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 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 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 packet_list_freeze();
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 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 */
645 if (dfcode != NULL) {
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);
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 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 packet_list_check_end();
791 /* Don't freeze/thaw the list when doing live capture */
792 /*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 */
835 if (dfcode != NULL) {
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 /*packet_list_thaw();*/
844 /* With the new packet list the first packet
845 * isn't automatically selected.
847 if (!cf->current_frame)
848 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 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 packet_list_check_end();
907 /* Don't freeze/thaw the list when doing live capture */
908 /*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 */
921 if (dfcode != NULL) {
922 dfilter_free(dfcode);
925 /* Don't freeze/thaw the list when doing live capture */
926 /*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 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 = 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;
1261 int selected_frame_type;
1262 gboolean fake_interface_ids = FALSE;
1264 /* open the input files */
1265 if (!merge_open_in_files(in_file_count, in_filenames, &in_files,
1266 &open_err, &err_info, &err_fileno)) {
1268 cf_open_failure_alert_box(in_filenames[err_fileno], open_err, err_info,
1273 if (*out_filenamep != NULL) {
1274 out_filename = *out_filenamep;
1275 out_fd = ws_open(out_filename, O_CREAT|O_TRUNC|O_BINARY, 0600);
1279 out_fd = create_tempfile(&tmpname, "wireshark");
1282 out_filename = g_strdup(tmpname);
1283 *out_filenamep = out_filename;
1287 merge_close_in_files(in_file_count, in_files);
1289 cf_open_failure_alert_box(out_filename, open_err, NULL, TRUE, file_type);
1293 selected_frame_type = merge_select_frame_type(in_file_count, in_files);
1295 /* If we are trying to merge a number of libpcap files with different encapsulation types
1296 * change the output file type to pcapng and create SHB and IDB:s for the new file use the
1297 * interface index stored in in_files per file to change the phdr before writing the datablock.
1298 * XXX should it be an option to convert to pcapng?
1300 * We need something similar when merging pcapng files possibly with an option to say
1301 * the same interface(s) used in all in files. SHBs comments should be merged together.
1303 if ((selected_frame_type == WTAP_ENCAP_PER_PACKET)&&(file_type == WTAP_FILE_PCAP)) {
1304 /* Write output in pcapng format */
1305 wtapng_section_t *shb_hdr;
1306 wtapng_iface_descriptions_t *idb_inf, *idb_inf_merge_file;
1307 wtapng_if_descr_t int_data, *file_int_data;
1308 GString *comment_gstr;
1311 fake_interface_ids = TRUE;
1312 /* Create SHB info */
1313 shb_hdr = wtap_file_get_shb_info(in_files[0].wth);
1314 comment_gstr = g_string_new("");
1315 g_string_append_printf(comment_gstr, "%s \n",shb_hdr->opt_comment);
1316 g_string_append_printf(comment_gstr, "File created by merging: \n");
1317 file_type = WTAP_FILE_PCAPNG;
1319 for (i = 0; i < in_file_count; i++) {
1320 g_string_append_printf(comment_gstr, "File%d: %s \n",i+1,in_files[i].filename);
1322 shb_hdr->section_length = -1;
1324 shb_hdr->opt_comment = g_string_free(comment_gstr, FALSE); /* NULL if not available */
1325 shb_hdr->shb_hardware = NULL; /* NULL if not available, UTF-8 string containing the */
1326 /* description of the hardware used to create this section. */
1327 shb_hdr->shb_os = NULL; /* NULL if not available, UTF-8 string containing the name */
1328 /* of the operating system used to create this section. */
1329 shb_hdr->shb_user_appl = "Wireshark"; /* NULL if not available, UTF-8 string containing the name */
1330 /* of the application used to create this section. */
1332 /* create fake IDB info */
1333 idb_inf = g_new(wtapng_iface_descriptions_t,1);
1334 idb_inf->number_of_interfaces = in_file_count; /* TODO make this the number of DIFFERENT encapsulation types
1335 * check that snaplength is the same too?
1337 idb_inf->interface_data = g_array_new(FALSE, FALSE, sizeof(wtapng_if_descr_t));
1339 for (i = 0; i < in_file_count; i++) {
1340 idb_inf_merge_file = wtap_file_get_idb_info(in_files[i].wth);
1341 /* read the interface data from the in file to our combined interfca data */
1342 file_int_data = &g_array_index (idb_inf_merge_file->interface_data, wtapng_if_descr_t, 0);
1343 int_data.wtap_encap = file_int_data->wtap_encap;
1344 int_data.time_units_per_second = file_int_data->time_units_per_second;
1345 int_data.link_type = file_int_data->link_type;
1346 int_data.snap_len = file_int_data->snap_len;
1347 int_data.if_name = g_strdup(file_int_data->if_name);
1348 int_data.opt_comment = NULL;
1349 int_data.if_description = NULL;
1350 int_data.if_speed = 0;
1351 int_data.if_tsresol = 6;
1352 int_data.if_filter_str = NULL;
1353 int_data.bpf_filter_len = 0;
1354 int_data.if_filter_bpf_bytes = NULL;
1355 int_data.if_os = NULL;
1356 int_data.if_fcslen = -1;
1357 int_data.num_stat_entries = 0; /* Number of ISB:s */
1358 int_data.interface_statistics = NULL;
1360 g_array_append_val(idb_inf->interface_data, int_data);
1361 g_free(idb_inf_merge_file);
1363 /* Set fake interface Id in per file data */
1364 in_files[i].interface_id = i;
1367 pdh = wtap_dump_fdopen_ng(out_fd, file_type,
1368 selected_frame_type,
1369 merge_max_snapshot_length(in_file_count, in_files),
1370 FALSE /* compressed */, shb_hdr, idb_inf /* wtapng_iface_descriptions_t *idb_inf */, &open_err);
1374 merge_close_in_files(in_file_count, in_files);
1376 cf_open_failure_alert_box(out_filename, open_err, err_info, TRUE,
1383 pdh = wtap_dump_fdopen(out_fd, file_type,
1384 selected_frame_type,
1385 merge_max_snapshot_length(in_file_count, in_files),
1386 FALSE /* compressed */, &open_err);
1389 merge_close_in_files(in_file_count, in_files);
1391 cf_open_failure_alert_box(out_filename, open_err, err_info, TRUE,
1397 /* Get the sum of the sizes of all the files. */
1399 for (i = 0; i < in_file_count; i++)
1400 f_len += in_files[i].size;
1402 /* Update the progress bar when it gets to this value. */
1403 progbar_nextstep = 0;
1404 /* When we reach the value that triggers a progress bar update,
1405 bump that value by this amount. */
1406 progbar_quantum = f_len/N_PROGBAR_UPDATES;
1407 /* Progress so far. */
1411 g_get_current_time(&start_time);
1413 /* do the merge (or append) */
1416 in_file = merge_append_read_packet(in_file_count, in_files, &read_err,
1419 in_file = merge_read_packet(in_file_count, in_files, &read_err,
1421 if (in_file == NULL) {
1426 if (read_err != 0) {
1427 /* I/O error reading from in_file */
1428 got_read_error = TRUE;
1432 /* Get the sum of the data offsets in all of the files. */
1434 for (i = 0; i < in_file_count; i++)
1435 data_offset += in_files[i].data_offset;
1437 /* Create the progress bar if necessary.
1438 We check on every iteration of the loop, so that it takes no
1439 longer than the standard time to create it (otherwise, for a
1440 large file, we might take considerably longer than that standard
1441 time in order to get to the next progress bar step). */
1442 if (progbar == NULL) {
1443 progbar = delayed_create_progress_dlg(NULL, "Merging", "files",
1444 FALSE, &stop_flag, &start_time, progbar_val);
1447 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
1448 when we update it, we have to run the GTK+ main loop to get it
1449 to repaint what's pending, and doing so may involve an "ioctl()"
1450 to see if there's any pending input from an X server, and doing
1451 that for every packet can be costly, especially on a big file. */
1452 if (data_offset >= progbar_nextstep) {
1453 /* Get the sum of the seek positions in all of the files. */
1455 for (i = 0; i < in_file_count; i++)
1456 file_pos += wtap_read_so_far(in_files[i].wth);
1457 progbar_val = (gfloat) file_pos / (gfloat) f_len;
1458 if (progbar_val > 1.0f) {
1459 /* Some file probably grew while we were reading it.
1460 That "shouldn't happen", so we'll just clip the progress
1464 if (progbar != NULL) {
1465 g_snprintf(status_str, sizeof(status_str),
1466 "%" G_GINT64_MODIFIER "dKB of %" G_GINT64_MODIFIER "dKB",
1467 file_pos / 1024, f_len / 1024);
1468 update_progress_dlg(progbar, progbar_val, status_str);
1470 progbar_nextstep += progbar_quantum;
1474 /* Well, the user decided to abort the merge. */
1478 /* If we have WTAP_ENCAP_PER_PACKETend the infiles are of type WTAP_FILE_PCAP
1479 * we need to set the interface id in the paket header = the interface index we used
1480 * in the IDBs interface description for this file(encapsulation type).
1482 if (fake_interface_ids) {
1483 struct wtap_pkthdr *phdr;
1485 phdr = wtap_phdr(in_file->wth);
1486 phdr->interface_id = in_file->interface_id;
1487 phdr->presence_flags = phdr->presence_flags | WTAP_HAS_INTERFACE_ID;
1489 if (!wtap_dump(pdh, wtap_phdr(in_file->wth), wtap_pseudoheader(in_file->wth),
1490 wtap_buf_ptr(in_file->wth), &write_err)) {
1491 got_write_error = TRUE;
1496 /* We're done merging the files; destroy the progress bar if it was created. */
1497 if (progbar != NULL)
1498 destroy_progress_dlg(progbar);
1500 merge_close_in_files(in_file_count, in_files);
1501 if (!got_read_error && !got_write_error) {
1502 if (!wtap_dump_close(pdh, &write_err))
1503 got_write_error = TRUE;
1505 wtap_dump_close(pdh, &close_err);
1507 if (got_read_error) {
1509 * Find the file on which we got the error, and report the error.
1511 for (i = 0; i < in_file_count; i++) {
1512 if (in_files[i].state == GOT_ERROR) {
1513 /* Put up a message box noting that a read failed somewhere along
1515 display_basename = g_filename_display_basename(in_files[i].filename);
1518 case WTAP_ERR_UNSUPPORTED_ENCAP:
1519 simple_error_message_box(
1520 "The capture file %s has a packet with a network type that Wireshark doesn't support.\n(%s)",
1521 display_basename, err_info);
1525 case WTAP_ERR_CANT_READ:
1526 simple_error_message_box(
1527 "An attempt to read from the capture file %s failed for"
1528 " some unknown reason.", display_basename);
1531 case WTAP_ERR_SHORT_READ:
1532 simple_error_message_box(
1533 "The capture file %s appears to have been cut short"
1534 " in the middle of a packet.", display_basename);
1537 case WTAP_ERR_BAD_FILE:
1538 simple_error_message_box(
1539 "The capture file %s appears to be damaged or corrupt.\n(%s)",
1540 display_basename, err_info);
1544 case WTAP_ERR_DECOMPRESS:
1545 simple_error_message_box(
1546 "The compressed capture file %s appears to be damaged or corrupt.\n"
1547 "(%s)", display_basename, err_info);
1552 simple_error_message_box(
1553 "An error occurred while reading the"
1554 " capture file %s: %s.",
1555 display_basename, wtap_strerror(read_err));
1558 g_free(display_basename);
1563 if (got_write_error) {
1564 /* Put up an alert box for the write error. */
1565 if (write_err < 0) {
1566 /* Wiretap error. */
1567 switch (write_err) {
1569 case WTAP_ERR_UNSUPPORTED_ENCAP:
1571 * This is a problem with the particular frame we're writing;
1572 * note that, and give the frame number.
1574 display_basename = g_filename_display_basename(in_file->filename);
1575 simple_error_message_box(
1576 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.",
1577 in_file->packet_num, display_basename,
1578 wtap_file_type_string(file_type));
1579 g_free(display_basename);
1583 display_basename = g_filename_display_basename(out_filename);
1584 simple_error_message_box(
1585 "An error occurred while writing to the file \"%s\": %s.",
1586 out_filename, wtap_strerror(write_err));
1587 g_free(display_basename);
1592 write_failure_alert_box(out_filename, write_err);
1596 if (got_read_error || got_write_error || stop_flag) {
1597 /* Callers aren't expected to treat an error or an explicit abort
1598 differently - we put up error dialogs ourselves, so they don't
1606 cf_filter_packets(capture_file *cf, gchar *dftext, gboolean force)
1608 const char *filter_new = dftext ? dftext : "";
1609 const char *filter_old = cf->dfilter ? cf->dfilter : "";
1611 GTimeVal start_time;
1613 /* if new filter equals old one, do nothing unless told to do so */
1614 if (!force && strcmp(filter_new, filter_old) == 0) {
1620 if (dftext == NULL) {
1621 /* The new filter is an empty filter (i.e., display all packets).
1622 * so leave dfcode==NULL
1626 * We have a filter; make a copy of it (as we'll be saving it),
1627 * and try to compile it.
1629 dftext = g_strdup(dftext);
1630 if (!dfilter_compile(dftext, &dfcode)) {
1631 /* The attempt failed; report an error. */
1632 simple_message_box(ESD_TYPE_ERROR, NULL,
1633 "See the help for a description of the display filter syntax.",
1634 "\"%s\" isn't a valid display filter: %s",
1635 dftext, dfilter_error_msg);
1641 if (dfcode == NULL) {
1642 /* Yes - free the filter text, and set it to null. */
1648 /* We have a valid filter. Replace the current filter. */
1649 g_free(cf->dfilter);
1650 cf->dfilter = dftext;
1651 g_get_current_time(&start_time);
1654 /* Now rescan the packet list, applying the new filter, but not
1655 throwing away information constructed on a previous pass. */
1656 if (dftext == NULL) {
1657 rescan_packets(cf, "Resetting", "Filter", TRUE, FALSE);
1659 rescan_packets(cf, "Filtering", dftext, TRUE, FALSE);
1662 /* Cleanup and release all dfilter resources */
1663 dfilter_free(dfcode);
1669 cf_reftime_packets(capture_file *cf)
1671 ref_time_packets(cf);
1675 cf_redissect_packets(capture_file *cf)
1677 rescan_packets(cf, "Reprocessing", "all packets", TRUE, TRUE);
1681 cf_read_frame_r(capture_file *cf, frame_data *fdata,
1682 union wtap_pseudo_header *pseudo_header, guint8 *pd)
1686 gchar *display_basename;
1688 #ifdef WANT_PACKET_EDITOR
1689 /* if fdata->file_off == -1 it means packet was edited, and we must find data inside edited_frames tree */
1690 if (G_UNLIKELY(fdata->file_off == -1)) {
1691 const modified_frame_data *frame = (const modified_frame_data *) g_tree_lookup(cf->edited_frames, GINT_TO_POINTER(fdata->num));
1694 simple_error_message_box("fdata->file_off == -1, but can't find modified frame!");
1698 *pseudo_header = frame->ph;
1699 memcpy(pd, frame->pd, fdata->cap_len);
1704 if (!wtap_seek_read(cf->wth, fdata->file_off, pseudo_header, pd,
1705 fdata->cap_len, &err, &err_info)) {
1706 display_basename = g_filename_display_basename(cf->filename);
1709 case WTAP_ERR_UNSUPPORTED_ENCAP:
1710 simple_error_message_box("The file \"%s\" has a packet with a network type that Wireshark doesn't support.\n(%s)",
1711 display_basename, err_info);
1715 case WTAP_ERR_BAD_FILE:
1716 simple_error_message_box("An error occurred while reading from the file \"%s\": %s.\n(%s)",
1717 display_basename, wtap_strerror(err), err_info);
1722 simple_error_message_box(
1723 "An error occurred while reading from the file \"%s\": %s.",
1724 display_basename, wtap_strerror(err));
1727 g_free(display_basename);
1734 cf_read_frame(capture_file *cf, frame_data *fdata)
1736 return cf_read_frame_r(cf, fdata, &cf->pseudo_header, cf->pd);
1739 /* Rescan the list of packets, reconstructing the CList.
1741 "action" describes why we're doing this; it's used in the progress
1744 "action_item" describes what we're doing; it's used in the progress
1747 "refilter" is TRUE if we need to re-evaluate the filter expression.
1749 "redissect" is TRUE if we need to make the dissectors reconstruct
1750 any state information they have (because a preference that affects
1751 some dissector has changed, meaning some dissector might construct
1752 its state differently from the way it was constructed the last time). */
1754 rescan_packets(capture_file *cf, const char *action, const char *action_item,
1755 gboolean refilter, gboolean redissect)
1757 /* Rescan packets new packet list */
1760 progdlg_t *progbar = NULL;
1763 frame_data *selected_frame, *preceding_frame, *following_frame, *prev_frame;
1764 int selected_frame_num, preceding_frame_num, following_frame_num, prev_frame_num;
1765 gboolean selected_frame_seen;
1767 GTimeVal start_time;
1768 gchar status_str[100];
1769 int progbar_nextstep;
1770 int progbar_quantum;
1772 gboolean filtering_tap_listeners;
1774 gboolean add_to_packet_list = FALSE;
1777 /* Compile the current display filter.
1778 * We assume this will not fail since cf->dfilter is only set in
1779 * cf_filter IFF the filter was valid.
1781 compiled = dfilter_compile(cf->dfilter, &dfcode);
1782 g_assert(!cf->dfilter || (compiled && dfcode));
1784 /* Do we have any tap listeners with filters? */
1785 filtering_tap_listeners = have_filtering_tap_listeners();
1787 /* Get the union of the flags for all tap listeners. */
1788 tap_flags = union_of_tap_listener_flags();
1790 reset_tap_listeners();
1791 /* Which frame, if any, is the currently selected frame?
1792 XXX - should the selected frame or the focus frame be the "current"
1793 frame, that frame being the one from which "Find Frame" searches
1795 selected_frame = cf->current_frame;
1797 /* Mark frame num as not found */
1798 selected_frame_num = -1;
1800 /* Freeze the packet list while we redo it, so we don't get any
1801 screen updates while it happens. */
1802 packet_list_freeze();
1805 /* We need to re-initialize all the state information that protocols
1806 keep, because some preference that controls a dissector has changed,
1807 which might cause the state information to be constructed differently
1808 by that dissector. */
1810 /* We might receive new packets while redissecting, and we don't
1811 want to dissect those before their time. */
1812 cf->redissecting = TRUE;
1814 /* Cleanup all data structures used for dissection. */
1815 cleanup_dissection();
1816 /* Initialize all data structures used for dissection. */
1819 /* We need to redissect the packets so we have to discard our old
1820 * packet list store. */
1821 packet_list_clear();
1822 add_to_packet_list = TRUE;
1825 /* We don't yet know which will be the first and last frames displayed. */
1826 cf->first_displayed = 0;
1827 cf->last_displayed = 0;
1829 /* We currently don't display any packets */
1830 cf->displayed_count = 0;
1832 /* Iterate through the list of frames. Call a routine for each frame
1833 to check whether it should be displayed and, if so, add it to
1834 the display list. */
1835 nstime_set_unset(&first_ts);
1836 nstime_set_unset(&prev_dis_ts);
1837 nstime_set_unset(&prev_cap_ts);
1840 /* Update the progress bar when it gets to this value. */
1841 progbar_nextstep = 0;
1842 /* When we reach the value that triggers a progress bar update,
1843 bump that value by this amount. */
1844 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
1845 /* Count of packets at which we've looked. */
1847 /* Progress so far. */
1851 g_get_current_time(&start_time);
1853 /* no previous row yet */
1854 prev_frame_num = -1;
1857 preceding_frame_num = -1;
1858 preceding_frame = NULL;
1859 following_frame_num = -1;
1860 following_frame = NULL;
1862 selected_frame_seen = FALSE;
1864 for (framenum = 1; framenum <= cf->count; framenum++) {
1865 fdata = frame_data_sequence_find(cf->frames, framenum);
1867 /* Create the progress bar if necessary.
1868 We check on every iteration of the loop, so that it takes no
1869 longer than the standard time to create it (otherwise, for a
1870 large file, we might take considerably longer than that standard
1871 time in order to get to the next progress bar step). */
1872 if (progbar == NULL)
1873 progbar = delayed_create_progress_dlg(cf->window, action, action_item, TRUE,
1874 &stop_flag, &start_time,
1877 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
1878 when we update it, we have to run the GTK+ main loop to get it
1879 to repaint what's pending, and doing so may involve an "ioctl()"
1880 to see if there's any pending input from an X server, and doing
1881 that for every packet can be costly, especially on a big file. */
1882 if (count >= progbar_nextstep) {
1883 /* let's not divide by zero. I should never be started
1884 * with count == 0, so let's assert that
1886 g_assert(cf->count > 0);
1887 progbar_val = (gfloat) count / cf->count;
1889 if (progbar != NULL) {
1890 g_snprintf(status_str, sizeof(status_str),
1891 "%4u of %u frames", count, cf->count);
1892 update_progress_dlg(progbar, progbar_val, status_str);
1895 progbar_nextstep += progbar_quantum;
1899 /* Well, the user decided to abort the filtering. Just stop.
1901 XXX - go back to the previous filter? Users probably just
1902 want not to wait for a filtering operation to finish;
1903 unless we cancel by having no filter, reverting to the
1904 previous filter will probably be even more expensive than
1905 continuing the filtering, as it involves going back to the
1906 beginning and filtering, and even with no filter we currently
1907 have to re-generate the entire clist, which is also expensive.
1909 I'm not sure what Network Monitor does, but it doesn't appear
1910 to give you an unfiltered display if you cancel. */
1917 /* Since all state for the frame was destroyed, mark the frame
1918 * as not visited, free the GSList referring to the state
1919 * data (the per-frame data itself was freed by
1920 * "init_dissection()"), and null out the GSList pointer. */
1921 fdata->flags.visited = 0;
1922 frame_data_cleanup(fdata);
1925 if (redissect || refilter) {
1926 /* If we're redissecting or refiltering then any frame dependencies
1927 * from the previous dissection/filtering are no longer valid.
1929 fdata->flags.dependent_of_displayed = 0;
1932 if (!cf_read_frame(cf, fdata))
1933 break; /* error reading the frame */
1935 /* If the previous frame is displayed, and we haven't yet seen the
1936 selected frame, remember that frame - it's the closest one we've
1937 yet seen before the selected frame. */
1938 if (prev_frame_num != -1 && !selected_frame_seen && prev_frame->flags.passed_dfilter) {
1939 preceding_frame_num = prev_frame_num;
1940 preceding_frame = prev_frame;
1942 add_packet_to_packet_list(fdata, cf, dfcode, filtering_tap_listeners,
1943 tap_flags, &cf->pseudo_header, cf->pd,
1945 add_to_packet_list);
1947 /* If this frame is displayed, and this is the first frame we've
1948 seen displayed after the selected frame, remember this frame -
1949 it's the closest one we've yet seen at or after the selected
1951 if (fdata->flags.passed_dfilter && selected_frame_seen && following_frame_num == -1) {
1952 following_frame_num = fdata->num;
1953 following_frame = fdata;
1955 if (fdata == selected_frame) {
1956 selected_frame_seen = TRUE;
1957 if (fdata->flags.passed_dfilter)
1958 selected_frame_num = fdata->num;
1961 /* Remember this frame - it'll be the previous frame
1962 on the next pass through the loop. */
1963 prev_frame_num = fdata->num;
1967 /* We are done redissecting the packet list. */
1968 cf->redissecting = FALSE;
1971 /* Clear out what remains of the visited flags and per-frame data
1974 XXX - that may cause various forms of bogosity when dissecting
1975 these frames, as they won't have been seen by this sequential
1976 pass, but the only alternative I see is to keep scanning them
1977 even though the user requested that the scan stop, and that
1978 would leave the user stuck with an Wireshark grinding on
1979 until it finishes. Should we just stick them with that? */
1980 for (; framenum <= cf->count; framenum++) {
1981 fdata = frame_data_sequence_find(cf->frames, framenum);
1982 fdata->flags.visited = 0;
1983 frame_data_cleanup(fdata);
1987 /* We're done filtering the packets; destroy the progress bar if it
1989 if (progbar != NULL)
1990 destroy_progress_dlg(progbar);
1992 /* Unfreeze the packet list. */
1993 if (!add_to_packet_list)
1994 packet_list_recreate_visible_rows();
1996 /* Compute the time it took to filter the file */
1997 compute_elapsed(&start_time);
2001 if (selected_frame_num == -1) {
2002 /* The selected frame didn't pass the filter. */
2003 if (selected_frame == NULL) {
2004 /* That's because there *was* no selected frame. Make the first
2005 displayed frame the current frame. */
2006 selected_frame_num = 0;
2008 /* Find the nearest displayed frame to the selected frame (whether
2009 it's before or after that frame) and make that the current frame.
2010 If the next and previous displayed frames are equidistant from the
2011 selected frame, choose the next one. */
2012 g_assert(following_frame == NULL ||
2013 following_frame->num >= selected_frame->num);
2014 g_assert(preceding_frame == NULL ||
2015 preceding_frame->num <= selected_frame->num);
2016 if (following_frame == NULL) {
2017 /* No frame after the selected frame passed the filter, so we
2018 have to select the last displayed frame before the selected
2020 selected_frame_num = preceding_frame_num;
2021 selected_frame = preceding_frame;
2022 } else if (preceding_frame == NULL) {
2023 /* No frame before the selected frame passed the filter, so we
2024 have to select the first displayed frame after the selected
2026 selected_frame_num = following_frame_num;
2027 selected_frame = following_frame;
2029 /* Frames before and after the selected frame passed the filter, so
2030 we'll select the previous frame */
2031 selected_frame_num = preceding_frame_num;
2032 selected_frame = preceding_frame;
2037 if (selected_frame_num == -1) {
2038 /* There are no frames displayed at all. */
2039 cf_unselect_packet(cf);
2041 /* Either the frame that was selected passed the filter, or we've
2042 found the nearest displayed frame to that frame. Select it, make
2043 it the focus row, and make it visible. */
2044 /* Set to invalid to force update of packet list and packet details */
2045 cf->current_row = -1;
2046 if (selected_frame_num == 0) {
2047 packet_list_select_first_row();
2049 if (!packet_list_select_row_from_data(selected_frame)) {
2050 /* We didn't find a row corresponding to this frame.
2051 This means that the frame isn't being displayed currently,
2052 so we can't select it. */
2053 simple_message_box(ESD_TYPE_INFO, NULL,
2054 "The capture file is probably not fully dissected.",
2055 "End of capture exceeded!");
2060 /* Cleanup and release all dfilter resources */
2061 dfilter_free(dfcode);
2066 * Scan trough all frame data and recalculate the ref time
2067 * without rereading the file.
2068 * XXX - do we need a progres bar or is this fast enough?
2071 ref_time_packets(capture_file *cf)
2076 nstime_set_unset(&first_ts);
2077 nstime_set_unset(&prev_dis_ts);
2080 for (framenum = 1; framenum <= cf->count; framenum++) {
2081 fdata = frame_data_sequence_find(cf->frames, framenum);
2083 /* just add some value here until we know if it is being displayed or not */
2084 fdata->cum_bytes = cum_bytes + fdata->pkt_len;
2090 /* If we don't have the time stamp of the first packet in the
2091 capture, it's because this is the first packet. Save the time
2092 stamp of this packet as the time stamp of the first packet. */
2093 if (nstime_is_unset(&first_ts)) {
2094 first_ts = fdata->abs_ts;
2096 /* if this frames is marked as a reference time frame, reset
2097 firstsec and firstusec to this frame */
2098 if (fdata->flags.ref_time) {
2099 first_ts = fdata->abs_ts;
2102 /* If we don't have the time stamp of the previous displayed packet,
2103 it's because this is the first displayed packet. Save the time
2104 stamp of this packet as the time stamp of the previous displayed
2106 if (nstime_is_unset(&prev_dis_ts)) {
2107 prev_dis_ts = fdata->abs_ts;
2110 /* Get the time elapsed between the first packet and this packet. */
2111 nstime_delta(&fdata->rel_ts, &fdata->abs_ts, &first_ts);
2113 /* If it's greater than the current elapsed time, set the elapsed time
2114 to it (we check for "greater than" so as not to be confused by
2115 time moving backwards). */
2116 if ((gint32)cf->elapsed_time.secs < fdata->rel_ts.secs
2117 || ((gint32)cf->elapsed_time.secs == fdata->rel_ts.secs && (gint32)cf->elapsed_time.nsecs < fdata->rel_ts.nsecs)) {
2118 cf->elapsed_time = fdata->rel_ts;
2121 /* If this frame is displayed, get the time elapsed between the
2122 previous displayed packet and this packet. */
2123 if ( fdata->flags.passed_dfilter ) {
2124 nstime_delta(&fdata->del_dis_ts, &fdata->abs_ts, &prev_dis_ts);
2125 prev_dis_ts = fdata->abs_ts;
2131 if ( (fdata->flags.passed_dfilter) || (fdata->flags.ref_time) ) {
2132 /* This frame either passed the display filter list or is marked as
2133 a time reference frame. All time reference frames are displayed
2134 even if they dont pass the display filter */
2135 if (fdata->flags.ref_time) {
2136 /* if this was a TIME REF frame we should reset the cum_bytes field */
2137 cum_bytes = fdata->pkt_len;
2138 fdata->cum_bytes = cum_bytes;
2140 /* increase cum_bytes with this packets length */
2141 cum_bytes += fdata->pkt_len;
2154 process_specified_packets(capture_file *cf, packet_range_t *range,
2155 const char *string1, const char *string2, gboolean terminate_is_stop,
2156 gboolean (*callback)(capture_file *, frame_data *,
2157 union wtap_pseudo_header *, const guint8 *, void *),
2158 void *callback_args)
2160 union wtap_pseudo_header pseudo_header;
2164 guint8 pd[WTAP_MAX_PACKET_SIZE+1];
2165 psp_return_t ret = PSP_FINISHED;
2167 progdlg_t *progbar = NULL;
2170 gboolean progbar_stop_flag;
2171 GTimeVal progbar_start_time;
2172 gchar progbar_status_str[100];
2173 int progbar_nextstep;
2174 int progbar_quantum;
2175 range_process_e process_this;
2177 /* Update the progress bar when it gets to this value. */
2178 progbar_nextstep = 0;
2179 /* When we reach the value that triggers a progress bar update,
2180 bump that value by this amount. */
2181 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
2182 /* Count of packets at which we've looked. */
2184 /* Progress so far. */
2187 progbar_stop_flag = FALSE;
2188 g_get_current_time(&progbar_start_time);
2191 packet_range_process_init(range);
2193 /* Iterate through all the packets, printing the packets that
2194 were selected by the current display filter. */
2195 for (framenum = 1; framenum <= cf->count; framenum++) {
2196 fdata = frame_data_sequence_find(cf->frames, framenum);
2198 /* Create the progress bar if necessary.
2199 We check on every iteration of the loop, so that it takes no
2200 longer than the standard time to create it (otherwise, for a
2201 large file, we might take considerably longer than that standard
2202 time in order to get to the next progress bar step). */
2203 if (progbar == NULL)
2204 progbar = delayed_create_progress_dlg(cf->window, string1, string2,
2207 &progbar_start_time,
2210 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
2211 when we update it, we have to run the GTK+ main loop to get it
2212 to repaint what's pending, and doing so may involve an "ioctl()"
2213 to see if there's any pending input from an X server, and doing
2214 that for every packet can be costly, especially on a big file. */
2215 if (progbar_count >= progbar_nextstep) {
2216 /* let's not divide by zero. I should never be started
2217 * with count == 0, so let's assert that
2219 g_assert(cf->count > 0);
2220 progbar_val = (gfloat) progbar_count / cf->count;
2222 if (progbar != NULL) {
2223 g_snprintf(progbar_status_str, sizeof(progbar_status_str),
2224 "%4u of %u packets", progbar_count, cf->count);
2225 update_progress_dlg(progbar, progbar_val, progbar_status_str);
2228 progbar_nextstep += progbar_quantum;
2231 if (progbar_stop_flag) {
2232 /* Well, the user decided to abort the operation. Just stop,
2233 and arrange to return PSP_STOPPED to our caller, so they know
2234 it was stopped explicitly. */
2241 if (range != NULL) {
2242 /* do we have to process this packet? */
2243 process_this = packet_range_process_packet(range, fdata);
2244 if (process_this == range_process_next) {
2245 /* this packet uninteresting, continue with next one */
2247 } else if (process_this == range_processing_finished) {
2248 /* all interesting packets processed, stop the loop */
2253 /* Get the packet */
2254 if (!cf_read_frame_r(cf, fdata, &pseudo_header, pd)) {
2255 /* Attempt to get the packet failed. */
2259 /* Process the packet */
2260 if (!callback(cf, fdata, &pseudo_header, pd, callback_args)) {
2261 /* Callback failed. We assume it reported the error appropriately. */
2267 /* We're done printing the packets; destroy the progress bar if
2269 if (progbar != NULL)
2270 destroy_progress_dlg(progbar);
2276 gboolean construct_protocol_tree;
2278 } retap_callback_args_t;
2281 retap_packet(capture_file *cf _U_, frame_data *fdata,
2282 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2285 retap_callback_args_t *args = argsp;
2288 epan_dissect_init(&edt, args->construct_protocol_tree, FALSE);
2289 tap_queue_init(&edt);
2290 epan_dissect_run(&edt, pseudo_header, pd, fdata, args->cinfo);
2291 tap_push_tapped_queue(&edt);
2292 epan_dissect_cleanup(&edt);
2298 cf_retap_packets(capture_file *cf)
2300 packet_range_t range;
2301 retap_callback_args_t callback_args;
2302 gboolean filtering_tap_listeners;
2305 /* Do we have any tap listeners with filters? */
2306 filtering_tap_listeners = have_filtering_tap_listeners();
2308 tap_flags = union_of_tap_listener_flags();
2310 /* If any tap listeners have filters, or require the protocol tree,
2311 construct the protocol tree. */
2312 callback_args.construct_protocol_tree = filtering_tap_listeners ||
2313 (tap_flags & TL_REQUIRES_PROTO_TREE);
2315 /* If any tap listeners require the columns, construct them. */
2316 callback_args.cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
2318 /* Reset the tap listeners. */
2319 reset_tap_listeners();
2321 /* Iterate through the list of packets, dissecting all packets and
2322 re-running the taps. */
2323 packet_range_init(&range);
2324 packet_range_process_init(&range);
2325 switch (process_specified_packets(cf, &range, "Recalculating statistics on",
2326 "all packets", TRUE, retap_packet,
2329 /* Completed successfully. */
2333 /* Well, the user decided to abort the refiltering.
2334 Return CF_READ_ABORTED so our caller knows they did that. */
2335 return CF_READ_ABORTED;
2338 /* Error while retapping. */
2339 return CF_READ_ERROR;
2342 g_assert_not_reached();
2347 print_args_t *print_args;
2348 gboolean print_header_line;
2349 char *header_line_buf;
2350 int header_line_buf_len;
2351 gboolean print_formfeed;
2352 gboolean print_separator;
2356 int num_visible_cols;
2358 } print_callback_args_t;
2361 print_packet(capture_file *cf, frame_data *fdata,
2362 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2365 print_callback_args_t *args = argsp;
2372 gboolean proto_tree_needed;
2373 char bookmark_name[9+10+1]; /* "__frameNNNNNNNNNN__\0" */
2374 char bookmark_title[6+10+1]; /* "Frame NNNNNNNNNN__\0" */
2376 /* Create the protocol tree, and make it visible, if we're printing
2377 the dissection or the hex data.
2378 XXX - do we need it if we're just printing the hex data? */
2380 args->print_args->print_dissections != print_dissections_none || args->print_args->print_hex || have_custom_cols(&cf->cinfo);
2381 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2383 /* Fill in the column information if we're printing the summary
2385 if (args->print_args->print_summary) {
2386 col_custom_prime_edt(&edt, &cf->cinfo);
2387 epan_dissect_run(&edt, pseudo_header, pd, fdata, &cf->cinfo);
2388 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2390 epan_dissect_run(&edt, pseudo_header, pd, fdata, NULL);
2392 if (args->print_formfeed) {
2393 if (!new_page(args->print_args->stream))
2396 if (args->print_separator) {
2397 if (!print_line(args->print_args->stream, 0, ""))
2403 * We generate bookmarks, if the output format supports them.
2404 * The name is "__frameN__".
2406 g_snprintf(bookmark_name, sizeof bookmark_name, "__frame%u__", fdata->num);
2408 if (args->print_args->print_summary) {
2409 if (args->print_header_line) {
2410 if (!print_line(args->print_args->stream, 0, args->header_line_buf))
2412 args->print_header_line = FALSE; /* we might not need to print any more */
2414 cp = &args->line_buf[0];
2416 for (i = 0; i < args->num_visible_cols; i++) {
2417 /* Find the length of the string for this column. */
2418 column_len = (int) strlen(cf->cinfo.col_data[args->visible_cols[i]]);
2419 if (args->col_widths[i] > column_len)
2420 column_len = args->col_widths[i];
2422 /* Make sure there's room in the line buffer for the column; if not,
2423 double its length. */
2424 line_len += column_len + 1; /* "+1" for space */
2425 if (line_len > args->line_buf_len) {
2426 cp_off = (int) (cp - args->line_buf);
2427 args->line_buf_len = 2 * line_len;
2428 args->line_buf = g_realloc(args->line_buf, args->line_buf_len + 1);
2429 cp = args->line_buf + cp_off;
2432 /* Right-justify the packet number column. */
2433 if (cf->cinfo.col_fmt[args->visible_cols[i]] == COL_NUMBER)
2434 g_snprintf(cp, column_len+1, "%*s", args->col_widths[i], cf->cinfo.col_data[args->visible_cols[i]]);
2436 g_snprintf(cp, column_len+1, "%-*s", args->col_widths[i], cf->cinfo.col_data[args->visible_cols[i]]);
2438 if (i != args->num_visible_cols - 1)
2444 * Generate a bookmark, using the summary line as the title.
2446 if (!print_bookmark(args->print_args->stream, bookmark_name,
2450 if (!print_line(args->print_args->stream, 0, args->line_buf))
2454 * Generate a bookmark, using "Frame N" as the title, as we're not
2455 * printing the summary line.
2457 g_snprintf(bookmark_title, sizeof bookmark_title, "Frame %u", fdata->num);
2458 if (!print_bookmark(args->print_args->stream, bookmark_name,
2461 } /* if (print_summary) */
2463 if (args->print_args->print_dissections != print_dissections_none) {
2464 if (args->print_args->print_summary) {
2465 /* Separate the summary line from the tree with a blank line. */
2466 if (!print_line(args->print_args->stream, 0, ""))
2470 /* Print the information in that tree. */
2471 if (!proto_tree_print(args->print_args, &edt, args->print_args->stream))
2474 /* Print a blank line if we print anything after this (aka more than one packet). */
2475 args->print_separator = TRUE;
2477 /* Print a header line if we print any more packet summaries */
2478 args->print_header_line = TRUE;
2481 if (args->print_args->print_hex) {
2482 /* Print the full packet data as hex. */
2483 if (!print_hex_data(args->print_args->stream, &edt))
2486 /* Print a blank line if we print anything after this (aka more than one packet). */
2487 args->print_separator = TRUE;
2489 /* Print a header line if we print any more packet summaries */
2490 args->print_header_line = TRUE;
2491 } /* if (args->print_args->print_dissections != print_dissections_none) */
2493 epan_dissect_cleanup(&edt);
2495 /* do we want to have a formfeed between each packet from now on? */
2496 if (args->print_args->print_formfeed) {
2497 args->print_formfeed = TRUE;
2503 epan_dissect_cleanup(&edt);
2508 cf_print_packets(capture_file *cf, print_args_t *print_args)
2510 print_callback_args_t callback_args;
2513 int i, cp_off, column_len, line_len;
2514 int num_visible_col = 0, last_visible_col = 0, visible_col_count;
2519 callback_args.print_args = print_args;
2520 callback_args.print_header_line = TRUE;
2521 callback_args.header_line_buf = NULL;
2522 callback_args.header_line_buf_len = 256;
2523 callback_args.print_formfeed = FALSE;
2524 callback_args.print_separator = FALSE;
2525 callback_args.line_buf = NULL;
2526 callback_args.line_buf_len = 256;
2527 callback_args.col_widths = NULL;
2528 callback_args.num_visible_cols = 0;
2529 callback_args.visible_cols = NULL;
2531 if (!print_preamble(print_args->stream, cf->filename)) {
2532 destroy_print_stream(print_args->stream);
2533 return CF_PRINT_WRITE_ERROR;
2536 if (print_args->print_summary) {
2537 /* We're printing packet summaries. Allocate the header line buffer
2538 and get the column widths. */
2539 callback_args.header_line_buf = g_malloc(callback_args.header_line_buf_len + 1);
2541 /* Find the number of visible columns and the last visible column */
2542 for (i = 0; i < prefs.num_cols; i++) {
2544 clp = g_list_nth(prefs.col_list, i);
2545 if (clp == NULL) /* Sanity check, Invalid column requested */
2548 cfmt = (fmt_data *) clp->data;
2549 if (cfmt->visible) {
2551 last_visible_col = i;
2555 /* Find the widths for each of the columns - maximum of the
2556 width of the title and the width of the data - and construct
2557 a buffer with a line containing the column titles. */
2558 callback_args.num_visible_cols = num_visible_col;
2559 callback_args.col_widths = (gint *) g_malloc(sizeof(gint) * num_visible_col);
2560 callback_args.visible_cols = (gint *) g_malloc(sizeof(gint) * num_visible_col);
2561 cp = &callback_args.header_line_buf[0];
2563 visible_col_count = 0;
2564 for (i = 0; i < cf->cinfo.num_cols; i++) {
2566 clp = g_list_nth(prefs.col_list, i);
2567 if (clp == NULL) /* Sanity check, Invalid column requested */
2570 cfmt = (fmt_data *) clp->data;
2571 if (cfmt->visible == FALSE)
2574 /* Save the order of visible columns */
2575 callback_args.visible_cols[visible_col_count] = i;
2577 /* Don't pad the last column. */
2578 if (i == last_visible_col)
2579 callback_args.col_widths[visible_col_count] = 0;
2581 callback_args.col_widths[visible_col_count] = (gint) strlen(cf->cinfo.col_title[i]);
2582 data_width = get_column_char_width(get_column_format(i));
2583 if (data_width > callback_args.col_widths[visible_col_count])
2584 callback_args.col_widths[visible_col_count] = data_width;
2587 /* Find the length of the string for this column. */
2588 column_len = (int) strlen(cf->cinfo.col_title[i]);
2589 if (callback_args.col_widths[i] > column_len)
2590 column_len = callback_args.col_widths[visible_col_count];
2592 /* Make sure there's room in the line buffer for the column; if not,
2593 double its length. */
2594 line_len += column_len + 1; /* "+1" for space */
2595 if (line_len > callback_args.header_line_buf_len) {
2596 cp_off = (int) (cp - callback_args.header_line_buf);
2597 callback_args.header_line_buf_len = 2 * line_len;
2598 callback_args.header_line_buf = g_realloc(callback_args.header_line_buf,
2599 callback_args.header_line_buf_len + 1);
2600 cp = callback_args.header_line_buf + cp_off;
2603 /* Right-justify the packet number column. */
2604 /* if (cf->cinfo.col_fmt[i] == COL_NUMBER)
2605 g_snprintf(cp, column_len+1, "%*s", callback_args.col_widths[visible_col_count], cf->cinfo.col_title[i]);
2607 g_snprintf(cp, column_len+1, "%-*s", callback_args.col_widths[visible_col_count], cf->cinfo.col_title[i]);
2609 if (i != cf->cinfo.num_cols - 1)
2612 visible_col_count++;
2616 /* Now start out the main line buffer with the same length as the
2617 header line buffer. */
2618 callback_args.line_buf_len = callback_args.header_line_buf_len;
2619 callback_args.line_buf = g_malloc(callback_args.line_buf_len + 1);
2620 } /* if (print_summary) */
2622 /* Iterate through the list of packets, printing the packets we were
2624 ret = process_specified_packets(cf, &print_args->range, "Printing",
2625 "selected packets", TRUE, print_packet,
2628 g_free(callback_args.header_line_buf);
2629 g_free(callback_args.line_buf);
2630 g_free(callback_args.col_widths);
2631 g_free(callback_args.visible_cols);
2636 /* Completed successfully. */
2640 /* Well, the user decided to abort the printing.
2642 XXX - note that what got generated before they did that
2643 will get printed if we're piping to a print program; we'd
2644 have to write to a file and then hand that to the print
2645 program to make it actually not print anything. */
2649 /* Error while printing.
2651 XXX - note that what got generated before they did that
2652 will get printed if we're piping to a print program; we'd
2653 have to write to a file and then hand that to the print
2654 program to make it actually not print anything. */
2655 destroy_print_stream(print_args->stream);
2656 return CF_PRINT_WRITE_ERROR;
2659 if (!print_finale(print_args->stream)) {
2660 destroy_print_stream(print_args->stream);
2661 return CF_PRINT_WRITE_ERROR;
2664 if (!destroy_print_stream(print_args->stream))
2665 return CF_PRINT_WRITE_ERROR;
2671 write_pdml_packet(capture_file *cf _U_, frame_data *fdata,
2672 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2678 /* Create the protocol tree, but don't fill in the column information. */
2679 epan_dissect_init(&edt, TRUE, TRUE);
2680 epan_dissect_run(&edt, pseudo_header, pd, fdata, NULL);
2682 /* Write out the information in that tree. */
2683 proto_tree_write_pdml(&edt, fh);
2685 epan_dissect_cleanup(&edt);
2691 cf_write_pdml_packets(capture_file *cf, print_args_t *print_args)
2696 fh = ws_fopen(print_args->file, "w");
2698 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2700 write_pdml_preamble(fh, cf->filename);
2703 return CF_PRINT_WRITE_ERROR;
2706 /* Iterate through the list of packets, printing the packets we were
2708 ret = process_specified_packets(cf, &print_args->range, "Writing PDML",
2709 "selected packets", TRUE,
2710 write_pdml_packet, fh);
2715 /* Completed successfully. */
2719 /* Well, the user decided to abort the printing. */
2723 /* Error while printing. */
2725 return CF_PRINT_WRITE_ERROR;
2728 write_pdml_finale(fh);
2731 return CF_PRINT_WRITE_ERROR;
2734 /* XXX - check for an error */
2741 write_psml_packet(capture_file *cf, frame_data *fdata,
2742 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2747 gboolean proto_tree_needed;
2749 /* Fill in the column information, only create the protocol tree
2750 if having custom columns. */
2751 proto_tree_needed = have_custom_cols(&cf->cinfo);
2752 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2753 col_custom_prime_edt(&edt, &cf->cinfo);
2754 epan_dissect_run(&edt, pseudo_header, pd, fdata, &cf->cinfo);
2755 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2757 /* Write out the information in that tree. */
2758 proto_tree_write_psml(&edt, fh);
2760 epan_dissect_cleanup(&edt);
2766 cf_write_psml_packets(capture_file *cf, print_args_t *print_args)
2771 fh = ws_fopen(print_args->file, "w");
2773 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2775 write_psml_preamble(fh);
2778 return CF_PRINT_WRITE_ERROR;
2781 /* Iterate through the list of packets, printing the packets we were
2783 ret = process_specified_packets(cf, &print_args->range, "Writing PSML",
2784 "selected packets", TRUE,
2785 write_psml_packet, fh);
2790 /* Completed successfully. */
2794 /* Well, the user decided to abort the printing. */
2798 /* Error while printing. */
2800 return CF_PRINT_WRITE_ERROR;
2803 write_psml_finale(fh);
2806 return CF_PRINT_WRITE_ERROR;
2809 /* XXX - check for an error */
2816 write_csv_packet(capture_file *cf, frame_data *fdata,
2817 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2822 gboolean proto_tree_needed;
2824 /* Fill in the column information, only create the protocol tree
2825 if having custom columns. */
2826 proto_tree_needed = have_custom_cols(&cf->cinfo);
2827 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2828 col_custom_prime_edt(&edt, &cf->cinfo);
2829 epan_dissect_run(&edt, pseudo_header, pd, fdata, &cf->cinfo);
2830 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2832 /* Write out the information in that tree. */
2833 proto_tree_write_csv(&edt, fh);
2835 epan_dissect_cleanup(&edt);
2841 cf_write_csv_packets(capture_file *cf, print_args_t *print_args)
2846 fh = ws_fopen(print_args->file, "w");
2848 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2850 write_csv_preamble(fh);
2853 return CF_PRINT_WRITE_ERROR;
2856 /* Iterate through the list of packets, printing the packets we were
2858 ret = process_specified_packets(cf, &print_args->range, "Writing CSV",
2859 "selected packets", TRUE,
2860 write_csv_packet, fh);
2865 /* Completed successfully. */
2869 /* Well, the user decided to abort the printing. */
2873 /* Error while printing. */
2875 return CF_PRINT_WRITE_ERROR;
2878 write_csv_finale(fh);
2881 return CF_PRINT_WRITE_ERROR;
2884 /* XXX - check for an error */
2891 write_carrays_packet(capture_file *cf _U_, frame_data *fdata,
2892 union wtap_pseudo_header *pseudo_header,
2893 const guint8 *pd, void *argsp)
2898 epan_dissect_init(&edt, TRUE, TRUE);
2899 epan_dissect_run(&edt, pseudo_header, pd, fdata, NULL);
2900 proto_tree_write_carrays(fdata->num, fh, &edt);
2901 epan_dissect_cleanup(&edt);
2907 cf_write_carrays_packets(capture_file *cf, print_args_t *print_args)
2912 fh = ws_fopen(print_args->file, "w");
2915 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2917 write_carrays_preamble(fh);
2921 return CF_PRINT_WRITE_ERROR;
2924 /* Iterate through the list of packets, printing the packets we were
2926 ret = process_specified_packets(cf, &print_args->range,
2928 "selected packets", TRUE,
2929 write_carrays_packet, fh);
2932 /* Completed successfully. */
2935 /* Well, the user decided to abort the printing. */
2938 /* Error while printing. */
2940 return CF_PRINT_WRITE_ERROR;
2943 write_carrays_finale(fh);
2947 return CF_PRINT_WRITE_ERROR;
2955 cf_find_packet_protocol_tree(capture_file *cf, const char *string,
2956 search_direction dir)
2960 mdata.string = string;
2961 mdata.string_len = strlen(string);
2962 return find_packet(cf, match_protocol_tree, &mdata, dir);
2966 cf_find_string_protocol_tree(capture_file *cf, proto_tree *tree, match_data *mdata)
2968 mdata->frame_matched = FALSE;
2969 mdata->string = convert_string_case(cf->sfilter, cf->case_type);
2970 mdata->string_len = strlen(mdata->string);
2972 /* Iterate through all the nodes looking for matching text */
2973 proto_tree_children_foreach(tree, match_subtree_text, mdata);
2974 return mdata->frame_matched ? MR_MATCHED : MR_NOTMATCHED;
2978 match_protocol_tree(capture_file *cf, frame_data *fdata, void *criterion)
2980 match_data *mdata = criterion;
2983 /* Load the frame's data. */
2984 if (!cf_read_frame(cf, fdata)) {
2985 /* Attempt to get the packet failed. */
2989 /* Construct the protocol tree, including the displayed text */
2990 epan_dissect_init(&edt, TRUE, TRUE);
2991 /* We don't need the column information */
2992 epan_dissect_run(&edt, &cf->pseudo_header, cf->pd, fdata, NULL);
2994 /* Iterate through all the nodes, seeing if they have text that matches. */
2996 mdata->frame_matched = FALSE;
2997 proto_tree_children_foreach(edt.tree, match_subtree_text, mdata);
2998 epan_dissect_cleanup(&edt);
2999 return mdata->frame_matched ? MR_MATCHED : MR_NOTMATCHED;
3003 match_subtree_text(proto_node *node, gpointer data)
3005 match_data *mdata = (match_data *) data;
3006 const gchar *string = mdata->string;
3007 size_t string_len = mdata->string_len;
3008 capture_file *cf = mdata->cf;
3009 field_info *fi = PNODE_FINFO(node);
3010 gchar label_str[ITEM_LABEL_LENGTH];
3017 g_assert(fi && "dissection with an invisible proto tree?");
3019 if (mdata->frame_matched) {
3020 /* We already had a match; don't bother doing any more work. */
3024 /* Don't match invisible entries. */
3025 if (PROTO_ITEM_IS_HIDDEN(node))
3028 /* was a free format label produced? */
3030 label_ptr = fi->rep->representation;
3032 /* no, make a generic label */
3033 label_ptr = label_str;
3034 proto_item_fill_label(fi, label_str);
3037 /* Does that label match? */
3038 label_len = strlen(label_ptr);
3039 for (i = 0; i < label_len; i++) {
3040 c_char = label_ptr[i];
3042 c_char = toupper(c_char);
3043 if (c_char == string[c_match]) {
3045 if (c_match == string_len) {
3046 /* No need to look further; we have a match */
3047 mdata->frame_matched = TRUE;
3055 /* Recurse into the subtree, if it exists */
3056 if (node->first_child != NULL)
3057 proto_tree_children_foreach(node, match_subtree_text, mdata);
3061 cf_find_packet_summary_line(capture_file *cf, const char *string,
3062 search_direction dir)
3066 mdata.string = string;
3067 mdata.string_len = strlen(string);
3068 return find_packet(cf, match_summary_line, &mdata, dir);
3072 match_summary_line(capture_file *cf, frame_data *fdata, void *criterion)
3074 match_data *mdata = criterion;
3075 const gchar *string = mdata->string;
3076 size_t string_len = mdata->string_len;
3078 const char *info_column;
3079 size_t info_column_len;
3080 match_result result = MR_NOTMATCHED;
3086 /* Load the frame's data. */
3087 if (!cf_read_frame(cf, fdata)) {
3088 /* Attempt to get the packet failed. */
3092 /* Don't bother constructing the protocol tree */
3093 epan_dissect_init(&edt, FALSE, FALSE);
3094 /* Get the column information */
3095 epan_dissect_run(&edt, &cf->pseudo_header, cf->pd, fdata, &cf->cinfo);
3097 /* Find the Info column */
3098 for (colx = 0; colx < cf->cinfo.num_cols; colx++) {
3099 if (cf->cinfo.fmt_matx[colx][COL_INFO]) {
3100 /* Found it. See if we match. */
3101 info_column = edt.pi.cinfo->col_data[colx];
3102 info_column_len = strlen(info_column);
3103 for (i = 0; i < info_column_len; i++) {
3104 c_char = info_column[i];
3106 c_char = toupper(c_char);
3107 if (c_char == string[c_match]) {
3109 if (c_match == string_len) {
3110 result = MR_MATCHED;
3119 epan_dissect_cleanup(&edt);
3126 } cbs_t; /* "Counted byte string" */
3129 cf_find_packet_data(capture_file *cf, const guint8 *string, size_t string_size,
3130 search_direction dir)
3135 info.data_len = string_size;
3137 /* String or hex search? */
3139 /* String search - what type of string? */
3140 switch (cf->scs_type) {
3142 case SCS_ASCII_AND_UNICODE:
3143 return find_packet(cf, match_ascii_and_unicode, &info, dir);
3146 return find_packet(cf, match_ascii, &info, dir);
3149 return find_packet(cf, match_unicode, &info, dir);
3152 g_assert_not_reached();
3156 return find_packet(cf, match_binary, &info, dir);
3160 match_ascii_and_unicode(capture_file *cf, frame_data *fdata, void *criterion)
3162 cbs_t *info = criterion;
3163 const guint8 *ascii_text = info->data;
3164 size_t textlen = info->data_len;
3165 match_result result;
3171 /* Load the frame's data. */
3172 if (!cf_read_frame(cf, fdata)) {
3173 /* Attempt to get the packet failed. */
3177 result = MR_NOTMATCHED;
3178 buf_len = fdata->pkt_len;
3180 while (i < buf_len) {
3183 c_char = toupper(c_char);
3184 if (c_char != '\0') {
3185 if (c_char == ascii_text[c_match]) {
3187 if (c_match == textlen) {
3188 result = MR_MATCHED;
3189 cf->search_pos = i; /* Save the position of the last character
3190 for highlighting the field. */
3195 g_assert(i>=c_match);
3196 i -= (guint32)c_match;
3206 match_ascii(capture_file *cf, frame_data *fdata, void *criterion)
3208 cbs_t *info = criterion;
3209 const guint8 *ascii_text = info->data;
3210 size_t textlen = info->data_len;
3211 match_result result;
3217 /* Load the frame's data. */
3218 if (!cf_read_frame(cf, fdata)) {
3219 /* Attempt to get the packet failed. */
3223 result = MR_NOTMATCHED;
3224 buf_len = fdata->pkt_len;
3226 while (i < buf_len) {
3229 c_char = toupper(c_char);
3230 if (c_char == ascii_text[c_match]) {
3232 if (c_match == textlen) {
3233 result = MR_MATCHED;
3234 cf->search_pos = i; /* Save the position of the last character
3235 for highlighting the field. */
3240 g_assert(i>=c_match);
3241 i -= (guint32)c_match;
3251 match_unicode(capture_file *cf, frame_data *fdata, void *criterion)
3253 cbs_t *info = criterion;
3254 const guint8 *ascii_text = info->data;
3255 size_t textlen = info->data_len;
3256 match_result result;
3262 /* Load the frame's data. */
3263 if (!cf_read_frame(cf, fdata)) {
3264 /* Attempt to get the packet failed. */
3268 result = MR_NOTMATCHED;
3269 buf_len = fdata->pkt_len;
3271 while (i < buf_len) {
3274 c_char = toupper(c_char);
3275 if (c_char == ascii_text[c_match]) {
3277 if (c_match == textlen) {
3278 result = MR_MATCHED;
3279 cf->search_pos = i; /* Save the position of the last character
3280 for highlighting the field. */
3286 g_assert(i>=(c_match*2));
3287 i -= (guint32)c_match*2;
3296 match_binary(capture_file *cf, frame_data *fdata, void *criterion)
3298 cbs_t *info = criterion;
3299 const guint8 *binary_data = info->data;
3300 size_t datalen = info->data_len;
3301 match_result result;
3306 /* Load the frame's data. */
3307 if (!cf_read_frame(cf, fdata)) {
3308 /* Attempt to get the packet failed. */
3312 result = MR_NOTMATCHED;
3313 buf_len = fdata->pkt_len;
3315 while (i < buf_len) {
3316 if (cf->pd[i] == binary_data[c_match]) {
3318 if (c_match == datalen) {
3319 result = MR_MATCHED;
3320 cf->search_pos = i; /* Save the position of the last character
3321 for highlighting the field. */
3326 g_assert(i>=c_match);
3327 i -= (guint32)c_match;
3336 cf_find_packet_dfilter(capture_file *cf, dfilter_t *sfcode,
3337 search_direction dir)
3339 return find_packet(cf, match_dfilter, sfcode, dir);
3343 cf_find_packet_dfilter_string(capture_file *cf, const char *filter,
3344 search_direction dir)
3349 if (!dfilter_compile(filter, &sfcode)) {
3351 * XXX - this shouldn't happen, as the filter string is machine
3356 if (sfcode == NULL) {
3358 * XXX - this shouldn't happen, as the filter string is machine
3363 result = find_packet(cf, match_dfilter, sfcode, dir);
3364 dfilter_free(sfcode);
3369 match_dfilter(capture_file *cf, frame_data *fdata, void *criterion)
3371 dfilter_t *sfcode = criterion;
3373 match_result result;
3375 /* Load the frame's data. */
3376 if (!cf_read_frame(cf, fdata)) {
3377 /* Attempt to get the packet failed. */
3381 epan_dissect_init(&edt, TRUE, FALSE);
3382 epan_dissect_prime_dfilter(&edt, sfcode);
3383 epan_dissect_run(&edt, &cf->pseudo_header, cf->pd, fdata, NULL);
3384 result = dfilter_apply_edt(sfcode, &edt) ? MR_MATCHED : MR_NOTMATCHED;
3385 epan_dissect_cleanup(&edt);
3390 cf_find_packet_marked(capture_file *cf, search_direction dir)
3392 return find_packet(cf, match_marked, NULL, dir);
3396 match_marked(capture_file *cf _U_, frame_data *fdata, void *criterion _U_)
3398 return fdata->flags.marked ? MR_MATCHED : MR_NOTMATCHED;
3402 cf_find_packet_time_reference(capture_file *cf, search_direction dir)
3404 return find_packet(cf, match_time_reference, NULL, dir);
3408 match_time_reference(capture_file *cf _U_, frame_data *fdata, void *criterion _U_)
3410 return fdata->flags.ref_time ? MR_MATCHED : MR_NOTMATCHED;
3414 find_packet(capture_file *cf,
3415 match_result (*match_function)(capture_file *, frame_data *, void *),
3416 void *criterion, search_direction dir)
3418 frame_data *start_fd;
3421 frame_data *new_fd = NULL;
3422 progdlg_t *progbar = NULL;
3427 GTimeVal start_time;
3428 gchar status_str[100];
3429 int progbar_nextstep;
3430 int progbar_quantum;
3432 match_result result;
3434 start_fd = cf->current_frame;
3435 if (start_fd != NULL) {
3436 /* Iterate through the list of packets, starting at the packet we've
3437 picked, calling a routine to run the filter on the packet, see if
3438 it matches, and stop if so. */
3440 framenum = start_fd->num;
3442 /* Update the progress bar when it gets to this value. */
3443 progbar_nextstep = 0;
3444 /* When we reach the value that triggers a progress bar update,
3445 bump that value by this amount. */
3446 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
3447 /* Progress so far. */
3451 g_get_current_time(&start_time);
3453 title = cf->sfilter?cf->sfilter:"";
3455 /* Create the progress bar if necessary.
3456 We check on every iteration of the loop, so that it takes no
3457 longer than the standard time to create it (otherwise, for a
3458 large file, we might take considerably longer than that standard
3459 time in order to get to the next progress bar step). */
3460 if (progbar == NULL)
3461 progbar = delayed_create_progress_dlg(cf->window, "Searching", title,
3462 FALSE, &stop_flag, &start_time, progbar_val);
3464 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
3465 when we update it, we have to run the GTK+ main loop to get it
3466 to repaint what's pending, and doing so may involve an "ioctl()"
3467 to see if there's any pending input from an X server, and doing
3468 that for every packet can be costly, especially on a big file. */
3469 if (count >= progbar_nextstep) {
3470 /* let's not divide by zero. I should never be started
3471 * with count == 0, so let's assert that
3473 g_assert(cf->count > 0);
3475 progbar_val = (gfloat) count / cf->count;
3477 if (progbar != NULL) {
3478 g_snprintf(status_str, sizeof(status_str),
3479 "%4u of %u packets", count, cf->count);
3480 update_progress_dlg(progbar, progbar_val, status_str);
3483 progbar_nextstep += progbar_quantum;
3487 /* Well, the user decided to abort the search. Go back to the
3488 frame where we started. */
3493 /* Go past the current frame. */
3494 if (dir == SD_BACKWARD) {
3495 /* Go on to the previous frame. */
3496 if (framenum == 1) {
3498 * XXX - other apps have a bit more of a detailed message
3499 * for this, and instead of offering "OK" and "Cancel",
3500 * they offer things such as "Continue" and "Cancel";
3501 * we need an API for popping up alert boxes with
3502 * {Verb} and "Cancel".
3505 if (prefs.gui_find_wrap)
3507 statusbar_push_temporary_msg("Search reached the beginning. Continuing at end.");
3508 framenum = cf->count; /* wrap around */
3512 statusbar_push_temporary_msg("Search reached the beginning.");
3513 framenum = start_fd->num; /* stay on previous packet */
3518 /* Go on to the next frame. */
3519 if (framenum == cf->count) {
3520 if (prefs.gui_find_wrap)
3522 statusbar_push_temporary_msg("Search reached the end. Continuing at beginning.");
3523 framenum = 1; /* wrap around */
3527 statusbar_push_temporary_msg("Search reached the end.");
3528 framenum = start_fd->num; /* stay on previous packet */
3533 fdata = frame_data_sequence_find(cf->frames, framenum);
3537 /* Is this packet in the display? */
3538 if (fdata->flags.passed_dfilter) {
3539 /* Yes. Does it match the search criterion? */
3540 result = (*match_function)(cf, fdata, criterion);
3541 if (result == MR_ERROR) {
3542 /* Error; our caller has reported the error. Go back to the frame
3543 where we started. */
3546 } else if (result == MR_MATCHED) {
3547 /* Yes. Go to the new frame. */
3553 if (fdata == start_fd) {
3554 /* We're back to the frame we were on originally, and that frame
3555 doesn't match the search filter. The search failed. */
3560 /* We're done scanning the packets; destroy the progress bar if it
3562 if (progbar != NULL)
3563 destroy_progress_dlg(progbar);
3566 if (new_fd != NULL) {
3567 /* Find and select */
3568 cf->search_in_progress = TRUE;
3569 found = packet_list_select_row_from_data(new_fd);
3570 cf->search_in_progress = FALSE;
3571 cf->search_pos = 0; /* Reset the position */
3573 /* We didn't find a row corresponding to this frame.
3574 This means that the frame isn't being displayed currently,
3575 so we can't select it. */
3576 simple_message_box(ESD_TYPE_INFO, NULL,
3577 "The capture file is probably not fully dissected.",
3578 "End of capture exceeded!");
3581 return TRUE; /* success */
3583 return FALSE; /* failure */
3587 cf_goto_frame(capture_file *cf, guint fnumber)
3591 fdata = frame_data_sequence_find(cf->frames, fnumber);
3593 if (fdata == NULL) {
3594 /* we didn't find a packet with that packet number */
3595 statusbar_push_temporary_msg("There is no packet number %u.", fnumber);
3596 return FALSE; /* we failed to go to that packet */
3598 if (!fdata->flags.passed_dfilter) {
3599 /* that packet currently isn't displayed */
3600 /* XXX - add it to the set of displayed packets? */
3601 statusbar_push_temporary_msg("Packet number %u isn't displayed.", fnumber);
3602 return FALSE; /* we failed to go to that packet */
3605 if (!packet_list_select_row_from_data(fdata)) {
3606 /* We didn't find a row corresponding to this frame.
3607 This means that the frame isn't being displayed currently,
3608 so we can't select it. */
3609 simple_message_box(ESD_TYPE_INFO, NULL,
3610 "The capture file is probably not fully dissected.",
3611 "End of capture exceeded!");
3614 return TRUE; /* we got to that packet */
3618 cf_goto_top_frame(void)
3620 /* Find and select */
3621 packet_list_select_first_row();
3622 return TRUE; /* we got to that packet */
3626 cf_goto_bottom_frame(void)
3628 /* Find and select */
3629 packet_list_select_last_row();
3630 return TRUE; /* we got to that packet */
3634 * Go to frame specified by currently selected protocol tree item.
3637 cf_goto_framenum(capture_file *cf)
3639 header_field_info *hfinfo;
3642 if (cf->finfo_selected) {
3643 hfinfo = cf->finfo_selected->hfinfo;
3645 if (hfinfo->type == FT_FRAMENUM) {
3646 framenum = fvalue_get_uinteger(&cf->finfo_selected->value);
3648 return cf_goto_frame(cf, framenum);
3655 /* Select the packet on a given row. */
3657 cf_select_packet(capture_file *cf, int row)
3659 epan_dissect_t *old_edt;
3662 /* Get the frame data struct pointer for this frame */
3663 fdata = packet_list_get_row_data(row);
3665 if (fdata == NULL) {
3666 /* XXX - if a GtkCList's selection mode is GTK_SELECTION_BROWSE, when
3667 the first entry is added to it by "real_insert_row()", that row
3668 is selected (see "real_insert_row()", in "ui/gtk/gtkclist.c", in both
3669 our version and the vanilla GTK+ version).
3671 This means that a "select-row" signal is emitted; this causes
3672 "packet_list_select_cb()" to be called, which causes "cf_select_packet()"
3675 "cf_select_packet()" fetches, above, the data associated with the
3676 row that was selected; however, as "gtk_clist_append()", which
3677 called "real_insert_row()", hasn't yet returned, we haven't yet
3678 associated any data with that row, so we get back a null pointer.
3680 We can't assume that there's only one frame in the frame list,
3681 either, as we may be filtering the display.
3683 We therefore assume that, if "row" is 0, i.e. the first row
3684 is being selected, and "cf->first_displayed" equals
3685 "cf->last_displayed", i.e. there's only one frame being
3686 displayed, that frame is the frame we want.
3688 This means we have to set "cf->first_displayed" and
3689 "cf->last_displayed" before adding the row to the
3690 GtkCList; see the comment in "add_packet_to_packet_list()". */
3692 if (row == 0 && cf->first_displayed == cf->last_displayed)
3693 fdata = frame_data_sequence_find(cf->frames, cf->first_displayed);
3696 /* If fdata _still_ isn't set simply give up. */
3697 if (fdata == NULL) {
3701 /* Get the data in that frame. */
3702 if (!cf_read_frame (cf, fdata)) {
3706 /* Record that this frame is the current frame. */
3707 cf->current_frame = fdata;
3708 cf->current_row = row;
3711 /* Create the logical protocol tree. */
3712 /* We don't need the columns here. */
3713 cf->edt = epan_dissect_new(TRUE, TRUE);
3715 tap_build_interesting(cf->edt);
3716 epan_dissect_run(cf->edt, &cf->pseudo_header, cf->pd, cf->current_frame,
3719 dfilter_macro_build_ftv_cache(cf->edt->tree);
3721 cf_callback_invoke(cf_cb_packet_selected, cf);
3723 if (old_edt != NULL)
3724 epan_dissect_free(old_edt);
3728 /* Unselect the selected packet, if any. */
3730 cf_unselect_packet(capture_file *cf)
3732 epan_dissect_t *old_edt = cf->edt;
3736 /* No packet is selected. */
3737 cf->current_frame = NULL;
3738 cf->current_row = 0;
3740 cf_callback_invoke(cf_cb_packet_unselected, cf);
3742 /* No protocol tree means no selected field. */
3743 cf_unselect_field(cf);
3745 /* Destroy the epan_dissect_t for the unselected packet. */
3746 if (old_edt != NULL)
3747 epan_dissect_free(old_edt);
3750 /* Unset the selected protocol tree field, if any. */
3752 cf_unselect_field(capture_file *cf)
3754 cf->finfo_selected = NULL;
3756 cf_callback_invoke(cf_cb_field_unselected, cf);
3760 * Mark a particular frame.
3763 cf_mark_frame(capture_file *cf, frame_data *frame)
3765 if (! frame->flags.marked) {
3766 frame->flags.marked = TRUE;
3767 if (cf->count > cf->marked_count)
3773 * Unmark a particular frame.
3776 cf_unmark_frame(capture_file *cf, frame_data *frame)
3778 if (frame->flags.marked) {
3779 frame->flags.marked = FALSE;
3780 if (cf->marked_count > 0)
3786 * Ignore a particular frame.
3789 cf_ignore_frame(capture_file *cf, frame_data *frame)
3791 if (! frame->flags.ignored) {
3792 frame->flags.ignored = TRUE;
3793 if (cf->count > cf->ignored_count)
3794 cf->ignored_count++;
3799 * Un-ignore a particular frame.
3802 cf_unignore_frame(capture_file *cf, frame_data *frame)
3804 if (frame->flags.ignored) {
3805 frame->flags.ignored = FALSE;
3806 if (cf->ignored_count > 0)
3807 cf->ignored_count--;
3812 * Read the comment in SHB block
3816 cf_read_shb_comment(capture_file *cf)
3818 wtapng_section_t *shb_inf;
3819 const gchar *temp_str;
3821 /* Get info from SHB */
3822 shb_inf = wtap_file_get_shb_info(cf->wth);
3823 if (shb_inf == NULL)
3825 temp_str = shb_inf->opt_comment;
3833 cf_update_capture_comment(capture_file *cf, gchar *comment)
3835 wtapng_section_t *shb_inf;
3837 /* Get info from SHB */
3838 shb_inf = wtap_file_get_shb_info(cf->wth);
3840 /* See if the comment has changed or not */
3841 if (shb_inf && shb_inf->opt_comment) {
3842 if (strcmp(shb_inf->opt_comment, comment) == 0) {
3851 /* The comment has changed, let's update it */
3852 wtap_write_shb_comment(cf->wth, comment);
3853 /* Mark the file as having unsaved changes */
3854 cf->unsaved_changes = TRUE;
3858 cf_update_packet_comment(capture_file *cf, frame_data *fdata, gchar *comment)
3860 if (fdata->opt_comment != NULL) {
3861 /* OK, remove the old comment. */
3862 g_free(fdata->opt_comment);
3863 fdata->opt_comment = NULL;
3864 cf->packet_comment_count--;
3866 if (comment != NULL) {
3867 /* Add the new comment. */
3868 fdata->opt_comment = comment;
3869 cf->packet_comment_count++;
3872 /* OK, we have unsaved changes. */
3873 cf->unsaved_changes = TRUE;
3877 * Does this capture file have any comments?
3880 cf_has_comments(capture_file *cf)
3882 return (cf_read_shb_comment(cf) != NULL || cf->packet_comment_count != 0);
3889 } save_callback_args_t;
3892 * Save a capture to a file, in a particular format, saving either
3893 * all packets, all currently-displayed packets, or all marked packets.
3895 * Returns TRUE if it succeeds, FALSE otherwise; if it fails, it pops
3896 * up a message box for the failure.
3899 save_packet(capture_file *cf _U_, frame_data *fdata,
3900 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
3903 save_callback_args_t *args = argsp;
3904 struct wtap_pkthdr hdr;
3906 gchar *display_basename;
3908 /* init the wtap header for saving */
3909 /* XXX - these are the only flags that correspond to data that we have
3910 in the frame_data structure and that matter on a per-packet basis.
3912 For WTAP_HAS_CAP_LEN, either the file format has separate "captured"
3913 and "on the wire" lengths, or it doesn't.
3915 For WTAP_HAS_DROP_COUNT, Wiretap doesn't actually supply the value
3918 For WTAP_HAS_PACK_FLAGS, we currently don't save the FCS length
3919 from the packet flags. */
3920 hdr.presence_flags = 0;
3921 if (fdata->flags.has_ts)
3922 hdr.presence_flags |= WTAP_HAS_TS;
3923 if (fdata->flags.has_ts)
3924 hdr.presence_flags |= WTAP_HAS_INTERFACE_ID;
3925 hdr.ts.secs = fdata->abs_ts.secs;
3926 hdr.ts.nsecs = fdata->abs_ts.nsecs;
3927 hdr.caplen = fdata->cap_len;
3928 hdr.len = fdata->pkt_len;
3929 hdr.pkt_encap = fdata->lnk_t;
3931 hdr.interface_id = fdata->interface_id; /* identifier of the interface. */
3933 hdr.opt_comment = fdata->opt_comment; /* NULL if not available */
3936 hdr.pack_flags = /* XXX - 0 for now (any value for "we don't have it"?) */
3938 /* and save the packet */
3939 if (!wtap_dump(args->pdh, &hdr, pseudo_header, pd, &err)) {
3941 /* Wiretap error. */
3944 case WTAP_ERR_UNSUPPORTED_ENCAP:
3946 * This is a problem with the particular frame we're writing;
3947 * note that, and give the frame number.
3949 simple_error_message_box(
3950 "Frame %u has a network type that can't be saved in a \"%s\" file.",
3951 fdata->num, wtap_file_type_string(args->file_type));
3955 display_basename = g_filename_display_basename(args->fname);
3956 simple_error_message_box(
3957 "An error occurred while writing to the file \"%s\": %s.",
3958 display_basename, wtap_strerror(err));
3959 g_free(display_basename);
3964 write_failure_alert_box(args->fname, err);
3972 * Can this capture file be written out in any format using Wiretap
3973 * rather than by copying the raw data?
3976 cf_can_write_with_wiretap(capture_file *cf)
3980 for (ft = 0; ft < WTAP_NUM_FILE_TYPES; ft++) {
3981 /* To save a file with Wiretap, Wiretap has to handle that format,
3982 and its code to handle that format must be able to write a file
3983 with this file's encapsulation types. */
3984 if (wtap_dump_can_write_encaps(ft, cf->linktypes)) {
3985 /* OK, we can write it out in this type. */
3990 /* No, we couldn't save it in any format. */
3995 * Quick scan to find packet offsets.
3997 static cf_read_status_t
3998 rescan_file(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
4000 const struct wtap_pkthdr *phdr;
4005 progdlg_t *volatile progbar = NULL;
4007 volatile gint64 size;
4008 volatile float progbar_val;
4009 GTimeVal start_time;
4010 gchar status_str[100];
4011 volatile gint64 progbar_nextstep;
4012 volatile gint64 progbar_quantum;
4015 volatile int count = 0;
4017 volatile int displayed_once = 0;
4020 /* Close the old handle. */
4021 wtap_close(cf->wth);
4023 /* Open the new file. */
4024 cf->wth = wtap_open_offline(fname, err, &err_info, TRUE);
4025 if (cf->wth == NULL) {
4026 cf_open_failure_alert_box(fname, *err, err_info, FALSE, 0);
4027 return CF_READ_ERROR;
4030 /* We're scanning a file whose contents should be the same as what
4031 we had before, so we don't discard dissection state etc.. */
4034 /* Set the file name because we need it to set the follow stream filter.
4035 XXX - is that still true? We need it for other reasons, though,
4037 cf->filename = g_strdup(fname);
4039 /* Indicate whether it's a permanent or temporary file. */
4040 cf->is_tempfile = is_tempfile;
4042 /* No user changes yet. */
4043 cf->unsaved_changes = FALSE;
4045 cf->cd_t = wtap_file_type(cf->wth);
4046 cf->linktypes = g_array_sized_new(FALSE, FALSE, (guint) sizeof(int), 1);
4048 cf->snap = wtap_snapshot_length(cf->wth);
4049 if (cf->snap == 0) {
4050 /* Snapshot length not known. */
4051 cf->has_snap = FALSE;
4052 cf->snap = WTAP_MAX_PACKET_SIZE;
4054 cf->has_snap = TRUE;
4056 name_ptr = g_filename_display_basename(cf->filename);
4058 cf_callback_invoke(cf_cb_file_rescan_started, cf);
4060 /* Record whether the file is compressed.
4061 XXX - do we know this at open time? */
4062 cf->iscompressed = wtap_iscompressed(cf->wth);
4064 /* Find the size of the file. */
4065 size = wtap_file_size(cf->wth, NULL);
4067 /* Update the progress bar when it gets to this value. */
4068 progbar_nextstep = 0;
4069 /* When we reach the value that triggers a progress bar update,
4070 bump that value by this amount. */
4072 progbar_quantum = size/N_PROGBAR_UPDATES;
4073 if (progbar_quantum < MIN_QUANTUM)
4074 progbar_quantum = MIN_QUANTUM;
4076 progbar_quantum = 0;
4077 /* Progress so far. */
4081 g_get_current_time(&start_time);
4084 phdr = wtap_phdr(cf->wth);
4085 while ((wtap_read(cf->wth, err, &err_info, &data_offset))) {
4087 fdata = frame_data_sequence_find(cf->frames, framenum);
4088 fdata->file_off = data_offset;
4091 file_pos = wtap_read_so_far(cf->wth);
4093 /* Create the progress bar if necessary.
4094 * Check whether it should be created or not every MIN_NUMBER_OF_PACKET
4096 if ((progbar == NULL) && !(count % MIN_NUMBER_OF_PACKET)) {
4097 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
4098 progbar = delayed_create_progress_dlg(cf->window, "Rescanning", name_ptr,
4099 TRUE, &stop_flag, &start_time, progbar_val);
4102 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
4103 when we update it, we have to run the GTK+ main loop to get it
4104 to repaint what's pending, and doing so may involve an "ioctl()"
4105 to see if there's any pending input from an X server, and doing
4106 that for every packet can be costly, especially on a big file. */
4107 if (file_pos >= progbar_nextstep) {
4108 if (progbar != NULL) {
4109 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
4110 /* update the packet bar content on the first run or frequently on very large files */
4112 if (progbar_quantum > 500000 || displayed_once == 0) {
4113 if ((auto_scroll_live || displayed_once == 0 || cf->displayed_count < 1000) && cf->count != 0) {
4115 packets_bar_update();
4118 #endif /* HAVE_LIBPCAP */
4119 update_progress_dlg(progbar, progbar_val, status_str);
4121 progbar_nextstep += progbar_quantum;
4126 /* Well, the user decided to abort the rescan. Sadly, as this
4127 isn't a reread, recovering is difficult, so we'll just
4128 close the current capture. */
4132 /* Add this packet's link-layer encapsulation type to cf->linktypes, if
4133 it's not already there.
4134 XXX - yes, this is O(N), so if every packet had a different
4135 link-layer encapsulation type, it'd be O(N^2) to read the file, but
4136 there are probably going to be a small number of encapsulation types
4138 cf_add_encapsulation_type(cf, phdr->pkt_encap);
4141 /* Free the display name */
4144 /* We're done reading the file; destroy the progress bar if it was created. */
4145 if (progbar != NULL)
4146 destroy_progress_dlg(progbar);
4148 /* We're done reading sequentially through the file. */
4149 cf->state = FILE_READ_DONE;
4151 /* Close the sequential I/O side, to free up memory it requires. */
4152 wtap_sequential_close(cf->wth);
4154 /* compute the time it took to load the file */
4155 compute_elapsed(&start_time);
4157 /* Set the file encapsulation type now; we don't know what it is until
4158 we've looked at all the packets, as we don't know until then whether
4159 there's more than one type (and thus whether it's
4160 WTAP_ENCAP_PER_PACKET). */
4161 cf->lnk_t = wtap_file_encap(cf->wth);
4163 cf_callback_invoke(cf_cb_file_rescan_finished, cf);
4166 /* Our caller will give up at this point. */
4167 return CF_READ_ABORTED;
4171 /* Put up a message box noting that the read failed somewhere along
4172 the line. Don't throw out the stuff we managed to read, though,
4176 case WTAP_ERR_UNSUPPORTED:
4177 simple_error_message_box(
4178 "The capture file contains record data that Wireshark doesn't support.\n(%s)",
4183 case WTAP_ERR_UNSUPPORTED_ENCAP:
4184 simple_error_message_box(
4185 "The capture file has a packet with a network type that Wireshark doesn't support.\n(%s)",
4190 case WTAP_ERR_CANT_READ:
4191 simple_error_message_box(
4192 "An attempt to read from the capture file failed for"
4193 " some unknown reason.");
4196 case WTAP_ERR_SHORT_READ:
4197 simple_error_message_box(
4198 "The capture file appears to have been cut short"
4199 " in the middle of a packet.");
4202 case WTAP_ERR_BAD_FILE:
4203 simple_error_message_box(
4204 "The capture file appears to be damaged or corrupt.\n(%s)",
4209 case WTAP_ERR_DECOMPRESS:
4210 simple_error_message_box(
4211 "The compressed capture file appears to be damaged or corrupt.\n"
4217 simple_error_message_box(
4218 "An error occurred while reading the"
4219 " capture file: %s.", wtap_strerror(*err));
4222 return CF_READ_ERROR;
4228 cf_save_packets(capture_file *cf, const char *fname, guint save_format,
4229 gboolean compressed, gboolean discard_comments,
4230 gboolean dont_reopen)
4232 gchar *fname_new = NULL;
4241 save_callback_args_t callback_args;
4243 gchar *display_basename;
4248 cf_callback_invoke(cf_cb_file_save_started, (gpointer)fname);
4250 if (save_format == cf->cd_t && compressed == cf->iscompressed
4251 && !discard_comments && !cf->unsaved_changes) {
4252 /* We're saving in the format it's already in, and we're
4253 not discarding comments, and there are no changes we have
4254 in memory that aren't saved to the file, so we can just move
4255 or copy the raw data. */
4257 if (cf->is_tempfile) {
4258 /* The file being saved is a temporary file from a live
4259 capture, so it doesn't need to stay around under that name;
4260 first, try renaming the capture buffer file to the new name.
4261 This acts as a "safe save", in that, if the file already
4262 exists, the existing file will be removed only if the rename
4265 Sadly, on Windows, as we have the current capture file
4266 open, even MoveFileEx() with MOVEFILE_REPLACE_EXISTING
4267 (to cause the rename to remove an existing target), as
4268 done by ws_stdio_rename() (ws_rename() is #defined to
4269 be ws_stdio_rename() on Windows) will fail.
4271 According to the MSDN documentation for CreateFile(), if,
4272 when we open a capture file, we were to directly do a CreateFile(),
4273 opening with FILE_SHARE_DELETE|FILE_SHARE_READ, and then
4274 convert it to a file descriptor with _open_osfhandle(),
4275 that would allow the file to be renamed out from under us.
4277 However, that doesn't work in practice. Perhaps the problem
4278 is that the process doing the rename is the process that
4279 has the file open. */
4281 if (ws_rename(cf->filename, fname) == 0) {
4282 /* That succeeded - there's no need to copy the source file. */
4283 how_to_save = SAVE_WITH_MOVE;
4285 if (errno == EXDEV) {
4286 /* They're on different file systems, so we have to copy the
4288 how_to_save = SAVE_WITH_COPY;
4290 /* The rename failed, but not because they're on different
4291 file systems - put up an error message. (Or should we
4292 just punt and try to copy? The only reason why I'd
4293 expect the rename to fail and the copy to succeed would
4294 be if we didn't have permission to remove the file from
4295 the temporary directory, and that might be fixable - but
4296 is it worth requiring the user to go off and fix it?) */
4297 cf_rename_failure_alert_box(fname, errno);
4302 how_to_save = SAVE_WITH_COPY;
4305 /* It's a permanent file, so we should copy it, and not remove the
4307 how_to_save = SAVE_WITH_COPY;
4310 if (how_to_save == SAVE_WITH_COPY) {
4311 /* Copy the file, if we haven't moved it. If we're overwriting
4312 an existing file, we do it with a "safe save", by writing
4313 to a new file and, if the write succeeds, renaming the
4314 new file on top of the old file. */
4315 if (file_exists(fname)) {
4316 fname_new = g_strdup_printf("%s~", fname);
4317 if (!copy_file_binary_mode(cf->filename, fname_new))
4320 if (!copy_file_binary_mode(cf->filename, fname))
4325 /* Either we're saving in a different format or we're saving changes,
4326 such as added, modified, or removed comments, that haven't yet
4327 been written to the underlying file; we can't do that by copying
4328 or moving the capture file, we have to do it by writing the packets
4331 wtapng_section_t *shb_hdr = NULL;
4332 wtapng_iface_descriptions_t *idb_inf = NULL;
4335 shb_hdr = wtap_file_get_shb_info(cf->wth);
4336 idb_inf = wtap_file_get_idb_info(cf->wth);
4338 /* Determine what file encapsulation type we should use. */
4339 encap = wtap_dump_file_encap_type(cf->linktypes);
4341 if (file_exists(fname)) {
4342 /* We're overwriting an existing file; write out to a new file,
4343 and, if that succeeds, rename the new file on top of the
4344 old file. That makes this a "safe save", so that we don't
4345 lose the old file if we have a problem writing out the new
4346 file. (If the existing file is the current capture file,
4347 we *HAVE* to do that, otherwise we're overwriting the file
4348 from which we're reading the packets that we're writing!) */
4349 fname_new = g_strdup_printf("%s~", fname);
4350 pdh = wtap_dump_open_ng(fname_new, save_format, encap, cf->snap,
4351 compressed, shb_hdr, idb_inf, &err);
4353 pdh = wtap_dump_open_ng(fname, save_format, encap, cf->snap,
4354 compressed, shb_hdr, idb_inf, &err);
4360 cf_open_failure_alert_box(fname, err, NULL, TRUE, save_format);
4364 /* Add address resolution */
4365 wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list());
4367 /* Iterate through the list of packets, processing all the packets. */
4368 callback_args.pdh = pdh;
4369 callback_args.fname = fname;
4370 callback_args.file_type = save_format;
4371 switch (process_specified_packets(cf, NULL, "Saving", "packets",
4372 TRUE, save_packet, &callback_args)) {
4375 /* Completed successfully. */
4379 /* The user decided to abort the saving.
4380 If we're writing to a temporary file, remove it.
4381 XXX - should we do so even if we're not writing to a
4383 wtap_dump_close(pdh, &err);
4384 if (fname_new != NULL)
4385 ws_unlink(fname_new);
4386 cf_callback_invoke(cf_cb_file_save_stopped, NULL);
4387 return CF_WRITE_ABORTED;
4390 /* Error while saving.
4391 If we're writing to a temporary file, remove it. */
4392 if (fname_new != NULL)
4393 ws_unlink(fname_new);
4394 wtap_dump_close(pdh, &err);
4398 if (!wtap_dump_close(pdh, &err)) {
4399 cf_close_failure_alert_box(fname, err);
4403 how_to_save = SAVE_WITH_WTAP;
4406 if (fname_new != NULL) {
4407 /* We wrote out to fname_new, and should rename it on top of
4408 fname. fname_new is now closed, so that should be possible even
4409 on Windows. However, on Windows, we first need to close whatever
4410 file descriptors we have open for fname. */
4412 wtap_fdclose(cf->wth);
4414 /* Now do the rename. */
4415 if (ws_rename(fname_new, fname) == -1) {
4416 /* Well, the rename failed. */
4417 cf_rename_failure_alert_box(fname, errno);
4419 /* Attempt to reopen the random file descriptor using the
4420 current file's filename. (At this point, the sequential
4421 file descriptor is closed.) */
4422 if (!wtap_fdreopen(cf->wth, cf->filename, &err)) {
4423 /* Oh, well, we're screwed. */
4424 display_basename = g_filename_display_basename(cf->filename);
4425 simple_error_message_box(
4426 file_open_error_message(err, FALSE), display_basename);
4427 g_free(display_basename);
4434 cf_callback_invoke(cf_cb_file_save_finished, NULL);
4435 cf->unsaved_changes = FALSE;
4438 switch (how_to_save) {
4440 case SAVE_WITH_MOVE:
4441 /* We just moved the file, so the wtap structure refers to the
4442 new file, and all the information other than the filename
4443 and the "is temporary" status applies to the new file; just
4445 g_free(cf->filename);
4446 cf->filename = g_strdup(fname);
4447 cf->is_tempfile = FALSE;
4448 cf_callback_invoke(cf_cb_file_fast_save_finished, cf);
4451 case SAVE_WITH_COPY:
4452 /* We just copied the file, s all the information other than
4453 the wtap structure, the filename, and the "is temporary"
4454 status applies to the new file; just update that. */
4455 wtap_close(cf->wth);
4456 cf->wth = wtap_open_offline(fname, &err, &err_info, TRUE);
4457 if (cf->wth == NULL) {
4458 cf_open_failure_alert_box(fname, err, err_info, FALSE, 0);
4461 g_free(cf->filename);
4462 cf->filename = g_strdup(fname);
4463 cf->is_tempfile = FALSE;
4465 cf_callback_invoke(cf_cb_file_fast_save_finished, cf);
4468 case SAVE_WITH_WTAP:
4469 /* Open and read the file we saved to.
4471 XXX - this is somewhat of a waste; we already have the
4472 packets, all this gets us is updated file type information
4473 (which we could just stuff into "cf"), and having the new
4474 file be the one we have opened and from which we're reading
4475 the data, and it means we have to spend time opening and
4476 reading the file, which could be a significant amount of
4477 time if the file is large.
4479 If the capture-file-writing code were to return the
4480 seek offset of each packet it writes, we could save that
4481 in the frame_data structure for the frame, and just open
4482 the file without reading it again...
4484 ...as long as, for gzipped files, the process of writing
4485 out the file *also* generates the information needed to
4486 support fast random access to the compressed file. */
4487 if (rescan_file(cf, fname, FALSE, &err) != CF_READ_OK) {
4488 /* The rescan failed; just close the file. Either
4489 a dialog was popped up for the failure, so the
4490 user knows what happened, or they stopped the
4491 rescan, in which case they know what happened. */
4497 /* If we were told to discard the comments, do so. */
4498 if (discard_comments) {
4499 /* Remove SHB comment, if any. */
4500 wtap_write_shb_comment(cf->wth, NULL);
4502 /* Remove packet comments. */
4503 for (framenum = 1; framenum <= cf->count; framenum++) {
4504 fdata = frame_data_sequence_find(cf->frames, framenum);
4505 if (fdata->opt_comment) {
4506 g_free(fdata->opt_comment);
4507 fdata->opt_comment = NULL;
4508 cf->packet_comment_count--;
4516 if (fname_new != NULL) {
4517 /* We were trying to write to a temporary file; get rid of it if it
4518 exists. (We don't care whether this fails, as, if it fails,
4519 there's not much we can do about it. I guess if it failed for
4520 a reason other than "it doesn't exist", we could report an
4521 error, so the user knows there's a junk file that they might
4522 want to clean up.) */
4523 ws_unlink(fname_new);
4526 cf_callback_invoke(cf_cb_file_save_failed, NULL);
4527 return CF_WRITE_ERROR;
4531 cf_export_specified_packets(capture_file *cf, const char *fname,
4532 packet_range_t *range, guint save_format,
4533 gboolean compressed)
4535 gchar *fname_new = NULL;
4538 save_callback_args_t callback_args;
4539 wtapng_section_t *shb_hdr;
4540 wtapng_iface_descriptions_t *idb_inf;
4543 cf_callback_invoke(cf_cb_file_export_specified_packets_started, (gpointer)fname);
4545 packet_range_process_init(range);
4547 /* We're writing out specified packets from the specified capture
4548 file to another file. Even if all captured packets are to be
4549 written, don't special-case the operation - read each packet
4550 and then write it out if it's one of the specified ones. */
4552 shb_hdr = wtap_file_get_shb_info(cf->wth);
4553 idb_inf = wtap_file_get_idb_info(cf->wth);
4555 /* Determine what file encapsulation type we should use. */
4556 encap = wtap_dump_file_encap_type(cf->linktypes);
4558 if (file_exists(fname)) {
4559 /* We're overwriting an existing file; write out to a new file,
4560 and, if that succeeds, rename the new file on top of the
4561 old file. That makes this a "safe save", so that we don't
4562 lose the old file if we have a problem writing out the new
4563 file. (If the existing file is the current capture file,
4564 we *HAVE* to do that, otherwise we're overwriting the file
4565 from which we're reading the packets that we're writing!) */
4566 fname_new = g_strdup_printf("%s~", fname);
4567 pdh = wtap_dump_open_ng(fname_new, save_format, encap, cf->snap,
4568 compressed, shb_hdr, idb_inf, &err);
4570 pdh = wtap_dump_open_ng(fname, save_format, encap, cf->snap,
4571 compressed, shb_hdr, idb_inf, &err);
4577 cf_open_failure_alert_box(fname, err, NULL, TRUE, save_format);
4581 /* Add address resolution */
4582 wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list());
4584 /* Iterate through the list of packets, processing the packets we were
4587 XXX - we've already called "packet_range_process_init(range)", but
4588 "process_specified_packets()" will do it again. Fortunately,
4589 that's harmless in this case, as we haven't done anything to
4590 "range" since we initialized it. */
4591 callback_args.pdh = pdh;
4592 callback_args.fname = fname;
4593 callback_args.file_type = save_format;
4594 switch (process_specified_packets(cf, range, "Writing", "specified packets",
4595 TRUE, save_packet, &callback_args)) {
4598 /* Completed successfully. */
4602 /* The user decided to abort the saving.
4603 If we're writing to a temporary file, remove it.
4604 XXX - should we do so even if we're not writing to a
4606 wtap_dump_close(pdh, &err);
4607 if (fname_new != NULL)
4608 ws_unlink(fname_new);
4609 cf_callback_invoke(cf_cb_file_export_specified_packets_stopped, NULL);
4610 return CF_WRITE_ABORTED;
4614 /* Error while saving.
4615 If we're writing to a temporary file, remove it. */
4616 if (fname_new != NULL)
4617 ws_unlink(fname_new);
4618 wtap_dump_close(pdh, &err);
4622 if (!wtap_dump_close(pdh, &err)) {
4623 cf_close_failure_alert_box(fname, err);
4627 if (fname_new != NULL) {
4628 /* We wrote out to fname_new, and should rename it on top of
4629 fname; fname is now closed, so that should be possible even
4630 on Windows. Do the rename. */
4631 if (ws_rename(fname_new, fname) == -1) {
4632 /* Well, the rename failed. */
4633 cf_rename_failure_alert_box(fname, errno);
4638 cf_callback_invoke(cf_cb_file_export_specified_packets_finished, NULL);
4642 if (fname_new != NULL) {
4643 /* We were trying to write to a temporary file; get rid of it if it
4644 exists. (We don't care whether this fails, as, if it fails,
4645 there's not much we can do about it. I guess if it failed for
4646 a reason other than "it doesn't exist", we could report an
4647 error, so the user knows there's a junk file that they might
4648 want to clean up.) */
4649 ws_unlink(fname_new);
4652 cf_callback_invoke(cf_cb_file_export_specified_packets_failed, NULL);
4653 return CF_WRITE_ERROR;
4657 cf_open_failure_alert_box(const char *filename, int err, gchar *err_info,
4658 gboolean for_writing, int file_type)
4660 gchar *display_basename;
4663 /* Wiretap error. */
4664 display_basename = g_filename_display_basename(filename);
4667 case WTAP_ERR_NOT_REGULAR_FILE:
4668 simple_error_message_box(
4669 "The file \"%s\" is a \"special file\" or socket or other non-regular file.",
4673 case WTAP_ERR_RANDOM_OPEN_PIPE:
4674 /* Seen only when opening a capture file for reading. */
4675 simple_error_message_box(
4676 "The file \"%s\" is a pipe or FIFO; Wireshark can't read pipe or FIFO files.\n"
4677 "To capture from a pipe or FIFO use wireshark -i -",
4681 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
4682 /* Seen only when opening a capture file for reading. */
4683 simple_error_message_box(
4684 "The file \"%s\" isn't a capture file in a format Wireshark understands.",
4688 case WTAP_ERR_UNSUPPORTED:
4689 /* Seen only when opening a capture file for reading. */
4690 simple_error_message_box(
4691 "The file \"%s\" isn't a capture file in a format Wireshark understands.\n"
4693 display_basename, err_info);
4697 case WTAP_ERR_CANT_WRITE_TO_PIPE:
4698 /* Seen only when opening a capture file for writing. */
4699 simple_error_message_box(
4700 "The file \"%s\" is a pipe, and %s capture files can't be "
4701 "written to a pipe.",
4702 display_basename, wtap_file_type_string(file_type));
4705 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
4706 /* Seen only when opening a capture file for writing. */
4707 simple_error_message_box(
4708 "Wireshark doesn't support writing capture files in that format.");
4711 case WTAP_ERR_UNSUPPORTED_ENCAP:
4713 simple_error_message_box("Wireshark can't save this capture in that format.");
4715 simple_error_message_box(
4716 "The file \"%s\" is a capture for a network type that Wireshark doesn't support.\n"
4718 display_basename, err_info);
4723 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
4725 simple_error_message_box(
4726 "Wireshark can't save this capture in that format.");
4728 simple_error_message_box(
4729 "The file \"%s\" is a capture for a network type that Wireshark doesn't support.",
4734 case WTAP_ERR_BAD_FILE:
4735 /* Seen only when opening a capture file for reading. */
4736 simple_error_message_box(
4737 "The file \"%s\" appears to be damaged or corrupt.\n"
4739 display_basename, err_info);
4743 case WTAP_ERR_CANT_OPEN:
4745 simple_error_message_box(
4746 "The file \"%s\" could not be created for some unknown reason.",
4749 simple_error_message_box(
4750 "The file \"%s\" could not be opened for some unknown reason.",
4755 case WTAP_ERR_SHORT_READ:
4756 simple_error_message_box(
4757 "The file \"%s\" appears to have been cut short"
4758 " in the middle of a packet or other data.",
4762 case WTAP_ERR_SHORT_WRITE:
4763 simple_error_message_box(
4764 "A full header couldn't be written to the file \"%s\".",
4768 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
4769 simple_error_message_box(
4770 "This file type cannot be written as a compressed file.");
4773 case WTAP_ERR_DECOMPRESS:
4774 simple_error_message_box(
4775 "The compressed file \"%s\" appears to be damaged or corrupt.\n"
4776 "(%s)", display_basename, err_info);
4781 simple_error_message_box(
4782 "The file \"%s\" could not be %s: %s.",
4784 for_writing ? "created" : "opened",
4785 wtap_strerror(err));
4788 g_free(display_basename);
4791 open_failure_alert_box(filename, err, for_writing);
4796 * XXX - whether we mention the source pathname, the target pathname,
4797 * or both depends on the error and on what we find if we look for
4798 * one or both of them.
4801 cf_rename_failure_alert_box(const char *filename, int err)
4803 gchar *display_basename;
4805 display_basename = g_filename_display_basename(filename);
4809 /* XXX - should check whether the source exists and, if not,
4810 report it as the problem and, if so, report the destination
4812 simple_error_message_box("The path to the file \"%s\" doesn't exist.",
4817 /* XXX - if we're doing a rename after a safe save, we should
4818 probably say something else. */
4819 simple_error_message_box("You don't have permission to move the capture file to \"%s\".",
4824 /* XXX - this should probably mention both the source and destination
4826 simple_error_message_box("The file \"%s\" could not be moved: %s.",
4827 display_basename, wtap_strerror(err));
4830 g_free(display_basename);
4833 /* Check for write errors - if the file is being written to an NFS server,
4834 a write error may not show up until the file is closed, as NFS clients
4835 might not send writes to the server until the "write()" call finishes,
4836 so that the write may fail on the server but the "write()" may succeed. */
4838 cf_close_failure_alert_box(const char *filename, int err)
4840 gchar *display_basename;
4843 /* Wiretap error. */
4844 display_basename = g_filename_display_basename(filename);
4847 case WTAP_ERR_CANT_CLOSE:
4848 simple_error_message_box(
4849 "The file \"%s\" couldn't be closed for some unknown reason.",
4853 case WTAP_ERR_SHORT_WRITE:
4854 simple_error_message_box(
4855 "Not all the packets could be written to the file \"%s\".",
4860 simple_error_message_box(
4861 "An error occurred while closing the file \"%s\": %s.",
4862 display_basename, wtap_strerror(err));
4865 g_free(display_basename);
4868 We assume that a close error from the OS is really a write error. */
4869 write_failure_alert_box(filename, err);
4873 /* Reload the current capture file. */
4875 cf_reload(capture_file *cf) {
4877 gboolean is_tempfile;
4880 /* If the file could be opened, "cf_open()" calls "cf_close()"
4881 to get rid of state for the old capture file before filling in state
4882 for the new capture file. "cf_close()" will remove the file if
4883 it's a temporary file; we don't want that to happen (for one thing,
4884 it'd prevent subsequent reopens from working). Remember whether it's
4885 a temporary file, mark it as not being a temporary file, and then
4886 reopen it as the type of file it was.
4888 Also, "cf_close()" will free "cf->filename", so we must make
4889 a copy of it first. */
4890 filename = g_strdup(cf->filename);
4891 is_tempfile = cf->is_tempfile;
4892 cf->is_tempfile = FALSE;
4893 if (cf_open(cf, filename, is_tempfile, &err) == CF_OK) {
4894 switch (cf_read(cf, TRUE)) {
4898 /* Just because we got an error, that doesn't mean we were unable
4899 to read any of the file; we handle what we could get from the
4903 case CF_READ_ABORTED:
4904 /* The user bailed out of re-reading the capture file; the
4905 capture file has been closed - just free the capture file name
4906 string and return (without changing the last containing
4912 /* The open failed, so "cf->is_tempfile" wasn't set to "is_tempfile".
4913 Instead, the file was left open, so we should restore "cf->is_tempfile"
4916 XXX - change the menu? Presumably "cf_open()" will do that;
4917 make sure it does! */
4918 cf->is_tempfile = is_tempfile;
4920 /* "cf_open()" made a copy of the file name we handed it, so
4921 we should free up our copy. */
4931 * indent-tabs-mode: nil
4934 * ex: set shiftwidth=2 tabstop=8 expandtab:
4935 * :indentSize=2:tabSize=8:noTabs=true: