Restored Adblock moving hiding logic to the one used in kwebkitpart

This will let everyone to save time reinventing the wheel and let us
remove webpage from adblockmanager code, but just manage it via (Q)NAM.

1 files changed, 180 insertions, 0 deletions

diff --git a/src/adblock/adblockrulefallbackimpl.cpp b/src/adblock/adblockrulefallbackimpl.cpp
new file mode 100644
index 00000000..b547beb0
--- /dev/null
+++ b/src/adblock/adblockrulefallbackimpl.cpp
@@ -0,0 +1,180 @@
+/* ============================================================
+*
+* This file is a part of the rekonq project
+*
+* Copyright (C) 2010-2011 by Benjamin Poulain <ikipou at gmail dot com>
+* Copyright (C) 2011-2012 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 "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_thirdPartyOption(false)
+{
+    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);
+
+        if (options.contains(QL1S("third-party")))
+            m_thirdPartyOption = true;
+
+        Q_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('|'));
+                Q_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
+{
+    if (m_thirdPartyOption)
+    {
+        const QString referer = request.rawHeader("referer");
+        const QString host = request.url().host();
+
+        if (referer.contains(host)) // is NOT third party
+            return false;
+    }
+
+    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");
+}