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39
40#include <qglobal.h>
41
42#if QT_CONFIG(topleveldomain)
43
44#include "qplatformdefs.h"
45#include "qurl.h"
46#include "private/qurltlds_p.h"
47#include "private/qtldurl_p.h"
48#include "QtCore/qstring.h"
49#include "QtCore/qvector.h"
50
51QT_BEGIN_NAMESPACE
52
53enum TLDMatchType {
54 ExactMatch,
55 SuffixMatch,
56 ExceptionMatch,
57};
58
59static bool containsTLDEntry(QStringView entry, TLDMatchType match)
60{
61 const QStringView matchSymbols[] = {
62 u"",
63 u"*",
64 u"!",
65 };
66 const auto symbol = matchSymbols[match];
67 int index = qt_hash(entry, qt_hash(symbol)) % tldCount;
68
69 // select the right chunk from the big table
70 short chunk = 0;
71 uint chunkIndex = tldIndices[index], offset = 0;
72 while (chunk < tldChunkCount && tldIndices[index] >= tldChunks[chunk]) {
73 chunkIndex -= tldChunks[chunk];
74 offset += tldChunks[chunk];
75 chunk++;
76 }
77
78 // check all the entries from the given index
79 while (chunkIndex < tldIndices[index+1] - offset) {
80 const auto utf8 = tldData[chunk] + chunkIndex;
81 if ((symbol.isEmpty() || QLatin1Char(*utf8) == symbol) && entry == QString::fromUtf8(utf8 + symbol.size()))
82 return true;
83 chunkIndex += qstrlen(utf8) + 1; // +1 for the ending \0
84 }
85 return false;
86}
87
88/*!
89 \internal
90
91 Return the top-level-domain per Qt's copy of the Mozilla public suffix list of
92 \a domain.
93*/
94
95Q_CORE_EXPORT QString qTopLevelDomain(const QString &domain)
96{
97 const QString domainLower = domain.toLower();
98 QVector<QStringRef> sections = domainLower.splitRef(QLatin1Char('.'), QString::SkipEmptyParts);
99 if (sections.isEmpty())
100 return QString();
101
102 QString level, tld;
103 for (int j = sections.count() - 1; j >= 0; --j) {
104 level.prepend(QLatin1Char('.') + sections.at(j));
105 if (qIsEffectiveTLD(level.rightRef(level.size() - 1)))
106 tld = level;
107 }
108 return tld;
109}
110
111/*!
112 \internal
113
114 Return true if \a domain is a top-level-domain per Qt's copy of the Mozilla public suffix list.
115*/
116
117Q_CORE_EXPORT bool qIsEffectiveTLD(const QStringRef &domain)
118{
119 // for domain 'foo.bar.com':
120 // 1. return if TLD table contains 'foo.bar.com'
121 // 2. else if table contains '*.bar.com',
122 // 3. test that table does not contain '!foo.bar.com'
123
124 if (containsTLDEntry(domain, ExactMatch)) // 1
125 return true;
126
127 const int dot = domain.indexOf(QLatin1Char('.'));
128 if (dot >= 0) {
129 if (containsTLDEntry(domain.mid(dot), SuffixMatch)) // 2
130 return !containsTLDEntry(domain, ExceptionMatch); // 3
131 }
132 return false;
133}
134
135QT_END_NAMESPACE
136
137#endif
138