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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/ssl/client_cert_store_nss.h"
#include <cert.h>
#include <certt.h>
#include <pk11pub.h>
#include <memory>
#include <string>
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/memory/ref_counted.h"
#include "base/run_loop.h"
#include "base/test/task_environment.h"
#include "crypto/nss_util.h"
#include "crypto/scoped_test_nss_db.h"
#include "net/cert/pem.h"
#include "net/cert/x509_certificate.h"
#include "net/cert/x509_util_nss.h"
#include "net/ssl/client_cert_identity_test_util.h"
#include "net/ssl/client_cert_store_unittest-inl.h"
#include "net/ssl/ssl_cert_request_info.h"
#include "net/ssl/ssl_private_key.h"
#include "net/ssl/ssl_private_key_test_util.h"
#include "net/test/cert_test_util.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/boringssl/src/include/openssl/ssl.h"
namespace net {
namespace {
void SaveIdentitiesAndQuitCallback(ClientCertIdentityList* out_identities,
base::OnceClosure quit_closure,
ClientCertIdentityList in_identities) {
*out_identities = std::move(in_identities);
std::move(quit_closure).Run();
}
void SavePrivateKeyAndQuitCallback(scoped_refptr<net::SSLPrivateKey>* out_key,
base::OnceClosure quit_closure,
scoped_refptr<net::SSLPrivateKey> in_key) {
*out_key = std::move(in_key);
std::move(quit_closure).Run();
}
} // namespace
class ClientCertStoreNSSTestDelegate {
public:
ClientCertStoreNSSTestDelegate() = default;
bool SelectClientCerts(const CertificateList& input_certs,
const SSLCertRequestInfo& cert_request_info,
ClientCertIdentityList* selected_identities) {
*selected_identities =
FakeClientCertIdentityListFromCertificateList(input_certs);
// Filters |selected_identities| using the logic being used to filter the
// system store when GetClientCerts() is called.
crypto::EnsureNSSInit();
ClientCertStoreNSS::FilterCertsOnWorkerThread(selected_identities,
cert_request_info);
return true;
}
};
INSTANTIATE_TYPED_TEST_SUITE_P(NSS,
ClientCertStoreTest,
ClientCertStoreNSSTestDelegate);
// Tests that ClientCertStoreNSS attempts to build a certificate chain by
// querying NSS before return a certificate.
TEST(ClientCertStoreNSSTest, BuildsCertificateChain) {
base::test::TaskEnvironment task_environment;
// Set up a test DB and import client_1.pem and client_1_ca.pem.
crypto::ScopedTestNSSDB test_db;
scoped_refptr<X509Certificate> client_1(ImportClientCertAndKeyFromFile(
GetTestCertsDirectory(), "client_1.pem", "client_1.pk8", test_db.slot()));
ASSERT_TRUE(client_1.get());
scoped_refptr<X509Certificate> client_1_ca(
ImportCertFromFile(GetTestCertsDirectory(), "client_1_ca.pem"));
ASSERT_TRUE(client_1_ca.get());
ASSERT_TRUE(ImportClientCertToSlot(client_1_ca, test_db.slot()));
std::string pkcs8_key;
ASSERT_TRUE(base::ReadFileToString(
GetTestCertsDirectory().AppendASCII("client_1.pk8"), &pkcs8_key));
auto store = std::make_unique<ClientCertStoreNSS>(
ClientCertStoreNSS::PasswordDelegateFactory());
// These test keys are RSA keys.
std::vector<uint16_t> expected = SSLPrivateKey::DefaultAlgorithmPreferences(
EVP_PKEY_RSA, true /* supports PSS */);
{
// Request certificates matching B CA, |client_1|'s issuer.
auto request = base::MakeRefCounted<SSLCertRequestInfo>();
request->cert_authorities.emplace_back(
reinterpret_cast<const char*>(kAuthority1DN), sizeof(kAuthority1DN));
ClientCertIdentityList selected_identities;
base::RunLoop loop;
store->GetClientCerts(
*request.get(),
base::BindOnce(SaveIdentitiesAndQuitCallback, &selected_identities,
loop.QuitClosure()));
loop.Run();
// The result be |client_1| with no intermediates.
ASSERT_EQ(1u, selected_identities.size());
scoped_refptr<X509Certificate> selected_cert =
selected_identities[0]->certificate();
EXPECT_TRUE(x509_util::CryptoBufferEqual(client_1->cert_buffer(),
selected_cert->cert_buffer()));
ASSERT_EQ(0u, selected_cert->intermediate_buffers().size());
scoped_refptr<SSLPrivateKey> ssl_private_key;
base::RunLoop key_loop;
selected_identities[0]->AcquirePrivateKey(
base::BindOnce(SavePrivateKeyAndQuitCallback, &ssl_private_key,
key_loop.QuitClosure()));
key_loop.Run();
ASSERT_TRUE(ssl_private_key);
EXPECT_EQ(expected, ssl_private_key->GetAlgorithmPreferences());
TestSSLPrivateKeyMatches(ssl_private_key.get(), pkcs8_key);
}
{
// Request certificates matching C Root CA, |client_1_ca|'s issuer.
auto request = base::MakeRefCounted<SSLCertRequestInfo>();
request->cert_authorities.emplace_back(
reinterpret_cast<const char*>(kAuthorityRootDN),
sizeof(kAuthorityRootDN));
ClientCertIdentityList selected_identities;
base::RunLoop loop;
store->GetClientCerts(
*request.get(),
base::BindOnce(SaveIdentitiesAndQuitCallback, &selected_identities,
loop.QuitClosure()));
loop.Run();
// The result be |client_1| with |client_1_ca| as an intermediate.
ASSERT_EQ(1u, selected_identities.size());
scoped_refptr<X509Certificate> selected_cert =
selected_identities[0]->certificate();
EXPECT_TRUE(x509_util::CryptoBufferEqual(client_1->cert_buffer(),
selected_cert->cert_buffer()));
ASSERT_EQ(1u, selected_cert->intermediate_buffers().size());
EXPECT_TRUE(x509_util::CryptoBufferEqual(
client_1_ca->cert_buffer(),
selected_cert->intermediate_buffers()[0].get()));
scoped_refptr<SSLPrivateKey> ssl_private_key;
base::RunLoop key_loop;
selected_identities[0]->AcquirePrivateKey(
base::BindOnce(SavePrivateKeyAndQuitCallback, &ssl_private_key,
key_loop.QuitClosure()));
key_loop.Run();
ASSERT_TRUE(ssl_private_key);
EXPECT_EQ(expected, ssl_private_key->GetAlgorithmPreferences());
TestSSLPrivateKeyMatches(ssl_private_key.get(), pkcs8_key);
}
}
TEST(ClientCertStoreNSSTest, SubjectPrintableStringContainingUTF8) {
base::test::TaskEnvironment task_environment;
crypto::ScopedTestNSSDB test_db;
base::FilePath certs_dir =
GetTestNetDataDirectory().AppendASCII("parse_certificate_unittest");
ASSERT_TRUE(ImportSensitiveKeyFromFile(
certs_dir, "v3_certificate_template.pk8", test_db.slot()));
std::string pkcs8_key;
ASSERT_TRUE(base::ReadFileToString(
certs_dir.AppendASCII("v3_certificate_template.pk8"), &pkcs8_key));
std::string file_data;
ASSERT_TRUE(base::ReadFileToString(
certs_dir.AppendASCII(
"subject_printable_string_containing_utf8_client_cert.pem"),
&file_data));
net::PEMTokenizer pem_tokenizer(file_data, {"CERTIFICATE"});
ASSERT_TRUE(pem_tokenizer.GetNext());
std::string cert_der(pem_tokenizer.data());
ASSERT_FALSE(pem_tokenizer.GetNext());
ScopedCERTCertificate cert(x509_util::CreateCERTCertificateFromBytes(
base::as_bytes(base::make_span(cert_der))));
ASSERT_TRUE(cert);
ASSERT_TRUE(ImportClientCertToSlot(cert.get(), test_db.slot()));
auto store = std::make_unique<ClientCertStoreNSS>(
ClientCertStoreNSS::PasswordDelegateFactory());
// These test keys are RSA keys.
std::vector<uint16_t> expected = SSLPrivateKey::DefaultAlgorithmPreferences(
EVP_PKEY_RSA, true /* supports PSS */);
constexpr uint8_t kAuthorityDN[] = {
0x30, 0x45, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13,
0x02, 0x41, 0x55, 0x31, 0x13, 0x30, 0x11, 0x06, 0x03, 0x55, 0x04, 0x08,
0x0c, 0x0a, 0x53, 0x6f, 0x6d, 0x65, 0x2d, 0x53, 0x74, 0x61, 0x74, 0x65,
0x31, 0x21, 0x30, 0x1f, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x0c, 0x18, 0x49,
0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x20, 0x57, 0x69, 0x64, 0x67,
0x69, 0x74, 0x73, 0x20, 0x50, 0x74, 0x79, 0x20, 0x4c, 0x74, 0x64};
auto request = base::MakeRefCounted<SSLCertRequestInfo>();
request->cert_authorities.emplace_back(
reinterpret_cast<const char*>(kAuthorityDN), sizeof(kAuthorityDN));
ClientCertIdentityList selected_identities;
base::RunLoop loop;
store->GetClientCerts(
*request.get(), base::BindOnce(SaveIdentitiesAndQuitCallback,
&selected_identities, loop.QuitClosure()));
loop.Run();
// The result be |cert| with no intermediates.
ASSERT_EQ(1u, selected_identities.size());
scoped_refptr<X509Certificate> selected_cert =
selected_identities[0]->certificate();
EXPECT_TRUE(x509_util::IsSameCertificate(cert.get(), selected_cert.get()));
EXPECT_EQ(0u, selected_cert->intermediate_buffers().size());
scoped_refptr<SSLPrivateKey> ssl_private_key;
base::RunLoop key_loop;
selected_identities[0]->AcquirePrivateKey(base::BindOnce(
SavePrivateKeyAndQuitCallback, &ssl_private_key, key_loop.QuitClosure()));
key_loop.Run();
ASSERT_TRUE(ssl_private_key);
EXPECT_EQ(expected, ssl_private_key->GetAlgorithmPreferences());
TestSSLPrivateKeyMatches(ssl_private_key.get(), pkcs8_key);
}
// TODO(mattm): is it possible to unittest slot unlocking?
} // namespace net
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