2011-03-27 21:59:40 +02:00
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/* ============================================================
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* QupZilla - WebKit based browser
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2011-12-15 18:34:48 +01:00
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* Copyright (C) 2010-2011 David Rosca <nowrep@gmail.com>
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2011-03-27 21:59:40 +02:00
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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* ============================================================ */
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/**
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* Copyright (c) 2009, Zsombor Gegesy <gzsombor@gmail.com>
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* Copyright (c) 2009, Benjamin C. Meyer <ben@meyerhome.net>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Benjamin Meyer nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "adblockrule.h"
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#include "adblocksubscription.h"
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#include <qdebug.h>
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#include <qregexp.h>
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#include <qurl.h>
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// #define ADBLOCKRULE_DEBUG
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AdBlockRule::AdBlockRule(const QString &filter)
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{
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setFilter(filter);
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}
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QString AdBlockRule::filter() const
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{
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return m_filter;
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}
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void AdBlockRule::setFilter(const QString &filter)
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{
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m_filter = filter;
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m_cssRule = false;
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m_enabled = true;
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m_exception = false;
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bool regExpRule = false;
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if (filter.startsWith(QLatin1String("!"))
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2011-11-06 17:01:23 +01:00
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|| filter.trimmed().isEmpty()) {
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m_enabled = false;
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}
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2011-11-06 17:01:23 +01:00
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if (filter.contains(QLatin1String("##"))) {
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m_cssRule = true;
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}
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QString parsedLine = filter;
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if (parsedLine.startsWith(QLatin1String("@@"))) {
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m_exception = true;
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parsedLine = parsedLine.mid(2);
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}
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if (parsedLine.startsWith(QLatin1Char('/'))) {
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if (parsedLine.endsWith(QLatin1Char('/'))) {
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parsedLine = parsedLine.mid(1);
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parsedLine = parsedLine.left(parsedLine.size() - 1);
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regExpRule = true;
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}
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}
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int options = parsedLine.indexOf(QLatin1String("$"), 0);
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if (options >= 0) {
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m_options = parsedLine.mid(options + 1).split(QLatin1Char(','));
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parsedLine = parsedLine.left(options);
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}
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setPattern(parsedLine, regExpRule);
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if (m_options.contains(QLatin1String("match-case"))) {
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m_regExp.setCaseSensitivity(Qt::CaseSensitive);
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m_options.removeOne(QLatin1String("match-case"));
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}
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}
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bool AdBlockRule::networkMatch(const QString &encodedUrl) const
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{
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if (m_cssRule) {
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#if defined(ADBLOCKRULE_DEBUG)
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qDebug() << "AdBlockRule::" << __FUNCTION__ << "m_cssRule" << m_cssRule;
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#endif
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return false;
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}
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if (!m_enabled) {
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#if defined(ADBLOCKRULE_DEBUG)
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qDebug() << "AdBlockRule::" << __FUNCTION__ << "is not enabled";
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#endif
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return false;
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}
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bool matched = m_regExp.indexIn(encodedUrl) != -1;
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if (matched
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&& !m_options.isEmpty()) {
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// we only support domain right now
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if (m_options.count() == 1) {
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foreach(const QString & option, m_options) {
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if (option.startsWith("domain=")) {
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QUrl url = QUrl::fromEncoded(encodedUrl.toUtf8());
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QString host = url.host();
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QStringList domainOptions = option.mid(7).split('|');
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foreach(QString domainOption, domainOptions) {
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bool negate = domainOption.at(0) == '~';
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if (negate) {
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domainOption = domainOption.mid(1);
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}
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bool hostMatched = domainOption == host;
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if (hostMatched && !negate) {
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2011-03-27 21:59:40 +02:00
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return true;
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}
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if (!hostMatched && negate) {
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2011-03-27 21:59:40 +02:00
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return true;
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2011-11-06 17:01:23 +01:00
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}
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2011-03-27 21:59:40 +02:00
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}
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}
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}
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}
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#if defined(ADBLOCKRULE_DEBUG)
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qDebug() << "AdBlockRule::" << __FUNCTION__ << "options are currently not supported" << m_options;
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#endif
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return false;
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}
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#if defined(ADBLOCKRULE_DEBUG)
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//qDebug() << "AdBlockRule::" << __FUNCTION__ << encodedUrl << "MATCHED" << matched << filter();
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#endif
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return matched;
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}
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bool AdBlockRule::isException() const
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{
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return m_exception;
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}
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void AdBlockRule::setException(bool exception)
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{
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m_exception = exception;
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}
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bool AdBlockRule::isEnabled() const
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{
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return m_enabled;
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}
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void AdBlockRule::setEnabled(bool enabled)
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{
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m_enabled = enabled;
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if (!enabled) {
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m_filter = QLatin1String("!") + m_filter;
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2011-11-06 17:01:23 +01:00
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}
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else {
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m_filter = m_filter.mid(1);
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}
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}
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QString AdBlockRule::regExpPattern() const
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{
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return m_regExp.pattern();
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}
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2011-11-06 17:01:23 +01:00
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static QString convertPatternToRegExp(const QString &wildcardPattern)
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{
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2011-03-27 21:59:40 +02:00
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QString pattern = wildcardPattern;
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return pattern.replace(QRegExp(QLatin1String("\\*+")), QLatin1String("*")) // remove multiple wildcards
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.replace(QRegExp(QLatin1String("\\^\\|$")), QLatin1String("^")) // remove anchors following separator placeholder
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.replace(QRegExp(QLatin1String("^(\\*)")), QLatin1String("")) // remove leading wildcards
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.replace(QRegExp(QLatin1String("(\\*)$")), QLatin1String(""))
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.replace(QRegExp(QLatin1String("(\\W)")), QLatin1String("\\\\1")) // escape special symbols
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.replace(QRegExp(QLatin1String("^\\\\\\|\\\\\\|")),
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QLatin1String("^[\\w\\-]+:\\/+(?!\\/)(?:[^\\/]+\\.)?")) // process extended anchor at expression start
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.replace(QRegExp(QLatin1String("\\\\\\^")),
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QLatin1String("(?:[^\\w\\d\\-.%]|$)")) // process separator placeholders
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.replace(QRegExp(QLatin1String("^\\\\\\|")), QLatin1String("^")) // process anchor at expression start
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.replace(QRegExp(QLatin1String("\\\\\\|$")), QLatin1String("$")) // process anchor at expression end
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.replace(QRegExp(QLatin1String("\\\\\\*")), QLatin1String(".*")) // replace wildcards by .*
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;
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2011-03-27 21:59:40 +02:00
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}
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void AdBlockRule::setPattern(const QString &pattern, bool isRegExp)
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{
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Q_UNUSED(isRegExp)
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m_regExp = QRegExp(convertPatternToRegExp(pattern), Qt::CaseInsensitive, QRegExp::RegExp);
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2011-03-27 21:59:40 +02:00
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}
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