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.
46 #include <epan/epan.h>
47 #include <epan/filesystem.h>
50 #include "color_filters.h"
52 #include <epan/column.h>
53 #include <epan/packet.h>
54 #include <epan/column-utils.h>
55 #include "packet-range.h"
62 #include <epan/prefs.h>
63 #include <epan/dfilter/dfilter.h>
64 #include <epan/epan_dissect.h>
66 #include <epan/dissectors/packet-data.h>
67 #include <epan/dissectors/packet-ber.h>
68 #include <epan/timestamp.h>
69 #include <epan/dfilter/dfilter-macro.h>
70 #include <wsutil/file_util.h>
71 #include <epan/strutil.h>
72 #include <epan/addr_resolv.h>
74 #include "ui/alert_box.h"
75 #include "ui/simple_dialog.h"
76 #include "ui/main_statusbar.h"
77 #include "ui/progress_dlg.h"
78 #include "ui/ui_util.h"
81 gboolean auto_scroll_live;
84 static guint32 cum_bytes;
85 static nstime_t first_ts;
86 static nstime_t prev_dis_ts;
87 static nstime_t prev_cap_ts;
89 static gulong computed_elapsed;
91 static void cf_reset_state(capture_file *cf);
93 static int read_packet(capture_file *cf, dfilter_t *dfcode,
94 gboolean filtering_tap_listeners, guint tap_flags, gint64 offset);
96 static void rescan_packets(capture_file *cf, const char *action, const char *action_item,
97 gboolean refilter, gboolean redissect);
104 static match_result match_protocol_tree(capture_file *cf, frame_data *fdata,
106 static void match_subtree_text(proto_node *node, gpointer data);
107 static match_result match_summary_line(capture_file *cf, frame_data *fdata,
109 static match_result match_ascii_and_unicode(capture_file *cf, frame_data *fdata,
111 static match_result match_ascii(capture_file *cf, frame_data *fdata,
113 static match_result match_unicode(capture_file *cf, frame_data *fdata,
115 static match_result match_binary(capture_file *cf, frame_data *fdata,
117 static match_result match_dfilter(capture_file *cf, frame_data *fdata,
119 static match_result match_marked(capture_file *cf, frame_data *fdata,
121 static match_result match_time_reference(capture_file *cf, frame_data *fdata,
123 static gboolean find_packet(capture_file *cf,
124 match_result (*match_function)(capture_file *, frame_data *, void *),
125 void *criterion, search_direction dir);
127 static void cf_open_failure_alert_box(const char *filename, int err,
128 gchar *err_info, gboolean for_writing,
130 static void cf_rename_failure_alert_box(const char *filename, int err);
131 static void cf_close_failure_alert_box(const char *filename, int err);
132 static void ref_time_packets(capture_file *cf);
133 /* Update the progress bar this many times when reading a file. */
134 #define N_PROGBAR_UPDATES 100
135 /* We read around 200k/100ms don't update the progress bar more often than that */
136 #define MIN_QUANTUM 200000
137 #define MIN_NUMBER_OF_PACKET 1500
140 * We could probably use g_signal_...() instead of the callbacks below but that
141 * would require linking our CLI programs to libgobject and creating an object
142 * instance for the signals.
145 cf_callback_t cb_fct;
147 } cf_callback_data_t;
149 static GList *cf_callbacks = NULL;
152 cf_callback_invoke(int event, gpointer data)
154 cf_callback_data_t *cb;
155 GList *cb_item = cf_callbacks;
157 /* there should be at least one interested */
158 g_assert(cb_item != NULL);
160 while(cb_item != NULL) {
162 cb->cb_fct(event, data, cb->user_data);
163 cb_item = g_list_next(cb_item);
169 cf_callback_add(cf_callback_t func, gpointer user_data)
171 cf_callback_data_t *cb;
173 cb = g_malloc(sizeof(cf_callback_data_t));
175 cb->user_data = user_data;
177 cf_callbacks = g_list_append(cf_callbacks, cb);
181 cf_callback_remove(cf_callback_t func)
183 cf_callback_data_t *cb;
184 GList *cb_item = cf_callbacks;
186 while(cb_item != NULL) {
188 if(cb->cb_fct == func) {
189 cf_callbacks = g_list_remove(cf_callbacks, cb);
193 cb_item = g_list_next(cb_item);
196 g_assert_not_reached();
200 cf_timestamp_auto_precision(capture_file *cf)
203 int prec = timestamp_get_precision();
206 /* don't try to get the file's precision if none is opened */
207 if(cf->state == FILE_CLOSED) {
211 /* if we are in auto mode, set precision of current file */
212 if(prec == TS_PREC_AUTO ||
213 prec == TS_PREC_AUTO_SEC ||
214 prec == TS_PREC_AUTO_DSEC ||
215 prec == TS_PREC_AUTO_CSEC ||
216 prec == TS_PREC_AUTO_MSEC ||
217 prec == TS_PREC_AUTO_USEC ||
218 prec == TS_PREC_AUTO_NSEC)
220 switch(wtap_file_tsprecision(cf->wth)) {
221 case(WTAP_FILE_TSPREC_SEC):
222 timestamp_set_precision(TS_PREC_AUTO_SEC);
224 case(WTAP_FILE_TSPREC_DSEC):
225 timestamp_set_precision(TS_PREC_AUTO_DSEC);
227 case(WTAP_FILE_TSPREC_CSEC):
228 timestamp_set_precision(TS_PREC_AUTO_CSEC);
230 case(WTAP_FILE_TSPREC_MSEC):
231 timestamp_set_precision(TS_PREC_AUTO_MSEC);
233 case(WTAP_FILE_TSPREC_USEC):
234 timestamp_set_precision(TS_PREC_AUTO_USEC);
236 case(WTAP_FILE_TSPREC_NSEC):
237 timestamp_set_precision(TS_PREC_AUTO_NSEC);
240 g_assert_not_reached();
243 /* Set the column widths of those columns that show the time in
244 "command-line-specified" format. */
245 for (i = 0; i < cf->cinfo.num_cols; i++) {
246 if (col_has_time_fmt(&cf->cinfo, i)) {
247 new_packet_list_resize_column(i);
253 cf_get_computed_elapsed(void)
255 return computed_elapsed;
258 static void reset_elapsed(void)
260 computed_elapsed = 0;
263 static void compute_elapsed(GTimeVal *start_time)
268 g_get_current_time(&time_now);
270 delta_time = (time_now.tv_sec - start_time->tv_sec) * 1e6 +
271 time_now.tv_usec - start_time->tv_usec;
273 computed_elapsed = (gulong) (delta_time / 1000); /* ms */
277 cf_open(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
282 wth = wtap_open_offline(fname, err, &err_info, TRUE);
286 /* The open succeeded. Close whatever capture file we had open,
287 and fill in the information for this file. */
290 /* Cleanup all data structures used for dissection. */
291 cleanup_dissection();
292 /* Initialize all data structures used for dissection. */
295 /* We're about to start reading the file. */
296 cf->state = FILE_READ_IN_PROGRESS;
301 /* Set the file name because we need it to set the follow stream filter.
302 XXX - is that still true? We need it for other reasons, though,
304 cf->filename = g_strdup(fname);
306 /* Indicate whether it's a permanent or temporary file. */
307 cf->is_tempfile = is_tempfile;
309 /* No user changes yet. */
310 cf->unsaved_changes = FALSE;
314 cf->cd_t = wtap_file_type(cf->wth);
315 cf->linktypes = g_array_sized_new(FALSE, FALSE, (guint) sizeof(int), 1);
317 cf->packet_comment_count = 0;
318 cf->displayed_count = 0;
319 cf->marked_count = 0;
320 cf->ignored_count = 0;
321 cf->ref_time_count = 0;
322 cf->drops_known = FALSE;
324 cf->snap = wtap_snapshot_length(cf->wth);
326 /* Snapshot length not known. */
327 cf->has_snap = FALSE;
328 cf->snap = WTAP_MAX_PACKET_SIZE;
332 /* Allocate a frame_data_sequence for the frames in this file */
333 cf->frames = new_frame_data_sequence();
335 nstime_set_zero(&cf->elapsed_time);
336 nstime_set_unset(&first_ts);
337 nstime_set_unset(&prev_dis_ts);
338 nstime_set_unset(&prev_cap_ts);
341 /* Adjust timestamp precision if auto is selected, col width will be adjusted */
342 cf_timestamp_auto_precision(cf);
344 new_packet_list_queue_draw();
345 fileset_file_opened(fname);
347 if(cf->cd_t == WTAP_FILE_BER) {
348 /* tell the BER dissector the file name */
349 ber_set_filename(cf->filename);
352 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
353 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
358 cf_open_failure_alert_box(fname, *err, err_info, FALSE, 0);
363 * Add an encapsulation type to cf->linktypes.
366 cf_add_encapsulation_type(capture_file *cf, int encap)
370 for (i = 0; i < cf->linktypes->len; i++) {
371 if (g_array_index(cf->linktypes, gint, i) == encap)
372 return; /* it's already there */
374 /* It's not already there - add it. */
375 g_array_append_val(cf->linktypes, encap);
379 * Reset the state for the currently closed file, but don't do the
380 * UI callbacks; this is for use in "cf_open()", where we don't
381 * want the UI to go from "file open" to "file closed" back to
382 * "file open", we want it to go from "old file open" to "new file
383 * open and being read".
385 * XXX - currently, cf_open() calls cf_close(), rather than
389 cf_reset_state(capture_file *cf)
391 /* Die if we're in the middle of reading a file. */
392 g_assert(cf->state != FILE_READ_IN_PROGRESS);
398 /* We have no file open... */
399 if (cf->filename != NULL) {
400 /* If it's a temporary file, remove it. */
402 ws_unlink(cf->filename);
403 g_free(cf->filename);
406 /* ...which means we have no changes to that file to save. */
407 cf->unsaved_changes = FALSE;
409 dfilter_free(cf->rfcode);
411 if (cf->frames != NULL) {
412 free_frame_data_sequence(cf->frames);
415 #ifdef WANT_PACKET_EDITOR
416 if (cf->edited_frames) {
417 g_tree_destroy(cf->edited_frames);
418 cf->edited_frames = NULL;
421 cf_unselect_packet(cf); /* nothing to select */
422 cf->first_displayed = 0;
423 cf->last_displayed = 0;
425 /* No frames, no frame selected, no field in that frame selected. */
427 cf->current_frame = 0;
429 cf->finfo_selected = NULL;
431 /* No frame link-layer types, either. */
432 g_array_free(cf->linktypes, TRUE);
433 cf->linktypes = NULL;
435 /* Clear the packet list. */
436 new_packet_list_freeze();
437 new_packet_list_clear();
438 new_packet_list_thaw();
441 nstime_set_zero(&cf->elapsed_time);
443 reset_tap_listeners();
445 /* We have no file open. */
446 cf->state = FILE_CLOSED;
448 fileset_file_closed();
451 /* Reset everything to a pristine state */
453 cf_close(capture_file *cf)
455 if(cf->state != FILE_CLOSED) {
456 cf_callback_invoke(cf_cb_file_closing, cf);
458 /* close things, if not already closed before */
459 color_filters_cleanup();
461 cleanup_dissection();
463 cf_callback_invoke(cf_cb_file_closed, cf);
468 calc_progbar_val(capture_file *cf, gint64 size, gint64 file_pos, gchar *status_str, gulong status_size)
472 progbar_val = (gfloat) file_pos / (gfloat) size;
473 if (progbar_val > 1.0) {
475 /* The file probably grew while we were reading it.
476 * Update file size, and try again.
478 size = wtap_file_size(cf->wth, NULL);
481 progbar_val = (gfloat) file_pos / (gfloat) size;
483 /* If it's still > 1, either "wtap_file_size()" failed (in which
484 * case there's not much we can do about it), or the file
485 * *shrank* (in which case there's not much we can do about
486 * it); just clip the progress value at 1.0.
488 if (progbar_val > 1.0f)
492 g_snprintf(status_str, status_size,
493 "%" G_GINT64_MODIFIER "dKB of %" G_GINT64_MODIFIER "dKB",
494 file_pos / 1024, size / 1024);
500 cf_read(capture_file *cf, gboolean reloading)
507 progdlg_t *volatile progbar = NULL;
509 volatile gint64 size;
510 volatile float progbar_val;
512 gchar status_str[100];
513 volatile gint64 progbar_nextstep;
514 volatile gint64 progbar_quantum;
516 gboolean filtering_tap_listeners;
518 volatile int count = 0;
520 volatile int displayed_once = 0;
524 /* Compile the current display filter.
525 * We assume this will not fail since cf->dfilter is only set in
526 * cf_filter IFF the filter was valid.
528 compiled = dfilter_compile(cf->dfilter, &dfcode);
529 g_assert(!cf->dfilter || (compiled && dfcode));
531 /* Do we have any tap listeners with filters? */
532 filtering_tap_listeners = have_filtering_tap_listeners();
534 /* Get the union of the flags for all tap listeners. */
535 tap_flags = union_of_tap_listener_flags();
537 reset_tap_listeners();
539 name_ptr = g_filename_display_basename(cf->filename);
542 cf_callback_invoke(cf_cb_file_reload_started, cf);
544 cf_callback_invoke(cf_cb_file_read_started, cf);
546 /* Record whether the file is compressed.
547 XXX - do we know this at open time? */
548 cf->iscompressed = wtap_iscompressed(cf->wth);
550 /* Find the size of the file. */
551 size = wtap_file_size(cf->wth, NULL);
553 /* Update the progress bar when it gets to this value. */
554 progbar_nextstep = 0;
555 /* When we reach the value that triggers a progress bar update,
556 bump that value by this amount. */
558 progbar_quantum = size/N_PROGBAR_UPDATES;
559 if (progbar_quantum < MIN_QUANTUM)
560 progbar_quantum = MIN_QUANTUM;
563 /* Progress so far. */
566 /* The packet list window will be empty until the file is completly loaded */
567 new_packet_list_freeze();
570 g_get_current_time(&start_time);
572 while ((wtap_read(cf->wth, &err, &err_info, &data_offset))) {
575 file_pos = wtap_read_so_far(cf->wth);
577 /* Create the progress bar if necessary.
578 * Check whether it should be created or not every MIN_NUMBER_OF_PACKET
580 if ((progbar == NULL) && !(count % MIN_NUMBER_OF_PACKET)){
581 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
583 progbar = delayed_create_progress_dlg(cf->window, "Reloading", name_ptr,
584 TRUE, &stop_flag, &start_time, progbar_val);
586 progbar = delayed_create_progress_dlg(cf->window, "Loading", name_ptr,
587 TRUE, &stop_flag, &start_time, progbar_val);
590 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
591 when we update it, we have to run the GTK+ main loop to get it
592 to repaint what's pending, and doing so may involve an "ioctl()"
593 to see if there's any pending input from an X server, and doing
594 that for every packet can be costly, especially on a big file. */
595 if (file_pos >= progbar_nextstep) {
596 if (progbar != NULL) {
597 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
598 /* update the packet bar content on the first run or frequently on very large files */
600 if (progbar_quantum > 500000 || displayed_once == 0) {
601 if ((auto_scroll_live || displayed_once == 0 || cf->displayed_count < 1000) && cf->count != 0) {
603 packets_bar_update();
606 #endif /* HAVE_LIBPCAP */
607 update_progress_dlg(progbar, progbar_val, status_str);
609 progbar_nextstep += progbar_quantum;
614 /* Well, the user decided to abort the read. He/She will be warned and
615 it might be enough for him/her to work with the already loaded
617 This is especially true for very large capture files, where you don't
618 want to wait loading the whole file (which may last minutes or even
619 hours even on fast machines) just to see that it was the wrong file. */
623 read_packet(cf, dfcode, filtering_tap_listeners, tap_flags, data_offset);
625 CATCH(OutOfMemoryError) {
626 simple_message_box(ESD_TYPE_ERROR, NULL,
627 "Some infos / workarounds can be found at:\n"
628 "http://wiki.wireshark.org/KnownBugs/OutOfMemory",
629 "Sorry, but Wireshark has run out of memory and has to terminate now!");
631 /* Could we close the current capture and free up memory from that? */
634 /* we have to terminate, as we cannot recover from the memory error */
641 /* Free the display name */
644 /* Cleanup and release all dfilter resources */
646 dfilter_free(dfcode);
649 /* We're done reading the file; destroy the progress bar if it was created. */
651 destroy_progress_dlg(progbar);
653 /* We're done reading sequentially through the file. */
654 cf->state = FILE_READ_DONE;
656 /* Close the sequential I/O side, to free up memory it requires. */
657 wtap_sequential_close(cf->wth);
659 /* Allow the protocol dissectors to free up memory that they
660 * don't need after the sequential run-through of the packets. */
661 postseq_cleanup_all_protocols();
663 /* compute the time it took to load the file */
664 compute_elapsed(&start_time);
666 /* Set the file encapsulation type now; we don't know what it is until
667 we've looked at all the packets, as we don't know until then whether
668 there's more than one type (and thus whether it's
669 WTAP_ENCAP_PER_PACKET). */
670 cf->lnk_t = wtap_file_encap(cf->wth);
672 cf->current_frame = frame_data_sequence_find(cf->frames, cf->first_displayed);
675 new_packet_list_thaw();
677 cf_callback_invoke(cf_cb_file_reload_finished, cf);
679 cf_callback_invoke(cf_cb_file_read_finished, cf);
681 /* If we have any displayed packets to select, select the first of those
682 packets by making the first row the selected row. */
683 if (cf->first_displayed != 0){
684 new_packet_list_select_first_row();
688 simple_message_box(ESD_TYPE_WARN, NULL,
689 "The remaining packets in the file were discarded.\n"
691 "As a lot of packets from the original file will be missing,\n"
692 "remember to be careful when saving the current content to a file.\n",
693 "File loading was cancelled!");
694 return CF_READ_ERROR;
698 /* Put up a message box noting that the read failed somewhere along
699 the line. Don't throw out the stuff we managed to read, though,
703 case WTAP_ERR_UNSUPPORTED:
704 simple_error_message_box(
705 "The capture file contains record data that Wireshark doesn't support.\n(%s)",
710 case WTAP_ERR_UNSUPPORTED_ENCAP:
711 simple_error_message_box(
712 "The capture file has a packet with a network type that Wireshark doesn't support.\n(%s)",
717 case WTAP_ERR_CANT_READ:
718 simple_error_message_box(
719 "An attempt to read from the capture file failed for"
720 " some unknown reason.");
723 case WTAP_ERR_SHORT_READ:
724 simple_error_message_box(
725 "The capture file appears to have been cut short"
726 " in the middle of a packet.");
729 case WTAP_ERR_BAD_FILE:
730 simple_error_message_box(
731 "The capture file appears to be damaged or corrupt.\n(%s)",
736 case WTAP_ERR_DECOMPRESS:
737 simple_error_message_box(
738 "The compressed capture file appears to be damaged or corrupt.\n"
744 simple_error_message_box(
745 "An error occurred while reading the"
746 " capture file: %s.", wtap_strerror(err));
749 return CF_READ_ERROR;
756 cf_start_tail(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
758 cf_status_t cf_status;
760 cf_status = cf_open(cf, fname, is_tempfile, err);
765 cf_continue_tail(capture_file *cf, volatile int to_read, int *err)
767 gint64 data_offset = 0;
769 volatile int newly_displayed_packets = 0;
771 gboolean filtering_tap_listeners;
775 /* Compile the current display filter.
776 * We assume this will not fail since cf->dfilter is only set in
777 * cf_filter IFF the filter was valid.
779 compiled = dfilter_compile(cf->dfilter, &dfcode);
780 g_assert(!cf->dfilter || (compiled && dfcode));
782 /* Do we have any tap listeners with filters? */
783 filtering_tap_listeners = have_filtering_tap_listeners();
785 /* Get the union of the flags for all tap listeners. */
786 tap_flags = union_of_tap_listener_flags();
790 new_packet_list_check_end();
791 /* Don't freeze/thaw the list when doing live capture */
792 /*new_packet_list_freeze();*/
794 /*g_log(NULL, G_LOG_LEVEL_MESSAGE, "cf_continue_tail: %u new: %u", cf->count, to_read);*/
796 while (to_read != 0) {
797 wtap_cleareof(cf->wth);
798 if (!wtap_read(cf->wth, err, &err_info, &data_offset)) {
801 if (cf->state == FILE_READ_ABORTED) {
802 /* Well, the user decided to exit Wireshark. Break out of the
803 loop, and let the code below (which is called even if there
804 aren't any packets left to read) exit. */
808 if (read_packet(cf, dfcode, filtering_tap_listeners, tap_flags,
809 data_offset) != -1) {
810 newly_displayed_packets++;
813 CATCH(OutOfMemoryError) {
814 simple_message_box(ESD_TYPE_ERROR, NULL,
815 "Some infos / workarounds can be found at:\n"
816 "http://wiki.wireshark.org/KnownBugs/OutOfMemory",
817 "Sorry, but Wireshark has run out of memory and has to terminate now!");
819 /* Could we close the current capture and free up memory from that? */
820 return CF_READ_ABORTED;
822 /* we have to terminate, as we cannot recover from the memory error */
830 /* Update the file encapsulation; it might have changed based on the
831 packets we've read. */
832 cf->lnk_t = wtap_file_encap(cf->wth);
834 /* Cleanup and release all dfilter resources */
836 dfilter_free(dfcode);
839 /*g_log(NULL, G_LOG_LEVEL_MESSAGE, "cf_continue_tail: count %u state: %u err: %u",
840 cf->count, cf->state, *err);*/
842 /* Don't freeze/thaw the list when doing live capture */
843 /*new_packet_list_thaw();*/
844 /* With the new packet list the first packet
845 * isn't automatically selected.
847 if(!cf->current_frame)
848 new_packet_list_select_first_row();
850 /* moving to the end of the packet list - if the user requested so and
851 we have some new packets. */
852 if (newly_displayed_packets && auto_scroll_live && cf->count != 0)
853 new_packet_list_moveto_end();
855 if (cf->state == FILE_READ_ABORTED) {
856 /* Well, the user decided to exit Wireshark. Return CF_READ_ABORTED
857 so that our caller can kill off the capture child process;
858 this will cause an EOF on the pipe from the child, so
859 "cf_finish_tail()" will be called, and it will clean up
861 return CF_READ_ABORTED;
862 } else if (*err != 0) {
863 /* We got an error reading the capture file.
864 XXX - pop up a dialog box instead? */
865 g_warning("Error \"%s\" while reading: \"%s\"\n",
866 wtap_strerror(*err), cf->filename);
868 return CF_READ_ERROR;
874 cf_fake_continue_tail(capture_file *cf) {
875 cf->state = FILE_READ_DONE;
879 cf_finish_tail(capture_file *cf, int *err)
884 gboolean filtering_tap_listeners;
888 /* Compile the current display filter.
889 * We assume this will not fail since cf->dfilter is only set in
890 * cf_filter IFF the filter was valid.
892 compiled = dfilter_compile(cf->dfilter, &dfcode);
893 g_assert(!cf->dfilter || (compiled && dfcode));
895 /* Do we have any tap listeners with filters? */
896 filtering_tap_listeners = have_filtering_tap_listeners();
898 /* Get the union of the flags for all tap listeners. */
899 tap_flags = union_of_tap_listener_flags();
901 if(cf->wth == NULL) {
903 return CF_READ_ERROR;
906 new_packet_list_check_end();
907 /* Don't freeze/thaw the list when doing live capture */
908 /*new_packet_list_freeze();*/
910 while ((wtap_read(cf->wth, err, &err_info, &data_offset))) {
911 if (cf->state == FILE_READ_ABORTED) {
912 /* Well, the user decided to abort the read. Break out of the
913 loop, and let the code below (which is called even if there
914 aren't any packets left to read) exit. */
917 read_packet(cf, dfcode, filtering_tap_listeners, tap_flags, data_offset);
920 /* Cleanup and release all dfilter resources */
922 dfilter_free(dfcode);
925 /* Don't freeze/thaw the list when doing live capture */
926 /*new_packet_list_thaw();*/
928 if (cf->state == FILE_READ_ABORTED) {
929 /* Well, the user decided to abort the read. We're only called
930 when the child capture process closes the pipe to us (meaning
931 it's probably exited), so we can just close the capture
932 file; we return CF_READ_ABORTED so our caller can do whatever
933 is appropriate when that happens. */
935 return CF_READ_ABORTED;
938 if (auto_scroll_live && cf->count != 0)
939 new_packet_list_moveto_end();
941 /* We're done reading sequentially through the file. */
942 cf->state = FILE_READ_DONE;
944 /* We're done reading sequentially through the file; close the
945 sequential I/O side, to free up memory it requires. */
946 wtap_sequential_close(cf->wth);
948 /* Allow the protocol dissectors to free up memory that they
949 * don't need after the sequential run-through of the packets. */
950 postseq_cleanup_all_protocols();
952 /* Update the file encapsulation; it might have changed based on the
953 packets we've read. */
954 cf->lnk_t = wtap_file_encap(cf->wth);
956 /* Update the details in the file-set dialog, as the capture file
957 * has likely grown since we first stat-ed it */
958 fileset_update_file(cf->filename);
961 /* We got an error reading the capture file.
962 XXX - pop up a dialog box? */
963 return CF_READ_ERROR;
968 #endif /* HAVE_LIBPCAP */
971 cf_get_display_name(capture_file *cf)
975 /* Return a name to use in displays */
976 if (!cf->is_tempfile) {
977 /* Get the last component of the file name, and use that. */
979 displayname = g_filename_display_basename(cf->filename);
981 displayname=g_strdup("(No file)");
984 /* The file we read is a temporary file from a live capture or
985 a merge operation; we don't mention its name, but, if it's
986 from a capture, give the source of the capture. */
988 displayname = g_strdup(cf->source);
990 displayname = g_strdup("(Untitled)");
996 void cf_set_tempfile_source(capture_file *cf, gchar *source) {
1002 cf->source = g_strdup(source);
1004 cf->source = g_strdup("");
1008 const gchar *cf_get_tempfile_source(capture_file *cf) {
1016 /* XXX - use a macro instead? */
1018 cf_get_packet_count(capture_file *cf)
1023 /* XXX - use a macro instead? */
1025 cf_set_packet_count(capture_file *cf, int packet_count)
1027 cf->count = packet_count;
1030 /* XXX - use a macro instead? */
1032 cf_is_tempfile(capture_file *cf)
1034 return cf->is_tempfile;
1037 void cf_set_tempfile(capture_file *cf, gboolean is_tempfile)
1039 cf->is_tempfile = is_tempfile;
1043 /* XXX - use a macro instead? */
1044 void cf_set_drops_known(capture_file *cf, gboolean drops_known)
1046 cf->drops_known = drops_known;
1049 /* XXX - use a macro instead? */
1050 void cf_set_drops(capture_file *cf, guint32 drops)
1055 /* XXX - use a macro instead? */
1056 gboolean cf_get_drops_known(capture_file *cf)
1058 return cf->drops_known;
1061 /* XXX - use a macro instead? */
1062 guint32 cf_get_drops(capture_file *cf)
1067 void cf_set_rfcode(capture_file *cf, dfilter_t *rfcode)
1069 cf->rfcode = rfcode;
1073 find_and_mark_frame_depended_upon(gpointer data, gpointer user_data)
1075 frame_data *dependent_fd;
1076 guint32 dependent_frame = GPOINTER_TO_UINT(data);
1077 capture_file *cf = (capture_file *)user_data;
1079 dependent_fd = frame_data_sequence_find(cf->frames, dependent_frame);
1080 dependent_fd->flags.dependent_of_displayed = 1;
1084 add_packet_to_packet_list(frame_data *fdata, capture_file *cf,
1085 dfilter_t *dfcode, gboolean filtering_tap_listeners,
1087 union wtap_pseudo_header *pseudo_header, const guchar *buf,
1089 gboolean add_to_packet_list)
1091 gboolean create_proto_tree = FALSE;
1096 cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
1098 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
1099 &first_ts, &prev_dis_ts, &prev_cap_ts);
1102 + we have a display filter and are re-applying it;
1103 + we have tap listeners with filters;
1104 + we have tap listeners that require a protocol tree;
1106 allocate a protocol tree root node, so that we'll construct
1107 a protocol tree against which a filter expression can be
1109 if ((dfcode != NULL && refilter) ||
1110 filtering_tap_listeners || (tap_flags & TL_REQUIRES_PROTO_TREE))
1111 create_proto_tree = TRUE;
1113 /* Dissect the frame. */
1114 epan_dissect_init(&edt, create_proto_tree, FALSE);
1116 if (dfcode != NULL && refilter) {
1117 epan_dissect_prime_dfilter(&edt, dfcode);
1120 tap_queue_init(&edt);
1121 epan_dissect_run(&edt, pseudo_header, buf, fdata, cinfo);
1122 tap_push_tapped_queue(&edt);
1124 /* If we have a display filter, apply it if we're refiltering, otherwise
1125 leave the "passed_dfilter" flag alone.
1127 If we don't have a display filter, set "passed_dfilter" to 1. */
1128 if (dfcode != NULL) {
1130 fdata->flags.passed_dfilter = dfilter_apply_edt(dfcode, &edt) ? 1 : 0;
1132 if (fdata->flags.passed_dfilter) {
1133 /* This frame passed the display filter but it may depend on other
1134 * (potentially not displayed) frames. Find those frames and mark them
1137 g_slist_foreach(edt.pi.dependent_frames, find_and_mark_frame_depended_upon, cf);
1141 fdata->flags.passed_dfilter = 1;
1143 if(fdata->flags.passed_dfilter || fdata->flags.ref_time)
1144 cf->displayed_count++;
1146 if (add_to_packet_list) {
1147 /* We fill the needed columns from new_packet_list */
1148 row = new_packet_list_append(cinfo, fdata, &edt.pi);
1151 if(fdata->flags.passed_dfilter || fdata->flags.ref_time)
1153 frame_data_set_after_dissect(fdata, &cum_bytes, &prev_dis_ts);
1155 /* If we haven't yet seen the first frame, this is it.
1157 XXX - we must do this before we add the row to the display,
1158 as, if the display's GtkCList's selection mode is
1159 GTK_SELECTION_BROWSE, when the first entry is added to it,
1160 "cf_select_packet()" will be called, and it will fetch the row
1161 data for the 0th row, and will get a null pointer rather than
1162 "fdata", as "gtk_clist_append()" won't yet have returned and
1163 thus "gtk_clist_set_row_data()" won't yet have been called.
1165 We thus need to leave behind bread crumbs so that
1166 "cf_select_packet()" can find this frame. See the comment
1167 in "cf_select_packet()". */
1168 if (cf->first_displayed == 0)
1169 cf->first_displayed = fdata->num;
1171 /* This is the last frame we've seen so far. */
1172 cf->last_displayed = fdata->num;
1175 epan_dissect_cleanup(&edt);
1179 /* read in a new packet */
1180 /* returns the row of the new packet in the packet list or -1 if not displayed */
1182 read_packet(capture_file *cf, dfilter_t *dfcode,
1183 gboolean filtering_tap_listeners, guint tap_flags, gint64 offset)
1185 const struct wtap_pkthdr *phdr = wtap_phdr(cf->wth);
1186 union wtap_pseudo_header *pseudo_header = wtap_pseudoheader(cf->wth);
1187 const guchar *buf = wtap_buf_ptr(cf->wth);
1194 /* Add this packet's link-layer encapsulation type to cf->linktypes, if
1195 it's not already there.
1196 XXX - yes, this is O(N), so if every packet had a different
1197 link-layer encapsulation type, it'd be O(N^2) to read the file, but
1198 there are probably going to be a small number of encapsulation types
1200 cf_add_encapsulation_type(cf, phdr->pkt_encap);
1202 /* The frame number of this packet is one more than the count of
1203 frames in the file so far. */
1204 framenum = cf->count + 1;
1206 frame_data_init(&fdlocal, framenum, phdr, offset, cum_bytes);
1211 epan_dissect_init(&edt, TRUE, FALSE);
1212 epan_dissect_prime_dfilter(&edt, cf->rfcode);
1213 epan_dissect_run(&edt, pseudo_header, buf, &fdlocal, NULL);
1214 passed = dfilter_apply_edt(cf->rfcode, &edt);
1215 epan_dissect_cleanup(&edt);
1219 /* This does a shallow copy of fdlocal, which is good enough. */
1220 fdata = frame_data_sequence_add(cf->frames, &fdlocal);
1223 if (fdlocal.opt_comment != NULL)
1224 cf->packet_comment_count++;
1225 cf->f_datalen = offset + fdlocal.cap_len;
1227 if (!cf->redissecting) {
1228 row = add_packet_to_packet_list(fdata, cf, dfcode,
1229 filtering_tap_listeners, tap_flags,
1230 pseudo_header, buf, TRUE, TRUE);
1238 cf_merge_files(char **out_filenamep, int in_file_count,
1239 char *const *in_filenames, int file_type, gboolean do_append)
1241 merge_in_file_t *in_files, *in_file;
1246 int open_err, read_err, write_err, close_err;
1250 gboolean got_read_error = FALSE, got_write_error = FALSE;
1252 progdlg_t *progbar = NULL;
1254 gint64 f_len, file_pos;
1256 GTimeVal start_time;
1257 gchar status_str[100];
1258 gint64 progbar_nextstep;
1259 gint64 progbar_quantum;
1260 gchar *display_basename;
1262 /* open the input files */
1263 if (!merge_open_in_files(in_file_count, in_filenames, &in_files,
1264 &open_err, &err_info, &err_fileno)) {
1266 cf_open_failure_alert_box(in_filenames[err_fileno], open_err, err_info,
1271 if (*out_filenamep != NULL) {
1272 out_filename = *out_filenamep;
1273 out_fd = ws_open(out_filename, O_CREAT|O_TRUNC|O_BINARY, 0600);
1277 out_fd = create_tempfile(&tmpname, "wireshark");
1280 out_filename = g_strdup(tmpname);
1281 *out_filenamep = out_filename;
1285 merge_close_in_files(in_file_count, in_files);
1287 cf_open_failure_alert_box(out_filename, open_err, NULL, TRUE, file_type);
1291 pdh = wtap_dump_fdopen(out_fd, file_type,
1292 merge_select_frame_type(in_file_count, in_files),
1293 merge_max_snapshot_length(in_file_count, in_files),
1294 FALSE /* compressed */, &open_err);
1297 merge_close_in_files(in_file_count, in_files);
1299 cf_open_failure_alert_box(out_filename, open_err, err_info, TRUE,
1304 /* Get the sum of the sizes of all the files. */
1306 for (i = 0; i < in_file_count; i++)
1307 f_len += in_files[i].size;
1309 /* Update the progress bar when it gets to this value. */
1310 progbar_nextstep = 0;
1311 /* When we reach the value that triggers a progress bar update,
1312 bump that value by this amount. */
1313 progbar_quantum = f_len/N_PROGBAR_UPDATES;
1314 /* Progress so far. */
1318 g_get_current_time(&start_time);
1320 /* do the merge (or append) */
1323 in_file = merge_append_read_packet(in_file_count, in_files, &read_err,
1326 in_file = merge_read_packet(in_file_count, in_files, &read_err,
1328 if (in_file == NULL) {
1333 if (read_err != 0) {
1334 /* I/O error reading from in_file */
1335 got_read_error = TRUE;
1339 /* Get the sum of the data offsets in all of the files. */
1341 for (i = 0; i < in_file_count; i++)
1342 data_offset += in_files[i].data_offset;
1344 /* Create the progress bar if necessary.
1345 We check on every iteration of the loop, so that it takes no
1346 longer than the standard time to create it (otherwise, for a
1347 large file, we might take considerably longer than that standard
1348 time in order to get to the next progress bar step). */
1349 if (progbar == NULL) {
1350 progbar = delayed_create_progress_dlg(NULL, "Merging", "files",
1351 FALSE, &stop_flag, &start_time, progbar_val);
1354 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
1355 when we update it, we have to run the GTK+ main loop to get it
1356 to repaint what's pending, and doing so may involve an "ioctl()"
1357 to see if there's any pending input from an X server, and doing
1358 that for every packet can be costly, especially on a big file. */
1359 if (data_offset >= progbar_nextstep) {
1360 /* Get the sum of the seek positions in all of the files. */
1362 for (i = 0; i < in_file_count; i++)
1363 file_pos += wtap_read_so_far(in_files[i].wth);
1364 progbar_val = (gfloat) file_pos / (gfloat) f_len;
1365 if (progbar_val > 1.0f) {
1366 /* Some file probably grew while we were reading it.
1367 That "shouldn't happen", so we'll just clip the progress
1371 if (progbar != NULL) {
1372 g_snprintf(status_str, sizeof(status_str),
1373 "%" G_GINT64_MODIFIER "dKB of %" G_GINT64_MODIFIER "dKB",
1374 file_pos / 1024, f_len / 1024);
1375 update_progress_dlg(progbar, progbar_val, status_str);
1377 progbar_nextstep += progbar_quantum;
1381 /* Well, the user decided to abort the merge. */
1385 if (!wtap_dump(pdh, wtap_phdr(in_file->wth), wtap_pseudoheader(in_file->wth),
1386 wtap_buf_ptr(in_file->wth), &write_err)) {
1387 got_write_error = TRUE;
1392 /* We're done merging the files; destroy the progress bar if it was created. */
1393 if (progbar != NULL)
1394 destroy_progress_dlg(progbar);
1396 merge_close_in_files(in_file_count, in_files);
1397 if (!got_read_error && !got_write_error) {
1398 if (!wtap_dump_close(pdh, &write_err))
1399 got_write_error = TRUE;
1401 wtap_dump_close(pdh, &close_err);
1403 if (got_read_error) {
1405 * Find the file on which we got the error, and report the error.
1407 for (i = 0; i < in_file_count; i++) {
1408 if (in_files[i].state == GOT_ERROR) {
1409 /* Put up a message box noting that a read failed somewhere along
1411 display_basename = g_filename_display_basename(in_files[i].filename);
1414 case WTAP_ERR_UNSUPPORTED_ENCAP:
1415 simple_error_message_box(
1416 "The capture file %s has a packet with a network type that Wireshark doesn't support.\n(%s)",
1417 display_basename, err_info);
1421 case WTAP_ERR_CANT_READ:
1422 simple_error_message_box(
1423 "An attempt to read from the capture file %s failed for"
1424 " some unknown reason.", display_basename);
1427 case WTAP_ERR_SHORT_READ:
1428 simple_error_message_box(
1429 "The capture file %s appears to have been cut short"
1430 " in the middle of a packet.", display_basename);
1433 case WTAP_ERR_BAD_FILE:
1434 simple_error_message_box(
1435 "The capture file %s appears to be damaged or corrupt.\n(%s)",
1436 display_basename, err_info);
1440 case WTAP_ERR_DECOMPRESS:
1441 simple_error_message_box(
1442 "The compressed capture file %s appears to be damaged or corrupt.\n"
1443 "(%s)", display_basename, err_info);
1448 simple_error_message_box(
1449 "An error occurred while reading the"
1450 " capture file %s: %s.",
1451 display_basename, wtap_strerror(read_err));
1454 g_free(display_basename);
1459 if (got_write_error) {
1460 /* Put up an alert box for the write error. */
1461 if (write_err < 0) {
1462 /* Wiretap error. */
1463 switch (write_err) {
1465 case WTAP_ERR_UNSUPPORTED_ENCAP:
1467 * This is a problem with the particular frame we're writing;
1468 * note that, and give the frame number.
1470 display_basename = g_filename_display_basename(in_file->filename);
1471 simple_error_message_box(
1472 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.",
1473 in_file->packet_num, display_basename,
1474 wtap_file_type_string(file_type));
1475 g_free(display_basename);
1479 display_basename = g_filename_display_basename(out_filename);
1480 simple_error_message_box(
1481 "An error occurred while writing to the file \"%s\": %s.",
1482 out_filename, wtap_strerror(write_err));
1483 g_free(display_basename);
1488 write_failure_alert_box(out_filename, write_err);
1492 if (got_read_error || got_write_error || stop_flag) {
1493 /* Callers aren't expected to treat an error or an explicit abort
1494 differently - we put up error dialogs ourselves, so they don't
1502 cf_filter_packets(capture_file *cf, gchar *dftext, gboolean force)
1504 const char *filter_new = dftext ? dftext : "";
1505 const char *filter_old = cf->dfilter ? cf->dfilter : "";
1507 GTimeVal start_time;
1509 /* if new filter equals old one, do nothing unless told to do so */
1510 if (!force && strcmp(filter_new, filter_old) == 0) {
1516 if (dftext == NULL) {
1517 /* The new filter is an empty filter (i.e., display all packets).
1518 * so leave dfcode==NULL
1522 * We have a filter; make a copy of it (as we'll be saving it),
1523 * and try to compile it.
1525 dftext = g_strdup(dftext);
1526 if (!dfilter_compile(dftext, &dfcode)) {
1527 /* The attempt failed; report an error. */
1528 gchar *safe_dftext = simple_dialog_format_message(dftext);
1529 gchar *safe_dfilter_error_msg = simple_dialog_format_message(dfilter_error_msg);
1530 simple_message_box(ESD_TYPE_ERROR, NULL,
1531 "See the help for a description of the display filter syntax.",
1532 "\"%s\" isn't a valid display filter: %s",
1533 safe_dftext, safe_dfilter_error_msg);
1534 g_free(safe_dfilter_error_msg);
1535 g_free(safe_dftext);
1541 if (dfcode == NULL) {
1542 /* Yes - free the filter text, and set it to null. */
1548 /* We have a valid filter. Replace the current filter. */
1549 g_free(cf->dfilter);
1550 cf->dfilter = dftext;
1551 g_get_current_time(&start_time);
1554 /* Now rescan the packet list, applying the new filter, but not
1555 throwing away information constructed on a previous pass. */
1556 if (dftext == NULL) {
1557 rescan_packets(cf, "Resetting", "Filter", TRUE, FALSE);
1559 rescan_packets(cf, "Filtering", dftext, TRUE, FALSE);
1562 /* Cleanup and release all dfilter resources */
1563 dfilter_free(dfcode);
1569 cf_reftime_packets(capture_file *cf)
1572 ref_time_packets(cf);
1576 cf_redissect_packets(capture_file *cf)
1578 rescan_packets(cf, "Reprocessing", "all packets", TRUE, TRUE);
1582 cf_read_frame_r(capture_file *cf, frame_data *fdata,
1583 union wtap_pseudo_header *pseudo_header, guint8 *pd)
1587 gchar *display_basename;
1589 #ifdef WANT_PACKET_EDITOR
1590 /* if fdata->file_off == -1 it means packet was edited, and we must find data inside edited_frames tree */
1591 if (G_UNLIKELY(fdata->file_off == -1)) {
1592 const modified_frame_data *frame = (const modified_frame_data *) g_tree_lookup(cf->edited_frames, GINT_TO_POINTER(fdata->num));
1595 simple_error_message_box("fdata->file_off == -1, but can't find modified frame!");
1599 *pseudo_header = frame->ph;
1600 memcpy(pd, frame->pd, fdata->cap_len);
1605 if (!wtap_seek_read(cf->wth, fdata->file_off, pseudo_header, pd,
1606 fdata->cap_len, &err, &err_info)) {
1607 display_basename = g_filename_display_basename(cf->filename);
1610 case WTAP_ERR_UNSUPPORTED_ENCAP:
1611 simple_error_message_box("The file \"%s\" has a packet with a network type that Wireshark doesn't support.\n(%s)",
1612 display_basename, err_info);
1616 case WTAP_ERR_BAD_FILE:
1617 simple_error_message_box("An error occurred while reading from the file \"%s\": %s.\n(%s)",
1618 display_basename, wtap_strerror(err), err_info);
1623 simple_error_message_box(
1624 "An error occurred while reading from the file \"%s\": %s.",
1625 display_basename, wtap_strerror(err));
1628 g_free(display_basename);
1635 cf_read_frame(capture_file *cf, frame_data *fdata)
1637 return cf_read_frame_r(cf, fdata, &cf->pseudo_header, cf->pd);
1640 /* Rescan the list of packets, reconstructing the CList.
1642 "action" describes why we're doing this; it's used in the progress
1645 "action_item" describes what we're doing; it's used in the progress
1648 "refilter" is TRUE if we need to re-evaluate the filter expression.
1650 "redissect" is TRUE if we need to make the dissectors reconstruct
1651 any state information they have (because a preference that affects
1652 some dissector has changed, meaning some dissector might construct
1653 its state differently from the way it was constructed the last time). */
1655 rescan_packets(capture_file *cf, const char *action, const char *action_item,
1656 gboolean refilter, gboolean redissect)
1658 /* Rescan packets new packet list */
1661 progdlg_t *progbar = NULL;
1664 frame_data *selected_frame, *preceding_frame, *following_frame, *prev_frame;
1665 int selected_frame_num, preceding_frame_num, following_frame_num, prev_frame_num;
1666 gboolean selected_frame_seen;
1668 GTimeVal start_time;
1669 gchar status_str[100];
1670 int progbar_nextstep;
1671 int progbar_quantum;
1673 gboolean filtering_tap_listeners;
1675 gboolean add_to_packet_list = FALSE;
1678 /* Compile the current display filter.
1679 * We assume this will not fail since cf->dfilter is only set in
1680 * cf_filter IFF the filter was valid.
1682 compiled = dfilter_compile(cf->dfilter, &dfcode);
1683 g_assert(!cf->dfilter || (compiled && dfcode));
1685 /* Do we have any tap listeners with filters? */
1686 filtering_tap_listeners = have_filtering_tap_listeners();
1688 /* Get the union of the flags for all tap listeners. */
1689 tap_flags = union_of_tap_listener_flags();
1691 reset_tap_listeners();
1692 /* Which frame, if any, is the currently selected frame?
1693 XXX - should the selected frame or the focus frame be the "current"
1694 frame, that frame being the one from which "Find Frame" searches
1696 selected_frame = cf->current_frame;
1698 /* Mark frame num as not found */
1699 selected_frame_num = -1;
1701 /* Freeze the packet list while we redo it, so we don't get any
1702 screen updates while it happens. */
1703 new_packet_list_freeze();
1706 /* We need to re-initialize all the state information that protocols
1707 keep, because some preference that controls a dissector has changed,
1708 which might cause the state information to be constructed differently
1709 by that dissector. */
1711 /* We might receive new packets while redissecting, and we don't
1712 want to dissect those before their time. */
1713 cf->redissecting = TRUE;
1715 /* Cleanup all data structures used for dissection. */
1716 cleanup_dissection();
1717 /* Initialize all data structures used for dissection. */
1720 /* We need to redissect the packets so we have to discard our old
1721 * packet list store. */
1722 new_packet_list_clear();
1723 add_to_packet_list = TRUE;
1726 /* We don't yet know which will be the first and last frames displayed. */
1727 cf->first_displayed = 0;
1728 cf->last_displayed = 0;
1730 /* We currently don't display any packets */
1731 cf->displayed_count = 0;
1733 /* Iterate through the list of frames. Call a routine for each frame
1734 to check whether it should be displayed and, if so, add it to
1735 the display list. */
1736 nstime_set_unset(&first_ts);
1737 nstime_set_unset(&prev_dis_ts);
1738 nstime_set_unset(&prev_cap_ts);
1741 /* Update the progress bar when it gets to this value. */
1742 progbar_nextstep = 0;
1743 /* When we reach the value that triggers a progress bar update,
1744 bump that value by this amount. */
1745 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
1746 /* Count of packets at which we've looked. */
1748 /* Progress so far. */
1752 g_get_current_time(&start_time);
1754 /* no previous row yet */
1755 prev_frame_num = -1;
1758 preceding_frame_num = -1;
1759 preceding_frame = NULL;
1760 following_frame_num = -1;
1761 following_frame = NULL;
1763 selected_frame_seen = FALSE;
1765 for (framenum = 1; framenum <= cf->count; framenum++) {
1766 fdata = frame_data_sequence_find(cf->frames, framenum);
1768 /* Create the progress bar if necessary.
1769 We check on every iteration of the loop, so that it takes no
1770 longer than the standard time to create it (otherwise, for a
1771 large file, we might take considerably longer than that standard
1772 time in order to get to the next progress bar step). */
1773 if (progbar == NULL)
1774 progbar = delayed_create_progress_dlg(cf->window, action, action_item, TRUE,
1775 &stop_flag, &start_time,
1778 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
1779 when we update it, we have to run the GTK+ main loop to get it
1780 to repaint what's pending, and doing so may involve an "ioctl()"
1781 to see if there's any pending input from an X server, and doing
1782 that for every packet can be costly, especially on a big file. */
1783 if (count >= progbar_nextstep) {
1784 /* let's not divide by zero. I should never be started
1785 * with count == 0, so let's assert that
1787 g_assert(cf->count > 0);
1788 progbar_val = (gfloat) count / cf->count;
1790 if (progbar != NULL) {
1791 g_snprintf(status_str, sizeof(status_str),
1792 "%4u of %u frames", count, cf->count);
1793 update_progress_dlg(progbar, progbar_val, status_str);
1796 progbar_nextstep += progbar_quantum;
1800 /* Well, the user decided to abort the filtering. Just stop.
1802 XXX - go back to the previous filter? Users probably just
1803 want not to wait for a filtering operation to finish;
1804 unless we cancel by having no filter, reverting to the
1805 previous filter will probably be even more expensive than
1806 continuing the filtering, as it involves going back to the
1807 beginning and filtering, and even with no filter we currently
1808 have to re-generate the entire clist, which is also expensive.
1810 I'm not sure what Network Monitor does, but it doesn't appear
1811 to give you an unfiltered display if you cancel. */
1818 /* Since all state for the frame was destroyed, mark the frame
1819 * as not visited, free the GSList referring to the state
1820 * data (the per-frame data itself was freed by
1821 * "init_dissection()"), and null out the GSList pointer. */
1822 fdata->flags.visited = 0;
1823 frame_data_cleanup(fdata);
1826 if (redissect || refilter) {
1827 /* If we're redissecting or refiltering then any frame dependencies
1828 * from the previous dissection/filtering are no longer valid.
1830 fdata->flags.dependent_of_displayed = 0;
1833 if (!cf_read_frame(cf, fdata))
1834 break; /* error reading the frame */
1836 /* If the previous frame is displayed, and we haven't yet seen the
1837 selected frame, remember that frame - it's the closest one we've
1838 yet seen before the selected frame. */
1839 if (prev_frame_num != -1 && !selected_frame_seen && prev_frame->flags.passed_dfilter) {
1840 preceding_frame_num = prev_frame_num;
1841 preceding_frame = prev_frame;
1843 add_packet_to_packet_list(fdata, cf, dfcode, filtering_tap_listeners,
1844 tap_flags, &cf->pseudo_header, cf->pd,
1846 add_to_packet_list);
1848 /* If this frame is displayed, and this is the first frame we've
1849 seen displayed after the selected frame, remember this frame -
1850 it's the closest one we've yet seen at or after the selected
1852 if (fdata->flags.passed_dfilter && selected_frame_seen && following_frame_num == -1) {
1853 following_frame_num = fdata->num;
1854 following_frame = fdata;
1856 if (fdata == selected_frame) {
1857 selected_frame_seen = TRUE;
1858 if (fdata->flags.passed_dfilter)
1859 selected_frame_num = fdata->num;
1862 /* Remember this frame - it'll be the previous frame
1863 on the next pass through the loop. */
1864 prev_frame_num = fdata->num;
1868 /* We are done redissecting the packet list. */
1869 cf->redissecting = FALSE;
1872 /* Clear out what remains of the visited flags and per-frame data
1875 XXX - that may cause various forms of bogosity when dissecting
1876 these frames, as they won't have been seen by this sequential
1877 pass, but the only alternative I see is to keep scanning them
1878 even though the user requested that the scan stop, and that
1879 would leave the user stuck with an Wireshark grinding on
1880 until it finishes. Should we just stick them with that? */
1881 for (; framenum <= cf->count; framenum++) {
1882 fdata = frame_data_sequence_find(cf->frames, framenum);
1883 fdata->flags.visited = 0;
1884 frame_data_cleanup(fdata);
1888 /* We're done filtering the packets; destroy the progress bar if it
1890 if (progbar != NULL)
1891 destroy_progress_dlg(progbar);
1893 /* Unfreeze the packet list. */
1894 if (!add_to_packet_list)
1895 new_packet_list_recreate_visible_rows();
1897 /* Compute the time it took to filter the file */
1898 compute_elapsed(&start_time);
1900 new_packet_list_thaw();
1902 if (selected_frame_num == -1) {
1903 /* The selected frame didn't pass the filter. */
1904 if (selected_frame == NULL) {
1905 /* That's because there *was* no selected frame. Make the first
1906 displayed frame the current frame. */
1907 selected_frame_num = 0;
1909 /* Find the nearest displayed frame to the selected frame (whether
1910 it's before or after that frame) and make that the current frame.
1911 If the next and previous displayed frames are equidistant from the
1912 selected frame, choose the next one. */
1913 g_assert(following_frame == NULL ||
1914 following_frame->num >= selected_frame->num);
1915 g_assert(preceding_frame == NULL ||
1916 preceding_frame->num <= selected_frame->num);
1917 if (following_frame == NULL) {
1918 /* No frame after the selected frame passed the filter, so we
1919 have to select the last displayed frame before the selected
1921 selected_frame_num = preceding_frame_num;
1922 selected_frame = preceding_frame;
1923 } else if (preceding_frame == NULL) {
1924 /* No frame before the selected frame passed the filter, so we
1925 have to select the first displayed frame after the selected
1927 selected_frame_num = following_frame_num;
1928 selected_frame = following_frame;
1930 /* Frames before and after the selected frame passed the filter, so
1931 we'll select the previous frame */
1932 selected_frame_num = preceding_frame_num;
1933 selected_frame = preceding_frame;
1938 if (selected_frame_num == -1) {
1939 /* There are no frames displayed at all. */
1940 cf_unselect_packet(cf);
1942 /* Either the frame that was selected passed the filter, or we've
1943 found the nearest displayed frame to that frame. Select it, make
1944 it the focus row, and make it visible. */
1945 /* Set to invalid to force update of packet list and packet details */
1946 cf->current_row = -1;
1947 if (selected_frame_num == 0) {
1948 new_packet_list_select_first_row();
1950 if (!new_packet_list_select_row_from_data(selected_frame)) {
1951 /* We didn't find a row corresponding to this frame.
1952 This means that the frame isn't being displayed currently,
1953 so we can't select it. */
1954 simple_message_box(ESD_TYPE_INFO, NULL,
1955 "The capture file is probably not fully dissected.",
1956 "End of capture exceeded!");
1961 /* Cleanup and release all dfilter resources */
1962 dfilter_free(dfcode);
1967 * Scan trough all frame data and recalculate the ref time
1968 * without rereading the file.
1969 * XXX - do we need a progres bar or is this fast enough?
1972 ref_time_packets(capture_file *cf)
1977 nstime_set_unset(&first_ts);
1978 nstime_set_unset(&prev_dis_ts);
1981 for (framenum = 1; framenum <= cf->count; framenum++) {
1982 fdata = frame_data_sequence_find(cf->frames, framenum);
1984 /* just add some value here until we know if it is being displayed or not */
1985 fdata->cum_bytes = cum_bytes + fdata->pkt_len;
1991 /* If we don't have the time stamp of the first packet in the
1992 capture, it's because this is the first packet. Save the time
1993 stamp of this packet as the time stamp of the first packet. */
1994 if (nstime_is_unset(&first_ts)) {
1995 first_ts = fdata->abs_ts;
1997 /* if this frames is marked as a reference time frame, reset
1998 firstsec and firstusec to this frame */
1999 if(fdata->flags.ref_time){
2000 first_ts = fdata->abs_ts;
2003 /* If we don't have the time stamp of the previous displayed packet,
2004 it's because this is the first displayed packet. Save the time
2005 stamp of this packet as the time stamp of the previous displayed
2007 if (nstime_is_unset(&prev_dis_ts)) {
2008 prev_dis_ts = fdata->abs_ts;
2011 /* Get the time elapsed between the first packet and this packet. */
2012 nstime_delta(&fdata->rel_ts, &fdata->abs_ts, &first_ts);
2014 /* If it's greater than the current elapsed time, set the elapsed time
2015 to it (we check for "greater than" so as not to be confused by
2016 time moving backwards). */
2017 if ((gint32)cf->elapsed_time.secs < fdata->rel_ts.secs
2018 || ((gint32)cf->elapsed_time.secs == fdata->rel_ts.secs && (gint32)cf->elapsed_time.nsecs < fdata->rel_ts.nsecs)) {
2019 cf->elapsed_time = fdata->rel_ts;
2022 /* If this frame is displayed, get the time elapsed between the
2023 previous displayed packet and this packet. */
2024 if( fdata->flags.passed_dfilter ) {
2025 nstime_delta(&fdata->del_dis_ts, &fdata->abs_ts, &prev_dis_ts);
2026 prev_dis_ts = fdata->abs_ts;
2032 if( (fdata->flags.passed_dfilter) || (fdata->flags.ref_time) ){
2033 /* This frame either passed the display filter list or is marked as
2034 a time reference frame. All time reference frames are displayed
2035 even if they dont pass the display filter */
2036 if(fdata->flags.ref_time){
2037 /* if this was a TIME REF frame we should reset the cum_bytes field */
2038 cum_bytes = fdata->pkt_len;
2039 fdata->cum_bytes = cum_bytes;
2041 /* increase cum_bytes with this packets length */
2042 cum_bytes += fdata->pkt_len;
2055 process_specified_packets(capture_file *cf, packet_range_t *range,
2056 const char *string1, const char *string2, gboolean terminate_is_stop,
2057 gboolean (*callback)(capture_file *, frame_data *,
2058 union wtap_pseudo_header *, const guint8 *, void *),
2059 void *callback_args)
2063 union wtap_pseudo_header pseudo_header;
2064 guint8 pd[WTAP_MAX_PACKET_SIZE+1];
2065 psp_return_t ret = PSP_FINISHED;
2067 progdlg_t *progbar = NULL;
2070 gboolean progbar_stop_flag;
2071 GTimeVal progbar_start_time;
2072 gchar progbar_status_str[100];
2073 int progbar_nextstep;
2074 int progbar_quantum;
2075 range_process_e process_this;
2077 /* Update the progress bar when it gets to this value. */
2078 progbar_nextstep = 0;
2079 /* When we reach the value that triggers a progress bar update,
2080 bump that value by this amount. */
2081 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
2082 /* Count of packets at which we've looked. */
2084 /* Progress so far. */
2087 progbar_stop_flag = FALSE;
2088 g_get_current_time(&progbar_start_time);
2091 packet_range_process_init(range);
2093 /* Iterate through all the packets, printing the packets that
2094 were selected by the current display filter. */
2095 for (framenum = 1; framenum <= cf->count; framenum++) {
2096 fdata = frame_data_sequence_find(cf->frames, framenum);
2098 /* Create the progress bar if necessary.
2099 We check on every iteration of the loop, so that it takes no
2100 longer than the standard time to create it (otherwise, for a
2101 large file, we might take considerably longer than that standard
2102 time in order to get to the next progress bar step). */
2103 if (progbar == NULL)
2104 progbar = delayed_create_progress_dlg(cf->window, string1, string2,
2107 &progbar_start_time,
2110 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
2111 when we update it, we have to run the GTK+ main loop to get it
2112 to repaint what's pending, and doing so may involve an "ioctl()"
2113 to see if there's any pending input from an X server, and doing
2114 that for every packet can be costly, especially on a big file. */
2115 if (progbar_count >= progbar_nextstep) {
2116 /* let's not divide by zero. I should never be started
2117 * with count == 0, so let's assert that
2119 g_assert(cf->count > 0);
2120 progbar_val = (gfloat) progbar_count / cf->count;
2122 if (progbar != NULL) {
2123 g_snprintf(progbar_status_str, sizeof(progbar_status_str),
2124 "%4u of %u packets", progbar_count, cf->count);
2125 update_progress_dlg(progbar, progbar_val, progbar_status_str);
2128 progbar_nextstep += progbar_quantum;
2131 if (progbar_stop_flag) {
2132 /* Well, the user decided to abort the operation. Just stop,
2133 and arrange to return PSP_STOPPED to our caller, so they know
2134 it was stopped explicitly. */
2141 if (range != NULL) {
2142 /* do we have to process this packet? */
2143 process_this = packet_range_process_packet(range, fdata);
2144 if (process_this == range_process_next) {
2145 /* this packet uninteresting, continue with next one */
2147 } else if (process_this == range_processing_finished) {
2148 /* all interesting packets processed, stop the loop */
2153 /* Get the packet */
2154 if (!cf_read_frame_r(cf, fdata, &pseudo_header, pd)) {
2155 /* Attempt to get the packet failed. */
2159 /* Process the packet */
2160 if (!callback(cf, fdata, &pseudo_header, pd, callback_args)) {
2161 /* Callback failed. We assume it reported the error appropriately. */
2167 /* We're done printing the packets; destroy the progress bar if
2169 if (progbar != NULL)
2170 destroy_progress_dlg(progbar);
2176 gboolean construct_protocol_tree;
2178 } retap_callback_args_t;
2181 retap_packet(capture_file *cf _U_, frame_data *fdata,
2182 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2185 retap_callback_args_t *args = argsp;
2188 epan_dissect_init(&edt, args->construct_protocol_tree, FALSE);
2189 tap_queue_init(&edt);
2190 epan_dissect_run(&edt, pseudo_header, pd, fdata, args->cinfo);
2191 tap_push_tapped_queue(&edt);
2192 epan_dissect_cleanup(&edt);
2198 cf_retap_packets(capture_file *cf)
2200 packet_range_t range;
2201 retap_callback_args_t callback_args;
2202 gboolean filtering_tap_listeners;
2205 /* Do we have any tap listeners with filters? */
2206 filtering_tap_listeners = have_filtering_tap_listeners();
2208 tap_flags = union_of_tap_listener_flags();
2210 /* If any tap listeners have filters, or require the protocol tree,
2211 construct the protocol tree. */
2212 callback_args.construct_protocol_tree = filtering_tap_listeners ||
2213 (tap_flags & TL_REQUIRES_PROTO_TREE);
2215 /* If any tap listeners require the columns, construct them. */
2216 callback_args.cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
2218 /* Reset the tap listeners. */
2219 reset_tap_listeners();
2221 /* Iterate through the list of packets, dissecting all packets and
2222 re-running the taps. */
2223 packet_range_init(&range);
2224 packet_range_process_init(&range);
2225 switch (process_specified_packets(cf, &range, "Recalculating statistics on",
2226 "all packets", TRUE, retap_packet,
2229 /* Completed successfully. */
2233 /* Well, the user decided to abort the refiltering.
2234 Return CF_READ_ABORTED so our caller knows they did that. */
2235 return CF_READ_ABORTED;
2238 /* Error while retapping. */
2239 return CF_READ_ERROR;
2242 g_assert_not_reached();
2247 print_args_t *print_args;
2248 gboolean print_header_line;
2249 char *header_line_buf;
2250 int header_line_buf_len;
2251 gboolean print_formfeed;
2252 gboolean print_separator;
2256 int num_visible_cols;
2258 } print_callback_args_t;
2261 print_packet(capture_file *cf, frame_data *fdata,
2262 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2265 print_callback_args_t *args = argsp;
2272 gboolean proto_tree_needed;
2273 char bookmark_name[9+10+1]; /* "__frameNNNNNNNNNN__\0" */
2274 char bookmark_title[6+10+1]; /* "Frame NNNNNNNNNN__\0" */
2276 /* Create the protocol tree, and make it visible, if we're printing
2277 the dissection or the hex data.
2278 XXX - do we need it if we're just printing the hex data? */
2280 args->print_args->print_dissections != print_dissections_none || args->print_args->print_hex || have_custom_cols(&cf->cinfo);
2281 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2283 /* Fill in the column information if we're printing the summary
2285 if (args->print_args->print_summary) {
2286 col_custom_prime_edt(&edt, &cf->cinfo);
2287 epan_dissect_run(&edt, pseudo_header, pd, fdata, &cf->cinfo);
2288 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2290 epan_dissect_run(&edt, pseudo_header, pd, fdata, NULL);
2292 if (args->print_formfeed) {
2293 if (!new_page(args->print_args->stream))
2296 if (args->print_separator) {
2297 if (!print_line(args->print_args->stream, 0, ""))
2303 * We generate bookmarks, if the output format supports them.
2304 * The name is "__frameN__".
2306 g_snprintf(bookmark_name, sizeof bookmark_name, "__frame%u__", fdata->num);
2308 if (args->print_args->print_summary) {
2309 if (args->print_header_line) {
2310 if (!print_line(args->print_args->stream, 0, args->header_line_buf))
2312 args->print_header_line = FALSE; /* we might not need to print any more */
2314 cp = &args->line_buf[0];
2316 for (i = 0; i < args->num_visible_cols; i++) {
2317 /* Find the length of the string for this column. */
2318 column_len = (int) strlen(cf->cinfo.col_data[args->visible_cols[i]]);
2319 if (args->col_widths[i] > column_len)
2320 column_len = args->col_widths[i];
2322 /* Make sure there's room in the line buffer for the column; if not,
2323 double its length. */
2324 line_len += column_len + 1; /* "+1" for space */
2325 if (line_len > args->line_buf_len) {
2326 cp_off = (int) (cp - args->line_buf);
2327 args->line_buf_len = 2 * line_len;
2328 args->line_buf = g_realloc(args->line_buf, args->line_buf_len + 1);
2329 cp = args->line_buf + cp_off;
2332 /* Right-justify the packet number column. */
2333 if (cf->cinfo.col_fmt[args->visible_cols[i]] == COL_NUMBER)
2334 g_snprintf(cp, column_len+1, "%*s", args->col_widths[i], cf->cinfo.col_data[args->visible_cols[i]]);
2336 g_snprintf(cp, column_len+1, "%-*s", args->col_widths[i], cf->cinfo.col_data[args->visible_cols[i]]);
2338 if (i != args->num_visible_cols - 1)
2344 * Generate a bookmark, using the summary line as the title.
2346 if (!print_bookmark(args->print_args->stream, bookmark_name,
2350 if (!print_line(args->print_args->stream, 0, args->line_buf))
2354 * Generate a bookmark, using "Frame N" as the title, as we're not
2355 * printing the summary line.
2357 g_snprintf(bookmark_title, sizeof bookmark_title, "Frame %u", fdata->num);
2358 if (!print_bookmark(args->print_args->stream, bookmark_name,
2361 } /* if (print_summary) */
2363 if (args->print_args->print_dissections != print_dissections_none) {
2364 if (args->print_args->print_summary) {
2365 /* Separate the summary line from the tree with a blank line. */
2366 if (!print_line(args->print_args->stream, 0, ""))
2370 /* Print the information in that tree. */
2371 if (!proto_tree_print(args->print_args, &edt, args->print_args->stream))
2374 /* Print a blank line if we print anything after this (aka more than one packet). */
2375 args->print_separator = TRUE;
2377 /* Print a header line if we print any more packet summaries */
2378 args->print_header_line = TRUE;
2381 if (args->print_args->print_hex) {
2382 /* Print the full packet data as hex. */
2383 if (!print_hex_data(args->print_args->stream, &edt))
2386 /* Print a blank line if we print anything after this (aka more than one packet). */
2387 args->print_separator = TRUE;
2389 /* Print a header line if we print any more packet summaries */
2390 args->print_header_line = TRUE;
2391 } /* if (args->print_args->print_dissections != print_dissections_none) */
2393 epan_dissect_cleanup(&edt);
2395 /* do we want to have a formfeed between each packet from now on? */
2396 if(args->print_args->print_formfeed) {
2397 args->print_formfeed = TRUE;
2403 epan_dissect_cleanup(&edt);
2408 cf_print_packets(capture_file *cf, print_args_t *print_args)
2410 print_callback_args_t callback_args;
2413 int i, cp_off, column_len, line_len;
2414 int num_visible_col = 0, last_visible_col = 0, visible_col_count;
2419 callback_args.print_args = print_args;
2420 callback_args.print_header_line = TRUE;
2421 callback_args.header_line_buf = NULL;
2422 callback_args.header_line_buf_len = 256;
2423 callback_args.print_formfeed = FALSE;
2424 callback_args.print_separator = FALSE;
2425 callback_args.line_buf = NULL;
2426 callback_args.line_buf_len = 256;
2427 callback_args.col_widths = NULL;
2428 callback_args.num_visible_cols = 0;
2429 callback_args.visible_cols = NULL;
2431 if (!print_preamble(print_args->stream, cf->filename)) {
2432 destroy_print_stream(print_args->stream);
2433 return CF_PRINT_WRITE_ERROR;
2436 if (print_args->print_summary) {
2437 /* We're printing packet summaries. Allocate the header line buffer
2438 and get the column widths. */
2439 callback_args.header_line_buf = g_malloc(callback_args.header_line_buf_len + 1);
2441 /* Find the number of visible columns and the last visible column */
2442 for (i = 0; i < prefs.num_cols; i++) {
2444 clp = g_list_nth(prefs.col_list, i);
2445 if (clp == NULL) /* Sanity check, Invalid column requested */
2448 cfmt = (fmt_data *) clp->data;
2449 if (cfmt->visible) {
2451 last_visible_col = i;
2455 /* Find the widths for each of the columns - maximum of the
2456 width of the title and the width of the data - and construct
2457 a buffer with a line containing the column titles. */
2458 callback_args.num_visible_cols = num_visible_col;
2459 callback_args.col_widths = (gint *) g_malloc(sizeof(gint) * num_visible_col);
2460 callback_args.visible_cols = (gint *) g_malloc(sizeof(gint) * num_visible_col);
2461 cp = &callback_args.header_line_buf[0];
2463 visible_col_count = 0;
2464 for (i = 0; i < cf->cinfo.num_cols; i++) {
2466 clp = g_list_nth(prefs.col_list, i);
2467 if (clp == NULL) /* Sanity check, Invalid column requested */
2470 cfmt = (fmt_data *) clp->data;
2471 if (cfmt->visible == FALSE)
2474 /* Save the order of visible columns */
2475 callback_args.visible_cols[visible_col_count] = i;
2477 /* Don't pad the last column. */
2478 if (i == last_visible_col)
2479 callback_args.col_widths[visible_col_count] = 0;
2481 callback_args.col_widths[visible_col_count] = (gint) strlen(cf->cinfo.col_title[i]);
2482 data_width = get_column_char_width(get_column_format(i));
2483 if (data_width > callback_args.col_widths[visible_col_count])
2484 callback_args.col_widths[visible_col_count] = data_width;
2487 /* Find the length of the string for this column. */
2488 column_len = (int) strlen(cf->cinfo.col_title[i]);
2489 if (callback_args.col_widths[i] > column_len)
2490 column_len = callback_args.col_widths[visible_col_count];
2492 /* Make sure there's room in the line buffer for the column; if not,
2493 double its length. */
2494 line_len += column_len + 1; /* "+1" for space */
2495 if (line_len > callback_args.header_line_buf_len) {
2496 cp_off = (int) (cp - callback_args.header_line_buf);
2497 callback_args.header_line_buf_len = 2 * line_len;
2498 callback_args.header_line_buf = g_realloc(callback_args.header_line_buf,
2499 callback_args.header_line_buf_len + 1);
2500 cp = callback_args.header_line_buf + cp_off;
2503 /* Right-justify the packet number column. */
2504 /* if (cf->cinfo.col_fmt[i] == COL_NUMBER)
2505 g_snprintf(cp, column_len+1, "%*s", callback_args.col_widths[visible_col_count], cf->cinfo.col_title[i]);
2507 g_snprintf(cp, column_len+1, "%-*s", callback_args.col_widths[visible_col_count], cf->cinfo.col_title[i]);
2509 if (i != cf->cinfo.num_cols - 1)
2512 visible_col_count++;
2516 /* Now start out the main line buffer with the same length as the
2517 header line buffer. */
2518 callback_args.line_buf_len = callback_args.header_line_buf_len;
2519 callback_args.line_buf = g_malloc(callback_args.line_buf_len + 1);
2520 } /* if (print_summary) */
2522 /* Iterate through the list of packets, printing the packets we were
2524 ret = process_specified_packets(cf, &print_args->range, "Printing",
2525 "selected packets", TRUE, print_packet,
2528 g_free(callback_args.header_line_buf);
2529 g_free(callback_args.line_buf);
2530 g_free(callback_args.col_widths);
2531 g_free(callback_args.visible_cols);
2536 /* Completed successfully. */
2540 /* Well, the user decided to abort the printing.
2542 XXX - note that what got generated before they did that
2543 will get printed if we're piping to a print program; we'd
2544 have to write to a file and then hand that to the print
2545 program to make it actually not print anything. */
2549 /* Error while printing.
2551 XXX - note that what got generated before they did that
2552 will get printed if we're piping to a print program; we'd
2553 have to write to a file and then hand that to the print
2554 program to make it actually not print anything. */
2555 destroy_print_stream(print_args->stream);
2556 return CF_PRINT_WRITE_ERROR;
2559 if (!print_finale(print_args->stream)) {
2560 destroy_print_stream(print_args->stream);
2561 return CF_PRINT_WRITE_ERROR;
2564 if (!destroy_print_stream(print_args->stream))
2565 return CF_PRINT_WRITE_ERROR;
2571 write_pdml_packet(capture_file *cf _U_, frame_data *fdata,
2572 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2578 /* Create the protocol tree, but don't fill in the column information. */
2579 epan_dissect_init(&edt, TRUE, TRUE);
2580 epan_dissect_run(&edt, pseudo_header, pd, fdata, NULL);
2582 /* Write out the information in that tree. */
2583 proto_tree_write_pdml(&edt, fh);
2585 epan_dissect_cleanup(&edt);
2591 cf_write_pdml_packets(capture_file *cf, print_args_t *print_args)
2596 fh = ws_fopen(print_args->file, "w");
2598 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2600 write_pdml_preamble(fh, cf->filename);
2603 return CF_PRINT_WRITE_ERROR;
2606 /* Iterate through the list of packets, printing the packets we were
2608 ret = process_specified_packets(cf, &print_args->range, "Writing PDML",
2609 "selected packets", TRUE,
2610 write_pdml_packet, fh);
2615 /* Completed successfully. */
2619 /* Well, the user decided to abort the printing. */
2623 /* Error while printing. */
2625 return CF_PRINT_WRITE_ERROR;
2628 write_pdml_finale(fh);
2631 return CF_PRINT_WRITE_ERROR;
2634 /* XXX - check for an error */
2641 write_psml_packet(capture_file *cf, frame_data *fdata,
2642 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2647 gboolean proto_tree_needed;
2649 /* Fill in the column information, only create the protocol tree
2650 if having custom columns. */
2651 proto_tree_needed = have_custom_cols(&cf->cinfo);
2652 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2653 col_custom_prime_edt(&edt, &cf->cinfo);
2654 epan_dissect_run(&edt, pseudo_header, pd, fdata, &cf->cinfo);
2655 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2657 /* Write out the information in that tree. */
2658 proto_tree_write_psml(&edt, fh);
2660 epan_dissect_cleanup(&edt);
2666 cf_write_psml_packets(capture_file *cf, print_args_t *print_args)
2671 fh = ws_fopen(print_args->file, "w");
2673 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2675 write_psml_preamble(fh);
2678 return CF_PRINT_WRITE_ERROR;
2681 /* Iterate through the list of packets, printing the packets we were
2683 ret = process_specified_packets(cf, &print_args->range, "Writing PSML",
2684 "selected packets", TRUE,
2685 write_psml_packet, fh);
2690 /* Completed successfully. */
2694 /* Well, the user decided to abort the printing. */
2698 /* Error while printing. */
2700 return CF_PRINT_WRITE_ERROR;
2703 write_psml_finale(fh);
2706 return CF_PRINT_WRITE_ERROR;
2709 /* XXX - check for an error */
2716 write_csv_packet(capture_file *cf, frame_data *fdata,
2717 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2722 gboolean proto_tree_needed;
2724 /* Fill in the column information, only create the protocol tree
2725 if having custom columns. */
2726 proto_tree_needed = have_custom_cols(&cf->cinfo);
2727 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2728 col_custom_prime_edt(&edt, &cf->cinfo);
2729 epan_dissect_run(&edt, pseudo_header, pd, fdata, &cf->cinfo);
2730 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2732 /* Write out the information in that tree. */
2733 proto_tree_write_csv(&edt, fh);
2735 epan_dissect_cleanup(&edt);
2741 cf_write_csv_packets(capture_file *cf, print_args_t *print_args)
2746 fh = ws_fopen(print_args->file, "w");
2748 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2750 write_csv_preamble(fh);
2753 return CF_PRINT_WRITE_ERROR;
2756 /* Iterate through the list of packets, printing the packets we were
2758 ret = process_specified_packets(cf, &print_args->range, "Writing CSV",
2759 "selected packets", TRUE,
2760 write_csv_packet, fh);
2765 /* Completed successfully. */
2769 /* Well, the user decided to abort the printing. */
2773 /* Error while printing. */
2775 return CF_PRINT_WRITE_ERROR;
2778 write_csv_finale(fh);
2781 return CF_PRINT_WRITE_ERROR;
2784 /* XXX - check for an error */
2791 write_carrays_packet(capture_file *cf _U_, frame_data *fdata,
2792 union wtap_pseudo_header *pseudo_header,
2793 const guint8 *pd, void *argsp)
2798 epan_dissect_init(&edt, TRUE, TRUE);
2799 epan_dissect_run(&edt, pseudo_header, pd, fdata, NULL);
2800 proto_tree_write_carrays(fdata->num, fh, &edt);
2801 epan_dissect_cleanup(&edt);
2807 cf_write_carrays_packets(capture_file *cf, print_args_t *print_args)
2812 fh = ws_fopen(print_args->file, "w");
2815 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2817 write_carrays_preamble(fh);
2821 return CF_PRINT_WRITE_ERROR;
2824 /* Iterate through the list of packets, printing the packets we were
2826 ret = process_specified_packets(cf, &print_args->range,
2828 "selected packets", TRUE,
2829 write_carrays_packet, fh);
2832 /* Completed successfully. */
2835 /* Well, the user decided to abort the printing. */
2838 /* Error while printing. */
2840 return CF_PRINT_WRITE_ERROR;
2843 write_carrays_finale(fh);
2847 return CF_PRINT_WRITE_ERROR;
2855 cf_find_packet_protocol_tree(capture_file *cf, const char *string,
2856 search_direction dir)
2860 mdata.string = string;
2861 mdata.string_len = strlen(string);
2862 return find_packet(cf, match_protocol_tree, &mdata, dir);
2866 cf_find_string_protocol_tree(capture_file *cf, proto_tree *tree, match_data *mdata)
2868 mdata->frame_matched = FALSE;
2869 mdata->string = convert_string_case(cf->sfilter, cf->case_type);
2870 mdata->string_len = strlen(mdata->string);
2872 /* Iterate through all the nodes looking for matching text */
2873 proto_tree_children_foreach(tree, match_subtree_text, mdata);
2874 return mdata->frame_matched ? MR_MATCHED : MR_NOTMATCHED;
2878 match_protocol_tree(capture_file *cf, frame_data *fdata, void *criterion)
2880 match_data *mdata = criterion;
2883 /* Load the frame's data. */
2884 if (!cf_read_frame(cf, fdata)) {
2885 /* Attempt to get the packet failed. */
2889 /* Construct the protocol tree, including the displayed text */
2890 epan_dissect_init(&edt, TRUE, TRUE);
2891 /* We don't need the column information */
2892 epan_dissect_run(&edt, &cf->pseudo_header, cf->pd, fdata, NULL);
2894 /* Iterate through all the nodes, seeing if they have text that matches. */
2896 mdata->frame_matched = FALSE;
2897 proto_tree_children_foreach(edt.tree, match_subtree_text, mdata);
2898 epan_dissect_cleanup(&edt);
2899 return mdata->frame_matched ? MR_MATCHED : MR_NOTMATCHED;
2903 match_subtree_text(proto_node *node, gpointer data)
2905 match_data *mdata = (match_data *) data;
2906 const gchar *string = mdata->string;
2907 size_t string_len = mdata->string_len;
2908 capture_file *cf = mdata->cf;
2909 field_info *fi = PNODE_FINFO(node);
2910 gchar label_str[ITEM_LABEL_LENGTH];
2917 g_assert(fi && "dissection with an invisible proto tree?");
2919 if (mdata->frame_matched) {
2920 /* We already had a match; don't bother doing any more work. */
2924 /* Don't match invisible entries. */
2925 if (PROTO_ITEM_IS_HIDDEN(node))
2928 /* was a free format label produced? */
2930 label_ptr = fi->rep->representation;
2932 /* no, make a generic label */
2933 label_ptr = label_str;
2934 proto_item_fill_label(fi, label_str);
2937 /* Does that label match? */
2938 label_len = strlen(label_ptr);
2939 for (i = 0; i < label_len; i++) {
2940 c_char = label_ptr[i];
2942 c_char = toupper(c_char);
2943 if (c_char == string[c_match]) {
2945 if (c_match == string_len) {
2946 /* No need to look further; we have a match */
2947 mdata->frame_matched = TRUE;
2955 /* Recurse into the subtree, if it exists */
2956 if (node->first_child != NULL)
2957 proto_tree_children_foreach(node, match_subtree_text, mdata);
2961 cf_find_packet_summary_line(capture_file *cf, const char *string,
2962 search_direction dir)
2966 mdata.string = string;
2967 mdata.string_len = strlen(string);
2968 return find_packet(cf, match_summary_line, &mdata, dir);
2972 match_summary_line(capture_file *cf, frame_data *fdata, void *criterion)
2974 match_data *mdata = criterion;
2975 const gchar *string = mdata->string;
2976 size_t string_len = mdata->string_len;
2978 const char *info_column;
2979 size_t info_column_len;
2980 match_result result = MR_NOTMATCHED;
2986 /* Load the frame's data. */
2987 if (!cf_read_frame(cf, fdata)) {
2988 /* Attempt to get the packet failed. */
2992 /* Don't bother constructing the protocol tree */
2993 epan_dissect_init(&edt, FALSE, FALSE);
2994 /* Get the column information */
2995 epan_dissect_run(&edt, &cf->pseudo_header, cf->pd, fdata, &cf->cinfo);
2997 /* Find the Info column */
2998 for (colx = 0; colx < cf->cinfo.num_cols; colx++) {
2999 if (cf->cinfo.fmt_matx[colx][COL_INFO]) {
3000 /* Found it. See if we match. */
3001 info_column = edt.pi.cinfo->col_data[colx];
3002 info_column_len = strlen(info_column);
3003 for (i = 0; i < info_column_len; i++) {
3004 c_char = info_column[i];
3006 c_char = toupper(c_char);
3007 if (c_char == string[c_match]) {
3009 if (c_match == string_len) {
3010 result = MR_MATCHED;
3019 epan_dissect_cleanup(&edt);
3026 } cbs_t; /* "Counted byte string" */
3029 cf_find_packet_data(capture_file *cf, const guint8 *string, size_t string_size,
3030 search_direction dir)
3035 info.data_len = string_size;
3037 /* String or hex search? */
3039 /* String search - what type of string? */
3040 switch (cf->scs_type) {
3042 case SCS_ASCII_AND_UNICODE:
3043 return find_packet(cf, match_ascii_and_unicode, &info, dir);
3046 return find_packet(cf, match_ascii, &info, dir);
3049 return find_packet(cf, match_unicode, &info, dir);
3052 g_assert_not_reached();
3056 return find_packet(cf, match_binary, &info, dir);
3060 match_ascii_and_unicode(capture_file *cf, frame_data *fdata, void *criterion)
3062 cbs_t *info = criterion;
3063 const guint8 *ascii_text = info->data;
3064 size_t textlen = info->data_len;
3065 match_result result;
3071 /* Load the frame's data. */
3072 if (!cf_read_frame(cf, fdata)) {
3073 /* Attempt to get the packet failed. */
3077 result = MR_NOTMATCHED;
3078 buf_len = fdata->pkt_len;
3080 while (i < buf_len) {
3083 c_char = toupper(c_char);
3084 if (c_char != '\0') {
3085 if (c_char == ascii_text[c_match]) {
3087 if (c_match == textlen) {
3088 result = MR_MATCHED;
3089 cf->search_pos = i; /* Save the position of the last character
3090 for highlighting the field. */
3095 g_assert(i>=c_match);
3096 i -= (guint32)c_match;
3106 match_ascii(capture_file *cf, frame_data *fdata, void *criterion)
3108 cbs_t *info = criterion;
3109 const guint8 *ascii_text = info->data;
3110 size_t textlen = info->data_len;
3111 match_result result;
3117 /* Load the frame's data. */
3118 if (!cf_read_frame(cf, fdata)) {
3119 /* Attempt to get the packet failed. */
3123 result = MR_NOTMATCHED;
3124 buf_len = fdata->pkt_len;
3126 while (i < buf_len) {
3129 c_char = toupper(c_char);
3130 if (c_char == ascii_text[c_match]) {
3132 if (c_match == textlen) {
3133 result = MR_MATCHED;
3134 cf->search_pos = i; /* Save the position of the last character
3135 for highlighting the field. */
3140 g_assert(i>=c_match);
3141 i -= (guint32)c_match;
3151 match_unicode(capture_file *cf, frame_data *fdata, void *criterion)
3153 cbs_t *info = criterion;
3154 const guint8 *ascii_text = info->data;
3155 size_t textlen = info->data_len;
3156 match_result result;
3162 /* Load the frame's data. */
3163 if (!cf_read_frame(cf, fdata)) {
3164 /* Attempt to get the packet failed. */
3168 result = MR_NOTMATCHED;
3169 buf_len = fdata->pkt_len;
3171 while (i < buf_len) {
3174 c_char = toupper(c_char);
3175 if (c_char == ascii_text[c_match]) {
3177 if (c_match == textlen) {
3178 result = MR_MATCHED;
3179 cf->search_pos = i; /* Save the position of the last character
3180 for highlighting the field. */
3186 g_assert(i>=(c_match*2));
3187 i -= (guint32)c_match*2;
3196 match_binary(capture_file *cf, frame_data *fdata, void *criterion)
3198 cbs_t *info = criterion;
3199 const guint8 *binary_data = info->data;
3200 size_t datalen = info->data_len;
3201 match_result result;
3206 /* Load the frame's data. */
3207 if (!cf_read_frame(cf, fdata)) {
3208 /* Attempt to get the packet failed. */
3212 result = MR_NOTMATCHED;
3213 buf_len = fdata->pkt_len;
3215 while (i < buf_len) {
3216 if (cf->pd[i] == binary_data[c_match]) {
3218 if (c_match == datalen) {
3219 result = MR_MATCHED;
3220 cf->search_pos = i; /* Save the position of the last character
3221 for highlighting the field. */
3226 g_assert(i>=c_match);
3227 i -= (guint32)c_match;
3236 cf_find_packet_dfilter(capture_file *cf, dfilter_t *sfcode,
3237 search_direction dir)
3239 return find_packet(cf, match_dfilter, sfcode, dir);
3243 cf_find_packet_dfilter_string(capture_file *cf, const char *filter,
3244 search_direction dir)
3249 if (!dfilter_compile(filter, &sfcode)) {
3251 * XXX - this shouldn't happen, as the filter string is machine
3256 if (sfcode == NULL) {
3258 * XXX - this shouldn't happen, as the filter string is machine
3263 result = find_packet(cf, match_dfilter, sfcode, dir);
3264 dfilter_free(sfcode);
3269 match_dfilter(capture_file *cf, frame_data *fdata, void *criterion)
3271 dfilter_t *sfcode = criterion;
3273 match_result result;
3275 /* Load the frame's data. */
3276 if (!cf_read_frame(cf, fdata)) {
3277 /* Attempt to get the packet failed. */
3281 epan_dissect_init(&edt, TRUE, FALSE);
3282 epan_dissect_prime_dfilter(&edt, sfcode);
3283 epan_dissect_run(&edt, &cf->pseudo_header, cf->pd, fdata, NULL);
3284 result = dfilter_apply_edt(sfcode, &edt) ? MR_MATCHED : MR_NOTMATCHED;
3285 epan_dissect_cleanup(&edt);
3290 cf_find_packet_marked(capture_file *cf, search_direction dir)
3292 return find_packet(cf, match_marked, NULL, dir);
3296 match_marked(capture_file *cf _U_, frame_data *fdata, void *criterion _U_)
3298 return fdata->flags.marked ? MR_MATCHED : MR_NOTMATCHED;
3302 cf_find_packet_time_reference(capture_file *cf, search_direction dir)
3304 return find_packet(cf, match_time_reference, NULL, dir);
3308 match_time_reference(capture_file *cf _U_, frame_data *fdata, void *criterion _U_)
3310 return fdata->flags.ref_time ? MR_MATCHED : MR_NOTMATCHED;
3314 find_packet(capture_file *cf,
3315 match_result (*match_function)(capture_file *, frame_data *, void *),
3316 void *criterion, search_direction dir)
3318 frame_data *start_fd;
3321 frame_data *new_fd = NULL;
3322 progdlg_t *progbar = NULL;
3327 GTimeVal start_time;
3328 gchar status_str[100];
3329 int progbar_nextstep;
3330 int progbar_quantum;
3332 match_result result;
3334 start_fd = cf->current_frame;
3335 if (start_fd != NULL) {
3336 /* Iterate through the list of packets, starting at the packet we've
3337 picked, calling a routine to run the filter on the packet, see if
3338 it matches, and stop if so. */
3340 framenum = start_fd->num;
3342 /* Update the progress bar when it gets to this value. */
3343 progbar_nextstep = 0;
3344 /* When we reach the value that triggers a progress bar update,
3345 bump that value by this amount. */
3346 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
3347 /* Progress so far. */
3351 g_get_current_time(&start_time);
3353 title = cf->sfilter?cf->sfilter:"";
3355 /* Create the progress bar if necessary.
3356 We check on every iteration of the loop, so that it takes no
3357 longer than the standard time to create it (otherwise, for a
3358 large file, we might take considerably longer than that standard
3359 time in order to get to the next progress bar step). */
3360 if (progbar == NULL)
3361 progbar = delayed_create_progress_dlg(cf->window, "Searching", title,
3362 FALSE, &stop_flag, &start_time, progbar_val);
3364 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
3365 when we update it, we have to run the GTK+ main loop to get it
3366 to repaint what's pending, and doing so may involve an "ioctl()"
3367 to see if there's any pending input from an X server, and doing
3368 that for every packet can be costly, especially on a big file. */
3369 if (count >= progbar_nextstep) {
3370 /* let's not divide by zero. I should never be started
3371 * with count == 0, so let's assert that
3373 g_assert(cf->count > 0);
3375 progbar_val = (gfloat) count / cf->count;
3377 if (progbar != NULL) {
3378 g_snprintf(status_str, sizeof(status_str),
3379 "%4u of %u packets", count, cf->count);
3380 update_progress_dlg(progbar, progbar_val, status_str);
3383 progbar_nextstep += progbar_quantum;
3387 /* Well, the user decided to abort the search. Go back to the
3388 frame where we started. */
3393 /* Go past the current frame. */
3394 if (dir == SD_BACKWARD) {
3395 /* Go on to the previous frame. */
3396 if (framenum == 1) {
3398 * XXX - other apps have a bit more of a detailed message
3399 * for this, and instead of offering "OK" and "Cancel",
3400 * they offer things such as "Continue" and "Cancel";
3401 * we need an API for popping up alert boxes with
3402 * {Verb} and "Cancel".
3405 if (prefs.gui_find_wrap)
3407 statusbar_push_temporary_msg("Search reached the beginning. Continuing at end.");
3408 framenum = cf->count; /* wrap around */
3412 statusbar_push_temporary_msg("Search reached the beginning.");
3413 framenum = start_fd->num; /* stay on previous packet */
3418 /* Go on to the next frame. */
3419 if (framenum == cf->count) {
3420 if (prefs.gui_find_wrap)
3422 statusbar_push_temporary_msg("Search reached the end. Continuing at beginning.");
3423 framenum = 1; /* wrap around */
3427 statusbar_push_temporary_msg("Search reached the end.");
3428 framenum = start_fd->num; /* stay on previous packet */
3433 fdata = frame_data_sequence_find(cf->frames, framenum);
3437 /* Is this packet in the display? */
3438 if (fdata->flags.passed_dfilter) {
3439 /* Yes. Does it match the search criterion? */
3440 result = (*match_function)(cf, fdata, criterion);
3441 if (result == MR_ERROR) {
3442 /* Error; our caller has reported the error. Go back to the frame
3443 where we started. */
3446 } else if (result == MR_MATCHED) {
3447 /* Yes. Go to the new frame. */
3453 if (fdata == start_fd) {
3454 /* We're back to the frame we were on originally, and that frame
3455 doesn't match the search filter. The search failed. */
3460 /* We're done scanning the packets; destroy the progress bar if it
3462 if (progbar != NULL)
3463 destroy_progress_dlg(progbar);
3466 if (new_fd != NULL) {
3467 /* Find and select */
3468 cf->search_in_progress = TRUE;
3469 found = new_packet_list_select_row_from_data(new_fd);
3470 cf->search_in_progress = FALSE;
3471 cf->search_pos = 0; /* Reset the position */
3473 /* We didn't find a row corresponding to this frame.
3474 This means that the frame isn't being displayed currently,
3475 so we can't select it. */
3476 simple_message_box(ESD_TYPE_INFO, NULL,
3477 "The capture file is probably not fully dissected.",
3478 "End of capture exceeded!");
3481 return TRUE; /* success */
3483 return FALSE; /* failure */
3487 cf_goto_frame(capture_file *cf, guint fnumber)
3491 fdata = frame_data_sequence_find(cf->frames, fnumber);
3493 if (fdata == NULL) {
3494 /* we didn't find a packet with that packet number */
3495 statusbar_push_temporary_msg("There is no packet number %u.", fnumber);
3496 return FALSE; /* we failed to go to that packet */
3498 if (!fdata->flags.passed_dfilter) {
3499 /* that packet currently isn't displayed */
3500 /* XXX - add it to the set of displayed packets? */
3501 statusbar_push_temporary_msg("Packet number %u isn't displayed.", fnumber);
3502 return FALSE; /* we failed to go to that packet */
3505 if (!new_packet_list_select_row_from_data(fdata)) {
3506 /* We didn't find a row corresponding to this frame.
3507 This means that the frame isn't being displayed currently,
3508 so we can't select it. */
3509 simple_message_box(ESD_TYPE_INFO, NULL,
3510 "The capture file is probably not fully dissected.",
3511 "End of capture exceeded!");
3514 return TRUE; /* we got to that packet */
3518 cf_goto_top_frame(void)
3520 /* Find and select */
3521 new_packet_list_select_first_row();
3522 return TRUE; /* we got to that packet */
3526 cf_goto_bottom_frame(void)
3528 /* Find and select */
3529 new_packet_list_select_last_row();
3530 return TRUE; /* we got to that packet */
3534 * Go to frame specified by currently selected protocol tree item.
3537 cf_goto_framenum(capture_file *cf)
3539 header_field_info *hfinfo;
3542 if (cf->finfo_selected) {
3543 hfinfo = cf->finfo_selected->hfinfo;
3545 if (hfinfo->type == FT_FRAMENUM) {
3546 framenum = fvalue_get_uinteger(&cf->finfo_selected->value);
3548 return cf_goto_frame(cf, framenum);
3555 /* Select the packet on a given row. */
3557 cf_select_packet(capture_file *cf, int row)
3559 epan_dissect_t *old_edt;
3562 /* Get the frame data struct pointer for this frame */
3563 fdata = new_packet_list_get_row_data(row);
3565 if (fdata == NULL) {
3566 /* XXX - if a GtkCList's selection mode is GTK_SELECTION_BROWSE, when
3567 the first entry is added to it by "real_insert_row()", that row
3568 is selected (see "real_insert_row()", in "ui/gtk/gtkclist.c", in both
3569 our version and the vanilla GTK+ version).
3571 This means that a "select-row" signal is emitted; this causes
3572 "packet_list_select_cb()" to be called, which causes "cf_select_packet()"
3575 "cf_select_packet()" fetches, above, the data associated with the
3576 row that was selected; however, as "gtk_clist_append()", which
3577 called "real_insert_row()", hasn't yet returned, we haven't yet
3578 associated any data with that row, so we get back a null pointer.
3580 We can't assume that there's only one frame in the frame list,
3581 either, as we may be filtering the display.
3583 We therefore assume that, if "row" is 0, i.e. the first row
3584 is being selected, and "cf->first_displayed" equals
3585 "cf->last_displayed", i.e. there's only one frame being
3586 displayed, that frame is the frame we want.
3588 This means we have to set "cf->first_displayed" and
3589 "cf->last_displayed" before adding the row to the
3590 GtkCList; see the comment in "add_packet_to_packet_list()". */
3592 if (row == 0 && cf->first_displayed == cf->last_displayed)
3593 fdata = frame_data_sequence_find(cf->frames, cf->first_displayed);
3596 /* If fdata _still_ isn't set simply give up. */
3597 if (fdata == NULL) {
3601 /* Get the data in that frame. */
3602 if (!cf_read_frame (cf, fdata)) {
3606 /* Record that this frame is the current frame. */
3607 cf->current_frame = fdata;
3608 cf->current_row = row;
3611 /* Create the logical protocol tree. */
3612 /* We don't need the columns here. */
3613 cf->edt = epan_dissect_new(TRUE, TRUE);
3615 tap_build_interesting(cf->edt);
3616 epan_dissect_run(cf->edt, &cf->pseudo_header, cf->pd, cf->current_frame,
3619 dfilter_macro_build_ftv_cache(cf->edt->tree);
3621 cf_callback_invoke(cf_cb_packet_selected, cf);
3623 if (old_edt != NULL)
3624 epan_dissect_free(old_edt);
3628 /* Unselect the selected packet, if any. */
3630 cf_unselect_packet(capture_file *cf)
3632 epan_dissect_t *old_edt = cf->edt;
3636 /* No packet is selected. */
3637 cf->current_frame = NULL;
3638 cf->current_row = 0;
3640 cf_callback_invoke(cf_cb_packet_unselected, cf);
3642 /* No protocol tree means no selected field. */
3643 cf_unselect_field(cf);
3645 /* Destroy the epan_dissect_t for the unselected packet. */
3646 if (old_edt != NULL)
3647 epan_dissect_free(old_edt);
3650 /* Unset the selected protocol tree field, if any. */
3652 cf_unselect_field(capture_file *cf)
3654 cf->finfo_selected = NULL;
3656 cf_callback_invoke(cf_cb_field_unselected, cf);
3660 * Mark a particular frame.
3663 cf_mark_frame(capture_file *cf, frame_data *frame)
3665 if (! frame->flags.marked) {
3666 frame->flags.marked = TRUE;
3667 if (cf->count > cf->marked_count)
3673 * Unmark a particular frame.
3676 cf_unmark_frame(capture_file *cf, frame_data *frame)
3678 if (frame->flags.marked) {
3679 frame->flags.marked = FALSE;
3680 if (cf->marked_count > 0)
3686 * Ignore a particular frame.
3689 cf_ignore_frame(capture_file *cf, frame_data *frame)
3691 if (! frame->flags.ignored) {
3692 frame->flags.ignored = TRUE;
3693 if (cf->count > cf->ignored_count)
3694 cf->ignored_count++;
3699 * Un-ignore a particular frame.
3702 cf_unignore_frame(capture_file *cf, frame_data *frame)
3704 if (frame->flags.ignored) {
3705 frame->flags.ignored = FALSE;
3706 if (cf->ignored_count > 0)
3707 cf->ignored_count--;
3712 * Read the comment in SHB block
3716 cf_read_shb_comment(capture_file *cf)
3718 wtapng_section_t *shb_inf;
3719 const gchar *temp_str;
3721 /* Get info from SHB */
3722 shb_inf = wtap_file_get_shb_info(cf->wth);
3725 temp_str = shb_inf->opt_comment;
3733 cf_update_capture_comment(capture_file *cf, gchar *comment)
3735 wtapng_section_t *shb_inf;
3737 /* Get info from SHB */
3738 shb_inf = wtap_file_get_shb_info(cf->wth);
3740 /* See if the comment has changed or not */
3741 if (shb_inf && shb_inf->opt_comment) {
3742 if (strcmp(shb_inf->opt_comment, comment) == 0) {
3751 /* The comment has changed, let's update it */
3752 wtap_write_shb_comment(cf->wth, comment);
3753 /* Mark the file as having unsaved changes */
3754 cf->unsaved_changes = TRUE;
3758 cf_update_packet_comment(capture_file *cf, frame_data *fdata, gchar *comment)
3760 if (fdata->opt_comment != NULL) {
3761 /* OK, remove the old comment. */
3762 g_free(fdata->opt_comment);
3763 fdata->opt_comment = NULL;
3764 cf->packet_comment_count--;
3766 if (comment != NULL) {
3767 /* Add the new comment. */
3768 fdata->opt_comment = comment;
3769 cf->packet_comment_count++;
3772 /* OK, we have unsaved changes. */
3773 cf->unsaved_changes = TRUE;
3777 * Does this capture file have any comments?
3780 cf_has_comments(capture_file *cf)
3782 return (cf_read_shb_comment(cf) != NULL || cf->packet_comment_count != 0);
3789 } save_callback_args_t;
3792 * Save a capture to a file, in a particular format, saving either
3793 * all packets, all currently-displayed packets, or all marked packets.
3795 * Returns TRUE if it succeeds, FALSE otherwise; if it fails, it pops
3796 * up a message box for the failure.
3799 save_packet(capture_file *cf _U_, frame_data *fdata,
3800 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
3803 save_callback_args_t *args = argsp;
3804 struct wtap_pkthdr hdr;
3806 gchar *display_basename;
3808 /* init the wtap header for saving */
3809 /* XXX - these are the only flags that correspond to data that we have
3810 in the frame_data structure and that matter on a per-packet basis.
3812 For WTAP_HAS_CAP_LEN, either the file format has separate "captured"
3813 and "on the wire" lengths, or it doesn't.
3815 For WTAP_HAS_DROP_COUNT, Wiretap doesn't actually supply the value
3818 For WTAP_HAS_PACK_FLAGS, we currently don't save the FCS length
3819 from the packet flags. */
3820 hdr.presence_flags = 0;
3821 if (fdata->flags.has_ts)
3822 hdr.presence_flags |= WTAP_HAS_TS;
3823 if (fdata->flags.has_ts)
3824 hdr.presence_flags |= WTAP_HAS_INTERFACE_ID;
3825 hdr.ts.secs = fdata->abs_ts.secs;
3826 hdr.ts.nsecs = fdata->abs_ts.nsecs;
3827 hdr.caplen = fdata->cap_len;
3828 hdr.len = fdata->pkt_len;
3829 hdr.pkt_encap = fdata->lnk_t;
3831 hdr.interface_id = fdata->interface_id; /* identifier of the interface. */
3833 hdr.opt_comment = fdata->opt_comment; /* NULL if not available */
3836 hdr.pack_flags = /* XXX - 0 for now (any value for "we don't have it"?) */
3838 /* and save the packet */
3839 if (!wtap_dump(args->pdh, &hdr, pseudo_header, pd, &err)) {
3841 /* Wiretap error. */
3844 case WTAP_ERR_UNSUPPORTED_ENCAP:
3846 * This is a problem with the particular frame we're writing;
3847 * note that, and give the frame number.
3849 simple_error_message_box(
3850 "Frame %u has a network type that can't be saved in a \"%s\" file.",
3851 fdata->num, wtap_file_type_string(args->file_type));
3855 display_basename = g_filename_display_basename(args->fname);
3856 simple_error_message_box(
3857 "An error occurred while writing to the file \"%s\": %s.",
3858 display_basename, wtap_strerror(err));
3859 g_free(display_basename);
3864 write_failure_alert_box(args->fname, err);
3872 * Can this capture file be written out in any format using Wiretap
3873 * rather than by copying the raw data?
3876 cf_can_write_with_wiretap(capture_file *cf)
3880 for (ft = 0; ft < WTAP_NUM_FILE_TYPES; ft++) {
3881 /* To save a file with Wiretap, Wiretap has to handle that format,
3882 and its code to handle that format must be able to write a file
3883 with this file's encapsulation types. */
3884 if (wtap_dump_can_write_encaps(ft, cf->linktypes)) {
3885 /* OK, we can write it out in this type. */
3890 /* No, we couldn't save it in any format. */
3895 * Quick scan to find packet offsets.
3897 static cf_read_status_t
3898 rescan_file(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
3900 const struct wtap_pkthdr *phdr;
3905 progdlg_t *volatile progbar = NULL;
3907 volatile gint64 size;
3908 volatile float progbar_val;
3909 GTimeVal start_time;
3910 gchar status_str[100];
3911 volatile gint64 progbar_nextstep;
3912 volatile gint64 progbar_quantum;
3915 volatile int count = 0;
3917 volatile int displayed_once = 0;
3920 /* Close the old handle. */
3921 wtap_close(cf->wth);
3923 /* Open the new file. */
3924 cf->wth = wtap_open_offline(fname, err, &err_info, TRUE);
3925 if (cf->wth == NULL) {
3926 cf_open_failure_alert_box(fname, *err, err_info, FALSE, 0);
3927 return CF_READ_ERROR;
3930 /* We're scanning a file whose contents should be the same as what
3931 we had before, so we don't discard dissection state etc.. */
3934 /* Set the file name because we need it to set the follow stream filter.
3935 XXX - is that still true? We need it for other reasons, though,
3937 cf->filename = g_strdup(fname);
3939 /* Indicate whether it's a permanent or temporary file. */
3940 cf->is_tempfile = is_tempfile;
3942 /* No user changes yet. */
3943 cf->unsaved_changes = FALSE;
3945 cf->cd_t = wtap_file_type(cf->wth);
3946 cf->linktypes = g_array_sized_new(FALSE, FALSE, (guint) sizeof(int), 1);
3948 cf->snap = wtap_snapshot_length(cf->wth);
3949 if (cf->snap == 0) {
3950 /* Snapshot length not known. */
3951 cf->has_snap = FALSE;
3952 cf->snap = WTAP_MAX_PACKET_SIZE;
3954 cf->has_snap = TRUE;
3956 name_ptr = g_filename_display_basename(cf->filename);
3958 cf_callback_invoke(cf_cb_file_rescan_started, cf);
3960 /* Record whether the file is compressed.
3961 XXX - do we know this at open time? */
3962 cf->iscompressed = wtap_iscompressed(cf->wth);
3964 /* Find the size of the file. */
3965 size = wtap_file_size(cf->wth, NULL);
3967 /* Update the progress bar when it gets to this value. */
3968 progbar_nextstep = 0;
3969 /* When we reach the value that triggers a progress bar update,
3970 bump that value by this amount. */
3972 progbar_quantum = size/N_PROGBAR_UPDATES;
3973 if (progbar_quantum < MIN_QUANTUM)
3974 progbar_quantum = MIN_QUANTUM;
3976 progbar_quantum = 0;
3977 /* Progress so far. */
3981 g_get_current_time(&start_time);
3984 phdr = wtap_phdr(cf->wth);
3985 while ((wtap_read(cf->wth, err, &err_info, &data_offset))) {
3987 fdata = frame_data_sequence_find(cf->frames, framenum);
3988 fdata->file_off = data_offset;
3991 file_pos = wtap_read_so_far(cf->wth);
3993 /* Create the progress bar if necessary.
3994 * Check whether it should be created or not every MIN_NUMBER_OF_PACKET
3996 if ((progbar == NULL) && !(count % MIN_NUMBER_OF_PACKET)){
3997 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
3998 progbar = delayed_create_progress_dlg(cf->window, "Rescanning", name_ptr,
3999 TRUE, &stop_flag, &start_time, progbar_val);
4002 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
4003 when we update it, we have to run the GTK+ main loop to get it
4004 to repaint what's pending, and doing so may involve an "ioctl()"
4005 to see if there's any pending input from an X server, and doing
4006 that for every packet can be costly, especially on a big file. */
4007 if (file_pos >= progbar_nextstep) {
4008 if (progbar != NULL) {
4009 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
4010 /* update the packet bar content on the first run or frequently on very large files */
4012 if (progbar_quantum > 500000 || displayed_once == 0) {
4013 if ((auto_scroll_live || displayed_once == 0 || cf->displayed_count < 1000) && cf->count != 0) {
4015 packets_bar_update();
4018 #endif /* HAVE_LIBPCAP */
4019 update_progress_dlg(progbar, progbar_val, status_str);
4021 progbar_nextstep += progbar_quantum;
4026 /* Well, the user decided to abort the rescan. Sadly, as this
4027 isn't a reread, recovering is difficult, so we'll just
4028 close the current capture. */
4032 /* Add this packet's link-layer encapsulation type to cf->linktypes, if
4033 it's not already there.
4034 XXX - yes, this is O(N), so if every packet had a different
4035 link-layer encapsulation type, it'd be O(N^2) to read the file, but
4036 there are probably going to be a small number of encapsulation types
4038 cf_add_encapsulation_type(cf, phdr->pkt_encap);
4041 /* Free the display name */
4044 /* We're done reading the file; destroy the progress bar if it was created. */
4045 if (progbar != NULL)
4046 destroy_progress_dlg(progbar);
4048 /* We're done reading sequentially through the file. */
4049 cf->state = FILE_READ_DONE;
4051 /* Close the sequential I/O side, to free up memory it requires. */
4052 wtap_sequential_close(cf->wth);
4054 /* compute the time it took to load the file */
4055 compute_elapsed(&start_time);
4057 /* Set the file encapsulation type now; we don't know what it is until
4058 we've looked at all the packets, as we don't know until then whether
4059 there's more than one type (and thus whether it's
4060 WTAP_ENCAP_PER_PACKET). */
4061 cf->lnk_t = wtap_file_encap(cf->wth);
4063 cf_callback_invoke(cf_cb_file_rescan_finished, cf);
4066 /* Our caller will give up at this point. */
4067 return CF_READ_ABORTED;
4071 /* Put up a message box noting that the read failed somewhere along
4072 the line. Don't throw out the stuff we managed to read, though,
4076 case WTAP_ERR_UNSUPPORTED:
4077 simple_error_message_box(
4078 "The capture file contains record data that Wireshark doesn't support.\n(%s)",
4083 case WTAP_ERR_UNSUPPORTED_ENCAP:
4084 simple_error_message_box(
4085 "The capture file has a packet with a network type that Wireshark doesn't support.\n(%s)",
4090 case WTAP_ERR_CANT_READ:
4091 simple_error_message_box(
4092 "An attempt to read from the capture file failed for"
4093 " some unknown reason.");
4096 case WTAP_ERR_SHORT_READ:
4097 simple_error_message_box(
4098 "The capture file appears to have been cut short"
4099 " in the middle of a packet.");
4102 case WTAP_ERR_BAD_FILE:
4103 simple_error_message_box(
4104 "The capture file appears to be damaged or corrupt.\n(%s)",
4109 case WTAP_ERR_DECOMPRESS:
4110 simple_error_message_box(
4111 "The compressed capture file appears to be damaged or corrupt.\n"
4117 simple_error_message_box(
4118 "An error occurred while reading the"
4119 " capture file: %s.", wtap_strerror(*err));
4122 return CF_READ_ERROR;
4128 cf_save_packets(capture_file *cf, const char *fname, guint save_format,
4129 gboolean compressed, gboolean discard_comments,
4130 gboolean dont_reopen)
4132 gchar *fname_new = NULL;
4141 save_callback_args_t callback_args;
4143 gchar *display_basename;
4148 cf_callback_invoke(cf_cb_file_save_started, (gpointer)fname);
4150 if (save_format == cf->cd_t && compressed == cf->iscompressed
4151 && !discard_comments && !cf->unsaved_changes) {
4152 /* We're saving in the format it's already in, and we're
4153 not discarding comments, and there are no changes we have
4154 in memory that aren't saved to the file, so we can just move
4155 or copy the raw data. */
4157 if (cf->is_tempfile) {
4158 /* The file being saved is a temporary file from a live
4159 capture, so it doesn't need to stay around under that name;
4160 first, try renaming the capture buffer file to the new name.
4161 This acts as a "safe save", in that, if the file already
4162 exists, the existing file will be removed only if the rename
4165 Sadly, on Windows, as we have the current capture file
4166 open, even MoveFileEx() with MOVEFILE_REPLACE_EXISTING
4167 (to cause the rename to remove an existing target), as
4168 done by ws_stdio_rename() (ws_rename() is #defined to
4169 be ws_stdio_rename() on Windows) will fail.
4171 According to the MSDN documentation for CreateFile(), if,
4172 when we open a capture file, we were to directly do a CreateFile(),
4173 opening with FILE_SHARE_DELETE|FILE_SHARE_READ, and then
4174 convert it to a file descriptor with _open_osfhandle(),
4175 that would allow the file to be renamed out from under us.
4177 However, that doesn't work in practice. Perhaps the problem
4178 is that the process doing the rename is the process that
4179 has the file open. */
4181 if (ws_rename(cf->filename, fname) == 0) {
4182 /* That succeeded - there's no need to copy the source file. */
4183 how_to_save = SAVE_WITH_MOVE;
4185 if (errno == EXDEV) {
4186 /* They're on different file systems, so we have to copy the
4188 how_to_save = SAVE_WITH_COPY;
4190 /* The rename failed, but not because they're on different
4191 file systems - put up an error message. (Or should we
4192 just punt and try to copy? The only reason why I'd
4193 expect the rename to fail and the copy to succeed would
4194 be if we didn't have permission to remove the file from
4195 the temporary directory, and that might be fixable - but
4196 is it worth requiring the user to go off and fix it?) */
4197 cf_rename_failure_alert_box(fname, errno);
4202 how_to_save = SAVE_WITH_COPY;
4205 /* It's a permanent file, so we should copy it, and not remove the
4207 how_to_save = SAVE_WITH_COPY;
4210 if (how_to_save == SAVE_WITH_COPY) {
4211 /* Copy the file, if we haven't moved it. If we're overwriting
4212 an existing file, we do it with a "safe save", by writing
4213 to a new file and, if the write succeeds, renaming the
4214 new file on top of the old file. */
4215 if (file_exists(fname)) {
4216 fname_new = g_strdup_printf("%s~", fname);
4217 if (!copy_file_binary_mode(cf->filename, fname_new))
4220 if (!copy_file_binary_mode(cf->filename, fname))
4225 /* Either we're saving in a different format or we're saving changes,
4226 such as added, modified, or removed comments, that haven't yet
4227 been written to the underlying file; we can't do that by copying
4228 or moving the capture file, we have to do it by writing the packets
4231 wtapng_section_t *shb_hdr = NULL;
4232 wtapng_iface_descriptions_t *idb_inf = NULL;
4234 shb_hdr = wtap_file_get_shb_info(cf->wth);
4235 idb_inf = wtap_file_get_idb_info(cf->wth);
4237 if (file_exists(fname)) {
4238 /* We're overwriting an existing file; write out to a new file,
4239 and, if that succeeds, rename the new file on top of the
4240 old file. That makes this a "safe save", so that we don't
4241 lose the old file if we have a problem writing out the new
4242 file. (If the existing file is the current capture file,
4243 we *HAVE* to do that, otherwise we're overwriting the file
4244 from which we're reading the packets that we're writing!) */
4245 fname_new = g_strdup_printf("%s~", fname);
4246 pdh = wtap_dump_open_ng(fname_new, save_format, cf->lnk_t, cf->snap,
4247 compressed, shb_hdr, idb_inf, &err);
4249 pdh = wtap_dump_open_ng(fname, save_format, cf->lnk_t, cf->snap,
4250 compressed, shb_hdr, idb_inf, &err);
4256 cf_open_failure_alert_box(fname, err, NULL, TRUE, save_format);
4260 /* Add address resolution */
4261 wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list());
4263 /* Iterate through the list of packets, processing all the packets. */
4264 callback_args.pdh = pdh;
4265 callback_args.fname = fname;
4266 callback_args.file_type = save_format;
4267 switch (process_specified_packets(cf, NULL, "Saving", "packets",
4268 TRUE, save_packet, &callback_args)) {
4271 /* Completed successfully. */
4275 /* The user decided to abort the saving.
4276 If we're writing to a temporary file, remove it.
4277 XXX - should we do so even if we're not writing to a
4279 wtap_dump_close(pdh, &err);
4280 if (fname_new != NULL)
4281 ws_unlink(fname_new);
4282 cf_callback_invoke(cf_cb_file_save_stopped, NULL);
4283 return CF_WRITE_ABORTED;
4286 /* Error while saving.
4287 If we're writing to a temporary file, remove it. */
4288 if (fname_new != NULL)
4289 ws_unlink(fname_new);
4290 wtap_dump_close(pdh, &err);
4294 if (!wtap_dump_close(pdh, &err)) {
4295 cf_close_failure_alert_box(fname, err);
4299 how_to_save = SAVE_WITH_WTAP;
4302 if (fname_new != NULL) {
4303 /* We wrote out to fname_new, and should rename it on top of
4304 fname. fname_new is now closed, so that should be possible even
4305 on Windows. However, on Windows, we first need to close whatever
4306 file descriptors we have open for fname. */
4308 wtap_fdclose(cf->wth);
4310 /* Now do the rename. */
4311 if (ws_rename(fname_new, fname) == -1) {
4312 /* Well, the rename failed. */
4313 cf_rename_failure_alert_box(fname, errno);
4315 /* Attempt to reopen the random file descriptor using the
4316 current file's filename. (At this point, the sequential
4317 file descriptor is closed.) */
4318 if (!wtap_fdreopen(cf->wth, cf->filename, &err)) {
4319 /* Oh, well, we're screwed. */
4320 display_basename = g_filename_display_basename(cf->filename);
4321 simple_error_message_box(
4322 file_open_error_message(err, FALSE), display_basename);
4323 g_free(display_basename);
4330 cf_callback_invoke(cf_cb_file_save_finished, NULL);
4331 cf->unsaved_changes = FALSE;
4334 switch (how_to_save) {
4336 case SAVE_WITH_MOVE:
4337 /* We just moved the file, so the wtap structure refers to the
4338 new file, and all the information other than the filename
4339 and the "is temporary" status applies to the new file; just
4341 g_free(cf->filename);
4342 cf->filename = g_strdup(fname);
4343 cf->is_tempfile = FALSE;
4344 cf_callback_invoke(cf_cb_file_fast_save_finished, cf);
4347 case SAVE_WITH_COPY:
4348 /* We just copied the file, s all the information other than
4349 the wtap structure, the filename, and the "is temporary"
4350 status applies to the new file; just update that. */
4351 wtap_close(cf->wth);
4352 cf->wth = wtap_open_offline(fname, &err, &err_info, TRUE);
4353 if (cf->wth == NULL) {
4354 cf_open_failure_alert_box(fname, err, err_info, FALSE, 0);
4357 g_free(cf->filename);
4358 cf->filename = g_strdup(fname);
4359 cf->is_tempfile = FALSE;
4361 cf_callback_invoke(cf_cb_file_fast_save_finished, cf);
4364 case SAVE_WITH_WTAP:
4365 /* Open and read the file we saved to.
4367 XXX - this is somewhat of a waste; we already have the
4368 packets, all this gets us is updated file type information
4369 (which we could just stuff into "cf"), and having the new
4370 file be the one we have opened and from which we're reading
4371 the data, and it means we have to spend time opening and
4372 reading the file, which could be a significant amount of
4373 time if the file is large.
4375 If the capture-file-writing code were to return the
4376 seek offset of each packet it writes, we could save that
4377 in the frame_data structure for the frame, and just open
4378 the file without reading it again...
4380 ...as long as, for gzipped files, the process of writing
4381 out the file *also* generates the information needed to
4382 support fast random access to the compressed file. */
4383 if (rescan_file(cf, fname, FALSE, &err) != CF_READ_OK) {
4384 /* The rescan failed; just close the file. Either
4385 a dialog was popped up for the failure, so the
4386 user knows what happened, or they stopped the
4387 rescan, in which case they know what happened. */
4393 /* If we were told to discard the comments, do so. */
4394 if (discard_comments) {
4395 /* Remove SHB comment, if any. */
4396 wtap_write_shb_comment(cf->wth, NULL);
4398 /* Remove packet comments. */
4399 for (framenum = 1; framenum <= cf->count; framenum++) {
4400 fdata = frame_data_sequence_find(cf->frames, framenum);
4401 if (fdata->opt_comment) {
4402 g_free(fdata->opt_comment);
4403 fdata->opt_comment = NULL;
4404 cf->packet_comment_count--;
4412 if (fname_new != NULL) {
4413 /* We were trying to write to a temporary file; get rid of it if it
4414 exists. (We don't care whether this fails, as, if it fails,
4415 there's not much we can do about it. I guess if it failed for
4416 a reason other than "it doesn't exist", we could report an
4417 error, so the user knows there's a junk file that they might
4418 want to clean up.) */
4419 ws_unlink(fname_new);
4422 cf_callback_invoke(cf_cb_file_save_failed, NULL);
4423 return CF_WRITE_ERROR;
4427 cf_export_specified_packets(capture_file *cf, const char *fname,
4428 packet_range_t *range, guint save_format,
4429 gboolean compressed)
4431 gchar *fname_new = NULL;
4434 save_callback_args_t callback_args;
4435 wtapng_section_t *shb_hdr = NULL;
4436 wtapng_iface_descriptions_t *idb_inf = NULL;
4438 cf_callback_invoke(cf_cb_file_export_specified_packets_started, (gpointer)fname);
4440 packet_range_process_init(range);
4442 /* We're writing out specified packets from the specified capture
4443 file to another file. Even if all captured packets are to be
4444 written, don't special-case the operation - read each packet
4445 and then write it out if it's one of the specified ones. */
4447 shb_hdr = wtap_file_get_shb_info(cf->wth);
4448 idb_inf = wtap_file_get_idb_info(cf->wth);
4450 if (file_exists(fname)) {
4451 /* We're overwriting an existing file; write out to a new file,
4452 and, if that succeeds, rename the new file on top of the
4453 old file. That makes this a "safe save", so that we don't
4454 lose the old file if we have a problem writing out the new
4455 file. (If the existing file is the current capture file,
4456 we *HAVE* to do that, otherwise we're overwriting the file
4457 from which we're reading the packets that we're writing!) */
4458 fname_new = g_strdup_printf("%s~", fname);
4459 pdh = wtap_dump_open_ng(fname_new, save_format, cf->lnk_t, cf->snap,
4460 compressed, shb_hdr, idb_inf, &err);
4462 pdh = wtap_dump_open_ng(fname, save_format, cf->lnk_t, cf->snap,
4463 compressed, shb_hdr, idb_inf, &err);
4469 cf_open_failure_alert_box(fname, err, NULL, TRUE, save_format);
4473 /* Add address resolution */
4474 wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list());
4476 /* Iterate through the list of packets, processing the packets we were
4479 XXX - we've already called "packet_range_process_init(range)", but
4480 "process_specified_packets()" will do it again. Fortunately,
4481 that's harmless in this case, as we haven't done anything to
4482 "range" since we initialized it. */
4483 callback_args.pdh = pdh;
4484 callback_args.fname = fname;
4485 callback_args.file_type = save_format;
4486 switch (process_specified_packets(cf, range, "Writing", "specified packets",
4487 TRUE, save_packet, &callback_args)) {
4490 /* Completed successfully. */
4494 /* The user decided to abort the saving.
4495 If we're writing to a temporary file, remove it.
4496 XXX - should we do so even if we're not writing to a
4498 wtap_dump_close(pdh, &err);
4499 if (fname_new != NULL)
4500 ws_unlink(fname_new);
4501 cf_callback_invoke(cf_cb_file_export_specified_packets_stopped, NULL);
4502 return CF_WRITE_ABORTED;
4506 /* Error while saving.
4507 If we're writing to a temporary file, remove it. */
4508 if (fname_new != NULL)
4509 ws_unlink(fname_new);
4510 wtap_dump_close(pdh, &err);
4514 if (!wtap_dump_close(pdh, &err)) {
4515 cf_close_failure_alert_box(fname, err);
4519 if (fname_new != NULL) {
4520 /* We wrote out to fname_new, and should rename it on top of
4521 fname; fname is now closed, so that should be possible even
4522 on Windows. Do the rename. */
4523 if (ws_rename(fname_new, fname) == -1) {
4524 /* Well, the rename failed. */
4525 cf_rename_failure_alert_box(fname, errno);
4530 cf_callback_invoke(cf_cb_file_export_specified_packets_finished, NULL);
4534 if (fname_new != NULL) {
4535 /* We were trying to write to a temporary file; get rid of it if it
4536 exists. (We don't care whether this fails, as, if it fails,
4537 there's not much we can do about it. I guess if it failed for
4538 a reason other than "it doesn't exist", we could report an
4539 error, so the user knows there's a junk file that they might
4540 want to clean up.) */
4541 ws_unlink(fname_new);
4544 cf_callback_invoke(cf_cb_file_export_specified_packets_failed, NULL);
4545 return CF_WRITE_ERROR;
4549 cf_open_failure_alert_box(const char *filename, int err, gchar *err_info,
4550 gboolean for_writing, int file_type)
4552 gchar *display_basename;
4555 /* Wiretap error. */
4556 display_basename = g_filename_display_basename(filename);
4559 case WTAP_ERR_NOT_REGULAR_FILE:
4560 simple_error_message_box(
4561 "The file \"%s\" is a \"special file\" or socket or other non-regular file.",
4565 case WTAP_ERR_RANDOM_OPEN_PIPE:
4566 /* Seen only when opening a capture file for reading. */
4567 simple_error_message_box(
4568 "The file \"%s\" is a pipe or FIFO; Wireshark can't read pipe or FIFO files.\n"
4569 "To capture from a pipe or FIFO use wireshark -i -",
4573 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
4574 /* Seen only when opening a capture file for reading. */
4575 simple_error_message_box(
4576 "The file \"%s\" isn't a capture file in a format Wireshark understands.",
4580 case WTAP_ERR_UNSUPPORTED:
4581 /* Seen only when opening a capture file for reading. */
4582 simple_error_message_box(
4583 "The file \"%s\" isn't a capture file in a format Wireshark understands.\n"
4585 display_basename, err_info);
4589 case WTAP_ERR_CANT_WRITE_TO_PIPE:
4590 /* Seen only when opening a capture file for writing. */
4591 simple_error_message_box(
4592 "The file \"%s\" is a pipe, and %s capture files can't be "
4593 "written to a pipe.",
4594 display_basename, wtap_file_type_string(file_type));
4597 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
4598 /* Seen only when opening a capture file for writing. */
4599 simple_error_message_box(
4600 "Wireshark doesn't support writing capture files in that format.");
4603 case WTAP_ERR_UNSUPPORTED_ENCAP:
4605 simple_error_message_box("Wireshark can't save this capture in that format.");
4607 simple_error_message_box(
4608 "The file \"%s\" is a capture for a network type that Wireshark doesn't support.\n"
4610 display_basename, err_info);
4615 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
4617 simple_error_message_box(
4618 "Wireshark can't save this capture in that format.");
4620 simple_error_message_box(
4621 "The file \"%s\" is a capture for a network type that Wireshark doesn't support.",
4626 case WTAP_ERR_BAD_FILE:
4627 /* Seen only when opening a capture file for reading. */
4628 simple_error_message_box(
4629 "The file \"%s\" appears to be damaged or corrupt.\n"
4631 display_basename, err_info);
4635 case WTAP_ERR_CANT_OPEN:
4637 simple_error_message_box(
4638 "The file \"%s\" could not be created for some unknown reason.",
4641 simple_error_message_box(
4642 "The file \"%s\" could not be opened for some unknown reason.",
4647 case WTAP_ERR_SHORT_READ:
4648 simple_error_message_box(
4649 "The file \"%s\" appears to have been cut short"
4650 " in the middle of a packet or other data.",
4654 case WTAP_ERR_SHORT_WRITE:
4655 simple_error_message_box(
4656 "A full header couldn't be written to the file \"%s\".",
4660 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
4661 simple_error_message_box(
4662 "This file type cannot be written as a compressed file.");
4665 case WTAP_ERR_DECOMPRESS:
4666 simple_error_message_box(
4667 "The compressed file \"%s\" appears to be damaged or corrupt.\n"
4668 "(%s)", display_basename, err_info);
4673 simple_error_message_box(
4674 "The file \"%s\" could not be %s: %s.",
4676 for_writing ? "created" : "opened",
4677 wtap_strerror(err));
4680 g_free(display_basename);
4683 open_failure_alert_box(filename, err, for_writing);
4688 * XXX - whether we mention the source pathname, the target pathname,
4689 * or both depends on the error and on what we find if we look for
4690 * one or both of them.
4693 cf_rename_failure_alert_box(const char *filename, int err)
4695 gchar *display_basename;
4697 display_basename = g_filename_display_basename(filename);
4701 /* XXX - should check whether the source exists and, if not,
4702 report it as the problem and, if so, report the destination
4704 simple_error_message_box("The path to the file \"%s\" doesn't exist.",
4709 /* XXX - if we're doing a rename after a safe save, we should
4710 probably say something else. */
4711 simple_error_message_box("You don't have permission to move the capture file to \"%s\".",
4716 /* XXX - this should probably mention both the source and destination
4718 simple_error_message_box("The file \"%s\" could not be moved: %s.",
4719 display_basename, wtap_strerror(err));
4722 g_free(display_basename);
4725 /* Check for write errors - if the file is being written to an NFS server,
4726 a write error may not show up until the file is closed, as NFS clients
4727 might not send writes to the server until the "write()" call finishes,
4728 so that the write may fail on the server but the "write()" may succeed. */
4730 cf_close_failure_alert_box(const char *filename, int err)
4732 gchar *display_basename;
4735 /* Wiretap error. */
4736 display_basename = g_filename_display_basename(filename);
4739 case WTAP_ERR_CANT_CLOSE:
4740 simple_error_message_box(
4741 "The file \"%s\" couldn't be closed for some unknown reason.",
4745 case WTAP_ERR_SHORT_WRITE:
4746 simple_error_message_box(
4747 "Not all the packets could be written to the file \"%s\".",
4752 simple_error_message_box(
4753 "An error occurred while closing the file \"%s\": %s.",
4754 display_basename, wtap_strerror(err));
4757 g_free(display_basename);
4760 We assume that a close error from the OS is really a write error. */
4761 write_failure_alert_box(filename, err);
4765 /* Reload the current capture file. */
4767 cf_reload(capture_file *cf) {
4769 gboolean is_tempfile;
4772 /* If the file could be opened, "cf_open()" calls "cf_close()"
4773 to get rid of state for the old capture file before filling in state
4774 for the new capture file. "cf_close()" will remove the file if
4775 it's a temporary file; we don't want that to happen (for one thing,
4776 it'd prevent subsequent reopens from working). Remember whether it's
4777 a temporary file, mark it as not being a temporary file, and then
4778 reopen it as the type of file it was.
4780 Also, "cf_close()" will free "cf->filename", so we must make
4781 a copy of it first. */
4782 filename = g_strdup(cf->filename);
4783 is_tempfile = cf->is_tempfile;
4784 cf->is_tempfile = FALSE;
4785 if (cf_open(cf, filename, is_tempfile, &err) == CF_OK) {
4786 switch (cf_read(cf, TRUE)) {
4790 /* Just because we got an error, that doesn't mean we were unable
4791 to read any of the file; we handle what we could get from the
4795 case CF_READ_ABORTED:
4796 /* The user bailed out of re-reading the capture file; the
4797 capture file has been closed - just free the capture file name
4798 string and return (without changing the last containing
4804 /* The open failed, so "cf->is_tempfile" wasn't set to "is_tempfile".
4805 Instead, the file was left open, so we should restore "cf->is_tempfile"
4808 XXX - change the menu? Presumably "cf_open()" will do that;
4809 make sure it does! */
4810 cf->is_tempfile = is_tempfile;
4812 /* "cf_open()" made a copy of the file name we handed it, so
4813 we should free up our copy. */
4823 * indent-tabs-mode: nil
4826 * ex: set shiftwidth=2 tabstop=8 expandtab:
4827 * :indentSize=2:tabSize=8:noTabs=true: