QDnsLookup: allow looking up the root domain

[ChangeLog][QtNetwork][QDnsLookup] It is now possible to look up the
root DNS domain, by setting the name property to an empty string. This
query is usually done while setting the query type to NS.

Change-Id: I5f7f427ded124479baa6fffd175f688395941610
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
This commit is contained in:
Thiago Macieira 2023-05-15 12:41:40 -07:00
parent 01dfcfcecf
commit 8b6bd8ed99
2 changed files with 39 additions and 8 deletions

View File

@ -343,6 +343,10 @@ bool QDnsLookup::isFinished() const
\property QDnsLookup::name
\brief the name to lookup.
If the name to look up is empty, QDnsLookup will attempt to resolve the
root domain of DNS. That query is usually performed with QDnsLookup::type
set to \l{QDnsLookup::Type}{NS}.
\note The name will be encoded using IDNA, which means it's unsuitable for
querying SRV records compatible with the DNS-SD specification.
*/
@ -1050,6 +1054,10 @@ QDnsTextRecord &QDnsTextRecord::operator=(const QDnsTextRecord &other)
static QDnsLookupRunnable::EncodedLabel encodeLabel(const QString &label)
{
QDnsLookupRunnable::EncodedLabel::value_type rootDomain = u'.';
if (label.isEmpty())
return QDnsLookupRunnable::EncodedLabel(1, rootDomain);
QString encodedLabel = qt_ACE_do(label, ToAceOnly, ForbidLeadingDot);
#ifdef Q_OS_WIN
return encodedLabel;

View File

@ -39,6 +39,8 @@ public slots:
void initTestCase();
private slots:
void lookupLocalhost();
void lookupRoot();
void lookup_data();
void lookup();
void lookupIdn_data() { lookup_data(); }
@ -206,6 +208,35 @@ QStringList tst_QDnsLookup::domainNameListAlternatives(const QString &input)
return alternatives;
}
void tst_QDnsLookup::lookupLocalhost()
{
QDnsLookup lookup(QDnsLookup::Type::A, u"localhost"_s);
lookup.lookup();
QTRY_VERIFY_WITH_TIMEOUT(lookup.isFinished(), Timeout);
QCOMPARE(lookup.error(), QDnsLookup::NoError);
QList<QDnsHostAddressRecord> hosts = lookup.hostAddressRecords();
QCOMPARE(hosts.size(), 1);
QCOMPARE(hosts.at(0).value(), QHostAddress::LocalHost);
QVERIFY2(hosts.at(0).name().startsWith(lookup.name()),
qPrintable(hosts.at(0).name()));
}
void tst_QDnsLookup::lookupRoot()
{
QDnsLookup lookup(QDnsLookup::Type::NS, u""_s);
lookup.lookup();
QTRY_VERIFY_WITH_TIMEOUT(lookup.isFinished(), Timeout);
QCOMPARE(lookup.error(), QDnsLookup::NoError);
const QList<QDnsDomainNameRecord> servers = lookup.nameServerRecords();
QVERIFY(!servers.isEmpty());
for (const QDnsDomainNameRecord &ns : servers) {
QCOMPARE(ns.name(), QString());
QVERIFY(ns.value().endsWith(".root-servers.net"));
}
}
void tst_QDnsLookup::lookup_data()
{
QTest::addColumn<int>("type");
@ -219,22 +250,18 @@ void tst_QDnsLookup::lookup_data()
QTest::addColumn<QString>("srv");
QTest::addColumn<QString>("txt");
QTest::newRow("a-empty") << int(QDnsLookup::A) << "" << int(QDnsLookup::InvalidRequestError) << "" << "" << "" << "" << ""<< "" << "";
QTest::newRow("a-notfound") << int(QDnsLookup::A) << "invalid.invalid" << int(QDnsLookup::NotFoundError) << "" << "" << "" << "" << "" << "" << "";
QTest::newRow("a-single") << int(QDnsLookup::A) << "a-single" << int(QDnsLookup::NoError) << "" << "192.0.2.1" << "" << "" << "" << "" << "";
QTest::newRow("a-multi") << int(QDnsLookup::A) << "a-multi" << int(QDnsLookup::NoError) << "" << "192.0.2.1;192.0.2.2;192.0.2.3" << "" << "" << "" << "" << "";
QTest::newRow("aaaa-empty") << int(QDnsLookup::AAAA) << "" << int(QDnsLookup::InvalidRequestError) << "" << "" << "" << "" << "" << "" << "";
QTest::newRow("aaaa-notfound") << int(QDnsLookup::AAAA) << "invalid.invalid" << int(QDnsLookup::NotFoundError) << "" << "" << "" << "" << "" << "" << "";
QTest::newRow("aaaa-single") << int(QDnsLookup::AAAA) << "aaaa-single" << int(QDnsLookup::NoError) << "" << "2001:db8::1" << "" << "" << "" << "" << "";
QTest::newRow("aaaa-multi") << int(QDnsLookup::AAAA) << "aaaa-multi" << int(QDnsLookup::NoError) << "" << "2001:db8::1;2001:db8::2;2001:db8::3" << "" << "" << "" << "" << "";
QTest::newRow("any-empty") << int(QDnsLookup::ANY) << "" << int(QDnsLookup::InvalidRequestError) << "" << "" << "" << "" << "" << "" << "";
QTest::newRow("any-notfound") << int(QDnsLookup::ANY) << "invalid.invalid" << int(QDnsLookup::NotFoundError) << "" << "" << "" << "" << "" << "" << "";
QTest::newRow("any-a-single") << int(QDnsLookup::ANY) << "a-single" << int(QDnsLookup::NoError) << "" << "192.0.2.1" << "" << "" << "" << "" << "";
QTest::newRow("any-a-plus-aaaa") << int(QDnsLookup::ANY) << "a-plus-aaaa" << int(QDnsLookup::NoError) << "" << "198.51.100.1;2001:db8::1:1" << "" << "" << "" << "" << "";
QTest::newRow("any-multi") << int(QDnsLookup::ANY) << "multi" << int(QDnsLookup::NoError) << "" << "198.51.100.1;198.51.100.2;198.51.100.3;2001:db8::1:1;2001:db8::1:2" << "" << "" << "" << "" << "";
QTest::newRow("mx-empty") << int(QDnsLookup::MX) << "" << int(QDnsLookup::InvalidRequestError) << "" << "" << "" << "" << "" << "" << "";
QTest::newRow("mx-notfound") << int(QDnsLookup::MX) << "invalid.invalid" << int(QDnsLookup::NotFoundError) << "" << "" << "" << "" << "" << "" << "";
QTest::newRow("mx-single") << int(QDnsLookup::MX) << "mx-single" << int(QDnsLookup::NoError) << "" << "" << "10 multi" << "" << "" << "" << "";
QTest::newRow("mx-single-cname") << int(QDnsLookup::MX) << "mx-single-cname" << int(QDnsLookup::NoError) << "" << "" << "10 cname" << "" << "" << "" << "";
@ -243,12 +270,10 @@ void tst_QDnsLookup::lookup_data()
<< "10 multi;10 a-single|"
"10 a-single;10 multi" << "" << "" << "" << "";
QTest::newRow("ns-empty") << int(QDnsLookup::NS) << "" << int(QDnsLookup::InvalidRequestError) << "" << "" << "" << "" << "" << "" << "";
QTest::newRow("ns-notfound") << int(QDnsLookup::NS) << "invalid.invalid" << int(QDnsLookup::NotFoundError) << "" << "" << "" << "" << "" << "" << "";
QTest::newRow("ns-single") << int(QDnsLookup::NS) << "ns-single" << int(QDnsLookup::NoError) << "" << "" << "" << "ns11.cloudns.net." << "" << "" << "";
QTest::newRow("ns-multi") << int(QDnsLookup::NS) << "ns-multi" << int(QDnsLookup::NoError) << "" << "" << "" << "ns11.cloudns.net.;ns12.cloudns.net." << "" << "" << "";
QTest::newRow("ptr-empty") << int(QDnsLookup::PTR) << "" << int(QDnsLookup::InvalidRequestError) << "" << "" << "" << "" << "" << "" << "";
QTest::newRow("ptr-notfound") << int(QDnsLookup::PTR) << "invalid.invalid" << int(QDnsLookup::NotFoundError) << "" << "" << "" << "" << "" << "" << "";
#if 0
// temporarily disabled since the new hosting provider can't insert
@ -256,7 +281,6 @@ void tst_QDnsLookup::lookup_data()
QTest::newRow("ptr-single") << int(QDnsLookup::PTR) << "ptr-single" << int(QDnsLookup::NoError) << "" << "" << "" << "" << "a-single" << "" << "";
#endif
QTest::newRow("srv-empty") << int(QDnsLookup::SRV) << "" << int(QDnsLookup::InvalidRequestError) << "" << "" << "" << "" << "" << "" << "";
QTest::newRow("srv-notfound") << int(QDnsLookup::SRV) << "invalid.invalid" << int(QDnsLookup::NotFoundError) << "" << "" << "" << "" << "" << "" << "";
QTest::newRow("srv-single") << int(QDnsLookup::SRV) << "_echo._tcp.srv-single" << int(QDnsLookup::NoError) << "" << "" << "" << "" << "" << "5 0 7 multi" << "";
QTest::newRow("srv-prio") << int(QDnsLookup::SRV) << "_echo._tcp.srv-prio" << int(QDnsLookup::NoError) << "" << "" << "" << "" << "" << "1 0 7 multi;2 0 7 a-plus-aaaa" << "";
@ -267,7 +291,6 @@ void tst_QDnsLookup::lookup_data()
<< "1 50 7 multi;2 50 7 a-single;2 50 7 aaaa-single;3 50 7 a-multi|"
"1 50 7 multi;2 50 7 aaaa-single;2 50 7 a-single;3 50 7 a-multi" << "";
QTest::newRow("txt-empty") << int(QDnsLookup::TXT) << "" << int(QDnsLookup::InvalidRequestError) << "" << "" << "" << "" << "" << "" << "";
QTest::newRow("txt-notfound") << int(QDnsLookup::TXT) << "invalid.invalid" << int(QDnsLookup::NotFoundError) << "" << "" << "" << "" << "" << "" << "";
QTest::newRow("txt-single") << int(QDnsLookup::TXT) << "txt-single" << int(QDnsLookup::NoError) << "" << "" << "" << "" << "" << "" << "Hello";
QTest::newRow("txt-multi-onerr") << int(QDnsLookup::TXT) << "txt-multi-onerr" << int(QDnsLookup::NoError) << "" << "" << "" << "" << "" << ""