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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/cert/multi_log_ct_verifier.h"
#include <string>
#include "base/file_util.h"
#include "base/files/file_path.h"
#include "net/base/net_errors.h"
#include "net/base/test_data_directory.h"
#include "net/cert/ct_log_verifier.h"
#include "net/cert/ct_serialization.h"
#include "net/cert/ct_verify_result.h"
#include "net/cert/pem_tokenizer.h"
#include "net/cert/signed_certificate_timestamp.h"
#include "net/cert/x509_certificate.h"
#include "net/test/cert_test_util.h"
#include "net/test/ct_test_util.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace net {
namespace {
class MultiLogCTVerifierTest : public ::testing::Test {
public:
virtual void SetUp() OVERRIDE {
scoped_ptr<CTLogVerifier> log(
CTLogVerifier::Create(ct::GetTestPublicKey(), ""));
ASSERT_TRUE(log);
verifier_.reset(new MultiLogCTVerifier());
verifier_->AddLog(log.Pass());
std::string der_test_cert(ct::GetDerEncodedX509Cert());
chain_ = X509Certificate::CreateFromBytes(
der_test_cert.data(),
der_test_cert.length());
ASSERT_TRUE(chain_);
}
bool CheckForSingleVerifiedSCTInResult(const ct::CTVerifyResult& result) {
return (result.verified_scts.size() == 1U) &&
result.unverified_scts.empty() &&
result.unknown_logs_scts.empty();
}
bool CheckForSCTOrigin(
const ct::CTVerifyResult& result,
ct::SignedCertificateTimestamp::Origin origin) {
return (result.verified_scts.size() > 0) &&
(result.verified_scts[0]->origin == origin);
}
bool CheckPrecertificateVerification(scoped_refptr<X509Certificate> chain) {
ct::CTVerifyResult result;
return (verifier_->Verify(chain, "", "", &result) == OK) &&
CheckForSingleVerifiedSCTInResult(result) &&
CheckForSCTOrigin(
result, ct::SignedCertificateTimestamp::SCT_EMBEDDED);
}
protected:
scoped_ptr<MultiLogCTVerifier> verifier_;
scoped_refptr<X509Certificate> chain_;
};
TEST_F(MultiLogCTVerifierTest, VerifiesEmbeddedSCT) {
scoped_refptr<X509Certificate> chain(
CreateCertificateChainFromFile(GetTestCertsDirectory(),
"ct-test-embedded-cert.pem",
X509Certificate::FORMAT_AUTO));
ASSERT_TRUE(chain);
ASSERT_TRUE(CheckPrecertificateVerification(chain));
}
TEST_F(MultiLogCTVerifierTest, VerifiesEmbeddedSCTWithPreCA) {
scoped_refptr<X509Certificate> chain(
CreateCertificateChainFromFile(GetTestCertsDirectory(),
"ct-test-embedded-with-preca-chain.pem",
X509Certificate::FORMAT_AUTO));
ASSERT_TRUE(chain);
ASSERT_TRUE(CheckPrecertificateVerification(chain));
}
TEST_F(MultiLogCTVerifierTest, VerifiesEmbeddedSCTWithIntermediate) {
scoped_refptr<X509Certificate> chain(CreateCertificateChainFromFile(
GetTestCertsDirectory(),
"ct-test-embedded-with-intermediate-chain.pem",
X509Certificate::FORMAT_AUTO));
ASSERT_TRUE(chain);
ASSERT_TRUE(CheckPrecertificateVerification(chain));
}
TEST_F(MultiLogCTVerifierTest,
VerifiesEmbeddedSCTWithIntermediateAndPreCA) {
scoped_refptr<X509Certificate> chain(CreateCertificateChainFromFile(
GetTestCertsDirectory(),
"ct-test-embedded-with-intermediate-preca-chain.pem",
X509Certificate::FORMAT_AUTO));
ASSERT_TRUE(chain);
ASSERT_TRUE(CheckPrecertificateVerification(chain));
}
TEST_F(MultiLogCTVerifierTest,
VerifiesSCTOverX509Cert) {
std::string sct(ct::GetTestSignedCertificateTimestamp());
std::string sct_list;
ASSERT_TRUE(ct::EncodeSCTListForTesting(sct, &sct_list));
ct::CTVerifyResult result;
EXPECT_EQ(OK, verifier_->Verify(chain_, "", sct_list, &result));
ASSERT_TRUE(CheckForSingleVerifiedSCTInResult(result));
ASSERT_TRUE(CheckForSCTOrigin(
result, ct::SignedCertificateTimestamp::SCT_FROM_TLS_EXTENSION));
}
TEST_F(MultiLogCTVerifierTest,
IdentifiesSCTFromUnknownLog) {
std::string sct(ct::GetTestSignedCertificateTimestamp());
// Change a byte inside the Log ID part of the SCT so it does
// not match the log used in the tests
sct[15] = 't';
std::string sct_list;
ASSERT_TRUE(ct::EncodeSCTListForTesting(sct, &sct_list));
ct::CTVerifyResult result;
EXPECT_NE(OK, verifier_->Verify(chain_, sct_list, "", &result));
EXPECT_EQ(1U, result.unknown_logs_scts.size());
}
} // namespace
} // namespace net
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