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/* ============================================================
*
* This file is a part of the rekonq project
*
* Copyright (C) 2010 by Benjamin Poulain <ikipou 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 "adblockrulefallbackimpl.h"
// Rekonq Includes
#include "rekonq_defines.h"
// Qt Includes
#include <QWebFrame>
#include <QNetworkReply>
#include <QStringList>
static inline bool isRegExpFilter(const QString &filter)
{
return filter.startsWith(QL1C('/')) && filter.endsWith(QL1C('/'));
}
AdBlockRuleFallbackImpl::AdBlockRuleFallbackImpl(const QString &filter)
: AdBlockRuleImpl(filter)
{
m_regExp.setCaseSensitivity(Qt::CaseInsensitive);
m_regExp.setPatternSyntax(QRegExp::RegExp2);
QString parsedLine = filter;
const int optionsNumber = parsedLine.lastIndexOf(QL1C('$'));
if (optionsNumber >= 0 && !isRegExpFilter(parsedLine)) {
const QStringList options(parsedLine.mid(optionsNumber + 1).split(QL1C(',')));
parsedLine = parsedLine.left(optionsNumber);
if (options.contains(QL1S("match-case")))
m_regExp.setCaseSensitivity(Qt::CaseSensitive);
foreach (const QString &option, options) {
// Domain restricted filter
const QString domainKeyword(QL1S("domain="));
if (option.startsWith(domainKeyword)) {
QStringList domainList = option.mid(domainKeyword.length()).split(QL1C('|'));
foreach (const QString &domain, domainList) {
if (domain.startsWith(QL1C('~')))
m_whiteDomains.insert(domain.toLower());
else
m_blackDomains.insert(domain.toLower());
}
}
}
}
if (isRegExpFilter(parsedLine))
parsedLine = parsedLine.mid(1, parsedLine.length() - 2);
else
parsedLine = convertPatternToRegExp(parsedLine);
m_regExp.setPattern(parsedLine);
}
bool AdBlockRuleFallbackImpl::match(const QNetworkRequest &request, const QString &encodedUrl, const QString &) const
{
const bool regexpMatch = m_regExp.indexIn(encodedUrl) != -1;
if (regexpMatch && (!m_whiteDomains.isEmpty() || !m_blackDomains.isEmpty())) {
Q_ASSERT(qobject_cast<QWebFrame*>(request.originatingObject()));
const QWebFrame *const origin = static_cast<QWebFrame *const>(request.originatingObject());
const QString originDomain = origin->url().host();
if (!m_whiteDomains.isEmpty()) {
// In this context, white domains means we block anything but what is in the list.
if (m_whiteDomains.contains(originDomain))
return false;
return true;
} else if (m_blackDomains.contains(originDomain)) {
return true;
}
return false;
}
return regexpMatch;
}
QString AdBlockRuleFallbackImpl::convertPatternToRegExp(const QString &wildcardPattern)
{
QString pattern = wildcardPattern;
// remove multiple wildcards
pattern.replace(QRegExp(QL1S("\\*+")), QL1S("*"));
// remove anchors following separator placeholder
pattern.replace(QRegExp(QL1S("\\^\\|$")), QL1S("^"));
// remove leading wildcards
pattern.replace(QRegExp(QL1S("^(\\*)")), QL1S(""));
// remove trailing wildcards
pattern.replace(QRegExp(QL1S("(\\*)$")), QL1S(""));
// escape special symbols
pattern.replace(QRegExp(QL1S("(\\W)")), QL1S("\\\\1"));
// process extended anchor at expression start
pattern.replace(QRegExp(QL1S("^\\\\\\|\\\\\\|")), QL1S("^[\\w\\-]+:\\/+(?!\\/)(?:[^\\/]+\\.)?"));
// process separator placeholders
pattern.replace(QRegExp(QL1S("\\\\\\^")), QL1S("(?:[^\\w\\d\\-.%]|$)"));
// process anchor at expression start
pattern.replace(QRegExp(QL1S("^\\\\\\|")), QL1S("^"));
// process anchor at expression end
pattern.replace(QRegExp(QL1S("\\\\\\|$")), QL1S("$"));
// replace wildcards by .*
pattern.replace(QRegExp(QL1S("\\\\\\*")), QL1S(".*"));
// Finally, return...
return pattern;
}
QString AdBlockRuleFallbackImpl::ruleString() const
{
return m_regExp.pattern();
}
QString AdBlockRuleFallbackImpl::ruleType() const
{
return QL1S("AdBlockRuleFallbackImpl");
}
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