/**************************************************************************** | |
** | |
** 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. | |
** | |
** $QT_BEGIN_LICENSE:LGPL$ | |
** GNU Lesser General Public License Usage | |
** 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. | |
** | |
** 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. | |
** | |
** Other Usage | |
** Alternatively, this file may be used in accordance with the terms and | |
** conditions contained in a signed written agreement between you and Nokia. | |
** | |
** | |
** | |
** | |
** | |
** $QT_END_LICENSE$ | |
** | |
****************************************************************************/ | |
//#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 | |