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Diffstat (limited to 'src/network/access/qnetworkaccesscachebackend.cpp')
-rw-r--r-- | src/network/access/qnetworkaccesscachebackend.cpp | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/src/network/access/qnetworkaccesscachebackend.cpp b/src/network/access/qnetworkaccesscachebackend.cpp new file mode 100644 index 0000000000..13f4cd9cbb --- /dev/null +++ b/src/network/access/qnetworkaccesscachebackend.cpp @@ -0,0 +1,146 @@ +/**************************************************************************** +** +** 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 + |