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 create_proto_tree, column_info *cinfo, gint64 offset);
94 static void rescan_packets(capture_file *cf, const char *action, const char *action_item, gboolean redissect);
101 static match_result match_protocol_tree(capture_file *cf, frame_data *fdata,
103 static void match_subtree_text(proto_node *node, gpointer data);
104 static match_result match_summary_line(capture_file *cf, frame_data *fdata,
106 static match_result match_narrow_and_wide(capture_file *cf, frame_data *fdata,
108 static match_result match_narrow(capture_file *cf, frame_data *fdata,
110 static match_result match_wide(capture_file *cf, frame_data *fdata,
112 static match_result match_binary(capture_file *cf, frame_data *fdata,
114 static match_result match_dfilter(capture_file *cf, frame_data *fdata,
116 static match_result match_marked(capture_file *cf, frame_data *fdata,
118 static match_result match_time_reference(capture_file *cf, frame_data *fdata,
120 static gboolean find_packet(capture_file *cf,
121 match_result (*match_function)(capture_file *, frame_data *, void *),
122 void *criterion, search_direction dir);
124 static void cf_open_failure_alert_box(const char *filename, int err,
125 gchar *err_info, gboolean for_writing,
127 static void cf_rename_failure_alert_box(const char *filename, int err);
128 static void cf_close_failure_alert_box(const char *filename, int err);
129 static void ref_time_packets(capture_file *cf);
130 /* Update the progress bar this many times when reading a file. */
131 #define N_PROGBAR_UPDATES 100
132 /* We read around 200k/100ms don't update the progress bar more often than that */
133 #define MIN_QUANTUM 200000
134 #define MIN_NUMBER_OF_PACKET 1500
137 * We could probably use g_signal_...() instead of the callbacks below but that
138 * would require linking our CLI programs to libgobject and creating an object
139 * instance for the signals.
142 cf_callback_t cb_fct;
144 } cf_callback_data_t;
146 static GList *cf_callbacks = NULL;
149 cf_callback_invoke(int event, gpointer data)
151 cf_callback_data_t *cb;
152 GList *cb_item = cf_callbacks;
154 /* there should be at least one interested */
155 g_assert(cb_item != NULL);
157 while (cb_item != NULL) {
158 cb = (cf_callback_data_t *)cb_item->data;
159 cb->cb_fct(event, data, cb->user_data);
160 cb_item = g_list_next(cb_item);
166 cf_callback_add(cf_callback_t func, gpointer user_data)
168 cf_callback_data_t *cb;
170 cb = g_new(cf_callback_data_t,1);
172 cb->user_data = user_data;
174 cf_callbacks = g_list_append(cf_callbacks, cb);
178 cf_callback_remove(cf_callback_t func)
180 cf_callback_data_t *cb;
181 GList *cb_item = cf_callbacks;
183 while (cb_item != NULL) {
184 cb = (cf_callback_data_t *)cb_item->data;
185 if (cb->cb_fct == func) {
186 cf_callbacks = g_list_remove(cf_callbacks, cb);
190 cb_item = g_list_next(cb_item);
193 g_assert_not_reached();
197 cf_timestamp_auto_precision(capture_file *cf)
200 int prec = timestamp_get_precision();
203 /* don't try to get the file's precision if none is opened */
204 if (cf->state == FILE_CLOSED) {
208 /* if we are in auto mode, set precision of current file */
209 if (prec == TS_PREC_AUTO ||
210 prec == TS_PREC_AUTO_SEC ||
211 prec == TS_PREC_AUTO_DSEC ||
212 prec == TS_PREC_AUTO_CSEC ||
213 prec == TS_PREC_AUTO_MSEC ||
214 prec == TS_PREC_AUTO_USEC ||
215 prec == TS_PREC_AUTO_NSEC)
217 switch(wtap_file_tsprecision(cf->wth)) {
218 case(WTAP_FILE_TSPREC_SEC):
219 timestamp_set_precision(TS_PREC_AUTO_SEC);
221 case(WTAP_FILE_TSPREC_DSEC):
222 timestamp_set_precision(TS_PREC_AUTO_DSEC);
224 case(WTAP_FILE_TSPREC_CSEC):
225 timestamp_set_precision(TS_PREC_AUTO_CSEC);
227 case(WTAP_FILE_TSPREC_MSEC):
228 timestamp_set_precision(TS_PREC_AUTO_MSEC);
230 case(WTAP_FILE_TSPREC_USEC):
231 timestamp_set_precision(TS_PREC_AUTO_USEC);
233 case(WTAP_FILE_TSPREC_NSEC):
234 timestamp_set_precision(TS_PREC_AUTO_NSEC);
237 g_assert_not_reached();
240 /* Set the column widths of those columns that show the time in
241 "command-line-specified" format. */
242 for (i = 0; i < cf->cinfo.num_cols; i++) {
243 if (col_has_time_fmt(&cf->cinfo, i)) {
244 packet_list_resize_column(i);
250 cf_get_computed_elapsed(void)
252 return computed_elapsed;
255 static void reset_elapsed(void)
257 computed_elapsed = 0;
261 * GLIB_CHECK_VERSION(2,28,0) adds g_get_real_time which could minimize or
264 static void compute_elapsed(GTimeVal *start_time)
269 g_get_current_time(&time_now);
271 delta_time = (time_now.tv_sec - start_time->tv_sec) * 1e6 +
272 time_now.tv_usec - start_time->tv_usec;
274 computed_elapsed = (gulong) (delta_time / 1000); /* ms */
278 cf_open(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
283 wth = wtap_open_offline(fname, err, &err_info, TRUE);
287 /* The open succeeded. Close whatever capture file we had open,
288 and fill in the information for this file. */
291 /* Cleanup all data structures used for dissection. */
292 cleanup_dissection();
293 /* Initialize all data structures used for dissection. */
296 /* We're about to start reading the file. */
297 cf->state = FILE_READ_IN_PROGRESS;
302 /* Set the file name because we need it to set the follow stream filter.
303 XXX - is that still true? We need it for other reasons, though,
305 cf->filename = g_strdup(fname);
307 /* Indicate whether it's a permanent or temporary file. */
308 cf->is_tempfile = is_tempfile;
310 /* No user changes yet. */
311 cf->unsaved_changes = FALSE;
315 cf->cd_t = wtap_file_type(cf->wth);
316 cf->linktypes = g_array_sized_new(FALSE, FALSE, (guint) sizeof(int), 1);
318 cf->packet_comment_count = 0;
319 cf->displayed_count = 0;
320 cf->marked_count = 0;
321 cf->ignored_count = 0;
322 cf->ref_time_count = 0;
323 cf->drops_known = FALSE;
325 cf->snap = wtap_snapshot_length(cf->wth);
327 /* Snapshot length not known. */
328 cf->has_snap = FALSE;
329 cf->snap = WTAP_MAX_PACKET_SIZE;
333 /* Allocate a frame_data_sequence for the frames in this file */
334 cf->frames = new_frame_data_sequence();
336 nstime_set_zero(&cf->elapsed_time);
337 nstime_set_unset(&first_ts);
342 /* Adjust timestamp precision if auto is selected, col width will be adjusted */
343 cf_timestamp_auto_precision(cf);
345 packet_list_queue_draw();
346 cf_callback_invoke(cf_cb_file_opened, cf);
348 if (cf->cd_t == WTAP_FILE_BER) {
349 /* tell the BER dissector the file name */
350 ber_set_filename(cf->filename);
353 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
354 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
359 cf_open_failure_alert_box(fname, *err, err_info, FALSE, 0);
364 * Add an encapsulation type to cf->linktypes.
367 cf_add_encapsulation_type(capture_file *cf, int encap)
371 for (i = 0; i < cf->linktypes->len; i++) {
372 if (g_array_index(cf->linktypes, gint, i) == encap)
373 return; /* it's already there */
375 /* It's not already there - add it. */
376 g_array_append_val(cf->linktypes, encap);
380 * Reset the state for the currently closed file, but don't do the
381 * UI callbacks; this is for use in "cf_open()", where we don't
382 * want the UI to go from "file open" to "file closed" back to
383 * "file open", we want it to go from "old file open" to "new file
384 * open and being read".
386 * XXX - currently, cf_open() calls cf_close(), rather than
390 cf_reset_state(capture_file *cf)
392 /* Die if we're in the middle of reading a file. */
393 g_assert(cf->state != FILE_READ_IN_PROGRESS);
399 /* We have no file open... */
400 if (cf->filename != NULL) {
401 /* If it's a temporary file, remove it. */
403 ws_unlink(cf->filename);
404 g_free(cf->filename);
407 /* ...which means we have no changes to that file to save. */
408 cf->unsaved_changes = FALSE;
410 dfilter_free(cf->rfcode);
412 if (cf->frames != NULL) {
413 free_frame_data_sequence(cf->frames);
416 #ifdef WANT_PACKET_EDITOR
417 if (cf->edited_frames) {
418 g_tree_destroy(cf->edited_frames);
419 cf->edited_frames = NULL;
422 cf_unselect_packet(cf); /* nothing to select */
423 cf->first_displayed = 0;
424 cf->last_displayed = 0;
426 /* No frames, no frame selected, no field in that frame selected. */
428 cf->current_frame = 0;
430 cf->finfo_selected = NULL;
432 /* No frame link-layer types, either. */
433 g_array_free(cf->linktypes, TRUE);
434 cf->linktypes = NULL;
436 /* Clear the packet list. */
437 packet_list_freeze();
442 nstime_set_zero(&cf->elapsed_time);
444 reset_tap_listeners();
446 /* We have no file open. */
447 cf->state = FILE_CLOSED;
450 /* Reset everything to a pristine state */
452 cf_close(capture_file *cf)
454 if (cf->state != FILE_CLOSED) {
455 cf_callback_invoke(cf_cb_file_closing, cf);
457 /* close things, if not already closed before */
458 color_filters_cleanup();
460 cleanup_dissection();
462 cf_callback_invoke(cf_cb_file_closed, cf);
467 calc_progbar_val(capture_file *cf, gint64 size, gint64 file_pos, gchar *status_str, gulong status_size)
471 progbar_val = (gfloat) file_pos / (gfloat) size;
472 if (progbar_val > 1.0) {
474 /* The file probably grew while we were reading it.
475 * Update file size, and try again.
477 size = wtap_file_size(cf->wth, NULL);
480 progbar_val = (gfloat) file_pos / (gfloat) size;
482 /* If it's still > 1, either "wtap_file_size()" failed (in which
483 * case there's not much we can do about it), or the file
484 * *shrank* (in which case there's not much we can do about
485 * it); just clip the progress value at 1.0.
487 if (progbar_val > 1.0f)
491 g_snprintf(status_str, status_size,
492 "%" G_GINT64_MODIFIER "dKB of %" G_GINT64_MODIFIER "dKB",
493 file_pos / 1024, size / 1024);
499 cf_read(capture_file *cf, gboolean reloading)
504 progdlg_t *progbar = NULL;
508 volatile gboolean create_proto_tree;
512 /* Compile the current display filter.
513 * We assume this will not fail since cf->dfilter is only set in
514 * cf_filter IFF the filter was valid.
516 compiled = dfilter_compile(cf->dfilter, &dfcode);
517 g_assert(!cf->dfilter || (compiled && dfcode));
519 /* Get the union of the flags for all tap listeners. */
520 tap_flags = union_of_tap_listener_flags();
522 (dfcode != NULL || have_filtering_tap_listeners() || (tap_flags & TL_REQUIRES_PROTO_TREE));
524 reset_tap_listeners();
526 name_ptr = g_filename_display_basename(cf->filename);
529 cf_callback_invoke(cf_cb_file_reload_started, cf);
531 cf_callback_invoke(cf_cb_file_read_started, cf);
533 /* Record whether the file is compressed.
534 XXX - do we know this at open time? */
535 cf->iscompressed = wtap_iscompressed(cf->wth);
537 /* The packet list window will be empty until the file is completly loaded */
538 packet_list_freeze();
541 g_get_current_time(&start_time);
545 int displayed_once = 0;
553 gint64 progbar_quantum;
554 gint64 progbar_nextstep;
556 gchar status_str[100];
560 cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
562 /* Find the size of the file. */
563 size = wtap_file_size(cf->wth, NULL);
565 /* Update the progress bar when it gets to this value. */
566 progbar_nextstep = 0;
567 /* When we reach the value that triggers a progress bar update,
568 bump that value by this amount. */
570 progbar_quantum = size/N_PROGBAR_UPDATES;
571 if (progbar_quantum < MIN_QUANTUM)
572 progbar_quantum = MIN_QUANTUM;
575 /* Progress so far. */
578 while ((wtap_read(cf->wth, &err, &err_info, &data_offset))) {
581 file_pos = wtap_read_so_far(cf->wth);
583 /* Create the progress bar if necessary.
584 * Check whether it should be created or not every MIN_NUMBER_OF_PACKET
586 if ((progbar == NULL) && !(count % MIN_NUMBER_OF_PACKET)) {
587 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
589 progbar = delayed_create_progress_dlg(cf->window, "Reloading", name_ptr,
590 TRUE, &stop_flag, &start_time, progbar_val);
592 progbar = delayed_create_progress_dlg(cf->window, "Loading", name_ptr,
593 TRUE, &stop_flag, &start_time, progbar_val);
596 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
597 when we update it, we have to run the GTK+ main loop to get it
598 to repaint what's pending, and doing so may involve an "ioctl()"
599 to see if there's any pending input from an X server, and doing
600 that for every packet can be costly, especially on a big file. */
601 if (file_pos >= progbar_nextstep) {
602 if (progbar != NULL) {
603 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
604 /* update the packet bar content on the first run or frequently on very large files */
606 if (progbar_quantum > 500000 || displayed_once == 0) {
607 if ((auto_scroll_live || displayed_once == 0 || cf->displayed_count < 1000) && cf->count != 0) {
609 packets_bar_update();
612 #endif /* HAVE_LIBPCAP */
613 update_progress_dlg(progbar, progbar_val, status_str);
615 progbar_nextstep += progbar_quantum;
620 /* Well, the user decided to abort the read. He/She will be warned and
621 it might be enough for him/her to work with the already loaded
623 This is especially true for very large capture files, where you don't
624 want to wait loading the whole file (which may last minutes or even
625 hours even on fast machines) just to see that it was the wrong file. */
628 read_packet(cf, dfcode, create_proto_tree, cinfo, data_offset);
631 CATCH(OutOfMemoryError) {
632 simple_message_box(ESD_TYPE_ERROR, NULL,
633 "Some infos / workarounds can be found at:\n"
634 "http://wiki.wireshark.org/KnownBugs/OutOfMemory",
635 "Sorry, but Wireshark has run out of memory and has to terminate now!");
637 /* Could we close the current capture and free up memory from that? */
639 /* we have to terminate, as we cannot recover from the memory error */
645 /* Free the display name */
648 /* Cleanup and release all dfilter resources */
649 if (dfcode != NULL) {
650 dfilter_free(dfcode);
653 /* We're done reading the file; destroy the progress bar if it was created. */
655 destroy_progress_dlg(progbar);
657 /* We're done reading sequentially through the file. */
658 cf->state = FILE_READ_DONE;
660 /* Close the sequential I/O side, to free up memory it requires. */
661 wtap_sequential_close(cf->wth);
663 /* Allow the protocol dissectors to free up memory that they
664 * don't need after the sequential run-through of the packets. */
665 postseq_cleanup_all_protocols();
667 /* compute the time it took to load the file */
668 compute_elapsed(&start_time);
670 /* Set the file encapsulation type now; we don't know what it is until
671 we've looked at all the packets, as we don't know until then whether
672 there's more than one type (and thus whether it's
673 WTAP_ENCAP_PER_PACKET). */
674 cf->lnk_t = wtap_file_encap(cf->wth);
676 cf->current_frame = frame_data_sequence_find(cf->frames, cf->first_displayed);
681 cf_callback_invoke(cf_cb_file_reload_finished, cf);
683 cf_callback_invoke(cf_cb_file_read_finished, cf);
685 /* If we have any displayed packets to select, select the first of those
686 packets by making the first row the selected row. */
687 if (cf->first_displayed != 0) {
688 packet_list_select_first_row();
692 simple_message_box(ESD_TYPE_WARN, NULL,
693 "The remaining packets in the file were discarded.\n"
695 "As a lot of packets from the original file will be missing,\n"
696 "remember to be careful when saving the current content to a file.\n",
697 "File loading was cancelled!");
698 return CF_READ_ERROR;
702 /* Put up a message box noting that the read failed somewhere along
703 the line. Don't throw out the stuff we managed to read, though,
707 case WTAP_ERR_UNSUPPORTED:
708 simple_error_message_box(
709 "The capture file contains record data that Wireshark doesn't support.\n(%s)",
714 case WTAP_ERR_UNSUPPORTED_ENCAP:
715 simple_error_message_box(
716 "The capture file has a packet with a network type that Wireshark doesn't support.\n(%s)",
721 case WTAP_ERR_CANT_READ:
722 simple_error_message_box(
723 "An attempt to read from the capture file failed for"
724 " some unknown reason.");
727 case WTAP_ERR_SHORT_READ:
728 simple_error_message_box(
729 "The capture file appears to have been cut short"
730 " in the middle of a packet.");
733 case WTAP_ERR_BAD_FILE:
734 simple_error_message_box(
735 "The capture file appears to be damaged or corrupt.\n(%s)",
740 case WTAP_ERR_DECOMPRESS:
741 simple_error_message_box(
742 "The compressed capture file appears to be damaged or corrupt.\n"
748 simple_error_message_box(
749 "An error occurred while reading the"
750 " capture file: %s.", wtap_strerror(err));
753 return CF_READ_ERROR;
760 cf_start_tail(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
762 cf_status_t cf_status;
764 cf_status = cf_open(cf, fname, is_tempfile, err);
769 cf_continue_tail(capture_file *cf, volatile int to_read, int *err)
772 int newly_displayed_packets = 0;
774 volatile gboolean create_proto_tree;
778 /* Compile the current display filter.
779 * We assume this will not fail since cf->dfilter is only set in
780 * cf_filter IFF the filter was valid.
782 compiled = dfilter_compile(cf->dfilter, &dfcode);
783 g_assert(!cf->dfilter || (compiled && dfcode));
785 /* Get the union of the flags for all tap listeners. */
786 tap_flags = union_of_tap_listener_flags();
788 (dfcode != NULL || have_filtering_tap_listeners() || (tap_flags & TL_REQUIRES_PROTO_TREE));
792 packet_list_check_end();
793 /* Don't freeze/thaw the list when doing live capture */
794 /*packet_list_freeze();*/
796 /*g_log(NULL, G_LOG_LEVEL_MESSAGE, "cf_continue_tail: %u new: %u", cf->count, to_read);*/
799 gint64 data_offset = 0;
802 cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
804 while (to_read != 0) {
805 wtap_cleareof(cf->wth);
806 if (!wtap_read(cf->wth, err, &err_info, &data_offset)) {
809 if (cf->state == FILE_READ_ABORTED) {
810 /* Well, the user decided to exit Wireshark. Break out of the
811 loop, and let the code below (which is called even if there
812 aren't any packets left to read) exit. */
815 if (read_packet(cf, dfcode, create_proto_tree, (column_info *) cinfo, data_offset) != -1) {
816 newly_displayed_packets++;
821 CATCH(OutOfMemoryError) {
822 simple_message_box(ESD_TYPE_ERROR, NULL,
823 "Some infos / workarounds can be found at:\n"
824 "http://wiki.wireshark.org/KnownBugs/OutOfMemory",
825 "Sorry, but Wireshark has run out of memory and has to terminate now!");
827 /* Could we close the current capture and free up memory from that? */
828 return CF_READ_ABORTED;
830 /* we have to terminate, as we cannot recover from the memory error */
836 /* Update the file encapsulation; it might have changed based on the
837 packets we've read. */
838 cf->lnk_t = wtap_file_encap(cf->wth);
840 /* Cleanup and release all dfilter resources */
841 if (dfcode != NULL) {
842 dfilter_free(dfcode);
845 /*g_log(NULL, G_LOG_LEVEL_MESSAGE, "cf_continue_tail: count %u state: %u err: %u",
846 cf->count, cf->state, *err);*/
848 /* Don't freeze/thaw the list when doing live capture */
849 /*packet_list_thaw();*/
850 /* With the new packet list the first packet
851 * isn't automatically selected.
853 if (!cf->current_frame)
854 packet_list_select_first_row();
856 /* moving to the end of the packet list - if the user requested so and
857 we have some new packets. */
858 if (newly_displayed_packets && auto_scroll_live && cf->count != 0)
859 packet_list_moveto_end();
861 if (cf->state == FILE_READ_ABORTED) {
862 /* Well, the user decided to exit Wireshark. Return CF_READ_ABORTED
863 so that our caller can kill off the capture child process;
864 this will cause an EOF on the pipe from the child, so
865 "cf_finish_tail()" will be called, and it will clean up
867 return CF_READ_ABORTED;
868 } else if (*err != 0) {
869 /* We got an error reading the capture file.
870 XXX - pop up a dialog box instead? */
871 g_warning("Error \"%s\" while reading: \"%s\" (\"%s\")",
872 wtap_strerror(*err), err_info, cf->filename);
875 return CF_READ_ERROR;
881 cf_fake_continue_tail(capture_file *cf) {
882 cf->state = FILE_READ_DONE;
886 cf_finish_tail(capture_file *cf, int *err)
892 gboolean create_proto_tree;
896 /* Compile the current display filter.
897 * We assume this will not fail since cf->dfilter is only set in
898 * cf_filter IFF the filter was valid.
900 compiled = dfilter_compile(cf->dfilter, &dfcode);
901 g_assert(!cf->dfilter || (compiled && dfcode));
903 /* Get the union of the flags for all tap listeners. */
904 tap_flags = union_of_tap_listener_flags();
905 cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
907 (dfcode != NULL || have_filtering_tap_listeners() || (tap_flags & TL_REQUIRES_PROTO_TREE));
909 if (cf->wth == NULL) {
911 return CF_READ_ERROR;
914 packet_list_check_end();
915 /* Don't freeze/thaw the list when doing live capture */
916 /*packet_list_freeze();*/
918 while ((wtap_read(cf->wth, err, &err_info, &data_offset))) {
919 if (cf->state == FILE_READ_ABORTED) {
920 /* Well, the user decided to abort the read. Break out of the
921 loop, and let the code below (which is called even if there
922 aren't any packets left to read) exit. */
925 read_packet(cf, dfcode, create_proto_tree, cinfo, data_offset);
928 /* Cleanup and release all dfilter resources */
929 if (dfcode != NULL) {
930 dfilter_free(dfcode);
933 /* Don't freeze/thaw the list when doing live capture */
934 /*packet_list_thaw();*/
936 if (cf->state == FILE_READ_ABORTED) {
937 /* Well, the user decided to abort the read. We're only called
938 when the child capture process closes the pipe to us (meaning
939 it's probably exited), so we can just close the capture
940 file; we return CF_READ_ABORTED so our caller can do whatever
941 is appropriate when that happens. */
943 return CF_READ_ABORTED;
946 if (auto_scroll_live && cf->count != 0)
947 packet_list_moveto_end();
949 /* We're done reading sequentially through the file. */
950 cf->state = FILE_READ_DONE;
952 /* We're done reading sequentially through the file; close the
953 sequential I/O side, to free up memory it requires. */
954 wtap_sequential_close(cf->wth);
956 /* Allow the protocol dissectors to free up memory that they
957 * don't need after the sequential run-through of the packets. */
958 postseq_cleanup_all_protocols();
960 /* Update the file encapsulation; it might have changed based on the
961 packets we've read. */
962 cf->lnk_t = wtap_file_encap(cf->wth);
964 /* Update the details in the file-set dialog, as the capture file
965 * has likely grown since we first stat-ed it */
966 fileset_update_file(cf->filename);
969 /* We got an error reading the capture file.
970 XXX - pop up a dialog box? */
972 g_warning("Error \"%s\" while reading: \"%s\" (\"%s\")",
973 wtap_strerror(*err), err_info, cf->filename);
975 return CF_READ_ERROR;
980 #endif /* HAVE_LIBPCAP */
983 cf_get_display_name(capture_file *cf)
987 /* Return a name to use in displays */
988 if (!cf->is_tempfile) {
989 /* Get the last component of the file name, and use that. */
991 displayname = g_filename_display_basename(cf->filename);
993 displayname=g_strdup("(No file)");
996 /* The file we read is a temporary file from a live capture or
997 a merge operation; we don't mention its name, but, if it's
998 from a capture, give the source of the capture. */
1000 displayname = g_strdup(cf->source);
1002 displayname = g_strdup("(Untitled)");
1008 void cf_set_tempfile_source(capture_file *cf, gchar *source) {
1014 cf->source = g_strdup(source);
1016 cf->source = g_strdup("");
1020 const gchar *cf_get_tempfile_source(capture_file *cf) {
1028 /* XXX - use a macro instead? */
1030 cf_get_packet_count(capture_file *cf)
1035 /* XXX - use a macro instead? */
1037 cf_set_packet_count(capture_file *cf, int packet_count)
1039 cf->count = packet_count;
1042 /* XXX - use a macro instead? */
1044 cf_is_tempfile(capture_file *cf)
1046 return cf->is_tempfile;
1049 void cf_set_tempfile(capture_file *cf, gboolean is_tempfile)
1051 cf->is_tempfile = is_tempfile;
1055 /* XXX - use a macro instead? */
1056 void cf_set_drops_known(capture_file *cf, gboolean drops_known)
1058 cf->drops_known = drops_known;
1061 /* XXX - use a macro instead? */
1062 void cf_set_drops(capture_file *cf, guint32 drops)
1067 /* XXX - use a macro instead? */
1068 gboolean cf_get_drops_known(capture_file *cf)
1070 return cf->drops_known;
1073 /* XXX - use a macro instead? */
1074 guint32 cf_get_drops(capture_file *cf)
1079 void cf_set_rfcode(capture_file *cf, dfilter_t *rfcode)
1081 cf->rfcode = rfcode;
1085 add_packet_to_packet_list(frame_data *fdata, capture_file *cf,
1086 dfilter_t *dfcode, gboolean create_proto_tree, column_info *cinfo,
1087 struct wtap_pkthdr *phdr, const guchar *buf,
1088 gboolean add_to_packet_list)
1093 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
1094 &first_ts, prev_dis, prev_cap);
1097 /* Dissect the frame. */
1098 epan_dissect_init(&edt, create_proto_tree, FALSE);
1100 if (dfcode != NULL) {
1101 epan_dissect_prime_dfilter(&edt, dfcode);
1104 epan_dissect_run_with_taps(&edt, phdr, buf, fdata, cinfo);
1106 /* If we don't have a display filter, set "passed_dfilter" to 1. */
1107 if (dfcode != NULL) {
1108 fdata->flags.passed_dfilter = dfilter_apply_edt(dfcode, &edt) ? 1 : 0;
1110 if (fdata->flags.passed_dfilter) {
1111 /* This frame passed the display filter but it may depend on other
1112 * (potentially not displayed) frames. Find those frames and mark them
1115 g_slist_foreach(edt.pi.dependent_frames, find_and_mark_frame_depended_upon, cf->frames);
1118 fdata->flags.passed_dfilter = 1;
1120 if (fdata->flags.passed_dfilter || fdata->flags.ref_time)
1121 cf->displayed_count++;
1123 if (add_to_packet_list) {
1124 /* We fill the needed columns from new_packet_list */
1125 row = packet_list_append(cinfo, fdata, &edt.pi);
1128 if (fdata->flags.passed_dfilter || fdata->flags.ref_time)
1130 frame_data_set_after_dissect(fdata, &cum_bytes);
1133 /* If we haven't yet seen the first frame, this is it.
1135 XXX - we must do this before we add the row to the display,
1136 as, if the display's GtkCList's selection mode is
1137 GTK_SELECTION_BROWSE, when the first entry is added to it,
1138 "cf_select_packet()" will be called, and it will fetch the row
1139 data for the 0th row, and will get a null pointer rather than
1140 "fdata", as "gtk_clist_append()" won't yet have returned and
1141 thus "gtk_clist_set_row_data()" won't yet have been called.
1143 We thus need to leave behind bread crumbs so that
1144 "cf_select_packet()" can find this frame. See the comment
1145 in "cf_select_packet()". */
1146 if (cf->first_displayed == 0)
1147 cf->first_displayed = fdata->num;
1149 /* This is the last frame we've seen so far. */
1150 cf->last_displayed = fdata->num;
1153 epan_dissect_cleanup(&edt);
1157 /* read in a new packet */
1158 /* returns the row of the new packet in the packet list or -1 if not displayed */
1160 read_packet(capture_file *cf, dfilter_t *dfcode,
1161 gboolean create_proto_tree, column_info *cinfo, gint64 offset)
1163 struct wtap_pkthdr *phdr = wtap_phdr(cf->wth);
1164 const guchar *buf = wtap_buf_ptr(cf->wth);
1171 /* Add this packet's link-layer encapsulation type to cf->linktypes, if
1172 it's not already there.
1173 XXX - yes, this is O(N), so if every packet had a different
1174 link-layer encapsulation type, it'd be O(N^2) to read the file, but
1175 there are probably going to be a small number of encapsulation types
1177 cf_add_encapsulation_type(cf, phdr->pkt_encap);
1179 /* The frame number of this packet is one more than the count of
1180 frames in the file so far. */
1181 framenum = cf->count + 1;
1183 frame_data_init(&fdlocal, framenum, phdr, offset, cum_bytes);
1188 epan_dissect_init(&edt, TRUE, FALSE);
1189 epan_dissect_prime_dfilter(&edt, cf->rfcode);
1190 epan_dissect_run(&edt, phdr, buf, &fdlocal, NULL);
1191 passed = dfilter_apply_edt(cf->rfcode, &edt);
1192 epan_dissect_cleanup(&edt);
1196 /* This does a shallow copy of fdlocal, which is good enough. */
1197 fdata = frame_data_sequence_add(cf->frames, &fdlocal);
1200 if (fdlocal.opt_comment != NULL)
1201 cf->packet_comment_count++;
1202 cf->f_datalen = offset + fdlocal.cap_len;
1204 if (!cf->redissecting) {
1205 row = add_packet_to_packet_list(fdata, cf, dfcode,
1206 create_proto_tree, cinfo,
1215 cf_merge_files(char **out_filenamep, int in_file_count,
1216 char *const *in_filenames, int file_type, gboolean do_append)
1218 merge_in_file_t *in_files, *in_file;
1223 int open_err, read_err, write_err, close_err;
1227 gboolean got_read_error = FALSE, got_write_error = FALSE;
1229 progdlg_t *progbar = NULL;
1231 gint64 f_len, file_pos;
1233 GTimeVal start_time;
1234 gchar status_str[100];
1235 gint64 progbar_nextstep;
1236 gint64 progbar_quantum;
1237 gchar *display_basename;
1238 int selected_frame_type;
1239 gboolean fake_interface_ids = FALSE;
1241 /* open the input files */
1242 if (!merge_open_in_files(in_file_count, in_filenames, &in_files,
1243 &open_err, &err_info, &err_fileno)) {
1245 cf_open_failure_alert_box(in_filenames[err_fileno], open_err, err_info,
1250 if (*out_filenamep != NULL) {
1251 out_filename = *out_filenamep;
1252 out_fd = ws_open(out_filename, O_CREAT|O_TRUNC|O_BINARY, 0600);
1256 out_fd = create_tempfile(&tmpname, "wireshark");
1259 out_filename = g_strdup(tmpname);
1260 *out_filenamep = out_filename;
1264 merge_close_in_files(in_file_count, in_files);
1266 cf_open_failure_alert_box(out_filename, open_err, NULL, TRUE, file_type);
1270 selected_frame_type = merge_select_frame_type(in_file_count, in_files);
1272 /* If we are trying to merge a number of libpcap files with different encapsulation types
1273 * change the output file type to pcapng and create SHB and IDB:s for the new file use the
1274 * interface index stored in in_files per file to change the phdr before writing the datablock.
1275 * XXX should it be an option to convert to pcapng?
1277 * We need something similar when merging pcapng files possibly with an option to say
1278 * the same interface(s) used in all in files. SHBs comments should be merged together.
1280 if ((selected_frame_type == WTAP_ENCAP_PER_PACKET)&&(file_type == WTAP_FILE_PCAP)) {
1281 /* Write output in pcapng format */
1282 wtapng_section_t *shb_hdr;
1283 wtapng_iface_descriptions_t *idb_inf, *idb_inf_merge_file;
1284 wtapng_if_descr_t int_data, *file_int_data;
1285 GString *comment_gstr;
1287 fake_interface_ids = TRUE;
1288 /* Create SHB info */
1289 shb_hdr = wtap_file_get_shb_info(in_files[0].wth);
1290 comment_gstr = g_string_new("");
1291 g_string_append_printf(comment_gstr, "%s \n",shb_hdr->opt_comment);
1292 g_string_append_printf(comment_gstr, "File created by merging: \n");
1293 file_type = WTAP_FILE_PCAPNG;
1295 for (i = 0; i < in_file_count; i++) {
1296 g_string_append_printf(comment_gstr, "File%d: %s \n",i+1,in_files[i].filename);
1298 shb_hdr->section_length = -1;
1300 shb_hdr->opt_comment = g_string_free(comment_gstr, FALSE); /* NULL if not available */
1301 shb_hdr->shb_hardware = NULL; /* NULL if not available, UTF-8 string containing the */
1302 /* description of the hardware used to create this section. */
1303 shb_hdr->shb_os = NULL; /* NULL if not available, UTF-8 string containing the name */
1304 /* of the operating system used to create this section. */
1305 shb_hdr->shb_user_appl = "Wireshark"; /* NULL if not available, UTF-8 string containing the name */
1306 /* of the application used to create this section. */
1308 /* create fake IDB info */
1309 idb_inf = g_new(wtapng_iface_descriptions_t,1);
1310 idb_inf->number_of_interfaces = in_file_count; /* TODO make this the number of DIFFERENT encapsulation types
1311 * check that snaplength is the same too?
1313 idb_inf->interface_data = g_array_new(FALSE, FALSE, sizeof(wtapng_if_descr_t));
1315 for (i = 0; i < in_file_count; i++) {
1316 idb_inf_merge_file = wtap_file_get_idb_info(in_files[i].wth);
1317 /* read the interface data from the in file to our combined interfca data */
1318 file_int_data = &g_array_index (idb_inf_merge_file->interface_data, wtapng_if_descr_t, 0);
1319 int_data.wtap_encap = file_int_data->wtap_encap;
1320 int_data.time_units_per_second = file_int_data->time_units_per_second;
1321 int_data.link_type = file_int_data->link_type;
1322 int_data.snap_len = file_int_data->snap_len;
1323 int_data.if_name = g_strdup(file_int_data->if_name);
1324 int_data.opt_comment = NULL;
1325 int_data.if_description = NULL;
1326 int_data.if_speed = 0;
1327 int_data.if_tsresol = 6;
1328 int_data.if_filter_str = NULL;
1329 int_data.bpf_filter_len = 0;
1330 int_data.if_filter_bpf_bytes = NULL;
1331 int_data.if_os = NULL;
1332 int_data.if_fcslen = -1;
1333 int_data.num_stat_entries = 0; /* Number of ISB:s */
1334 int_data.interface_statistics = NULL;
1336 g_array_append_val(idb_inf->interface_data, int_data);
1337 g_free(idb_inf_merge_file);
1339 /* Set fake interface Id in per file data */
1340 in_files[i].interface_id = i;
1343 pdh = wtap_dump_fdopen_ng(out_fd, file_type,
1344 selected_frame_type,
1345 merge_max_snapshot_length(in_file_count, in_files),
1346 FALSE /* compressed */, shb_hdr, idb_inf /* wtapng_iface_descriptions_t *idb_inf */, &open_err);
1350 merge_close_in_files(in_file_count, in_files);
1352 cf_open_failure_alert_box(out_filename, open_err, err_info, TRUE,
1359 pdh = wtap_dump_fdopen(out_fd, file_type,
1360 selected_frame_type,
1361 merge_max_snapshot_length(in_file_count, in_files),
1362 FALSE /* compressed */, &open_err);
1365 merge_close_in_files(in_file_count, in_files);
1367 cf_open_failure_alert_box(out_filename, open_err, err_info, TRUE,
1373 /* Get the sum of the sizes of all the files. */
1375 for (i = 0; i < in_file_count; i++)
1376 f_len += in_files[i].size;
1378 /* Update the progress bar when it gets to this value. */
1379 progbar_nextstep = 0;
1380 /* When we reach the value that triggers a progress bar update,
1381 bump that value by this amount. */
1382 progbar_quantum = f_len/N_PROGBAR_UPDATES;
1383 /* Progress so far. */
1387 g_get_current_time(&start_time);
1389 /* do the merge (or append) */
1392 in_file = merge_append_read_packet(in_file_count, in_files, &read_err,
1395 in_file = merge_read_packet(in_file_count, in_files, &read_err,
1397 if (in_file == NULL) {
1402 if (read_err != 0) {
1403 /* I/O error reading from in_file */
1404 got_read_error = TRUE;
1408 /* Get the sum of the data offsets in all of the files. */
1410 for (i = 0; i < in_file_count; i++)
1411 data_offset += in_files[i].data_offset;
1413 /* Create the progress bar if necessary.
1414 We check on every iteration of the loop, so that it takes no
1415 longer than the standard time to create it (otherwise, for a
1416 large file, we might take considerably longer than that standard
1417 time in order to get to the next progress bar step). */
1418 if (progbar == NULL) {
1419 progbar = delayed_create_progress_dlg(NULL, "Merging", "files",
1420 FALSE, &stop_flag, &start_time, progbar_val);
1423 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
1424 when we update it, we have to run the GTK+ main loop to get it
1425 to repaint what's pending, and doing so may involve an "ioctl()"
1426 to see if there's any pending input from an X server, and doing
1427 that for every packet can be costly, especially on a big file. */
1428 if (data_offset >= progbar_nextstep) {
1429 /* Get the sum of the seek positions in all of the files. */
1431 for (i = 0; i < in_file_count; i++)
1432 file_pos += wtap_read_so_far(in_files[i].wth);
1433 progbar_val = (gfloat) file_pos / (gfloat) f_len;
1434 if (progbar_val > 1.0f) {
1435 /* Some file probably grew while we were reading it.
1436 That "shouldn't happen", so we'll just clip the progress
1440 if (progbar != NULL) {
1441 g_snprintf(status_str, sizeof(status_str),
1442 "%" G_GINT64_MODIFIER "dKB of %" G_GINT64_MODIFIER "dKB",
1443 file_pos / 1024, f_len / 1024);
1444 update_progress_dlg(progbar, progbar_val, status_str);
1446 progbar_nextstep += progbar_quantum;
1450 /* Well, the user decided to abort the merge. */
1454 /* If we have WTAP_ENCAP_PER_PACKETend the infiles are of type WTAP_FILE_PCAP
1455 * we need to set the interface id in the paket header = the interface index we used
1456 * in the IDBs interface description for this file(encapsulation type).
1458 if (fake_interface_ids) {
1459 struct wtap_pkthdr *phdr;
1461 phdr = wtap_phdr(in_file->wth);
1462 phdr->interface_id = in_file->interface_id;
1463 phdr->presence_flags = phdr->presence_flags | WTAP_HAS_INTERFACE_ID;
1465 if (!wtap_dump(pdh, wtap_phdr(in_file->wth),
1466 wtap_buf_ptr(in_file->wth), &write_err)) {
1467 got_write_error = TRUE;
1472 /* We're done merging the files; destroy the progress bar if it was created. */
1473 if (progbar != NULL)
1474 destroy_progress_dlg(progbar);
1476 merge_close_in_files(in_file_count, in_files);
1477 if (!got_read_error && !got_write_error) {
1478 if (!wtap_dump_close(pdh, &write_err))
1479 got_write_error = TRUE;
1481 wtap_dump_close(pdh, &close_err);
1483 if (got_read_error) {
1485 * Find the file on which we got the error, and report the error.
1487 for (i = 0; i < in_file_count; i++) {
1488 if (in_files[i].state == GOT_ERROR) {
1489 /* Put up a message box noting that a read failed somewhere along
1491 display_basename = g_filename_display_basename(in_files[i].filename);
1494 case WTAP_ERR_UNSUPPORTED_ENCAP:
1495 simple_error_message_box(
1496 "The capture file %s has a packet with a network type that Wireshark doesn't support.\n(%s)",
1497 display_basename, err_info);
1501 case WTAP_ERR_CANT_READ:
1502 simple_error_message_box(
1503 "An attempt to read from the capture file %s failed for"
1504 " some unknown reason.", display_basename);
1507 case WTAP_ERR_SHORT_READ:
1508 simple_error_message_box(
1509 "The capture file %s appears to have been cut short"
1510 " in the middle of a packet.", display_basename);
1513 case WTAP_ERR_BAD_FILE:
1514 simple_error_message_box(
1515 "The capture file %s appears to be damaged or corrupt.\n(%s)",
1516 display_basename, err_info);
1520 case WTAP_ERR_DECOMPRESS:
1521 simple_error_message_box(
1522 "The compressed capture file %s appears to be damaged or corrupt.\n"
1523 "(%s)", display_basename, err_info);
1528 simple_error_message_box(
1529 "An error occurred while reading the"
1530 " capture file %s: %s.",
1531 display_basename, wtap_strerror(read_err));
1534 g_free(display_basename);
1539 if (got_write_error) {
1540 /* Put up an alert box for the write error. */
1541 if (write_err < 0) {
1542 /* Wiretap error. */
1543 switch (write_err) {
1545 case WTAP_ERR_UNSUPPORTED_ENCAP:
1547 * This is a problem with the particular frame we're writing;
1548 * note that, and give the frame number.
1550 display_basename = g_filename_display_basename(in_file->filename);
1551 simple_error_message_box(
1552 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.",
1553 in_file->packet_num, display_basename,
1554 wtap_file_type_string(file_type));
1555 g_free(display_basename);
1559 display_basename = g_filename_display_basename(out_filename);
1560 simple_error_message_box(
1561 "An error occurred while writing to the file \"%s\": %s.",
1562 out_filename, wtap_strerror(write_err));
1563 g_free(display_basename);
1568 write_failure_alert_box(out_filename, write_err);
1572 if (got_read_error || got_write_error || stop_flag) {
1573 /* Callers aren't expected to treat an error or an explicit abort
1574 differently - we put up error dialogs ourselves, so they don't
1582 cf_filter_packets(capture_file *cf, gchar *dftext, gboolean force)
1584 const char *filter_new = dftext ? dftext : "";
1585 const char *filter_old = cf->dfilter ? cf->dfilter : "";
1587 GTimeVal start_time;
1589 /* if new filter equals old one, do nothing unless told to do so */
1590 if (!force && strcmp(filter_new, filter_old) == 0) {
1596 if (dftext == NULL) {
1597 /* The new filter is an empty filter (i.e., display all packets).
1598 * so leave dfcode==NULL
1602 * We have a filter; make a copy of it (as we'll be saving it),
1603 * and try to compile it.
1605 dftext = g_strdup(dftext);
1606 if (!dfilter_compile(dftext, &dfcode)) {
1607 /* The attempt failed; report an error. */
1608 simple_message_box(ESD_TYPE_ERROR, NULL,
1609 "See the help for a description of the display filter syntax.",
1610 "\"%s\" isn't a valid display filter: %s",
1611 dftext, dfilter_error_msg);
1617 if (dfcode == NULL) {
1618 /* Yes - free the filter text, and set it to null. */
1624 /* We have a valid filter. Replace the current filter. */
1625 g_free(cf->dfilter);
1626 cf->dfilter = dftext;
1627 g_get_current_time(&start_time);
1630 /* Now rescan the packet list, applying the new filter, but not
1631 throwing away information constructed on a previous pass. */
1632 if (dftext == NULL) {
1633 rescan_packets(cf, "Resetting", "Filter", FALSE);
1635 rescan_packets(cf, "Filtering", dftext, FALSE);
1638 /* Cleanup and release all dfilter resources */
1639 dfilter_free(dfcode);
1645 cf_reftime_packets(capture_file *cf)
1647 ref_time_packets(cf);
1651 cf_redissect_packets(capture_file *cf)
1653 rescan_packets(cf, "Reprocessing", "all packets", TRUE);
1657 cf_read_frame_r(capture_file *cf, frame_data *fdata,
1658 struct wtap_pkthdr *phdr, guint8 *pd)
1662 gchar *display_basename;
1664 #ifdef WANT_PACKET_EDITOR
1665 /* if fdata->file_off == -1 it means packet was edited, and we must find data inside edited_frames tree */
1666 if (G_UNLIKELY(fdata->file_off == -1)) {
1667 const modified_frame_data *frame = (const modified_frame_data *) g_tree_lookup(cf->edited_frames, GINT_TO_POINTER(fdata->num));
1670 simple_error_message_box("fdata->file_off == -1, but can't find modified frame!");
1674 *phdr = frame->phdr;
1675 memcpy(pd, frame->pd, fdata->cap_len);
1680 if (!wtap_seek_read(cf->wth, fdata->file_off, phdr, pd,
1681 fdata->cap_len, &err, &err_info)) {
1682 display_basename = g_filename_display_basename(cf->filename);
1685 case WTAP_ERR_UNSUPPORTED_ENCAP:
1686 simple_error_message_box("The file \"%s\" has a packet with a network type that Wireshark doesn't support.\n(%s)",
1687 display_basename, err_info);
1691 case WTAP_ERR_BAD_FILE:
1692 simple_error_message_box("An error occurred while reading from the file \"%s\": %s.\n(%s)",
1693 display_basename, wtap_strerror(err), err_info);
1698 simple_error_message_box(
1699 "An error occurred while reading from the file \"%s\": %s.",
1700 display_basename, wtap_strerror(err));
1703 g_free(display_basename);
1710 cf_read_frame(capture_file *cf, frame_data *fdata)
1712 return cf_read_frame_r(cf, fdata, &cf->phdr, cf->pd);
1715 /* Rescan the list of packets, reconstructing the CList.
1717 "action" describes why we're doing this; it's used in the progress
1720 "action_item" describes what we're doing; it's used in the progress
1723 "redissect" is TRUE if we need to make the dissectors reconstruct
1724 any state information they have (because a preference that affects
1725 some dissector has changed, meaning some dissector might construct
1726 its state differently from the way it was constructed the last time). */
1728 rescan_packets(capture_file *cf, const char *action, const char *action_item, gboolean redissect)
1730 /* Rescan packets new packet list */
1733 progdlg_t *progbar = NULL;
1736 frame_data *selected_frame, *preceding_frame, *following_frame, *prev_frame;
1737 int selected_frame_num, preceding_frame_num, following_frame_num, prev_frame_num;
1738 gboolean selected_frame_seen;
1740 GTimeVal start_time;
1741 gchar status_str[100];
1742 int progbar_nextstep;
1743 int progbar_quantum;
1746 gboolean create_proto_tree;
1748 gboolean add_to_packet_list = FALSE;
1750 guint32 frames_count;
1752 /* Compile the current display filter.
1753 * We assume this will not fail since cf->dfilter is only set in
1754 * cf_filter IFF the filter was valid.
1756 compiled = dfilter_compile(cf->dfilter, &dfcode);
1757 g_assert(!cf->dfilter || (compiled && dfcode));
1759 /* Get the union of the flags for all tap listeners. */
1760 tap_flags = union_of_tap_listener_flags();
1761 cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
1763 (dfcode != NULL || have_filtering_tap_listeners() || (tap_flags & TL_REQUIRES_PROTO_TREE));
1765 reset_tap_listeners();
1766 /* Which frame, if any, is the currently selected frame?
1767 XXX - should the selected frame or the focus frame be the "current"
1768 frame, that frame being the one from which "Find Frame" searches
1770 selected_frame = cf->current_frame;
1772 /* Mark frame num as not found */
1773 selected_frame_num = -1;
1775 /* Freeze the packet list while we redo it, so we don't get any
1776 screen updates while it happens. */
1777 packet_list_freeze();
1780 /* We need to re-initialize all the state information that protocols
1781 keep, because some preference that controls a dissector has changed,
1782 which might cause the state information to be constructed differently
1783 by that dissector. */
1785 /* We might receive new packets while redissecting, and we don't
1786 want to dissect those before their time. */
1787 cf->redissecting = TRUE;
1789 /* Cleanup all data structures used for dissection. */
1790 cleanup_dissection();
1791 /* Initialize all data structures used for dissection. */
1794 /* We need to redissect the packets so we have to discard our old
1795 * packet list store. */
1796 packet_list_clear();
1797 add_to_packet_list = TRUE;
1800 /* We don't yet know which will be the first and last frames displayed. */
1801 cf->first_displayed = 0;
1802 cf->last_displayed = 0;
1804 /* We currently don't display any packets */
1805 cf->displayed_count = 0;
1807 /* Iterate through the list of frames. Call a routine for each frame
1808 to check whether it should be displayed and, if so, add it to
1809 the display list. */
1810 nstime_set_unset(&first_ts);
1815 /* Update the progress bar when it gets to this value. */
1816 progbar_nextstep = 0;
1817 /* When we reach the value that triggers a progress bar update,
1818 bump that value by this amount. */
1819 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
1820 /* Count of packets at which we've looked. */
1822 /* Progress so far. */
1826 g_get_current_time(&start_time);
1828 /* no previous row yet */
1829 prev_frame_num = -1;
1832 preceding_frame_num = -1;
1833 preceding_frame = NULL;
1834 following_frame_num = -1;
1835 following_frame = NULL;
1837 selected_frame_seen = FALSE;
1839 frames_count = cf->count;
1840 for (framenum = 1; framenum <= frames_count; framenum++) {
1841 fdata = frame_data_sequence_find(cf->frames, framenum);
1843 /* Create the progress bar if necessary.
1844 We check on every iteration of the loop, so that it takes no
1845 longer than the standard time to create it (otherwise, for a
1846 large file, we might take considerably longer than that standard
1847 time in order to get to the next progress bar step). */
1848 if (progbar == NULL)
1849 progbar = delayed_create_progress_dlg(cf->window, action, action_item, TRUE,
1850 &stop_flag, &start_time,
1853 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
1854 when we update it, we have to run the GTK+ main loop to get it
1855 to repaint what's pending, and doing so may involve an "ioctl()"
1856 to see if there's any pending input from an X server, and doing
1857 that for every packet can be costly, especially on a big file. */
1858 if (count >= progbar_nextstep) {
1859 /* let's not divide by zero. I should never be started
1860 * with count == 0, so let's assert that
1862 g_assert(cf->count > 0);
1863 progbar_val = (gfloat) count / frames_count;
1865 if (progbar != NULL) {
1866 g_snprintf(status_str, sizeof(status_str),
1867 "%4u of %u frames", count, frames_count);
1868 update_progress_dlg(progbar, progbar_val, status_str);
1871 progbar_nextstep += progbar_quantum;
1875 /* Well, the user decided to abort the filtering. Just stop.
1877 XXX - go back to the previous filter? Users probably just
1878 want not to wait for a filtering operation to finish;
1879 unless we cancel by having no filter, reverting to the
1880 previous filter will probably be even more expensive than
1881 continuing the filtering, as it involves going back to the
1882 beginning and filtering, and even with no filter we currently
1883 have to re-generate the entire clist, which is also expensive.
1885 I'm not sure what Network Monitor does, but it doesn't appear
1886 to give you an unfiltered display if you cancel. */
1893 /* Since all state for the frame was destroyed, mark the frame
1894 * as not visited, free the GSList referring to the state
1895 * data (the per-frame data itself was freed by
1896 * "init_dissection()"), and null out the GSList pointer. */
1897 frame_data_reset(fdata);
1898 frames_count = cf->count;
1901 /* Frame dependencies from the previous dissection/filtering are no longer valid. */
1902 fdata->flags.dependent_of_displayed = 0;
1904 if (!cf_read_frame(cf, fdata))
1905 break; /* error reading the frame */
1907 /* If the previous frame is displayed, and we haven't yet seen the
1908 selected frame, remember that frame - it's the closest one we've
1909 yet seen before the selected frame. */
1910 if (prev_frame_num != -1 && !selected_frame_seen && prev_frame->flags.passed_dfilter) {
1911 preceding_frame_num = prev_frame_num;
1912 preceding_frame = prev_frame;
1914 add_packet_to_packet_list(fdata, cf, dfcode, create_proto_tree,
1915 cinfo, &cf->phdr, cf->pd,
1916 add_to_packet_list);
1918 /* If this frame is displayed, and this is the first frame we've
1919 seen displayed after the selected frame, remember this frame -
1920 it's the closest one we've yet seen at or after the selected
1922 if (fdata->flags.passed_dfilter && selected_frame_seen && following_frame_num == -1) {
1923 following_frame_num = fdata->num;
1924 following_frame = fdata;
1926 if (fdata == selected_frame) {
1927 selected_frame_seen = TRUE;
1928 if (fdata->flags.passed_dfilter)
1929 selected_frame_num = fdata->num;
1932 /* Remember this frame - it'll be the previous frame
1933 on the next pass through the loop. */
1934 prev_frame_num = fdata->num;
1938 /* We are done redissecting the packet list. */
1939 cf->redissecting = FALSE;
1942 frames_count = cf->count;
1943 /* Clear out what remains of the visited flags and per-frame data
1946 XXX - that may cause various forms of bogosity when dissecting
1947 these frames, as they won't have been seen by this sequential
1948 pass, but the only alternative I see is to keep scanning them
1949 even though the user requested that the scan stop, and that
1950 would leave the user stuck with an Wireshark grinding on
1951 until it finishes. Should we just stick them with that? */
1952 for (; framenum <= frames_count; framenum++) {
1953 fdata = frame_data_sequence_find(cf->frames, framenum);
1954 frame_data_reset(fdata);
1958 /* We're done filtering the packets; destroy the progress bar if it
1960 if (progbar != NULL)
1961 destroy_progress_dlg(progbar);
1963 /* Unfreeze the packet list. */
1964 if (!add_to_packet_list)
1965 packet_list_recreate_visible_rows();
1967 /* Compute the time it took to filter the file */
1968 compute_elapsed(&start_time);
1972 if (selected_frame_num == -1) {
1973 /* The selected frame didn't pass the filter. */
1974 if (selected_frame == NULL) {
1975 /* That's because there *was* no selected frame. Make the first
1976 displayed frame the current frame. */
1977 selected_frame_num = 0;
1979 /* Find the nearest displayed frame to the selected frame (whether
1980 it's before or after that frame) and make that the current frame.
1981 If the next and previous displayed frames are equidistant from the
1982 selected frame, choose the next one. */
1983 g_assert(following_frame == NULL ||
1984 following_frame->num >= selected_frame->num);
1985 g_assert(preceding_frame == NULL ||
1986 preceding_frame->num <= selected_frame->num);
1987 if (following_frame == NULL) {
1988 /* No frame after the selected frame passed the filter, so we
1989 have to select the last displayed frame before the selected
1991 selected_frame_num = preceding_frame_num;
1992 selected_frame = preceding_frame;
1993 } else if (preceding_frame == NULL) {
1994 /* No frame before the selected frame passed the filter, so we
1995 have to select the first displayed frame after the selected
1997 selected_frame_num = following_frame_num;
1998 selected_frame = following_frame;
2000 /* Frames before and after the selected frame passed the filter, so
2001 we'll select the previous frame */
2002 selected_frame_num = preceding_frame_num;
2003 selected_frame = preceding_frame;
2008 if (selected_frame_num == -1) {
2009 /* There are no frames displayed at all. */
2010 cf_unselect_packet(cf);
2012 /* Either the frame that was selected passed the filter, or we've
2013 found the nearest displayed frame to that frame. Select it, make
2014 it the focus row, and make it visible. */
2015 /* Set to invalid to force update of packet list and packet details */
2016 cf->current_row = -1;
2017 if (selected_frame_num == 0) {
2018 packet_list_select_first_row();
2020 if (!packet_list_select_row_from_data(selected_frame)) {
2021 /* We didn't find a row corresponding to this frame.
2022 This means that the frame isn't being displayed currently,
2023 so we can't select it. */
2024 simple_message_box(ESD_TYPE_INFO, NULL,
2025 "The capture file is probably not fully dissected.",
2026 "End of capture exceeded!");
2031 /* Cleanup and release all dfilter resources */
2032 dfilter_free(dfcode);
2037 * Scan trough all frame data and recalculate the ref time
2038 * without rereading the file.
2039 * XXX - do we need a progres bar or is this fast enough?
2042 ref_time_packets(capture_file *cf)
2047 nstime_set_unset(&first_ts);
2051 for (framenum = 1; framenum <= cf->count; framenum++) {
2052 fdata = frame_data_sequence_find(cf->frames, framenum);
2054 /* just add some value here until we know if it is being displayed or not */
2055 fdata->cum_bytes = cum_bytes + fdata->pkt_len;
2061 /* If we don't have the time stamp of the first packet in the
2062 capture, it's because this is the first packet. Save the time
2063 stamp of this packet as the time stamp of the first packet. */
2064 if (nstime_is_unset(&first_ts)) {
2065 first_ts = fdata->abs_ts;
2067 /* if this frames is marked as a reference time frame, reset
2068 firstsec and firstusec to this frame */
2069 if (fdata->flags.ref_time) {
2070 first_ts = fdata->abs_ts;
2073 /* If we don't have the time stamp of the previous displayed packet,
2074 it's because this is the first displayed packet. Save the time
2075 stamp of this packet as the time stamp of the previous displayed
2077 if (prev_dis == NULL) {
2081 /* Get the time elapsed between the first packet and this packet. */
2082 nstime_delta(&fdata->rel_ts, &fdata->abs_ts, &first_ts);
2084 /* If it's greater than the current elapsed time, set the elapsed time
2085 to it (we check for "greater than" so as not to be confused by
2086 time moving backwards). */
2087 if ((gint32)cf->elapsed_time.secs < fdata->rel_ts.secs
2088 || ((gint32)cf->elapsed_time.secs == fdata->rel_ts.secs && (gint32)cf->elapsed_time.nsecs < fdata->rel_ts.nsecs)) {
2089 cf->elapsed_time = fdata->rel_ts;
2092 /* If this frame is displayed, get the time elapsed between the
2093 previous displayed packet and this packet. */
2094 if ( fdata->flags.passed_dfilter ) {
2095 fdata->prev_dis = prev_dis;
2102 if ( (fdata->flags.passed_dfilter) || (fdata->flags.ref_time) ) {
2103 /* This frame either passed the display filter list or is marked as
2104 a time reference frame. All time reference frames are displayed
2105 even if they dont pass the display filter */
2106 if (fdata->flags.ref_time) {
2107 /* if this was a TIME REF frame we should reset the cum_bytes field */
2108 cum_bytes = fdata->pkt_len;
2109 fdata->cum_bytes = cum_bytes;
2111 /* increase cum_bytes with this packets length */
2112 cum_bytes += fdata->pkt_len;
2125 process_specified_packets(capture_file *cf, packet_range_t *range,
2126 const char *string1, const char *string2, gboolean terminate_is_stop,
2127 gboolean (*callback)(capture_file *, frame_data *,
2128 struct wtap_pkthdr *, const guint8 *, void *),
2129 void *callback_args)
2133 guint8 pd[WTAP_MAX_PACKET_SIZE+1];
2134 psp_return_t ret = PSP_FINISHED;
2136 progdlg_t *progbar = NULL;
2139 gboolean progbar_stop_flag;
2140 GTimeVal progbar_start_time;
2141 gchar progbar_status_str[100];
2142 int progbar_nextstep;
2143 int progbar_quantum;
2144 range_process_e process_this;
2145 struct wtap_pkthdr phdr;
2147 /* Update the progress bar when it gets to this value. */
2148 progbar_nextstep = 0;
2149 /* When we reach the value that triggers a progress bar update,
2150 bump that value by this amount. */
2151 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
2152 /* Count of packets at which we've looked. */
2154 /* Progress so far. */
2157 progbar_stop_flag = FALSE;
2158 g_get_current_time(&progbar_start_time);
2161 packet_range_process_init(range);
2163 /* Iterate through all the packets, printing the packets that
2164 were selected by the current display filter. */
2165 for (framenum = 1; framenum <= cf->count; framenum++) {
2166 fdata = frame_data_sequence_find(cf->frames, framenum);
2168 /* Create the progress bar if necessary.
2169 We check on every iteration of the loop, so that it takes no
2170 longer than the standard time to create it (otherwise, for a
2171 large file, we might take considerably longer than that standard
2172 time in order to get to the next progress bar step). */
2173 if (progbar == NULL)
2174 progbar = delayed_create_progress_dlg(cf->window, string1, string2,
2177 &progbar_start_time,
2180 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
2181 when we update it, we have to run the GTK+ main loop to get it
2182 to repaint what's pending, and doing so may involve an "ioctl()"
2183 to see if there's any pending input from an X server, and doing
2184 that for every packet can be costly, especially on a big file. */
2185 if (progbar_count >= progbar_nextstep) {
2186 /* let's not divide by zero. I should never be started
2187 * with count == 0, so let's assert that
2189 g_assert(cf->count > 0);
2190 progbar_val = (gfloat) progbar_count / cf->count;
2192 if (progbar != NULL) {
2193 g_snprintf(progbar_status_str, sizeof(progbar_status_str),
2194 "%4u of %u packets", progbar_count, cf->count);
2195 update_progress_dlg(progbar, progbar_val, progbar_status_str);
2198 progbar_nextstep += progbar_quantum;
2201 if (progbar_stop_flag) {
2202 /* Well, the user decided to abort the operation. Just stop,
2203 and arrange to return PSP_STOPPED to our caller, so they know
2204 it was stopped explicitly. */
2211 if (range != NULL) {
2212 /* do we have to process this packet? */
2213 process_this = packet_range_process_packet(range, fdata);
2214 if (process_this == range_process_next) {
2215 /* this packet uninteresting, continue with next one */
2217 } else if (process_this == range_processing_finished) {
2218 /* all interesting packets processed, stop the loop */
2223 /* Get the packet */
2224 if (!cf_read_frame_r(cf, fdata, &phdr, pd)) {
2225 /* Attempt to get the packet failed. */
2229 /* Process the packet */
2230 if (!callback(cf, fdata, &phdr, pd, callback_args)) {
2231 /* Callback failed. We assume it reported the error appropriately. */
2237 /* We're done printing the packets; destroy the progress bar if
2239 if (progbar != NULL)
2240 destroy_progress_dlg(progbar);
2246 gboolean construct_protocol_tree;
2248 } retap_callback_args_t;
2251 retap_packet(capture_file *cf _U_, frame_data *fdata,
2252 struct wtap_pkthdr *phdr, const guint8 *pd,
2255 retap_callback_args_t *args = (retap_callback_args_t *)argsp;
2258 epan_dissect_init(&edt, args->construct_protocol_tree, FALSE);
2259 epan_dissect_run_with_taps(&edt, phdr, pd, fdata, args->cinfo);
2260 epan_dissect_cleanup(&edt);
2266 cf_retap_packets(capture_file *cf)
2268 packet_range_t range;
2269 retap_callback_args_t callback_args;
2270 gboolean filtering_tap_listeners;
2273 /* Do we have any tap listeners with filters? */
2274 filtering_tap_listeners = have_filtering_tap_listeners();
2276 tap_flags = union_of_tap_listener_flags();
2278 /* If any tap listeners have filters, or require the protocol tree,
2279 construct the protocol tree. */
2280 callback_args.construct_protocol_tree = filtering_tap_listeners ||
2281 (tap_flags & TL_REQUIRES_PROTO_TREE);
2283 /* If any tap listeners require the columns, construct them. */
2284 callback_args.cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
2286 /* Reset the tap listeners. */
2287 reset_tap_listeners();
2289 /* Iterate through the list of packets, dissecting all packets and
2290 re-running the taps. */
2291 packet_range_init(&range, cf);
2292 packet_range_process_init(&range);
2293 switch (process_specified_packets(cf, &range, "Recalculating statistics on",
2294 "all packets", TRUE, retap_packet,
2297 /* Completed successfully. */
2301 /* Well, the user decided to abort the refiltering.
2302 Return CF_READ_ABORTED so our caller knows they did that. */
2303 return CF_READ_ABORTED;
2306 /* Error while retapping. */
2307 return CF_READ_ERROR;
2310 g_assert_not_reached();
2315 print_args_t *print_args;
2316 gboolean print_header_line;
2317 char *header_line_buf;
2318 int header_line_buf_len;
2319 gboolean print_formfeed;
2320 gboolean print_separator;
2324 int num_visible_cols;
2326 } print_callback_args_t;
2329 print_packet(capture_file *cf, frame_data *fdata,
2330 struct wtap_pkthdr *phdr, const guint8 *pd,
2333 print_callback_args_t *args = (print_callback_args_t *)argsp;
2340 gboolean proto_tree_needed;
2341 char bookmark_name[9+10+1]; /* "__frameNNNNNNNNNN__\0" */
2342 char bookmark_title[6+10+1]; /* "Frame NNNNNNNNNN__\0" */
2344 /* Create the protocol tree, and make it visible, if we're printing
2345 the dissection or the hex data.
2346 XXX - do we need it if we're just printing the hex data? */
2348 args->print_args->print_dissections != print_dissections_none || args->print_args->print_hex || have_custom_cols(&cf->cinfo);
2349 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2351 /* Fill in the column information if we're printing the summary
2353 if (args->print_args->print_summary) {
2354 col_custom_prime_edt(&edt, &cf->cinfo);
2355 epan_dissect_run(&edt, phdr, pd, fdata, &cf->cinfo);
2356 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2358 epan_dissect_run(&edt, phdr, pd, fdata, NULL);
2360 if (args->print_formfeed) {
2361 if (!new_page(args->print_args->stream))
2364 if (args->print_separator) {
2365 if (!print_line(args->print_args->stream, 0, ""))
2371 * We generate bookmarks, if the output format supports them.
2372 * The name is "__frameN__".
2374 g_snprintf(bookmark_name, sizeof bookmark_name, "__frame%u__", fdata->num);
2376 if (args->print_args->print_summary) {
2377 if (args->print_header_line) {
2378 if (!print_line(args->print_args->stream, 0, args->header_line_buf))
2380 args->print_header_line = FALSE; /* we might not need to print any more */
2382 cp = &args->line_buf[0];
2384 for (i = 0; i < args->num_visible_cols; i++) {
2385 /* Find the length of the string for this column. */
2386 column_len = (int) strlen(cf->cinfo.col_data[args->visible_cols[i]]);
2387 if (args->col_widths[i] > column_len)
2388 column_len = args->col_widths[i];
2390 /* Make sure there's room in the line buffer for the column; if not,
2391 double its length. */
2392 line_len += column_len + 1; /* "+1" for space */
2393 if (line_len > args->line_buf_len) {
2394 cp_off = (int) (cp - args->line_buf);
2395 args->line_buf_len = 2 * line_len;
2396 args->line_buf = (char *)g_realloc(args->line_buf, args->line_buf_len + 1);
2397 cp = args->line_buf + cp_off;
2400 /* Right-justify the packet number column. */
2401 if (cf->cinfo.col_fmt[args->visible_cols[i]] == COL_NUMBER)
2402 g_snprintf(cp, column_len+1, "%*s", args->col_widths[i], cf->cinfo.col_data[args->visible_cols[i]]);
2404 g_snprintf(cp, column_len+1, "%-*s", args->col_widths[i], cf->cinfo.col_data[args->visible_cols[i]]);
2406 if (i != args->num_visible_cols - 1)
2412 * Generate a bookmark, using the summary line as the title.
2414 if (!print_bookmark(args->print_args->stream, bookmark_name,
2418 if (!print_line(args->print_args->stream, 0, args->line_buf))
2422 * Generate a bookmark, using "Frame N" as the title, as we're not
2423 * printing the summary line.
2425 g_snprintf(bookmark_title, sizeof bookmark_title, "Frame %u", fdata->num);
2426 if (!print_bookmark(args->print_args->stream, bookmark_name,
2429 } /* if (print_summary) */
2431 if (args->print_args->print_dissections != print_dissections_none) {
2432 if (args->print_args->print_summary) {
2433 /* Separate the summary line from the tree with a blank line. */
2434 if (!print_line(args->print_args->stream, 0, ""))
2438 /* Print the information in that tree. */
2439 if (!proto_tree_print(args->print_args, &edt, args->print_args->stream))
2442 /* Print a blank line if we print anything after this (aka more than one packet). */
2443 args->print_separator = TRUE;
2445 /* Print a header line if we print any more packet summaries */
2446 args->print_header_line = TRUE;
2449 if (args->print_args->print_hex) {
2450 if (args->print_args->print_summary || (args->print_args->print_dissections != print_dissections_none)) {
2451 if (!print_line(args->print_args->stream, 0, ""))
2454 /* Print the full packet data as hex. */
2455 if (!print_hex_data(args->print_args->stream, &edt))
2458 /* Print a blank line if we print anything after this (aka more than one packet). */
2459 args->print_separator = TRUE;
2461 /* Print a header line if we print any more packet summaries */
2462 args->print_header_line = TRUE;
2463 } /* if (args->print_args->print_dissections != print_dissections_none) */
2465 epan_dissect_cleanup(&edt);
2467 /* do we want to have a formfeed between each packet from now on? */
2468 if (args->print_args->print_formfeed) {
2469 args->print_formfeed = TRUE;
2475 epan_dissect_cleanup(&edt);
2480 cf_print_packets(capture_file *cf, print_args_t *print_args)
2482 print_callback_args_t callback_args;
2485 int i, cp_off, column_len, line_len;
2486 int num_visible_col = 0, last_visible_col = 0, visible_col_count;
2491 callback_args.print_args = print_args;
2492 callback_args.print_header_line = TRUE;
2493 callback_args.header_line_buf = NULL;
2494 callback_args.header_line_buf_len = 256;
2495 callback_args.print_formfeed = FALSE;
2496 callback_args.print_separator = FALSE;
2497 callback_args.line_buf = NULL;
2498 callback_args.line_buf_len = 256;
2499 callback_args.col_widths = NULL;
2500 callback_args.num_visible_cols = 0;
2501 callback_args.visible_cols = NULL;
2503 if (!print_preamble(print_args->stream, cf->filename)) {
2504 destroy_print_stream(print_args->stream);
2505 return CF_PRINT_WRITE_ERROR;
2508 if (print_args->print_summary) {
2509 /* We're printing packet summaries. Allocate the header line buffer
2510 and get the column widths. */
2511 callback_args.header_line_buf = (char *)g_malloc(callback_args.header_line_buf_len + 1);
2513 /* Find the number of visible columns and the last visible column */
2514 for (i = 0; i < prefs.num_cols; i++) {
2516 clp = g_list_nth(prefs.col_list, i);
2517 if (clp == NULL) /* Sanity check, Invalid column requested */
2520 cfmt = (fmt_data *) clp->data;
2521 if (cfmt->visible) {
2523 last_visible_col = i;
2527 /* Find the widths for each of the columns - maximum of the
2528 width of the title and the width of the data - and construct
2529 a buffer with a line containing the column titles. */
2530 callback_args.num_visible_cols = num_visible_col;
2531 callback_args.col_widths = (gint *) g_malloc(sizeof(gint) * num_visible_col);
2532 callback_args.visible_cols = (gint *) g_malloc(sizeof(gint) * num_visible_col);
2533 cp = &callback_args.header_line_buf[0];
2535 visible_col_count = 0;
2536 for (i = 0; i < cf->cinfo.num_cols; i++) {
2538 clp = g_list_nth(prefs.col_list, i);
2539 if (clp == NULL) /* Sanity check, Invalid column requested */
2542 cfmt = (fmt_data *) clp->data;
2543 if (cfmt->visible == FALSE)
2546 /* Save the order of visible columns */
2547 callback_args.visible_cols[visible_col_count] = i;
2549 /* Don't pad the last column. */
2550 if (i == last_visible_col)
2551 callback_args.col_widths[visible_col_count] = 0;
2553 callback_args.col_widths[visible_col_count] = (gint) strlen(cf->cinfo.col_title[i]);
2554 data_width = get_column_char_width(get_column_format(i));
2555 if (data_width > callback_args.col_widths[visible_col_count])
2556 callback_args.col_widths[visible_col_count] = data_width;
2559 /* Find the length of the string for this column. */
2560 column_len = (int) strlen(cf->cinfo.col_title[i]);
2561 if (callback_args.col_widths[i] > column_len)
2562 column_len = callback_args.col_widths[visible_col_count];
2564 /* Make sure there's room in the line buffer for the column; if not,
2565 double its length. */
2566 line_len += column_len + 1; /* "+1" for space */
2567 if (line_len > callback_args.header_line_buf_len) {
2568 cp_off = (int) (cp - callback_args.header_line_buf);
2569 callback_args.header_line_buf_len = 2 * line_len;
2570 callback_args.header_line_buf = (char *)g_realloc(callback_args.header_line_buf,
2571 callback_args.header_line_buf_len + 1);
2572 cp = callback_args.header_line_buf + cp_off;
2575 /* Right-justify the packet number column. */
2576 /* if (cf->cinfo.col_fmt[i] == COL_NUMBER)
2577 g_snprintf(cp, column_len+1, "%*s", callback_args.col_widths[visible_col_count], cf->cinfo.col_title[i]);
2579 g_snprintf(cp, column_len+1, "%-*s", callback_args.col_widths[visible_col_count], cf->cinfo.col_title[i]);
2581 if (i != cf->cinfo.num_cols - 1)
2584 visible_col_count++;
2588 /* Now start out the main line buffer with the same length as the
2589 header line buffer. */
2590 callback_args.line_buf_len = callback_args.header_line_buf_len;
2591 callback_args.line_buf = (char *)g_malloc(callback_args.line_buf_len + 1);
2592 } /* if (print_summary) */
2594 /* Iterate through the list of packets, printing the packets we were
2596 ret = process_specified_packets(cf, &print_args->range, "Printing",
2597 "selected packets", TRUE, print_packet,
2600 g_free(callback_args.header_line_buf);
2601 g_free(callback_args.line_buf);
2602 g_free(callback_args.col_widths);
2603 g_free(callback_args.visible_cols);
2608 /* Completed successfully. */
2612 /* Well, the user decided to abort the printing.
2614 XXX - note that what got generated before they did that
2615 will get printed if we're piping to a print program; we'd
2616 have to write to a file and then hand that to the print
2617 program to make it actually not print anything. */
2621 /* Error while printing.
2623 XXX - note that what got generated before they did that
2624 will get printed if we're piping to a print program; we'd
2625 have to write to a file and then hand that to the print
2626 program to make it actually not print anything. */
2627 destroy_print_stream(print_args->stream);
2628 return CF_PRINT_WRITE_ERROR;
2631 if (!print_finale(print_args->stream)) {
2632 destroy_print_stream(print_args->stream);
2633 return CF_PRINT_WRITE_ERROR;
2636 if (!destroy_print_stream(print_args->stream))
2637 return CF_PRINT_WRITE_ERROR;
2643 write_pdml_packet(capture_file *cf _U_, frame_data *fdata,
2644 struct wtap_pkthdr *phdr, const guint8 *pd,
2647 FILE *fh = (FILE *)argsp;
2650 /* Create the protocol tree, but don't fill in the column information. */
2651 epan_dissect_init(&edt, TRUE, TRUE);
2652 epan_dissect_run(&edt, phdr, pd, fdata, NULL);
2654 /* Write out the information in that tree. */
2655 proto_tree_write_pdml(&edt, fh);
2657 epan_dissect_cleanup(&edt);
2663 cf_write_pdml_packets(capture_file *cf, print_args_t *print_args)
2668 fh = ws_fopen(print_args->file, "w");
2670 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2672 write_pdml_preamble(fh, cf->filename);
2675 return CF_PRINT_WRITE_ERROR;
2678 /* Iterate through the list of packets, printing the packets we were
2680 ret = process_specified_packets(cf, &print_args->range, "Writing PDML",
2681 "selected packets", TRUE,
2682 write_pdml_packet, fh);
2687 /* Completed successfully. */
2691 /* Well, the user decided to abort the printing. */
2695 /* Error while printing. */
2697 return CF_PRINT_WRITE_ERROR;
2700 write_pdml_finale(fh);
2703 return CF_PRINT_WRITE_ERROR;
2706 /* XXX - check for an error */
2713 write_psml_packet(capture_file *cf, frame_data *fdata,
2714 struct wtap_pkthdr *phdr, const guint8 *pd,
2717 FILE *fh = (FILE *)argsp;
2719 gboolean proto_tree_needed;
2721 /* Fill in the column information, only create the protocol tree
2722 if having custom columns. */
2723 proto_tree_needed = have_custom_cols(&cf->cinfo);
2724 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2725 col_custom_prime_edt(&edt, &cf->cinfo);
2726 epan_dissect_run(&edt, phdr, pd, fdata, &cf->cinfo);
2727 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2729 /* Write out the information in that tree. */
2730 proto_tree_write_psml(&edt, fh);
2732 epan_dissect_cleanup(&edt);
2738 cf_write_psml_packets(capture_file *cf, print_args_t *print_args)
2743 fh = ws_fopen(print_args->file, "w");
2745 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2747 write_psml_preamble(fh);
2750 return CF_PRINT_WRITE_ERROR;
2753 /* Iterate through the list of packets, printing the packets we were
2755 ret = process_specified_packets(cf, &print_args->range, "Writing PSML",
2756 "selected packets", TRUE,
2757 write_psml_packet, fh);
2762 /* Completed successfully. */
2766 /* Well, the user decided to abort the printing. */
2770 /* Error while printing. */
2772 return CF_PRINT_WRITE_ERROR;
2775 write_psml_finale(fh);
2778 return CF_PRINT_WRITE_ERROR;
2781 /* XXX - check for an error */
2788 write_csv_packet(capture_file *cf, frame_data *fdata,
2789 struct wtap_pkthdr *phdr, const guint8 *pd,
2792 FILE *fh = (FILE *)argsp;
2794 gboolean proto_tree_needed;
2796 /* Fill in the column information, only create the protocol tree
2797 if having custom columns. */
2798 proto_tree_needed = have_custom_cols(&cf->cinfo);
2799 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2800 col_custom_prime_edt(&edt, &cf->cinfo);
2801 epan_dissect_run(&edt, phdr, pd, fdata, &cf->cinfo);
2802 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2804 /* Write out the information in that tree. */
2805 proto_tree_write_csv(&edt, fh);
2807 epan_dissect_cleanup(&edt);
2813 cf_write_csv_packets(capture_file *cf, print_args_t *print_args)
2818 fh = ws_fopen(print_args->file, "w");
2820 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2822 write_csv_preamble(fh);
2825 return CF_PRINT_WRITE_ERROR;
2828 /* Iterate through the list of packets, printing the packets we were
2830 ret = process_specified_packets(cf, &print_args->range, "Writing CSV",
2831 "selected packets", TRUE,
2832 write_csv_packet, fh);
2837 /* Completed successfully. */
2841 /* Well, the user decided to abort the printing. */
2845 /* Error while printing. */
2847 return CF_PRINT_WRITE_ERROR;
2850 write_csv_finale(fh);
2853 return CF_PRINT_WRITE_ERROR;
2856 /* XXX - check for an error */
2863 write_carrays_packet(capture_file *cf _U_, frame_data *fdata,
2864 struct wtap_pkthdr *phdr,
2865 const guint8 *pd, void *argsp)
2867 FILE *fh = (FILE *)argsp;
2870 epan_dissect_init(&edt, TRUE, TRUE);
2871 epan_dissect_run(&edt, phdr, pd, fdata, NULL);
2872 proto_tree_write_carrays(fdata->num, fh, &edt);
2873 epan_dissect_cleanup(&edt);
2879 cf_write_carrays_packets(capture_file *cf, print_args_t *print_args)
2884 fh = ws_fopen(print_args->file, "w");
2887 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2889 write_carrays_preamble(fh);
2893 return CF_PRINT_WRITE_ERROR;
2896 /* Iterate through the list of packets, printing the packets we were
2898 ret = process_specified_packets(cf, &print_args->range,
2900 "selected packets", TRUE,
2901 write_carrays_packet, fh);
2904 /* Completed successfully. */
2907 /* Well, the user decided to abort the printing. */
2910 /* Error while printing. */
2912 return CF_PRINT_WRITE_ERROR;
2915 write_carrays_finale(fh);
2919 return CF_PRINT_WRITE_ERROR;
2927 cf_find_packet_protocol_tree(capture_file *cf, const char *string,
2928 search_direction dir)
2932 mdata.string = string;
2933 mdata.string_len = strlen(string);
2934 return find_packet(cf, match_protocol_tree, &mdata, dir);
2938 cf_find_string_protocol_tree(capture_file *cf, proto_tree *tree, match_data *mdata)
2940 mdata->frame_matched = FALSE;
2941 mdata->string = convert_string_case(cf->sfilter, cf->case_type);
2942 mdata->string_len = strlen(mdata->string);
2944 /* Iterate through all the nodes looking for matching text */
2945 proto_tree_children_foreach(tree, match_subtree_text, mdata);
2946 return mdata->frame_matched ? MR_MATCHED : MR_NOTMATCHED;
2950 match_protocol_tree(capture_file *cf, frame_data *fdata, void *criterion)
2952 match_data *mdata = (match_data *)criterion;
2955 /* Load the frame's data. */
2956 if (!cf_read_frame(cf, fdata)) {
2957 /* Attempt to get the packet failed. */
2961 /* Construct the protocol tree, including the displayed text */
2962 epan_dissect_init(&edt, TRUE, TRUE);
2963 /* We don't need the column information */
2964 epan_dissect_run(&edt, &cf->phdr, cf->pd, fdata, NULL);
2966 /* Iterate through all the nodes, seeing if they have text that matches. */
2968 mdata->frame_matched = FALSE;
2969 proto_tree_children_foreach(edt.tree, match_subtree_text, mdata);
2970 epan_dissect_cleanup(&edt);
2971 return mdata->frame_matched ? MR_MATCHED : MR_NOTMATCHED;
2975 match_subtree_text(proto_node *node, gpointer data)
2977 match_data *mdata = (match_data *) data;
2978 const gchar *string = mdata->string;
2979 size_t string_len = mdata->string_len;
2980 capture_file *cf = mdata->cf;
2981 field_info *fi = PNODE_FINFO(node);
2982 gchar label_str[ITEM_LABEL_LENGTH];
2989 /* dissection with an invisible proto tree? */
2992 if (mdata->frame_matched) {
2993 /* We already had a match; don't bother doing any more work. */
2997 /* Don't match invisible entries. */
2998 if (PROTO_ITEM_IS_HIDDEN(node))
3001 /* was a free format label produced? */
3003 label_ptr = fi->rep->representation;
3005 /* no, make a generic label */
3006 label_ptr = label_str;
3007 proto_item_fill_label(fi, label_str);
3010 /* Does that label match? */
3011 label_len = strlen(label_ptr);
3012 for (i = 0; i < label_len; i++) {
3013 c_char = label_ptr[i];
3015 c_char = toupper(c_char);
3016 if (c_char == string[c_match]) {
3018 if (c_match == string_len) {
3019 /* No need to look further; we have a match */
3020 mdata->frame_matched = TRUE;
3028 /* Recurse into the subtree, if it exists */
3029 if (node->first_child != NULL)
3030 proto_tree_children_foreach(node, match_subtree_text, mdata);
3034 cf_find_packet_summary_line(capture_file *cf, const char *string,
3035 search_direction dir)
3039 mdata.string = string;
3040 mdata.string_len = strlen(string);
3041 return find_packet(cf, match_summary_line, &mdata, dir);
3045 match_summary_line(capture_file *cf, frame_data *fdata, void *criterion)
3047 match_data *mdata = (match_data *)criterion;
3048 const gchar *string = mdata->string;
3049 size_t string_len = mdata->string_len;
3051 const char *info_column;
3052 size_t info_column_len;
3053 match_result result = MR_NOTMATCHED;
3059 /* Load the frame's data. */
3060 if (!cf_read_frame(cf, fdata)) {
3061 /* Attempt to get the packet failed. */
3065 /* Don't bother constructing the protocol tree */
3066 epan_dissect_init(&edt, FALSE, FALSE);
3067 /* Get the column information */
3068 epan_dissect_run(&edt, &cf->phdr, cf->pd, fdata, &cf->cinfo);
3070 /* Find the Info column */
3071 for (colx = 0; colx < cf->cinfo.num_cols; colx++) {
3072 if (cf->cinfo.fmt_matx[colx][COL_INFO]) {
3073 /* Found it. See if we match. */
3074 info_column = edt.pi.cinfo->col_data[colx];
3075 info_column_len = strlen(info_column);
3076 for (i = 0; i < info_column_len; i++) {
3077 c_char = info_column[i];
3079 c_char = toupper(c_char);
3080 if (c_char == string[c_match]) {
3082 if (c_match == string_len) {
3083 result = MR_MATCHED;
3092 epan_dissect_cleanup(&edt);
3099 } cbs_t; /* "Counted byte string" */
3103 * The current match_* routines only support ASCII case insensitivity and don't
3104 * convert UTF-8 inputs to UTF-16 for matching.
3106 * We could modify them to use the GLib Unicode routines or the International
3107 * Components for Unicode library but it's not apparent that we could do so
3108 * without consuming a lot more CPU and memory or that searching would be
3109 * significantly better.
3113 cf_find_packet_data(capture_file *cf, const guint8 *string, size_t string_size,
3114 search_direction dir)
3119 info.data_len = string_size;
3121 /* String or hex search? */
3123 /* String search - what type of string? */
3124 switch (cf->scs_type) {
3126 case SCS_NARROW_AND_WIDE:
3127 return find_packet(cf, match_narrow_and_wide, &info, dir);
3130 return find_packet(cf, match_narrow, &info, dir);
3133 return find_packet(cf, match_wide, &info, dir);
3136 g_assert_not_reached();
3140 return find_packet(cf, match_binary, &info, dir);
3144 match_narrow_and_wide(capture_file *cf, frame_data *fdata, void *criterion)
3146 cbs_t *info = (cbs_t *)criterion;
3147 const guint8 *ascii_text = info->data;
3148 size_t textlen = info->data_len;
3149 match_result result;
3155 /* Load the frame's data. */
3156 if (!cf_read_frame(cf, fdata)) {
3157 /* Attempt to get the packet failed. */
3161 result = MR_NOTMATCHED;
3162 buf_len = fdata->cap_len;
3164 while (i < buf_len) {
3167 c_char = toupper(c_char);
3168 if (c_char != '\0') {
3169 if (c_char == ascii_text[c_match]) {
3171 if (c_match == textlen) {
3172 result = MR_MATCHED;
3173 cf->search_pos = i; /* Save the position of the last character
3174 for highlighting the field. */
3179 g_assert(i>=c_match);
3180 i -= (guint32)c_match;
3190 match_narrow(capture_file *cf, frame_data *fdata, void *criterion)
3192 cbs_t *info = (cbs_t *)criterion;
3193 const guint8 *ascii_text = info->data;
3194 size_t textlen = info->data_len;
3195 match_result result;
3201 /* Load the frame's data. */
3202 if (!cf_read_frame(cf, fdata)) {
3203 /* Attempt to get the packet failed. */
3207 result = MR_NOTMATCHED;
3208 buf_len = fdata->cap_len;
3210 while (i < buf_len) {
3213 c_char = toupper(c_char);
3214 if (c_char == ascii_text[c_match]) {
3216 if (c_match == textlen) {
3217 result = MR_MATCHED;
3218 cf->search_pos = i; /* Save the position of the last character
3219 for highlighting the field. */
3224 g_assert(i>=c_match);
3225 i -= (guint32)c_match;
3235 match_wide(capture_file *cf, frame_data *fdata, void *criterion)
3237 cbs_t *info = (cbs_t *)criterion;
3238 const guint8 *ascii_text = info->data;
3239 size_t textlen = info->data_len;
3240 match_result result;
3246 /* Load the frame's data. */
3247 if (!cf_read_frame(cf, fdata)) {
3248 /* Attempt to get the packet failed. */
3252 result = MR_NOTMATCHED;
3253 buf_len = fdata->cap_len;
3255 while (i < buf_len) {
3258 c_char = toupper(c_char);
3259 if (c_char == ascii_text[c_match]) {
3261 if (c_match == textlen) {
3262 result = MR_MATCHED;
3263 cf->search_pos = i; /* Save the position of the last character
3264 for highlighting the field. */
3270 g_assert(i>=(c_match*2));
3271 i -= (guint32)c_match*2;
3280 match_binary(capture_file *cf, frame_data *fdata, void *criterion)
3282 cbs_t *info = (cbs_t *)criterion;
3283 const guint8 *binary_data = info->data;
3284 size_t datalen = info->data_len;
3285 match_result result;
3290 /* Load the frame's data. */
3291 if (!cf_read_frame(cf, fdata)) {
3292 /* Attempt to get the packet failed. */
3296 result = MR_NOTMATCHED;
3297 buf_len = fdata->cap_len;
3299 while (i < buf_len) {
3300 if (cf->pd[i] == binary_data[c_match]) {
3302 if (c_match == datalen) {
3303 result = MR_MATCHED;
3304 cf->search_pos = i; /* Save the position of the last character
3305 for highlighting the field. */
3310 g_assert(i>=c_match);
3311 i -= (guint32)c_match;
3320 cf_find_packet_dfilter(capture_file *cf, dfilter_t *sfcode,
3321 search_direction dir)
3323 return find_packet(cf, match_dfilter, sfcode, dir);
3327 cf_find_packet_dfilter_string(capture_file *cf, const char *filter,
3328 search_direction dir)
3333 if (!dfilter_compile(filter, &sfcode)) {
3335 * XXX - this shouldn't happen, as the filter string is machine
3340 if (sfcode == NULL) {
3342 * XXX - this shouldn't happen, as the filter string is machine
3347 result = find_packet(cf, match_dfilter, sfcode, dir);
3348 dfilter_free(sfcode);
3353 match_dfilter(capture_file *cf, frame_data *fdata, void *criterion)
3355 dfilter_t *sfcode = (dfilter_t *)criterion;
3357 match_result result;
3359 /* Load the frame's data. */
3360 if (!cf_read_frame(cf, fdata)) {
3361 /* Attempt to get the packet failed. */
3365 epan_dissect_init(&edt, TRUE, FALSE);
3366 epan_dissect_prime_dfilter(&edt, sfcode);
3367 epan_dissect_run(&edt, &cf->phdr, cf->pd, fdata, NULL);
3368 result = dfilter_apply_edt(sfcode, &edt) ? MR_MATCHED : MR_NOTMATCHED;
3369 epan_dissect_cleanup(&edt);
3374 cf_find_packet_marked(capture_file *cf, search_direction dir)
3376 return find_packet(cf, match_marked, NULL, dir);
3380 match_marked(capture_file *cf _U_, frame_data *fdata, void *criterion _U_)
3382 return fdata->flags.marked ? MR_MATCHED : MR_NOTMATCHED;
3386 cf_find_packet_time_reference(capture_file *cf, search_direction dir)
3388 return find_packet(cf, match_time_reference, NULL, dir);
3392 match_time_reference(capture_file *cf _U_, frame_data *fdata, void *criterion _U_)
3394 return fdata->flags.ref_time ? MR_MATCHED : MR_NOTMATCHED;
3398 find_packet(capture_file *cf,
3399 match_result (*match_function)(capture_file *, frame_data *, void *),
3400 void *criterion, search_direction dir)
3402 frame_data *start_fd;
3405 frame_data *new_fd = NULL;
3406 progdlg_t *progbar = NULL;
3411 GTimeVal start_time;
3412 gchar status_str[100];
3413 int progbar_nextstep;
3414 int progbar_quantum;
3416 match_result result;
3418 start_fd = cf->current_frame;
3419 if (start_fd != NULL) {
3420 /* Iterate through the list of packets, starting at the packet we've
3421 picked, calling a routine to run the filter on the packet, see if
3422 it matches, and stop if so. */
3424 framenum = start_fd->num;
3426 /* Update the progress bar when it gets to this value. */
3427 progbar_nextstep = 0;
3428 /* When we reach the value that triggers a progress bar update,
3429 bump that value by this amount. */
3430 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
3431 /* Progress so far. */
3435 g_get_current_time(&start_time);
3437 title = cf->sfilter?cf->sfilter:"";
3439 /* Create the progress bar if necessary.
3440 We check on every iteration of the loop, so that it takes no
3441 longer than the standard time to create it (otherwise, for a
3442 large file, we might take considerably longer than that standard
3443 time in order to get to the next progress bar step). */
3444 if (progbar == NULL)
3445 progbar = delayed_create_progress_dlg(cf->window, "Searching", title,
3446 FALSE, &stop_flag, &start_time, progbar_val);
3448 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
3449 when we update it, we have to run the GTK+ main loop to get it
3450 to repaint what's pending, and doing so may involve an "ioctl()"
3451 to see if there's any pending input from an X server, and doing
3452 that for every packet can be costly, especially on a big file. */
3453 if (count >= progbar_nextstep) {
3454 /* let's not divide by zero. I should never be started
3455 * with count == 0, so let's assert that
3457 g_assert(cf->count > 0);
3459 progbar_val = (gfloat) count / cf->count;
3461 if (progbar != NULL) {
3462 g_snprintf(status_str, sizeof(status_str),
3463 "%4u of %u packets", count, cf->count);
3464 update_progress_dlg(progbar, progbar_val, status_str);
3467 progbar_nextstep += progbar_quantum;
3471 /* Well, the user decided to abort the search. Go back to the
3472 frame where we started. */
3477 /* Go past the current frame. */
3478 if (dir == SD_BACKWARD) {
3479 /* Go on to the previous frame. */
3480 if (framenum == 1) {
3482 * XXX - other apps have a bit more of a detailed message
3483 * for this, and instead of offering "OK" and "Cancel",
3484 * they offer things such as "Continue" and "Cancel";
3485 * we need an API for popping up alert boxes with
3486 * {Verb} and "Cancel".
3489 if (prefs.gui_find_wrap)
3491 statusbar_push_temporary_msg("Search reached the beginning. Continuing at end.");
3492 framenum = cf->count; /* wrap around */
3496 statusbar_push_temporary_msg("Search reached the beginning.");
3497 framenum = start_fd->num; /* stay on previous packet */
3502 /* Go on to the next frame. */
3503 if (framenum == cf->count) {
3504 if (prefs.gui_find_wrap)
3506 statusbar_push_temporary_msg("Search reached the end. Continuing at beginning.");
3507 framenum = 1; /* wrap around */
3511 statusbar_push_temporary_msg("Search reached the end.");
3512 framenum = start_fd->num; /* stay on previous packet */
3517 fdata = frame_data_sequence_find(cf->frames, framenum);
3521 /* Is this packet in the display? */
3522 if (fdata->flags.passed_dfilter) {
3523 /* Yes. Does it match the search criterion? */
3524 result = (*match_function)(cf, fdata, criterion);
3525 if (result == MR_ERROR) {
3526 /* Error; our caller has reported the error. Go back to the frame
3527 where we started. */
3530 } else if (result == MR_MATCHED) {
3531 /* Yes. Go to the new frame. */
3537 if (fdata == start_fd) {
3538 /* We're back to the frame we were on originally, and that frame
3539 doesn't match the search filter. The search failed. */
3544 /* We're done scanning the packets; destroy the progress bar if it
3546 if (progbar != NULL)
3547 destroy_progress_dlg(progbar);
3550 if (new_fd != NULL) {
3551 /* Find and select */
3552 cf->search_in_progress = TRUE;
3553 found = packet_list_select_row_from_data(new_fd);
3554 cf->search_in_progress = FALSE;
3555 cf->search_pos = 0; /* Reset the position */
3557 /* We didn't find a row corresponding to this frame.
3558 This means that the frame isn't being displayed currently,
3559 so we can't select it. */
3560 simple_message_box(ESD_TYPE_INFO, NULL,
3561 "The capture file is probably not fully dissected.",
3562 "End of capture exceeded!");
3565 return TRUE; /* success */
3567 return FALSE; /* failure */
3571 cf_goto_frame(capture_file *cf, guint fnumber)
3575 fdata = frame_data_sequence_find(cf->frames, fnumber);
3577 if (fdata == NULL) {
3578 /* we didn't find a packet with that packet number */
3579 statusbar_push_temporary_msg("There is no packet number %u.", fnumber);
3580 return FALSE; /* we failed to go to that packet */
3582 if (!fdata->flags.passed_dfilter) {
3583 /* that packet currently isn't displayed */
3584 /* XXX - add it to the set of displayed packets? */
3585 statusbar_push_temporary_msg("Packet number %u isn't displayed.", fnumber);
3586 return FALSE; /* we failed to go to that packet */
3589 if (!packet_list_select_row_from_data(fdata)) {
3590 /* We didn't find a row corresponding to this frame.
3591 This means that the frame isn't being displayed currently,
3592 so we can't select it. */
3593 simple_message_box(ESD_TYPE_INFO, NULL,
3594 "The capture file is probably not fully dissected.",
3595 "End of capture exceeded!");
3598 return TRUE; /* we got to that packet */
3602 cf_goto_top_frame(void)
3604 /* Find and select */
3605 packet_list_select_first_row();
3606 return TRUE; /* we got to that packet */
3610 cf_goto_bottom_frame(void)
3612 /* Find and select */
3613 packet_list_select_last_row();
3614 return TRUE; /* we got to that packet */
3618 * Go to frame specified by currently selected protocol tree item.
3621 cf_goto_framenum(capture_file *cf)
3623 header_field_info *hfinfo;
3626 if (cf->finfo_selected) {
3627 hfinfo = cf->finfo_selected->hfinfo;
3629 if (hfinfo->type == FT_FRAMENUM) {
3630 framenum = fvalue_get_uinteger(&cf->finfo_selected->value);
3632 return cf_goto_frame(cf, framenum);
3639 /* Select the packet on a given row. */
3641 cf_select_packet(capture_file *cf, int row)
3643 epan_dissect_t *old_edt;
3646 /* Get the frame data struct pointer for this frame */
3647 fdata = packet_list_get_row_data(row);
3649 if (fdata == NULL) {
3650 /* XXX - if a GtkCList's selection mode is GTK_SELECTION_BROWSE, when
3651 the first entry is added to it by "real_insert_row()", that row
3652 is selected (see "real_insert_row()", in "ui/gtk/gtkclist.c", in both
3653 our version and the vanilla GTK+ version).
3655 This means that a "select-row" signal is emitted; this causes
3656 "packet_list_select_cb()" to be called, which causes "cf_select_packet()"
3659 "cf_select_packet()" fetches, above, the data associated with the
3660 row that was selected; however, as "gtk_clist_append()", which
3661 called "real_insert_row()", hasn't yet returned, we haven't yet
3662 associated any data with that row, so we get back a null pointer.
3664 We can't assume that there's only one frame in the frame list,
3665 either, as we may be filtering the display.
3667 We therefore assume that, if "row" is 0, i.e. the first row
3668 is being selected, and "cf->first_displayed" equals
3669 "cf->last_displayed", i.e. there's only one frame being
3670 displayed, that frame is the frame we want.
3672 This means we have to set "cf->first_displayed" and
3673 "cf->last_displayed" before adding the row to the
3674 GtkCList; see the comment in "add_packet_to_packet_list()". */
3676 if (row == 0 && cf->first_displayed == cf->last_displayed)
3677 fdata = frame_data_sequence_find(cf->frames, cf->first_displayed);
3680 /* If fdata _still_ isn't set simply give up. */
3681 if (fdata == NULL) {
3685 /* Get the data in that frame. */
3686 if (!cf_read_frame (cf, fdata)) {
3690 /* Record that this frame is the current frame. */
3691 cf->current_frame = fdata;
3692 cf->current_row = row;
3695 /* Create the logical protocol tree. */
3696 /* We don't need the columns here. */
3697 cf->edt = epan_dissect_new(TRUE, TRUE);
3699 tap_build_interesting(cf->edt);
3700 epan_dissect_run(cf->edt, &cf->phdr, cf->pd, cf->current_frame,
3703 dfilter_macro_build_ftv_cache(cf->edt->tree);
3705 cf_callback_invoke(cf_cb_packet_selected, cf);
3707 if (old_edt != NULL)
3708 epan_dissect_free(old_edt);
3712 /* Unselect the selected packet, if any. */
3714 cf_unselect_packet(capture_file *cf)
3716 epan_dissect_t *old_edt = cf->edt;
3720 /* No packet is selected. */
3721 cf->current_frame = NULL;
3722 cf->current_row = 0;
3724 cf_callback_invoke(cf_cb_packet_unselected, cf);
3726 /* No protocol tree means no selected field. */
3727 cf_unselect_field(cf);
3729 /* Destroy the epan_dissect_t for the unselected packet. */
3730 if (old_edt != NULL)
3731 epan_dissect_free(old_edt);
3734 /* Unset the selected protocol tree field, if any. */
3736 cf_unselect_field(capture_file *cf)
3738 cf->finfo_selected = NULL;
3740 cf_callback_invoke(cf_cb_field_unselected, cf);
3744 * Mark a particular frame.
3747 cf_mark_frame(capture_file *cf, frame_data *frame)
3749 if (! frame->flags.marked) {
3750 frame->flags.marked = TRUE;
3751 if (cf->count > cf->marked_count)
3757 * Unmark a particular frame.
3760 cf_unmark_frame(capture_file *cf, frame_data *frame)
3762 if (frame->flags.marked) {
3763 frame->flags.marked = FALSE;
3764 if (cf->marked_count > 0)
3770 * Ignore a particular frame.
3773 cf_ignore_frame(capture_file *cf, frame_data *frame)
3775 if (! frame->flags.ignored) {
3776 frame->flags.ignored = TRUE;
3777 if (cf->count > cf->ignored_count)
3778 cf->ignored_count++;
3783 * Un-ignore a particular frame.
3786 cf_unignore_frame(capture_file *cf, frame_data *frame)
3788 if (frame->flags.ignored) {
3789 frame->flags.ignored = FALSE;
3790 if (cf->ignored_count > 0)
3791 cf->ignored_count--;
3796 * Read the comment in SHB block
3800 cf_read_shb_comment(capture_file *cf)
3802 wtapng_section_t *shb_inf;
3803 const gchar *temp_str;
3805 /* Get info from SHB */
3806 shb_inf = wtap_file_get_shb_info(cf->wth);
3807 if (shb_inf == NULL)
3809 temp_str = shb_inf->opt_comment;
3817 cf_update_capture_comment(capture_file *cf, gchar *comment)
3819 wtapng_section_t *shb_inf;
3821 /* Get info from SHB */
3822 shb_inf = wtap_file_get_shb_info(cf->wth);
3824 /* See if the comment has changed or not */
3825 if (shb_inf && shb_inf->opt_comment) {
3826 if (strcmp(shb_inf->opt_comment, comment) == 0) {
3835 /* The comment has changed, let's update it */
3836 wtap_write_shb_comment(cf->wth, comment);
3837 /* Mark the file as having unsaved changes */
3838 cf->unsaved_changes = TRUE;
3842 cf_update_packet_comment(capture_file *cf, frame_data *fdata, gchar *comment)
3844 if (fdata->opt_comment != NULL) {
3845 /* OK, remove the old comment. */
3846 g_free(fdata->opt_comment);
3847 fdata->opt_comment = NULL;
3848 cf->packet_comment_count--;
3850 if (comment != NULL) {
3851 /* Add the new comment. */
3852 fdata->opt_comment = comment;
3853 cf->packet_comment_count++;
3856 /* OK, we have unsaved changes. */
3857 cf->unsaved_changes = TRUE;
3861 * What types of comments does this capture file have?
3864 cf_comment_types(capture_file *cf)
3866 guint32 comment_types = 0;
3868 if (cf_read_shb_comment(cf) != NULL)
3869 comment_types |= WTAP_COMMENT_PER_SECTION;
3870 if (cf->packet_comment_count != 0)
3871 comment_types |= WTAP_COMMENT_PER_PACKET;
3872 return comment_types;
3879 } save_callback_args_t;
3882 * Save a capture to a file, in a particular format, saving either
3883 * all packets, all currently-displayed packets, or all marked packets.
3885 * Returns TRUE if it succeeds, FALSE otherwise; if it fails, it pops
3886 * up a message box for the failure.
3889 save_packet(capture_file *cf _U_, frame_data *fdata,
3890 struct wtap_pkthdr *phdr, const guint8 *pd,
3893 save_callback_args_t *args = (save_callback_args_t *)argsp;
3894 struct wtap_pkthdr hdr;
3896 gchar *display_basename;
3898 /* init the wtap header for saving */
3899 /* TODO: reuse phdr */
3900 /* XXX - these are the only flags that correspond to data that we have
3901 in the frame_data structure and that matter on a per-packet basis.
3903 For WTAP_HAS_CAP_LEN, either the file format has separate "captured"
3904 and "on the wire" lengths, or it doesn't.
3906 For WTAP_HAS_DROP_COUNT, Wiretap doesn't actually supply the value
3909 For WTAP_HAS_PACK_FLAGS, we currently don't save the FCS length
3910 from the packet flags. */
3911 hdr.presence_flags = 0;
3912 if (fdata->flags.has_ts)
3913 hdr.presence_flags |= WTAP_HAS_TS;
3914 if (fdata->flags.has_if_id)
3915 hdr.presence_flags |= WTAP_HAS_INTERFACE_ID;
3916 if (fdata->flags.has_pack_flags)
3917 hdr.presence_flags |= WTAP_HAS_PACK_FLAGS;
3918 hdr.ts.secs = fdata->abs_ts.secs;
3919 hdr.ts.nsecs = fdata->abs_ts.nsecs;
3920 hdr.caplen = fdata->cap_len;
3921 hdr.len = fdata->pkt_len;
3922 hdr.pkt_encap = fdata->lnk_t;
3924 hdr.interface_id = fdata->interface_id; /* identifier of the interface. */
3926 hdr.pack_flags = fdata->pack_flags;
3927 hdr.opt_comment = fdata->opt_comment; /* NULL if not available */
3929 hdr.pseudo_header = phdr->pseudo_header;
3932 hdr.pack_flags = /* XXX - 0 for now (any value for "we don't have it"?) */
3934 /* and save the packet */
3935 if (!wtap_dump(args->pdh, &hdr, pd, &err)) {
3937 /* Wiretap error. */
3940 case WTAP_ERR_UNSUPPORTED_ENCAP:
3942 * This is a problem with the particular frame we're writing;
3943 * note that, and give the frame number.
3945 simple_error_message_box(
3946 "Frame %u has a network type that can't be saved in a \"%s\" file.",
3947 fdata->num, wtap_file_type_string(args->file_type));
3951 display_basename = g_filename_display_basename(args->fname);
3952 simple_error_message_box(
3953 "An error occurred while writing to the file \"%s\": %s.",
3954 display_basename, wtap_strerror(err));
3955 g_free(display_basename);
3960 write_failure_alert_box(args->fname, err);
3968 * Can this capture file be written out in any format using Wiretap
3969 * rather than by copying the raw data?
3972 cf_can_write_with_wiretap(capture_file *cf)
3974 /* We don't care whether we support the comments in this file or not;
3975 if we can't, we'll offer the user the option of discarding the
3977 return wtap_dump_can_write(cf->linktypes, 0);
3981 * Should we let the user do a save?
3985 * the file has unsaved changes, and we can save it in some
3986 * format through Wiretap
3990 * the file is a temporary file and has no unsaved changes (so
3991 * that "saving" it just means copying it).
3993 * XXX - we shouldn't allow files to be edited if they can't be saved,
3994 * so cf->unsaved_changes should be true only if the file can be saved.
3996 * We don't care whether we support the comments in this file or not;
3997 * if we can't, we'll offer the user the option of discarding the
4001 cf_can_save(capture_file *cf)
4003 if (cf->unsaved_changes && wtap_dump_can_write(cf->linktypes, 0)) {
4004 /* Saved changes, and we can write it out with Wiretap. */
4008 if (cf->is_tempfile && !cf->unsaved_changes) {
4010 * Temporary file with no unsaved changes, so we can just do a
4016 /* Nothing to save. */
4021 * Should we let the user do a "save as"?
4025 * we can save it in some format through Wiretap
4029 * the file is a temporary file and has no unsaved changes (so
4030 * that "saving" it just means copying it).
4032 * XXX - we shouldn't allow files to be edited if they can't be saved,
4033 * so cf->unsaved_changes should be true only if the file can be saved.
4035 * We don't care whether we support the comments in this file or not;
4036 * if we can't, we'll offer the user the option of discarding the
4040 cf_can_save_as(capture_file *cf)
4042 if (wtap_dump_can_write(cf->linktypes, 0)) {
4043 /* We can write it out with Wiretap. */
4047 if (cf->is_tempfile && !cf->unsaved_changes) {
4049 * Temporary file with no unsaved changes, so we can just do a
4055 /* Nothing to save. */
4060 * Does this file have unsaved data?
4063 cf_has_unsaved_data(capture_file *cf)
4066 * If this is a temporary file, or a file with unsaved changes, it
4069 return cf->is_tempfile || cf->unsaved_changes;
4073 * Quick scan to find packet offsets.
4075 static cf_read_status_t
4076 rescan_file(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
4078 const struct wtap_pkthdr *phdr;
4083 progdlg_t *progbar = NULL;
4087 GTimeVal start_time;
4088 gchar status_str[100];
4089 gint64 progbar_nextstep;
4090 gint64 progbar_quantum;
4095 int displayed_once = 0;
4098 /* Close the old handle. */
4099 wtap_close(cf->wth);
4101 /* Open the new file. */
4102 cf->wth = wtap_open_offline(fname, err, &err_info, TRUE);
4103 if (cf->wth == NULL) {
4104 cf_open_failure_alert_box(fname, *err, err_info, FALSE, 0);
4105 return CF_READ_ERROR;
4108 /* We're scanning a file whose contents should be the same as what
4109 we had before, so we don't discard dissection state etc.. */
4112 /* Set the file name because we need it to set the follow stream filter.
4113 XXX - is that still true? We need it for other reasons, though,
4115 cf->filename = g_strdup(fname);
4117 /* Indicate whether it's a permanent or temporary file. */
4118 cf->is_tempfile = is_tempfile;
4120 /* No user changes yet. */
4121 cf->unsaved_changes = FALSE;
4123 cf->cd_t = wtap_file_type(cf->wth);
4124 cf->linktypes = g_array_sized_new(FALSE, FALSE, (guint) sizeof(int), 1);
4126 cf->snap = wtap_snapshot_length(cf->wth);
4127 if (cf->snap == 0) {
4128 /* Snapshot length not known. */
4129 cf->has_snap = FALSE;
4130 cf->snap = WTAP_MAX_PACKET_SIZE;
4132 cf->has_snap = TRUE;
4134 name_ptr = g_filename_display_basename(cf->filename);
4136 cf_callback_invoke(cf_cb_file_rescan_started, cf);
4138 /* Record whether the file is compressed.
4139 XXX - do we know this at open time? */
4140 cf->iscompressed = wtap_iscompressed(cf->wth);
4142 /* Find the size of the file. */
4143 size = wtap_file_size(cf->wth, NULL);
4145 /* Update the progress bar when it gets to this value. */
4146 progbar_nextstep = 0;
4147 /* When we reach the value that triggers a progress bar update,
4148 bump that value by this amount. */
4150 progbar_quantum = size/N_PROGBAR_UPDATES;
4151 if (progbar_quantum < MIN_QUANTUM)
4152 progbar_quantum = MIN_QUANTUM;
4154 progbar_quantum = 0;
4155 /* Progress so far. */
4159 g_get_current_time(&start_time);
4162 phdr = wtap_phdr(cf->wth);
4163 while ((wtap_read(cf->wth, err, &err_info, &data_offset))) {
4165 fdata = frame_data_sequence_find(cf->frames, framenum);
4166 fdata->file_off = data_offset;
4169 file_pos = wtap_read_so_far(cf->wth);
4171 /* Create the progress bar if necessary.
4172 * Check whether it should be created or not every MIN_NUMBER_OF_PACKET
4174 if ((progbar == NULL) && !(count % MIN_NUMBER_OF_PACKET)) {
4175 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
4176 progbar = delayed_create_progress_dlg(cf->window, "Rescanning", name_ptr,
4177 TRUE, &stop_flag, &start_time, progbar_val);
4180 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
4181 when we update it, we have to run the GTK+ main loop to get it
4182 to repaint what's pending, and doing so may involve an "ioctl()"
4183 to see if there's any pending input from an X server, and doing
4184 that for every packet can be costly, especially on a big file. */
4185 if (file_pos >= progbar_nextstep) {
4186 if (progbar != NULL) {
4187 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
4188 /* update the packet bar content on the first run or frequently on very large files */
4190 if (progbar_quantum > 500000 || displayed_once == 0) {
4191 if ((auto_scroll_live || displayed_once == 0 || cf->displayed_count < 1000) && cf->count != 0) {
4193 packets_bar_update();
4196 #endif /* HAVE_LIBPCAP */
4197 update_progress_dlg(progbar, progbar_val, status_str);
4199 progbar_nextstep += progbar_quantum;
4204 /* Well, the user decided to abort the rescan. Sadly, as this
4205 isn't a reread, recovering is difficult, so we'll just
4206 close the current capture. */
4210 /* Add this packet's link-layer encapsulation type to cf->linktypes, if
4211 it's not already there.
4212 XXX - yes, this is O(N), so if every packet had a different
4213 link-layer encapsulation type, it'd be O(N^2) to read the file, but
4214 there are probably going to be a small number of encapsulation types
4216 cf_add_encapsulation_type(cf, phdr->pkt_encap);
4219 /* Free the display name */
4222 /* We're done reading the file; destroy the progress bar if it was created. */
4223 if (progbar != NULL)
4224 destroy_progress_dlg(progbar);
4226 /* We're done reading sequentially through the file. */
4227 cf->state = FILE_READ_DONE;
4229 /* Close the sequential I/O side, to free up memory it requires. */
4230 wtap_sequential_close(cf->wth);
4232 /* compute the time it took to load the file */
4233 compute_elapsed(&start_time);
4235 /* Set the file encapsulation type now; we don't know what it is until
4236 we've looked at all the packets, as we don't know until then whether
4237 there's more than one type (and thus whether it's
4238 WTAP_ENCAP_PER_PACKET). */
4239 cf->lnk_t = wtap_file_encap(cf->wth);
4241 cf_callback_invoke(cf_cb_file_rescan_finished, cf);
4244 /* Our caller will give up at this point. */
4245 return CF_READ_ABORTED;
4249 /* Put up a message box noting that the read failed somewhere along
4250 the line. Don't throw out the stuff we managed to read, though,
4254 case WTAP_ERR_UNSUPPORTED:
4255 simple_error_message_box(
4256 "The capture file contains record data that Wireshark doesn't support.\n(%s)",
4261 case WTAP_ERR_UNSUPPORTED_ENCAP:
4262 simple_error_message_box(
4263 "The capture file has a packet with a network type that Wireshark doesn't support.\n(%s)",
4268 case WTAP_ERR_CANT_READ:
4269 simple_error_message_box(
4270 "An attempt to read from the capture file failed for"
4271 " some unknown reason.");
4274 case WTAP_ERR_SHORT_READ:
4275 simple_error_message_box(
4276 "The capture file appears to have been cut short"
4277 " in the middle of a packet.");
4280 case WTAP_ERR_BAD_FILE:
4281 simple_error_message_box(
4282 "The capture file appears to be damaged or corrupt.\n(%s)",
4287 case WTAP_ERR_DECOMPRESS:
4288 simple_error_message_box(
4289 "The compressed capture file appears to be damaged or corrupt.\n"
4295 simple_error_message_box(
4296 "An error occurred while reading the"
4297 " capture file: %s.", wtap_strerror(*err));
4300 return CF_READ_ERROR;
4306 cf_save_packets(capture_file *cf, const char *fname, guint save_format,
4307 gboolean compressed, gboolean discard_comments,
4308 gboolean dont_reopen)
4310 gchar *fname_new = NULL;
4319 save_callback_args_t callback_args;
4321 gchar *display_basename;
4326 cf_callback_invoke(cf_cb_file_save_started, (gpointer)fname);
4328 if (save_format == cf->cd_t && compressed == cf->iscompressed
4329 && !discard_comments && !cf->unsaved_changes) {
4330 /* We're saving in the format it's already in, and we're
4331 not discarding comments, and there are no changes we have
4332 in memory that aren't saved to the file, so we can just move
4333 or copy the raw data. */
4335 if (cf->is_tempfile) {
4336 /* The file being saved is a temporary file from a live
4337 capture, so it doesn't need to stay around under that name;
4338 first, try renaming the capture buffer file to the new name.
4339 This acts as a "safe save", in that, if the file already
4340 exists, the existing file will be removed only if the rename
4343 Sadly, on Windows, as we have the current capture file
4344 open, even MoveFileEx() with MOVEFILE_REPLACE_EXISTING
4345 (to cause the rename to remove an existing target), as
4346 done by ws_stdio_rename() (ws_rename() is #defined to
4347 be ws_stdio_rename() on Windows) will fail.
4349 According to the MSDN documentation for CreateFile(), if,
4350 when we open a capture file, we were to directly do a CreateFile(),
4351 opening with FILE_SHARE_DELETE|FILE_SHARE_READ, and then
4352 convert it to a file descriptor with _open_osfhandle(),
4353 that would allow the file to be renamed out from under us.
4355 However, that doesn't work in practice. Perhaps the problem
4356 is that the process doing the rename is the process that
4357 has the file open. */
4359 if (ws_rename(cf->filename, fname) == 0) {
4360 /* That succeeded - there's no need to copy the source file. */
4361 how_to_save = SAVE_WITH_MOVE;
4363 if (errno == EXDEV) {
4364 /* They're on different file systems, so we have to copy the
4366 how_to_save = SAVE_WITH_COPY;
4368 /* The rename failed, but not because they're on different
4369 file systems - put up an error message. (Or should we
4370 just punt and try to copy? The only reason why I'd
4371 expect the rename to fail and the copy to succeed would
4372 be if we didn't have permission to remove the file from
4373 the temporary directory, and that might be fixable - but
4374 is it worth requiring the user to go off and fix it?) */
4375 cf_rename_failure_alert_box(fname, errno);
4380 how_to_save = SAVE_WITH_COPY;
4383 /* It's a permanent file, so we should copy it, and not remove the
4385 how_to_save = SAVE_WITH_COPY;
4388 if (how_to_save == SAVE_WITH_COPY) {
4389 /* Copy the file, if we haven't moved it. If we're overwriting
4390 an existing file, we do it with a "safe save", by writing
4391 to a new file and, if the write succeeds, renaming the
4392 new file on top of the old file. */
4393 if (file_exists(fname)) {
4394 fname_new = g_strdup_printf("%s~", fname);
4395 if (!copy_file_binary_mode(cf->filename, fname_new))
4398 if (!copy_file_binary_mode(cf->filename, fname))
4403 /* Either we're saving in a different format or we're saving changes,
4404 such as added, modified, or removed comments, that haven't yet
4405 been written to the underlying file; we can't do that by copying
4406 or moving the capture file, we have to do it by writing the packets
4409 wtapng_section_t *shb_hdr = NULL;
4410 wtapng_iface_descriptions_t *idb_inf = NULL;
4413 shb_hdr = wtap_file_get_shb_info(cf->wth);
4414 idb_inf = wtap_file_get_idb_info(cf->wth);
4416 /* Determine what file encapsulation type we should use. */
4417 encap = wtap_dump_file_encap_type(cf->linktypes);
4419 if (file_exists(fname)) {
4420 /* We're overwriting an existing file; write out to a new file,
4421 and, if that succeeds, rename the new file on top of the
4422 old file. That makes this a "safe save", so that we don't
4423 lose the old file if we have a problem writing out the new
4424 file. (If the existing file is the current capture file,
4425 we *HAVE* to do that, otherwise we're overwriting the file
4426 from which we're reading the packets that we're writing!) */
4427 fname_new = g_strdup_printf("%s~", fname);
4428 pdh = wtap_dump_open_ng(fname_new, save_format, encap, cf->snap,
4429 compressed, shb_hdr, idb_inf, &err);
4431 pdh = wtap_dump_open_ng(fname, save_format, encap, cf->snap,
4432 compressed, shb_hdr, idb_inf, &err);
4438 cf_open_failure_alert_box(fname, err, NULL, TRUE, save_format);
4442 /* Add address resolution */
4443 wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list());
4445 /* Iterate through the list of packets, processing all the packets. */
4446 callback_args.pdh = pdh;
4447 callback_args.fname = fname;
4448 callback_args.file_type = save_format;
4449 switch (process_specified_packets(cf, NULL, "Saving", "packets",
4450 TRUE, save_packet, &callback_args)) {
4453 /* Completed successfully. */
4457 /* The user decided to abort the saving.
4458 If we're writing to a temporary file, remove it.
4459 XXX - should we do so even if we're not writing to a
4461 wtap_dump_close(pdh, &err);
4462 if (fname_new != NULL)
4463 ws_unlink(fname_new);
4464 cf_callback_invoke(cf_cb_file_save_stopped, NULL);
4465 return CF_WRITE_ABORTED;
4468 /* Error while saving.
4469 If we're writing to a temporary file, remove it. */
4470 if (fname_new != NULL)
4471 ws_unlink(fname_new);
4472 wtap_dump_close(pdh, &err);
4476 if (!wtap_dump_close(pdh, &err)) {
4477 cf_close_failure_alert_box(fname, err);
4481 how_to_save = SAVE_WITH_WTAP;
4484 if (fname_new != NULL) {
4485 /* We wrote out to fname_new, and should rename it on top of
4486 fname. fname_new is now closed, so that should be possible even
4487 on Windows. However, on Windows, we first need to close whatever
4488 file descriptors we have open for fname. */
4490 wtap_fdclose(cf->wth);
4492 /* Now do the rename. */
4493 if (ws_rename(fname_new, fname) == -1) {
4494 /* Well, the rename failed. */
4495 cf_rename_failure_alert_box(fname, errno);
4497 /* Attempt to reopen the random file descriptor using the
4498 current file's filename. (At this point, the sequential
4499 file descriptor is closed.) */
4500 if (!wtap_fdreopen(cf->wth, cf->filename, &err)) {
4501 /* Oh, well, we're screwed. */
4502 display_basename = g_filename_display_basename(cf->filename);
4503 simple_error_message_box(
4504 file_open_error_message(err, FALSE), display_basename);
4505 g_free(display_basename);
4512 cf_callback_invoke(cf_cb_file_save_finished, NULL);
4513 cf->unsaved_changes = FALSE;
4516 switch (how_to_save) {
4518 case SAVE_WITH_MOVE:
4519 /* We just moved the file, so the wtap structure refers to the
4520 new file, and all the information other than the filename
4521 and the "is temporary" status applies to the new file; just
4523 g_free(cf->filename);
4524 cf->filename = g_strdup(fname);
4525 cf->is_tempfile = FALSE;
4526 cf_callback_invoke(cf_cb_file_fast_save_finished, cf);
4529 case SAVE_WITH_COPY:
4530 /* We just copied the file, s all the information other than
4531 the wtap structure, the filename, and the "is temporary"
4532 status applies to the new file; just update that. */
4533 wtap_close(cf->wth);
4534 cf->wth = wtap_open_offline(fname, &err, &err_info, TRUE);
4535 if (cf->wth == NULL) {
4536 cf_open_failure_alert_box(fname, err, err_info, FALSE, 0);
4539 g_free(cf->filename);
4540 cf->filename = g_strdup(fname);
4541 cf->is_tempfile = FALSE;
4543 cf_callback_invoke(cf_cb_file_fast_save_finished, cf);
4546 case SAVE_WITH_WTAP:
4547 /* Open and read the file we saved to.
4549 XXX - this is somewhat of a waste; we already have the
4550 packets, all this gets us is updated file type information
4551 (which we could just stuff into "cf"), and having the new
4552 file be the one we have opened and from which we're reading
4553 the data, and it means we have to spend time opening and
4554 reading the file, which could be a significant amount of
4555 time if the file is large.
4557 If the capture-file-writing code were to return the
4558 seek offset of each packet it writes, we could save that
4559 in the frame_data structure for the frame, and just open
4560 the file without reading it again...
4562 ...as long as, for gzipped files, the process of writing
4563 out the file *also* generates the information needed to
4564 support fast random access to the compressed file. */
4565 if (rescan_file(cf, fname, FALSE, &err) != CF_READ_OK) {
4566 /* The rescan failed; just close the file. Either
4567 a dialog was popped up for the failure, so the
4568 user knows what happened, or they stopped the
4569 rescan, in which case they know what happened. */
4575 /* If we were told to discard the comments, do so. */
4576 if (discard_comments) {
4577 /* Remove SHB comment, if any. */
4578 wtap_write_shb_comment(cf->wth, NULL);
4580 /* Remove packet comments. */
4581 for (framenum = 1; framenum <= cf->count; framenum++) {
4582 fdata = frame_data_sequence_find(cf->frames, framenum);
4583 if (fdata->opt_comment) {
4584 g_free(fdata->opt_comment);
4585 fdata->opt_comment = NULL;
4586 cf->packet_comment_count--;
4594 if (fname_new != NULL) {
4595 /* We were trying to write to a temporary file; get rid of it if it
4596 exists. (We don't care whether this fails, as, if it fails,
4597 there's not much we can do about it. I guess if it failed for
4598 a reason other than "it doesn't exist", we could report an
4599 error, so the user knows there's a junk file that they might
4600 want to clean up.) */
4601 ws_unlink(fname_new);
4604 cf_callback_invoke(cf_cb_file_save_failed, NULL);
4605 return CF_WRITE_ERROR;
4609 cf_export_specified_packets(capture_file *cf, const char *fname,
4610 packet_range_t *range, guint save_format,
4611 gboolean compressed)
4613 gchar *fname_new = NULL;
4616 save_callback_args_t callback_args;
4617 wtapng_section_t *shb_hdr;
4618 wtapng_iface_descriptions_t *idb_inf;
4621 cf_callback_invoke(cf_cb_file_export_specified_packets_started, (gpointer)fname);
4623 packet_range_process_init(range);
4625 /* We're writing out specified packets from the specified capture
4626 file to another file. Even if all captured packets are to be
4627 written, don't special-case the operation - read each packet
4628 and then write it out if it's one of the specified ones. */
4630 shb_hdr = wtap_file_get_shb_info(cf->wth);
4631 idb_inf = wtap_file_get_idb_info(cf->wth);
4633 /* Determine what file encapsulation type we should use. */
4634 encap = wtap_dump_file_encap_type(cf->linktypes);
4636 if (file_exists(fname)) {
4637 /* We're overwriting an existing file; write out to a new file,
4638 and, if that succeeds, rename the new file on top of the
4639 old file. That makes this a "safe save", so that we don't
4640 lose the old file if we have a problem writing out the new
4641 file. (If the existing file is the current capture file,
4642 we *HAVE* to do that, otherwise we're overwriting the file
4643 from which we're reading the packets that we're writing!) */
4644 fname_new = g_strdup_printf("%s~", fname);
4645 pdh = wtap_dump_open_ng(fname_new, save_format, encap, cf->snap,
4646 compressed, shb_hdr, idb_inf, &err);
4648 pdh = wtap_dump_open_ng(fname, save_format, encap, cf->snap,
4649 compressed, shb_hdr, idb_inf, &err);
4655 cf_open_failure_alert_box(fname, err, NULL, TRUE, save_format);
4659 /* Add address resolution */
4660 wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list());
4662 /* Iterate through the list of packets, processing the packets we were
4665 XXX - we've already called "packet_range_process_init(range)", but
4666 "process_specified_packets()" will do it again. Fortunately,
4667 that's harmless in this case, as we haven't done anything to
4668 "range" since we initialized it. */
4669 callback_args.pdh = pdh;
4670 callback_args.fname = fname;
4671 callback_args.file_type = save_format;
4672 switch (process_specified_packets(cf, range, "Writing", "specified packets",
4673 TRUE, save_packet, &callback_args)) {
4676 /* Completed successfully. */
4680 /* The user decided to abort the saving.
4681 If we're writing to a temporary file, remove it.
4682 XXX - should we do so even if we're not writing to a
4684 wtap_dump_close(pdh, &err);
4685 if (fname_new != NULL)
4686 ws_unlink(fname_new);
4687 cf_callback_invoke(cf_cb_file_export_specified_packets_stopped, NULL);
4688 return CF_WRITE_ABORTED;
4692 /* Error while saving.
4693 If we're writing to a temporary file, remove it. */
4694 if (fname_new != NULL)
4695 ws_unlink(fname_new);
4696 wtap_dump_close(pdh, &err);
4700 if (!wtap_dump_close(pdh, &err)) {
4701 cf_close_failure_alert_box(fname, err);
4705 if (fname_new != NULL) {
4706 /* We wrote out to fname_new, and should rename it on top of
4707 fname; fname is now closed, so that should be possible even
4708 on Windows. Do the rename. */
4709 if (ws_rename(fname_new, fname) == -1) {
4710 /* Well, the rename failed. */
4711 cf_rename_failure_alert_box(fname, errno);
4716 cf_callback_invoke(cf_cb_file_export_specified_packets_finished, NULL);
4720 if (fname_new != NULL) {
4721 /* We were trying to write to a temporary file; get rid of it if it
4722 exists. (We don't care whether this fails, as, if it fails,
4723 there's not much we can do about it. I guess if it failed for
4724 a reason other than "it doesn't exist", we could report an
4725 error, so the user knows there's a junk file that they might
4726 want to clean up.) */
4727 ws_unlink(fname_new);
4730 cf_callback_invoke(cf_cb_file_export_specified_packets_failed, NULL);
4731 return CF_WRITE_ERROR;
4735 cf_open_failure_alert_box(const char *filename, int err, gchar *err_info,
4736 gboolean for_writing, int file_type)
4738 gchar *display_basename;
4741 /* Wiretap error. */
4742 display_basename = g_filename_display_basename(filename);
4745 case WTAP_ERR_NOT_REGULAR_FILE:
4746 simple_error_message_box(
4747 "The file \"%s\" is a \"special file\" or socket or other non-regular file.",
4751 case WTAP_ERR_RANDOM_OPEN_PIPE:
4752 /* Seen only when opening a capture file for reading. */
4753 simple_error_message_box(
4754 "The file \"%s\" is a pipe or FIFO; Wireshark can't read pipe or FIFO files.\n"
4755 "To capture from a pipe or FIFO use wireshark -i -",
4759 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
4760 /* Seen only when opening a capture file for reading. */
4761 simple_error_message_box(
4762 "The file \"%s\" isn't a capture file in a format Wireshark understands.",
4766 case WTAP_ERR_UNSUPPORTED:
4767 /* Seen only when opening a capture file for reading. */
4768 simple_error_message_box(
4769 "The file \"%s\" isn't a capture file in a format Wireshark understands.\n"
4771 display_basename, err_info);
4775 case WTAP_ERR_CANT_WRITE_TO_PIPE:
4776 /* Seen only when opening a capture file for writing. */
4777 simple_error_message_box(
4778 "The file \"%s\" is a pipe, and %s capture files can't be "
4779 "written to a pipe.",
4780 display_basename, wtap_file_type_string(file_type));
4783 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
4784 /* Seen only when opening a capture file for writing. */
4785 simple_error_message_box(
4786 "Wireshark doesn't support writing capture files in that format.");
4789 case WTAP_ERR_UNSUPPORTED_ENCAP:
4791 simple_error_message_box("Wireshark can't save this capture in that format.");
4793 simple_error_message_box(
4794 "The file \"%s\" is a capture for a network type that Wireshark doesn't support.\n"
4796 display_basename, err_info);
4801 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
4803 simple_error_message_box(
4804 "Wireshark can't save this capture in that format.");
4806 simple_error_message_box(
4807 "The file \"%s\" is a capture for a network type that Wireshark doesn't support.",
4812 case WTAP_ERR_BAD_FILE:
4813 /* Seen only when opening a capture file for reading. */
4814 simple_error_message_box(
4815 "The file \"%s\" appears to be damaged or corrupt.\n"
4817 display_basename, err_info);
4821 case WTAP_ERR_CANT_OPEN:
4823 simple_error_message_box(
4824 "The file \"%s\" could not be created for some unknown reason.",
4827 simple_error_message_box(
4828 "The file \"%s\" could not be opened for some unknown reason.",
4833 case WTAP_ERR_SHORT_READ:
4834 simple_error_message_box(
4835 "The file \"%s\" appears to have been cut short"
4836 " in the middle of a packet or other data.",
4840 case WTAP_ERR_SHORT_WRITE:
4841 simple_error_message_box(
4842 "A full header couldn't be written to the file \"%s\".",
4846 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
4847 simple_error_message_box(
4848 "This file type cannot be written as a compressed file.");
4851 case WTAP_ERR_DECOMPRESS:
4852 simple_error_message_box(
4853 "The compressed file \"%s\" appears to be damaged or corrupt.\n"
4854 "(%s)", display_basename, err_info);
4859 simple_error_message_box(
4860 "The file \"%s\" could not be %s: %s.",
4862 for_writing ? "created" : "opened",
4863 wtap_strerror(err));
4866 g_free(display_basename);
4869 open_failure_alert_box(filename, err, for_writing);
4874 * XXX - whether we mention the source pathname, the target pathname,
4875 * or both depends on the error and on what we find if we look for
4876 * one or both of them.
4879 cf_rename_failure_alert_box(const char *filename, int err)
4881 gchar *display_basename;
4883 display_basename = g_filename_display_basename(filename);
4887 /* XXX - should check whether the source exists and, if not,
4888 report it as the problem and, if so, report the destination
4890 simple_error_message_box("The path to the file \"%s\" doesn't exist.",
4895 /* XXX - if we're doing a rename after a safe save, we should
4896 probably say something else. */
4897 simple_error_message_box("You don't have permission to move the capture file to \"%s\".",
4902 /* XXX - this should probably mention both the source and destination
4904 simple_error_message_box("The file \"%s\" could not be moved: %s.",
4905 display_basename, wtap_strerror(err));
4908 g_free(display_basename);
4911 /* Check for write errors - if the file is being written to an NFS server,
4912 a write error may not show up until the file is closed, as NFS clients
4913 might not send writes to the server until the "write()" call finishes,
4914 so that the write may fail on the server but the "write()" may succeed. */
4916 cf_close_failure_alert_box(const char *filename, int err)
4918 gchar *display_basename;
4921 /* Wiretap error. */
4922 display_basename = g_filename_display_basename(filename);
4925 case WTAP_ERR_CANT_CLOSE:
4926 simple_error_message_box(
4927 "The file \"%s\" couldn't be closed for some unknown reason.",
4931 case WTAP_ERR_SHORT_WRITE:
4932 simple_error_message_box(
4933 "Not all the packets could be written to the file \"%s\".",
4938 simple_error_message_box(
4939 "An error occurred while closing the file \"%s\": %s.",
4940 display_basename, wtap_strerror(err));
4943 g_free(display_basename);
4946 We assume that a close error from the OS is really a write error. */
4947 write_failure_alert_box(filename, err);
4951 /* Reload the current capture file. */
4953 cf_reload(capture_file *cf) {
4955 gboolean is_tempfile;
4958 /* If the file could be opened, "cf_open()" calls "cf_close()"
4959 to get rid of state for the old capture file before filling in state
4960 for the new capture file. "cf_close()" will remove the file if
4961 it's a temporary file; we don't want that to happen (for one thing,
4962 it'd prevent subsequent reopens from working). Remember whether it's
4963 a temporary file, mark it as not being a temporary file, and then
4964 reopen it as the type of file it was.
4966 Also, "cf_close()" will free "cf->filename", so we must make
4967 a copy of it first. */
4968 filename = g_strdup(cf->filename);
4969 is_tempfile = cf->is_tempfile;
4970 cf->is_tempfile = FALSE;
4971 if (cf_open(cf, filename, is_tempfile, &err) == CF_OK) {
4972 switch (cf_read(cf, TRUE)) {
4976 /* Just because we got an error, that doesn't mean we were unable
4977 to read any of the file; we handle what we could get from the
4981 case CF_READ_ABORTED:
4982 /* The user bailed out of re-reading the capture file; the
4983 capture file has been closed - just free the capture file name
4984 string and return (without changing the last containing
4990 /* The open failed, so "cf->is_tempfile" wasn't set to "is_tempfile".
4991 Instead, the file was left open, so we should restore "cf->is_tempfile"
4994 XXX - change the menu? Presumably "cf_open()" will do that;
4995 make sure it does! */
4996 cf->is_tempfile = is_tempfile;
4998 /* "cf_open()" made a copy of the file name we handed it, so
4999 we should free up our copy. */
5009 * indent-tabs-mode: nil
5012 * ex: set shiftwidth=2 tabstop=8 expandtab:
5013 * :indentSize=2:tabSize=8:noTabs=true: