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176 | // Copyright (C) 2021-2024 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Kea Hooks Basic
// Commercial End User License Agreement v2.0. See COPYING file in the premium/
// directory.
#include <config.h>
#include <dns/message.h>
#include <dns/messagerenderer.h>
#include <dns/name.h>
#include <dns/opcode.h>
#include <dns/rcode.h>
#include <dns/rrclass.h>
#include <dns/rrset.h>
#include <dns/time_utils.h>
#include <dns/tsig.h>
#include <gss_tsig_api.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <gss_tsig_api_utils.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <testutils/gtest_utils.h>
#include <gtest/gtest.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
using namespace std;
using namespace isc;
using namespace isc::dns;
using namespace isc::dns::rdata;
using namespace isc::dns::rdata::generic;
using namespace isc::gss_tsig;
using namespace isc::gss_tsig::test;
using namespace isc::util;
namespace {
/// @brief Test fixture for testing the GSS-API with Kerberos 5.
class TKeyTest : public GssApiBaseTest {
public:
/// @brief Constructor.
TKeyTest() : GssApiBaseTest(), msg_() {
}
/// @brief Build a TKEY message.
///
/// @param query True if query, false if response.
/// @param qid Message ID.
/// @param key_name DNS name of the key.
/// @param token GSS-API token.
/// @return The output buffer with the TKEY message.
OutputBufferPtr buildTKey(bool query, qid_t qid, const Name& key_name,
GssApiBuffer& token);
/// @brief Decode a TKEY message.
///
/// @param input Input buffer.
/// @param[out] query True if query, false if response.
/// @param[out] qid Message ID.
/// @param[out] key_name DNS name of the key.
/// @param[out] token Pointer to GSS-API token.
void decodeTKey(const vector<uint8_t>& input, bool& query, qid_t& qid,
Name& key_name, GssApiBufferPtr& token);
/// @brief Pointer to the current message.
MessagePtr msg_;
};
OutputBufferPtr
TKeyTest::buildTKey(bool query, qid_t qid, const Name& key_name,
GssApiBuffer& token) {
msg_.reset(new Message(Message::RENDER));
msg_->setHeaderFlag(Message::HEADERFLAG_QR, query);
msg_->setQid(qid);
msg_->setRcode(Rcode::NOERROR());
msg_->setOpcode(Opcode(Opcode::QUERY_CODE));
Question question(key_name, RRClass::ANY(), RRType::TKEY());
msg_->addQuestion(question);
RRsetPtr rrset(new RRset(key_name, RRClass::ANY(), RRType::TKEY(),
RRTTL(0)));
Name algorithm("gss-tsig.");
uint32_t inception = timeFromText32("20210501120000");
uint32_t expire = timeFromText32("20210501130000");
uint16_t mode = TKEY::GSS_API_MODE;
uint16_t error = Rcode::NOERROR().getCode();
uint16_t key_len = static_cast<uint16_t>(token.getLength());
ConstRdataPtr rdata(new TKEY(algorithm, inception, expire,
mode, error, key_len,
token.getValue(), 0, 0));
rrset->addRdata(rdata);
msg_->addRRset(Message::SECTION_ADDITIONAL, rrset);
MessageRenderer renderer;
OutputBufferPtr buf(new OutputBuffer(4096));
renderer.setBuffer(buf.get());
EXPECT_NO_THROW(msg_->toWire(renderer));
return (buf);
}
void
TKeyTest::decodeTKey(const vector<uint8_t>& input, bool& query, qid_t& qid,
Name& key_name, GssApiBufferPtr& token) {
msg_.reset(new Message(Message::PARSE));
ASSERT_FALSE(input.empty());
InputBuffer buf(&input[0], input.size());
EXPECT_NO_THROW(msg_->fromWire(buf));
query = msg_->getHeaderFlag(Message::HEADERFLAG_QR);
qid = msg_->getQid();
EXPECT_EQ(Rcode::NOERROR(), msg_->getRcode());
EXPECT_EQ(Opcode(Opcode::QUERY_CODE), msg_->getOpcode());
ASSERT_EQ(1, msg_->getRRCount(Message::SECTION_QUESTION));
QuestionPtr question = *msg_->beginQuestion();
ASSERT_TRUE(question);
key_name = question->getName();
EXPECT_EQ(RRClass::ANY(), question->getClass());
EXPECT_EQ(RRType::TKEY(), question->getType());
EXPECT_EQ(0, msg_->getRRCount(Message::SECTION_ANSWER));
EXPECT_EQ(0, msg_->getRRCount(Message::SECTION_AUTHORITY));
ASSERT_EQ(1, msg_->getRRCount(Message::SECTION_ADDITIONAL));
RRsetPtr rrset = *msg_->beginSection(Message::SECTION_ADDITIONAL);
ASSERT_TRUE(rrset);
EXPECT_EQ(key_name, rrset->getName());
EXPECT_EQ(RRClass::ANY(), rrset->getClass());
ASSERT_EQ(RRType::TKEY(), rrset->getType());
EXPECT_EQ(RRTTL(0), rrset->getTTL());
ASSERT_EQ(1, rrset->getRdataCount());
auto rdata_it = rrset->getRdataIterator();
try {
const TKEY& tkey =
dynamic_cast<const TKEY&>(rdata_it->getCurrent());
EXPECT_EQ(Name("gss-tsig."), tkey.getAlgorithm());
EXPECT_EQ("20210501120000", tkey.getInceptionDate());
EXPECT_EQ("20210501130000", tkey.getExpireDate());
EXPECT_EQ(TKEY::GSS_API_MODE, tkey.getMode());
EXPECT_EQ(Rcode::NOERROR().getCode(), tkey.getError());
token.reset(new GssApiBuffer(tkey.getKeyLen(), tkey.getKey()));
EXPECT_EQ(0, tkey.getOtherLen());
EXPECT_FALSE(tkey.getOtherData());
} catch (const exception& ex) {
FAIL() << ex.what();
}
}
/// @brief Check TKEY message build.
TEST_F(TKeyTest, build) {<--- syntax error
Name key_name("1234.sig-blu.example.nil.");
qid_t qid = 0x4567;
GssApiBuffer token("foobar");
OutputBufferPtr output;
msg_.reset();
ASSERT_NO_THROW(output = buildTKey(true, qid, key_name, token));
ASSERT_TRUE(msg_);
ASSERT_NE(0, output->getLength());
}
/// @brief Check TKEY message decode.
TEST_F(TKeyTest, decode) {
Name key_name("1234.sig-blu.example.nil.");
qid_t qid = 0x4567;
GssApiBuffer token("foobar");
OutputBufferPtr output;
ASSERT_NO_THROW(output = buildTKey(true, qid, key_name, token));
ASSERT_NE(0, output->getLength());
const vector<uint8_t>& input = output->getVector();
bool query = false;
qid_t qid2 = 0;
Name key_name2("foo");
GssApiBufferPtr token2;
msg_.reset();
EXPECT_NO_THROW(decodeTKey(input, query, qid2, key_name2, token2));
ASSERT_TRUE(msg_);
EXPECT_TRUE(query);
EXPECT_EQ(qid, qid2);
EXPECT_EQ(key_name, key_name2);
ASSERT_TRUE(token2);
EXPECT_EQ("foobar", token2->getString());
}
}
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