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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2013-2022 Regents of the University of California.
*
* This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
*
* ndn-cxx library is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later version.
*
* ndn-cxx library 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 GNU Lesser General Public License for more details.
*
* You should have received copies of the GNU General Public License and GNU Lesser
* General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
* <http://www.gnu.org/licenses/>.
*
* See AUTHORS.md for complete list of ndn-cxx authors and contributors.
*/
#include "ndn-cxx/security/validator.hpp"
#include "ndn-cxx/security/validation-policy-simple-hierarchy.hpp"
#include "tests/test-common.hpp"
#include "tests/unit/security/validator-fixture.hpp"
namespace ndn {
namespace security {
inline namespace v2 {
namespace tests {
using namespace ndn::tests;
BOOST_AUTO_TEST_SUITE(Security)
BOOST_FIXTURE_TEST_SUITE(TestValidator, HierarchicalValidatorFixture<ValidationPolicySimpleHierarchy>)
BOOST_AUTO_TEST_CASE(ConstructorSetValidator)
{
auto middlePolicy = make_unique<ValidationPolicySimpleHierarchy>();
auto innerPolicy = make_unique<ValidationPolicySimpleHierarchy>();
validator.getPolicy().setInnerPolicy(std::move(middlePolicy));
validator.getPolicy().setInnerPolicy(std::move(innerPolicy));
BOOST_CHECK(validator.getPolicy().m_validator != nullptr);
BOOST_CHECK(validator.getPolicy().getInnerPolicy().m_validator != nullptr);
BOOST_CHECK(validator.getPolicy().getInnerPolicy().getInnerPolicy().m_validator != nullptr);
BOOST_CHECK_THROW(validator.getPolicy().setInnerPolicy(nullptr), std::invalid_argument);
}
BOOST_AUTO_TEST_CASE(BadSignatureInfo)
{
Interest interest("/Security/ValidatorFixture/Sub1/Sub2/Interest");
m_keyChain.sign(interest, signingByIdentity(subIdentity)
.setSignedInterestFormat(SignedInterestFormat::V03));
// add an unrecognized critical element inside InterestSignatureInfo
auto si = interest.getSignatureInfo().value();
si.addCustomTlv("7F00"_block);
interest.setSignatureInfo(si);
BOOST_REQUIRE_THROW(interest.getSignatureInfo(), tlv::Error);
BOOST_REQUIRE_NO_THROW(interest.getSignatureValue());
VALIDATE_FAILURE(interest, "InterestSignatureInfo decoding should fail");
BOOST_TEST(lastError.getCode() == ValidationError::MALFORMED_SIGNATURE);
BOOST_TEST(face.sentInterests.size() == 0);
}
BOOST_AUTO_TEST_CASE(BadSignatureValue)
{
const uint8_t sv[] = {0x12, 0x34, 0x56, 0x78};
Interest interest("/Security/ValidatorFixture/Sub1/Sub2/Interest");
m_keyChain.sign(interest, signingByIdentity(subIdentity)
.setSignedInterestFormat(SignedInterestFormat::V03));
interest.setSignatureValue(sv);
VALIDATE_FAILURE(interest, "Signature check should fail");
BOOST_TEST(lastError.getCode() == ValidationError::INVALID_SIGNATURE);
BOOST_TEST(face.sentInterests.size() == 1);
Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
m_keyChain.sign(data, signingByIdentity(subIdentity));
data.setSignatureValue(sv);
VALIDATE_FAILURE(data, "Signature check should fail");
BOOST_TEST(lastError.getCode() == ValidationError::INVALID_SIGNATURE);
BOOST_TEST(face.sentInterests.size() == 1);
}
BOOST_AUTO_TEST_CASE(Timeout)
{
processInterest = nullptr; // no response for any interest
Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
m_keyChain.sign(data, signingByIdentity(subIdentity));
VALIDATE_FAILURE(data, "Should fail to retrieve certificate");
BOOST_TEST(lastError.getCode() == ValidationError::CANNOT_RETRIEVE_CERT);
BOOST_TEST(face.sentInterests.size() == 4);
}
BOOST_AUTO_TEST_CASE(Nack)
{
processInterest = [this] (const Interest& interest) {
face.receive(makeNack(interest, lp::NackReason::NO_ROUTE));
};
Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
m_keyChain.sign(data, signingByIdentity(subIdentity));
VALIDATE_FAILURE(data, "All interests should get NACKed");
BOOST_TEST(lastError.getCode() == ValidationError::CANNOT_RETRIEVE_CERT);
// 1 for the first interest, 3 for the retries on nack
BOOST_TEST(face.sentInterests.size() == 4);
}
BOOST_AUTO_TEST_CASE(MalformedCert)
{
Data malformedCert = subIdentity.getDefaultKey().getDefaultCertificate();
malformedCert.setContentType(tlv::ContentType_Blob);
m_keyChain.sign(malformedCert, signingByIdentity(identity));
// wrong content type & missing ValidityPeriod
BOOST_REQUIRE_THROW(Certificate(malformedCert.wireEncode()), tlv::Error);
auto originalProcessInterest = processInterest;
processInterest = [&] (const Interest& interest) {
if (interest.getName().isPrefixOf(malformedCert.getName())) {
face.receive(malformedCert);
}
else {
originalProcessInterest(interest);
}
};
Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
m_keyChain.sign(data, signingByIdentity(subIdentity));
VALIDATE_FAILURE(data, "Signed by a malformed certificate");
BOOST_TEST(lastError.getCode() == ValidationError::MALFORMED_CERT);
BOOST_TEST(face.sentInterests.size() == 1);
}
BOOST_AUTO_TEST_CASE(ExpiredCert)
{
Data expiredCert = subIdentity.getDefaultKey().getDefaultCertificate();
SignatureInfo info;
info.setValidityPeriod(ValidityPeriod::makeRelative(-2_h, -1_h));
m_keyChain.sign(expiredCert, signingByIdentity(identity).setSignatureInfo(info));
BOOST_REQUIRE_NO_THROW(Certificate(expiredCert.wireEncode()));
auto originalProcessInterest = processInterest;
processInterest = [&] (const Interest& interest) {
if (interest.getName().isPrefixOf(expiredCert.getName())) {
face.receive(expiredCert);
}
else {
originalProcessInterest(interest);
}
};
Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
m_keyChain.sign(data, signingByIdentity(subIdentity));
VALIDATE_FAILURE(data, "Signed by an expired certificate");
BOOST_TEST(lastError.getCode() == ValidationError::EXPIRED_CERT);
BOOST_TEST(face.sentInterests.size() == 1);
}
BOOST_AUTO_TEST_CASE(ResetAnchors)
{
validator.resetAnchors();
Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
m_keyChain.sign(data, signingByIdentity(subIdentity));
VALIDATE_FAILURE(data, "Should fail, as no anchors configured");
BOOST_TEST(lastError.getCode() == ValidationError::LOOP_DETECTED);
}
BOOST_AUTO_TEST_CASE(TrustedCertCaching)
{
Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
m_keyChain.sign(data, signingByIdentity(subIdentity));
VALIDATE_SUCCESS(data, "Should get accepted, as signed by the policy-compliant cert");
BOOST_TEST(face.sentInterests.size() == 1);
face.sentInterests.clear();
processInterest = nullptr; // disable data responses from mocked network
VALIDATE_SUCCESS(data, "Should get accepted, based on the cached trusted cert");
BOOST_TEST(face.sentInterests.size() == 0);
face.sentInterests.clear();
advanceClocks(1_h, 2); // expire trusted cache
VALIDATE_FAILURE(data, "Should try and fail to retrieve certs");
BOOST_TEST(lastError.getCode() == ValidationError::CANNOT_RETRIEVE_CERT);
BOOST_TEST(face.sentInterests.size() > 1);
}
BOOST_AUTO_TEST_CASE(ResetVerifiedCerts)
{
Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
m_keyChain.sign(data, signingByIdentity(subIdentity));
VALIDATE_SUCCESS(data, "Should get accepted, as signed by the policy-compliant cert");
// reset anchors
validator.resetAnchors();
VALIDATE_SUCCESS(data, "Should get accepted, as signed by the cert in trusted cache");
// reset trusted cache
validator.resetVerifiedCertificates();
VALIDATE_FAILURE(data, "Should fail, as no trusted cache or anchors");
BOOST_TEST(lastError.getCode() == ValidationError::LOOP_DETECTED);
}
BOOST_AUTO_TEST_CASE(UntrustedCertCaching)
{
Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
m_keyChain.sign(data, signingByIdentity(subSelfSignedIdentity));
VALIDATE_FAILURE(data, "Should fail, as signed by the policy-violating cert");
BOOST_TEST(lastError.getCode() == ValidationError::LOOP_DETECTED);
BOOST_TEST(face.sentInterests.size() == 1);
face.sentInterests.clear();
processInterest = nullptr; // disable data responses from mocked network
VALIDATE_FAILURE(data, "Should fail again, but no network operations expected");
BOOST_TEST(lastError.getCode() == ValidationError::LOOP_DETECTED);
BOOST_TEST(face.sentInterests.size() == 0);
face.sentInterests.clear();
advanceClocks(10_min, 2); // expire untrusted cache
VALIDATE_FAILURE(data, "Should try and fail to retrieve certs");
BOOST_TEST(lastError.getCode() == ValidationError::CANNOT_RETRIEVE_CERT);
BOOST_TEST(face.sentInterests.size() > 1);
}
class ValidationPolicySimpleHierarchyForInterestOnly : public ValidationPolicySimpleHierarchy
{
public:
void
checkPolicy(const Data&, const shared_ptr<ValidationState>& state,
const ValidationContinuation& continueValidation) override
{
continueValidation(nullptr, state);
}
};
BOOST_FIXTURE_TEST_CASE(ValidateInterestsButBypassForData,
HierarchicalValidatorFixture<ValidationPolicySimpleHierarchyForInterestOnly>)
{
Interest interest("/Security/ValidatorFixture/Sub1/Sub2/Interest");
Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
VALIDATE_FAILURE(interest, "Unsigned");
BOOST_TEST(lastError.getCode() == ValidationError::MALFORMED_SIGNATURE);
VALIDATE_SUCCESS(data, "Policy bypasses validation for all data");
BOOST_TEST(face.sentInterests.size() == 0);
face.sentInterests.clear();
interest = Interest("/Security/ValidatorFixture/Sub1/Sub2/Interest");
m_keyChain.sign(interest, signingWithSha256());
m_keyChain.sign(data, signingWithSha256());
VALIDATE_FAILURE(interest, "Required KeyLocator/Name missing (not passed to policy)");
BOOST_TEST(lastError.getCode() == ValidationError::POLICY_ERROR);
VALIDATE_SUCCESS(data, "Policy bypasses validation for all data");
BOOST_TEST(face.sentInterests.size() == 0);
face.sentInterests.clear();
m_keyChain.sign(interest, signingByIdentity(identity));
m_keyChain.sign(data, signingByIdentity(identity));
VALIDATE_SUCCESS(interest, "Should get accepted, as signed by the anchor");
VALIDATE_SUCCESS(data, "Policy bypasses validation for all data");
BOOST_TEST(face.sentInterests.size() == 0);
face.sentInterests.clear();
m_keyChain.sign(interest, signingByIdentity(subIdentity));
m_keyChain.sign(data, signingByIdentity(subIdentity));
VALIDATE_FAILURE(interest, "Should fail, as policy is not allowed to create new trust anchors");
BOOST_TEST(lastError.getCode() == ValidationError::POLICY_ERROR);
VALIDATE_SUCCESS(data, "Policy bypasses validation for all data");
BOOST_TEST(face.sentInterests.size() == 1);
face.sentInterests.clear();
m_keyChain.sign(interest, signingByIdentity(otherIdentity));
m_keyChain.sign(data, signingByIdentity(otherIdentity));
VALIDATE_FAILURE(interest, "Should fail, as signed by the policy-violating cert");
BOOST_TEST(lastError.getCode() == ValidationError::POLICY_ERROR);
VALIDATE_SUCCESS(data, "Policy bypasses validation for all data");
// no network operations expected, as certificate is not validated by the policy
BOOST_TEST(face.sentInterests.size() == 0);
face.sentInterests.clear();
advanceClocks(1_h, 2); // expire trusted cache
m_keyChain.sign(interest, signingByIdentity(subSelfSignedIdentity));
m_keyChain.sign(data, signingByIdentity(subSelfSignedIdentity));
VALIDATE_FAILURE(interest, "Should fail, as policy is not allowed to create new trust anchors");
BOOST_TEST(lastError.getCode() == ValidationError::POLICY_ERROR);
VALIDATE_SUCCESS(data, "Policy bypasses validation for all data");
BOOST_TEST(face.sentInterests.size() == 1);
face.sentInterests.clear();
}
BOOST_AUTO_TEST_CASE(InfiniteCertChain)
{
processInterest = [this] (const Interest& interest) {
// create another key for the same identity and sign it properly
Key parentKey = m_keyChain.createKey(subIdentity);
Key requestedKey = subIdentity.getKey(interest.getName());
SignatureInfo sigInfo;
sigInfo.setKeyLocator(parentKey.getName());
auto si = signingByKey(parentKey).setSignatureInfo(sigInfo);
auto cert = m_keyChain.makeCertificate(requestedKey, si);
face.receive(cert);
};
Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
m_keyChain.sign(data, signingByIdentity(subIdentity)
.setSignatureInfo(SignatureInfo()
.setKeyLocator(subIdentity.getDefaultKey().getName())));
validator.setMaxDepth(40);
BOOST_CHECK_EQUAL(validator.getMaxDepth(), 40);
VALIDATE_FAILURE(data, "Should fail, as certificate should be looped");
BOOST_TEST(lastError.getCode() == ValidationError::EXCEEDED_DEPTH_LIMIT);
BOOST_TEST(face.sentInterests.size() == 40);
face.sentInterests.clear();
advanceClocks(1_h, 5); // expire caches
validator.setMaxDepth(30);
BOOST_CHECK_EQUAL(validator.getMaxDepth(), 30);
VALIDATE_FAILURE(data, "Should fail, as certificate chain is infinite");
BOOST_TEST(lastError.getCode() == ValidationError::EXCEEDED_DEPTH_LIMIT);
BOOST_TEST(face.sentInterests.size() == 30);
}
BOOST_AUTO_TEST_CASE(LoopedCertChain)
{
auto s1 = m_keyChain.createIdentity("/loop");
auto k1 = m_keyChain.createKey(s1, RsaKeyParams(name::Component("key1")));
auto k2 = m_keyChain.createKey(s1, RsaKeyParams(name::Component("key2")));
auto k3 = m_keyChain.createKey(s1, RsaKeyParams(name::Component("key3")));
auto makeLoopCert = [this] (Key& key, const Key& signer) {
SignatureInfo sigInfo;
sigInfo.setKeyLocator(signer.getName());
auto si = signingByKey(signer).setSignatureInfo(sigInfo);
auto cert = m_keyChain.makeCertificate(key, si);
m_keyChain.setDefaultCertificate(key, cert);
cache.insert(cert);
};
makeLoopCert(k1, k2);
makeLoopCert(k2, k3);
makeLoopCert(k3, k1);
Data data("/loop/Data");
m_keyChain.sign(data, signingByKey(k1));
VALIDATE_FAILURE(data, "Should fail, as certificate chain loops");
BOOST_TEST(lastError.getCode() == ValidationError::LOOP_DETECTED);
BOOST_TEST_REQUIRE(face.sentInterests.size() == 3);
BOOST_CHECK_EQUAL(face.sentInterests[0].getName(), k1.getDefaultCertificate().getName());
BOOST_CHECK_EQUAL(face.sentInterests[1].getName(), k2.getName());
BOOST_CHECK_EQUAL(face.sentInterests[2].getName(), k3.getName());
}
BOOST_AUTO_TEST_SUITE_END() // TestValidator
BOOST_AUTO_TEST_SUITE_END() // Security
} // namespace tests
} // inline namespace v2
} // namespace security
} // namespace ndn