3 * $Id: toshiba.c,v 1.3 1999/11/11 06:29:59 gram Exp $
6 * Copyright (c) 1998 by Gilbert Ramirez <gram@xiexie.org>
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version 2
11 * of the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
35 /* This module reads the output of the 'snoop' command in the Toshiba
36 * TR-600 and TR-650 "Compact" ISDN Routers. You can telnet to the
37 * router and run 'snoop' on the different channels, and at different
38 * detail levels. Be sure to choose 'dump' to get the hex dump.
39 * The 'snoop' command has nothing to do with the Solaris 'snoop'
40 * command, except that they both capture packets.
44 Example 'snoop' output data:
47 Script started on Thu Sep 9 21:48:49 1999
48 \e]0;gram@nirvana:/tmp
\a$ telnet 10.0.0.254
\r
49 Trying 10.0.0.254...
\r
50 Connected to 10.0.0.254.
\r
51 Escape character is '^]'.
\r
54 TR-600(tr600) System Console
\r
58 *--------------------------------------------------------*
\r
59 | T O S H I B A T R - 6 0 0 |
\r
60 | < Compact Router > |
\r
63 | (C) Copyright TOSHIBA Corp. 1997 All rights reserved. |
\r
64 *--------------------------------------------------------*
\r
67 Trace start?(on/off/dump/dtl)->dump
\r
70 Trace start(Dump Mode)...
\r
72 tr600>[No.1] 00:00:09.14 B1:1 Tx 207.193.26.136->151.164.1.8 DNS SPORT=1028 LEN=38 CHKSUM=4FD4 ID=2390 Query RD QCNT=1 pow.zing.org?
\r
73 OFFSET 0001-0203-0405-0607-0809-0A0B-0C0D-0E0F 0123456789ABCDEF LEN=67
\r
74 0000 : FF03 003D C000 0008 2145 0000 3A12 6500 ...=....!E..:.e.
\r
75 0010 : 003F 11E6 58CF C11A 8897 A401 0804 0400 .?..X...........
\r
76 0020 : 3500 264F D409 5601 0000 0100 0000 0000 5.&O..V.........
\r
77 0030 : 0003 706F 7704 7A69 6E67 036F 7267 0000 ..pow.zing.org..
\r
80 [No.2] 00:00:09.25 B1:1 Rx 151.164.1.8->207.193.26.136 DNS DPORT=1028 LEN=193 CHKSUM=3E06 ID=2390 Answer RD RA QCNT=1 pow.zing.org? ANCNT=1 pow.zing.org=206.57.36.90 TTL=2652
\r
81 OFFSET 0001-0203-0405-0607-0809-0A0B-0C0D-0E0F 0123456789ABCDEF LEN=222
\r
82 0000 : FF03 003D C000 0013 2145 0000 D590 9340 ...=....!E.....@
\r
83 0010 : 00F7 116F 8E97 A401 08CF C11A 8800 3504 ...o..........5.
\r
84 0020 : 0400 C13E 0609 5681 8000 0100 0100 0300 ...>..V.........
\r
85 0030 : 0303 706F 7704 7A69 6E67 036F 7267 0000 ..pow.zing.org..
\r
86 0040 : 0100 01C0 0C00 0100 0100 000A 5C00 04CE ............\...
\r
87 0050 : 3924 5A04 5A49 4E47 036F 7267 0000 0200 9$Z.ZING.org....
\r
88 0060 : 0100 016F 5B00 0D03 4841 4E03 5449 5703 ...o[...HAN.TIW.
\r
89 0070 : 4E45 5400 C02E 0002 0001 0001 6F5B 0006 NET.........o[..
\r
90 0080 : 034E 5331 C02E C02E 0002 0001 0001 6F5B .NS1..........o[
\r
91 0090 : 001C 0854 414C 4945 5349 4E0D 434F 4E46 ...TALIESIN.CONF
\r
92 00A0 : 4142 554C 4154 494F 4E03 434F 4D00 C042 ABULATION.COM..B
\r
93 00B0 : 0001 0001 0001 51EC 0004 CE39 2406 C05B ......Q....9$..[
\r
94 00C0 : 0001 0001 0001 6F5B 0004 CE39 245A C06D ......o[...9$Z.m
\r
95 00D0 : 0001 0001 0001 4521 0004 187C 1F01 ......E!...|..
\r
99 /* Magic text to check for toshiba-ness of file */
100 static const char toshiba_hdr_magic[] =
101 { 'T', ' ', 'O', ' ', 'S', ' ', 'H', ' ', 'I', ' ', 'B', ' ', 'A' };
102 #define TOSHIBA_HDR_MAGIC_SIZE (sizeof toshiba_hdr_magic / sizeof toshiba_hdr_magic[0])
104 /* Magic text for start of packet */
105 static const char toshiba_rec_magic[] = { '[', 'N', 'o', '.' };
106 #define TOSHIBA_REC_MAGIC_SIZE (sizeof toshiba_rec_magic / sizeof toshiba_rec_magic[0])
108 static int toshiba_read(wtap *wth, int *err);
109 static gboolean parse_single_hex_dump_line(char* rec, guint8 *buf, int byte_offset);
110 static int parse_toshiba_hex_dump(FILE *fh, int pkt_len, guint8* buf, int *err);
111 static int parse_toshiba_rec_hdr(wtap *wth, FILE *fh, int *err);
112 static int parse_toshiba(FILE *fh, guint8 *pd, int len);
114 /* Seeks to the beginning of the next packet, and returns the
115 byte offset. Returns -1 on failure. */
116 /* XXX - Handle I/O errors. */
117 static int toshiba_seek_next_packet(wtap *wth)
122 while ((byte = file_getc(wth->fh)) != EOF) {
123 if (byte == toshiba_rec_magic[level]) {
125 if (level >= TOSHIBA_REC_MAGIC_SIZE) {
126 /* note: we're leaving file pointer right after the magic characters */
127 return file_tell(wth->fh) + 1;
136 #define TOSHIBA_HEADER_LINES_TO_CHECK 200
137 #define TOSHIBA_LINE_LENGTH 240
139 /* Look through the first part of a file to see if this is
140 * a Toshiba trace file.
142 * Returns TRUE if it is, FALSE if it isn't.
144 static gboolean toshiba_check_file_type(wtap *wth)
146 char buf[TOSHIBA_LINE_LENGTH];
147 int reclen, i, line, byte, level;
149 buf[TOSHIBA_LINE_LENGTH-1] = 0;
151 for (line = 0; line < TOSHIBA_HEADER_LINES_TO_CHECK; line++) {
152 if (file_gets(buf, TOSHIBA_LINE_LENGTH, wth->fh) >= 0) {
154 reclen = strlen(buf);
155 if (reclen < TOSHIBA_HDR_MAGIC_SIZE) {
160 for (i = 0; i < reclen; i++) {
162 if (byte == toshiba_hdr_magic[level]) {
164 if (level >= TOSHIBA_HDR_MAGIC_SIZE) {
181 /* XXX - return -1 on I/O error and actually do something with 'err'. */
182 int toshiba_open(wtap *wth, int *err)
184 /* Reset file position and look for Toshiba header */
185 file_seek(wth->fh, 0, SEEK_SET);
187 if (!toshiba_check_file_type(wth)) {
191 wth->data_offset = 0;
192 wth->file_encap = WTAP_ENCAP_PER_PACKET;
193 wth->file_type = WTAP_FILE_TOSHIBA;
194 wth->snapshot_length = 16384; /* just guessing */
195 wth->subtype_read = toshiba_read;
200 /* Find the next packet and parse it; called from wtap_loop(). */
201 static int toshiba_read(wtap *wth, int *err)
207 /* Find the next packet */
208 offset = toshiba_seek_next_packet(wth);
213 /* Parse the header */
214 pkt_len = parse_toshiba_rec_hdr(wth, wth->fh, err);
216 /* Make sure we have enough room for the packet */
217 buffer_assure_space(wth->frame_buffer, wth->snapshot_length);
218 buf = buffer_start_ptr(wth->frame_buffer);
220 /* Convert the ASCII hex dump to binary data */
221 parse_toshiba_hex_dump(wth->fh, pkt_len, buf, err);
223 wth->data_offset = offset;
227 /* Used to read packets in random-access fashion */
229 toshiba_seek_read (FILE *fh, int seek_off, guint8 *pd, int len)
231 file_seek(fh, seek_off - 1, SEEK_SET);
232 return parse_toshiba(fh, pd, len);
235 /* Used to read packets in random-access fashion */
237 parse_toshiba(FILE *fh, guint8 *pd, int len)
242 pkt_len = parse_toshiba_rec_hdr(NULL, fh, &err);
244 if (pkt_len != len) {
248 parse_toshiba_hex_dump(fh, pkt_len, pd, &err);
253 /* Parses a packet record header. */
255 parse_toshiba_rec_hdr(wtap *wth, FILE *fh, int *err)
257 char line[TOSHIBA_LINE_LENGTH];
258 int num_items_scanned;
259 int pkt_len, pktnum, hr, min, sec, csec;
260 char channel[10], direction[10];
262 /* Our file pointer should be on the line containing the
263 * summary information for a packet. Read in that line and
264 * extract the useful information
266 if (file_gets(line, TOSHIBA_LINE_LENGTH, fh) < 0) {
267 *err = file_error(fh);
269 *err = WTAP_ERR_SHORT_READ;
274 /* Find text in line after "[No." */
275 num_items_scanned = sscanf(line, "%d] %d:%d:%d.%d %s %s",
276 &pktnum, &hr, &min, &sec, &csec, channel, direction);
278 if (num_items_scanned != 7) {
279 *err = WTAP_ERR_BAD_RECORD;
283 /* The next line contains mostly junk, but it does contain the
285 if (file_gets(line, TOSHIBA_LINE_LENGTH, fh) < 0) {
286 *err = file_error(fh);
288 *err = WTAP_ERR_SHORT_READ;
293 num_items_scanned = sscanf(line+64, "LEN=%d", &pkt_len);
294 if (num_items_scanned != 1) {
295 *err = WTAP_ERR_BAD_RECORD;
300 wth->phdr.ts.tv_sec = 0;
301 wth->phdr.ts.tv_usec = 0;
302 wth->phdr.caplen = pkt_len;
303 wth->phdr.len = pkt_len;
304 switch (channel[0]) {
306 wth->phdr.pkt_encap = WTAP_ENCAP_PPP;
310 wth->phdr.pkt_encap = WTAP_ENCAP_LAPD;
311 wth->phdr.pseudo_header.lapd.from_network_to_user =
312 (direction[0] == 'R' ? TRUE : FALSE );
316 wth->phdr.pkt_encap = WTAP_ENCAP_ETHERNET;
323 /* Converts ASCII hex dump to binary data */
325 parse_toshiba_hex_dump(FILE *fh, int pkt_len, guint8* buf, int *err)
327 char line[TOSHIBA_LINE_LENGTH];
330 /* Calculate the number of hex dump lines, each
331 * containing 16 bytes of data */
332 hex_lines = pkt_len / 16 + ((pkt_len % 16) ? 1 : 0);
334 for (i = 0; i < hex_lines; i++) {
335 if (file_gets(line, TOSHIBA_LINE_LENGTH, fh) < 0) {
336 *err = file_error(fh);
338 *err = WTAP_ERR_SHORT_READ;
342 if (!parse_single_hex_dump_line(line, buf, i * 16)) {
343 *err = WTAP_ERR_BAD_RECORD;
352 0123456789012345678901234567890123456789012345
353 0000 : FF03 003D C000 0008 2145 0000 3A12 6500 ...=....!E..:.e.
\r
354 0010 : 003F 11E6 58CF C11A 8897 A401 0804 0400 .?..X...........
\r
359 #define HEX_LENGTH ((8 * 4) + 7) /* eight clumps of 4 bytes with 7 inner spaces */
361 /* Take a string representing one line from a hex dump and converts the
362 * text to binary data. We check the printed offset with the offset
363 * we are passed to validate the record. We place the bytes in the buffer
364 * at the specified offset.
366 * In the process, we're going to write all over the string.
368 * Returns TRUE if good hex dump, FALSE if bad.
371 parse_single_hex_dump_line(char* rec, guint8 *buf, int byte_offset) {
378 /* Get the byte_offset directly from the record */
381 value = strtoul(s, NULL, 16);
383 if (value != byte_offset) {
387 /* Go through the substring representing the values and:
388 * 1. Replace any spaces with '0's
389 * 2. Place \0's every 5 bytes (to terminate the string)
391 * Then read the eight sets of hex bytes
394 for (pos = START_POS; pos < START_POS + HEX_LENGTH; pos++) {
395 if (rec[pos] == ' ') {
401 for (i = 0; i < 8; i++) {
404 word_value = (guint16) strtoul(&rec[pos], NULL, 16);
405 buf[byte_offset + i * 2 + 0] = (guint8) (word_value >> 8);
406 buf[byte_offset + i * 2 + 1] = (guint8) (word_value & 0x00ff);