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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtNetwork module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//#define QNETWORKACCESSCACHEBACKEND_DEBUG
#include "qnetworkaccesscachebackend_p.h"
#include "qabstractnetworkcache.h"
#include "qfileinfo.h"
#include "qurlinfo.h"
#include "qdir.h"
#include "qcoreapplication.h"
QT_BEGIN_NAMESPACE
QNetworkAccessCacheBackend::QNetworkAccessCacheBackend()
: QNetworkAccessBackend()
, device(0)
{
}
QNetworkAccessCacheBackend::~QNetworkAccessCacheBackend()
{
}
void QNetworkAccessCacheBackend::open()
{
if (operation() != QNetworkAccessManager::GetOperation || !sendCacheContents()) {
QString msg = QCoreApplication::translate("QNetworkAccessCacheBackend", "Error opening %1")
.arg(this->url().toString());
error(QNetworkReply::ContentNotFoundError, msg);
setAttribute(QNetworkRequest::SourceIsFromCacheAttribute, true);
}
finished();
}
bool QNetworkAccessCacheBackend::sendCacheContents()
{
setCachingEnabled(false);
QAbstractNetworkCache *nc = networkCache();
if (!nc)
return false;
QNetworkCacheMetaData item = nc->metaData(url());
if (!item.isValid())
return false;
QNetworkCacheMetaData::AttributesMap attributes = item.attributes();
setAttribute(QNetworkRequest::HttpStatusCodeAttribute, attributes.value(QNetworkRequest::HttpStatusCodeAttribute));
setAttribute(QNetworkRequest::HttpReasonPhraseAttribute, attributes.value(QNetworkRequest::HttpReasonPhraseAttribute));
setAttribute(QNetworkRequest::SourceIsFromCacheAttribute, true);
// set the raw headers
QNetworkCacheMetaData::RawHeaderList rawHeaders = item.rawHeaders();
QNetworkCacheMetaData::RawHeaderList::ConstIterator it = rawHeaders.constBegin(),
end = rawHeaders.constEnd();
for ( ; it != end; ++it)
setRawHeader(it->first, it->second);
// handle a possible redirect
QVariant redirectionTarget = attributes.value(QNetworkRequest::RedirectionTargetAttribute);
if (redirectionTarget.isValid()) {
setAttribute(QNetworkRequest::RedirectionTargetAttribute, redirectionTarget);
redirectionRequested(redirectionTarget.toUrl());
}
// signal we're open
metaDataChanged();
if (operation() == QNetworkAccessManager::GetOperation) {
QIODevice *contents = nc->data(url());
if (!contents)
return false;
contents->setParent(this);
writeDownstreamData(contents);
}
#if defined(QNETWORKACCESSCACHEBACKEND_DEBUG)
qDebug() << "Successfully sent cache:" << url();
#endif
return true;
}
void QNetworkAccessCacheBackend::closeDownstreamChannel()
{
if (operation() == QNetworkAccessManager::GetOperation) {
device->close();
delete device;
device = 0;
}
}
void QNetworkAccessCacheBackend::closeUpstreamChannel()
{
Q_ASSERT_X(false, Q_FUNC_INFO, "This function show not have been called!");
}
void QNetworkAccessCacheBackend::upstreamReadyRead()
{
Q_ASSERT_X(false, Q_FUNC_INFO, "This function show not have been called!");
}
void QNetworkAccessCacheBackend::downstreamReadyWrite()
{
Q_ASSERT_X(false, Q_FUNC_INFO, "This function show not have been called!");
}
QT_END_NAMESPACE
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