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/* wireshark_dialog.cpp
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <glib.h>
#include "cfile.h"
#include <epan/packet.h>
#include <epan/tap.h>
#include "main_application.h"
#include "wireshark_dialog.h"
#include <ui/qt/utils/qt_ui_utils.h>
#include "ui/recent.h"
#include "ui/ws_ui_util.h"
#include <QMessageBox>
// To do:
// - Use a dynamic property + Q_PROPERTY for the subtitle.
// - Make our nested event loop more robust. See tryDeleteLater for details.
WiresharkDialog::WiresharkDialog(QWidget &parent, CaptureFile &capture_file) :
GeometryStateDialog(&parent, Qt::Window),
cap_file_(capture_file),
file_closed_(false),
retap_depth_(0),
dialog_closed_(false)
{
setWindowIcon(mainApp->normalIcon());
setWindowSubtitle(QString());
connect(&cap_file_, &CaptureFile::captureEvent, this, &WiresharkDialog::captureEvent);
}
void WiresharkDialog::accept()
{
QDialog::accept();
dialogCleanup(true);
}
// XXX Should we do this in WiresharkDialog?
void WiresharkDialog::reject()
{
QDialog::reject();
dialogCleanup(true);
}
void WiresharkDialog::setWindowSubtitle(const QString &subtitle)
{
subtitle_ = subtitle;
QString title = mainApp->windowTitleString(QStringList() << subtitle_ << cap_file_.fileTitle());
QDialog::setWindowTitle(title);
}
// See if we can destroy ourselves. The user may have clicked "Close" while
// we were deep in the bowels of a routine that retaps packets. Track our
// tapping state using retap_depth_ and our closed state using dialog_closed_.
//
// The Delta Object Rules page on nested event loops:
//
// https://jblog.andbit.net/2007/04/28/delta-object-rules/
//
// effectively says "don't do that." However, we don't really have a choice
// if we want to have a usable application that retaps packets.
void WiresharkDialog::dialogCleanup(bool closeDialog)
{
if (closeDialog)
{
// Cancel any taps in progress?
// cap_file_.setCaptureStopFlag();
removeTapListeners();
dialog_closed_ = true;
}
if (retap_depth_ < 1 && dialog_closed_) {
disconnect();
deleteLater();
}
}
void WiresharkDialog::updateWidgets()
{
setWindowSubtitle(subtitle_);
}
bool WiresharkDialog::registerTapListener(const char *tap_name, void *tap_data, const char *filter, guint flags, tap_reset_cb tap_reset, tap_packet_cb tap_packet, tap_draw_cb tap_draw)
{
GString *error_string = register_tap_listener(tap_name, tap_data, filter, flags,
tap_reset, tap_packet, tap_draw, NULL);
if (error_string) {
QMessageBox::warning(this, tr("Failed to attach to tap \"%1\"").arg(tap_name),
error_string->str);
g_string_free(error_string, TRUE);
return false;
}
tap_listeners_ << tap_data;
return true;
}
void WiresharkDialog::captureEvent(CaptureEvent e)
{
switch (e.captureContext())
{
case CaptureEvent::Retap:
switch (e.eventType())
{
case CaptureEvent::Started:
beginRetapPackets();
break;
case CaptureEvent::Finished:
endRetapPackets();
break;
default:
break;
}
break;
case CaptureEvent::File:
switch (e.eventType())
{
case CaptureEvent::Closing:
captureFileClosing();
break;
case CaptureEvent::Closed:
file_closed_ = true;
captureFileClosed();
break;
default:
break;
}
break;
default:
break;
}
}
void WiresharkDialog::beginRetapPackets()
{
retap_depth_++;
}
void WiresharkDialog::endRetapPackets()
{
retap_depth_--;
dialogCleanup();
}
void WiresharkDialog::removeTapListeners()
{
while (!tap_listeners_.isEmpty()) {
remove_tap_listener(tap_listeners_.takeFirst());
}
}
void WiresharkDialog::captureFileClosing()
{
removeTapListeners();
updateWidgets();
}
void WiresharkDialog::captureFileClosed()
{
updateWidgets();
}
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