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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/util/dns_name.h"
#include "mongo/stdx/utility.h"
#include "mongo/unittest/unittest.h"
using namespace std::literals::string_literals;
namespace mongo {
namespace {
// To silence some warnings on some compilers at some aggressive warning levels, we use an "enum
// wrapper" struct which provides a legitimate implicit conversion from the checked value to the
// underlying type.
template <typename Enum>
struct Checked {
static_assert(std::is_enum<Enum>::value, "Checked Value test data type must be an enum.");
Enum value;
Checked(Enum v) : value(v) {}
using underlying_type = typename std::underlying_type<Enum>::type;
operator underlying_type() const {
return underlying_type(value);
}
};
TEST(DNSNameTest, CorrectParsing) {
enum FQDNBool : bool { kIsFQDN = true, kNotFQDN = false };
const struct {
std::string input;
std::vector<std::string> parsedDomains;
Checked<FQDNBool> isFQDN;
} tests[] = {
{"com."s, {"com"s}, kIsFQDN},
{"com"s, {"com"s}, kNotFQDN},
{"mongodb.com."s, {"com"s, "mongodb"s}, kIsFQDN},
{"mongodb.com"s, {"com"s, "mongodb"s}, kNotFQDN},
{"atlas.mongodb.com."s, {"com"s, "mongodb"s, "atlas"s}, kIsFQDN},
{"atlas.mongodb.com"s, {"com"s, "mongodb"s, "atlas"s}, kNotFQDN},
{"server.atlas.mongodb.com."s, {"com"s, "mongodb"s, "atlas"s, "server"s}, kIsFQDN},
{"server.atlas.mongodb.com"s, {"com"s, "mongodb"s, "atlas"s, "server"s}, kNotFQDN},
};
for (const auto& test : tests) {
const ::mongo::dns::HostName host(test.input);
ASSERT_EQ(host.nameComponents().size(), test.parsedDomains.size());
for (std::size_t i = 0; i < host.nameComponents().size(); ++i) {
ASSERT_EQ(host.nameComponents()[i], test.parsedDomains[i]);
}
ASSERT(host.isFQDN() == test.isFQDN);
}
}
TEST(DNSNameTest, CanonicalName) {
const struct {
std::string input;
std::string result;
} tests[] = {
{"com."s, "com."s},
{"com"s, "com"s},
{"mongodb.com."s, "mongodb.com."s},
{"mongodb.com"s, "mongodb.com"s},
{"atlas.mongodb.com."s, "atlas.mongodb.com."s},
{"atlas.mongodb.com"s, "atlas.mongodb.com"s},
{"server.atlas.mongodb.com."s, "server.atlas.mongodb.com."s},
{"server.atlas.mongodb.com"s, "server.atlas.mongodb.com"s},
};
for (const auto& test : tests) {
const ::mongo::dns::HostName host(test.input);
ASSERT_EQ(host.canonicalName(), test.result);
}
}
TEST(DNSNameTest, NoncanonicalName) {
const struct {
std::string input;
std::string result;
} tests[] = {
{"com."s, "com"s},
{"com"s, "com"s},
{"mongodb.com."s, "mongodb.com"s},
{"mongodb.com"s, "mongodb.com"s},
{"atlas.mongodb.com."s, "atlas.mongodb.com"s},
{"atlas.mongodb.com"s, "atlas.mongodb.com"s},
{"server.atlas.mongodb.com."s, "server.atlas.mongodb.com"s},
{"server.atlas.mongodb.com"s, "server.atlas.mongodb.com"s},
};
for (const auto& test : tests) {
const ::mongo::dns::HostName host(test.input);
ASSERT_EQ(host.noncanonicalName(), test.result);
}
}
TEST(DNSNameTest, Contains) {
enum IsSubdomain : bool { kIsSubdomain = true, kNotSubdomain = false };
enum TripsCheck : bool { kFailure = true, kSuccess = false };
const struct {
std::string domain;
std::string subdomain;
Checked<IsSubdomain> isSubdomain;
Checked<TripsCheck> tripsCheck;
} tests[] = {
{"com."s, "mongodb.com."s, kIsSubdomain, kSuccess},
{"com"s, "mongodb.com"s, kIsSubdomain, kFailure},
{"com."s, "mongodb.com"s, kNotSubdomain, kFailure},
{"com"s, "mongodb.com."s, kNotSubdomain, kFailure},
{"com."s, "atlas.mongodb.com."s, kIsSubdomain, kSuccess},
{"com"s, "atlas.mongodb.com"s, kIsSubdomain, kFailure},
{"com."s, "atlas.mongodb.com"s, kNotSubdomain, kFailure},
{"com"s, "atlas.mongodb.com."s, kNotSubdomain, kFailure},
{"org."s, "atlas.mongodb.com."s, kNotSubdomain, kSuccess},
{"org"s, "atlas.mongodb.com"s, kNotSubdomain, kFailure},
{"org."s, "atlas.mongodb.com"s, kNotSubdomain, kFailure},
{"org"s, "atlas.mongodb.com."s, kNotSubdomain, kFailure},
{"com."s, "com."s, kNotSubdomain, kSuccess},
{"com"s, "com."s, kNotSubdomain, kFailure},
{"com."s, "com"s, kNotSubdomain, kFailure},
{"com"s, "com"s, kNotSubdomain, kFailure},
{"mongodb.com."s, "mongodb.com."s, kNotSubdomain, kSuccess},
{"mongodb.com."s, "mongodb.com"s, kNotSubdomain, kFailure},
{"mongodb.com"s, "mongodb.com."s, kNotSubdomain, kFailure},
{"mongodb.com"s, "mongodb.com"s, kNotSubdomain, kFailure},
{"mongodb.com."s, "atlas.mongodb.com."s, kIsSubdomain, kSuccess},
{"mongodb.com"s, "atlas.mongodb.com"s, kIsSubdomain, kFailure},
{"mongodb.com."s, "atlas.mongodb.com"s, kNotSubdomain, kFailure},
{"mongodb.com"s, "atlas.mongodb.com."s, kNotSubdomain, kFailure},
{"mongodb.com."s, "server.atlas.mongodb.com."s, kIsSubdomain, kSuccess},
{"mongodb.com"s, "server.atlas.mongodb.com"s, kIsSubdomain, kFailure},
{"mongodb.com."s, "server.atlas.mongodb.com"s, kNotSubdomain, kFailure},
{"mongodb.com"s, "server.atlas.mongodb.com."s, kNotSubdomain, kFailure},
{"mongodb.org."s, "server.atlas.mongodb.com."s, kNotSubdomain, kSuccess},
{"mongodb.org"s, "server.atlas.mongodb.com"s, kNotSubdomain, kFailure},
{"mongodb.org."s, "server.atlas.mongodb.com"s, kNotSubdomain, kFailure},
{"mongodb.org"s, "server.atlas.mongodb.com."s, kNotSubdomain, kFailure},
};
for (const auto& test : tests) {
const ::mongo::dns::HostName domain(test.domain);
const ::mongo::dns::HostName subdomain(test.subdomain);
try {
ASSERT(test.isSubdomain == IsSubdomain(domain.contains(subdomain)));
ASSERT(!test.tripsCheck);
} catch (const ExceptionFor<ErrorCodes::DNSRecordTypeMismatch>&) {
ASSERT(test.tripsCheck);
}
}
}
TEST(DNSNameTest, Resolution) {
enum Failure : bool { kFails = true, kSucceeds = false };
enum FQDNBool : bool { kIsFQDN = true, kNotFQDN = false };
const struct {
std::string domain;
std::string subdomain;
std::string result;
Checked<Failure> fails;
Checked<FQDNBool> isFQDN;
} tests[] = {
{"mongodb.com."s, "atlas"s, "atlas.mongodb.com."s, kSucceeds, kIsFQDN},
{"mongodb.com"s, "atlas"s, "atlas.mongodb.com"s, kSucceeds, kNotFQDN},
{"mongodb.com."s, "server.atlas"s, "server.atlas.mongodb.com."s, kSucceeds, kIsFQDN},
{"mongodb.com"s, "server.atlas"s, "server.atlas.mongodb.com"s, kSucceeds, kNotFQDN},
{"mongodb.com."s, "atlas."s, "FAILS"s, kFails, kNotFQDN},
{"mongodb.com"s, "atlas."s, "FAILS"s, kFails, kNotFQDN},
};
for (const auto& test : tests) {
try {
const ::mongo::dns::HostName domain(test.domain);
const ::mongo::dns::HostName subdomain(test.subdomain);
const ::mongo::dns::HostName resolved = [&] {
try {
const ::mongo::dns::HostName rv = subdomain.resolvedIn(domain);
return rv;
} catch (const ExceptionFor<ErrorCodes::DNSRecordTypeMismatch>&) {
ASSERT(test.fails);
throw;
}
}();
ASSERT(!test.fails);
ASSERT_EQ(test.result, resolved.canonicalName());
ASSERT(test.isFQDN == resolved.isFQDN());
} catch (const ExceptionFor<ErrorCodes::DNSRecordTypeMismatch>&) {
ASSERT(test.fails);
}
}
}
TEST(DNSNameTest, ForceQualification) {
enum FQDNBool : bool { kIsFQDN = true, kNotFQDN = false };
using Qualification = ::mongo::dns::HostName::Qualification;
const struct {
std::string domain;
Checked<FQDNBool> startedFQDN;
::mongo::dns::HostName::Qualification forced;
Checked<FQDNBool> becameFQDN;
std::string becameCanonical;
} tests[] = {
{"mongodb.com."s, kIsFQDN, Qualification::kFullyQualified, kIsFQDN, "mongodb.com."s},
{"mongodb.com"s, kNotFQDN, Qualification::kFullyQualified, kIsFQDN, "mongodb.com."s},
{"atlas.mongodb.com."s,
kIsFQDN,
Qualification::kFullyQualified,
kIsFQDN,
"atlas.mongodb.com."s},
{"atlas.mongodb.com"s,
kNotFQDN,
Qualification::kFullyQualified,
kIsFQDN,
"atlas.mongodb.com."s},
{"mongodb.com."s, kIsFQDN, Qualification::kRelativeName, kNotFQDN, "mongodb.com"s},
{"mongodb.com"s, kNotFQDN, Qualification::kRelativeName, kNotFQDN, "mongodb.com"s},
{"atlas.mongodb.com."s,
kIsFQDN,
Qualification::kRelativeName,
kNotFQDN,
"atlas.mongodb.com"s},
{"atlas.mongodb.com"s,
kNotFQDN,
Qualification::kRelativeName,
kNotFQDN,
"atlas.mongodb.com"s},
};
for (const auto& test : tests) {
::mongo::dns::HostName domain(test.domain);
ASSERT(stdx::as_const(domain).isFQDN() == test.startedFQDN);
domain.forceQualification(test.forced);
ASSERT(stdx::as_const(domain).isFQDN() == test.becameFQDN);
ASSERT_EQ(stdx::as_const(domain).canonicalName(), test.becameCanonical);
}
}
} // namespace
} // namespace mongo
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