summaryrefslogtreecommitdiffstats
path: root/wiretap/ascend_parser.lemon
blob: 89df92680f7397b3f907a2935dface6c1df7a879 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
%include {
/* ascend_parser.lemon
 *
 * Wiretap Library
 * Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */

/*
    Example 'pridisp' output data - one paragraph/frame:

PRI-XMIT-27: (task "l1Task" at 0x10216fe0, time: 560194.01) 4 octets @ 0x1027c5b0
  [0000]: 00 01 01 a9                                         ....
PRI-RCV-27: (task "idle task" at 0x10123570, time: 560194.01) 4 octets @ 0x1027fb00
  [0000]: 00 01 01 dd

    Example 'pridisp' output data - two paragraphs/frame for XMIT case only:

PRI-XMIT-19/1:  (task "l1Task" at 0x10216840, time: 274759.98) 4 octets @ 0x1027f230
  [0000]: 00 01 30 d8                                         ..0.
PRI-XMIT-19/2 (task "l1Task" at 0x10216840, time: 274759.98) 11 octets @ 0x1027f234
  [0000]: 08 02 8c bf 02 18 04 e9  82 83 8f                   ........ ...

    Example 'ether-disp' output data:

ETHER3ND RECV: (task "_sarTask" at 0x802c6eb0, time: 259848.03) 775 octets @ 0xa8fb2020
  [0000]: 00 d0 52 04 e7 1e 08 00  20 ae 51 b5 08 00 45 00    ..R..... .Q...E.
  [0010]: 02 f9 05 e6 40 00 3f 11  6e 39 87 fe c4 95 3c 3c    ....@.?.  n9....<<
  [0020]: 3c 05 13 c4 13 c4 02 e5  ef ed 49 4e 56 49 54 45    <.......  ..INVITE
  [0030]: 20 73 69 70 3a 35 32 30  37 33 40 36 30 2e 36 30     sip:520 73@60.60
  [0040]: 2e 36 30 2e 35 20 53 49  50 2f 32 2e 30 0d 0a 56    .60.5 SI P/2.0..V
  [0050]: 69 61 3a 20 53 49 50 2f  32 2e 30 2f 55 44 50 20    ia: SIP/ 2.0/UDP
  [0060]: 31 33 35 2e                                         135.

    Example 'wandsess' output data:

RECV-iguana:241:(task: B02614C0, time: 1975432.85) 49 octets @ 8003BD94
  [0000]: FF 03 00 3D C0 06 CA 22 2F 45 00 00 28 6A 3B 40
  [0010]: 00 3F 03 D7 37 CE 41 62 12 CF 00 FB 08 20 27 00
  [0020]: 50 E4 08 DD D7 7C 4C 71 92 50 10 7D 78 67 C8 00
  [0030]: 00
XMIT-iguana:241:(task: B04E12C0, time: 1975432.85) 53 octets @ 8009EB16
  [0000]: FF 03 00 3D C0 09 1E 31 21 45 00 00 2C 2D BD 40
  [0010]: 00 7A 06 D8 B1 CF 00 FB 08 CE 41 62 12 00 50 20
  [0020]: 29 7C 4C 71 9C 9A 6A 93 A4 60 12 22 38 3F 10 00
  [0030]: 00 02 04 05 B4

    Example 'wdd' output data:

Date: 01/12/1990.  Time: 12:22:33
Cause an attempt to place call to 14082750382
WD_DIALOUT_DISP: chunk 2515EE type IP.
(task: 251790, time: 994953.28) 44 octets @ 2782B8
  [0000]: 00 C0 7B 71 45 6C 00 60 08 16 AA 51 08 00 45 00
  [0010]: 00 2C 66 1C 40 00 80 06 53 F6 AC 14 00 18 CC 47
  [0020]: C8 45 0A 31 00 50 3B D9 5B 75 00 00

    The following output comes from a MAX with Software 7.2.3:

RECV-187:(task: B050B480, time: 18042248.03) 100 octets @ 800012C0
  [0000]: FF 03 00 21 45 00 00 60 E3 49 00 00 7F 11 FD 7B
  [0010]: C0 A8 F7 05 8A C8 18 51 00 89 00 89 00 4C C7 C1
  [0020]: CC 8E 40 00 00 01 00 00 00 00 00 01 20 45 4A 45
  [0030]: 42 45 43 45 48 43 4E 46 43 46 41 43 41 43 41 43
  [0040]: 41 43 41 43 41 43 41 43 41 43 41 42 4E 00 00 20
  [0050]: 00 01 C0 0C 00 20 00 01 00 04 93 E0 00 06 60 00
  [0060]: C0 A8 F7 05
XMIT-187:(task: B0292CA0, time: 18042248.04) 60 octets @ 800AD576
  [0000]: FF 03 00 21 45 00 00 38 D7 EE 00 00 0F 01 11 2B
  [0010]: 0A FF FF FE C0 A8 F7 05 03 0D 33 D3 00 00 00 00
  [0020]: 45 00 00 60 E3 49 00 00 7E 11 FE 7B C0 A8 F7 05
  [0030]: 8A C8 18 51 00 89 00 89 00 4C C7 C1
RECV-187:(task: B0292CA0, time: 18042251.92) 16 octets @ 800018E8
  [0000]: FF 03 C0 21 09 01 00 0C DE 61 96 4B 00 30 94 92

  In TAOS 8.0, Lucent slightly changed the format as follows:

    Example 'wandisp' output data (TAOS 8.0.3): (same format is used
    for 'wanopen' and 'wannext' command)

RECV-14: (task "idle task" at 0xb05e6e00, time: 1279.01) 29 octets @ 0x8000e0fc
  [0000]: ff 03 c0 21 01 01 00 19  01 04 05 f4 11 04 05 f4    ...!.... ........
  [0010]: 13 09 03 00 c0 7b 9a 9f  2d 17 04 10 00             .....{.. -....
XMIT-14: (task "idle task" at 0xb05e6e00, time: 1279.02) 38 octets @ 0x8007fd56
  [0000]: ff 03 c0 21 01 01 00 22  00 04 00 00 01 04 05 f4    ...!..." ........
  [0010]: 03 05 c2 23 05 11 04 05  f4 13 09 03 00 c0 7b 80    ...#.... ......{.
  [0020]: 7c ef 17 04 0e 00                                   |.....
XMIT-14: (task "idle task" at 0xb05e6e00, time: 1279.02) 29 octets @ 0x8007fa36
  [0000]: ff 03 c0 21 02 01 00 19  01 04 05 f4 11 04 05 f4    ...!.... ........
  [0010]: 13 09 03 00 c0 7b 9a 9f  2d 17 04 10 00             .....{.. -....

    Example 'wandsess' output data (TAOS 8.0.3):

RECV-Max7:20: (task "_brouterControlTask" at 0xb094ac20, time: 1481.50) 20 octets @ 0x8000d198
  [0000]: ff 03 00 3d c0 00 00 04  80 fd 02 01 00 0a 11 06    ...=.... ........
  [0010]: 00 01 01 03                                         ....
XMIT-Max7:20: (task "_brouterControlTask" at 0xb094ac20, time: 1481.51) 26 octets @ 0x800806b6
  [0000]: ff 03 00 3d c0 00 00 00  80 21 01 01 00 10 02 06    ...=.... .!......
  [0010]: 00 2d 0f 01 03 06 89 64  03 08                      .-.....d ..
XMIT-Max7:20: (task "_brouterControlTask" at 0xb094ac20, time: 1481.51) 20 octets @ 0x8007f716
  [0000]: ff 03 00 3d c0 00 00 01  80 fd 01 01 00 0a 11 06    ...=.... ........
  [0010]: 00 01 01 03                                         ....

  The changes since TAOS 7.X are:

    1) White space is added before "(task".
    2) Task has a name, indicated by a subsequent string surrounded by a
       double-quote.
    3) Address expressed in hex number has a preceding "0x".
    4) Hex numbers are in lower case.
    5) There is a character display corresponding to hex data in each line.

