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Diffstat (limited to 'src/network/kernel/qtldurl.cpp')
-rw-r--r-- | src/network/kernel/qtldurl.cpp | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/src/network/kernel/qtldurl.cpp b/src/network/kernel/qtldurl.cpp new file mode 100644 index 0000000000..c2f7d1de26 --- /dev/null +++ b/src/network/kernel/qtldurl.cpp @@ -0,0 +1,139 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <qglobal.h> + +#include <QtNetwork/private/qtnetworkglobal_p.h> + +#if QT_CONFIG(topleveldomain) + +#include "qplatformdefs.h" +#include "qurl.h" +#include "private/qurltlds_p.h" +#include "private/qtldurl_p.h" +#include "QtCore/qstring.h" +#include "QtCore/qvector.h" + +QT_BEGIN_NAMESPACE + +enum TLDMatchType { + ExactMatch, + SuffixMatch, + ExceptionMatch, +}; + +static bool containsTLDEntry(QStringView entry, TLDMatchType match) +{ + const QStringView matchSymbols[] = { + u"", + u"*", + u"!", + }; + const auto symbol = matchSymbols[match]; + int index = qt_hash(entry, qt_hash(symbol)) % tldCount; + + // select the right chunk from the big table + short chunk = 0; + uint chunkIndex = tldIndices[index], offset = 0; + while (chunk < tldChunkCount && tldIndices[index] >= tldChunks[chunk]) { + chunkIndex -= tldChunks[chunk]; + offset += tldChunks[chunk]; + chunk++; + } + + // check all the entries from the given index + while (chunkIndex < tldIndices[index+1] - offset) { + const auto utf8 = tldData[chunk] + chunkIndex; + if ((symbol.isEmpty() || QLatin1Char(*utf8) == symbol) && entry == QString::fromUtf8(utf8 + symbol.size())) + return true; + chunkIndex += qstrlen(utf8) + 1; // +1 for the ending \0 + } + return false; +} + +/*! + \internal + + Return the top-level-domain per Qt's copy of the Mozilla public suffix list of + \a domain. +*/ + +Q_NETWORK_EXPORT QString qTopLevelDomain(const QString &domain) +{ + const QString domainLower = domain.toLower(); + QVector<QStringRef> sections = domainLower.splitRef(QLatin1Char('.'), Qt::SkipEmptyParts); + if (sections.isEmpty()) + return QString(); + + QString level, tld; + for (int j = sections.count() - 1; j >= 0; --j) { + level.prepend(QLatin1Char('.') + sections.at(j)); + if (qIsEffectiveTLD(level.rightRef(level.size() - 1))) + tld = level; + } + return tld; +} + +/*! + \internal + + Return true if \a domain is a top-level-domain per Qt's copy of the Mozilla public suffix list. +*/ + +Q_NETWORK_EXPORT bool qIsEffectiveTLD(const QStringRef &domain) +{ + // for domain 'foo.bar.com': + // 1. return if TLD table contains 'foo.bar.com' + // 2. else if table contains '*.bar.com', + // 3. test that table does not contain '!foo.bar.com' + + if (containsTLDEntry(domain, ExactMatch)) // 1 + return true; + + const int dot = domain.indexOf(QLatin1Char('.')); + if (dot < 0) // Actual TLD: may be effective if the subject of a wildcard rule: + return containsTLDEntry(QString(QLatin1Char('.') + domain), SuffixMatch); + if (containsTLDEntry(domain.mid(dot), SuffixMatch)) // 2 + return !containsTLDEntry(domain, ExceptionMatch); // 3 + return false; +} + +QT_END_NAMESPACE + +#endif |