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 32000
40 #define MAX_SECONDS_CHARS 16
41 #define MAX_SUBSECOND_DECIMALS 4
42 #define MAX_CONTEXT_NAME 64
43 #define MAX_PROTOCOL_NAME 64
44 #define MAX_PORT_DIGITS 2
45 #define MAX_VARIANT_DIGITS 32
46 #define MAX_OUTHDR_NAME 256
47 #define AAL_HEADER_CHARS 12
50 - support for FP over AAL0
51 - support for IuR interface FP
55 /* 's' or 'r' of a packet as read from .out file */
56 typedef enum packet_direction_t
63 /***********************************************************************/
64 /* For each line, store (in case we need to dump): */
65 /* - String before time field */
66 /* - String beween time field and data (if NULL assume " l ") */
74 /*******************************************************************/
75 /* Information stored external to a file (wtap) needed for dumping */
76 typedef struct dct2000_file_externals
78 /* Buffer to hold first line, including magic and format number */
79 gchar firstline[MAX_FIRST_LINE_LENGTH];
80 gint firstline_length;
82 /* Buffer to hold second line with formatted file creation data/time */
83 gchar secondline[MAX_TIMESTAMP_LINE_LENGTH];
84 gint secondline_length;
86 /* Hash table to store text prefix data part of displayed packets.
87 Records (file offset -> line_prefix_info_t)
88 N.B. This is only needed for dumping
90 GHashTable *packet_prefix_table;
91 } dct2000_file_externals_t;
93 /* This global table maps wtap -> dct2000_file_externals_t structs */
94 static GHashTable *file_externals_table = NULL;
97 /***********************************************************/
98 /* Transient data used for parsing */
100 /* Buffer to hold a single text line read from the file */
101 static gchar linebuff[MAX_LINE_LENGTH];
103 /* Buffer for separate AAL header */
104 static gchar aal_header_chars[AAL_HEADER_CHARS];
106 /* 'Magic number' at start of Catapult DCT2000 .out files. */
107 static const gchar catapult_dct2000_magic[] = "Session Transcript";
109 /* Context name + port that the packet was captured at */
110 static gchar context_name[MAX_CONTEXT_NAME];
111 static guint8 context_port;
113 /* The DCT2000 protocol name of the packet, plus variant number */
114 static gchar protocol_name[MAX_PROTOCOL_NAME+1];
115 static gchar variant_name[MAX_VARIANT_DIGITS+1];
116 static gchar outhdr_name[MAX_OUTHDR_NAME+1];
119 /************************************************************/
120 /* Functions called from wiretap core */
121 static gboolean catapult_dct2000_read(wtap *wth, int *err, gchar **err_info,
122 gint64 *data_offset);
123 static gboolean catapult_dct2000_seek_read(wtap *wth, gint64 seek_off,
124 union wtap_pseudo_header *pseudo_header,
125 guchar *pd, int length,
126 int *err, gchar **err_info);
127 static void catapult_dct2000_close(wtap *wth);
129 static gboolean catapult_dct2000_dump(wtap_dumper *wdh, const struct wtap_pkthdr *phdr,
130 const union wtap_pseudo_header *pseudo_header,
131 const guchar *pd, int *err);
132 static gboolean catapult_dct2000_dump_close(wtap_dumper *wdh, int *err);
135 /************************************************************/
136 /* Private helper functions */
137 static gboolean read_new_line(FILE_T fh, gint64 *offset, gint *length);
138 static gboolean parse_line(gint line_length, gint *seconds, gint *useconds,
139 long *before_time_offset, long *after_time_offset,
142 packet_direction_t *direction,
144 static int write_stub_header(guchar *frame_buffer, char *timestamp_string,
145 packet_direction_t direction, int encap);
146 static guchar hex_from_char(gchar c);
147 static gchar char_from_hex(guchar hex);
149 static void set_pseudo_header_info(wtap *wth,
152 union wtap_pseudo_header *pseudo_header,
153 packet_direction_t direction);
154 static void set_aal_info(union wtap_pseudo_header *pseudo_header,
155 packet_direction_t direction);
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 wth_equal(gconstpointer v, gconstpointer v2);
162 static guint wth_hash_func(gconstpointer v);
163 static gint packet_offset_equal(gconstpointer v, gconstpointer v2);
164 static guint packet_offset_hash_func(gconstpointer v);
166 static gboolean get_file_time_stamp(time_t *secs, guint32 *usecs);
167 static gboolean free_line_prefix_info(gpointer key, gpointer value, gpointer user_data);
171 /********************************************/
172 /* Open file (for reading) */
173 /********************************************/
174 int catapult_dct2000_open(wtap *wth, int *err, gchar **err_info _U_)
179 gint firstline_length = 0;
180 dct2000_file_externals_t *file_externals;
182 /* Clear errno before reading from the file */
186 /********************************************************************/
187 /* First line needs to contain at least as many characters as magic */
189 read_new_line(wth->fh, &offset, &firstline_length);
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)
203 /*********************************************************************/
204 /* Need entry in file_externals table */
206 /* Create file externals table if it doesn't yet exist */
207 if (file_externals_table == NULL)
209 file_externals_table = g_hash_table_new(wth_hash_func, wth_equal);
212 /* Allocate a new file_externals structure for this file */
213 file_externals = g_malloc(sizeof(dct2000_file_externals_t));
214 memset((void*)file_externals, '\0', sizeof(dct2000_file_externals_t));
216 /* Copy this first line into buffer so could write out later */
217 strncpy(file_externals->firstline, linebuff, firstline_length);
218 file_externals->firstline_length = firstline_length;
221 /***********************************************************/
222 /* Second line contains file timestamp */
223 /* Store this offset in in wth->capture->catapult_dct2000 */
225 read_new_line(wth->fh, &offset, &(file_externals->secondline_length));
226 if ((file_externals->secondline_length >= MAX_TIMESTAMP_LINE_LENGTH) ||
227 (!get_file_time_stamp(×tamp, &usecs)))
229 /* Give up if file time line wasn't valid */
230 g_free(file_externals);
234 /* Allocate struct and fill in timestamp */
235 wth->capture.catapult_dct2000 = g_malloc(sizeof(catapult_dct2000_t));
236 wth->capture.catapult_dct2000->start_secs = timestamp;
237 wth->capture.catapult_dct2000->start_usecs = usecs;
239 /* Copy this second line into buffer so could write out later */
240 strncpy(file_externals->secondline, linebuff, file_externals->secondline_length);
243 /************************************************************/
244 /* File is for us. Fill in details so packets can be read */
246 /* Set our file type */
247 wth->file_type = WTAP_FILE_CATAPULT_DCT2000;
249 /* Use our own encapsulation to send all packets to our stub dissector */
250 wth->file_encap = WTAP_ENCAP_CATAPULT_DCT2000;
252 /* Callbacks for reading operations */
253 wth->subtype_read = catapult_dct2000_read;
254 wth->subtype_seek_read = catapult_dct2000_seek_read;
255 wth->subtype_close = catapult_dct2000_close;
257 /* Choose microseconds (have 4 decimal places...) */
258 wth->tsprecision = WTAP_FILE_TSPREC_USEC;
261 /***************************************************************/
262 /* Initialise packet_prefix_table (index is offset into file) */
263 file_externals->packet_prefix_table =
264 g_hash_table_new(packet_offset_hash_func, packet_offset_equal);
266 /* Add file_externals for this wtap into the global table */
267 g_hash_table_insert(file_externals_table,
268 (void*)wth, (void*)file_externals);
275 /**************************************************/
276 /* Read packet function. */
277 /* Look for and read the next usable packet */
278 /* - return TRUE and details if found */
279 /**************************************************/
280 gboolean catapult_dct2000_read(wtap *wth, int *err, gchar **err_info _U_,
283 gint64 offset = wth->data_offset;
284 long dollar_offset, before_time_offset, after_time_offset;
285 packet_direction_t direction;
288 /* Find wtap external structure for this wtap */
289 dct2000_file_externals_t *file_externals =
290 (dct2000_file_externals_t*)g_hash_table_lookup(file_externals_table, wth);
292 /* There *has* to be an entry for this wth */
298 /* Search for a line containing a usable packet */
301 int line_length, seconds, useconds, data_chars;
302 gint64 this_offset = offset;
304 /* Are looking for first packet after 2nd line */
305 if (wth->data_offset == 0)
307 this_offset += (file_externals->firstline_length+1+
308 file_externals->secondline_length+1);
311 /* Clear errno before reading from the file */
314 /* Read a new line from file into linebuff */
315 if (read_new_line(wth->fh, &offset, &line_length) == FALSE)
317 /* Get out if no more lines can be read */
321 /* Try to parse the line as a frame record */
322 if (parse_line(line_length, &seconds, &useconds,
323 &before_time_offset, &after_time_offset,
325 &data_chars, &direction, &encap))
327 guchar *frame_buffer;
330 line_prefix_info_t *line_prefix_info;
331 char timestamp_string[32];
334 g_snprintf(timestamp_string, 32, "%d.%04d", seconds, useconds/100);
336 /* All packets go to Catapult DCT2000 stub dissector */
337 wth->phdr.pkt_encap = WTAP_ENCAP_CATAPULT_DCT2000;
339 /* Set data_offset to the beginning of the line we're returning.
340 This will be the seek_off parameter when this frame is re-read.
342 *data_offset = this_offset;
344 /* This is the position in the file where the next _read() will be called from */
345 wth->data_offset = this_offset + line_length + 1;
347 /* Fill in timestamp (capture base + packet offset) */
348 wth->phdr.ts.secs = wth->capture.catapult_dct2000->start_secs + seconds;
349 if ((wth->capture.catapult_dct2000->start_usecs + useconds) >= 1000000)
354 ((wth->capture.catapult_dct2000->start_usecs + useconds) % 1000000) *1000;
356 /* Get buffer pointer ready */
357 buffer_assure_space(wth->frame_buffer,
358 strlen(context_name)+1 + /* Context name */
360 strlen(timestamp_string)+1 + /* timestamp */
361 strlen(variant_name)+1 + /* variant */
362 strlen(outhdr_name)+1 + /* outhdr */
363 strlen(protocol_name)+1 + /* Protocol name */
367 frame_buffer = buffer_start_ptr(wth->frame_buffer);
370 /*********************/
371 /* Write stub header */
372 stub_offset = write_stub_header(frame_buffer, timestamp_string,
375 /* Binary data length is half bytestring length + stub header */
376 wth->phdr.len = data_chars/2 + stub_offset;
377 wth->phdr.caplen = data_chars/2 + stub_offset;
380 /*************************/
381 /* Copy data into buffer */
382 for (n=0; n <= data_chars; n+=2)
384 frame_buffer[stub_offset + n/2] =
385 (hex_from_char(linebuff[dollar_offset+n]) << 4) |
386 hex_from_char(linebuff[dollar_offset+n+1]);
389 /* Store the packet prefix in the hash table */
390 line_prefix_info = g_malloc(sizeof(line_prefix_info_t));
392 /* Create and use buffer for contents before time */
393 line_prefix_info->before_time = g_malloc(before_time_offset+1);
394 strncpy(line_prefix_info->before_time, linebuff, before_time_offset);
395 line_prefix_info->before_time[before_time_offset] = '\0';
397 /* Create and use buffer for contents before time.
398 Do this only if it doesn't correspond to " l ", which is by far the most
400 if (((size_t)(dollar_offset - after_time_offset -1) == strlen(" l ")) &&
401 (strncmp(linebuff+after_time_offset, " l ", strlen(" l ")) == 0))
403 line_prefix_info->after_time = NULL;
407 /* Allocate & write buffer for line between timestamp and data */
408 line_prefix_info->after_time = g_malloc(dollar_offset - after_time_offset);
409 strncpy(line_prefix_info->after_time, linebuff+after_time_offset,
410 dollar_offset - after_time_offset);
411 line_prefix_info->after_time[dollar_offset - after_time_offset-1] = '\0';
414 /* Add packet entry into table */
415 pkey = g_malloc(sizeof(pkey));
417 g_hash_table_insert(file_externals->packet_prefix_table, pkey, line_prefix_info);
419 /* Set pseudo-header if necessary */
420 set_pseudo_header_info(wth, encap, this_offset, &wth->pseudo_header,
423 /* OK, we have packet details to return */
429 /* No packet details to return... */
435 /**************************************************/
436 /* Read & seek function. */
437 /**************************************************/
439 catapult_dct2000_seek_read(wtap *wth, gint64 seek_off,
440 union wtap_pseudo_header *pseudo_header, guchar *pd,
441 int length, int *err, gchar **err_info)
443 gint64 offset = wth->data_offset;
444 long dollar_offset, before_time_offset, after_time_offset;
445 packet_direction_t direction;
447 int seconds, useconds, data_chars;
452 /* Seek to beginning of packet */
453 if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
458 /* Re-read whole line (this really should succeed) */
459 if (read_new_line(wth->random_fh, &offset, &length) == FALSE)
464 /* Try to parse this line again (should succeed as re-reading...) */
465 if (parse_line(length, &seconds, &useconds,
466 &before_time_offset, &after_time_offset,
468 &data_chars, &direction, &encap))
472 char timestamp_string[32];
473 g_snprintf(timestamp_string, 32, "%d.%04d", seconds, useconds/100);
475 /* Make sure all packets go to catapult dct2000 dissector */
476 wth->phdr.pkt_encap = WTAP_ENCAP_CATAPULT_DCT2000;
479 /*********************/
480 /* Write stub header */
481 stub_offset = write_stub_header((guchar*)pd, timestamp_string,
485 /********************************/
486 /* Copy packet data into buffer */
487 for (n=0; n <= data_chars; n+=2)
489 pd[stub_offset + n/2] = (hex_from_char(linebuff[dollar_offset+n]) << 4) |
490 hex_from_char(linebuff[dollar_offset+n+1]);
493 /* Set packet pseudo-header if necessary */
494 set_pseudo_header_info(wth, encap, seek_off, pseudo_header, direction);
500 /* If get here, must have failed */
502 *err_info = g_strdup_printf("catapult dct2000: seek_read failed to read/parse "
503 "line at position %" G_GINT64_MODIFIER "d",
509 /***************************************************************************/
510 /* Free dct2000-specific capture info from file that was open for reading */
511 /***************************************************************************/
512 void catapult_dct2000_close(wtap *wth)
514 /* Look up externals for this file */
515 dct2000_file_externals_t *file_externals =
516 (dct2000_file_externals_t*)g_hash_table_lookup(file_externals_table, wth);
518 /* The entry *has* to be found */
524 /* Free up its line prefix values */
525 g_hash_table_foreach_remove(file_externals->packet_prefix_table,
526 free_line_prefix_info, NULL);
527 /* Free up its line prefix table */
528 g_hash_table_destroy(file_externals->packet_prefix_table);
530 /* And remove the externals entry from the global table */
531 g_hash_table_remove(file_externals_table, (void*)wth);
533 /* And free up file_externals itself */
534 g_free(file_externals);
536 /* Also free this capture info */
537 g_free(wth->capture.catapult_dct2000);
543 /***************************/
545 /***************************/
547 /*****************************************************/
548 /* The file that we are writing to has been opened. */
549 /* Set other dump callbacks. */
550 /*****************************************************/
551 gboolean catapult_dct2000_dump_open(wtap_dumper *wdh, gboolean cant_seek _U_, int *err _U_)
553 /* Fill in other dump callbacks */
554 wdh->subtype_write = catapult_dct2000_dump;
555 wdh->subtype_close = catapult_dct2000_dump_close;
560 /*********************************************************/
561 /* Respond to queries about which encap types we support */
563 /*********************************************************/
564 int catapult_dct2000_dump_can_write_encap(int encap)
568 case WTAP_ENCAP_CATAPULT_DCT2000:
569 /* We support this */
573 /* But don't write to any other formats... */
574 return WTAP_ERR_UNSUPPORTED_ENCAP;
579 /*****************************************/
580 /* Write a single packet out to the file */
581 /*****************************************/
583 static gboolean do_fwrite(const void *data, size_t size, size_t count, FILE *stream, int *err_p)
587 nwritten = fwrite(data, size, count, stream);
588 if (nwritten != count) {
589 if (nwritten == 0 && ferror(stream))
595 *err_p = WTAP_ERR_SHORT_WRITE;
603 gboolean catapult_dct2000_dump(wtap_dumper *wdh, const struct wtap_pkthdr *phdr,
604 const union wtap_pseudo_header *pseudo_header,
605 const guchar *pd, int *err)
608 line_prefix_info_t *prefix = NULL;
609 gchar time_string[16];
611 /******************************************************/
612 /* Look up the file_externals structure for this file */
613 /* Find wtap external structure for this wtap */
614 dct2000_file_externals_t *file_externals =
615 (dct2000_file_externals_t*)g_hash_table_lookup(file_externals_table,
616 pseudo_header->dct2000.wth);
618 if (wdh->dump.dct2000 == NULL)
620 /* Allocate the dct2000-specific dump structure */
621 wdh->dump.dct2000 = g_malloc(sizeof(catapult_dct2000_t));
623 /* Write out saved first line */
624 if (! do_fwrite(file_externals->firstline, 1, file_externals->firstline_length, wdh->fh, err))
628 if (! do_fwrite("\n", 1, 1, wdh->fh, err))
633 /* Also write out saved second line with timestamp corresponding to the
634 opening time of the log.
636 if (! do_fwrite(file_externals->secondline, 1, file_externals->secondline_length, wdh->fh, err))
640 if (! do_fwrite("\n", 1, 1, wdh->fh, err))
645 /* Allocate the dct2000-specific dump structure */
646 wdh->dump.dct2000 = g_malloc(sizeof(catapult_dct2000_t));
648 /* Copy time of beginning of file */
649 wdh->dump.dct2000->start_time.secs =
650 pseudo_header->dct2000.wth->capture.catapult_dct2000->start_secs;
651 wdh->dump.dct2000->start_time.nsecs =
652 (pseudo_header->dct2000.wth->capture.catapult_dct2000->start_usecs * 1000);
654 /* Set flag do don't write header out again */
655 wdh->dump.dct2000->first_packet_written = TRUE;
659 /******************************************************************/
660 /* Write out this packet's prefix, including calculated timestamp */
662 /* Look up line data prefix using stored offset */
663 prefix = (line_prefix_info_t*)g_hash_table_lookup(file_externals->packet_prefix_table,
664 (const void*)&(pseudo_header->dct2000.seek_off));
666 /* Write out text before timestamp */
667 if (! do_fwrite(prefix->before_time, 1, strlen(prefix->before_time), wdh->fh, err))
672 /* Calculate time of this packet to write, relative to start of dump */
673 if (phdr->ts.nsecs >= wdh->dump.dct2000->start_time.nsecs)
675 g_snprintf(time_string, 16, "%ld.%04d",
676 (long)(phdr->ts.secs - wdh->dump.dct2000->start_time.secs),
677 (phdr->ts.nsecs - wdh->dump.dct2000->start_time.nsecs) / 100000);
681 g_snprintf(time_string, 16, "%ld.%04u",
682 (long)(phdr->ts.secs - wdh->dump.dct2000->start_time.secs-1),
683 ((1000000000 + (phdr->ts.nsecs / 100000)) - (wdh->dump.dct2000->start_time.nsecs / 100000)) % 10000);
686 /* Write out the calculated timestamp */
687 if (! do_fwrite(time_string, 1, strlen(time_string), wdh->fh, err))
692 /* Write out text between timestamp and start of hex data */
693 if (prefix->after_time == NULL)
695 if (! do_fwrite(" l ", 1, strlen(" l "), wdh->fh, err))
702 if (! do_fwrite(prefix->after_time, 1, strlen(prefix->after_time), wdh->fh, err))
709 /****************************************************************/
710 /* Need to skip stub header at start of pd before we reach data */
713 for (n=0; pd[n] != '\0'; n++);
716 /* Context port number */
720 for (; pd[n] != '\0'; n++);
724 for (; pd[n] != '\0'; n++);
727 /* Variant number (as string) */
728 for (; pd[n] != '\0'; n++);
731 /* Outhdr (as string) */
732 for (; pd[n] != '\0'; n++);
735 /* Direction & encap */
739 /**************************************/
740 /* Remainder is encapsulated protocol */
741 if (! do_fwrite("$", 1, 1, wdh->fh, err))
746 /* Each binary byte is written out as 2 hex string chars */
747 for (; n < phdr->len; n++)
750 c[0] = char_from_hex((guchar)(pd[n] >> 4));
751 c[1] = char_from_hex((guchar)(pd[n] & 0x0f));
753 /* Write both hex chars of byte together */
754 if (! do_fwrite(c, 1, 2, wdh->fh, err))
761 if (! do_fwrite("\n", 1, 1, wdh->fh, err))
770 /******************************************************/
771 /* Close a file we've been writing to. */
772 /******************************************************/
773 static gboolean catapult_dct2000_dump_close(wtap_dumper *wdh _U_, int *err _U_)
781 /****************************/
782 /* Private helper functions */
783 /****************************/
785 /**********************************************************************/
786 /* Read a new line from the file, starting at offset. */
787 /* - writes data to static var linebuff */
788 /* - on return 'offset' will point to the next position to read from */
789 /* - return TRUE if this read is successful */
790 /**********************************************************************/
791 gboolean read_new_line(FILE_T fh, gint64 *offset, gint *length)
796 result = file_gets(linebuff, MAX_LINE_LENGTH, fh);
799 /* No characters found */
803 /* Set length and offset.. */
804 *length = strlen(linebuff);
805 *offset = *offset + *length;
807 /* ...but don't want to include newline in line length */
808 if (linebuff[*length-1] == '\n')
810 linebuff[*length-1] = '\0';
811 *length = *length - 1;
818 /**********************************************************************/
819 /* Parse a line from buffer, by identifying: */
820 /* - context, port and direction of packet */
822 /* - data position and length */
823 /* Return TRUE if this packet looks valid and can be displayed */
824 /**********************************************************************/
825 gboolean parse_line(gint line_length, gint *seconds, gint *useconds,
826 long *before_time_offset, long *after_time_offset,
827 long *data_offset, gint *data_chars,
828 packet_direction_t *direction,
833 char port_number_string[MAX_PORT_DIGITS+1];
834 int variant_digits = 0;
836 int protocol_chars = 0;
837 int outhdr_chars = 0;
839 char seconds_buff[MAX_SECONDS_CHARS+1];
841 char subsecond_decimals_buff[MAX_SUBSECOND_DECIMALS+1];
842 int subsecond_decimals_chars;
843 int skip_first_byte = FALSE;
845 gboolean atm_header_present = FALSE;
847 /* Read context name until find '.' */
848 for (n=0; linebuff[n] != '.' && (n < MAX_CONTEXT_NAME) && (n+1 < line_length); n++)
850 if (!isalnum((guchar)linebuff[n]) && (linebuff[n] != '_'))
854 context_name[n] = linebuff[n];
856 if (n == MAX_CONTEXT_NAME || (n+1 >= line_length))
861 /* '.' must follow context name */
862 if (linebuff[n] != '.')
866 context_name[n] = '\0';
871 /* Now read port number */
872 for (port_digits = 0;
873 (linebuff[n] != '/') && (port_digits <= MAX_PORT_DIGITS) && (n+1 < line_length);
876 if (!isdigit((guchar)linebuff[n]))
880 port_number_string[port_digits] = linebuff[n];
882 if (port_digits > MAX_PORT_DIGITS || (n+1 >= line_length))
887 /* Slash char must follow port number */
888 if (linebuff[n] != '/')
892 port_number_string[port_digits] = '\0';
893 context_port = atoi(port_number_string);
898 /* Now for the protocol name */
899 for (protocol_chars = 0;
900 (linebuff[n] != '/') && (protocol_chars < MAX_PROTOCOL_NAME) && (n < line_length);
901 n++, protocol_chars++)
903 if (!isalnum((guchar)linebuff[n]) && linebuff[n] != '_')
907 protocol_name[protocol_chars] = linebuff[n];
909 if (protocol_chars == MAX_PROTOCOL_NAME || n >= line_length)
911 /* If doesn't fit, fail rather than truncate */
914 protocol_name[protocol_chars] = '\0';
916 /* Slash char must follow protocol name */
917 if (linebuff[n] != '/')
925 /* Following the / is the variant number. No digits indicate 1 */
926 for (variant_digits = 0;
927 (isdigit((guchar)linebuff[n])) && (variant_digits <= MAX_VARIANT_DIGITS) && (n+1 < line_length);
928 n++, variant_digits++)
930 if (!isdigit((guchar)linebuff[n]))
934 variant_name[variant_digits] = linebuff[n];
936 if (variant_digits > MAX_VARIANT_DIGITS || (n+1 >= line_length))
940 if (variant_digits > 0)
942 variant_name[variant_digits] = '\0';
943 variant = atoi(variant_name);
947 strcpy(variant_name, "1");
951 /* Outheader values may follow */
952 outhdr_name[0] = '\0';
953 if (linebuff[n] == ',')
958 for (outhdr_chars = 0;
959 (isdigit((guchar)linebuff[n]) || linebuff[n] == ',') &&
960 (outhdr_chars <= MAX_OUTHDR_NAME) && (n+1 < line_length);
963 if (!isdigit((guchar)linebuff[n]) && (linebuff[n] != ','))
967 outhdr_name[outhdr_chars] = linebuff[n];
969 if (outhdr_chars > MAX_OUTHDR_NAME || (n+1 >= line_length))
973 /* Terminate (possibly empty) string */
974 outhdr_name[outhdr_chars] = '\0';
980 /******************************************************************/
981 /* Now check whether we know how to use a packet of this protocol */
983 if ((strcmp(protocol_name, "ip") == 0) ||
984 (strcmp(protocol_name, "sctp") == 0) ||
985 (strcmp(protocol_name, "gre") == 0) ||
986 (strcmp(protocol_name, "mipv6") == 0) ||
987 (strcmp(protocol_name, "igmp") == 0))
989 *encap = WTAP_ENCAP_RAW_IP;
993 /* FP may be carried over ATM, which has separate atm header to parse */
994 if ((strcmp(protocol_name, "fp") == 0) ||
995 (strcmp(protocol_name, "fp_r4") == 0) ||
996 (strcmp(protocol_name, "fp_r5") == 0) ||
997 (strcmp(protocol_name, "fp_r6") == 0))
999 if ((variant > 256) && (variant % 256 == 3))
1001 /* FP over udp is contained in IPPrim... */
1006 /* FP over AAL0 or AAL2 */
1007 *encap = WTAP_ENCAP_ATM_PDUS_UNTRUNCATED;
1008 atm_header_present = TRUE;
1011 else if (strcmp(protocol_name, "fpiur_r5") == 0)
1013 /* FP (IuR) over AAL2 */
1014 *encap = WTAP_ENCAP_ATM_PDUS_UNTRUNCATED;
1015 atm_header_present = TRUE;
1020 if (strcmp(protocol_name, "ppp") == 0)
1022 *encap = WTAP_ENCAP_PPP;
1025 if (strcmp(protocol_name, "isdn_l3") == 0)
1027 /* TODO: find out what this byte means... */
1028 skip_first_byte = TRUE;
1029 *encap = WTAP_ENCAP_ISDN;
1032 if (strcmp(protocol_name, "isdn_l2") == 0)
1034 *encap = WTAP_ENCAP_ISDN;
1037 if (strcmp(protocol_name, "ethernet") == 0)
1039 *encap = WTAP_ENCAP_ETHERNET;
1042 if ((strcmp(protocol_name, "saalnni_sscop") == 0) ||
1043 (strcmp(protocol_name, "saaluni_sscop") == 0))
1045 *encap = DCT2000_ENCAP_SSCOP;
1048 if (strcmp(protocol_name, "frelay_l2") == 0)
1050 *encap = WTAP_ENCAP_FRELAY;
1053 if (strcmp(protocol_name, "ss7_mtp2") == 0)
1055 *encap = DCT2000_ENCAP_MTP2;
1058 if ((strcmp(protocol_name, "nbap") == 0) ||
1059 (strcmp(protocol_name, "nbap_r4") == 0) ||
1060 (strncmp(protocol_name, "nbap_sscfuni", strlen("nbap_sscfuni")) == 0))
1062 /* The entire message in these cases is nbap, so use an encap value. */
1063 *encap = DCT2000_ENCAP_NBAP;
1067 /* Not a supported board port protocol/encap, but can show as raw data or
1068 in some cases find protocol embedded inside primitive */
1069 *encap = DCT2000_ENCAP_UNHANDLED;
1073 /* Find separate ATM header if necessary */
1074 if (atm_header_present)
1076 int header_chars_seen = 0;
1078 /* Scan ahead to the next $ */
1079 for (; (linebuff[n] != '$') && (n+1 < line_length); n++);
1082 if (n+1 >= line_length)
1087 /* Read consecutive hex chars into atm header buffer */
1089 ((linebuff[n] >= '0') && (linebuff[n] <= '?') &&
1090 (n < line_length) &&
1091 (header_chars_seen < AAL_HEADER_CHARS));
1092 n++, header_chars_seen++)
1094 aal_header_chars[header_chars_seen] = linebuff[n];
1095 /* Next 6 characters after '9' are mapped to a->f */
1096 if (!isdigit((guchar)linebuff[n]))
1098 aal_header_chars[header_chars_seen] = 'a' + (linebuff[n] - '9') -1;
1102 if (header_chars_seen != AAL_HEADER_CHARS || n >= line_length)
1109 /* Scan ahead to the next space */
1110 for (; (linebuff[n] != ' ') && (n+1 < line_length); n++);
1111 if (n+1 >= line_length)
1118 /* Next character gives direction of message (must be 's' or 'r') */
1119 if (linebuff[n] == 's')
1124 if (linebuff[n] == 'r')
1126 *direction = received;
1134 /*********************************************************************/
1135 /* Find and read the timestamp */
1137 /* Now scan to the next digit, which should be the start of the timestamp */
1138 for (; !isdigit((guchar)linebuff[n]) && (n < line_length); n++);
1139 if (n >= line_length)
1144 *before_time_offset = n;
1147 for (seconds_chars = 0;
1148 (linebuff[n] != '.') &&
1149 (seconds_chars <= MAX_SECONDS_CHARS) &&
1151 n++, seconds_chars++)
1153 if (!isdigit((guchar)linebuff[n]))
1155 /* Found a non-digit before decimal point. Fail */
1158 seconds_buff[seconds_chars] = linebuff[n];
1160 if (seconds_chars > MAX_SECONDS_CHARS || n >= line_length)
1162 /* Didn't fit in buffer. Fail rather than use truncated */
1166 /* Convert found value into number */
1167 seconds_buff[seconds_chars] = '\0';
1168 *seconds = atoi(seconds_buff);
1170 /* The decimal point must follow the last of the seconds digits */
1171 if (linebuff[n] != '.')
1178 /* Subsecond decimal digits (expect 4-digit accuracy) */
1179 for (subsecond_decimals_chars = 0;
1180 (linebuff[n] != ' ') &&
1181 (subsecond_decimals_chars <= MAX_SUBSECOND_DECIMALS) &&
1183 n++, subsecond_decimals_chars++)
1185 if (!isdigit((guchar)linebuff[n]))
1189 subsecond_decimals_buff[subsecond_decimals_chars] = linebuff[n];
1191 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] != ' ')
1206 *after_time_offset = n;
1208 /* Now skip ahead to find start of data (marked by '$') */
1209 for (; (linebuff[n] != '$') && (n+1 < line_length); n++);
1210 if (n+1 >= line_length)
1217 /* Set offset to data start within line */
1220 /* Set number of chars that comprise the hex string protocol data */
1221 *data_chars = line_length - n;
1223 /* May need to skip first byte (2 hex string chars) */
1224 if (skip_first_byte)
1234 /*****************************************************************/
1235 /* Write the stub info to the data buffer while reading a packet */
1236 /*****************************************************************/
1237 int write_stub_header(guchar *frame_buffer, char *timestamp_string,
1238 packet_direction_t direction, int encap)
1240 int stub_offset = 0;
1242 strcpy((char*)frame_buffer, context_name);
1243 stub_offset += (strlen(context_name) + 1);
1245 /* Context port number */
1246 frame_buffer[stub_offset] = context_port;
1249 /* Timestamp within file */
1250 strcpy((char*)&frame_buffer[stub_offset], timestamp_string);
1251 stub_offset += (strlen(timestamp_string) + 1);
1254 strcpy((char*)&frame_buffer[stub_offset], protocol_name);
1255 stub_offset += (strlen(protocol_name) + 1);
1257 /* Protocol variant number (as string) */
1258 strcpy((void*)&frame_buffer[stub_offset], variant_name);
1259 stub_offset += (strlen(variant_name) + 1);
1262 strcpy((char*)&frame_buffer[stub_offset], outhdr_name);
1263 stub_offset += (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 void set_pseudo_header_info(wtap *wth,
1283 union wtap_pseudo_header *pseudo_header,
1284 packet_direction_t direction)
1286 pseudo_header->dct2000.seek_off = file_offset;
1287 pseudo_header->dct2000.wth = wth;
1291 case WTAP_ENCAP_ATM_PDUS_UNTRUNCATED:
1292 set_aal_info(pseudo_header, direction);
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 void set_aal_info(union wtap_pseudo_header *pseudo_header, packet_direction_t direction)
1313 /* 'aal_head_chars' has this format (for AAL2 at least):
1314 Global Flow Control (4 bits) | VPI (8 bits) | VCI (16 bits) |
1315 Payload Type (4 bits) | Padding (3 bits?) | Link? (1 bit) |
1316 Channel Identifier (8 bits) | ...
1319 /* Indicate that this is a reassembled PDU */
1320 pseudo_header->dct2000.inner_pseudo_header.atm.flags = 0x00;
1322 /* Channel 0 is DTE->DCE, 1 is DCE->DTE. Always set 0 for now.
1323 TODO: Can we infer the correct value here?
1324 Meanwhile, just use the direction to make them distinguishable...
1326 pseudo_header->dct2000.inner_pseudo_header.atm.channel = (direction == received);
1328 /* Assume always AAL2 for FP */
1329 pseudo_header->dct2000.inner_pseudo_header.atm.aal = AAL_2;
1331 pseudo_header->dct2000.inner_pseudo_header.atm.type = TRAF_UMTS_FP;
1332 pseudo_header->dct2000.inner_pseudo_header.atm.subtype = TRAF_ST_UNKNOWN;
1334 /* vpi is 8 bits (2nd & 3rd nibble) */
1335 pseudo_header->dct2000.inner_pseudo_header.atm.vpi =
1336 ((hex_from_char(aal_header_chars[1]) << 4) |
1337 hex_from_char(aal_header_chars[2]));
1339 /* vci is next 16 bits */
1340 pseudo_header->dct2000.inner_pseudo_header.atm.vci =
1341 ((hex_from_char(aal_header_chars[3]) << 12) |
1342 (hex_from_char(aal_header_chars[4]) << 8) |
1343 (hex_from_char(aal_header_chars[5]) << 4) |
1344 hex_from_char(aal_header_chars[6]));
1346 /* 0 means we don't know how many cells the frame comprises. */
1347 pseudo_header->dct2000.inner_pseudo_header.atm.cells = 0;
1349 /* cid is usually last byte. Unless last char is not hex digit, in which
1350 case cid is derived from last char in ascii */
1351 if (isalnum((guchar)aal_header_chars[11]))
1353 pseudo_header->dct2000.inner_pseudo_header.atm.aal2_cid =
1354 ((hex_from_char(aal_header_chars[10]) << 4) |
1355 hex_from_char(aal_header_chars[11]));
1359 pseudo_header->dct2000.inner_pseudo_header.atm.aal2_cid =
1360 (int)aal_header_chars[11] - 48;
1366 /**********************************************/
1367 /* Fill in isdn pseudo-header with known info */
1368 /**********************************************/
1369 void set_isdn_info(union wtap_pseudo_header *pseudo_header,
1370 packet_direction_t direction)
1372 /* This field is used to set the 'Source' and 'Destination' columns to
1373 'User' or 'Network'. If we assume that we're simulating the network,
1374 treat Received messages as being destined for the network.
1376 pseudo_header->dct2000.inner_pseudo_header.isdn.uton = (direction == received);
1378 /* This corresponds to the circuit ID. 0 is treated as LAPD,
1379 everything else would be treated as a B-channel
1381 pseudo_header->dct2000.inner_pseudo_header.isdn.channel = 0;
1385 /*********************************************/
1386 /* Fill in ppp pseudo-header with known info */
1387 /*********************************************/
1388 static void set_ppp_info(union wtap_pseudo_header *pseudo_header,
1389 packet_direction_t direction)
1391 /* Set direction. */
1392 pseudo_header->dct2000.inner_pseudo_header.p2p.sent = (direction == sent);
1396 /********************************************************/
1397 /* Return hex nibble equivalent of hex string character */
1398 /********************************************************/
1399 guchar hex_from_char(gchar c)
1401 if ((c >= '0') && (c <= '9'))
1406 if ((c >= 'a') && (c <= 'f'))
1408 return 0x0a + (c - 'a');
1411 /* Not a valid hex string character */
1416 /********************************************************/
1417 /* Return character corresponding to hex nibble value */
1418 /********************************************************/
1419 gchar char_from_hex(guchar hex)
1421 static char hex_lookup[16] =
1422 { '0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
1429 return hex_lookup[hex];
1432 /***************************************************/
1433 /* Equality function for file_externals hash table */
1434 /***************************************************/
1435 gint wth_equal(gconstpointer v, gconstpointer v2)
1440 /***********************************************/
1441 /* Hash function for file_externals hash table */
1442 /***********************************************/
1443 guint wth_hash_func(gconstpointer v)
1445 return (guint)(unsigned long)v;
1449 /***********************************************/
1450 /* Equality test for packet prefix hash tables */
1451 /***********************************************/
1452 gint packet_offset_equal(gconstpointer v, gconstpointer v2)
1454 /* Dereferenced pointers must have same gint64 offset value */
1455 return (*(const gint64*)v == *(const gint64*)v2);
1459 /********************************************/
1460 /* Hash function for packet-prefix hash table */
1461 /********************************************/
1462 guint packet_offset_hash_func(gconstpointer v)
1464 /* Use low-order bits of git64 offset value */
1465 return (guint)(*(const gint64*)v);
1469 /************************************************************************/
1470 /* Parse year, month, day, hour, minute, seconds out of formatted line. */
1471 /* Set secs and usecs as output */
1472 /* Return FALSE if no valid time can be read */
1473 /************************************************************************/
1474 gboolean get_file_time_stamp(time_t *secs, guint32 *usecs)
1478 #define MAX_MONTH_LETTERS 9
1479 char month[MAX_MONTH_LETTERS+1];
1481 int day, year, hour, minute, second;
1484 /* If line longer than expected, file is probably not correctly formatted */
1485 if (strlen(linebuff) > MAX_TIMESTAMP_LINE_LENGTH)
1490 /**************************************************************/
1491 /* First is month. Read until get a space following the month */
1492 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;
1512 /* Give up if not found a properly-formatted date */
1515 /* Skip space char */
1518 /********************************************************/
1519 /* Scan for remaining numerical fields */
1520 scan_found = sscanf(linebuff+n, "%d, %d %d:%d:%d.%u",
1521 &day, &year, &hour, &minute, &second, usecs);
1522 if (scan_found != 6)
1524 /* Give up if not all found */
1528 /******************************************************/
1529 /* Fill in remaining fields and return it in a time_t */
1530 tm.tm_year = year - 1900;
1535 tm.tm_isdst = -1; /* daylight saving time info not known */
1537 /* Get seconds from this time */
1538 *secs = mktime(&tm);
1540 /* Multiply 4 digits given to get micro-seconds */
1541 *usecs = *usecs * 100;
1546 /* Free the data allocated inside a line_prefix_info_t */
1547 gboolean free_line_prefix_info(gpointer key, gpointer value,
1548 gpointer user_data _U_)
1550 line_prefix_info_t *info = (line_prefix_info_t*)value;
1552 /* Free the 64-bit key value */
1555 /* Free the strings inside */
1556 g_free(info->before_time);
1557 if (info->after_time)
1559 g_free(info->after_time);
1562 /* And the structure itself */
1565 /* Item will always be removed from table */