 */

#include "config.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>

#include "wtap-int.h"
#include "ascendtext.h"
#include "ascend-int.h"
#include "ascend_parser.h"
#include "ascend_scanner_lex.h"
#include "file_wrappers.h"
#include <wsutil/wslog.h>

#define NO_USER "<none>"

static void *AscendParserAlloc(void *(*mallocProc)(size_t));
static void AscendParser(void *yyp, int yymajor, ascend_token_t yyminor, ascend_state_t *state);
static void AscendParserFree(void *p, void (*freeProc)(void*));

#if 0
#define ASCEND_PARSER_DEBUG 1
#undef NDEBUG
#define ascend_debug(...) ws_warning(__VA_ARGS__)
#else
#define ascend_debug(...)
#endif

DIAG_OFF_LEMON()
} /* end of %include */

%code {
DIAG_ON_LEMON()
}

%name AscendParser

%extra_argument { ascend_state_t *parser_state }

%token_type { ascend_token_t }

%token_destructor {
    (void) parser_state;
    (void) yypminor;
}

%type STRING { ascend_token_t* }
%type KEYWORD { ascend_token_t* }
%type WDD_DATE { ascend_token_t* }
%type WDD_DECNUM { ascend_token_t* }
%type WDD_TIME { ascend_token_t* }
%type WDD_CAUSE { ascend_token_t* }
%type WDD_CALLNUM { ascend_token_t* }
%type WDD_CHUNK { ascend_token_t* }
%type COUNTER { ascend_token_t* }
%type SLASH_SUFFIX { ascend_token_t* }

%type WDS_PREFIX { ascend_token_t* }
%type ISDN_PREFIX { ascend_token_t* }
%type ETHER_PREFIX { ascend_token_t* }
%type DECNUM { ascend_token_t* }
%type YEAR { ascend_token_t* }
%type MONTH { ascend_token_t* }
%type MDAY { ascend_token_t* }
%type HEXNUM { ascend_token_t* }

%type HEXBYTE { ascend_token_t* }

data_packet ::= ether_hdr datagroup .
data_packet ::= deferred_isdn_hdr datagroup deferred_isdn_hdr datagroup .
data_packet ::= isdn_hdr datagroup .
data_packet ::= wds_hdr datagroup .
data_packet ::= wds8_hdr datagroup .
data_packet ::= wdp7_hdr datagroup .
data_packet ::= wdp8_hdr datagroup .
data_packet ::= wdd_date wdd_hdr datagroup .
data_packet ::= wdd_hdr datagroup .

%type isdn_prefix { guint16 }
isdn_prefix(U16) ::= ISDN_PREFIX(A_TOK) . { U16 = A_TOK.u16_val; }

%type ether_prefix { guint16 }
ether_prefix(U16) ::= ETHER_PREFIX(A_TOK) . { U16 = A_TOK.u16_val; }

%type wds_prefix { guint16 }
wds_prefix(U16) ::= WDS_PREFIX(A_TOK) . { U16 = A_TOK.u16_val; }

string ::= STRING .

%type decnum { guint32 }
decnum(U32) ::= DECNUM(A_TOK) . { U32 = A_TOK.u32_val; }

%type hexnum { guint32 }
hexnum(U32) ::= HEXNUM(A_TOK) . { U32 = A_TOK.u32_val; }

%type wdd_decnum { guint32 }
wdd_decnum(U32) ::= WDD_DECNUM(A_TOK) . { U32 = A_TOK.u32_val; }

/*
  pridisp special case - I-frame header printed separately from contents,
  one frame across two messages.

PRI-XMIT-0/1:  (task "l1Task" at 0x80152b20, time: 283529.65) 4 octets @
0x80128220
  [0000]: 00 01 ae b2                                         ....
PRI-XMIT-0/2 (task "l1Task" at 0x80152b20, time: 283529.65) 10 octets @
0x80128224
  [0000]: 08 02 d7 e3 02 18 03 a9  83 8a                      ........

*/
deferred_isdn_hdr ::= isdn_prefix(TYPE) decnum(SESS) SLASH_SUFFIX KEYWORD string KEYWORD hexnum(TASK) KEYWORD decnum(SECS) decnum(USECS) decnum(WIRELEN) KEYWORD HEXNUM . {
    parser_state->wirelen += WIRELEN;
    parser_state->secs = SECS;
    parser_state->usecs = USECS;
    if (parser_state->pseudo_header != NULL) {
        parser_state->pseudo_header->type = TYPE;
        parser_state->pseudo_header->sess = SESS;
        parser_state->pseudo_header->call_num[0] = '\0';
        parser_state->pseudo_header->chunk = 0;
        parser_state->pseudo_header->task = TASK;
    }
    /* because we have two data groups */
    parser_state->first_hexbyte = 0;
}

