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/* filter_list_model.cpp
* Model for all filter types
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <glib.h>
#include <wsutil/filesystem.h>
#include <ui/qt/utils/qt_ui_utils.h>
#include <ui/qt/utils/wireshark_mime_data.h>
#include <ui/qt/models/filter_list_model.h>
#include <ui/qt/models/profile_model.h>
#include <QFile>
#include <QTextStream>
#include <QRegularExpression>
#include <QDir>
#include <QMimeData>
/*
* Old filter file name.
*/
#define FILTER_FILE_NAME "filters"
/*
* Capture filter file name.
*/
#define CFILTER_FILE_NAME "cfilters"
/*
* Display filter file name.
*/
#define DFILTER_FILE_NAME "dfilters"
FilterListModel::FilterListModel(QObject * parent) :
QAbstractListModel(parent),
type_(FilterListModel::Display)
{
reload();
}
FilterListModel::FilterListModel(FilterListModel::FilterListType type, QObject * parent) :
QAbstractListModel(parent),
type_(type)
{
reload();
}
void FilterListModel::reload()
{
storage.clear();
const char * cfile = (type_ == FilterListModel::Capture) ? CFILTER_FILE_NAME : DFILTER_FILE_NAME;
/* Try personal config file first */
QString fileName = gchar_free_to_qstring(get_persconffile_path(cfile, TRUE));
if (fileName.length() <= 0 || ! QFileInfo::exists(fileName))
fileName = gchar_free_to_qstring(get_persconffile_path(FILTER_FILE_NAME, TRUE));
if (fileName.length() <= 0 || ! QFileInfo::exists(fileName))
fileName = gchar_free_to_qstring(get_datafile_path(cfile));
if (fileName.length() <= 0 || ! QFileInfo::exists(fileName))
return;
QFile file(fileName);
/* Still can use the model, just have to start from an empty set */
if (! file.open(QIODevice::ReadOnly | QIODevice::Text))
return;
QTextStream in(&file);
QRegularExpression rx("\\s*\\\"\\s*(.*?)\\s*\\\"\\s(.*)");
while (!in.atEnd())
{
QString data = in.readLine().trimmed();
/* Filter out lines that do not contain content:
* - Starting with # is a comment
* - Does not start with a quoted string
*/
if (data.startsWith("#") || ! data.trimmed().startsWith("\""))
continue;
QStringList content = data.split(QChar('\n'));
foreach (QString line, content)
{
QRegularExpressionMatch match = rx.match(line);
if (match.hasMatch()) {
addFilter(match.captured(1).trimmed(), match.captured(2).trimmed());
}
}
}
}
void FilterListModel::setFilterType(FilterListModel::FilterListType type)
{
type_ = type;
reload();
}
FilterListModel::FilterListType FilterListModel::filterType() const
{
return type_;
}
int FilterListModel::rowCount(const QModelIndex &/* parent */) const
{
return static_cast<int>(storage.count());
}
int FilterListModel::columnCount(const QModelIndex &/* parent */) const
{
return 2;
}
QVariant FilterListModel::headerData(int section, Qt::Orientation orientation, int role) const
{
if (section >= columnCount() || section < 0 || orientation != Qt::Horizontal)
return QVariant();
if (role == Qt::DisplayRole)
{
switch (section) {
case ColumnName:
return tr("Filter Name");
break;
case ColumnExpression:
return tr("Filter Expression");
break;
}
}
return QVariant();
}
QVariant FilterListModel::data(const QModelIndex &index, int role) const
{
if (! index.isValid() || index.row() >= rowCount())
return QVariant();
QStringList row = storage.at(index.row()).split("\n");
if (role == Qt::DisplayRole)
return row.at(index.column());
return QVariant();
}
bool FilterListModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
if (! index.isValid() || index.row() >= rowCount() || role != Qt::EditRole)
return false;
QStringList row = storage.at(index.row()).split("\n");
if (row.count() <= index.column())
return false;
if (index.column() == FilterListModel::ColumnName && value.toString().contains("\""))
return false;
row[index.column()] = value.toString();
storage[index.row()] = row.join("\n");
return true;
}
Qt::ItemFlags FilterListModel::flags(const QModelIndex &index) const
{
Qt::ItemFlags fl = QAbstractListModel::flags(index);
fl |= Qt::ItemIsDropEnabled;
if (! index.isValid() || index.row() >= rowCount())
return fl;
fl |= Qt::ItemIsEditable | Qt::ItemIsDragEnabled;
return fl;
}
QModelIndex FilterListModel::addFilter(QString name, QString expression)
{
if (name.length() == 0 || expression.length() == 0)
return QModelIndex();
beginInsertRows(QModelIndex(), rowCount(), rowCount());
storage << QString("%1\n%2").arg(name).arg(expression);
endInsertRows();
return index(rowCount() - 1, 0);
}
QModelIndex FilterListModel::findByName(QString name)
{
if (name.length() == 0)
return QModelIndex();
for (int cnt = 0; cnt < rowCount(); cnt++)
{
if (storage.at(cnt).startsWith(QString("%1\n").arg(name)))
return index(cnt, 0);
}
return QModelIndex();
}
QModelIndex FilterListModel::findByExpression(QString expression)
{
if (expression.length() == 0)
return QModelIndex();
for (int cnt = 0; cnt < rowCount(); cnt++)
{
if (storage.at(cnt).endsWith(QString("\n%1").arg(expression)))
return index(cnt, 0);
}
return QModelIndex();
}
void FilterListModel::removeFilter(QModelIndex idx)
{
if (! idx.isValid() || idx.row() >= rowCount())
return;
beginRemoveRows(QModelIndex(), idx.row(), idx.row());
storage.removeAt(idx.row());
endRemoveRows();
}
void FilterListModel::saveList()
{
QString filename = (type_ == FilterListModel::Capture) ? CFILTER_FILE_NAME : DFILTER_FILE_NAME;
filename = QString("%1%2%3").arg(ProfileModel::activeProfilePath()).arg("/").arg(filename);
QFile file(filename);
if (! file.open(QIODevice::WriteOnly | QIODevice::Text))
return;
QTextStream out(&file);
for (int row = 0; row < rowCount(); row++)
{
QString line = QString("\"%1\"").arg(index(row, ColumnName).data().toString().trimmed());
line.append(QString(" %1").arg(index(row, ColumnExpression).data().toString()));
#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
out << line << Qt::endl;
#else
out << line << endl;
#endif
}
file.close();
}
Qt::DropActions FilterListModel::supportedDropActions() const
{
return Qt::MoveAction;
}
QStringList FilterListModel::mimeTypes() const
{
return QStringList() << WiresharkMimeData::FilterListMimeType;
}
QMimeData *FilterListModel::mimeData(const QModelIndexList &indexes) const
{
QMimeData *mimeData = new QMimeData();
QStringList rows;
foreach (const QModelIndex &index, indexes)
{
if (! rows.contains(QString::number(index.row())))
rows << QString::number(index.row());
}
mimeData->setData(WiresharkMimeData::FilterListMimeType, rows.join(",").toUtf8());
return mimeData;
}
bool FilterListModel::dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int /* column */, const QModelIndex & parent)
{
if (action != Qt::MoveAction)
return true;
if (! data->hasFormat(WiresharkMimeData::FilterListMimeType))
return true;
QStringList rows = QString(data->data(WiresharkMimeData::FilterListMimeType)).split(",");
int insertRow = parent.isValid() ? parent.row() : row;
/* for now, only single rows can be selected */
if (rows.count() > 0)
{
bool ok = false;
int strow = rows[0].toInt(&ok);
if (ok)
{
int storeTo = insertRow;
if (storeTo < 0 || storeTo >= storage.count())
{
storeTo = static_cast<int>(storage.count()) - 1;
}
beginResetModel();
storage.move(strow, storeTo);
endResetModel();
}
}
return true;
}
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