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 cf->stop_flag = FALSE;
412 if (cf->state == FILE_CLOSED)
413 return; /* Nothing to do */
415 /* Die if we're in the middle of reading a file. */
416 g_assert(cf->state != FILE_READ_IN_PROGRESS);
418 cf_callback_invoke(cf_cb_file_closing, cf);
420 /* close things, if not already closed before */
421 color_filters_cleanup();
427 /* We have no file open... */
428 if (cf->filename != NULL) {
429 /* If it's a temporary file, remove it. */
431 ws_unlink(cf->filename);
432 g_free(cf->filename);
435 /* ...which means we have no changes to that file to save. */
436 cf->unsaved_changes = FALSE;
438 /* no open_routine type */
439 cf->open_type = WTAP_TYPE_AUTO;
441 /* Clean up the packet header. */
442 wtap_phdr_cleanup(&cf->phdr);
444 /* Free up the packet buffer. */
445 ws_buffer_free(&cf->buf);
447 dfilter_free(cf->rfcode);
449 if (cf->frames != NULL) {
450 free_frame_data_sequence(cf->frames);
453 #ifdef WANT_PACKET_EDITOR
454 if (cf->edited_frames) {
455 g_tree_destroy(cf->edited_frames);
456 cf->edited_frames = NULL;
459 if (cf->frames_user_comments) {
460 g_tree_destroy(cf->frames_user_comments);
461 cf->frames_user_comments = NULL;
463 cf_unselect_packet(cf); /* nothing to select */
464 cf->first_displayed = 0;
465 cf->last_displayed = 0;
467 /* No frames, no frame selected, no field in that frame selected. */
469 cf->current_frame = 0;
471 cf->finfo_selected = NULL;
473 /* No frame link-layer types, either. */
474 if (cf->linktypes != NULL) {
475 g_array_free(cf->linktypes, TRUE);
476 cf->linktypes = NULL;
479 /* Clear the packet list. */
480 packet_list_freeze();
485 nstime_set_zero(&cf->elapsed_time);
487 reset_tap_listeners();
492 /* We have no file open. */
493 cf->state = FILE_CLOSED;
495 cf_callback_invoke(cf_cb_file_closed, cf);
499 calc_progbar_val(capture_file *cf, gint64 size, gint64 file_pos, gchar *status_str, gulong status_size)
503 progbar_val = (gfloat) file_pos / (gfloat) size;
504 if (progbar_val > 1.0) {
506 /* The file probably grew while we were reading it.
507 * Update file size, and try again.
509 size = wtap_file_size(cf->wth, NULL);
512 progbar_val = (gfloat) file_pos / (gfloat) size;
514 /* If it's still > 1, either "wtap_file_size()" failed (in which
515 * case there's not much we can do about it), or the file
516 * *shrank* (in which case there's not much we can do about
517 * it); just clip the progress value at 1.0.
519 if (progbar_val > 1.0f)
523 g_snprintf(status_str, status_size,
524 "%" G_GINT64_MODIFIER "dKB of %" G_GINT64_MODIFIER "dKB",
525 file_pos / 1024, size / 1024);
531 cf_read(capture_file *cf, gboolean reloading)
536 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();
572 cf->stop_flag = FALSE;
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, &cf->stop_flag, &start_time, progbar_val);
624 progbar = delayed_create_progress_dlg(cf->window, "Loading", name_ptr,
625 TRUE, &cf->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. */
1409 g_get_current_time(&start_time);
1411 /* do the merge (or append) */
1414 in_file = merge_append_read_packet(in_file_count, in_files, &read_err,
1417 in_file = merge_read_packet(in_file_count, in_files, &read_err,
1419 if (in_file == NULL) {
1424 if (read_err != 0) {
1425 /* I/O error reading from in_file */
1426 got_read_error = TRUE;
1430 /* Get the sum of the data offsets in all of the files. */
1432 for (i = 0; i < in_file_count; i++)
1433 data_offset += in_files[i].data_offset;
1435 /* Create the progress bar if necessary.
1436 We check on every iteration of the loop, so that it takes no
1437 longer than the standard time to create it (otherwise, for a
1438 large file, we might take considerably longer than that standard
1439 time in order to get to the next progress bar step). */
1440 if (progbar == NULL) {
1441 progbar = delayed_create_progress_dlg(NULL, "Merging", "files",
1442 FALSE, &stop_flag, &start_time, progbar_val);
1445 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
1446 when we update it, we have to run the GTK+ main loop to get it
1447 to repaint what's pending, and doing so may involve an "ioctl()"
1448 to see if there's any pending input from an X server, and doing
1449 that for every packet can be costly, especially on a big file. */
1450 if (data_offset >= progbar_nextstep) {
1451 /* Get the sum of the seek positions in all of the files. */
1453 for (i = 0; i < in_file_count; i++)
1454 file_pos += wtap_read_so_far(in_files[i].wth);
1455 progbar_val = (gfloat) file_pos / (gfloat) f_len;
1456 if (progbar_val > 1.0f) {
1457 /* Some file probably grew while we were reading it.
1458 That "shouldn't happen", so we'll just clip the progress
1462 if (progbar != NULL) {
1463 g_snprintf(status_str, sizeof(status_str),
1464 "%" G_GINT64_MODIFIER "dKB of %" G_GINT64_MODIFIER "dKB",
1465 file_pos / 1024, f_len / 1024);
1466 update_progress_dlg(progbar, progbar_val, status_str);
1468 progbar_nextstep += progbar_quantum;
1472 /* Well, the user decided to abort the merge. */
1476 /* If we have WTAP_ENCAP_PER_PACKET and the infiles are of type
1477 * WTAP_FILE_TYPE_SUBTYPE_PCAP, we need to set the interface id
1478 * in the paket header = the interface index we used in the IDBs
1479 * interface description for this file(encapsulation type).
1481 if (fake_interface_ids) {
1482 struct wtap_pkthdr *phdr;
1484 phdr = wtap_phdr(in_file->wth);
1485 if (phdr->presence_flags & WTAP_HAS_INTERFACE_ID) {
1486 phdr->interface_id += in_file->interface_id;
1488 phdr->interface_id = in_file->interface_id;
1489 phdr->presence_flags = phdr->presence_flags | WTAP_HAS_INTERFACE_ID;
1492 if (!wtap_dump(pdh, wtap_phdr(in_file->wth),
1493 wtap_buf_ptr(in_file->wth), &write_err, &write_err_info)) {
1494 got_write_error = TRUE;
1499 /* We're done merging the files; destroy the progress bar if it was created. */
1500 if (progbar != NULL)
1501 destroy_progress_dlg(progbar);
1503 merge_close_in_files(in_file_count, in_files);
1504 if (!got_write_error) {
1505 if (!wtap_dump_close(pdh, &write_err))
1506 got_write_error = TRUE;
1509 * We already got a write error; no need to report another
1510 * write error on close.
1512 * Don't overwrite the earlier write error.
1514 (void)wtap_dump_close(pdh, &close_err);
1517 if (got_read_error) {
1519 * Find the file on which we got the error, and report the error.
1521 for (i = 0; i < in_file_count; i++) {
1522 if (in_files[i].state == GOT_ERROR) {
1523 /* Put up a message box noting that a read failed somewhere along
1525 display_basename = g_filename_display_basename(in_files[i].filename);
1528 case WTAP_ERR_SHORT_READ:
1529 simple_error_message_box(
1530 "The capture file %s appears to have been cut short"
1531 " in the middle of a packet.", display_basename);
1534 case WTAP_ERR_BAD_FILE:
1535 simple_error_message_box(
1536 "The capture file %s appears to be damaged or corrupt.\n(%s)",
1537 display_basename, err_info);
1541 case WTAP_ERR_DECOMPRESS:
1542 simple_error_message_box(
1543 "The compressed capture file %s appears to be damaged or corrupt.\n"
1544 "(%s)", display_basename,
1545 err_info != NULL ? err_info : "no information supplied");
1550 simple_error_message_box(
1551 "An error occurred while reading the"
1552 " capture file %s: %s.",
1553 display_basename, wtap_strerror(read_err));
1556 g_free(display_basename);
1561 if (got_write_error) {
1562 /* Put up an alert box for the write error. */
1563 if (write_err < 0) {
1564 /* Wiretap error. */
1565 switch (write_err) {
1567 case WTAP_ERR_UNWRITABLE_ENCAP:
1569 * This is a problem with the particular frame we're writing and
1570 * the file type and subtype we're writing; note that, and report
1571 * the frame number and file type/subtype.
1573 display_basename = g_filename_display_basename(in_file ? in_file->filename : "UNKNOWN");
1574 simple_error_message_box(
1575 "Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.",
1576 in_file ? in_file->packet_num : 0, display_basename,
1577 wtap_file_type_subtype_string(file_type));
1578 g_free(display_basename);
1581 case WTAP_ERR_PACKET_TOO_LARGE:
1583 * This is a problem with the particular frame we're writing and
1584 * the file type and subtype we're writing; note that, and report
1585 * the frame number and file type/subtype.
1587 display_basename = g_filename_display_basename(in_file ? in_file->filename : "UNKNOWN");
1588 simple_error_message_box(
1589 "Frame %u of \"%s\" is too large for a \"%s\" file.",
1590 in_file ? in_file->packet_num : 0, display_basename,
1591 wtap_file_type_subtype_string(file_type));
1592 g_free(display_basename);
1595 case WTAP_ERR_UNWRITABLE_REC_TYPE:
1597 * This is a problem with the particular record we're writing and
1598 * the file type and subtype we're writing; note that, and report
1599 * the record number and file type/subtype.
1601 display_basename = g_filename_display_basename(in_file ? in_file->filename : "UNKNOWN");
1602 simple_error_message_box(
1603 "Record %u of \"%s\" has a record type that can't be saved in a \"%s\" file.",
1604 in_file ? in_file->packet_num : 0, display_basename,
1605 wtap_file_type_subtype_string(file_type));
1606 g_free(display_basename);
1609 case WTAP_ERR_UNWRITABLE_REC_DATA:
1611 * This is a problem with the particular record we're writing and
1612 * the file type and subtype we're writing; note that, and report
1613 * the frame number and file type/subtype.
1615 display_basename = g_filename_display_basename(in_file ? in_file->filename : "UNKNOWN");
1616 simple_error_message_box(
1617 "Record %u of \"%s\" has data that can't be saved in a \"%s\" file.\n(%s)",
1618 in_file ? in_file->packet_num : 0, display_basename,
1619 wtap_file_type_subtype_string(file_type),
1620 write_err_info != NULL ? write_err_info : "no information supplied");
1621 g_free(write_err_info);
1622 g_free(display_basename);
1626 display_basename = g_filename_display_basename(out_filename);
1627 simple_error_message_box(
1628 "An error occurred while writing to the file \"%s\": %s.",
1629 out_filename, wtap_strerror(write_err));
1630 g_free(display_basename);
1635 write_failure_alert_box(out_filename, write_err);
1639 if (got_read_error || got_write_error || stop_flag) {
1640 /* Callers aren't expected to treat an error or an explicit abort
1641 differently - we put up error dialogs ourselves, so they don't
1649 cf_filter_packets(capture_file *cf, gchar *dftext, gboolean force)
1651 const char *filter_new = dftext ? dftext : "";
1652 const char *filter_old = cf->dfilter ? cf->dfilter : "";
1655 GTimeVal start_time;
1657 /* if new filter equals old one, do nothing unless told to do so */
1658 if (!force && strcmp(filter_new, filter_old) == 0) {
1664 if (dftext == NULL) {
1665 /* The new filter is an empty filter (i.e., display all packets).
1666 * so leave dfcode==NULL
1670 * We have a filter; make a copy of it (as we'll be saving it),
1671 * and try to compile it.
1673 dftext = g_strdup(dftext);
1674 if (!dfilter_compile(dftext, &dfcode, &err_msg)) {
1675 /* The attempt failed; report an error. */
1676 simple_message_box(ESD_TYPE_ERROR, NULL,
1677 "See the help for a description of the display filter syntax.",
1678 "\"%s\" isn't a valid display filter: %s",
1686 if (dfcode == NULL) {
1687 /* Yes - free the filter text, and set it to null. */
1693 /* We have a valid filter. Replace the current filter. */
1694 g_free(cf->dfilter);
1695 cf->dfilter = dftext;
1696 g_get_current_time(&start_time);
1699 /* Now rescan the packet list, applying the new filter, but not
1700 throwing away information constructed on a previous pass. */
1701 if (dftext == NULL) {
1702 rescan_packets(cf, "Resetting", "Filter", FALSE);
1704 rescan_packets(cf, "Filtering", dftext, FALSE);
1707 /* Cleanup and release all dfilter resources */
1708 dfilter_free(dfcode);
1714 cf_reftime_packets(capture_file *cf)
1716 ref_time_packets(cf);
1720 cf_redissect_packets(capture_file *cf)
1722 if (cf->state != FILE_CLOSED) {
1723 rescan_packets(cf, "Reprocessing", "all packets", TRUE);
1728 cf_read_record_r(capture_file *cf, const frame_data *fdata,
1729 struct wtap_pkthdr *phdr, Buffer *buf)
1733 gchar *display_basename;
1735 #ifdef WANT_PACKET_EDITOR
1736 /* if fdata->file_off == -1 it means packet was edited, and we must find data inside edited_frames tree */
1737 if (G_UNLIKELY(fdata->file_off == -1)) {
1738 const modified_frame_data *frame = (const modified_frame_data *) g_tree_lookup(cf->edited_frames, GINT_TO_POINTER(fdata->num));
1741 simple_error_message_box("fdata->file_off == -1, but can't find modified frame.");
1745 *phdr = frame->phdr;
1746 ws_buffer_assure_space(buf, frame->phdr.caplen);
1747 memcpy(ws_buffer_start_ptr(buf), frame->pd, frame->phdr.caplen);
1752 if (!wtap_seek_read(cf->wth, fdata->file_off, phdr, buf, &err, &err_info)) {
1753 display_basename = g_filename_display_basename(cf->filename);
1756 case WTAP_ERR_BAD_FILE:
1757 simple_error_message_box("An error occurred while reading from the file \"%s\": %s.\n(%s)",
1758 display_basename, wtap_strerror(err),
1759 err_info != NULL ? err_info : "no information supplied");
1764 simple_error_message_box(
1765 "An error occurred while reading from the file \"%s\": %s.",
1766 display_basename, wtap_strerror(err));
1769 g_free(display_basename);
1776 cf_read_record(capture_file *cf, frame_data *fdata)
1778 return cf_read_record_r(cf, fdata, &cf->phdr, &cf->buf);
1781 /* Rescan the list of packets, reconstructing the CList.
1783 "action" describes why we're doing this; it's used in the progress
1786 "action_item" describes what we're doing; it's used in the progress
1789 "redissect" is TRUE if we need to make the dissectors reconstruct
1790 any state information they have (because a preference that affects
1791 some dissector has changed, meaning some dissector might construct
1792 its state differently from the way it was constructed the last time). */
1794 rescan_packets(capture_file *cf, const char *action, const char *action_item, gboolean redissect)
1796 /* Rescan packets new packet list */
1799 progdlg_t *progbar = NULL;
1801 frame_data *selected_frame, *preceding_frame, *following_frame, *prev_frame;
1802 int selected_frame_num, preceding_frame_num, following_frame_num, prev_frame_num;
1803 gboolean selected_frame_seen;
1805 GTimeVal start_time;
1806 gchar status_str[100];
1807 int progbar_nextstep;
1808 int progbar_quantum;
1812 gboolean create_proto_tree;
1814 gboolean add_to_packet_list = FALSE;
1816 guint32 frames_count;
1818 /* Compile the current display filter.
1819 * We assume this will not fail since cf->dfilter is only set in
1820 * cf_filter IFF the filter was valid.
1822 compiled = dfilter_compile(cf->dfilter, &dfcode, NULL);
1823 g_assert(!cf->dfilter || (compiled && dfcode));
1825 /* Get the union of the flags for all tap listeners. */
1826 tap_flags = union_of_tap_listener_flags();
1827 cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
1829 (dfcode != NULL || have_filtering_tap_listeners() || (tap_flags & TL_REQUIRES_PROTO_TREE));
1831 reset_tap_listeners();
1832 /* Which frame, if any, is the currently selected frame?
1833 XXX - should the selected frame or the focus frame be the "current"
1834 frame, that frame being the one from which "Find Frame" searches
1836 selected_frame = cf->current_frame;
1838 /* Mark frame num as not found */
1839 selected_frame_num = -1;
1841 /* Freeze the packet list while we redo it, so we don't get any
1842 screen updates while it happens. */
1843 packet_list_freeze();
1846 /* We need to re-initialize all the state information that protocols
1847 keep, because some preference that controls a dissector has changed,
1848 which might cause the state information to be constructed differently
1849 by that dissector. */
1851 /* We might receive new packets while redissecting, and we don't
1852 want to dissect those before their time. */
1853 cf->redissecting = TRUE;
1855 /* 'reset' dissection session */
1856 epan_free(cf->epan);
1857 cf->epan = ws_epan_new(cf);
1858 cf->cinfo.epan = cf->epan;
1860 /* We need to redissect the packets so we have to discard our old
1861 * packet list store. */
1862 packet_list_clear();
1863 add_to_packet_list = TRUE;
1866 /* We don't yet know which will be the first and last frames displayed. */
1867 cf->first_displayed = 0;
1868 cf->last_displayed = 0;
1870 /* We currently don't display any packets */
1871 cf->displayed_count = 0;
1873 /* Iterate through the list of frames. Call a routine for each frame
1874 to check whether it should be displayed and, if so, add it to
1875 the display list. */
1877 cf->prev_dis = NULL;
1878 cf->prev_cap = NULL;
1881 /* Update the progress bar when it gets to this value. */
1882 progbar_nextstep = 0;
1883 /* When we reach the value that triggers a progress bar update,
1884 bump that value by this amount. */
1885 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
1886 /* Count of packets at which we've looked. */
1888 /* Progress so far. */
1891 cf->stop_flag = FALSE;
1892 g_get_current_time(&start_time);
1894 /* no previous row yet */
1895 prev_frame_num = -1;
1898 preceding_frame_num = -1;
1899 preceding_frame = NULL;
1900 following_frame_num = -1;
1901 following_frame = NULL;
1903 selected_frame_seen = FALSE;
1905 frames_count = cf->count;
1907 epan_dissect_init(&edt, cf->epan, create_proto_tree, FALSE);
1909 for (framenum = 1; framenum <= frames_count; framenum++) {
1910 fdata = frame_data_sequence_find(cf->frames, framenum);
1912 /* Create the progress bar if necessary.
1913 We check on every iteration of the loop, so that it takes no
1914 longer than the standard time to create it (otherwise, for a
1915 large file, we might take considerably longer than that standard
1916 time in order to get to the next progress bar step). */
1917 if (progbar == NULL)
1918 progbar = delayed_create_progress_dlg(cf->window, action, action_item, TRUE,
1923 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
1924 when we update it, we have to run the GTK+ main loop to get it
1925 to repaint what's pending, and doing so may involve an "ioctl()"
1926 to see if there's any pending input from an X server, and doing
1927 that for every packet can be costly, especially on a big file. */
1928 if (count >= progbar_nextstep) {
1929 /* let's not divide by zero. I should never be started
1930 * with count == 0, so let's assert that
1932 g_assert(cf->count > 0);
1933 progbar_val = (gfloat) count / frames_count;
1935 if (progbar != NULL) {
1936 g_snprintf(status_str, sizeof(status_str),
1937 "%4u of %u frames", count, frames_count);
1938 update_progress_dlg(progbar, progbar_val, status_str);
1941 progbar_nextstep += progbar_quantum;
1944 if (cf->stop_flag) {
1945 /* Well, the user decided to abort the filtering. Just stop.
1947 XXX - go back to the previous filter? Users probably just
1948 want not to wait for a filtering operation to finish;
1949 unless we cancel by having no filter, reverting to the
1950 previous filter will probably be even more expensive than
1951 continuing the filtering, as it involves going back to the
1952 beginning and filtering, and even with no filter we currently
1953 have to re-generate the entire clist, which is also expensive.
1955 I'm not sure what Network Monitor does, but it doesn't appear
1956 to give you an unfiltered display if you cancel. */
1963 /* Since all state for the frame was destroyed, mark the frame
1964 * as not visited, free the GSList referring to the state
1965 * data (the per-frame data itself was freed by
1966 * "init_dissection()"), and null out the GSList pointer. */
1967 frame_data_reset(fdata);
1968 frames_count = cf->count;
1971 /* Frame dependencies from the previous dissection/filtering are no longer valid. */
1972 fdata->flags.dependent_of_displayed = 0;
1974 if (!cf_read_record(cf, fdata))
1975 break; /* error reading the frame */
1977 /* If the previous frame is displayed, and we haven't yet seen the
1978 selected frame, remember that frame - it's the closest one we've
1979 yet seen before the selected frame. */
1980 if (prev_frame_num != -1 && !selected_frame_seen && prev_frame->flags.passed_dfilter) {
1981 preceding_frame_num = prev_frame_num;
1982 preceding_frame = prev_frame;
1985 add_packet_to_packet_list(fdata, cf, &edt, dfcode,
1987 ws_buffer_start_ptr(&cf->buf),
1988 add_to_packet_list);
1990 /* If this frame is displayed, and this is the first frame we've
1991 seen displayed after the selected frame, remember this frame -
1992 it's the closest one we've yet seen at or after the selected
1994 if (fdata->flags.passed_dfilter && selected_frame_seen && following_frame_num == -1) {
1995 following_frame_num = fdata->num;
1996 following_frame = fdata;
1998 if (fdata == selected_frame) {
1999 selected_frame_seen = TRUE;
2000 if (fdata->flags.passed_dfilter)
2001 selected_frame_num = fdata->num;
2004 /* Remember this frame - it'll be the previous frame
2005 on the next pass through the loop. */
2006 prev_frame_num = fdata->num;
2010 epan_dissect_cleanup(&edt);
2012 /* We are done redissecting the packet list. */
2013 cf->redissecting = FALSE;
2016 frames_count = cf->count;
2017 /* Clear out what remains of the visited flags and per-frame data
2020 XXX - that may cause various forms of bogosity when dissecting
2021 these frames, as they won't have been seen by this sequential
2022 pass, but the only alternative I see is to keep scanning them
2023 even though the user requested that the scan stop, and that
2024 would leave the user stuck with an Wireshark grinding on
2025 until it finishes. Should we just stick them with that? */
2026 for (; framenum <= frames_count; framenum++) {
2027 fdata = frame_data_sequence_find(cf->frames, framenum);
2028 frame_data_reset(fdata);
2032 /* We're done filtering the packets; destroy the progress bar if it
2034 if (progbar != NULL)
2035 destroy_progress_dlg(progbar);
2037 /* Unfreeze the packet list. */
2038 if (!add_to_packet_list)
2039 packet_list_recreate_visible_rows();
2041 /* Compute the time it took to filter the file */
2042 compute_elapsed(cf, &start_time);
2046 if (selected_frame_num == -1) {
2047 /* The selected frame didn't pass the filter. */
2048 if (selected_frame == NULL) {
2049 /* That's because there *was* no selected frame. Make the first
2050 displayed frame the current frame. */
2051 selected_frame_num = 0;
2053 /* Find the nearest displayed frame to the selected frame (whether
2054 it's before or after that frame) and make that the current frame.
2055 If the next and previous displayed frames are equidistant from the
2056 selected frame, choose the next one. */
2057 g_assert(following_frame == NULL ||
2058 following_frame->num >= selected_frame->num);
2059 g_assert(preceding_frame == NULL ||
2060 preceding_frame->num <= selected_frame->num);
2061 if (following_frame == NULL) {
2062 /* No frame after the selected frame passed the filter, so we
2063 have to select the last displayed frame before the selected
2065 selected_frame_num = preceding_frame_num;
2066 selected_frame = preceding_frame;
2067 } else if (preceding_frame == NULL) {
2068 /* No frame before the selected frame passed the filter, so we
2069 have to select the first displayed frame after the selected
2071 selected_frame_num = following_frame_num;
2072 selected_frame = following_frame;
2074 /* Frames before and after the selected frame passed the filter, so
2075 we'll select the previous frame */
2076 selected_frame_num = preceding_frame_num;
2077 selected_frame = preceding_frame;
2082 if (selected_frame_num == -1) {
2083 /* There are no frames displayed at all. */
2084 cf_unselect_packet(cf);
2086 /* Either the frame that was selected passed the filter, or we've
2087 found the nearest displayed frame to that frame. Select it, make
2088 it the focus row, and make it visible. */
2089 /* Set to invalid to force update of packet list and packet details */
2090 cf->current_row = -1;
2091 if (selected_frame_num == 0) {
2092 packet_list_select_first_row();
2094 if (!packet_list_select_row_from_data(selected_frame)) {
2095 /* We didn't find a row corresponding to this frame.
2096 This means that the frame isn't being displayed currently,
2097 so we can't select it. */
2098 simple_message_box(ESD_TYPE_INFO, NULL,
2099 "The capture file is probably not fully dissected.",
2100 "End of capture exceeded.");
2105 /* Cleanup and release all dfilter resources */
2106 dfilter_free(dfcode);
2111 * Scan trough all frame data and recalculate the ref time
2112 * without rereading the file.
2113 * XXX - do we need a progres bar or is this fast enough?
2116 ref_time_packets(capture_file *cf)
2123 cf->prev_dis = NULL;
2126 for (framenum = 1; framenum <= cf->count; framenum++) {
2127 fdata = frame_data_sequence_find(cf->frames, framenum);
2129 /* just add some value here until we know if it is being displayed or not */
2130 fdata->cum_bytes = cf->cum_bytes + fdata->pkt_len;
2136 /* If we don't have the time stamp of the first packet in the
2137 capture, it's because this is the first packet. Save the time
2138 stamp of this packet as the time stamp of the first packet. */
2139 if (cf->ref == NULL)
2141 /* if this frames is marked as a reference time frame, reset
2142 firstsec and firstusec to this frame */
2143 if (fdata->flags.ref_time)
2146 /* If we don't have the time stamp of the previous displayed packet,
2147 it's because this is the first displayed packet. Save the time
2148 stamp of this packet as the time stamp of the previous displayed
2150 if (cf->prev_dis == NULL) {
2151 cf->prev_dis = fdata;
2154 /* Get the time elapsed between the first packet and this packet. */
2155 fdata->frame_ref_num = (fdata != cf->ref) ? cf->ref->num : 0;
2156 nstime_delta(&rel_ts, &fdata->abs_ts, &cf->ref->abs_ts);
2158 /* If it's greater than the current elapsed time, set the elapsed time
2159 to it (we check for "greater than" so as not to be confused by
2160 time moving backwards). */
2161 if ((gint32)cf->elapsed_time.secs < rel_ts.secs
2162 || ((gint32)cf->elapsed_time.secs == rel_ts.secs && (gint32)cf->elapsed_time.nsecs < rel_ts.nsecs)) {
2163 cf->elapsed_time = rel_ts;
2166 /* If this frame is displayed, get the time elapsed between the
2167 previous displayed packet and this packet. */
2168 if ( fdata->flags.passed_dfilter ) {
2169 fdata->prev_dis_num = cf->prev_dis->num;
2170 cf->prev_dis = fdata;
2176 if ( (fdata->flags.passed_dfilter) || (fdata->flags.ref_time) ) {
2177 /* This frame either passed the display filter list or is marked as
2178 a time reference frame. All time reference frames are displayed
2179 even if they don't pass the display filter */
2180 if (fdata->flags.ref_time) {
2181 /* if this was a TIME REF frame we should reset the cum_bytes field */
2182 cf->cum_bytes = fdata->pkt_len;
2183 fdata->cum_bytes = cf->cum_bytes;
2185 /* increase cum_bytes with this packets length */
2186 cf->cum_bytes += fdata->pkt_len;
2199 process_specified_records(capture_file *cf, packet_range_t *range,
2200 const char *string1, const char *string2, gboolean terminate_is_stop,
2201 gboolean (*callback)(capture_file *, frame_data *,
2202 struct wtap_pkthdr *, const guint8 *, void *),
2203 void *callback_args)
2208 psp_return_t ret = PSP_FINISHED;
2210 progdlg_t *progbar = NULL;
2213 GTimeVal progbar_start_time;
2214 gchar progbar_status_str[100];
2215 int progbar_nextstep;
2216 int progbar_quantum;
2217 range_process_e process_this;
2218 struct wtap_pkthdr phdr;
2220 wtap_phdr_init(&phdr);
2221 ws_buffer_init(&buf, 1500);
2223 /* Update the progress bar when it gets to this value. */
2224 progbar_nextstep = 0;
2225 /* When we reach the value that triggers a progress bar update,
2226 bump that value by this amount. */
2227 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
2228 /* Count of packets at which we've looked. */
2230 /* Progress so far. */
2233 cf->stop_flag = FALSE;
2234 g_get_current_time(&progbar_start_time);
2237 packet_range_process_init(range);
2239 /* Iterate through all the packets, printing the packets that
2240 were selected by the current display filter. */
2241 for (framenum = 1; framenum <= cf->count; framenum++) {
2242 fdata = frame_data_sequence_find(cf->frames, framenum);
2244 /* Create the progress bar if necessary.
2245 We check on every iteration of the loop, so that it takes no
2246 longer than the standard time to create it (otherwise, for a
2247 large file, we might take considerably longer than that standard
2248 time in order to get to the next progress bar step). */
2249 if (progbar == NULL)
2250 progbar = delayed_create_progress_dlg(cf->window, string1, string2,
2253 &progbar_start_time,
2256 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
2257 when we update it, we have to run the GTK+ main loop to get it
2258 to repaint what's pending, and doing so may involve an "ioctl()"
2259 to see if there's any pending input from an X server, and doing
2260 that for every packet can be costly, especially on a big file. */
2261 if (progbar_count >= progbar_nextstep) {
2262 /* let's not divide by zero. I should never be started
2263 * with count == 0, so let's assert that
2265 g_assert(cf->count > 0);
2266 progbar_val = (gfloat) progbar_count / cf->count;
2268 if (progbar != NULL) {
2269 g_snprintf(progbar_status_str, sizeof(progbar_status_str),
2270 "%4u of %u packets", progbar_count, cf->count);
2271 update_progress_dlg(progbar, progbar_val, progbar_status_str);
2274 progbar_nextstep += progbar_quantum;
2277 if (cf->stop_flag) {
2278 /* Well, the user decided to abort the operation. Just stop,
2279 and arrange to return PSP_STOPPED to our caller, so they know
2280 it was stopped explicitly. */
2287 if (range != NULL) {
2288 /* do we have to process this packet? */
2289 process_this = packet_range_process_packet(range, fdata);
2290 if (process_this == range_process_next) {
2291 /* this packet uninteresting, continue with next one */
2293 } else if (process_this == range_processing_finished) {
2294 /* all interesting packets processed, stop the loop */
2299 /* Get the packet */
2300 if (!cf_read_record_r(cf, fdata, &phdr, &buf)) {
2301 /* Attempt to get the packet failed. */
2305 /* Process the packet */
2306 if (!callback(cf, fdata, &phdr, ws_buffer_start_ptr(&buf), callback_args)) {
2307 /* Callback failed. We assume it reported the error appropriately. */
2313 /* We're done printing the packets; destroy the progress bar if
2315 if (progbar != NULL)
2316 destroy_progress_dlg(progbar);
2318 wtap_phdr_cleanup(&phdr);
2319 ws_buffer_free(&buf);
2327 } retap_callback_args_t;
2330 retap_packet(capture_file *cf, frame_data *fdata,
2331 struct wtap_pkthdr *phdr, const guint8 *pd,
2334 retap_callback_args_t *args = (retap_callback_args_t *)argsp;
2336 epan_dissect_run_with_taps(&args->edt, cf->cd_t, phdr, frame_tvbuff_new(fdata, pd), fdata, args->cinfo);
2337 epan_dissect_reset(&args->edt);
2343 cf_retap_packets(capture_file *cf)
2345 packet_range_t range;
2346 retap_callback_args_t callback_args;
2347 gboolean construct_protocol_tree;
2348 gboolean filtering_tap_listeners;
2352 /* Presumably the user closed the capture file. */
2354 return CF_READ_ABORTED;
2357 /* Do we have any tap listeners with filters? */
2358 filtering_tap_listeners = have_filtering_tap_listeners();
2360 tap_flags = union_of_tap_listener_flags();
2362 /* If any tap listeners have filters, or require the protocol tree,
2363 construct the protocol tree. */
2364 construct_protocol_tree = filtering_tap_listeners ||
2365 (tap_flags & TL_REQUIRES_PROTO_TREE);
2367 /* If any tap listeners require the columns, construct them. */
2368 callback_args.cinfo = (tap_flags & TL_REQUIRES_COLUMNS) ? &cf->cinfo : NULL;
2370 /* Reset the tap listeners. */
2371 reset_tap_listeners();
2373 epan_dissect_init(&callback_args.edt, cf->epan, construct_protocol_tree, FALSE);
2375 /* Iterate through the list of packets, dissecting all packets and
2376 re-running the taps. */
2377 packet_range_init(&range, cf);
2378 packet_range_process_init(&range);
2380 ret = process_specified_records(cf, &range, "Recalculating statistics on",
2381 "all packets", TRUE, retap_packet,
2384 epan_dissect_cleanup(&callback_args.edt);
2388 /* Completed successfully. */
2392 /* Well, the user decided to abort the refiltering.
2393 Return CF_READ_ABORTED so our caller knows they did that. */
2394 return CF_READ_ABORTED;
2397 /* Error while retapping. */
2398 return CF_READ_ERROR;
2401 g_assert_not_reached();
2406 print_args_t *print_args;
2407 gboolean print_header_line;
2408 char *header_line_buf;
2409 int header_line_buf_len;
2410 gboolean print_formfeed;
2411 gboolean print_separator;
2415 int num_visible_cols;
2418 } print_callback_args_t;
2421 print_packet(capture_file *cf, frame_data *fdata,
2422 struct wtap_pkthdr *phdr, const guint8 *pd,
2425 print_callback_args_t *args = (print_callback_args_t *)argsp;
2431 char bookmark_name[9+10+1]; /* "__frameNNNNNNNNNN__\0" */
2432 char bookmark_title[6+10+1]; /* "Frame NNNNNNNNNN__\0" */
2434 /* Fill in the column information if we're printing the summary
2436 if (args->print_args->print_summary) {
2437 col_custom_prime_edt(&args->edt, &cf->cinfo);
2438 epan_dissect_run(&args->edt, cf->cd_t, phdr, frame_tvbuff_new(fdata, pd), fdata, &cf->cinfo);
2439 epan_dissect_fill_in_columns(&args->edt, FALSE, TRUE);
2441 epan_dissect_run(&args->edt, cf->cd_t, phdr, frame_tvbuff_new(fdata, pd), fdata, NULL);
2443 if (args->print_formfeed) {
2444 if (!new_page(args->print_args->stream))
2447 if (args->print_separator) {
2448 if (!print_line(args->print_args->stream, 0, ""))
2454 * We generate bookmarks, if the output format supports them.
2455 * The name is "__frameN__".
2457 g_snprintf(bookmark_name, sizeof bookmark_name, "__frame%u__", fdata->num);
2459 if (args->print_args->print_summary) {
2460 if (!args->print_args->print_col_headings)
2461 args->print_header_line = FALSE;
2462 if (args->print_header_line) {
2463 if (!print_line(args->print_args->stream, 0, args->header_line_buf))
2465 args->print_header_line = FALSE; /* we might not need to print any more */
2467 cp = &args->line_buf[0];
2469 for (i = 0; i < args->num_visible_cols; i++) {
2470 /* Find the length of the string for this column. */
2471 column_len = (int) strlen(cf->cinfo.col_data[args->visible_cols[i]]);
2472 if (args->col_widths[i] > column_len)
2473 column_len = args->col_widths[i];
2475 /* Make sure there's room in the line buffer for the column; if not,
2476 double its length. */
2477 line_len += column_len + 1; /* "+1" for space */
2478 if (line_len > args->line_buf_len) {
2479 cp_off = (int) (cp - args->line_buf);
2480 args->line_buf_len = 2 * line_len;
2481 args->line_buf = (char *)g_realloc(args->line_buf, args->line_buf_len + 1);
2482 cp = args->line_buf + cp_off;
2485 /* Right-justify the packet number column. */
2486 if (cf->cinfo.col_fmt[args->visible_cols[i]] == COL_NUMBER)
2487 g_snprintf(cp, column_len+1, "%*s", args->col_widths[i], cf->cinfo.col_data[args->visible_cols[i]]);
2489 g_snprintf(cp, column_len+1, "%-*s", args->col_widths[i], cf->cinfo.col_data[args->visible_cols[i]]);
2491 if (i != args->num_visible_cols - 1)
2497 * Generate a bookmark, using the summary line as the title.
2499 if (!print_bookmark(args->print_args->stream, bookmark_name,
2503 if (!print_line(args->print_args->stream, 0, args->line_buf))
2507 * Generate a bookmark, using "Frame N" as the title, as we're not
2508 * printing the summary line.
2510 g_snprintf(bookmark_title, sizeof bookmark_title, "Frame %u", fdata->num);
2511 if (!print_bookmark(args->print_args->stream, bookmark_name,
2514 } /* if (print_summary) */
2516 if (args->print_args->print_dissections != print_dissections_none) {
2517 if (args->print_args->print_summary) {
2518 /* Separate the summary line from the tree with a blank line. */
2519 if (!print_line(args->print_args->stream, 0, ""))
2523 /* Print the information in that tree. */
2524 if (!proto_tree_print(args->print_args, &args->edt, NULL, args->print_args->stream))
2527 /* Print a blank line if we print anything after this (aka more than one packet). */
2528 args->print_separator = TRUE;
2530 /* Print a header line if we print any more packet summaries */
2531 if (args->print_args->print_col_headings)
2532 args->print_header_line = TRUE;
2535 if (args->print_args->print_hex) {
2536 if (args->print_args->print_summary || (args->print_args->print_dissections != print_dissections_none)) {
2537 if (!print_line(args->print_args->stream, 0, ""))
2540 /* Print the full packet data as hex. */
2541 if (!print_hex_data(args->print_args->stream, &args->edt))
2544 /* Print a blank line if we print anything after this (aka more than one packet). */
2545 args->print_separator = TRUE;
2547 /* Print a header line if we print any more packet summaries */
2548 if (args->print_args->print_col_headings)
2549 args->print_header_line = TRUE;
2550 } /* if (args->print_args->print_dissections != print_dissections_none) */
2552 epan_dissect_reset(&args->edt);
2554 /* do we want to have a formfeed between each packet from now on? */
2555 if (args->print_args->print_formfeed) {
2556 args->print_formfeed = TRUE;
2562 epan_dissect_reset(&args->edt);
2567 cf_print_packets(capture_file *cf, print_args_t *print_args)
2569 print_callback_args_t callback_args;
2572 int i, cp_off, column_len, line_len;
2573 int num_visible_col = 0, last_visible_col = 0, visible_col_count;
2577 gboolean proto_tree_needed;
2579 callback_args.print_args = print_args;
2580 callback_args.print_header_line = print_args->print_col_headings;
2581 callback_args.header_line_buf = NULL;
2582 callback_args.header_line_buf_len = 256;
2583 callback_args.print_formfeed = FALSE;
2584 callback_args.print_separator = FALSE;
2585 callback_args.line_buf = NULL;
2586 callback_args.line_buf_len = 256;
2587 callback_args.col_widths = NULL;
2588 callback_args.num_visible_cols = 0;
2589 callback_args.visible_cols = NULL;
2591 if (!print_preamble(print_args->stream, cf->filename, get_ws_vcs_version_info())) {
2592 destroy_print_stream(print_args->stream);
2593 return CF_PRINT_WRITE_ERROR;
2596 if (print_args->print_summary) {
2597 /* We're printing packet summaries. Allocate the header line buffer
2598 and get the column widths. */
2599 callback_args.header_line_buf = (char *)g_malloc(callback_args.header_line_buf_len + 1);
2601 /* Find the number of visible columns and the last visible column */
2602 for (i = 0; i < prefs.num_cols; i++) {
2604 clp = g_list_nth(prefs.col_list, i);
2605 if (clp == NULL) /* Sanity check, Invalid column requested */
2608 cfmt = (fmt_data *) clp->data;
2609 if (cfmt->visible) {
2611 last_visible_col = i;
2615 /* Find the widths for each of the columns - maximum of the
2616 width of the title and the width of the data - and construct
2617 a buffer with a line containing the column titles. */
2618 callback_args.num_visible_cols = num_visible_col;
2619 callback_args.col_widths = (gint *) g_malloc(sizeof(gint) * num_visible_col);
2620 callback_args.visible_cols = (gint *) g_malloc(sizeof(gint) * num_visible_col);
2621 cp = &callback_args.header_line_buf[0];
2623 visible_col_count = 0;
2624 for (i = 0; i < cf->cinfo.num_cols; i++) {
2626 clp = g_list_nth(prefs.col_list, i);
2627 if (clp == NULL) /* Sanity check, Invalid column requested */
2630 cfmt = (fmt_data *) clp->data;
2631 if (cfmt->visible == FALSE)
2634 /* Save the order of visible columns */
2635 callback_args.visible_cols[visible_col_count] = i;
2637 /* Don't pad the last column. */
2638 if (i == last_visible_col)
2639 callback_args.col_widths[visible_col_count] = 0;
2641 callback_args.col_widths[visible_col_count] = (gint) strlen(cf->cinfo.col_title[i]);
2642 data_width = get_column_char_width(get_column_format(i));
2643 if (data_width > callback_args.col_widths[visible_col_count])
2644 callback_args.col_widths[visible_col_count] = data_width;
2647 /* Find the length of the string for this column. */
2648 column_len = (int) strlen(cf->cinfo.col_title[i]);
2649 if (callback_args.col_widths[i] > column_len)
2650 column_len = callback_args.col_widths[visible_col_count];
2652 /* Make sure there's room in the line buffer for the column; if not,
2653 double its length. */
2654 line_len += column_len + 1; /* "+1" for space */
2655 if (line_len > callback_args.header_line_buf_len) {
2656 cp_off = (int) (cp - callback_args.header_line_buf);
2657 callback_args.header_line_buf_len = 2 * line_len;
2658 callback_args.header_line_buf = (char *)g_realloc(callback_args.header_line_buf,
2659 callback_args.header_line_buf_len + 1);
2660 cp = callback_args.header_line_buf + cp_off;
2663 /* Right-justify the packet number column. */
2664 /* if (cf->cinfo.col_fmt[i] == COL_NUMBER)
2665 g_snprintf(cp, column_len+1, "%*s", callback_args.col_widths[visible_col_count], cf->cinfo.col_title[i]);
2667 g_snprintf(cp, column_len+1, "%-*s", callback_args.col_widths[visible_col_count], cf->cinfo.col_title[i]);
2669 if (i != cf->cinfo.num_cols - 1)
2672 visible_col_count++;
2676 /* Now start out the main line buffer with the same length as the
2677 header line buffer. */
2678 callback_args.line_buf_len = callback_args.header_line_buf_len;
2679 callback_args.line_buf = (char *)g_malloc(callback_args.line_buf_len + 1);
2680 } /* if (print_summary) */
2682 /* Create the protocol tree, and make it visible, if we're printing
2683 the dissection or the hex data.
2684 XXX - do we need it if we're just printing the hex data? */
2686 callback_args.print_args->print_dissections != print_dissections_none ||
2687 callback_args.print_args->print_hex ||
2688 have_custom_cols(&cf->cinfo);
2689 epan_dissect_init(&callback_args.edt, cf->epan, proto_tree_needed, proto_tree_needed);
2691 /* Iterate through the list of packets, printing the packets we were
2693 ret = process_specified_records(cf, &print_args->range, "Printing",
2694 "selected packets", TRUE, print_packet,
2696 epan_dissect_cleanup(&callback_args.edt);
2697 g_free(callback_args.header_line_buf);
2698 g_free(callback_args.line_buf);
2699 g_free(callback_args.col_widths);
2700 g_free(callback_args.visible_cols);
2705 /* Completed successfully. */
2709 /* Well, the user decided to abort the printing.
2711 XXX - note that what got generated before they did that
2712 will get printed if we're piping to a print program; we'd
2713 have to write to a file and then hand that to the print
2714 program to make it actually not print anything. */
2718 /* Error while printing.
2720 XXX - note that what got generated before they did that
2721 will get printed if we're piping to a print program; we'd
2722 have to write to a file and then hand that to the print
2723 program to make it actually not print anything. */
2724 destroy_print_stream(print_args->stream);
2725 return CF_PRINT_WRITE_ERROR;
2728 if (!print_finale(print_args->stream)) {
2729 destroy_print_stream(print_args->stream);
2730 return CF_PRINT_WRITE_ERROR;
2733 if (!destroy_print_stream(print_args->stream))
2734 return CF_PRINT_WRITE_ERROR;
2742 } write_packet_callback_args_t;
2745 write_pdml_packet(capture_file *cf, frame_data *fdata,
2746 struct wtap_pkthdr *phdr, const guint8 *pd,
2749 write_packet_callback_args_t *args = (write_packet_callback_args_t *)argsp;
2751 /* Create the protocol tree, but don't fill in the column information. */
2752 epan_dissect_run(&args->edt, cf->cd_t, phdr, frame_tvbuff_new(fdata, pd), fdata, NULL);
2754 /* Write out the information in that tree. */
2755 write_pdml_proto_tree(&args->edt, args->fh);
2757 epan_dissect_reset(&args->edt);
2759 return !ferror(args->fh);
2763 cf_write_pdml_packets(capture_file *cf, print_args_t *print_args)
2765 write_packet_callback_args_t callback_args;
2769 fh = ws_fopen(print_args->file, "w");
2771 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2773 write_pdml_preamble(fh, cf->filename);
2776 return CF_PRINT_WRITE_ERROR;
2779 callback_args.fh = fh;
2780 epan_dissect_init(&callback_args.edt, cf->epan, TRUE, TRUE);
2782 /* Iterate through the list of packets, printing the packets we were
2784 ret = process_specified_records(cf, &print_args->range, "Writing PDML",
2785 "selected packets", TRUE,
2786 write_pdml_packet, &callback_args);
2788 epan_dissect_cleanup(&callback_args.edt);
2793 /* Completed successfully. */
2797 /* Well, the user decided to abort the printing. */
2801 /* Error while printing. */
2803 return CF_PRINT_WRITE_ERROR;
2806 write_pdml_finale(fh);
2809 return CF_PRINT_WRITE_ERROR;
2812 /* XXX - check for an error */
2819 write_psml_packet(capture_file *cf, frame_data *fdata,
2820 struct wtap_pkthdr *phdr, const guint8 *pd,
2823 write_packet_callback_args_t *args = (write_packet_callback_args_t *)argsp;
2825 /* Fill in the column information */
2826 col_custom_prime_edt(&args->edt, &cf->cinfo);
2827 epan_dissect_run(&args->edt, cf->cd_t, phdr, frame_tvbuff_new(fdata, pd), fdata, &cf->cinfo);
2828 epan_dissect_fill_in_columns(&args->edt, FALSE, TRUE);
2830 /* Write out the column information. */
2831 write_psml_columns(&args->edt, args->fh);
2833 epan_dissect_reset(&args->edt);
2835 return !ferror(args->fh);
2839 cf_write_psml_packets(capture_file *cf, print_args_t *print_args)
2841 write_packet_callback_args_t callback_args;
2845 gboolean proto_tree_needed;
2847 fh = ws_fopen(print_args->file, "w");
2849 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2851 write_psml_preamble(&cf->cinfo, fh);
2854 return CF_PRINT_WRITE_ERROR;
2857 callback_args.fh = fh;
2859 /* Fill in the column information, only create the protocol tree
2860 if having custom columns. */
2861 proto_tree_needed = have_custom_cols(&cf->cinfo);
2862 epan_dissect_init(&callback_args.edt, cf->epan, proto_tree_needed, proto_tree_needed);
2864 /* Iterate through the list of packets, printing the packets we were
2866 ret = process_specified_records(cf, &print_args->range, "Writing PSML",
2867 "selected packets", TRUE,
2868 write_psml_packet, &callback_args);
2870 epan_dissect_cleanup(&callback_args.edt);
2875 /* Completed successfully. */
2879 /* Well, the user decided to abort the printing. */
2883 /* Error while printing. */
2885 return CF_PRINT_WRITE_ERROR;
2888 write_psml_finale(fh);
2891 return CF_PRINT_WRITE_ERROR;
2894 /* XXX - check for an error */
2901 write_csv_packet(capture_file *cf, frame_data *fdata,
2902 struct wtap_pkthdr *phdr, const guint8 *pd,
2905 write_packet_callback_args_t *args = (write_packet_callback_args_t *)argsp;
2907 /* Fill in the column information */
2908 col_custom_prime_edt(&args->edt, &cf->cinfo);
2909 epan_dissect_run(&args->edt, cf->cd_t, phdr, frame_tvbuff_new(fdata, pd), fdata, &cf->cinfo);
2910 epan_dissect_fill_in_columns(&args->edt, FALSE, TRUE);
2912 /* Write out the column information. */
2913 write_csv_columns(&args->edt, args->fh);
2915 epan_dissect_reset(&args->edt);
2917 return !ferror(args->fh);
2921 cf_write_csv_packets(capture_file *cf, print_args_t *print_args)
2923 write_packet_callback_args_t callback_args;
2924 gboolean proto_tree_needed;
2928 fh = ws_fopen(print_args->file, "w");
2930 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
2932 write_csv_column_titles(&cf->cinfo, fh);
2935 return CF_PRINT_WRITE_ERROR;
2938 callback_args.fh = fh;
2940 /* only create the protocol tree if having custom columns. */
2941 proto_tree_needed = have_custom_cols(&cf->cinfo);
2942 epan_dissect_init(&callback_args.edt, cf->epan, proto_tree_needed, proto_tree_needed);
2944 /* Iterate through the list of packets, printing the packets we were
2946 ret = process_specified_records(cf, &print_args->range, "Writing CSV",
2947 "selected packets", TRUE,
2948 write_csv_packet, &callback_args);
2950 epan_dissect_cleanup(&callback_args.edt);
2955 /* Completed successfully. */
2959 /* Well, the user decided to abort the printing. */
2963 /* Error while printing. */
2965 return CF_PRINT_WRITE_ERROR;
2968 /* XXX - check for an error */
2975 carrays_write_packet(capture_file *cf, frame_data *fdata,
2976 struct wtap_pkthdr *phdr,
2977 const guint8 *pd, void *argsp)
2979 write_packet_callback_args_t *args = (write_packet_callback_args_t *)argsp;
2981 epan_dissect_run(&args->edt, cf->cd_t, phdr, frame_tvbuff_new(fdata, pd), fdata, NULL);
2982 write_carrays_hex_data(fdata->num, args->fh, &args->edt);
2983 epan_dissect_reset(&args->edt);
2985 return !ferror(args->fh);
2989 cf_write_carrays_packets(capture_file *cf, print_args_t *print_args)
2991 write_packet_callback_args_t callback_args;
2995 fh = ws_fopen(print_args->file, "w");
2998 return CF_PRINT_OPEN_ERROR; /* attempt to open destination failed */
3002 return CF_PRINT_WRITE_ERROR;
3005 callback_args.fh = fh;
3006 epan_dissect_init(&callback_args.edt, cf->epan, TRUE, TRUE);
3008 /* Iterate through the list of packets, printing the packets we were
3010 ret = process_specified_records(cf, &print_args->range,
3012 "selected packets", TRUE,
3013 carrays_write_packet, &callback_args);
3015 epan_dissect_cleanup(&callback_args.edt);
3019 /* Completed successfully. */
3022 /* Well, the user decided to abort the printing. */
3025 /* Error while printing. */
3027 return CF_PRINT_WRITE_ERROR;
3035 cf_find_packet_protocol_tree(capture_file *cf, const char *string,
3036 search_direction dir)
3040 mdata.string = string;
3041 mdata.string_len = strlen(string);
3042 return find_packet(cf, match_protocol_tree, &mdata, dir);
3046 cf_find_string_protocol_tree(capture_file *cf, proto_tree *tree, match_data *mdata)
3048 mdata->frame_matched = FALSE;
3049 mdata->string = convert_string_case(cf->sfilter, cf->case_type);
3050 mdata->string_len = strlen(mdata->string);
3052 /* Iterate through all the nodes looking for matching text */
3053 proto_tree_children_foreach(tree, match_subtree_text, mdata);
3054 return mdata->frame_matched ? MR_MATCHED : MR_NOTMATCHED;
3058 match_protocol_tree(capture_file *cf, frame_data *fdata, void *criterion)
3060 match_data *mdata = (match_data *)criterion;
3063 /* Load the frame's data. */
3064 if (!cf_read_record(cf, fdata)) {
3065 /* Attempt to get the packet failed. */
3069 /* Construct the protocol tree, including the displayed text */
3070 epan_dissect_init(&edt, cf->epan, TRUE, TRUE);
3071 /* We don't need the column information */
3072 epan_dissect_run(&edt, cf->cd_t, &cf->phdr, frame_tvbuff_new_buffer(fdata, &cf->buf), fdata, NULL);
3074 /* Iterate through all the nodes, seeing if they have text that matches. */
3076 mdata->frame_matched = FALSE;
3077 proto_tree_children_foreach(edt.tree, match_subtree_text, mdata);
3078 epan_dissect_cleanup(&edt);
3079 return mdata->frame_matched ? MR_MATCHED : MR_NOTMATCHED;
3083 match_subtree_text(proto_node *node, gpointer data)
3085 match_data *mdata = (match_data *) data;
3086 const gchar *string = mdata->string;
3087 size_t string_len = mdata->string_len;
3088 capture_file *cf = mdata->cf;
3089 field_info *fi = PNODE_FINFO(node);
3090 gchar label_str[ITEM_LABEL_LENGTH];
3097 /* dissection with an invisible proto tree? */
3100 if (mdata->frame_matched) {
3101 /* We already had a match; don't bother doing any more work. */
3105 /* Don't match invisible entries. */
3106 if (PROTO_ITEM_IS_HIDDEN(node))
3109 /* was a free format label produced? */
3111 label_ptr = fi->rep->representation;
3113 /* no, make a generic label */
3114 label_ptr = label_str;
3115 proto_item_fill_label(fi, label_str);
3118 /* Does that label match? */
3119 label_len = strlen(label_ptr);
3120 for (i = 0; i < label_len; i++) {
3121 c_char = label_ptr[i];
3123 c_char = g_ascii_toupper(c_char);
3124 if (c_char == string[c_match]) {
3126 if (c_match == string_len) {
3127 /* No need to look further; we have a match */
3128 mdata->frame_matched = TRUE;
3136 /* Recurse into the subtree, if it exists */
3137 if (node->first_child != NULL)
3138 proto_tree_children_foreach(node, match_subtree_text, mdata);
3142 cf_find_packet_summary_line(capture_file *cf, const char *string,
3143 search_direction dir)
3147 mdata.string = string;
3148 mdata.string_len = strlen(string);
3149 return find_packet(cf, match_summary_line, &mdata, dir);
3153 match_summary_line(capture_file *cf, frame_data *fdata, void *criterion)
3155 match_data *mdata = (match_data *)criterion;
3156 const gchar *string = mdata->string;
3157 size_t string_len = mdata->string_len;
3159 const char *info_column;
3160 size_t info_column_len;
3161 match_result result = MR_NOTMATCHED;
3167 /* Load the frame's data. */
3168 if (!cf_read_record(cf, fdata)) {
3169 /* Attempt to get the packet failed. */
3173 /* Don't bother constructing the protocol tree */
3174 epan_dissect_init(&edt, cf->epan, FALSE, FALSE);
3175 /* Get the column information */
3176 epan_dissect_run(&edt, cf->cd_t, &cf->phdr, frame_tvbuff_new_buffer(fdata, &cf->buf), fdata,
3179 /* Find the Info column */
3180 for (colx = 0; colx < cf->cinfo.num_cols; colx++) {
3181 if (cf->cinfo.fmt_matx[colx][COL_INFO]) {
3182 /* Found it. See if we match. */
3183 info_column = edt.pi.cinfo->col_data[colx];
3184 info_column_len = strlen(info_column);
3185 for (i = 0; i < info_column_len; i++) {
3186 c_char = info_column[i];
3188 c_char = g_ascii_toupper(c_char);
3189 if (c_char == string[c_match]) {
3191 if (c_match == string_len) {
3192 result = MR_MATCHED;
3201 epan_dissect_cleanup(&edt);
3208 } cbs_t; /* "Counted byte string" */
3212 * The current match_* routines only support ASCII case insensitivity and don't
3213 * convert UTF-8 inputs to UTF-16 for matching.
3215 * We could modify them to use the GLib Unicode routines or the International
3216 * Components for Unicode library but it's not apparent that we could do so
3217 * without consuming a lot more CPU and memory or that searching would be
3218 * significantly better.
3222 cf_find_packet_data(capture_file *cf, const guint8 *string, size_t string_size,
3223 search_direction dir)
3228 info.data_len = string_size;
3230 /* String or hex search? */
3232 /* String search - what type of string? */
3233 switch (cf->scs_type) {
3235 case SCS_NARROW_AND_WIDE:
3236 return find_packet(cf, match_narrow_and_wide, &info, dir);
3239 return find_packet(cf, match_narrow, &info, dir);
3242 return find_packet(cf, match_wide, &info, dir);
3245 g_assert_not_reached();
3249 return find_packet(cf, match_binary, &info, dir);
3253 match_narrow_and_wide(capture_file *cf, frame_data *fdata, void *criterion)
3255 cbs_t *info = (cbs_t *)criterion;
3256 const guint8 *ascii_text = info->data;
3257 size_t textlen = info->data_len;
3258 match_result result;
3265 /* Load the frame's data. */
3266 if (!cf_read_record(cf, fdata)) {
3267 /* Attempt to get the packet failed. */
3271 result = MR_NOTMATCHED;
3272 buf_len = fdata->cap_len;
3273 pd = ws_buffer_start_ptr(&cf->buf);
3275 while (i < buf_len) {
3278 c_char = g_ascii_toupper(c_char);
3279 if (c_char != '\0') {
3280 if (c_char == ascii_text[c_match]) {
3282 if (c_match == textlen) {
3283 result = MR_MATCHED;
3284 cf->search_pos = i; /* Save the position of the last character
3285 for highlighting the field. */
3290 g_assert(i>=c_match);
3291 i -= (guint32)c_match;
3301 match_narrow(capture_file *cf, frame_data *fdata, void *criterion)
3304 cbs_t *info = (cbs_t *)criterion;
3305 const guint8 *ascii_text = info->data;
3306 size_t textlen = info->data_len;
3307 match_result result;
3313 /* Load the frame's data. */
3314 if (!cf_read_record(cf, fdata)) {
3315 /* Attempt to get the packet failed. */
3319 result = MR_NOTMATCHED;
3320 buf_len = fdata->cap_len;
3321 pd = ws_buffer_start_ptr(&cf->buf);
3323 while (i < buf_len) {
3326 c_char = g_ascii_toupper(c_char);
3327 if (c_char == ascii_text[c_match]) {
3329 if (c_match == textlen) {
3330 result = MR_MATCHED;
3331 cf->search_pos = i; /* Save the position of the last character
3332 for highlighting the field. */
3337 g_assert(i>=c_match);
3338 i -= (guint32)c_match;
3348 match_wide(capture_file *cf, frame_data *fdata, void *criterion)
3350 cbs_t *info = (cbs_t *)criterion;
3351 const guint8 *ascii_text = info->data;
3352 size_t textlen = info->data_len;
3353 match_result result;
3360 /* Load the frame's data. */
3361 if (!cf_read_record(cf, fdata)) {
3362 /* Attempt to get the packet failed. */
3366 result = MR_NOTMATCHED;
3367 buf_len = fdata->cap_len;
3368 pd = ws_buffer_start_ptr(&cf->buf);
3370 while (i < buf_len) {
3373 c_char = g_ascii_toupper(c_char);
3374 if (c_char == ascii_text[c_match]) {
3376 if (c_match == textlen) {
3377 result = MR_MATCHED;
3378 cf->search_pos = i; /* Save the position of the last character
3379 for highlighting the field. */
3385 g_assert(i>=(c_match*2));
3386 i -= (guint32)c_match*2;
3395 match_binary(capture_file *cf, frame_data *fdata, void *criterion)
3397 cbs_t *info = (cbs_t *)criterion;
3398 const guint8 *binary_data = info->data;
3399 size_t datalen = info->data_len;
3400 match_result result;
3406 /* Load the frame's data. */
3407 if (!cf_read_record(cf, fdata)) {
3408 /* Attempt to get the packet failed. */
3412 result = MR_NOTMATCHED;
3413 buf_len = fdata->cap_len;
3414 pd = ws_buffer_start_ptr(&cf->buf);
3416 while (i < buf_len) {
3417 if (pd[i] == binary_data[c_match]) {
3419 if (c_match == datalen) {
3420 result = MR_MATCHED;
3421 cf->search_pos = i; /* Save the position of the last character
3422 for highlighting the field. */
3427 g_assert(i>=c_match);
3428 i -= (guint32)c_match;
3437 cf_find_packet_dfilter(capture_file *cf, dfilter_t *sfcode,
3438 search_direction dir)
3440 return find_packet(cf, match_dfilter, sfcode, dir);
3444 cf_find_packet_dfilter_string(capture_file *cf, const char *filter,
3445 search_direction dir)
3450 if (!dfilter_compile(filter, &sfcode, NULL)) {
3452 * XXX - this shouldn't happen, as the filter string is machine
3457 if (sfcode == NULL) {
3459 * XXX - this shouldn't happen, as the filter string is machine
3464 result = find_packet(cf, match_dfilter, sfcode, dir);
3465 dfilter_free(sfcode);
3470 match_dfilter(capture_file *cf, frame_data *fdata, void *criterion)
3472 dfilter_t *sfcode = (dfilter_t *)criterion;
3474 match_result result;
3476 /* Load the frame's data. */
3477 if (!cf_read_record(cf, fdata)) {
3478 /* Attempt to get the packet failed. */
3482 epan_dissect_init(&edt, cf->epan, TRUE, FALSE);
3483 epan_dissect_prime_dfilter(&edt, sfcode);
3484 epan_dissect_run(&edt, cf->cd_t, &cf->phdr, frame_tvbuff_new_buffer(fdata, &cf->buf), fdata, NULL);
3485 result = dfilter_apply_edt(sfcode, &edt) ? MR_MATCHED : MR_NOTMATCHED;
3486 epan_dissect_cleanup(&edt);
3491 cf_find_packet_marked(capture_file *cf, search_direction dir)
3493 return find_packet(cf, match_marked, NULL, dir);
3497 match_marked(capture_file *cf _U_, frame_data *fdata, void *criterion _U_)
3499 return fdata->flags.marked ? MR_MATCHED : MR_NOTMATCHED;
3503 cf_find_packet_time_reference(capture_file *cf, search_direction dir)
3505 return find_packet(cf, match_time_reference, NULL, dir);
3509 match_time_reference(capture_file *cf _U_, frame_data *fdata, void *criterion _U_)
3511 return fdata->flags.ref_time ? MR_MATCHED : MR_NOTMATCHED;
3515 find_packet(capture_file *cf,
3516 match_result (*match_function)(capture_file *, frame_data *, void *),
3517 void *criterion, search_direction dir)
3519 frame_data *start_fd;
3522 frame_data *new_fd = NULL;
3523 progdlg_t *progbar = NULL;
3527 GTimeVal start_time;
3528 gchar status_str[100];
3529 int progbar_nextstep;
3530 int progbar_quantum;
3532 match_result result;
3534 start_fd = cf->current_frame;
3535 if (start_fd != NULL) {
3536 /* Iterate through the list of packets, starting at the packet we've
3537 picked, calling a routine to run the filter on the packet, see if
3538 it matches, and stop if so. */
3540 framenum = start_fd->num;
3542 /* Update the progress bar when it gets to this value. */
3543 progbar_nextstep = 0;
3544 /* When we reach the value that triggers a progress bar update,
3545 bump that value by this amount. */
3546 progbar_quantum = cf->count/N_PROGBAR_UPDATES;
3547 /* Progress so far. */
3550 cf->stop_flag = FALSE;
3551 g_get_current_time(&start_time);
3553 title = cf->sfilter?cf->sfilter:"";
3555 /* Create the progress bar if necessary.
3556 We check on every iteration of the loop, so that it takes no
3557 longer than the standard time to create it (otherwise, for a
3558 large file, we might take considerably longer than that standard
3559 time in order to get to the next progress bar step). */
3560 if (progbar == NULL)
3561 progbar = delayed_create_progress_dlg(cf->window, "Searching", title,
3562 FALSE, &cf->stop_flag, &start_time, progbar_val);
3564 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
3565 when we update it, we have to run the GTK+ main loop to get it
3566 to repaint what's pending, and doing so may involve an "ioctl()"
3567 to see if there's any pending input from an X server, and doing
3568 that for every packet can be costly, especially on a big file. */
3569 if (count >= progbar_nextstep) {
3570 /* let's not divide by zero. I should never be started
3571 * with count == 0, so let's assert that
3573 g_assert(cf->count > 0);
3575 progbar_val = (gfloat) count / cf->count;
3577 if (progbar != NULL) {
3578 g_snprintf(status_str, sizeof(status_str),
3579 "%4u of %u packets", count, cf->count);
3580 update_progress_dlg(progbar, progbar_val, status_str);
3583 progbar_nextstep += progbar_quantum;
3586 if (cf->stop_flag) {
3587 /* Well, the user decided to abort the search. Go back to the
3588 frame where we started. */
3593 /* Go past the current frame. */
3594 if (dir == SD_BACKWARD) {
3595 /* Go on to the previous frame. */
3596 if (framenum == 1) {
3598 * XXX - other apps have a bit more of a detailed message
3599 * for this, and instead of offering "OK" and "Cancel",
3600 * they offer things such as "Continue" and "Cancel";
3601 * we need an API for popping up alert boxes with
3602 * {Verb} and "Cancel".
3605 if (prefs.gui_find_wrap)
3607 statusbar_push_temporary_msg("Search reached the beginning. Continuing at end.");
3608 framenum = cf->count; /* wrap around */
3612 statusbar_push_temporary_msg("Search reached the beginning.");
3613 framenum = start_fd->num; /* stay on previous packet */
3618 /* Go on to the next frame. */
3619 if (framenum == cf->count) {
3620 if (prefs.gui_find_wrap)
3622 statusbar_push_temporary_msg("Search reached the end. Continuing at beginning.");
3623 framenum = 1; /* wrap around */
3627 statusbar_push_temporary_msg("Search reached the end.");
3628 framenum = start_fd->num; /* stay on previous packet */
3633 fdata = frame_data_sequence_find(cf->frames, framenum);
3637 /* Is this packet in the display? */
3638 if (fdata->flags.passed_dfilter) {
3639 /* Yes. Does it match the search criterion? */
3640 result = (*match_function)(cf, fdata, criterion);
3641 if (result == MR_ERROR) {
3642 /* Error; our caller has reported the error. Go back to the frame
3643 where we started. */
3646 } else if (result == MR_MATCHED) {
3647 /* Yes. Go to the new frame. */
3653 if (fdata == start_fd) {
3654 /* We're back to the frame we were on originally, and that frame
3655 doesn't match the search filter. The search failed. */
3660 /* We're done scanning the packets; destroy the progress bar if it
3662 if (progbar != NULL)
3663 destroy_progress_dlg(progbar);
3666 if (new_fd != NULL) {
3667 /* Find and select */
3668 cf->search_in_progress = TRUE;
3669 found = packet_list_select_row_from_data(new_fd);
3670 cf->search_in_progress = FALSE;
3671 cf->search_pos = 0; /* Reset the position */
3673 /* We didn't find a row corresponding to this frame.
3674 This means that the frame isn't being displayed currently,
3675 so we can't select it. */
3676 simple_message_box(ESD_TYPE_INFO, NULL,
3677 "The capture file is probably not fully dissected.",
3678 "End of capture exceeded.");
3681 return TRUE; /* success */
3683 return FALSE; /* failure */
3687 cf_goto_frame(capture_file *cf, guint fnumber)
3691 fdata = frame_data_sequence_find(cf->frames, fnumber);
3693 if (fdata == NULL) {
3694 /* we didn't find a packet with that packet number */
3695 statusbar_push_temporary_msg("There is no packet number %u.", fnumber);
3696 return FALSE; /* we failed to go to that packet */
3698 if (!fdata->flags.passed_dfilter) {
3699 /* that packet currently isn't displayed */
3700 /* XXX - add it to the set of displayed packets? */
3701 statusbar_push_temporary_msg("Packet number %u isn't displayed.", fnumber);
3702 return FALSE; /* we failed to go to that packet */
3705 if (!packet_list_select_row_from_data(fdata)) {
3706 /* We didn't find a row corresponding to this frame.
3707 This means that the frame isn't being displayed currently,
3708 so we can't select it. */
3709 simple_message_box(ESD_TYPE_INFO, NULL,
3710 "The capture file is probably not fully dissected.",
3711 "End of capture exceeded.");
3714 return TRUE; /* we got to that packet */
3718 cf_goto_top_frame(void)
3720 /* Find and select */
3721 packet_list_select_first_row();
3722 return TRUE; /* we got to that packet */
3726 cf_goto_bottom_frame(void)
3728 /* Find and select */
3729 packet_list_select_last_row();
3730 return TRUE; /* we got to that packet */
3734 * Go to frame specified by currently selected protocol tree item.
3737 cf_goto_framenum(capture_file *cf)
3739 header_field_info *hfinfo;
3742 if (cf->finfo_selected) {
3743 hfinfo = cf->finfo_selected->hfinfo;
3745 if (hfinfo->type == FT_FRAMENUM) {
3746 framenum = fvalue_get_uinteger(&cf->finfo_selected->value);
3748 return cf_goto_frame(cf, framenum);
3755 /* Select the packet on a given row. */
3757 cf_select_packet(capture_file *cf, int row)
3759 epan_dissect_t *old_edt;
3762 /* Get the frame data struct pointer for this frame */
3763 fdata = packet_list_get_row_data(row);
3765 if (fdata == NULL) {
3766 /* XXX - if a GtkCList's selection mode is GTK_SELECTION_BROWSE, when
3767 the first entry is added to it by "real_insert_row()", that row
3768 is selected (see "real_insert_row()", in "ui/gtk/gtkclist.c", in both
3769 our version and the vanilla GTK+ version).
3771 This means that a "select-row" signal is emitted; this causes
3772 "packet_list_select_cb()" to be called, which causes "cf_select_packet()"
3775 "cf_select_packet()" fetches, above, the data associated with the
3776 row that was selected; however, as "gtk_clist_append()", which
3777 called "real_insert_row()", hasn't yet returned, we haven't yet
3778 associated any data with that row, so we get back a null pointer.
3780 We can't assume that there's only one frame in the frame list,
3781 either, as we may be filtering the display.
3783 We therefore assume that, if "row" is 0, i.e. the first row
3784 is being selected, and "cf->first_displayed" equals
3785 "cf->last_displayed", i.e. there's only one frame being
3786 displayed, that frame is the frame we want.
3788 This means we have to set "cf->first_displayed" and
3789 "cf->last_displayed" before adding the row to the
3790 GtkCList; see the comment in "add_packet_to_packet_list()". */
3792 if (row == 0 && cf->first_displayed == cf->last_displayed)
3793 fdata = frame_data_sequence_find(cf->frames, cf->first_displayed);
3796 /* If fdata _still_ isn't set simply give up. */
3797 if (fdata == NULL) {
3801 /* Get the data in that frame. */
3802 if (!cf_read_record (cf, fdata)) {
3806 /* Record that this frame is the current frame. */
3807 cf->current_frame = fdata;
3808 cf->current_row = row;
3811 /* Create the logical protocol tree. */
3812 /* We don't need the columns here. */
3813 cf->edt = epan_dissect_new(cf->epan, TRUE, TRUE);
3815 tap_build_interesting(cf->edt);
3816 epan_dissect_run(cf->edt, cf->cd_t, &cf->phdr, frame_tvbuff_new_buffer(cf->current_frame, &cf->buf),
3817 cf->current_frame, NULL);
3819 dfilter_macro_build_ftv_cache(cf->edt->tree);
3821 cf_callback_invoke(cf_cb_packet_selected, cf);
3823 if (old_edt != NULL)
3824 epan_dissect_free(old_edt);
3828 /* Unselect the selected packet, if any. */
3830 cf_unselect_packet(capture_file *cf)
3832 epan_dissect_t *old_edt = cf->edt;
3836 /* No packet is selected. */
3837 cf->current_frame = NULL;
3838 cf->current_row = 0;
3840 cf_callback_invoke(cf_cb_packet_unselected, cf);
3842 /* No protocol tree means no selected field. */
3843 cf_unselect_field(cf);
3845 /* Destroy the epan_dissect_t for the unselected packet. */
3846 if (old_edt != NULL)
3847 epan_dissect_free(old_edt);
3850 /* Unset the selected protocol tree field, if any. */
3852 cf_unselect_field(capture_file *cf)
3854 cf->finfo_selected = NULL;
3856 cf_callback_invoke(cf_cb_field_unselected, cf);
3860 * Mark a particular frame.
3863 cf_mark_frame(capture_file *cf, frame_data *frame)
3865 if (! frame->flags.marked) {
3866 frame->flags.marked = TRUE;
3867 if (cf->count > cf->marked_count)
3873 * Unmark a particular frame.
3876 cf_unmark_frame(capture_file *cf, frame_data *frame)
3878 if (frame->flags.marked) {
3879 frame->flags.marked = FALSE;
3880 if (cf->marked_count > 0)
3886 * Ignore a particular frame.
3889 cf_ignore_frame(capture_file *cf, frame_data *frame)
3891 if (! frame->flags.ignored) {
3892 frame->flags.ignored = TRUE;
3893 if (cf->count > cf->ignored_count)
3894 cf->ignored_count++;
3899 * Un-ignore a particular frame.
3902 cf_unignore_frame(capture_file *cf, frame_data *frame)
3904 if (frame->flags.ignored) {
3905 frame->flags.ignored = FALSE;
3906 if (cf->ignored_count > 0)
3907 cf->ignored_count--;
3912 * Read the comment in SHB block
3916 cf_read_shb_comment(capture_file *cf)
3918 wtapng_section_t *shb_inf;
3919 const gchar *temp_str;
3921 /* Get info from SHB */
3922 shb_inf = wtap_file_get_shb_info(cf->wth);
3923 if (shb_inf == NULL)
3925 temp_str = shb_inf->opt_comment;
3933 cf_update_capture_comment(capture_file *cf, gchar *comment)
3935 wtapng_section_t *shb_inf;
3937 /* Get info from SHB */
3938 shb_inf = wtap_file_get_shb_info(cf->wth);
3940 /* See if the comment has changed or not */
3941 if (shb_inf && shb_inf->opt_comment) {
3942 if (strcmp(shb_inf->opt_comment, comment) == 0) {
3951 /* The comment has changed, let's update it */
3952 wtap_write_shb_comment(cf->wth, comment);
3953 /* Mark the file as having unsaved changes */
3954 cf->unsaved_changes = TRUE;
3958 cf_get_user_packet_comment(capture_file *cf, const frame_data *fd)
3960 if (cf->frames_user_comments)
3961 return (const char *)g_tree_lookup(cf->frames_user_comments, fd);
3968 cf_get_comment(capture_file *cf, const frame_data *fd)
3972 /* fetch user comment */
3973 if (fd->flags.has_user_comment)
3974 return g_strdup(cf_get_user_packet_comment(cf, fd));
3976 /* fetch phdr comment */
3977 if (fd->flags.has_phdr_comment) {
3978 struct wtap_pkthdr phdr; /* Packet header */
3979 Buffer buf; /* Packet data */
3981 wtap_phdr_init(&phdr);
3982 ws_buffer_init(&buf, 1500);
3984 if (!cf_read_record_r(cf, fd, &phdr, &buf))
3985 { /* XXX, what we can do here? */ }
3987 comment = phdr.opt_comment;
3988 wtap_phdr_cleanup(&phdr);
3989 ws_buffer_free(&buf);
3996 frame_cmp(gconstpointer a, gconstpointer b, gpointer user_data _U_)
3998 const frame_data *fdata1 = (const frame_data *) a;
3999 const frame_data *fdata2 = (const frame_data *) b;
4001 return (fdata1->num < fdata2->num) ? -1 :
4002 (fdata1->num > fdata2->num) ? 1 :
4007 cf_set_user_packet_comment(capture_file *cf, frame_data *fd, const gchar *new_comment)
4009 char *pkt_comment = cf_get_comment(cf, fd);
4011 /* Check if the comment has changed */
4012 if (!g_strcmp0(pkt_comment, new_comment)) {
4013 g_free(pkt_comment);
4016 g_free(pkt_comment);
4019 cf->packet_comment_count--;
4022 cf->packet_comment_count++;
4024 fd->flags.has_user_comment = TRUE;
4026 if (!cf->frames_user_comments)
4027 cf->frames_user_comments = g_tree_new_full(frame_cmp, NULL, NULL, g_free);
4029 /* insert new packet comment */
4030 g_tree_replace(cf->frames_user_comments, fd, g_strdup(new_comment));
4032 expert_update_comment_count(cf->packet_comment_count);
4034 /* OK, we have unsaved changes. */
4035 cf->unsaved_changes = TRUE;
4040 * What types of comments does this capture file have?
4043 cf_comment_types(capture_file *cf)
4045 guint32 comment_types = 0;
4047 if (cf_read_shb_comment(cf) != NULL)
4048 comment_types |= WTAP_COMMENT_PER_SECTION;
4049 if (cf->packet_comment_count != 0)
4050 comment_types |= WTAP_COMMENT_PER_PACKET;
4051 return comment_types;
4054 #ifdef WANT_PACKET_EDITOR
4056 g_direct_compare_func(gconstpointer a, gconstpointer b, gpointer user_data _U_)
4067 modified_frame_data_free(gpointer data)
4069 modified_frame_data *mfd = (modified_frame_data *)data;
4076 * Give a frame new, edited data.
4079 cf_set_frame_edited(capture_file *cf, frame_data *fd,
4080 struct wtap_pkthdr *phdr, guint8 *pd)
4082 modified_frame_data *mfd = (modified_frame_data *)g_malloc(sizeof(modified_frame_data));
4087 if (cf->edited_frames == NULL)
4088 cf->edited_frames = g_tree_new_full(g_direct_compare_func, NULL, NULL,
4089 modified_frame_data_free);
4090 g_tree_insert(cf->edited_frames, GINT_TO_POINTER(fd->num), mfd);
4093 /* Mark the file as having unsaved changes */
4094 cf->unsaved_changes = TRUE;
4102 } save_callback_args_t;
4105 * Save a capture to a file, in a particular format, saving either
4106 * all packets, all currently-displayed packets, or all marked packets.
4108 * Returns TRUE if it succeeds, FALSE otherwise; if it fails, it pops
4109 * up a message box for the failure.
4112 save_record(capture_file *cf, frame_data *fdata,
4113 struct wtap_pkthdr *phdr, const guint8 *pd,
4116 save_callback_args_t *args = (save_callback_args_t *)argsp;
4117 struct wtap_pkthdr hdr;
4120 gchar *display_basename;
4121 const char *pkt_comment;
4123 if (fdata->flags.has_user_comment)
4124 pkt_comment = cf_get_user_packet_comment(cf, fdata);
4126 pkt_comment = phdr->opt_comment;
4128 /* init the wtap header for saving */
4129 /* TODO: reuse phdr */
4130 /* XXX - these are the only flags that correspond to data that we have
4131 in the frame_data structure and that matter on a per-packet basis.
4133 For WTAP_HAS_CAP_LEN, either the file format has separate "captured"
4134 and "on the wire" lengths, or it doesn't.
4136 For WTAP_HAS_DROP_COUNT, Wiretap doesn't actually supply the value
4139 For WTAP_HAS_PACK_FLAGS, we currently don't save the FCS length
4140 from the packet flags. */
4141 hdr.rec_type = phdr->rec_type;
4142 hdr.presence_flags = 0;
4143 if (fdata->flags.has_ts)
4144 hdr.presence_flags |= WTAP_HAS_TS;
4145 if (phdr->presence_flags & WTAP_HAS_INTERFACE_ID)
4146 hdr.presence_flags |= WTAP_HAS_INTERFACE_ID;
4147 if (phdr->presence_flags & WTAP_HAS_PACK_FLAGS)
4148 hdr.presence_flags |= WTAP_HAS_PACK_FLAGS;
4149 hdr.ts.secs = fdata->abs_ts.secs;
4150 hdr.ts.nsecs = fdata->abs_ts.nsecs;
4151 hdr.caplen = phdr->caplen;
4152 hdr.len = phdr->len;
4153 hdr.pkt_encap = fdata->lnk_t;
4155 hdr.interface_id = phdr->interface_id; /* identifier of the interface. */
4157 hdr.pack_flags = phdr->pack_flags;
4158 hdr.opt_comment = g_strdup(pkt_comment);
4161 hdr.pseudo_header = phdr->pseudo_header;
4164 hdr.pack_flags = /* XXX - 0 for now (any value for "we don't have it"?) */
4166 /* and save the packet */
4167 if (!wtap_dump(args->pdh, &hdr, pd, &err, &err_info)) {
4169 /* Wiretap error. */
4172 case WTAP_ERR_UNWRITABLE_ENCAP:
4174 * This is a problem with the particular frame we're writing and
4175 * the file type and subtype we're writing; note that, and report
4176 * the frame number and file type/subtype.
4178 simple_error_message_box(
4179 "Frame %u has a network type that can't be saved in a \"%s\" file.",
4180 fdata->num, wtap_file_type_subtype_string(args->file_type));
4183 case WTAP_ERR_PACKET_TOO_LARGE:
4185 * This is a problem with the particular frame we're writing and
4186 * the file type and subtype we're writing; note that, and report
4187 * the frame number and file type/subtype.
4189 simple_error_message_box(
4190 "Frame %u is larger than Wireshark supports in a \"%s\" file.",
4191 fdata->num, wtap_file_type_subtype_string(args->file_type));
4194 case WTAP_ERR_UNWRITABLE_REC_TYPE:
4196 * This is a problem with the particular record we're writing and
4197 * the file type and subtype we're writing; note that, and report
4198 * the record number and file type/subtype.
4200 simple_error_message_box(
4201 "Record %u has a record type that can't be saved in a \"%s\" file.",
4202 fdata->num, wtap_file_type_subtype_string(args->file_type));
4205 case WTAP_ERR_UNWRITABLE_REC_DATA:
4207 * This is a problem with the particular frame we're writing and
4208 * the file type and subtype we're writing; note that, and report
4209 * the frame number and file type/subtype.
4211 simple_error_message_box(
4212 "Record %u has data that can't be saved in a \"%s\" file.\n(%s)",
4213 fdata->num, wtap_file_type_subtype_string(args->file_type),
4214 err_info != NULL ? err_info : "no information supplied");
4219 display_basename = g_filename_display_basename(args->fname);
4220 simple_error_message_box(
4221 "An error occurred while writing to the file \"%s\": %s.",
4222 display_basename, wtap_strerror(err));
4223 g_free(display_basename);
4228 write_failure_alert_box(args->fname, err);
4233 g_free(hdr.opt_comment);
4238 * Can this capture file be written out in any format using Wiretap
4239 * rather than by copying the raw data?
4242 cf_can_write_with_wiretap(capture_file *cf)
4244 /* We don't care whether we support the comments in this file or not;
4245 if we can't, we'll offer the user the option of discarding the
4247 return wtap_dump_can_write(cf->linktypes, 0);
4251 * Should we let the user do a save?
4255 * the file has unsaved changes, and we can save it in some
4256 * format through Wiretap
4260 * the file is a temporary file and has no unsaved changes (so
4261 * that "saving" it just means copying it).
4263 * XXX - we shouldn't allow files to be edited if they can't be saved,
4264 * so cf->unsaved_changes should be true only if the file can be saved.
4266 * We don't care whether we support the comments in this file or not;
4267 * if we can't, we'll offer the user the option of discarding the
4271 cf_can_save(capture_file *cf)
4273 if (cf->unsaved_changes && wtap_dump_can_write(cf->linktypes, 0)) {
4274 /* Saved changes, and we can write it out with Wiretap. */
4278 if (cf->is_tempfile && !cf->unsaved_changes) {
4280 * Temporary file with no unsaved changes, so we can just do a
4286 /* Nothing to save. */
4291 * Should we let the user do a "save as"?
4295 * we can save it in some format through Wiretap
4299 * the file is a temporary file and has no unsaved changes (so
4300 * that "saving" it just means copying it).
4302 * XXX - we shouldn't allow files to be edited if they can't be saved,
4303 * so cf->unsaved_changes should be true only if the file can be saved.
4305 * We don't care whether we support the comments in this file or not;
4306 * if we can't, we'll offer the user the option of discarding the
4310 cf_can_save_as(capture_file *cf)
4312 if (wtap_dump_can_write(cf->linktypes, 0)) {
4313 /* We can write it out with Wiretap. */
4317 if (cf->is_tempfile && !cf->unsaved_changes) {
4319 * Temporary file with no unsaved changes, so we can just do a
4325 /* Nothing to save. */
4330 * Does this file have unsaved data?
4333 cf_has_unsaved_data(capture_file *cf)
4336 * If this is a temporary file, or a file with unsaved changes, it
4339 return cf->is_tempfile || cf->unsaved_changes;
4343 * Quick scan to find packet offsets.
4345 static cf_read_status_t
4346 rescan_file(capture_file *cf, const char *fname, gboolean is_tempfile, int *err)
4348 const struct wtap_pkthdr *phdr;
4352 progdlg_t *progbar = NULL;
4355 GTimeVal start_time;
4356 gchar status_str[100];
4357 gint64 progbar_nextstep;
4358 gint64 progbar_quantum;
4363 int displayed_once = 0;
4366 /* Close the old handle. */
4367 wtap_close(cf->wth);
4369 /* Open the new file. */
4370 /* XXX: this will go through all open_routines for a matching one. But right
4371 now rescan_file() is only used when a file is being saved to a different
4372 format than the original, and the user is not given a choice of which
4373 reader to use (only which format to save it in), so doing this makes
4375 cf->wth = wtap_open_offline(fname, WTAP_TYPE_AUTO, err, &err_info, TRUE);
4376 if (cf->wth == NULL) {
4377 cf_open_failure_alert_box(fname, *err, err_info, FALSE, 0);
4378 return CF_READ_ERROR;
4381 /* We're scanning a file whose contents should be the same as what
4382 we had before, so we don't discard dissection state etc.. */
4385 /* Set the file name because we need it to set the follow stream filter.
4386 XXX - is that still true? We need it for other reasons, though,
4388 cf->filename = g_strdup(fname);
4390 /* Indicate whether it's a permanent or temporary file. */
4391 cf->is_tempfile = is_tempfile;
4393 /* No user changes yet. */
4394 cf->unsaved_changes = FALSE;
4396 cf->cd_t = wtap_file_type_subtype(cf->wth);
4397 cf->linktypes = g_array_sized_new(FALSE, FALSE, (guint) sizeof(int), 1);
4399 cf->snap = wtap_snapshot_length(cf->wth);
4400 if (cf->snap == 0) {
4401 /* Snapshot length not known. */
4402 cf->has_snap = FALSE;
4403 cf->snap = WTAP_MAX_PACKET_SIZE;
4405 cf->has_snap = TRUE;
4407 name_ptr = g_filename_display_basename(cf->filename);
4409 cf_callback_invoke(cf_cb_file_rescan_started, cf);
4411 /* Record whether the file is compressed.
4412 XXX - do we know this at open time? */
4413 cf->iscompressed = wtap_iscompressed(cf->wth);
4415 /* Find the size of the file. */
4416 size = wtap_file_size(cf->wth, NULL);
4418 /* Update the progress bar when it gets to this value. */
4419 progbar_nextstep = 0;
4420 /* When we reach the value that triggers a progress bar update,
4421 bump that value by this amount. */
4423 progbar_quantum = size/N_PROGBAR_UPDATES;
4424 if (progbar_quantum < MIN_QUANTUM)
4425 progbar_quantum = MIN_QUANTUM;
4427 progbar_quantum = 0;
4429 cf->stop_flag = FALSE;
4430 g_get_current_time(&start_time);
4433 phdr = wtap_phdr(cf->wth);
4434 while ((wtap_read(cf->wth, err, &err_info, &data_offset))) {
4436 fdata = frame_data_sequence_find(cf->frames, framenum);
4437 fdata->file_off = data_offset;
4440 cf->f_datalen = wtap_read_so_far(cf->wth);
4442 /* Create the progress bar if necessary.
4443 * Check whether it should be created or not every MIN_NUMBER_OF_PACKET
4445 if ((progbar == NULL) && !(count % MIN_NUMBER_OF_PACKET)) {
4446 progbar_val = calc_progbar_val(cf, size, cf->f_datalen, status_str, sizeof(status_str));
4447 progbar = delayed_create_progress_dlg(cf->window, "Rescanning", name_ptr,
4448 TRUE, &cf->stop_flag, &start_time, progbar_val);
4451 /* Update the progress bar, but do it only N_PROGBAR_UPDATES times;
4452 when we update it, we have to run the GTK+ main loop to get it
4453 to repaint what's pending, and doing so may involve an "ioctl()"
4454 to see if there's any pending input from an X server, and doing
4455 that for every packet can be costly, especially on a big file. */
4456 if (cf->f_datalen >= progbar_nextstep) {
4457 if (progbar != NULL) {
4458 progbar_val = calc_progbar_val(cf, size, cf->f_datalen, status_str, sizeof(status_str));
4459 /* update the packet bar content on the first run or frequently on very large files */
4461 if (progbar_quantum > 500000 || displayed_once == 0) {
4462 if ((auto_scroll_live || displayed_once == 0 || cf->displayed_count < 1000) && cf->count != 0) {
4464 packets_bar_update();
4467 #endif /* HAVE_LIBPCAP */
4468 update_progress_dlg(progbar, progbar_val, status_str);
4470 progbar_nextstep += progbar_quantum;
4474 if (cf->stop_flag) {
4475 /* Well, the user decided to abort the rescan. Sadly, as this
4476 isn't a reread, recovering is difficult, so we'll just
4477 close the current capture. */
4481 /* Add this packet's link-layer encapsulation type to cf->linktypes, if
4482 it's not already there.
4483 XXX - yes, this is O(N), so if every packet had a different
4484 link-layer encapsulation type, it'd be O(N^2) to read the file, but
4485 there are probably going to be a small number of encapsulation types
4487 cf_add_encapsulation_type(cf, phdr->pkt_encap);
4490 /* Free the display name */
4493 /* We're done reading the file; destroy the progress bar if it was created. */
4494 if (progbar != NULL)
4495 destroy_progress_dlg(progbar);
4497 /* We're done reading sequentially through the file. */
4498 cf->state = FILE_READ_DONE;
4500 /* Close the sequential I/O side, to free up memory it requires. */
4501 wtap_sequential_close(cf->wth);
4503 /* compute the time it took to load the file */
4504 compute_elapsed(cf, &start_time);
4506 /* Set the file encapsulation type now; we don't know what it is until
4507 we've looked at all the packets, as we don't know until then whether
4508 there's more than one type (and thus whether it's
4509 WTAP_ENCAP_PER_PACKET). */
4510 cf->lnk_t = wtap_file_encap(cf->wth);
4512 cf_callback_invoke(cf_cb_file_rescan_finished, cf);
4514 if (cf->stop_flag) {
4515 /* Our caller will give up at this point. */
4516 return CF_READ_ABORTED;
4520 /* Put up a message box noting that the read failed somewhere along
4521 the line. Don't throw out the stuff we managed to read, though,
4525 case WTAP_ERR_UNSUPPORTED:
4526 simple_error_message_box(
4527 "The capture file contains record data that Wireshark doesn't support.\n(%s)",
4528 err_info != NULL ? err_info : "no information supplied");
4532 case WTAP_ERR_SHORT_READ:
4533 simple_error_message_box(
4534 "The capture file appears to have been cut short"
4535 " in the middle of a packet.");
4538 case WTAP_ERR_BAD_FILE:
4539 simple_error_message_box(
4540 "The capture file appears to be damaged or corrupt.\n(%s)",
4541 err_info != NULL ? err_info : "no information supplied");
4545 case WTAP_ERR_DECOMPRESS:
4546 simple_error_message_box(
4547 "The compressed capture file appears to be damaged or corrupt.\n"
4549 err_info != NULL ? err_info : "no information supplied");
4554 simple_error_message_box(
4555 "An error occurred while reading the"
4556 " capture file: %s.", wtap_strerror(*err));
4559 return CF_READ_ERROR;
4565 cf_save_records(capture_file *cf, const char *fname, guint save_format,
4566 gboolean compressed, gboolean discard_comments,
4567 gboolean dont_reopen)
4570 gchar *fname_new = NULL;
4573 addrinfo_lists_t *addr_lists;
4577 gchar *display_basename;
4584 save_callback_args_t callback_args;
4586 cf_callback_invoke(cf_cb_file_save_started, (gpointer)fname);
4588 addr_lists = get_addrinfo_list();
4590 if (save_format == cf->cd_t && compressed == cf->iscompressed
4591 && !discard_comments && !cf->unsaved_changes
4592 && !(addr_lists && wtap_dump_has_name_resolution(save_format))) {
4593 /* We're saving in the format it's already in, and we're
4594 not discarding comments, and there are no changes we have
4595 in memory that aren't saved to the file, and we have no name
4596 resolution blocks to write, so we can just move or copy the raw data. */
4598 if (cf->is_tempfile) {
4599 /* The file being saved is a temporary file from a live
4600 capture, so it doesn't need to stay around under that name;
4601 first, try renaming the capture buffer file to the new name.
4602 This acts as a "safe save", in that, if the file already
4603 exists, the existing file will be removed only if the rename
4606 Sadly, on Windows, as we have the current capture file
4607 open, even MoveFileEx() with MOVEFILE_REPLACE_EXISTING
4608 (to cause the rename to remove an existing target), as
4609 done by ws_stdio_rename() (ws_rename() is #defined to
4610 be ws_stdio_rename() on Windows) will fail.
4612 According to the MSDN documentation for CreateFile(), if,
4613 when we open a capture file, we were to directly do a CreateFile(),
4614 opening with FILE_SHARE_DELETE|FILE_SHARE_READ, and then
4615 convert it to a file descriptor with _open_osfhandle(),
4616 that would allow the file to be renamed out from under us.
4618 However, that doesn't work in practice. Perhaps the problem
4619 is that the process doing the rename is the process that
4620 has the file open. */
4622 if (ws_rename(cf->filename, fname) == 0) {
4623 /* That succeeded - there's no need to copy the source file. */
4624 how_to_save = SAVE_WITH_MOVE;
4626 if (errno == EXDEV) {
4627 /* They're on different file systems, so we have to copy the
4629 how_to_save = SAVE_WITH_COPY;
4631 /* The rename failed, but not because they're on different
4632 file systems - put up an error message. (Or should we
4633 just punt and try to copy? The only reason why I'd
4634 expect the rename to fail and the copy to succeed would
4635 be if we didn't have permission to remove the file from
4636 the temporary directory, and that might be fixable - but
4637 is it worth requiring the user to go off and fix it?) */
4638 cf_rename_failure_alert_box(fname, errno);
4643 how_to_save = SAVE_WITH_COPY;
4646 /* It's a permanent file, so we should copy it, and not remove the
4648 how_to_save = SAVE_WITH_COPY;
4651 if (how_to_save == SAVE_WITH_COPY) {
4652 /* Copy the file, if we haven't moved it. If we're overwriting
4653 an existing file, we do it with a "safe save", by writing
4654 to a new file and, if the write succeeds, renaming the
4655 new file on top of the old file. */
4656 if (file_exists(fname)) {
4657 fname_new = g_strdup_printf("%s~", fname);
4658 if (!copy_file_binary_mode(cf->filename, fname_new))
4661 if (!copy_file_binary_mode(cf->filename, fname))
4666 /* Either we're saving in a different format or we're saving changes,
4667 such as added, modified, or removed comments, that haven't yet
4668 been written to the underlying file; we can't do that by copying
4669 or moving the capture file, we have to do it by writing the packets
4672 wtapng_section_t *shb_hdr = NULL;
4673 wtapng_iface_descriptions_t *idb_inf = NULL;
4676 shb_hdr = wtap_file_get_shb_info(cf->wth);
4677 idb_inf = wtap_file_get_idb_info(cf->wth);
4679 /* Determine what file encapsulation type we should use. */
4680 encap = wtap_dump_file_encap_type(cf->linktypes);
4682 if (file_exists(fname)) {
4683 /* We're overwriting an existing file; write out to a new file,
4684 and, if that succeeds, rename the new file on top of the
4685 old file. That makes this a "safe save", so that we don't
4686 lose the old file if we have a problem writing out the new
4687 file. (If the existing file is the current capture file,
4688 we *HAVE* to do that, otherwise we're overwriting the file
4689 from which we're reading the packets that we're writing!) */
4690 fname_new = g_strdup_printf("%s~", fname);
4691 pdh = wtap_dump_open_ng(fname_new, save_format, encap, cf->snap,
4692 compressed, shb_hdr, idb_inf, &err);
4694 pdh = wtap_dump_open_ng(fname, save_format, encap, cf->snap,
4695 compressed, shb_hdr, idb_inf, &err);
4701 cf_open_failure_alert_box(fname, err, NULL, TRUE, save_format);
4705 /* Add address resolution */
4706 wtap_dump_set_addrinfo_list(pdh, addr_lists);
4708 /* Iterate through the list of packets, processing all the packets. */
4709 callback_args.pdh = pdh;
4710 callback_args.fname = fname;
4711 callback_args.file_type = save_format;
4712 switch (process_specified_records(cf, NULL, "Saving", "packets",
4713 TRUE, save_record, &callback_args)) {
4716 /* Completed successfully. */
4720 /* The user decided to abort the saving.
4721 If we're writing to a temporary file, remove it.
4722 XXX - should we do so even if we're not writing to a
4724 wtap_dump_close(pdh, &err);
4725 if (fname_new != NULL)
4726 ws_unlink(fname_new);
4727 cf_callback_invoke(cf_cb_file_save_stopped, NULL);
4728 return CF_WRITE_ABORTED;
4731 /* Error while saving.
4732 If we're writing to a temporary file, remove it. */
4733 if (fname_new != NULL)
4734 ws_unlink(fname_new);
4735 wtap_dump_close(pdh, &err);
4739 if (!wtap_dump_close(pdh, &err)) {
4740 cf_close_failure_alert_box(fname, err);
4744 how_to_save = SAVE_WITH_WTAP;
4747 if (fname_new != NULL) {
4748 /* We wrote out to fname_new, and should rename it on top of
4749 fname. fname_new is now closed, so that should be possible even
4750 on Windows. However, on Windows, we first need to close whatever
4751 file descriptors we have open for fname. */
4753 wtap_fdclose(cf->wth);
4755 /* Now do the rename. */
4756 if (ws_rename(fname_new, fname) == -1) {
4757 /* Well, the rename failed. */
4758 cf_rename_failure_alert_box(fname, errno);
4760 /* Attempt to reopen the random file descriptor using the
4761 current file's filename. (At this point, the sequential
4762 file descriptor is closed.) */
4763 if (!wtap_fdreopen(cf->wth, cf->filename, &err)) {
4764 /* Oh, well, we're screwed. */
4765 display_basename = g_filename_display_basename(cf->filename);
4766 simple_error_message_box(
4767 file_open_error_message(err, FALSE), display_basename);
4768 g_free(display_basename);
4775 cf_callback_invoke(cf_cb_file_save_finished, NULL);
4776 cf->unsaved_changes = FALSE;
4779 switch (how_to_save) {
4781 case SAVE_WITH_MOVE:
4782 /* We just moved the file, so the wtap structure refers to the
4783 new file, and all the information other than the filename
4784 and the "is temporary" status applies to the new file; just
4786 g_free(cf->filename);
4787 cf->filename = g_strdup(fname);
4788 cf->is_tempfile = FALSE;
4789 cf_callback_invoke(cf_cb_file_fast_save_finished, cf);
4792 case SAVE_WITH_COPY:
4793 /* We just copied the file, s all the information other than
4794 the wtap structure, the filename, and the "is temporary"
4795 status applies to the new file; just update that. */
4796 wtap_close(cf->wth);
4797 /* Although we're just "copying" and then opening the copy, it will
4798 try all open_routine readers to open the copy, so we need to
4799 reset the cfile's open_type. */
4800 cf->open_type = WTAP_TYPE_AUTO;
4801 cf->wth = wtap_open_offline(fname, WTAP_TYPE_AUTO, &err, &err_info, TRUE);
4802 if (cf->wth == NULL) {
4803 cf_open_failure_alert_box(fname, err, err_info, FALSE, 0);
4806 g_free(cf->filename);
4807 cf->filename = g_strdup(fname);
4808 cf->is_tempfile = FALSE;
4810 cf_callback_invoke(cf_cb_file_fast_save_finished, cf);
4813 case SAVE_WITH_WTAP:
4814 /* Open and read the file we saved to.
4816 XXX - this is somewhat of a waste; we already have the
4817 packets, all this gets us is updated file type information
4818 (which we could just stuff into "cf"), and having the new
4819 file be the one we have opened and from which we're reading
4820 the data, and it means we have to spend time opening and
4821 reading the file, which could be a significant amount of
4822 time if the file is large.
4824 If the capture-file-writing code were to return the
4825 seek offset of each packet it writes, we could save that
4826 in the frame_data structure for the frame, and just open
4827 the file without reading it again...
4829 ...as long as, for gzipped files, the process of writing
4830 out the file *also* generates the information needed to
4831 support fast random access to the compressed file. */
4832 /* rescan_file will cause us to try all open_routines, so
4833 reset cfile's open_type */
4834 cf->open_type = WTAP_TYPE_AUTO;
4835 if (rescan_file(cf, fname, FALSE, &err) != CF_READ_OK) {
4836 /* The rescan failed; just close the file. Either
4837 a dialog was popped up for the failure, so the
4838 user knows what happened, or they stopped the
4839 rescan, in which case they know what happened. */
4845 /* If we were told to discard the comments, do so. */
4846 if (discard_comments) {
4847 /* Remove SHB comment, if any. */
4848 wtap_write_shb_comment(cf->wth, NULL);
4850 /* remove all user comments */
4851 for (framenum = 1; framenum <= cf->count; framenum++) {
4852 fdata = frame_data_sequence_find(cf->frames, framenum);
4854 fdata->flags.has_phdr_comment = FALSE;
4855 fdata->flags.has_user_comment = FALSE;
4858 if (cf->frames_user_comments) {
4859 g_tree_destroy(cf->frames_user_comments);
4860 cf->frames_user_comments = NULL;
4863 cf->packet_comment_count = 0;
4869 if (fname_new != NULL) {
4870 /* We were trying to write to a temporary file; get rid of it if it
4871 exists. (We don't care whether this fails, as, if it fails,
4872 there's not much we can do about it. I guess if it failed for
4873 a reason other than "it doesn't exist", we could report an
4874 error, so the user knows there's a junk file that they might
4875 want to clean up.) */
4876 ws_unlink(fname_new);
4879 cf_callback_invoke(cf_cb_file_save_failed, NULL);
4880 return CF_WRITE_ERROR;
4884 cf_export_specified_packets(capture_file *cf, const char *fname,
4885 packet_range_t *range, guint save_format,
4886 gboolean compressed)
4888 gchar *fname_new = NULL;
4891 save_callback_args_t callback_args;
4892 wtapng_section_t *shb_hdr;
4893 wtapng_iface_descriptions_t *idb_inf;
4896 cf_callback_invoke(cf_cb_file_export_specified_packets_started, (gpointer)fname);
4898 packet_range_process_init(range);
4900 /* We're writing out specified packets from the specified capture
4901 file to another file. Even if all captured packets are to be
4902 written, don't special-case the operation - read each packet
4903 and then write it out if it's one of the specified ones. */
4905 shb_hdr = wtap_file_get_shb_info(cf->wth);
4906 idb_inf = wtap_file_get_idb_info(cf->wth);
4908 /* Determine what file encapsulation type we should use. */
4909 encap = wtap_dump_file_encap_type(cf->linktypes);
4911 if (file_exists(fname)) {
4912 /* We're overwriting an existing file; write out to a new file,
4913 and, if that succeeds, rename the new file on top of the
4914 old file. That makes this a "safe save", so that we don't
4915 lose the old file if we have a problem writing out the new
4916 file. (If the existing file is the current capture file,
4917 we *HAVE* to do that, otherwise we're overwriting the file
4918 from which we're reading the packets that we're writing!) */
4919 fname_new = g_strdup_printf("%s~", fname);
4920 pdh = wtap_dump_open_ng(fname_new, save_format, encap, cf->snap,
4921 compressed, shb_hdr, idb_inf, &err);
4923 pdh = wtap_dump_open_ng(fname, save_format, encap, cf->snap,
4924 compressed, shb_hdr, idb_inf, &err);
4930 cf_open_failure_alert_box(fname, err, NULL, TRUE, save_format);
4934 /* Add address resolution */
4935 wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list());
4937 /* Iterate through the list of packets, processing the packets we were
4940 XXX - we've already called "packet_range_process_init(range)", but
4941 "process_specified_records()" will do it again. Fortunately,
4942 that's harmless in this case, as we haven't done anything to
4943 "range" since we initialized it. */
4944 callback_args.pdh = pdh;
4945 callback_args.fname = fname;
4946 callback_args.file_type = save_format;
4947 switch (process_specified_records(cf, range, "Writing", "specified records",
4948 TRUE, save_record, &callback_args)) {
4951 /* Completed successfully. */
4955 /* The user decided to abort the saving.
4956 If we're writing to a temporary file, remove it.
4957 XXX - should we do so even if we're not writing to a
4959 wtap_dump_close(pdh, &err);
4960 if (fname_new != NULL)
4961 ws_unlink(fname_new);
4962 cf_callback_invoke(cf_cb_file_export_specified_packets_stopped, NULL);
4963 return CF_WRITE_ABORTED;
4967 /* Error while saving.
4968 If we're writing to a temporary file, remove it. */
4969 if (fname_new != NULL)
4970 ws_unlink(fname_new);
4971 wtap_dump_close(pdh, &err);
4975 if (!wtap_dump_close(pdh, &err)) {
4976 cf_close_failure_alert_box(fname, err);
4980 if (fname_new != NULL) {
4981 /* We wrote out to fname_new, and should rename it on top of
4982 fname; fname is now closed, so that should be possible even
4983 on Windows. Do the rename. */
4984 if (ws_rename(fname_new, fname) == -1) {
4985 /* Well, the rename failed. */
4986 cf_rename_failure_alert_box(fname, errno);
4991 cf_callback_invoke(cf_cb_file_export_specified_packets_finished, NULL);
4995 if (fname_new != NULL) {
4996 /* We were trying to write to a temporary file; get rid of it if it
4997 exists. (We don't care whether this fails, as, if it fails,
4998 there's not much we can do about it. I guess if it failed for
4999 a reason other than "it doesn't exist", we could report an
5000 error, so the user knows there's a junk file that they might
5001 want to clean up.) */
5002 ws_unlink(fname_new);
5005 cf_callback_invoke(cf_cb_file_export_specified_packets_failed, NULL);
5006 return CF_WRITE_ERROR;
5010 cf_open_failure_alert_box(const char *filename, int err, gchar *err_info,
5011 gboolean for_writing, int file_type)
5013 gchar *display_basename;
5016 /* Wiretap error. */
5017 display_basename = g_filename_display_basename(filename);
5020 case WTAP_ERR_NOT_REGULAR_FILE:
5021 simple_error_message_box(
5022 "The file \"%s\" is a \"special file\" or socket or other non-regular file.",
5026 case WTAP_ERR_RANDOM_OPEN_PIPE:
5027 /* Seen only when opening a capture file for reading. */
5028 simple_error_message_box(
5029 "The file \"%s\" is a pipe or FIFO; Wireshark can't read pipe or FIFO files.\n"
5030 "To capture from a pipe or FIFO use wireshark -i -",
5034 case WTAP_ERR_FILE_UNKNOWN_FORMAT:
5035 /* Seen only when opening a capture file for reading. */
5036 simple_error_message_box(
5037 "The file \"%s\" isn't a capture file in a format Wireshark understands.",
5041 case WTAP_ERR_UNSUPPORTED:
5042 /* Seen only when opening a capture file for reading. */
5043 simple_error_message_box(
5044 "The file \"%s\" contains record data that Wireshark doesn't support.\n",
5047 err_info != NULL ? err_info : "no information supplied");
5051 case WTAP_ERR_CANT_WRITE_TO_PIPE:
5052 /* Seen only when opening a capture file for writing. */
5053 simple_error_message_box(
5054 "The file \"%s\" is a pipe, and %s capture files can't be "
5055 "written to a pipe.",
5056 display_basename, wtap_file_type_subtype_string(file_type));
5059 case WTAP_ERR_UNWRITABLE_FILE_TYPE:
5060 /* Seen only when opening a capture file for writing. */
5061 simple_error_message_box(
5062 "Wireshark doesn't support writing capture files in that format.");
5065 case WTAP_ERR_UNWRITABLE_ENCAP:
5066 /* Seen only when opening a capture file for writing. */
5067 simple_error_message_box("Wireshark can't save this capture in that format.");
5070 case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
5072 simple_error_message_box(
5073 "Wireshark can't save this capture in that format.");
5075 simple_error_message_box(
5076 "The file \"%s\" is a capture for a network type that Wireshark doesn't support.",
5081 case WTAP_ERR_BAD_FILE:
5082 /* Seen only when opening a capture file for reading. */
5083 simple_error_message_box(
5084 "The file \"%s\" appears to be damaged or corrupt.\n"
5087 err_info != NULL ? err_info : "no information supplied");
5091 case WTAP_ERR_CANT_OPEN:
5093 simple_error_message_box(
5094 "The file \"%s\" could not be created for some unknown reason.",
5097 simple_error_message_box(
5098 "The file \"%s\" could not be opened for some unknown reason.",
5103 case WTAP_ERR_SHORT_READ:
5104 simple_error_message_box(
5105 "The file \"%s\" appears to have been cut short"
5106 " in the middle of a packet or other data.",
5110 case WTAP_ERR_SHORT_WRITE:
5111 simple_error_message_box(
5112 "A full header couldn't be written to the file \"%s\".",
5116 case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
5117 simple_error_message_box(
5118 "This file type cannot be written as a compressed file.");
5121 case WTAP_ERR_DECOMPRESS:
5122 simple_error_message_box(
5123 "The compressed file \"%s\" appears to be damaged or corrupt.\n"
5124 "(%s)", display_basename,
5125 err_info != NULL ? err_info : "no information supplied");
5130 simple_error_message_box(
5131 "The file \"%s\" could not be %s: %s.",
5133 for_writing ? "created" : "opened",
5134 wtap_strerror(err));
5137 g_free(display_basename);
5140 open_failure_alert_box(filename, err, for_writing);
5145 * XXX - whether we mention the source pathname, the target pathname,
5146 * or both depends on the error and on what we find if we look for
5147 * one or both of them.
5150 cf_rename_failure_alert_box(const char *filename, int err)
5152 gchar *display_basename;
5154 display_basename = g_filename_display_basename(filename);
5158 /* XXX - should check whether the source exists and, if not,
5159 report it as the problem and, if so, report the destination
5161 simple_error_message_box("The path to the file \"%s\" doesn't exist.",
5166 /* XXX - if we're doing a rename after a safe save, we should
5167 probably say something else. */
5168 simple_error_message_box("You don't have permission to move the capture file to \"%s\".",
5173 /* XXX - this should probably mention both the source and destination
5175 simple_error_message_box("The file \"%s\" could not be moved: %s.",
5176 display_basename, wtap_strerror(err));
5179 g_free(display_basename);
5182 /* Check for write errors - if the file is being written to an NFS server,
5183 a write error may not show up until the file is closed, as NFS clients
5184 might not send writes to the server until the "write()" call finishes,
5185 so that the write may fail on the server but the "write()" may succeed. */
5187 cf_close_failure_alert_box(const char *filename, int err)
5189 gchar *display_basename;
5192 /* Wiretap error. */
5193 display_basename = g_filename_display_basename(filename);
5196 case WTAP_ERR_CANT_CLOSE:
5197 simple_error_message_box(
5198 "The file \"%s\" couldn't be closed for some unknown reason.",
5202 case WTAP_ERR_SHORT_WRITE:
5203 simple_error_message_box(
5204 "Not all the packets could be written to the file \"%s\".",
5209 simple_error_message_box(
5210 "An error occurred while closing the file \"%s\": %s.",
5211 display_basename, wtap_strerror(err));
5214 g_free(display_basename);
5217 We assume that a close error from the OS is really a write error. */
5218 write_failure_alert_box(filename, err);
5222 /* Reload the current capture file. */
5224 cf_reload(capture_file *cf) {
5226 gboolean is_tempfile;
5229 /* If the file could be opened, "cf_open()" calls "cf_close()"
5230 to get rid of state for the old capture file before filling in state
5231 for the new capture file. "cf_close()" will remove the file if
5232 it's a temporary file; we don't want that to happen (for one thing,
5233 it'd prevent subsequent reopens from working). Remember whether it's
5234 a temporary file, mark it as not being a temporary file, and then
5235 reopen it as the type of file it was.
5237 Also, "cf_close()" will free "cf->filename", so we must make
5238 a copy of it first. */
5239 filename = g_strdup(cf->filename);
5240 is_tempfile = cf->is_tempfile;
5241 cf->is_tempfile = FALSE;
5242 if (cf_open(cf, filename, cf->open_type, is_tempfile, &err) == CF_OK) {
5243 switch (cf_read(cf, TRUE)) {
5247 /* Just because we got an error, that doesn't mean we were unable
5248 to read any of the file; we handle what we could get from the
5252 case CF_READ_ABORTED:
5253 /* The user bailed out of re-reading the capture file; the
5254 capture file has been closed - just free the capture file name
5255 string and return (without changing the last containing
5261 /* The open failed, so "cf->is_tempfile" wasn't set to "is_tempfile".
5262 Instead, the file was left open, so we should restore "cf->is_tempfile"
5265 XXX - change the menu? Presumably "cf_open()" will do that;
5266 make sure it does! */
5267 cf->is_tempfile = is_tempfile;
5269 /* "cf_open()" made a copy of the file name we handed it, so
5270 we should free up our copy. */
5280 * indent-tabs-mode: nil
5283 * ex: set shiftwidth=2 tabstop=8 expandtab:
5284 * :indentSize=2:tabSize=8:noTabs=true: