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/* ============================================================
*
* This file is a part of the rekonq project
*
* Copyright (C) 2007-2008 Trolltech ASA. All rights reserved
* Copyright (C) 2008-2012 by Andrea Diamantini <adjam7 at gmail dot com>
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License or (at your option) version 3 or any later version
* accepted by the membership of KDE e.V. (or its successor approved
* by the membership of KDE e.V.), which shall act as a proxy
* defined in Section 14 of version 3 of the license.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* ============================================================ */
// Self Includes
#include "networkaccessmanager.h"
#include "networkaccessmanager.moc"
// Local Includes
#include "adblockmanager.h"
// KDE Includes
#include <KLocale>
#include <KProtocolManager>
#include <KRun>
// Qt Includes
#include <QNetworkReply>
#include <QTimer>
#include <QWebElement>
#include <QWebFrame>
#include <QWidget>
class NullNetworkReply : public QNetworkReply
{
public:
NullNetworkReply(const QNetworkRequest &req, QObject* parent = 0)
: QNetworkReply(parent)
{
setRequest(req);
setUrl(req.url());
setHeader(QNetworkRequest::ContentLengthHeader, 0);
setHeader(QNetworkRequest::ContentTypeHeader, "text/plain");
setError(QNetworkReply::ContentAccessDenied, i18n("Blocked by ad filter"));
setAttribute(QNetworkRequest::User, QNetworkReply::ContentAccessDenied);
QTimer::singleShot(0, this, SIGNAL(finished()));
}
virtual void abort() {}
virtual qint64 bytesAvailable() const
{
return 0;
}
protected:
virtual qint64 readData(char*, qint64)
{
return -1;
}
};
// ----------------------------------------------------------------------------------------------
#define HIDABLE_ELEMENTS QL1S("audio,img,embed,object,iframe,frame,video")
static void hideBlockedElements(const QUrl& url, QWebElementCollection& collection)
{
for (QWebElementCollection::iterator it = collection.begin(); it != collection.end(); ++it)
{
const QUrl baseUrl((*it).webFrame()->baseUrl());
QString src = (*it).attribute(QL1S("src"));
if (src.isEmpty())
src = (*it).evaluateJavaScript(QL1S("this.src")).toString();
if (src.isEmpty())
continue;
const QUrl resolvedUrl(baseUrl.resolved(src));
if (url == resolvedUrl)
{
//kDebug() << "*** HIDING ELEMENT: " << (*it).tagName() << resolvedUrl;
(*it).removeFromDocument();
}
}
}
// ----------------------------------------------------------------------------------------------
NetworkAccessManager::NetworkAccessManager(QObject *parent)
: AccessManager(parent)
{
QString c = KGlobal::locale()->language();
if (c == QL1S("C"))
c = QL1S("en-US");
else
c = c.replace(QL1C('_') , QL1C('-'));
c.append(QL1S(", en-US; q=0.8, en; q=0.6"));
_acceptLanguage = c.toLatin1();
}
QNetworkReply *NetworkAccessManager::createRequest(Operation op, const QNetworkRequest &req, QIODevice *outgoingData)
{
bool blocked = false;
// Handle GET operations with AdBlock
if (op == QNetworkAccessManager::GetOperation)
blocked = AdBlockManager::self()->blockRequest(req);
if (!blocked)
{
if (KProtocolInfo::isHelperProtocol(req.url()))
{
(void) new KRun(req.url(), qobject_cast<QWidget*>(req.originatingObject()));
return new NullNetworkReply(req, this);
}
// set our "nice" accept-language header...
QNetworkRequest request = req;
request.setRawHeader("Accept-Language", _acceptLanguage);
return KIO::AccessManager::createRequest(op, request, outgoingData);
}
QWebFrame* frame = qobject_cast<QWebFrame*>(req.originatingObject());
if (frame)
{
if (!m_blockedRequests.contains(frame))
connect(frame, SIGNAL(loadFinished(bool)), this, SLOT(slotFinished(bool)));
m_blockedRequests.insert(frame, req.url());
}
return new NullNetworkReply(req, this);
}
void NetworkAccessManager::slotFinished(bool ok)
{
if (!ok)
return;
if (!AdBlockManager::self()->isEnabled())
return;
if (!AdBlockManager::self()->isHidingElements())
return;
QWebFrame* frame = qobject_cast<QWebFrame*>(sender());
if (!frame)
return;
QList<QUrl> urls = m_blockedRequests.values(frame);
if (urls.isEmpty())
return;
QWebElementCollection collection = frame->findAllElements(HIDABLE_ELEMENTS);
if (frame->parentFrame())
collection += frame->parentFrame()->findAllElements(HIDABLE_ELEMENTS);
Q_FOREACH(const QUrl & url, urls)
hideBlockedElements(url, collection);
}
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