2 * Definitions for file structures and routines
6 * Wireshark - Network traffic analyzer
7 * By Gerald Combs <gerald@wireshark.org>
8 * Copyright 1998 Gerald Combs
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version 2
13 * of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
28 #include "wiretap/wtap.h"
31 #include <epan/epan.h>
33 #include "packet-range.h"
37 #endif /* __cplusplus */
39 /** Return values from functions that only can succeed or fail. */
41 CF_OK, /**< operation succeeded */
42 CF_ERROR /**< operation got an error (function may provide err with details) */
45 /** Return values from functions that read capture files. */
47 CF_READ_OK, /**< operation succeeded */
48 CF_READ_ERROR, /**< operation got an error (function may provide err with details) */
49 CF_READ_ABORTED /**< operation aborted by user */
52 /** Return values from functions that write out packets. */
54 CF_WRITE_OK, /**< operation succeeded */
55 CF_WRITE_ERROR, /**< operation got an error (function may provide err with details) */
56 CF_WRITE_ABORTED, /**< operation aborted by user */
59 /** Return values from functions that print sets of packets. */
61 CF_PRINT_OK, /**< print operation succeeded */
62 CF_PRINT_OPEN_ERROR, /**< print operation failed while opening printer */
63 CF_PRINT_WRITE_ERROR /**< print operation failed while writing to the printer */
70 cf_cb_file_read_started,
71 cf_cb_file_read_finished,
72 cf_cb_file_reload_started,
73 cf_cb_file_reload_finished,
74 cf_cb_file_rescan_started,
75 cf_cb_file_rescan_finished,
76 cf_cb_file_fast_save_finished,
77 cf_cb_packet_selected,
78 cf_cb_packet_unselected,
79 cf_cb_field_unselected,
80 cf_cb_file_save_started,
81 cf_cb_file_save_finished,
82 cf_cb_file_save_failed,
83 cf_cb_file_save_stopped,
84 cf_cb_file_export_specified_packets_started,
85 cf_cb_file_export_specified_packets_finished,
86 cf_cb_file_export_specified_packets_failed,
87 cf_cb_file_export_specified_packets_stopped
90 typedef void (*cf_callback_t) (gint event, gpointer data, gpointer user_data);
96 gboolean frame_matched;
101 cf_callback_add(cf_callback_t func, gpointer user_data);
104 cf_callback_remove(cf_callback_t func);
107 * Open a capture file.
109 * @param cf the capture file to be opened
110 * @param fname the filename to be opened
111 * @param is_tempfile is this a temporary file?
112 * @param err error code
113 * @return one of cf_status_t
115 cf_status_t cf_open(capture_file *cf, const char *fname, gboolean is_tempfile, int *err);
118 * Close a capture file.
120 * @param cf the capture file to be closed
122 void cf_close(capture_file *cf);
125 * Reload a capture file.
127 * @param cf the capture file to be reloaded
129 void cf_reload(capture_file *cf);
132 * Read all packets of a capture file into the internal structures.
134 * @param cf the capture file to be read
135 * @param from_save reread asked from cf_save_packets
136 * @return one of cf_read_status_t
138 cf_read_status_t cf_read(capture_file *cf, gboolean from_save);
141 * Read the pseudo-header and raw data for a packet. It will pop
142 * up an alert box if there's an error.
144 * @param cf the capture file from which to read the packet
145 * @param fdata the frame_data structure for the packet in question
146 * @param pseudo_header pointer to a wtap_pseudo_header union into
147 * which to read the packet's pseudo-header
148 * @param pd a guin8 array into which to read the packet's raw data
149 * @return TRUE if the read succeeded, FALSE if there was an error
151 gboolean cf_read_frame_r(capture_file *cf, frame_data *fdata,
152 struct wtap_pkthdr *phdr, guint8 *pd);
155 * Read the pseudo-header and raw data for a packet into a
156 * capture_file structure's pseudo_header and pd members.
157 * It will pop up an alert box if there's an error.
159 * @param cf the capture file from which to read the packet
160 * @param fdata the frame_data structure for the packet in question
161 * @return TRUE if the read succeeded, FALSE if there was an error
163 gboolean cf_read_frame(capture_file *cf, frame_data *fdata);
166 * Start reading from the end of a capture file.
167 * This is used in "Update list of packets in Real-Time".
169 * @param cf the capture file to be read from
170 * @param fname the filename to be read from
171 * @param is_tempfile is this a temporary file?
172 * @param err the error code, if an error had occured
173 * @return one of cf_status_t
175 cf_status_t cf_start_tail(capture_file *cf, const char *fname, gboolean is_tempfile, int *err);
178 * Read packets from the "end" of a capture file.
180 * @param cf the capture file to be read from
181 * @param to_read the number of packets to read
182 * @param err the error code, if an error had occured
183 * @return one of cf_read_status_t
185 cf_read_status_t cf_continue_tail(capture_file *cf, volatile int to_read, int *err);
188 * Fake reading packets from the "end" of a capture file.
190 * @param cf the capture file to be read from
192 void cf_fake_continue_tail(capture_file *cf);
195 * Finish reading from "end" of a capture file.
197 * @param cf the capture file to be read from
198 * @param err the error code, if an error had occured
199 * @return one of cf_read_status_t
201 cf_read_status_t cf_finish_tail(capture_file *cf, int *err);
204 * Determine whether this capture file (or a range of it) can be saved
205 * in any format using Wiretap rather than by copying the raw data.
207 * @param cf the capture file to check
208 * @return TRUE if it can be saved, FALSE if it can't
210 gboolean cf_can_write_with_wiretap(capture_file *cf);
213 * Save all packets in a capture file to a new file, and, if that succeeds,
214 * make that file the current capture file. If there's already a file with
215 * that name, do a "safe save", writing to a temporary file in the same
216 * directory and, if the write succeeds, renaming the new file on top of the
217 * old file, so that if the write fails, the old file is still intact.
219 * @param cf the capture file to save to
220 * @param fname the filename to save to
221 * @param save_format the format of the file to save (libpcap, ...)
222 * @param compressed whether to gzip compress the file
223 * @discard_comments TRUE if we should discard comments if the save
224 * succeeds (because we saved in a format that doesn't support
226 * @param dont_reopen TRUE if it shouldn't reopen and make that file the
227 * current capture file
228 * @return one of cf_write_status_t
230 cf_write_status_t cf_save_packets(capture_file * cf, const char *fname,
231 guint save_format, gboolean compressed,
232 gboolean discard_comments,
233 gboolean dont_reopen);
236 * Export some or all packets from a capture file to a new file. If there's
237 * already a file with that name, do a "safe save", writing to a temporary
238 * file in the same directory and, if the write succeeds, renaming the new
239 * file on top of the old file, so that if the write fails, the old file is
242 * @param cf the capture file to write to
243 * @param fname the filename to write to
244 * @param range the range of packets to write
245 * @param save_format the format of the file to write (libpcap, ...)
246 * @param compressed whether to gzip compress the file
247 * @return one of cf_write_status_t
249 cf_write_status_t cf_export_specified_packets(capture_file *cf,
251 packet_range_t *range,
253 gboolean compressed);
256 * Get a displayable name of the capture file.
258 * @param cf the capture file
259 * @return the displayable name (must be g_free'd)
261 gchar *cf_get_display_name(capture_file *cf);
264 * Set the source of the capture data for temporary files, e.g.
265 * "Interface eth0" or "Pipe from Pong"
267 * @param cf the capture file
268 * @param source the source description. this will be copied internally.
270 void cf_set_tempfile_source(capture_file *cf, gchar *source);
273 * Get the source of the capture data for temporary files. Guaranteed to
274 * return a non-null value. The returned value should not be freed.
276 * @param cf the capture file
278 const gchar *cf_get_tempfile_source(capture_file *cf);
281 * Get the number of packets in the capture file.
283 * @param cf the capture file
284 * @return the number of packets in the capture file
286 int cf_get_packet_count(capture_file *cf);
289 * Set the number of packets in the capture file.
291 * @param cf the capture file
292 * @param packet_count the number of packets in the capture file
294 void cf_set_packet_count(capture_file *cf, int packet_count);
297 * Is this capture file a temporary file?
299 * @param cf the capture file
300 * @return TRUE if it's a temporary file, FALSE otherwise
302 gboolean cf_is_tempfile(capture_file *cf);
305 * Set flag, that this file is a tempfile.
307 void cf_set_tempfile(capture_file *cf, gboolean is_tempfile);
310 * Set flag, if the number of packet drops while capturing are known or not.
312 * @param cf the capture file
313 * @param drops_known TRUE if the number of packet drops are known, FALSE otherwise
315 void cf_set_drops_known(capture_file *cf, gboolean drops_known);
318 * Set the number of packet drops while capturing.
320 * @param cf the capture file
321 * @param drops the number of packet drops occured while capturing
323 void cf_set_drops(capture_file *cf, guint32 drops);
326 * Get flag state, if the number of packet drops while capturing are known or not.
328 * @param cf the capture file
329 * @return TRUE if the number of packet drops are known, FALSE otherwise
331 gboolean cf_get_drops_known(capture_file *cf);
334 * Get the number of packet drops while capturing.
336 * @param cf the capture file
337 * @return the number of packet drops occured while capturing
339 guint32 cf_get_drops(capture_file *cf);
342 * Set the read filter.
343 * @todo this shouldn't be required, remove it somehow
345 * @param cf the capture file
346 * @param rfcode the readfilter
348 void cf_set_rfcode(capture_file *cf, dfilter_t *rfcode);
351 * "Display Filter" packets in the capture file.
353 * @param cf the capture file
354 * @param dfilter the display filter
355 * @param force TRUE if do in any case, FALSE only if dfilter changed
356 * @return one of cf_status_t
358 cf_status_t cf_filter_packets(capture_file *cf, gchar *dfilter, gboolean force);
361 * At least one "Refence Time" flag has changed, rescan all packets.
363 * @param cf the capture file
365 void cf_reftime_packets(capture_file *cf);
368 * Return the time it took to load the file
370 gulong cf_get_computed_elapsed(void);
373 * "Something" has changed, rescan all packets.
375 * @param cf the capture file
377 void cf_redissect_packets(capture_file *cf);
380 * Rescan all packets and just run taps - don't reconstruct the display.
382 * @param cf the capture file
383 * @return one of cf_read_status_t
385 cf_read_status_t cf_retap_packets(capture_file *cf);
388 * Adjust timestamp precision if auto is selected.
390 * @param cf the capture file
392 void cf_timestamp_auto_precision(capture_file *cf);
395 * Print the capture file.
397 * @param cf the capture file
398 * @param print_args the arguments what and how to print
399 * @return one of cf_print_status_t
401 cf_print_status_t cf_print_packets(capture_file *cf, print_args_t *print_args);
404 * Print (export) the capture file into PDML format.
406 * @param cf the capture file
407 * @param print_args the arguments what and how to export
408 * @return one of cf_print_status_t
410 cf_print_status_t cf_write_pdml_packets(capture_file *cf, print_args_t *print_args);
413 * Print (export) the capture file into PSML format.
415 * @param cf the capture file
416 * @param print_args the arguments what and how to export
417 * @return one of cf_print_status_t
419 cf_print_status_t cf_write_psml_packets(capture_file *cf, print_args_t *print_args);
422 * Print (export) the capture file into CSV format.
424 * @param cf the capture file
425 * @param print_args the arguments what and how to export
426 * @return one of cf_print_status_t
428 cf_print_status_t cf_write_csv_packets(capture_file *cf, print_args_t *print_args);
431 * Print (export) the capture file into C Arrays format.
433 * @param cf the capture file
434 * @param print_args the arguments what and how to export
435 * @return one of cf_print_status_t
437 cf_print_status_t cf_write_carrays_packets(capture_file *cf, print_args_t *print_args);
440 * Find packet with a protocol tree item that contains a specified text string.
442 * @param cf the capture file
443 * @param string the string to find
444 * @param dir direction in which to search
445 * @return TRUE if a packet was found, FALSE otherwise
447 gboolean cf_find_packet_protocol_tree(capture_file *cf, const char *string,
448 search_direction dir);
451 * Find field with a label that contains text string cfile->sfilter.
453 * @param cf the capture file
454 * @param tree the protocol tree
455 * @param mdata the first field (mdata->finfo) that matched the string
456 * @return TRUE if a packet was found, FALSE otherwise
458 extern gboolean cf_find_string_protocol_tree(capture_file *cf, proto_tree *tree,
462 * Find packet whose summary line contains a specified text string.
464 * @param cf the capture file
465 * @param string the string to find
466 * @param dir direction in which to search
467 * @return TRUE if a packet was found, FALSE otherwise
469 gboolean cf_find_packet_summary_line(capture_file *cf, const char *string,
470 search_direction dir);
473 * Find packet whose data contains a specified byte string.
475 * @param cf the capture file
476 * @param string the string to find
477 * @param string_size the size of the string to find
478 * @param dir direction in which to search
479 * @return TRUE if a packet was found, FALSE otherwise
481 gboolean cf_find_packet_data(capture_file *cf, const guint8 *string,
482 size_t string_size, search_direction dir);
485 * Find packet that matches a compiled display filter.
487 * @param cf the capture file
488 * @param sfcode the display filter to match
489 * @param dir direction in which to search
490 * @return TRUE if a packet was found, FALSE otherwise
492 gboolean cf_find_packet_dfilter(capture_file *cf, dfilter_t *sfcode,
493 search_direction dir);
496 * Find packet that matches a display filter given as a text string.
498 * @param cf the capture file
499 * @param filter the display filter to match
500 * @param dir direction in which to search
501 * @return TRUE if a packet was found, FALSE otherwise
504 cf_find_packet_dfilter_string(capture_file *cf, const char *filter,
505 search_direction dir);
508 * Find marked packet.
510 * @param cf the capture file
511 * @param dir direction in which to search
512 * @return TRUE if a packet was found, FALSE otherwise
514 gboolean cf_find_packet_marked(capture_file *cf, search_direction dir);
517 * Find time-reference packet.
519 * @param cf the capture file
520 * @param dir direction in which to search
521 * @return TRUE if a packet was found, FALSE otherwise
523 gboolean cf_find_packet_time_reference(capture_file *cf, search_direction dir);
526 * GoTo Packet in first row.
528 * @return TRUE if the first row exists, FALSE otherwise
530 gboolean cf_goto_top_frame(void);
533 * GoTo Packet in last row.
535 * @return TRUE if last row exists, FALSE otherwise
537 gboolean cf_goto_bottom_frame(void);
540 * GoTo Packet with the given row.
542 * @param cf the capture file
543 * @param row the row to go to
544 * @return TRUE if this row exists, FALSE otherwise
546 gboolean cf_goto_frame(capture_file *cf, guint row);
549 * Go to frame specified by currently selected protocol tree field.
550 * (Go To Corresponding Packet)
551 * @todo this is ugly and should be improved!
553 * @param cf the capture file
554 * @return TRUE if this packet exists, FALSE otherwise
556 gboolean cf_goto_framenum(capture_file *cf);
559 * Select the packet in the given row.
561 * @param cf the capture file
562 * @param row the row to select
564 void cf_select_packet(capture_file *cf, int row);
567 * Unselect all packets, if any.
569 * @param cf the capture file
571 void cf_unselect_packet(capture_file *cf);
574 * Unselect all protocol tree fields, if any.
576 * @param cf the capture file
578 void cf_unselect_field(capture_file *cf);
581 * Mark a particular frame in a particular capture.
583 * @param cf the capture file
584 * @param frame the frame to be marked
586 void cf_mark_frame(capture_file *cf, frame_data *frame);
589 * Unmark a particular frame in a particular capture.
591 * @param cf the capture file
592 * @param frame the frame to be unmarked
594 void cf_unmark_frame(capture_file *cf, frame_data *frame);
597 * Ignore a particular frame in a particular capture.
599 * @param cf the capture file
600 * @param frame the frame to be ignored
602 void cf_ignore_frame(capture_file *cf, frame_data *frame);
605 * Unignore a particular frame in a particular capture.
607 * @param cf the capture file
608 * @param frame the frame to be unignored
610 void cf_unignore_frame(capture_file *cf, frame_data *frame);
613 * Merge two (or more) capture files into one.
614 * @todo is this the right place for this function? It doesn't have to do a lot with capture_file.
616 * @param out_filename pointer to output filename; if output filename is
617 * NULL, a temporary file name is generated and *out_filename is set
618 * to point to the generated file name
619 * @param in_file_count the number of input files to merge
620 * @param in_filenames array of input filenames
621 * @param file_type the output filetype
622 * @param do_append FALSE to merge chronologically, TRUE simply append
623 * @return one of cf_status_t
626 cf_merge_files(char **out_filename, int in_file_count,
627 char *const *in_filenames, int file_type, gboolean do_append);
631 * Get the comment on a capture from the SHB data block
633 * @param cf the capture file
635 const gchar* cf_read_shb_comment(capture_file *cf);
638 * Update(replace) the comment on a capture from the SHB data block
640 * @param cf the capture file
641 * @param comment the string replacing the old comment
643 void cf_update_capture_comment(capture_file *cf, gchar *comment);
646 * Update(replace) the comment on a capture from a frame
648 * @param cf the capture file
649 * @param fdata the frame_data structure for the frame
650 * @param comment the string replacing the old comment
652 void cf_update_packet_comment(capture_file *cf, frame_data *fdata, gchar *comment);
655 * Does this capture file have any comments?
657 * @param cf the capture file
658 * @return TRUE if it does, FALSE if it doesn't
660 gboolean cf_has_comments(capture_file *cf);
662 #if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
663 void read_keytab_file(const char *);
668 #endif /* __cplusplus */