/*
PRI-XMIT-19:  (task "l1Task" at 0x10216840, time: 274758.67) 4 octets @ 0x1027c1c0
 ... or ...
PRI-RCV-27:  (task "idle task" at 0x10123570, time: 560194.01) 4 octets @ 0x1027fb00
*/
isdn_hdr ::= isdn_prefix(TYPE) decnum(SESS) KEYWORD string KEYWORD hexnum(TASK) KEYWORD decnum(SECS) decnum(USECS) decnum(WIRELEN) KEYWORD HEXNUM . {
    parser_state->wirelen += WIRELEN;
    parser_state->secs = SECS;
    parser_state->usecs = USECS;
    if (parser_state->pseudo_header != NULL) {
        parser_state->pseudo_header->type = TYPE;
        parser_state->pseudo_header->sess = SESS;
        parser_state->pseudo_header->call_num[0] = '\0';
        parser_state->pseudo_header->chunk = 0;
        parser_state->pseudo_header->task = TASK;
    }
    parser_state->first_hexbyte = 0;
}

/*
ETHER3ND XMIT: (task "_sarTask" at 0x802c6eb0, time: 259848.11) 414 octets @ 0xa
885f80e
*/
ether_hdr ::= ether_prefix(TYPE) string KEYWORD string KEYWORD hexnum(TASK) KEYWORD decnum(SECS) decnum(USECS) decnum(WIRELEN) KEYWORD HEXNUM . {
    parser_state->wirelen += WIRELEN;
    parser_state->secs = SECS;
    parser_state->usecs = USECS;
    if (parser_state->pseudo_header != NULL) {
        parser_state->pseudo_header->type = TYPE;
        parser_state->pseudo_header->call_num[0] = '\0';
        parser_state->pseudo_header->chunk = 0;
        parser_state->pseudo_header->task = TASK;
    }
}

/* RECV-iguana:241:(task: B02614C0, time: 1975432.85) 49 octets @ 8003BD94 */
/*            1        2      3      4       5      6       7      8      9      10     11 */
wds_hdr ::= wds_prefix(TYPE) string decnum(SESS) KEYWORD hexnum(TASK) KEYWORD decnum(SECS) decnum(USECS) decnum(WIRELEN) KEYWORD HEXNUM . {
    parser_state->wirelen += WIRELEN;
    parser_state->secs = SECS;
    parser_state->usecs = USECS;
    if (parser_state->pseudo_header != NULL) {
        /* parser_state->pseudo_header->user is set in ascend_scanner.l */
        parser_state->pseudo_header->type = TYPE;
        parser_state->pseudo_header->sess = SESS;
        parser_state->pseudo_header->call_num[0] = '\0';
        parser_state->pseudo_header->chunk = 0;
        parser_state->pseudo_header->task = TASK;
    }
}

/* RECV-Max7:20: (task "_brouterControlTask" at 0xb094ac20, time: 1481.50) 20 octets @ 0x8000d198 */
/*                1       2       3     4       5       6      7       8      9      10     11     12      13 */
wds8_hdr ::= wds_prefix(TYPE) string decnum(SESS) KEYWORD string KEYWORD hexnum(TASK) KEYWORD decnum(SECS) decnum(USECS) decnum(WIRELEN) KEYWORD HEXNUM . {
    parser_state->wirelen += WIRELEN;
    parser_state->secs = SECS;
    parser_state->usecs = USECS;
    if (parser_state->pseudo_header != NULL) {
        /* parser_state->pseudo_header->user is set in ascend_scanner.l */
        parser_state->pseudo_header->type = TYPE;
        parser_state->pseudo_header->sess = SESS;
        parser_state->pseudo_header->call_num[0] = '\0';
        parser_state->pseudo_header->chunk = 0;
        parser_state->pseudo_header->task = TASK;
    }
}

/* RECV-187:(task: B050B480, time: 18042248.03) 100 octets @ 800012C0 */
/*            1        2       3      4       5       6      7      8      9      10    */
wdp7_hdr ::= wds_prefix(TYPE) decnum(SESS) KEYWORD hexnum(TASK) KEYWORD decnum(SECS) decnum(USECS) decnum(WIRELEN) KEYWORD HEXNUM . {
    parser_state->wirelen += WIRELEN;
    parser_state->secs = SECS;
    parser_state->usecs = USECS;
    if (parser_state->pseudo_header != NULL) {
        /* parser_state->pseudo_header->user is set in ascend_scanner.l */
        parser_state->pseudo_header->type = TYPE;
        parser_state->pseudo_header->sess = SESS;
        parser_state->pseudo_header->call_num[0] = '\0';
        parser_state->pseudo_header->chunk = 0;
        parser_state->pseudo_header->task = TASK;
    }
}

/* XMIT-44: (task "freedm_task" at 0xe051fd10, time: 6258.66) 29 octets @ 0x606d1f00 */
/*              1        2       3      4       5      6      7       8      9      10     11      12 */
wdp8_hdr ::= wds_prefix(TYPE) decnum(SESS) KEYWORD string KEYWORD hexnum(TASK) KEYWORD decnum(SECS) decnum(USECS) decnum(WIRELEN) KEYWORD HEXNUM . {
    parser_state->wirelen += WIRELEN;
    parser_state->secs = SECS;
    parser_state->usecs = USECS;
    if (parser_state->pseudo_header != NULL) {
        /* parser_state->pseudo_header->user is set in ascend_scanner.l */
        parser_state->pseudo_header->type = TYPE;
        parser_state->pseudo_header->sess = SESS;
        parser_state->pseudo_header->call_num[0] = '\0';
        parser_state->pseudo_header->chunk = 0;
        parser_state->pseudo_header->task = TASK;
    }
}

/*
Date: 01/12/1990.  Time: 12:22:33
Cause an attempt to place call to 14082750382
*/
/*           1        2      3      4      5       6      7      8      9      10*/
wdd_date ::= WDD_DATE wdd_decnum(MONTH) wdd_decnum(MDAY) wdd_decnum(YEAR) WDD_TIME wdd_decnum(HOUR) wdd_decnum(MINUTE) wdd_decnum(SECOND) WDD_CAUSE WDD_CALLNUM(CN_T) . {
    /*
    * Supply the date/time value to the code above us; it will use the
    * first date/time value supplied as the capture start date/time.
    */
    struct tm wddt;

    wddt.tm_sec  = SECOND;
    wddt.tm_min  = MINUTE;
    wddt.tm_hour = HOUR;
    wddt.tm_mday = MDAY;
    wddt.tm_mon  = MONTH - 1;
    wddt.tm_year = (YEAR > 1970) ? YEAR - 1900 : 70;
    wddt.tm_isdst = -1;

    parser_state->timestamp = (guint32) mktime(&wddt);
    parser_state->saw_timestamp = TRUE;

    (void) g_strlcpy(parser_state->pseudo_header->call_num, CN_T.str_val, ASCEND_MAX_STR_LEN);
}

/*
WD_DIALOUT_DISP: chunk 2515EE type IP.
(task: 251790, time: 994953.28) 44 octets @ 2782B8
*/
/*           1        2      3       4       5      6       7      8      9      10     11*/
wdd_hdr ::= WDD_CHUNK hexnum(CHUNK) KEYWORD KEYWORD hexnum(TASK) KEYWORD decnum(SECS) decnum(USECS) decnum(WIRELEN) KEYWORD HEXNUM . {
    parser_state->wirelen = WIRELEN;
    parser_state->secs = SECS;
    parser_state->usecs = USECS;
    if (parser_state->pseudo_header != NULL) {
        parser_state->pseudo_header->type = ASCEND_PFX_WDD;
        parser_state->pseudo_header->user[0] = '\0';
        parser_state->pseudo_header->sess = 0;
        parser_state->pseudo_header->chunk = CHUNK;
        parser_state->pseudo_header->task = TASK;
    }
}

byte ::= HEXBYTE(A_TOK) . {
    /* remember the position of the data group in the trace, to tip off
        ascend_find_next_packet() as to where to look for the next header. */
    if (parser_state->first_hexbyte == 0) {
        parser_state->first_hexbyte = file_tell(parser_state->fh) - A_TOK.length;
    }

    /* XXX - if this test fails, it means that we parsed more bytes than
        the header claimed there were. */
    if (parser_state->caplen < parser_state->wirelen) {
        parser_state->pkt_data[parser_state->caplen] = A_TOK.u8_val;
        parser_state->caplen++;
    }
}

/* XXX  There must be a better way to do this... */
bytegroup ::= byte byte byte byte byte byte byte byte byte byte byte byte byte byte byte byte .
bytegroup ::= byte byte byte byte byte byte byte byte byte byte byte byte byte byte byte .
bytegroup ::= byte byte byte byte byte byte byte byte byte byte byte byte byte byte .
bytegroup ::= byte byte byte byte byte byte byte byte byte byte byte byte byte .
bytegroup ::= byte byte byte byte byte byte byte byte byte byte byte byte .
bytegroup ::= byte byte byte byte byte byte byte byte byte byte byte .
bytegroup ::= byte byte byte byte byte byte byte byte byte byte .
bytegroup ::= byte byte byte byte byte byte byte byte byte .
bytegroup ::= byte byte byte byte byte byte byte byte .
bytegroup ::= byte byte byte byte byte byte byte .
bytegroup ::= byte byte byte byte byte byte .
bytegroup ::= byte byte byte byte byte .
bytegroup ::= byte byte byte byte .
bytegroup ::= byte byte byte .
bytegroup ::= byte byte .
bytegroup ::= byte .

dataln ::= COUNTER bytegroup .

datagroup ::= dataln dataln dataln dataln dataln dataln dataln dataln .
datagroup ::= dataln dataln dataln dataln dataln dataln dataln .
datagroup ::= dataln dataln dataln dataln dataln dataln .
datagroup ::= dataln dataln dataln dataln dataln .
datagroup ::= dataln dataln dataln dataln .
datagroup ::= dataln dataln dataln .
datagroup ::= dataln dataln .
datagroup ::= dataln .

%syntax_error
{
    /*
    * We might be parsing output that includes console session output along
    * with packet dumps.
    */
    (void)yypParser;
    (void)yyminor;
    static char *err = "non-packet data";

    parser_state->ascend_parse_error = err;
}

%code {

/* Run the parser. */
bool
run_ascend_parser(guint8 *pd, ascend_state_t *parser_state, int *err, gchar **err_info)
{
    yyscan_t scanner = NULL;
    void *parser;

    if (ascend_lex_init(&scanner) != 0) {
        /* errno is set if this fails */
        *err = errno;
        *err_info = NULL;
        return false;
    }
    /* Associate the parser state with the lexical analyzer state */
    ascend_set_extra(parser_state, scanner);
    parser_state->ascend_parse_error = NULL;
    parser_state->err = 0;
    parser_state->err_info = NULL;
    parser_state->pkt_data = pd;

    /*
    * We haven't seen a time stamp yet.
    */
    parser_state->saw_timestamp = FALSE;
    parser_state->timestamp = 0;

    parser_state->first_hexbyte = 0;
    parser_state->caplen = 0;
    parser_state->wirelen = 0;

    parser_state->secs = 0;
    parser_state->usecs = 0;

    /*
    * Not all packets in a "wdd" dump necessarily have a "Cause an
    * attempt to place call to" header (I presume this can happen if
    * there was a call in progress when the packet was sent or
    * received), so we won't necessarily have the phone number for
    * the packet.
    *
    * XXX - we could assume, in the sequential pass, that it's the
    * phone number from the last call, and remember that for use
    * when doing random access.
    */
    parser_state->pseudo_header->call_num[0] = '\0';

    parser = AscendParserAlloc(g_malloc);

#ifdef ASCEND_PARSER_DEBUG
    AscendParserTrace(stderr, "=AP ");
#endif

    int token_id;
    do {
        token_id = ascend_lex(scanner);

        ascend_debug("Got token %d at %" PRId64, token_id, file_tell(parser_state->fh));

        AscendParser(parser, token_id, parser_state->token, parser_state);
    } while (token_id && !parser_state->err && !parser_state->ascend_parse_error && parser_state->caplen < ASCEND_MAX_PKT_LEN);

    AscendParserFree(parser, g_free);
    ascend_lex_destroy(scanner);

    if (parser_state->err) {
        *err = parser_state->err;
        *err_info = parser_state->err_info;
        return false;
    }

    return true;
}

} // %code