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 epan_dissect_t *edt, 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_ascii_and_unicode(capture_file *cf, frame_data *fdata,
108 static match_result match_ascii(capture_file *cf, frame_data *fdata,
110 static match_result match_unicode(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) {
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_malloc(sizeof(cf_callback_data_t));
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) {
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 epan_dissect_finish(epan_dissect_t *edt)
502 proto_tree_free(edt->tree);
506 cf_read(capture_file *cf, gboolean reloading)
513 progdlg_t *volatile progbar = NULL;
515 volatile gint64 size;
516 volatile float progbar_val;
518 gchar status_str[100];
519 volatile gint64 progbar_nextstep;
520 volatile gint64 progbar_quantum;
524 gboolean create_proto_tree;
526 volatile int count = 0;
528 volatile int displayed_once = 0;
532 /* Compile the current display filter.
533 * We assume this will not fail since cf->dfilter is only set in
534 * cf_filter IFF the filter was valid.
536 compiled = dfilter_compile(cf->dfilter, &dfcode);
537 g_assert(!cf->dfilter || (compiled && dfcode));
539 /* Get the union of the flags for all tap listeners. */
540 tap_flags = union_of_tap_listener_flags();
541 cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
543 (dfcode != NULL || have_filtering_tap_listeners() || (tap_flags & TL_REQUIRES_PROTO_TREE));
544 epan_dissect_init(&edt, create_proto_tree, FALSE);
546 epan_dissect_prime_dfilter(&edt, dfcode);
548 reset_tap_listeners();
550 name_ptr = g_filename_display_basename(cf->filename);
553 cf_callback_invoke(cf_cb_file_reload_started, cf);
555 cf_callback_invoke(cf_cb_file_read_started, cf);
557 /* Record whether the file is compressed.
558 XXX - do we know this at open time? */
559 cf->iscompressed = wtap_iscompressed(cf->wth);
561 /* Find the size of the file. */
562 size = wtap_file_size(cf->wth, NULL);
564 /* Update the progress bar when it gets to this value. */
565 progbar_nextstep = 0;
566 /* When we reach the value that triggers a progress bar update,
567 bump that value by this amount. */
569 progbar_quantum = size/N_PROGBAR_UPDATES;
570 if (progbar_quantum < MIN_QUANTUM)
571 progbar_quantum = MIN_QUANTUM;
574 /* Progress so far. */
577 /* The packet list window will be empty until the file is completly loaded */
578 packet_list_freeze();
581 g_get_current_time(&start_time);
583 while ((wtap_read(cf->wth, &err, &err_info, &data_offset))) {
586 file_pos = wtap_read_so_far(cf->wth);
588 /* Create the progress bar if necessary.
589 * Check whether it should be created or not every MIN_NUMBER_OF_PACKET
591 if ((progbar == NULL) && !(count % MIN_NUMBER_OF_PACKET)) {
592 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
594 progbar = delayed_create_progress_dlg(cf->window, "Reloading", name_ptr,
595 TRUE, &stop_flag, &start_time, progbar_val);
597 progbar = delayed_create_progress_dlg(cf->window, "Loading", name_ptr,
598 TRUE, &stop_flag, &start_time, progbar_val);
601 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
602 when we update it, we have to run the GTK+ main loop to get it
603 to repaint what's pending, and doing so may involve an "ioctl()"
604 to see if there's any pending input from an X server, and doing
605 that for every packet can be costly, especially on a big file. */
606 if (file_pos >= progbar_nextstep) {
607 if (progbar != NULL) {
608 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
609 /* update the packet bar content on the first run or frequently on very large files */
611 if (progbar_quantum > 500000 || displayed_once == 0) {
612 if ((auto_scroll_live || displayed_once == 0 || cf->displayed_count < 1000) && cf->count != 0) {
614 packets_bar_update();
617 #endif /* HAVE_LIBPCAP */
618 update_progress_dlg(progbar, progbar_val, status_str);
620 progbar_nextstep += progbar_quantum;
625 /* Well, the user decided to abort the read. He/She will be warned and
626 it might be enough for him/her to work with the already loaded
628 This is especially true for very large capture files, where you don't
629 want to wait loading the whole file (which may last minutes or even
630 hours even on fast machines) just to see that it was the wrong file. */
634 read_packet(cf, dfcode, &edt, cinfo, data_offset);
636 CATCH(OutOfMemoryError) {
637 simple_message_box(ESD_TYPE_ERROR, NULL,
638 "Some infos / workarounds can be found at:\n"
639 "http://wiki.wireshark.org/KnownBugs/OutOfMemory",
640 "Sorry, but Wireshark has run out of memory and has to terminate now!");
642 /* Could we close the current capture and free up memory from that? */
645 /* we have to terminate, as we cannot recover from the memory error */
651 epan_dissect_finish(&edt);
653 /* Free the display name */
656 /* Cleanup and release all dfilter resources */
657 if (dfcode != NULL) {
658 dfilter_free(dfcode);
661 /* We're done reading the file; destroy the progress bar if it was created. */
663 destroy_progress_dlg(progbar);
665 /* We're done reading sequentially through the file. */
666 cf->state = FILE_READ_DONE;
668 /* Close the sequential I/O side, to free up memory it requires. */
669 wtap_sequential_close(cf->wth);
671 /* Allow the protocol dissectors to free up memory that they
672 * don't need after the sequential run-through of the packets. */
673 postseq_cleanup_all_protocols();
675 /* compute the time it took to load the file */
676 compute_elapsed(&start_time);
678 /* Set the file encapsulation type now; we don't know what it is until
679 we've looked at all the packets, as we don't know until then whether
680 there's more than one type (and thus whether it's
681 WTAP_ENCAP_PER_PACKET). */
682 cf->lnk_t = wtap_file_encap(cf->wth);
684 cf->current_frame = frame_data_sequence_find(cf->frames, cf->first_displayed);
689 cf_callback_invoke(cf_cb_file_reload_finished, cf);
691 cf_callback_invoke(cf_cb_file_read_finished, cf);
693 /* If we have any displayed packets to select, select the first of those
694 packets by making the first row the selected row. */
695 if (cf->first_displayed != 0) {
696 packet_list_select_first_row();
700 simple_message_box(ESD_TYPE_WARN, NULL,
701 "The remaining packets in the file were discarded.\n"
703 "As a lot of packets from the original file will be missing,\n"
704 "remember to be careful when saving the current content to a file.\n",
705 "File loading was cancelled!");
706 return CF_READ_ERROR;
710 /* Put up a message box noting that the read failed somewhere along
711 the line. Don't throw out the stuff we managed to read, though,
715 case WTAP_ERR_UNSUPPORTED:
716 simple_error_message_box(
717 "The capture file contains record data that Wireshark doesn't support.\n(%s)",
722 case WTAP_ERR_UNSUPPORTED_ENCAP:
723 simple_error_message_box(
724 "The capture file has a packet with a network type that Wireshark doesn't support.\n(%s)",
729 case WTAP_ERR_CANT_READ:
730 simple_error_message_box(
731 "An attempt to read from the capture file failed for"
732 " some unknown reason.");
735 case WTAP_ERR_SHORT_READ:
736 simple_error_message_box(
737 "The capture file appears to have been cut short"
738 " in the middle of a packet.");
741 case WTAP_ERR_BAD_FILE:
742 simple_error_message_box(
743 "The capture file appears to be damaged or corrupt.\n(%s)",
748 case WTAP_ERR_DECOMPRESS:
749 simple_error_message_box(
750 "The compressed capture file appears to be damaged or corrupt.\n"
756 simple_error_message_box(
757 "An error occurred while reading the"
758 " capture file: %s.", wtap_strerror(err));
761 return CF_READ_ERROR;
768 cf_start_tail(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
770 cf_status_t cf_status;
772 cf_status = cf_open(cf, fname, is_tempfile, err);
777 cf_continue_tail(capture_file *cf, volatile int to_read, int *err)
779 gint64 data_offset = 0;
781 volatile int newly_displayed_packets = 0;
783 volatile column_info *cinfo;
785 gboolean create_proto_tree;
789 /* Compile the current display filter.
790 * We assume this will not fail since cf->dfilter is only set in
791 * cf_filter IFF the filter was valid.
793 compiled = dfilter_compile(cf->dfilter, &dfcode);
794 g_assert(!cf->dfilter || (compiled && dfcode));
796 /* Get the union of the flags for all tap listeners. */
797 tap_flags = union_of_tap_listener_flags();
798 cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
800 (dfcode != NULL || have_filtering_tap_listeners() || (tap_flags & TL_REQUIRES_PROTO_TREE));
801 epan_dissect_init(&edt, create_proto_tree, FALSE);
803 epan_dissect_prime_dfilter(&edt, dfcode);
807 packet_list_check_end();
808 /* Don't freeze/thaw the list when doing live capture */
809 /*packet_list_freeze();*/
811 /*g_log(NULL, G_LOG_LEVEL_MESSAGE, "cf_continue_tail: %u new: %u", cf->count, to_read);*/
813 while (to_read != 0) {
814 wtap_cleareof(cf->wth);
815 if (!wtap_read(cf->wth, err, &err_info, &data_offset)) {
818 if (cf->state == FILE_READ_ABORTED) {
819 /* Well, the user decided to exit Wireshark. Break out of the
820 loop, and let the code below (which is called even if there
821 aren't any packets left to read) exit. */
825 if (read_packet(cf, dfcode, &edt, cinfo,
826 data_offset) != -1) {
827 newly_displayed_packets++;
830 CATCH(OutOfMemoryError) {
831 simple_message_box(ESD_TYPE_ERROR, NULL,
832 "Some infos / workarounds can be found at:\n"
833 "http://wiki.wireshark.org/KnownBugs/OutOfMemory",
834 "Sorry, but Wireshark has run out of memory and has to terminate now!");
836 /* Could we close the current capture and free up memory from that? */
837 return CF_READ_ABORTED;
839 /* we have to terminate, as we cannot recover from the memory error */
846 epan_dissect_finish(&edt);
848 /* Update the file encapsulation; it might have changed based on the
849 packets we've read. */
850 cf->lnk_t = wtap_file_encap(cf->wth);
852 /* Cleanup and release all dfilter resources */
853 if (dfcode != NULL) {
854 dfilter_free(dfcode);
857 /*g_log(NULL, G_LOG_LEVEL_MESSAGE, "cf_continue_tail: count %u state: %u err: %u",
858 cf->count, cf->state, *err);*/
860 /* Don't freeze/thaw the list when doing live capture */
861 /*packet_list_thaw();*/
862 /* With the new packet list the first packet
863 * isn't automatically selected.
865 if (!cf->current_frame)
866 packet_list_select_first_row();
868 /* moving to the end of the packet list - if the user requested so and
869 we have some new packets. */
870 if (newly_displayed_packets && auto_scroll_live && cf->count != 0)
871 packet_list_moveto_end();
873 if (cf->state == FILE_READ_ABORTED) {
874 /* Well, the user decided to exit Wireshark. Return CF_READ_ABORTED
875 so that our caller can kill off the capture child process;
876 this will cause an EOF on the pipe from the child, so
877 "cf_finish_tail()" will be called, and it will clean up
879 return CF_READ_ABORTED;
880 } else if (*err != 0) {
881 /* We got an error reading the capture file.
882 XXX - pop up a dialog box instead? */
883 g_warning("Error \"%s\" while reading: \"%s\" (\"%s\")",
884 wtap_strerror(*err), err_info, cf->filename);
887 return CF_READ_ERROR;
893 cf_fake_continue_tail(capture_file *cf) {
894 cf->state = FILE_READ_DONE;
898 cf_finish_tail(capture_file *cf, int *err)
904 gboolean create_proto_tree;
909 /* Compile the current display filter.
910 * We assume this will not fail since cf->dfilter is only set in
911 * cf_filter IFF the filter was valid.
913 compiled = dfilter_compile(cf->dfilter, &dfcode);
914 g_assert(!cf->dfilter || (compiled && dfcode));
916 /* Get the union of the flags for all tap listeners. */
917 tap_flags = union_of_tap_listener_flags();
918 cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
920 (dfcode != NULL || have_filtering_tap_listeners() || (tap_flags & TL_REQUIRES_PROTO_TREE));
921 epan_dissect_init(&edt, create_proto_tree, FALSE);
923 epan_dissect_prime_dfilter(&edt, dfcode);
925 if (cf->wth == NULL) {
927 return CF_READ_ERROR;
930 packet_list_check_end();
931 /* Don't freeze/thaw the list when doing live capture */
932 /*packet_list_freeze();*/
934 while ((wtap_read(cf->wth, err, &err_info, &data_offset))) {
935 if (cf->state == FILE_READ_ABORTED) {
936 /* Well, the user decided to abort the read. Break out of the
937 loop, and let the code below (which is called even if there
938 aren't any packets left to read) exit. */
941 read_packet(cf, dfcode, &edt, cinfo, data_offset);
943 epan_dissect_finish(&edt);
945 /* Cleanup and release all dfilter resources */
946 if (dfcode != NULL) {
947 dfilter_free(dfcode);
950 /* Don't freeze/thaw the list when doing live capture */
951 /*packet_list_thaw();*/
953 if (cf->state == FILE_READ_ABORTED) {
954 /* Well, the user decided to abort the read. We're only called
955 when the child capture process closes the pipe to us (meaning
956 it's probably exited), so we can just close the capture
957 file; we return CF_READ_ABORTED so our caller can do whatever
958 is appropriate when that happens. */
960 return CF_READ_ABORTED;
963 if (auto_scroll_live && cf->count != 0)
964 packet_list_moveto_end();
966 /* We're done reading sequentially through the file. */
967 cf->state = FILE_READ_DONE;
969 /* We're done reading sequentially through the file; close the
970 sequential I/O side, to free up memory it requires. */
971 wtap_sequential_close(cf->wth);
973 /* Allow the protocol dissectors to free up memory that they
974 * don't need after the sequential run-through of the packets. */
975 postseq_cleanup_all_protocols();
977 /* Update the file encapsulation; it might have changed based on the
978 packets we've read. */
979 cf->lnk_t = wtap_file_encap(cf->wth);
981 /* Update the details in the file-set dialog, as the capture file
982 * has likely grown since we first stat-ed it */
983 fileset_update_file(cf->filename);
986 /* We got an error reading the capture file.
987 XXX - pop up a dialog box? */
989 g_warning("Error \"%s\" while reading: \"%s\" (\"%s\")",
990 wtap_strerror(*err), err_info, cf->filename);
992 return CF_READ_ERROR;
997 #endif /* HAVE_LIBPCAP */
1000 cf_get_display_name(capture_file *cf)
1004 /* Return a name to use in displays */
1005 if (!cf->is_tempfile) {
1006 /* Get the last component of the file name, and use that. */
1008 displayname = g_filename_display_basename(cf->filename);
1010 displayname=g_strdup("(No file)");
1013 /* The file we read is a temporary file from a live capture or
1014 a merge operation; we don't mention its name, but, if it's
1015 from a capture, give the source of the capture. */
1017 displayname = g_strdup(cf->source);
1019 displayname = g_strdup("(Untitled)");
1025 void cf_set_tempfile_source(capture_file *cf, gchar *source) {
1031 cf->source = g_strdup(source);
1033 cf->source = g_strdup("");
1037 const gchar *cf_get_tempfile_source(capture_file *cf) {
1045 /* XXX - use a macro instead? */
1047 cf_get_packet_count(capture_file *cf)
1052 /* XXX - use a macro instead? */
1054 cf_set_packet_count(capture_file *cf, int packet_count)
1056 cf->count = packet_count;
1059 /* XXX - use a macro instead? */
1061 cf_is_tempfile(capture_file *cf)
1063 return cf->is_tempfile;
1066 void cf_set_tempfile(capture_file *cf, gboolean is_tempfile)
1068 cf->is_tempfile = is_tempfile;
1072 /* XXX - use a macro instead? */
1073 void cf_set_drops_known(capture_file *cf, gboolean drops_known)
1075 cf->drops_known = drops_known;
1078 /* XXX - use a macro instead? */
1079 void cf_set_drops(capture_file *cf, guint32 drops)
1084 /* XXX - use a macro instead? */
1085 gboolean cf_get_drops_known(capture_file *cf)
1087 return cf->drops_known;
1090 /* XXX - use a macro instead? */
1091 guint32 cf_get_drops(capture_file *cf)
1096 void cf_set_rfcode(capture_file *cf, dfilter_t *rfcode)
1098 cf->rfcode = rfcode;
1102 find_and_mark_frame_depended_upon(gpointer data, gpointer user_data)
1104 frame_data *dependent_fd;
1105 guint32 dependent_frame = GPOINTER_TO_UINT(data);
1106 capture_file *cf = (capture_file *)user_data;
1108 dependent_fd = frame_data_sequence_find(cf->frames, dependent_frame);
1109 dependent_fd->flags.dependent_of_displayed = 1;
1113 add_packet_to_packet_list(frame_data *fdata, capture_file *cf,
1114 dfilter_t *dfcode, epan_dissect_t *edt, column_info *cinfo,
1115 struct wtap_pkthdr *phdr, const guchar *buf,
1116 gboolean add_to_packet_list)
1120 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
1121 &first_ts, prev_dis, prev_cap);
1124 epan_dissect_run_with_taps(edt, phdr, buf, fdata, cinfo);
1126 /* If we don't have a display filter, set "passed_dfilter" to 1. */
1127 if (dfcode != NULL) {
1128 fdata->flags.passed_dfilter = dfilter_apply_edt(dfcode, edt) ? 1 : 0;
1130 if (fdata->flags.passed_dfilter) {
1131 /* This frame passed the display filter but it may depend on other
1132 * (potentially not displayed) frames. Find those frames and mark them
1135 g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf);
1138 fdata->flags.passed_dfilter = 1;
1140 if (fdata->flags.passed_dfilter || fdata->flags.ref_time)
1141 cf->displayed_count++;
1143 if (add_to_packet_list) {
1144 /* We fill the needed columns from new_packet_list */
1145 row = packet_list_append(cinfo, fdata, &edt->pi);
1148 if (fdata->flags.passed_dfilter || fdata->flags.ref_time)
1150 frame_data_set_after_dissect(fdata, &cum_bytes);
1153 /* If we haven't yet seen the first frame, this is it.
1155 XXX - we must do this before we add the row to the display,
1156 as, if the display's GtkCList's selection mode is
1157 GTK_SELECTION_BROWSE, when the first entry is added to it,
1158 "cf_select_packet()" will be called, and it will fetch the row
1159 data for the 0th row, and will get a null pointer rather than
1160 "fdata", as "gtk_clist_append()" won't yet have returned and
1161 thus "gtk_clist_set_row_data()" won't yet have been called.
1163 We thus need to leave behind bread crumbs so that
1164 "cf_select_packet()" can find this frame. See the comment
1165 in "cf_select_packet()". */
1166 if (cf->first_displayed == 0)
1167 cf->first_displayed = fdata->num;
1169 /* This is the last frame we've seen so far. */
1170 cf->last_displayed = fdata->num;
1173 epan_dissect_reset(edt);
1177 /* read in a new packet */
1178 /* returns the row of the new packet in the packet list or -1 if not displayed */
1180 read_packet(capture_file *cf, dfilter_t *dfcode,
1181 epan_dissect_t *edt, column_info *cinfo, gint64 offset)
1183 struct wtap_pkthdr *phdr = wtap_phdr(cf->wth);
1184 const guchar *buf = wtap_buf_ptr(cf->wth);
1191 /* Add this packet's link-layer encapsulation type to cf->linktypes, if
1192 it's not already there.
1193 XXX - yes, this is O(N), so if every packet had a different
1194 link-layer encapsulation type, it'd be O(N^2) to read the file, but
1195 there are probably going to be a small number of encapsulation types
1197 cf_add_encapsulation_type(cf, phdr->pkt_encap);
1199 /* The frame number of this packet is one more than the count of
1200 frames in the file so far. */
1201 framenum = cf->count + 1;
1203 frame_data_init(&fdlocal, framenum, phdr, offset, cum_bytes);
1208 epan_dissect_init(&edt, TRUE, FALSE);
1209 epan_dissect_prime_dfilter(&edt, cf->rfcode);
1210 epan_dissect_run(&edt, phdr, buf, &fdlocal, NULL);
1211 passed = dfilter_apply_edt(cf->rfcode, &edt);
1212 epan_dissect_cleanup(&edt);
1216 /* This does a shallow copy of fdlocal, which is good enough. */
1217 fdata = frame_data_sequence_add(cf->frames, &fdlocal);
1220 if (fdlocal.opt_comment != NULL)
1221 cf->packet_comment_count++;
1222 cf->f_datalen = offset + fdlocal.cap_len;
1224 if (!cf->redissecting) {
1225 row = add_packet_to_packet_list(fdata, cf, dfcode,
1235 cf_merge_files(char **out_filenamep, int in_file_count,
1236 char *const *in_filenames, int file_type, gboolean do_append)
1238 merge_in_file_t *in_files, *in_file;
1243 int open_err, read_err, write_err, close_err;
1247 gboolean got_read_error = FALSE, got_write_error = FALSE;
1249 progdlg_t *progbar = NULL;
1251 gint64 f_len, file_pos;
1253 GTimeVal start_time;
1254 gchar status_str[100];
1255 gint64 progbar_nextstep;
1256 gint64 progbar_quantum;
1257 gchar *display_basename;
1258 int selected_frame_type;
1259 gboolean fake_interface_ids = FALSE;
1261 /* open the input files */
1262 if (!merge_open_in_files(in_file_count, in_filenames, &in_files,
1263 &open_err, &err_info, &err_fileno)) {
1265 cf_open_failure_alert_box(in_filenames[err_fileno], open_err, err_info,
1270 if (*out_filenamep != NULL) {
1271 out_filename = *out_filenamep;
1272 out_fd = ws_open(out_filename, O_CREAT|O_TRUNC|O_BINARY, 0600);
1276 out_fd = create_tempfile(&tmpname, "wireshark");
1279 out_filename = g_strdup(tmpname);
1280 *out_filenamep = out_filename;
1284 merge_close_in_files(in_file_count, in_files);
1286 cf_open_failure_alert_box(out_filename, open_err, NULL, TRUE, file_type);
1290 selected_frame_type = merge_select_frame_type(in_file_count, in_files);
1292 /* If we are trying to merge a number of libpcap files with different encapsulation types
1293 * change the output file type to pcapng and create SHB and IDB:s for the new file use the
1294 * interface index stored in in_files per file to change the phdr before writing the datablock.
1295 * XXX should it be an option to convert to pcapng?
1297 * We need something similar when merging pcapng files possibly with an option to say
1298 * the same interface(s) used in all in files. SHBs comments should be merged together.
1300 if ((selected_frame_type == WTAP_ENCAP_PER_PACKET)&&(file_type == WTAP_FILE_PCAP)) {
1301 /* Write output in pcapng format */
1302 wtapng_section_t *shb_hdr;
1303 wtapng_iface_descriptions_t *idb_inf, *idb_inf_merge_file;
1304 wtapng_if_descr_t int_data, *file_int_data;
1305 GString *comment_gstr;
1308 fake_interface_ids = TRUE;
1309 /* Create SHB info */
1310 shb_hdr = wtap_file_get_shb_info(in_files[0].wth);
1311 comment_gstr = g_string_new("");
1312 g_string_append_printf(comment_gstr, "%s \n",shb_hdr->opt_comment);
1313 g_string_append_printf(comment_gstr, "File created by merging: \n");
1314 file_type = WTAP_FILE_PCAPNG;
1316 for (i = 0; i < in_file_count; i++) {
1317 g_string_append_printf(comment_gstr, "File%d: %s \n",i+1,in_files[i].filename);
1319 shb_hdr->section_length = -1;
1321 shb_hdr->opt_comment = g_string_free(comment_gstr, FALSE); /* NULL if not available */
1322 shb_hdr->shb_hardware = NULL; /* NULL if not available, UTF-8 string containing the */
1323 /* description of the hardware used to create this section. */
1324 shb_hdr->shb_os = NULL; /* NULL if not available, UTF-8 string containing the name */
1325 /* of the operating system used to create this section. */
1326 shb_hdr->shb_user_appl = "Wireshark"; /* NULL if not available, UTF-8 string containing the name */
1327 /* of the application used to create this section. */
1329 /* create fake IDB info */
1330 idb_inf = g_new(wtapng_iface_descriptions_t,1);
1331 idb_inf->number_of_interfaces = in_file_count; /* TODO make this the number of DIFFERENT encapsulation types
1332 * check that snaplength is the same too?
1334 idb_inf->interface_data = g_array_new(FALSE, FALSE, sizeof(wtapng_if_descr_t));
1336 for (i = 0; i < in_file_count; i++) {
1337 idb_inf_merge_file = wtap_file_get_idb_info(in_files[i].wth);
1338 /* read the interface data from the in file to our combined interfca data */
1339 file_int_data = &g_array_index (idb_inf_merge_file->interface_data, wtapng_if_descr_t, 0);
1340 int_data.wtap_encap = file_int_data->wtap_encap;
1341 int_data.time_units_per_second = file_int_data->time_units_per_second;
1342 int_data.link_type = file_int_data->link_type;
1343 int_data.snap_len = file_int_data->snap_len;
1344 int_data.if_name = g_strdup(file_int_data->if_name);
1345 int_data.opt_comment = NULL;
1346 int_data.if_description = NULL;
1347 int_data.if_speed = 0;
1348 int_data.if_tsresol = 6;
1349 int_data.if_filter_str = NULL;
1350 int_data.bpf_filter_len = 0;
1351 int_data.if_filter_bpf_bytes = NULL;
1352 int_data.if_os = NULL;
1353 int_data.if_fcslen = -1;
1354 int_data.num_stat_entries = 0; /* Number of ISB:s */
1355 int_data.interface_statistics = NULL;
1357 g_array_append_val(idb_inf->interface_data, int_data);
1358 g_free(idb_inf_merge_file);
1360 /* Set fake interface Id in per file data */
1361 in_files[i].interface_id = i;
1364 pdh = wtap_dump_fdopen_ng(out_fd, file_type,
1365 selected_frame_type,
1366 merge_max_snapshot_length(in_file_count, in_files),
1367 FALSE /* compressed */, shb_hdr, idb_inf /* wtapng_iface_descriptions_t *idb_inf */, &open_err);
1371 merge_close_in_files(in_file_count, in_files);
1373 cf_open_failure_alert_box(out_filename, open_err, err_info, TRUE,
1380 pdh = wtap_dump_fdopen(out_fd, file_type,
1381 selected_frame_type,
1382 merge_max_snapshot_length(in_file_count, in_files),
1383 FALSE /* compressed */, &open_err);
1386 merge_close_in_files(in_file_count, in_files);
1388 cf_open_failure_alert_box(out_filename, open_err, err_info, TRUE,
1394 /* Get the sum of the sizes of all the files. */
1396 for (i = 0; i < in_file_count; i++)
1397 f_len += in_files[i].size;
1399 /* Update the progress bar when it gets to this value. */
1400 progbar_nextstep = 0;
1401 /* When we reach the value that triggers a progress bar update,
1402 bump that value by this amount. */
1403 progbar_quantum = f_len/N_PROGBAR_UPDATES;
1404 /* Progress so far. */
1408 g_get_current_time(&start_time);
1410 /* do the merge (or append) */
1413 in_file = merge_append_read_packet(in_file_count, in_files, &read_err,
1416 in_file = merge_read_packet(in_file_count, in_files, &read_err,
1418 if (in_file == NULL) {
1423 if (read_err != 0) {
1424 /* I/O error reading from in_file */
1425 got_read_error = TRUE;
1429 /* Get the sum of the data offsets in all of the files. */
1431 for (i = 0; i < in_file_count; i++)
1432 data_offset += in_files[i].data_offset;
1434 /* Create the progress bar if necessary.
1435 We check on every iteration of the loop, so that it takes no
1436 longer than the standard time to create it (otherwise, for a
1437 large file, we might take considerably longer than that standard
1438 time in order to get to the next progress bar step). */
1439 if (progbar == NULL) {
1440 progbar = delayed_create_progress_dlg(NULL, "Merging", "files",
1441 FALSE, &stop_flag, &start_time, progbar_val);
1444 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
1445 when we update it, we have to run the GTK+ main loop to get it
1446 to repaint what's pending, and doing so may involve an "ioctl()"
1447 to see if there's any pending input from an X server, and doing
1448 that for every packet can be costly, especially on a big file. */
1449 if (data_offset >= progbar_nextstep) {
1450 /* Get the sum of the seek positions in all of the files. */
1452 for (i = 0; i < in_file_count; i++)
1453 file_pos += wtap_read_so_far(in_files[i].wth);
1454 progbar_val = (gfloat) file_pos / (gfloat) f_len;
1455 if (progbar_val > 1.0f) {
1456 /* Some file probably grew while we were reading it.
1457 That "shouldn't happen", so we'll just clip the progress
1461 if (progbar != NULL) {
1462 g_snprintf(status_str, sizeof(status_str),
1463 "%" G_GINT64_MODIFIER "dKB of %" G_GINT64_MODIFIER "dKB",
1464 file_pos / 1024, f_len / 1024);
1465 update_progress_dlg(progbar, progbar_val, status_str);
1467 progbar_nextstep += progbar_quantum;
1471 /* Well, the user decided to abort the merge. */
1475 /* If we have WTAP_ENCAP_PER_PACKETend the infiles are of type WTAP_FILE_PCAP
1476 * we need to set the interface id in the paket header = the interface index we used
1477 * in the IDBs interface description for this file(encapsulation type).
1479 if (fake_interface_ids) {
1480 struct wtap_pkthdr *phdr;
1482 phdr = wtap_phdr(in_file->wth);
1483 phdr->interface_id = in_file->interface_id;
1484 phdr->presence_flags = phdr->presence_flags | WTAP_HAS_INTERFACE_ID;
1486 if (!wtap_dump(pdh, wtap_phdr(in_file->wth),
1487 wtap_buf_ptr(in_file->wth), &write_err)) {
1488 got_write_error = TRUE;
1493 /* We're done merging the files; destroy the progress bar if it was created. */
1494 if (progbar != NULL)
1495 destroy_progress_dlg(progbar);
1497 merge_close_in_files(in_file_count, in_files);
1498 if (!got_read_error && !got_write_error) {
1499 if (!wtap_dump_close(pdh, &write_err))
1500 got_write_error = TRUE;
1502 wtap_dump_close(pdh, &close_err);
1504 if (got_read_error) {
1506 * Find the file on which we got the error, and report the error.
1508 for (i = 0; i < in_file_count; i++) {
1509 if (in_files[i].state == GOT_ERROR) {
1510 /* Put up a message box noting that a read failed somewhere along
1512 display_basename = g_filename_display_basename(in_files[i].filename);
1515 case WTAP_ERR_UNSUPPORTED_ENCAP:
1516 simple_error_message_box(
1517 "The capture file %s has a packet with a network type that Wireshark doesn't support.\n(%s)",
1518 display_basename, err_info);
1522 case WTAP_ERR_CANT_READ:
1523 simple_error_message_box(
1524 "An attempt to read from the capture file %s failed for"
1525 " some unknown reason.", display_basename);
1528 case WTAP_ERR_SHORT_READ:
1529 simple_error_message_box(
1530 "The capture file %s appears to have been cut short"
1531 " in the middle of a packet.", display_basename);
1534 case WTAP_ERR_BAD_FILE:
1535 simple_error_message_box(
1536 "The capture file %s appears to be damaged or corrupt.\n(%s)",
1537 display_basename, err_info);
1541 case WTAP_ERR_DECOMPRESS:
1542 simple_error_message_box(
1543 "The compressed capture file %s appears to be damaged or corrupt.\n"
1544 "(%s)", display_basename, err_info);
1549 simple_error_message_box(
1550 "An error occurred while reading the"
1551 " capture file %s: %s.",
1552 display_basename, wtap_strerror(read_err));
1555 g_free(display_basename);
1560 if (got_write_error) {
1561 /* Put up an alert box for the write error. */
1562 if (write_err < 0) {
1563 /* Wiretap error. */
1564 switch (write_err) {
1566 case WTAP_ERR_UNSUPPORTED_ENCAP:
1568 * This is a problem with the particular frame we're writing;
1569 * note that, and give the frame number.
1571 display_basename = g_filename_display_basename(in_file->filename);
1572 simple_error_message_box(
1573 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.",
1574 in_file->packet_num, display_basename,
1575 wtap_file_type_string(file_type));
1576 g_free(display_basename);
1580 display_basename = g_filename_display_basename(out_filename);
1581 simple_error_message_box(
1582 "An error occurred while writing to the file \"%s\": %s.",
1583 out_filename, wtap_strerror(write_err));
1584 g_free(display_basename);
1589 write_failure_alert_box(out_filename, write_err);
1593 if (got_read_error || got_write_error || stop_flag) {
1594 /* Callers aren't expected to treat an error or an explicit abort
1595 differently - we put up error dialogs ourselves, so they don't
1603 cf_filter_packets(capture_file *cf, gchar *dftext, gboolean force)
1605 const char *filter_new = dftext ? dftext : "";
1606 const char *filter_old = cf->dfilter ? cf->dfilter : "";
1608 GTimeVal start_time;
1610 /* if new filter equals old one, do nothing unless told to do so */
1611 if (!force && strcmp(filter_new, filter_old) == 0) {
1617 if (dftext == NULL) {
1618 /* The new filter is an empty filter (i.e., display all packets).
1619 * so leave dfcode==NULL
1623 * We have a filter; make a copy of it (as we'll be saving it),
1624 * and try to compile it.
1626 dftext = g_strdup(dftext);
1627 if (!dfilter_compile(dftext, &dfcode)) {
1628 /* The attempt failed; report an error. */
1629 simple_message_box(ESD_TYPE_ERROR, NULL,
1630 "See the help for a description of the display filter syntax.",
1631 "\"%s\" isn't a valid display filter: %s",
1632 dftext, dfilter_error_msg);
1638 if (dfcode == NULL) {
1639 /* Yes - free the filter text, and set it to null. */
1645 /* We have a valid filter. Replace the current filter. */
1646 g_free(cf->dfilter);
1647 cf->dfilter = dftext;
1648 g_get_current_time(&start_time);
1651 /* Now rescan the packet list, applying the new filter, but not
1652 throwing away information constructed on a previous pass. */
1653 if (dftext == NULL) {
1654 rescan_packets(cf, "Resetting", "Filter", FALSE);
1656 rescan_packets(cf, "Filtering", dftext, FALSE);
1659 /* Cleanup and release all dfilter resources */
1660 dfilter_free(dfcode);
1666 cf_reftime_packets(capture_file *cf)
1668 ref_time_packets(cf);
1672 cf_redissect_packets(capture_file *cf)
1674 rescan_packets(cf, "Reprocessing", "all packets", TRUE);
1678 cf_read_frame_r(capture_file *cf, frame_data *fdata,
1679 struct wtap_pkthdr *phdr, guint8 *pd)
1683 gchar *display_basename;
1685 #ifdef WANT_PACKET_EDITOR
1686 /* if fdata->file_off == -1 it means packet was edited, and we must find data inside edited_frames tree */
1687 if (G_UNLIKELY(fdata->file_off == -1)) {
1688 const modified_frame_data *frame = (const modified_frame_data *) g_tree_lookup(cf->edited_frames, GINT_TO_POINTER(fdata->num));
1691 simple_error_message_box("fdata->file_off == -1, but can't find modified frame!");
1695 *phdr = frame->phdr;
1696 memcpy(pd, frame->pd, fdata->cap_len);
1701 if (!wtap_seek_read(cf->wth, fdata->file_off, phdr, pd,
1702 fdata->cap_len, &err, &err_info)) {
1703 display_basename = g_filename_display_basename(cf->filename);
1706 case WTAP_ERR_UNSUPPORTED_ENCAP:
1707 simple_error_message_box("The file \"%s\" has a packet with a network type that Wireshark doesn't support.\n(%s)",
1708 display_basename, err_info);
1712 case WTAP_ERR_BAD_FILE:
1713 simple_error_message_box("An error occurred while reading from the file \"%s\": %s.\n(%s)",
1714 display_basename, wtap_strerror(err), err_info);
1719 simple_error_message_box(
1720 "An error occurred while reading from the file \"%s\": %s.",
1721 display_basename, wtap_strerror(err));
1724 g_free(display_basename);
1731 cf_read_frame(capture_file *cf, frame_data *fdata)
1733 return cf_read_frame_r(cf, fdata, &cf->phdr, cf->pd);
1736 /* Rescan the list of packets, reconstructing the CList.
1738 "action" describes why we're doing this; it's used in the progress
1741 "action_item" describes what we're doing; it's used in the progress
1744 "redissect" is TRUE if we need to make the dissectors reconstruct
1745 any state information they have (because a preference that affects
1746 some dissector has changed, meaning some dissector might construct
1747 its state differently from the way it was constructed the last time). */
1749 rescan_packets(capture_file *cf, const char *action, const char *action_item, gboolean redissect)
1751 /* Rescan packets new packet list */
1754 progdlg_t *progbar = NULL;
1757 frame_data *selected_frame, *preceding_frame, *following_frame, *prev_frame;
1758 int selected_frame_num, preceding_frame_num, following_frame_num, prev_frame_num;
1759 gboolean selected_frame_seen;
1761 GTimeVal start_time;
1762 gchar status_str[100];
1763 int progbar_nextstep;
1764 int progbar_quantum;
1768 gboolean create_proto_tree;
1770 gboolean add_to_packet_list = FALSE;
1772 guint32 frames_count;
1774 /* Compile the current display filter.
1775 * We assume this will not fail since cf->dfilter is only set in
1776 * cf_filter IFF the filter was valid.
1778 compiled = dfilter_compile(cf->dfilter, &dfcode);
1779 g_assert(!cf->dfilter || (compiled && dfcode));
1781 /* Get the union of the flags for all tap listeners. */
1782 tap_flags = union_of_tap_listener_flags();
1783 cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
1785 (dfcode != NULL || have_filtering_tap_listeners() || (tap_flags & TL_REQUIRES_PROTO_TREE));
1786 epan_dissect_init(&edt, create_proto_tree, FALSE);
1788 epan_dissect_prime_dfilter(&edt, dfcode);
1790 reset_tap_listeners();
1791 /* Which frame, if any, is the currently selected frame?
1792 XXX - should the selected frame or the focus frame be the "current"
1793 frame, that frame being the one from which "Find Frame" searches
1795 selected_frame = cf->current_frame;
1797 /* Mark frame num as not found */
1798 selected_frame_num = -1;
1800 /* Freeze the packet list while we redo it, so we don't get any
1801 screen updates while it happens. */
1802 packet_list_freeze();
1805 /* We need to re-initialize all the state information that protocols
1806 keep, because some preference that controls a dissector has changed,
1807 which might cause the state information to be constructed differently
1808 by that dissector. */
1810 /* We might receive new packets while redissecting, and we don't
1811 want to dissect those before their time. */
1812 cf->redissecting = TRUE;
1814 /* Cleanup all data structures used for dissection. */
1815 cleanup_dissection();
1816 /* Initialize all data structures used for dissection. */
1819 /* We need to redissect the packets so we have to discard our old
1820 * packet list store. */
1821 packet_list_clear();
1822 add_to_packet_list = TRUE;
1825 /* We don't yet know which will be the first and last frames displayed. */
1826 cf->first_displayed = 0;
1827 cf->last_displayed = 0;
1829 /* We currently don't display any packets */
1830 cf->displayed_count = 0;
1832 /* Iterate through the list of frames. Call a routine for each frame
1833 to check whether it should be displayed and, if so, add it to
1834 the display list. */
1835 nstime_set_unset(&first_ts);
1840 /* Update the progress bar when it gets to this value. */
1841 progbar_nextstep = 0;
1842 /* When we reach the value that triggers a progress bar update,
1843 bump that value by this amount. */
1844 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
1845 /* Count of packets at which we've looked. */
1847 /* Progress so far. */
1851 g_get_current_time(&start_time);
1853 /* no previous row yet */
1854 prev_frame_num = -1;
1857 preceding_frame_num = -1;
1858 preceding_frame = NULL;
1859 following_frame_num = -1;
1860 following_frame = NULL;
1862 selected_frame_seen = FALSE;
1864 frames_count = cf->count;
1865 for (framenum = 1; framenum <= frames_count; framenum++) {
1866 fdata = frame_data_sequence_find(cf->frames, framenum);
1868 /* Create the progress bar if necessary.
1869 We check on every iteration of the loop, so that it takes no
1870 longer than the standard time to create it (otherwise, for a
1871 large file, we might take considerably longer than that standard
1872 time in order to get to the next progress bar step). */
1873 if (progbar == NULL)
1874 progbar = delayed_create_progress_dlg(cf->window, action, action_item, TRUE,
1875 &stop_flag, &start_time,
1878 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
1879 when we update it, we have to run the GTK+ main loop to get it
1880 to repaint what's pending, and doing so may involve an "ioctl()"
1881 to see if there's any pending input from an X server, and doing
1882 that for every packet can be costly, especially on a big file. */
1883 if (count >= progbar_nextstep) {
1884 /* let's not divide by zero. I should never be started
1885 * with count == 0, so let's assert that
1887 g_assert(cf->count > 0);
1888 progbar_val = (gfloat) count / frames_count;
1890 if (progbar != NULL) {
1891 g_snprintf(status_str, sizeof(status_str),
1892 "%4u of %u frames", count, frames_count);
1893 update_progress_dlg(progbar, progbar_val, status_str);
1896 progbar_nextstep += progbar_quantum;
1900 /* Well, the user decided to abort the filtering. Just stop.
1902 XXX - go back to the previous filter? Users probably just
1903 want not to wait for a filtering operation to finish;
1904 unless we cancel by having no filter, reverting to the
1905 previous filter will probably be even more expensive than
1906 continuing the filtering, as it involves going back to the
1907 beginning and filtering, and even with no filter we currently
1908 have to re-generate the entire clist, which is also expensive.
1910 I'm not sure what Network Monitor does, but it doesn't appear
1911 to give you an unfiltered display if you cancel. */
1918 /* Since all state for the frame was destroyed, mark the frame
1919 * as not visited, free the GSList referring to the state
1920 * data (the per-frame data itself was freed by
1921 * "init_dissection()"), and null out the GSList pointer. */
1922 fdata->flags.visited = 0;
1923 frame_data_cleanup(fdata);
1924 frames_count = cf->count;
1927 /* Frame dependencies from the previous dissection/filtering are no longer valid. */
1928 fdata->flags.dependent_of_displayed = 0;
1930 if (!cf_read_frame(cf, fdata))
1931 break; /* error reading the frame */
1933 /* If the previous frame is displayed, and we haven't yet seen the
1934 selected frame, remember that frame - it's the closest one we've
1935 yet seen before the selected frame. */
1936 if (prev_frame_num != -1 && !selected_frame_seen && prev_frame->flags.passed_dfilter) {
1937 preceding_frame_num = prev_frame_num;
1938 preceding_frame = prev_frame;
1940 add_packet_to_packet_list(fdata, cf, dfcode, &edt,
1941 cinfo, &cf->phdr, cf->pd,
1942 add_to_packet_list);
1944 /* If this frame is displayed, and this is the first frame we've
1945 seen displayed after the selected frame, remember this frame -
1946 it's the closest one we've yet seen at or after the selected
1948 if (fdata->flags.passed_dfilter && selected_frame_seen && following_frame_num == -1) {
1949 following_frame_num = fdata->num;
1950 following_frame = fdata;
1952 if (fdata == selected_frame) {
1953 selected_frame_seen = TRUE;
1954 if (fdata->flags.passed_dfilter)
1955 selected_frame_num = fdata->num;
1958 /* Remember this frame - it'll be the previous frame
1959 on the next pass through the loop. */
1960 prev_frame_num = fdata->num;
1963 epan_dissect_finish(&edt);
1965 /* We are done redissecting the packet list. */
1966 cf->redissecting = FALSE;
1969 frames_count = cf->count;
1970 /* Clear out what remains of the visited flags and per-frame data
1973 XXX - that may cause various forms of bogosity when dissecting
1974 these frames, as they won't have been seen by this sequential
1975 pass, but the only alternative I see is to keep scanning them
1976 even though the user requested that the scan stop, and that
1977 would leave the user stuck with an Wireshark grinding on
1978 until it finishes. Should we just stick them with that? */
1979 for (; framenum <= frames_count; framenum++) {
1980 fdata = frame_data_sequence_find(cf->frames, framenum);
1981 fdata->flags.visited = 0;
1982 frame_data_cleanup(fdata);
1986 /* We're done filtering the packets; destroy the progress bar if it
1988 if (progbar != NULL)
1989 destroy_progress_dlg(progbar);
1991 /* Unfreeze the packet list. */
1992 if (!add_to_packet_list)
1993 packet_list_recreate_visible_rows();
1995 /* Compute the time it took to filter the file */
1996 compute_elapsed(&start_time);
2000 if (selected_frame_num == -1) {
2001 /* The selected frame didn't pass the filter. */
2002 if (selected_frame == NULL) {
2003 /* That's because there *was* no selected frame. Make the first
2004 displayed frame the current frame. */
2005 selected_frame_num = 0;
2007 /* Find the nearest displayed frame to the selected frame (whether
2008 it's before or after that frame) and make that the current frame.
2009 If the next and previous displayed frames are equidistant from the
2010 selected frame, choose the next one. */
2011 g_assert(following_frame == NULL ||
2012 following_frame->num >= selected_frame->num);
2013 g_assert(preceding_frame == NULL ||
2014 preceding_frame->num <= selected_frame->num);
2015 if (following_frame == NULL) {
2016 /* No frame after the selected frame passed the filter, so we
2017 have to select the last displayed frame before the selected
2019 selected_frame_num = preceding_frame_num;
2020 selected_frame = preceding_frame;
2021 } else if (preceding_frame == NULL) {
2022 /* No frame before the selected frame passed the filter, so we
2023 have to select the first displayed frame after the selected
2025 selected_frame_num = following_frame_num;
2026 selected_frame = following_frame;
2028 /* Frames before and after the selected frame passed the filter, so
2029 we'll select the previous frame */
2030 selected_frame_num = preceding_frame_num;
2031 selected_frame = preceding_frame;
2036 if (selected_frame_num == -1) {
2037 /* There are no frames displayed at all. */
2038 cf_unselect_packet(cf);
2040 /* Either the frame that was selected passed the filter, or we've
2041 found the nearest displayed frame to that frame. Select it, make
2042 it the focus row, and make it visible. */
2043 /* Set to invalid to force update of packet list and packet details */
2044 cf->current_row = -1;
2045 if (selected_frame_num == 0) {
2046 packet_list_select_first_row();
2048 if (!packet_list_select_row_from_data(selected_frame)) {
2049 /* We didn't find a row corresponding to this frame.
2050 This means that the frame isn't being displayed currently,
2051 so we can't select it. */
2052 simple_message_box(ESD_TYPE_INFO, NULL,
2053 "The capture file is probably not fully dissected.",
2054 "End of capture exceeded!");
2059 /* Cleanup and release all dfilter resources */
2060 dfilter_free(dfcode);
2065 * Scan trough all frame data and recalculate the ref time
2066 * without rereading the file.
2067 * XXX - do we need a progres bar or is this fast enough?
2070 ref_time_packets(capture_file *cf)
2075 nstime_set_unset(&first_ts);
2079 for (framenum = 1; framenum <= cf->count; framenum++) {
2080 fdata = frame_data_sequence_find(cf->frames, framenum);
2082 /* just add some value here until we know if it is being displayed or not */
2083 fdata->cum_bytes = cum_bytes + fdata->pkt_len;
2089 /* If we don't have the time stamp of the first packet in the
2090 capture, it's because this is the first packet. Save the time
2091 stamp of this packet as the time stamp of the first packet. */
2092 if (nstime_is_unset(&first_ts)) {
2093 first_ts = fdata->abs_ts;
2095 /* if this frames is marked as a reference time frame, reset
2096 firstsec and firstusec to this frame */
2097 if (fdata->flags.ref_time) {
2098 first_ts = fdata->abs_ts;
2101 /* If we don't have the time stamp of the previous displayed packet,
2102 it's because this is the first displayed packet. Save the time
2103 stamp of this packet as the time stamp of the previous displayed
2105 if (prev_dis == NULL) {
2109 /* Get the time elapsed between the first packet and this packet. */
2110 nstime_delta(&fdata->rel_ts, &fdata->abs_ts, &first_ts);
2112 /* If it's greater than the current elapsed time, set the elapsed time
2113 to it (we check for "greater than" so as not to be confused by
2114 time moving backwards). */
2115 if ((gint32)cf->elapsed_time.secs < fdata->rel_ts.secs
2116 || ((gint32)cf->elapsed_time.secs == fdata->rel_ts.secs && (gint32)cf->elapsed_time.nsecs < fdata->rel_ts.nsecs)) {
2117 cf->elapsed_time = fdata->rel_ts;
2120 /* If this frame is displayed, get the time elapsed between the
2121 previous displayed packet and this packet. */
2122 if ( fdata->flags.passed_dfilter ) {
2123 fdata->prev_dis = prev_dis;
2130 if ( (fdata->flags.passed_dfilter) || (fdata->flags.ref_time) ) {
2131 /* This frame either passed the display filter list or is marked as
2132 a time reference frame. All time reference frames are displayed
2133 even if they dont pass the display filter */
2134 if (fdata->flags.ref_time) {
2135 /* if this was a TIME REF frame we should reset the cum_bytes field */
2136 cum_bytes = fdata->pkt_len;
2137 fdata->cum_bytes = cum_bytes;
2139 /* increase cum_bytes with this packets length */
2140 cum_bytes += fdata->pkt_len;
2153 process_specified_packets(capture_file *cf, packet_range_t *range,
2154 const char *string1, const char *string2, gboolean terminate_is_stop,
2155 gboolean (*callback)(capture_file *, frame_data *,
2156 struct wtap_pkthdr *, const guint8 *, void *),
2157 void *callback_args)
2161 guint8 pd[WTAP_MAX_PACKET_SIZE+1];
2162 psp_return_t ret = PSP_FINISHED;
2164 progdlg_t *progbar = NULL;
2167 gboolean progbar_stop_flag;
2168 GTimeVal progbar_start_time;
2169 gchar progbar_status_str[100];
2170 int progbar_nextstep;
2171 int progbar_quantum;
2172 range_process_e process_this;
2173 struct wtap_pkthdr phdr;
2175 /* Update the progress bar when it gets to this value. */
2176 progbar_nextstep = 0;
2177 /* When we reach the value that triggers a progress bar update,
2178 bump that value by this amount. */
2179 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
2180 /* Count of packets at which we've looked. */
2182 /* Progress so far. */
2185 progbar_stop_flag = FALSE;
2186 g_get_current_time(&progbar_start_time);
2189 packet_range_process_init(range);
2191 /* Iterate through all the packets, printing the packets that
2192 were selected by the current display filter. */
2193 for (framenum = 1; framenum <= cf->count; framenum++) {
2194 fdata = frame_data_sequence_find(cf->frames, framenum);
2196 /* Create the progress bar if necessary.
2197 We check on every iteration of the loop, so that it takes no
2198 longer than the standard time to create it (otherwise, for a
2199 large file, we might take considerably longer than that standard
2200 time in order to get to the next progress bar step). */
2201 if (progbar == NULL)
2202 progbar = delayed_create_progress_dlg(cf->window, string1, string2,
2205 &progbar_start_time,
2208 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
2209 when we update it, we have to run the GTK+ main loop to get it
2210 to repaint what's pending, and doing so may involve an "ioctl()"
2211 to see if there's any pending input from an X server, and doing
2212 that for every packet can be costly, especially on a big file. */
2213 if (progbar_count >= progbar_nextstep) {
2214 /* let's not divide by zero. I should never be started
2215 * with count == 0, so let's assert that
2217 g_assert(cf->count > 0);
2218 progbar_val = (gfloat) progbar_count / cf->count;
2220 if (progbar != NULL) {
2221 g_snprintf(progbar_status_str, sizeof(progbar_status_str),
2222 "%4u of %u packets", progbar_count, cf->count);
2223 update_progress_dlg(progbar, progbar_val, progbar_status_str);
2226 progbar_nextstep += progbar_quantum;
2229 if (progbar_stop_flag) {
2230 /* Well, the user decided to abort the operation. Just stop,
2231 and arrange to return PSP_STOPPED to our caller, so they know
2232 it was stopped explicitly. */
2239 if (range != NULL) {
2240 /* do we have to process this packet? */
2241 process_this = packet_range_process_packet(range, fdata);
2242 if (process_this == range_process_next) {
2243 /* this packet uninteresting, continue with next one */
2245 } else if (process_this == range_processing_finished) {
2246 /* all interesting packets processed, stop the loop */
2251 /* Get the packet */
2252 if (!cf_read_frame_r(cf, fdata, &phdr, pd)) {
2253 /* Attempt to get the packet failed. */
2257 /* Process the packet */
2258 if (!callback(cf, fdata, &phdr, pd, callback_args)) {
2259 /* Callback failed. We assume it reported the error appropriately. */
2265 /* We're done printing the packets; destroy the progress bar if
2267 if (progbar != NULL)
2268 destroy_progress_dlg(progbar);
2274 gboolean construct_protocol_tree;
2276 } retap_callback_args_t;
2279 retap_packet(capture_file *cf _U_, frame_data *fdata,
2280 struct wtap_pkthdr *phdr, const guint8 *pd,
2283 retap_callback_args_t *args = argsp;
2286 epan_dissect_init(&edt, args->construct_protocol_tree, FALSE);
2287 epan_dissect_run_with_taps(&edt, phdr, pd, fdata, args->cinfo);
2288 epan_dissect_cleanup(&edt);
2294 cf_retap_packets(capture_file *cf)
2296 packet_range_t range;
2297 retap_callback_args_t callback_args;
2298 gboolean filtering_tap_listeners;
2301 /* Do we have any tap listeners with filters? */
2302 filtering_tap_listeners = have_filtering_tap_listeners();
2304 tap_flags = union_of_tap_listener_flags();
2306 /* If any tap listeners have filters, or require the protocol tree,
2307 construct the protocol tree. */
2308 callback_args.construct_protocol_tree = filtering_tap_listeners ||
2309 (tap_flags & TL_REQUIRES_PROTO_TREE);
2311 /* If any tap listeners require the columns, construct them. */
2312 callback_args.cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
2314 /* Reset the tap listeners. */
2315 reset_tap_listeners();
2317 /* Iterate through the list of packets, dissecting all packets and
2318 re-running the taps. */
2319 packet_range_init(&range, cf);
2320 packet_range_process_init(&range);
2321 switch (process_specified_packets(cf, &range, "Recalculating statistics on",
2322 "all packets", TRUE, retap_packet,
2325 /* Completed successfully. */
2329 /* Well, the user decided to abort the refiltering.
2330 Return CF_READ_ABORTED so our caller knows they did that. */
2331 return CF_READ_ABORTED;
2334 /* Error while retapping. */
2335 return CF_READ_ERROR;
2338 g_assert_not_reached();
2343 print_args_t *print_args;
2344 gboolean print_header_line;
2345 char *header_line_buf;
2346 int header_line_buf_len;
2347 gboolean print_formfeed;
2348 gboolean print_separator;
2352 int num_visible_cols;
2354 } print_callback_args_t;
2357 print_packet(capture_file *cf, frame_data *fdata,
2358 struct wtap_pkthdr *phdr, const guint8 *pd,
2361 print_callback_args_t *args = argsp;
2368 gboolean proto_tree_needed;
2369 char bookmark_name[9+10+1]; /* "__frameNNNNNNNNNN__\0" */
2370 char bookmark_title[6+10+1]; /* "Frame NNNNNNNNNN__\0" */
2372 /* Create the protocol tree, and make it visible, if we're printing
2373 the dissection or the hex data.
2374 XXX - do we need it if we're just printing the hex data? */
2376 args->print_args->print_dissections != print_dissections_none || args->print_args->print_hex || have_custom_cols(&cf->cinfo);
2377 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2379 /* Fill in the column information if we're printing the summary
2381 if (args->print_args->print_summary) {
2382 col_custom_prime_edt(&edt, &cf->cinfo);
2383 epan_dissect_run(&edt, phdr, pd, fdata, &cf->cinfo);
2384 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2386 epan_dissect_run(&edt, phdr, pd, fdata, NULL);
2388 if (args->print_formfeed) {
2389 if (!new_page(args->print_args->stream))
2392 if (args->print_separator) {
2393 if (!print_line(args->print_args->stream, 0, ""))
2399 * We generate bookmarks, if the output format supports them.
2400 * The name is "__frameN__".
2402 g_snprintf(bookmark_name, sizeof bookmark_name, "__frame%u__", fdata->num);
2404 if (args->print_args->print_summary) {
2405 if (args->print_header_line) {
2406 if (!print_line(args->print_args->stream, 0, args->header_line_buf))
2408 args->print_header_line = FALSE; /* we might not need to print any more */
2410 cp = &args->line_buf[0];
2412 for (i = 0; i < args->num_visible_cols; i++) {
2413 /* Find the length of the string for this column. */
2414 column_len = (int) strlen(cf->cinfo.col_data[args->visible_cols[i]]);
2415 if (args->col_widths[i] > column_len)
2416 column_len = args->col_widths[i];
2418 /* Make sure there's room in the line buffer for the column; if not,
2419 double its length. */
2420 line_len += column_len + 1; /* "+1" for space */
2421 if (line_len > args->line_buf_len) {
2422 cp_off = (int) (cp - args->line_buf);
2423 args->line_buf_len = 2 * line_len;
2424 args->line_buf = g_realloc(args->line_buf, args->line_buf_len + 1);
2425 cp = args->line_buf + cp_off;
2428 /* Right-justify the packet number column. */
2429 if (cf->cinfo.col_fmt[args->visible_cols[i]] == COL_NUMBER)
2430 g_snprintf(cp, column_len+1, "%*s", args->col_widths[i], cf->cinfo.col_data[args->visible_cols[i]]);
2432 g_snprintf(cp, column_len+1, "%-*s", args->col_widths[i], cf->cinfo.col_data[args->visible_cols[i]]);
2434 if (i != args->num_visible_cols - 1)
2440 * Generate a bookmark, using the summary line as the title.
2442 if (!print_bookmark(args->print_args->stream, bookmark_name,
2446 if (!print_line(args->print_args->stream, 0, args->line_buf))
2450 * Generate a bookmark, using "Frame N" as the title, as we're not
2451 * printing the summary line.
2453 g_snprintf(bookmark_title, sizeof bookmark_title, "Frame %u", fdata->num);
2454 if (!print_bookmark(args->print_args->stream, bookmark_name,
2457 } /* if (print_summary) */
2459 if (args->print_args->print_dissections != print_dissections_none) {
2460 if (args->print_args->print_summary) {
2461 /* Separate the summary line from the tree with a blank line. */
2462 if (!print_line(args->print_args->stream, 0, ""))
2466 /* Print the information in that tree. */
2467 if (!proto_tree_print(args->print_args, &edt, args->print_args->stream))
2470 /* Print a blank line if we print anything after this (aka more than one packet). */
2471 args->print_separator = TRUE;
2473 /* Print a header line if we print any more packet summaries */
2474 args->print_header_line = TRUE;
2477 if (args->print_args->print_hex) {
2478 /* Print the full packet data as hex. */
2479 if (!print_hex_data(args->print_args->stream, &edt))
2482 /* Print a blank line if we print anything after this (aka more than one packet). */
2483 args->print_separator = TRUE;
2485 /* Print a header line if we print any more packet summaries */
2486 args->print_header_line = TRUE;
2487 } /* if (args->print_args->print_dissections != print_dissections_none) */
2489 epan_dissect_cleanup(&edt);
2491 /* do we want to have a formfeed between each packet from now on? */
2492 if (args->print_args->print_formfeed) {
2493 args->print_formfeed = TRUE;
2499 epan_dissect_cleanup(&edt);
2504 cf_print_packets(capture_file *cf, print_args_t *print_args)
2506 print_callback_args_t callback_args;
2509 int i, cp_off, column_len, line_len;
2510 int num_visible_col = 0, last_visible_col = 0, visible_col_count;
2515 callback_args.print_args = print_args;
2516 callback_args.print_header_line = TRUE;
2517 callback_args.header_line_buf = NULL;
2518 callback_args.header_line_buf_len = 256;
2519 callback_args.print_formfeed = FALSE;
2520 callback_args.print_separator = FALSE;
2521 callback_args.line_buf = NULL;
2522 callback_args.line_buf_len = 256;
2523 callback_args.col_widths = NULL;
2524 callback_args.num_visible_cols = 0;
2525 callback_args.visible_cols = NULL;
2527 if (!print_preamble(print_args->stream, cf->filename)) {
2528 destroy_print_stream(print_args->stream);
2529 return CF_PRINT_WRITE_ERROR;
2532 if (print_args->print_summary) {
2533 /* We're printing packet summaries. Allocate the header line buffer
2534 and get the column widths. */
2535 callback_args.header_line_buf = g_malloc(callback_args.header_line_buf_len + 1);
2537 /* Find the number of visible columns and the last visible column */
2538 for (i = 0; i < prefs.num_cols; i++) {
2540 clp = g_list_nth(prefs.col_list, i);
2541 if (clp == NULL) /* Sanity check, Invalid column requested */
2544 cfmt = (fmt_data *) clp->data;
2545 if (cfmt->visible) {
2547 last_visible_col = i;
2551 /* Find the widths for each of the columns - maximum of the
2552 width of the title and the width of the data - and construct
2553 a buffer with a line containing the column titles. */
2554 callback_args.num_visible_cols = num_visible_col;
2555 callback_args.col_widths = (gint *) g_malloc(sizeof(gint) * num_visible_col);
2556 callback_args.visible_cols = (gint *) g_malloc(sizeof(gint) * num_visible_col);
2557 cp = &callback_args.header_line_buf[0];
2559 visible_col_count = 0;
2560 for (i = 0; i < cf->cinfo.num_cols; i++) {
2562 clp = g_list_nth(prefs.col_list, i);
2563 if (clp == NULL) /* Sanity check, Invalid column requested */
2566 cfmt = (fmt_data *) clp->data;
2567 if (cfmt->visible == FALSE)
2570 /* Save the order of visible columns */
2571 callback_args.visible_cols[visible_col_count] = i;
2573 /* Don't pad the last column. */
2574 if (i == last_visible_col)
2575 callback_args.col_widths[visible_col_count] = 0;
2577 callback_args.col_widths[visible_col_count] = (gint) strlen(cf->cinfo.col_title[i]);
2578 data_width = get_column_char_width(get_column_format(i));
2579 if (data_width > callback_args.col_widths[visible_col_count])
2580 callback_args.col_widths[visible_col_count] = data_width;
2583 /* Find the length of the string for this column. */
2584 column_len = (int) strlen(cf->cinfo.col_title[i]);
2585 if (callback_args.col_widths[i] > column_len)
2586 column_len = callback_args.col_widths[visible_col_count];
2588 /* Make sure there's room in the line buffer for the column; if not,
2589 double its length. */
2590 line_len += column_len + 1; /* "+1" for space */
2591 if (line_len > callback_args.header_line_buf_len) {
2592 cp_off = (int) (cp - callback_args.header_line_buf);
2593 callback_args.header_line_buf_len = 2 * line_len;
2594 callback_args.header_line_buf = g_realloc(callback_args.header_line_buf,
2595 callback_args.header_line_buf_len + 1);
2596 cp = callback_args.header_line_buf + cp_off;
2599 /* Right-justify the packet number column. */
2600 /* if (cf->cinfo.col_fmt[i] == COL_NUMBER)
2601 g_snprintf(cp, column_len+1, "%*s", callback_args.col_widths[visible_col_count], cf->cinfo.col_title[i]);
2603 g_snprintf(cp, column_len+1, "%-*s", callback_args.col_widths[visible_col_count], cf->cinfo.col_title[i]);
2605 if (i != cf->cinfo.num_cols - 1)
2608 visible_col_count++;
2612 /* Now start out the main line buffer with the same length as the
2613 header line buffer. */
2614 callback_args.line_buf_len = callback_args.header_line_buf_len;
2615 callback_args.line_buf = g_malloc(callback_args.line_buf_len + 1);
2616 } /* if (print_summary) */
2618 /* Iterate through the list of packets, printing the packets we were
2620 ret = process_specified_packets(cf, &print_args->range, "Printing",
2621 "selected packets", TRUE, print_packet,
2624 g_free(callback_args.header_line_buf);
2625 g_free(callback_args.line_buf);
2626 g_free(callback_args.col_widths);
2627 g_free(callback_args.visible_cols);
2632 /* Completed successfully. */
2636 /* Well, the user decided to abort the printing.
2638 XXX - note that what got generated before they did that
2639 will get printed if we're piping to a print program; we'd
2640 have to write to a file and then hand that to the print
2641 program to make it actually not print anything. */
2645 /* Error while printing.
2647 XXX - note that what got generated before they did that
2648 will get printed if we're piping to a print program; we'd
2649 have to write to a file and then hand that to the print
2650 program to make it actually not print anything. */
2651 destroy_print_stream(print_args->stream);
2652 return CF_PRINT_WRITE_ERROR;
2655 if (!print_finale(print_args->stream)) {
2656 destroy_print_stream(print_args->stream);
2657 return CF_PRINT_WRITE_ERROR;
2660 if (!destroy_print_stream(print_args->stream))
2661 return CF_PRINT_WRITE_ERROR;
2667 write_pdml_packet(capture_file *cf _U_, frame_data *fdata,
2668 struct wtap_pkthdr *phdr, const guint8 *pd,
2674 /* Create the protocol tree, but don't fill in the column information. */
2675 epan_dissect_init(&edt, TRUE, TRUE);
2676 epan_dissect_run(&edt, phdr, pd, fdata, NULL);
2678 /* Write out the information in that tree. */
2679 proto_tree_write_pdml(&edt, fh);
2681 epan_dissect_cleanup(&edt);
2687 cf_write_pdml_packets(capture_file *cf, print_args_t *print_args)
2692 fh = ws_fopen(print_args->file, "w");
2694 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2696 write_pdml_preamble(fh, cf->filename);
2699 return CF_PRINT_WRITE_ERROR;
2702 /* Iterate through the list of packets, printing the packets we were
2704 ret = process_specified_packets(cf, &print_args->range, "Writing PDML",
2705 "selected packets", TRUE,
2706 write_pdml_packet, fh);
2711 /* Completed successfully. */
2715 /* Well, the user decided to abort the printing. */
2719 /* Error while printing. */
2721 return CF_PRINT_WRITE_ERROR;
2724 write_pdml_finale(fh);
2727 return CF_PRINT_WRITE_ERROR;
2730 /* XXX - check for an error */
2737 write_psml_packet(capture_file *cf, frame_data *fdata,
2738 struct wtap_pkthdr *phdr, const guint8 *pd,
2743 gboolean proto_tree_needed;
2745 /* Fill in the column information, only create the protocol tree
2746 if having custom columns. */
2747 proto_tree_needed = have_custom_cols(&cf->cinfo);
2748 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2749 col_custom_prime_edt(&edt, &cf->cinfo);
2750 epan_dissect_run(&edt, phdr, pd, fdata, &cf->cinfo);
2751 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2753 /* Write out the information in that tree. */
2754 proto_tree_write_psml(&edt, fh);
2756 epan_dissect_cleanup(&edt);
2762 cf_write_psml_packets(capture_file *cf, print_args_t *print_args)
2767 fh = ws_fopen(print_args->file, "w");
2769 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2771 write_psml_preamble(fh);
2774 return CF_PRINT_WRITE_ERROR;
2777 /* Iterate through the list of packets, printing the packets we were
2779 ret = process_specified_packets(cf, &print_args->range, "Writing PSML",
2780 "selected packets", TRUE,
2781 write_psml_packet, fh);
2786 /* Completed successfully. */
2790 /* Well, the user decided to abort the printing. */
2794 /* Error while printing. */
2796 return CF_PRINT_WRITE_ERROR;
2799 write_psml_finale(fh);
2802 return CF_PRINT_WRITE_ERROR;
2805 /* XXX - check for an error */
2812 write_csv_packet(capture_file *cf, frame_data *fdata,
2813 struct wtap_pkthdr *phdr, const guint8 *pd,
2818 gboolean proto_tree_needed;
2820 /* Fill in the column information, only create the protocol tree
2821 if having custom columns. */
2822 proto_tree_needed = have_custom_cols(&cf->cinfo);
2823 epan_dissect_init(&edt, proto_tree_needed, proto_tree_needed);
2824 col_custom_prime_edt(&edt, &cf->cinfo);
2825 epan_dissect_run(&edt, phdr, pd, fdata, &cf->cinfo);
2826 epan_dissect_fill_in_columns(&edt, FALSE, TRUE);
2828 /* Write out the information in that tree. */
2829 proto_tree_write_csv(&edt, fh);
2831 epan_dissect_cleanup(&edt);
2837 cf_write_csv_packets(capture_file *cf, print_args_t *print_args)
2842 fh = ws_fopen(print_args->file, "w");
2844 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2846 write_csv_preamble(fh);
2849 return CF_PRINT_WRITE_ERROR;
2852 /* Iterate through the list of packets, printing the packets we were
2854 ret = process_specified_packets(cf, &print_args->range, "Writing CSV",
2855 "selected packets", TRUE,
2856 write_csv_packet, fh);
2861 /* Completed successfully. */
2865 /* Well, the user decided to abort the printing. */
2869 /* Error while printing. */
2871 return CF_PRINT_WRITE_ERROR;
2874 write_csv_finale(fh);
2877 return CF_PRINT_WRITE_ERROR;
2880 /* XXX - check for an error */
2887 write_carrays_packet(capture_file *cf _U_, frame_data *fdata,
2888 struct wtap_pkthdr *phdr,
2889 const guint8 *pd, void *argsp)
2894 epan_dissect_init(&edt, TRUE, TRUE);
2895 epan_dissect_run(&edt, phdr, pd, fdata, NULL);
2896 proto_tree_write_carrays(fdata->num, fh, &edt);
2897 epan_dissect_cleanup(&edt);
2903 cf_write_carrays_packets(capture_file *cf, print_args_t *print_args)
2908 fh = ws_fopen(print_args->file, "w");
2911 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2913 write_carrays_preamble(fh);
2917 return CF_PRINT_WRITE_ERROR;
2920 /* Iterate through the list of packets, printing the packets we were
2922 ret = process_specified_packets(cf, &print_args->range,
2924 "selected packets", TRUE,
2925 write_carrays_packet, fh);
2928 /* Completed successfully. */
2931 /* Well, the user decided to abort the printing. */
2934 /* Error while printing. */
2936 return CF_PRINT_WRITE_ERROR;
2939 write_carrays_finale(fh);
2943 return CF_PRINT_WRITE_ERROR;
2951 cf_find_packet_protocol_tree(capture_file *cf, const char *string,
2952 search_direction dir)
2956 mdata.string = string;
2957 mdata.string_len = strlen(string);
2958 return find_packet(cf, match_protocol_tree, &mdata, dir);
2962 cf_find_string_protocol_tree(capture_file *cf, proto_tree *tree, match_data *mdata)
2964 mdata->frame_matched = FALSE;
2965 mdata->string = convert_string_case(cf->sfilter, cf->case_type);
2966 mdata->string_len = strlen(mdata->string);
2968 /* Iterate through all the nodes looking for matching text */
2969 proto_tree_children_foreach(tree, match_subtree_text, mdata);
2970 return mdata->frame_matched ? MR_MATCHED : MR_NOTMATCHED;
2974 match_protocol_tree(capture_file *cf, frame_data *fdata, void *criterion)
2976 match_data *mdata = criterion;
2979 /* Load the frame's data. */
2980 if (!cf_read_frame(cf, fdata)) {
2981 /* Attempt to get the packet failed. */
2985 /* Construct the protocol tree, including the displayed text */
2986 epan_dissect_init(&edt, TRUE, TRUE);
2987 /* We don't need the column information */
2988 epan_dissect_run(&edt, &cf->phdr, cf->pd, fdata, NULL);
2990 /* Iterate through all the nodes, seeing if they have text that matches. */
2992 mdata->frame_matched = FALSE;
2993 proto_tree_children_foreach(edt.tree, match_subtree_text, mdata);
2994 epan_dissect_cleanup(&edt);
2995 return mdata->frame_matched ? MR_MATCHED : MR_NOTMATCHED;
2999 match_subtree_text(proto_node *node, gpointer data)
3001 match_data *mdata = (match_data *) data;
3002 const gchar *string = mdata->string;
3003 size_t string_len = mdata->string_len;
3004 capture_file *cf = mdata->cf;
3005 field_info *fi = PNODE_FINFO(node);
3006 gchar label_str[ITEM_LABEL_LENGTH];
3013 /* dissection with an invisible proto tree? */
3016 if (mdata->frame_matched) {
3017 /* We already had a match; don't bother doing any more work. */
3021 /* Don't match invisible entries. */
3022 if (PROTO_ITEM_IS_HIDDEN(node))
3025 /* was a free format label produced? */
3027 label_ptr = fi->rep->representation;
3029 /* no, make a generic label */
3030 label_ptr = label_str;
3031 proto_item_fill_label(fi, label_str);
3034 /* Does that label match? */
3035 label_len = strlen(label_ptr);
3036 for (i = 0; i < label_len; i++) {
3037 c_char = label_ptr[i];
3039 c_char = toupper(c_char);
3040 if (c_char == string[c_match]) {
3042 if (c_match == string_len) {
3043 /* No need to look further; we have a match */
3044 mdata->frame_matched = TRUE;
3052 /* Recurse into the subtree, if it exists */
3053 if (node->first_child != NULL)
3054 proto_tree_children_foreach(node, match_subtree_text, mdata);
3058 cf_find_packet_summary_line(capture_file *cf, const char *string,
3059 search_direction dir)
3063 mdata.string = string;
3064 mdata.string_len = strlen(string);
3065 return find_packet(cf, match_summary_line, &mdata, dir);
3069 match_summary_line(capture_file *cf, frame_data *fdata, void *criterion)
3071 match_data *mdata = criterion;
3072 const gchar *string = mdata->string;
3073 size_t string_len = mdata->string_len;
3075 const char *info_column;
3076 size_t info_column_len;
3077 match_result result = MR_NOTMATCHED;
3083 /* Load the frame's data. */
3084 if (!cf_read_frame(cf, fdata)) {
3085 /* Attempt to get the packet failed. */
3089 /* Don't bother constructing the protocol tree */
3090 epan_dissect_init(&edt, FALSE, FALSE);
3091 /* Get the column information */
3092 epan_dissect_run(&edt, &cf->phdr, cf->pd, fdata, &cf->cinfo);
3094 /* Find the Info column */
3095 for (colx = 0; colx < cf->cinfo.num_cols; colx++) {
3096 if (cf->cinfo.fmt_matx[colx][COL_INFO]) {
3097 /* Found it. See if we match. */
3098 info_column = edt.pi.cinfo->col_data[colx];
3099 info_column_len = strlen(info_column);
3100 for (i = 0; i < info_column_len; i++) {
3101 c_char = info_column[i];
3103 c_char = toupper(c_char);
3104 if (c_char == string[c_match]) {
3106 if (c_match == string_len) {
3107 result = MR_MATCHED;
3116 epan_dissect_cleanup(&edt);
3123 } cbs_t; /* "Counted byte string" */
3126 cf_find_packet_data(capture_file *cf, const guint8 *string, size_t string_size,
3127 search_direction dir)
3132 info.data_len = string_size;
3134 /* String or hex search? */
3136 /* String search - what type of string? */
3137 switch (cf->scs_type) {
3139 case SCS_ASCII_AND_UNICODE:
3140 return find_packet(cf, match_ascii_and_unicode, &info, dir);
3143 return find_packet(cf, match_ascii, &info, dir);
3146 return find_packet(cf, match_unicode, &info, dir);
3149 g_assert_not_reached();
3153 return find_packet(cf, match_binary, &info, dir);
3157 match_ascii_and_unicode(capture_file *cf, frame_data *fdata, void *criterion)
3159 cbs_t *info = criterion;
3160 const guint8 *ascii_text = info->data;
3161 size_t textlen = info->data_len;
3162 match_result result;
3168 /* Load the frame's data. */
3169 if (!cf_read_frame(cf, fdata)) {
3170 /* Attempt to get the packet failed. */
3174 result = MR_NOTMATCHED;
3175 buf_len = fdata->cap_len;
3177 while (i < buf_len) {
3180 c_char = toupper(c_char);
3181 if (c_char != '\0') {
3182 if (c_char == ascii_text[c_match]) {
3184 if (c_match == textlen) {
3185 result = MR_MATCHED;
3186 cf->search_pos = i; /* Save the position of the last character
3187 for highlighting the field. */
3192 g_assert(i>=c_match);
3193 i -= (guint32)c_match;
3203 match_ascii(capture_file *cf, frame_data *fdata, void *criterion)
3205 cbs_t *info = criterion;
3206 const guint8 *ascii_text = info->data;
3207 size_t textlen = info->data_len;
3208 match_result result;
3214 /* Load the frame's data. */
3215 if (!cf_read_frame(cf, fdata)) {
3216 /* Attempt to get the packet failed. */
3220 result = MR_NOTMATCHED;
3221 buf_len = fdata->cap_len;
3223 while (i < buf_len) {
3226 c_char = toupper(c_char);
3227 if (c_char == ascii_text[c_match]) {
3229 if (c_match == textlen) {
3230 result = MR_MATCHED;
3231 cf->search_pos = i; /* Save the position of the last character
3232 for highlighting the field. */
3237 g_assert(i>=c_match);
3238 i -= (guint32)c_match;
3248 match_unicode(capture_file *cf, frame_data *fdata, void *criterion)
3250 cbs_t *info = criterion;
3251 const guint8 *ascii_text = info->data;
3252 size_t textlen = info->data_len;
3253 match_result result;
3259 /* Load the frame's data. */
3260 if (!cf_read_frame(cf, fdata)) {
3261 /* Attempt to get the packet failed. */
3265 result = MR_NOTMATCHED;
3266 buf_len = fdata->cap_len;
3268 while (i < buf_len) {
3271 c_char = toupper(c_char);
3272 if (c_char == ascii_text[c_match]) {
3274 if (c_match == textlen) {
3275 result = MR_MATCHED;
3276 cf->search_pos = i; /* Save the position of the last character
3277 for highlighting the field. */
3283 g_assert(i>=(c_match*2));
3284 i -= (guint32)c_match*2;
3293 match_binary(capture_file *cf, frame_data *fdata, void *criterion)
3295 cbs_t *info = criterion;
3296 const guint8 *binary_data = info->data;
3297 size_t datalen = info->data_len;
3298 match_result result;
3303 /* Load the frame's data. */
3304 if (!cf_read_frame(cf, fdata)) {
3305 /* Attempt to get the packet failed. */
3309 result = MR_NOTMATCHED;
3310 buf_len = fdata->cap_len;
3312 while (i < buf_len) {
3313 if (cf->pd[i] == binary_data[c_match]) {
3315 if (c_match == datalen) {
3316 result = MR_MATCHED;
3317 cf->search_pos = i; /* Save the position of the last character
3318 for highlighting the field. */
3323 g_assert(i>=c_match);
3324 i -= (guint32)c_match;
3333 cf_find_packet_dfilter(capture_file *cf, dfilter_t *sfcode,
3334 search_direction dir)
3336 return find_packet(cf, match_dfilter, sfcode, dir);
3340 cf_find_packet_dfilter_string(capture_file *cf, const char *filter,
3341 search_direction dir)
3346 if (!dfilter_compile(filter, &sfcode)) {
3348 * XXX - this shouldn't happen, as the filter string is machine
3353 if (sfcode == NULL) {
3355 * XXX - this shouldn't happen, as the filter string is machine
3360 result = find_packet(cf, match_dfilter, sfcode, dir);
3361 dfilter_free(sfcode);
3366 match_dfilter(capture_file *cf, frame_data *fdata, void *criterion)
3368 dfilter_t *sfcode = criterion;
3370 match_result result;
3372 /* Load the frame's data. */
3373 if (!cf_read_frame(cf, fdata)) {
3374 /* Attempt to get the packet failed. */
3378 epan_dissect_init(&edt, TRUE, FALSE);
3379 epan_dissect_prime_dfilter(&edt, sfcode);
3380 epan_dissect_run(&edt, &cf->phdr, cf->pd, fdata, NULL);
3381 result = dfilter_apply_edt(sfcode, &edt) ? MR_MATCHED : MR_NOTMATCHED;
3382 epan_dissect_cleanup(&edt);
3387 cf_find_packet_marked(capture_file *cf, search_direction dir)
3389 return find_packet(cf, match_marked, NULL, dir);
3393 match_marked(capture_file *cf _U_, frame_data *fdata, void *criterion _U_)
3395 return fdata->flags.marked ? MR_MATCHED : MR_NOTMATCHED;
3399 cf_find_packet_time_reference(capture_file *cf, search_direction dir)
3401 return find_packet(cf, match_time_reference, NULL, dir);
3405 match_time_reference(capture_file *cf _U_, frame_data *fdata, void *criterion _U_)
3407 return fdata->flags.ref_time ? MR_MATCHED : MR_NOTMATCHED;
3411 find_packet(capture_file *cf,
3412 match_result (*match_function)(capture_file *, frame_data *, void *),
3413 void *criterion, search_direction dir)
3415 frame_data *start_fd;
3418 frame_data *new_fd = NULL;
3419 progdlg_t *progbar = NULL;
3424 GTimeVal start_time;
3425 gchar status_str[100];
3426 int progbar_nextstep;
3427 int progbar_quantum;
3429 match_result result;
3431 start_fd = cf->current_frame;
3432 if (start_fd != NULL) {
3433 /* Iterate through the list of packets, starting at the packet we've
3434 picked, calling a routine to run the filter on the packet, see if
3435 it matches, and stop if so. */
3437 framenum = start_fd->num;
3439 /* Update the progress bar when it gets to this value. */
3440 progbar_nextstep = 0;
3441 /* When we reach the value that triggers a progress bar update,
3442 bump that value by this amount. */
3443 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
3444 /* Progress so far. */
3448 g_get_current_time(&start_time);
3450 title = cf->sfilter?cf->sfilter:"";
3452 /* Create the progress bar if necessary.
3453 We check on every iteration of the loop, so that it takes no
3454 longer than the standard time to create it (otherwise, for a
3455 large file, we might take considerably longer than that standard
3456 time in order to get to the next progress bar step). */
3457 if (progbar == NULL)
3458 progbar = delayed_create_progress_dlg(cf->window, "Searching", title,
3459 FALSE, &stop_flag, &start_time, progbar_val);
3461 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
3462 when we update it, we have to run the GTK+ main loop to get it
3463 to repaint what's pending, and doing so may involve an "ioctl()"
3464 to see if there's any pending input from an X server, and doing
3465 that for every packet can be costly, especially on a big file. */
3466 if (count >= progbar_nextstep) {
3467 /* let's not divide by zero. I should never be started
3468 * with count == 0, so let's assert that
3470 g_assert(cf->count > 0);
3472 progbar_val = (gfloat) count / cf->count;
3474 if (progbar != NULL) {
3475 g_snprintf(status_str, sizeof(status_str),
3476 "%4u of %u packets", count, cf->count);
3477 update_progress_dlg(progbar, progbar_val, status_str);
3480 progbar_nextstep += progbar_quantum;
3484 /* Well, the user decided to abort the search. Go back to the
3485 frame where we started. */
3490 /* Go past the current frame. */
3491 if (dir == SD_BACKWARD) {
3492 /* Go on to the previous frame. */
3493 if (framenum == 1) {
3495 * XXX - other apps have a bit more of a detailed message
3496 * for this, and instead of offering "OK" and "Cancel",
3497 * they offer things such as "Continue" and "Cancel";
3498 * we need an API for popping up alert boxes with
3499 * {Verb} and "Cancel".
3502 if (prefs.gui_find_wrap)
3504 statusbar_push_temporary_msg("Search reached the beginning. Continuing at end.");
3505 framenum = cf->count; /* wrap around */
3509 statusbar_push_temporary_msg("Search reached the beginning.");
3510 framenum = start_fd->num; /* stay on previous packet */
3515 /* Go on to the next frame. */
3516 if (framenum == cf->count) {
3517 if (prefs.gui_find_wrap)
3519 statusbar_push_temporary_msg("Search reached the end. Continuing at beginning.");
3520 framenum = 1; /* wrap around */
3524 statusbar_push_temporary_msg("Search reached the end.");
3525 framenum = start_fd->num; /* stay on previous packet */
3530 fdata = frame_data_sequence_find(cf->frames, framenum);
3534 /* Is this packet in the display? */
3535 if (fdata->flags.passed_dfilter) {
3536 /* Yes. Does it match the search criterion? */
3537 result = (*match_function)(cf, fdata, criterion);
3538 if (result == MR_ERROR) {
3539 /* Error; our caller has reported the error. Go back to the frame
3540 where we started. */
3543 } else if (result == MR_MATCHED) {
3544 /* Yes. Go to the new frame. */
3550 if (fdata == start_fd) {
3551 /* We're back to the frame we were on originally, and that frame
3552 doesn't match the search filter. The search failed. */
3557 /* We're done scanning the packets; destroy the progress bar if it
3559 if (progbar != NULL)
3560 destroy_progress_dlg(progbar);
3563 if (new_fd != NULL) {
3564 /* Find and select */
3565 cf->search_in_progress = TRUE;
3566 found = packet_list_select_row_from_data(new_fd);
3567 cf->search_in_progress = FALSE;
3568 cf->search_pos = 0; /* Reset the position */
3570 /* We didn't find a row corresponding to this frame.
3571 This means that the frame isn't being displayed currently,
3572 so we can't select it. */
3573 simple_message_box(ESD_TYPE_INFO, NULL,
3574 "The capture file is probably not fully dissected.",
3575 "End of capture exceeded!");
3578 return TRUE; /* success */
3580 return FALSE; /* failure */
3584 cf_goto_frame(capture_file *cf, guint fnumber)
3588 fdata = frame_data_sequence_find(cf->frames, fnumber);
3590 if (fdata == NULL) {
3591 /* we didn't find a packet with that packet number */
3592 statusbar_push_temporary_msg("There is no packet number %u.", fnumber);
3593 return FALSE; /* we failed to go to that packet */
3595 if (!fdata->flags.passed_dfilter) {
3596 /* that packet currently isn't displayed */
3597 /* XXX - add it to the set of displayed packets? */
3598 statusbar_push_temporary_msg("Packet number %u isn't displayed.", fnumber);
3599 return FALSE; /* we failed to go to that packet */
3602 if (!packet_list_select_row_from_data(fdata)) {
3603 /* We didn't find a row corresponding to this frame.
3604 This means that the frame isn't being displayed currently,
3605 so we can't select it. */
3606 simple_message_box(ESD_TYPE_INFO, NULL,
3607 "The capture file is probably not fully dissected.",
3608 "End of capture exceeded!");
3611 return TRUE; /* we got to that packet */
3615 cf_goto_top_frame(void)
3617 /* Find and select */
3618 packet_list_select_first_row();
3619 return TRUE; /* we got to that packet */
3623 cf_goto_bottom_frame(void)
3625 /* Find and select */
3626 packet_list_select_last_row();
3627 return TRUE; /* we got to that packet */
3631 * Go to frame specified by currently selected protocol tree item.
3634 cf_goto_framenum(capture_file *cf)
3636 header_field_info *hfinfo;
3639 if (cf->finfo_selected) {
3640 hfinfo = cf->finfo_selected->hfinfo;
3642 if (hfinfo->type == FT_FRAMENUM) {
3643 framenum = fvalue_get_uinteger(&cf->finfo_selected->value);
3645 return cf_goto_frame(cf, framenum);
3652 /* Select the packet on a given row. */
3654 cf_select_packet(capture_file *cf, int row)
3656 epan_dissect_t *old_edt;
3659 /* Get the frame data struct pointer for this frame */
3660 fdata = packet_list_get_row_data(row);
3662 if (fdata == NULL) {
3663 /* XXX - if a GtkCList's selection mode is GTK_SELECTION_BROWSE, when
3664 the first entry is added to it by "real_insert_row()", that row
3665 is selected (see "real_insert_row()", in "ui/gtk/gtkclist.c", in both
3666 our version and the vanilla GTK+ version).
3668 This means that a "select-row" signal is emitted; this causes
3669 "packet_list_select_cb()" to be called, which causes "cf_select_packet()"
3672 "cf_select_packet()" fetches, above, the data associated with the
3673 row that was selected; however, as "gtk_clist_append()", which
3674 called "real_insert_row()", hasn't yet returned, we haven't yet
3675 associated any data with that row, so we get back a null pointer.
3677 We can't assume that there's only one frame in the frame list,
3678 either, as we may be filtering the display.
3680 We therefore assume that, if "row" is 0, i.e. the first row
3681 is being selected, and "cf->first_displayed" equals
3682 "cf->last_displayed", i.e. there's only one frame being
3683 displayed, that frame is the frame we want.
3685 This means we have to set "cf->first_displayed" and
3686 "cf->last_displayed" before adding the row to the
3687 GtkCList; see the comment in "add_packet_to_packet_list()". */
3689 if (row == 0 && cf->first_displayed == cf->last_displayed)
3690 fdata = frame_data_sequence_find(cf->frames, cf->first_displayed);
3693 /* If fdata _still_ isn't set simply give up. */
3694 if (fdata == NULL) {
3698 /* Get the data in that frame. */
3699 if (!cf_read_frame (cf, fdata)) {
3703 /* Record that this frame is the current frame. */
3704 cf->current_frame = fdata;
3705 cf->current_row = row;
3708 /* Create the logical protocol tree. */
3709 /* We don't need the columns here. */
3710 cf->edt = epan_dissect_new(TRUE, TRUE);
3712 tap_build_interesting(cf->edt);
3713 epan_dissect_run(cf->edt, &cf->phdr, cf->pd, cf->current_frame,
3716 dfilter_macro_build_ftv_cache(cf->edt->tree);
3718 cf_callback_invoke(cf_cb_packet_selected, cf);
3720 if (old_edt != NULL)
3721 epan_dissect_free(old_edt);
3725 /* Unselect the selected packet, if any. */
3727 cf_unselect_packet(capture_file *cf)
3729 epan_dissect_t *old_edt = cf->edt;
3733 /* No packet is selected. */
3734 cf->current_frame = NULL;
3735 cf->current_row = 0;
3737 cf_callback_invoke(cf_cb_packet_unselected, cf);
3739 /* No protocol tree means no selected field. */
3740 cf_unselect_field(cf);
3742 /* Destroy the epan_dissect_t for the unselected packet. */
3743 if (old_edt != NULL)
3744 epan_dissect_free(old_edt);
3747 /* Unset the selected protocol tree field, if any. */
3749 cf_unselect_field(capture_file *cf)
3751 cf->finfo_selected = NULL;
3753 cf_callback_invoke(cf_cb_field_unselected, cf);
3757 * Mark a particular frame.
3760 cf_mark_frame(capture_file *cf, frame_data *frame)
3762 if (! frame->flags.marked) {
3763 frame->flags.marked = TRUE;
3764 if (cf->count > cf->marked_count)
3770 * Unmark a particular frame.
3773 cf_unmark_frame(capture_file *cf, frame_data *frame)
3775 if (frame->flags.marked) {
3776 frame->flags.marked = FALSE;
3777 if (cf->marked_count > 0)
3783 * Ignore a particular frame.
3786 cf_ignore_frame(capture_file *cf, frame_data *frame)
3788 if (! frame->flags.ignored) {
3789 frame->flags.ignored = TRUE;
3790 if (cf->count > cf->ignored_count)
3791 cf->ignored_count++;
3796 * Un-ignore a particular frame.
3799 cf_unignore_frame(capture_file *cf, frame_data *frame)
3801 if (frame->flags.ignored) {
3802 frame->flags.ignored = FALSE;
3803 if (cf->ignored_count > 0)
3804 cf->ignored_count--;
3809 * Read the comment in SHB block
3813 cf_read_shb_comment(capture_file *cf)
3815 wtapng_section_t *shb_inf;
3816 const gchar *temp_str;
3818 /* Get info from SHB */
3819 shb_inf = wtap_file_get_shb_info(cf->wth);
3820 if (shb_inf == NULL)
3822 temp_str = shb_inf->opt_comment;
3830 cf_update_capture_comment(capture_file *cf, gchar *comment)
3832 wtapng_section_t *shb_inf;
3834 /* Get info from SHB */
3835 shb_inf = wtap_file_get_shb_info(cf->wth);
3837 /* See if the comment has changed or not */
3838 if (shb_inf && shb_inf->opt_comment) {
3839 if (strcmp(shb_inf->opt_comment, comment) == 0) {
3848 /* The comment has changed, let's update it */
3849 wtap_write_shb_comment(cf->wth, comment);
3850 /* Mark the file as having unsaved changes */
3851 cf->unsaved_changes = TRUE;
3855 cf_update_packet_comment(capture_file *cf, frame_data *fdata, gchar *comment)
3857 if (fdata->opt_comment != NULL) {
3858 /* OK, remove the old comment. */
3859 g_free(fdata->opt_comment);
3860 fdata->opt_comment = NULL;
3861 cf->packet_comment_count--;
3863 if (comment != NULL) {
3864 /* Add the new comment. */
3865 fdata->opt_comment = comment;
3866 cf->packet_comment_count++;
3869 /* OK, we have unsaved changes. */
3870 cf->unsaved_changes = TRUE;
3874 * Does this capture file have any comments?
3877 cf_has_comments(capture_file *cf)
3879 return (cf_read_shb_comment(cf) != NULL || cf->packet_comment_count != 0);
3886 } save_callback_args_t;
3889 * Save a capture to a file, in a particular format, saving either
3890 * all packets, all currently-displayed packets, or all marked packets.
3892 * Returns TRUE if it succeeds, FALSE otherwise; if it fails, it pops
3893 * up a message box for the failure.
3896 save_packet(capture_file *cf _U_, frame_data *fdata,
3897 struct wtap_pkthdr *phdr, const guint8 *pd,
3900 save_callback_args_t *args = argsp;
3901 struct wtap_pkthdr hdr;
3903 gchar *display_basename;
3905 /* init the wtap header for saving */
3906 /* TODO: reuse phdr */
3907 /* XXX - these are the only flags that correspond to data that we have
3908 in the frame_data structure and that matter on a per-packet basis.
3910 For WTAP_HAS_CAP_LEN, either the file format has separate "captured"
3911 and "on the wire" lengths, or it doesn't.
3913 For WTAP_HAS_DROP_COUNT, Wiretap doesn't actually supply the value
3916 For WTAP_HAS_PACK_FLAGS, we currently don't save the FCS length
3917 from the packet flags. */
3918 hdr.presence_flags = 0;
3919 if (fdata->flags.has_ts)
3920 hdr.presence_flags |= WTAP_HAS_TS;
3921 if (fdata->flags.has_if_id)
3922 hdr.presence_flags |= WTAP_HAS_INTERFACE_ID;
3923 hdr.ts.secs = fdata->abs_ts.secs;
3924 hdr.ts.nsecs = fdata->abs_ts.nsecs;
3925 hdr.caplen = fdata->cap_len;
3926 hdr.len = fdata->pkt_len;
3927 hdr.pkt_encap = fdata->lnk_t;
3929 hdr.interface_id = fdata->interface_id; /* identifier of the interface. */
3931 hdr.opt_comment = fdata->opt_comment; /* NULL if not available */
3933 hdr.pseudo_header = phdr->pseudo_header;
3936 hdr.pack_flags = /* XXX - 0 for now (any value for "we don't have it"?) */
3938 /* and save the packet */
3939 if (!wtap_dump(args->pdh, &hdr, pd, &err)) {
3941 /* Wiretap error. */
3944 case WTAP_ERR_UNSUPPORTED_ENCAP:
3946 * This is a problem with the particular frame we're writing;
3947 * note that, and give the frame number.
3949 simple_error_message_box(
3950 "Frame %u has a network type that can't be saved in a \"%s\" file.",
3951 fdata->num, wtap_file_type_string(args->file_type));
3955 display_basename = g_filename_display_basename(args->fname);
3956 simple_error_message_box(
3957 "An error occurred while writing to the file \"%s\": %s.",
3958 display_basename, wtap_strerror(err));
3959 g_free(display_basename);
3964 write_failure_alert_box(args->fname, err);
3972 * Can this capture file be written out in any format using Wiretap
3973 * rather than by copying the raw data?
3976 cf_can_write_with_wiretap(capture_file *cf)
3980 for (ft = 0; ft < WTAP_NUM_FILE_TYPES; ft++) {
3981 /* To save a file with Wiretap, Wiretap has to handle that format,
3982 and its code to handle that format must be able to write a file
3983 with this file's encapsulation types. */
3984 if (wtap_dump_can_write_encaps(ft, cf->linktypes)) {
3985 /* OK, we can write it out in this type. */
3990 /* No, we couldn't save it in any format. */
3995 * Quick scan to find packet offsets.
3997 static cf_read_status_t
3998 rescan_file(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
4000 const struct wtap_pkthdr *phdr;
4005 progdlg_t *volatile progbar = NULL;
4007 volatile gint64 size;
4008 volatile float progbar_val;
4009 GTimeVal start_time;
4010 gchar status_str[100];
4011 volatile gint64 progbar_nextstep;
4012 volatile gint64 progbar_quantum;
4015 volatile int count = 0;
4017 volatile int displayed_once = 0;
4020 /* Close the old handle. */
4021 wtap_close(cf->wth);
4023 /* Open the new file. */
4024 cf->wth = wtap_open_offline(fname, err, &err_info, TRUE);
4025 if (cf->wth == NULL) {
4026 cf_open_failure_alert_box(fname, *err, err_info, FALSE, 0);
4027 return CF_READ_ERROR;
4030 /* We're scanning a file whose contents should be the same as what
4031 we had before, so we don't discard dissection state etc.. */
4034 /* Set the file name because we need it to set the follow stream filter.
4035 XXX - is that still true? We need it for other reasons, though,
4037 cf->filename = g_strdup(fname);
4039 /* Indicate whether it's a permanent or temporary file. */
4040 cf->is_tempfile = is_tempfile;
4042 /* No user changes yet. */
4043 cf->unsaved_changes = FALSE;
4045 cf->cd_t = wtap_file_type(cf->wth);
4046 cf->linktypes = g_array_sized_new(FALSE, FALSE, (guint) sizeof(int), 1);
4048 cf->snap = wtap_snapshot_length(cf->wth);
4049 if (cf->snap == 0) {
4050 /* Snapshot length not known. */
4051 cf->has_snap = FALSE;
4052 cf->snap = WTAP_MAX_PACKET_SIZE;
4054 cf->has_snap = TRUE;
4056 name_ptr = g_filename_display_basename(cf->filename);
4058 cf_callback_invoke(cf_cb_file_rescan_started, cf);
4060 /* Record whether the file is compressed.
4061 XXX - do we know this at open time? */
4062 cf->iscompressed = wtap_iscompressed(cf->wth);
4064 /* Find the size of the file. */
4065 size = wtap_file_size(cf->wth, NULL);
4067 /* Update the progress bar when it gets to this value. */
4068 progbar_nextstep = 0;
4069 /* When we reach the value that triggers a progress bar update,
4070 bump that value by this amount. */
4072 progbar_quantum = size/N_PROGBAR_UPDATES;
4073 if (progbar_quantum < MIN_QUANTUM)
4074 progbar_quantum = MIN_QUANTUM;
4076 progbar_quantum = 0;
4077 /* Progress so far. */
4081 g_get_current_time(&start_time);
4084 phdr = wtap_phdr(cf->wth);
4085 while ((wtap_read(cf->wth, err, &err_info, &data_offset))) {
4087 fdata = frame_data_sequence_find(cf->frames, framenum);
4088 fdata->file_off = data_offset;
4091 file_pos = wtap_read_so_far(cf->wth);
4093 /* Create the progress bar if necessary.
4094 * Check whether it should be created or not every MIN_NUMBER_OF_PACKET
4096 if ((progbar == NULL) && !(count % MIN_NUMBER_OF_PACKET)) {
4097 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
4098 progbar = delayed_create_progress_dlg(cf->window, "Rescanning", name_ptr,
4099 TRUE, &stop_flag, &start_time, progbar_val);
4102 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
4103 when we update it, we have to run the GTK+ main loop to get it
4104 to repaint what's pending, and doing so may involve an "ioctl()"
4105 to see if there's any pending input from an X server, and doing
4106 that for every packet can be costly, especially on a big file. */
4107 if (file_pos >= progbar_nextstep) {
4108 if (progbar != NULL) {
4109 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
4110 /* update the packet bar content on the first run or frequently on very large files */
4112 if (progbar_quantum > 500000 || displayed_once == 0) {
4113 if ((auto_scroll_live || displayed_once == 0 || cf->displayed_count < 1000) && cf->count != 0) {
4115 packets_bar_update();
4118 #endif /* HAVE_LIBPCAP */
4119 update_progress_dlg(progbar, progbar_val, status_str);
4121 progbar_nextstep += progbar_quantum;
4126 /* Well, the user decided to abort the rescan. Sadly, as this
4127 isn't a reread, recovering is difficult, so we'll just
4128 close the current capture. */
4132 /* Add this packet's link-layer encapsulation type to cf->linktypes, if
4133 it's not already there.
4134 XXX - yes, this is O(N), so if every packet had a different
4135 link-layer encapsulation type, it'd be O(N^2) to read the file, but
4136 there are probably going to be a small number of encapsulation types
4138 cf_add_encapsulation_type(cf, phdr->pkt_encap);
4141 /* Free the display name */
4144 /* We're done reading the file; destroy the progress bar if it was created. */
4145 if (progbar != NULL)
4146 destroy_progress_dlg(progbar);
4148 /* We're done reading sequentially through the file. */
4149 cf->state = FILE_READ_DONE;
4151 /* Close the sequential I/O side, to free up memory it requires. */
4152 wtap_sequential_close(cf->wth);
4154 /* compute the time it took to load the file */
4155 compute_elapsed(&start_time);
4157 /* Set the file encapsulation type now; we don't know what it is until
4158 we've looked at all the packets, as we don't know until then whether
4159 there's more than one type (and thus whether it's
4160 WTAP_ENCAP_PER_PACKET). */
4161 cf->lnk_t = wtap_file_encap(cf->wth);
4163 cf_callback_invoke(cf_cb_file_rescan_finished, cf);
4166 /* Our caller will give up at this point. */
4167 return CF_READ_ABORTED;
4171 /* Put up a message box noting that the read failed somewhere along
4172 the line. Don't throw out the stuff we managed to read, though,
4176 case WTAP_ERR_UNSUPPORTED:
4177 simple_error_message_box(
4178 "The capture file contains record data that Wireshark doesn't support.\n(%s)",
4183 case WTAP_ERR_UNSUPPORTED_ENCAP:
4184 simple_error_message_box(
4185 "The capture file has a packet with a network type that Wireshark doesn't support.\n(%s)",
4190 case WTAP_ERR_CANT_READ:
4191 simple_error_message_box(
4192 "An attempt to read from the capture file failed for"
4193 " some unknown reason.");
4196 case WTAP_ERR_SHORT_READ:
4197 simple_error_message_box(
4198 "The capture file appears to have been cut short"
4199 " in the middle of a packet.");
4202 case WTAP_ERR_BAD_FILE:
4203 simple_error_message_box(
4204 "The capture file appears to be damaged or corrupt.\n(%s)",
4209 case WTAP_ERR_DECOMPRESS:
4210 simple_error_message_box(
4211 "The compressed capture file appears to be damaged or corrupt.\n"
4217 simple_error_message_box(
4218 "An error occurred while reading the"
4219 " capture file: %s.", wtap_strerror(*err));
4222 return CF_READ_ERROR;
4228 cf_save_packets(capture_file *cf, const char *fname, guint save_format,
4229 gboolean compressed, gboolean discard_comments,
4230 gboolean dont_reopen)
4232 gchar *fname_new = NULL;
4241 save_callback_args_t callback_args;
4243 gchar *display_basename;
4248 cf_callback_invoke(cf_cb_file_save_started, (gpointer)fname);
4250 if (save_format == cf->cd_t && compressed == cf->iscompressed
4251 && !discard_comments && !cf->unsaved_changes) {
4252 /* We're saving in the format it's already in, and we're
4253 not discarding comments, and there are no changes we have
4254 in memory that aren't saved to the file, so we can just move
4255 or copy the raw data. */
4257 if (cf->is_tempfile) {
4258 /* The file being saved is a temporary file from a live
4259 capture, so it doesn't need to stay around under that name;
4260 first, try renaming the capture buffer file to the new name.
4261 This acts as a "safe save", in that, if the file already
4262 exists, the existing file will be removed only if the rename
4265 Sadly, on Windows, as we have the current capture file
4266 open, even MoveFileEx() with MOVEFILE_REPLACE_EXISTING
4267 (to cause the rename to remove an existing target), as
4268 done by ws_stdio_rename() (ws_rename() is #defined to
4269 be ws_stdio_rename() on Windows) will fail.
4271 According to the MSDN documentation for CreateFile(), if,
4272 when we open a capture file, we were to directly do a CreateFile(),
4273 opening with FILE_SHARE_DELETE|FILE_SHARE_READ, and then
4274 convert it to a file descriptor with _open_osfhandle(),
4275 that would allow the file to be renamed out from under us.
4277 However, that doesn't work in practice. Perhaps the problem
4278 is that the process doing the rename is the process that
4279 has the file open. */
4281 if (ws_rename(cf->filename, fname) == 0) {
4282 /* That succeeded - there's no need to copy the source file. */
4283 how_to_save = SAVE_WITH_MOVE;
4285 if (errno == EXDEV) {
4286 /* They're on different file systems, so we have to copy the
4288 how_to_save = SAVE_WITH_COPY;
4290 /* The rename failed, but not because they're on different
4291 file systems - put up an error message. (Or should we
4292 just punt and try to copy? The only reason why I'd
4293 expect the rename to fail and the copy to succeed would
4294 be if we didn't have permission to remove the file from
4295 the temporary directory, and that might be fixable - but
4296 is it worth requiring the user to go off and fix it?) */
4297 cf_rename_failure_alert_box(fname, errno);
4302 how_to_save = SAVE_WITH_COPY;
4305 /* It's a permanent file, so we should copy it, and not remove the
4307 how_to_save = SAVE_WITH_COPY;
4310 if (how_to_save == SAVE_WITH_COPY) {
4311 /* Copy the file, if we haven't moved it. If we're overwriting
4312 an existing file, we do it with a "safe save", by writing
4313 to a new file and, if the write succeeds, renaming the
4314 new file on top of the old file. */
4315 if (file_exists(fname)) {
4316 fname_new = g_strdup_printf("%s~", fname);
4317 if (!copy_file_binary_mode(cf->filename, fname_new))
4320 if (!copy_file_binary_mode(cf->filename, fname))
4325 /* Either we're saving in a different format or we're saving changes,
4326 such as added, modified, or removed comments, that haven't yet
4327 been written to the underlying file; we can't do that by copying
4328 or moving the capture file, we have to do it by writing the packets
4331 wtapng_section_t *shb_hdr = NULL;
4332 wtapng_iface_descriptions_t *idb_inf = NULL;
4335 shb_hdr = wtap_file_get_shb_info(cf->wth);
4336 idb_inf = wtap_file_get_idb_info(cf->wth);
4338 /* Determine what file encapsulation type we should use. */
4339 encap = wtap_dump_file_encap_type(cf->linktypes);
4341 if (file_exists(fname)) {
4342 /* We're overwriting an existing file; write out to a new file,
4343 and, if that succeeds, rename the new file on top of the
4344 old file. That makes this a "safe save", so that we don't
4345 lose the old file if we have a problem writing out the new
4346 file. (If the existing file is the current capture file,
4347 we *HAVE* to do that, otherwise we're overwriting the file
4348 from which we're reading the packets that we're writing!) */
4349 fname_new = g_strdup_printf("%s~", fname);
4350 pdh = wtap_dump_open_ng(fname_new, save_format, encap, cf->snap,
4351 compressed, shb_hdr, idb_inf, &err);
4353 pdh = wtap_dump_open_ng(fname, save_format, encap, cf->snap,
4354 compressed, shb_hdr, idb_inf, &err);
4360 cf_open_failure_alert_box(fname, err, NULL, TRUE, save_format);
4364 /* Add address resolution */
4365 wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list());
4367 /* Iterate through the list of packets, processing all the packets. */
4368 callback_args.pdh = pdh;
4369 callback_args.fname = fname;
4370 callback_args.file_type = save_format;
4371 switch (process_specified_packets(cf, NULL, "Saving", "packets",
4372 TRUE, save_packet, &callback_args)) {
4375 /* Completed successfully. */
4379 /* The user decided to abort the saving.
4380 If we're writing to a temporary file, remove it.
4381 XXX - should we do so even if we're not writing to a
4383 wtap_dump_close(pdh, &err);
4384 if (fname_new != NULL)
4385 ws_unlink(fname_new);
4386 cf_callback_invoke(cf_cb_file_save_stopped, NULL);
4387 return CF_WRITE_ABORTED;
4390 /* Error while saving.
4391 If we're writing to a temporary file, remove it. */
4392 if (fname_new != NULL)
4393 ws_unlink(fname_new);
4394 wtap_dump_close(pdh, &err);
4398 if (!wtap_dump_close(pdh, &err)) {
4399 cf_close_failure_alert_box(fname, err);
4403 how_to_save = SAVE_WITH_WTAP;
4406 if (fname_new != NULL) {
4407 /* We wrote out to fname_new, and should rename it on top of
4408 fname. fname_new is now closed, so that should be possible even
4409 on Windows. However, on Windows, we first need to close whatever
4410 file descriptors we have open for fname. */
4412 wtap_fdclose(cf->wth);
4414 /* Now do the rename. */
4415 if (ws_rename(fname_new, fname) == -1) {
4416 /* Well, the rename failed. */
4417 cf_rename_failure_alert_box(fname, errno);
4419 /* Attempt to reopen the random file descriptor using the
4420 current file's filename. (At this point, the sequential
4421 file descriptor is closed.) */
4422 if (!wtap_fdreopen(cf->wth, cf->filename, &err)) {
4423 /* Oh, well, we're screwed. */
4424 display_basename = g_filename_display_basename(cf->filename);
4425 simple_error_message_box(
4426 file_open_error_message(err, FALSE), display_basename);
4427 g_free(display_basename);
4434 cf_callback_invoke(cf_cb_file_save_finished, NULL);
4435 cf->unsaved_changes = FALSE;
4438 switch (how_to_save) {
4440 case SAVE_WITH_MOVE:
4441 /* We just moved the file, so the wtap structure refers to the
4442 new file, and all the information other than the filename
4443 and the "is temporary" status applies to the new file; just
4445 g_free(cf->filename);
4446 cf->filename = g_strdup(fname);
4447 cf->is_tempfile = FALSE;
4448 cf_callback_invoke(cf_cb_file_fast_save_finished, cf);
4451 case SAVE_WITH_COPY:
4452 /* We just copied the file, s all the information other than
4453 the wtap structure, the filename, and the "is temporary"
4454 status applies to the new file; just update that. */
4455 wtap_close(cf->wth);
4456 cf->wth = wtap_open_offline(fname, &err, &err_info, TRUE);
4457 if (cf->wth == NULL) {
4458 cf_open_failure_alert_box(fname, err, err_info, FALSE, 0);
4461 g_free(cf->filename);
4462 cf->filename = g_strdup(fname);
4463 cf->is_tempfile = FALSE;
4465 cf_callback_invoke(cf_cb_file_fast_save_finished, cf);
4468 case SAVE_WITH_WTAP:
4469 /* Open and read the file we saved to.
4471 XXX - this is somewhat of a waste; we already have the
4472 packets, all this gets us is updated file type information
4473 (which we could just stuff into "cf"), and having the new
4474 file be the one we have opened and from which we're reading
4475 the data, and it means we have to spend time opening and
4476 reading the file, which could be a significant amount of
4477 time if the file is large.
4479 If the capture-file-writing code were to return the
4480 seek offset of each packet it writes, we could save that
4481 in the frame_data structure for the frame, and just open
4482 the file without reading it again...
4484 ...as long as, for gzipped files, the process of writing
4485 out the file *also* generates the information needed to
4486 support fast random access to the compressed file. */
4487 if (rescan_file(cf, fname, FALSE, &err) != CF_READ_OK) {
4488 /* The rescan failed; just close the file. Either
4489 a dialog was popped up for the failure, so the
4490 user knows what happened, or they stopped the
4491 rescan, in which case they know what happened. */
4497 /* If we were told to discard the comments, do so. */
4498 if (discard_comments) {
4499 /* Remove SHB comment, if any. */
4500 wtap_write_shb_comment(cf->wth, NULL);
4502 /* Remove packet comments. */
4503 for (framenum = 1; framenum <= cf->count; framenum++) {
4504 fdata = frame_data_sequence_find(cf->frames, framenum);
4505 if (fdata->opt_comment) {
4506 g_free(fdata->opt_comment);
4507 fdata->opt_comment = NULL;
4508 cf->packet_comment_count--;
4516 if (fname_new != NULL) {
4517 /* We were trying to write to a temporary file; get rid of it if it
4518 exists. (We don't care whether this fails, as, if it fails,
4519 there's not much we can do about it. I guess if it failed for
4520 a reason other than "it doesn't exist", we could report an
4521 error, so the user knows there's a junk file that they might
4522 want to clean up.) */
4523 ws_unlink(fname_new);
4526 cf_callback_invoke(cf_cb_file_save_failed, NULL);
4527 return CF_WRITE_ERROR;
4531 cf_export_specified_packets(capture_file *cf, const char *fname,
4532 packet_range_t *range, guint save_format,
4533 gboolean compressed)
4535 gchar *fname_new = NULL;
4538 save_callback_args_t callback_args;
4539 wtapng_section_t *shb_hdr;
4540 wtapng_iface_descriptions_t *idb_inf;
4543 cf_callback_invoke(cf_cb_file_export_specified_packets_started, (gpointer)fname);
4545 packet_range_process_init(range);
4547 /* We're writing out specified packets from the specified capture
4548 file to another file. Even if all captured packets are to be
4549 written, don't special-case the operation - read each packet
4550 and then write it out if it's one of the specified ones. */
4552 shb_hdr = wtap_file_get_shb_info(cf->wth);
4553 idb_inf = wtap_file_get_idb_info(cf->wth);
4555 /* Determine what file encapsulation type we should use. */
4556 encap = wtap_dump_file_encap_type(cf->linktypes);
4558 if (file_exists(fname)) {
4559 /* We're overwriting an existing file; write out to a new file,
4560 and, if that succeeds, rename the new file on top of the
4561 old file. That makes this a "safe save", so that we don't
4562 lose the old file if we have a problem writing out the new
4563 file. (If the existing file is the current capture file,
4564 we *HAVE* to do that, otherwise we're overwriting the file
4565 from which we're reading the packets that we're writing!) */
4566 fname_new = g_strdup_printf("%s~", fname);
4567 pdh = wtap_dump_open_ng(fname_new, save_format, encap, cf->snap,
4568 compressed, shb_hdr, idb_inf, &err);
4570 pdh = wtap_dump_open_ng(fname, save_format, encap, cf->snap,
4571 compressed, shb_hdr, idb_inf, &err);
4577 cf_open_failure_alert_box(fname, err, NULL, TRUE, save_format);
4581 /* Add address resolution */
4582 wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list());
4584 /* Iterate through the list of packets, processing the packets we were
4587 XXX - we've already called "packet_range_process_init(range)", but
4588 "process_specified_packets()" will do it again. Fortunately,
4589 that's harmless in this case, as we haven't done anything to
4590 "range" since we initialized it. */
4591 callback_args.pdh = pdh;
4592 callback_args.fname = fname;
4593 callback_args.file_type = save_format;
4594 switch (process_specified_packets(cf, range, "Writing", "specified packets",
4595 TRUE, save_packet, &callback_args)) {
4598 /* Completed successfully. */
4602 /* The user decided to abort the saving.
4603 If we're writing to a temporary file, remove it.
4604 XXX - should we do so even if we're not writing to a
4606 wtap_dump_close(pdh, &err);
4607 if (fname_new != NULL)
4608 ws_unlink(fname_new);
4609 cf_callback_invoke(cf_cb_file_export_specified_packets_stopped, NULL);
4610 return CF_WRITE_ABORTED;
4614 /* Error while saving.
4615 If we're writing to a temporary file, remove it. */
4616 if (fname_new != NULL)
4617 ws_unlink(fname_new);
4618 wtap_dump_close(pdh, &err);
4622 if (!wtap_dump_close(pdh, &err)) {
4623 cf_close_failure_alert_box(fname, err);
4627 if (fname_new != NULL) {
4628 /* We wrote out to fname_new, and should rename it on top of
4629 fname; fname is now closed, so that should be possible even
4630 on Windows. Do the rename. */
4631 if (ws_rename(fname_new, fname) == -1) {
4632 /* Well, the rename failed. */
4633 cf_rename_failure_alert_box(fname, errno);
4638 cf_callback_invoke(cf_cb_file_export_specified_packets_finished, NULL);
4642 if (fname_new != NULL) {
4643 /* We were trying to write to a temporary file; get rid of it if it
4644 exists. (We don't care whether this fails, as, if it fails,
4645 there's not much we can do about it. I guess if it failed for
4646 a reason other than "it doesn't exist", we could report an
4647 error, so the user knows there's a junk file that they might
4648 want to clean up.) */
4649 ws_unlink(fname_new);
4652 cf_callback_invoke(cf_cb_file_export_specified_packets_failed, NULL);
4653 return CF_WRITE_ERROR;
4657 cf_open_failure_alert_box(const char *filename, int err, gchar *err_info,
4658 gboolean for_writing, int file_type)
4660 gchar *display_basename;
4663 /* Wiretap error. */
4664 display_basename = g_filename_display_basename(filename);
4667 case WTAP_ERR_NOT_REGULAR_FILE:
4668 simple_error_message_box(
4669 "The file \"%s\" is a \"special file\" or socket or other non-regular file.",
4673 case WTAP_ERR_RANDOM_OPEN_PIPE:
4674 /* Seen only when opening a capture file for reading. */
4675 simple_error_message_box(
4676 "The file \"%s\" is a pipe or FIFO; Wireshark can't read pipe or FIFO files.\n"
4677 "To capture from a pipe or FIFO use wireshark -i -",
4681 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
4682 /* Seen only when opening a capture file for reading. */
4683 simple_error_message_box(
4684 "The file \"%s\" isn't a capture file in a format Wireshark understands.",
4688 case WTAP_ERR_UNSUPPORTED:
4689 /* Seen only when opening a capture file for reading. */
4690 simple_error_message_box(
4691 "The file \"%s\" isn't a capture file in a format Wireshark understands.\n"
4693 display_basename, err_info);
4697 case WTAP_ERR_CANT_WRITE_TO_PIPE:
4698 /* Seen only when opening a capture file for writing. */
4699 simple_error_message_box(
4700 "The file \"%s\" is a pipe, and %s capture files can't be "
4701 "written to a pipe.",
4702 display_basename, wtap_file_type_string(file_type));
4705 case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
4706 /* Seen only when opening a capture file for writing. */
4707 simple_error_message_box(
4708 "Wireshark doesn't support writing capture files in that format.");
4711 case WTAP_ERR_UNSUPPORTED_ENCAP:
4713 simple_error_message_box("Wireshark can't save this capture in that format.");
4715 simple_error_message_box(
4716 "The file \"%s\" is a capture for a network type that Wireshark doesn't support.\n"
4718 display_basename, err_info);
4723 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
4725 simple_error_message_box(
4726 "Wireshark can't save this capture in that format.");
4728 simple_error_message_box(
4729 "The file \"%s\" is a capture for a network type that Wireshark doesn't support.",
4734 case WTAP_ERR_BAD_FILE:
4735 /* Seen only when opening a capture file for reading. */
4736 simple_error_message_box(
4737 "The file \"%s\" appears to be damaged or corrupt.\n"
4739 display_basename, err_info);
4743 case WTAP_ERR_CANT_OPEN:
4745 simple_error_message_box(
4746 "The file \"%s\" could not be created for some unknown reason.",
4749 simple_error_message_box(
4750 "The file \"%s\" could not be opened for some unknown reason.",
4755 case WTAP_ERR_SHORT_READ:
4756 simple_error_message_box(
4757 "The file \"%s\" appears to have been cut short"
4758 " in the middle of a packet or other data.",
4762 case WTAP_ERR_SHORT_WRITE:
4763 simple_error_message_box(
4764 "A full header couldn't be written to the file \"%s\".",
4768 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
4769 simple_error_message_box(
4770 "This file type cannot be written as a compressed file.");
4773 case WTAP_ERR_DECOMPRESS:
4774 simple_error_message_box(
4775 "The compressed file \"%s\" appears to be damaged or corrupt.\n"
4776 "(%s)", display_basename, err_info);
4781 simple_error_message_box(
4782 "The file \"%s\" could not be %s: %s.",
4784 for_writing ? "created" : "opened",
4785 wtap_strerror(err));
4788 g_free(display_basename);
4791 open_failure_alert_box(filename, err, for_writing);
4796 * XXX - whether we mention the source pathname, the target pathname,
4797 * or both depends on the error and on what we find if we look for
4798 * one or both of them.
4801 cf_rename_failure_alert_box(const char *filename, int err)
4803 gchar *display_basename;
4805 display_basename = g_filename_display_basename(filename);
4809 /* XXX - should check whether the source exists and, if not,
4810 report it as the problem and, if so, report the destination
4812 simple_error_message_box("The path to the file \"%s\" doesn't exist.",
4817 /* XXX - if we're doing a rename after a safe save, we should
4818 probably say something else. */
4819 simple_error_message_box("You don't have permission to move the capture file to \"%s\".",
4824 /* XXX - this should probably mention both the source and destination
4826 simple_error_message_box("The file \"%s\" could not be moved: %s.",
4827 display_basename, wtap_strerror(err));
4830 g_free(display_basename);
4833 /* Check for write errors - if the file is being written to an NFS server,
4834 a write error may not show up until the file is closed, as NFS clients
4835 might not send writes to the server until the "write()" call finishes,
4836 so that the write may fail on the server but the "write()" may succeed. */
4838 cf_close_failure_alert_box(const char *filename, int err)
4840 gchar *display_basename;
4843 /* Wiretap error. */
4844 display_basename = g_filename_display_basename(filename);
4847 case WTAP_ERR_CANT_CLOSE:
4848 simple_error_message_box(
4849 "The file \"%s\" couldn't be closed for some unknown reason.",
4853 case WTAP_ERR_SHORT_WRITE:
4854 simple_error_message_box(
4855 "Not all the packets could be written to the file \"%s\".",
4860 simple_error_message_box(
4861 "An error occurred while closing the file \"%s\": %s.",
4862 display_basename, wtap_strerror(err));
4865 g_free(display_basename);
4868 We assume that a close error from the OS is really a write error. */
4869 write_failure_alert_box(filename, err);
4873 /* Reload the current capture file. */
4875 cf_reload(capture_file *cf) {
4877 gboolean is_tempfile;
4880 /* If the file could be opened, "cf_open()" calls "cf_close()"
4881 to get rid of state for the old capture file before filling in state
4882 for the new capture file. "cf_close()" will remove the file if
4883 it's a temporary file; we don't want that to happen (for one thing,
4884 it'd prevent subsequent reopens from working). Remember whether it's
4885 a temporary file, mark it as not being a temporary file, and then
4886 reopen it as the type of file it was.
4888 Also, "cf_close()" will free "cf->filename", so we must make
4889 a copy of it first. */
4890 filename = g_strdup(cf->filename);
4891 is_tempfile = cf->is_tempfile;
4892 cf->is_tempfile = FALSE;
4893 if (cf_open(cf, filename, is_tempfile, &err) == CF_OK) {
4894 switch (cf_read(cf, TRUE)) {
4898 /* Just because we got an error, that doesn't mean we were unable
4899 to read any of the file; we handle what we could get from the
4903 case CF_READ_ABORTED:
4904 /* The user bailed out of re-reading the capture file; the
4905 capture file has been closed - just free the capture file name
4906 string and return (without changing the last containing
4912 /* The open failed, so "cf->is_tempfile" wasn't set to "is_tempfile".
4913 Instead, the file was left open, so we should restore "cf->is_tempfile"
4916 XXX - change the menu? Presumably "cf_open()" will do that;
4917 make sure it does! */
4918 cf->is_tempfile = is_tempfile;
4920 /* "cf_open()" made a copy of the file name we handed it, so
4921 we should free up our copy. */
4931 * indent-tabs-mode: nil
4934 * ex: set shiftwidth=2 tabstop=8 expandtab:
4935 * :indentSize=2:tabSize=8:noTabs=true: