6 * Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
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.
32 #include "file_wrappers.h"
35 #include "catapult_dct2000.h"
37 #define MAX_FIRST_LINE_LENGTH 200
38 #define MAX_TIMESTAMP_LINE_LENGTH 100
39 #define MAX_LINE_LENGTH 65536
40 #define MAX_TIMESTAMP_LEN 32
41 #define MAX_SECONDS_CHARS 16
42 #define MAX_SUBSECOND_DECIMALS 4
43 #define MAX_CONTEXT_NAME 64
44 #define MAX_PROTOCOL_NAME 64
45 #define MAX_PORT_DIGITS 2
46 #define MAX_VARIANT_DIGITS 32
47 #define MAX_OUTHDR_NAME 256
48 #define AAL_HEADER_CHARS 12
51 - support for FP over AAL0
52 - support for IuR interface FP
56 /* 's' or 'r' of a packet as read from .out file */
57 typedef enum packet_direction_t
64 /***********************************************************************/
65 /* For each line, store (in case we need to dump): */
66 /* - String before time field */
67 /* - String beween time field and data (if NULL assume " l ") */
75 /*******************************************************************/
76 /* Information stored external to a file (wtap) needed for reading and dumping */
77 typedef struct dct2000_file_externals
79 /* Remember the time at the start of capture */
84 * The following information is needed only for dumping.
86 * XXX - Wiretap is not *supposed* to require that a packet being
87 * dumped come from a file of the same type that you currently have
88 * open; this should be fixed.
91 /* Buffer to hold first line, including magic and format number */
92 gchar firstline[MAX_FIRST_LINE_LENGTH];
93 gint firstline_length;
95 /* Buffer to hold second line with formatted file creation data/time */
96 gchar secondline[MAX_TIMESTAMP_LINE_LENGTH];
97 gint secondline_length;
99 /* Hash table to store text prefix data part of displayed packets.
100 Records (file offset -> line_prefix_info_t)
102 GHashTable *packet_prefix_table;
103 } dct2000_file_externals_t;
105 /* 'Magic number' at start of Catapult DCT2000 .out files. */
106 static const gchar catapult_dct2000_magic[] = "Session Transcript";
108 /************************************************************/
109 /* Functions called from wiretap core */
110 static gboolean catapult_dct2000_read(wtap *wth, int *err, gchar **err_info,
111 gint64 *data_offset);
112 static gboolean catapult_dct2000_seek_read(wtap *wth, gint64 seek_off,
113 union wtap_pseudo_header *pseudo_header,
114 guint8 *pd, int length,
115 int *err, gchar **err_info);
116 static void catapult_dct2000_close(wtap *wth);
118 static gboolean catapult_dct2000_dump(wtap_dumper *wdh, const struct wtap_pkthdr *phdr,
119 const union wtap_pseudo_header *pseudo_header,
120 const guint8 *pd, int *err);
123 /************************************************************/
124 /* Private helper functions */
125 static gboolean read_new_line(FILE_T fh, gint64 *offset, gint *length,
126 gchar *buf, size_t bufsize);
127 static gboolean parse_line(char *linebuff, gint line_length,
128 gint *seconds, gint *useconds,
129 long *before_time_offset, long *after_time_offset,
132 packet_direction_t *direction,
133 int *encap, int *is_comment,
134 gchar *aal_header_chars,
135 gchar *context_name, guint8 *context_portp,
136 gchar *protocol_name, gchar *variant_name,
138 static int write_stub_header(guint8 *frame_buffer, char *timestamp_string,
139 packet_direction_t direction, int encap,
140 gchar *context_name, guint8 context_port,
141 gchar *protocol_name, gchar *variant_name,
143 static guint8 hex_from_char(gchar c);
144 static guint8 hex_byte_from_chars(gchar *c);
145 static gchar char_from_hex(guint8 hex);
147 static void set_pseudo_header_info(wtap *wth,
150 union wtap_pseudo_header *pseudo_header,
151 packet_direction_t direction,
152 gchar *aal_header_chars);
153 static void set_aal_info(union wtap_pseudo_header *pseudo_header,
154 packet_direction_t direction,
155 gchar *aal_header_chars);
156 static void set_isdn_info(union wtap_pseudo_header *pseudo_header,
157 packet_direction_t direction);
158 static void set_ppp_info(union wtap_pseudo_header *pseudo_header,
159 packet_direction_t direction);
161 static gint packet_offset_equal(gconstpointer v, gconstpointer v2);
162 static guint packet_offset_hash_func(gconstpointer v);
164 static gboolean get_file_time_stamp(gchar *linebuff, time_t *secs, guint32 *usecs);
165 static gboolean free_line_prefix_info(gpointer key, gpointer value, gpointer user_data);
169 /********************************************/
170 /* Open file (for reading) */
171 /********************************************/
172 int catapult_dct2000_open(wtap *wth, int *err, gchar **err_info _U_)
177 gint firstline_length = 0;
178 dct2000_file_externals_t *file_externals;
179 static gchar linebuff[MAX_LINE_LENGTH];
181 /* Clear errno before reading from the file */
185 /********************************************************************/
186 /* First line needs to contain at least as many characters as magic */
188 read_new_line(wth->fh, &offset, &firstline_length, linebuff,
190 if (((size_t)firstline_length < strlen(catapult_dct2000_magic)) ||
191 firstline_length >= MAX_FIRST_LINE_LENGTH) {
196 /* This file is not for us if it doesn't match our signature */
197 if (memcmp(catapult_dct2000_magic, linebuff, strlen(catapult_dct2000_magic)) != 0) {
202 /*********************************************************************/
203 /* Need entry in file_externals table */
205 /* Allocate a new file_externals structure for this file */
206 file_externals = g_malloc(sizeof(dct2000_file_externals_t));
207 memset((void*)file_externals, '\0', sizeof(dct2000_file_externals_t));
209 /* Copy this first line into buffer so could write out later */
210 g_strlcpy(file_externals->firstline, linebuff, firstline_length+1);
211 file_externals->firstline_length = firstline_length;
214 /***********************************************************/
215 /* Second line contains file timestamp */
216 /* Store this offset in in file_externals */
218 read_new_line(wth->fh, &offset, &(file_externals->secondline_length),
219 linebuff, sizeof linebuff);
220 if ((file_externals->secondline_length >= MAX_TIMESTAMP_LINE_LENGTH) ||
221 (!get_file_time_stamp(linebuff, ×tamp, &usecs))) {
223 /* Give up if file time line wasn't valid */
224 g_free(file_externals);
228 /* Fill in timestamp */
229 file_externals->start_secs = timestamp;
230 file_externals->start_usecs = usecs;
232 /* Copy this second line into buffer so could write out later */
233 g_strlcpy(file_externals->secondline, linebuff, file_externals->secondline_length+1);
236 /************************************************************/
237 /* File is for us. Fill in details so packets can be read */
239 /* Set our file type */
240 wth->file_type = WTAP_FILE_CATAPULT_DCT2000;
242 /* Use our own encapsulation to send all packets to our stub dissector */
243 wth->file_encap = WTAP_ENCAP_CATAPULT_DCT2000;
245 /* Callbacks for reading operations */
246 wth->subtype_read = catapult_dct2000_read;
247 wth->subtype_seek_read = catapult_dct2000_seek_read;
248 wth->subtype_close = catapult_dct2000_close;
250 /* Choose microseconds (have 4 decimal places...) */
251 wth->tsprecision = WTAP_FILE_TSPREC_USEC;
254 /***************************************************************/
255 /* Initialise packet_prefix_table (index is offset into file) */
256 file_externals->packet_prefix_table =
257 g_hash_table_new(packet_offset_hash_func, packet_offset_equal);
259 /* Set this wtap to point to the file_externals */
260 wth->priv = (void*)file_externals;
267 /**************************************************/
268 /* Read packet function. */
269 /* Look for and read the next usable packet */
270 /* - return TRUE and details if found */
271 /**************************************************/
272 gboolean catapult_dct2000_read(wtap *wth, int *err, gchar **err_info _U_,
275 gint64 offset = wth->data_offset;
276 long dollar_offset, before_time_offset, after_time_offset;
277 packet_direction_t direction;
280 /* Get wtap external structure for this wtap */
281 dct2000_file_externals_t *file_externals =
282 (dct2000_file_externals_t*)wth->priv;
284 /* There *has* to be an entry for this wth */
285 if (!file_externals) {
289 /* Search for a line containing a usable packet */
291 int line_length, seconds, useconds, data_chars;
292 int is_comment = FALSE;
293 gint64 this_offset = offset;
294 static gchar linebuff[MAX_LINE_LENGTH+1];
295 gchar aal_header_chars[AAL_HEADER_CHARS];
296 gchar context_name[MAX_CONTEXT_NAME];
298 gchar protocol_name[MAX_PROTOCOL_NAME+1];
299 gchar variant_name[MAX_VARIANT_DIGITS+1];
300 gchar outhdr_name[MAX_OUTHDR_NAME+1];
302 /* Are looking for first packet after 2nd line */
303 if (wth->data_offset == 0) {
304 this_offset += (file_externals->firstline_length+1+
305 file_externals->secondline_length+1);
308 /* Clear errno before reading from the file */
311 /* Read a new line from file into linebuff */
312 if (read_new_line(wth->fh, &offset, &line_length, linebuff,
313 sizeof linebuff) == FALSE) {
314 /* Get out if no more lines can be read */
318 /* Try to parse the line as a frame record */
319 if (parse_line(linebuff, line_length, &seconds, &useconds,
320 &before_time_offset, &after_time_offset,
322 &data_chars, &direction, &encap, &is_comment,
324 context_name, &context_port,
325 protocol_name, variant_name, outhdr_name)) {
326 guint8 *frame_buffer;
329 line_prefix_info_t *line_prefix_info;
330 char timestamp_string[MAX_TIMESTAMP_LEN+1];
333 g_snprintf(timestamp_string, MAX_TIMESTAMP_LEN, "%d.%04d", seconds, useconds/100);
335 /* All packets go to Catapult DCT2000 stub dissector */
336 wth->phdr.pkt_encap = WTAP_ENCAP_CATAPULT_DCT2000;
338 /* Set data_offset to the beginning of the line we're returning.
339 This will be the seek_off parameter when this frame is re-read.
341 *data_offset = this_offset;
343 /* This is the position in the file where the next _read() will be called from */
344 wth->data_offset = this_offset + line_length + 1;
346 /* Fill in timestamp (capture base + packet offset) */
347 wth->phdr.ts.secs = file_externals->start_secs + seconds;
348 if ((file_externals->start_usecs + useconds) >= 1000000) {
352 ((file_externals->start_usecs + useconds) % 1000000) *1000;
354 /* Get buffer pointer ready */
355 buffer_assure_space(wth->frame_buffer,
356 strlen(context_name)+1 + /* Context name */
358 strlen(timestamp_string)+1 + /* timestamp */
359 strlen(variant_name)+1 + /* variant */
360 strlen(outhdr_name)+1 + /* outhdr */
361 strlen(protocol_name)+1 + /* Protocol name */
364 (is_comment ? data_chars : (data_chars/2)));
365 frame_buffer = buffer_start_ptr(wth->frame_buffer);
368 /*********************/
369 /* Write stub header */
370 stub_offset = write_stub_header(frame_buffer, timestamp_string,
371 direction, encap, context_name,
373 protocol_name, variant_name,
376 /* Binary data length is half bytestring length + stub header */
377 wth->phdr.len = stub_offset + (is_comment ? data_chars : (data_chars/2));
378 wth->phdr.caplen = stub_offset + (is_comment ? data_chars : (data_chars/2));
382 /****************************************************/
383 /* Copy data into buffer, converting from ascii hex */
384 for (n=0; n <= data_chars; n+=2) {
385 frame_buffer[stub_offset + n/2] =
386 hex_byte_from_chars(linebuff+dollar_offset+n);
390 /***********************************************************/
391 /* Copy packet data into buffer, just copying ascii chars */
392 for (n=0; n <= data_chars; n++) {
393 frame_buffer[stub_offset + n] = linebuff[dollar_offset+n];
397 /* Store the packet prefix in the hash table */
398 line_prefix_info = g_malloc(sizeof(line_prefix_info_t));
400 /* Create and use buffer for contents before time */
401 line_prefix_info->before_time = g_malloc(before_time_offset+2);
402 g_strlcpy(line_prefix_info->before_time, linebuff, before_time_offset+1);
403 line_prefix_info->before_time[before_time_offset+1] = '\0';
405 /* Create and use buffer for contents before time.
406 Do this only if it doesn't correspond to " l ", which is by far the most
408 if (((size_t)(dollar_offset - after_time_offset -1) == strlen(" l ")) &&
409 (strncmp(linebuff+after_time_offset, " l ", strlen(" l ")) == 0)) {
411 line_prefix_info->after_time = NULL;
414 /* Allocate & write buffer for line between timestamp and data */
415 line_prefix_info->after_time = g_malloc(dollar_offset - after_time_offset);
416 g_strlcpy(line_prefix_info->after_time, linebuff+after_time_offset,
417 dollar_offset - after_time_offset);
418 line_prefix_info->after_time[dollar_offset - after_time_offset-1] = '\0';
421 /* Add packet entry into table */
422 pkey = g_malloc(sizeof(*pkey));
424 g_hash_table_insert(file_externals->packet_prefix_table, pkey, line_prefix_info);
426 /* Set pseudo-header if necessary */
427 set_pseudo_header_info(wth, encap, this_offset, &wth->pseudo_header,
428 direction, aal_header_chars);
430 /* OK, we have packet details to return */
436 /* No packet details to return... */
442 /**************************************************/
443 /* Read & seek function. */
444 /**************************************************/
446 catapult_dct2000_seek_read(wtap *wth, gint64 seek_off,
447 union wtap_pseudo_header *pseudo_header, guint8 *pd,
448 int length, int *err, gchar **err_info)
450 gint64 offset = wth->data_offset;
451 long dollar_offset, before_time_offset, after_time_offset;
452 static gchar linebuff[MAX_LINE_LENGTH+1];
453 gchar aal_header_chars[AAL_HEADER_CHARS];
454 gchar context_name[MAX_CONTEXT_NAME];
456 gchar protocol_name[MAX_PROTOCOL_NAME+1];
457 gchar variant_name[MAX_VARIANT_DIGITS+1];
458 gchar outhdr_name[MAX_OUTHDR_NAME+1];
459 int is_comment = FALSE;
460 packet_direction_t direction;
462 int seconds, useconds, data_chars;
467 /* Seek to beginning of packet */
468 if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1) {
472 /* Re-read whole line (this really should succeed) */
473 if (read_new_line(wth->random_fh, &offset, &length, linebuff,
474 sizeof linebuff) == FALSE) {
478 /* Try to parse this line again (should succeed as re-reading...) */
479 if (parse_line(linebuff, length, &seconds, &useconds,
480 &before_time_offset, &after_time_offset,
482 &data_chars, &direction, &encap, &is_comment,
484 context_name, &context_port,
485 protocol_name, variant_name, outhdr_name)) {
488 char timestamp_string[MAX_TIMESTAMP_LEN+1];
489 g_snprintf(timestamp_string, MAX_TIMESTAMP_LEN, "%d.%04d", seconds, useconds/100);
491 /* Make sure all packets go to catapult dct2000 dissector */
492 wth->phdr.pkt_encap = WTAP_ENCAP_CATAPULT_DCT2000;
495 /*********************/
496 /* Write stub header */
497 stub_offset = write_stub_header(pd, timestamp_string,
498 direction, encap, context_name,
500 protocol_name, variant_name,
505 /***********************************************************/
506 /* Copy packet data into buffer, converting from ascii hex */
507 for (n=0; n <= data_chars; n+=2) {
508 pd[stub_offset + n/2] = hex_byte_from_chars(linebuff+dollar_offset+n);
512 /***********************************************************/
513 /* Copy packet data into buffer, just copying ascii chars */
514 for (n=0; n <= data_chars; n++) {
515 pd[stub_offset+n] = linebuff[dollar_offset+n];
519 /* Set packet pseudo-header if necessary */
520 set_pseudo_header_info(wth, encap, seek_off, pseudo_header, direction,
527 /* If get here, must have failed */
529 *err_info = g_strdup_printf("catapult dct2000: seek_read failed to read/parse "
530 "line at position %" G_GINT64_MODIFIER "d",
536 /***************************************************************************/
537 /* Free dct2000-specific capture info from file that was open for reading */
538 /***************************************************************************/
539 void catapult_dct2000_close(wtap *wth)
541 /* Get externals for this file */
542 dct2000_file_externals_t *file_externals =
543 (dct2000_file_externals_t*)wth->priv;
545 /* The entry *has* to be found */
546 if (!file_externals) {
550 /* Free up its line prefix values */
551 g_hash_table_foreach_remove(file_externals->packet_prefix_table,
552 free_line_prefix_info, NULL);
553 /* Free up its line prefix table */
554 g_hash_table_destroy(file_externals->packet_prefix_table);
560 /***************************/
562 /***************************/
565 gboolean first_packet_written;
566 struct wtap_nstime start_time;
569 /*****************************************************/
570 /* The file that we are writing to has been opened. */
571 /* Set other dump callbacks. */
572 /*****************************************************/
573 gboolean catapult_dct2000_dump_open(wtap_dumper *wdh, int *err _U_)
575 /* Fill in other dump callbacks */
576 wdh->subtype_write = catapult_dct2000_dump;
581 /*********************************************************/
582 /* Respond to queries about which encap types we support */
584 /*********************************************************/
585 int catapult_dct2000_dump_can_write_encap(int encap)
588 case WTAP_ENCAP_CATAPULT_DCT2000:
589 /* We support this */
593 /* But don't write to any other formats... */
594 return WTAP_ERR_UNSUPPORTED_ENCAP;
599 /*****************************************/
600 /* Write a single packet out to the file */
601 /*****************************************/
603 gboolean catapult_dct2000_dump(wtap_dumper *wdh, const struct wtap_pkthdr *phdr,
604 const union wtap_pseudo_header *pseudo_header,
605 const guint8 *pd, int *err)
608 line_prefix_info_t *prefix = NULL;
609 gchar time_string[16];
611 dct2000_dump_t *dct2000;
613 /******************************************************/
614 /* Get the file_externals structure for this file */
615 /* Find wtap external structure for this wtap */
616 dct2000_file_externals_t *file_externals =
617 (dct2000_file_externals_t*)pseudo_header->dct2000.wth->priv;
619 dct2000 = (dct2000_dump_t *)wdh->priv;
620 if (dct2000 == NULL) {
622 /* Write out saved first line */
623 if (!wtap_dump_file_write(wdh, file_externals->firstline,
624 file_externals->firstline_length, err)) {
627 if (!wtap_dump_file_write(wdh, "\n", 1, err)) {
631 /* Also write out saved second line with timestamp corresponding to the
632 opening time of the log.
634 if (!wtap_dump_file_write(wdh, file_externals->secondline,
635 file_externals->secondline_length, err)) {
638 if (!wtap_dump_file_write(wdh, "\n", 1, err)) {
642 /* Allocate the dct2000-specific dump structure */
643 dct2000 = (dct2000_dump_t *)g_malloc(sizeof(dct2000_dump_t));
644 wdh->priv = (void *)dct2000;
646 /* Copy time of beginning of file */
647 dct2000->start_time.secs = file_externals->start_secs;
648 dct2000->start_time.nsecs =
649 (file_externals->start_usecs * 1000);
651 /* Set flag do don't write header out again */
652 dct2000->first_packet_written = TRUE;
656 /******************************************************************/
657 /* Write out this packet's prefix, including calculated timestamp */
659 /* Look up line data prefix using stored offset */
660 prefix = (line_prefix_info_t*)g_hash_table_lookup(file_externals->packet_prefix_table,
661 (const void*)&(pseudo_header->dct2000.seek_off));
663 /* Write out text before timestamp */
664 if (!wtap_dump_file_write(wdh, prefix->before_time,
665 strlen(prefix->before_time), err)) {
669 /* Can infer from prefix if this is a comment (whose payload is displayed differently) */
670 is_comment = (strstr(prefix->before_time, "/////") != NULL);
672 /* Calculate time of this packet to write, relative to start of dump */
673 if (phdr->ts.nsecs >= dct2000->start_time.nsecs) {
674 g_snprintf(time_string, 16, "%ld.%04d",
675 (long)(phdr->ts.secs - dct2000->start_time.secs),
676 (phdr->ts.nsecs - dct2000->start_time.nsecs) / 100000);
679 g_snprintf(time_string, 16, "%ld.%04u",
680 (long)(phdr->ts.secs - dct2000->start_time.secs-1),
681 ((1000000000 + (phdr->ts.nsecs / 100000)) - (dct2000->start_time.nsecs / 100000)) % 10000);
684 /* Write out the calculated timestamp */
685 if (!wtap_dump_file_write(wdh, time_string, strlen(time_string), err)) {
689 /* Write out text between timestamp and start of hex data */
690 if (prefix->after_time == NULL) {
691 if (!wtap_dump_file_write(wdh, " l ", strlen(" l "), err)) {
696 if (!wtap_dump_file_write(wdh, prefix->after_time,
697 strlen(prefix->after_time), err)) {
703 /****************************************************************/
704 /* Need to skip stub header at start of pd before we reach data */
707 for (n=0; pd[n] != '\0'; n++);
710 /* Context port number */
714 for (; pd[n] != '\0'; n++);
718 for (; pd[n] != '\0'; n++);
721 /* Variant number (as string) */
722 for (; pd[n] != '\0'; n++);
725 /* Outhdr (as string) */
726 for (; pd[n] != '\0'; n++);
729 /* Direction & encap */
733 /**************************************/
734 /* Remainder is encapsulated protocol */
735 if (!wtap_dump_file_write(wdh, "$", 1, err)) {
740 /* Each binary byte is written out as 2 hex string chars */
741 for (; n < phdr->len; n++) {
743 c[0] = char_from_hex((guint8)(pd[n] >> 4));
744 c[1] = char_from_hex((guint8)(pd[n] & 0x0f));
746 /* Write both hex chars of byte together */
747 if (!wtap_dump_file_write(wdh, c, 2, err)) {
753 for (; n < phdr->len; n++) {
757 /* Write both hex chars of byte together */
758 if (!wtap_dump_file_write(wdh, c, 1, err)) {
765 if (!wtap_dump_file_write(wdh, "\n", 1, err)) {
773 /****************************/
774 /* Private helper functions */
775 /****************************/
777 /**********************************************************************/
778 /* Read a new line from the file, starting at offset. */
779 /* - writes data to its argument linebuff */
780 /* - on return 'offset' will point to the next position to read from */
781 /* - return TRUE if this read is successful */
782 /**********************************************************************/
783 gboolean read_new_line(FILE_T fh, gint64 *offset, gint *length,
784 gchar *linebuff, size_t linebuffsize)
787 gint64 pos_before = file_tell(fh);
788 char *result = file_gets(linebuff, (int)linebuffsize - 1, fh);
789 if (result == NULL) {
790 /* No characters found, or error */
794 /* Set length (avoiding strlen()) and offset.. */
795 *length = (gint)(file_tell(fh) - pos_before);
796 *offset = *offset + *length;
798 /* ...but don't want to include newline in line length */
799 if (linebuff[*length-1] == '\n') {
800 linebuff[*length-1] = '\0';
801 *length = *length - 1;
808 /**********************************************************************/
809 /* Parse a line from buffer, by identifying: */
810 /* - context, port and direction of packet */
812 /* - data position and length */
813 /* Return TRUE if this packet looks valid and can be displayed */
814 /**********************************************************************/
815 static gboolean parse_line(gchar *linebuff, gint line_length,
816 gint *seconds, gint *useconds,
817 long *before_time_offset, long *after_time_offset,
818 long *data_offset, gint *data_chars,
819 packet_direction_t *direction,
820 int *encap, int *is_comment,
821 gchar *aal_header_chars,
822 gchar *context_name, guint8 *context_portp,
823 gchar *protocol_name, gchar *variant_name,
828 char port_number_string[MAX_PORT_DIGITS+1];
829 int variant_digits = 0;
831 int protocol_chars = 0;
832 int outhdr_chars = 0;
834 char seconds_buff[MAX_SECONDS_CHARS+1];
836 char subsecond_decimals_buff[MAX_SUBSECOND_DECIMALS+1];
837 int subsecond_decimals_chars;
838 int skip_first_byte = FALSE;
839 gboolean atm_header_present = FALSE;
843 /* Read context name until find '.' */
844 for (n=0; (linebuff[n] != '.') && (n < MAX_CONTEXT_NAME) && (n+1 < line_length); n++) {
845 if (linebuff[n] == '/') {
846 context_name[n] = '\0';
848 /* If not a comment (/////), not a valid line */
849 if (strncmp(linebuff+n, "/////", 5) != 0) {
853 /* There is no variant, outhdr, etc. Set protocol to be a comment */
854 g_snprintf(protocol_name, MAX_PROTOCOL_NAME, "comment");
858 if (!isalnum((guchar)linebuff[n]) && (linebuff[n] != '_') && (linebuff[n] != '-')) {
861 context_name[n] = linebuff[n];
863 if (n == MAX_CONTEXT_NAME || (n+1 >= line_length)) {
867 /* Reset strings (that won't be set by comments) */
868 variant_name[0] = '\0';
869 outhdr_name[0] = '\0';
870 port_number_string[0] = '\0';
872 if (!(*is_comment)) {
873 /* '.' must follow context name */
874 if (linebuff[n] != '.') {
877 context_name[n] = '\0';
881 /* Now read port number */
882 for (port_digits = 0;
883 (linebuff[n] != '/') && (port_digits <= MAX_PORT_DIGITS) && (n+1 < line_length);
884 n++, port_digits++) {
886 if (!isdigit((guchar)linebuff[n])) {
889 port_number_string[port_digits] = linebuff[n];
891 if (port_digits > MAX_PORT_DIGITS || (n+1 >= line_length)) {
895 /* Slash char must follow port number */
896 if (linebuff[n] != '/')
900 port_number_string[port_digits] = '\0';
901 *context_portp = atoi(port_number_string);
905 /* Now for the protocol name */
906 for (protocol_chars = 0;
907 (linebuff[n] != '/') && (protocol_chars < MAX_PROTOCOL_NAME) && (n < line_length);
908 n++, protocol_chars++) {
910 if (!isalnum((guchar)linebuff[n]) && linebuff[n] != '_') {
913 protocol_name[protocol_chars] = linebuff[n];
915 if (protocol_chars == MAX_PROTOCOL_NAME || n >= line_length) {
916 /* If doesn't fit, fail rather than truncate */
919 protocol_name[protocol_chars] = '\0';
921 /* Slash char must follow protocol name */
922 if (linebuff[n] != '/') {
929 /* Following the / is the variant number. No digits indicate 1 */
930 for (variant_digits = 0;
931 (isdigit((guchar)linebuff[n])) && (variant_digits <= MAX_VARIANT_DIGITS) && (n+1 < line_length);
932 n++, variant_digits++) {
934 if (!isdigit((guchar)linebuff[n])) {
937 variant_name[variant_digits] = linebuff[n];
939 if (variant_digits > MAX_VARIANT_DIGITS || (n+1 >= line_length)) {
942 if (variant_digits > 0) {
943 variant_name[variant_digits] = '\0';
944 variant = atoi(variant_name);
947 g_strlcpy(variant_name, "1", MAX_VARIANT_DIGITS+1);
951 /* Outheader values may follow */
952 outhdr_name[0] = '\0';
953 if (linebuff[n] == ',') {
957 for (outhdr_chars = 0;
958 (isdigit((guchar)linebuff[n]) || linebuff[n] == ',') &&
959 (outhdr_chars <= MAX_OUTHDR_NAME) && (n+1 < line_length);
960 n++, outhdr_chars++) {
962 if (!isdigit((guchar)linebuff[n]) && (linebuff[n] != ',')) {
965 outhdr_name[outhdr_chars] = linebuff[n];
967 if (outhdr_chars > MAX_OUTHDR_NAME || (n+1 >= line_length)) {
970 /* Terminate (possibly empty) string */
971 outhdr_name[outhdr_chars] = '\0';
976 /******************************************************************/
977 /* Now check whether we know how to use a packet of this protocol */
979 if ((strcmp(protocol_name, "ip") == 0) ||
980 (strcmp(protocol_name, "sctp") == 0) ||
981 (strcmp(protocol_name, "gre") == 0) ||
982 (strcmp(protocol_name, "mipv6") == 0) ||
983 (strcmp(protocol_name, "igmp") == 0)) {
985 *encap = WTAP_ENCAP_RAW_IP;
989 /* FP may be carried over ATM, which has separate atm header to parse */
990 if ((strcmp(protocol_name, "fp") == 0) ||
991 (strcmp(protocol_name, "fp_r4") == 0) ||
992 (strcmp(protocol_name, "fp_r5") == 0) ||
993 (strcmp(protocol_name, "fp_r6") == 0) ||
994 (strcmp(protocol_name, "fp_r7") == 0) ||
995 (strcmp(protocol_name, "fp_r8") == 0)) {
997 if ((variant > 256) && (variant % 256 == 3)) {
998 /* FP over udp is contained in IPPrim... */
1002 /* FP over AAL0 or AAL2 */
1003 *encap = WTAP_ENCAP_ATM_PDUS_UNTRUNCATED;
1004 atm_header_present = TRUE;
1007 else if (strcmp(protocol_name, "fpiur_r5") == 0) {
1008 /* FP (IuR) over AAL2 */
1009 *encap = WTAP_ENCAP_ATM_PDUS_UNTRUNCATED;
1010 atm_header_present = TRUE;
1014 if (strcmp(protocol_name, "ppp") == 0) {
1015 *encap = WTAP_ENCAP_PPP;
1018 if (strcmp(protocol_name, "isdn_l3") == 0) {
1019 /* TODO: find out what this byte means... */
1020 skip_first_byte = TRUE;
1021 *encap = WTAP_ENCAP_ISDN;
1024 if (strcmp(protocol_name, "isdn_l2") == 0) {
1025 *encap = WTAP_ENCAP_ISDN;
1028 if (strcmp(protocol_name, "ethernet") == 0) {
1029 *encap = WTAP_ENCAP_ETHERNET;
1032 if ((strcmp(protocol_name, "saalnni_sscop") == 0) ||
1033 (strcmp(protocol_name, "saaluni_sscop") == 0)) {
1035 *encap = DCT2000_ENCAP_SSCOP;
1038 if (strcmp(protocol_name, "frelay_l2") == 0) {
1039 *encap = WTAP_ENCAP_FRELAY;
1042 if (strcmp(protocol_name, "ss7_mtp2") == 0) {
1043 *encap = DCT2000_ENCAP_MTP2;
1046 if ((strcmp(protocol_name, "nbap") == 0) ||
1047 (strcmp(protocol_name, "nbap_r4") == 0) ||
1048 (strncmp(protocol_name, "nbap_sscfuni", strlen("nbap_sscfuni")) == 0)) {
1050 /* The entire message in these cases is nbap, so use an encap value. */
1051 *encap = DCT2000_ENCAP_NBAP;
1054 /* Not a supported board port protocol/encap, but can show as raw data or
1055 in some cases find protocol embedded inside primitive */
1056 *encap = DCT2000_ENCAP_UNHANDLED;
1060 /* Find separate ATM header if necessary */
1061 if (atm_header_present) {
1062 int header_chars_seen = 0;
1064 /* Scan ahead to the next $ */
1065 for (; (linebuff[n] != '$') && (n+1 < line_length); n++);
1068 if (n+1 >= line_length) {
1072 /* Read consecutive hex chars into atm header buffer */
1074 ((linebuff[n] >= '0') && (linebuff[n] <= '?') &&
1075 (n < line_length) &&
1076 (header_chars_seen < AAL_HEADER_CHARS));
1077 n++, header_chars_seen++) {
1079 aal_header_chars[header_chars_seen] = linebuff[n];
1080 /* Next 6 characters after '9' are mapped to a->f */
1081 if (!isdigit((guchar)linebuff[n])) {
1082 aal_header_chars[header_chars_seen] = 'a' + (linebuff[n] - '9') -1;
1086 if (header_chars_seen != AAL_HEADER_CHARS || n >= line_length) {
1094 /* If there is a number, skip all info to next '/'.
1095 TODO: for IP encapsulation, should store PDCP ueid, drb in pseudo info
1096 and display dct2000 dissector... */
1097 if (isdigit(linebuff[n])) {
1098 while ((n+1 < line_length) && linebuff[n] != '/') {
1104 while ((n+1 < line_length) && linebuff[n] == '/') {
1108 /* Skip a space that may happen here */
1109 if ((n+1 < line_length) && linebuff[n] == ' ') {
1113 /* Next character gives direction of message (must be 's' or 'r') */
1114 if (!(*is_comment)) {
1115 if (linebuff[n] == 's') {
1119 if (linebuff[n] == 'r') {
1120 *direction = received;
1133 /*********************************************************************/
1134 /* Find and read the timestamp */
1136 /* Now scan to the next digit, which should be the start of the timestamp */
1137 /* This will involve skipping " tm " */
1139 for (; ((linebuff[n] != 't') || (linebuff[n+1] != 'm')) && (n+1 < line_length); n++);
1140 if (n >= line_length) {
1144 for (; !isdigit((guchar)linebuff[n]) && (n < line_length); n++);
1145 if (n >= line_length) {
1149 *before_time_offset = n;
1152 for (seconds_chars = 0;
1153 (linebuff[n] != '.') &&
1154 (seconds_chars <= MAX_SECONDS_CHARS) &&
1156 n++, seconds_chars++) {
1158 if (!isdigit((guchar)linebuff[n])) {
1159 /* Found a non-digit before decimal point. Fail */
1162 seconds_buff[seconds_chars] = linebuff[n];
1164 if (seconds_chars > MAX_SECONDS_CHARS || n >= line_length) {
1165 /* Didn't fit in buffer. Fail rather than use truncated */
1169 /* Convert found value into number */
1170 seconds_buff[seconds_chars] = '\0';
1171 *seconds = atoi(seconds_buff);
1173 /* The decimal point must follow the last of the seconds digits */
1174 if (linebuff[n] != '.') {
1180 /* Subsecond decimal digits (expect 4-digit accuracy) */
1181 for (subsecond_decimals_chars = 0;
1182 (linebuff[n] != ' ') &&
1183 (subsecond_decimals_chars <= MAX_SUBSECOND_DECIMALS) &&
1185 n++, subsecond_decimals_chars++) {
1187 if (!isdigit((guchar)linebuff[n])) {
1190 subsecond_decimals_buff[subsecond_decimals_chars] = linebuff[n];
1192 if (subsecond_decimals_chars > MAX_SUBSECOND_DECIMALS || n >= line_length) {
1193 /* More numbers than expected - give up */
1196 /* Convert found value into microseconds */
1197 subsecond_decimals_buff[subsecond_decimals_chars] = '\0';
1198 *useconds = atoi(subsecond_decimals_buff) * 100;
1200 /* Space character must follow end of timestamp */
1201 if (linebuff[n] != ' ') {
1205 *after_time_offset = n;
1207 /* Now skip ahead to find start of data (marked by '$') */
1208 /* Want to avoid matching with normal sprint command output at the moment... */
1209 for (; (linebuff[n] != '$') && (linebuff[n] != '\'') && (n+1 < line_length); n++);
1210 if ((linebuff[n] == '\'') || (n+1 >= line_length)) {
1216 /* Set offset to data start within line */
1219 /* Set number of chars that comprise the hex string protocol data */
1220 *data_chars = line_length - n;
1222 /* May need to skip first byte (2 hex string chars) */
1223 if (skip_first_byte) {
1231 /*****************************************************************/
1232 /* Write the stub info to the data buffer while reading a packet */
1233 /*****************************************************************/
1234 static int write_stub_header(guint8 *frame_buffer, char *timestamp_string,
1235 packet_direction_t direction, int encap,
1236 gchar *context_name, guint8 context_port,
1237 gchar *protocol_name, gchar *variant_name,
1240 int stub_offset = 0;
1242 g_strlcpy((char*)frame_buffer, context_name, MAX_CONTEXT_NAME+1);
1243 stub_offset += (int)(strlen(context_name) + 1);
1245 /* Context port number */
1246 frame_buffer[stub_offset] = context_port;
1249 /* Timestamp within file */
1250 g_strlcpy((char*)&frame_buffer[stub_offset], timestamp_string, MAX_TIMESTAMP_LEN+1);
1251 stub_offset += (int)(strlen(timestamp_string) + 1);
1254 g_strlcpy((char*)&frame_buffer[stub_offset], protocol_name, MAX_PROTOCOL_NAME+1);
1255 stub_offset += (int)(strlen(protocol_name) + 1);
1257 /* Protocol variant number (as string) */
1258 g_strlcpy((void*)&frame_buffer[stub_offset], variant_name, MAX_VARIANT_DIGITS+1);
1259 stub_offset += (int)(strlen(variant_name) + 1);
1262 g_strlcpy((char*)&frame_buffer[stub_offset], outhdr_name, MAX_OUTHDR_NAME+1);
1263 stub_offset += (int)(strlen(outhdr_name) + 1);
1266 frame_buffer[stub_offset] = direction;
1270 frame_buffer[stub_offset] = (guint8)encap;
1277 /**************************************************************/
1278 /* Set pseudo-header info depending upon packet encapsulation */
1279 /**************************************************************/
1280 static void set_pseudo_header_info(wtap *wth,
1283 union wtap_pseudo_header *pseudo_header,
1284 packet_direction_t direction,
1285 gchar *aal_header_chars)
1287 pseudo_header->dct2000.seek_off = file_offset;
1288 pseudo_header->dct2000.wth = wth;
1290 switch (pkt_encap) {
1291 case WTAP_ENCAP_ATM_PDUS_UNTRUNCATED:
1292 set_aal_info(pseudo_header, direction, aal_header_chars);
1294 case WTAP_ENCAP_ISDN:
1295 set_isdn_info(pseudo_header, direction);
1297 case WTAP_ENCAP_PPP:
1298 set_ppp_info(pseudo_header, direction);
1302 /* Other supported types don't need to set anything here... */
1308 /*********************************************/
1309 /* Fill in atm pseudo-header with known info */
1310 /*********************************************/
1311 static void set_aal_info(union wtap_pseudo_header *pseudo_header,
1312 packet_direction_t direction,
1313 gchar *aal_header_chars)
1315 /* 'aal_head_chars' has this format (for AAL2 at least):
1316 Global Flow Control (4 bits) | VPI (8 bits) | VCI (16 bits) |
1317 Payload Type (4 bits) | Padding (3 bits?) | Link? (1 bit) |
1318 Channel Identifier (8 bits) | ...
1321 /* Indicate that this is a reassembled PDU */
1322 pseudo_header->dct2000.inner_pseudo_header.atm.flags = 0x00;
1324 /* Channel 0 is DTE->DCE, 1 is DCE->DTE. Always set 0 for now.
1325 TODO: Can we infer the correct value here?
1326 Meanwhile, just use the direction to make them distinguishable...
1328 pseudo_header->dct2000.inner_pseudo_header.atm.channel = (direction == received);
1330 /* Assume always AAL2 for FP */
1331 pseudo_header->dct2000.inner_pseudo_header.atm.aal = AAL_2;
1333 pseudo_header->dct2000.inner_pseudo_header.atm.type = TRAF_UMTS_FP;
1334 pseudo_header->dct2000.inner_pseudo_header.atm.subtype = TRAF_ST_UNKNOWN;
1336 /* vpi is 8 bits (2nd & 3rd nibble) */
1337 pseudo_header->dct2000.inner_pseudo_header.atm.vpi =
1338 hex_byte_from_chars(aal_header_chars+1);
1340 /* vci is next 16 bits */
1341 pseudo_header->dct2000.inner_pseudo_header.atm.vci =
1342 ((hex_from_char(aal_header_chars[3]) << 12) |
1343 (hex_from_char(aal_header_chars[4]) << 8) |
1344 (hex_from_char(aal_header_chars[5]) << 4) |
1345 hex_from_char(aal_header_chars[6]));
1347 /* 0 means we don't know how many cells the frame comprises. */
1348 pseudo_header->dct2000.inner_pseudo_header.atm.cells = 0;
1350 /* cid is usually last byte. Unless last char is not hex digit, in which
1351 case cid is derived from last char in ascii */
1352 if (isalnum((guchar)aal_header_chars[11])) {
1353 pseudo_header->dct2000.inner_pseudo_header.atm.aal2_cid =
1354 hex_byte_from_chars(aal_header_chars+10);
1357 pseudo_header->dct2000.inner_pseudo_header.atm.aal2_cid =
1358 (int)aal_header_chars[11] - '0';
1363 /**********************************************/
1364 /* Fill in isdn pseudo-header with known info */
1365 /**********************************************/
1366 void set_isdn_info(union wtap_pseudo_header *pseudo_header,
1367 packet_direction_t direction)
1369 /* This field is used to set the 'Source' and 'Destination' columns to
1370 'User' or 'Network'. If we assume that we're simulating the network,
1371 treat Received messages as being destined for the network.
1373 pseudo_header->dct2000.inner_pseudo_header.isdn.uton = (direction == received);
1375 /* This corresponds to the circuit ID. 0 is treated as LAPD,
1376 everything else would be treated as a B-channel
1378 pseudo_header->dct2000.inner_pseudo_header.isdn.channel = 0;
1382 /*********************************************/
1383 /* Fill in ppp pseudo-header with known info */
1384 /*********************************************/
1385 static void set_ppp_info(union wtap_pseudo_header *pseudo_header,
1386 packet_direction_t direction)
1388 /* Set direction. */
1389 pseudo_header->dct2000.inner_pseudo_header.p2p.sent = (direction == sent);
1393 /********************************************************/
1394 /* Return hex nibble equivalent of hex string character */
1395 /********************************************************/
1396 guint8 hex_from_char(gchar c)
1398 if ((c >= '0') && (c <= '9')) {
1402 if ((c >= 'a') && (c <= 'f')) {
1403 return 0x0a + (c - 'a');
1406 /* Not a valid hex string character */
1410 /* Extract and return a byte value from 2 ascii hex chars, starting from the given pointer */
1411 static guint8 hex_byte_from_chars(gchar *c)
1413 static guchar hex_char_array[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
1414 'a', 'b', 'c', 'd', 'e', 'f' };
1416 /* Populate lookup table first time */
1417 static guint8 tableValues[255][255];
1418 static gint tableSet = FALSE;
1421 for (i=0; i < 16; i++) {
1422 for (j=0; j < 16; j++) {
1423 tableValues[hex_char_array[i]][hex_char_array[j]] = i*16 + j;
1430 /* Return value from quick table lookup */
1431 return tableValues[(unsigned char)c[0]][(unsigned char)c[1]];
1436 /********************************************************/
1437 /* Return character corresponding to hex nibble value */
1438 /********************************************************/
1439 gchar char_from_hex(guint8 hex)
1441 static char hex_lookup[16] =
1442 { '0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
1448 return hex_lookup[hex];
1451 /***********************************************/
1452 /* Equality test for packet prefix hash tables */
1453 /***********************************************/
1454 gint packet_offset_equal(gconstpointer v, gconstpointer v2)
1456 /* Dereferenced pointers must have same gint64 offset value */
1457 return (*(const gint64*)v == *(const gint64*)v2);
1461 /********************************************/
1462 /* Hash function for packet-prefix hash table */
1463 /********************************************/
1464 guint packet_offset_hash_func(gconstpointer v)
1466 /* Use low-order bits of git64 offset value */
1467 return (guint)(*(const gint64*)v);
1471 /************************************************************************/
1472 /* Parse year, month, day, hour, minute, seconds out of formatted line. */
1473 /* Set secs and usecs as output */
1474 /* Return FALSE if no valid time can be read */
1475 /************************************************************************/
1476 gboolean get_file_time_stamp(gchar *linebuff, time_t *secs, guint32 *usecs)
1480 #define MAX_MONTH_LETTERS 9
1481 char month[MAX_MONTH_LETTERS+1];
1483 int day, year, hour, minute, second;
1486 /* If line longer than expected, file is probably not correctly formatted */
1487 if (strlen(linebuff) > MAX_TIMESTAMP_LINE_LENGTH) {
1491 /**************************************************************/
1492 /* First is month. Read until get a space following the month */
1493 for (n=0; (linebuff[n] != ' ') && (n < MAX_MONTH_LETTERS); n++) {
1494 month[n] = linebuff[n];
1498 if (strcmp(month, "January" ) == 0) tm.tm_mon = 0;
1499 else if (strcmp(month, "February" ) == 0) tm.tm_mon = 1;
1500 else if (strcmp(month, "March" ) == 0) tm.tm_mon = 2;
1501 else if (strcmp(month, "April" ) == 0) tm.tm_mon = 3;
1502 else if (strcmp(month, "May" ) == 0) tm.tm_mon = 4;
1503 else if (strcmp(month, "June" ) == 0) tm.tm_mon = 5;
1504 else if (strcmp(month, "July" ) == 0) tm.tm_mon = 6;
1505 else if (strcmp(month, "August" ) == 0) tm.tm_mon = 7;
1506 else if (strcmp(month, "September") == 0) tm.tm_mon = 8;
1507 else if (strcmp(month, "October" ) == 0) tm.tm_mon = 9;
1508 else if (strcmp(month, "November" ) == 0) tm.tm_mon = 10;
1509 else if (strcmp(month, "December" ) == 0) tm.tm_mon = 11;
1511 /* Give up if not found a properly-formatted date */
1514 /* Skip space char */
1517 /********************************************************/
1518 /* Scan for remaining numerical fields */
1519 scan_found = sscanf(linebuff+n, "%d, %d %d:%d:%d.%u",
1520 &day, &year, &hour, &minute, &second, usecs);
1521 if (scan_found != 6) {
1522 /* Give up if not all found */
1526 /******************************************************/
1527 /* Fill in remaining fields and return it in a time_t */
1528 tm.tm_year = year - 1900;
1533 tm.tm_isdst = -1; /* daylight saving time info not known */
1535 /* Get seconds from this time */
1536 *secs = mktime(&tm);
1538 /* Multiply 4 digits given to get micro-seconds */
1539 *usecs = *usecs * 100;
1544 /* Free the data allocated inside a line_prefix_info_t */
1545 gboolean free_line_prefix_info(gpointer key, gpointer value,
1546 gpointer user_data _U_)
1548 line_prefix_info_t *info = (line_prefix_info_t*)value;
1550 /* Free the 64-bit key value */
1553 /* Free the strings inside */
1554 g_free(info->before_time);
1555 if (info->after_time) {
1556 g_free(info->after_time);
1559 /* And the structure itself */
1562 /* Item will always be removed from table */