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wireshark/ui/qt/models/packet_list_model.cpp

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/* packet_list_model.cpp
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <algorithm>
#include <glib.h>
#include <cmath>
#include <stdexcept>
#include "packet_list_model.h"
#include "file.h"
#include <wsutil/nstime.h>
#include <epan/column.h>
#include <epan/expert.h>
#include <epan/prefs.h>
#include "ui/packet_list_utils.h"
#include "ui/recent.h"
#include <epan/color_filters.h>
#include "frame_tvbuff.h"
#include <ui/qt/utils/color_utils.h>
#include <ui/qt/utils/qt_ui_utils.h>
#include "main_application.h"
#include <ui/qt/main_window.h>
#include <ui/qt/main_status_bar.h>
#include <ui/qt/widgets/wireless_timeline.h>
#include <QColor>
#include <QElapsedTimer>
#include <QFontMetrics>
#include <QModelIndex>
#include <QElapsedTimer>
// Print timing information
//#define DEBUG_PACKET_LIST_MODEL 1
#ifdef DEBUG_PACKET_LIST_MODEL
#include <wsutil/time_util.h>
#endif
class SortAbort : public std::runtime_error
{
using std::runtime_error::runtime_error;
};
static PacketListModel * glbl_plist_model = Q_NULLPTR;
static const int reserved_packets_ = 100000;
guint
packet_list_append(column_info *, frame_data *fdata)
{
if (!glbl_plist_model)
return 0;
/* fdata should be filled with the stuff we need
* strings are built at display time.
*/
return glbl_plist_model->appendPacket(fdata);
}
void
packet_list_recreate_visible_rows(void)
{
if (glbl_plist_model)
glbl_plist_model->recreateVisibleRows();
}
PacketListModel::PacketListModel(QObject *parent, capture_file *cf) :
QAbstractItemModel(parent),
number_to_row_(QVector<int>()),
max_row_height_(0),
max_line_count_(1),
idle_dissection_row_(0)
{
Q_ASSERT(glbl_plist_model == Q_NULLPTR);
glbl_plist_model = this;
setCaptureFile(cf);
physical_rows_.reserve(reserved_packets_);
visible_rows_.reserve(reserved_packets_);
new_visible_rows_.reserve(1000);
number_to_row_.reserve(reserved_packets_);
if (qobject_cast<MainWindow *>(mainApp->mainWindow()))
{
MainWindow *mw = qobject_cast<MainWindow *>(mainApp->mainWindow());
QWidget * wtWidget = mw->findChild<WirelessTimeline *>();
if (wtWidget && qobject_cast<WirelessTimeline *>(wtWidget))
{
WirelessTimeline * wt = qobject_cast<WirelessTimeline *>(wtWidget);
connect(this, &PacketListModel::bgColorizationProgress,
wt, &WirelessTimeline::bgColorizationProgress);
}
}
connect(this, &PacketListModel::maxLineCountChanged,
this, &PacketListModel::emitItemHeightChanged,
Qt::QueuedConnection);
idle_dissection_timer_ = new QElapsedTimer();
}
PacketListModel::~PacketListModel()
{
delete idle_dissection_timer_;
}
void PacketListModel::setCaptureFile(capture_file *cf)
{
cap_file_ = cf;
}
// Packet list records have no children (for now, at least).
QModelIndex PacketListModel::index(int row, int column, const QModelIndex &) const
{
if (row >= visible_rows_.count() || row < 0 || !cap_file_ || column >= prefs.num_cols)
return QModelIndex();
PacketListRecord *record = visible_rows_[row];
return createIndex(row, column, record);
}
// Everything is under the root.
