6 * Wireshark - Network traffic analyzer
7 * By Gerald Combs <gerald@wireshark.org>
8 * Copyright 1998 Gerald Combs
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version 2
13 * of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
44 #include <epan/epan.h>
45 #include <epan/filesystem.h>
48 #include "color_filters.h"
50 #include <epan/column.h>
51 #include <epan/packet.h>
52 #include <epan/column-utils.h>
53 #include "packet-range.h"
60 #include <epan/prefs.h>
61 #include <epan/dfilter/dfilter.h>
62 #include <epan/epan_dissect.h>
64 #include <epan/dissectors/packet-data.h>
65 #include <epan/dissectors/packet-ber.h>
66 #include <epan/timestamp.h>
67 #include <epan/dfilter/dfilter-macro.h>
68 #include <wsutil/file_util.h>
69 #include <epan/strutil.h>
70 #include <epan/addr_resolv.h>
72 #include "ui/alert_box.h"
73 #include "ui/simple_dialog.h"
74 #include "ui/main_statusbar.h"
75 #include "ui/progress_dlg.h"
76 #include "ui/ui_util.h"
79 gboolean auto_scroll_live;
82 static guint32 cum_bytes;
83 static nstime_t first_ts;
84 static frame_data *prev_dis;
85 static frame_data *prev_cap;
87 static gulong computed_elapsed;
89 static void cf_reset_state(capture_file *cf);
91 static int read_packet(capture_file *cf, dfilter_t *dfcode,
92 gboolean filtering_tap_listeners, guint tap_flags, gint64 offset);
94 static void rescan_packets(capture_file *cf, const char *action, const char *action_item,
95 gboolean refilter, gboolean redissect);
102 static match_result match_protocol_tree(capture_file *cf, frame_data *fdata,
104 static void match_subtree_text(proto_node *node, gpointer data);
105 static match_result match_summary_line(capture_file *cf, frame_data *fdata,
107 static match_result match_ascii_and_unicode(capture_file *cf, frame_data *fdata,
109 static match_result match_ascii(capture_file *cf, frame_data *fdata,
111 static match_result match_unicode(capture_file *cf, frame_data *fdata,
113 static match_result match_binary(capture_file *cf, frame_data *fdata,
115 static match_result match_dfilter(capture_file *cf, frame_data *fdata,
117 static match_result match_marked(capture_file *cf, frame_data *fdata,
119 static match_result match_time_reference(capture_file *cf, frame_data *fdata,
121 static gboolean find_packet(capture_file *cf,
122 match_result (*match_function)(capture_file *, frame_data *, void *),
123 void *criterion, search_direction dir);
125 static void cf_open_failure_alert_box(const char *filename, int err,
126 gchar *err_info, gboolean for_writing,
128 static void cf_rename_failure_alert_box(const char *filename, int err);
129 static void cf_close_failure_alert_box(const char *filename, int err);
130 static void ref_time_packets(capture_file *cf);
131 /* Update the progress bar this many times when reading a file. */
132 #define N_PROGBAR_UPDATES 100
133 /* We read around 200k/100ms don't update the progress bar more often than that */
134 #define MIN_QUANTUM 200000
135 #define MIN_NUMBER_OF_PACKET 1500
138 * We could probably use g_signal_...() instead of the callbacks below but that
139 * would require linking our CLI programs to libgobject and creating an object
140 * instance for the signals.
143 cf_callback_t cb_fct;
145 } cf_callback_data_t;
147 static GList *cf_callbacks = NULL;
150 cf_callback_invoke(int event, gpointer data)
152 cf_callback_data_t *cb;
153 GList *cb_item = cf_callbacks;
155 /* there should be at least one interested */
156 g_assert(cb_item != NULL);
158 while (cb_item != NULL) {
160 cb->cb_fct(event, data, cb->user_data);
161 cb_item = g_list_next(cb_item);
167 cf_callback_add(cf_callback_t func, gpointer user_data)
169 cf_callback_data_t *cb;
171 cb = g_malloc(sizeof(cf_callback_data_t));
173 cb->user_data = user_data;
175 cf_callbacks = g_list_append(cf_callbacks, cb);
179 cf_callback_remove(cf_callback_t func)
181 cf_callback_data_t *cb;
182 GList *cb_item = cf_callbacks;
184 while (cb_item != NULL) {
186 if (cb->cb_fct == func) {
187 cf_callbacks = g_list_remove(cf_callbacks, cb);
191 cb_item = g_list_next(cb_item);
194 g_assert_not_reached();
198 cf_timestamp_auto_precision(capture_file *cf)
201 int prec = timestamp_get_precision();
204 /* don't try to get the file's precision if none is opened */
205 if (cf->state == FILE_CLOSED) {
209 /* if we are in auto mode, set precision of current file */
210 if (prec == TS_PREC_AUTO ||
211 prec == TS_PREC_AUTO_SEC ||
212 prec == TS_PREC_AUTO_DSEC ||
213 prec == TS_PREC_AUTO_CSEC ||
214 prec == TS_PREC_AUTO_MSEC ||
215 prec == TS_PREC_AUTO_USEC ||
216 prec == TS_PREC_AUTO_NSEC)
218 switch(wtap_file_tsprecision(cf->wth)) {
219 case(WTAP_FILE_TSPREC_SEC):
220 timestamp_set_precision(TS_PREC_AUTO_SEC);
222 case(WTAP_FILE_TSPREC_DSEC):
223 timestamp_set_precision(TS_PREC_AUTO_DSEC);
225 case(WTAP_FILE_TSPREC_CSEC):
226 timestamp_set_precision(TS_PREC_AUTO_CSEC);
228 case(WTAP_FILE_TSPREC_MSEC):
229 timestamp_set_precision(TS_PREC_AUTO_MSEC);
231 case(WTAP_FILE_TSPREC_USEC):
232 timestamp_set_precision(TS_PREC_AUTO_USEC);
234 case(WTAP_FILE_TSPREC_NSEC):
235 timestamp_set_precision(TS_PREC_AUTO_NSEC);
238 g_assert_not_reached();
241 /* Set the column widths of those columns that show the time in
242 "command-line-specified" format. */
243 for (i = 0; i < cf->cinfo.num_cols; i++) {
244 if (col_has_time_fmt(&cf->cinfo, i)) {
245 packet_list_resize_column(i);
251 cf_get_computed_elapsed(void)
253 return computed_elapsed;
256 static void reset_elapsed(void)
258 computed_elapsed = 0;
262 * GLIB_CHECK_VERSION(2,28,0) adds g_get_real_time which could minimize or
265 static void compute_elapsed(GTimeVal *start_time)
270 g_get_current_time(&time_now);
272 delta_time = (time_now.tv_sec - start_time->tv_sec) * 1e6 +
273 time_now.tv_usec - start_time->tv_usec;
275 computed_elapsed = (gulong) (delta_time / 1000); /* ms */
279 cf_open(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
284 wth = wtap_open_offline(fname, err, &err_info, TRUE);
288 /* The open succeeded. Close whatever capture file we had open,
289 and fill in the information for this file. */
292 /* Cleanup all data structures used for dissection. */
293 cleanup_dissection();
294 /* Initialize all data structures used for dissection. */
297 /* We're about to start reading the file. */
298 cf->state = FILE_READ_IN_PROGRESS;
303 /* Set the file name because we need it to set the follow stream filter.
304 XXX - is that still true? We need it for other reasons, though,
306 cf->filename = g_strdup(fname);
308 /* Indicate whether it's a permanent or temporary file. */
309 cf->is_tempfile = is_tempfile;
311 /* No user changes yet. */
312 cf->unsaved_changes = FALSE;
316 cf->cd_t = wtap_file_type(cf->wth);
317 cf->linktypes = g_array_sized_new(FALSE, FALSE, (guint) sizeof(int), 1);
319 cf->packet_comment_count = 0;
320 cf->displayed_count = 0;
321 cf->marked_count = 0;
322 cf->ignored_count = 0;
323 cf->ref_time_count = 0;
324 cf->drops_known = FALSE;
326 cf->snap = wtap_snapshot_length(cf->wth);
328 /* Snapshot length not known. */
329 cf->has_snap = FALSE;
330 cf->snap = WTAP_MAX_PACKET_SIZE;
334 /* Allocate a frame_data_sequence for the frames in this file */
335 cf->frames = new_frame_data_sequence();
337 nstime_set_zero(&cf->elapsed_time);
338 nstime_set_unset(&first_ts);
343 /* Adjust timestamp precision if auto is selected, col width will be adjusted */
344 cf_timestamp_auto_precision(cf);
346 packet_list_queue_draw();
347 cf_callback_invoke(cf_cb_file_opened, cf);
349 if (cf->cd_t == WTAP_FILE_BER) {
350 /* tell the BER dissector the file name */
351 ber_set_filename(cf->filename);
354 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
355 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
360 cf_open_failure_alert_box(fname, *err, err_info, FALSE, 0);
365 * Add an encapsulation type to cf->linktypes.
368 cf_add_encapsulation_type(capture_file *cf, int encap)
372 for (i = 0; i < cf->linktypes->len; i++) {
373 if (g_array_index(cf->linktypes, gint, i) == encap)
374 return; /* it's already there */
376 /* It's not already there - add it. */
377 g_array_append_val(cf->linktypes, encap);
381 * Reset the state for the currently closed file, but don't do the
382 * UI callbacks; this is for use in "cf_open()", where we don't
383 * want the UI to go from "file open" to "file closed" back to
384 * "file open", we want it to go from "old file open" to "new file
385 * open and being read".
387 * XXX - currently, cf_open() calls cf_close(), rather than
391 cf_reset_state(capture_file *cf)
393 /* Die if we're in the middle of reading a file. */
394 g_assert(cf->state != FILE_READ_IN_PROGRESS);
400 /* We have no file open... */
401 if (cf->filename != NULL) {
402 /* If it's a temporary file, remove it. */
404 ws_unlink(cf->filename);
405 g_free(cf->filename);
408 /* ...which means we have no changes to that file to save. */
409 cf->unsaved_changes = FALSE;
411 dfilter_free(cf->rfcode);
413 if (cf->frames != NULL) {
414 free_frame_data_sequence(cf->frames);
417 #ifdef WANT_PACKET_EDITOR
418 if (cf->edited_frames) {
419 g_tree_destroy(cf->edited_frames);
420 cf->edited_frames = NULL;
423 cf_unselect_packet(cf); /* nothing to select */
424 cf->first_displayed = 0;
425 cf->last_displayed = 0;
427 /* No frames, no frame selected, no field in that frame selected. */
429 cf->current_frame = 0;
431 cf->finfo_selected = NULL;
433 /* No frame link-layer types, either. */
434 g_array_free(cf->linktypes, TRUE);
435 cf->linktypes = NULL;
437 /* Clear the packet list. */
438 packet_list_freeze();
443 nstime_set_zero(&cf->elapsed_time);
445 reset_tap_listeners();
447 /* We have no file open. */
448 cf->state = 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\" (\"%s\")",
866 wtap_strerror(*err), err_info, cf->filename);
869 return CF_READ_ERROR;
875 cf_fake_continue_tail(capture_file *cf) {
876 cf->state = FILE_READ_DONE;
880 cf_finish_tail(capture_file *cf, int *err)
885 gboolean filtering_tap_listeners;
889 /* Compile the current display filter.
890 * We assume this will not fail since cf->dfilter is only set in
891 * cf_filter IFF the filter was valid.
893 compiled = dfilter_compile(cf->dfilter, &dfcode);
894 g_assert(!cf->dfilter || (compiled && dfcode));
896 /* Do we have any tap listeners with filters? */
897 filtering_tap_listeners = have_filtering_tap_listeners();
899 /* Get the union of the flags for all tap listeners. */
900 tap_flags = union_of_tap_listener_flags();
902 if (cf->wth == NULL) {
904 return CF_READ_ERROR;
907 packet_list_check_end();
908 /* Don't freeze/thaw the list when doing live capture */
909 /*packet_list_freeze();*/
911 while ((wtap_read(cf->wth, err, &err_info, &data_offset))) {
912 if (cf->state == FILE_READ_ABORTED) {
913 /* Well, the user decided to abort the read. Break out of the
914 loop, and let the code below (which is called even if there
915 aren't any packets left to read) exit. */
918 read_packet(cf, dfcode, filtering_tap_listeners, tap_flags, data_offset);
921 /* Cleanup and release all dfilter resources */
922 if (dfcode != NULL) {
923 dfilter_free(dfcode);
926 /* Don't freeze/thaw the list when doing live capture */
927 /*packet_list_thaw();*/
929 if (cf->state == FILE_READ_ABORTED) {
930 /* Well, the user decided to abort the read. We're only called
931 when the child capture process closes the pipe to us (meaning
932 it's probably exited), so we can just close the capture
933 file; we return CF_READ_ABORTED so our caller can do whatever
934 is appropriate when that happens. */
936 return CF_READ_ABORTED;
939 if (auto_scroll_live && cf->count != 0)
940 packet_list_moveto_end();
942 /* We're done reading sequentially through the file. */
943 cf->state = FILE_READ_DONE;
945 /* We're done reading sequentially through the file; close the
946 sequential I/O side, to free up memory it requires. */
947 wtap_sequential_close(cf->wth);
949 /* Allow the protocol dissectors to free up memory that they
950 * don't need after the sequential run-through of the packets. */
951 postseq_cleanup_all_protocols();
953 /* Update the file encapsulation; it might have changed based on the
954 packets we've read. */
955 cf->lnk_t = wtap_file_encap(cf->wth);
957 /* Update the details in the file-set dialog, as the capture file
958 * has likely grown since we first stat-ed it */
959 fileset_update_file(cf->filename);
962 /* We got an error reading the capture file.
963 XXX - pop up a dialog box? */
965 g_warning("Error \"%s\" while reading: \"%s\" (\"%s\")",
966 wtap_strerror(*err), err_info, cf->filename);
968 return CF_READ_ERROR;
973 #endif /* HAVE_LIBPCAP */
976 cf_get_display_name(capture_file *cf)
980 /* Return a name to use in displays */
981 if (!cf->is_tempfile) {
982 /* Get the last component of the file name, and use that. */
984 displayname = g_filename_display_basename(cf->filename);
986 displayname=g_strdup("(No file)");
989 /* The file we read is a temporary file from a live capture or
990 a merge operation; we don't mention its name, but, if it's
991 from a capture, give the source of the capture. */
993 displayname = g_strdup(cf->source);
995 displayname = g_strdup("(Untitled)");
1001 void cf_set_tempfile_source(capture_file *cf, gchar *source) {
1007 cf->source = g_strdup(source);
1009 cf->source = g_strdup("");
1013 const gchar *cf_get_tempfile_source(capture_file *cf) {
1021 /* XXX - use a macro instead? */
1023 cf_get_packet_count(capture_file *cf)
1028 /* XXX - use a macro instead? */
1030 cf_set_packet_count(capture_file *cf, int packet_count)
1032 cf->count = packet_count;
1035 /* XXX - use a macro instead? */
1037 cf_is_tempfile(capture_file *cf)
1039 return cf->is_tempfile;
1042 void cf_set_tempfile(capture_file *cf, gboolean is_tempfile)
1044 cf->is_tempfile = is_tempfile;
1048 /* XXX - use a macro instead? */
1049 void cf_set_drops_known(capture_file *cf, gboolean drops_known)
1051 cf->drops_known = drops_known;
1054 /* XXX - use a macro instead? */
1055 void cf_set_drops(capture_file *cf, guint32 drops)
1060 /* XXX - use a macro instead? */
1061 gboolean cf_get_drops_known(capture_file *cf)
1063 return cf->drops_known;
1066 /* XXX - use a macro instead? */
1067 guint32 cf_get_drops(capture_file *cf)
1072 void cf_set_rfcode(capture_file *cf, dfilter_t *rfcode)
1074 cf->rfcode = rfcode;
1078 find_and_mark_frame_depended_upon(gpointer data, gpointer user_data)
1080 frame_data *dependent_fd;
1081 guint32 dependent_frame = GPOINTER_TO_UINT(data);
1082 capture_file *cf = (capture_file *)user_data;
1084 dependent_fd = frame_data_sequence_find(cf->frames, dependent_frame);
1085 dependent_fd->flags.dependent_of_displayed = 1;
1089 add_packet_to_packet_list(frame_data *fdata, capture_file *cf,
1090 dfilter_t *dfcode, gboolean filtering_tap_listeners,
1092 union wtap_pseudo_header *pseudo_header, const guchar *buf,
1094 gboolean add_to_packet_list)
1096 gboolean create_proto_tree = FALSE;
1101 cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
1103 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
1104 &first_ts, prev_dis, prev_cap);
1108 + we have a display filter and are re-applying it;
1109 + we have tap listeners with filters;
1110 + we have tap listeners that require a protocol tree;
1112 allocate a protocol tree root node, so that we'll construct
1113 a protocol tree against which a filter expression can be
1115 if ((dfcode != NULL && refilter) ||
1116 filtering_tap_listeners || (tap_flags & TL_REQUIRES_PROTO_TREE))
1117 create_proto_tree = TRUE;
1119 /* Dissect the frame. */
1120 epan_dissect_init(&edt, create_proto_tree, FALSE);
1122 if (dfcode != NULL && refilter) {
1123 epan_dissect_prime_dfilter(&edt, dfcode);
1126 tap_queue_init(&edt);
1127 epan_dissect_run(&edt, pseudo_header, buf, fdata, cinfo);
1128 tap_push_tapped_queue(&edt);
1130 /* If we have a display filter, apply it if we're refiltering, otherwise
1131 leave the "passed_dfilter" flag alone.
1133 If we don't have a display filter, set "passed_dfilter" to 1. */
1134 if (dfcode != NULL) {
1136 fdata->flags.passed_dfilter = dfilter_apply_edt(dfcode, &edt) ? 1 : 0;
1138 if (fdata->flags.passed_dfilter) {
1139 /* This frame passed the display filter but it may depend on other
1140 * (potentially not displayed) frames. Find those frames and mark them
1143 g_slist_foreach(edt.pi.dependent_frames, find_and_mark_frame_depended_upon, cf);
1147 fdata->flags.passed_dfilter = 1;
1149 if (fdata->flags.passed_dfilter || fdata->flags.ref_time)
1150 cf->displayed_count++;
1152 if (add_to_packet_list) {
1153 /* We fill the needed columns from new_packet_list */
1154 row = packet_list_append(cinfo, fdata, &edt.pi);
1157 if (fdata->flags.passed_dfilter || fdata->flags.ref_time)
1159 frame_data_set_after_dissect(fdata, &cum_bytes);
1162 /* If we haven't yet seen the first frame, this is it.
1164 XXX - we must do this before we add the row to the display,
1165 as, if the display's GtkCList's selection mode is
1166 GTK_SELECTION_BROWSE, when the first entry is added to it,
1167 "cf_select_packet()" will be called, and it will fetch the row
1168 data for the 0th row, and will get a null pointer rather than
1169 "fdata", as "gtk_clist_append()" won't yet have returned and
1170 thus "gtk_clist_set_row_data()" won't yet have been called.
1172 We thus need to leave behind bread crumbs so that
1173 "cf_select_packet()" can find this frame. See the comment
1174 in "cf_select_packet()". */
1175 if (cf->first_displayed == 0)
1176 cf->first_displayed = fdata->num;
1178 /* This is the last frame we've seen so far. */
1179 cf->last_displayed = fdata->num;
1182 epan_dissect_cleanup(&edt);
1186 /* read in a new packet */
1187 /* returns the row of the new packet in the packet list or -1 if not displayed */
1189 read_packet(capture_file *cf, dfilter_t *dfcode,
1190 gboolean filtering_tap_listeners, guint tap_flags, gint64 offset)
1192 const struct wtap_pkthdr *phdr = wtap_phdr(cf->wth);
1193 union wtap_pseudo_header *pseudo_header = wtap_pseudoheader(cf->wth);
1194 const guchar *buf = wtap_buf_ptr(cf->wth);
1201 /* Add this packet's link-layer encapsulation type to cf->linktypes, if
1202 it's not already there.
1203 XXX - yes, this is O(N), so if every packet had a different
1204 link-layer encapsulation type, it'd be O(N^2) to read the file, but
1205 there are probably going to be a small number of encapsulation types
1207 cf_add_encapsulation_type(cf, phdr->pkt_encap);
1209 /* The frame number of this packet is one more than the count of
1210 frames in the file so far. */
1211 framenum = cf->count + 1;
1213 frame_data_init(&fdlocal, framenum, phdr, offset, cum_bytes);
1218 epan_dissect_init(&edt, TRUE, FALSE);
1219 epan_dissect_prime_dfilter(&edt, cf->rfcode);
1220 epan_dissect_run(&edt, pseudo_header, buf, &fdlocal, NULL);
1221 passed = dfilter_apply_edt(cf->rfcode, &edt);
1222 epan_dissect_cleanup(&edt);
1226 /* This does a shallow copy of fdlocal, which is good enough. */
1227 fdata = frame_data_sequence_add(cf->frames, &fdlocal);
1230 if (fdlocal.opt_comment != NULL)
1231 cf->packet_comment_count++;
1232 cf->f_datalen = offset + fdlocal.cap_len;
1234 if (!cf->redissecting) {
1235 row = add_packet_to_packet_list(fdata, cf, dfcode,
1236 filtering_tap_listeners, tap_flags,
1237 pseudo_header, buf, TRUE, TRUE);
1245 cf_merge_files(char **out_filenamep, int in_file_count,
1246 char *const *in_filenames, int file_type, gboolean do_append)
1248 merge_in_file_t *in_files, *in_file;
1253 int open_err, read_err, write_err, close_err;
1257 gboolean got_read_error = FALSE, got_write_error = FALSE;
1259 progdlg_t *progbar = NULL;
1261 gint64 f_len, file_pos;
1263 GTimeVal start_time;
1264 gchar status_str[100];
1265 gint64 progbar_nextstep;
1266 gint64 progbar_quantum;
1267 gchar *display_basename;
1268 int selected_frame_type;
1269 gboolean fake_interface_ids = FALSE;
1271 /* open the input files */
1272 if (!merge_open_in_files(in_file_count, in_filenames, &in_files,
1273 &open_err, &err_info, &err_fileno)) {
1275 cf_open_failure_alert_box(in_filenames[err_fileno], open_err, err_info,
1280 if (*out_filenamep != NULL) {
1281 out_filename = *out_filenamep;
1282 out_fd = ws_open(out_filename, O_CREAT|O_TRUNC|O_BINARY, 0600);
1286 out_fd = create_tempfile(&tmpname, "wireshark");
1289 out_filename = g_strdup(tmpname);
1290 *out_filenamep = out_filename;
1294 merge_close_in_files(in_file_count, in_files);
1296 cf_open_failure_alert_box(out_filename, open_err, NULL, TRUE, file_type);
1300 selected_frame_type = merge_select_frame_type(in_file_count, in_files);
1302 /* If we are trying to merge a number of libpcap files with different encapsulation types
1303 * change the output file type to pcapng and create SHB and IDB:s for the new file use the
1304 * interface index stored in in_files per file to change the phdr before writing the datablock.
1305 * XXX should it be an option to convert to pcapng?
1307 * We need something similar when merging pcapng files possibly with an option to say
1308 * the same interface(s) used in all in files. SHBs comments should be merged together.
1310 if ((selected_frame_type == WTAP_ENCAP_PER_PACKET)&&(file_type == WTAP_FILE_PCAP)) {
1311 /* Write output in pcapng format */
1312 wtapng_section_t *shb_hdr;
1313 wtapng_iface_descriptions_t *idb_inf, *idb_inf_merge_file;
1314 wtapng_if_descr_t int_data, *file_int_data;
1315 GString *comment_gstr;
1318 fake_interface_ids = TRUE;
1319 /* Create SHB info */
1320 shb_hdr = wtap_file_get_shb_info(in_files[0].wth);
1321 comment_gstr = g_string_new("");
1322 g_string_append_printf(comment_gstr, "%s \n",shb_hdr->opt_comment);
1323 g_string_append_printf(comment_gstr, "File created by merging: \n");
1324 file_type = WTAP_FILE_PCAPNG;
1326 for (i = 0; i < in_file_count; i++) {
1327 g_string_append_printf(comment_gstr, "File%d: %s \n",i+1,in_files[i].filename);
1329 shb_hdr->section_length = -1;
1331 shb_hdr->opt_comment = g_string_free(comment_gstr, FALSE); /* NULL if not available */
1332 shb_hdr->shb_hardware = NULL; /* NULL if not available, UTF-8 string containing the */
1333 /* description of the hardware used to create this section. */
1334 shb_hdr->shb_os = NULL; /* NULL if not available, UTF-8 string containing the name */
1335 /* of the operating system used to create this section. */
1336 shb_hdr->shb_user_appl = "Wireshark"; /* NULL if not available, UTF-8 string containing the name */
1337 /* of the application used to create this section. */
1339 /* create fake IDB info */
1340 idb_inf = g_new(wtapng_iface_descriptions_t,1);
1341 idb_inf->number_of_interfaces = in_file_count; /* TODO make this the number of DIFFERENT encapsulation types
1342 * check that snaplength is the same too?
1344 idb_inf->interface_data = g_array_new(FALSE, FALSE, sizeof(wtapng_if_descr_t));
1346 for (i = 0; i < in_file_count; i++) {
1347 idb_inf_merge_file = wtap_file_get_idb_info(in_files[i].wth);
1348 /* read the interface data from the in file to our combined interfca data */
1349 file_int_data = &g_array_index (idb_inf_merge_file->interface_data, wtapng_if_descr_t, 0);
1350 int_data.wtap_encap = file_int_data->wtap_encap;
1351 int_data.time_units_per_second = file_int_data->time_units_per_second;
1352 int_data.link_type = file_int_data->link_type;
1353 int_data.snap_len = file_int_data->snap_len;
1354 int_data.if_name = g_strdup(file_int_data->if_name);
1355 int_data.opt_comment = NULL;
1356 int_data.if_description = NULL;
1357 int_data.if_speed = 0;
1358 int_data.if_tsresol = 6;
1359 int_data.if_filter_str = NULL;
1360 int_data.bpf_filter_len = 0;
1361 int_data.if_filter_bpf_bytes = NULL;
1362 int_data.if_os = NULL;
1363 int_data.if_fcslen = -1;
1364 int_data.num_stat_entries = 0; /* Number of ISB:s */
1365 int_data.interface_statistics = NULL;
1367 g_array_append_val(idb_inf->interface_data, int_data);
1368 g_free(idb_inf_merge_file);
1370 /* Set fake interface Id in per file data */
1371 in_files[i].interface_id = i;
1374 pdh = wtap_dump_fdopen_ng(out_fd, file_type,
1375 selected_frame_type,
1376 merge_max_snapshot_length(in_file_count, in_files),
1377 FALSE /* compressed */, shb_hdr, idb_inf /* wtapng_iface_descriptions_t *idb_inf */, &open_err);
1381 merge_close_in_files(in_file_count, in_files);
1383 cf_open_failure_alert_box(out_filename, open_err, err_info, TRUE,
1390 pdh = wtap_dump_fdopen(out_fd, file_type,
1391 selected_frame_type,
1392 merge_max_snapshot_length(in_file_count, in_files),
1393 FALSE /* compressed */, &open_err);
1396 merge_close_in_files(in_file_count, in_files);
1398 cf_open_failure_alert_box(out_filename, open_err, err_info, TRUE,
1404 /* Get the sum of the sizes of all the files. */
1406 for (i = 0; i < in_file_count; i++)
1407 f_len += in_files[i].size;
1409 /* Update the progress bar when it gets to this value. */
1410 progbar_nextstep = 0;
1411 /* When we reach the value that triggers a progress bar update,
1412 bump that value by this amount. */
1413 progbar_quantum = f_len/N_PROGBAR_UPDATES;
1414 /* Progress so far. */
1418 g_get_current_time(&start_time);
1420 /* do the merge (or append) */
1423 in_file = merge_append_read_packet(in_file_count, in_files, &read_err,
1426 in_file = merge_read_packet(in_file_count, in_files, &read_err,
1428 if (in_file == NULL) {
1433 if (read_err != 0) {
1434 /* I/O error reading from in_file */
1435 got_read_error = TRUE;
1439 /* Get the sum of the data offsets in all of the files. */
1441 for (i = 0; i < in_file_count; i++)
1442 data_offset += in_files[i].data_offset;
1444 /* Create the progress bar if necessary.
1445 We check on every iteration of the loop, so that it takes no
1446 longer than the standard time to create it (otherwise, for a
1447 large file, we might take considerably longer than that standard
1448 time in order to get to the next progress bar step). */
1449 if (progbar == NULL) {
1450 progbar = delayed_create_progress_dlg(NULL, "Merging", "files",
1451 FALSE, &stop_flag, &start_time, progbar_val);
1454 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
1455 when we update it, we have to run the GTK+ main loop to get it
1456 to repaint what's pending, and doing so may involve an "ioctl()"
1457 to see if there's any pending input from an X server, and doing
1458 that for every packet can be costly, especially on a big file. */
1459 if (data_offset >= progbar_nextstep) {
1460 /* Get the sum of the seek positions in all of the files. */
1462 for (i = 0; i < in_file_count; i++)
1463 file_pos += wtap_read_so_far(in_files[i].wth);
1464 progbar_val = (gfloat) file_pos / (gfloat) f_len;
1465 if (progbar_val > 1.0f) {
1466 /* Some file probably grew while we were reading it.
1467 That "shouldn't happen", so we'll just clip the progress
1471 if (progbar != NULL) {
1472 g_snprintf(status_str, sizeof(status_str),
1473 "%" G_GINT64_MODIFIER "dKB of %" G_GINT64_MODIFIER "dKB",
1474 file_pos / 1024, f_len / 1024);
1475 update_progress_dlg(progbar, progbar_val, status_str);
1477 progbar_nextstep += progbar_quantum;
1481 /* Well, the user decided to abort the merge. */
1485 /* If we have WTAP_ENCAP_PER_PACKETend the infiles are of type WTAP_FILE_PCAP
1486 * we need to set the interface id in the paket header = the interface index we used
1487 * in the IDBs interface description for this file(encapsulation type).
1489 if (fake_interface_ids) {
1490 struct wtap_pkthdr *phdr;
1492 phdr = wtap_phdr(in_file->wth);
1493 phdr->interface_id = in_file->interface_id;
1494 phdr->presence_flags = phdr->presence_flags | WTAP_HAS_INTERFACE_ID;
1496 if (!wtap_dump(pdh, wtap_phdr(in_file->wth), wtap_pseudoheader(in_file->wth),
1497 wtap_buf_ptr(in_file->wth), &write_err)) {
1498 got_write_error = TRUE;
1503 /* We're done merging the files; destroy the progress bar if it was created. */
1504 if (progbar != NULL)
1505 destroy_progress_dlg(progbar);
1507 merge_close_in_files(in_file_count, in_files);
1508 if (!got_read_error && !got_write_error) {
1509 if (!wtap_dump_close(pdh, &write_err))
1510 got_write_error = TRUE;
1512 wtap_dump_close(pdh, &close_err);
1514 if (got_read_error) {
1516 * Find the file on which we got the error, and report the error.
1518 for (i = 0; i < in_file_count; i++) {
1519 if (in_files[i].state == GOT_ERROR) {
1520 /* Put up a message box noting that a read failed somewhere along
1522 display_basename = g_filename_display_basename(in_files[i].filename);
1525 case WTAP_ERR_UNSUPPORTED_ENCAP:
1526 simple_error_message_box(
1527 "The capture file %s has a packet with a network type that Wireshark doesn't support.\n(%s)",
1528 display_basename, err_info);
1532 case WTAP_ERR_CANT_READ:
1533 simple_error_message_box(
1534 "An attempt to read from the capture file %s failed for"
1535 " some unknown reason.", display_basename);
1538 case WTAP_ERR_SHORT_READ:
1539 simple_error_message_box(
1540 "The capture file %s appears to have been cut short"
1541 " in the middle of a packet.", display_basename);
1544 case WTAP_ERR_BAD_FILE:
1545 simple_error_message_box(
1546 "The capture file %s appears to be damaged or corrupt.\n(%s)",
1547 display_basename, err_info);
1551 case WTAP_ERR_DECOMPRESS:
1552 simple_error_message_box(
1553 "The compressed capture file %s appears to be damaged or corrupt.\n"
1554 "(%s)", display_basename, err_info);
1559 simple_error_message_box(
1560 "An error occurred while reading the"
1561 " capture file %s: %s.",
1562 display_basename, wtap_strerror(read_err));
1565 g_free(display_basename);
1570 if (got_write_error) {
1571 /* Put up an alert box for the write error. */
1572 if (write_err < 0) {
1573 /* Wiretap error. */
1574 switch (write_err) {
1576 case WTAP_ERR_UNSUPPORTED_ENCAP:
1578 * This is a problem with the particular frame we're writing;
1579 * note that, and give the frame number.
1581 display_basename = g_filename_display_basename(in_file->filename);
1582 simple_error_message_box(
1583 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.",
1584 in_file->packet_num, display_basename,
1585 wtap_file_type_string(file_type));
1586 g_free(display_basename);
1590 display_basename = g_filename_display_basename(out_filename);
1591 simple_error_message_box(
1592 "An error occurred while writing to the file \"%s\": %s.",
1593 out_filename, wtap_strerror(write_err));
1594 g_free(display_basename);
1599 write_failure_alert_box(out_filename, write_err);
1603 if (got_read_error || got_write_error || stop_flag) {
1604 /* Callers aren't expected to treat an error or an explicit abort
1605 differently - we put up error dialogs ourselves, so they don't
1613 cf_filter_packets(capture_file *cf, gchar *dftext, gboolean force)
1615 const char *filter_new = dftext ? dftext : "";
1616 const char *filter_old = cf->dfilter ? cf->dfilter : "";
1618 GTimeVal start_time;
1620 /* if new filter equals old one, do nothing unless told to do so */
1621 if (!force && strcmp(filter_new, filter_old) == 0) {
1627 if (dftext == NULL) {
1628 /* The new filter is an empty filter (i.e., display all packets).
1629 * so leave dfcode==NULL
1633 * We have a filter; make a copy of it (as we'll be saving it),
1634 * and try to compile it.
1636 dftext = g_strdup(dftext);
1637 if (!dfilter_compile(dftext, &dfcode)) {
1638 /* The attempt failed; report an error. */
1639 simple_message_box(ESD_TYPE_ERROR, NULL,
1640 "See the help for a description of the display filter syntax.",
1641 "\"%s\" isn't a valid display filter: %s",
1642 dftext, dfilter_error_msg);
1648 if (dfcode == NULL) {
1649 /* Yes - free the filter text, and set it to null. */
1655 /* We have a valid filter. Replace the current filter. */
1656 g_free(cf->dfilter);
1657 cf->dfilter = dftext;
1658 g_get_current_time(&start_time);
1661 /* Now rescan the packet list, applying the new filter, but not
1662 throwing away information constructed on a previous pass. */
1663 if (dftext == NULL) {
1664 rescan_packets(cf, "Resetting", "Filter", TRUE, FALSE);
1666 rescan_packets(cf, "Filtering", dftext, TRUE, FALSE);
1669 /* Cleanup and release all dfilter resources */
1670 dfilter_free(dfcode);
1676 cf_reftime_packets(capture_file *cf)
1678 ref_time_packets(cf);
1682 cf_redissect_packets(capture_file *cf)
1684 rescan_packets(cf, "Reprocessing", "all packets", TRUE, TRUE);
1688 cf_read_frame_r(capture_file *cf, frame_data *fdata,
1689 union wtap_pseudo_header *pseudo_header, guint8 *pd)
1693 gchar *display_basename;
1695 #ifdef WANT_PACKET_EDITOR
1696 /* if fdata->file_off == -1 it means packet was edited, and we must find data inside edited_frames tree */
1697 if (G_UNLIKELY(fdata->file_off == -1)) {
1698 const modified_frame_data *frame = (const modified_frame_data *) g_tree_lookup(cf->edited_frames, GINT_TO_POINTER(fdata->num));
1701 simple_error_message_box("fdata->file_off == -1, but can't find modified frame!");
1705 *pseudo_header = frame->ph;
1706 memcpy(pd, frame->pd, fdata->cap_len);
1711 if (!wtap_seek_read(cf->wth, fdata->file_off, pseudo_header, pd,
1712 fdata->cap_len, &err, &err_info)) {
1713 display_basename = g_filename_display_basename(cf->filename);
1716 case WTAP_ERR_UNSUPPORTED_ENCAP:
1717 simple_error_message_box("The file \"%s\" has a packet with a network type that Wireshark doesn't support.\n(%s)",
1718 display_basename, err_info);
1722 case WTAP_ERR_BAD_FILE:
1723 simple_error_message_box("An error occurred while reading from the file \"%s\": %s.\n(%s)",
1724 display_basename, wtap_strerror(err), err_info);
1729 simple_error_message_box(
1730 "An error occurred while reading from the file \"%s\": %s.",
1731 display_basename, wtap_strerror(err));
1734 g_free(display_basename);
1741 cf_read_frame(capture_file *cf, frame_data *fdata)
1743 return cf_read_frame_r(cf, fdata, &cf->pseudo_header, cf->pd);
1746 /* Rescan the list of packets, reconstructing the CList.
1748 "action" describes why we're doing this; it's used in the progress
1751 "action_item" describes what we're doing; it's used in the progress
1754 "refilter" is TRUE if we need to re-evaluate the filter expression.
1756 "redissect" is TRUE if we need to make the dissectors reconstruct
1757 any state information they have (because a preference that affects
1758 some dissector has changed, meaning some dissector might construct
1759 its state differently from the way it was constructed the last time). */
1761 rescan_packets(capture_file *cf, const char *action, const char *action_item,
1762 gboolean refilter, gboolean redissect)
1764 /* Rescan packets new packet list */
1767 progdlg_t *progbar = NULL;
1770 frame_data *selected_frame, *preceding_frame, *following_frame, *prev_frame;
1771 int selected_frame_num, preceding_frame_num, following_frame_num, prev_frame_num;
1772 gboolean selected_frame_seen;
1774 GTimeVal start_time;
1775 gchar status_str[100];
1776 int progbar_nextstep;
1777 int progbar_quantum;
1779 gboolean filtering_tap_listeners;
1781 gboolean add_to_packet_list = FALSE;
1783 guint32 frames_count;
1785 /* Compile the current display filter.
1786 * We assume this will not fail since cf->dfilter is only set in
1787 * cf_filter IFF the filter was valid.
1789 compiled = dfilter_compile(cf->dfilter, &dfcode);
1790 g_assert(!cf->dfilter || (compiled && dfcode));
1792 /* Do we have any tap listeners with filters? */
1793 filtering_tap_listeners = have_filtering_tap_listeners();
1795 /* Get the union of the flags for all tap listeners. */
1796 tap_flags = union_of_tap_listener_flags();
1798 reset_tap_listeners();
1799 /* Which frame, if any, is the currently selected frame?
1800 XXX - should the selected frame or the focus frame be the "current"
1801 frame, that frame being the one from which "Find Frame" searches
1803 selected_frame = cf->current_frame;
1805 /* Mark frame num as not found */
1806 selected_frame_num = -1;
1808 /* Freeze the packet list while we redo it, so we don't get any
1809 screen updates while it happens. */
1810 packet_list_freeze();
1813 /* We need to re-initialize all the state information that protocols
1814 keep, because some preference that controls a dissector has changed,
1815 which might cause the state information to be constructed differently
1816 by that dissector. */
1818 /* We might receive new packets while redissecting, and we don't
1819 want to dissect those before their time. */
1820 cf->redissecting = TRUE;
1822 /* Cleanup all data structures used for dissection. */
1823 cleanup_dissection();
1824 /* Initialize all data structures used for dissection. */
1827 /* We need to redissect the packets so we have to discard our old
1828 * packet list store. */
1829 packet_list_clear();
1830 add_to_packet_list = TRUE;
1833 /* We don't yet know which will be the first and last frames displayed. */
1834 cf->first_displayed = 0;
1835 cf->last_displayed = 0;
1837 /* We currently don't display any packets */
1838 cf->displayed_count = 0;
1840 /* Iterate through the list of frames. Call a routine for each frame
1841 to check whether it should be displayed and, if so, add it to
1842 the display list. */
1843 nstime_set_unset(&first_ts);
1848 /* Update the progress bar when it gets to this value. */
1849 progbar_nextstep = 0;
1850 /* When we reach the value that triggers a progress bar update,
1851 bump that value by this amount. */
1852 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
1853 /* Count of packets at which we've looked. */
1855 /* Progress so far. */
1859 g_get_current_time(&start_time);
1861 /* no previous row yet */
1862 prev_frame_num = -1;
1865 preceding_frame_num = -1;
1866 preceding_frame = NULL;
1867 following_frame_num = -1;
1868 following_frame = NULL;
1870 selected_frame_seen = FALSE;
1872 frames_count = cf->count;
1873 for (framenum = 1; framenum <= frames_count; framenum++) {
1874 fdata = frame_data_sequence_find(cf->frames, framenum);
1876 /* Create the progress bar if necessary.
1877 We check on every iteration of the loop, so that it takes no
1878 longer than the standard time to create it (otherwise, for a
1879 large file, we might take considerably longer than that standard
1880 time in order to get to the next progress bar step). */
1881 if (progbar == NULL)
1882 progbar = delayed_create_progress_dlg(cf->window, action, action_item, TRUE,
1883 &stop_flag, &start_time,
1886 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
1887 when we update it, we have to run the GTK+ main loop to get it
1888 to repaint what's pending, and doing so may involve an "ioctl()"
1889 to see if there's any pending input from an X server, and doing
1890 that for every packet can be costly, especially on a big file. */
1891 if (count >= progbar_nextstep) {
1892 /* let's not divide by zero. I should never be started
1893 * with count == 0, so let's assert that
1895 g_assert(cf->count > 0);
1896 progbar_val = (gfloat) count / frames_count;
1898 if (progbar != NULL) {
1899 g_snprintf(status_str, sizeof(status_str),
1900 "%4u of %u frames", count, frames_count);
1901 update_progress_dlg(progbar, progbar_val, status_str);
1904 progbar_nextstep += progbar_quantum;
1908 /* Well, the user decided to abort the filtering. Just stop.
1910 XXX - go back to the previous filter? Users probably just
1911 want not to wait for a filtering operation to finish;
1912 unless we cancel by having no filter, reverting to the
1913 previous filter will probably be even more expensive than
1914 continuing the filtering, as it involves going back to the
1915 beginning and filtering, and even with no filter we currently
1916 have to re-generate the entire clist, which is also expensive.
1918 I'm not sure what Network Monitor does, but it doesn't appear
1919 to give you an unfiltered display if you cancel. */
1926 /* Since all state for the frame was destroyed, mark the frame
1927 * as not visited, free the GSList referring to the state
1928 * data (the per-frame data itself was freed by
1929 * "init_dissection()"), and null out the GSList pointer. */
1930 fdata->flags.visited = 0;
1931 frame_data_cleanup(fdata);
1932 frames_count = cf->count;
1935 if (redissect || refilter) {
1936 /* If we're redissecting or refiltering then any frame dependencies
1937 * from the previous dissection/filtering are no longer valid.
1939 fdata->flags.dependent_of_displayed = 0;
1942 if (!cf_read_frame(cf, fdata))
1943 break; /* error reading the frame */
1945 /* If the previous frame is displayed, and we haven't yet seen the
1946 selected frame, remember that frame - it's the closest one we've
1947 yet seen before the selected frame. */
1948 if (prev_frame_num != -1 && !selected_frame_seen && prev_frame->flags.passed_dfilter) {
1949 preceding_frame_num = prev_frame_num;
1950 preceding_frame = prev_frame;
1952 add_packet_to_packet_list(fdata, cf, dfcode, filtering_tap_listeners,
1953 tap_flags, &cf->pseudo_header, cf->pd,
1955 add_to_packet_list);
1957 /* If this frame is displayed, and this is the first frame we've
1958 seen displayed after the selected frame, remember this frame -
1959 it's the closest one we've yet seen at or after the selected
1961 if (fdata->flags.passed_dfilter && selected_frame_seen && following_frame_num == -1) {
1962 following_frame_num = fdata->num;
1963 following_frame = fdata;
1965 if (fdata == selected_frame) {
1966 selected_frame_seen = TRUE;
1967 if (fdata->flags.passed_dfilter)
1968 selected_frame_num = fdata->num;
1971 /* Remember this frame - it'll be the previous frame
1972 on the next pass through the loop. */
1973 prev_frame_num = fdata->num;
1977 /* We are done redissecting the packet list. */
1978 cf->redissecting = FALSE;
1981 frames_count = cf->count;
1982 /* Clear out what remains of the visited flags and per-frame data
1985 XXX - that may cause various forms of bogosity when dissecting
1986 these frames, as they won't have been seen by this sequential
1987 pass, but the only alternative I see is to keep scanning them
1988 even though the user requested that the scan stop, and that
1989 would leave the user stuck with an Wireshark grinding on
1990 until it finishes. Should we just stick them with that? */
1991 for (; framenum <= frames_count; framenum++) {
1992 fdata = frame_data_sequence_find(cf->frames, framenum);
1993 fdata->flags.visited = 0;
1994 frame_data_cleanup(fdata);
1998 /* We're done filtering the packets; destroy the progress bar if it
2000 if (progbar != NULL)
2001 destroy_progress_dlg(progbar);
2003 /* Unfreeze the packet list. */
2004 if (!add_to_packet_list)
2005 packet_list_recreate_visible_rows();
2007 /* Compute the time it took to filter the file */
2008 compute_elapsed(&start_time);
2012 if (selected_frame_num == -1) {
2013 /* The selected frame didn't pass the filter. */
2014 if (selected_frame == NULL) {
2015 /* That's because there *was* no selected frame. Make the first
2016 displayed frame the current frame. */
2017 selected_frame_num = 0;
2019 /* Find the nearest displayed frame to the selected frame (whether
2020 it's before or after that frame) and make that the current frame.
2021 If the next and previous displayed frames are equidistant from the
2022 selected frame, choose the next one. */
2023 g_assert(following_frame == NULL ||
2024 following_frame->num >= selected_frame->num);
2025 g_assert(preceding_frame == NULL ||
2026 preceding_frame->num <= selected_frame->num);
2027 if (following_frame == NULL) {
2028 /* No frame after the selected frame passed the filter, so we
2029 have to select the last displayed frame before the selected
2031 selected_frame_num = preceding_frame_num;
2032 selected_frame = preceding_frame;
2033 } else if (preceding_frame == NULL) {
2034 /* No frame before the selected frame passed the filter, so we
2035 have to select the first displayed frame after the selected
2037 selected_frame_num = following_frame_num;
2038 selected_frame = following_frame;
2040 /* Frames before and after the selected frame passed the filter, so
2041 we'll select the previous frame */
2042 selected_frame_num = preceding_frame_num;
2043 selected_frame = preceding_frame;
2048 if (selected_frame_num == -1) {
2049 /* There are no frames displayed at all. */
2050 cf_unselect_packet(cf);
2052 /* Either the frame that was selected passed the filter, or we've
2053 found the nearest displayed frame to that frame. Select it, make
2054 it the focus row, and make it visible. */
2055 /* Set to invalid to force update of packet list and packet details */
2056 cf->current_row = -1;
2057 if (selected_frame_num == 0) {
2058 packet_list_select_first_row();
2060 if (!packet_list_select_row_from_data(selected_frame)) {
2061 /* We didn't find a row corresponding to this frame.
2062 This means that the frame isn't being displayed currently,
2063 so we can't select it. */
2064 simple_message_box(ESD_TYPE_INFO, NULL,
2065 "The capture file is probably not fully dissected.",
2066 "End of capture exceeded!");
2071 /* Cleanup and release all dfilter resources */
2072 dfilter_free(dfcode);
2077 * Scan trough all frame data and recalculate the ref time
2078 * without rereading the file.
2079 * XXX - do we need a progres bar or is this fast enough?
2082 ref_time_packets(capture_file *cf)
2087 nstime_set_unset(&first_ts);
2091 for (framenum = 1; framenum <= cf->count; framenum++) {
2092 fdata = frame_data_sequence_find(cf->frames, framenum);
2094 /* just add some value here until we know if it is being displayed or not */
2095 fdata->cum_bytes = cum_bytes + fdata->pkt_len;
2101 /* If we don't have the time stamp of the first packet in the
2102 capture, it's because this is the first packet. Save the time
2103 stamp of this packet as the time stamp of the first packet. */
2104 if (nstime_is_unset(&first_ts)) {
2105 first_ts = fdata->abs_ts;
2107 /* if this frames is marked as a reference time frame, reset
2108 firstsec and firstusec to this frame */
2109 if (fdata->flags.ref_time) {
2110 first_ts = fdata->abs_ts;
2113 /* If we don't have the time stamp of the previous displayed packet,
2114 it's because this is the first displayed packet. Save the time
2115 stamp of this packet as the time stamp of the previous displayed
2117 if (prev_dis == NULL) {
2121 /* Get the time elapsed between the first packet and this packet. */
2122 nstime_delta(&fdata->rel_ts, &fdata->abs_ts, &first_ts);
2124 /* If it's greater than the current elapsed time, set the elapsed time
2125 to it (we check for "greater than" so as not to be confused by
2126 time moving backwards). */
2127 if ((gint32)cf->elapsed_time.secs < fdata->rel_ts.secs
2128 || ((gint32)cf->elapsed_time.secs == fdata->rel_ts.secs && (gint32)cf->elapsed_time.nsecs < fdata->rel_ts.nsecs)) {
2129 cf->elapsed_time = fdata->rel_ts;
2132 /* If this frame is displayed, get the time elapsed between the
2133 previous displayed packet and this packet. */
2134 if ( fdata->flags.passed_dfilter ) {
2135 fdata->prev_dis = prev_dis;
2142 if ( (fdata->flags.passed_dfilter) || (fdata->flags.ref_time) ) {
2143 /* This frame either passed the display filter list or is marked as
2144 a time reference frame. All time reference frames are displayed
2145 even if they dont pass the display filter */
2146 if (fdata->flags.ref_time) {
2147 /* if this was a TIME REF frame we should reset the cum_bytes field */
2148 cum_bytes = fdata->pkt_len;
2149 fdata->cum_bytes = cum_bytes;
2151 /* increase cum_bytes with this packets length */
2152 cum_bytes += fdata->pkt_len;
2165 process_specified_packets(capture_file *cf, packet_range_t *range,
2166 const char *string1, const char *string2, gboolean terminate_is_stop,
2167 gboolean (*callback)(capture_file *, frame_data *,
2168 union wtap_pseudo_header *, const guint8 *, void *),
2169 void *callback_args)
2171 union wtap_pseudo_header pseudo_header;
2175 guint8 pd[WTAP_MAX_PACKET_SIZE+1];
2176 psp_return_t ret = PSP_FINISHED;
2178 progdlg_t *progbar = NULL;
2181 gboolean progbar_stop_flag;
2182 GTimeVal progbar_start_time;
2183 gchar progbar_status_str[100];
2184 int progbar_nextstep;
2185 int progbar_quantum;
2186 range_process_e process_this;
2188 /* Update the progress bar when it gets to this value. */
2189 progbar_nextstep = 0;
2190 /* When we reach the value that triggers a progress bar update,
2191 bump that value by this amount. */
2192 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
2193 /* Count of packets at which we've looked. */
2195 /* Progress so far. */
2198 progbar_stop_flag = FALSE;
2199 g_get_current_time(&progbar_start_time);
2202 packet_range_process_init(range);
2204 /* Iterate through all the packets, printing the packets that
2205 were selected by the current display filter. */
2206 for (framenum = 1; framenum <= cf->count; framenum++) {
2207 fdata = frame_data_sequence_find(cf->frames, framenum);
2209 /* Create the progress bar if necessary.
2210 We check on every iteration of the loop, so that it takes no
2211 longer than the standard time to create it (otherwise, for a
2212 large file, we might take considerably longer than that standard
2213 time in order to get to the next progress bar step). */
2214 if (progbar == NULL)
2215 progbar = delayed_create_progress_dlg(cf->window, string1, string2,
2218 &progbar_start_time,
2221 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
2222 when we update it, we have to run the GTK+ main loop to get it
2223 to repaint what's pending, and doing so may involve an "ioctl()"
2224 to see if there's any pending input from an X server, and doing
2225 that for every packet can be costly, especially on a big file. */
2226 if (progbar_count >= progbar_nextstep) {
2227 /* let's not divide by zero. I should never be started
2228 * with count == 0, so let's assert that
2230 g_assert(cf->count > 0);
2231 progbar_val = (gfloat) progbar_count / cf->count;
2233 if (progbar != NULL) {
2234 g_snprintf(progbar_status_str, sizeof(progbar_status_str),
2235 "%4u of %u packets", progbar_count, cf->count);
2236 update_progress_dlg(progbar, progbar_val, progbar_status_str);
2239 progbar_nextstep += progbar_quantum;
2242 if (progbar_stop_flag) {
2243 /* Well, the user decided to abort the operation. Just stop,
2244 and arrange to return PSP_STOPPED to our caller, so they know
2245 it was stopped explicitly. */
2252 if (range != NULL) {
2253 /* do we have to process this packet? */
2254 process_this = packet_range_process_packet(range, fdata);
2255 if (process_this == range_process_next) {
2256 /* this packet uninteresting, continue with next one */
2258 } else if (process_this == range_processing_finished) {
2259 /* all interesting packets processed, stop the loop */
2264 /* Get the packet */
2265 if (!cf_read_frame_r(cf, fdata, &pseudo_header, pd)) {
2266 /* Attempt to get the packet failed. */
2270 /* Process the packet */
2271 if (!callback(cf, fdata, &pseudo_header, pd, callback_args)) {
2272 /* Callback failed. We assume it reported the error appropriately. */
2278 /* We're done printing the packets; destroy the progress bar if
2280 if (progbar != NULL)
2281 destroy_progress_dlg(progbar);
2287 gboolean construct_protocol_tree;
2289 } retap_callback_args_t;
2292 retap_packet(capture_file *cf _U_, frame_data *fdata,
2293 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2296 retap_callback_args_t *args = argsp;
2299 epan_dissect_init(&edt, args->construct_protocol_tree, FALSE);
2300 tap_queue_init(&edt);
2301 epan_dissect_run(&edt, pseudo_header, pd, fdata, args->cinfo);
2302 tap_push_tapped_queue(&edt);
2303 epan_dissect_cleanup(&edt);
2309 cf_retap_packets(capture_file *cf)
2311 packet_range_t range;
2312 retap_callback_args_t callback_args;
2313 gboolean filtering_tap_listeners;
2316 /* Do we have any tap listeners with filters? */
2317 filtering_tap_listeners = have_filtering_tap_listeners();
2319 tap_flags = union_of_tap_listener_flags();
2321 /* If any tap listeners have filters, or require the protocol tree,
2322 construct the protocol tree. */
2323 callback_args.construct_protocol_tree = filtering_tap_listeners ||
2324 (tap_flags & TL_REQUIRES_PROTO_TREE);
2326 /* If any tap listeners require the columns, construct them. */
2327 callback_args.cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
2329 /* Reset the tap listeners. */
2330 reset_tap_listeners();
2332 /* Iterate through the list of packets, dissecting all packets and
2333 re-running the taps. */
2334 packet_range_init(&range, cf);
2335 packet_range_process_init(&range);
2336 switch (process_specified_packets(cf, &range, "Recalculating statistics on",
2337 "all packets", TRUE, retap_packet,
2340 /* Completed successfully. */
2344 /* Well, the user decided to abort the refiltering.
2345 Return CF_READ_ABORTED so our caller knows they did that. */
2346 return CF_READ_ABORTED;
2349 /* Error while retapping. */
2350 return CF_READ_ERROR;
2353 g_assert_not_reached();
2358 print_args_t *print_args;
2359 gboolean print_header_line;
2360 char *header_line_buf;
2361 int header_line_buf_len;
2362 gboolean print_formfeed;
2363 gboolean print_separator;
2367 int num_visible_cols;
2369 } print_callback_args_t;
2372 print_packet(capture_file *cf, frame_data *fdata,
2373 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2376 print_callback_args_t *args = argsp;
2383 gboolean proto_tree_needed;
2384 char bookmark_name[9+10+1]; /* "__frameNNNNNNNNNN__\0" */
2385 char bookmark_title[6+10+1]; /* "Frame NNNNNNNNNN__\0" */
2387 /* Create the protocol tree, and make it visible, if we're printing
2388 the dissection or the hex data.
2389 XXX - do we need it if we're just printing the hex data? */
2391 args->print_args->print_dissections != print_dissections_none || args->print_args->print_hex || have_custom_cols(&cf->cinfo);
2392 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2394 /* Fill in the column information if we're printing the summary
2396 if (args->print_args->print_summary) {
2397 col_custom_prime_edt(&edt, &cf->cinfo);
2398 epan_dissect_run(&edt, pseudo_header, pd, fdata, &cf->cinfo);
2399 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2401 epan_dissect_run(&edt, pseudo_header, pd, fdata, NULL);
2403 if (args->print_formfeed) {
2404 if (!new_page(args->print_args->stream))
2407 if (args->print_separator) {
2408 if (!print_line(args->print_args->stream, 0, ""))
2414 * We generate bookmarks, if the output format supports them.
2415 * The name is "__frameN__".
2417 g_snprintf(bookmark_name, sizeof bookmark_name, "__frame%u__", fdata->num);
2419 if (args->print_args->print_summary) {
2420 if (args->print_header_line) {
2421 if (!print_line(args->print_args->stream, 0, args->header_line_buf))
2423 args->print_header_line = FALSE; /* we might not need to print any more */
2425 cp = &args->line_buf[0];
2427 for (i = 0; i < args->num_visible_cols; i++) {
2428 /* Find the length of the string for this column. */
2429 column_len = (int) strlen(cf->cinfo.col_data[args->visible_cols[i]]);
2430 if (args->col_widths[i] > column_len)
2431 column_len = args->col_widths[i];
2433 /* Make sure there's room in the line buffer for the column; if not,
2434 double its length. */
2435 line_len += column_len + 1; /* "+1" for space */
2436 if (line_len > args->line_buf_len) {
2437 cp_off = (int) (cp - args->line_buf);
2438 args->line_buf_len = 2 * line_len;
2439 args->line_buf = g_realloc(args->line_buf, args->line_buf_len + 1);
2440 cp = args->line_buf + cp_off;
2443 /* Right-justify the packet number column. */
2444 if (cf->cinfo.col_fmt[args->visible_cols[i]] == COL_NUMBER)
2445 g_snprintf(cp, column_len+1, "%*s", args->col_widths[i], cf->cinfo.col_data[args->visible_cols[i]]);
2447 g_snprintf(cp, column_len+1, "%-*s", args->col_widths[i], cf->cinfo.col_data[args->visible_cols[i]]);
2449 if (i != args->num_visible_cols - 1)
2455 * Generate a bookmark, using the summary line as the title.
2457 if (!print_bookmark(args->print_args->stream, bookmark_name,
2461 if (!print_line(args->print_args->stream, 0, args->line_buf))
2465 * Generate a bookmark, using "Frame N" as the title, as we're not
2466 * printing the summary line.
2468 g_snprintf(bookmark_title, sizeof bookmark_title, "Frame %u", fdata->num);
2469 if (!print_bookmark(args->print_args->stream, bookmark_name,
2472 } /* if (print_summary) */
2474 if (args->print_args->print_dissections != print_dissections_none) {
2475 if (args->print_args->print_summary) {
2476 /* Separate the summary line from the tree with a blank line. */
2477 if (!print_line(args->print_args->stream, 0, ""))
2481 /* Print the information in that tree. */
2482 if (!proto_tree_print(args->print_args, &edt, args->print_args->stream))
2485 /* Print a blank line if we print anything after this (aka more than one packet). */
2486 args->print_separator = TRUE;
2488 /* Print a header line if we print any more packet summaries */
2489 args->print_header_line = TRUE;
2492 if (args->print_args->print_hex) {
2493 /* Print the full packet data as hex. */
2494 if (!print_hex_data(args->print_args->stream, &edt))
2497 /* Print a blank line if we print anything after this (aka more than one packet). */
2498 args->print_separator = TRUE;
2500 /* Print a header line if we print any more packet summaries */
2501 args->print_header_line = TRUE;
2502 } /* if (args->print_args->print_dissections != print_dissections_none) */
2504 epan_dissect_cleanup(&edt);
2506 /* do we want to have a formfeed between each packet from now on? */
2507 if (args->print_args->print_formfeed) {
2508 args->print_formfeed = TRUE;
2514 epan_dissect_cleanup(&edt);
2519 cf_print_packets(capture_file *cf, print_args_t *print_args)
2521 print_callback_args_t callback_args;
2524 int i, cp_off, column_len, line_len;
2525 int num_visible_col = 0, last_visible_col = 0, visible_col_count;
2530 callback_args.print_args = print_args;
2531 callback_args.print_header_line = TRUE;
2532 callback_args.header_line_buf = NULL;
2533 callback_args.header_line_buf_len = 256;
2534 callback_args.print_formfeed = FALSE;
2535 callback_args.print_separator = FALSE;
2536 callback_args.line_buf = NULL;
2537 callback_args.line_buf_len = 256;
2538 callback_args.col_widths = NULL;
2539 callback_args.num_visible_cols = 0;
2540 callback_args.visible_cols = NULL;
2542 if (!print_preamble(print_args->stream, cf->filename)) {
2543 destroy_print_stream(print_args->stream);
2544 return CF_PRINT_WRITE_ERROR;
2547 if (print_args->print_summary) {
2548 /* We're printing packet summaries. Allocate the header line buffer
2549 and get the column widths. */
2550 callback_args.header_line_buf = g_malloc(callback_args.header_line_buf_len + 1);
2552 /* Find the number of visible columns and the last visible column */
2553 for (i = 0; i < prefs.num_cols; i++) {
2555 clp = g_list_nth(prefs.col_list, i);
2556 if (clp == NULL) /* Sanity check, Invalid column requested */
2559 cfmt = (fmt_data *) clp->data;
2560 if (cfmt->visible) {
2562 last_visible_col = i;
2566 /* Find the widths for each of the columns - maximum of the
2567 width of the title and the width of the data - and construct
2568 a buffer with a line containing the column titles. */
2569 callback_args.num_visible_cols = num_visible_col;
2570 callback_args.col_widths = (gint *) g_malloc(sizeof(gint) * num_visible_col);
2571 callback_args.visible_cols = (gint *) g_malloc(sizeof(gint) * num_visible_col);
2572 cp = &callback_args.header_line_buf[0];
2574 visible_col_count = 0;
2575 for (i = 0; i < cf->cinfo.num_cols; i++) {
2577 clp = g_list_nth(prefs.col_list, i);
2578 if (clp == NULL) /* Sanity check, Invalid column requested */
2581 cfmt = (fmt_data *) clp->data;
2582 if (cfmt->visible == FALSE)
2585 /* Save the order of visible columns */
2586 callback_args.visible_cols[visible_col_count] = i;
2588 /* Don't pad the last column. */
2589 if (i == last_visible_col)
2590 callback_args.col_widths[visible_col_count] = 0;
2592 callback_args.col_widths[visible_col_count] = (gint) strlen(cf->cinfo.col_title[i]);
2593 data_width = get_column_char_width(get_column_format(i));
2594 if (data_width > callback_args.col_widths[visible_col_count])
2595 callback_args.col_widths[visible_col_count] = data_width;
2598 /* Find the length of the string for this column. */
2599 column_len = (int) strlen(cf->cinfo.col_title[i]);
2600 if (callback_args.col_widths[i] > column_len)
2601 column_len = callback_args.col_widths[visible_col_count];
2603 /* Make sure there's room in the line buffer for the column; if not,
2604 double its length. */
2605 line_len += column_len + 1; /* "+1" for space */
2606 if (line_len > callback_args.header_line_buf_len) {
2607 cp_off = (int) (cp - callback_args.header_line_buf);
2608 callback_args.header_line_buf_len = 2 * line_len;
2609 callback_args.header_line_buf = g_realloc(callback_args.header_line_buf,
2610 callback_args.header_line_buf_len + 1);
2611 cp = callback_args.header_line_buf + cp_off;
2614 /* Right-justify the packet number column. */
2615 /* if (cf->cinfo.col_fmt[i] == COL_NUMBER)
2616 g_snprintf(cp, column_len+1, "%*s", callback_args.col_widths[visible_col_count], cf->cinfo.col_title[i]);
2618 g_snprintf(cp, column_len+1, "%-*s", callback_args.col_widths[visible_col_count], cf->cinfo.col_title[i]);
2620 if (i != cf->cinfo.num_cols - 1)
2623 visible_col_count++;
2627 /* Now start out the main line buffer with the same length as the
2628 header line buffer. */
2629 callback_args.line_buf_len = callback_args.header_line_buf_len;
2630 callback_args.line_buf = g_malloc(callback_args.line_buf_len + 1);
2631 } /* if (print_summary) */
2633 /* Iterate through the list of packets, printing the packets we were
2635 ret = process_specified_packets(cf, &print_args->range, "Printing",
2636 "selected packets", TRUE, print_packet,
2639 g_free(callback_args.header_line_buf);
2640 g_free(callback_args.line_buf);
2641 g_free(callback_args.col_widths);
2642 g_free(callback_args.visible_cols);
2647 /* Completed successfully. */
2651 /* Well, the user decided to abort the printing.
2653 XXX - note that what got generated before they did that
2654 will get printed if we're piping to a print program; we'd
2655 have to write to a file and then hand that to the print
2656 program to make it actually not print anything. */
2660 /* Error while printing.
2662 XXX - note that what got generated before they did that
2663 will get printed if we're piping to a print program; we'd
2664 have to write to a file and then hand that to the print
2665 program to make it actually not print anything. */
2666 destroy_print_stream(print_args->stream);
2667 return CF_PRINT_WRITE_ERROR;
2670 if (!print_finale(print_args->stream)) {
2671 destroy_print_stream(print_args->stream);
2672 return CF_PRINT_WRITE_ERROR;
2675 if (!destroy_print_stream(print_args->stream))
2676 return CF_PRINT_WRITE_ERROR;
2682 write_pdml_packet(capture_file *cf _U_, frame_data *fdata,
2683 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2689 /* Create the protocol tree, but don't fill in the column information. */
2690 epan_dissect_init(&edt, TRUE, TRUE);
2691 epan_dissect_run(&edt, pseudo_header, pd, fdata, NULL);
2693 /* Write out the information in that tree. */
2694 proto_tree_write_pdml(&edt, fh);
2696 epan_dissect_cleanup(&edt);
2702 cf_write_pdml_packets(capture_file *cf, print_args_t *print_args)
2707 fh = ws_fopen(print_args->file, "w");
2709 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2711 write_pdml_preamble(fh, cf->filename);
2714 return CF_PRINT_WRITE_ERROR;
2717 /* Iterate through the list of packets, printing the packets we were
2719 ret = process_specified_packets(cf, &print_args->range, "Writing PDML",
2720 "selected packets", TRUE,
2721 write_pdml_packet, fh);
2726 /* Completed successfully. */
2730 /* Well, the user decided to abort the printing. */
2734 /* Error while printing. */
2736 return CF_PRINT_WRITE_ERROR;
2739 write_pdml_finale(fh);
2742 return CF_PRINT_WRITE_ERROR;
2745 /* XXX - check for an error */
2752 write_psml_packet(capture_file *cf, frame_data *fdata,
2753 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2758 gboolean proto_tree_needed;
2760 /* Fill in the column information, only create the protocol tree
2761 if having custom columns. */
2762 proto_tree_needed = have_custom_cols(&cf->cinfo);
2763 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2764 col_custom_prime_edt(&edt, &cf->cinfo);
2765 epan_dissect_run(&edt, pseudo_header, pd, fdata, &cf->cinfo);
2766 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2768 /* Write out the information in that tree. */
2769 proto_tree_write_psml(&edt, fh);
2771 epan_dissect_cleanup(&edt);
2777 cf_write_psml_packets(capture_file *cf, print_args_t *print_args)
2782 fh = ws_fopen(print_args->file, "w");
2784 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2786 write_psml_preamble(fh);
2789 return CF_PRINT_WRITE_ERROR;
2792 /* Iterate through the list of packets, printing the packets we were
2794 ret = process_specified_packets(cf, &print_args->range, "Writing PSML",
2795 "selected packets", TRUE,
2796 write_psml_packet, fh);
2801 /* Completed successfully. */
2805 /* Well, the user decided to abort the printing. */
2809 /* Error while printing. */
2811 return CF_PRINT_WRITE_ERROR;
2814 write_psml_finale(fh);
2817 return CF_PRINT_WRITE_ERROR;
2820 /* XXX - check for an error */
2827 write_csv_packet(capture_file *cf, frame_data *fdata,
2828 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
2833 gboolean proto_tree_needed;
2835 /* Fill in the column information, only create the protocol tree
2836 if having custom columns. */
2837 proto_tree_needed = have_custom_cols(&cf->cinfo);
2838 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2839 col_custom_prime_edt(&edt, &cf->cinfo);
2840 epan_dissect_run(&edt, pseudo_header, pd, fdata, &cf->cinfo);
2841 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2843 /* Write out the information in that tree. */
2844 proto_tree_write_csv(&edt, fh);
2846 epan_dissect_cleanup(&edt);
2852 cf_write_csv_packets(capture_file *cf, print_args_t *print_args)
2857 fh = ws_fopen(print_args->file, "w");
2859 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2861 write_csv_preamble(fh);
2864 return CF_PRINT_WRITE_ERROR;
2867 /* Iterate through the list of packets, printing the packets we were
2869 ret = process_specified_packets(cf, &print_args->range, "Writing CSV",
2870 "selected packets", TRUE,
2871 write_csv_packet, fh);
2876 /* Completed successfully. */
2880 /* Well, the user decided to abort the printing. */
2884 /* Error while printing. */
2886 return CF_PRINT_WRITE_ERROR;
2889 write_csv_finale(fh);
2892 return CF_PRINT_WRITE_ERROR;
2895 /* XXX - check for an error */
2902 write_carrays_packet(capture_file *cf _U_, frame_data *fdata,
2903 union wtap_pseudo_header *pseudo_header,
2904 const guint8 *pd, void *argsp)
2909 epan_dissect_init(&edt, TRUE, TRUE);
2910 epan_dissect_run(&edt, pseudo_header, pd, fdata, NULL);
2911 proto_tree_write_carrays(fdata->num, fh, &edt);
2912 epan_dissect_cleanup(&edt);
2918 cf_write_carrays_packets(capture_file *cf, print_args_t *print_args)
2923 fh = ws_fopen(print_args->file, "w");
2926 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2928 write_carrays_preamble(fh);
2932 return CF_PRINT_WRITE_ERROR;
2935 /* Iterate through the list of packets, printing the packets we were
2937 ret = process_specified_packets(cf, &print_args->range,
2939 "selected packets", TRUE,
2940 write_carrays_packet, fh);
2943 /* Completed successfully. */
2946 /* Well, the user decided to abort the printing. */
2949 /* Error while printing. */
2951 return CF_PRINT_WRITE_ERROR;
2954 write_carrays_finale(fh);
2958 return CF_PRINT_WRITE_ERROR;
2966 cf_find_packet_protocol_tree(capture_file *cf, const char *string,
2967 search_direction dir)
2971 mdata.string = string;
2972 mdata.string_len = strlen(string);
2973 return find_packet(cf, match_protocol_tree, &mdata, dir);
2977 cf_find_string_protocol_tree(capture_file *cf, proto_tree *tree, match_data *mdata)
2979 mdata->frame_matched = FALSE;
2980 mdata->string = convert_string_case(cf->sfilter, cf->case_type);
2981 mdata->string_len = strlen(mdata->string);
2983 /* Iterate through all the nodes looking for matching text */
2984 proto_tree_children_foreach(tree, match_subtree_text, mdata);
2985 return mdata->frame_matched ? MR_MATCHED : MR_NOTMATCHED;
2989 match_protocol_tree(capture_file *cf, frame_data *fdata, void *criterion)
2991 match_data *mdata = criterion;
2994 /* Load the frame's data. */
2995 if (!cf_read_frame(cf, fdata)) {
2996 /* Attempt to get the packet failed. */
3000 /* Construct the protocol tree, including the displayed text */
3001 epan_dissect_init(&edt, TRUE, TRUE);
3002 /* We don't need the column information */
3003 epan_dissect_run(&edt, &cf->pseudo_header, cf->pd, fdata, NULL);
3005 /* Iterate through all the nodes, seeing if they have text that matches. */
3007 mdata->frame_matched = FALSE;
3008 proto_tree_children_foreach(edt.tree, match_subtree_text, mdata);
3009 epan_dissect_cleanup(&edt);
3010 return mdata->frame_matched ? MR_MATCHED : MR_NOTMATCHED;
3014 match_subtree_text(proto_node *node, gpointer data)
3016 match_data *mdata = (match_data *) data;
3017 const gchar *string = mdata->string;
3018 size_t string_len = mdata->string_len;
3019 capture_file *cf = mdata->cf;
3020 field_info *fi = PNODE_FINFO(node);
3021 gchar label_str[ITEM_LABEL_LENGTH];
3028 /* dissection with an invisible proto tree? */
3031 if (mdata->frame_matched) {
3032 /* We already had a match; don't bother doing any more work. */
3036 /* Don't match invisible entries. */
3037 if (PROTO_ITEM_IS_HIDDEN(node))
3040 /* was a free format label produced? */
3042 label_ptr = fi->rep->representation;
3044 /* no, make a generic label */
3045 label_ptr = label_str;
3046 proto_item_fill_label(fi, label_str);
3049 /* Does that label match? */
3050 label_len = strlen(label_ptr);
3051 for (i = 0; i < label_len; i++) {
3052 c_char = label_ptr[i];
3054 c_char = toupper(c_char);
3055 if (c_char == string[c_match]) {
3057 if (c_match == string_len) {
3058 /* No need to look further; we have a match */
3059 mdata->frame_matched = TRUE;
3067 /* Recurse into the subtree, if it exists */
3068 if (node->first_child != NULL)
3069 proto_tree_children_foreach(node, match_subtree_text, mdata);
3073 cf_find_packet_summary_line(capture_file *cf, const char *string,
3074 search_direction dir)
3078 mdata.string = string;
3079 mdata.string_len = strlen(string);
3080 return find_packet(cf, match_summary_line, &mdata, dir);
3084 match_summary_line(capture_file *cf, frame_data *fdata, void *criterion)
3086 match_data *mdata = criterion;
3087 const gchar *string = mdata->string;
3088 size_t string_len = mdata->string_len;
3090 const char *info_column;
3091 size_t info_column_len;
3092 match_result result = MR_NOTMATCHED;
3098 /* Load the frame's data. */
3099 if (!cf_read_frame(cf, fdata)) {
3100 /* Attempt to get the packet failed. */
3104 /* Don't bother constructing the protocol tree */
3105 epan_dissect_init(&edt, FALSE, FALSE);
3106 /* Get the column information */
3107 epan_dissect_run(&edt, &cf->pseudo_header, cf->pd, fdata, &cf->cinfo);
3109 /* Find the Info column */
3110 for (colx = 0; colx < cf->cinfo.num_cols; colx++) {
3111 if (cf->cinfo.fmt_matx[colx][COL_INFO]) {
3112 /* Found it. See if we match. */
3113 info_column = edt.pi.cinfo->col_data[colx];
3114 info_column_len = strlen(info_column);
3115 for (i = 0; i < info_column_len; i++) {
3116 c_char = info_column[i];
3118 c_char = toupper(c_char);
3119 if (c_char == string[c_match]) {
3121 if (c_match == string_len) {
3122 result = MR_MATCHED;
3131 epan_dissect_cleanup(&edt);
3138 } cbs_t; /* "Counted byte string" */
3141 cf_find_packet_data(capture_file *cf, const guint8 *string, size_t string_size,
3142 search_direction dir)
3147 info.data_len = string_size;
3149 /* String or hex search? */
3151 /* String search - what type of string? */
3152 switch (cf->scs_type) {
3154 case SCS_ASCII_AND_UNICODE:
3155 return find_packet(cf, match_ascii_and_unicode, &info, dir);
3158 return find_packet(cf, match_ascii, &info, dir);
3161 return find_packet(cf, match_unicode, &info, dir);
3164 g_assert_not_reached();
3168 return find_packet(cf, match_binary, &info, dir);
3172 match_ascii_and_unicode(capture_file *cf, frame_data *fdata, void *criterion)
3174 cbs_t *info = criterion;
3175 const guint8 *ascii_text = info->data;
3176 size_t textlen = info->data_len;
3177 match_result result;
3183 /* Load the frame's data. */
3184 if (!cf_read_frame(cf, fdata)) {
3185 /* Attempt to get the packet failed. */
3189 result = MR_NOTMATCHED;
3190 buf_len = fdata->pkt_len;
3192 while (i < buf_len) {
3195 c_char = toupper(c_char);
3196 if (c_char != '\0') {
3197 if (c_char == ascii_text[c_match]) {
3199 if (c_match == textlen) {
3200 result = MR_MATCHED;
3201 cf->search_pos = i; /* Save the position of the last character
3202 for highlighting the field. */
3207 g_assert(i>=c_match);
3208 i -= (guint32)c_match;
3218 match_ascii(capture_file *cf, frame_data *fdata, void *criterion)
3220 cbs_t *info = criterion;
3221 const guint8 *ascii_text = info->data;
3222 size_t textlen = info->data_len;
3223 match_result result;
3229 /* Load the frame's data. */
3230 if (!cf_read_frame(cf, fdata)) {
3231 /* Attempt to get the packet failed. */
3235 result = MR_NOTMATCHED;
3236 buf_len = fdata->pkt_len;
3238 while (i < buf_len) {
3241 c_char = toupper(c_char);
3242 if (c_char == ascii_text[c_match]) {
3244 if (c_match == textlen) {
3245 result = MR_MATCHED;
3246 cf->search_pos = i; /* Save the position of the last character
3247 for highlighting the field. */
3252 g_assert(i>=c_match);
3253 i -= (guint32)c_match;
3263 match_unicode(capture_file *cf, frame_data *fdata, void *criterion)
3265 cbs_t *info = criterion;
3266 const guint8 *ascii_text = info->data;
3267 size_t textlen = info->data_len;
3268 match_result result;
3274 /* Load the frame's data. */
3275 if (!cf_read_frame(cf, fdata)) {
3276 /* Attempt to get the packet failed. */
3280 result = MR_NOTMATCHED;
3281 buf_len = fdata->pkt_len;
3283 while (i < buf_len) {
3286 c_char = toupper(c_char);
3287 if (c_char == ascii_text[c_match]) {
3289 if (c_match == textlen) {
3290 result = MR_MATCHED;
3291 cf->search_pos = i; /* Save the position of the last character
3292 for highlighting the field. */
3298 g_assert(i>=(c_match*2));
3299 i -= (guint32)c_match*2;
3308 match_binary(capture_file *cf, frame_data *fdata, void *criterion)
3310 cbs_t *info = criterion;
3311 const guint8 *binary_data = info->data;
3312 size_t datalen = info->data_len;
3313 match_result result;
3318 /* Load the frame's data. */
3319 if (!cf_read_frame(cf, fdata)) {
3320 /* Attempt to get the packet failed. */
3324 result = MR_NOTMATCHED;
3325 buf_len = fdata->pkt_len;
3327 while (i < buf_len) {
3328 if (cf->pd[i] == binary_data[c_match]) {
3330 if (c_match == datalen) {
3331 result = MR_MATCHED;
3332 cf->search_pos = i; /* Save the position of the last character
3333 for highlighting the field. */
3338 g_assert(i>=c_match);
3339 i -= (guint32)c_match;
3348 cf_find_packet_dfilter(capture_file *cf, dfilter_t *sfcode,
3349 search_direction dir)
3351 return find_packet(cf, match_dfilter, sfcode, dir);
3355 cf_find_packet_dfilter_string(capture_file *cf, const char *filter,
3356 search_direction dir)
3361 if (!dfilter_compile(filter, &sfcode)) {
3363 * XXX - this shouldn't happen, as the filter string is machine
3368 if (sfcode == NULL) {
3370 * XXX - this shouldn't happen, as the filter string is machine
3375 result = find_packet(cf, match_dfilter, sfcode, dir);
3376 dfilter_free(sfcode);
3381 match_dfilter(capture_file *cf, frame_data *fdata, void *criterion)
3383 dfilter_t *sfcode = criterion;
3385 match_result result;
3387 /* Load the frame's data. */
3388 if (!cf_read_frame(cf, fdata)) {
3389 /* Attempt to get the packet failed. */
3393 epan_dissect_init(&edt, TRUE, FALSE);
3394 epan_dissect_prime_dfilter(&edt, sfcode);
3395 epan_dissect_run(&edt, &cf->pseudo_header, cf->pd, fdata, NULL);
3396 result = dfilter_apply_edt(sfcode, &edt) ? MR_MATCHED : MR_NOTMATCHED;
3397 epan_dissect_cleanup(&edt);
3402 cf_find_packet_marked(capture_file *cf, search_direction dir)
3404 return find_packet(cf, match_marked, NULL, dir);
3408 match_marked(capture_file *cf _U_, frame_data *fdata, void *criterion _U_)
3410 return fdata->flags.marked ? MR_MATCHED : MR_NOTMATCHED;
3414 cf_find_packet_time_reference(capture_file *cf, search_direction dir)
3416 return find_packet(cf, match_time_reference, NULL, dir);
3420 match_time_reference(capture_file *cf _U_, frame_data *fdata, void *criterion _U_)
3422 return fdata->flags.ref_time ? MR_MATCHED : MR_NOTMATCHED;
3426 find_packet(capture_file *cf,
3427 match_result (*match_function)(capture_file *, frame_data *, void *),
3428 void *criterion, search_direction dir)
3430 frame_data *start_fd;
3433 frame_data *new_fd = NULL;
3434 progdlg_t *progbar = NULL;
3439 GTimeVal start_time;
3440 gchar status_str[100];
3441 int progbar_nextstep;
3442 int progbar_quantum;
3444 match_result result;
3446 start_fd = cf->current_frame;
3447 if (start_fd != NULL) {
3448 /* Iterate through the list of packets, starting at the packet we've
3449 picked, calling a routine to run the filter on the packet, see if
3450 it matches, and stop if so. */
3452 framenum = start_fd->num;
3454 /* Update the progress bar when it gets to this value. */
3455 progbar_nextstep = 0;
3456 /* When we reach the value that triggers a progress bar update,
3457 bump that value by this amount. */
3458 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
3459 /* Progress so far. */
3463 g_get_current_time(&start_time);
3465 title = cf->sfilter?cf->sfilter:"";
3467 /* Create the progress bar if necessary.
3468 We check on every iteration of the loop, so that it takes no
3469 longer than the standard time to create it (otherwise, for a
3470 large file, we might take considerably longer than that standard
3471 time in order to get to the next progress bar step). */
3472 if (progbar == NULL)
3473 progbar = delayed_create_progress_dlg(cf->window, "Searching", title,
3474 FALSE, &stop_flag, &start_time, progbar_val);
3476 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
3477 when we update it, we have to run the GTK+ main loop to get it
3478 to repaint what's pending, and doing so may involve an "ioctl()"
3479 to see if there's any pending input from an X server, and doing
3480 that for every packet can be costly, especially on a big file. */
3481 if (count >= progbar_nextstep) {
3482 /* let's not divide by zero. I should never be started
3483 * with count == 0, so let's assert that
3485 g_assert(cf->count > 0);
3487 progbar_val = (gfloat) count / cf->count;
3489 if (progbar != NULL) {
3490 g_snprintf(status_str, sizeof(status_str),
3491 "%4u of %u packets", count, cf->count);
3492 update_progress_dlg(progbar, progbar_val, status_str);
3495 progbar_nextstep += progbar_quantum;
3499 /* Well, the user decided to abort the search. Go back to the
3500 frame where we started. */
3505 /* Go past the current frame. */
3506 if (dir == SD_BACKWARD) {
3507 /* Go on to the previous frame. */
3508 if (framenum == 1) {
3510 * XXX - other apps have a bit more of a detailed message
3511 * for this, and instead of offering "OK" and "Cancel",
3512 * they offer things such as "Continue" and "Cancel";
3513 * we need an API for popping up alert boxes with
3514 * {Verb} and "Cancel".
3517 if (prefs.gui_find_wrap)
3519 statusbar_push_temporary_msg("Search reached the beginning. Continuing at end.");
3520 framenum = cf->count; /* wrap around */
3524 statusbar_push_temporary_msg("Search reached the beginning.");
3525 framenum = start_fd->num; /* stay on previous packet */
3530 /* Go on to the next frame. */
3531 if (framenum == cf->count) {
3532 if (prefs.gui_find_wrap)
3534 statusbar_push_temporary_msg("Search reached the end. Continuing at beginning.");
3535 framenum = 1; /* wrap around */
3539 statusbar_push_temporary_msg("Search reached the end.");
3540 framenum = start_fd->num; /* stay on previous packet */
3545 fdata = frame_data_sequence_find(cf->frames, framenum);
3549 /* Is this packet in the display? */
3550 if (fdata->flags.passed_dfilter) {
3551 /* Yes. Does it match the search criterion? */
3552 result = (*match_function)(cf, fdata, criterion);
3553 if (result == MR_ERROR) {
3554 /* Error; our caller has reported the error. Go back to the frame
3555 where we started. */
3558 } else if (result == MR_MATCHED) {
3559 /* Yes. Go to the new frame. */
3565 if (fdata == start_fd) {
3566 /* We're back to the frame we were on originally, and that frame
3567 doesn't match the search filter. The search failed. */
3572 /* We're done scanning the packets; destroy the progress bar if it
3574 if (progbar != NULL)
3575 destroy_progress_dlg(progbar);
3578 if (new_fd != NULL) {
3579 /* Find and select */
3580 cf->search_in_progress = TRUE;
3581 found = packet_list_select_row_from_data(new_fd);
3582 cf->search_in_progress = FALSE;
3583 cf->search_pos = 0; /* Reset the position */
3585 /* We didn't find a row corresponding to this frame.
3586 This means that the frame isn't being displayed currently,
3587 so we can't select it. */
3588 simple_message_box(ESD_TYPE_INFO, NULL,
3589 "The capture file is probably not fully dissected.",
3590 "End of capture exceeded!");
3593 return TRUE; /* success */
3595 return FALSE; /* failure */
3599 cf_goto_frame(capture_file *cf, guint fnumber)
3603 fdata = frame_data_sequence_find(cf->frames, fnumber);
3605 if (fdata == NULL) {
3606 /* we didn't find a packet with that packet number */
3607 statusbar_push_temporary_msg("There is no packet number %u.", fnumber);
3608 return FALSE; /* we failed to go to that packet */
3610 if (!fdata->flags.passed_dfilter) {
3611 /* that packet currently isn't displayed */
3612 /* XXX - add it to the set of displayed packets? */
3613 statusbar_push_temporary_msg("Packet number %u isn't displayed.", fnumber);
3614 return FALSE; /* we failed to go to that packet */
3617 if (!packet_list_select_row_from_data(fdata)) {
3618 /* We didn't find a row corresponding to this frame.
3619 This means that the frame isn't being displayed currently,
3620 so we can't select it. */
3621 simple_message_box(ESD_TYPE_INFO, NULL,
3622 "The capture file is probably not fully dissected.",
3623 "End of capture exceeded!");
3626 return TRUE; /* we got to that packet */
3630 cf_goto_top_frame(void)
3632 /* Find and select */
3633 packet_list_select_first_row();
3634 return TRUE; /* we got to that packet */
3638 cf_goto_bottom_frame(void)
3640 /* Find and select */
3641 packet_list_select_last_row();
3642 return TRUE; /* we got to that packet */
3646 * Go to frame specified by currently selected protocol tree item.
3649 cf_goto_framenum(capture_file *cf)
3651 header_field_info *hfinfo;
3654 if (cf->finfo_selected) {
3655 hfinfo = cf->finfo_selected->hfinfo;
3657 if (hfinfo->type == FT_FRAMENUM) {
3658 framenum = fvalue_get_uinteger(&cf->finfo_selected->value);
3660 return cf_goto_frame(cf, framenum);
3667 /* Select the packet on a given row. */
3669 cf_select_packet(capture_file *cf, int row)
3671 epan_dissect_t *old_edt;
3674 /* Get the frame data struct pointer for this frame */
3675 fdata = packet_list_get_row_data(row);
3677 if (fdata == NULL) {
3678 /* XXX - if a GtkCList's selection mode is GTK_SELECTION_BROWSE, when
3679 the first entry is added to it by "real_insert_row()", that row
3680 is selected (see "real_insert_row()", in "ui/gtk/gtkclist.c", in both
3681 our version and the vanilla GTK+ version).
3683 This means that a "select-row" signal is emitted; this causes
3684 "packet_list_select_cb()" to be called, which causes "cf_select_packet()"
3687 "cf_select_packet()" fetches, above, the data associated with the
3688 row that was selected; however, as "gtk_clist_append()", which
3689 called "real_insert_row()", hasn't yet returned, we haven't yet
3690 associated any data with that row, so we get back a null pointer.
3692 We can't assume that there's only one frame in the frame list,
3693 either, as we may be filtering the display.
3695 We therefore assume that, if "row" is 0, i.e. the first row
3696 is being selected, and "cf->first_displayed" equals
3697 "cf->last_displayed", i.e. there's only one frame being
3698 displayed, that frame is the frame we want.
3700 This means we have to set "cf->first_displayed" and
3701 "cf->last_displayed" before adding the row to the
3702 GtkCList; see the comment in "add_packet_to_packet_list()". */
3704 if (row == 0 && cf->first_displayed == cf->last_displayed)
3705 fdata = frame_data_sequence_find(cf->frames, cf->first_displayed);
3708 /* If fdata _still_ isn't set simply give up. */
3709 if (fdata == NULL) {
3713 /* Get the data in that frame. */
3714 if (!cf_read_frame (cf, fdata)) {
3718 /* Record that this frame is the current frame. */
3719 cf->current_frame = fdata;
3720 cf->current_row = row;
3723 /* Create the logical protocol tree. */
3724 /* We don't need the columns here. */
3725 cf->edt = epan_dissect_new(TRUE, TRUE);
3727 tap_build_interesting(cf->edt);
3728 epan_dissect_run(cf->edt, &cf->pseudo_header, cf->pd, cf->current_frame,
3731 dfilter_macro_build_ftv_cache(cf->edt->tree);
3733 cf_callback_invoke(cf_cb_packet_selected, cf);
3735 if (old_edt != NULL)
3736 epan_dissect_free(old_edt);
3740 /* Unselect the selected packet, if any. */
3742 cf_unselect_packet(capture_file *cf)
3744 epan_dissect_t *old_edt = cf->edt;
3748 /* No packet is selected. */
3749 cf->current_frame = NULL;
3750 cf->current_row = 0;
3752 cf_callback_invoke(cf_cb_packet_unselected, cf);
3754 /* No protocol tree means no selected field. */
3755 cf_unselect_field(cf);
3757 /* Destroy the epan_dissect_t for the unselected packet. */
3758 if (old_edt != NULL)
3759 epan_dissect_free(old_edt);
3762 /* Unset the selected protocol tree field, if any. */
3764 cf_unselect_field(capture_file *cf)
3766 cf->finfo_selected = NULL;
3768 cf_callback_invoke(cf_cb_field_unselected, cf);
3772 * Mark a particular frame.
3775 cf_mark_frame(capture_file *cf, frame_data *frame)
3777 if (! frame->flags.marked) {
3778 frame->flags.marked = TRUE;
3779 if (cf->count > cf->marked_count)
3785 * Unmark a particular frame.
3788 cf_unmark_frame(capture_file *cf, frame_data *frame)
3790 if (frame->flags.marked) {
3791 frame->flags.marked = FALSE;
3792 if (cf->marked_count > 0)
3798 * Ignore a particular frame.
3801 cf_ignore_frame(capture_file *cf, frame_data *frame)
3803 if (! frame->flags.ignored) {
3804 frame->flags.ignored = TRUE;
3805 if (cf->count > cf->ignored_count)
3806 cf->ignored_count++;
3811 * Un-ignore a particular frame.
3814 cf_unignore_frame(capture_file *cf, frame_data *frame)
3816 if (frame->flags.ignored) {
3817 frame->flags.ignored = FALSE;
3818 if (cf->ignored_count > 0)
3819 cf->ignored_count--;
3824 * Read the comment in SHB block
3828 cf_read_shb_comment(capture_file *cf)
3830 wtapng_section_t *shb_inf;
3831 const gchar *temp_str;
3833 /* Get info from SHB */
3834 shb_inf = wtap_file_get_shb_info(cf->wth);
3835 if (shb_inf == NULL)
3837 temp_str = shb_inf->opt_comment;
3845 cf_update_capture_comment(capture_file *cf, gchar *comment)
3847 wtapng_section_t *shb_inf;
3849 /* Get info from SHB */
3850 shb_inf = wtap_file_get_shb_info(cf->wth);
3852 /* See if the comment has changed or not */
3853 if (shb_inf && shb_inf->opt_comment) {
3854 if (strcmp(shb_inf->opt_comment, comment) == 0) {
3863 /* The comment has changed, let's update it */
3864 wtap_write_shb_comment(cf->wth, comment);
3865 /* Mark the file as having unsaved changes */
3866 cf->unsaved_changes = TRUE;
3870 cf_update_packet_comment(capture_file *cf, frame_data *fdata, gchar *comment)
3872 if (fdata->opt_comment != NULL) {
3873 /* OK, remove the old comment. */
3874 g_free(fdata->opt_comment);
3875 fdata->opt_comment = NULL;
3876 cf->packet_comment_count--;
3878 if (comment != NULL) {
3879 /* Add the new comment. */
3880 fdata->opt_comment = comment;
3881 cf->packet_comment_count++;
3884 /* OK, we have unsaved changes. */
3885 cf->unsaved_changes = TRUE;
3889 * Does this capture file have any comments?
3892 cf_has_comments(capture_file *cf)
3894 return (cf_read_shb_comment(cf) != NULL || cf->packet_comment_count != 0);
3901 } save_callback_args_t;
3904 * Save a capture to a file, in a particular format, saving either
3905 * all packets, all currently-displayed packets, or all marked packets.
3907 * Returns TRUE if it succeeds, FALSE otherwise; if it fails, it pops
3908 * up a message box for the failure.
3911 save_packet(capture_file *cf _U_, frame_data *fdata,
3912 union wtap_pseudo_header *pseudo_header, const guint8 *pd,
3915 save_callback_args_t *args = argsp;
3916 struct wtap_pkthdr hdr;
3918 gchar *display_basename;
3920 /* init the wtap header for saving */
3921 /* XXX - these are the only flags that correspond to data that we have
3922 in the frame_data structure and that matter on a per-packet basis.
3924 For WTAP_HAS_CAP_LEN, either the file format has separate "captured"
3925 and "on the wire" lengths, or it doesn't.
3927 For WTAP_HAS_DROP_COUNT, Wiretap doesn't actually supply the value
3930 For WTAP_HAS_PACK_FLAGS, we currently don't save the FCS length
3931 from the packet flags. */
3932 hdr.presence_flags = 0;
3933 if (fdata->flags.has_ts)
3934 hdr.presence_flags |= WTAP_HAS_TS;
3935 if (fdata->flags.has_ts)
3936 hdr.presence_flags |= WTAP_HAS_INTERFACE_ID;
3937 hdr.ts.secs = fdata->abs_ts.secs;
3938 hdr.ts.nsecs = fdata->abs_ts.nsecs;
3939 hdr.caplen = fdata->cap_len;
3940 hdr.len = fdata->pkt_len;
3941 hdr.pkt_encap = fdata->lnk_t;
3943 hdr.interface_id = fdata->interface_id; /* identifier of the interface. */
3945 hdr.opt_comment = fdata->opt_comment; /* NULL if not available */
3948 hdr.pack_flags = /* XXX - 0 for now (any value for "we don't have it"?) */
3950 /* and save the packet */
3951 if (!wtap_dump(args->pdh, &hdr, pseudo_header, pd, &err)) {
3953 /* Wiretap error. */
3956 case WTAP_ERR_UNSUPPORTED_ENCAP:
3958 * This is a problem with the particular frame we're writing;
3959 * note that, and give the frame number.
3961 simple_error_message_box(
3962 "Frame %u has a network type that can't be saved in a \"%s\" file.",
3963 fdata->num, wtap_file_type_string(args->file_type));
3967 display_basename = g_filename_display_basename(args->fname);
3968 simple_error_message_box(
3969 "An error occurred while writing to the file \"%s\": %s.",
3970 display_basename, wtap_strerror(err));
3971 g_free(display_basename);
3976 write_failure_alert_box(args->fname, err);
3984 * Can this capture file be written out in any format using Wiretap
3985 * rather than by copying the raw data?
3988 cf_can_write_with_wiretap(capture_file *cf)
3992 for (ft = 0; ft < WTAP_NUM_FILE_TYPES; ft++) {
3993 /* To save a file with Wiretap, Wiretap has to handle that format,
3994 and its code to handle that format must be able to write a file
3995 with this file's encapsulation types. */
3996 if (wtap_dump_can_write_encaps(ft, cf->linktypes)) {
3997 /* OK, we can write it out in this type. */
4002 /* No, we couldn't save it in any format. */
4007 * Quick scan to find packet offsets.
4009 static cf_read_status_t
4010 rescan_file(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
4012 const struct wtap_pkthdr *phdr;
4017 progdlg_t *volatile progbar = NULL;
4019 volatile gint64 size;
4020 volatile float progbar_val;
4021 GTimeVal start_time;
4022 gchar status_str[100];
4023 volatile gint64 progbar_nextstep;
4024 volatile gint64 progbar_quantum;
4027 volatile int count = 0;
4029 volatile int displayed_once = 0;
4032 /* Close the old handle. */
4033 wtap_close(cf->wth);
4035 /* Open the new file. */
4036 cf->wth = wtap_open_offline(fname, err, &err_info, TRUE);
4037 if (cf->wth == NULL) {
4038 cf_open_failure_alert_box(fname, *err, err_info, FALSE, 0);
4039 return CF_READ_ERROR;
4042 /* We're scanning a file whose contents should be the same as what
4043 we had before, so we don't discard dissection state etc.. */
4046 /* Set the file name because we need it to set the follow stream filter.
4047 XXX - is that still true? We need it for other reasons, though,
4049 cf->filename = g_strdup(fname);
4051 /* Indicate whether it's a permanent or temporary file. */
4052 cf->is_tempfile = is_tempfile;
4054 /* No user changes yet. */
4055 cf->unsaved_changes = FALSE;
4057 cf->cd_t = wtap_file_type(cf->wth);
4058 cf->linktypes = g_array_sized_new(FALSE, FALSE, (guint) sizeof(int), 1);
4060 cf->snap = wtap_snapshot_length(cf->wth);
4061 if (cf->snap == 0) {
4062 /* Snapshot length not known. */
4063 cf->has_snap = FALSE;
4064 cf->snap = WTAP_MAX_PACKET_SIZE;
4066 cf->has_snap = TRUE;
4068 name_ptr = g_filename_display_basename(cf->filename);
4070 cf_callback_invoke(cf_cb_file_rescan_started, cf);
4072 /* Record whether the file is compressed.
4073 XXX - do we know this at open time? */
4074 cf->iscompressed = wtap_iscompressed(cf->wth);
4076 /* Find the size of the file. */
4077 size = wtap_file_size(cf->wth, NULL);
4079 /* Update the progress bar when it gets to this value. */
4080 progbar_nextstep = 0;
4081 /* When we reach the value that triggers a progress bar update,
4082 bump that value by this amount. */
4084 progbar_quantum = size/N_PROGBAR_UPDATES;
4085 if (progbar_quantum < MIN_QUANTUM)
4086 progbar_quantum = MIN_QUANTUM;
4088 progbar_quantum = 0;
4089 /* Progress so far. */
4093 g_get_current_time(&start_time);
4096 phdr = wtap_phdr(cf->wth);
4097 while ((wtap_read(cf->wth, err, &err_info, &data_offset))) {
4099 fdata = frame_data_sequence_find(cf->frames, framenum);
4100 fdata->file_off = data_offset;
4103 file_pos = wtap_read_so_far(cf->wth);
4105 /* Create the progress bar if necessary.
4106 * Check whether it should be created or not every MIN_NUMBER_OF_PACKET
4108 if ((progbar == NULL) && !(count % MIN_NUMBER_OF_PACKET)) {
4109 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
4110 progbar = delayed_create_progress_dlg(cf->window, "Rescanning", name_ptr,
4111 TRUE, &stop_flag, &start_time, progbar_val);
4114 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
4115 when we update it, we have to run the GTK+ main loop to get it
4116 to repaint what's pending, and doing so may involve an "ioctl()"
4117 to see if there's any pending input from an X server, and doing
4118 that for every packet can be costly, especially on a big file. */
4119 if (file_pos >= progbar_nextstep) {
4120 if (progbar != NULL) {
4121 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
4122 /* update the packet bar content on the first run or frequently on very large files */
4124 if (progbar_quantum > 500000 || displayed_once == 0) {
4125 if ((auto_scroll_live || displayed_once == 0 || cf->displayed_count < 1000) && cf->count != 0) {
4127 packets_bar_update();
4130 #endif /* HAVE_LIBPCAP */
4131 update_progress_dlg(progbar, progbar_val, status_str);
4133 progbar_nextstep += progbar_quantum;
4138 /* Well, the user decided to abort the rescan. Sadly, as this
4139 isn't a reread, recovering is difficult, so we'll just
4140 close the current capture. */
4144 /* Add this packet's link-layer encapsulation type to cf->linktypes, if
4145 it's not already there.
4146 XXX - yes, this is O(N), so if every packet had a different
4147 link-layer encapsulation type, it'd be O(N^2) to read the file, but
4148 there are probably going to be a small number of encapsulation types
4150 cf_add_encapsulation_type(cf, phdr->pkt_encap);
4153 /* Free the display name */
4156 /* We're done reading the file; destroy the progress bar if it was created. */
4157 if (progbar != NULL)
4158 destroy_progress_dlg(progbar);
4160 /* We're done reading sequentially through the file. */
4161 cf->state = FILE_READ_DONE;
4163 /* Close the sequential I/O side, to free up memory it requires. */
4164 wtap_sequential_close(cf->wth);
4166 /* compute the time it took to load the file */
4167 compute_elapsed(&start_time);
4169 /* Set the file encapsulation type now; we don't know what it is until
4170 we've looked at all the packets, as we don't know until then whether
4171 there's more than one type (and thus whether it's
4172 WTAP_ENCAP_PER_PACKET). */
4173 cf->lnk_t = wtap_file_encap(cf->wth);
4175 cf_callback_invoke(cf_cb_file_rescan_finished, cf);
4178 /* Our caller will give up at this point. */
4179 return CF_READ_ABORTED;
4183 /* Put up a message box noting that the read failed somewhere along
4184 the line. Don't throw out the stuff we managed to read, though,
4188 case WTAP_ERR_UNSUPPORTED:
4189 simple_error_message_box(
4190 "The capture file contains record data that Wireshark doesn't support.\n(%s)",
4195 case WTAP_ERR_UNSUPPORTED_ENCAP:
4196 simple_error_message_box(
4197 "The capture file has a packet with a network type that Wireshark doesn't support.\n(%s)",
4202 case WTAP_ERR_CANT_READ:
4203 simple_error_message_box(
4204 "An attempt to read from the capture file failed for"
4205 " some unknown reason.");
4208 case WTAP_ERR_SHORT_READ:
4209 simple_error_message_box(
4210 "The capture file appears to have been cut short"
4211 " in the middle of a packet.");
4214 case WTAP_ERR_BAD_FILE:
4215 simple_error_message_box(
4216 "The capture file appears to be damaged or corrupt.\n(%s)",
4221 case WTAP_ERR_DECOMPRESS:
4222 simple_error_message_box(
4223 "The compressed capture file appears to be damaged or corrupt.\n"
4229 simple_error_message_box(
4230 "An error occurred while reading the"
4231 " capture file: %s.", wtap_strerror(*err));
4234 return CF_READ_ERROR;
4240 cf_save_packets(capture_file *cf, const char *fname, guint save_format,
4241 gboolean compressed, gboolean discard_comments,
4242 gboolean dont_reopen)
4244 gchar *fname_new = NULL;
4253 save_callback_args_t callback_args;
4255 gchar *display_basename;
4260 cf_callback_invoke(cf_cb_file_save_started, (gpointer)fname);
4262 if (save_format == cf->cd_t && compressed == cf->iscompressed
4263 && !discard_comments && !cf->unsaved_changes) {
4264 /* We're saving in the format it's already in, and we're
4265 not discarding comments, and there are no changes we have
4266 in memory that aren't saved to the file, so we can just move
4267 or copy the raw data. */
4269 if (cf->is_tempfile) {
4270 /* The file being saved is a temporary file from a live
4271 capture, so it doesn't need to stay around under that name;
4272 first, try renaming the capture buffer file to the new name.
4273 This acts as a "safe save", in that, if the file already
4274 exists, the existing file will be removed only if the rename
4277 Sadly, on Windows, as we have the current capture file
4278 open, even MoveFileEx() with MOVEFILE_REPLACE_EXISTING
4279 (to cause the rename to remove an existing target), as
4280 done by ws_stdio_rename() (ws_rename() is #defined to
4281 be ws_stdio_rename() on Windows) will fail.
4283 According to the MSDN documentation for CreateFile(), if,
4284 when we open a capture file, we were to directly do a CreateFile(),
4285 opening with FILE_SHARE_DELETE|FILE_SHARE_READ, and then
4286 convert it to a file descriptor with _open_osfhandle(),
4287 that would allow the file to be renamed out from under us.
4289 However, that doesn't work in practice. Perhaps the problem
4290 is that the process doing the rename is the process that
4291 has the file open. */
4293 if (ws_rename(cf->filename, fname) == 0) {
4294 /* That succeeded - there's no need to copy the source file. */
4295 how_to_save = SAVE_WITH_MOVE;
4297 if (errno == EXDEV) {
4298 /* They're on different file systems, so we have to copy the
4300 how_to_save = SAVE_WITH_COPY;
4302 /* The rename failed, but not because they're on different
4303 file systems - put up an error message. (Or should we
4304 just punt and try to copy? The only reason why I'd
4305 expect the rename to fail and the copy to succeed would
4306 be if we didn't have permission to remove the file from
4307 the temporary directory, and that might be fixable - but
4308 is it worth requiring the user to go off and fix it?) */
4309 cf_rename_failure_alert_box(fname, errno);
4314 how_to_save = SAVE_WITH_COPY;
4317 /* It's a permanent file, so we should copy it, and not remove the
4319 how_to_save = SAVE_WITH_COPY;
4322 if (how_to_save == SAVE_WITH_COPY) {
4323 /* Copy the file, if we haven't moved it. If we're overwriting
4324 an existing file, we do it with a "safe save", by writing
4325 to a new file and, if the write succeeds, renaming the
4326 new file on top of the old file. */
4327 if (file_exists(fname)) {
4328 fname_new = g_strdup_printf("%s~", fname);
4329 if (!copy_file_binary_mode(cf->filename, fname_new))
4332 if (!copy_file_binary_mode(cf->filename, fname))
4337 /* Either we're saving in a different format or we're saving changes,
4338 such as added, modified, or removed comments, that haven't yet
4339 been written to the underlying file; we can't do that by copying
4340 or moving the capture file, we have to do it by writing the packets
4343 wtapng_section_t *shb_hdr = NULL;
4344 wtapng_iface_descriptions_t *idb_inf = NULL;
4347 shb_hdr = wtap_file_get_shb_info(cf->wth);
4348 idb_inf = wtap_file_get_idb_info(cf->wth);
4350 /* Determine what file encapsulation type we should use. */
4351 encap = wtap_dump_file_encap_type(cf->linktypes);
4353 if (file_exists(fname)) {
4354 /* We're overwriting an existing file; write out to a new file,
4355 and, if that succeeds, rename the new file on top of the
4356 old file. That makes this a "safe save", so that we don't
4357 lose the old file if we have a problem writing out the new
4358 file. (If the existing file is the current capture file,
4359 we *HAVE* to do that, otherwise we're overwriting the file
4360 from which we're reading the packets that we're writing!) */
4361 fname_new = g_strdup_printf("%s~", fname);
4362 pdh = wtap_dump_open_ng(fname_new, save_format, encap, cf->snap,
4363 compressed, shb_hdr, idb_inf, &err);
4365 pdh = wtap_dump_open_ng(fname, save_format, encap, cf->snap,
4366 compressed, shb_hdr, idb_inf, &err);
4372 cf_open_failure_alert_box(fname, err, NULL, TRUE, save_format);
4376 /* Add address resolution */
4377 wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list());
4379 /* Iterate through the list of packets, processing all the packets. */
4380 callback_args.pdh = pdh;
4381 callback_args.fname = fname;
4382 callback_args.file_type = save_format;
4383 switch (process_specified_packets(cf, NULL, "Saving", "packets",
4384 TRUE, save_packet, &callback_args)) {
4387 /* Completed successfully. */
4391 /* The user decided to abort the saving.
4392 If we're writing to a temporary file, remove it.
4393 XXX - should we do so even if we're not writing to a
4395 wtap_dump_close(pdh, &err);
4396 if (fname_new != NULL)
4397 ws_unlink(fname_new);
4398 cf_callback_invoke(cf_cb_file_save_stopped, NULL);
4399 return CF_WRITE_ABORTED;
4402 /* Error while saving.
4403 If we're writing to a temporary file, remove it. */
4404 if (fname_new != NULL)
4405 ws_unlink(fname_new);
4406 wtap_dump_close(pdh, &err);
4410 if (!wtap_dump_close(pdh, &err)) {
4411 cf_close_failure_alert_box(fname, err);
4415 how_to_save = SAVE_WITH_WTAP;
4418 if (fname_new != NULL) {
4419 /* We wrote out to fname_new, and should rename it on top of
4420 fname. fname_new is now closed, so that should be possible even
4421 on Windows. However, on Windows, we first need to close whatever
4422 file descriptors we have open for fname. */
4424 wtap_fdclose(cf->wth);
4426 /* Now do the rename. */
4427 if (ws_rename(fname_new, fname) == -1) {
4428 /* Well, the rename failed. */
4429 cf_rename_failure_alert_box(fname, errno);
4431 /* Attempt to reopen the random file descriptor using the
4432 current file's filename. (At this point, the sequential
4433 file descriptor is closed.) */
4434 if (!wtap_fdreopen(cf->wth, cf->filename, &err)) {
4435 /* Oh, well, we're screwed. */
4436 display_basename = g_filename_display_basename(cf->filename);
4437 simple_error_message_box(
4438 file_open_error_message(err, FALSE), display_basename);
4439 g_free(display_basename);
4446 cf_callback_invoke(cf_cb_file_save_finished, NULL);
4447 cf->unsaved_changes = FALSE;
4450 switch (how_to_save) {
4452 case SAVE_WITH_MOVE:
4453 /* We just moved the file, so the wtap structure refers to the
4454 new file, and all the information other than the filename
4455 and the "is temporary" status applies to the new file; just
4457 g_free(cf->filename);
4458 cf->filename = g_strdup(fname);
4459 cf->is_tempfile = FALSE;
4460 cf_callback_invoke(cf_cb_file_fast_save_finished, cf);
4463 case SAVE_WITH_COPY:
4464 /* We just copied the file, s all the information other than
4465 the wtap structure, the filename, and the "is temporary"
4466 status applies to the new file; just update that. */
4467 wtap_close(cf->wth);
4468 cf->wth = wtap_open_offline(fname, &err, &err_info, TRUE);
4469 if (cf->wth == NULL) {
4470 cf_open_failure_alert_box(fname, err, err_info, FALSE, 0);
4473 g_free(cf->filename);
4474 cf->filename = g_strdup(fname);
4475 cf->is_tempfile = FALSE;
4477 cf_callback_invoke(cf_cb_file_fast_save_finished, cf);
4480 case SAVE_WITH_WTAP:
4481 /* Open and read the file we saved to.
4483 XXX - this is somewhat of a waste; we already have the
4484 packets, all this gets us is updated file type information
4485 (which we could just stuff into "cf"), and having the new
4486 file be the one we have opened and from which we're reading
4487 the data, and it means we have to spend time opening and
4488 reading the file, which could be a significant amount of
4489 time if the file is large.
4491 If the capture-file-writing code were to return the
4492 seek offset of each packet it writes, we could save that
4493 in the frame_data structure for the frame, and just open
4494 the file without reading it again...
4496 ...as long as, for gzipped files, the process of writing
4497 out the file *also* generates the information needed to
4498 support fast random access to the compressed file. */
4499 if (rescan_file(cf, fname, FALSE, &err) != CF_READ_OK) {
4500 /* The rescan failed; just close the file. Either
4501 a dialog was popped up for the failure, so the
4502 user knows what happened, or they stopped the
4503 rescan, in which case they know what happened. */
4509 /* If we were told to discard the comments, do so. */
4510 if (discard_comments) {
4511 /* Remove SHB comment, if any. */
4512 wtap_write_shb_comment(cf->wth, NULL);
4514 /* Remove packet comments. */
4515 for (framenum = 1; framenum <= cf->count; framenum++) {
4516 fdata = frame_data_sequence_find(cf->frames, framenum);
4517 if (fdata->opt_comment) {
4518 g_free(fdata->opt_comment);
4519 fdata->opt_comment = NULL;
4520 cf->packet_comment_count--;
4528 if (fname_new != NULL) {
4529 /* We were trying to write to a temporary file; get rid of it if it
4530 exists. (We don't care whether this fails, as, if it fails,
4531 there's not much we can do about it. I guess if it failed for
4532 a reason other than "it doesn't exist", we could report an
4533 error, so the user knows there's a junk file that they might
4534 want to clean up.) */
4535 ws_unlink(fname_new);
4538 cf_callback_invoke(cf_cb_file_save_failed, NULL);
4539 return CF_WRITE_ERROR;
4543 cf_export_specified_packets(capture_file *cf, const char *fname,
4544 packet_range_t *range, guint save_format,
4545 gboolean compressed)
4547 gchar *fname_new = NULL;
4550 save_callback_args_t callback_args;
4551 wtapng_section_t *shb_hdr;
4552 wtapng_iface_descriptions_t *idb_inf;
4555 cf_callback_invoke(cf_cb_file_export_specified_packets_started, (gpointer)fname);
4557 packet_range_process_init(range);
4559 /* We're writing out specified packets from the specified capture
4560 file to another file. Even if all captured packets are to be
4561 written, don't special-case the operation - read each packet
4562 and then write it out if it's one of the specified ones. */
4564 shb_hdr = wtap_file_get_shb_info(cf->wth);
4565 idb_inf = wtap_file_get_idb_info(cf->wth);
4567 /* Determine what file encapsulation type we should use. */
4568 encap = wtap_dump_file_encap_type(cf->linktypes);
4570 if (file_exists(fname)) {
4571 /* We're overwriting an existing file; write out to a new file,
4572 and, if that succeeds, rename the new file on top of the
4573 old file. That makes this a "safe save", so that we don't
4574 lose the old file if we have a problem writing out the new
4575 file. (If the existing file is the current capture file,
4576 we *HAVE* to do that, otherwise we're overwriting the file
4577 from which we're reading the packets that we're writing!) */
4578 fname_new = g_strdup_printf("%s~", fname);
4579 pdh = wtap_dump_open_ng(fname_new, save_format, encap, cf->snap,
4580 compressed, shb_hdr, idb_inf, &err);
4582 pdh = wtap_dump_open_ng(fname, save_format, encap, cf->snap,
4583 compressed, shb_hdr, idb_inf, &err);
4589 cf_open_failure_alert_box(fname, err, NULL, TRUE, save_format);
4593 /* Add address resolution */
4594 wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list());
4596 /* Iterate through the list of packets, processing the packets we were
4599 XXX - we've already called "packet_range_process_init(range)", but
4600 "process_specified_packets()" will do it again. Fortunately,
4601 that's harmless in this case, as we haven't done anything to
4602 "range" since we initialized it. */
4603 callback_args.pdh = pdh;
4604 callback_args.fname = fname;
4605 callback_args.file_type = save_format;
4606 switch (process_specified_packets(cf, range, "Writing", "specified packets",
4607 TRUE, save_packet, &callback_args)) {
4610 /* Completed successfully. */
4614 /* The user decided to abort the saving.
4615 If we're writing to a temporary file, remove it.
4616 XXX - should we do so even if we're not writing to a
4618 wtap_dump_close(pdh, &err);
4619 if (fname_new != NULL)
4620 ws_unlink(fname_new);
4621 cf_callback_invoke(cf_cb_file_export_specified_packets_stopped, NULL);
4622 return CF_WRITE_ABORTED;
4626 /* Error while saving.
4627 If we're writing to a temporary file, remove it. */
4628 if (fname_new != NULL)
4629 ws_unlink(fname_new);
4630 wtap_dump_close(pdh, &err);
4634 if (!wtap_dump_close(pdh, &err)) {
4635 cf_close_failure_alert_box(fname, err);
4639 if (fname_new != NULL) {
4640 /* We wrote out to fname_new, and should rename it on top of
4641 fname; fname is now closed, so that should be possible even
4642 on Windows. Do the rename. */
4643 if (ws_rename(fname_new, fname) == -1) {
4644 /* Well, the rename failed. */
4645 cf_rename_failure_alert_box(fname, errno);
4650 cf_callback_invoke(cf_cb_file_export_specified_packets_finished, NULL);
4654 if (fname_new != NULL) {
4655 /* We were trying to write to a temporary file; get rid of it if it
4656 exists. (We don't care whether this fails, as, if it fails,
4657 there's not much we can do about it. I guess if it failed for
4658 a reason other than "it doesn't exist", we could report an
4659 error, so the user knows there's a junk file that they might
4660 want to clean up.) */
4661 ws_unlink(fname_new);
4664 cf_callback_invoke(cf_cb_file_export_specified_packets_failed, NULL);
4665 return CF_WRITE_ERROR;
4669 cf_open_failure_alert_box(const char *filename, int err, gchar *err_info,
4670 gboolean for_writing, int file_type)
4672 gchar *display_basename;
4675 /* Wiretap error. */
4676 display_basename = g_filename_display_basename(filename);
4679 case WTAP_ERR_NOT_REGULAR_FILE:
4680 simple_error_message_box(
4681 "The file \"%s\" is a \"special file\" or socket or other non-regular file.",
4685 case WTAP_ERR_RANDOM_OPEN_PIPE:
4686 /* Seen only when opening a capture file for reading. */
4687 simple_error_message_box(
4688 "The file \"%s\" is a pipe or FIFO; Wireshark can't read pipe or FIFO files.\n"
4689 "To capture from a pipe or FIFO use wireshark -i -",
4693 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
4694 /* Seen only when opening a capture file for reading. */
4695 simple_error_message_box(
4696 "The file \"%s\" isn't a capture file in a format Wireshark understands.",
4700 case WTAP_ERR_UNSUPPORTED:
4701 /* Seen only when opening a capture file for reading. */
4702 simple_error_message_box(
4703 "The file \"%s\" isn't a capture file in a format Wireshark understands.\n"
4705 display_basename, err_info);
4709 case WTAP_ERR_CANT_WRITE_TO_PIPE:
4710 /* Seen only when opening a capture file for writing. */
4711 simple_error_message_box(
4712 "The file \"%s\" is a pipe, and %s capture files can't be "
4713 "written to a pipe.",
4714 display_basename, wtap_file_type_string(file_type));
4717 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
4718 /* Seen only when opening a capture file for writing. */
4719 simple_error_message_box(
4720 "Wireshark doesn't support writing capture files in that format.");
4723 case WTAP_ERR_UNSUPPORTED_ENCAP:
4725 simple_error_message_box("Wireshark can't save this capture in that format.");
4727 simple_error_message_box(
4728 "The file \"%s\" is a capture for a network type that Wireshark doesn't support.\n"
4730 display_basename, err_info);
4735 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
4737 simple_error_message_box(
4738 "Wireshark can't save this capture in that format.");
4740 simple_error_message_box(
4741 "The file \"%s\" is a capture for a network type that Wireshark doesn't support.",
4746 case WTAP_ERR_BAD_FILE:
4747 /* Seen only when opening a capture file for reading. */
4748 simple_error_message_box(
4749 "The file \"%s\" appears to be damaged or corrupt.\n"
4751 display_basename, err_info);
4755 case WTAP_ERR_CANT_OPEN:
4757 simple_error_message_box(
4758 "The file \"%s\" could not be created for some unknown reason.",
4761 simple_error_message_box(
4762 "The file \"%s\" could not be opened for some unknown reason.",
4767 case WTAP_ERR_SHORT_READ:
4768 simple_error_message_box(
4769 "The file \"%s\" appears to have been cut short"
4770 " in the middle of a packet or other data.",
4774 case WTAP_ERR_SHORT_WRITE:
4775 simple_error_message_box(
4776 "A full header couldn't be written to the file \"%s\".",
4780 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
4781 simple_error_message_box(
4782 "This file type cannot be written as a compressed file.");
4785 case WTAP_ERR_DECOMPRESS:
4786 simple_error_message_box(
4787 "The compressed file \"%s\" appears to be damaged or corrupt.\n"
4788 "(%s)", display_basename, err_info);
4793 simple_error_message_box(
4794 "The file \"%s\" could not be %s: %s.",
4796 for_writing ? "created" : "opened",
4797 wtap_strerror(err));
4800 g_free(display_basename);
4803 open_failure_alert_box(filename, err, for_writing);
4808 * XXX - whether we mention the source pathname, the target pathname,
4809 * or both depends on the error and on what we find if we look for
4810 * one or both of them.
4813 cf_rename_failure_alert_box(const char *filename, int err)
4815 gchar *display_basename;
4817 display_basename = g_filename_display_basename(filename);
4821 /* XXX - should check whether the source exists and, if not,
4822 report it as the problem and, if so, report the destination
4824 simple_error_message_box("The path to the file \"%s\" doesn't exist.",
4829 /* XXX - if we're doing a rename after a safe save, we should
4830 probably say something else. */
4831 simple_error_message_box("You don't have permission to move the capture file to \"%s\".",
4836 /* XXX - this should probably mention both the source and destination
4838 simple_error_message_box("The file \"%s\" could not be moved: %s.",
4839 display_basename, wtap_strerror(err));
4842 g_free(display_basename);
4845 /* Check for write errors - if the file is being written to an NFS server,
4846 a write error may not show up until the file is closed, as NFS clients
4847 might not send writes to the server until the "write()" call finishes,
4848 so that the write may fail on the server but the "write()" may succeed. */
4850 cf_close_failure_alert_box(const char *filename, int err)
4852 gchar *display_basename;
4855 /* Wiretap error. */
4856 display_basename = g_filename_display_basename(filename);
4859 case WTAP_ERR_CANT_CLOSE:
4860 simple_error_message_box(
4861 "The file \"%s\" couldn't be closed for some unknown reason.",
4865 case WTAP_ERR_SHORT_WRITE:
4866 simple_error_message_box(
4867 "Not all the packets could be written to the file \"%s\".",
4872 simple_error_message_box(
4873 "An error occurred while closing the file \"%s\": %s.",
4874 display_basename, wtap_strerror(err));
4877 g_free(display_basename);
4880 We assume that a close error from the OS is really a write error. */
4881 write_failure_alert_box(filename, err);
4885 /* Reload the current capture file. */
4887 cf_reload(capture_file *cf) {
4889 gboolean is_tempfile;
4892 /* If the file could be opened, "cf_open()" calls "cf_close()"
4893 to get rid of state for the old capture file before filling in state
4894 for the new capture file. "cf_close()" will remove the file if
4895 it's a temporary file; we don't want that to happen (for one thing,
4896 it'd prevent subsequent reopens from working). Remember whether it's
4897 a temporary file, mark it as not being a temporary file, and then
4898 reopen it as the type of file it was.
4900 Also, "cf_close()" will free "cf->filename", so we must make
4901 a copy of it first. */
4902 filename = g_strdup(cf->filename);
4903 is_tempfile = cf->is_tempfile;
4904 cf->is_tempfile = FALSE;
4905 if (cf_open(cf, filename, is_tempfile, &err) == CF_OK) {
4906 switch (cf_read(cf, TRUE)) {
4910 /* Just because we got an error, that doesn't mean we were unable
4911 to read any of the file; we handle what we could get from the
4915 case CF_READ_ABORTED:
4916 /* The user bailed out of re-reading the capture file; the
4917 capture file has been closed - just free the capture file name
4918 string and return (without changing the last containing
4924 /* The open failed, so "cf->is_tempfile" wasn't set to "is_tempfile".
4925 Instead, the file was left open, so we should restore "cf->is_tempfile"
4928 XXX - change the menu? Presumably "cf_open()" will do that;
4929 make sure it does! */
4930 cf->is_tempfile = is_tempfile;
4932 /* "cf_open()" made a copy of the file name we handed it, so
4933 we should free up our copy. */
4943 * indent-tabs-mode: nil
4946 * ex: set shiftwidth=2 tabstop=8 expandtab:
4947 * :indentSize=2:tabSize=8:noTabs=true: