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;
1779 guint32 frames_count;
1781 /* Compile the current display filter.
1782 * We assume this will not fail since cf->dfilter is only set in
1783 * cf_filter IFF the filter was valid.
1785 compiled = dfilter_compile(cf->dfilter, &dfcode);
1786 g_assert(!cf->dfilter || (compiled && dfcode));
1788 /* Do we have any tap listeners with filters? */
1789 filtering_tap_listeners = have_filtering_tap_listeners();
1791 /* Get the union of the flags for all tap listeners. */
1792 tap_flags = union_of_tap_listener_flags();
1794 reset_tap_listeners();
1795 /* Which frame, if any, is the currently selected frame?
1796 XXX - should the selected frame or the focus frame be the "current"
1797 frame, that frame being the one from which "Find Frame" searches
1799 selected_frame = cf->current_frame;
1801 /* Mark frame num as not found */
1802 selected_frame_num = -1;
1804 /* Freeze the packet list while we redo it, so we don't get any
1805 screen updates while it happens. */
1806 packet_list_freeze();
1809 /* We need to re-initialize all the state information that protocols
1810 keep, because some preference that controls a dissector has changed,
1811 which might cause the state information to be constructed differently
1812 by that dissector. */
1814 /* We might receive new packets while redissecting, and we don't
1815 want to dissect those before their time. */
1816 cf->redissecting = TRUE;
1818 /* Cleanup all data structures used for dissection. */
1819 cleanup_dissection();
1820 /* Initialize all data structures used for dissection. */
1823 /* We need to redissect the packets so we have to discard our old
1824 * packet list store. */
1825 packet_list_clear();
1826 add_to_packet_list = TRUE;
1829 /* We don't yet know which will be the first and last frames displayed. */
1830 cf->first_displayed = 0;
1831 cf->last_displayed = 0;
1833 /* We currently don't display any packets */
1834 cf->displayed_count = 0;
1836 /* Iterate through the list of frames. Call a routine for each frame
1837 to check whether it should be displayed and, if so, add it to
1838 the display list. */
1839 nstime_set_unset(&first_ts);
1844 /* Update the progress bar when it gets to this value. */
1845 progbar_nextstep = 0;
1846 /* When we reach the value that triggers a progress bar update,
1847 bump that value by this amount. */
1848 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
1849 /* Count of packets at which we've looked. */
1851 /* Progress so far. */
1855 g_get_current_time(&start_time);
1857 /* no previous row yet */
1858 prev_frame_num = -1;
1861 preceding_frame_num = -1;
1862 preceding_frame = NULL;
1863 following_frame_num = -1;
1864 following_frame = NULL;
1866 selected_frame_seen = FALSE;
1868 frames_count = cf->count;
1869 for (framenum = 1; framenum <= frames_count; framenum++) {
1870 fdata = frame_data_sequence_find(cf->frames, framenum);
1872 /* Create the progress bar if necessary.
1873 We check on every iteration of the loop, so that it takes no
1874 longer than the standard time to create it (otherwise, for a
1875 large file, we might take considerably longer than that standard
1876 time in order to get to the next progress bar step). */
1877 if (progbar == NULL)
1878 progbar = delayed_create_progress_dlg(cf->window, action, action_item, TRUE,
1879 &stop_flag, &start_time,
1882 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
1883 when we update it, we have to run the GTK+ main loop to get it
1884 to repaint what's pending, and doing so may involve an "ioctl()"
1885 to see if there's any pending input from an X server, and doing
1886 that for every packet can be costly, especially on a big file. */
1887 if (count >= progbar_nextstep) {
1888 /* let's not divide by zero. I should never be started
1889 * with count == 0, so let's assert that
1891 g_assert(cf->count > 0);
1892 progbar_val = (gfloat) count / frames_count;
1894 if (progbar != NULL) {
1895 g_snprintf(status_str, sizeof(status_str),
1896 "%4u of %u frames", count, frames_count);
1897 update_progress_dlg(progbar, progbar_val, status_str);
1900 progbar_nextstep += progbar_quantum;
1904 /* Well, the user decided to abort the filtering. Just stop.
1906 XXX - go back to the previous filter? Users probably just
1907 want not to wait for a filtering operation to finish;
1908 unless we cancel by having no filter, reverting to the
1909 previous filter will probably be even more expensive than
1910 continuing the filtering, as it involves going back to the
1911 beginning and filtering, and even with no filter we currently
1912 have to re-generate the entire clist, which is also expensive.
1914 I'm not sure what Network Monitor does, but it doesn't appear
1915 to give you an unfiltered display if you cancel. */
1922 /* Since all state for the frame was destroyed, mark the frame
1923 * as not visited, free the GSList referring to the state
1924 * data (the per-frame data itself was freed by
1925 * "init_dissection()"), and null out the GSList pointer. */
1926 fdata->flags.visited = 0;
1927 frame_data_cleanup(fdata);
1928 frames_count = cf->count;
1931 if (redissect || refilter) {
1932 /* If we're redissecting or refiltering then any frame dependencies
1933 * from the previous dissection/filtering are no longer valid.
1935 fdata->flags.dependent_of_displayed = 0;
1938 if (!cf_read_frame(cf, fdata))
1939 break; /* error reading the frame */
1941 /* If the previous frame is displayed, and we haven't yet seen the
1942 selected frame, remember that frame - it's the closest one we've
1943 yet seen before the selected frame. */
1944 if (prev_frame_num != -1 && !selected_frame_seen && prev_frame->flags.passed_dfilter) {
1945 preceding_frame_num = prev_frame_num;
1946 preceding_frame = prev_frame;
1948 add_packet_to_packet_list(fdata, cf, dfcode, filtering_tap_listeners,
1949 tap_flags, &cf->pseudo_header, cf->pd,
1951 add_to_packet_list);
1953 /* If this frame is displayed, and this is the first frame we've
1954 seen displayed after the selected frame, remember this frame -
1955 it's the closest one we've yet seen at or after the selected
1957 if (fdata->flags.passed_dfilter && selected_frame_seen && following_frame_num == -1) {
1958 following_frame_num = fdata->num;
1959 following_frame = fdata;
1961 if (fdata == selected_frame) {
1962 selected_frame_seen = TRUE;
1963 if (fdata->flags.passed_dfilter)
1964 selected_frame_num = fdata->num;
1967 /* Remember this frame - it'll be the previous frame
1968 on the next pass through the loop. */
1969 prev_frame_num = fdata->num;
1973 /* We are done redissecting the packet list. */
1974 cf->redissecting = FALSE;
1977 frames_count = cf->count;
1978 /* Clear out what remains of the visited flags and per-frame data
1981 XXX - that may cause various forms of bogosity when dissecting
1982 these frames, as they won't have been seen by this sequential
1983 pass, but the only alternative I see is to keep scanning them
1984 even though the user requested that the scan stop, and that
1985 would leave the user stuck with an Wireshark grinding on
1986 until it finishes. Should we just stick them with that? */
1987 for (; framenum <= frames_count; framenum++) {
1988 fdata = frame_data_sequence_find(cf->frames, framenum);
1989 fdata->flags.visited = 0;
1990 frame_data_cleanup(fdata);
1994 /* We're done filtering the packets; destroy the progress bar if it
1996 if (progbar != NULL)
1997 destroy_progress_dlg(progbar);
1999 /* Unfreeze the packet list. */
2000 if (!add_to_packet_list)
2001 packet_list_recreate_visible_rows();
2003 /* Compute the time it took to filter the file */
2004 compute_elapsed(&start_time);
2008 if (selected_frame_num == -1) {
2009 /* The selected frame didn't pass the filter. */
2010 if (selected_frame == NULL) {
2011 /* That's because there *was* no selected frame. Make the first
2012 displayed frame the current frame. */
2013 selected_frame_num = 0;
2015 /* Find the nearest displayed frame to the selected frame (whether
2016 it's before or after that frame) and make that the current frame.
2017 If the next and previous displayed frames are equidistant from the
2018 selected frame, choose the next one. */
2019 g_assert(following_frame == NULL ||
2020 following_frame->num >= selected_frame->num);
2021 g_assert(preceding_frame == NULL ||
2022 preceding_frame->num <= selected_frame->num);
2023 if (following_frame == NULL) {
2024 /* No frame after the selected frame passed the filter, so we
2025 have to select the last displayed frame before the selected
2027 selected_frame_num = preceding_frame_num;
2028 selected_frame = preceding_frame;
2029 } else if (preceding_frame == NULL) {
2030 /* No frame before the selected frame passed the filter, so we
2031 have to select the first displayed frame after the selected
2033 selected_frame_num = following_frame_num;
2034 selected_frame = following_frame;
2036 /* Frames before and after the selected frame passed the filter, so
2037 we'll select the previous frame */
2038 selected_frame_num = preceding_frame_num;
2039 selected_frame = preceding_frame;
2044 if (selected_frame_num == -1) {
2045 /* There are no frames displayed at all. */
2046 cf_unselect_packet(cf);
2048 /* Either the frame that was selected passed the filter, or we've
2049 found the nearest displayed frame to that frame. Select it, make
2050 it the focus row, and make it visible. */
2051 /* Set to invalid to force update of packet list and packet details */
2052 cf->current_row = -1;
2053 if (selected_frame_num == 0) {
2054 packet_list_select_first_row();
2056 if (!packet_list_select_row_from_data(selected_frame)) {
2057 /* We didn't find a row corresponding to this frame.
2058 This means that the frame isn't being displayed currently,
2059 so we can't select it. */
2060 simple_message_box(ESD_TYPE_INFO, NULL,
2061 "The capture file is probably not fully dissected.",
2062 "End of capture exceeded!");
2067 /* Cleanup and release all dfilter resources */
2068 dfilter_free(dfcode);
2073 * Scan trough all frame data and recalculate the ref time
2074 * without rereading the file.
2075 * XXX - do we need a progres bar or is this fast enough?
2078 ref_time_packets(capture_file *cf)
2083 nstime_set_unset(&first_ts);
2087 for (framenum = 1; framenum <= cf->count; framenum++) {
2088 fdata = frame_data_sequence_find(cf->frames, framenum);
2090 /* just add some value here until we know if it is being displayed or not */
2091 fdata->cum_bytes = cum_bytes + fdata->pkt_len;
2097 /* If we don't have the time stamp of the first packet in the
2098 capture, it's because this is the first packet. Save the time
2099 stamp of this packet as the time stamp of the first packet. */
2100 if (nstime_is_unset(&first_ts)) {
2101 first_ts = fdata->abs_ts;
2103 /* if this frames is marked as a reference time frame, reset
2104 firstsec and firstusec to this frame */
2105 if (fdata->flags.ref_time) {
2106 first_ts = fdata->abs_ts;
2109 /* If we don't have the time stamp of the previous displayed packet,
2110 it's because this is the first displayed packet. Save the time
2111 stamp of this packet as the time stamp of the previous displayed
2113 if (prev_dis == NULL) {
2117 /* Get the time elapsed between the first packet and this packet. */
2118 nstime_delta(&fdata->rel_ts, &fdata->abs_ts, &first_ts);
2120 /* If it's greater than the current elapsed time, set the elapsed time
2121 to it (we check for "greater than" so as not to be confused by
2122 time moving backwards). */
2123 if ((gint32)cf->elapsed_time.secs < fdata->rel_ts.secs
2124 || ((gint32)cf->elapsed_time.secs == fdata->rel_ts.secs && (gint32)cf->elapsed_time.nsecs < fdata->rel_ts.nsecs)) {
2125 cf->elapsed_time = fdata->rel_ts;
2128 /* If this frame is displayed, get the time elapsed between the
2129 previous displayed packet and this packet. */
2130 if ( fdata->flags.passed_dfilter ) {
2131 fdata->prev_dis = prev_dis;
2138 if ( (fdata->flags.passed_dfilter) || (fdata->flags.ref_time) ) {
2139 /* This frame either passed the display filter list or is marked as
2140 a time reference frame. All time reference frames are displayed
2141 even if they dont pass the display filter */
2142 if (fdata->flags.ref_time) {
2143 /* if this was a TIME REF frame we should reset the cum_bytes field */
2144 cum_bytes = fdata->pkt_len;
2145 fdata->cum_bytes = cum_bytes;
2147 /* increase cum_bytes with this packets length */
2148 cum_bytes += fdata->pkt_len;
2161 process_specified_packets(capture_file *cf, packet_range_t *range,
2162 const char *string1, const char *string2, gboolean terminate_is_stop,
2163 gboolean (*callback)(capture_file *, frame_data *,
2164 union wtap_pseudo_header *, const guint8 *, void *),
2165 void *callback_args)
2167 union wtap_pseudo_header pseudo_header;
2171 guint8 pd[WTAP_MAX_PACKET_SIZE+1];
2172 psp_return_t ret = PSP_FINISHED;
2174 progdlg_t *progbar = NULL;
2177 gboolean progbar_stop_flag;
2178 GTimeVal progbar_start_time;
2179 gchar progbar_status_str[100];
2180 int progbar_nextstep;
2181 int progbar_quantum;
2182 range_process_e process_this;
2184 /* Update the progress bar when it gets to this value. */
2185 progbar_nextstep = 0;
2186 /* When we reach the value that triggers a progress bar update,
2187 bump that value by this amount. */
2188 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
2189 /* Count of packets at which we've looked. */
2191 /* Progress so far. */
2194 progbar_stop_flag = FALSE;
2195 g_get_current_time(&progbar_start_time);
2198 packet_range_process_init(range);
2200 /* Iterate through all the packets, printing the packets that
2201 were selected by the current display filter. */
2202 for (framenum = 1; framenum <= cf->count; framenum++) {
2203 fdata = frame_data_sequence_find(cf->frames, framenum);
2205 /* Create the progress bar if necessary.
2206 We check on every iteration of the loop, so that it takes no
2207 longer than the standard time to create it (otherwise, for a
2208 large file, we might take considerably longer than that standard
2209 time in order to get to the next progress bar step). */
2210 if (progbar == NULL)
2211 progbar = delayed_create_progress_dlg(cf->window, string1, string2,
2214 &progbar_start_time,
2217 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
2218 when we update it, we have to run the GTK+ main loop to get it
2219 to repaint what's pending, and doing so may involve an "ioctl()"
2220 to see if there's any pending input from an X server, and doing
2221 that for every packet can be costly, especially on a big file. */
2222 if (progbar_count >= progbar_nextstep) {
2223 /* let's not divide by zero. I should never be started
2224 * with count == 0, so let's assert that
2226 g_assert(cf->count > 0);
2227 progbar_val = (gfloat) progbar_count / cf->count;
2229 if (progbar != NULL) {
2230 g_snprintf(progbar_status_str, sizeof(progbar_status_str),
2231 "%4u of %u packets", progbar_count, cf->count);
2232 update_progress_dlg(progbar, progbar_val, progbar_status_str);
2235 progbar_nextstep += progbar_quantum;
2238 if (progbar_stop_flag) {
2239 /* Well, the user decided to abort the operation. Just stop,
2240 and arrange to return PSP_STOPPED to our caller, so they know
2241 it was stopped explicitly. */
2248 if (range != NULL) {
2249 /* do we have to process this packet? */
2250 process_this = packet_range_process_packet(range, fdata);
2251 if (process_this == range_process_next) {
2252 /* this packet uninteresting, continue with next one */
2254 } else if (process_this == range_processing_finished) {
2255 /* all interesting packets processed, stop the loop */
2260 /* Get the packet */
2261 if (!cf_read_frame_r(cf, fdata, &pseudo_header, pd)) {
2262 /* Attempt to get the packet failed. */
2266 /* Process the packet */
2267 if (!callback(cf, fdata, &pseudo_header, pd, callback_args)) {
2268 /* Callback failed. We assume it reported the error appropriately. */
2274 /* We're done printing the packets; destroy the progress bar if
2276 if (progbar != NULL)
2277 destroy_progress_dlg(progbar);
2283 gboolean construct_protocol_tree;
2285 } retap_callback_args_t;
2288 retap_packet(capture_file *cf _U_, frame_data *fdata,
2289 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2292 retap_callback_args_t *args = argsp;
2295 epan_dissect_init(&edt, args->construct_protocol_tree, FALSE);
2296 tap_queue_init(&edt);
2297 epan_dissect_run(&edt, pseudo_header, pd, fdata, args->cinfo);
2298 tap_push_tapped_queue(&edt);
2299 epan_dissect_cleanup(&edt);
2305 cf_retap_packets(capture_file *cf)
2307 packet_range_t range;
2308 retap_callback_args_t callback_args;
2309 gboolean filtering_tap_listeners;
2312 /* Do we have any tap listeners with filters? */
2313 filtering_tap_listeners = have_filtering_tap_listeners();
2315 tap_flags = union_of_tap_listener_flags();
2317 /* If any tap listeners have filters, or require the protocol tree,
2318 construct the protocol tree. */
2319 callback_args.construct_protocol_tree = filtering_tap_listeners ||
2320 (tap_flags & TL_REQUIRES_PROTO_TREE);
2322 /* If any tap listeners require the columns, construct them. */
2323 callback_args.cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
2325 /* Reset the tap listeners. */
2326 reset_tap_listeners();
2328 /* Iterate through the list of packets, dissecting all packets and
2329 re-running the taps. */
2330 packet_range_init(&range, cf);
2331 packet_range_process_init(&range);
2332 switch (process_specified_packets(cf, &range, "Recalculating statistics on",
2333 "all packets", TRUE, retap_packet,
2336 /* Completed successfully. */
2340 /* Well, the user decided to abort the refiltering.
2341 Return CF_READ_ABORTED so our caller knows they did that. */
2342 return CF_READ_ABORTED;
2345 /* Error while retapping. */
2346 return CF_READ_ERROR;
2349 g_assert_not_reached();
2354 print_args_t *print_args;
2355 gboolean print_header_line;
2356 char *header_line_buf;
2357 int header_line_buf_len;
2358 gboolean print_formfeed;
2359 gboolean print_separator;
2363 int num_visible_cols;
2365 } print_callback_args_t;
2368 print_packet(capture_file *cf, frame_data *fdata,
2369 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2372 print_callback_args_t *args = argsp;
2379 gboolean proto_tree_needed;
2380 char bookmark_name[9+10+1]; /* "__frameNNNNNNNNNN__\0" */
2381 char bookmark_title[6+10+1]; /* "Frame NNNNNNNNNN__\0" */
2383 /* Create the protocol tree, and make it visible, if we're printing
2384 the dissection or the hex data.
2385 XXX - do we need it if we're just printing the hex data? */
2387 args->print_args->print_dissections != print_dissections_none || args->print_args->print_hex || have_custom_cols(&cf->cinfo);
2388 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2390 /* Fill in the column information if we're printing the summary
2392 if (args->print_args->print_summary) {
2393 col_custom_prime_edt(&edt, &cf->cinfo);
2394 epan_dissect_run(&edt, pseudo_header, pd, fdata, &cf->cinfo);
2395 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2397 epan_dissect_run(&edt, pseudo_header, pd, fdata, NULL);
2399 if (args->print_formfeed) {
2400 if (!new_page(args->print_args->stream))
2403 if (args->print_separator) {
2404 if (!print_line(args->print_args->stream, 0, ""))
2410 * We generate bookmarks, if the output format supports them.
2411 * The name is "__frameN__".
2413 g_snprintf(bookmark_name, sizeof bookmark_name, "__frame%u__", fdata->num);
2415 if (args->print_args->print_summary) {
2416 if (args->print_header_line) {
2417 if (!print_line(args->print_args->stream, 0, args->header_line_buf))
2419 args->print_header_line = FALSE; /* we might not need to print any more */
2421 cp = &args->line_buf[0];
2423 for (i = 0; i < args->num_visible_cols; i++) {
2424 /* Find the length of the string for this column. */
2425 column_len = (int) strlen(cf->cinfo.col_data[args->visible_cols[i]]);
2426 if (args->col_widths[i] > column_len)
2427 column_len = args->col_widths[i];
2429 /* Make sure there's room in the line buffer for the column; if not,
2430 double its length. */
2431 line_len += column_len + 1; /* "+1" for space */
2432 if (line_len > args->line_buf_len) {
2433 cp_off = (int) (cp - args->line_buf);
2434 args->line_buf_len = 2 * line_len;
2435 args->line_buf = g_realloc(args->line_buf, args->line_buf_len + 1);
2436 cp = args->line_buf + cp_off;
2439 /* Right-justify the packet number column. */
2440 if (cf->cinfo.col_fmt[args->visible_cols[i]] == COL_NUMBER)
2441 g_snprintf(cp, column_len+1, "%*s", args->col_widths[i], cf->cinfo.col_data[args->visible_cols[i]]);
2443 g_snprintf(cp, column_len+1, "%-*s", args->col_widths[i], cf->cinfo.col_data[args->visible_cols[i]]);
2445 if (i != args->num_visible_cols - 1)
2451 * Generate a bookmark, using the summary line as the title.
2453 if (!print_bookmark(args->print_args->stream, bookmark_name,
2457 if (!print_line(args->print_args->stream, 0, args->line_buf))
2461 * Generate a bookmark, using "Frame N" as the title, as we're not
2462 * printing the summary line.
2464 g_snprintf(bookmark_title, sizeof bookmark_title, "Frame %u", fdata->num);
2465 if (!print_bookmark(args->print_args->stream, bookmark_name,
2468 } /* if (print_summary) */
2470 if (args->print_args->print_dissections != print_dissections_none) {
2471 if (args->print_args->print_summary) {
2472 /* Separate the summary line from the tree with a blank line. */
2473 if (!print_line(args->print_args->stream, 0, ""))
2477 /* Print the information in that tree. */
2478 if (!proto_tree_print(args->print_args, &edt, args->print_args->stream))
2481 /* Print a blank line if we print anything after this (aka more than one packet). */
2482 args->print_separator = TRUE;
2484 /* Print a header line if we print any more packet summaries */
2485 args->print_header_line = TRUE;
2488 if (args->print_args->print_hex) {
2489 /* Print the full packet data as hex. */
2490 if (!print_hex_data(args->print_args->stream, &edt))
2493 /* Print a blank line if we print anything after this (aka more than one packet). */
2494 args->print_separator = TRUE;
2496 /* Print a header line if we print any more packet summaries */
2497 args->print_header_line = TRUE;
2498 } /* if (args->print_args->print_dissections != print_dissections_none) */
2500 epan_dissect_cleanup(&edt);
2502 /* do we want to have a formfeed between each packet from now on? */
2503 if (args->print_args->print_formfeed) {
2504 args->print_formfeed = TRUE;
2510 epan_dissect_cleanup(&edt);
2515 cf_print_packets(capture_file *cf, print_args_t *print_args)
2517 print_callback_args_t callback_args;
2520 int i, cp_off, column_len, line_len;
2521 int num_visible_col = 0, last_visible_col = 0, visible_col_count;
2526 callback_args.print_args = print_args;
2527 callback_args.print_header_line = TRUE;
2528 callback_args.header_line_buf = NULL;
2529 callback_args.header_line_buf_len = 256;
2530 callback_args.print_formfeed = FALSE;
2531 callback_args.print_separator = FALSE;
2532 callback_args.line_buf = NULL;
2533 callback_args.line_buf_len = 256;
2534 callback_args.col_widths = NULL;
2535 callback_args.num_visible_cols = 0;
2536 callback_args.visible_cols = NULL;
2538 if (!print_preamble(print_args->stream, cf->filename)) {
2539 destroy_print_stream(print_args->stream);
2540 return CF_PRINT_WRITE_ERROR;
2543 if (print_args->print_summary) {
2544 /* We're printing packet summaries. Allocate the header line buffer
2545 and get the column widths. */
2546 callback_args.header_line_buf = g_malloc(callback_args.header_line_buf_len + 1);
2548 /* Find the number of visible columns and the last visible column */
2549 for (i = 0; i < prefs.num_cols; i++) {
2551 clp = g_list_nth(prefs.col_list, i);
2552 if (clp == NULL) /* Sanity check, Invalid column requested */
2555 cfmt = (fmt_data *) clp->data;
2556 if (cfmt->visible) {
2558 last_visible_col = i;
2562 /* Find the widths for each of the columns - maximum of the
2563 width of the title and the width of the data - and construct
2564 a buffer with a line containing the column titles. */
2565 callback_args.num_visible_cols = num_visible_col;
2566 callback_args.col_widths = (gint *) g_malloc(sizeof(gint) * num_visible_col);
2567 callback_args.visible_cols = (gint *) g_malloc(sizeof(gint) * num_visible_col);
2568 cp = &callback_args.header_line_buf[0];
2570 visible_col_count = 0;
2571 for (i = 0; i < cf->cinfo.num_cols; i++) {
2573 clp = g_list_nth(prefs.col_list, i);
2574 if (clp == NULL) /* Sanity check, Invalid column requested */
2577 cfmt = (fmt_data *) clp->data;
2578 if (cfmt->visible == FALSE)
2581 /* Save the order of visible columns */
2582 callback_args.visible_cols[visible_col_count] = i;
2584 /* Don't pad the last column. */
2585 if (i == last_visible_col)
2586 callback_args.col_widths[visible_col_count] = 0;
2588 callback_args.col_widths[visible_col_count] = (gint) strlen(cf->cinfo.col_title[i]);
2589 data_width = get_column_char_width(get_column_format(i));
2590 if (data_width > callback_args.col_widths[visible_col_count])
2591 callback_args.col_widths[visible_col_count] = data_width;
2594 /* Find the length of the string for this column. */
2595 column_len = (int) strlen(cf->cinfo.col_title[i]);
2596 if (callback_args.col_widths[i] > column_len)
2597 column_len = callback_args.col_widths[visible_col_count];
2599 /* Make sure there's room in the line buffer for the column; if not,
2600 double its length. */
2601 line_len += column_len + 1; /* "+1" for space */
2602 if (line_len > callback_args.header_line_buf_len) {
2603 cp_off = (int) (cp - callback_args.header_line_buf);
2604 callback_args.header_line_buf_len = 2 * line_len;
2605 callback_args.header_line_buf = g_realloc(callback_args.header_line_buf,
2606 callback_args.header_line_buf_len + 1);
2607 cp = callback_args.header_line_buf + cp_off;
2610 /* Right-justify the packet number column. */
2611 /* if (cf->cinfo.col_fmt[i] == COL_NUMBER)
2612 g_snprintf(cp, column_len+1, "%*s", callback_args.col_widths[visible_col_count], cf->cinfo.col_title[i]);
2614 g_snprintf(cp, column_len+1, "%-*s", callback_args.col_widths[visible_col_count], cf->cinfo.col_title[i]);
2616 if (i != cf->cinfo.num_cols - 1)
2619 visible_col_count++;
2623 /* Now start out the main line buffer with the same length as the
2624 header line buffer. */
2625 callback_args.line_buf_len = callback_args.header_line_buf_len;
2626 callback_args.line_buf = g_malloc(callback_args.line_buf_len + 1);
2627 } /* if (print_summary) */
2629 /* Iterate through the list of packets, printing the packets we were
2631 ret = process_specified_packets(cf, &print_args->range, "Printing",
2632 "selected packets", TRUE, print_packet,
2635 g_free(callback_args.header_line_buf);
2636 g_free(callback_args.line_buf);
2637 g_free(callback_args.col_widths);
2638 g_free(callback_args.visible_cols);
2643 /* Completed successfully. */
2647 /* Well, the user decided to abort the printing.
2649 XXX - note that what got generated before they did that
2650 will get printed if we're piping to a print program; we'd
2651 have to write to a file and then hand that to the print
2652 program to make it actually not print anything. */
2656 /* Error while printing.
2658 XXX - note that what got generated before they did that
2659 will get printed if we're piping to a print program; we'd
2660 have to write to a file and then hand that to the print
2661 program to make it actually not print anything. */
2662 destroy_print_stream(print_args->stream);
2663 return CF_PRINT_WRITE_ERROR;
2666 if (!print_finale(print_args->stream)) {
2667 destroy_print_stream(print_args->stream);
2668 return CF_PRINT_WRITE_ERROR;
2671 if (!destroy_print_stream(print_args->stream))
2672 return CF_PRINT_WRITE_ERROR;
2678 write_pdml_packet(capture_file *cf _U_, frame_data *fdata,
2679 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2685 /* Create the protocol tree, but don't fill in the column information. */
2686 epan_dissect_init(&edt, TRUE, TRUE);
2687 epan_dissect_run(&edt, pseudo_header, pd, fdata, NULL);
2689 /* Write out the information in that tree. */
2690 proto_tree_write_pdml(&edt, fh);
2692 epan_dissect_cleanup(&edt);
2698 cf_write_pdml_packets(capture_file *cf, print_args_t *print_args)
2703 fh = ws_fopen(print_args->file, "w");
2705 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2707 write_pdml_preamble(fh, cf->filename);
2710 return CF_PRINT_WRITE_ERROR;
2713 /* Iterate through the list of packets, printing the packets we were
2715 ret = process_specified_packets(cf, &print_args->range, "Writing PDML",
2716 "selected packets", TRUE,
2717 write_pdml_packet, fh);
2722 /* Completed successfully. */
2726 /* Well, the user decided to abort the printing. */
2730 /* Error while printing. */
2732 return CF_PRINT_WRITE_ERROR;
2735 write_pdml_finale(fh);
2738 return CF_PRINT_WRITE_ERROR;
2741 /* XXX - check for an error */
2748 write_psml_packet(capture_file *cf, frame_data *fdata,
2749 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2754 gboolean proto_tree_needed;
2756 /* Fill in the column information, only create the protocol tree
2757 if having custom columns. */
2758 proto_tree_needed = have_custom_cols(&cf->cinfo);
2759 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2760 col_custom_prime_edt(&edt, &cf->cinfo);
2761 epan_dissect_run(&edt, pseudo_header, pd, fdata, &cf->cinfo);
2762 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2764 /* Write out the information in that tree. */
2765 proto_tree_write_psml(&edt, fh);
2767 epan_dissect_cleanup(&edt);
2773 cf_write_psml_packets(capture_file *cf, print_args_t *print_args)
2778 fh = ws_fopen(print_args->file, "w");
2780 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2782 write_psml_preamble(fh);
2785 return CF_PRINT_WRITE_ERROR;
2788 /* Iterate through the list of packets, printing the packets we were
2790 ret = process_specified_packets(cf, &print_args->range, "Writing PSML",
2791 "selected packets", TRUE,
2792 write_psml_packet, fh);
2797 /* Completed successfully. */
2801 /* Well, the user decided to abort the printing. */
2805 /* Error while printing. */
2807 return CF_PRINT_WRITE_ERROR;
2810 write_psml_finale(fh);
2813 return CF_PRINT_WRITE_ERROR;
2816 /* XXX - check for an error */
2823 write_csv_packet(capture_file *cf, frame_data *fdata,
2824 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2829 gboolean proto_tree_needed;
2831 /* Fill in the column information, only create the protocol tree
2832 if having custom columns. */
2833 proto_tree_needed = have_custom_cols(&cf->cinfo);
2834 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2835 col_custom_prime_edt(&edt, &cf->cinfo);
2836 epan_dissect_run(&edt, pseudo_header, pd, fdata, &cf->cinfo);
2837 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2839 /* Write out the information in that tree. */
2840 proto_tree_write_csv(&edt, fh);
2842 epan_dissect_cleanup(&edt);
2848 cf_write_csv_packets(capture_file *cf, print_args_t *print_args)
2853 fh = ws_fopen(print_args->file, "w");
2855 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2857 write_csv_preamble(fh);
2860 return CF_PRINT_WRITE_ERROR;
2863 /* Iterate through the list of packets, printing the packets we were
2865 ret = process_specified_packets(cf, &print_args->range, "Writing CSV",
2866 "selected packets", TRUE,
2867 write_csv_packet, fh);
2872 /* Completed successfully. */
2876 /* Well, the user decided to abort the printing. */
2880 /* Error while printing. */
2882 return CF_PRINT_WRITE_ERROR;
2885 write_csv_finale(fh);
2888 return CF_PRINT_WRITE_ERROR;
2891 /* XXX - check for an error */
2898 write_carrays_packet(capture_file *cf _U_, frame_data *fdata,
2899 union wtap_pseudo_header *pseudo_header,
2900 const guint8 *pd, void *argsp)
2905 epan_dissect_init(&edt, TRUE, TRUE);
2906 epan_dissect_run(&edt, pseudo_header, pd, fdata, NULL);
2907 proto_tree_write_carrays(fdata->num, fh, &edt);
2908 epan_dissect_cleanup(&edt);
2914 cf_write_carrays_packets(capture_file *cf, print_args_t *print_args)
2919 fh = ws_fopen(print_args->file, "w");
2922 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2924 write_carrays_preamble(fh);
2928 return CF_PRINT_WRITE_ERROR;
2931 /* Iterate through the list of packets, printing the packets we were
2933 ret = process_specified_packets(cf, &print_args->range,
2935 "selected packets", TRUE,
2936 write_carrays_packet, fh);
2939 /* Completed successfully. */
2942 /* Well, the user decided to abort the printing. */
2945 /* Error while printing. */
2947 return CF_PRINT_WRITE_ERROR;
2950 write_carrays_finale(fh);
2954 return CF_PRINT_WRITE_ERROR;
2962 cf_find_packet_protocol_tree(capture_file *cf, const char *string,
2963 search_direction dir)
2967 mdata.string = string;
2968 mdata.string_len = strlen(string);
2969 return find_packet(cf, match_protocol_tree, &mdata, dir);
2973 cf_find_string_protocol_tree(capture_file *cf, proto_tree *tree, match_data *mdata)
2975 mdata->frame_matched = FALSE;
2976 mdata->string = convert_string_case(cf->sfilter, cf->case_type);
2977 mdata->string_len = strlen(mdata->string);
2979 /* Iterate through all the nodes looking for matching text */
2980 proto_tree_children_foreach(tree, match_subtree_text, mdata);
2981 return mdata->frame_matched ? MR_MATCHED : MR_NOTMATCHED;
2985 match_protocol_tree(capture_file *cf, frame_data *fdata, void *criterion)
2987 match_data *mdata = criterion;
2990 /* Load the frame's data. */
2991 if (!cf_read_frame(cf, fdata)) {
2992 /* Attempt to get the packet failed. */
2996 /* Construct the protocol tree, including the displayed text */
2997 epan_dissect_init(&edt, TRUE, TRUE);
2998 /* We don't need the column information */
2999 epan_dissect_run(&edt, &cf->pseudo_header, cf->pd, fdata, NULL);
3001 /* Iterate through all the nodes, seeing if they have text that matches. */
3003 mdata->frame_matched = FALSE;
3004 proto_tree_children_foreach(edt.tree, match_subtree_text, mdata);
3005 epan_dissect_cleanup(&edt);
3006 return mdata->frame_matched ? MR_MATCHED : MR_NOTMATCHED;
3010 match_subtree_text(proto_node *node, gpointer data)
3012 match_data *mdata = (match_data *) data;
3013 const gchar *string = mdata->string;
3014 size_t string_len = mdata->string_len;
3015 capture_file *cf = mdata->cf;
3016 field_info *fi = PNODE_FINFO(node);
3017 gchar label_str[ITEM_LABEL_LENGTH];
3024 /* dissection with an invisible proto tree? */
3027 if (mdata->frame_matched) {
3028 /* We already had a match; don't bother doing any more work. */
3032 /* Don't match invisible entries. */
3033 if (PROTO_ITEM_IS_HIDDEN(node))
3036 /* was a free format label produced? */
3038 label_ptr = fi->rep->representation;
3040 /* no, make a generic label */
3041 label_ptr = label_str;
3042 proto_item_fill_label(fi, label_str);
3045 /* Does that label match? */
3046 label_len = strlen(label_ptr);
3047 for (i = 0; i < label_len; i++) {
3048 c_char = label_ptr[i];
3050 c_char = toupper(c_char);
3051 if (c_char == string[c_match]) {
3053 if (c_match == string_len) {
3054 /* No need to look further; we have a match */
3055 mdata->frame_matched = TRUE;
3063 /* Recurse into the subtree, if it exists */
3064 if (node->first_child != NULL)
3065 proto_tree_children_foreach(node, match_subtree_text, mdata);
3069 cf_find_packet_summary_line(capture_file *cf, const char *string,
3070 search_direction dir)
3074 mdata.string = string;
3075 mdata.string_len = strlen(string);
3076 return find_packet(cf, match_summary_line, &mdata, dir);
3080 match_summary_line(capture_file *cf, frame_data *fdata, void *criterion)
3082 match_data *mdata = criterion;
3083 const gchar *string = mdata->string;
3084 size_t string_len = mdata->string_len;
3086 const char *info_column;
3087 size_t info_column_len;
3088 match_result result = MR_NOTMATCHED;
3094 /* Load the frame's data. */
3095 if (!cf_read_frame(cf, fdata)) {
3096 /* Attempt to get the packet failed. */
3100 /* Don't bother constructing the protocol tree */
3101 epan_dissect_init(&edt, FALSE, FALSE);
3102 /* Get the column information */
3103 epan_dissect_run(&edt, &cf->pseudo_header, cf->pd, fdata, &cf->cinfo);
3105 /* Find the Info column */
3106 for (colx = 0; colx < cf->cinfo.num_cols; colx++) {
3107 if (cf->cinfo.fmt_matx[colx][COL_INFO]) {
3108 /* Found it. See if we match. */
3109 info_column = edt.pi.cinfo->col_data[colx];
3110 info_column_len = strlen(info_column);
3111 for (i = 0; i < info_column_len; i++) {
3112 c_char = info_column[i];
3114 c_char = toupper(c_char);
3115 if (c_char == string[c_match]) {
3117 if (c_match == string_len) {
3118 result = MR_MATCHED;
3127 epan_dissect_cleanup(&edt);
3134 } cbs_t; /* "Counted byte string" */
3137 cf_find_packet_data(capture_file *cf, const guint8 *string, size_t string_size,
3138 search_direction dir)
3143 info.data_len = string_size;
3145 /* String or hex search? */
3147 /* String search - what type of string? */
3148 switch (cf->scs_type) {
3150 case SCS_ASCII_AND_UNICODE:
3151 return find_packet(cf, match_ascii_and_unicode, &info, dir);
3154 return find_packet(cf, match_ascii, &info, dir);
3157 return find_packet(cf, match_unicode, &info, dir);
3160 g_assert_not_reached();
3164 return find_packet(cf, match_binary, &info, dir);
3168 match_ascii_and_unicode(capture_file *cf, frame_data *fdata, void *criterion)
3170 cbs_t *info = criterion;
3171 const guint8 *ascii_text = info->data;
3172 size_t textlen = info->data_len;
3173 match_result result;
3179 /* Load the frame's data. */
3180 if (!cf_read_frame(cf, fdata)) {
3181 /* Attempt to get the packet failed. */
3185 result = MR_NOTMATCHED;
3186 buf_len = fdata->pkt_len;
3188 while (i < buf_len) {
3191 c_char = toupper(c_char);
3192 if (c_char != '\0') {
3193 if (c_char == ascii_text[c_match]) {
3195 if (c_match == textlen) {
3196 result = MR_MATCHED;
3197 cf->search_pos = i; /* Save the position of the last character
3198 for highlighting the field. */
3203 g_assert(i>=c_match);
3204 i -= (guint32)c_match;
3214 match_ascii(capture_file *cf, frame_data *fdata, void *criterion)
3216 cbs_t *info = criterion;
3217 const guint8 *ascii_text = info->data;
3218 size_t textlen = info->data_len;
3219 match_result result;
3225 /* Load the frame's data. */
3226 if (!cf_read_frame(cf, fdata)) {
3227 /* Attempt to get the packet failed. */
3231 result = MR_NOTMATCHED;
3232 buf_len = fdata->pkt_len;
3234 while (i < buf_len) {
3237 c_char = toupper(c_char);
3238 if (c_char == ascii_text[c_match]) {
3240 if (c_match == textlen) {
3241 result = MR_MATCHED;
3242 cf->search_pos = i; /* Save the position of the last character
3243 for highlighting the field. */
3248 g_assert(i>=c_match);
3249 i -= (guint32)c_match;
3259 match_unicode(capture_file *cf, frame_data *fdata, void *criterion)
3261 cbs_t *info = criterion;
3262 const guint8 *ascii_text = info->data;
3263 size_t textlen = info->data_len;
3264 match_result result;
3270 /* Load the frame's data. */
3271 if (!cf_read_frame(cf, fdata)) {
3272 /* Attempt to get the packet failed. */
3276 result = MR_NOTMATCHED;
3277 buf_len = fdata->pkt_len;
3279 while (i < buf_len) {
3282 c_char = toupper(c_char);
3283 if (c_char == ascii_text[c_match]) {
3285 if (c_match == textlen) {
3286 result = MR_MATCHED;
3287 cf->search_pos = i; /* Save the position of the last character
3288 for highlighting the field. */
3294 g_assert(i>=(c_match*2));
3295 i -= (guint32)c_match*2;
3304 match_binary(capture_file *cf, frame_data *fdata, void *criterion)
3306 cbs_t *info = criterion;
3307 const guint8 *binary_data = info->data;
3308 size_t datalen = info->data_len;
3309 match_result result;
3314 /* Load the frame's data. */
3315 if (!cf_read_frame(cf, fdata)) {
3316 /* Attempt to get the packet failed. */
3320 result = MR_NOTMATCHED;
3321 buf_len = fdata->pkt_len;
3323 while (i < buf_len) {
3324 if (cf->pd[i] == binary_data[c_match]) {
3326 if (c_match == datalen) {
3327 result = MR_MATCHED;
3328 cf->search_pos = i; /* Save the position of the last character
3329 for highlighting the field. */
3334 g_assert(i>=c_match);
3335 i -= (guint32)c_match;
3344 cf_find_packet_dfilter(capture_file *cf, dfilter_t *sfcode,
3345 search_direction dir)
3347 return find_packet(cf, match_dfilter, sfcode, dir);
3351 cf_find_packet_dfilter_string(capture_file *cf, const char *filter,
3352 search_direction dir)
3357 if (!dfilter_compile(filter, &sfcode)) {
3359 * XXX - this shouldn't happen, as the filter string is machine
3364 if (sfcode == NULL) {
3366 * XXX - this shouldn't happen, as the filter string is machine
3371 result = find_packet(cf, match_dfilter, sfcode, dir);
3372 dfilter_free(sfcode);
3377 match_dfilter(capture_file *cf, frame_data *fdata, void *criterion)
3379 dfilter_t *sfcode = criterion;
3381 match_result result;
3383 /* Load the frame's data. */
3384 if (!cf_read_frame(cf, fdata)) {
3385 /* Attempt to get the packet failed. */
3389 epan_dissect_init(&edt, TRUE, FALSE);
3390 epan_dissect_prime_dfilter(&edt, sfcode);
3391 epan_dissect_run(&edt, &cf->pseudo_header, cf->pd, fdata, NULL);
3392 result = dfilter_apply_edt(sfcode, &edt) ? MR_MATCHED : MR_NOTMATCHED;
3393 epan_dissect_cleanup(&edt);
3398 cf_find_packet_marked(capture_file *cf, search_direction dir)
3400 return find_packet(cf, match_marked, NULL, dir);
3404 match_marked(capture_file *cf _U_, frame_data *fdata, void *criterion _U_)
3406 return fdata->flags.marked ? MR_MATCHED : MR_NOTMATCHED;
3410 cf_find_packet_time_reference(capture_file *cf, search_direction dir)
3412 return find_packet(cf, match_time_reference, NULL, dir);
3416 match_time_reference(capture_file *cf _U_, frame_data *fdata, void *criterion _U_)
3418 return fdata->flags.ref_time ? MR_MATCHED : MR_NOTMATCHED;
3422 find_packet(capture_file *cf,
3423 match_result (*match_function)(capture_file *, frame_data *, void *),
3424 void *criterion, search_direction dir)
3426 frame_data *start_fd;
3429 frame_data *new_fd = NULL;
3430 progdlg_t *progbar = NULL;
3435 GTimeVal start_time;
3436 gchar status_str[100];
3437 int progbar_nextstep;
3438 int progbar_quantum;
3440 match_result result;
3442 start_fd = cf->current_frame;
3443 if (start_fd != NULL) {
3444 /* Iterate through the list of packets, starting at the packet we've
3445 picked, calling a routine to run the filter on the packet, see if
3446 it matches, and stop if so. */
3448 framenum = start_fd->num;
3450 /* Update the progress bar when it gets to this value. */
3451 progbar_nextstep = 0;
3452 /* When we reach the value that triggers a progress bar update,
3453 bump that value by this amount. */
3454 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
3455 /* Progress so far. */
3459 g_get_current_time(&start_time);
3461 title = cf->sfilter?cf->sfilter:"";
3463 /* Create the progress bar if necessary.
3464 We check on every iteration of the loop, so that it takes no
3465 longer than the standard time to create it (otherwise, for a
3466 large file, we might take considerably longer than that standard
3467 time in order to get to the next progress bar step). */
3468 if (progbar == NULL)
3469 progbar = delayed_create_progress_dlg(cf->window, "Searching", title,
3470 FALSE, &stop_flag, &start_time, progbar_val);
3472 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
3473 when we update it, we have to run the GTK+ main loop to get it
3474 to repaint what's pending, and doing so may involve an "ioctl()"
3475 to see if there's any pending input from an X server, and doing
3476 that for every packet can be costly, especially on a big file. */
3477 if (count >= progbar_nextstep) {
3478 /* let's not divide by zero. I should never be started
3479 * with count == 0, so let's assert that
3481 g_assert(cf->count > 0);
3483 progbar_val = (gfloat) count / cf->count;
3485 if (progbar != NULL) {
3486 g_snprintf(status_str, sizeof(status_str),
3487 "%4u of %u packets", count, cf->count);
3488 update_progress_dlg(progbar, progbar_val, status_str);
3491 progbar_nextstep += progbar_quantum;
3495 /* Well, the user decided to abort the search. Go back to the
3496 frame where we started. */
3501 /* Go past the current frame. */
3502 if (dir == SD_BACKWARD) {
3503 /* Go on to the previous frame. */
3504 if (framenum == 1) {
3506 * XXX - other apps have a bit more of a detailed message
3507 * for this, and instead of offering "OK" and "Cancel",
3508 * they offer things such as "Continue" and "Cancel";
3509 * we need an API for popping up alert boxes with
3510 * {Verb} and "Cancel".
3513 if (prefs.gui_find_wrap)
3515 statusbar_push_temporary_msg("Search reached the beginning. Continuing at end.");
3516 framenum = cf->count; /* wrap around */
3520 statusbar_push_temporary_msg("Search reached the beginning.");
3521 framenum = start_fd->num; /* stay on previous packet */
3526 /* Go on to the next frame. */
3527 if (framenum == cf->count) {
3528 if (prefs.gui_find_wrap)
3530 statusbar_push_temporary_msg("Search reached the end. Continuing at beginning.");
3531 framenum = 1; /* wrap around */
3535 statusbar_push_temporary_msg("Search reached the end.");
3536 framenum = start_fd->num; /* stay on previous packet */
3541 fdata = frame_data_sequence_find(cf->frames, framenum);
3545 /* Is this packet in the display? */
3546 if (fdata->flags.passed_dfilter) {
3547 /* Yes. Does it match the search criterion? */
3548 result = (*match_function)(cf, fdata, criterion);
3549 if (result == MR_ERROR) {
3550 /* Error; our caller has reported the error. Go back to the frame
3551 where we started. */
3554 } else if (result == MR_MATCHED) {
3555 /* Yes. Go to the new frame. */
3561 if (fdata == start_fd) {
3562 /* We're back to the frame we were on originally, and that frame
3563 doesn't match the search filter. The search failed. */
3568 /* We're done scanning the packets; destroy the progress bar if it
3570 if (progbar != NULL)
3571 destroy_progress_dlg(progbar);
3574 if (new_fd != NULL) {
3575 /* Find and select */
3576 cf->search_in_progress = TRUE;
3577 found = packet_list_select_row_from_data(new_fd);
3578 cf->search_in_progress = FALSE;
3579 cf->search_pos = 0; /* Reset the position */
3581 /* We didn't find a row corresponding to this frame.
3582 This means that the frame isn't being displayed currently,
3583 so we can't select it. */
3584 simple_message_box(ESD_TYPE_INFO, NULL,
3585 "The capture file is probably not fully dissected.",
3586 "End of capture exceeded!");
3589 return TRUE; /* success */
3591 return FALSE; /* failure */
3595 cf_goto_frame(capture_file *cf, guint fnumber)
3599 fdata = frame_data_sequence_find(cf->frames, fnumber);
3601 if (fdata == NULL) {
3602 /* we didn't find a packet with that packet number */
3603 statusbar_push_temporary_msg("There is no packet number %u.", fnumber);
3604 return FALSE; /* we failed to go to that packet */
3606 if (!fdata->flags.passed_dfilter) {
3607 /* that packet currently isn't displayed */
3608 /* XXX - add it to the set of displayed packets? */
3609 statusbar_push_temporary_msg("Packet number %u isn't displayed.", fnumber);
3610 return FALSE; /* we failed to go to that packet */
3613 if (!packet_list_select_row_from_data(fdata)) {
3614 /* We didn't find a row corresponding to this frame.
3615 This means that the frame isn't being displayed currently,
3616 so we can't select it. */
3617 simple_message_box(ESD_TYPE_INFO, NULL,
3618 "The capture file is probably not fully dissected.",
3619 "End of capture exceeded!");
3622 return TRUE; /* we got to that packet */
3626 cf_goto_top_frame(void)
3628 /* Find and select */
3629 packet_list_select_first_row();
3630 return TRUE; /* we got to that packet */
3634 cf_goto_bottom_frame(void)
3636 /* Find and select */
3637 packet_list_select_last_row();
3638 return TRUE; /* we got to that packet */
3642 * Go to frame specified by currently selected protocol tree item.
3645 cf_goto_framenum(capture_file *cf)
3647 header_field_info *hfinfo;
3650 if (cf->finfo_selected) {
3651 hfinfo = cf->finfo_selected->hfinfo;
3653 if (hfinfo->type == FT_FRAMENUM) {
3654 framenum = fvalue_get_uinteger(&cf->finfo_selected->value);
3656 return cf_goto_frame(cf, framenum);
3663 /* Select the packet on a given row. */
3665 cf_select_packet(capture_file *cf, int row)
3667 epan_dissect_t *old_edt;
3670 /* Get the frame data struct pointer for this frame */
3671 fdata = packet_list_get_row_data(row);
3673 if (fdata == NULL) {
3674 /* XXX - if a GtkCList's selection mode is GTK_SELECTION_BROWSE, when
3675 the first entry is added to it by "real_insert_row()", that row
3676 is selected (see "real_insert_row()", in "ui/gtk/gtkclist.c", in both
3677 our version and the vanilla GTK+ version).
3679 This means that a "select-row" signal is emitted; this causes
3680 "packet_list_select_cb()" to be called, which causes "cf_select_packet()"
3683 "cf_select_packet()" fetches, above, the data associated with the
3684 row that was selected; however, as "gtk_clist_append()", which
3685 called "real_insert_row()", hasn't yet returned, we haven't yet
3686 associated any data with that row, so we get back a null pointer.
3688 We can't assume that there's only one frame in the frame list,
3689 either, as we may be filtering the display.
3691 We therefore assume that, if "row" is 0, i.e. the first row
3692 is being selected, and "cf->first_displayed" equals
3693 "cf->last_displayed", i.e. there's only one frame being
3694 displayed, that frame is the frame we want.
3696 This means we have to set "cf->first_displayed" and
3697 "cf->last_displayed" before adding the row to the
3698 GtkCList; see the comment in "add_packet_to_packet_list()". */
3700 if (row == 0 && cf->first_displayed == cf->last_displayed)
3701 fdata = frame_data_sequence_find(cf->frames, cf->first_displayed);
3704 /* If fdata _still_ isn't set simply give up. */
3705 if (fdata == NULL) {
3709 /* Get the data in that frame. */
3710 if (!cf_read_frame (cf, fdata)) {
3714 /* Record that this frame is the current frame. */
3715 cf->current_frame = fdata;
3716 cf->current_row = row;
3719 /* Create the logical protocol tree. */
3720 /* We don't need the columns here. */
3721 cf->edt = epan_dissect_new(TRUE, TRUE);
3723 tap_build_interesting(cf->edt);
3724 epan_dissect_run(cf->edt, &cf->pseudo_header, cf->pd, cf->current_frame,
3727 dfilter_macro_build_ftv_cache(cf->edt->tree);
3729 cf_callback_invoke(cf_cb_packet_selected, cf);
3731 if (old_edt != NULL)
3732 epan_dissect_free(old_edt);
3736 /* Unselect the selected packet, if any. */
3738 cf_unselect_packet(capture_file *cf)
3740 epan_dissect_t *old_edt = cf->edt;
3744 /* No packet is selected. */
3745 cf->current_frame = NULL;
3746 cf->current_row = 0;
3748 cf_callback_invoke(cf_cb_packet_unselected, cf);
3750 /* No protocol tree means no selected field. */
3751 cf_unselect_field(cf);
3753 /* Destroy the epan_dissect_t for the unselected packet. */
3754 if (old_edt != NULL)
3755 epan_dissect_free(old_edt);
3758 /* Unset the selected protocol tree field, if any. */
3760 cf_unselect_field(capture_file *cf)
3762 cf->finfo_selected = NULL;
3764 cf_callback_invoke(cf_cb_field_unselected, cf);
3768 * Mark a particular frame.
3771 cf_mark_frame(capture_file *cf, frame_data *frame)
3773 if (! frame->flags.marked) {
3774 frame->flags.marked = TRUE;
3775 if (cf->count > cf->marked_count)
3781 * Unmark a particular frame.
3784 cf_unmark_frame(capture_file *cf, frame_data *frame)
3786 if (frame->flags.marked) {
3787 frame->flags.marked = FALSE;
3788 if (cf->marked_count > 0)
3794 * Ignore a particular frame.
3797 cf_ignore_frame(capture_file *cf, frame_data *frame)
3799 if (! frame->flags.ignored) {
3800 frame->flags.ignored = TRUE;
3801 if (cf->count > cf->ignored_count)
3802 cf->ignored_count++;
3807 * Un-ignore a particular frame.
3810 cf_unignore_frame(capture_file *cf, frame_data *frame)
3812 if (frame->flags.ignored) {
3813 frame->flags.ignored = FALSE;
3814 if (cf->ignored_count > 0)
3815 cf->ignored_count--;
3820 * Read the comment in SHB block
3824 cf_read_shb_comment(capture_file *cf)
3826 wtapng_section_t *shb_inf;
3827 const gchar *temp_str;
3829 /* Get info from SHB */
3830 shb_inf = wtap_file_get_shb_info(cf->wth);
3831 if (shb_inf == NULL)
3833 temp_str = shb_inf->opt_comment;
3841 cf_update_capture_comment(capture_file *cf, gchar *comment)
3843 wtapng_section_t *shb_inf;
3845 /* Get info from SHB */
3846 shb_inf = wtap_file_get_shb_info(cf->wth);
3848 /* See if the comment has changed or not */
3849 if (shb_inf && shb_inf->opt_comment) {
3850 if (strcmp(shb_inf->opt_comment, comment) == 0) {
3859 /* The comment has changed, let's update it */
3860 wtap_write_shb_comment(cf->wth, comment);
3861 /* Mark the file as having unsaved changes */
3862 cf->unsaved_changes = TRUE;
3866 cf_update_packet_comment(capture_file *cf, frame_data *fdata, gchar *comment)
3868 if (fdata->opt_comment != NULL) {
3869 /* OK, remove the old comment. */
3870 g_free(fdata->opt_comment);
3871 fdata->opt_comment = NULL;
3872 cf->packet_comment_count--;
3874 if (comment != NULL) {
3875 /* Add the new comment. */
3876 fdata->opt_comment = comment;
3877 cf->packet_comment_count++;
3880 /* OK, we have unsaved changes. */
3881 cf->unsaved_changes = TRUE;
3885 * Does this capture file have any comments?
3888 cf_has_comments(capture_file *cf)
3890 return (cf_read_shb_comment(cf) != NULL || cf->packet_comment_count != 0);
3897 } save_callback_args_t;
3900 * Save a capture to a file, in a particular format, saving either
3901 * all packets, all currently-displayed packets, or all marked packets.
3903 * Returns TRUE if it succeeds, FALSE otherwise; if it fails, it pops
3904 * up a message box for the failure.
3907 save_packet(capture_file *cf _U_, frame_data *fdata,
3908 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
3911 save_callback_args_t *args = argsp;
3912 struct wtap_pkthdr hdr;
3914 gchar *display_basename;
3916 /* init the wtap header for saving */
3917 /* XXX - these are the only flags that correspond to data that we have
3918 in the frame_data structure and that matter on a per-packet basis.
3920 For WTAP_HAS_CAP_LEN, either the file format has separate "captured"
3921 and "on the wire" lengths, or it doesn't.
3923 For WTAP_HAS_DROP_COUNT, Wiretap doesn't actually supply the value
3926 For WTAP_HAS_PACK_FLAGS, we currently don't save the FCS length
3927 from the packet flags. */
3928 hdr.presence_flags = 0;
3929 if (fdata->flags.has_ts)
3930 hdr.presence_flags |= WTAP_HAS_TS;
3931 if (fdata->flags.has_ts)
3932 hdr.presence_flags |= WTAP_HAS_INTERFACE_ID;
3933 hdr.ts.secs = fdata->abs_ts.secs;
3934 hdr.ts.nsecs = fdata->abs_ts.nsecs;
3935 hdr.caplen = fdata->cap_len;
3936 hdr.len = fdata->pkt_len;
3937 hdr.pkt_encap = fdata->lnk_t;
3939 hdr.interface_id = fdata->interface_id; /* identifier of the interface. */
3941 hdr.opt_comment = fdata->opt_comment; /* NULL if not available */
3944 hdr.pack_flags = /* XXX - 0 for now (any value for "we don't have it"?) */
3946 /* and save the packet */
3947 if (!wtap_dump(args->pdh, &hdr, pseudo_header, pd, &err)) {
3949 /* Wiretap error. */
3952 case WTAP_ERR_UNSUPPORTED_ENCAP:
3954 * This is a problem with the particular frame we're writing;
3955 * note that, and give the frame number.
3957 simple_error_message_box(
3958 "Frame %u has a network type that can't be saved in a \"%s\" file.",
3959 fdata->num, wtap_file_type_string(args->file_type));
3963 display_basename = g_filename_display_basename(args->fname);
3964 simple_error_message_box(
3965 "An error occurred while writing to the file \"%s\": %s.",
3966 display_basename, wtap_strerror(err));
3967 g_free(display_basename);
3972 write_failure_alert_box(args->fname, err);
3980 * Can this capture file be written out in any format using Wiretap
3981 * rather than by copying the raw data?
3984 cf_can_write_with_wiretap(capture_file *cf)
3988 for (ft = 0; ft < WTAP_NUM_FILE_TYPES; ft++) {
3989 /* To save a file with Wiretap, Wiretap has to handle that format,
3990 and its code to handle that format must be able to write a file
3991 with this file's encapsulation types. */
3992 if (wtap_dump_can_write_encaps(ft, cf->linktypes)) {
3993 /* OK, we can write it out in this type. */
3998 /* No, we couldn't save it in any format. */
4003 * Quick scan to find packet offsets.
4005 static cf_read_status_t
4006 rescan_file(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
4008 const struct wtap_pkthdr *phdr;
4013 progdlg_t *volatile progbar = NULL;
4015 volatile gint64 size;
4016 volatile float progbar_val;
4017 GTimeVal start_time;
4018 gchar status_str[100];
4019 volatile gint64 progbar_nextstep;
4020 volatile gint64 progbar_quantum;
4023 volatile int count = 0;
4025 volatile int displayed_once = 0;
4028 /* Close the old handle. */
4029 wtap_close(cf->wth);
4031 /* Open the new file. */
4032 cf->wth = wtap_open_offline(fname, err, &err_info, TRUE);
4033 if (cf->wth == NULL) {
4034 cf_open_failure_alert_box(fname, *err, err_info, FALSE, 0);
4035 return CF_READ_ERROR;
4038 /* We're scanning a file whose contents should be the same as what
4039 we had before, so we don't discard dissection state etc.. */
4042 /* Set the file name because we need it to set the follow stream filter.
4043 XXX - is that still true? We need it for other reasons, though,
4045 cf->filename = g_strdup(fname);
4047 /* Indicate whether it's a permanent or temporary file. */
4048 cf->is_tempfile = is_tempfile;
4050 /* No user changes yet. */
4051 cf->unsaved_changes = FALSE;
4053 cf->cd_t = wtap_file_type(cf->wth);
4054 cf->linktypes = g_array_sized_new(FALSE, FALSE, (guint) sizeof(int), 1);
4056 cf->snap = wtap_snapshot_length(cf->wth);
4057 if (cf->snap == 0) {
4058 /* Snapshot length not known. */
4059 cf->has_snap = FALSE;
4060 cf->snap = WTAP_MAX_PACKET_SIZE;
4062 cf->has_snap = TRUE;
4064 name_ptr = g_filename_display_basename(cf->filename);
4066 cf_callback_invoke(cf_cb_file_rescan_started, cf);
4068 /* Record whether the file is compressed.
4069 XXX - do we know this at open time? */
4070 cf->iscompressed = wtap_iscompressed(cf->wth);
4072 /* Find the size of the file. */
4073 size = wtap_file_size(cf->wth, NULL);
4075 /* Update the progress bar when it gets to this value. */
4076 progbar_nextstep = 0;
4077 /* When we reach the value that triggers a progress bar update,
4078 bump that value by this amount. */
4080 progbar_quantum = size/N_PROGBAR_UPDATES;
4081 if (progbar_quantum < MIN_QUANTUM)
4082 progbar_quantum = MIN_QUANTUM;
4084 progbar_quantum = 0;
4085 /* Progress so far. */
4089 g_get_current_time(&start_time);
4092 phdr = wtap_phdr(cf->wth);
4093 while ((wtap_read(cf->wth, err, &err_info, &data_offset))) {
4095 fdata = frame_data_sequence_find(cf->frames, framenum);
4096 fdata->file_off = data_offset;
4099 file_pos = wtap_read_so_far(cf->wth);
4101 /* Create the progress bar if necessary.
4102 * Check whether it should be created or not every MIN_NUMBER_OF_PACKET
4104 if ((progbar == NULL) && !(count % MIN_NUMBER_OF_PACKET)) {
4105 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
4106 progbar = delayed_create_progress_dlg(cf->window, "Rescanning", name_ptr,
4107 TRUE, &stop_flag, &start_time, progbar_val);
4110 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
4111 when we update it, we have to run the GTK+ main loop to get it
4112 to repaint what's pending, and doing so may involve an "ioctl()"
4113 to see if there's any pending input from an X server, and doing
4114 that for every packet can be costly, especially on a big file. */
4115 if (file_pos >= progbar_nextstep) {
4116 if (progbar != NULL) {
4117 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
4118 /* update the packet bar content on the first run or frequently on very large files */
4120 if (progbar_quantum > 500000 || displayed_once == 0) {
4121 if ((auto_scroll_live || displayed_once == 0 || cf->displayed_count < 1000) && cf->count != 0) {
4123 packets_bar_update();
4126 #endif /* HAVE_LIBPCAP */
4127 update_progress_dlg(progbar, progbar_val, status_str);
4129 progbar_nextstep += progbar_quantum;
4134 /* Well, the user decided to abort the rescan. Sadly, as this
4135 isn't a reread, recovering is difficult, so we'll just
4136 close the current capture. */
4140 /* Add this packet's link-layer encapsulation type to cf->linktypes, if
4141 it's not already there.
4142 XXX - yes, this is O(N), so if every packet had a different
4143 link-layer encapsulation type, it'd be O(N^2) to read the file, but
4144 there are probably going to be a small number of encapsulation types
4146 cf_add_encapsulation_type(cf, phdr->pkt_encap);
4149 /* Free the display name */
4152 /* We're done reading the file; destroy the progress bar if it was created. */
4153 if (progbar != NULL)
4154 destroy_progress_dlg(progbar);
4156 /* We're done reading sequentially through the file. */
4157 cf->state = FILE_READ_DONE;
4159 /* Close the sequential I/O side, to free up memory it requires. */
4160 wtap_sequential_close(cf->wth);
4162 /* compute the time it took to load the file */
4163 compute_elapsed(&start_time);
4165 /* Set the file encapsulation type now; we don't know what it is until
4166 we've looked at all the packets, as we don't know until then whether
4167 there's more than one type (and thus whether it's
4168 WTAP_ENCAP_PER_PACKET). */
4169 cf->lnk_t = wtap_file_encap(cf->wth);
4171 cf_callback_invoke(cf_cb_file_rescan_finished, cf);
4174 /* Our caller will give up at this point. */
4175 return CF_READ_ABORTED;
4179 /* Put up a message box noting that the read failed somewhere along
4180 the line. Don't throw out the stuff we managed to read, though,
4184 case WTAP_ERR_UNSUPPORTED:
4185 simple_error_message_box(
4186 "The capture file contains record data that Wireshark doesn't support.\n(%s)",
4191 case WTAP_ERR_UNSUPPORTED_ENCAP:
4192 simple_error_message_box(
4193 "The capture file has a packet with a network type that Wireshark doesn't support.\n(%s)",
4198 case WTAP_ERR_CANT_READ:
4199 simple_error_message_box(
4200 "An attempt to read from the capture file failed for"
4201 " some unknown reason.");
4204 case WTAP_ERR_SHORT_READ:
4205 simple_error_message_box(
4206 "The capture file appears to have been cut short"
4207 " in the middle of a packet.");
4210 case WTAP_ERR_BAD_FILE:
4211 simple_error_message_box(
4212 "The capture file appears to be damaged or corrupt.\n(%s)",
4217 case WTAP_ERR_DECOMPRESS:
4218 simple_error_message_box(
4219 "The compressed capture file appears to be damaged or corrupt.\n"
4225 simple_error_message_box(
4226 "An error occurred while reading the"
4227 " capture file: %s.", wtap_strerror(*err));
4230 return CF_READ_ERROR;
4236 cf_save_packets(capture_file *cf, const char *fname, guint save_format,
4237 gboolean compressed, gboolean discard_comments,
4238 gboolean dont_reopen)
4240 gchar *fname_new = NULL;
4249 save_callback_args_t callback_args;
4251 gchar *display_basename;
4256 cf_callback_invoke(cf_cb_file_save_started, (gpointer)fname);
4258 if (save_format == cf->cd_t && compressed == cf->iscompressed
4259 && !discard_comments && !cf->unsaved_changes) {
4260 /* We're saving in the format it's already in, and we're
4261 not discarding comments, and there are no changes we have
4262 in memory that aren't saved to the file, so we can just move
4263 or copy the raw data. */
4265 if (cf->is_tempfile) {
4266 /* The file being saved is a temporary file from a live
4267 capture, so it doesn't need to stay around under that name;
4268 first, try renaming the capture buffer file to the new name.
4269 This acts as a "safe save", in that, if the file already
4270 exists, the existing file will be removed only if the rename
4273 Sadly, on Windows, as we have the current capture file
4274 open, even MoveFileEx() with MOVEFILE_REPLACE_EXISTING
4275 (to cause the rename to remove an existing target), as
4276 done by ws_stdio_rename() (ws_rename() is #defined to
4277 be ws_stdio_rename() on Windows) will fail.
4279 According to the MSDN documentation for CreateFile(), if,
4280 when we open a capture file, we were to directly do a CreateFile(),
4281 opening with FILE_SHARE_DELETE|FILE_SHARE_READ, and then
4282 convert it to a file descriptor with _open_osfhandle(),
4283 that would allow the file to be renamed out from under us.
4285 However, that doesn't work in practice. Perhaps the problem
4286 is that the process doing the rename is the process that
4287 has the file open. */
4289 if (ws_rename(cf->filename, fname) == 0) {
4290 /* That succeeded - there's no need to copy the source file. */
4291 how_to_save = SAVE_WITH_MOVE;
4293 if (errno == EXDEV) {
4294 /* They're on different file systems, so we have to copy the
4296 how_to_save = SAVE_WITH_COPY;
4298 /* The rename failed, but not because they're on different
4299 file systems - put up an error message. (Or should we
4300 just punt and try to copy? The only reason why I'd
4301 expect the rename to fail and the copy to succeed would
4302 be if we didn't have permission to remove the file from
4303 the temporary directory, and that might be fixable - but
4304 is it worth requiring the user to go off and fix it?) */
4305 cf_rename_failure_alert_box(fname, errno);
4310 how_to_save = SAVE_WITH_COPY;
4313 /* It's a permanent file, so we should copy it, and not remove the
4315 how_to_save = SAVE_WITH_COPY;
4318 if (how_to_save == SAVE_WITH_COPY) {
4319 /* Copy the file, if we haven't moved it. If we're overwriting
4320 an existing file, we do it with a "safe save", by writing
4321 to a new file and, if the write succeeds, renaming the
4322 new file on top of the old file. */
4323 if (file_exists(fname)) {
4324 fname_new = g_strdup_printf("%s~", fname);
4325 if (!copy_file_binary_mode(cf->filename, fname_new))
4328 if (!copy_file_binary_mode(cf->filename, fname))
4333 /* Either we're saving in a different format or we're saving changes,
4334 such as added, modified, or removed comments, that haven't yet
4335 been written to the underlying file; we can't do that by copying
4336 or moving the capture file, we have to do it by writing the packets
4339 wtapng_section_t *shb_hdr = NULL;
4340 wtapng_iface_descriptions_t *idb_inf = NULL;
4343 shb_hdr = wtap_file_get_shb_info(cf->wth);
4344 idb_inf = wtap_file_get_idb_info(cf->wth);
4346 /* Determine what file encapsulation type we should use. */
4347 encap = wtap_dump_file_encap_type(cf->linktypes);
4349 if (file_exists(fname)) {
4350 /* We're overwriting an existing file; write out to a new file,
4351 and, if that succeeds, rename the new file on top of the
4352 old file. That makes this a "safe save", so that we don't
4353 lose the old file if we have a problem writing out the new
4354 file. (If the existing file is the current capture file,
4355 we *HAVE* to do that, otherwise we're overwriting the file
4356 from which we're reading the packets that we're writing!) */
4357 fname_new = g_strdup_printf("%s~", fname);
4358 pdh = wtap_dump_open_ng(fname_new, save_format, encap, cf->snap,
4359 compressed, shb_hdr, idb_inf, &err);
4361 pdh = wtap_dump_open_ng(fname, save_format, encap, cf->snap,
4362 compressed, shb_hdr, idb_inf, &err);
4368 cf_open_failure_alert_box(fname, err, NULL, TRUE, save_format);
4372 /* Add address resolution */
4373 wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list());
4375 /* Iterate through the list of packets, processing all the packets. */
4376 callback_args.pdh = pdh;
4377 callback_args.fname = fname;
4378 callback_args.file_type = save_format;
4379 switch (process_specified_packets(cf, NULL, "Saving", "packets",
4380 TRUE, save_packet, &callback_args)) {
4383 /* Completed successfully. */
4387 /* The user decided to abort the saving.
4388 If we're writing to a temporary file, remove it.
4389 XXX - should we do so even if we're not writing to a
4391 wtap_dump_close(pdh, &err);
4392 if (fname_new != NULL)
4393 ws_unlink(fname_new);
4394 cf_callback_invoke(cf_cb_file_save_stopped, NULL);
4395 return CF_WRITE_ABORTED;
4398 /* Error while saving.
4399 If we're writing to a temporary file, remove it. */
4400 if (fname_new != NULL)
4401 ws_unlink(fname_new);
4402 wtap_dump_close(pdh, &err);
4406 if (!wtap_dump_close(pdh, &err)) {
4407 cf_close_failure_alert_box(fname, err);
4411 how_to_save = SAVE_WITH_WTAP;
4414 if (fname_new != NULL) {
4415 /* We wrote out to fname_new, and should rename it on top of
4416 fname. fname_new is now closed, so that should be possible even
4417 on Windows. However, on Windows, we first need to close whatever
4418 file descriptors we have open for fname. */
4420 wtap_fdclose(cf->wth);
4422 /* Now do the rename. */
4423 if (ws_rename(fname_new, fname) == -1) {
4424 /* Well, the rename failed. */
4425 cf_rename_failure_alert_box(fname, errno);
4427 /* Attempt to reopen the random file descriptor using the
4428 current file's filename. (At this point, the sequential
4429 file descriptor is closed.) */
4430 if (!wtap_fdreopen(cf->wth, cf->filename, &err)) {
4431 /* Oh, well, we're screwed. */
4432 display_basename = g_filename_display_basename(cf->filename);
4433 simple_error_message_box(
4434 file_open_error_message(err, FALSE), display_basename);
4435 g_free(display_basename);
4442 cf_callback_invoke(cf_cb_file_save_finished, NULL);
4443 cf->unsaved_changes = FALSE;
4446 switch (how_to_save) {
4448 case SAVE_WITH_MOVE:
4449 /* We just moved the file, so the wtap structure refers to the
4450 new file, and all the information other than the filename
4451 and the "is temporary" status applies to the new file; just
4453 g_free(cf->filename);
4454 cf->filename = g_strdup(fname);
4455 cf->is_tempfile = FALSE;
4456 cf_callback_invoke(cf_cb_file_fast_save_finished, cf);
4459 case SAVE_WITH_COPY:
4460 /* We just copied the file, s all the information other than
4461 the wtap structure, the filename, and the "is temporary"
4462 status applies to the new file; just update that. */
4463 wtap_close(cf->wth);
4464 cf->wth = wtap_open_offline(fname, &err, &err_info, TRUE);
4465 if (cf->wth == NULL) {
4466 cf_open_failure_alert_box(fname, err, err_info, FALSE, 0);
4469 g_free(cf->filename);
4470 cf->filename = g_strdup(fname);
4471 cf->is_tempfile = FALSE;
4473 cf_callback_invoke(cf_cb_file_fast_save_finished, cf);
4476 case SAVE_WITH_WTAP:
4477 /* Open and read the file we saved to.
4479 XXX - this is somewhat of a waste; we already have the
4480 packets, all this gets us is updated file type information
4481 (which we could just stuff into "cf"), and having the new
4482 file be the one we have opened and from which we're reading
4483 the data, and it means we have to spend time opening and
4484 reading the file, which could be a significant amount of
4485 time if the file is large.
4487 If the capture-file-writing code were to return the
4488 seek offset of each packet it writes, we could save that
4489 in the frame_data structure for the frame, and just open
4490 the file without reading it again...
4492 ...as long as, for gzipped files, the process of writing
4493 out the file *also* generates the information needed to
4494 support fast random access to the compressed file. */
4495 if (rescan_file(cf, fname, FALSE, &err) != CF_READ_OK) {
4496 /* The rescan failed; just close the file. Either
4497 a dialog was popped up for the failure, so the
4498 user knows what happened, or they stopped the
4499 rescan, in which case they know what happened. */
4505 /* If we were told to discard the comments, do so. */
4506 if (discard_comments) {
4507 /* Remove SHB comment, if any. */
4508 wtap_write_shb_comment(cf->wth, NULL);
4510 /* Remove packet comments. */
4511 for (framenum = 1; framenum <= cf->count; framenum++) {
4512 fdata = frame_data_sequence_find(cf->frames, framenum);
4513 if (fdata->opt_comment) {
4514 g_free(fdata->opt_comment);
4515 fdata->opt_comment = NULL;
4516 cf->packet_comment_count--;
4524 if (fname_new != NULL) {
4525 /* We were trying to write to a temporary file; get rid of it if it
4526 exists. (We don't care whether this fails, as, if it fails,
4527 there's not much we can do about it. I guess if it failed for
4528 a reason other than "it doesn't exist", we could report an
4529 error, so the user knows there's a junk file that they might
4530 want to clean up.) */
4531 ws_unlink(fname_new);
4534 cf_callback_invoke(cf_cb_file_save_failed, NULL);
4535 return CF_WRITE_ERROR;
4539 cf_export_specified_packets(capture_file *cf, const char *fname,
4540 packet_range_t *range, guint save_format,
4541 gboolean compressed)
4543 gchar *fname_new = NULL;
4546 save_callback_args_t callback_args;
4547 wtapng_section_t *shb_hdr;
4548 wtapng_iface_descriptions_t *idb_inf;
4551 cf_callback_invoke(cf_cb_file_export_specified_packets_started, (gpointer)fname);
4553 packet_range_process_init(range);
4555 /* We're writing out specified packets from the specified capture
4556 file to another file. Even if all captured packets are to be
4557 written, don't special-case the operation - read each packet
4558 and then write it out if it's one of the specified ones. */
4560 shb_hdr = wtap_file_get_shb_info(cf->wth);
4561 idb_inf = wtap_file_get_idb_info(cf->wth);
4563 /* Determine what file encapsulation type we should use. */
4564 encap = wtap_dump_file_encap_type(cf->linktypes);
4566 if (file_exists(fname)) {
4567 /* We're overwriting an existing file; write out to a new file,
4568 and, if that succeeds, rename the new file on top of the
4569 old file. That makes this a "safe save", so that we don't
4570 lose the old file if we have a problem writing out the new
4571 file. (If the existing file is the current capture file,
4572 we *HAVE* to do that, otherwise we're overwriting the file
4573 from which we're reading the packets that we're writing!) */
4574 fname_new = g_strdup_printf("%s~", fname);
4575 pdh = wtap_dump_open_ng(fname_new, save_format, encap, cf->snap,
4576 compressed, shb_hdr, idb_inf, &err);
4578 pdh = wtap_dump_open_ng(fname, save_format, encap, cf->snap,
4579 compressed, shb_hdr, idb_inf, &err);
4585 cf_open_failure_alert_box(fname, err, NULL, TRUE, save_format);
4589 /* Add address resolution */
4590 wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list());
4592 /* Iterate through the list of packets, processing the packets we were
4595 XXX - we've already called "packet_range_process_init(range)", but
4596 "process_specified_packets()" will do it again. Fortunately,
4597 that's harmless in this case, as we haven't done anything to
4598 "range" since we initialized it. */
4599 callback_args.pdh = pdh;
4600 callback_args.fname = fname;
4601 callback_args.file_type = save_format;
4602 switch (process_specified_packets(cf, range, "Writing", "specified packets",
4603 TRUE, save_packet, &callback_args)) {
4606 /* Completed successfully. */
4610 /* The user decided to abort the saving.
4611 If we're writing to a temporary file, remove it.
4612 XXX - should we do so even if we're not writing to a
4614 wtap_dump_close(pdh, &err);
4615 if (fname_new != NULL)
4616 ws_unlink(fname_new);
4617 cf_callback_invoke(cf_cb_file_export_specified_packets_stopped, NULL);
4618 return CF_WRITE_ABORTED;
4622 /* Error while saving.
4623 If we're writing to a temporary file, remove it. */
4624 if (fname_new != NULL)
4625 ws_unlink(fname_new);
4626 wtap_dump_close(pdh, &err);
4630 if (!wtap_dump_close(pdh, &err)) {
4631 cf_close_failure_alert_box(fname, err);
4635 if (fname_new != NULL) {
4636 /* We wrote out to fname_new, and should rename it on top of
4637 fname; fname is now closed, so that should be possible even
4638 on Windows. Do the rename. */
4639 if (ws_rename(fname_new, fname) == -1) {
4640 /* Well, the rename failed. */
4641 cf_rename_failure_alert_box(fname, errno);
4646 cf_callback_invoke(cf_cb_file_export_specified_packets_finished, NULL);
4650 if (fname_new != NULL) {
4651 /* We were trying to write to a temporary file; get rid of it if it
4652 exists. (We don't care whether this fails, as, if it fails,
4653 there's not much we can do about it. I guess if it failed for
4654 a reason other than "it doesn't exist", we could report an
4655 error, so the user knows there's a junk file that they might
4656 want to clean up.) */
4657 ws_unlink(fname_new);
4660 cf_callback_invoke(cf_cb_file_export_specified_packets_failed, NULL);
4661 return CF_WRITE_ERROR;
4665 cf_open_failure_alert_box(const char *filename, int err, gchar *err_info,
4666 gboolean for_writing, int file_type)
4668 gchar *display_basename;
4671 /* Wiretap error. */
4672 display_basename = g_filename_display_basename(filename);
4675 case WTAP_ERR_NOT_REGULAR_FILE:
4676 simple_error_message_box(
4677 "The file \"%s\" is a \"special file\" or socket or other non-regular file.",
4681 case WTAP_ERR_RANDOM_OPEN_PIPE:
4682 /* Seen only when opening a capture file for reading. */
4683 simple_error_message_box(
4684 "The file \"%s\" is a pipe or FIFO; Wireshark can't read pipe or FIFO files.\n"
4685 "To capture from a pipe or FIFO use wireshark -i -",
4689 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
4690 /* Seen only when opening a capture file for reading. */
4691 simple_error_message_box(
4692 "The file \"%s\" isn't a capture file in a format Wireshark understands.",
4696 case WTAP_ERR_UNSUPPORTED:
4697 /* Seen only when opening a capture file for reading. */
4698 simple_error_message_box(
4699 "The file \"%s\" isn't a capture file in a format Wireshark understands.\n"
4701 display_basename, err_info);
4705 case WTAP_ERR_CANT_WRITE_TO_PIPE:
4706 /* Seen only when opening a capture file for writing. */
4707 simple_error_message_box(
4708 "The file \"%s\" is a pipe, and %s capture files can't be "
4709 "written to a pipe.",
4710 display_basename, wtap_file_type_string(file_type));
4713 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
4714 /* Seen only when opening a capture file for writing. */
4715 simple_error_message_box(
4716 "Wireshark doesn't support writing capture files in that format.");
4719 case WTAP_ERR_UNSUPPORTED_ENCAP:
4721 simple_error_message_box("Wireshark can't save this capture in that format.");
4723 simple_error_message_box(
4724 "The file \"%s\" is a capture for a network type that Wireshark doesn't support.\n"
4726 display_basename, err_info);
4731 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
4733 simple_error_message_box(
4734 "Wireshark can't save this capture in that format.");
4736 simple_error_message_box(
4737 "The file \"%s\" is a capture for a network type that Wireshark doesn't support.",
4742 case WTAP_ERR_BAD_FILE:
4743 /* Seen only when opening a capture file for reading. */
4744 simple_error_message_box(
4745 "The file \"%s\" appears to be damaged or corrupt.\n"
4747 display_basename, err_info);
4751 case WTAP_ERR_CANT_OPEN:
4753 simple_error_message_box(
4754 "The file \"%s\" could not be created for some unknown reason.",
4757 simple_error_message_box(
4758 "The file \"%s\" could not be opened for some unknown reason.",
4763 case WTAP_ERR_SHORT_READ:
4764 simple_error_message_box(
4765 "The file \"%s\" appears to have been cut short"
4766 " in the middle of a packet or other data.",
4770 case WTAP_ERR_SHORT_WRITE:
4771 simple_error_message_box(
4772 "A full header couldn't be written to the file \"%s\".",
4776 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
4777 simple_error_message_box(
4778 "This file type cannot be written as a compressed file.");
4781 case WTAP_ERR_DECOMPRESS:
4782 simple_error_message_box(
4783 "The compressed file \"%s\" appears to be damaged or corrupt.\n"
4784 "(%s)", display_basename, err_info);
4789 simple_error_message_box(
4790 "The file \"%s\" could not be %s: %s.",
4792 for_writing ? "created" : "opened",
4793 wtap_strerror(err));
4796 g_free(display_basename);
4799 open_failure_alert_box(filename, err, for_writing);
4804 * XXX - whether we mention the source pathname, the target pathname,
4805 * or both depends on the error and on what we find if we look for
4806 * one or both of them.
4809 cf_rename_failure_alert_box(const char *filename, int err)
4811 gchar *display_basename;
4813 display_basename = g_filename_display_basename(filename);
4817 /* XXX - should check whether the source exists and, if not,
4818 report it as the problem and, if so, report the destination
4820 simple_error_message_box("The path to the file \"%s\" doesn't exist.",
4825 /* XXX - if we're doing a rename after a safe save, we should
4826 probably say something else. */
4827 simple_error_message_box("You don't have permission to move the capture file to \"%s\".",
4832 /* XXX - this should probably mention both the source and destination
4834 simple_error_message_box("The file \"%s\" could not be moved: %s.",
4835 display_basename, wtap_strerror(err));
4838 g_free(display_basename);
4841 /* Check for write errors - if the file is being written to an NFS server,
4842 a write error may not show up until the file is closed, as NFS clients
4843 might not send writes to the server until the "write()" call finishes,
4844 so that the write may fail on the server but the "write()" may succeed. */
4846 cf_close_failure_alert_box(const char *filename, int err)
4848 gchar *display_basename;
4851 /* Wiretap error. */
4852 display_basename = g_filename_display_basename(filename);
4855 case WTAP_ERR_CANT_CLOSE:
4856 simple_error_message_box(
4857 "The file \"%s\" couldn't be closed for some unknown reason.",
4861 case WTAP_ERR_SHORT_WRITE:
4862 simple_error_message_box(
4863 "Not all the packets could be written to the file \"%s\".",
4868 simple_error_message_box(
4869 "An error occurred while closing the file \"%s\": %s.",
4870 display_basename, wtap_strerror(err));
4873 g_free(display_basename);
4876 We assume that a close error from the OS is really a write error. */
4877 write_failure_alert_box(filename, err);
4881 /* Reload the current capture file. */
4883 cf_reload(capture_file *cf) {
4885 gboolean is_tempfile;
4888 /* If the file could be opened, "cf_open()" calls "cf_close()"
4889 to get rid of state for the old capture file before filling in state
4890 for the new capture file. "cf_close()" will remove the file if
4891 it's a temporary file; we don't want that to happen (for one thing,
4892 it'd prevent subsequent reopens from working). Remember whether it's
4893 a temporary file, mark it as not being a temporary file, and then
4894 reopen it as the type of file it was.
4896 Also, "cf_close()" will free "cf->filename", so we must make
4897 a copy of it first. */
4898 filename = g_strdup(cf->filename);
4899 is_tempfile = cf->is_tempfile;
4900 cf->is_tempfile = FALSE;
4901 if (cf_open(cf, filename, is_tempfile, &err) == CF_OK) {
4902 switch (cf_read(cf, TRUE)) {
4906 /* Just because we got an error, that doesn't mean we were unable
4907 to read any of the file; we handle what we could get from the
4911 case CF_READ_ABORTED:
4912 /* The user bailed out of re-reading the capture file; the
4913 capture file has been closed - just free the capture file name
4914 string and return (without changing the last containing
4920 /* The open failed, so "cf->is_tempfile" wasn't set to "is_tempfile".
4921 Instead, the file was left open, so we should restore "cf->is_tempfile"
4924 XXX - change the menu? Presumably "cf_open()" will do that;
4925 make sure it does! */
4926 cf->is_tempfile = is_tempfile;
4928 /* "cf_open()" made a copy of the file name we handed it, so
4929 we should free up our copy. */
4939 * indent-tabs-mode: nil
4942 * ex: set shiftwidth=2 tabstop=8 expandtab:
4943 * :indentSize=2:tabSize=8:noTabs=true: