bf81b42e1e
(COPYING will be updated in next commit) svn path=/trunk/; revision=43536
364 lines
12 KiB
C
364 lines
12 KiB
C
/* packet-range.c
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* Packet range routines (save, print, ...)
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*
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* $Id$
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*
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* Dick Gooris <gooris@lucent.com>
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* Ulf Lamping <ulf.lamping@web.de>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include <glib.h>
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#include <epan/frame_data.h>
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#include "globals.h"
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#include "packet-range.h"
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/* (re-)calculate the packet counts (except the user specified range) */
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static void packet_range_calc(packet_range_t *range) {
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guint32 framenum;
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guint32 mark_low;
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guint32 mark_high;
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guint32 displayed_mark_low;
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guint32 displayed_mark_high;
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frame_data *packet;
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range->selected_packet = 0L;
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mark_low = 0L;
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mark_high = 0L;
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range->mark_range_cnt = 0L;
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range->ignored_cnt = 0L;
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range->ignored_marked_cnt = 0L;
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range->ignored_mark_range_cnt = 0L;
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range->ignored_user_range_cnt = 0L;
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displayed_mark_low = 0L;
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displayed_mark_high = 0L;
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range->displayed_cnt = 0L;
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range->displayed_marked_cnt = 0L;
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range->displayed_mark_range_cnt=0L;
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range->displayed_plus_dependents_cnt = 0L;
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range->displayed_ignored_cnt = 0L;
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range->displayed_ignored_marked_cnt = 0L;
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range->displayed_ignored_mark_range_cnt = 0L;
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range->displayed_ignored_user_range_cnt = 0L;
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/* XXX - this doesn't work unless you have a full set of frame_data
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* structures for all packets in the capture, which is not,
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* for example, the case when TShark is doing a one-pass
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* read of a file or a live capture.
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*
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* It's also horribly slow on large captures, causing it to
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* take a long time for the Save As dialog to pop up, for
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* example. We should really keep these statistics in
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* the capture_file structure, updating them whenever we
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* filter the display, etc..
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*/
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if (cfile.frames != NULL) {
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/* The next for-loop is used to obtain the amount of packets
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* to be processed and is used to present the information in
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* the Save/Print As widget.
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* We have different types of ranges: All the packets, the number
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* of packets of a marked range, a single packet, and a user specified
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* packet range. The last one is not calculated here since this
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* data must be entered in the widget by the user.
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*/
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for(framenum = 1; framenum <= cfile.count; framenum++) {
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packet = frame_data_sequence_find(cfile.frames, framenum);
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if (cfile.current_frame == packet) {
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range->selected_packet = framenum;
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}
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if (packet->flags.passed_dfilter) {
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range->displayed_cnt++;
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}
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if (packet->flags.passed_dfilter ||
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packet->flags.dependent_of_displayed) {
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range->displayed_plus_dependents_cnt++;
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}
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if (packet->flags.marked) {
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if (packet->flags.ignored) {
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range->ignored_marked_cnt++;
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}
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if (packet->flags.passed_dfilter) {
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range->displayed_marked_cnt++;
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if (packet->flags.ignored) {
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range->displayed_ignored_marked_cnt++;
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}
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if (displayed_mark_low == 0) {
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displayed_mark_low = framenum;
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}
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if (framenum > displayed_mark_high) {
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displayed_mark_high = framenum;
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}
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}
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if (mark_low == 0) {
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mark_low = framenum;
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}
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if (framenum > mark_high) {
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mark_high = framenum;
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}
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}
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if (packet->flags.ignored) {
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range->ignored_cnt++;
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if (packet->flags.passed_dfilter) {
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range->displayed_ignored_cnt++;
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}
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}
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}
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for(framenum = 1; framenum <= cfile.count; framenum++) {
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packet = frame_data_sequence_find(cfile.frames, framenum);
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if (framenum >= mark_low &&
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framenum <= mark_high)
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{
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range->mark_range_cnt++;
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if (packet->flags.ignored) {
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range->ignored_mark_range_cnt++;
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}
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}
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if (framenum >= displayed_mark_low &&
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framenum <= displayed_mark_high)
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{
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if (packet->flags.passed_dfilter) {
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range->displayed_mark_range_cnt++;
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if (packet->flags.ignored) {
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range->displayed_ignored_mark_range_cnt++;
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}
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}
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}
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}
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#if 0
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/* in case we marked just one packet, we add 1. */
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if (cfile.marked_count != 0) {
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range->mark_range = mark_high - mark_low + 1;
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}
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/* in case we marked just one packet, we add 1. */
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if (range->displayed_marked_cnt != 0) {
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range->displayed_mark_range = displayed_mark_high - displayed_mark_low + 1;
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}
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#endif
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}
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}
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/* (re-)calculate the user specified packet range counts */
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static void packet_range_calc_user(packet_range_t *range) {
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guint32 framenum;
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frame_data *packet;
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range->user_range_cnt = 0L;
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range->ignored_user_range_cnt = 0L;
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range->displayed_user_range_cnt = 0L;
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range->displayed_ignored_user_range_cnt = 0L;
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/* XXX - this doesn't work unless you have a full set of frame_data
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* structures for all packets in the capture, which is not,
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* for example, the case when TShark is doing a one-pass
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* read of a file or a live capture.
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*
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* It's also horribly slow on large captures, causing it to
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* take a long time for the Save As dialog to pop up, for
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* example. This obviously can't be kept in the capture_file
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* structure and recalculated whenever we filter the display
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* or mark frames as ignored, as the results of this depend
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* on what the user specifies. In some cases, limiting the
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* frame_data structures at which we look to the ones specified
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* by the user might help, but if most of the frames are in
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* the range, that won't help. In that case, if we could
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* examine the *complement* of the range, and *subtract* them
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* from the statistics for the capture as a whole, that might
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* help, but if the user specified about *half* the packets in
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* the range, that won't help, either.
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*/
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if (cfile.frames != NULL) {
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for(framenum = 1; framenum <= cfile.count; framenum++) {
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packet = frame_data_sequence_find(cfile.frames, framenum);
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if (value_is_in_range(range->user_range, framenum)) {
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range->user_range_cnt++;
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if (packet->flags.ignored) {
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range->ignored_user_range_cnt++;
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}
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if (packet->flags.passed_dfilter) {
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range->displayed_user_range_cnt++;
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if (packet->flags.ignored) {
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range->displayed_ignored_user_range_cnt++;
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}
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}
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}
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}
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}
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}
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/* init the range struct */
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void packet_range_init(packet_range_t *range) {
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range->process = range_process_all;
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range->process_filtered = FALSE;
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range->remove_ignored = FALSE;
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range->user_range = range_empty();
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/* calculate all packet range counters */
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packet_range_calc(range);
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packet_range_calc_user(range);
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}
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/* check whether the packet range is OK */
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convert_ret_t packet_range_check(packet_range_t *range) {
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if (range->process == range_process_user_range && range->user_range == NULL) {
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/* Not valid - return the error. */
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return range->user_range_status;
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}
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return CVT_NO_ERROR;
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}
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/* init the processing run */
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void packet_range_process_init(packet_range_t *range) {
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/* Check that, if an explicit range was selected, it's valid. */
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/* "enumeration" values */
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range->marked_range_active = FALSE;
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range->selected_done = FALSE;
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if (range->process_filtered == FALSE) {
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range->marked_range_left = range->mark_range_cnt;
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} else {
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range->marked_range_left = range->displayed_mark_range_cnt;
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}
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}
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/* do we have to process all packets? */
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gboolean packet_range_process_all(packet_range_t *range) {
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return range->process == range_process_all && !range->process_filtered && !range->remove_ignored;
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}
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/* do we have to process this packet? */
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range_process_e packet_range_process_packet(packet_range_t *range, frame_data *fdata) {
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if (range->remove_ignored && fdata->flags.ignored) {
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return range_process_next;
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}
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switch(range->process) {
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case(range_process_all):
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break;
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case(range_process_selected):
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if (range->selected_done) {
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return range_processing_finished;
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}
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if (fdata->num != cfile.current_frame->num) {
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return range_process_next;
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}
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range->selected_done = TRUE;
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break;
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case(range_process_marked):
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if (fdata->flags.marked == FALSE) {
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return range_process_next;
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}
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break;
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case(range_process_marked_range):
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if (range->marked_range_left == 0) {
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return range_processing_finished;
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}
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if (fdata->flags.marked == TRUE) {
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range->marked_range_active = TRUE;
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}
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if (range->marked_range_active == FALSE ) {
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return range_process_next;
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}
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if (!range->process_filtered ||
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(range->process_filtered && fdata->flags.passed_dfilter == TRUE))
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{
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range->marked_range_left--;
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}
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break;
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case(range_process_user_range):
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if (value_is_in_range(range->user_range, fdata->num) == FALSE) {
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return range_process_next;
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}
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break;
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default:
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g_assert_not_reached();
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}
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/* This packet has to pass the display filter but didn't?
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* Try next, but only if we're not including dependent packets and this
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* packet happens to be a dependency on something that is displayed.
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*/
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if ((range->process_filtered && fdata->flags.passed_dfilter == FALSE) &&
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!(range->include_dependents && fdata->flags.dependent_of_displayed)) {
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return range_process_next;
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}
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/* We fell through the conditions above, so we accept this packet */
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return range_process_this;
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}
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/******************** Range Entry Parser *********************************/
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/* Converts a range string to a user range.
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* The parameter 'es' points to the string to be converted, and is defined in
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* the Save/Print-As widget.
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*/
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void packet_range_convert_str(packet_range_t *range, const gchar *es)
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{
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range_t *new_range;
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convert_ret_t ret;
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if (range->user_range != NULL)
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g_free(range->user_range);
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ret = range_convert_str(&new_range, es, cfile.count);
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if (ret != CVT_NO_ERROR) {
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/* range isn't valid */
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range->user_range = NULL;
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range->user_range_status = ret;
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range->user_range_cnt = 0L;
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range->ignored_user_range_cnt = 0L;
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range->displayed_user_range_cnt = 0L;
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range->displayed_ignored_user_range_cnt = 0L;
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return;
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}
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range->user_range = new_range;
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/* calculate new user specified packet range counts */
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packet_range_calc_user(range);
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} /* packet_range_convert_str */
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