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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/quic/test_tools/crypto_test_utils.h"
#include "base/callback_helpers.h"
#include "base/logging.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/stl_util.h"
#include "base/strings/stringprintf.h"
#include "net/base/net_errors.h"
#include "net/base/test_completion_callback.h"
#include "net/base/test_data_directory.h"
#include "net/cert/cert_status_flags.h"
#include "net/cert/cert_verifier.h"
#include "net/cert/cert_verify_result.h"
#include "net/cert/ct_verifier.h"
#include "net/cert/mock_cert_verifier.h"
#include "net/cert/multi_log_ct_verifier.h"
#include "net/cert/test_root_certs.h"
#include "net/cert/x509_certificate.h"
#include "net/cert/x509_util.h"
#include "net/http/transport_security_state.h"
#include "net/log/net_log.h"
#include "net/quic/crypto/crypto_utils.h"
#include "net/quic/crypto/proof_source_chromium.h"
#include "net/quic/crypto/proof_verifier_chromium.h"
#include "net/ssl/ssl_config_service.h"
#include "net/test/cert_test_util.h"
using base::StringPiece;
using base::StringPrintf;
using std::string;
using std::vector;
namespace net {
namespace test {
namespace {
class TestProofVerifierChromium : public ProofVerifierChromium {
public:
TestProofVerifierChromium(
scoped_ptr<CertVerifier> cert_verifier,
scoped_ptr<TransportSecurityState> transport_security_state,
scoped_ptr<CTVerifier> cert_transparency_verifier,
const std::string& cert_file)
: ProofVerifierChromium(cert_verifier.get(),
nullptr,
transport_security_state.get(),
cert_transparency_verifier.get()),
cert_verifier_(cert_verifier.Pass()),
transport_security_state_(transport_security_state.Pass()),
cert_transparency_verifier_(cert_transparency_verifier.Pass()) {
// Load and install the root for the validated chain.
scoped_refptr<X509Certificate> root_cert =
ImportCertFromFile(GetTestCertsDirectory(), cert_file);
scoped_root_.Reset(root_cert.get());
}
~TestProofVerifierChromium() override {}
CertVerifier* cert_verifier() { return cert_verifier_.get(); }
private:
ScopedTestRoot scoped_root_;
scoped_ptr<CertVerifier> cert_verifier_;
scoped_ptr<TransportSecurityState> transport_security_state_;
scoped_ptr<CTVerifier> cert_transparency_verifier_;
};
const char kSignature[] = "signature";
const char kSCT[] = "CryptoServerTests";
class FakeProofSource : public ProofSource {
public:
FakeProofSource() {}
~FakeProofSource() override {}
// ProofSource interface
bool Initialize(const base::FilePath& cert_path,
const base::FilePath& key_path,
const base::FilePath& sct_path) {
std::string cert_data;
if (!base::ReadFileToString(cert_path, &cert_data)) {
DLOG(FATAL) << "Unable to read certificates.";
return false;
}
CertificateList certs_in_file =
X509Certificate::CreateCertificateListFromBytes(
cert_data.data(), cert_data.size(), X509Certificate::FORMAT_AUTO);
if (certs_in_file.empty()) {
DLOG(FATAL) << "No certificates.";
return false;
}
for (const scoped_refptr<X509Certificate>& cert : certs_in_file) {
std::string der_encoded_cert;
if (!X509Certificate::GetDEREncoded(cert->os_cert_handle(),
&der_encoded_cert)) {
return false;
}
certificates_.push_back(der_encoded_cert);
}
return true;
}
bool GetProof(const IPAddressNumber& server_ip,
const std::string& hostname,
const std::string& server_config,
bool ecdsa_ok,
const std::vector<std::string>** out_certs,
std::string* out_signature,
std::string* out_leaf_cert_sct) override {
out_signature->assign(kSignature);
*out_certs = &certificates_;
*out_leaf_cert_sct = kSCT;
return true;
}
private:
std::vector<std::string> certificates_;
DISALLOW_COPY_AND_ASSIGN(FakeProofSource);
};
class FakeProofVerifier : public TestProofVerifierChromium {
public:
FakeProofVerifier(scoped_ptr<CertVerifier> cert_verifier,
scoped_ptr<TransportSecurityState> transport_security_state,
scoped_ptr<CTVerifier> cert_transparency_verifier,
const std::string& cert_file)
: TestProofVerifierChromium(cert_verifier.Pass(),
transport_security_state.Pass(),
cert_transparency_verifier.Pass(),
cert_file) {}
~FakeProofVerifier() override {}
// ProofVerifier interface
QuicAsyncStatus VerifyProof(const std::string& hostname,
const std::string& server_config,
const std::vector<std::string>& certs,
const std::string& cert_sct,
const std::string& signature,
const ProofVerifyContext* verify_context,
std::string* error_details,
scoped_ptr<ProofVerifyDetails>* verify_details,
ProofVerifierCallback* callback) override {
error_details->clear();
scoped_ptr<ProofVerifyDetailsChromium> verify_details_chromium(
new ProofVerifyDetailsChromium);
DCHECK(!certs.empty());
// Convert certs to X509Certificate.
vector<StringPiece> cert_pieces(certs.size());
for (unsigned i = 0; i < certs.size(); i++) {
cert_pieces[i] = base::StringPiece(certs[i]);
}
scoped_refptr<X509Certificate> x509_cert =
X509Certificate::CreateFromDERCertChain(cert_pieces);
if (!x509_cert.get()) {
*error_details = "Failed to create certificate chain";
verify_details_chromium->cert_verify_result.cert_status =
CERT_STATUS_INVALID;
*verify_details = verify_details_chromium.Pass();
return QUIC_FAILURE;
}
const ProofVerifyContextChromium* chromium_context =
reinterpret_cast<const ProofVerifyContextChromium*>(verify_context);
scoped_ptr<CertVerifier::Request> cert_verifier_request_;
TestCompletionCallback test_callback;
int result = cert_verifier()->Verify(
x509_cert.get(), hostname, std::string(),
chromium_context->cert_verify_flags,
SSLConfigService::GetCRLSet().get(),
&verify_details_chromium->cert_verify_result, test_callback.callback(),
&cert_verifier_request_, chromium_context->net_log);
if (result != OK) {
std::string error_string = ErrorToString(result);
*error_details = StringPrintf("Failed to verify certificate chain: %s",
error_string.c_str());
verify_details_chromium->cert_verify_result.cert_status =
CERT_STATUS_INVALID;
*verify_details = verify_details_chromium.Pass();
return QUIC_FAILURE;
}
if (signature != kSignature) {
*error_details = "Invalid proof";
verify_details_chromium->cert_verify_result.cert_status =
CERT_STATUS_INVALID;
*verify_details = verify_details_chromium.Pass();
return QUIC_FAILURE;
}
*verify_details = verify_details_chromium.Pass();
return QUIC_SUCCESS;
}
private:
DISALLOW_COPY_AND_ASSIGN(FakeProofVerifier);
};
} // namespace
// static
ProofSource* CryptoTestUtils::ProofSourceForTesting() {
#if defined(USE_OPENSSL)
ProofSourceChromium* source = new ProofSourceChromium();
#else
FakeProofSource* source = new FakeProofSource();
#endif
base::FilePath certs_dir = GetTestCertsDirectory();
CHECK(source->Initialize(
certs_dir.AppendASCII("quic_chain.crt"),
certs_dir.AppendASCII("quic_test.example.com.key.pkcs8"),
certs_dir.AppendASCII("quic_test.example.com.key.sct")));
return source;
}
// static
ProofVerifier* ProofVerifierForTestingInternal(bool use_real_proof_verifier) {
// TODO(rch): use a real cert verifier?
scoped_ptr<MockCertVerifier> cert_verifier(new MockCertVerifier());
net::CertVerifyResult verify_result;
verify_result.verified_cert =
ImportCertFromFile(GetTestCertsDirectory(), "quic_test.example.com.crt");
cert_verifier->AddResultForCertAndHost(verify_result.verified_cert.get(),
"test.example.com", verify_result, OK);
verify_result.verified_cert = ImportCertFromFile(
GetTestCertsDirectory(), "quic_test_ecc.example.com.crt");
cert_verifier->AddResultForCertAndHost(verify_result.verified_cert.get(),
"test.example.com", verify_result, OK);
if (use_real_proof_verifier) {
return new TestProofVerifierChromium(
cert_verifier.Pass(), make_scoped_ptr(new TransportSecurityState),
make_scoped_ptr(new MultiLogCTVerifier), "quic_root.crt");
}
#if defined(USE_OPENSSL)
return new TestProofVerifierChromium(
cert_verifier.Pass(), make_scoped_ptr(new TransportSecurityState),
make_scoped_ptr(new MultiLogCTVerifier), "quic_root.crt");
#else
return new FakeProofVerifier(
cert_verifier.Pass(), make_scoped_ptr(new TransportSecurityState),
make_scoped_ptr(new MultiLogCTVerifier), "quic_root.crt");
#endif
}
// static
ProofVerifier* CryptoTestUtils::ProofVerifierForTesting() {
return ProofVerifierForTestingInternal(/*use_real_proof_verifier=*/false);
}
// static
ProofVerifier* CryptoTestUtils::RealProofVerifierForTesting() {
return ProofVerifierForTestingInternal(/*use_real_proof_verifier=*/true);
}
// static
ProofVerifyContext* CryptoTestUtils::ProofVerifyContextForTesting() {
return new ProofVerifyContextChromium(/*cert_verify_flags=*/0, BoundNetLog());
}
} // namespace test
} // namespace net
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