4cdd17a59d
For each displayed packet list row, save a copy of or a pointer to column strings similar to ui/gtk/packet_list_store.c. This lets us call epan_dissect_run only once per row. Bug: 9511 Change-Id: I17e8ebeb5ed70518c9047413c3b2a46f01e904ef Reviewed-on: https://code.wireshark.org/review/2752 Reviewed-by: Anders Broman <a.broman58@gmail.com>
258 lines
7.6 KiB
C++
258 lines
7.6 KiB
C++
/* packet_list_record.cpp
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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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#include "packet_list_record.h"
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#include <file.h>
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#include <epan/epan_dissect.h>
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#include <epan/column-info.h>
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#include <epan/column.h>
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#include "color.h"
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#include "color_filters.h"
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#include "frame_tvbuff.h"
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#include <QStringList>
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QMap<int, int> cinfo_column_;
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PacketListRecord::PacketListRecord(frame_data *frameData) :
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fdata_(frameData),
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// columnized_(false),
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colorized_(false)
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{
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}
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QVariant PacketListRecord::columnString(capture_file *cap_file, int column)
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{
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// packet_list_store.c:packet_list_get_value
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g_assert(fdata_);
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if (!cap_file || column < 0 || column > cap_file->cinfo.num_cols) {
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return QVariant();
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}
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if (column >= col_text_.size() || col_text_[column].isNull() || !colorized_) {
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dissect(cap_file, !colorized_);
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}
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return col_text_.value(column, QByteArray());
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}
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frame_data *PacketListRecord::frameData() {
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return fdata_;
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}
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void PacketListRecord::resetColumns(column_info *cinfo)
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{
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if (!cinfo) {
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return;
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}
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cinfo_column_.clear();
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int i, j;
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for (i = 0, j = 0; i < cinfo->num_cols; i++) {
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if (!col_based_on_frame_data(cinfo, i)) {
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cinfo_column_[i] = j;
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j++;
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}
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}
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}
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void PacketListRecord::dissect(capture_file *cap_file, bool dissect_color)
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{
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// packet_list_store.c:packet_list_dissect_and_cache_record
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epan_dissect_t edt;
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column_info *cinfo = NULL;
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gboolean create_proto_tree;
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struct wtap_pkthdr phdr; /* Packet header */
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Buffer buf; /* Packet data */
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gboolean dissect_columns = col_text_.isEmpty();
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if (!cap_file) {
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return;
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}
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memset(&phdr, 0, sizeof(struct wtap_pkthdr));
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if (dissect_columns) {
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cinfo = &cap_file->cinfo;
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}
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buffer_init(&buf, 1500);
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if (!cf_read_record_r(cap_file, fdata_, &phdr, &buf)) {
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/*
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* Error reading the record.
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*
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* Don't set the color filter for now (we might want
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* to colorize it in some fashion to warn that the
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* row couldn't be filled in or colorized), and
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* set the columns to placeholder values, except
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* for the Info column, where we'll put in an
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* error message.
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*/
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if (dissect_columns) {
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col_fill_in_error(cinfo, fdata_, FALSE, FALSE /* fill_fd_columns */);
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cacheColumnStrings(cinfo);
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}
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if (dissect_color) {
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fdata_->color_filter = NULL;
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colorized_ = TRUE;
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}
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buffer_free(&buf);
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return; /* error reading the record */
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}
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create_proto_tree = (dissect_color && color_filters_used()) ||
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(dissect_columns && have_custom_cols(cinfo));
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epan_dissect_init(&edt, cap_file->epan,
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create_proto_tree,
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FALSE /* proto_tree_visible */);
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if (dissect_color)
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color_filters_prime_edt(&edt);
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if (dissect_columns)
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col_custom_prime_edt(&edt, cinfo);
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/*
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* XXX - need to catch an OutOfMemoryError exception and
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* attempt to recover from it.
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*/
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epan_dissect_run(&edt, cap_file->cd_t, &phdr, frame_tvbuff_new_buffer(fdata_, &buf), fdata_, cinfo);
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if (dissect_color)
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fdata_->color_filter = color_filters_colorize_packet(&edt);
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if (dissect_columns) {
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/* "Stringify" non frame_data vals */
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epan_dissect_fill_in_columns(&edt, FALSE, FALSE /* fill_fd_columns */);
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cacheColumnStrings(cinfo);
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}
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if (dissect_color) {
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colorized_ = true;
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}
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epan_dissect_cleanup(&edt);
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buffer_free(&buf);
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}
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//#define MINIMIZE_STRING_COPYING 1
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void PacketListRecord::cacheColumnStrings(column_info *cinfo)
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{
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// packet_list_store.c:packet_list_change_record(PacketList *packet_list, PacketListRecord *record, gint col, column_info *cinfo)
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if (!cinfo) {
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return;
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}
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col_text_.clear();
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for (int column = 0; column < cinfo->num_cols; ++column) {
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#ifdef MINIMIZE_STRING_COPYING
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int text_col = cinfo_column_.value(column, -1);
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/* Column based on frame_data or it already contains a value */
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if (text_col < 0) {
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col_fill_in_frame_data(fdata_, cinfo, column, FALSE);
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col_text_.append(cinfo->col_data[column]);
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continue;
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}
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switch (cinfo->col_fmt[column]) {
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case COL_DEF_SRC:
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case COL_RES_SRC: /* COL_DEF_SRC is currently just like COL_RES_SRC */
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case COL_UNRES_SRC:
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case COL_DEF_DL_SRC:
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case COL_RES_DL_SRC:
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case COL_UNRES_DL_SRC:
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case COL_DEF_NET_SRC:
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case COL_RES_NET_SRC:
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case COL_UNRES_NET_SRC:
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case COL_DEF_DST:
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case COL_RES_DST: /* COL_DEF_DST is currently just like COL_RES_DST */
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case COL_UNRES_DST:
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case COL_DEF_DL_DST:
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case COL_RES_DL_DST:
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case COL_UNRES_DL_DST:
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case COL_DEF_NET_DST:
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case COL_RES_NET_DST:
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case COL_UNRES_NET_DST:
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case COL_PROTOCOL:
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case COL_INFO:
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case COL_IF_DIR:
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case COL_DCE_CALL:
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case COL_8021Q_VLAN_ID:
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case COL_EXPERT:
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case COL_FREQ_CHAN:
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if (cinfo->col_data[column] && cinfo->col_data[column] != cinfo->col_buf[column]) {
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/* This is a constant string, so we don't have to copy it */
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// XXX - ui/gtk/packet_list_store.c uses G_MAXUSHORT. We don't do proper UTF8
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// truncation in either case.
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int col_text_len = MIN(qstrlen(cinfo->col_data[column]) + 1, COL_MAX_INFO_LEN);
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col_text_.append(QByteArray::fromRawData(cinfo->col_data[column], col_text_len));
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break;
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}
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/* !! FALL-THROUGH!! */
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default:
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if (!get_column_resolved(column) && cinfo->col_expr.col_expr_val[column]) {
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/* Use the unresolved value in col_expr_val */
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// XXX Use QContiguousCache?
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col_text_.append(cinfo->col_expr.col_expr_val[column]);
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} else {
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col_text_.append(cinfo->col_data[column]);
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}
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break;
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}
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#else // MINIMIZE_STRING_COPYING
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// XXX Use QContiguousCache?
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if (!get_column_resolved(column) && cinfo->col_expr.col_expr_val[column]) {
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/* Use the unresolved value in col_expr_val */
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col_text_.append(cinfo->col_expr.col_expr_val[column]);
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} else {
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int text_col = cinfo_column_.value(column, -1);
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if (text_col < 0) {
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col_fill_in_frame_data(fdata_, cinfo, column, FALSE);
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}
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col_text_.append(cinfo->col_data[column]);
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}
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#endif // MINIMIZE_STRING_COPYING
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}
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}
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/*
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* Editor modelines
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*
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* Local Variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* ex: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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