Fix invalid Date header field in handshake response

Fix invalid Date header in handshake response on systems with non-
english system locale.

Task-number: QTBUG-40866
Change-Id: If6d5cc55e879eff259698e87c9cda753990245e7
Reviewed-by: Kurt Pattyn <pattyn.kurt@gmail.com>

src/websockets/qwebsockethandshakeresponse.cpp

@@ -49,6 +49,7 @@
 #include <QtCore/QByteArray>
 #include <QtCore/QStringList>
 #include <QtCore/QDateTime>
+#include <QtCore/QLocale>
 #include <QtCore/QCryptographicHash>
 #include <QtCore/QSet>
 #include <QtCore/QList>
@@ -186,14 +187,15 @@ QString QWebSocketHandshakeResponse::getHandshakeResponse(
                 } else {
                     if (origin.isEmpty())
                         origin = QStringLiteral("*");
+                    QDateTime datetime = QDateTime::currentDateTimeUtc();
                     response << QStringLiteral("Server: ") % serverName                      <<
                                 QStringLiteral("Access-Control-Allow-Credentials: false")    <<
                                 QStringLiteral("Access-Control-Allow-Methods: GET")          <<
                                 QStringLiteral("Access-Control-Allow-Headers: content-type") <<
                                 QStringLiteral("Access-Control-Allow-Origin: ") % origin     <<
-                                QStringLiteral("Date: ") %
-                                    QDateTime::currentDateTimeUtc()
-                                        .toString(QStringLiteral("ddd, dd MMM yyyy hh:mm:ss 'GMT'"));
+                                QStringLiteral("Date: ") % QLocale::c()
+                                    .toString(datetime, QStringLiteral("ddd, dd MMM yyyy hh:mm:ss 'GMT'"));
+
 
                     m_acceptedVersion = QWebSocketProtocol::currentVersion();
                     m_canUpgrade = true;

tests/auto/auto.pro

@@ -8,6 +8,7 @@ contains(QT_CONFIG, private_tests): SUBDIRS += \
    dataprocessor \
    websocketframe \
    handshakerequest \
+   handshakeresponse \
    qdefaultmaskgenerator
 
 SUBDIRS += \

tests/auto/handshakeresponse/handshakeresponse.pro

+CONFIG += console
+CONFIG += testcase
+CONFIG -= app_bundle
+
+TEMPLATE = app
+
+TARGET = tst_handshakeresponse
+
+QT = core testlib websockets websockets-private
+
+SOURCES += tst_handshakeresponse.cpp
+
+requires(contains(QT_CONFIG, private_tests))
+DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0

tests/auto/handshakeresponse/tst_handshakeresponse.cpp

+/****************************************************************************
+**
+** Copyright (C) 2014 Kurt Pattyn <pattyn.kurt@gmail.com>.
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: 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.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include <QtTest/QtTest>
+#include <QtTest/qtestcase.h>
+#include <QtCore/QDebug>
+#include <QtCore/QByteArray>
+#include <QtCore/QtEndian>
+
+#include "private/qwebsockethandshakerequest_p.h"
+#include "private/qwebsockethandshakeresponse_p.h"
+#include "private/qwebsocketprotocol_p.h"
+#include "QtWebSockets/qwebsocketprotocol.h"
+
+QT_USE_NAMESPACE
+
+Q_DECLARE_METATYPE(QWebSocketProtocol::CloseCode)
+Q_DECLARE_METATYPE(QWebSocketProtocol::OpCode)
+
+class tst_HandshakeResponse : public QObject
+{
+    Q_OBJECT
+
+public:
+    tst_HandshakeResponse();
+
+private Q_SLOTS:
+    void initTestCase();
+    void cleanupTestCase();
+    void init();
+    void cleanup();
+
+    void tst_date_response();
+};
+
+tst_HandshakeResponse::tst_HandshakeResponse()
+{}
+
+void tst_HandshakeResponse::initTestCase()
+{
+}
+
+void tst_HandshakeResponse::cleanupTestCase()
+{}
+
+void tst_HandshakeResponse::init()
+{
+    qRegisterMetaType<QWebSocketProtocol::OpCode>("QWebSocketProtocol::OpCode");
+    qRegisterMetaType<QWebSocketProtocol::CloseCode>("QWebSocketProtocol::CloseCode");
+}
+
+void tst_HandshakeResponse::cleanup()
+{
+}
+
+void tst_HandshakeResponse::tst_date_response()
+{
+    QWebSocketHandshakeRequest request(80, false);
+    QString buffer;
+    QTextStream input(&buffer);
+    input << QStringLiteral("GET / HTTP/1.1\r\nHost: example.com\r\nSec-WebSocket-Version: 13\r\n") +
+             QStringLiteral("Sec-WebSocket-Key: AVDFBDDFF\r\n") +
+             QStringLiteral("Upgrade: websocket\r\n") +
+             QStringLiteral("Connection: Upgrade\r\n\r\n");
+    request.readHandshake(input);
+
+    QWebSocketHandshakeResponse response(request, "example.com", true,
+                                         QList<QWebSocketProtocol::Version>() << QWebSocketProtocol::Version13,
+                                         QList<QString>(),
+                                         QList<QString>());
+    QString data;
+    QTextStream output(&data);
+    output << response;
+
+    QStringList list = data.split("\r\n");
+    int index = list.indexOf(QRegExp("Date:.*"));
+    QVERIFY(index > -1);
+    QVERIFY(QLocale::c().toDateTime(list[index], "'Date:' ddd, dd MMM yyyy hh:mm:ss 'GMT'").isValid());
+}
+
+QTEST_MAIN(tst_HandshakeResponse)
+
+#include "tst_handshakeresponse.moc"