QModelIndex PacketListModel::parent(const QModelIndex &) const
{
return QModelIndex();
}
int PacketListModel::packetNumberToRow(int packet_num) const
{
// map 1-based values to 0-based row numbers. Invisible rows are stored as
// the default value (0) and should map to -1.
return number_to_row_.value(packet_num) - 1;
}
guint PacketListModel::recreateVisibleRows()
{
beginResetModel();
visible_rows_.resize(0);
number_to_row_.fill(0);
endResetModel();
foreach (PacketListRecord *record, physical_rows_) {
frame_data *fdata = record->frameData();
if (fdata->passed_dfilter || fdata->ref_time) {
visible_rows_ << record;
if (static_cast<guint32>(number_to_row_.size()) <= fdata->num) {
number_to_row_.resize(fdata->num + 10000);
}
number_to_row_[fdata->num] = static_cast<int>(visible_rows_.count());
}
}
if (!visible_rows_.isEmpty()) {
beginInsertRows(QModelIndex(), 0, static_cast<int>(visible_rows_.count()) - 1);
endInsertRows();
}
idle_dissection_row_ = 0;
return static_cast<guint>(visible_rows_.count());
}
void PacketListModel::clear() {
beginResetModel();
qDeleteAll(physical_rows_);
PacketListRecord::invalidateAllRecords();
physical_rows_.resize(0);
visible_rows_.resize(0);
new_visible_rows_.resize(0);
number_to_row_.resize(0);
endResetModel();
max_row_height_ = 0;
max_line_count_ = 1;
idle_dissection_row_ = 0;
}
void PacketListModel::invalidateAllColumnStrings()
{
PacketListRecord::invalidateAllRecords();
emit dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1),
QVector<int>() << Qt::DisplayRole);
}
void PacketListModel::resetColumns()
{
if (cap_file_) {
PacketListRecord::resetColumns(&cap_file_->cinfo);
}
emit dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1));
emit headerDataChanged(Qt::Horizontal, 0, columnCount() - 1);
}
void PacketListModel::resetColorized()
{
PacketListRecord::resetColorization();
emit dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1),
QVector<int>() << Qt::BackgroundRole << Qt::ForegroundRole);
}
void PacketListModel::toggleFrameMark(const QModelIndexList &indeces)
{
if (!cap_file_ || indeces.count() <= 0)
return;
int sectionMax = columnCount() - 1;
foreach (QModelIndex index, indeces) {
if (! index.isValid())
continue;
PacketListRecord *record = static_cast<PacketListRecord*>(index.internalPointer());
if (!record)
continue;
frame_data *fdata = record->frameData();
if (!fdata)
continue;
if (fdata->marked)
cf_unmark_frame(cap_file_, fdata);
else
cf_mark_frame(cap_file_, fdata);
emit dataChanged(index.sibling(index.row(), 0), index.sibling(index.row(), sectionMax),
QVector<int>() << Qt::BackgroundRole << Qt::ForegroundRole);
}
}
void PacketListModel::setDisplayedFrameMark(gboolean set)
{
foreach (PacketListRecord *record, visible_rows_) {
if (set) {
cf_mark_frame(cap_file_, record->frameData());
} else {
cf_unmark_frame(cap_file_, record->frameData());
}
}
emit dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1),
QVector<int>() << Qt::BackgroundRole << Qt::ForegroundRole);
}
void PacketListModel::toggleFrameIgnore(const QModelIndexList &indeces)
{
if (!cap_file_ || indeces.count() <= 0)
return;
int sectionMax = columnCount() - 1;
foreach (QModelIndex index, indeces) {
if (! index.isValid())
continue;
PacketListRecord *record = static_cast<PacketListRecord*>(index.internalPointer());
if (!record)
continue;
frame_data *fdata = record->frameData();
if (!fdata)
continue;
if (fdata->ignored)
cf_unignore_frame(cap_file_, fdata);
else
cf_ignore_frame(cap_file_, fdata);
emit dataChanged(index.sibling(index.row(), 0), index.sibling(index.row(), sectionMax),
QVector<int>() << Qt::BackgroundRole << Qt::ForegroundRole << Qt::DisplayRole);
}
}
void PacketListModel::setDisplayedFrameIgnore(gboolean set)
{
foreach (PacketListRecord *record, visible_rows_) {
if (set) {
cf_ignore_frame(cap_file_, record->frameData());
} else {
cf_unignore_frame(cap_file_, record->frameData());
}
}
emit dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1),
QVector<int>() << Qt::BackgroundRole << Qt::ForegroundRole << Qt::DisplayRole);
}
void PacketListModel::toggleFrameRefTime(const QModelIndex &rt_index)
{
if (!cap_file_ || !rt_index.isValid()) return;
PacketListRecord *record = static_cast<PacketListRecord*>(rt_index.internalPointer());
if (!record) return;
frame_data *fdata = record->frameData();
if (!fdata) return;
if (fdata->ref_time) {
fdata->ref_time=0;
cap_file_->ref_time_count--;
} else {
fdata->ref_time=1;
cap_file_->ref_time_count++;
}
cf_reftime_packets(cap_file_);
if (!fdata->ref_time && !fdata->passed_dfilter) {
cap_file_->displayed_count--;
}
record->resetColumns(&cap_file_->cinfo);
emit dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1));
}
void PacketListModel::unsetAllFrameRefTime()
{
if (!cap_file_) return;
/* XXX: we might need a progressbar here */
foreach (PacketListRecord *record, physical_rows_) {
frame_data *fdata = record->frameData();
if (fdata->ref_time) {
fdata->ref_time = 0;
}
}
cap_file_->ref_time_count = 0;
cf_reftime_packets(cap_file_);
PacketListRecord::resetColumns(&cap_file_->cinfo);
emit dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1));
}
void PacketListModel::addFrameComment(const QModelIndexList &indices, const QByteArray &comment)
{
int sectionMax = columnCount() - 1;
frame_data *fdata;
if (!cap_file_) return;
foreach (const auto &index, std::as_const(indices)) {
if (!index.isValid()) continue;
PacketListRecord *record = static_cast<PacketListRecord*>(index.internalPointer());
if (!record) continue;
fdata = record->frameData();
wtap_block_t pkt_block = cf_get_packet_block(cap_file_, fdata);
wtap_block_add_string_option(pkt_block, OPT_COMMENT, comment.data(), comment.size());
if (!cf_set_modified_block(cap_file_, fdata, pkt_block)) {
cap_file_->packet_comment_count++;
expert_update_comment_count(cap_file_->packet_comment_count);
}
// In case there are coloring rules or columns related to comments.
// (#12519)
//
// XXX: "Does any active coloring rule relate to frame data"
// could be an optimization. For columns, note that
// "col_based_on_frame_data" only applies to built in columns,
// not custom columns based on frame data. (Should we prevent
// custom columns based on frame data from being created,
// substituting them with the other columns?)
//
// Note that there are not currently any fields that depend on
// whether other frames have comments, unlike with time references
// and time shifts ("frame.time_relative", "frame.offset_shift", etc.)
// If there were, then we'd need to reset data for all frames instead
// of just the frames changed.
record->invalidateColorized();
record->invalidateRecord();
emit dataChanged(index.sibling(index.row(), 0), index.sibling(index.row(), sectionMax),
QVector<int>() << Qt::BackgroundRole << Qt::ForegroundRole << Qt::DisplayRole);
}
}
void PacketListModel::setFrameComment(const QModelIndex &index, const QByteArray &comment, guint c_number)
{
int sectionMax = columnCount() - 1;
frame_data *fdata;
if (!cap_file_) return;
if (!index.isValid()) return;
PacketListRecord *record = static_cast<PacketListRecord*>(index.internalPointer());
if (!record) return;
fdata = record->frameData();
wtap_block_t pkt_block = cf_get_packet_block(cap_file_, fdata);
if (comment.isEmpty()) {
wtap_block_remove_nth_option_instance(pkt_block, OPT_COMMENT, c_number);
if (!cf_set_modified_block(cap_file_, fdata, pkt_block)) {
cap_file_->packet_comment_count--;
expert_update_comment_count(cap_file_->packet_comment_count);
}
} else {
wtap_block_set_nth_string_option_value(pkt_block, OPT_COMMENT, c_number, comment.data(), comment.size());
cf_set_modified_block(cap_file_, fdata, pkt_block);
}
record->invalidateColorized();
record->invalidateRecord();
emit dataChanged(index.sibling(index.row(), 0), index.sibling(index.row(), sectionMax),
QVector<int>() << Qt::BackgroundRole << Qt::ForegroundRole << Qt::DisplayRole);
}
void PacketListModel::deleteFrameComments(const QModelIndexList &indices)
{
int sectionMax = columnCount() - 1;
frame_data *fdata;
if (!cap_file_) return;
foreach (const auto &index, std::as_const(indices)) {
if (!index.isValid()) continue;
PacketListRecord *record = static_cast<PacketListRecord*>(index.internalPointer());
if (!record) continue;
fdata = record->frameData();
wtap_block_t pkt_block = cf_get_packet_block(cap_file_, fdata);
guint n_comments = wtap_block_count_option(pkt_block, OPT_COMMENT);
if (n_comments) {
for (guint i = 0; i < n_comments; i++) {
wtap_block_remove_nth_option_instance(pkt_block, OPT_COMMENT, 0);
}
if (!cf_set_modified_block(cap_file_, fdata, pkt_block)) {
cap_file_->packet_comment_count -= n_comments;
expert_update_comment_count(cap_file_->packet_comment_count);
}
record->invalidateColorized();
record->invalidateRecord();
emit dataChanged(index.sibling(index.row(), 0), index.sibling(index.row(), sectionMax),
QVector<int>() << Qt::BackgroundRole << Qt::ForegroundRole << Qt::DisplayRole);
}
}
}
void PacketListModel::deleteAllFrameComments()
{
int row;
int sectionMax = columnCount() - 1;
if (!cap_file_) return;
/* XXX: we might need a progressbar here */
foreach (PacketListRecord *record, physical_rows_) {
frame_data *fdata = record->frameData();
wtap_block_t pkt_block = cf_get_packet_block(cap_file_, fdata);
guint n_comments = wtap_block_count_option(pkt_block, OPT_COMMENT);
if (n_comments) {
for (guint i = 0; i < n_comments; i++) {
wtap_block_remove_nth_option_instance(pkt_block, OPT_COMMENT, 0);
}
cf_set_modified_block(cap_file_, fdata, pkt_block);
record->invalidateColorized();
record->invalidateRecord();
row = packetNumberToRow(fdata->num);
if (row > -1) {
emit dataChanged(index(row, 0), index(row, sectionMax),
QVector<int>() << Qt::BackgroundRole << Qt::ForegroundRole << Qt::DisplayRole);
}
}
}
cap_file_->packet_comment_count = 0;
expert_update_comment_count(cap_file_->packet_comment_count);
}
void PacketListModel::setMaximumRowHeight(int height)
{
max_row_height_ = height;
// As the QTreeView uniformRowHeights documentation says,
// "The height is obtained from the first item in the view. It is
// updated when the data changes on that item."
emit dataChanged(index(0, 0), index(0, columnCount() - 1));
}
int PacketListModel::sort_column_;
int PacketListModel::sort_column_is_numeric_;
int PacketListModel::text_sort_column_;
Qt::SortOrder PacketListModel::sort_order_;
capture_file *PacketListModel::sort_cap_file_;
gboolean PacketListModel::stop_flag_;
ProgressFrame *PacketListModel::progress_frame_;
double PacketListModel::comps_;
double PacketListModel::exp_comps_;
QElapsedTimer busy_timer_;
const int busy_timeout_ = 65; // ms, approximately 15 fps
void PacketListModel::sort(int column, Qt::SortOrder order)
{
if (!cap_file_ || visible_rows_.count() < 1) return;
if (column < 0) return;
if (physical_rows_.count() < 1)
return;
sort_column_ = column;
text_sort_column_ = PacketListRecord::textColumn(column);
sort_order_ = order;
sort_cap_file_ = cap_file_;
QString col_title = get_column_title(column);
if (text_sort_column_ >= 0 && (guint)visible_rows_.count() > prefs.gui_packet_list_cached_rows_max) {
/* Column not based on frame data but by column text that requires
* dissection, so to sort in a reasonable amount of time the column
* text needs to be cached.
*/
/* If the sort is being triggered because the columns were already
* sorted and the filter is being cleared (or changed to something
* else with more rows than fit in the cache), then the temporary
* message will be immediately overwritten with the standard capture
* statistics by the packets_bar_update() call after thawing the rows.
* It will still blink yellow, and the user will get the message if
* they then click on the header file (wondering why it didn't sort.)
*/
if (col_title.isEmpty()) {
col_title = tr("Column");
}
QString temp_msg = tr("%1 can only be sorted with %2 or fewer visible rows; increase cache size in Layout preferences").arg(col_title).arg(prefs.gui_packet_list_cached_rows_max);
mainApp->pushStatus(MainApplication::TemporaryStatus, temp_msg);
return;
}
/* If we are currently in the middle of reading the capture file, don't
* sort. PacketList::captureFileReadFinished invalidates all the cached
* column strings and then tries to sort again.
* Similarly, claim the read lock because we don't want the file to
* change out from under us while sorting, which can segfault. (Previously
* we ignored user input, but now in order to cancel sorting we don't.)
*/
if (sort_cap_file_->read_lock) {
ws_info("Refusing to sort because capture file is being read");
/* We shouldn't have to tell the user because we're just deferring
* the sort until PacketList::captureFileReadFinished
*/
return;
}
sort_cap_file_->read_lock = TRUE;
QString busy_msg;
if (!col_title.isEmpty()) {
busy_msg = tr("Sorting \"%1\"…").arg(col_title);
} else {
busy_msg = tr("Sorting …");
}
stop_flag_ = FALSE;
comps_ = 0;
/* XXX: The expected number of comparisons is O(N log N), but this could
* be a pretty significant overestimate of the amount of time it takes,
* if there are lots of identical entries. (Especially with string
* comparisons, some comparisons are faster than others.) Better to
* overestimate?
*/
exp_comps_ = log2(visible_rows_.count()) * visible_rows_.count();
progress_frame_ = nullptr;
if (qobject_cast<MainWindow *>(mainApp->mainWindow())) {
MainWindow *mw = qobject_cast<MainWindow *>(mainApp->mainWindow());
progress_frame_ = mw->findChild<ProgressFrame *>();
if (progress_frame_) {
progress_frame_->showProgress(busy_msg, true, false, &stop_flag_, 0);
connect(progress_frame_, &ProgressFrame::stopLoading,
this, &PacketListModel::stopSorting);
}
}
busy_timer_.start();
sort_column_is_numeric_ = isNumericColumn(sort_column_);
QVector<PacketListRecord *> sorted_visible_rows_ = visible_rows_;
try {
std::sort(sorted_visible_rows_.begin(), sorted_visible_rows_.end(), recordLessThan);
beginResetModel();
visible_rows_.resize(0);
number_to_row_.fill(0);
foreach (PacketListRecord *record, sorted_visible_rows_) {
frame_data *fdata = record->frameData();
if (fdata->passed_dfilter || fdata->ref_time) {
visible_rows_ << record;
if (number_to_row_.size() <= (int)fdata->num) {
number_to_row_.resize(fdata->num + 10000);
}
number_to_row_[fdata->num] = static_cast<int>(visible_rows_.count());
}
}
endResetModel();
} catch (const SortAbort& e) {
mainApp->pushStatus(MainApplication::TemporaryStatus, e.what());
}
if (progress_frame_ != nullptr) {
progress_frame_->hide();
disconnect(progress_frame_, &ProgressFrame::stopLoading,
this, &PacketListModel::stopSorting);
}
sort_cap_file_->read_lock = FALSE;
if (cap_file_->current_frame) {
emit goToPacket(cap_file_->current_frame->num);
}
}
void PacketListModel::stopSorting()
{
stop_flag_ = TRUE;
}
bool PacketListModel::isNumericColumn(int column)
{
if (column < 0) {
return false;
}
switch (sort_cap_file_->cinfo.columns[column].col_fmt) {
case COL_8021Q_VLAN_ID: /**< 0) 802.1Q vlan ID */
case COL_CUMULATIVE_BYTES: /**< 5) Cumulative number of bytes */
case COL_DELTA_TIME: /**< 8) Delta time */
case COL_DELTA_TIME_DIS: /**< 9) Delta time displayed*/
case COL_UNRES_DST_PORT: /**< 13) Unresolved dest port */
case COL_FREQ_CHAN: /**< 18) IEEE 802.11 (and WiMax?) - Channel */
case COL_RSSI: /**< 25) IEEE 802.11 - received signal strength */
case COL_TX_RATE: /**< 26) IEEE 802.11 - TX rate in Mbps */
case COL_NUMBER: /**< 35) Packet list item number */
case COL_PACKET_LENGTH: /**< 36) Packet length in bytes */
case COL_UNRES_SRC_PORT: /**< 44) Unresolved source port */
case COL_TEI: /**< 45) Q.921 TEI */
return true;
/*
* Try to sort port numbers as number, if the numeric comparison fails (due
* to name resolution), it will fallback to string comparison.
* */
case COL_RES_DST_PORT: /**< 12) Resolved dest port */
case COL_DEF_DST_PORT: /**< 15) Destination port */
case COL_DEF_SRC_PORT: /**< 40) Source port */
case COL_RES_SRC_PORT: /**< 43) Resolved source port */
return true;
case COL_CUSTOM:
/* handle custom columns below. */
break;
default:
return false;
}
guint num_fields = g_slist_length(sort_cap_file_->cinfo.columns[column].col_custom_fields_ids);
for (guint i = 0; i < num_fields; i++) {
guint *field_idx = (guint *) g_slist_nth_data(sort_cap_file_->cinfo.columns[column].col_custom_fields_ids, i);
header_field_info *hfi = proto_registrar_get_nth(*field_idx);
/*
* Reject a field when there is no numeric field type or when:
* - there are (value_string) "strings"
* (but do accept fields which have a unit suffix).
* - BASE_HEX or BASE_HEX_DEC (these have a constant width, string
* comparison is faster than conversion to double).
* - BASE_CUSTOM (these can be formatted in any way).
*/
if (!hfi ||
(hfi->strings != NULL && !(hfi->display & BASE_UNIT_STRING)) ||
!(((IS_FT_INT(hfi->type) || IS_FT_UINT(hfi->type)) &&
((FIELD_DISPLAY(hfi->display) == BASE_DEC) ||
(FIELD_DISPLAY(hfi->display) == BASE_OCT) ||
(FIELD_DISPLAY(hfi->display) == BASE_DEC_HEX))) ||
(hfi->type == FT_DOUBLE) || (hfi->type == FT_FLOAT) ||
(hfi->type == FT_BOOLEAN) || (hfi->type == FT_FRAMENUM) ||
(hfi->type == FT_RELATIVE_TIME))) {
return false;
}
}
return true;
}
bool PacketListModel::recordLessThan(PacketListRecord *r1, PacketListRecord *r2)
{
int cmp_val = 0;
comps_++;
// Wherein we try to cram the logic of packet_list_compare_records,
// _packet_list_compare_records, and packet_list_compare_custom from
// gtk/packet_list_store.c into one function
if (busy_timer_.elapsed() > busy_timeout_) {
if (progress_frame_) {
progress_frame_->setValue(static_cast<int>(comps_/exp_comps_ * 100));
}
// What's the least amount of processing that we can do which will draw
// the busy indicator?
mainApp->processEvents(QEventLoop::ExcludeSocketNotifiers, 1);
if (stop_flag_) {
throw SortAbort("Sorting aborted");
}
busy_timer_.restart();
}
if (sort_column_ < 0) {
// No column.
cmp_val = frame_data_compare(sort_cap_file_->epan, r1->frameData(), r2->frameData(), COL_NUMBER);
} else if (text_sort_column_ < 0) {
// Column comes directly from frame data
cmp_val = frame_data_compare(sort_cap_file_->epan, r1->frameData(), r2->frameData(), sort_cap_file_->cinfo.columns[sort_column_].col_fmt);
} else {
QString r1String = r1->columnString(sort_cap_file_, sort_column_);
QString r2String = r2->columnString(sort_cap_file_, sort_column_);
// XXX: The naive string comparison compares Unicode code points.
// Proper collation is more expensive
cmp_val = r1String.compare(r2String);
if (cmp_val != 0 && sort_column_is_numeric_) {
// Custom column with numeric data (or something like a port number).
// Attempt to convert to numbers.
// XXX This is slow. Can we avoid doing this? Perhaps the actual
// values used for sorting should be cached too as QVariant[List].
// If so, we could consider using QCollatorSortKeys or similar
// for strings as well.
bool ok_r1, ok_r2;
double num_r1 = parseNumericColumn(r1String, &ok_r1);
double num_r2 = parseNumericColumn(r2String, &ok_r2);
if (!ok_r1 && !ok_r2) {
cmp_val = 0;
} else if (!ok_r1 || (ok_r2 && num_r1 < num_r2)) {
// either r1 is invalid (and sort it before others) or both
// r1 and r2 are valid (sort normally)
cmp_val = -1;
} else if (!ok_r2 || (num_r1 > num_r2)) {
cmp_val = 1;
}
}
if (cmp_val == 0) {
// All else being equal, compare column numbers.
cmp_val = frame_data_compare(sort_cap_file_->epan, r1->frameData(), r2->frameData(), COL_NUMBER);
}
}
if (sort_order_ == Qt::AscendingOrder) {
return cmp_val < 0;
} else {
return cmp_val > 0;
}
}
// Parses a field as a double. Handle values with suffixes ("12ms"), negative
// values ("-1.23") and fields with multiple occurrences ("1,2"). Marks values
// that do not contain any numeric value ("Unknown") as invalid.
double PacketListModel::parseNumericColumn(const QString &val, bool *ok)
{
QByteArray ba = val.toUtf8();
const char *strval = ba.constData();
gchar *end = NULL;
double num = g_ascii_strtod(strval, &end);
*ok = strval != end;
return num;
}
// ::data is const so we have to make changes here.
void PacketListModel::emitItemHeightChanged(const QModelIndex &ih_index)
{
if (!ih_index.isValid()) return;
PacketListRecord *record = static_cast<PacketListRecord*>(ih_index.internalPointer());
if (!record) return;
if (record->lineCount() > max_line_count_) {
max_line_count_ = record->lineCount();
emit itemHeightChanged(ih_index);
}
}
int PacketListModel::rowCount(const QModelIndex &) const
{
return static_cast<int>(visible_rows_.count());
}
int PacketListModel::columnCount(const QModelIndex &) const
{
return prefs.num_cols;
}
QVariant PacketListModel::data(const QModelIndex &d_index, int role) const
{
if (!d_index.isValid())
return QVariant();
PacketListRecord *record = static_cast<PacketListRecord*>(d_index.internalPointer());
if (!record)
return QVariant();
const frame_data *fdata = record->frameData();
if (!fdata)
return QVariant();
switch (role) {
case Qt::TextAlignmentRole:
switch(recent_get_column_xalign(d_index.column())) {
case COLUMN_XALIGN_RIGHT:
return Qt::AlignRight;
break;
case COLUMN_XALIGN_CENTER:
return Qt::AlignCenter;
break;
case COLUMN_XALIGN_LEFT:
return Qt::AlignLeft;
break;
case COLUMN_XALIGN_DEFAULT:
default:
if (right_justify_column(d_index.column(), cap_file_)) {
return Qt::AlignRight;
}
break;
}
return Qt::AlignLeft;
case Qt::BackgroundRole:
const color_t *color;
if (fdata->ignored) {
color = &prefs.gui_ignored_bg;
} else if (fdata->marked) {
color = &prefs.gui_marked_bg;
} else if (fdata->color_filter && recent.packet_list_colorize) {
const color_filter_t *color_filter = (const color_filter_t *) fdata->color_filter;
color = &color_filter->bg_color;
} else {
return QVariant();
}
return ColorUtils::fromColorT(color);
case Qt::ForegroundRole:
if (fdata->ignored) {
color = &prefs.gui_ignored_fg;
} else if (fdata->marked) {
color = &prefs.gui_marked_fg;
} else if (fdata->color_filter && recent.packet_list_colorize) {
const color_filter_t *color_filter = (const color_filter_t *) fdata->color_filter;
color = &color_filter->fg_color;
} else {
return QVariant();
}
return ColorUtils::fromColorT(color);
case Qt::DisplayRole:
{
int column = d_index.column();
QString column_string = record->columnString(cap_file_, column, true);
// We don't know an item's sizeHint until we fetch its text here.
// Assume each line count is 1. If the line count changes, emit
// itemHeightChanged which triggers another redraw (including a
// fetch of SizeHintRole and DisplayRole) in the next event loop.
if (column == 0 && record->lineCountChanged() && record->lineCount() > max_line_count_) {
emit maxLineCountChanged(d_index);
}
return column_string;
}
case Qt::SizeHintRole:
{
// If this is the first row and column, return the maximum row height...
if (d_index.row() < 1 && d_index.column() < 1 && max_row_height_ > 0) {
QSize size = QSize(-1, max_row_height_);
return size;
}
// ...otherwise punt so that the item delegate can correctly calculate the item width.
return QVariant();
}
default:
return QVariant();
}
}
QVariant PacketListModel::headerData(int section, Qt::Orientation orientation,
int role) const
{
if (!cap_file_) return QVariant();
if (orientation == Qt::Horizontal && section < prefs.num_cols) {
switch (role) {
case Qt::DisplayRole:
return QVariant::fromValue(QString(get_column_title(section)));
case Qt::ToolTipRole:
return QVariant::fromValue(gchar_free_to_qstring(get_column_tooltip(section)));
case PacketListModel::HEADER_CAN_RESOLVE:
return (bool)resolve_column(section, cap_file_);
default:
break;
}
}
return QVariant();
}
void PacketListModel::flushVisibleRows()
{
int pos = static_cast<int>(visible_rows_.count());
if (new_visible_rows_.count() > 0) {
beginInsertRows(QModelIndex(), pos, pos + static_cast<int>(new_visible_rows_.count()));
foreach (PacketListRecord *record, new_visible_rows_) {
frame_data *fdata = record->frameData();
visible_rows_ << record;
if (static_cast<unsigned int>(number_to_row_.size()) <= fdata->num) {
number_to_row_.resize(fdata->num + 10000);
}
number_to_row_[fdata->num] = static_cast<int>(visible_rows_.count());
}
endInsertRows();
new_visible_rows_.resize(0);
}
}
// Fill our column string and colorization cache while the application is
// idle. Try to be as conservative with the CPU and disk as possible.
static const int idle_dissection_interval_ = 5; // ms
void PacketListModel::dissectIdle(bool reset)
{
if (reset) {
// qDebug() << "=di reset" << idle_dissection_row_;
idle_dissection_row_ = 0;
} else if (!idle_dissection_timer_->isValid()) {
return;
}
idle_dissection_timer_->restart();
int first = idle_dissection_row_;
while (idle_dissection_timer_->elapsed() < idle_dissection_interval_
&& idle_dissection_row_ < physical_rows_.count()) {
ensureRowColorized(idle_dissection_row_);
idle_dissection_row_++;
// if (idle_dissection_row_ % 1000 == 0) qDebug() << "=di row" << idle_dissection_row_;
}
if (idle_dissection_row_ < physical_rows_.count()) {
QTimer::singleShot(0, this, [=]() { dissectIdle(); });
} else {
idle_dissection_timer_->invalidate();
}
// report colorization progress
emit bgColorizationProgress(first+1, idle_dissection_row_+1);
}
// XXX Pass in cinfo from packet_list_append so that we can fill in
// line counts?
gint PacketListModel::appendPacket(frame_data *fdata)
{
PacketListRecord *record = new PacketListRecord(fdata);
qsizetype pos = -1;
#ifdef DEBUG_PACKET_LIST_MODEL
if (fdata->num % 10000 == 1) {
log_resource_usage(fdata->num == 1, "%u packets", fdata->num);
}
#endif
physical_rows_ << record;
if (fdata->passed_dfilter || fdata->ref_time) {
new_visible_rows_ << record;
if (new_visible_rows_.count() < 2) {
// This is the first queued packet. Schedule an insertion for
// the next UI update.
QTimer::singleShot(0, this, &PacketListModel::flushVisibleRows);
}
pos = static_cast<int>( visible_rows_.count() + new_visible_rows_.count() ) - 1;
}
return static_cast<gint>(pos);
}
frame_data *PacketListModel::getRowFdata(QModelIndex idx)
{
if (!idx.isValid())
return Q_NULLPTR;
return getRowFdata(idx.row());
}
frame_data *PacketListModel::getRowFdata(int row) {
if (row < 0 || row >= visible_rows_.count())
return NULL;
PacketListRecord *record = visible_rows_[row];
if (!record)
return NULL;
return record->frameData();
}
void PacketListModel::ensureRowColorized(int row)
{
if (row < 0 || row >= visible_rows_.count())
return;
PacketListRecord *record = visible_rows_[row];
if (!record)
return;
if (!record->colorized()) {
record->ensureColorized(cap_file_);
}
}
int PacketListModel::visibleIndexOf(frame_data *fdata) const
{
int row = 0;
foreach (PacketListRecord *record, visible_rows_) {
if (record->frameData() == fdata) {
return row;
}
row++;
}
return -1;
}
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