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.
44 #include <epan/epan.h>
45 #include <epan/filesystem.h>
48 #include "color_filters.h"
50 #include <epan/column.h>
51 #include <epan/packet.h>
52 #include <epan/column-utils.h>
53 #include "packet-range.h"
60 #include <epan/prefs.h>
61 #include <epan/dfilter/dfilter.h>
62 #include <epan/epan_dissect.h>
64 #include <epan/dissectors/packet-data.h>
65 #include <epan/dissectors/packet-ber.h>
66 #include <epan/timestamp.h>
67 #include <epan/dfilter/dfilter-macro.h>
68 #include <wsutil/file_util.h>
69 #include <epan/strutil.h>
70 #include <epan/addr_resolv.h>
72 #include "ui/alert_box.h"
73 #include "ui/simple_dialog.h"
74 #include "ui/main_statusbar.h"
75 #include "ui/progress_dlg.h"
76 #include "ui/ui_util.h"
79 gboolean auto_scroll_live;
82 static guint32 cum_bytes;
83 static nstime_t first_ts;
84 static frame_data *prev_dis;
85 static frame_data *prev_cap;
87 static gulong computed_elapsed;
89 static void cf_reset_state(capture_file *cf);
91 static int read_packet(capture_file *cf, dfilter_t *dfcode,
92 gboolean filtering_tap_listeners, guint tap_flags, gint64 offset);
94 static void rescan_packets(capture_file *cf, const char *action, const char *action_item,
95 gboolean refilter, gboolean redissect);
102 static match_result match_protocol_tree(capture_file *cf, frame_data *fdata,
104 static void match_subtree_text(proto_node *node, gpointer data);
105 static match_result match_summary_line(capture_file *cf, frame_data *fdata,
107 static match_result match_ascii_and_unicode(capture_file *cf, frame_data *fdata,
109 static match_result match_ascii(capture_file *cf, frame_data *fdata,
111 static match_result match_unicode(capture_file *cf, frame_data *fdata,
113 static match_result match_binary(capture_file *cf, frame_data *fdata,
115 static match_result match_dfilter(capture_file *cf, frame_data *fdata,
117 static match_result match_marked(capture_file *cf, frame_data *fdata,
119 static match_result match_time_reference(capture_file *cf, frame_data *fdata,
121 static gboolean find_packet(capture_file *cf,
122 match_result (*match_function)(capture_file *, frame_data *, void *),
123 void *criterion, search_direction dir);
125 static void cf_open_failure_alert_box(const char *filename, int err,
126 gchar *err_info, gboolean for_writing,
128 static void cf_rename_failure_alert_box(const char *filename, int err);
129 static void cf_close_failure_alert_box(const char *filename, int err);
130 static void ref_time_packets(capture_file *cf);
131 /* Update the progress bar this many times when reading a file. */
132 #define N_PROGBAR_UPDATES 100
133 /* We read around 200k/100ms don't update the progress bar more often than that */
134 #define MIN_QUANTUM 200000
135 #define MIN_NUMBER_OF_PACKET 1500
138 * We could probably use g_signal_...() instead of the callbacks below but that
139 * would require linking our CLI programs to libgobject and creating an object
140 * instance for the signals.
143 cf_callback_t cb_fct;
145 } cf_callback_data_t;
147 static GList *cf_callbacks = NULL;
150 cf_callback_invoke(int event, gpointer data)
152 cf_callback_data_t *cb;
153 GList *cb_item = cf_callbacks;
155 /* there should be at least one interested */
156 g_assert(cb_item != NULL);
158 while (cb_item != NULL) {
160 cb->cb_fct(event, data, cb->user_data);
161 cb_item = g_list_next(cb_item);
167 cf_callback_add(cf_callback_t func, gpointer user_data)
169 cf_callback_data_t *cb;
171 cb = g_malloc(sizeof(cf_callback_data_t));
173 cb->user_data = user_data;
175 cf_callbacks = g_list_append(cf_callbacks, cb);
179 cf_callback_remove(cf_callback_t func)
181 cf_callback_data_t *cb;
182 GList *cb_item = cf_callbacks;
184 while (cb_item != NULL) {
186 if (cb->cb_fct == func) {
187 cf_callbacks = g_list_remove(cf_callbacks, cb);
191 cb_item = g_list_next(cb_item);
194 g_assert_not_reached();
198 cf_timestamp_auto_precision(capture_file *cf)
201 int prec = timestamp_get_precision();
204 /* don't try to get the file's precision if none is opened */
205 if (cf->state == FILE_CLOSED) {
209 /* if we are in auto mode, set precision of current file */
210 if (prec == TS_PREC_AUTO ||
211 prec == TS_PREC_AUTO_SEC ||
212 prec == TS_PREC_AUTO_DSEC ||
213 prec == TS_PREC_AUTO_CSEC ||
214 prec == TS_PREC_AUTO_MSEC ||
215 prec == TS_PREC_AUTO_USEC ||
216 prec == TS_PREC_AUTO_NSEC)
218 switch(wtap_file_tsprecision(cf->wth)) {
219 case(WTAP_FILE_TSPREC_SEC):
220 timestamp_set_precision(TS_PREC_AUTO_SEC);
222 case(WTAP_FILE_TSPREC_DSEC):
223 timestamp_set_precision(TS_PREC_AUTO_DSEC);
225 case(WTAP_FILE_TSPREC_CSEC):
226 timestamp_set_precision(TS_PREC_AUTO_CSEC);
228 case(WTAP_FILE_TSPREC_MSEC):
229 timestamp_set_precision(TS_PREC_AUTO_MSEC);
231 case(WTAP_FILE_TSPREC_USEC):
232 timestamp_set_precision(TS_PREC_AUTO_USEC);
234 case(WTAP_FILE_TSPREC_NSEC):
235 timestamp_set_precision(TS_PREC_AUTO_NSEC);
238 g_assert_not_reached();
241 /* Set the column widths of those columns that show the time in
242 "command-line-specified" format. */
243 for (i = 0; i < cf->cinfo.num_cols; i++) {
244 if (col_has_time_fmt(&cf->cinfo, i)) {
245 packet_list_resize_column(i);
251 cf_get_computed_elapsed(void)
253 return computed_elapsed;
256 static void reset_elapsed(void)
258 computed_elapsed = 0;
261 static void compute_elapsed(GTimeVal *start_time)
266 g_get_current_time(&time_now);
268 delta_time = (time_now.tv_sec - start_time->tv_sec) * 1e6 +
269 time_now.tv_usec - start_time->tv_usec;
271 computed_elapsed = (gulong) (delta_time / 1000); /* ms */
275 cf_open(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
280 wth = wtap_open_offline(fname, err, &err_info, TRUE);
284 /* The open succeeded. Close whatever capture file we had open,
285 and fill in the information for this file. */
288 /* Cleanup all data structures used for dissection. */
289 cleanup_dissection();
290 /* Initialize all data structures used for dissection. */
293 /* We're about to start reading the file. */
294 cf->state = FILE_READ_IN_PROGRESS;
299 /* Set the file name because we need it to set the follow stream filter.
300 XXX - is that still true? We need it for other reasons, though,
302 cf->filename = g_strdup(fname);
304 /* Indicate whether it's a permanent or temporary file. */
305 cf->is_tempfile = is_tempfile;
307 /* No user changes yet. */
308 cf->unsaved_changes = FALSE;
312 cf->cd_t = wtap_file_type(cf->wth);
313 cf->linktypes = g_array_sized_new(FALSE, FALSE, (guint) sizeof(int), 1);
315 cf->packet_comment_count = 0;
316 cf->displayed_count = 0;
317 cf->marked_count = 0;
318 cf->ignored_count = 0;
319 cf->ref_time_count = 0;
320 cf->drops_known = FALSE;
322 cf->snap = wtap_snapshot_length(cf->wth);
324 /* Snapshot length not known. */
325 cf->has_snap = FALSE;
326 cf->snap = WTAP_MAX_PACKET_SIZE;
330 /* Allocate a frame_data_sequence for the frames in this file */
331 cf->frames = new_frame_data_sequence();
333 nstime_set_zero(&cf->elapsed_time);
334 nstime_set_unset(&first_ts);
339 /* Adjust timestamp precision if auto is selected, col width will be adjusted */
340 cf_timestamp_auto_precision(cf);
342 packet_list_queue_draw();
343 cf_callback_invoke(cf_cb_file_opened, cf);
345 if (cf->cd_t == WTAP_FILE_BER) {
346 /* tell the BER dissector the file name */
347 ber_set_filename(cf->filename);
350 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
351 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
356 cf_open_failure_alert_box(fname, *err, err_info, FALSE, 0);
361 * Add an encapsulation type to cf->linktypes.
364 cf_add_encapsulation_type(capture_file *cf, int encap)
368 for (i = 0; i < cf->linktypes->len; i++) {
369 if (g_array_index(cf->linktypes, gint, i) == encap)
370 return; /* it's already there */
372 /* It's not already there - add it. */
373 g_array_append_val(cf->linktypes, encap);
377 * Reset the state for the currently closed file, but don't do the
378 * UI callbacks; this is for use in "cf_open()", where we don't
379 * want the UI to go from "file open" to "file closed" back to
380 * "file open", we want it to go from "old file open" to "new file
381 * open and being read".
383 * XXX - currently, cf_open() calls cf_close(), rather than
387 cf_reset_state(capture_file *cf)
389 /* Die if we're in the middle of reading a file. */
390 g_assert(cf->state != FILE_READ_IN_PROGRESS);
396 /* We have no file open... */
397 if (cf->filename != NULL) {
398 /* If it's a temporary file, remove it. */
400 ws_unlink(cf->filename);
401 g_free(cf->filename);
404 /* ...which means we have no changes to that file to save. */
405 cf->unsaved_changes = FALSE;
407 dfilter_free(cf->rfcode);
409 if (cf->frames != NULL) {
410 free_frame_data_sequence(cf->frames);
413 #ifdef WANT_PACKET_EDITOR
414 if (cf->edited_frames) {
415 g_tree_destroy(cf->edited_frames);
416 cf->edited_frames = NULL;
419 cf_unselect_packet(cf); /* nothing to select */
420 cf->first_displayed = 0;
421 cf->last_displayed = 0;
423 /* No frames, no frame selected, no field in that frame selected. */
425 cf->current_frame = 0;
427 cf->finfo_selected = NULL;
429 /* No frame link-layer types, either. */
430 g_array_free(cf->linktypes, TRUE);
431 cf->linktypes = NULL;
433 /* Clear the packet list. */
434 packet_list_freeze();
439 nstime_set_zero(&cf->elapsed_time);
441 reset_tap_listeners();
443 /* We have no file open. */
444 cf->state = FILE_CLOSED;
447 /* Reset everything to a pristine state */
449 cf_close(capture_file *cf)
451 if (cf->state != FILE_CLOSED) {
452 cf_callback_invoke(cf_cb_file_closing, cf);
454 /* close things, if not already closed before */
455 color_filters_cleanup();
457 cleanup_dissection();
459 cf_callback_invoke(cf_cb_file_closed, cf);
464 calc_progbar_val(capture_file *cf, gint64 size, gint64 file_pos, gchar *status_str, gulong status_size)
468 progbar_val = (gfloat) file_pos / (gfloat) size;
469 if (progbar_val > 1.0) {
471 /* The file probably grew while we were reading it.
472 * Update file size, and try again.
474 size = wtap_file_size(cf->wth, NULL);
477 progbar_val = (gfloat) file_pos / (gfloat) size;
479 /* If it's still > 1, either "wtap_file_size()" failed (in which
480 * case there's not much we can do about it), or the file
481 * *shrank* (in which case there's not much we can do about
482 * it); just clip the progress value at 1.0.
484 if (progbar_val > 1.0f)
488 g_snprintf(status_str, status_size,
489 "%" G_GINT64_MODIFIER "dKB of %" G_GINT64_MODIFIER "dKB",
490 file_pos / 1024, size / 1024);
496 cf_read(capture_file *cf, gboolean reloading)
503 progdlg_t *volatile progbar = NULL;
505 volatile gint64 size;
506 volatile float progbar_val;
508 gchar status_str[100];
509 volatile gint64 progbar_nextstep;
510 volatile gint64 progbar_quantum;
512 gboolean filtering_tap_listeners;
514 volatile int count = 0;
516 volatile int displayed_once = 0;
520 /* Compile the current display filter.
521 * We assume this will not fail since cf->dfilter is only set in
522 * cf_filter IFF the filter was valid.
524 compiled = dfilter_compile(cf->dfilter, &dfcode);
525 g_assert(!cf->dfilter || (compiled && dfcode));
527 /* Do we have any tap listeners with filters? */
528 filtering_tap_listeners = have_filtering_tap_listeners();
530 /* Get the union of the flags for all tap listeners. */
531 tap_flags = union_of_tap_listener_flags();
533 reset_tap_listeners();
535 name_ptr = g_filename_display_basename(cf->filename);
538 cf_callback_invoke(cf_cb_file_reload_started, cf);
540 cf_callback_invoke(cf_cb_file_read_started, cf);
542 /* Record whether the file is compressed.
543 XXX - do we know this at open time? */
544 cf->iscompressed = wtap_iscompressed(cf->wth);
546 /* Find the size of the file. */
547 size = wtap_file_size(cf->wth, NULL);
549 /* Update the progress bar when it gets to this value. */
550 progbar_nextstep = 0;
551 /* When we reach the value that triggers a progress bar update,
552 bump that value by this amount. */
554 progbar_quantum = size/N_PROGBAR_UPDATES;
555 if (progbar_quantum < MIN_QUANTUM)
556 progbar_quantum = MIN_QUANTUM;
559 /* Progress so far. */
562 /* The packet list window will be empty until the file is completly loaded */
563 packet_list_freeze();
566 g_get_current_time(&start_time);
568 while ((wtap_read(cf->wth, &err, &err_info, &data_offset))) {
571 file_pos = wtap_read_so_far(cf->wth);
573 /* Create the progress bar if necessary.
574 * Check whether it should be created or not every MIN_NUMBER_OF_PACKET
576 if ((progbar == NULL) && !(count % MIN_NUMBER_OF_PACKET)) {
577 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
579 progbar = delayed_create_progress_dlg(cf->window, "Reloading", name_ptr,
580 TRUE, &stop_flag, &start_time, progbar_val);
582 progbar = delayed_create_progress_dlg(cf->window, "Loading", name_ptr,
583 TRUE, &stop_flag, &start_time, progbar_val);
586 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
587 when we update it, we have to run the GTK+ main loop to get it
588 to repaint what's pending, and doing so may involve an "ioctl()"
589 to see if there's any pending input from an X server, and doing
590 that for every packet can be costly, especially on a big file. */
591 if (file_pos >= progbar_nextstep) {
592 if (progbar != NULL) {
593 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
594 /* update the packet bar content on the first run or frequently on very large files */
596 if (progbar_quantum > 500000 || displayed_once == 0) {
597 if ((auto_scroll_live || displayed_once == 0 || cf->displayed_count < 1000) && cf->count != 0) {
599 packets_bar_update();
602 #endif /* HAVE_LIBPCAP */
603 update_progress_dlg(progbar, progbar_val, status_str);
605 progbar_nextstep += progbar_quantum;
610 /* Well, the user decided to abort the read. He/She will be warned and
611 it might be enough for him/her to work with the already loaded
613 This is especially true for very large capture files, where you don't
614 want to wait loading the whole file (which may last minutes or even
615 hours even on fast machines) just to see that it was the wrong file. */
619 read_packet(cf, dfcode, filtering_tap_listeners, tap_flags, data_offset);
621 CATCH(OutOfMemoryError) {
622 simple_message_box(ESD_TYPE_ERROR, NULL,
623 "Some infos / workarounds can be found at:\n"
624 "http://wiki.wireshark.org/KnownBugs/OutOfMemory",
625 "Sorry, but Wireshark has run out of memory and has to terminate now!");
627 /* Could we close the current capture and free up memory from that? */
630 /* we have to terminate, as we cannot recover from the memory error */
637 /* Free the display name */
640 /* Cleanup and release all dfilter resources */
641 if (dfcode != NULL) {
642 dfilter_free(dfcode);
645 /* We're done reading the file; destroy the progress bar if it was created. */
647 destroy_progress_dlg(progbar);
649 /* We're done reading sequentially through the file. */
650 cf->state = FILE_READ_DONE;
652 /* Close the sequential I/O side, to free up memory it requires. */
653 wtap_sequential_close(cf->wth);
655 /* Allow the protocol dissectors to free up memory that they
656 * don't need after the sequential run-through of the packets. */
657 postseq_cleanup_all_protocols();
659 /* compute the time it took to load the file */
660 compute_elapsed(&start_time);
662 /* Set the file encapsulation type now; we don't know what it is until
663 we've looked at all the packets, as we don't know until then whether
664 there's more than one type (and thus whether it's
665 WTAP_ENCAP_PER_PACKET). */
666 cf->lnk_t = wtap_file_encap(cf->wth);
668 cf->current_frame = frame_data_sequence_find(cf->frames, cf->first_displayed);
673 cf_callback_invoke(cf_cb_file_reload_finished, cf);
675 cf_callback_invoke(cf_cb_file_read_finished, cf);
677 /* If we have any displayed packets to select, select the first of those
678 packets by making the first row the selected row. */
679 if (cf->first_displayed != 0) {
680 packet_list_select_first_row();
684 simple_message_box(ESD_TYPE_WARN, NULL,
685 "The remaining packets in the file were discarded.\n"
687 "As a lot of packets from the original file will be missing,\n"
688 "remember to be careful when saving the current content to a file.\n",
689 "File loading was cancelled!");
690 return CF_READ_ERROR;
694 /* Put up a message box noting that the read failed somewhere along
695 the line. Don't throw out the stuff we managed to read, though,
699 case WTAP_ERR_UNSUPPORTED:
700 simple_error_message_box(
701 "The capture file contains record data that Wireshark doesn't support.\n(%s)",
706 case WTAP_ERR_UNSUPPORTED_ENCAP:
707 simple_error_message_box(
708 "The capture file has a packet with a network type that Wireshark doesn't support.\n(%s)",
713 case WTAP_ERR_CANT_READ:
714 simple_error_message_box(
715 "An attempt to read from the capture file failed for"
716 " some unknown reason.");
719 case WTAP_ERR_SHORT_READ:
720 simple_error_message_box(
721 "The capture file appears to have been cut short"
722 " in the middle of a packet.");
725 case WTAP_ERR_BAD_FILE:
726 simple_error_message_box(
727 "The capture file appears to be damaged or corrupt.\n(%s)",
732 case WTAP_ERR_DECOMPRESS:
733 simple_error_message_box(
734 "The compressed capture file appears to be damaged or corrupt.\n"
740 simple_error_message_box(
741 "An error occurred while reading the"
742 " capture file: %s.", wtap_strerror(err));
745 return CF_READ_ERROR;
752 cf_start_tail(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
754 cf_status_t cf_status;
756 cf_status = cf_open(cf, fname, is_tempfile, err);
761 cf_continue_tail(capture_file *cf, volatile int to_read, int *err)
763 gint64 data_offset = 0;
765 volatile int newly_displayed_packets = 0;
767 gboolean filtering_tap_listeners;
771 /* Compile the current display filter.
772 * We assume this will not fail since cf->dfilter is only set in
773 * cf_filter IFF the filter was valid.
775 compiled = dfilter_compile(cf->dfilter, &dfcode);
776 g_assert(!cf->dfilter || (compiled && dfcode));
778 /* Do we have any tap listeners with filters? */
779 filtering_tap_listeners = have_filtering_tap_listeners();
781 /* Get the union of the flags for all tap listeners. */
782 tap_flags = union_of_tap_listener_flags();
786 packet_list_check_end();
787 /* Don't freeze/thaw the list when doing live capture */
788 /*packet_list_freeze();*/
790 /*g_log(NULL, G_LOG_LEVEL_MESSAGE, "cf_continue_tail: %u new: %u", cf->count, to_read);*/
792 while (to_read != 0) {
793 wtap_cleareof(cf->wth);
794 if (!wtap_read(cf->wth, err, &err_info, &data_offset)) {
797 if (cf->state == FILE_READ_ABORTED) {
798 /* Well, the user decided to exit Wireshark. Break out of the
799 loop, and let the code below (which is called even if there
800 aren't any packets left to read) exit. */
804 if (read_packet(cf, dfcode, filtering_tap_listeners, tap_flags,
805 data_offset) != -1) {
806 newly_displayed_packets++;
809 CATCH(OutOfMemoryError) {
810 simple_message_box(ESD_TYPE_ERROR, NULL,
811 "Some infos / workarounds can be found at:\n"
812 "http://wiki.wireshark.org/KnownBugs/OutOfMemory",
813 "Sorry, but Wireshark has run out of memory and has to terminate now!");
815 /* Could we close the current capture and free up memory from that? */
816 return CF_READ_ABORTED;
818 /* we have to terminate, as we cannot recover from the memory error */
826 /* Update the file encapsulation; it might have changed based on the
827 packets we've read. */
828 cf->lnk_t = wtap_file_encap(cf->wth);
830 /* Cleanup and release all dfilter resources */
831 if (dfcode != NULL) {
832 dfilter_free(dfcode);
835 /*g_log(NULL, G_LOG_LEVEL_MESSAGE, "cf_continue_tail: count %u state: %u err: %u",
836 cf->count, cf->state, *err);*/
838 /* Don't freeze/thaw the list when doing live capture */
839 /*packet_list_thaw();*/
840 /* With the new packet list the first packet
841 * isn't automatically selected.
843 if (!cf->current_frame)
844 packet_list_select_first_row();
846 /* moving to the end of the packet list - if the user requested so and
847 we have some new packets. */
848 if (newly_displayed_packets && auto_scroll_live && cf->count != 0)
849 packet_list_moveto_end();
851 if (cf->state == FILE_READ_ABORTED) {
852 /* Well, the user decided to exit Wireshark. Return CF_READ_ABORTED
853 so that our caller can kill off the capture child process;
854 this will cause an EOF on the pipe from the child, so
855 "cf_finish_tail()" will be called, and it will clean up
857 return CF_READ_ABORTED;
858 } else if (*err != 0) {
859 /* We got an error reading the capture file.
860 XXX - pop up a dialog box instead? */
861 g_warning("Error \"%s\" while reading: \"%s\" (\"%s\")",
862 wtap_strerror(*err), err_info, cf->filename);
865 return CF_READ_ERROR;
871 cf_fake_continue_tail(capture_file *cf) {
872 cf->state = FILE_READ_DONE;
876 cf_finish_tail(capture_file *cf, int *err)
881 gboolean filtering_tap_listeners;
885 /* Compile the current display filter.
886 * We assume this will not fail since cf->dfilter is only set in
887 * cf_filter IFF the filter was valid.
889 compiled = dfilter_compile(cf->dfilter, &dfcode);
890 g_assert(!cf->dfilter || (compiled && dfcode));
892 /* Do we have any tap listeners with filters? */
893 filtering_tap_listeners = have_filtering_tap_listeners();
895 /* Get the union of the flags for all tap listeners. */
896 tap_flags = union_of_tap_listener_flags();
898 if (cf->wth == NULL) {
900 return CF_READ_ERROR;
903 packet_list_check_end();
904 /* Don't freeze/thaw the list when doing live capture */
905 /*packet_list_freeze();*/
907 while ((wtap_read(cf->wth, err, &err_info, &data_offset))) {
908 if (cf->state == FILE_READ_ABORTED) {
909 /* Well, the user decided to abort the read. Break out of the
910 loop, and let the code below (which is called even if there
911 aren't any packets left to read) exit. */
914 read_packet(cf, dfcode, filtering_tap_listeners, tap_flags, data_offset);
917 /* Cleanup and release all dfilter resources */
918 if (dfcode != NULL) {
919 dfilter_free(dfcode);
922 /* Don't freeze/thaw the list when doing live capture */
923 /*packet_list_thaw();*/
925 if (cf->state == FILE_READ_ABORTED) {
926 /* Well, the user decided to abort the read. We're only called
927 when the child capture process closes the pipe to us (meaning
928 it's probably exited), so we can just close the capture
929 file; we return CF_READ_ABORTED so our caller can do whatever
930 is appropriate when that happens. */
932 return CF_READ_ABORTED;
935 if (auto_scroll_live && cf->count != 0)
936 packet_list_moveto_end();
938 /* We're done reading sequentially through the file. */
939 cf->state = FILE_READ_DONE;
941 /* We're done reading sequentially through the file; close the
942 sequential I/O side, to free up memory it requires. */
943 wtap_sequential_close(cf->wth);
945 /* Allow the protocol dissectors to free up memory that they
946 * don't need after the sequential run-through of the packets. */
947 postseq_cleanup_all_protocols();
949 /* Update the file encapsulation; it might have changed based on the
950 packets we've read. */
951 cf->lnk_t = wtap_file_encap(cf->wth);
953 /* Update the details in the file-set dialog, as the capture file
954 * has likely grown since we first stat-ed it */
955 fileset_update_file(cf->filename);
958 /* We got an error reading the capture file.
959 XXX - pop up a dialog box? */
961 g_warning("Error \"%s\" while reading: \"%s\" (\"%s\")",
962 wtap_strerror(*err), err_info, cf->filename);
964 return CF_READ_ERROR;
969 #endif /* HAVE_LIBPCAP */
972 cf_get_display_name(capture_file *cf)
976 /* Return a name to use in displays */
977 if (!cf->is_tempfile) {
978 /* Get the last component of the file name, and use that. */
980 displayname = g_filename_display_basename(cf->filename);
982 displayname=g_strdup("(No file)");
985 /* The file we read is a temporary file from a live capture or
986 a merge operation; we don't mention its name, but, if it's
987 from a capture, give the source of the capture. */
989 displayname = g_strdup(cf->source);
991 displayname = g_strdup("(Untitled)");
997 void cf_set_tempfile_source(capture_file *cf, gchar *source) {
1003 cf->source = g_strdup(source);
1005 cf->source = g_strdup("");
1009 const gchar *cf_get_tempfile_source(capture_file *cf) {
1017 /* XXX - use a macro instead? */
1019 cf_get_packet_count(capture_file *cf)
1024 /* XXX - use a macro instead? */
1026 cf_set_packet_count(capture_file *cf, int packet_count)
1028 cf->count = packet_count;
1031 /* XXX - use a macro instead? */
1033 cf_is_tempfile(capture_file *cf)
1035 return cf->is_tempfile;
1038 void cf_set_tempfile(capture_file *cf, gboolean is_tempfile)
1040 cf->is_tempfile = is_tempfile;
1044 /* XXX - use a macro instead? */
1045 void cf_set_drops_known(capture_file *cf, gboolean drops_known)
1047 cf->drops_known = drops_known;
1050 /* XXX - use a macro instead? */
1051 void cf_set_drops(capture_file *cf, guint32 drops)
1056 /* XXX - use a macro instead? */
1057 gboolean cf_get_drops_known(capture_file *cf)
1059 return cf->drops_known;
1062 /* XXX - use a macro instead? */
1063 guint32 cf_get_drops(capture_file *cf)
1068 void cf_set_rfcode(capture_file *cf, dfilter_t *rfcode)
1070 cf->rfcode = rfcode;
1074 find_and_mark_frame_depended_upon(gpointer data, gpointer user_data)
1076 frame_data *dependent_fd;
1077 guint32 dependent_frame = GPOINTER_TO_UINT(data);
1078 capture_file *cf = (capture_file *)user_data;
1080 dependent_fd = frame_data_sequence_find(cf->frames, dependent_frame);
1081 dependent_fd->flags.dependent_of_displayed = 1;
1085 add_packet_to_packet_list(frame_data *fdata, capture_file *cf,
1086 dfilter_t *dfcode, gboolean filtering_tap_listeners,
1088 union wtap_pseudo_header *pseudo_header, const guchar *buf,
1090 gboolean add_to_packet_list)
1092 gboolean create_proto_tree = FALSE;
1097 cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
1099 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
1100 &first_ts, prev_dis, prev_cap);
1104 + we have a display filter and are re-applying it;
1105 + we have tap listeners with filters;
1106 + we have tap listeners that require a protocol tree;
1108 allocate a protocol tree root node, so that we'll construct
1109 a protocol tree against which a filter expression can be
1111 if ((dfcode != NULL && refilter) ||
1112 filtering_tap_listeners || (tap_flags & TL_REQUIRES_PROTO_TREE))
1113 create_proto_tree = TRUE;
1115 /* Dissect the frame. */
1116 epan_dissect_init(&edt, create_proto_tree, FALSE);
1118 if (dfcode != NULL && refilter) {
1119 epan_dissect_prime_dfilter(&edt, dfcode);
1122 tap_queue_init(&edt);
1123 epan_dissect_run(&edt, pseudo_header, buf, fdata, cinfo);
1124 tap_push_tapped_queue(&edt);
1126 /* If we have a display filter, apply it if we're refiltering, otherwise
1127 leave the "passed_dfilter" flag alone.
1129 If we don't have a display filter, set "passed_dfilter" to 1. */
1130 if (dfcode != NULL) {
1132 fdata->flags.passed_dfilter = dfilter_apply_edt(dfcode, &edt) ? 1 : 0;
1134 if (fdata->flags.passed_dfilter) {
1135 /* This frame passed the display filter but it may depend on other
1136 * (potentially not displayed) frames. Find those frames and mark them
1139 g_slist_foreach(edt.pi.dependent_frames, find_and_mark_frame_depended_upon, cf);
1143 fdata->flags.passed_dfilter = 1;
1145 if (fdata->flags.passed_dfilter || fdata->flags.ref_time)
1146 cf->displayed_count++;
1148 if (add_to_packet_list) {
1149 /* We fill the needed columns from new_packet_list */
1150 row = packet_list_append(cinfo, fdata, &edt.pi);
1153 if (fdata->flags.passed_dfilter || fdata->flags.ref_time)
1155 frame_data_set_after_dissect(fdata, &cum_bytes);
1158 /* If we haven't yet seen the first frame, this is it.
1160 XXX - we must do this before we add the row to the display,
1161 as, if the display's GtkCList's selection mode is
1162 GTK_SELECTION_BROWSE, when the first entry is added to it,
1163 "cf_select_packet()" will be called, and it will fetch the row
1164 data for the 0th row, and will get a null pointer rather than
1165 "fdata", as "gtk_clist_append()" won't yet have returned and
1166 thus "gtk_clist_set_row_data()" won't yet have been called.
1168 We thus need to leave behind bread crumbs so that
1169 "cf_select_packet()" can find this frame. See the comment
1170 in "cf_select_packet()". */
1171 if (cf->first_displayed == 0)
1172 cf->first_displayed = fdata->num;
1174 /* This is the last frame we've seen so far. */
1175 cf->last_displayed = fdata->num;
1178 epan_dissect_cleanup(&edt);
1182 /* read in a new packet */
1183 /* returns the row of the new packet in the packet list or -1 if not displayed */
1185 read_packet(capture_file *cf, dfilter_t *dfcode,
1186 gboolean filtering_tap_listeners, guint tap_flags, gint64 offset)
1188 const struct wtap_pkthdr *phdr = wtap_phdr(cf->wth);
1189 union wtap_pseudo_header *pseudo_header = wtap_pseudoheader(cf->wth);
1190 const guchar *buf = wtap_buf_ptr(cf->wth);
1197 /* Add this packet's link-layer encapsulation type to cf->linktypes, if
1198 it's not already there.
1199 XXX - yes, this is O(N), so if every packet had a different
1200 link-layer encapsulation type, it'd be O(N^2) to read the file, but
1201 there are probably going to be a small number of encapsulation types
1203 cf_add_encapsulation_type(cf, phdr->pkt_encap);
1205 /* The frame number of this packet is one more than the count of
1206 frames in the file so far. */
1207 framenum = cf->count + 1;
1209 frame_data_init(&fdlocal, framenum, phdr, offset, cum_bytes);
1214 epan_dissect_init(&edt, TRUE, FALSE);
1215 epan_dissect_prime_dfilter(&edt, cf->rfcode);
1216 epan_dissect_run(&edt, pseudo_header, buf, &fdlocal, NULL);
1217 passed = dfilter_apply_edt(cf->rfcode, &edt);
1218 epan_dissect_cleanup(&edt);
1222 /* This does a shallow copy of fdlocal, which is good enough. */
1223 fdata = frame_data_sequence_add(cf->frames, &fdlocal);
1226 if (fdlocal.opt_comment != NULL)
1227 cf->packet_comment_count++;
1228 cf->f_datalen = offset + fdlocal.cap_len;
1230 if (!cf->redissecting) {
1231 row = add_packet_to_packet_list(fdata, cf, dfcode,
1232 filtering_tap_listeners, tap_flags,
1233 pseudo_header, buf, TRUE, TRUE);
1241 cf_merge_files(char **out_filenamep, int in_file_count,
1242 char *const *in_filenames, int file_type, gboolean do_append)
1244 merge_in_file_t *in_files, *in_file;
1249 int open_err, read_err, write_err, close_err;
1253 gboolean got_read_error = FALSE, got_write_error = FALSE;
1255 progdlg_t *progbar = NULL;
1257 gint64 f_len, file_pos;
1259 GTimeVal start_time;
1260 gchar status_str[100];
1261 gint64 progbar_nextstep;
1262 gint64 progbar_quantum;
1263 gchar *display_basename;
1264 int selected_frame_type;
1265 gboolean fake_interface_ids = FALSE;
1267 /* open the input files */
1268 if (!merge_open_in_files(in_file_count, in_filenames, &in_files,
1269 &open_err, &err_info, &err_fileno)) {
1271 cf_open_failure_alert_box(in_filenames[err_fileno], open_err, err_info,
1276 if (*out_filenamep != NULL) {
1277 out_filename = *out_filenamep;
1278 out_fd = ws_open(out_filename, O_CREAT|O_TRUNC|O_BINARY, 0600);
1282 out_fd = create_tempfile(&tmpname, "wireshark");
1285 out_filename = g_strdup(tmpname);
1286 *out_filenamep = out_filename;
1290 merge_close_in_files(in_file_count, in_files);
1292 cf_open_failure_alert_box(out_filename, open_err, NULL, TRUE, file_type);
1296 selected_frame_type = merge_select_frame_type(in_file_count, in_files);
1298 /* If we are trying to merge a number of libpcap files with different encapsulation types
1299 * change the output file type to pcapng and create SHB and IDB:s for the new file use the
1300 * interface index stored in in_files per file to change the phdr before writing the datablock.
1301 * XXX should it be an option to convert to pcapng?
1303 * We need something similar when merging pcapng files possibly with an option to say
1304 * the same interface(s) used in all in files. SHBs comments should be merged together.
1306 if ((selected_frame_type == WTAP_ENCAP_PER_PACKET)&&(file_type == WTAP_FILE_PCAP)) {
1307 /* Write output in pcapng format */
1308 wtapng_section_t *shb_hdr;
1309 wtapng_iface_descriptions_t *idb_inf, *idb_inf_merge_file;
1310 wtapng_if_descr_t int_data, *file_int_data;
1311 GString *comment_gstr;
1314 fake_interface_ids = TRUE;
1315 /* Create SHB info */
1316 shb_hdr = wtap_file_get_shb_info(in_files[0].wth);
1317 comment_gstr = g_string_new("");
1318 g_string_append_printf(comment_gstr, "%s \n",shb_hdr->opt_comment);
1319 g_string_append_printf(comment_gstr, "File created by merging: \n");
1320 file_type = WTAP_FILE_PCAPNG;
1322 for (i = 0; i < in_file_count; i++) {
1323 g_string_append_printf(comment_gstr, "File%d: %s \n",i+1,in_files[i].filename);
1325 shb_hdr->section_length = -1;
1327 shb_hdr->opt_comment = g_string_free(comment_gstr, FALSE); /* NULL if not available */
1328 shb_hdr->shb_hardware = NULL; /* NULL if not available, UTF-8 string containing the */
1329 /* description of the hardware used to create this section. */
1330 shb_hdr->shb_os = NULL; /* NULL if not available, UTF-8 string containing the name */
1331 /* of the operating system used to create this section. */
1332 shb_hdr->shb_user_appl = "Wireshark"; /* NULL if not available, UTF-8 string containing the name */
1333 /* of the application used to create this section. */
1335 /* create fake IDB info */
1336 idb_inf = g_new(wtapng_iface_descriptions_t,1);
1337 idb_inf->number_of_interfaces = in_file_count; /* TODO make this the number of DIFFERENT encapsulation types
1338 * check that snaplength is the same too?
1340 idb_inf->interface_data = g_array_new(FALSE, FALSE, sizeof(wtapng_if_descr_t));
1342 for (i = 0; i < in_file_count; i++) {
1343 idb_inf_merge_file = wtap_file_get_idb_info(in_files[i].wth);
1344 /* read the interface data from the in file to our combined interfca data */
1345 file_int_data = &g_array_index (idb_inf_merge_file->interface_data, wtapng_if_descr_t, 0);
1346 int_data.wtap_encap = file_int_data->wtap_encap;
1347 int_data.time_units_per_second = file_int_data->time_units_per_second;
1348 int_data.link_type = file_int_data->link_type;
1349 int_data.snap_len = file_int_data->snap_len;
1350 int_data.if_name = g_strdup(file_int_data->if_name);
1351 int_data.opt_comment = NULL;
1352 int_data.if_description = NULL;
1353 int_data.if_speed = 0;
1354 int_data.if_tsresol = 6;
1355 int_data.if_filter_str = NULL;
1356 int_data.bpf_filter_len = 0;
1357 int_data.if_filter_bpf_bytes = NULL;
1358 int_data.if_os = NULL;
1359 int_data.if_fcslen = -1;
1360 int_data.num_stat_entries = 0; /* Number of ISB:s */
1361 int_data.interface_statistics = NULL;
1363 g_array_append_val(idb_inf->interface_data, int_data);
1364 g_free(idb_inf_merge_file);
1366 /* Set fake interface Id in per file data */
1367 in_files[i].interface_id = i;
1370 pdh = wtap_dump_fdopen_ng(out_fd, file_type,
1371 selected_frame_type,
1372 merge_max_snapshot_length(in_file_count, in_files),
1373 FALSE /* compressed */, shb_hdr, idb_inf /* wtapng_iface_descriptions_t *idb_inf */, &open_err);
1377 merge_close_in_files(in_file_count, in_files);
1379 cf_open_failure_alert_box(out_filename, open_err, err_info, TRUE,
1386 pdh = wtap_dump_fdopen(out_fd, file_type,
1387 selected_frame_type,
1388 merge_max_snapshot_length(in_file_count, in_files),
1389 FALSE /* compressed */, &open_err);
1392 merge_close_in_files(in_file_count, in_files);
1394 cf_open_failure_alert_box(out_filename, open_err, err_info, TRUE,
1400 /* Get the sum of the sizes of all the files. */
1402 for (i = 0; i < in_file_count; i++)
1403 f_len += in_files[i].size;
1405 /* Update the progress bar when it gets to this value. */
1406 progbar_nextstep = 0;
1407 /* When we reach the value that triggers a progress bar update,
1408 bump that value by this amount. */
1409 progbar_quantum = f_len/N_PROGBAR_UPDATES;
1410 /* Progress so far. */
1414 g_get_current_time(&start_time);
1416 /* do the merge (or append) */
1419 in_file = merge_append_read_packet(in_file_count, in_files, &read_err,
1422 in_file = merge_read_packet(in_file_count, in_files, &read_err,
1424 if (in_file == NULL) {
1429 if (read_err != 0) {
1430 /* I/O error reading from in_file */
1431 got_read_error = TRUE;
1435 /* Get the sum of the data offsets in all of the files. */
1437 for (i = 0; i < in_file_count; i++)
1438 data_offset += in_files[i].data_offset;
1440 /* Create the progress bar if necessary.
1441 We check on every iteration of the loop, so that it takes no
1442 longer than the standard time to create it (otherwise, for a
1443 large file, we might take considerably longer than that standard
1444 time in order to get to the next progress bar step). */
1445 if (progbar == NULL) {
1446 progbar = delayed_create_progress_dlg(NULL, "Merging", "files",
1447 FALSE, &stop_flag, &start_time, progbar_val);
1450 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
1451 when we update it, we have to run the GTK+ main loop to get it
1452 to repaint what's pending, and doing so may involve an "ioctl()"
1453 to see if there's any pending input from an X server, and doing
1454 that for every packet can be costly, especially on a big file. */
1455 if (data_offset >= progbar_nextstep) {
1456 /* Get the sum of the seek positions in all of the files. */
1458 for (i = 0; i < in_file_count; i++)
1459 file_pos += wtap_read_so_far(in_files[i].wth);
1460 progbar_val = (gfloat) file_pos / (gfloat) f_len;
1461 if (progbar_val > 1.0f) {
1462 /* Some file probably grew while we were reading it.
1463 That "shouldn't happen", so we'll just clip the progress
1467 if (progbar != NULL) {
1468 g_snprintf(status_str, sizeof(status_str),
1469 "%" G_GINT64_MODIFIER "dKB of %" G_GINT64_MODIFIER "dKB",
1470 file_pos / 1024, f_len / 1024);
1471 update_progress_dlg(progbar, progbar_val, status_str);
1473 progbar_nextstep += progbar_quantum;
1477 /* Well, the user decided to abort the merge. */
1481 /* If we have WTAP_ENCAP_PER_PACKETend the infiles are of type WTAP_FILE_PCAP
1482 * we need to set the interface id in the paket header = the interface index we used
1483 * in the IDBs interface description for this file(encapsulation type).
1485 if (fake_interface_ids) {
1486 struct wtap_pkthdr *phdr;
1488 phdr = wtap_phdr(in_file->wth);
1489 phdr->interface_id = in_file->interface_id;
1490 phdr->presence_flags = phdr->presence_flags | WTAP_HAS_INTERFACE_ID;
1492 if (!wtap_dump(pdh, wtap_phdr(in_file->wth), wtap_pseudoheader(in_file->wth),
1493 wtap_buf_ptr(in_file->wth), &write_err)) {
1494 got_write_error = TRUE;
1499 /* We're done merging the files; destroy the progress bar if it was created. */
1500 if (progbar != NULL)
1501 destroy_progress_dlg(progbar);
1503 merge_close_in_files(in_file_count, in_files);
1504 if (!got_read_error && !got_write_error) {
1505 if (!wtap_dump_close(pdh, &write_err))
1506 got_write_error = TRUE;
1508 wtap_dump_close(pdh, &close_err);
1510 if (got_read_error) {
1512 * Find the file on which we got the error, and report the error.
1514 for (i = 0; i < in_file_count; i++) {
1515 if (in_files[i].state == GOT_ERROR) {
1516 /* Put up a message box noting that a read failed somewhere along
1518 display_basename = g_filename_display_basename(in_files[i].filename);
1521 case WTAP_ERR_UNSUPPORTED_ENCAP:
1522 simple_error_message_box(
1523 "The capture file %s has a packet with a network type that Wireshark doesn't support.\n(%s)",
1524 display_basename, err_info);
1528 case WTAP_ERR_CANT_READ:
1529 simple_error_message_box(
1530 "An attempt to read from the capture file %s failed for"
1531 " some unknown reason.", display_basename);
1534 case WTAP_ERR_SHORT_READ:
1535 simple_error_message_box(
1536 "The capture file %s appears to have been cut short"
1537 " in the middle of a packet.", display_basename);
1540 case WTAP_ERR_BAD_FILE:
1541 simple_error_message_box(
1542 "The capture file %s appears to be damaged or corrupt.\n(%s)",
1543 display_basename, err_info);
1547 case WTAP_ERR_DECOMPRESS:
1548 simple_error_message_box(
1549 "The compressed capture file %s appears to be damaged or corrupt.\n"
1550 "(%s)", display_basename, err_info);
1555 simple_error_message_box(
1556 "An error occurred while reading the"
1557 " capture file %s: %s.",
1558 display_basename, wtap_strerror(read_err));
1561 g_free(display_basename);
1566 if (got_write_error) {
1567 /* Put up an alert box for the write error. */
1568 if (write_err < 0) {
1569 /* Wiretap error. */
1570 switch (write_err) {
1572 case WTAP_ERR_UNSUPPORTED_ENCAP:
1574 * This is a problem with the particular frame we're writing;
1575 * note that, and give the frame number.
1577 display_basename = g_filename_display_basename(in_file->filename);
1578 simple_error_message_box(
1579 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.",
1580 in_file->packet_num, display_basename,
1581 wtap_file_type_string(file_type));
1582 g_free(display_basename);
1586 display_basename = g_filename_display_basename(out_filename);
1587 simple_error_message_box(
1588 "An error occurred while writing to the file \"%s\": %s.",
1589 out_filename, wtap_strerror(write_err));
1590 g_free(display_basename);
1595 write_failure_alert_box(out_filename, write_err);
1599 if (got_read_error || got_write_error || stop_flag) {
1600 /* Callers aren't expected to treat an error or an explicit abort
1601 differently - we put up error dialogs ourselves, so they don't
1609 cf_filter_packets(capture_file *cf, gchar *dftext, gboolean force)
1611 const char *filter_new = dftext ? dftext : "";
1612 const char *filter_old = cf->dfilter ? cf->dfilter : "";
1614 GTimeVal start_time;
1616 /* if new filter equals old one, do nothing unless told to do so */
1617 if (!force && strcmp(filter_new, filter_old) == 0) {
1623 if (dftext == NULL) {
1624 /* The new filter is an empty filter (i.e., display all packets).
1625 * so leave dfcode==NULL
1629 * We have a filter; make a copy of it (as we'll be saving it),
1630 * and try to compile it.
1632 dftext = g_strdup(dftext);
1633 if (!dfilter_compile(dftext, &dfcode)) {
1634 /* The attempt failed; report an error. */
1635 simple_message_box(ESD_TYPE_ERROR, NULL,
1636 "See the help for a description of the display filter syntax.",
1637 "\"%s\" isn't a valid display filter: %s",
1638 dftext, dfilter_error_msg);
1644 if (dfcode == NULL) {
1645 /* Yes - free the filter text, and set it to null. */
1651 /* We have a valid filter. Replace the current filter. */
1652 g_free(cf->dfilter);
1653 cf->dfilter = dftext;
1654 g_get_current_time(&start_time);
1657 /* Now rescan the packet list, applying the new filter, but not
1658 throwing away information constructed on a previous pass. */
1659 if (dftext == NULL) {
1660 rescan_packets(cf, "Resetting", "Filter", TRUE, FALSE);
1662 rescan_packets(cf, "Filtering", dftext, TRUE, FALSE);
1665 /* Cleanup and release all dfilter resources */
1666 dfilter_free(dfcode);
1672 cf_reftime_packets(capture_file *cf)
1674 ref_time_packets(cf);
1678 cf_redissect_packets(capture_file *cf)
1680 rescan_packets(cf, "Reprocessing", "all packets", TRUE, TRUE);
1684 cf_read_frame_r(capture_file *cf, frame_data *fdata,
1685 union wtap_pseudo_header *pseudo_header, guint8 *pd)
1689 gchar *display_basename;
1691 #ifdef WANT_PACKET_EDITOR
1692 /* if fdata->file_off == -1 it means packet was edited, and we must find data inside edited_frames tree */
1693 if (G_UNLIKELY(fdata->file_off == -1)) {
1694 const modified_frame_data *frame = (const modified_frame_data *) g_tree_lookup(cf->edited_frames, GINT_TO_POINTER(fdata->num));
1697 simple_error_message_box("fdata->file_off == -1, but can't find modified frame!");
1701 *pseudo_header = frame->ph;
1702 memcpy(pd, frame->pd, fdata->cap_len);
1707 if (!wtap_seek_read(cf->wth, fdata->file_off, pseudo_header, pd,
1708 fdata->cap_len, &err, &err_info)) {
1709 display_basename = g_filename_display_basename(cf->filename);
1712 case WTAP_ERR_UNSUPPORTED_ENCAP:
1713 simple_error_message_box("The file \"%s\" has a packet with a network type that Wireshark doesn't support.\n(%s)",
1714 display_basename, err_info);
1718 case WTAP_ERR_BAD_FILE:
1719 simple_error_message_box("An error occurred while reading from the file \"%s\": %s.\n(%s)",
1720 display_basename, wtap_strerror(err), err_info);
1725 simple_error_message_box(
1726 "An error occurred while reading from the file \"%s\": %s.",
1727 display_basename, wtap_strerror(err));
1730 g_free(display_basename);
1737 cf_read_frame(capture_file *cf, frame_data *fdata)
1739 return cf_read_frame_r(cf, fdata, &cf->pseudo_header, cf->pd);
1742 /* Rescan the list of packets, reconstructing the CList.
1744 "action" describes why we're doing this; it's used in the progress
1747 "action_item" describes what we're doing; it's used in the progress
1750 "refilter" is TRUE if we need to re-evaluate the filter expression.
1752 "redissect" is TRUE if we need to make the dissectors reconstruct
1753 any state information they have (because a preference that affects
1754 some dissector has changed, meaning some dissector might construct
1755 its state differently from the way it was constructed the last time). */
1757 rescan_packets(capture_file *cf, const char *action, const char *action_item,
1758 gboolean refilter, gboolean redissect)
1760 /* Rescan packets new packet list */
1763 progdlg_t *progbar = NULL;
1766 frame_data *selected_frame, *preceding_frame, *following_frame, *prev_frame;
1767 int selected_frame_num, preceding_frame_num, following_frame_num, prev_frame_num;
1768 gboolean selected_frame_seen;
1770 GTimeVal start_time;
1771 gchar status_str[100];
1772 int progbar_nextstep;
1773 int progbar_quantum;
1775 gboolean filtering_tap_listeners;
1777 gboolean add_to_packet_list = FALSE;
1780 /* Compile the current display filter.
1781 * We assume this will not fail since cf->dfilter is only set in
1782 * cf_filter IFF the filter was valid.
1784 compiled = dfilter_compile(cf->dfilter, &dfcode);
1785 g_assert(!cf->dfilter || (compiled && dfcode));
1787 /* Do we have any tap listeners with filters? */
1788 filtering_tap_listeners = have_filtering_tap_listeners();
1790 /* Get the union of the flags for all tap listeners. */
1791 tap_flags = union_of_tap_listener_flags();
1793 reset_tap_listeners();
1794 /* Which frame, if any, is the currently selected frame?
1795 XXX - should the selected frame or the focus frame be the "current"
1796 frame, that frame being the one from which "Find Frame" searches
1798 selected_frame = cf->current_frame;
1800 /* Mark frame num as not found */
1801 selected_frame_num = -1;
1803 /* Freeze the packet list while we redo it, so we don't get any
1804 screen updates while it happens. */
1805 packet_list_freeze();
1808 /* We need to re-initialize all the state information that protocols
1809 keep, because some preference that controls a dissector has changed,
1810 which might cause the state information to be constructed differently
1811 by that dissector. */
1813 /* We might receive new packets while redissecting, and we don't
1814 want to dissect those before their time. */
1815 cf->redissecting = TRUE;
1817 /* Cleanup all data structures used for dissection. */
1818 cleanup_dissection();
1819 /* Initialize all data structures used for dissection. */
1822 /* We need to redissect the packets so we have to discard our old
1823 * packet list store. */
1824 packet_list_clear();
1825 add_to_packet_list = TRUE;
1828 /* We don't yet know which will be the first and last frames displayed. */
1829 cf->first_displayed = 0;
1830 cf->last_displayed = 0;
1832 /* We currently don't display any packets */
1833 cf->displayed_count = 0;
1835 /* Iterate through the list of frames. Call a routine for each frame
1836 to check whether it should be displayed and, if so, add it to
1837 the display list. */
1838 nstime_set_unset(&first_ts);
1843 /* Update the progress bar when it gets to this value. */
1844 progbar_nextstep = 0;
1845 /* When we reach the value that triggers a progress bar update,
1846 bump that value by this amount. */
1847 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
1848 /* Count of packets at which we've looked. */
1850 /* Progress so far. */
1854 g_get_current_time(&start_time);
1856 /* no previous row yet */
1857 prev_frame_num = -1;
1860 preceding_frame_num = -1;
1861 preceding_frame = NULL;
1862 following_frame_num = -1;
1863 following_frame = NULL;
1865 selected_frame_seen = FALSE;
1867 for (framenum = 1; framenum <= cf->count; framenum++) {
1868 fdata = frame_data_sequence_find(cf->frames, framenum);
1870 /* Create the progress bar if necessary.
1871 We check on every iteration of the loop, so that it takes no
1872 longer than the standard time to create it (otherwise, for a
1873 large file, we might take considerably longer than that standard
1874 time in order to get to the next progress bar step). */
1875 if (progbar == NULL)
1876 progbar = delayed_create_progress_dlg(cf->window, action, action_item, TRUE,
1877 &stop_flag, &start_time,
1880 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
1881 when we update it, we have to run the GTK+ main loop to get it
1882 to repaint what's pending, and doing so may involve an "ioctl()"
1883 to see if there's any pending input from an X server, and doing
1884 that for every packet can be costly, especially on a big file. */
1885 if (count >= progbar_nextstep) {
1886 /* let's not divide by zero. I should never be started
1887 * with count == 0, so let's assert that
1889 g_assert(cf->count > 0);
1890 progbar_val = (gfloat) count / cf->count;
1892 if (progbar != NULL) {
1893 g_snprintf(status_str, sizeof(status_str),
1894 "%4u of %u frames", count, cf->count);
1895 update_progress_dlg(progbar, progbar_val, status_str);
1898 progbar_nextstep += progbar_quantum;
1902 /* Well, the user decided to abort the filtering. Just stop.
1904 XXX - go back to the previous filter? Users probably just
1905 want not to wait for a filtering operation to finish;
1906 unless we cancel by having no filter, reverting to the
1907 previous filter will probably be even more expensive than
1908 continuing the filtering, as it involves going back to the
1909 beginning and filtering, and even with no filter we currently
1910 have to re-generate the entire clist, which is also expensive.
1912 I'm not sure what Network Monitor does, but it doesn't appear
1913 to give you an unfiltered display if you cancel. */
1920 /* Since all state for the frame was destroyed, mark the frame
1921 * as not visited, free the GSList referring to the state
1922 * data (the per-frame data itself was freed by
1923 * "init_dissection()"), and null out the GSList pointer. */
1924 fdata->flags.visited = 0;
1925 frame_data_cleanup(fdata);
1928 if (redissect || refilter) {
1929 /* If we're redissecting or refiltering then any frame dependencies
1930 * from the previous dissection/filtering are no longer valid.
1932 fdata->flags.dependent_of_displayed = 0;
1935 if (!cf_read_frame(cf, fdata))
1936 break; /* error reading the frame */
1938 /* If the previous frame is displayed, and we haven't yet seen the
1939 selected frame, remember that frame - it's the closest one we've
1940 yet seen before the selected frame. */
1941 if (prev_frame_num != -1 && !selected_frame_seen && prev_frame->flags.passed_dfilter) {
1942 preceding_frame_num = prev_frame_num;
1943 preceding_frame = prev_frame;
1945 add_packet_to_packet_list(fdata, cf, dfcode, filtering_tap_listeners,
1946 tap_flags, &cf->pseudo_header, cf->pd,
1948 add_to_packet_list);
1950 /* If this frame is displayed, and this is the first frame we've
1951 seen displayed after the selected frame, remember this frame -
1952 it's the closest one we've yet seen at or after the selected
1954 if (fdata->flags.passed_dfilter && selected_frame_seen && following_frame_num == -1) {
1955 following_frame_num = fdata->num;
1956 following_frame = fdata;
1958 if (fdata == selected_frame) {
1959 selected_frame_seen = TRUE;
1960 if (fdata->flags.passed_dfilter)
1961 selected_frame_num = fdata->num;
1964 /* Remember this frame - it'll be the previous frame
1965 on the next pass through the loop. */
1966 prev_frame_num = fdata->num;
1970 /* We are done redissecting the packet list. */
1971 cf->redissecting = FALSE;
1974 /* Clear out what remains of the visited flags and per-frame data
1977 XXX - that may cause various forms of bogosity when dissecting
1978 these frames, as they won't have been seen by this sequential
1979 pass, but the only alternative I see is to keep scanning them
1980 even though the user requested that the scan stop, and that
1981 would leave the user stuck with an Wireshark grinding on
1982 until it finishes. Should we just stick them with that? */
1983 for (; framenum <= cf->count; framenum++) {
1984 fdata = frame_data_sequence_find(cf->frames, framenum);
1985 fdata->flags.visited = 0;
1986 frame_data_cleanup(fdata);
1990 /* We're done filtering the packets; destroy the progress bar if it
1992 if (progbar != NULL)
1993 destroy_progress_dlg(progbar);
1995 /* Unfreeze the packet list. */
1996 if (!add_to_packet_list)
1997 packet_list_recreate_visible_rows();
1999 /* Compute the time it took to filter the file */
2000 compute_elapsed(&start_time);
2004 if (selected_frame_num == -1) {
2005 /* The selected frame didn't pass the filter. */
2006 if (selected_frame == NULL) {
2007 /* That's because there *was* no selected frame. Make the first
2008 displayed frame the current frame. */
2009 selected_frame_num = 0;
2011 /* Find the nearest displayed frame to the selected frame (whether
2012 it's before or after that frame) and make that the current frame.
2013 If the next and previous displayed frames are equidistant from the
2014 selected frame, choose the next one. */
2015 g_assert(following_frame == NULL ||
2016 following_frame->num >= selected_frame->num);
2017 g_assert(preceding_frame == NULL ||
2018 preceding_frame->num <= selected_frame->num);
2019 if (following_frame == NULL) {
2020 /* No frame after the selected frame passed the filter, so we
2021 have to select the last displayed frame before the selected
2023 selected_frame_num = preceding_frame_num;
2024 selected_frame = preceding_frame;
2025 } else if (preceding_frame == NULL) {
2026 /* No frame before the selected frame passed the filter, so we
2027 have to select the first displayed frame after the selected
2029 selected_frame_num = following_frame_num;
2030 selected_frame = following_frame;
2032 /* Frames before and after the selected frame passed the filter, so
2033 we'll select the previous frame */
2034 selected_frame_num = preceding_frame_num;
2035 selected_frame = preceding_frame;
2040 if (selected_frame_num == -1) {
2041 /* There are no frames displayed at all. */
2042 cf_unselect_packet(cf);
2044 /* Either the frame that was selected passed the filter, or we've
2045 found the nearest displayed frame to that frame. Select it, make
2046 it the focus row, and make it visible. */
2047 /* Set to invalid to force update of packet list and packet details */
2048 cf->current_row = -1;
2049 if (selected_frame_num == 0) {
2050 packet_list_select_first_row();
2052 if (!packet_list_select_row_from_data(selected_frame)) {
2053 /* We didn't find a row corresponding to this frame.
2054 This means that the frame isn't being displayed currently,
2055 so we can't select it. */
2056 simple_message_box(ESD_TYPE_INFO, NULL,
2057 "The capture file is probably not fully dissected.",
2058 "End of capture exceeded!");
2063 /* Cleanup and release all dfilter resources */
2064 dfilter_free(dfcode);
2069 * Scan trough all frame data and recalculate the ref time
2070 * without rereading the file.
2071 * XXX - do we need a progres bar or is this fast enough?
2074 ref_time_packets(capture_file *cf)
2079 nstime_set_unset(&first_ts);
2083 for (framenum = 1; framenum <= cf->count; framenum++) {
2084 fdata = frame_data_sequence_find(cf->frames, framenum);
2086 /* just add some value here until we know if it is being displayed or not */
2087 fdata->cum_bytes = cum_bytes + fdata->pkt_len;
2093 /* If we don't have the time stamp of the first packet in the
2094 capture, it's because this is the first packet. Save the time
2095 stamp of this packet as the time stamp of the first packet. */
2096 if (nstime_is_unset(&first_ts)) {
2097 first_ts = fdata->abs_ts;
2099 /* if this frames is marked as a reference time frame, reset
2100 firstsec and firstusec to this frame */
2101 if (fdata->flags.ref_time) {
2102 first_ts = fdata->abs_ts;
2105 /* If we don't have the time stamp of the previous displayed packet,
2106 it's because this is the first displayed packet. Save the time
2107 stamp of this packet as the time stamp of the previous displayed
2109 if (prev_dis == NULL) {
2113 /* Get the time elapsed between the first packet and this packet. */
2114 nstime_delta(&fdata->rel_ts, &fdata->abs_ts, &first_ts);
2116 /* If it's greater than the current elapsed time, set the elapsed time
2117 to it (we check for "greater than" so as not to be confused by
2118 time moving backwards). */
2119 if ((gint32)cf->elapsed_time.secs < fdata->rel_ts.secs
2120 || ((gint32)cf->elapsed_time.secs == fdata->rel_ts.secs && (gint32)cf->elapsed_time.nsecs < fdata->rel_ts.nsecs)) {
2121 cf->elapsed_time = fdata->rel_ts;
2124 /* If this frame is displayed, get the time elapsed between the
2125 previous displayed packet and this packet. */
2126 if ( fdata->flags.passed_dfilter ) {
2127 fdata->prev_dis = prev_dis;
2134 if ( (fdata->flags.passed_dfilter) || (fdata->flags.ref_time) ) {
2135 /* This frame either passed the display filter list or is marked as
2136 a time reference frame. All time reference frames are displayed
2137 even if they dont pass the display filter */
2138 if (fdata->flags.ref_time) {
2139 /* if this was a TIME REF frame we should reset the cum_bytes field */
2140 cum_bytes = fdata->pkt_len;
2141 fdata->cum_bytes = cum_bytes;
2143 /* increase cum_bytes with this packets length */
2144 cum_bytes += fdata->pkt_len;
2157 process_specified_packets(capture_file *cf, packet_range_t *range,
2158 const char *string1, const char *string2, gboolean terminate_is_stop,
2159 gboolean (*callback)(capture_file *, frame_data *,
2160 union wtap_pseudo_header *, const guint8 *, void *),
2161 void *callback_args)
2163 union wtap_pseudo_header pseudo_header;
2167 guint8 pd[WTAP_MAX_PACKET_SIZE+1];
2168 psp_return_t ret = PSP_FINISHED;
2170 progdlg_t *progbar = NULL;
2173 gboolean progbar_stop_flag;
2174 GTimeVal progbar_start_time;
2175 gchar progbar_status_str[100];
2176 int progbar_nextstep;
2177 int progbar_quantum;
2178 range_process_e process_this;
2180 /* Update the progress bar when it gets to this value. */
2181 progbar_nextstep = 0;
2182 /* When we reach the value that triggers a progress bar update,
2183 bump that value by this amount. */
2184 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
2185 /* Count of packets at which we've looked. */
2187 /* Progress so far. */
2190 progbar_stop_flag = FALSE;
2191 g_get_current_time(&progbar_start_time);
2194 packet_range_process_init(range);
2196 /* Iterate through all the packets, printing the packets that
2197 were selected by the current display filter. */
2198 for (framenum = 1; framenum <= cf->count; framenum++) {
2199 fdata = frame_data_sequence_find(cf->frames, framenum);
2201 /* Create the progress bar if necessary.
2202 We check on every iteration of the loop, so that it takes no
2203 longer than the standard time to create it (otherwise, for a
2204 large file, we might take considerably longer than that standard
2205 time in order to get to the next progress bar step). */
2206 if (progbar == NULL)
2207 progbar = delayed_create_progress_dlg(cf->window, string1, string2,
2210 &progbar_start_time,
2213 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
2214 when we update it, we have to run the GTK+ main loop to get it
2215 to repaint what's pending, and doing so may involve an "ioctl()"
2216 to see if there's any pending input from an X server, and doing
2217 that for every packet can be costly, especially on a big file. */
2218 if (progbar_count >= progbar_nextstep) {
2219 /* let's not divide by zero. I should never be started
2220 * with count == 0, so let's assert that
2222 g_assert(cf->count > 0);
2223 progbar_val = (gfloat) progbar_count / cf->count;
2225 if (progbar != NULL) {
2226 g_snprintf(progbar_status_str, sizeof(progbar_status_str),
2227 "%4u of %u packets", progbar_count, cf->count);
2228 update_progress_dlg(progbar, progbar_val, progbar_status_str);
2231 progbar_nextstep += progbar_quantum;
2234 if (progbar_stop_flag) {
2235 /* Well, the user decided to abort the operation. Just stop,
2236 and arrange to return PSP_STOPPED to our caller, so they know
2237 it was stopped explicitly. */
2244 if (range != NULL) {
2245 /* do we have to process this packet? */
2246 process_this = packet_range_process_packet(range, fdata);
2247 if (process_this == range_process_next) {
2248 /* this packet uninteresting, continue with next one */
2250 } else if (process_this == range_processing_finished) {
2251 /* all interesting packets processed, stop the loop */
2256 /* Get the packet */
2257 if (!cf_read_frame_r(cf, fdata, &pseudo_header, pd)) {
2258 /* Attempt to get the packet failed. */
2262 /* Process the packet */
2263 if (!callback(cf, fdata, &pseudo_header, pd, callback_args)) {
2264 /* Callback failed. We assume it reported the error appropriately. */
2270 /* We're done printing the packets; destroy the progress bar if
2272 if (progbar != NULL)
2273 destroy_progress_dlg(progbar);
2279 gboolean construct_protocol_tree;
2281 } retap_callback_args_t;
2284 retap_packet(capture_file *cf _U_, frame_data *fdata,
2285 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2288 retap_callback_args_t *args = argsp;
2291 epan_dissect_init(&edt, args->construct_protocol_tree, FALSE);
2292 tap_queue_init(&edt);
2293 epan_dissect_run(&edt, pseudo_header, pd, fdata, args->cinfo);
2294 tap_push_tapped_queue(&edt);
2295 epan_dissect_cleanup(&edt);
2301 cf_retap_packets(capture_file *cf)
2303 packet_range_t range;
2304 retap_callback_args_t callback_args;
2305 gboolean filtering_tap_listeners;
2308 /* Do we have any tap listeners with filters? */
2309 filtering_tap_listeners = have_filtering_tap_listeners();
2311 tap_flags = union_of_tap_listener_flags();
2313 /* If any tap listeners have filters, or require the protocol tree,
2314 construct the protocol tree. */
2315 callback_args.construct_protocol_tree = filtering_tap_listeners ||
2316 (tap_flags & TL_REQUIRES_PROTO_TREE);
2318 /* If any tap listeners require the columns, construct them. */
2319 callback_args.cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
2321 /* Reset the tap listeners. */
2322 reset_tap_listeners();
2324 /* Iterate through the list of packets, dissecting all packets and
2325 re-running the taps. */
2326 packet_range_init(&range);
2327 packet_range_process_init(&range);
2328 switch (process_specified_packets(cf, &range, "Recalculating statistics on",
2329 "all packets", TRUE, retap_packet,
2332 /* Completed successfully. */
2336 /* Well, the user decided to abort the refiltering.
2337 Return CF_READ_ABORTED so our caller knows they did that. */
2338 return CF_READ_ABORTED;
2341 /* Error while retapping. */
2342 return CF_READ_ERROR;
2345 g_assert_not_reached();
2350 print_args_t *print_args;
2351 gboolean print_header_line;
2352 char *header_line_buf;
2353 int header_line_buf_len;
2354 gboolean print_formfeed;
2355 gboolean print_separator;
2359 int num_visible_cols;
2361 } print_callback_args_t;
2364 print_packet(capture_file *cf, frame_data *fdata,
2365 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2368 print_callback_args_t *args = argsp;
2375 gboolean proto_tree_needed;
2376 char bookmark_name[9+10+1]; /* "__frameNNNNNNNNNN__\0" */
2377 char bookmark_title[6+10+1]; /* "Frame NNNNNNNNNN__\0" */
2379 /* Create the protocol tree, and make it visible, if we're printing
2380 the dissection or the hex data.
2381 XXX - do we need it if we're just printing the hex data? */
2383 args->print_args->print_dissections != print_dissections_none || args->print_args->print_hex || have_custom_cols(&cf->cinfo);
2384 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2386 /* Fill in the column information if we're printing the summary
2388 if (args->print_args->print_summary) {
2389 col_custom_prime_edt(&edt, &cf->cinfo);
2390 epan_dissect_run(&edt, pseudo_header, pd, fdata, &cf->cinfo);
2391 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2393 epan_dissect_run(&edt, pseudo_header, pd, fdata, NULL);
2395 if (args->print_formfeed) {
2396 if (!new_page(args->print_args->stream))
2399 if (args->print_separator) {
2400 if (!print_line(args->print_args->stream, 0, ""))
2406 * We generate bookmarks, if the output format supports them.
2407 * The name is "__frameN__".
2409 g_snprintf(bookmark_name, sizeof bookmark_name, "__frame%u__", fdata->num);
2411 if (args->print_args->print_summary) {
2412 if (args->print_header_line) {
2413 if (!print_line(args->print_args->stream, 0, args->header_line_buf))
2415 args->print_header_line = FALSE; /* we might not need to print any more */
2417 cp = &args->line_buf[0];
2419 for (i = 0; i < args->num_visible_cols; i++) {
2420 /* Find the length of the string for this column. */
2421 column_len = (int) strlen(cf->cinfo.col_data[args->visible_cols[i]]);
2422 if (args->col_widths[i] > column_len)
2423 column_len = args->col_widths[i];
2425 /* Make sure there's room in the line buffer for the column; if not,
2426 double its length. */
2427 line_len += column_len + 1; /* "+1" for space */
2428 if (line_len > args->line_buf_len) {
2429 cp_off = (int) (cp - args->line_buf);
2430 args->line_buf_len = 2 * line_len;
2431 args->line_buf = g_realloc(args->line_buf, args->line_buf_len + 1);
2432 cp = args->line_buf + cp_off;
2435 /* Right-justify the packet number column. */
2436 if (cf->cinfo.col_fmt[args->visible_cols[i]] == COL_NUMBER)
2437 g_snprintf(cp, column_len+1, "%*s", args->col_widths[i], cf->cinfo.col_data[args->visible_cols[i]]);
2439 g_snprintf(cp, column_len+1, "%-*s", args->col_widths[i], cf->cinfo.col_data[args->visible_cols[i]]);
2441 if (i != args->num_visible_cols - 1)
2447 * Generate a bookmark, using the summary line as the title.
2449 if (!print_bookmark(args->print_args->stream, bookmark_name,
2453 if (!print_line(args->print_args->stream, 0, args->line_buf))
2457 * Generate a bookmark, using "Frame N" as the title, as we're not
2458 * printing the summary line.
2460 g_snprintf(bookmark_title, sizeof bookmark_title, "Frame %u", fdata->num);
2461 if (!print_bookmark(args->print_args->stream, bookmark_name,
2464 } /* if (print_summary) */
2466 if (args->print_args->print_dissections != print_dissections_none) {
2467 if (args->print_args->print_summary) {
2468 /* Separate the summary line from the tree with a blank line. */
2469 if (!print_line(args->print_args->stream, 0, ""))
2473 /* Print the information in that tree. */
2474 if (!proto_tree_print(args->print_args, &edt, args->print_args->stream))
2477 /* Print a blank line if we print anything after this (aka more than one packet). */
2478 args->print_separator = TRUE;
2480 /* Print a header line if we print any more packet summaries */
2481 args->print_header_line = TRUE;
2484 if (args->print_args->print_hex) {
2485 /* Print the full packet data as hex. */
2486 if (!print_hex_data(args->print_args->stream, &edt))
2489 /* Print a blank line if we print anything after this (aka more than one packet). */
2490 args->print_separator = TRUE;
2492 /* Print a header line if we print any more packet summaries */
2493 args->print_header_line = TRUE;
2494 } /* if (args->print_args->print_dissections != print_dissections_none) */
2496 epan_dissect_cleanup(&edt);
2498 /* do we want to have a formfeed between each packet from now on? */
2499 if (args->print_args->print_formfeed) {
2500 args->print_formfeed = TRUE;
2506 epan_dissect_cleanup(&edt);
2511 cf_print_packets(capture_file *cf, print_args_t *print_args)
2513 print_callback_args_t callback_args;
2516 int i, cp_off, column_len, line_len;
2517 int num_visible_col = 0, last_visible_col = 0, visible_col_count;
2522 callback_args.print_args = print_args;
2523 callback_args.print_header_line = TRUE;
2524 callback_args.header_line_buf = NULL;
2525 callback_args.header_line_buf_len = 256;
2526 callback_args.print_formfeed = FALSE;
2527 callback_args.print_separator = FALSE;
2528 callback_args.line_buf = NULL;
2529 callback_args.line_buf_len = 256;
2530 callback_args.col_widths = NULL;
2531 callback_args.num_visible_cols = 0;
2532 callback_args.visible_cols = NULL;
2534 if (!print_preamble(print_args->stream, cf->filename)) {
2535 destroy_print_stream(print_args->stream);
2536 return CF_PRINT_WRITE_ERROR;
2539 if (print_args->print_summary) {
2540 /* We're printing packet summaries. Allocate the header line buffer
2541 and get the column widths. */
2542 callback_args.header_line_buf = g_malloc(callback_args.header_line_buf_len + 1);
2544 /* Find the number of visible columns and the last visible column */
2545 for (i = 0; i < prefs.num_cols; i++) {
2547 clp = g_list_nth(prefs.col_list, i);
2548 if (clp == NULL) /* Sanity check, Invalid column requested */
2551 cfmt = (fmt_data *) clp->data;
2552 if (cfmt->visible) {
2554 last_visible_col = i;
2558 /* Find the widths for each of the columns - maximum of the
2559 width of the title and the width of the data - and construct
2560 a buffer with a line containing the column titles. */
2561 callback_args.num_visible_cols = num_visible_col;
2562 callback_args.col_widths = (gint *) g_malloc(sizeof(gint) * num_visible_col);
2563 callback_args.visible_cols = (gint *) g_malloc(sizeof(gint) * num_visible_col);
2564 cp = &callback_args.header_line_buf[0];
2566 visible_col_count = 0;
2567 for (i = 0; i < cf->cinfo.num_cols; i++) {
2569 clp = g_list_nth(prefs.col_list, i);
2570 if (clp == NULL) /* Sanity check, Invalid column requested */
2573 cfmt = (fmt_data *) clp->data;
2574 if (cfmt->visible == FALSE)
2577 /* Save the order of visible columns */
2578 callback_args.visible_cols[visible_col_count] = i;
2580 /* Don't pad the last column. */
2581 if (i == last_visible_col)
2582 callback_args.col_widths[visible_col_count] = 0;
2584 callback_args.col_widths[visible_col_count] = (gint) strlen(cf->cinfo.col_title[i]);
2585 data_width = get_column_char_width(get_column_format(i));
2586 if (data_width > callback_args.col_widths[visible_col_count])
2587 callback_args.col_widths[visible_col_count] = data_width;
2590 /* Find the length of the string for this column. */
2591 column_len = (int) strlen(cf->cinfo.col_title[i]);
2592 if (callback_args.col_widths[i] > column_len)
2593 column_len = callback_args.col_widths[visible_col_count];
2595 /* Make sure there's room in the line buffer for the column; if not,
2596 double its length. */
2597 line_len += column_len + 1; /* "+1" for space */
2598 if (line_len > callback_args.header_line_buf_len) {
2599 cp_off = (int) (cp - callback_args.header_line_buf);
2600 callback_args.header_line_buf_len = 2 * line_len;
2601 callback_args.header_line_buf = g_realloc(callback_args.header_line_buf,
2602 callback_args.header_line_buf_len + 1);
2603 cp = callback_args.header_line_buf + cp_off;
2606 /* Right-justify the packet number column. */
2607 /* if (cf->cinfo.col_fmt[i] == COL_NUMBER)
2608 g_snprintf(cp, column_len+1, "%*s", callback_args.col_widths[visible_col_count], cf->cinfo.col_title[i]);
2610 g_snprintf(cp, column_len+1, "%-*s", callback_args.col_widths[visible_col_count], cf->cinfo.col_title[i]);
2612 if (i != cf->cinfo.num_cols - 1)
2615 visible_col_count++;
2619 /* Now start out the main line buffer with the same length as the
2620 header line buffer. */
2621 callback_args.line_buf_len = callback_args.header_line_buf_len;
2622 callback_args.line_buf = g_malloc(callback_args.line_buf_len + 1);
2623 } /* if (print_summary) */
2625 /* Iterate through the list of packets, printing the packets we were
2627 ret = process_specified_packets(cf, &print_args->range, "Printing",
2628 "selected packets", TRUE, print_packet,
2631 g_free(callback_args.header_line_buf);
2632 g_free(callback_args.line_buf);
2633 g_free(callback_args.col_widths);
2634 g_free(callback_args.visible_cols);
2639 /* Completed successfully. */
2643 /* Well, the user decided to abort the printing.
2645 XXX - note that what got generated before they did that
2646 will get printed if we're piping to a print program; we'd
2647 have to write to a file and then hand that to the print
2648 program to make it actually not print anything. */
2652 /* Error while printing.
2654 XXX - note that what got generated before they did that
2655 will get printed if we're piping to a print program; we'd
2656 have to write to a file and then hand that to the print
2657 program to make it actually not print anything. */
2658 destroy_print_stream(print_args->stream);
2659 return CF_PRINT_WRITE_ERROR;
2662 if (!print_finale(print_args->stream)) {
2663 destroy_print_stream(print_args->stream);
2664 return CF_PRINT_WRITE_ERROR;
2667 if (!destroy_print_stream(print_args->stream))
2668 return CF_PRINT_WRITE_ERROR;
2674 write_pdml_packet(capture_file *cf _U_, frame_data *fdata,
2675 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2681 /* Create the protocol tree, but don't fill in the column information. */
2682 epan_dissect_init(&edt, TRUE, TRUE);
2683 epan_dissect_run(&edt, pseudo_header, pd, fdata, NULL);
2685 /* Write out the information in that tree. */
2686 proto_tree_write_pdml(&edt, fh);
2688 epan_dissect_cleanup(&edt);
2694 cf_write_pdml_packets(capture_file *cf, print_args_t *print_args)
2699 fh = ws_fopen(print_args->file, "w");
2701 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2703 write_pdml_preamble(fh, cf->filename);
2706 return CF_PRINT_WRITE_ERROR;
2709 /* Iterate through the list of packets, printing the packets we were
2711 ret = process_specified_packets(cf, &print_args->range, "Writing PDML",
2712 "selected packets", TRUE,
2713 write_pdml_packet, fh);
2718 /* Completed successfully. */
2722 /* Well, the user decided to abort the printing. */
2726 /* Error while printing. */
2728 return CF_PRINT_WRITE_ERROR;
2731 write_pdml_finale(fh);
2734 return CF_PRINT_WRITE_ERROR;
2737 /* XXX - check for an error */
2744 write_psml_packet(capture_file *cf, frame_data *fdata,
2745 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2750 gboolean proto_tree_needed;
2752 /* Fill in the column information, only create the protocol tree
2753 if having custom columns. */
2754 proto_tree_needed = have_custom_cols(&cf->cinfo);
2755 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2756 col_custom_prime_edt(&edt, &cf->cinfo);
2757 epan_dissect_run(&edt, pseudo_header, pd, fdata, &cf->cinfo);
2758 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2760 /* Write out the information in that tree. */
2761 proto_tree_write_psml(&edt, fh);
2763 epan_dissect_cleanup(&edt);
2769 cf_write_psml_packets(capture_file *cf, print_args_t *print_args)
2774 fh = ws_fopen(print_args->file, "w");
2776 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2778 write_psml_preamble(fh);
2781 return CF_PRINT_WRITE_ERROR;
2784 /* Iterate through the list of packets, printing the packets we were
2786 ret = process_specified_packets(cf, &print_args->range, "Writing PSML",
2787 "selected packets", TRUE,
2788 write_psml_packet, fh);
2793 /* Completed successfully. */
2797 /* Well, the user decided to abort the printing. */
2801 /* Error while printing. */
2803 return CF_PRINT_WRITE_ERROR;
2806 write_psml_finale(fh);
2809 return CF_PRINT_WRITE_ERROR;
2812 /* XXX - check for an error */
2819 write_csv_packet(capture_file *cf, frame_data *fdata,
2820 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2825 gboolean proto_tree_needed;
2827 /* Fill in the column information, only create the protocol tree
2828 if having custom columns. */
2829 proto_tree_needed = have_custom_cols(&cf->cinfo);
2830 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2831 col_custom_prime_edt(&edt, &cf->cinfo);
2832 epan_dissect_run(&edt, pseudo_header, pd, fdata, &cf->cinfo);
2833 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2835 /* Write out the information in that tree. */
2836 proto_tree_write_csv(&edt, fh);
2838 epan_dissect_cleanup(&edt);
2844 cf_write_csv_packets(capture_file *cf, print_args_t *print_args)
2849 fh = ws_fopen(print_args->file, "w");
2851 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2853 write_csv_preamble(fh);
2856 return CF_PRINT_WRITE_ERROR;
2859 /* Iterate through the list of packets, printing the packets we were
2861 ret = process_specified_packets(cf, &print_args->range, "Writing CSV",
2862 "selected packets", TRUE,
2863 write_csv_packet, fh);
2868 /* Completed successfully. */
2872 /* Well, the user decided to abort the printing. */
2876 /* Error while printing. */
2878 return CF_PRINT_WRITE_ERROR;
2881 write_csv_finale(fh);
2884 return CF_PRINT_WRITE_ERROR;
2887 /* XXX - check for an error */
2894 write_carrays_packet(capture_file *cf _U_, frame_data *fdata,
2895 union wtap_pseudo_header *pseudo_header,
2896 const guint8 *pd, void *argsp)
2901 epan_dissect_init(&edt, TRUE, TRUE);
2902 epan_dissect_run(&edt, pseudo_header, pd, fdata, NULL);
2903 proto_tree_write_carrays(fdata->num, fh, &edt);
2904 epan_dissect_cleanup(&edt);
2910 cf_write_carrays_packets(capture_file *cf, print_args_t *print_args)
2915 fh = ws_fopen(print_args->file, "w");
2918 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2920 write_carrays_preamble(fh);
2924 return CF_PRINT_WRITE_ERROR;
2927 /* Iterate through the list of packets, printing the packets we were
2929 ret = process_specified_packets(cf, &print_args->range,
2931 "selected packets", TRUE,
2932 write_carrays_packet, fh);
2935 /* Completed successfully. */
2938 /* Well, the user decided to abort the printing. */
2941 /* Error while printing. */
2943 return CF_PRINT_WRITE_ERROR;
2946 write_carrays_finale(fh);
2950 return CF_PRINT_WRITE_ERROR;
2958 cf_find_packet_protocol_tree(capture_file *cf, const char *string,
2959 search_direction dir)
2963 mdata.string = string;
2964 mdata.string_len = strlen(string);
2965 return find_packet(cf, match_protocol_tree, &mdata, dir);
2969 cf_find_string_protocol_tree(capture_file *cf, proto_tree *tree, match_data *mdata)
2971 mdata->frame_matched = FALSE;
2972 mdata->string = convert_string_case(cf->sfilter, cf->case_type);
2973 mdata->string_len = strlen(mdata->string);
2975 /* Iterate through all the nodes looking for matching text */
2976 proto_tree_children_foreach(tree, match_subtree_text, mdata);
2977 return mdata->frame_matched ? MR_MATCHED : MR_NOTMATCHED;
2981 match_protocol_tree(capture_file *cf, frame_data *fdata, void *criterion)
2983 match_data *mdata = criterion;
2986 /* Load the frame's data. */
2987 if (!cf_read_frame(cf, fdata)) {
2988 /* Attempt to get the packet failed. */
2992 /* Construct the protocol tree, including the displayed text */
2993 epan_dissect_init(&edt, TRUE, TRUE);
2994 /* We don't need the column information */
2995 epan_dissect_run(&edt, &cf->pseudo_header, cf->pd, fdata, NULL);
2997 /* Iterate through all the nodes, seeing if they have text that matches. */
2999 mdata->frame_matched = FALSE;
3000 proto_tree_children_foreach(edt.tree, match_subtree_text, mdata);
3001 epan_dissect_cleanup(&edt);
3002 return mdata->frame_matched ? MR_MATCHED : MR_NOTMATCHED;
3006 match_subtree_text(proto_node *node, gpointer data)
3008 match_data *mdata = (match_data *) data;
3009 const gchar *string = mdata->string;
3010 size_t string_len = mdata->string_len;
3011 capture_file *cf = mdata->cf;
3012 field_info *fi = PNODE_FINFO(node);
3013 gchar label_str[ITEM_LABEL_LENGTH];
3020 /* dissection with an invisible proto tree? */
3023 if (mdata->frame_matched) {
3024 /* We already had a match; don't bother doing any more work. */
3028 /* Don't match invisible entries. */
3029 if (PROTO_ITEM_IS_HIDDEN(node))
3032 /* was a free format label produced? */
3034 label_ptr = fi->rep->representation;
3036 /* no, make a generic label */
3037 label_ptr = label_str;
3038 proto_item_fill_label(fi, label_str);
3041 /* Does that label match? */
3042 label_len = strlen(label_ptr);
3043 for (i = 0; i < label_len; i++) {
3044 c_char = label_ptr[i];
3046 c_char = toupper(c_char);
3047 if (c_char == string[c_match]) {
3049 if (c_match == string_len) {
3050 /* No need to look further; we have a match */
3051 mdata->frame_matched = TRUE;
3059 /* Recurse into the subtree, if it exists */
3060 if (node->first_child != NULL)
3061 proto_tree_children_foreach(node, match_subtree_text, mdata);
3065 cf_find_packet_summary_line(capture_file *cf, const char *string,
3066 search_direction dir)
3070 mdata.string = string;
3071 mdata.string_len = strlen(string);
3072 return find_packet(cf, match_summary_line, &mdata, dir);
3076 match_summary_line(capture_file *cf, frame_data *fdata, void *criterion)
3078 match_data *mdata = criterion;
3079 const gchar *string = mdata->string;
3080 size_t string_len = mdata->string_len;
3082 const char *info_column;
3083 size_t info_column_len;
3084 match_result result = MR_NOTMATCHED;
3090 /* Load the frame's data. */
3091 if (!cf_read_frame(cf, fdata)) {
3092 /* Attempt to get the packet failed. */
3096 /* Don't bother constructing the protocol tree */
3097 epan_dissect_init(&edt, FALSE, FALSE);
3098 /* Get the column information */
3099 epan_dissect_run(&edt, &cf->pseudo_header, cf->pd, fdata, &cf->cinfo);
3101 /* Find the Info column */
3102 for (colx = 0; colx < cf->cinfo.num_cols; colx++) {
3103 if (cf->cinfo.fmt_matx[colx][COL_INFO]) {
3104 /* Found it. See if we match. */
3105 info_column = edt.pi.cinfo->col_data[colx];
3106 info_column_len = strlen(info_column);
3107 for (i = 0; i < info_column_len; i++) {
3108 c_char = info_column[i];
3110 c_char = toupper(c_char);
3111 if (c_char == string[c_match]) {
3113 if (c_match == string_len) {
3114 result = MR_MATCHED;
3123 epan_dissect_cleanup(&edt);
3130 } cbs_t; /* "Counted byte string" */
3133 cf_find_packet_data(capture_file *cf, const guint8 *string, size_t string_size,
3134 search_direction dir)
3139 info.data_len = string_size;
3141 /* String or hex search? */
3143 /* String search - what type of string? */
3144 switch (cf->scs_type) {
3146 case SCS_ASCII_AND_UNICODE:
3147 return find_packet(cf, match_ascii_and_unicode, &info, dir);
3150 return find_packet(cf, match_ascii, &info, dir);
3153 return find_packet(cf, match_unicode, &info, dir);
3156 g_assert_not_reached();
3160 return find_packet(cf, match_binary, &info, dir);
3164 match_ascii_and_unicode(capture_file *cf, frame_data *fdata, void *criterion)
3166 cbs_t *info = criterion;
3167 const guint8 *ascii_text = info->data;
3168 size_t textlen = info->data_len;
3169 match_result result;
3175 /* Load the frame's data. */
3176 if (!cf_read_frame(cf, fdata)) {
3177 /* Attempt to get the packet failed. */
3181 result = MR_NOTMATCHED;
3182 buf_len = fdata->pkt_len;
3184 while (i < buf_len) {
3187 c_char = toupper(c_char);
3188 if (c_char != '\0') {
3189 if (c_char == ascii_text[c_match]) {
3191 if (c_match == textlen) {
3192 result = MR_MATCHED;
3193 cf->search_pos = i; /* Save the position of the last character
3194 for highlighting the field. */
3199 g_assert(i>=c_match);
3200 i -= (guint32)c_match;
3210 match_ascii(capture_file *cf, frame_data *fdata, void *criterion)
3212 cbs_t *info = criterion;
3213 const guint8 *ascii_text = info->data;
3214 size_t textlen = info->data_len;
3215 match_result result;
3221 /* Load the frame's data. */
3222 if (!cf_read_frame(cf, fdata)) {
3223 /* Attempt to get the packet failed. */
3227 result = MR_NOTMATCHED;
3228 buf_len = fdata->pkt_len;
3230 while (i < buf_len) {
3233 c_char = toupper(c_char);
3234 if (c_char == ascii_text[c_match]) {
3236 if (c_match == textlen) {
3237 result = MR_MATCHED;
3238 cf->search_pos = i; /* Save the position of the last character
3239 for highlighting the field. */
3244 g_assert(i>=c_match);
3245 i -= (guint32)c_match;
3255 match_unicode(capture_file *cf, frame_data *fdata, void *criterion)
3257 cbs_t *info = criterion;
3258 const guint8 *ascii_text = info->data;
3259 size_t textlen = info->data_len;
3260 match_result result;
3266 /* Load the frame's data. */
3267 if (!cf_read_frame(cf, fdata)) {
3268 /* Attempt to get the packet failed. */
3272 result = MR_NOTMATCHED;
3273 buf_len = fdata->pkt_len;
3275 while (i < buf_len) {
3278 c_char = toupper(c_char);
3279 if (c_char == ascii_text[c_match]) {
3281 if (c_match == textlen) {
3282 result = MR_MATCHED;
3283 cf->search_pos = i; /* Save the position of the last character
3284 for highlighting the field. */
3290 g_assert(i>=(c_match*2));
3291 i -= (guint32)c_match*2;
3300 match_binary(capture_file *cf, frame_data *fdata, void *criterion)
3302 cbs_t *info = criterion;
3303 const guint8 *binary_data = info->data;
3304 size_t datalen = info->data_len;
3305 match_result result;
3310 /* Load the frame's data. */
3311 if (!cf_read_frame(cf, fdata)) {
3312 /* Attempt to get the packet failed. */
3316 result = MR_NOTMATCHED;
3317 buf_len = fdata->pkt_len;
3319 while (i < buf_len) {
3320 if (cf->pd[i] == binary_data[c_match]) {
3322 if (c_match == datalen) {
3323 result = MR_MATCHED;
3324 cf->search_pos = i; /* Save the position of the last character
3325 for highlighting the field. */
3330 g_assert(i>=c_match);
3331 i -= (guint32)c_match;
3340 cf_find_packet_dfilter(capture_file *cf, dfilter_t *sfcode,
3341 search_direction dir)
3343 return find_packet(cf, match_dfilter, sfcode, dir);
3347 cf_find_packet_dfilter_string(capture_file *cf, const char *filter,
3348 search_direction dir)
3353 if (!dfilter_compile(filter, &sfcode)) {
3355 * XXX - this shouldn't happen, as the filter string is machine
3360 if (sfcode == NULL) {
3362 * XXX - this shouldn't happen, as the filter string is machine
3367 result = find_packet(cf, match_dfilter, sfcode, dir);
3368 dfilter_free(sfcode);
3373 match_dfilter(capture_file *cf, frame_data *fdata, void *criterion)
3375 dfilter_t *sfcode = criterion;
3377 match_result result;
3379 /* Load the frame's data. */
3380 if (!cf_read_frame(cf, fdata)) {
3381 /* Attempt to get the packet failed. */
3385 epan_dissect_init(&edt, TRUE, FALSE);
3386 epan_dissect_prime_dfilter(&edt, sfcode);
3387 epan_dissect_run(&edt, &cf->pseudo_header, cf->pd, fdata, NULL);
3388 result = dfilter_apply_edt(sfcode, &edt) ? MR_MATCHED : MR_NOTMATCHED;
3389 epan_dissect_cleanup(&edt);
3394 cf_find_packet_marked(capture_file *cf, search_direction dir)
3396 return find_packet(cf, match_marked, NULL, dir);
3400 match_marked(capture_file *cf _U_, frame_data *fdata, void *criterion _U_)
3402 return fdata->flags.marked ? MR_MATCHED : MR_NOTMATCHED;
3406 cf_find_packet_time_reference(capture_file *cf, search_direction dir)
3408 return find_packet(cf, match_time_reference, NULL, dir);
3412 match_time_reference(capture_file *cf _U_, frame_data *fdata, void *criterion _U_)
3414 return fdata->flags.ref_time ? MR_MATCHED : MR_NOTMATCHED;
3418 find_packet(capture_file *cf,
3419 match_result (*match_function)(capture_file *, frame_data *, void *),
3420 void *criterion, search_direction dir)
3422 frame_data *start_fd;
3425 frame_data *new_fd = NULL;
3426 progdlg_t *progbar = NULL;
3431 GTimeVal start_time;
3432 gchar status_str[100];
3433 int progbar_nextstep;
3434 int progbar_quantum;
3436 match_result result;
3438 start_fd = cf->current_frame;
3439 if (start_fd != NULL) {
3440 /* Iterate through the list of packets, starting at the packet we've
3441 picked, calling a routine to run the filter on the packet, see if
3442 it matches, and stop if so. */
3444 framenum = start_fd->num;
3446 /* Update the progress bar when it gets to this value. */
3447 progbar_nextstep = 0;
3448 /* When we reach the value that triggers a progress bar update,
3449 bump that value by this amount. */
3450 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
3451 /* Progress so far. */
3455 g_get_current_time(&start_time);
3457 title = cf->sfilter?cf->sfilter:"";
3459 /* Create the progress bar if necessary.
3460 We check on every iteration of the loop, so that it takes no
3461 longer than the standard time to create it (otherwise, for a
3462 large file, we might take considerably longer than that standard
3463 time in order to get to the next progress bar step). */
3464 if (progbar == NULL)
3465 progbar = delayed_create_progress_dlg(cf->window, "Searching", title,
3466 FALSE, &stop_flag, &start_time, progbar_val);
3468 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
3469 when we update it, we have to run the GTK+ main loop to get it
3470 to repaint what's pending, and doing so may involve an "ioctl()"
3471 to see if there's any pending input from an X server, and doing
3472 that for every packet can be costly, especially on a big file. */
3473 if (count >= progbar_nextstep) {
3474 /* let's not divide by zero. I should never be started
3475 * with count == 0, so let's assert that
3477 g_assert(cf->count > 0);
3479 progbar_val = (gfloat) count / cf->count;
3481 if (progbar != NULL) {
3482 g_snprintf(status_str, sizeof(status_str),
3483 "%4u of %u packets", count, cf->count);
3484 update_progress_dlg(progbar, progbar_val, status_str);
3487 progbar_nextstep += progbar_quantum;
3491 /* Well, the user decided to abort the search. Go back to the
3492 frame where we started. */
3497 /* Go past the current frame. */
3498 if (dir == SD_BACKWARD) {
3499 /* Go on to the previous frame. */
3500 if (framenum == 1) {
3502 * XXX - other apps have a bit more of a detailed message
3503 * for this, and instead of offering "OK" and "Cancel",
3504 * they offer things such as "Continue" and "Cancel";
3505 * we need an API for popping up alert boxes with
3506 * {Verb} and "Cancel".
3509 if (prefs.gui_find_wrap)
3511 statusbar_push_temporary_msg("Search reached the beginning. Continuing at end.");
3512 framenum = cf->count; /* wrap around */
3516 statusbar_push_temporary_msg("Search reached the beginning.");
3517 framenum = start_fd->num; /* stay on previous packet */
3522 /* Go on to the next frame. */
3523 if (framenum == cf->count) {
3524 if (prefs.gui_find_wrap)
3526 statusbar_push_temporary_msg("Search reached the end. Continuing at beginning.");
3527 framenum = 1; /* wrap around */
3531 statusbar_push_temporary_msg("Search reached the end.");
3532 framenum = start_fd->num; /* stay on previous packet */
3537 fdata = frame_data_sequence_find(cf->frames, framenum);
3541 /* Is this packet in the display? */
3542 if (fdata->flags.passed_dfilter) {
3543 /* Yes. Does it match the search criterion? */
3544 result = (*match_function)(cf, fdata, criterion);
3545 if (result == MR_ERROR) {
3546 /* Error; our caller has reported the error. Go back to the frame
3547 where we started. */
3550 } else if (result == MR_MATCHED) {
3551 /* Yes. Go to the new frame. */
3557 if (fdata == start_fd) {
3558 /* We're back to the frame we were on originally, and that frame
3559 doesn't match the search filter. The search failed. */
3564 /* We're done scanning the packets; destroy the progress bar if it
3566 if (progbar != NULL)
3567 destroy_progress_dlg(progbar);
3570 if (new_fd != NULL) {
3571 /* Find and select */
3572 cf->search_in_progress = TRUE;
3573 found = packet_list_select_row_from_data(new_fd);
3574 cf->search_in_progress = FALSE;
3575 cf->search_pos = 0; /* Reset the position */
3577 /* We didn't find a row corresponding to this frame.
3578 This means that the frame isn't being displayed currently,
3579 so we can't select it. */
3580 simple_message_box(ESD_TYPE_INFO, NULL,
3581 "The capture file is probably not fully dissected.",
3582 "End of capture exceeded!");
3585 return TRUE; /* success */
3587 return FALSE; /* failure */
3591 cf_goto_frame(capture_file *cf, guint fnumber)
3595 fdata = frame_data_sequence_find(cf->frames, fnumber);
3597 if (fdata == NULL) {
3598 /* we didn't find a packet with that packet number */
3599 statusbar_push_temporary_msg("There is no packet number %u.", fnumber);
3600 return FALSE; /* we failed to go to that packet */
3602 if (!fdata->flags.passed_dfilter) {
3603 /* that packet currently isn't displayed */
3604 /* XXX - add it to the set of displayed packets? */
3605 statusbar_push_temporary_msg("Packet number %u isn't displayed.", fnumber);
3606 return FALSE; /* we failed to go to that packet */
3609 if (!packet_list_select_row_from_data(fdata)) {
3610 /* We didn't find a row corresponding to this frame.
3611 This means that the frame isn't being displayed currently,
3612 so we can't select it. */
3613 simple_message_box(ESD_TYPE_INFO, NULL,
3614 "The capture file is probably not fully dissected.",
3615 "End of capture exceeded!");
3618 return TRUE; /* we got to that packet */
3622 cf_goto_top_frame(void)
3624 /* Find and select */
3625 packet_list_select_first_row();
3626 return TRUE; /* we got to that packet */
3630 cf_goto_bottom_frame(void)
3632 /* Find and select */
3633 packet_list_select_last_row();
3634 return TRUE; /* we got to that packet */
3638 * Go to frame specified by currently selected protocol tree item.
3641 cf_goto_framenum(capture_file *cf)
3643 header_field_info *hfinfo;
3646 if (cf->finfo_selected) {
3647 hfinfo = cf->finfo_selected->hfinfo;
3649 if (hfinfo->type == FT_FRAMENUM) {
3650 framenum = fvalue_get_uinteger(&cf->finfo_selected->value);
3652 return cf_goto_frame(cf, framenum);
3659 /* Select the packet on a given row. */
3661 cf_select_packet(capture_file *cf, int row)
3663 epan_dissect_t *old_edt;
3666 /* Get the frame data struct pointer for this frame */
3667 fdata = packet_list_get_row_data(row);
3669 if (fdata == NULL) {
3670 /* XXX - if a GtkCList's selection mode is GTK_SELECTION_BROWSE, when
3671 the first entry is added to it by "real_insert_row()", that row
3672 is selected (see "real_insert_row()", in "ui/gtk/gtkclist.c", in both
3673 our version and the vanilla GTK+ version).
3675 This means that a "select-row" signal is emitted; this causes
3676 "packet_list_select_cb()" to be called, which causes "cf_select_packet()"
3679 "cf_select_packet()" fetches, above, the data associated with the
3680 row that was selected; however, as "gtk_clist_append()", which
3681 called "real_insert_row()", hasn't yet returned, we haven't yet
3682 associated any data with that row, so we get back a null pointer.
3684 We can't assume that there's only one frame in the frame list,
3685 either, as we may be filtering the display.
3687 We therefore assume that, if "row" is 0, i.e. the first row
3688 is being selected, and "cf->first_displayed" equals
3689 "cf->last_displayed", i.e. there's only one frame being
3690 displayed, that frame is the frame we want.
3692 This means we have to set "cf->first_displayed" and
3693 "cf->last_displayed" before adding the row to the
3694 GtkCList; see the comment in "add_packet_to_packet_list()". */
3696 if (row == 0 && cf->first_displayed == cf->last_displayed)
3697 fdata = frame_data_sequence_find(cf->frames, cf->first_displayed);
3700 /* If fdata _still_ isn't set simply give up. */
3701 if (fdata == NULL) {
3705 /* Get the data in that frame. */
3706 if (!cf_read_frame (cf, fdata)) {
3710 /* Record that this frame is the current frame. */
3711 cf->current_frame = fdata;
3712 cf->current_row = row;
3715 /* Create the logical protocol tree. */
3716 /* We don't need the columns here. */
3717 cf->edt = epan_dissect_new(TRUE, TRUE);
3719 tap_build_interesting(cf->edt);
3720 epan_dissect_run(cf->edt, &cf->pseudo_header, cf->pd, cf->current_frame,
3723 dfilter_macro_build_ftv_cache(cf->edt->tree);
3725 cf_callback_invoke(cf_cb_packet_selected, cf);
3727 if (old_edt != NULL)
3728 epan_dissect_free(old_edt);
3732 /* Unselect the selected packet, if any. */
3734 cf_unselect_packet(capture_file *cf)
3736 epan_dissect_t *old_edt = cf->edt;
3740 /* No packet is selected. */
3741 cf->current_frame = NULL;
3742 cf->current_row = 0;
3744 cf_callback_invoke(cf_cb_packet_unselected, cf);
3746 /* No protocol tree means no selected field. */
3747 cf_unselect_field(cf);
3749 /* Destroy the epan_dissect_t for the unselected packet. */
3750 if (old_edt != NULL)
3751 epan_dissect_free(old_edt);
3754 /* Unset the selected protocol tree field, if any. */
3756 cf_unselect_field(capture_file *cf)
3758 cf->finfo_selected = NULL;
3760 cf_callback_invoke(cf_cb_field_unselected, cf);
3764 * Mark a particular frame.
3767 cf_mark_frame(capture_file *cf, frame_data *frame)
3769 if (! frame->flags.marked) {
3770 frame->flags.marked = TRUE;
3771 if (cf->count > cf->marked_count)
3777 * Unmark a particular frame.
3780 cf_unmark_frame(capture_file *cf, frame_data *frame)
3782 if (frame->flags.marked) {
3783 frame->flags.marked = FALSE;
3784 if (cf->marked_count > 0)
3790 * Ignore a particular frame.
3793 cf_ignore_frame(capture_file *cf, frame_data *frame)
3795 if (! frame->flags.ignored) {
3796 frame->flags.ignored = TRUE;
3797 if (cf->count > cf->ignored_count)
3798 cf->ignored_count++;
3803 * Un-ignore a particular frame.
3806 cf_unignore_frame(capture_file *cf, frame_data *frame)
3808 if (frame->flags.ignored) {
3809 frame->flags.ignored = FALSE;
3810 if (cf->ignored_count > 0)
3811 cf->ignored_count--;
3816 * Read the comment in SHB block
3820 cf_read_shb_comment(capture_file *cf)
3822 wtapng_section_t *shb_inf;
3823 const gchar *temp_str;
3825 /* Get info from SHB */
3826 shb_inf = wtap_file_get_shb_info(cf->wth);
3827 if (shb_inf == NULL)
3829 temp_str = shb_inf->opt_comment;
3837 cf_update_capture_comment(capture_file *cf, gchar *comment)
3839 wtapng_section_t *shb_inf;
3841 /* Get info from SHB */
3842 shb_inf = wtap_file_get_shb_info(cf->wth);
3844 /* See if the comment has changed or not */
3845 if (shb_inf && shb_inf->opt_comment) {
3846 if (strcmp(shb_inf->opt_comment, comment) == 0) {
3855 /* The comment has changed, let's update it */
3856 wtap_write_shb_comment(cf->wth, comment);
3857 /* Mark the file as having unsaved changes */
3858 cf->unsaved_changes = TRUE;
3862 cf_update_packet_comment(capture_file *cf, frame_data *fdata, gchar *comment)
3864 if (fdata->opt_comment != NULL) {
3865 /* OK, remove the old comment. */
3866 g_free(fdata->opt_comment);
3867 fdata->opt_comment = NULL;
3868 cf->packet_comment_count--;
3870 if (comment != NULL) {
3871 /* Add the new comment. */
3872 fdata->opt_comment = comment;
3873 cf->packet_comment_count++;
3876 /* OK, we have unsaved changes. */
3877 cf->unsaved_changes = TRUE;
3881 * Does this capture file have any comments?
3884 cf_has_comments(capture_file *cf)
3886 return (cf_read_shb_comment(cf) != NULL || cf->packet_comment_count != 0);
3893 } save_callback_args_t;
3896 * Save a capture to a file, in a particular format, saving either
3897 * all packets, all currently-displayed packets, or all marked packets.
3899 * Returns TRUE if it succeeds, FALSE otherwise; if it fails, it pops
3900 * up a message box for the failure.
3903 save_packet(capture_file *cf _U_, frame_data *fdata,
3904 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
3907 save_callback_args_t *args = argsp;
3908 struct wtap_pkthdr hdr;
3910 gchar *display_basename;
3912 /* init the wtap header for saving */
3913 /* XXX - these are the only flags that correspond to data that we have
3914 in the frame_data structure and that matter on a per-packet basis.
3916 For WTAP_HAS_CAP_LEN, either the file format has separate "captured"
3917 and "on the wire" lengths, or it doesn't.
3919 For WTAP_HAS_DROP_COUNT, Wiretap doesn't actually supply the value
3922 For WTAP_HAS_PACK_FLAGS, we currently don't save the FCS length
3923 from the packet flags. */
3924 hdr.presence_flags = 0;
3925 if (fdata->flags.has_ts)
3926 hdr.presence_flags |= WTAP_HAS_TS;
3927 if (fdata->flags.has_ts)
3928 hdr.presence_flags |= WTAP_HAS_INTERFACE_ID;
3929 hdr.ts.secs = fdata->abs_ts.secs;
3930 hdr.ts.nsecs = fdata->abs_ts.nsecs;
3931 hdr.caplen = fdata->cap_len;
3932 hdr.len = fdata->pkt_len;
3933 hdr.pkt_encap = fdata->lnk_t;
3935 hdr.interface_id = fdata->interface_id; /* identifier of the interface. */
3937 hdr.opt_comment = fdata->opt_comment; /* NULL if not available */
3940 hdr.pack_flags = /* XXX - 0 for now (any value for "we don't have it"?) */
3942 /* and save the packet */
3943 if (!wtap_dump(args->pdh, &hdr, pseudo_header, pd, &err)) {
3945 /* Wiretap error. */
3948 case WTAP_ERR_UNSUPPORTED_ENCAP:
3950 * This is a problem with the particular frame we're writing;
3951 * note that, and give the frame number.
3953 simple_error_message_box(
3954 "Frame %u has a network type that can't be saved in a \"%s\" file.",
3955 fdata->num, wtap_file_type_string(args->file_type));
3959 display_basename = g_filename_display_basename(args->fname);
3960 simple_error_message_box(
3961 "An error occurred while writing to the file \"%s\": %s.",
3962 display_basename, wtap_strerror(err));
3963 g_free(display_basename);
3968 write_failure_alert_box(args->fname, err);
3976 * Can this capture file be written out in any format using Wiretap
3977 * rather than by copying the raw data?
3980 cf_can_write_with_wiretap(capture_file *cf)
3984 for (ft = 0; ft < WTAP_NUM_FILE_TYPES; ft++) {
3985 /* To save a file with Wiretap, Wiretap has to handle that format,
3986 and its code to handle that format must be able to write a file
3987 with this file's encapsulation types. */
3988 if (wtap_dump_can_write_encaps(ft, cf->linktypes)) {
3989 /* OK, we can write it out in this type. */
3994 /* No, we couldn't save it in any format. */
3999 * Quick scan to find packet offsets.
4001 static cf_read_status_t
4002 rescan_file(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
4004 const struct wtap_pkthdr *phdr;
4009 progdlg_t *volatile progbar = NULL;
4011 volatile gint64 size;
4012 volatile float progbar_val;
4013 GTimeVal start_time;
4014 gchar status_str[100];
4015 volatile gint64 progbar_nextstep;
4016 volatile gint64 progbar_quantum;
4019 volatile int count = 0;
4021 volatile int displayed_once = 0;
4024 /* Close the old handle. */
4025 wtap_close(cf->wth);
4027 /* Open the new file. */
4028 cf->wth = wtap_open_offline(fname, err, &err_info, TRUE);
4029 if (cf->wth == NULL) {
4030 cf_open_failure_alert_box(fname, *err, err_info, FALSE, 0);
4031 return CF_READ_ERROR;
4034 /* We're scanning a file whose contents should be the same as what
4035 we had before, so we don't discard dissection state etc.. */
4038 /* Set the file name because we need it to set the follow stream filter.
4039 XXX - is that still true? We need it for other reasons, though,
4041 cf->filename = g_strdup(fname);
4043 /* Indicate whether it's a permanent or temporary file. */
4044 cf->is_tempfile = is_tempfile;
4046 /* No user changes yet. */
4047 cf->unsaved_changes = FALSE;
4049 cf->cd_t = wtap_file_type(cf->wth);
4050 cf->linktypes = g_array_sized_new(FALSE, FALSE, (guint) sizeof(int), 1);
4052 cf->snap = wtap_snapshot_length(cf->wth);
4053 if (cf->snap == 0) {
4054 /* Snapshot length not known. */
4055 cf->has_snap = FALSE;
4056 cf->snap = WTAP_MAX_PACKET_SIZE;
4058 cf->has_snap = TRUE;
4060 name_ptr = g_filename_display_basename(cf->filename);
4062 cf_callback_invoke(cf_cb_file_rescan_started, cf);
4064 /* Record whether the file is compressed.
4065 XXX - do we know this at open time? */
4066 cf->iscompressed = wtap_iscompressed(cf->wth);
4068 /* Find the size of the file. */
4069 size = wtap_file_size(cf->wth, NULL);
4071 /* Update the progress bar when it gets to this value. */
4072 progbar_nextstep = 0;
4073 /* When we reach the value that triggers a progress bar update,
4074 bump that value by this amount. */
4076 progbar_quantum = size/N_PROGBAR_UPDATES;
4077 if (progbar_quantum < MIN_QUANTUM)
4078 progbar_quantum = MIN_QUANTUM;
4080 progbar_quantum = 0;
4081 /* Progress so far. */
4085 g_get_current_time(&start_time);
4088 phdr = wtap_phdr(cf->wth);
4089 while ((wtap_read(cf->wth, err, &err_info, &data_offset))) {
4091 fdata = frame_data_sequence_find(cf->frames, framenum);
4092 fdata->file_off = data_offset;
4095 file_pos = wtap_read_so_far(cf->wth);
4097 /* Create the progress bar if necessary.
4098 * Check whether it should be created or not every MIN_NUMBER_OF_PACKET
4100 if ((progbar == NULL) && !(count % MIN_NUMBER_OF_PACKET)) {
4101 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
4102 progbar = delayed_create_progress_dlg(cf->window, "Rescanning", name_ptr,
4103 TRUE, &stop_flag, &start_time, progbar_val);
4106 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
4107 when we update it, we have to run the GTK+ main loop to get it
4108 to repaint what's pending, and doing so may involve an "ioctl()"
4109 to see if there's any pending input from an X server, and doing
4110 that for every packet can be costly, especially on a big file. */
4111 if (file_pos >= progbar_nextstep) {
4112 if (progbar != NULL) {
4113 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
4114 /* update the packet bar content on the first run or frequently on very large files */
4116 if (progbar_quantum > 500000 || displayed_once == 0) {
4117 if ((auto_scroll_live || displayed_once == 0 || cf->displayed_count < 1000) && cf->count != 0) {
4119 packets_bar_update();
4122 #endif /* HAVE_LIBPCAP */
4123 update_progress_dlg(progbar, progbar_val, status_str);
4125 progbar_nextstep += progbar_quantum;
4130 /* Well, the user decided to abort the rescan. Sadly, as this
4131 isn't a reread, recovering is difficult, so we'll just
4132 close the current capture. */
4136 /* Add this packet's link-layer encapsulation type to cf->linktypes, if
4137 it's not already there.
4138 XXX - yes, this is O(N), so if every packet had a different
4139 link-layer encapsulation type, it'd be O(N^2) to read the file, but
4140 there are probably going to be a small number of encapsulation types
4142 cf_add_encapsulation_type(cf, phdr->pkt_encap);
4145 /* Free the display name */
4148 /* We're done reading the file; destroy the progress bar if it was created. */
4149 if (progbar != NULL)
4150 destroy_progress_dlg(progbar);
4152 /* We're done reading sequentially through the file. */
4153 cf->state = FILE_READ_DONE;
4155 /* Close the sequential I/O side, to free up memory it requires. */
4156 wtap_sequential_close(cf->wth);
4158 /* compute the time it took to load the file */
4159 compute_elapsed(&start_time);
4161 /* Set the file encapsulation type now; we don't know what it is until
4162 we've looked at all the packets, as we don't know until then whether
4163 there's more than one type (and thus whether it's
4164 WTAP_ENCAP_PER_PACKET). */
4165 cf->lnk_t = wtap_file_encap(cf->wth);
4167 cf_callback_invoke(cf_cb_file_rescan_finished, cf);
4170 /* Our caller will give up at this point. */
4171 return CF_READ_ABORTED;
4175 /* Put up a message box noting that the read failed somewhere along
4176 the line. Don't throw out the stuff we managed to read, though,
4180 case WTAP_ERR_UNSUPPORTED:
4181 simple_error_message_box(
4182 "The capture file contains record data that Wireshark doesn't support.\n(%s)",
4187 case WTAP_ERR_UNSUPPORTED_ENCAP:
4188 simple_error_message_box(
4189 "The capture file has a packet with a network type that Wireshark doesn't support.\n(%s)",
4194 case WTAP_ERR_CANT_READ:
4195 simple_error_message_box(
4196 "An attempt to read from the capture file failed for"
4197 " some unknown reason.");
4200 case WTAP_ERR_SHORT_READ:
4201 simple_error_message_box(
4202 "The capture file appears to have been cut short"
4203 " in the middle of a packet.");
4206 case WTAP_ERR_BAD_FILE:
4207 simple_error_message_box(
4208 "The capture file appears to be damaged or corrupt.\n(%s)",
4213 case WTAP_ERR_DECOMPRESS:
4214 simple_error_message_box(
4215 "The compressed capture file appears to be damaged or corrupt.\n"
4221 simple_error_message_box(
4222 "An error occurred while reading the"
4223 " capture file: %s.", wtap_strerror(*err));
4226 return CF_READ_ERROR;
4232 cf_save_packets(capture_file *cf, const char *fname, guint save_format,
4233 gboolean compressed, gboolean discard_comments,
4234 gboolean dont_reopen)
4236 gchar *fname_new = NULL;
4245 save_callback_args_t callback_args;
4247 gchar *display_basename;
4252 cf_callback_invoke(cf_cb_file_save_started, (gpointer)fname);
4254 if (save_format == cf->cd_t && compressed == cf->iscompressed
4255 && !discard_comments && !cf->unsaved_changes) {
4256 /* We're saving in the format it's already in, and we're
4257 not discarding comments, and there are no changes we have
4258 in memory that aren't saved to the file, so we can just move
4259 or copy the raw data. */
4261 if (cf->is_tempfile) {
4262 /* The file being saved is a temporary file from a live
4263 capture, so it doesn't need to stay around under that name;
4264 first, try renaming the capture buffer file to the new name.
4265 This acts as a "safe save", in that, if the file already
4266 exists, the existing file will be removed only if the rename
4269 Sadly, on Windows, as we have the current capture file
4270 open, even MoveFileEx() with MOVEFILE_REPLACE_EXISTING
4271 (to cause the rename to remove an existing target), as
4272 done by ws_stdio_rename() (ws_rename() is #defined to
4273 be ws_stdio_rename() on Windows) will fail.
4275 According to the MSDN documentation for CreateFile(), if,
4276 when we open a capture file, we were to directly do a CreateFile(),
4277 opening with FILE_SHARE_DELETE|FILE_SHARE_READ, and then
4278 convert it to a file descriptor with _open_osfhandle(),
4279 that would allow the file to be renamed out from under us.
4281 However, that doesn't work in practice. Perhaps the problem
4282 is that the process doing the rename is the process that
4283 has the file open. */
4285 if (ws_rename(cf->filename, fname) == 0) {
4286 /* That succeeded - there's no need to copy the source file. */
4287 how_to_save = SAVE_WITH_MOVE;
4289 if (errno == EXDEV) {
4290 /* They're on different file systems, so we have to copy the
4292 how_to_save = SAVE_WITH_COPY;
4294 /* The rename failed, but not because they're on different
4295 file systems - put up an error message. (Or should we
4296 just punt and try to copy? The only reason why I'd
4297 expect the rename to fail and the copy to succeed would
4298 be if we didn't have permission to remove the file from
4299 the temporary directory, and that might be fixable - but
4300 is it worth requiring the user to go off and fix it?) */
4301 cf_rename_failure_alert_box(fname, errno);
4306 how_to_save = SAVE_WITH_COPY;
4309 /* It's a permanent file, so we should copy it, and not remove the
4311 how_to_save = SAVE_WITH_COPY;
4314 if (how_to_save == SAVE_WITH_COPY) {
4315 /* Copy the file, if we haven't moved it. If we're overwriting
4316 an existing file, we do it with a "safe save", by writing
4317 to a new file and, if the write succeeds, renaming the
4318 new file on top of the old file. */
4319 if (file_exists(fname)) {
4320 fname_new = g_strdup_printf("%s~", fname);
4321 if (!copy_file_binary_mode(cf->filename, fname_new))
4324 if (!copy_file_binary_mode(cf->filename, fname))
4329 /* Either we're saving in a different format or we're saving changes,
4330 such as added, modified, or removed comments, that haven't yet
4331 been written to the underlying file; we can't do that by copying
4332 or moving the capture file, we have to do it by writing the packets
4335 wtapng_section_t *shb_hdr = NULL;
4336 wtapng_iface_descriptions_t *idb_inf = NULL;
4339 shb_hdr = wtap_file_get_shb_info(cf->wth);
4340 idb_inf = wtap_file_get_idb_info(cf->wth);
4342 /* Determine what file encapsulation type we should use. */
4343 encap = wtap_dump_file_encap_type(cf->linktypes);
4345 if (file_exists(fname)) {
4346 /* We're overwriting an existing file; write out to a new file,
4347 and, if that succeeds, rename the new file on top of the
4348 old file. That makes this a "safe save", so that we don't
4349 lose the old file if we have a problem writing out the new
4350 file. (If the existing file is the current capture file,
4351 we *HAVE* to do that, otherwise we're overwriting the file
4352 from which we're reading the packets that we're writing!) */
4353 fname_new = g_strdup_printf("%s~", fname);
4354 pdh = wtap_dump_open_ng(fname_new, save_format, encap, cf->snap,
4355 compressed, shb_hdr, idb_inf, &err);
4357 pdh = wtap_dump_open_ng(fname, save_format, encap, cf->snap,
4358 compressed, shb_hdr, idb_inf, &err);
4364 cf_open_failure_alert_box(fname, err, NULL, TRUE, save_format);
4368 /* Add address resolution */
4369 wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list());
4371 /* Iterate through the list of packets, processing all the packets. */
4372 callback_args.pdh = pdh;
4373 callback_args.fname = fname;
4374 callback_args.file_type = save_format;
4375 switch (process_specified_packets(cf, NULL, "Saving", "packets",
4376 TRUE, save_packet, &callback_args)) {
4379 /* Completed successfully. */
4383 /* The user decided to abort the saving.
4384 If we're writing to a temporary file, remove it.
4385 XXX - should we do so even if we're not writing to a
4387 wtap_dump_close(pdh, &err);
4388 if (fname_new != NULL)
4389 ws_unlink(fname_new);
4390 cf_callback_invoke(cf_cb_file_save_stopped, NULL);
4391 return CF_WRITE_ABORTED;
4394 /* Error while saving.
4395 If we're writing to a temporary file, remove it. */
4396 if (fname_new != NULL)
4397 ws_unlink(fname_new);
4398 wtap_dump_close(pdh, &err);
4402 if (!wtap_dump_close(pdh, &err)) {
4403 cf_close_failure_alert_box(fname, err);
4407 how_to_save = SAVE_WITH_WTAP;
4410 if (fname_new != NULL) {
4411 /* We wrote out to fname_new, and should rename it on top of
4412 fname. fname_new is now closed, so that should be possible even
4413 on Windows. However, on Windows, we first need to close whatever
4414 file descriptors we have open for fname. */
4416 wtap_fdclose(cf->wth);
4418 /* Now do the rename. */
4419 if (ws_rename(fname_new, fname) == -1) {
4420 /* Well, the rename failed. */
4421 cf_rename_failure_alert_box(fname, errno);
4423 /* Attempt to reopen the random file descriptor using the
4424 current file's filename. (At this point, the sequential
4425 file descriptor is closed.) */
4426 if (!wtap_fdreopen(cf->wth, cf->filename, &err)) {
4427 /* Oh, well, we're screwed. */
4428 display_basename = g_filename_display_basename(cf->filename);
4429 simple_error_message_box(
4430 file_open_error_message(err, FALSE), display_basename);
4431 g_free(display_basename);
4438 cf_callback_invoke(cf_cb_file_save_finished, NULL);
4439 cf->unsaved_changes = FALSE;
4442 switch (how_to_save) {
4444 case SAVE_WITH_MOVE:
4445 /* We just moved the file, so the wtap structure refers to the
4446 new file, and all the information other than the filename
4447 and the "is temporary" status applies to the new file; just
4449 g_free(cf->filename);
4450 cf->filename = g_strdup(fname);
4451 cf->is_tempfile = FALSE;
4452 cf_callback_invoke(cf_cb_file_fast_save_finished, cf);
4455 case SAVE_WITH_COPY:
4456 /* We just copied the file, s all the information other than
4457 the wtap structure, the filename, and the "is temporary"
4458 status applies to the new file; just update that. */
4459 wtap_close(cf->wth);
4460 cf->wth = wtap_open_offline(fname, &err, &err_info, TRUE);
4461 if (cf->wth == NULL) {
4462 cf_open_failure_alert_box(fname, err, err_info, FALSE, 0);
4465 g_free(cf->filename);
4466 cf->filename = g_strdup(fname);
4467 cf->is_tempfile = FALSE;
4469 cf_callback_invoke(cf_cb_file_fast_save_finished, cf);
4472 case SAVE_WITH_WTAP:
4473 /* Open and read the file we saved to.
4475 XXX - this is somewhat of a waste; we already have the
4476 packets, all this gets us is updated file type information
4477 (which we could just stuff into "cf"), and having the new
4478 file be the one we have opened and from which we're reading
4479 the data, and it means we have to spend time opening and
4480 reading the file, which could be a significant amount of
4481 time if the file is large.
4483 If the capture-file-writing code were to return the
4484 seek offset of each packet it writes, we could save that
4485 in the frame_data structure for the frame, and just open
4486 the file without reading it again...
4488 ...as long as, for gzipped files, the process of writing
4489 out the file *also* generates the information needed to
4490 support fast random access to the compressed file. */
4491 if (rescan_file(cf, fname, FALSE, &err) != CF_READ_OK) {
4492 /* The rescan failed; just close the file. Either
4493 a dialog was popped up for the failure, so the
4494 user knows what happened, or they stopped the
4495 rescan, in which case they know what happened. */
4501 /* If we were told to discard the comments, do so. */
4502 if (discard_comments) {
4503 /* Remove SHB comment, if any. */
4504 wtap_write_shb_comment(cf->wth, NULL);
4506 /* Remove packet comments. */
4507 for (framenum = 1; framenum <= cf->count; framenum++) {
4508 fdata = frame_data_sequence_find(cf->frames, framenum);
4509 if (fdata->opt_comment) {
4510 g_free(fdata->opt_comment);
4511 fdata->opt_comment = NULL;
4512 cf->packet_comment_count--;
4520 if (fname_new != NULL) {
4521 /* We were trying to write to a temporary file; get rid of it if it
4522 exists. (We don't care whether this fails, as, if it fails,
4523 there's not much we can do about it. I guess if it failed for
4524 a reason other than "it doesn't exist", we could report an
4525 error, so the user knows there's a junk file that they might
4526 want to clean up.) */
4527 ws_unlink(fname_new);
4530 cf_callback_invoke(cf_cb_file_save_failed, NULL);
4531 return CF_WRITE_ERROR;
4535 cf_export_specified_packets(capture_file *cf, const char *fname,
4536 packet_range_t *range, guint save_format,
4537 gboolean compressed)
4539 gchar *fname_new = NULL;
4542 save_callback_args_t callback_args;
4543 wtapng_section_t *shb_hdr;
4544 wtapng_iface_descriptions_t *idb_inf;
4547 cf_callback_invoke(cf_cb_file_export_specified_packets_started, (gpointer)fname);
4549 packet_range_process_init(range);
4551 /* We're writing out specified packets from the specified capture
4552 file to another file. Even if all captured packets are to be
4553 written, don't special-case the operation - read each packet
4554 and then write it out if it's one of the specified ones. */
4556 shb_hdr = wtap_file_get_shb_info(cf->wth);
4557 idb_inf = wtap_file_get_idb_info(cf->wth);
4559 /* Determine what file encapsulation type we should use. */
4560 encap = wtap_dump_file_encap_type(cf->linktypes);
4562 if (file_exists(fname)) {
4563 /* We're overwriting an existing file; write out to a new file,
4564 and, if that succeeds, rename the new file on top of the
4565 old file. That makes this a "safe save", so that we don't
4566 lose the old file if we have a problem writing out the new
4567 file. (If the existing file is the current capture file,
4568 we *HAVE* to do that, otherwise we're overwriting the file
4569 from which we're reading the packets that we're writing!) */
4570 fname_new = g_strdup_printf("%s~", fname);
4571 pdh = wtap_dump_open_ng(fname_new, save_format, encap, cf->snap,
4572 compressed, shb_hdr, idb_inf, &err);
4574 pdh = wtap_dump_open_ng(fname, save_format, encap, cf->snap,
4575 compressed, shb_hdr, idb_inf, &err);
4581 cf_open_failure_alert_box(fname, err, NULL, TRUE, save_format);
4585 /* Add address resolution */
4586 wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list());
4588 /* Iterate through the list of packets, processing the packets we were
4591 XXX - we've already called "packet_range_process_init(range)", but
4592 "process_specified_packets()" will do it again. Fortunately,
4593 that's harmless in this case, as we haven't done anything to
4594 "range" since we initialized it. */
4595 callback_args.pdh = pdh;
4596 callback_args.fname = fname;
4597 callback_args.file_type = save_format;
4598 switch (process_specified_packets(cf, range, "Writing", "specified packets",
4599 TRUE, save_packet, &callback_args)) {
4602 /* Completed successfully. */
4606 /* The user decided to abort the saving.
4607 If we're writing to a temporary file, remove it.
4608 XXX - should we do so even if we're not writing to a
4610 wtap_dump_close(pdh, &err);
4611 if (fname_new != NULL)
4612 ws_unlink(fname_new);
4613 cf_callback_invoke(cf_cb_file_export_specified_packets_stopped, NULL);
4614 return CF_WRITE_ABORTED;
4618 /* Error while saving.
4619 If we're writing to a temporary file, remove it. */
4620 if (fname_new != NULL)
4621 ws_unlink(fname_new);
4622 wtap_dump_close(pdh, &err);
4626 if (!wtap_dump_close(pdh, &err)) {
4627 cf_close_failure_alert_box(fname, err);
4631 if (fname_new != NULL) {
4632 /* We wrote out to fname_new, and should rename it on top of
4633 fname; fname is now closed, so that should be possible even
4634 on Windows. Do the rename. */
4635 if (ws_rename(fname_new, fname) == -1) {
4636 /* Well, the rename failed. */
4637 cf_rename_failure_alert_box(fname, errno);
4642 cf_callback_invoke(cf_cb_file_export_specified_packets_finished, NULL);
4646 if (fname_new != NULL) {
4647 /* We were trying to write to a temporary file; get rid of it if it
4648 exists. (We don't care whether this fails, as, if it fails,
4649 there's not much we can do about it. I guess if it failed for
4650 a reason other than "it doesn't exist", we could report an
4651 error, so the user knows there's a junk file that they might
4652 want to clean up.) */
4653 ws_unlink(fname_new);
4656 cf_callback_invoke(cf_cb_file_export_specified_packets_failed, NULL);
4657 return CF_WRITE_ERROR;
4661 cf_open_failure_alert_box(const char *filename, int err, gchar *err_info,
4662 gboolean for_writing, int file_type)
4664 gchar *display_basename;
4667 /* Wiretap error. */
4668 display_basename = g_filename_display_basename(filename);
4671 case WTAP_ERR_NOT_REGULAR_FILE:
4672 simple_error_message_box(
4673 "The file \"%s\" is a \"special file\" or socket or other non-regular file.",
4677 case WTAP_ERR_RANDOM_OPEN_PIPE:
4678 /* Seen only when opening a capture file for reading. */
4679 simple_error_message_box(
4680 "The file \"%s\" is a pipe or FIFO; Wireshark can't read pipe or FIFO files.\n"
4681 "To capture from a pipe or FIFO use wireshark -i -",
4685 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
4686 /* Seen only when opening a capture file for reading. */
4687 simple_error_message_box(
4688 "The file \"%s\" isn't a capture file in a format Wireshark understands.",
4692 case WTAP_ERR_UNSUPPORTED:
4693 /* Seen only when opening a capture file for reading. */
4694 simple_error_message_box(
4695 "The file \"%s\" isn't a capture file in a format Wireshark understands.\n"
4697 display_basename, err_info);
4701 case WTAP_ERR_CANT_WRITE_TO_PIPE:
4702 /* Seen only when opening a capture file for writing. */
4703 simple_error_message_box(
4704 "The file \"%s\" is a pipe, and %s capture files can't be "
4705 "written to a pipe.",
4706 display_basename, wtap_file_type_string(file_type));
4709 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
4710 /* Seen only when opening a capture file for writing. */
4711 simple_error_message_box(
4712 "Wireshark doesn't support writing capture files in that format.");
4715 case WTAP_ERR_UNSUPPORTED_ENCAP:
4717 simple_error_message_box("Wireshark can't save this capture in that format.");
4719 simple_error_message_box(
4720 "The file \"%s\" is a capture for a network type that Wireshark doesn't support.\n"
4722 display_basename, err_info);
4727 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
4729 simple_error_message_box(
4730 "Wireshark can't save this capture in that format.");
4732 simple_error_message_box(
4733 "The file \"%s\" is a capture for a network type that Wireshark doesn't support.",
4738 case WTAP_ERR_BAD_FILE:
4739 /* Seen only when opening a capture file for reading. */
4740 simple_error_message_box(
4741 "The file \"%s\" appears to be damaged or corrupt.\n"
4743 display_basename, err_info);
4747 case WTAP_ERR_CANT_OPEN:
4749 simple_error_message_box(
4750 "The file \"%s\" could not be created for some unknown reason.",
4753 simple_error_message_box(
4754 "The file \"%s\" could not be opened for some unknown reason.",
4759 case WTAP_ERR_SHORT_READ:
4760 simple_error_message_box(
4761 "The file \"%s\" appears to have been cut short"
4762 " in the middle of a packet or other data.",
4766 case WTAP_ERR_SHORT_WRITE:
4767 simple_error_message_box(
4768 "A full header couldn't be written to the file \"%s\".",
4772 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
4773 simple_error_message_box(
4774 "This file type cannot be written as a compressed file.");
4777 case WTAP_ERR_DECOMPRESS:
4778 simple_error_message_box(
4779 "The compressed file \"%s\" appears to be damaged or corrupt.\n"
4780 "(%s)", display_basename, err_info);
4785 simple_error_message_box(
4786 "The file \"%s\" could not be %s: %s.",
4788 for_writing ? "created" : "opened",
4789 wtap_strerror(err));
4792 g_free(display_basename);
4795 open_failure_alert_box(filename, err, for_writing);
4800 * XXX - whether we mention the source pathname, the target pathname,
4801 * or both depends on the error and on what we find if we look for
4802 * one or both of them.
4805 cf_rename_failure_alert_box(const char *filename, int err)
4807 gchar *display_basename;
4809 display_basename = g_filename_display_basename(filename);
4813 /* XXX - should check whether the source exists and, if not,
4814 report it as the problem and, if so, report the destination
4816 simple_error_message_box("The path to the file \"%s\" doesn't exist.",
4821 /* XXX - if we're doing a rename after a safe save, we should
4822 probably say something else. */
4823 simple_error_message_box("You don't have permission to move the capture file to \"%s\".",
4828 /* XXX - this should probably mention both the source and destination
4830 simple_error_message_box("The file \"%s\" could not be moved: %s.",
4831 display_basename, wtap_strerror(err));
4834 g_free(display_basename);
4837 /* Check for write errors - if the file is being written to an NFS server,
4838 a write error may not show up until the file is closed, as NFS clients
4839 might not send writes to the server until the "write()" call finishes,
4840 so that the write may fail on the server but the "write()" may succeed. */
4842 cf_close_failure_alert_box(const char *filename, int err)
4844 gchar *display_basename;
4847 /* Wiretap error. */
4848 display_basename = g_filename_display_basename(filename);
4851 case WTAP_ERR_CANT_CLOSE:
4852 simple_error_message_box(
4853 "The file \"%s\" couldn't be closed for some unknown reason.",
4857 case WTAP_ERR_SHORT_WRITE:
4858 simple_error_message_box(
4859 "Not all the packets could be written to the file \"%s\".",
4864 simple_error_message_box(
4865 "An error occurred while closing the file \"%s\": %s.",
4866 display_basename, wtap_strerror(err));
4869 g_free(display_basename);
4872 We assume that a close error from the OS is really a write error. */
4873 write_failure_alert_box(filename, err);
4877 /* Reload the current capture file. */
4879 cf_reload(capture_file *cf) {
4881 gboolean is_tempfile;
4884 /* If the file could be opened, "cf_open()" calls "cf_close()"
4885 to get rid of state for the old capture file before filling in state
4886 for the new capture file. "cf_close()" will remove the file if
4887 it's a temporary file; we don't want that to happen (for one thing,
4888 it'd prevent subsequent reopens from working). Remember whether it's
4889 a temporary file, mark it as not being a temporary file, and then
4890 reopen it as the type of file it was.
4892 Also, "cf_close()" will free "cf->filename", so we must make
4893 a copy of it first. */
4894 filename = g_strdup(cf->filename);
4895 is_tempfile = cf->is_tempfile;
4896 cf->is_tempfile = FALSE;
4897 if (cf_open(cf, filename, is_tempfile, &err) == CF_OK) {
4898 switch (cf_read(cf, TRUE)) {
4902 /* Just because we got an error, that doesn't mean we were unable
4903 to read any of the file; we handle what we could get from the
4907 case CF_READ_ABORTED:
4908 /* The user bailed out of re-reading the capture file; the
4909 capture file has been closed - just free the capture file name
4910 string and return (without changing the last containing
4916 /* The open failed, so "cf->is_tempfile" wasn't set to "is_tempfile".
4917 Instead, the file was left open, so we should restore "cf->is_tempfile"
4920 XXX - change the menu? Presumably "cf_open()" will do that;
4921 make sure it does! */
4922 cf->is_tempfile = is_tempfile;
4924 /* "cf_open()" made a copy of the file name we handed it, so
4925 we should free up our copy. */
4935 * indent-tabs-mode: nil
4938 * ex: set shiftwidth=2 tabstop=8 expandtab:
4939 * :indentSize=2:tabSize=8:noTabs=true: