qt5base-lts/tests/auto/dbus/qdbusinterface/qmyserver/qmyserver.cpp
Thiago Macieira aa83bacb14 Autotest: fix a race condition in verifying a peer D-Bus connected
On the unit test side, everything is sequential: we first ask for the
connection, verify that it is connected, then ask the remote side via
the session bus if it is connected. Unfortunately, the remote site may
handle things in a different order: it may handle the incoming function
call to "isConnected" before doing accept(2) on the listening socket.

So, instead, make the local side block until the connection is received
on the other side. On the remote, we don't block, instead we use the
feature of delayed replies.

Change-Id: Ie386938b8b39dd94a9d7e5913668125fb4a3c7da
Reviewed-by: Alex Blasche <alexander.blasche@theqtcompany.com>
2015-01-06 17:36:58 +01:00

167 lines
4.6 KiB
C++

/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/QtCore>
#include <QtDBus/QtDBus>
#include "../myobject.h"
static const char serviceName[] = "org.qtproject.autotests.qmyserver";
static const char objectPath[] = "/org/qtproject/qmyserver";
//static const char *interfaceName = serviceName;
int MyObject::callCount = 0;
QVariantList MyObject::callArgs;
class MyServer : public QDBusServer, protected QDBusContext
{
Q_OBJECT
Q_CLASSINFO("D-Bus Interface", "org.qtproject.autotests.qmyserver")
public:
MyServer(QObject* parent = 0)
: QDBusServer(parent),
m_conn("none")
{
connect(this, SIGNAL(newConnection(QDBusConnection)), SLOT(handleConnection(QDBusConnection)));
}
public slots:
QString address() const
{
if (!QDBusServer::isConnected())
sendErrorReply(QDBusServer::lastError().name(), QDBusServer::lastError().message());
return QDBusServer::address();
}
void waitForConnected()
{
if (callPendingReply.type() != QDBusMessage::InvalidMessage) {
sendErrorReply(QDBusError::NotSupported, "One call already pending!");
return;
}
if (m_conn.isConnected())
return;
// not connected, we'll reply later
setDelayedReply(true);
callPendingReply = message();
}
void emitSignal(const QString &interface, const QString &name, const QString &arg)
{
QDBusMessage msg = QDBusMessage::createSignal("/", interface, name);
msg << arg;
m_conn.send(msg);
}
void reset()
{
MyObject::callCount = 0;
obj.m_complexProp.clear();
}
int callCount()
{
return MyObject::callCount;
}
QVariantList callArgs()
{
return MyObject::callArgs;
}
void setProp1(int val)
{
obj.m_prop1 = val;
}
int prop1()
{
return obj.m_prop1;
}
void setComplexProp(QList<int> val)
{
obj.m_complexProp = val;
}
QList<int> complexProp()
{
return obj.m_complexProp;
}
void quit()
{
qApp->quit();
}
private slots:
void handleConnection(const QDBusConnection& con)
{
m_conn = con;
m_conn.registerObject("/", &obj, QDBusConnection::ExportAllProperties
| QDBusConnection::ExportAllSlots
| QDBusConnection::ExportAllInvokables);
if (callPendingReply.type() != QDBusMessage::InvalidMessage) {
QDBusConnection::sessionBus().send(callPendingReply.createReply());
callPendingReply = QDBusMessage();
}
}
private:
QDBusConnection m_conn;
QDBusMessage callPendingReply;
MyObject obj;
};
int main(int argc, char *argv[])
{
QCoreApplication app(argc, argv);
QDBusConnection con = QDBusConnection::sessionBus();
if (!con.isConnected())
exit(1);
if (!con.registerService(serviceName))
exit(2);
MyServer server;
con.registerObject(objectPath, &server, QDBusConnection::ExportAllSlots);
printf("ready.\n");
fflush(stdout);
return app.exec();
}
#include "qmyserver.moc"