4 * Wireshark - Network traffic analyzer
5 * By Gerald Combs <gerald@wireshark.org>
6 * Copyright 1998 Gerald Combs
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version 2
11 * of the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
41 #include <wsutil/tempfile.h>
42 #include <wsutil/file_util.h>
43 #include <wsutil/filesystem.h>
44 #include <wsutil/ws_version_info.h>
46 #include <wiretap/merge.h>
48 #include <epan/exceptions.h>
49 #include <epan/epan-int.h>
50 #include <epan/epan.h>
51 #include <epan/column.h>
52 #include <epan/packet.h>
53 #include <epan/column-utils.h>
54 #include <epan/expert.h>
55 #include <epan/prefs.h>
56 #include <epan/dfilter/dfilter.h>
57 #include <epan/epan_dissect.h>
59 #include <epan/dissectors/packet-ber.h>
60 #include <epan/timestamp.h>
61 #include <epan/dfilter/dfilter-macro.h>
62 #include <epan/strutil.h>
63 #include <epan/addr_resolv.h>
66 #include "color_filters.h"
70 #include "frame_tvbuff.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"
78 /* Needed for addrinfo */
79 #ifdef HAVE_SYS_TYPES_H
80 # include <sys/types.h>
83 #ifdef HAVE_SYS_SOCKET_H
84 #include <sys/socket.h>
87 #ifdef HAVE_NETINET_IN_H
88 # include <netinet/in.h>
95 #ifdef HAVE_WINSOCK2_H
96 # include <winsock2.h>
99 #if defined(_WIN32) && defined(INET6)
100 # include <ws2tcpip.h>
104 gboolean auto_scroll_live; /* GTK+ only? */
107 static int read_packet(capture_file *cf, dfilter_t *dfcode, epan_dissect_t *edt,
108 column_info *cinfo, gint64 offset);
110 static void rescan_packets(capture_file *cf, const char *action, const char *action_item, gboolean redissect);
117 static match_result match_protocol_tree(capture_file *cf, frame_data *fdata,
119 static void match_subtree_text(proto_node *node, gpointer data);
120 static match_result match_summary_line(capture_file *cf, frame_data *fdata,
122 static match_result match_narrow_and_wide(capture_file *cf, frame_data *fdata,
124 static match_result match_narrow(capture_file *cf, frame_data *fdata,
126 static match_result match_wide(capture_file *cf, frame_data *fdata,
128 static match_result match_binary(capture_file *cf, frame_data *fdata,
130 static match_result match_dfilter(capture_file *cf, frame_data *fdata,
132 static match_result match_marked(capture_file *cf, frame_data *fdata,
134 static match_result match_time_reference(capture_file *cf, frame_data *fdata,
136 static gboolean find_packet(capture_file *cf,
137 match_result (*match_function)(capture_file *, frame_data *, void *),
138 void *criterion, search_direction dir);
140 static const char *cf_get_user_packet_comment(capture_file *cf, const frame_data *fd);
142 static void cf_open_failure_alert_box(const char *filename, int err,
143 gchar *err_info, gboolean for_writing,
145 static void cf_rename_failure_alert_box(const char *filename, int err);
146 static void cf_close_failure_alert_box(const char *filename, int err);
147 static void ref_time_packets(capture_file *cf);
148 /* Update the progress bar this many times when reading a file. */
149 #define N_PROGBAR_UPDATES 100
150 /* We read around 200k/100ms don't update the progress bar more often than that */
151 #define MIN_QUANTUM 200000
152 #define MIN_NUMBER_OF_PACKET 1500
155 * We could probably use g_signal_...() instead of the callbacks below but that
156 * would require linking our CLI programs to libgobject and creating an object
157 * instance for the signals.
160 cf_callback_t cb_fct;
162 } cf_callback_data_t;
164 static GList *cf_callbacks = NULL;
167 cf_callback_invoke(int event, gpointer data)
169 cf_callback_data_t *cb;
170 GList *cb_item = cf_callbacks;
172 /* there should be at least one interested */
173 g_assert(cb_item != NULL);
175 while (cb_item != NULL) {
176 cb = (cf_callback_data_t *)cb_item->data;
177 cb->cb_fct(event, data, cb->user_data);
178 cb_item = g_list_next(cb_item);
184 cf_callback_add(cf_callback_t func, gpointer user_data)
186 cf_callback_data_t *cb;
188 cb = g_new(cf_callback_data_t,1);
190 cb->user_data = user_data;
192 cf_callbacks = g_list_prepend(cf_callbacks, cb);
196 cf_callback_remove(cf_callback_t func, gpointer user_data)
198 cf_callback_data_t *cb;
199 GList *cb_item = cf_callbacks;
201 while (cb_item != NULL) {
202 cb = (cf_callback_data_t *)cb_item->data;
203 if (cb->cb_fct == func && cb->user_data == user_data) {
204 cf_callbacks = g_list_remove(cf_callbacks, cb);
208 cb_item = g_list_next(cb_item);
211 g_assert_not_reached();
215 cf_timestamp_auto_precision(capture_file *cf)
219 /* don't try to get the file's precision if none is opened */
220 if (cf->state == FILE_CLOSED) {
224 /* Set the column widths of those columns that show the time in
225 "command-line-specified" format. */
226 for (i = 0; i < cf->cinfo.num_cols; i++) {
227 if (col_has_time_fmt(&cf->cinfo, i)) {
228 packet_list_resize_column(i);
234 cf_get_computed_elapsed(capture_file *cf)
236 return cf->computed_elapsed;
240 * GLIB_CHECK_VERSION(2,28,0) adds g_get_real_time which could minimize or
243 static void compute_elapsed(capture_file *cf, GTimeVal *start_time)
248 g_get_current_time(&time_now);
250 delta_time = (time_now.tv_sec - start_time->tv_sec) * 1e6 +
251 time_now.tv_usec - start_time->tv_usec;
253 cf->computed_elapsed = (gulong) (delta_time / 1000); /* ms */
256 static const nstime_t *
257 ws_get_frame_ts(void *data, guint32 frame_num)
259 capture_file *cf = (capture_file *) data;
261 if (cf->prev_dis && cf->prev_dis->num == frame_num)
262 return &cf->prev_dis->abs_ts;
264 if (cf->prev_cap && cf->prev_cap->num == frame_num)
265 return &cf->prev_cap->abs_ts;
268 frame_data *fd = frame_data_sequence_find(cf->frames, frame_num);
270 return (fd) ? &fd->abs_ts : NULL;
277 ws_get_user_comment(void *data, const frame_data *fd)
279 capture_file *cf = (capture_file *) data;
281 return cf_get_user_packet_comment(cf, fd);
285 ws_epan_new(capture_file *cf)
287 epan_t *epan = epan_new();
290 epan->get_frame_ts = ws_get_frame_ts;
291 epan->get_interface_name = cap_file_get_interface_name;
292 epan->get_user_comment = ws_get_user_comment;
298 cf_open(capture_file *cf, const char *fname, unsigned int type, gboolean is_tempfile, int *err)
303 wth = wtap_open_offline(fname, type, err, &err_info, TRUE);
307 /* The open succeeded. Close whatever capture file we had open,
308 and fill in the information for this file. */
311 /* Initialize the packet header. */
312 wtap_phdr_init(&cf->phdr);
314 /* XXX - we really want to initialize this after we've read all
315 the packets, so we know how much we'll ultimately need. */
316 ws_buffer_init(&cf->buf, 1500);
318 /* Create new epan session for dissection.
319 * (The old one was freed in cf_close().)
321 cf->epan = ws_epan_new(cf);
323 /* We're about to start reading the file. */
324 cf->state = FILE_READ_IN_PROGRESS;
329 /* Set the file name because we need it to set the follow stream filter.
330 XXX - is that still true? We need it for other reasons, though,
332 cf->filename = g_strdup(fname);
334 /* Indicate whether it's a permanent or temporary file. */
335 cf->is_tempfile = is_tempfile;
337 /* No user changes yet. */
338 cf->unsaved_changes = FALSE;
340 cf->computed_elapsed = 0;
342 cf->cd_t = wtap_file_type_subtype(cf->wth);
343 cf->open_type = type;
344 cf->linktypes = g_array_sized_new(FALSE, FALSE, (guint) sizeof(int), 1);
346 cf->packet_comment_count = 0;
347 cf->displayed_count = 0;
348 cf->marked_count = 0;
349 cf->ignored_count = 0;
350 cf->ref_time_count = 0;
351 cf->drops_known = FALSE;
353 cf->snap = wtap_snapshot_length(cf->wth);
355 /* Snapshot length not known. */
356 cf->has_snap = FALSE;
357 cf->snap = WTAP_MAX_PACKET_SIZE;
361 /* Allocate a frame_data_sequence for the frames in this file */
362 cf->frames = new_frame_data_sequence();
364 nstime_set_zero(&cf->elapsed_time);
370 /* Adjust timestamp precision if auto is selected, col width will be adjusted */
371 cf_timestamp_auto_precision(cf);
373 packet_list_queue_draw();
374 cf_callback_invoke(cf_cb_file_opened, cf);
376 if (cf->cd_t == WTAP_FILE_TYPE_SUBTYPE_BER) {
377 /* tell the BER dissector the file name */
378 ber_set_filename(cf->filename);
381 wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
382 wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
387 cf_open_failure_alert_box(fname, *err, err_info, FALSE, 0);
392 * Add an encapsulation type to cf->linktypes.
395 cf_add_encapsulation_type(capture_file *cf, int encap)
399 for (i = 0; i < cf->linktypes->len; i++) {
400 if (g_array_index(cf->linktypes, gint, i) == encap)
401 return; /* it's already there */
403 /* It's not already there - add it. */
404 g_array_append_val(cf->linktypes, encap);
407 /* Reset everything to a pristine state */
409 cf_close(capture_file *cf)
411 if (cf->state == FILE_CLOSED)
412 return; /* Nothing to do */
414 /* Die if we're in the middle of reading a file. */
415 g_assert(cf->state != FILE_READ_IN_PROGRESS);
417 cf_callback_invoke(cf_cb_file_closing, cf);
419 /* close things, if not already closed before */
420 color_filters_cleanup();
426 /* We have no file open... */
427 if (cf->filename != NULL) {
428 /* If it's a temporary file, remove it. */
430 ws_unlink(cf->filename);
431 g_free(cf->filename);
434 /* ...which means we have no changes to that file to save. */
435 cf->unsaved_changes = FALSE;
437 /* no open_routine type */
438 cf->open_type = WTAP_TYPE_AUTO;
440 /* Clean up the packet header. */
441 wtap_phdr_cleanup(&cf->phdr);
443 /* Free up the packet buffer. */
444 ws_buffer_free(&cf->buf);
446 dfilter_free(cf->rfcode);
448 if (cf->frames != NULL) {
449 free_frame_data_sequence(cf->frames);
452 #ifdef WANT_PACKET_EDITOR
453 if (cf->edited_frames) {
454 g_tree_destroy(cf->edited_frames);
455 cf->edited_frames = NULL;
458 if (cf->frames_user_comments) {
459 g_tree_destroy(cf->frames_user_comments);
460 cf->frames_user_comments = NULL;
462 cf_unselect_packet(cf); /* nothing to select */
463 cf->first_displayed = 0;
464 cf->last_displayed = 0;
466 /* No frames, no frame selected, no field in that frame selected. */
468 cf->current_frame = 0;
470 cf->finfo_selected = NULL;
472 /* No frame link-layer types, either. */
473 if (cf->linktypes != NULL) {
474 g_array_free(cf->linktypes, TRUE);
475 cf->linktypes = NULL;
478 /* Clear the packet list. */
479 packet_list_freeze();
484 nstime_set_zero(&cf->elapsed_time);
486 reset_tap_listeners();
491 /* We have no file open. */
492 cf->state = FILE_CLOSED;
494 cf_callback_invoke(cf_cb_file_closed, cf);
498 calc_progbar_val(capture_file *cf, gint64 size, gint64 file_pos, gchar *status_str, gulong status_size)
502 progbar_val = (gfloat) file_pos / (gfloat) size;
503 if (progbar_val > 1.0) {
505 /* The file probably grew while we were reading it.
506 * Update file size, and try again.
508 size = wtap_file_size(cf->wth, NULL);
511 progbar_val = (gfloat) file_pos / (gfloat) size;
513 /* If it's still > 1, either "wtap_file_size()" failed (in which
514 * case there's not much we can do about it), or the file
515 * *shrank* (in which case there's not much we can do about
516 * it); just clip the progress value at 1.0.
518 if (progbar_val > 1.0f)
522 g_snprintf(status_str, status_size,
523 "%" G_GINT64_MODIFIER "dKB of %" G_GINT64_MODIFIER "dKB",
524 file_pos / 1024, size / 1024);
530 cf_read(capture_file *cf, gboolean reloading)
535 progdlg_t *progbar = NULL;
540 volatile gboolean create_proto_tree;
544 /* Compile the current display filter.
545 * We assume this will not fail since cf->dfilter is only set in
546 * cf_filter IFF the filter was valid.
548 compiled = dfilter_compile(cf->dfilter, &dfcode, NULL);
549 g_assert(!cf->dfilter || (compiled && dfcode));
551 /* Get the union of the flags for all tap listeners. */
552 tap_flags = union_of_tap_listener_flags();
554 (dfcode != NULL || have_filtering_tap_listeners() || (tap_flags & TL_REQUIRES_PROTO_TREE));
556 reset_tap_listeners();
558 name_ptr = g_filename_display_basename(cf->filename);
561 cf_callback_invoke(cf_cb_file_reload_started, cf);
563 cf_callback_invoke(cf_cb_file_read_started, cf);
565 /* Record whether the file is compressed.
566 XXX - do we know this at open time? */
567 cf->iscompressed = wtap_iscompressed(cf->wth);
569 /* The packet list window will be empty until the file is completly loaded */
570 packet_list_freeze();
573 g_get_current_time(&start_time);
575 epan_dissect_init(&edt, cf->epan, create_proto_tree, FALSE);
579 int displayed_once = 0;
587 gint64 progbar_quantum;
588 gint64 progbar_nextstep;
590 gchar status_str[100];
594 cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
596 /* Find the size of the file. */
597 size = wtap_file_size(cf->wth, NULL);
599 /* Update the progress bar when it gets to this value. */
600 progbar_nextstep = 0;
601 /* When we reach the value that triggers a progress bar update,
602 bump that value by this amount. */
604 progbar_quantum = size/N_PROGBAR_UPDATES;
605 if (progbar_quantum < MIN_QUANTUM)
606 progbar_quantum = MIN_QUANTUM;
610 while ((wtap_read(cf->wth, &err, &err_info, &data_offset))) {
613 file_pos = wtap_read_so_far(cf->wth);
615 /* Create the progress bar if necessary.
616 * Check whether it should be created or not every MIN_NUMBER_OF_PACKET
618 if ((progbar == NULL) && !(count % MIN_NUMBER_OF_PACKET)) {
619 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
621 progbar = delayed_create_progress_dlg(cf->window, "Reloading", name_ptr,
622 TRUE, &stop_flag, &start_time, progbar_val);
624 progbar = delayed_create_progress_dlg(cf->window, "Loading", name_ptr,
625 TRUE, &stop_flag, &start_time, progbar_val);
628 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
629 when we update it, we have to run the GTK+ main loop to get it
630 to repaint what's pending, and doing so may involve an "ioctl()"
631 to see if there's any pending input from an X server, and doing
632 that for every packet can be costly, especially on a big file. */
633 if (file_pos >= progbar_nextstep) {
634 if (progbar != NULL) {
635 progbar_val = calc_progbar_val(cf, size, file_pos, status_str, sizeof(status_str));
636 /* update the packet bar content on the first run or frequently on very large files */
638 if (progbar_quantum > 500000 || displayed_once == 0) {
639 if ((auto_scroll_live || displayed_once == 0 || cf->displayed_count < 1000) && cf->count != 0) {
641 packets_bar_update();
644 #endif /* HAVE_LIBPCAP */
645 update_progress_dlg(progbar, progbar_val, status_str);
647 progbar_nextstep += progbar_quantum;
652 /* Well, the user decided to abort the read. He/She will be warned and
653 it might be enough for him/her to work with the already loaded
655 This is especially true for very large capture files, where you don't
656 want to wait loading the whole file (which may last minutes or even
657 hours even on fast machines) just to see that it was the wrong file. */
660 read_packet(cf, dfcode, &edt, cinfo, data_offset);
663 CATCH(OutOfMemoryError) {
664 simple_message_box(ESD_TYPE_ERROR, NULL,
665 "More information and workarounds can be found at\n"
666 "https://wiki.wireshark.org/KnownBugs/OutOfMemory",
667 "Sorry, but Wireshark has run out of memory and has to terminate now.");
669 /* Could we close the current capture and free up memory from that? */
671 /* we have to terminate, as we cannot recover from the memory error */
677 /* Free the display name */
680 /* Cleanup and release all dfilter resources */
681 if (dfcode != NULL) {
682 dfilter_free(dfcode);
685 epan_dissect_cleanup(&edt);
687 /* We're done reading the file; destroy the progress bar if it was created. */
689 destroy_progress_dlg(progbar);
691 /* We're done reading sequentially through the file. */
692 cf->state = FILE_READ_DONE;
694 /* Close the sequential I/O side, to free up memory it requires. */
695 wtap_sequential_close(cf->wth);
697 /* Allow the protocol dissectors to free up memory that they
698 * don't need after the sequential run-through of the packets. */
699 postseq_cleanup_all_protocols();
701 /* compute the time it took to load the file */
702 compute_elapsed(cf, &start_time);
704 /* Set the file encapsulation type now; we don't know what it is until
705 we've looked at all the packets, as we don't know until then whether
706 there's more than one type (and thus whether it's
707 WTAP_ENCAP_PER_PACKET). */
708 cf->lnk_t = wtap_file_encap(cf->wth);
710 cf->current_frame = frame_data_sequence_find(cf->frames, cf->first_displayed);
715 cf_callback_invoke(cf_cb_file_reload_finished, cf);
717 cf_callback_invoke(cf_cb_file_read_finished, cf);
719 /* If we have any displayed packets to select, select the first of those
720 packets by making the first row the selected row. */
721 if (cf->first_displayed != 0) {
722 packet_list_select_first_row();
726 simple_message_box(ESD_TYPE_WARN, NULL,
727 "The remaining packets in the file were discarded.\n"
729 "As a lot of packets from the original file will be missing,\n"
730 "remember to be careful when saving the current content to a file.\n",
731 "File loading was cancelled.");
732 return CF_READ_ERROR;
736 /* Put up a message box noting that the read failed somewhere along
737 the line. Don't throw out the stuff we managed to read, though,
741 case WTAP_ERR_UNSUPPORTED:
742 simple_error_message_box(
743 "The capture file contains record data that Wireshark doesn't support.\n(%s)",
744 err_info != NULL ? err_info : "no information supplied");
748 case WTAP_ERR_SHORT_READ:
749 simple_error_message_box(
750 "The capture file appears to have been cut short"
751 " in the middle of a packet.");
754 case WTAP_ERR_BAD_FILE:
755 simple_error_message_box(
756 "The capture file appears to be damaged or corrupt.\n(%s)",
757 err_info != NULL ? err_info : "no information supplied");
761 case WTAP_ERR_DECOMPRESS:
762 simple_error_message_box(
763 "The compressed capture file appears to be damaged or corrupt.\n",
764 err_info != NULL ? err_info : "no information supplied");
769 simple_error_message_box(
770 "An error occurred while reading the"
771 " capture file: %s.", wtap_strerror(err));
774 return CF_READ_ERROR;
781 cf_continue_tail(capture_file *cf, volatile int to_read, int *err)
784 volatile int newly_displayed_packets = 0;
787 gboolean create_proto_tree;
791 /* Compile the current display filter.
792 * We assume this will not fail since cf->dfilter is only set in
793 * cf_filter IFF the filter was valid.
795 compiled = dfilter_compile(cf->dfilter, &dfcode, NULL);
796 g_assert(!cf->dfilter || (compiled && dfcode));
798 /* Get the union of the flags for all tap listeners. */
799 tap_flags = union_of_tap_listener_flags();
801 (dfcode != NULL || have_filtering_tap_listeners() || (tap_flags & TL_REQUIRES_PROTO_TREE));
805 packet_list_check_end();
806 /* Don't freeze/thaw the list when doing live capture */
807 /*packet_list_freeze();*/
809 /*g_log(NULL, G_LOG_LEVEL_MESSAGE, "cf_continue_tail: %u new: %u", cf->count, to_read);*/
811 epan_dissect_init(&edt, cf->epan, create_proto_tree, FALSE);
814 gint64 data_offset = 0;
817 cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
819 while (to_read != 0) {
820 wtap_cleareof(cf->wth);
821 if (!wtap_read(cf->wth, err, &err_info, &data_offset)) {
824 if (cf->state == FILE_READ_ABORTED) {
825 /* Well, the user decided to exit Wireshark. Break out of the
826 loop, and let the code below (which is called even if there
827 aren't any packets left to read) exit. */
830 if (read_packet(cf, dfcode, &edt, (column_info *) cinfo, data_offset) != -1) {
831 newly_displayed_packets++;
836 CATCH(OutOfMemoryError) {
837 simple_message_box(ESD_TYPE_ERROR, NULL,
838 "More information and workarounds can be found at\n"
839 "https://wiki.wireshark.org/KnownBugs/OutOfMemory",
840 "Sorry, but Wireshark has run out of memory and has to terminate now.");
842 /* Could we close the current capture and free up memory from that? */
843 return CF_READ_ABORTED;
845 /* we have to terminate, as we cannot recover from the memory error */
851 /* Update the file encapsulation; it might have changed based on the
852 packets we've read. */
853 cf->lnk_t = wtap_file_encap(cf->wth);
855 /* Cleanup and release all dfilter resources */
856 if (dfcode != NULL) {
857 dfilter_free(dfcode);
860 epan_dissect_cleanup(&edt);
862 /*g_log(NULL, G_LOG_LEVEL_MESSAGE, "cf_continue_tail: count %u state: %u err: %u",
863 cf->count, cf->state, *err);*/
865 /* Don't freeze/thaw the list when doing live capture */
866 /*packet_list_thaw();*/
867 /* With the new packet list the first packet
868 * isn't automatically selected.
870 if (!cf->current_frame)
871 packet_list_select_first_row();
873 /* moving to the end of the packet list - if the user requested so and
874 we have some new packets. */
875 if (newly_displayed_packets && auto_scroll_live && cf->count != 0)
876 packet_list_moveto_end();
878 if (cf->state == FILE_READ_ABORTED) {
879 /* Well, the user decided to exit Wireshark. Return CF_READ_ABORTED
880 so that our caller can kill off the capture child process;
881 this will cause an EOF on the pipe from the child, so
882 "cf_finish_tail()" will be called, and it will clean up
884 return CF_READ_ABORTED;
885 } else if (*err != 0) {
886 /* We got an error reading the capture file.
887 XXX - pop up a dialog box instead? */
888 if (err_info != NULL) {
889 g_warning("Error \"%s\" while reading \"%s\" (\"%s\")",
890 wtap_strerror(*err), cf->filename, err_info);
893 g_warning("Error \"%s\" while reading \"%s\"",
894 wtap_strerror(*err), cf->filename);
896 return CF_READ_ERROR;
902 cf_fake_continue_tail(capture_file *cf) {
903 cf->state = FILE_READ_DONE;
907 cf_finish_tail(capture_file *cf, int *err)
914 gboolean create_proto_tree;
918 /* Compile the current display filter.
919 * We assume this will not fail since cf->dfilter is only set in
920 * cf_filter IFF the filter was valid.
922 compiled = dfilter_compile(cf->dfilter, &dfcode, NULL);
923 g_assert(!cf->dfilter || (compiled && dfcode));
925 /* Get the union of the flags for all tap listeners. */
926 tap_flags = union_of_tap_listener_flags();
927 cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
929 (dfcode != NULL || have_filtering_tap_listeners() || (tap_flags & TL_REQUIRES_PROTO_TREE));
931 if (cf->wth == NULL) {
933 return CF_READ_ERROR;
936 packet_list_check_end();
937 /* Don't freeze/thaw the list when doing live capture */
938 /*packet_list_freeze();*/
940 epan_dissect_init(&edt, cf->epan, create_proto_tree, FALSE);
942 while ((wtap_read(cf->wth, err, &err_info, &data_offset))) {
943 if (cf->state == FILE_READ_ABORTED) {
944 /* Well, the user decided to abort the read. Break out of the
945 loop, and let the code below (which is called even if there
946 aren't any packets left to read) exit. */
949 read_packet(cf, dfcode, &edt, cinfo, data_offset);
952 /* Cleanup and release all dfilter resources */
953 if (dfcode != NULL) {
954 dfilter_free(dfcode);
957 epan_dissect_cleanup(&edt);
959 /* Don't freeze/thaw the list when doing live capture */
960 /*packet_list_thaw();*/
962 if (cf->state == FILE_READ_ABORTED) {
963 /* Well, the user decided to abort the read. We're only called
964 when the child capture process closes the pipe to us (meaning
965 it's probably exited), so we can just close the capture
966 file; we return CF_READ_ABORTED so our caller can do whatever
967 is appropriate when that happens. */
969 return CF_READ_ABORTED;
972 if (auto_scroll_live && cf->count != 0)
973 packet_list_moveto_end();
975 /* We're done reading sequentially through the file. */
976 cf->state = FILE_READ_DONE;
978 /* We're done reading sequentially through the file; close the
979 sequential I/O side, to free up memory it requires. */
980 wtap_sequential_close(cf->wth);
982 /* Allow the protocol dissectors to free up memory that they
983 * don't need after the sequential run-through of the packets. */
984 postseq_cleanup_all_protocols();
986 /* Update the file encapsulation; it might have changed based on the
987 packets we've read. */
988 cf->lnk_t = wtap_file_encap(cf->wth);
990 /* Update the details in the file-set dialog, as the capture file
991 * has likely grown since we first stat-ed it */
992 fileset_update_file(cf->filename);
995 /* We got an error reading the capture file.
996 XXX - pop up a dialog box? */
997 if (err_info != NULL) {
998 g_warning("Error \"%s\" while reading \"%s\" (\"%s\")",
999 wtap_strerror(*err), cf->filename, err_info);
1002 g_warning("Error \"%s\" while reading \"%s\"",
1003 wtap_strerror(*err), cf->filename);
1005 return CF_READ_ERROR;
1010 #endif /* HAVE_LIBPCAP */
1013 cf_get_display_name(capture_file *cf)
1017 /* Return a name to use in displays */
1018 if (!cf->is_tempfile) {
1019 /* Get the last component of the file name, and use that. */
1021 displayname = g_filename_display_basename(cf->filename);
1023 displayname=g_strdup("(No file)");
1026 /* The file we read is a temporary file from a live capture or
1027 a merge operation; we don't mention its name, but, if it's
1028 from a capture, give the source of the capture. */
1030 displayname = g_strdup(cf->source);
1032 displayname = g_strdup("(Untitled)");
1038 void cf_set_tempfile_source(capture_file *cf, gchar *source) {
1044 cf->source = g_strdup(source);
1046 cf->source = g_strdup("");
1050 const gchar *cf_get_tempfile_source(capture_file *cf) {
1058 /* XXX - use a macro instead? */
1060 cf_get_packet_count(capture_file *cf)
1065 /* XXX - use a macro instead? */
1067 cf_is_tempfile(capture_file *cf)
1069 return cf->is_tempfile;
1072 void cf_set_tempfile(capture_file *cf, gboolean is_tempfile)
1074 cf->is_tempfile = is_tempfile;
1078 /* XXX - use a macro instead? */
1079 void cf_set_drops_known(capture_file *cf, gboolean drops_known)
1081 cf->drops_known = drops_known;
1084 /* XXX - use a macro instead? */
1085 void cf_set_drops(capture_file *cf, guint32 drops)
1090 /* XXX - use a macro instead? */
1091 gboolean cf_get_drops_known(capture_file *cf)
1093 return cf->drops_known;
1096 /* XXX - use a macro instead? */
1097 guint32 cf_get_drops(capture_file *cf)
1102 void cf_set_rfcode(capture_file *cf, dfilter_t *rfcode)
1104 cf->rfcode = rfcode;
1108 add_packet_to_packet_list(frame_data *fdata, capture_file *cf,
1109 epan_dissect_t *edt, dfilter_t *dfcode, column_info *cinfo,
1110 struct wtap_pkthdr *phdr, const guint8 *buf, gboolean add_to_packet_list)
1114 frame_data_set_before_dissect(fdata, &cf->elapsed_time,
1115 &cf->ref, cf->prev_dis);
1116 cf->prev_cap = fdata;
1118 if (dfcode != NULL) {
1119 epan_dissect_prime_dfilter(edt, dfcode);
1122 /* Dissect the frame. */
1123 epan_dissect_run_with_taps(edt, cf->cd_t, phdr, frame_tvbuff_new(fdata, buf), fdata, cinfo);
1125 /* If we don't have a display filter, set "passed_dfilter" to 1. */
1126 if (dfcode != NULL) {
1127 fdata->flags.passed_dfilter = dfilter_apply_edt(dfcode, edt) ? 1 : 0;
1129 if (fdata->flags.passed_dfilter) {
1130 /* This frame passed the display filter but it may depend on other
1131 * (potentially not displayed) frames. Find those frames and mark them
1134 g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf->frames);
1137 fdata->flags.passed_dfilter = 1;
1139 if (fdata->flags.passed_dfilter || fdata->flags.ref_time)
1140 cf->displayed_count++;
1142 if (add_to_packet_list) {
1143 /* We fill the needed columns from new_packet_list */
1144 row = packet_list_append(cinfo, fdata);
1147 if (fdata->flags.passed_dfilter || fdata->flags.ref_time)
1149 frame_data_set_after_dissect(fdata, &cf->cum_bytes);
1150 cf->prev_dis = fdata;
1152 /* If we haven't yet seen the first frame, this is it.
1154 XXX - we must do this before we add the row to the display,
1155 as, if the display's GtkCList's selection mode is
1156 GTK_SELECTION_BROWSE, when the first entry is added to it,
1157 "cf_select_packet()" will be called, and it will fetch the row
1158 data for the 0th row, and will get a null pointer rather than
1159 "fdata", as "gtk_clist_append()" won't yet have returned and
1160 thus "gtk_clist_set_row_data()" won't yet have been called.
1162 We thus need to leave behind bread crumbs so that
1163 "cf_select_packet()" can find this frame. See the comment
1164 in "cf_select_packet()". */
1165 if (cf->first_displayed == 0)
1166 cf->first_displayed = fdata->num;
1168 /* This is the last frame we've seen so far. */
1169 cf->last_displayed = fdata->num;
1172 epan_dissect_reset(edt);
1176 /* read in a new packet */
1177 /* returns the row of the new packet in the packet list or -1 if not displayed */
1179 read_packet(capture_file *cf, dfilter_t *dfcode, epan_dissect_t *edt,
1180 column_info *cinfo, gint64 offset)
1182 struct wtap_pkthdr *phdr = wtap_phdr(cf->wth);
1183 const guint8 *buf = wtap_buf_ptr(cf->wth);
1190 /* Add this packet's link-layer encapsulation type to cf->linktypes, if
1191 it's not already there.
1192 XXX - yes, this is O(N), so if every packet had a different
1193 link-layer encapsulation type, it'd be O(N^2) to read the file, but
1194 there are probably going to be a small number of encapsulation types
1196 cf_add_encapsulation_type(cf, phdr->pkt_encap);
1198 /* The frame number of this packet is one more than the count of
1199 frames in the file so far. */
1200 framenum = cf->count + 1;
1202 frame_data_init(&fdlocal, framenum, phdr, offset, cf->cum_bytes);
1206 epan_dissect_t rf_edt;
1208 epan_dissect_init(&rf_edt, cf->epan, TRUE, FALSE);
1209 epan_dissect_prime_dfilter(&rf_edt, cf->rfcode);
1210 epan_dissect_run(&rf_edt, cf->cd_t, phdr, frame_tvbuff_new(&fdlocal, buf), &fdlocal, NULL);
1211 passed = dfilter_apply_edt(cf->rfcode, &rf_edt);
1212 epan_dissect_cleanup(&rf_edt);
1216 /* This does a shallow copy of fdlocal, which is good enough. */
1217 fdata = frame_data_sequence_add(cf->frames, &fdlocal);
1220 if (phdr->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, edt, dfcode,
1226 cinfo, phdr, buf, TRUE);
1234 cf_merge_files(char **out_filenamep, int in_file_count,
1235 char *const *in_filenames, int file_type, gboolean do_append)
1237 merge_in_file_t *in_files, *in_file;
1242 int open_err, read_err, write_err, close_err;
1243 gchar *err_info, *write_err_info = NULL;
1246 gboolean got_read_error = FALSE, got_write_error = FALSE;
1248 progdlg_t *progbar = NULL;
1250 gint64 f_len, file_pos;
1252 GTimeVal start_time;
1253 gchar status_str[100];
1254 gint64 progbar_nextstep;
1255 gint64 progbar_quantum;
1256 gchar *display_basename;
1257 int selected_frame_type;
1258 gboolean fake_interface_ids = FALSE;
1260 /* open the input files */
1261 if (!merge_open_in_files(in_file_count, in_filenames, &in_files,
1262 &open_err, &err_info, &err_fileno)) {
1264 cf_open_failure_alert_box(in_filenames[err_fileno], open_err, err_info,
1269 if (*out_filenamep != NULL) {
1270 out_filename = *out_filenamep;
1271 out_fd = ws_open(out_filename, O_CREAT|O_TRUNC|O_BINARY, 0600);
1275 out_fd = create_tempfile(&tmpname, "wireshark");
1278 out_filename = g_strdup(tmpname);
1279 *out_filenamep = out_filename;
1283 merge_close_in_files(in_file_count, in_files);
1285 cf_open_failure_alert_box(out_filename, open_err, NULL, TRUE, file_type);
1289 selected_frame_type = merge_select_frame_type(in_file_count, in_files);
1291 /* If we are trying to merge a number of libpcap files with different encapsulation types
1292 * change the output file type to pcapng and create SHB and IDB:s for the new file use the
1293 * interface index stored in in_files per file to change the phdr before writing the datablock.
1294 * XXX should it be an option to convert to pcapng?
1296 * We need something similar when merging pcapng files possibly with an option to say
1297 * the same interface(s) used in all in files. SHBs comments should be merged together.
1299 if ((selected_frame_type == WTAP_ENCAP_PER_PACKET)&&(file_type == WTAP_FILE_TYPE_SUBTYPE_PCAP)) {
1300 /* Write output in pcapng format */
1301 wtapng_section_t *shb_hdr;
1302 wtapng_iface_descriptions_t *idb_inf, *idb_inf_merge_file;
1303 wtapng_if_descr_t int_data, *file_int_data;
1304 GString *comment_gstr;
1305 guint itf_count, itf_id = 0;
1307 fake_interface_ids = TRUE;
1308 /* Create SHB info */
1309 shb_hdr = wtap_file_get_shb_info(in_files[0].wth);
1310 comment_gstr = g_string_new("");
1311 g_string_append_printf(comment_gstr, "%s \n",shb_hdr->opt_comment);
1312 g_string_append_printf(comment_gstr, "File created by merging: \n");
1313 file_type = WTAP_FILE_TYPE_SUBTYPE_PCAPNG;
1315 for (i = 0; i < in_file_count; i++) {
1316 g_string_append_printf(comment_gstr, "File%d: %s \n",i+1,in_files[i].filename);
1318 shb_hdr->section_length = -1;
1320 shb_hdr->opt_comment = g_string_free(comment_gstr, FALSE); /* NULL if not available */
1321 shb_hdr->shb_hardware = NULL; /* NULL if not available, UTF-8 string containing the */
1322 /* description of the hardware used to create this section. */
1323 shb_hdr->shb_os = NULL; /* NULL if not available, UTF-8 string containing the name */
1324 /* of the operating system used to create this section. */
1325 shb_hdr->shb_user_appl = g_strdup("Wireshark"); /* NULL if not available, UTF-8 string containing the name */
1326 /* of the application used to create this section. */
1328 /* create fake IDB info */
1329 idb_inf = g_new(wtapng_iface_descriptions_t,1);
1330 /* TODO make this the number of DIFFERENT encapsulation types
1331 * check that snaplength is the same too?
1333 idb_inf->interface_data = g_array_new(FALSE, FALSE, sizeof(wtapng_if_descr_t));
1335 for (i = 0; i < in_file_count; i++) {
1336 idb_inf_merge_file = wtap_file_get_idb_info(in_files[i].wth);
1337 for (itf_count = 0; itf_count < idb_inf_merge_file->interface_data->len; itf_count++) {
1338 /* read the interface data from the in file to our combined interface data */
1339 file_int_data = &g_array_index (idb_inf_merge_file->interface_data, wtapng_if_descr_t, itf_count);
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);
1359 g_free(idb_inf_merge_file);
1361 /* Set fake interface Id in per file data */
1362 in_files[i].interface_id = itf_id;
1363 itf_id += itf_count;
1366 pdh = wtap_dump_fdopen_ng(out_fd, file_type,
1367 selected_frame_type,
1368 merge_max_snapshot_length(in_file_count, in_files),
1369 FALSE /* compressed */, shb_hdr, idb_inf /* wtapng_iface_descriptions_t *idb_inf */, &open_err);
1373 merge_close_in_files(in_file_count, in_files);
1375 cf_open_failure_alert_box(out_filename, open_err, err_info, TRUE,
1382 pdh = wtap_dump_fdopen(out_fd, file_type,
1383 selected_frame_type,
1384 merge_max_snapshot_length(in_file_count, in_files),
1385 FALSE /* compressed */, &open_err);
1388 merge_close_in_files(in_file_count, in_files);
1390 cf_open_failure_alert_box(out_filename, open_err, err_info, TRUE,
1396 /* Get the sum of the sizes of all the files. */
1398 for (i = 0; i < in_file_count; i++)
1399 f_len += in_files[i].size;
1401 /* Update the progress bar when it gets to this value. */
1402 progbar_nextstep = 0;
1403 /* When we reach the value that triggers a progress bar update,
1404 bump that value by this amount. */
1405 progbar_quantum = f_len/N_PROGBAR_UPDATES;
1406 /* Progress so far. */
1410 g_get_current_time(&start_time);
1412 /* do the merge (or append) */
1415 in_file = merge_append_read_packet(in_file_count, in_files, &read_err,
1418 in_file = merge_read_packet(in_file_count, in_files, &read_err,
1420 if (in_file == NULL) {
1425 if (read_err != 0) {
1426 /* I/O error reading from in_file */
1427 got_read_error = TRUE;
1431 /* Get the sum of the data offsets in all of the files. */
1433 for (i = 0; i < in_file_count; i++)
1434 data_offset += in_files[i].data_offset;
1436 /* Create the progress bar if necessary.
1437 We check on every iteration of the loop, so that it takes no
1438 longer than the standard time to create it (otherwise, for a
1439 large file, we might take considerably longer than that standard
1440 time in order to get to the next progress bar step). */
1441 if (progbar == NULL) {
1442 progbar = delayed_create_progress_dlg(NULL, "Merging", "files",
1443 FALSE, &stop_flag, &start_time, progbar_val);
1446 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
1447 when we update it, we have to run the GTK+ main loop to get it
1448 to repaint what's pending, and doing so may involve an "ioctl()"
1449 to see if there's any pending input from an X server, and doing
1450 that for every packet can be costly, especially on a big file. */
1451 if (data_offset >= progbar_nextstep) {
1452 /* Get the sum of the seek positions in all of the files. */
1454 for (i = 0; i < in_file_count; i++)
1455 file_pos += wtap_read_so_far(in_files[i].wth);
1456 progbar_val = (gfloat) file_pos / (gfloat) f_len;
1457 if (progbar_val > 1.0f) {
1458 /* Some file probably grew while we were reading it.
1459 That "shouldn't happen", so we'll just clip the progress
1463 if (progbar != NULL) {
1464 g_snprintf(status_str, sizeof(status_str),
1465 "%" G_GINT64_MODIFIER "dKB of %" G_GINT64_MODIFIER "dKB",
1466 file_pos / 1024, f_len / 1024);
1467 update_progress_dlg(progbar, progbar_val, status_str);
1469 progbar_nextstep += progbar_quantum;
1473 /* Well, the user decided to abort the merge. */
1477 /* If we have WTAP_ENCAP_PER_PACKET and the infiles are of type
1478 * WTAP_FILE_TYPE_SUBTYPE_PCAP, we need to set the interface id
1479 * in the paket header = the interface index we used in the IDBs
1480 * interface description for this file(encapsulation type).
1482 if (fake_interface_ids) {
1483 struct wtap_pkthdr *phdr;
1485 phdr = wtap_phdr(in_file->wth);
1486 if (phdr->presence_flags & WTAP_HAS_INTERFACE_ID) {
1487 phdr->interface_id += in_file->interface_id;
1489 phdr->interface_id = in_file->interface_id;
1490 phdr->presence_flags = phdr->presence_flags | WTAP_HAS_INTERFACE_ID;
1493 if (!wtap_dump(pdh, wtap_phdr(in_file->wth),
1494 wtap_buf_ptr(in_file->wth), &write_err, &write_err_info)) {
1495 got_write_error = TRUE;
1500 /* We're done merging the files; destroy the progress bar if it was created. */
1501 if (progbar != NULL)
1502 destroy_progress_dlg(progbar);
1504 merge_close_in_files(in_file_count, in_files);
1505 if (!got_write_error) {
1506 if (!wtap_dump_close(pdh, &write_err))
1507 got_write_error = TRUE;
1510 * We already got a write error; no need to report another
1511 * write error on close.
1513 * Don't overwrite the earlier write error.
1515 (void)wtap_dump_close(pdh, &close_err);
1518 if (got_read_error) {
1520 * Find the file on which we got the error, and report the error.
1522 for (i = 0; i < in_file_count; i++) {
1523 if (in_files[i].state == GOT_ERROR) {
1524 /* Put up a message box noting that a read failed somewhere along
1526 display_basename = g_filename_display_basename(in_files[i].filename);
1529 case WTAP_ERR_SHORT_READ:
1530 simple_error_message_box(
1531 "The capture file %s appears to have been cut short"
1532 " in the middle of a packet.", display_basename);
1535 case WTAP_ERR_BAD_FILE:
1536 simple_error_message_box(
1537 "The capture file %s appears to be damaged or corrupt.\n(%s)",
1538 display_basename, err_info);
1542 case WTAP_ERR_DECOMPRESS:
1543 simple_error_message_box(
1544 "The compressed capture file %s appears to be damaged or corrupt.\n"
1545 "(%s)", display_basename,
1546 err_info != NULL ? err_info : "no information supplied");
1551 simple_error_message_box(
1552 "An error occurred while reading the"
1553 " capture file %s: %s.",
1554 display_basename, wtap_strerror(read_err));
1557 g_free(display_basename);
1562 if (got_write_error) {
1563 /* Put up an alert box for the write error. */
1564 if (write_err < 0) {
1565 /* Wiretap error. */
1566 switch (write_err) {
1568 case WTAP_ERR_UNWRITABLE_ENCAP:
1570 * This is a problem with the particular frame we're writing and
1571 * the file type and subtype we're writing; note that, and report
1572 * the frame number and file type/subtype.
1574 display_basename = g_filename_display_basename(in_file ? in_file->filename : "UNKNOWN");
1575 simple_error_message_box(
1576 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.",
1577 in_file ? in_file->packet_num : 0, display_basename,
1578 wtap_file_type_subtype_string(file_type));
1579 g_free(display_basename);
1582 case WTAP_ERR_PACKET_TOO_LARGE:
1584 * This is a problem with the particular frame we're writing and
1585 * the file type and subtype we're writing; note that, and report
1586 * the frame number and file type/subtype.
1588 display_basename = g_filename_display_basename(in_file ? in_file->filename : "UNKNOWN");
1589 simple_error_message_box(
1590 "Frame %u of \"%s\" is too large for a \"%s\" file.",
1591 in_file ? in_file->packet_num : 0, display_basename,
1592 wtap_file_type_subtype_string(file_type));
1593 g_free(display_basename);
1596 case WTAP_ERR_UNWRITABLE_REC_TYPE:
1598 * This is a problem with the particular record we're writing and
1599 * the file type and subtype we're writing; note that, and report
1600 * the record number and file type/subtype.
1602 display_basename = g_filename_display_basename(in_file ? in_file->filename : "UNKNOWN");
1603 simple_error_message_box(
1604 "Record %u of \"%s\" has a record type that can't be saved in a \"%s\" file.",
1605 in_file ? in_file->packet_num : 0, display_basename,
1606 wtap_file_type_subtype_string(file_type));
1607 g_free(display_basename);
1610 case WTAP_ERR_UNWRITABLE_REC_DATA:
1612 * This is a problem with the particular record we're writing and
1613 * the file type and subtype we're writing; note that, and report
1614 * the frame number and file type/subtype.
1616 display_basename = g_filename_display_basename(in_file ? in_file->filename : "UNKNOWN");
1617 simple_error_message_box(
1618 "Record %u of \"%s\" has data that can't be saved in a \"%s\" file.\n(%s)",
1619 in_file ? in_file->packet_num : 0, display_basename,
1620 wtap_file_type_subtype_string(file_type),
1621 write_err_info != NULL ? write_err_info : "no information supplied");
1622 g_free(write_err_info);
1623 g_free(display_basename);
1627 display_basename = g_filename_display_basename(out_filename);
1628 simple_error_message_box(
1629 "An error occurred while writing to the file \"%s\": %s.",
1630 out_filename, wtap_strerror(write_err));
1631 g_free(display_basename);
1636 write_failure_alert_box(out_filename, write_err);
1640 if (got_read_error || got_write_error || stop_flag) {
1641 /* Callers aren't expected to treat an error or an explicit abort
1642 differently - we put up error dialogs ourselves, so they don't
1650 cf_filter_packets(capture_file *cf, gchar *dftext, gboolean force)
1652 const char *filter_new = dftext ? dftext : "";
1653 const char *filter_old = cf->dfilter ? cf->dfilter : "";
1656 GTimeVal start_time;
1658 /* if new filter equals old one, do nothing unless told to do so */
1659 if (!force && strcmp(filter_new, filter_old) == 0) {
1665 if (dftext == NULL) {
1666 /* The new filter is an empty filter (i.e., display all packets).
1667 * so leave dfcode==NULL
1671 * We have a filter; make a copy of it (as we'll be saving it),
1672 * and try to compile it.
1674 dftext = g_strdup(dftext);
1675 if (!dfilter_compile(dftext, &dfcode, &err_msg)) {
1676 /* The attempt failed; report an error. */
1677 simple_message_box(ESD_TYPE_ERROR, NULL,
1678 "See the help for a description of the display filter syntax.",
1679 "\"%s\" isn't a valid display filter: %s",
1687 if (dfcode == NULL) {
1688 /* Yes - free the filter text, and set it to null. */
1694 /* We have a valid filter. Replace the current filter. */
1695 g_free(cf->dfilter);
1696 cf->dfilter = dftext;
1697 g_get_current_time(&start_time);
1700 /* Now rescan the packet list, applying the new filter, but not
1701 throwing away information constructed on a previous pass. */
1702 if (dftext == NULL) {
1703 rescan_packets(cf, "Resetting", "Filter", FALSE);
1705 rescan_packets(cf, "Filtering", dftext, FALSE);
1708 /* Cleanup and release all dfilter resources */
1709 dfilter_free(dfcode);
1715 cf_reftime_packets(capture_file *cf)
1717 ref_time_packets(cf);
1721 cf_redissect_packets(capture_file *cf)
1723 if (cf->state != FILE_CLOSED) {
1724 rescan_packets(cf, "Reprocessing", "all packets", TRUE);
1729 cf_read_record_r(capture_file *cf, const frame_data *fdata,
1730 struct wtap_pkthdr *phdr, Buffer *buf)
1734 gchar *display_basename;
1736 #ifdef WANT_PACKET_EDITOR
1737 /* if fdata->file_off == -1 it means packet was edited, and we must find data inside edited_frames tree */
1738 if (G_UNLIKELY(fdata->file_off == -1)) {
1739 const modified_frame_data *frame = (const modified_frame_data *) g_tree_lookup(cf->edited_frames, GINT_TO_POINTER(fdata->num));
1742 simple_error_message_box("fdata->file_off == -1, but can't find modified frame.");
1746 *phdr = frame->phdr;
1747 ws_buffer_assure_space(buf, frame->phdr.caplen);
1748 memcpy(ws_buffer_start_ptr(buf), frame->pd, frame->phdr.caplen);
1753 if (!wtap_seek_read(cf->wth, fdata->file_off, phdr, buf, &err, &err_info)) {
1754 display_basename = g_filename_display_basename(cf->filename);
1757 case WTAP_ERR_BAD_FILE:
1758 simple_error_message_box("An error occurred while reading from the file \"%s\": %s.\n(%s)",
1759 display_basename, wtap_strerror(err),
1760 err_info != NULL ? err_info : "no information supplied");
1765 simple_error_message_box(
1766 "An error occurred while reading from the file \"%s\": %s.",
1767 display_basename, wtap_strerror(err));
1770 g_free(display_basename);
1777 cf_read_record(capture_file *cf, frame_data *fdata)
1779 return cf_read_record_r(cf, fdata, &cf->phdr, &cf->buf);
1782 /* Rescan the list of packets, reconstructing the CList.
1784 "action" describes why we're doing this; it's used in the progress
1787 "action_item" describes what we're doing; it's used in the progress
1790 "redissect" is TRUE if we need to make the dissectors reconstruct
1791 any state information they have (because a preference that affects
1792 some dissector has changed, meaning some dissector might construct
1793 its state differently from the way it was constructed the last time). */
1795 rescan_packets(capture_file *cf, const char *action, const char *action_item, gboolean redissect)
1797 /* Rescan packets new packet list */
1800 progdlg_t *progbar = NULL;
1803 frame_data *selected_frame, *preceding_frame, *following_frame, *prev_frame;
1804 int selected_frame_num, preceding_frame_num, following_frame_num, prev_frame_num;
1805 gboolean selected_frame_seen;
1807 GTimeVal start_time;
1808 gchar status_str[100];
1809 int progbar_nextstep;
1810 int progbar_quantum;
1814 gboolean create_proto_tree;
1816 gboolean add_to_packet_list = FALSE;
1818 guint32 frames_count;
1820 /* Compile the current display filter.
1821 * We assume this will not fail since cf->dfilter is only set in
1822 * cf_filter IFF the filter was valid.
1824 compiled = dfilter_compile(cf->dfilter, &dfcode, NULL);
1825 g_assert(!cf->dfilter || (compiled && dfcode));
1827 /* Get the union of the flags for all tap listeners. */
1828 tap_flags = union_of_tap_listener_flags();
1829 cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
1831 (dfcode != NULL || have_filtering_tap_listeners() || (tap_flags & TL_REQUIRES_PROTO_TREE));
1833 reset_tap_listeners();
1834 /* Which frame, if any, is the currently selected frame?
1835 XXX - should the selected frame or the focus frame be the "current"
1836 frame, that frame being the one from which "Find Frame" searches
1838 selected_frame = cf->current_frame;
1840 /* Mark frame num as not found */
1841 selected_frame_num = -1;
1843 /* Freeze the packet list while we redo it, so we don't get any
1844 screen updates while it happens. */
1845 packet_list_freeze();
1848 /* We need to re-initialize all the state information that protocols
1849 keep, because some preference that controls a dissector has changed,
1850 which might cause the state information to be constructed differently
1851 by that dissector. */
1853 /* We might receive new packets while redissecting, and we don't
1854 want to dissect those before their time. */
1855 cf->redissecting = TRUE;
1857 /* 'reset' dissection session */
1858 epan_free(cf->epan);
1859 cf->epan = ws_epan_new(cf);
1860 cf->cinfo.epan = cf->epan;
1862 /* We need to redissect the packets so we have to discard our old
1863 * packet list store. */
1864 packet_list_clear();
1865 add_to_packet_list = TRUE;
1868 /* We don't yet know which will be the first and last frames displayed. */
1869 cf->first_displayed = 0;
1870 cf->last_displayed = 0;
1872 /* We currently don't display any packets */
1873 cf->displayed_count = 0;
1875 /* Iterate through the list of frames. Call a routine for each frame
1876 to check whether it should be displayed and, if so, add it to
1877 the display list. */
1879 cf->prev_dis = NULL;
1880 cf->prev_cap = NULL;
1883 /* Update the progress bar when it gets to this value. */
1884 progbar_nextstep = 0;
1885 /* When we reach the value that triggers a progress bar update,
1886 bump that value by this amount. */
1887 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
1888 /* Count of packets at which we've looked. */
1890 /* Progress so far. */
1894 g_get_current_time(&start_time);
1896 /* no previous row yet */
1897 prev_frame_num = -1;
1900 preceding_frame_num = -1;
1901 preceding_frame = NULL;
1902 following_frame_num = -1;
1903 following_frame = NULL;
1905 selected_frame_seen = FALSE;
1907 frames_count = cf->count;
1909 epan_dissect_init(&edt, cf->epan, create_proto_tree, FALSE);
1911 for (framenum = 1; framenum <= frames_count; framenum++) {
1912 fdata = frame_data_sequence_find(cf->frames, framenum);
1914 /* Create the progress bar if necessary.
1915 We check on every iteration of the loop, so that it takes no
1916 longer than the standard time to create it (otherwise, for a
1917 large file, we might take considerably longer than that standard
1918 time in order to get to the next progress bar step). */
1919 if (progbar == NULL)
1920 progbar = delayed_create_progress_dlg(cf->window, action, action_item, TRUE,
1921 &stop_flag, &start_time,
1924 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
1925 when we update it, we have to run the GTK+ main loop to get it
1926 to repaint what's pending, and doing so may involve an "ioctl()"
1927 to see if there's any pending input from an X server, and doing
1928 that for every packet can be costly, especially on a big file. */
1929 if (count >= progbar_nextstep) {
1930 /* let's not divide by zero. I should never be started
1931 * with count == 0, so let's assert that
1933 g_assert(cf->count > 0);
1934 progbar_val = (gfloat) count / frames_count;
1936 if (progbar != NULL) {
1937 g_snprintf(status_str, sizeof(status_str),
1938 "%4u of %u frames", count, frames_count);
1939 update_progress_dlg(progbar, progbar_val, status_str);
1942 progbar_nextstep += progbar_quantum;
1946 /* Well, the user decided to abort the filtering. Just stop.
1948 XXX - go back to the previous filter? Users probably just
1949 want not to wait for a filtering operation to finish;
1950 unless we cancel by having no filter, reverting to the
1951 previous filter will probably be even more expensive than
1952 continuing the filtering, as it involves going back to the
1953 beginning and filtering, and even with no filter we currently
1954 have to re-generate the entire clist, which is also expensive.
1956 I'm not sure what Network Monitor does, but it doesn't appear
1957 to give you an unfiltered display if you cancel. */
1964 /* Since all state for the frame was destroyed, mark the frame
1965 * as not visited, free the GSList referring to the state
1966 * data (the per-frame data itself was freed by
1967 * "init_dissection()"), and null out the GSList pointer. */
1968 frame_data_reset(fdata);
1969 frames_count = cf->count;
1972 /* Frame dependencies from the previous dissection/filtering are no longer valid. */
1973 fdata->flags.dependent_of_displayed = 0;
1975 if (!cf_read_record(cf, fdata))
1976 break; /* error reading the frame */
1978 /* If the previous frame is displayed, and we haven't yet seen the
1979 selected frame, remember that frame - it's the closest one we've
1980 yet seen before the selected frame. */
1981 if (prev_frame_num != -1 && !selected_frame_seen && prev_frame->flags.passed_dfilter) {
1982 preceding_frame_num = prev_frame_num;
1983 preceding_frame = prev_frame;
1986 add_packet_to_packet_list(fdata, cf, &edt, dfcode,
1988 ws_buffer_start_ptr(&cf->buf),
1989 add_to_packet_list);
1991 /* If this frame is displayed, and this is the first frame we've
1992 seen displayed after the selected frame, remember this frame -
1993 it's the closest one we've yet seen at or after the selected
1995 if (fdata->flags.passed_dfilter && selected_frame_seen && following_frame_num == -1) {
1996 following_frame_num = fdata->num;
1997 following_frame = fdata;
1999 if (fdata == selected_frame) {
2000 selected_frame_seen = TRUE;
2001 if (fdata->flags.passed_dfilter)
2002 selected_frame_num = fdata->num;
2005 /* Remember this frame - it'll be the previous frame
2006 on the next pass through the loop. */
2007 prev_frame_num = fdata->num;
2011 epan_dissect_cleanup(&edt);
2013 /* We are done redissecting the packet list. */
2014 cf->redissecting = FALSE;
2017 frames_count = cf->count;
2018 /* Clear out what remains of the visited flags and per-frame data
2021 XXX - that may cause various forms of bogosity when dissecting
2022 these frames, as they won't have been seen by this sequential
2023 pass, but the only alternative I see is to keep scanning them
2024 even though the user requested that the scan stop, and that
2025 would leave the user stuck with an Wireshark grinding on
2026 until it finishes. Should we just stick them with that? */
2027 for (; framenum <= frames_count; framenum++) {
2028 fdata = frame_data_sequence_find(cf->frames, framenum);
2029 frame_data_reset(fdata);
2033 /* We're done filtering the packets; destroy the progress bar if it
2035 if (progbar != NULL)
2036 destroy_progress_dlg(progbar);
2038 /* Unfreeze the packet list. */
2039 if (!add_to_packet_list)
2040 packet_list_recreate_visible_rows();
2042 /* Compute the time it took to filter the file */
2043 compute_elapsed(cf, &start_time);
2047 if (selected_frame_num == -1) {
2048 /* The selected frame didn't pass the filter. */
2049 if (selected_frame == NULL) {
2050 /* That's because there *was* no selected frame. Make the first
2051 displayed frame the current frame. */
2052 selected_frame_num = 0;
2054 /* Find the nearest displayed frame to the selected frame (whether
2055 it's before or after that frame) and make that the current frame.
2056 If the next and previous displayed frames are equidistant from the
2057 selected frame, choose the next one. */
2058 g_assert(following_frame == NULL ||
2059 following_frame->num >= selected_frame->num);
2060 g_assert(preceding_frame == NULL ||
2061 preceding_frame->num <= selected_frame->num);
2062 if (following_frame == NULL) {
2063 /* No frame after the selected frame passed the filter, so we
2064 have to select the last displayed frame before the selected
2066 selected_frame_num = preceding_frame_num;
2067 selected_frame = preceding_frame;
2068 } else if (preceding_frame == NULL) {
2069 /* No frame before the selected frame passed the filter, so we
2070 have to select the first displayed frame after the selected
2072 selected_frame_num = following_frame_num;
2073 selected_frame = following_frame;
2075 /* Frames before and after the selected frame passed the filter, so
2076 we'll select the previous frame */
2077 selected_frame_num = preceding_frame_num;
2078 selected_frame = preceding_frame;
2083 if (selected_frame_num == -1) {
2084 /* There are no frames displayed at all. */
2085 cf_unselect_packet(cf);
2087 /* Either the frame that was selected passed the filter, or we've
2088 found the nearest displayed frame to that frame. Select it, make
2089 it the focus row, and make it visible. */
2090 /* Set to invalid to force update of packet list and packet details */
2091 cf->current_row = -1;
2092 if (selected_frame_num == 0) {
2093 packet_list_select_first_row();
2095 if (!packet_list_select_row_from_data(selected_frame)) {
2096 /* We didn't find a row corresponding to this frame.
2097 This means that the frame isn't being displayed currently,
2098 so we can't select it. */
2099 simple_message_box(ESD_TYPE_INFO, NULL,
2100 "The capture file is probably not fully dissected.",
2101 "End of capture exceeded.");
2106 /* Cleanup and release all dfilter resources */
2107 dfilter_free(dfcode);
2112 * Scan trough all frame data and recalculate the ref time
2113 * without rereading the file.
2114 * XXX - do we need a progres bar or is this fast enough?
2117 ref_time_packets(capture_file *cf)
2124 cf->prev_dis = NULL;
2127 for (framenum = 1; framenum <= cf->count; framenum++) {
2128 fdata = frame_data_sequence_find(cf->frames, framenum);
2130 /* just add some value here until we know if it is being displayed or not */
2131 fdata->cum_bytes = cf->cum_bytes + fdata->pkt_len;
2137 /* If we don't have the time stamp of the first packet in the
2138 capture, it's because this is the first packet. Save the time
2139 stamp of this packet as the time stamp of the first packet. */
2140 if (cf->ref == NULL)
2142 /* if this frames is marked as a reference time frame, reset
2143 firstsec and firstusec to this frame */
2144 if (fdata->flags.ref_time)
2147 /* If we don't have the time stamp of the previous displayed packet,
2148 it's because this is the first displayed packet. Save the time
2149 stamp of this packet as the time stamp of the previous displayed
2151 if (cf->prev_dis == NULL) {
2152 cf->prev_dis = fdata;
2155 /* Get the time elapsed between the first packet and this packet. */
2156 fdata->frame_ref_num = (fdata != cf->ref) ? cf->ref->num : 0;
2157 nstime_delta(&rel_ts, &fdata->abs_ts, &cf->ref->abs_ts);
2159 /* If it's greater than the current elapsed time, set the elapsed time
2160 to it (we check for "greater than" so as not to be confused by
2161 time moving backwards). */
2162 if ((gint32)cf->elapsed_time.secs < rel_ts.secs
2163 || ((gint32)cf->elapsed_time.secs == rel_ts.secs && (gint32)cf->elapsed_time.nsecs < rel_ts.nsecs)) {
2164 cf->elapsed_time = rel_ts;
2167 /* If this frame is displayed, get the time elapsed between the
2168 previous displayed packet and this packet. */
2169 if ( fdata->flags.passed_dfilter ) {
2170 fdata->prev_dis_num = cf->prev_dis->num;
2171 cf->prev_dis = fdata;
2177 if ( (fdata->flags.passed_dfilter) || (fdata->flags.ref_time) ) {
2178 /* This frame either passed the display filter list or is marked as
2179 a time reference frame. All time reference frames are displayed
2180 even if they don't pass the display filter */
2181 if (fdata->flags.ref_time) {
2182 /* if this was a TIME REF frame we should reset the cum_bytes field */
2183 cf->cum_bytes = fdata->pkt_len;
2184 fdata->cum_bytes = cf->cum_bytes;
2186 /* increase cum_bytes with this packets length */
2187 cf->cum_bytes += fdata->pkt_len;
2200 process_specified_records(capture_file *cf, packet_range_t *range,
2201 const char *string1, const char *string2, gboolean terminate_is_stop,
2202 gboolean (*callback)(capture_file *, frame_data *,
2203 struct wtap_pkthdr *, const guint8 *, void *),
2204 void *callback_args)
2209 psp_return_t ret = PSP_FINISHED;
2211 progdlg_t *progbar = NULL;
2214 gboolean progbar_stop_flag;
2215 GTimeVal progbar_start_time;
2216 gchar progbar_status_str[100];
2217 int progbar_nextstep;
2218 int progbar_quantum;
2219 range_process_e process_this;
2220 struct wtap_pkthdr phdr;
2222 wtap_phdr_init(&phdr);
2223 ws_buffer_init(&buf, 1500);
2225 /* Update the progress bar when it gets to this value. */
2226 progbar_nextstep = 0;
2227 /* When we reach the value that triggers a progress bar update,
2228 bump that value by this amount. */
2229 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
2230 /* Count of packets at which we've looked. */
2232 /* Progress so far. */
2235 progbar_stop_flag = FALSE;
2236 g_get_current_time(&progbar_start_time);
2239 packet_range_process_init(range);
2241 /* Iterate through all the packets, printing the packets that
2242 were selected by the current display filter. */
2243 for (framenum = 1; framenum <= cf->count; framenum++) {
2244 fdata = frame_data_sequence_find(cf->frames, framenum);
2246 /* Create the progress bar if necessary.
2247 We check on every iteration of the loop, so that it takes no
2248 longer than the standard time to create it (otherwise, for a
2249 large file, we might take considerably longer than that standard
2250 time in order to get to the next progress bar step). */
2251 if (progbar == NULL)
2252 progbar = delayed_create_progress_dlg(cf->window, string1, string2,
2255 &progbar_start_time,
2258 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
2259 when we update it, we have to run the GTK+ main loop to get it
2260 to repaint what's pending, and doing so may involve an "ioctl()"
2261 to see if there's any pending input from an X server, and doing
2262 that for every packet can be costly, especially on a big file. */
2263 if (progbar_count >= progbar_nextstep) {
2264 /* let's not divide by zero. I should never be started
2265 * with count == 0, so let's assert that
2267 g_assert(cf->count > 0);
2268 progbar_val = (gfloat) progbar_count / cf->count;
2270 if (progbar != NULL) {
2271 g_snprintf(progbar_status_str, sizeof(progbar_status_str),
2272 "%4u of %u packets", progbar_count, cf->count);
2273 update_progress_dlg(progbar, progbar_val, progbar_status_str);
2276 progbar_nextstep += progbar_quantum;
2279 if (progbar_stop_flag) {
2280 /* Well, the user decided to abort the operation. Just stop,
2281 and arrange to return PSP_STOPPED to our caller, so they know
2282 it was stopped explicitly. */
2289 if (range != NULL) {
2290 /* do we have to process this packet? */
2291 process_this = packet_range_process_packet(range, fdata);
2292 if (process_this == range_process_next) {
2293 /* this packet uninteresting, continue with next one */
2295 } else if (process_this == range_processing_finished) {
2296 /* all interesting packets processed, stop the loop */
2301 /* Get the packet */
2302 if (!cf_read_record_r(cf, fdata, &phdr, &buf)) {
2303 /* Attempt to get the packet failed. */
2307 /* Process the packet */
2308 if (!callback(cf, fdata, &phdr, ws_buffer_start_ptr(&buf), callback_args)) {
2309 /* Callback failed. We assume it reported the error appropriately. */
2315 /* We're done printing the packets; destroy the progress bar if
2317 if (progbar != NULL)
2318 destroy_progress_dlg(progbar);
2320 wtap_phdr_cleanup(&phdr);
2321 ws_buffer_free(&buf);
2329 } retap_callback_args_t;
2332 retap_packet(capture_file *cf, frame_data *fdata,
2333 struct wtap_pkthdr *phdr, const guint8 *pd,
2336 retap_callback_args_t *args = (retap_callback_args_t *)argsp;
2338 epan_dissect_run_with_taps(&args->edt, cf->cd_t, phdr, frame_tvbuff_new(fdata, pd), fdata, args->cinfo);
2339 epan_dissect_reset(&args->edt);
2345 cf_retap_packets(capture_file *cf)
2347 packet_range_t range;
2348 retap_callback_args_t callback_args;
2349 gboolean construct_protocol_tree;
2350 gboolean filtering_tap_listeners;
2354 /* Presumably the user closed the capture file. */
2356 return CF_READ_ABORTED;
2359 /* Do we have any tap listeners with filters? */
2360 filtering_tap_listeners = have_filtering_tap_listeners();
2362 tap_flags = union_of_tap_listener_flags();
2364 /* If any tap listeners have filters, or require the protocol tree,
2365 construct the protocol tree. */
2366 construct_protocol_tree = filtering_tap_listeners ||
2367 (tap_flags & TL_REQUIRES_PROTO_TREE);
2369 /* If any tap listeners require the columns, construct them. */
2370 callback_args.cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
2372 /* Reset the tap listeners. */
2373 reset_tap_listeners();
2375 epan_dissect_init(&callback_args.edt, cf->epan, construct_protocol_tree, FALSE);
2377 /* Iterate through the list of packets, dissecting all packets and
2378 re-running the taps. */
2379 packet_range_init(&range, cf);
2380 packet_range_process_init(&range);
2382 ret = process_specified_records(cf, &range, "Recalculating statistics on",
2383 "all packets", TRUE, retap_packet,
2386 epan_dissect_cleanup(&callback_args.edt);
2390 /* Completed successfully. */
2394 /* Well, the user decided to abort the refiltering.
2395 Return CF_READ_ABORTED so our caller knows they did that. */
2396 return CF_READ_ABORTED;
2399 /* Error while retapping. */
2400 return CF_READ_ERROR;
2403 g_assert_not_reached();
2408 print_args_t *print_args;
2409 gboolean print_header_line;
2410 char *header_line_buf;
2411 int header_line_buf_len;
2412 gboolean print_formfeed;
2413 gboolean print_separator;
2417 int num_visible_cols;
2420 } print_callback_args_t;
2423 print_packet(capture_file *cf, frame_data *fdata,
2424 struct wtap_pkthdr *phdr, const guint8 *pd,
2427 print_callback_args_t *args = (print_callback_args_t *)argsp;
2433 char bookmark_name[9+10+1]; /* "__frameNNNNNNNNNN__\0" */
2434 char bookmark_title[6+10+1]; /* "Frame NNNNNNNNNN__\0" */
2436 /* Fill in the column information if we're printing the summary
2438 if (args->print_args->print_summary) {
2439 col_custom_prime_edt(&args->edt, &cf->cinfo);
2440 epan_dissect_run(&args->edt, cf->cd_t, phdr, frame_tvbuff_new(fdata, pd), fdata, &cf->cinfo);
2441 epan_dissect_fill_in_columns(&args->edt, FALSE, TRUE);
2443 epan_dissect_run(&args->edt, cf->cd_t, phdr, frame_tvbuff_new(fdata, pd), fdata, NULL);
2445 if (args->print_formfeed) {
2446 if (!new_page(args->print_args->stream))
2449 if (args->print_separator) {
2450 if (!print_line(args->print_args->stream, 0, ""))
2456 * We generate bookmarks, if the output format supports them.
2457 * The name is "__frameN__".
2459 g_snprintf(bookmark_name, sizeof bookmark_name, "__frame%u__", fdata->num);
2461 if (args->print_args->print_summary) {
2462 if (!args->print_args->print_col_headings)
2463 args->print_header_line = FALSE;
2464 if (args->print_header_line) {
2465 if (!print_line(args->print_args->stream, 0, args->header_line_buf))
2467 args->print_header_line = FALSE; /* we might not need to print any more */
2469 cp = &args->line_buf[0];
2471 for (i = 0; i < args->num_visible_cols; i++) {
2472 /* Find the length of the string for this column. */
2473 column_len = (int) strlen(cf->cinfo.col_data[args->visible_cols[i]]);
2474 if (args->col_widths[i] > column_len)
2475 column_len = args->col_widths[i];
2477 /* Make sure there's room in the line buffer for the column; if not,
2478 double its length. */
2479 line_len += column_len + 1; /* "+1" for space */
2480 if (line_len > args->line_buf_len) {
2481 cp_off = (int) (cp - args->line_buf);
2482 args->line_buf_len = 2 * line_len;
2483 args->line_buf = (char *)g_realloc(args->line_buf, args->line_buf_len + 1);
2484 cp = args->line_buf + cp_off;
2487 /* Right-justify the packet number column. */
2488 if (cf->cinfo.col_fmt[args->visible_cols[i]] == COL_NUMBER)
2489 g_snprintf(cp, column_len+1, "%*s", args->col_widths[i], cf->cinfo.col_data[args->visible_cols[i]]);
2491 g_snprintf(cp, column_len+1, "%-*s", args->col_widths[i], cf->cinfo.col_data[args->visible_cols[i]]);
2493 if (i != args->num_visible_cols - 1)
2499 * Generate a bookmark, using the summary line as the title.
2501 if (!print_bookmark(args->print_args->stream, bookmark_name,
2505 if (!print_line(args->print_args->stream, 0, args->line_buf))
2509 * Generate a bookmark, using "Frame N" as the title, as we're not
2510 * printing the summary line.
2512 g_snprintf(bookmark_title, sizeof bookmark_title, "Frame %u", fdata->num);
2513 if (!print_bookmark(args->print_args->stream, bookmark_name,
2516 } /* if (print_summary) */
2518 if (args->print_args->print_dissections != print_dissections_none) {
2519 if (args->print_args->print_summary) {
2520 /* Separate the summary line from the tree with a blank line. */
2521 if (!print_line(args->print_args->stream, 0, ""))
2525 /* Print the information in that tree. */
2526 if (!proto_tree_print(args->print_args, &args->edt, NULL, args->print_args->stream))
2529 /* Print a blank line if we print anything after this (aka more than one packet). */
2530 args->print_separator = TRUE;
2532 /* Print a header line if we print any more packet summaries */
2533 if (args->print_args->print_col_headings)
2534 args->print_header_line = TRUE;
2537 if (args->print_args->print_hex) {
2538 if (args->print_args->print_summary || (args->print_args->print_dissections != print_dissections_none)) {
2539 if (!print_line(args->print_args->stream, 0, ""))
2542 /* Print the full packet data as hex. */
2543 if (!print_hex_data(args->print_args->stream, &args->edt))
2546 /* Print a blank line if we print anything after this (aka more than one packet). */
2547 args->print_separator = TRUE;
2549 /* Print a header line if we print any more packet summaries */
2550 if (args->print_args->print_col_headings)
2551 args->print_header_line = TRUE;
2552 } /* if (args->print_args->print_dissections != print_dissections_none) */
2554 epan_dissect_reset(&args->edt);
2556 /* do we want to have a formfeed between each packet from now on? */
2557 if (args->print_args->print_formfeed) {
2558 args->print_formfeed = TRUE;
2564 epan_dissect_reset(&args->edt);
2569 cf_print_packets(capture_file *cf, print_args_t *print_args)
2571 print_callback_args_t callback_args;
2574 int i, cp_off, column_len, line_len;
2575 int num_visible_col = 0, last_visible_col = 0, visible_col_count;
2579 gboolean proto_tree_needed;
2581 callback_args.print_args = print_args;
2582 callback_args.print_header_line = print_args->print_col_headings;
2583 callback_args.header_line_buf = NULL;
2584 callback_args.header_line_buf_len = 256;
2585 callback_args.print_formfeed = FALSE;
2586 callback_args.print_separator = FALSE;
2587 callback_args.line_buf = NULL;
2588 callback_args.line_buf_len = 256;
2589 callback_args.col_widths = NULL;
2590 callback_args.num_visible_cols = 0;
2591 callback_args.visible_cols = NULL;
2593 if (!print_preamble(print_args->stream, cf->filename, get_ws_vcs_version_info())) {
2594 destroy_print_stream(print_args->stream);
2595 return CF_PRINT_WRITE_ERROR;
2598 if (print_args->print_summary) {
2599 /* We're printing packet summaries. Allocate the header line buffer
2600 and get the column widths. */
2601 callback_args.header_line_buf = (char *)g_malloc(callback_args.header_line_buf_len + 1);
2603 /* Find the number of visible columns and the last visible column */
2604 for (i = 0; i < prefs.num_cols; i++) {
2606 clp = g_list_nth(prefs.col_list, i);
2607 if (clp == NULL) /* Sanity check, Invalid column requested */
2610 cfmt = (fmt_data *) clp->data;
2611 if (cfmt->visible) {
2613 last_visible_col = i;
2617 /* Find the widths for each of the columns - maximum of the
2618 width of the title and the width of the data - and construct
2619 a buffer with a line containing the column titles. */
2620 callback_args.num_visible_cols = num_visible_col;
2621 callback_args.col_widths = (gint *) g_malloc(sizeof(gint) * num_visible_col);
2622 callback_args.visible_cols = (gint *) g_malloc(sizeof(gint) * num_visible_col);
2623 cp = &callback_args.header_line_buf[0];
2625 visible_col_count = 0;
2626 for (i = 0; i < cf->cinfo.num_cols; i++) {
2628 clp = g_list_nth(prefs.col_list, i);
2629 if (clp == NULL) /* Sanity check, Invalid column requested */
2632 cfmt = (fmt_data *) clp->data;
2633 if (cfmt->visible == FALSE)
2636 /* Save the order of visible columns */
2637 callback_args.visible_cols[visible_col_count] = i;
2639 /* Don't pad the last column. */
2640 if (i == last_visible_col)
2641 callback_args.col_widths[visible_col_count] = 0;
2643 callback_args.col_widths[visible_col_count] = (gint) strlen(cf->cinfo.col_title[i]);
2644 data_width = get_column_char_width(get_column_format(i));
2645 if (data_width > callback_args.col_widths[visible_col_count])
2646 callback_args.col_widths[visible_col_count] = data_width;
2649 /* Find the length of the string for this column. */
2650 column_len = (int) strlen(cf->cinfo.col_title[i]);
2651 if (callback_args.col_widths[i] > column_len)
2652 column_len = callback_args.col_widths[visible_col_count];
2654 /* Make sure there's room in the line buffer for the column; if not,
2655 double its length. */
2656 line_len += column_len + 1; /* "+1" for space */
2657 if (line_len > callback_args.header_line_buf_len) {
2658 cp_off = (int) (cp - callback_args.header_line_buf);
2659 callback_args.header_line_buf_len = 2 * line_len;
2660 callback_args.header_line_buf = (char *)g_realloc(callback_args.header_line_buf,
2661 callback_args.header_line_buf_len + 1);
2662 cp = callback_args.header_line_buf + cp_off;
2665 /* Right-justify the packet number column. */
2666 /* if (cf->cinfo.col_fmt[i] == COL_NUMBER)
2667 g_snprintf(cp, column_len+1, "%*s", callback_args.col_widths[visible_col_count], cf->cinfo.col_title[i]);
2669 g_snprintf(cp, column_len+1, "%-*s", callback_args.col_widths[visible_col_count], cf->cinfo.col_title[i]);
2671 if (i != cf->cinfo.num_cols - 1)
2674 visible_col_count++;
2678 /* Now start out the main line buffer with the same length as the
2679 header line buffer. */
2680 callback_args.line_buf_len = callback_args.header_line_buf_len;
2681 callback_args.line_buf = (char *)g_malloc(callback_args.line_buf_len + 1);
2682 } /* if (print_summary) */
2684 /* Create the protocol tree, and make it visible, if we're printing
2685 the dissection or the hex data.
2686 XXX - do we need it if we're just printing the hex data? */
2688 callback_args.print_args->print_dissections != print_dissections_none ||
2689 callback_args.print_args->print_hex ||
2690 have_custom_cols(&cf->cinfo);
2691 epan_dissect_init(&callback_args.edt, cf->epan, proto_tree_needed, proto_tree_needed);
2693 /* Iterate through the list of packets, printing the packets we were
2695 ret = process_specified_records(cf, &print_args->range, "Printing",
2696 "selected packets", TRUE, print_packet,
2698 epan_dissect_cleanup(&callback_args.edt);
2699 g_free(callback_args.header_line_buf);
2700 g_free(callback_args.line_buf);
2701 g_free(callback_args.col_widths);
2702 g_free(callback_args.visible_cols);
2707 /* Completed successfully. */
2711 /* Well, the user decided to abort the printing.
2713 XXX - note that what got generated before they did that
2714 will get printed if we're piping to a print program; we'd
2715 have to write to a file and then hand that to the print
2716 program to make it actually not print anything. */
2720 /* Error while printing.
2722 XXX - note that what got generated before they did that
2723 will get printed if we're piping to a print program; we'd
2724 have to write to a file and then hand that to the print
2725 program to make it actually not print anything. */
2726 destroy_print_stream(print_args->stream);
2727 return CF_PRINT_WRITE_ERROR;
2730 if (!print_finale(print_args->stream)) {
2731 destroy_print_stream(print_args->stream);
2732 return CF_PRINT_WRITE_ERROR;
2735 if (!destroy_print_stream(print_args->stream))
2736 return CF_PRINT_WRITE_ERROR;
2744 } write_packet_callback_args_t;
2747 write_pdml_packet(capture_file *cf, frame_data *fdata,
2748 struct wtap_pkthdr *phdr, const guint8 *pd,
2751 write_packet_callback_args_t *args = (write_packet_callback_args_t *)argsp;
2753 /* Create the protocol tree, but don't fill in the column information. */
2754 epan_dissect_run(&args->edt, cf->cd_t, phdr, frame_tvbuff_new(fdata, pd), fdata, NULL);
2756 /* Write out the information in that tree. */
2757 write_pdml_proto_tree(&args->edt, args->fh);
2759 epan_dissect_reset(&args->edt);
2761 return !ferror(args->fh);
2765 cf_write_pdml_packets(capture_file *cf, print_args_t *print_args)
2767 write_packet_callback_args_t callback_args;
2771 fh = ws_fopen(print_args->file, "w");
2773 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2775 write_pdml_preamble(fh, cf->filename);
2778 return CF_PRINT_WRITE_ERROR;
2781 callback_args.fh = fh;
2782 epan_dissect_init(&callback_args.edt, cf->epan, TRUE, TRUE);
2784 /* Iterate through the list of packets, printing the packets we were
2786 ret = process_specified_records(cf, &print_args->range, "Writing PDML",
2787 "selected packets", TRUE,
2788 write_pdml_packet, &callback_args);
2790 epan_dissect_cleanup(&callback_args.edt);
2795 /* Completed successfully. */
2799 /* Well, the user decided to abort the printing. */
2803 /* Error while printing. */
2805 return CF_PRINT_WRITE_ERROR;
2808 write_pdml_finale(fh);
2811 return CF_PRINT_WRITE_ERROR;
2814 /* XXX - check for an error */
2821 write_psml_packet(capture_file *cf, frame_data *fdata,
2822 struct wtap_pkthdr *phdr, const guint8 *pd,
2825 write_packet_callback_args_t *args = (write_packet_callback_args_t *)argsp;
2827 /* Fill in the column information */
2828 col_custom_prime_edt(&args->edt, &cf->cinfo);
2829 epan_dissect_run(&args->edt, cf->cd_t, phdr, frame_tvbuff_new(fdata, pd), fdata, &cf->cinfo);
2830 epan_dissect_fill_in_columns(&args->edt, FALSE, TRUE);
2832 /* Write out the column information. */
2833 write_psml_columns(&args->edt, args->fh);
2835 epan_dissect_reset(&args->edt);
2837 return !ferror(args->fh);
2841 cf_write_psml_packets(capture_file *cf, print_args_t *print_args)
2843 write_packet_callback_args_t callback_args;
2847 gboolean proto_tree_needed;
2849 fh = ws_fopen(print_args->file, "w");
2851 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2853 write_psml_preamble(&cf->cinfo, fh);
2856 return CF_PRINT_WRITE_ERROR;
2859 callback_args.fh = fh;
2861 /* Fill in the column information, only create the protocol tree
2862 if having custom columns. */
2863 proto_tree_needed = have_custom_cols(&cf->cinfo);
2864 epan_dissect_init(&callback_args.edt, cf->epan, proto_tree_needed, proto_tree_needed);
2866 /* Iterate through the list of packets, printing the packets we were
2868 ret = process_specified_records(cf, &print_args->range, "Writing PSML",
2869 "selected packets", TRUE,
2870 write_psml_packet, &callback_args);
2872 epan_dissect_cleanup(&callback_args.edt);
2877 /* Completed successfully. */
2881 /* Well, the user decided to abort the printing. */
2885 /* Error while printing. */
2887 return CF_PRINT_WRITE_ERROR;
2890 write_psml_finale(fh);
2893 return CF_PRINT_WRITE_ERROR;
2896 /* XXX - check for an error */
2903 write_csv_packet(capture_file *cf, frame_data *fdata,
2904 struct wtap_pkthdr *phdr, const guint8 *pd,
2907 write_packet_callback_args_t *args = (write_packet_callback_args_t *)argsp;
2909 /* Fill in the column information */
2910 col_custom_prime_edt(&args->edt, &cf->cinfo);
2911 epan_dissect_run(&args->edt, cf->cd_t, phdr, frame_tvbuff_new(fdata, pd), fdata, &cf->cinfo);
2912 epan_dissect_fill_in_columns(&args->edt, FALSE, TRUE);
2914 /* Write out the column information. */
2915 write_csv_columns(&args->edt, args->fh);
2917 epan_dissect_reset(&args->edt);
2919 return !ferror(args->fh);
2923 cf_write_csv_packets(capture_file *cf, print_args_t *print_args)
2925 write_packet_callback_args_t callback_args;
2926 gboolean proto_tree_needed;
2930 fh = ws_fopen(print_args->file, "w");
2932 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2934 write_csv_column_titles(&cf->cinfo, fh);
2937 return CF_PRINT_WRITE_ERROR;
2940 callback_args.fh = fh;
2942 /* only create the protocol tree if having custom columns. */
2943 proto_tree_needed = have_custom_cols(&cf->cinfo);
2944 epan_dissect_init(&callback_args.edt, cf->epan, proto_tree_needed, proto_tree_needed);
2946 /* Iterate through the list of packets, printing the packets we were
2948 ret = process_specified_records(cf, &print_args->range, "Writing CSV",
2949 "selected packets", TRUE,
2950 write_csv_packet, &callback_args);
2952 epan_dissect_cleanup(&callback_args.edt);
2957 /* Completed successfully. */
2961 /* Well, the user decided to abort the printing. */
2965 /* Error while printing. */
2967 return CF_PRINT_WRITE_ERROR;
2970 /* XXX - check for an error */
2977 carrays_write_packet(capture_file *cf, frame_data *fdata,
2978 struct wtap_pkthdr *phdr,
2979 const guint8 *pd, void *argsp)
2981 write_packet_callback_args_t *args = (write_packet_callback_args_t *)argsp;
2983 epan_dissect_run(&args->edt, cf->cd_t, phdr, frame_tvbuff_new(fdata, pd), fdata, NULL);
2984 write_carrays_hex_data(fdata->num, args->fh, &args->edt);
2985 epan_dissect_reset(&args->edt);
2987 return !ferror(args->fh);
2991 cf_write_carrays_packets(capture_file *cf, print_args_t *print_args)
2993 write_packet_callback_args_t callback_args;
2997 fh = ws_fopen(print_args->file, "w");
3000 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
3004 return CF_PRINT_WRITE_ERROR;
3007 callback_args.fh = fh;
3008 epan_dissect_init(&callback_args.edt, cf->epan, TRUE, TRUE);
3010 /* Iterate through the list of packets, printing the packets we were
3012 ret = process_specified_records(cf, &print_args->range,
3014 "selected packets", TRUE,
3015 carrays_write_packet, &callback_args);
3017 epan_dissect_cleanup(&callback_args.edt);
3021 /* Completed successfully. */
3024 /* Well, the user decided to abort the printing. */
3027 /* Error while printing. */
3029 return CF_PRINT_WRITE_ERROR;
3037 cf_find_packet_protocol_tree(capture_file *cf, const char *string,
3038 search_direction dir)
3042 mdata.string = string;
3043 mdata.string_len = strlen(string);
3044 return find_packet(cf, match_protocol_tree, &mdata, dir);
3048 cf_find_string_protocol_tree(capture_file *cf, proto_tree *tree, match_data *mdata)
3050 mdata->frame_matched = FALSE;
3051 mdata->string = convert_string_case(cf->sfilter, cf->case_type);
3052 mdata->string_len = strlen(mdata->string);
3054 /* Iterate through all the nodes looking for matching text */
3055 proto_tree_children_foreach(tree, match_subtree_text, mdata);
3056 return mdata->frame_matched ? MR_MATCHED : MR_NOTMATCHED;
3060 match_protocol_tree(capture_file *cf, frame_data *fdata, void *criterion)
3062 match_data *mdata = (match_data *)criterion;
3065 /* Load the frame's data. */
3066 if (!cf_read_record(cf, fdata)) {
3067 /* Attempt to get the packet failed. */
3071 /* Construct the protocol tree, including the displayed text */
3072 epan_dissect_init(&edt, cf->epan, TRUE, TRUE);
3073 /* We don't need the column information */
3074 epan_dissect_run(&edt, cf->cd_t, &cf->phdr, frame_tvbuff_new_buffer(fdata, &cf->buf), fdata, NULL);
3076 /* Iterate through all the nodes, seeing if they have text that matches. */
3078 mdata->frame_matched = FALSE;
3079 proto_tree_children_foreach(edt.tree, match_subtree_text, mdata);
3080 epan_dissect_cleanup(&edt);
3081 return mdata->frame_matched ? MR_MATCHED : MR_NOTMATCHED;
3085 match_subtree_text(proto_node *node, gpointer data)
3087 match_data *mdata = (match_data *) data;
3088 const gchar *string = mdata->string;
3089 size_t string_len = mdata->string_len;
3090 capture_file *cf = mdata->cf;
3091 field_info *fi = PNODE_FINFO(node);
3092 gchar label_str[ITEM_LABEL_LENGTH];
3099 /* dissection with an invisible proto tree? */
3102 if (mdata->frame_matched) {
3103 /* We already had a match; don't bother doing any more work. */
3107 /* Don't match invisible entries. */
3108 if (PROTO_ITEM_IS_HIDDEN(node))
3111 /* was a free format label produced? */
3113 label_ptr = fi->rep->representation;
3115 /* no, make a generic label */
3116 label_ptr = label_str;
3117 proto_item_fill_label(fi, label_str);
3120 /* Does that label match? */
3121 label_len = strlen(label_ptr);
3122 for (i = 0; i < label_len; i++) {
3123 c_char = label_ptr[i];
3125 c_char = g_ascii_toupper(c_char);
3126 if (c_char == string[c_match]) {
3128 if (c_match == string_len) {
3129 /* No need to look further; we have a match */
3130 mdata->frame_matched = TRUE;
3138 /* Recurse into the subtree, if it exists */
3139 if (node->first_child != NULL)
3140 proto_tree_children_foreach(node, match_subtree_text, mdata);
3144 cf_find_packet_summary_line(capture_file *cf, const char *string,
3145 search_direction dir)
3149 mdata.string = string;
3150 mdata.string_len = strlen(string);
3151 return find_packet(cf, match_summary_line, &mdata, dir);
3155 match_summary_line(capture_file *cf, frame_data *fdata, void *criterion)
3157 match_data *mdata = (match_data *)criterion;
3158 const gchar *string = mdata->string;
3159 size_t string_len = mdata->string_len;
3161 const char *info_column;
3162 size_t info_column_len;
3163 match_result result = MR_NOTMATCHED;
3169 /* Load the frame's data. */
3170 if (!cf_read_record(cf, fdata)) {
3171 /* Attempt to get the packet failed. */
3175 /* Don't bother constructing the protocol tree */
3176 epan_dissect_init(&edt, cf->epan, FALSE, FALSE);
3177 /* Get the column information */
3178 epan_dissect_run(&edt, cf->cd_t, &cf->phdr, frame_tvbuff_new_buffer(fdata, &cf->buf), fdata,
3181 /* Find the Info column */
3182 for (colx = 0; colx < cf->cinfo.num_cols; colx++) {
3183 if (cf->cinfo.fmt_matx[colx][COL_INFO]) {
3184 /* Found it. See if we match. */
3185 info_column = edt.pi.cinfo->col_data[colx];
3186 info_column_len = strlen(info_column);
3187 for (i = 0; i < info_column_len; i++) {
3188 c_char = info_column[i];
3190 c_char = g_ascii_toupper(c_char);
3191 if (c_char == string[c_match]) {
3193 if (c_match == string_len) {
3194 result = MR_MATCHED;
3203 epan_dissect_cleanup(&edt);
3210 } cbs_t; /* "Counted byte string" */
3214 * The current match_* routines only support ASCII case insensitivity and don't
3215 * convert UTF-8 inputs to UTF-16 for matching.
3217 * We could modify them to use the GLib Unicode routines or the International
3218 * Components for Unicode library but it's not apparent that we could do so
3219 * without consuming a lot more CPU and memory or that searching would be
3220 * significantly better.
3224 cf_find_packet_data(capture_file *cf, const guint8 *string, size_t string_size,
3225 search_direction dir)
3230 info.data_len = string_size;
3232 /* String or hex search? */
3234 /* String search - what type of string? */
3235 switch (cf->scs_type) {
3237 case SCS_NARROW_AND_WIDE:
3238 return find_packet(cf, match_narrow_and_wide, &info, dir);
3241 return find_packet(cf, match_narrow, &info, dir);
3244 return find_packet(cf, match_wide, &info, dir);
3247 g_assert_not_reached();
3251 return find_packet(cf, match_binary, &info, dir);
3255 match_narrow_and_wide(capture_file *cf, frame_data *fdata, void *criterion)
3257 cbs_t *info = (cbs_t *)criterion;
3258 const guint8 *ascii_text = info->data;
3259 size_t textlen = info->data_len;
3260 match_result result;
3267 /* Load the frame's data. */
3268 if (!cf_read_record(cf, fdata)) {
3269 /* Attempt to get the packet failed. */
3273 result = MR_NOTMATCHED;
3274 buf_len = fdata->cap_len;
3275 pd = ws_buffer_start_ptr(&cf->buf);
3277 while (i < buf_len) {
3280 c_char = g_ascii_toupper(c_char);
3281 if (c_char != '\0') {
3282 if (c_char == ascii_text[c_match]) {
3284 if (c_match == textlen) {
3285 result = MR_MATCHED;
3286 cf->search_pos = i; /* Save the position of the last character
3287 for highlighting the field. */
3292 g_assert(i>=c_match);
3293 i -= (guint32)c_match;
3303 match_narrow(capture_file *cf, frame_data *fdata, void *criterion)
3306 cbs_t *info = (cbs_t *)criterion;
3307 const guint8 *ascii_text = info->data;
3308 size_t textlen = info->data_len;
3309 match_result result;
3315 /* Load the frame's data. */
3316 if (!cf_read_record(cf, fdata)) {
3317 /* Attempt to get the packet failed. */
3321 result = MR_NOTMATCHED;
3322 buf_len = fdata->cap_len;
3323 pd = ws_buffer_start_ptr(&cf->buf);
3325 while (i < buf_len) {
3328 c_char = g_ascii_toupper(c_char);
3329 if (c_char == ascii_text[c_match]) {
3331 if (c_match == textlen) {
3332 result = MR_MATCHED;
3333 cf->search_pos = i; /* Save the position of the last character
3334 for highlighting the field. */
3339 g_assert(i>=c_match);
3340 i -= (guint32)c_match;
3350 match_wide(capture_file *cf, frame_data *fdata, void *criterion)
3352 cbs_t *info = (cbs_t *)criterion;
3353 const guint8 *ascii_text = info->data;
3354 size_t textlen = info->data_len;
3355 match_result result;
3362 /* Load the frame's data. */
3363 if (!cf_read_record(cf, fdata)) {
3364 /* Attempt to get the packet failed. */
3368 result = MR_NOTMATCHED;
3369 buf_len = fdata->cap_len;
3370 pd = ws_buffer_start_ptr(&cf->buf);
3372 while (i < buf_len) {
3375 c_char = g_ascii_toupper(c_char);
3376 if (c_char == ascii_text[c_match]) {
3378 if (c_match == textlen) {
3379 result = MR_MATCHED;
3380 cf->search_pos = i; /* Save the position of the last character
3381 for highlighting the field. */
3387 g_assert(i>=(c_match*2));
3388 i -= (guint32)c_match*2;
3397 match_binary(capture_file *cf, frame_data *fdata, void *criterion)
3399 cbs_t *info = (cbs_t *)criterion;
3400 const guint8 *binary_data = info->data;
3401 size_t datalen = info->data_len;
3402 match_result result;
3408 /* Load the frame's data. */
3409 if (!cf_read_record(cf, fdata)) {
3410 /* Attempt to get the packet failed. */
3414 result = MR_NOTMATCHED;
3415 buf_len = fdata->cap_len;
3416 pd = ws_buffer_start_ptr(&cf->buf);
3418 while (i < buf_len) {
3419 if (pd[i] == binary_data[c_match]) {
3421 if (c_match == datalen) {
3422 result = MR_MATCHED;
3423 cf->search_pos = i; /* Save the position of the last character
3424 for highlighting the field. */
3429 g_assert(i>=c_match);
3430 i -= (guint32)c_match;
3439 cf_find_packet_dfilter(capture_file *cf, dfilter_t *sfcode,
3440 search_direction dir)
3442 return find_packet(cf, match_dfilter, sfcode, dir);
3446 cf_find_packet_dfilter_string(capture_file *cf, const char *filter,
3447 search_direction dir)
3452 if (!dfilter_compile(filter, &sfcode, NULL)) {
3454 * XXX - this shouldn't happen, as the filter string is machine
3459 if (sfcode == NULL) {
3461 * XXX - this shouldn't happen, as the filter string is machine
3466 result = find_packet(cf, match_dfilter, sfcode, dir);
3467 dfilter_free(sfcode);
3472 match_dfilter(capture_file *cf, frame_data *fdata, void *criterion)
3474 dfilter_t *sfcode = (dfilter_t *)criterion;
3476 match_result result;
3478 /* Load the frame's data. */
3479 if (!cf_read_record(cf, fdata)) {
3480 /* Attempt to get the packet failed. */
3484 epan_dissect_init(&edt, cf->epan, TRUE, FALSE);
3485 epan_dissect_prime_dfilter(&edt, sfcode);
3486 epan_dissect_run(&edt, cf->cd_t, &cf->phdr, frame_tvbuff_new_buffer(fdata, &cf->buf), fdata, NULL);
3487 result = dfilter_apply_edt(sfcode, &edt) ? MR_MATCHED : MR_NOTMATCHED;
3488 epan_dissect_cleanup(&edt);
3493 cf_find_packet_marked(capture_file *cf, search_direction dir)
3495 return find_packet(cf, match_marked, NULL, dir);
3499 match_marked(capture_file *cf _U_, frame_data *fdata, void *criterion _U_)
3501 return fdata->flags.marked ? MR_MATCHED : MR_NOTMATCHED;
3505 cf_find_packet_time_reference(capture_file *cf, search_direction dir)
3507 return find_packet(cf, match_time_reference, NULL, dir);
3511 match_time_reference(capture_file *cf _U_, frame_data *fdata, void *criterion _U_)
3513 return fdata->flags.ref_time ? MR_MATCHED : MR_NOTMATCHED;
3517 find_packet(capture_file *cf,
3518 match_result (*match_function)(capture_file *, frame_data *, void *),
3519 void *criterion, search_direction dir)
3521 frame_data *start_fd;
3524 frame_data *new_fd = NULL;
3525 progdlg_t *progbar = NULL;
3530 GTimeVal start_time;
3531 gchar status_str[100];
3532 int progbar_nextstep;
3533 int progbar_quantum;
3535 match_result result;
3537 start_fd = cf->current_frame;
3538 if (start_fd != NULL) {
3539 /* Iterate through the list of packets, starting at the packet we've
3540 picked, calling a routine to run the filter on the packet, see if
3541 it matches, and stop if so. */
3543 framenum = start_fd->num;
3545 /* Update the progress bar when it gets to this value. */
3546 progbar_nextstep = 0;
3547 /* When we reach the value that triggers a progress bar update,
3548 bump that value by this amount. */
3549 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
3550 /* Progress so far. */
3554 g_get_current_time(&start_time);
3556 title = cf->sfilter?cf->sfilter:"";
3558 /* Create the progress bar if necessary.
3559 We check on every iteration of the loop, so that it takes no
3560 longer than the standard time to create it (otherwise, for a
3561 large file, we might take considerably longer than that standard
3562 time in order to get to the next progress bar step). */
3563 if (progbar == NULL)
3564 progbar = delayed_create_progress_dlg(cf->window, "Searching", title,
3565 FALSE, &stop_flag, &start_time, progbar_val);
3567 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
3568 when we update it, we have to run the GTK+ main loop to get it
3569 to repaint what's pending, and doing so may involve an "ioctl()"
3570 to see if there's any pending input from an X server, and doing
3571 that for every packet can be costly, especially on a big file. */
3572 if (count >= progbar_nextstep) {
3573 /* let's not divide by zero. I should never be started
3574 * with count == 0, so let's assert that
3576 g_assert(cf->count > 0);
3578 progbar_val = (gfloat) count / cf->count;
3580 if (progbar != NULL) {
3581 g_snprintf(status_str, sizeof(status_str),
3582 "%4u of %u packets", count, cf->count);
3583 update_progress_dlg(progbar, progbar_val, status_str);
3586 progbar_nextstep += progbar_quantum;
3590 /* Well, the user decided to abort the search. Go back to the
3591 frame where we started. */
3596 /* Go past the current frame. */
3597 if (dir == SD_BACKWARD) {
3598 /* Go on to the previous frame. */
3599 if (framenum == 1) {
3601 * XXX - other apps have a bit more of a detailed message
3602 * for this, and instead of offering "OK" and "Cancel",
3603 * they offer things such as "Continue" and "Cancel";
3604 * we need an API for popping up alert boxes with
3605 * {Verb} and "Cancel".
3608 if (prefs.gui_find_wrap)
3610 statusbar_push_temporary_msg("Search reached the beginning. Continuing at end.");
3611 framenum = cf->count; /* wrap around */
3615 statusbar_push_temporary_msg("Search reached the beginning.");
3616 framenum = start_fd->num; /* stay on previous packet */
3621 /* Go on to the next frame. */
3622 if (framenum == cf->count) {
3623 if (prefs.gui_find_wrap)
3625 statusbar_push_temporary_msg("Search reached the end. Continuing at beginning.");
3626 framenum = 1; /* wrap around */
3630 statusbar_push_temporary_msg("Search reached the end.");
3631 framenum = start_fd->num; /* stay on previous packet */
3636 fdata = frame_data_sequence_find(cf->frames, framenum);
3640 /* Is this packet in the display? */
3641 if (fdata->flags.passed_dfilter) {
3642 /* Yes. Does it match the search criterion? */
3643 result = (*match_function)(cf, fdata, criterion);
3644 if (result == MR_ERROR) {
3645 /* Error; our caller has reported the error. Go back to the frame
3646 where we started. */
3649 } else if (result == MR_MATCHED) {
3650 /* Yes. Go to the new frame. */
3656 if (fdata == start_fd) {
3657 /* We're back to the frame we were on originally, and that frame
3658 doesn't match the search filter. The search failed. */
3663 /* We're done scanning the packets; destroy the progress bar if it
3665 if (progbar != NULL)
3666 destroy_progress_dlg(progbar);
3669 if (new_fd != NULL) {
3670 /* Find and select */
3671 cf->search_in_progress = TRUE;
3672 found = packet_list_select_row_from_data(new_fd);
3673 cf->search_in_progress = FALSE;
3674 cf->search_pos = 0; /* Reset the position */
3676 /* We didn't find a row corresponding to this frame.
3677 This means that the frame isn't being displayed currently,
3678 so we can't select it. */
3679 simple_message_box(ESD_TYPE_INFO, NULL,
3680 "The capture file is probably not fully dissected.",
3681 "End of capture exceeded.");
3684 return TRUE; /* success */
3686 return FALSE; /* failure */
3690 cf_goto_frame(capture_file *cf, guint fnumber)
3694 fdata = frame_data_sequence_find(cf->frames, fnumber);
3696 if (fdata == NULL) {
3697 /* we didn't find a packet with that packet number */
3698 statusbar_push_temporary_msg("There is no packet number %u.", fnumber);
3699 return FALSE; /* we failed to go to that packet */
3701 if (!fdata->flags.passed_dfilter) {
3702 /* that packet currently isn't displayed */
3703 /* XXX - add it to the set of displayed packets? */
3704 statusbar_push_temporary_msg("Packet number %u isn't displayed.", fnumber);
3705 return FALSE; /* we failed to go to that packet */
3708 if (!packet_list_select_row_from_data(fdata)) {
3709 /* We didn't find a row corresponding to this frame.
3710 This means that the frame isn't being displayed currently,
3711 so we can't select it. */
3712 simple_message_box(ESD_TYPE_INFO, NULL,
3713 "The capture file is probably not fully dissected.",
3714 "End of capture exceeded.");
3717 return TRUE; /* we got to that packet */
3721 cf_goto_top_frame(void)
3723 /* Find and select */
3724 packet_list_select_first_row();
3725 return TRUE; /* we got to that packet */
3729 cf_goto_bottom_frame(void)
3731 /* Find and select */
3732 packet_list_select_last_row();
3733 return TRUE; /* we got to that packet */
3737 * Go to frame specified by currently selected protocol tree item.
3740 cf_goto_framenum(capture_file *cf)
3742 header_field_info *hfinfo;
3745 if (cf->finfo_selected) {
3746 hfinfo = cf->finfo_selected->hfinfo;
3748 if (hfinfo->type == FT_FRAMENUM) {
3749 framenum = fvalue_get_uinteger(&cf->finfo_selected->value);
3751 return cf_goto_frame(cf, framenum);
3758 /* Select the packet on a given row. */
3760 cf_select_packet(capture_file *cf, int row)
3762 epan_dissect_t *old_edt;
3765 /* Get the frame data struct pointer for this frame */
3766 fdata = packet_list_get_row_data(row);
3768 if (fdata == NULL) {
3769 /* XXX - if a GtkCList's selection mode is GTK_SELECTION_BROWSE, when
3770 the first entry is added to it by "real_insert_row()", that row
3771 is selected (see "real_insert_row()", in "ui/gtk/gtkclist.c", in both
3772 our version and the vanilla GTK+ version).
3774 This means that a "select-row" signal is emitted; this causes
3775 "packet_list_select_cb()" to be called, which causes "cf_select_packet()"
3778 "cf_select_packet()" fetches, above, the data associated with the
3779 row that was selected; however, as "gtk_clist_append()", which
3780 called "real_insert_row()", hasn't yet returned, we haven't yet
3781 associated any data with that row, so we get back a null pointer.
3783 We can't assume that there's only one frame in the frame list,
3784 either, as we may be filtering the display.
3786 We therefore assume that, if "row" is 0, i.e. the first row
3787 is being selected, and "cf->first_displayed" equals
3788 "cf->last_displayed", i.e. there's only one frame being
3789 displayed, that frame is the frame we want.
3791 This means we have to set "cf->first_displayed" and
3792 "cf->last_displayed" before adding the row to the
3793 GtkCList; see the comment in "add_packet_to_packet_list()". */
3795 if (row == 0 && cf->first_displayed == cf->last_displayed)
3796 fdata = frame_data_sequence_find(cf->frames, cf->first_displayed);
3799 /* If fdata _still_ isn't set simply give up. */
3800 if (fdata == NULL) {
3804 /* Get the data in that frame. */
3805 if (!cf_read_record (cf, fdata)) {
3809 /* Record that this frame is the current frame. */
3810 cf->current_frame = fdata;
3811 cf->current_row = row;
3814 /* Create the logical protocol tree. */
3815 /* We don't need the columns here. */
3816 cf->edt = epan_dissect_new(cf->epan, TRUE, TRUE);
3818 tap_build_interesting(cf->edt);
3819 epan_dissect_run(cf->edt, cf->cd_t, &cf->phdr, frame_tvbuff_new_buffer(cf->current_frame, &cf->buf),
3820 cf->current_frame, NULL);
3822 dfilter_macro_build_ftv_cache(cf->edt->tree);
3824 cf_callback_invoke(cf_cb_packet_selected, cf);
3826 if (old_edt != NULL)
3827 epan_dissect_free(old_edt);
3831 /* Unselect the selected packet, if any. */
3833 cf_unselect_packet(capture_file *cf)
3835 epan_dissect_t *old_edt = cf->edt;
3839 /* No packet is selected. */
3840 cf->current_frame = NULL;
3841 cf->current_row = 0;
3843 cf_callback_invoke(cf_cb_packet_unselected, cf);
3845 /* No protocol tree means no selected field. */
3846 cf_unselect_field(cf);
3848 /* Destroy the epan_dissect_t for the unselected packet. */
3849 if (old_edt != NULL)
3850 epan_dissect_free(old_edt);
3853 /* Unset the selected protocol tree field, if any. */
3855 cf_unselect_field(capture_file *cf)
3857 cf->finfo_selected = NULL;
3859 cf_callback_invoke(cf_cb_field_unselected, cf);
3863 * Mark a particular frame.
3866 cf_mark_frame(capture_file *cf, frame_data *frame)
3868 if (! frame->flags.marked) {
3869 frame->flags.marked = TRUE;
3870 if (cf->count > cf->marked_count)
3876 * Unmark a particular frame.
3879 cf_unmark_frame(capture_file *cf, frame_data *frame)
3881 if (frame->flags.marked) {
3882 frame->flags.marked = FALSE;
3883 if (cf->marked_count > 0)
3889 * Ignore a particular frame.
3892 cf_ignore_frame(capture_file *cf, frame_data *frame)
3894 if (! frame->flags.ignored) {
3895 frame->flags.ignored = TRUE;
3896 if (cf->count > cf->ignored_count)
3897 cf->ignored_count++;
3902 * Un-ignore a particular frame.
3905 cf_unignore_frame(capture_file *cf, frame_data *frame)
3907 if (frame->flags.ignored) {
3908 frame->flags.ignored = FALSE;
3909 if (cf->ignored_count > 0)
3910 cf->ignored_count--;
3915 * Read the comment in SHB block
3919 cf_read_shb_comment(capture_file *cf)
3921 wtapng_section_t *shb_inf;
3922 const gchar *temp_str;
3924 /* Get info from SHB */
3925 shb_inf = wtap_file_get_shb_info(cf->wth);
3926 if (shb_inf == NULL)
3928 temp_str = shb_inf->opt_comment;
3936 cf_update_capture_comment(capture_file *cf, gchar *comment)
3938 wtapng_section_t *shb_inf;
3940 /* Get info from SHB */
3941 shb_inf = wtap_file_get_shb_info(cf->wth);
3943 /* See if the comment has changed or not */
3944 if (shb_inf && shb_inf->opt_comment) {
3945 if (strcmp(shb_inf->opt_comment, comment) == 0) {
3954 /* The comment has changed, let's update it */
3955 wtap_write_shb_comment(cf->wth, comment);
3956 /* Mark the file as having unsaved changes */
3957 cf->unsaved_changes = TRUE;
3961 cf_get_user_packet_comment(capture_file *cf, const frame_data *fd)
3963 if (cf->frames_user_comments)
3964 return (const char *)g_tree_lookup(cf->frames_user_comments, fd);
3971 cf_get_comment(capture_file *cf, const frame_data *fd)
3975 /* fetch user comment */
3976 if (fd->flags.has_user_comment)
3977 return g_strdup(cf_get_user_packet_comment(cf, fd));
3979 /* fetch phdr comment */
3980 if (fd->flags.has_phdr_comment) {
3981 struct wtap_pkthdr phdr; /* Packet header */
3982 Buffer buf; /* Packet data */
3984 wtap_phdr_init(&phdr);
3985 ws_buffer_init(&buf, 1500);
3987 if (!cf_read_record_r(cf, fd, &phdr, &buf))
3988 { /* XXX, what we can do here? */ }
3990 comment = phdr.opt_comment;
3991 wtap_phdr_cleanup(&phdr);
3992 ws_buffer_free(&buf);
3999 frame_cmp(gconstpointer a, gconstpointer b, gpointer user_data _U_)
4001 const frame_data *fdata1 = (const frame_data *) a;
4002 const frame_data *fdata2 = (const frame_data *) b;
4004 return (fdata1->num < fdata2->num) ? -1 :
4005 (fdata1->num > fdata2->num) ? 1 :
4010 cf_set_user_packet_comment(capture_file *cf, frame_data *fd, const gchar *new_comment)
4012 char *pkt_comment = cf_get_comment(cf, fd);
4014 /* Check if the comment has changed */
4015 if (!g_strcmp0(pkt_comment, new_comment)) {
4016 g_free(pkt_comment);
4019 g_free(pkt_comment);
4022 cf->packet_comment_count--;
4025 cf->packet_comment_count++;
4027 fd->flags.has_user_comment = TRUE;
4029 if (!cf->frames_user_comments)
4030 cf->frames_user_comments = g_tree_new_full(frame_cmp, NULL, NULL, g_free);
4032 /* insert new packet comment */
4033 g_tree_replace(cf->frames_user_comments, fd, g_strdup(new_comment));
4035 expert_update_comment_count(cf->packet_comment_count);
4037 /* OK, we have unsaved changes. */
4038 cf->unsaved_changes = TRUE;
4043 * What types of comments does this capture file have?
4046 cf_comment_types(capture_file *cf)
4048 guint32 comment_types = 0;
4050 if (cf_read_shb_comment(cf) != NULL)
4051 comment_types |= WTAP_COMMENT_PER_SECTION;
4052 if (cf->packet_comment_count != 0)
4053 comment_types |= WTAP_COMMENT_PER_PACKET;
4054 return comment_types;
4057 #ifdef WANT_PACKET_EDITOR
4059 g_direct_compare_func(gconstpointer a, gconstpointer b, gpointer user_data _U_)
4070 modified_frame_data_free(gpointer data)
4072 modified_frame_data *mfd = (modified_frame_data *)data;
4079 * Give a frame new, edited data.
4082 cf_set_frame_edited(capture_file *cf, frame_data *fd,
4083 struct wtap_pkthdr *phdr, guint8 *pd)
4085 modified_frame_data *mfd = (modified_frame_data *)g_malloc(sizeof(modified_frame_data));
4090 if (cf->edited_frames == NULL)
4091 cf->edited_frames = g_tree_new_full(g_direct_compare_func, NULL, NULL,
4092 modified_frame_data_free);
4093 g_tree_insert(cf->edited_frames, GINT_TO_POINTER(fd->num), mfd);
4096 /* Mark the file as having unsaved changes */
4097 cf->unsaved_changes = TRUE;
4105 } save_callback_args_t;
4108 * Save a capture to a file, in a particular format, saving either
4109 * all packets, all currently-displayed packets, or all marked packets.
4111 * Returns TRUE if it succeeds, FALSE otherwise; if it fails, it pops
4112 * up a message box for the failure.
4115 save_record(capture_file *cf, frame_data *fdata,
4116 struct wtap_pkthdr *phdr, const guint8 *pd,
4119 save_callback_args_t *args = (save_callback_args_t *)argsp;
4120 struct wtap_pkthdr hdr;
4123 gchar *display_basename;
4124 const char *pkt_comment;
4126 if (fdata->flags.has_user_comment)
4127 pkt_comment = cf_get_user_packet_comment(cf, fdata);
4129 pkt_comment = phdr->opt_comment;
4131 /* init the wtap header for saving */
4132 /* TODO: reuse phdr */
4133 /* XXX - these are the only flags that correspond to data that we have
4134 in the frame_data structure and that matter on a per-packet basis.
4136 For WTAP_HAS_CAP_LEN, either the file format has separate "captured"
4137 and "on the wire" lengths, or it doesn't.
4139 For WTAP_HAS_DROP_COUNT, Wiretap doesn't actually supply the value
4142 For WTAP_HAS_PACK_FLAGS, we currently don't save the FCS length
4143 from the packet flags. */
4144 hdr.rec_type = phdr->rec_type;
4145 hdr.presence_flags = 0;
4146 if (fdata->flags.has_ts)
4147 hdr.presence_flags |= WTAP_HAS_TS;
4148 if (phdr->presence_flags & WTAP_HAS_INTERFACE_ID)
4149 hdr.presence_flags |= WTAP_HAS_INTERFACE_ID;
4150 if (phdr->presence_flags & WTAP_HAS_PACK_FLAGS)
4151 hdr.presence_flags |= WTAP_HAS_PACK_FLAGS;
4152 hdr.ts.secs = fdata->abs_ts.secs;
4153 hdr.ts.nsecs = fdata->abs_ts.nsecs;
4154 hdr.caplen = phdr->caplen;
4155 hdr.len = phdr->len;
4156 hdr.pkt_encap = fdata->lnk_t;
4158 hdr.interface_id = phdr->interface_id; /* identifier of the interface. */
4160 hdr.pack_flags = phdr->pack_flags;
4161 hdr.opt_comment = g_strdup(pkt_comment);
4164 hdr.pseudo_header = phdr->pseudo_header;
4167 hdr.pack_flags = /* XXX - 0 for now (any value for "we don't have it"?) */
4169 /* and save the packet */
4170 if (!wtap_dump(args->pdh, &hdr, pd, &err, &err_info)) {
4172 /* Wiretap error. */
4175 case WTAP_ERR_UNWRITABLE_ENCAP:
4177 * This is a problem with the particular frame we're writing and
4178 * the file type and subtype we're writing; note that, and report
4179 * the frame number and file type/subtype.
4181 simple_error_message_box(
4182 "Frame %u has a network type that can't be saved in a \"%s\" file.",
4183 fdata->num, wtap_file_type_subtype_string(args->file_type));
4186 case WTAP_ERR_PACKET_TOO_LARGE:
4188 * This is a problem with the particular frame we're writing and
4189 * the file type and subtype we're writing; note that, and report
4190 * the frame number and file type/subtype.
4192 simple_error_message_box(
4193 "Frame %u is larger than Wireshark supports in a \"%s\" file.",
4194 fdata->num, wtap_file_type_subtype_string(args->file_type));
4197 case WTAP_ERR_UNWRITABLE_REC_TYPE:
4199 * This is a problem with the particular record we're writing and
4200 * the file type and subtype we're writing; note that, and report
4201 * the record number and file type/subtype.
4203 simple_error_message_box(
4204 "Record %u has a record type that can't be saved in a \"%s\" file.",
4205 fdata->num, wtap_file_type_subtype_string(args->file_type));
4208 case WTAP_ERR_UNWRITABLE_REC_DATA:
4210 * This is a problem with the particular frame we're writing and
4211 * the file type and subtype we're writing; note that, and report
4212 * the frame number and file type/subtype.
4214 simple_error_message_box(
4215 "Record %u has data that can't be saved in a \"%s\" file.\n(%s)",
4216 fdata->num, wtap_file_type_subtype_string(args->file_type),
4217 err_info != NULL ? err_info : "no information supplied");
4222 display_basename = g_filename_display_basename(args->fname);
4223 simple_error_message_box(
4224 "An error occurred while writing to the file \"%s\": %s.",
4225 display_basename, wtap_strerror(err));
4226 g_free(display_basename);
4231 write_failure_alert_box(args->fname, err);
4236 g_free(hdr.opt_comment);
4241 * Can this capture file be written out in any format using Wiretap
4242 * rather than by copying the raw data?
4245 cf_can_write_with_wiretap(capture_file *cf)
4247 /* We don't care whether we support the comments in this file or not;
4248 if we can't, we'll offer the user the option of discarding the
4250 return wtap_dump_can_write(cf->linktypes, 0);
4254 * Should we let the user do a save?
4258 * the file has unsaved changes, and we can save it in some
4259 * format through Wiretap
4263 * the file is a temporary file and has no unsaved changes (so
4264 * that "saving" it just means copying it).
4266 * XXX - we shouldn't allow files to be edited if they can't be saved,
4267 * so cf->unsaved_changes should be true only if the file can be saved.
4269 * We don't care whether we support the comments in this file or not;
4270 * if we can't, we'll offer the user the option of discarding the
4274 cf_can_save(capture_file *cf)
4276 if (cf->unsaved_changes && wtap_dump_can_write(cf->linktypes, 0)) {
4277 /* Saved changes, and we can write it out with Wiretap. */
4281 if (cf->is_tempfile && !cf->unsaved_changes) {
4283 * Temporary file with no unsaved changes, so we can just do a
4289 /* Nothing to save. */
4294 * Should we let the user do a "save as"?
4298 * we can save it in some format through Wiretap
4302 * the file is a temporary file and has no unsaved changes (so
4303 * that "saving" it just means copying it).
4305 * XXX - we shouldn't allow files to be edited if they can't be saved,
4306 * so cf->unsaved_changes should be true only if the file can be saved.
4308 * We don't care whether we support the comments in this file or not;
4309 * if we can't, we'll offer the user the option of discarding the
4313 cf_can_save_as(capture_file *cf)
4315 if (wtap_dump_can_write(cf->linktypes, 0)) {
4316 /* We can write it out with Wiretap. */
4320 if (cf->is_tempfile && !cf->unsaved_changes) {
4322 * Temporary file with no unsaved changes, so we can just do a
4328 /* Nothing to save. */
4333 * Does this file have unsaved data?
4336 cf_has_unsaved_data(capture_file *cf)
4339 * If this is a temporary file, or a file with unsaved changes, it
4342 return cf->is_tempfile || cf->unsaved_changes;
4346 * Quick scan to find packet offsets.
4348 static cf_read_status_t
4349 rescan_file(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
4351 const struct wtap_pkthdr *phdr;
4355 progdlg_t *progbar = NULL;
4359 GTimeVal start_time;
4360 gchar status_str[100];
4361 gint64 progbar_nextstep;
4362 gint64 progbar_quantum;
4367 int displayed_once = 0;
4370 /* Close the old handle. */
4371 wtap_close(cf->wth);
4373 /* Open the new file. */
4374 /* XXX: this will go through all open_routines for a matching one. But right
4375 now rescan_file() is only used when a file is being saved to a different
4376 format than the original, and the user is not given a choice of which
4377 reader to use (only which format to save it in), so doing this makes
4379 cf->wth = wtap_open_offline(fname, WTAP_TYPE_AUTO, err, &err_info, TRUE);
4380 if (cf->wth == NULL) {
4381 cf_open_failure_alert_box(fname, *err, err_info, FALSE, 0);
4382 return CF_READ_ERROR;
4385 /* We're scanning a file whose contents should be the same as what
4386 we had before, so we don't discard dissection state etc.. */
4389 /* Set the file name because we need it to set the follow stream filter.
4390 XXX - is that still true? We need it for other reasons, though,
4392 cf->filename = g_strdup(fname);
4394 /* Indicate whether it's a permanent or temporary file. */
4395 cf->is_tempfile = is_tempfile;
4397 /* No user changes yet. */
4398 cf->unsaved_changes = FALSE;
4400 cf->cd_t = wtap_file_type_subtype(cf->wth);
4401 cf->linktypes = g_array_sized_new(FALSE, FALSE, (guint) sizeof(int), 1);
4403 cf->snap = wtap_snapshot_length(cf->wth);
4404 if (cf->snap == 0) {
4405 /* Snapshot length not known. */
4406 cf->has_snap = FALSE;
4407 cf->snap = WTAP_MAX_PACKET_SIZE;
4409 cf->has_snap = TRUE;
4411 name_ptr = g_filename_display_basename(cf->filename);
4413 cf_callback_invoke(cf_cb_file_rescan_started, cf);
4415 /* Record whether the file is compressed.
4416 XXX - do we know this at open time? */
4417 cf->iscompressed = wtap_iscompressed(cf->wth);
4419 /* Find the size of the file. */
4420 size = wtap_file_size(cf->wth, NULL);
4422 /* Update the progress bar when it gets to this value. */
4423 progbar_nextstep = 0;
4424 /* When we reach the value that triggers a progress bar update,
4425 bump that value by this amount. */
4427 progbar_quantum = size/N_PROGBAR_UPDATES;
4428 if (progbar_quantum < MIN_QUANTUM)
4429 progbar_quantum = MIN_QUANTUM;
4431 progbar_quantum = 0;
4434 g_get_current_time(&start_time);
4437 phdr = wtap_phdr(cf->wth);
4438 while ((wtap_read(cf->wth, err, &err_info, &data_offset))) {
4440 fdata = frame_data_sequence_find(cf->frames, framenum);
4441 fdata->file_off = data_offset;
4444 cf->f_datalen = wtap_read_so_far(cf->wth);
4446 /* Create the progress bar if necessary.
4447 * Check whether it should be created or not every MIN_NUMBER_OF_PACKET
4449 if ((progbar == NULL) && !(count % MIN_NUMBER_OF_PACKET)) {
4450 progbar_val = calc_progbar_val(cf, size, cf->f_datalen, status_str, sizeof(status_str));
4451 progbar = delayed_create_progress_dlg(cf->window, "Rescanning", name_ptr,
4452 TRUE, &stop_flag, &start_time, progbar_val);
4455 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
4456 when we update it, we have to run the GTK+ main loop to get it
4457 to repaint what's pending, and doing so may involve an "ioctl()"
4458 to see if there's any pending input from an X server, and doing
4459 that for every packet can be costly, especially on a big file. */
4460 if (cf->f_datalen >= progbar_nextstep) {
4461 if (progbar != NULL) {
4462 progbar_val = calc_progbar_val(cf, size, cf->f_datalen, status_str, sizeof(status_str));
4463 /* update the packet bar content on the first run or frequently on very large files */
4465 if (progbar_quantum > 500000 || displayed_once == 0) {
4466 if ((auto_scroll_live || displayed_once == 0 || cf->displayed_count < 1000) && cf->count != 0) {
4468 packets_bar_update();
4471 #endif /* HAVE_LIBPCAP */
4472 update_progress_dlg(progbar, progbar_val, status_str);
4474 progbar_nextstep += progbar_quantum;
4479 /* Well, the user decided to abort the rescan. Sadly, as this
4480 isn't a reread, recovering is difficult, so we'll just
4481 close the current capture. */
4485 /* Add this packet's link-layer encapsulation type to cf->linktypes, if
4486 it's not already there.
4487 XXX - yes, this is O(N), so if every packet had a different
4488 link-layer encapsulation type, it'd be O(N^2) to read the file, but
4489 there are probably going to be a small number of encapsulation types
4491 cf_add_encapsulation_type(cf, phdr->pkt_encap);
4494 /* Free the display name */
4497 /* We're done reading the file; destroy the progress bar if it was created. */
4498 if (progbar != NULL)
4499 destroy_progress_dlg(progbar);
4501 /* We're done reading sequentially through the file. */
4502 cf->state = FILE_READ_DONE;
4504 /* Close the sequential I/O side, to free up memory it requires. */
4505 wtap_sequential_close(cf->wth);
4507 /* compute the time it took to load the file */
4508 compute_elapsed(cf, &start_time);
4510 /* Set the file encapsulation type now; we don't know what it is until
4511 we've looked at all the packets, as we don't know until then whether
4512 there's more than one type (and thus whether it's
4513 WTAP_ENCAP_PER_PACKET). */
4514 cf->lnk_t = wtap_file_encap(cf->wth);
4516 cf_callback_invoke(cf_cb_file_rescan_finished, cf);
4519 /* Our caller will give up at this point. */
4520 return CF_READ_ABORTED;
4524 /* Put up a message box noting that the read failed somewhere along
4525 the line. Don't throw out the stuff we managed to read, though,
4529 case WTAP_ERR_UNSUPPORTED:
4530 simple_error_message_box(
4531 "The capture file contains record data that Wireshark doesn't support.\n(%s)",
4532 err_info != NULL ? err_info : "no information supplied");
4536 case WTAP_ERR_SHORT_READ:
4537 simple_error_message_box(
4538 "The capture file appears to have been cut short"
4539 " in the middle of a packet.");
4542 case WTAP_ERR_BAD_FILE:
4543 simple_error_message_box(
4544 "The capture file appears to be damaged or corrupt.\n(%s)",
4545 err_info != NULL ? err_info : "no information supplied");
4549 case WTAP_ERR_DECOMPRESS:
4550 simple_error_message_box(
4551 "The compressed capture file appears to be damaged or corrupt.\n"
4553 err_info != NULL ? err_info : "no information supplied");
4558 simple_error_message_box(
4559 "An error occurred while reading the"
4560 " capture file: %s.", wtap_strerror(*err));
4563 return CF_READ_ERROR;
4569 cf_save_records(capture_file *cf, const char *fname, guint save_format,
4570 gboolean compressed, gboolean discard_comments,
4571 gboolean dont_reopen)
4574 gchar *fname_new = NULL;
4577 addrinfo_lists_t *addr_lists;
4581 gchar *display_basename;
4588 save_callback_args_t callback_args;
4590 cf_callback_invoke(cf_cb_file_save_started, (gpointer)fname);
4592 addr_lists = get_addrinfo_list();
4594 if (save_format == cf->cd_t && compressed == cf->iscompressed
4595 && !discard_comments && !cf->unsaved_changes
4596 && !(addr_lists && wtap_dump_has_name_resolution(save_format))) {
4597 /* We're saving in the format it's already in, and we're
4598 not discarding comments, and there are no changes we have
4599 in memory that aren't saved to the file, and we have no name
4600 resolution blocks to write, so we can just move or copy the raw data. */
4602 if (cf->is_tempfile) {
4603 /* The file being saved is a temporary file from a live
4604 capture, so it doesn't need to stay around under that name;
4605 first, try renaming the capture buffer file to the new name.
4606 This acts as a "safe save", in that, if the file already
4607 exists, the existing file will be removed only if the rename
4610 Sadly, on Windows, as we have the current capture file
4611 open, even MoveFileEx() with MOVEFILE_REPLACE_EXISTING
4612 (to cause the rename to remove an existing target), as
4613 done by ws_stdio_rename() (ws_rename() is #defined to
4614 be ws_stdio_rename() on Windows) will fail.
4616 According to the MSDN documentation for CreateFile(), if,
4617 when we open a capture file, we were to directly do a CreateFile(),
4618 opening with FILE_SHARE_DELETE|FILE_SHARE_READ, and then
4619 convert it to a file descriptor with _open_osfhandle(),
4620 that would allow the file to be renamed out from under us.
4622 However, that doesn't work in practice. Perhaps the problem
4623 is that the process doing the rename is the process that
4624 has the file open. */
4626 if (ws_rename(cf->filename, fname) == 0) {
4627 /* That succeeded - there's no need to copy the source file. */
4628 how_to_save = SAVE_WITH_MOVE;
4630 if (errno == EXDEV) {
4631 /* They're on different file systems, so we have to copy the
4633 how_to_save = SAVE_WITH_COPY;
4635 /* The rename failed, but not because they're on different
4636 file systems - put up an error message. (Or should we
4637 just punt and try to copy? The only reason why I'd
4638 expect the rename to fail and the copy to succeed would
4639 be if we didn't have permission to remove the file from
4640 the temporary directory, and that might be fixable - but
4641 is it worth requiring the user to go off and fix it?) */
4642 cf_rename_failure_alert_box(fname, errno);
4647 how_to_save = SAVE_WITH_COPY;
4650 /* It's a permanent file, so we should copy it, and not remove the
4652 how_to_save = SAVE_WITH_COPY;
4655 if (how_to_save == SAVE_WITH_COPY) {
4656 /* Copy the file, if we haven't moved it. If we're overwriting
4657 an existing file, we do it with a "safe save", by writing
4658 to a new file and, if the write succeeds, renaming the
4659 new file on top of the old file. */
4660 if (file_exists(fname)) {
4661 fname_new = g_strdup_printf("%s~", fname);
4662 if (!copy_file_binary_mode(cf->filename, fname_new))
4665 if (!copy_file_binary_mode(cf->filename, fname))
4670 /* Either we're saving in a different format or we're saving changes,
4671 such as added, modified, or removed comments, that haven't yet
4672 been written to the underlying file; we can't do that by copying
4673 or moving the capture file, we have to do it by writing the packets
4676 wtapng_section_t *shb_hdr = NULL;
4677 wtapng_iface_descriptions_t *idb_inf = NULL;
4680 shb_hdr = wtap_file_get_shb_info(cf->wth);
4681 idb_inf = wtap_file_get_idb_info(cf->wth);
4683 /* Determine what file encapsulation type we should use. */
4684 encap = wtap_dump_file_encap_type(cf->linktypes);
4686 if (file_exists(fname)) {
4687 /* We're overwriting an existing file; write out to a new file,
4688 and, if that succeeds, rename the new file on top of the
4689 old file. That makes this a "safe save", so that we don't
4690 lose the old file if we have a problem writing out the new
4691 file. (If the existing file is the current capture file,
4692 we *HAVE* to do that, otherwise we're overwriting the file
4693 from which we're reading the packets that we're writing!) */
4694 fname_new = g_strdup_printf("%s~", fname);
4695 pdh = wtap_dump_open_ng(fname_new, save_format, encap, cf->snap,
4696 compressed, shb_hdr, idb_inf, &err);
4698 pdh = wtap_dump_open_ng(fname, save_format, encap, cf->snap,
4699 compressed, shb_hdr, idb_inf, &err);
4705 cf_open_failure_alert_box(fname, err, NULL, TRUE, save_format);
4709 /* Add address resolution */
4710 wtap_dump_set_addrinfo_list(pdh, addr_lists);
4712 /* Iterate through the list of packets, processing all the packets. */
4713 callback_args.pdh = pdh;
4714 callback_args.fname = fname;
4715 callback_args.file_type = save_format;
4716 switch (process_specified_records(cf, NULL, "Saving", "packets",
4717 TRUE, save_record, &callback_args)) {
4720 /* Completed successfully. */
4724 /* The user decided to abort the saving.
4725 If we're writing to a temporary file, remove it.
4726 XXX - should we do so even if we're not writing to a
4728 wtap_dump_close(pdh, &err);
4729 if (fname_new != NULL)
4730 ws_unlink(fname_new);
4731 cf_callback_invoke(cf_cb_file_save_stopped, NULL);
4732 return CF_WRITE_ABORTED;
4735 /* Error while saving.
4736 If we're writing to a temporary file, remove it. */
4737 if (fname_new != NULL)
4738 ws_unlink(fname_new);
4739 wtap_dump_close(pdh, &err);
4743 if (!wtap_dump_close(pdh, &err)) {
4744 cf_close_failure_alert_box(fname, err);
4748 how_to_save = SAVE_WITH_WTAP;
4751 if (fname_new != NULL) {
4752 /* We wrote out to fname_new, and should rename it on top of
4753 fname. fname_new is now closed, so that should be possible even
4754 on Windows. However, on Windows, we first need to close whatever
4755 file descriptors we have open for fname. */
4757 wtap_fdclose(cf->wth);
4759 /* Now do the rename. */
4760 if (ws_rename(fname_new, fname) == -1) {
4761 /* Well, the rename failed. */
4762 cf_rename_failure_alert_box(fname, errno);
4764 /* Attempt to reopen the random file descriptor using the
4765 current file's filename. (At this point, the sequential
4766 file descriptor is closed.) */
4767 if (!wtap_fdreopen(cf->wth, cf->filename, &err)) {
4768 /* Oh, well, we're screwed. */
4769 display_basename = g_filename_display_basename(cf->filename);
4770 simple_error_message_box(
4771 file_open_error_message(err, FALSE), display_basename);
4772 g_free(display_basename);
4779 cf_callback_invoke(cf_cb_file_save_finished, NULL);
4780 cf->unsaved_changes = FALSE;
4783 switch (how_to_save) {
4785 case SAVE_WITH_MOVE:
4786 /* We just moved the file, so the wtap structure refers to the
4787 new file, and all the information other than the filename
4788 and the "is temporary" status applies to the new file; just
4790 g_free(cf->filename);
4791 cf->filename = g_strdup(fname);
4792 cf->is_tempfile = FALSE;
4793 cf_callback_invoke(cf_cb_file_fast_save_finished, cf);
4796 case SAVE_WITH_COPY:
4797 /* We just copied the file, s all the information other than
4798 the wtap structure, the filename, and the "is temporary"
4799 status applies to the new file; just update that. */
4800 wtap_close(cf->wth);
4801 /* Although we're just "copying" and then opening the copy, it will
4802 try all open_routine readers to open the copy, so we need to
4803 reset the cfile's open_type. */
4804 cf->open_type = WTAP_TYPE_AUTO;
4805 cf->wth = wtap_open_offline(fname, WTAP_TYPE_AUTO, &err, &err_info, TRUE);
4806 if (cf->wth == NULL) {
4807 cf_open_failure_alert_box(fname, err, err_info, FALSE, 0);
4810 g_free(cf->filename);
4811 cf->filename = g_strdup(fname);
4812 cf->is_tempfile = FALSE;
4814 cf_callback_invoke(cf_cb_file_fast_save_finished, cf);
4817 case SAVE_WITH_WTAP:
4818 /* Open and read the file we saved to.
4820 XXX - this is somewhat of a waste; we already have the
4821 packets, all this gets us is updated file type information
4822 (which we could just stuff into "cf"), and having the new
4823 file be the one we have opened and from which we're reading
4824 the data, and it means we have to spend time opening and
4825 reading the file, which could be a significant amount of
4826 time if the file is large.
4828 If the capture-file-writing code were to return the
4829 seek offset of each packet it writes, we could save that
4830 in the frame_data structure for the frame, and just open
4831 the file without reading it again...
4833 ...as long as, for gzipped files, the process of writing
4834 out the file *also* generates the information needed to
4835 support fast random access to the compressed file. */
4836 /* rescan_file will cause us to try all open_routines, so
4837 reset cfile's open_type */
4838 cf->open_type = WTAP_TYPE_AUTO;
4839 if (rescan_file(cf, fname, FALSE, &err) != CF_READ_OK) {
4840 /* The rescan failed; just close the file. Either
4841 a dialog was popped up for the failure, so the
4842 user knows what happened, or they stopped the
4843 rescan, in which case they know what happened. */
4849 /* If we were told to discard the comments, do so. */
4850 if (discard_comments) {
4851 /* Remove SHB comment, if any. */
4852 wtap_write_shb_comment(cf->wth, NULL);
4854 /* remove all user comments */
4855 for (framenum = 1; framenum <= cf->count; framenum++) {
4856 fdata = frame_data_sequence_find(cf->frames, framenum);
4858 fdata->flags.has_phdr_comment = FALSE;
4859 fdata->flags.has_user_comment = FALSE;
4862 if (cf->frames_user_comments) {
4863 g_tree_destroy(cf->frames_user_comments);
4864 cf->frames_user_comments = NULL;
4867 cf->packet_comment_count = 0;
4873 if (fname_new != NULL) {
4874 /* We were trying to write to a temporary file; get rid of it if it
4875 exists. (We don't care whether this fails, as, if it fails,
4876 there's not much we can do about it. I guess if it failed for
4877 a reason other than "it doesn't exist", we could report an
4878 error, so the user knows there's a junk file that they might
4879 want to clean up.) */
4880 ws_unlink(fname_new);
4883 cf_callback_invoke(cf_cb_file_save_failed, NULL);
4884 return CF_WRITE_ERROR;
4888 cf_export_specified_packets(capture_file *cf, const char *fname,
4889 packet_range_t *range, guint save_format,
4890 gboolean compressed)
4892 gchar *fname_new = NULL;
4895 save_callback_args_t callback_args;
4896 wtapng_section_t *shb_hdr;
4897 wtapng_iface_descriptions_t *idb_inf;
4900 cf_callback_invoke(cf_cb_file_export_specified_packets_started, (gpointer)fname);
4902 packet_range_process_init(range);
4904 /* We're writing out specified packets from the specified capture
4905 file to another file. Even if all captured packets are to be
4906 written, don't special-case the operation - read each packet
4907 and then write it out if it's one of the specified ones. */
4909 shb_hdr = wtap_file_get_shb_info(cf->wth);
4910 idb_inf = wtap_file_get_idb_info(cf->wth);
4912 /* Determine what file encapsulation type we should use. */
4913 encap = wtap_dump_file_encap_type(cf->linktypes);
4915 if (file_exists(fname)) {
4916 /* We're overwriting an existing file; write out to a new file,
4917 and, if that succeeds, rename the new file on top of the
4918 old file. That makes this a "safe save", so that we don't
4919 lose the old file if we have a problem writing out the new
4920 file. (If the existing file is the current capture file,
4921 we *HAVE* to do that, otherwise we're overwriting the file
4922 from which we're reading the packets that we're writing!) */
4923 fname_new = g_strdup_printf("%s~", fname);
4924 pdh = wtap_dump_open_ng(fname_new, save_format, encap, cf->snap,
4925 compressed, shb_hdr, idb_inf, &err);
4927 pdh = wtap_dump_open_ng(fname, save_format, encap, cf->snap,
4928 compressed, shb_hdr, idb_inf, &err);
4934 cf_open_failure_alert_box(fname, err, NULL, TRUE, save_format);
4938 /* Add address resolution */
4939 wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list());
4941 /* Iterate through the list of packets, processing the packets we were
4944 XXX - we've already called "packet_range_process_init(range)", but
4945 "process_specified_records()" will do it again. Fortunately,
4946 that's harmless in this case, as we haven't done anything to
4947 "range" since we initialized it. */
4948 callback_args.pdh = pdh;
4949 callback_args.fname = fname;
4950 callback_args.file_type = save_format;
4951 switch (process_specified_records(cf, range, "Writing", "specified records",
4952 TRUE, save_record, &callback_args)) {
4955 /* Completed successfully. */
4959 /* The user decided to abort the saving.
4960 If we're writing to a temporary file, remove it.
4961 XXX - should we do so even if we're not writing to a
4963 wtap_dump_close(pdh, &err);
4964 if (fname_new != NULL)
4965 ws_unlink(fname_new);
4966 cf_callback_invoke(cf_cb_file_export_specified_packets_stopped, NULL);
4967 return CF_WRITE_ABORTED;
4971 /* Error while saving.
4972 If we're writing to a temporary file, remove it. */
4973 if (fname_new != NULL)
4974 ws_unlink(fname_new);
4975 wtap_dump_close(pdh, &err);
4979 if (!wtap_dump_close(pdh, &err)) {
4980 cf_close_failure_alert_box(fname, err);
4984 if (fname_new != NULL) {
4985 /* We wrote out to fname_new, and should rename it on top of
4986 fname; fname is now closed, so that should be possible even
4987 on Windows. Do the rename. */
4988 if (ws_rename(fname_new, fname) == -1) {
4989 /* Well, the rename failed. */
4990 cf_rename_failure_alert_box(fname, errno);
4995 cf_callback_invoke(cf_cb_file_export_specified_packets_finished, NULL);
4999 if (fname_new != NULL) {
5000 /* We were trying to write to a temporary file; get rid of it if it
5001 exists. (We don't care whether this fails, as, if it fails,
5002 there's not much we can do about it. I guess if it failed for
5003 a reason other than "it doesn't exist", we could report an
5004 error, so the user knows there's a junk file that they might
5005 want to clean up.) */
5006 ws_unlink(fname_new);
5009 cf_callback_invoke(cf_cb_file_export_specified_packets_failed, NULL);
5010 return CF_WRITE_ERROR;
5014 cf_open_failure_alert_box(const char *filename, int err, gchar *err_info,
5015 gboolean for_writing, int file_type)
5017 gchar *display_basename;
5020 /* Wiretap error. */
5021 display_basename = g_filename_display_basename(filename);
5024 case WTAP_ERR_NOT_REGULAR_FILE:
5025 simple_error_message_box(
5026 "The file \"%s\" is a \"special file\" or socket or other non-regular file.",
5030 case WTAP_ERR_RANDOM_OPEN_PIPE:
5031 /* Seen only when opening a capture file for reading. */
5032 simple_error_message_box(
5033 "The file \"%s\" is a pipe or FIFO; Wireshark can't read pipe or FIFO files.\n"
5034 "To capture from a pipe or FIFO use wireshark -i -",
5038 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
5039 /* Seen only when opening a capture file for reading. */
5040 simple_error_message_box(
5041 "The file \"%s\" isn't a capture file in a format Wireshark understands.",
5045 case WTAP_ERR_UNSUPPORTED:
5046 /* Seen only when opening a capture file for reading. */
5047 simple_error_message_box(
5048 "The file \"%s\" contains record data that Wireshark doesn't support.\n",
5051 err_info != NULL ? err_info : "no information supplied");
5055 case WTAP_ERR_CANT_WRITE_TO_PIPE:
5056 /* Seen only when opening a capture file for writing. */
5057 simple_error_message_box(
5058 "The file \"%s\" is a pipe, and %s capture files can't be "
5059 "written to a pipe.",
5060 display_basename, wtap_file_type_subtype_string(file_type));
5063 case WTAP_ERR_UNWRITABLE_FILE_TYPE:
5064 /* Seen only when opening a capture file for writing. */
5065 simple_error_message_box(
5066 "Wireshark doesn't support writing capture files in that format.");
5069 case WTAP_ERR_UNWRITABLE_ENCAP:
5070 /* Seen only when opening a capture file for writing. */
5071 simple_error_message_box("Wireshark can't save this capture in that format.");
5074 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
5076 simple_error_message_box(
5077 "Wireshark can't save this capture in that format.");
5079 simple_error_message_box(
5080 "The file \"%s\" is a capture for a network type that Wireshark doesn't support.",
5085 case WTAP_ERR_BAD_FILE:
5086 /* Seen only when opening a capture file for reading. */
5087 simple_error_message_box(
5088 "The file \"%s\" appears to be damaged or corrupt.\n"
5091 err_info != NULL ? err_info : "no information supplied");
5095 case WTAP_ERR_CANT_OPEN:
5097 simple_error_message_box(
5098 "The file \"%s\" could not be created for some unknown reason.",
5101 simple_error_message_box(
5102 "The file \"%s\" could not be opened for some unknown reason.",
5107 case WTAP_ERR_SHORT_READ:
5108 simple_error_message_box(
5109 "The file \"%s\" appears to have been cut short"
5110 " in the middle of a packet or other data.",
5114 case WTAP_ERR_SHORT_WRITE:
5115 simple_error_message_box(
5116 "A full header couldn't be written to the file \"%s\".",
5120 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
5121 simple_error_message_box(
5122 "This file type cannot be written as a compressed file.");
5125 case WTAP_ERR_DECOMPRESS:
5126 simple_error_message_box(
5127 "The compressed file \"%s\" appears to be damaged or corrupt.\n"
5128 "(%s)", display_basename,
5129 err_info != NULL ? err_info : "no information supplied");
5134 simple_error_message_box(
5135 "The file \"%s\" could not be %s: %s.",
5137 for_writing ? "created" : "opened",
5138 wtap_strerror(err));
5141 g_free(display_basename);
5144 open_failure_alert_box(filename, err, for_writing);
5149 * XXX - whether we mention the source pathname, the target pathname,
5150 * or both depends on the error and on what we find if we look for
5151 * one or both of them.
5154 cf_rename_failure_alert_box(const char *filename, int err)
5156 gchar *display_basename;
5158 display_basename = g_filename_display_basename(filename);
5162 /* XXX - should check whether the source exists and, if not,
5163 report it as the problem and, if so, report the destination
5165 simple_error_message_box("The path to the file \"%s\" doesn't exist.",
5170 /* XXX - if we're doing a rename after a safe save, we should
5171 probably say something else. */
5172 simple_error_message_box("You don't have permission to move the capture file to \"%s\".",
5177 /* XXX - this should probably mention both the source and destination
5179 simple_error_message_box("The file \"%s\" could not be moved: %s.",
5180 display_basename, wtap_strerror(err));
5183 g_free(display_basename);
5186 /* Check for write errors - if the file is being written to an NFS server,
5187 a write error may not show up until the file is closed, as NFS clients
5188 might not send writes to the server until the "write()" call finishes,
5189 so that the write may fail on the server but the "write()" may succeed. */
5191 cf_close_failure_alert_box(const char *filename, int err)
5193 gchar *display_basename;
5196 /* Wiretap error. */
5197 display_basename = g_filename_display_basename(filename);
5200 case WTAP_ERR_CANT_CLOSE:
5201 simple_error_message_box(
5202 "The file \"%s\" couldn't be closed for some unknown reason.",
5206 case WTAP_ERR_SHORT_WRITE:
5207 simple_error_message_box(
5208 "Not all the packets could be written to the file \"%s\".",
5213 simple_error_message_box(
5214 "An error occurred while closing the file \"%s\": %s.",
5215 display_basename, wtap_strerror(err));
5218 g_free(display_basename);
5221 We assume that a close error from the OS is really a write error. */
5222 write_failure_alert_box(filename, err);
5226 /* Reload the current capture file. */
5228 cf_reload(capture_file *cf) {
5230 gboolean is_tempfile;
5233 /* If the file could be opened, "cf_open()" calls "cf_close()"
5234 to get rid of state for the old capture file before filling in state
5235 for the new capture file. "cf_close()" will remove the file if
5236 it's a temporary file; we don't want that to happen (for one thing,
5237 it'd prevent subsequent reopens from working). Remember whether it's
5238 a temporary file, mark it as not being a temporary file, and then
5239 reopen it as the type of file it was.
5241 Also, "cf_close()" will free "cf->filename", so we must make
5242 a copy of it first. */
5243 filename = g_strdup(cf->filename);
5244 is_tempfile = cf->is_tempfile;
5245 cf->is_tempfile = FALSE;
5246 if (cf_open(cf, filename, cf->open_type, is_tempfile, &err) == CF_OK) {
5247 switch (cf_read(cf, TRUE)) {
5251 /* Just because we got an error, that doesn't mean we were unable
5252 to read any of the file; we handle what we could get from the
5256 case CF_READ_ABORTED:
5257 /* The user bailed out of re-reading the capture file; the
5258 capture file has been closed - just free the capture file name
5259 string and return (without changing the last containing
5265 /* The open failed, so "cf->is_tempfile" wasn't set to "is_tempfile".
5266 Instead, the file was left open, so we should restore "cf->is_tempfile"
5269 XXX - change the menu? Presumably "cf_open()" will do that;
5270 make sure it does! */
5271 cf->is_tempfile = is_tempfile;
5273 /* "cf_open()" made a copy of the file name we handed it, so
5274 we should free up our copy. */
5284 * indent-tabs-mode: nil
5287 * ex: set shiftwidth=2 tabstop=8 expandtab:
5288 * :indentSize=2:tabSize=8:noTabs=true: