|
/* add those weird 3 bytes of padding */
|
|
nwritten = fwrite(&padding, 1, 3, wdh->fh);
|
|
if (nwritten != 3) {
|
|
if (nwritten == 0 && ferror(wdh->fh))
|
|
*err = errno;
|
|
else
|
|
*err = WTAP_ERR_SHORT_WRITE;
|
|
return FALSE;
|
|
}
|
|
wdh->bytes_dumped += 3;
|
|
}
|
|
/*
|
|
} else if (phdr->pkt_encap == WTAP_ENCAP_NETTL_X25) {
|
|
nwritten = fwrite(&padding, 1, 24, wdh->fh);
|
|
if (nwritten != 24) {
|
|
if (nwritten == 0 && ferror(wdh->fh))
|
|
*err = errno;
|
|
else
|
|
*err = WTAP_ERR_SHORT_WRITE;
|
|
return FALSE;
|
|
}
|
|
wdh->bytes_dumped += 24;
|
|
}
|
|
*/
|
|
|
|
/* write actual PDU data */
|
|
|
|
nwritten = fwrite(pd, 1, phdr->caplen, wdh->fh);
|
|
if (nwritten != phdr->caplen) {
|
|
if (nwritten == 0 && ferror(wdh->fh))
|
|
*err = errno;
|
|
else
|
|
*err = WTAP_ERR_SHORT_WRITE;
|
|
return FALSE;
|
|
}
|
|
wdh->bytes_dumped += phdr->caplen;
|
|
|
|
return TRUE;
|
|
}
|