Revert of [cast_channel] Move cast_channel related files from //extensions to //components

extensions/browser/api/cast_channel/cast_auth_util_unittest.cc

Index: extensions/browser/api/cast_channel/cast_auth_util_unittest.cc
diff --git a/extensions/browser/api/cast_channel/cast_auth_util_unittest.cc b/extensions/browser/api/cast_channel/cast_auth_util_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b658068558b4e3f9daeb7218df6c955f73aa24be
--- /dev/null
+++ b/extensions/browser/api/cast_channel/cast_auth_util_unittest.cc
@@ -0,0 +1,339 @@
+// Copyright 2014 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 "extensions/browser/api/cast_channel/cast_auth_util.h"
+
+#include <string>
+
+#include "base/macros.h"
+#include "base/test/scoped_feature_list.h"
+#include "base/time/time.h"
+#include "components/cast_certificate/cast_cert_validator.h"
+#include "components/cast_certificate/cast_cert_validator_test_helpers.h"
+#include "components/cast_certificate/cast_crl.h"
+#include "components/cast_certificate/proto/test_suite.pb.h"
+#include "extensions/common/api/cast_channel/cast_channel.pb.h"
+#include "net/cert/internal/trust_store_in_memory.h"
+#include "net/cert/x509_certificate.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace extensions {
+namespace api {
+namespace cast_channel {
+namespace {
+
+class CastAuthUtilTest : public testing::Test {
+ public:
+  CastAuthUtilTest() {}
+  ~CastAuthUtilTest() override {}
+
+  void SetUp() override {}
+
+ protected:
+  static AuthResponse CreateAuthResponse(std::string* signed_data) {
+    auto chain = cast_certificate::testing::ReadCertificateChainFromFile(
+        "certificates/chromecast_gen1.pem");
+    CHECK(!chain.empty());
+
+    auto signature_data = cast_certificate::testing::ReadSignatureTestData(
+        "signeddata/2ZZBG9_FA8FCA3EF91A.pem");
+
+    AuthResponse response;
+
+    response.set_client_auth_certificate(chain[0]);
+    for (size_t i = 1; i < chain.size(); ++i)
+      response.add_intermediate_certificate(chain[i]);
+
+    response.set_signature(signature_data.signature_sha1);
+    *signed_data = signature_data.message;
+
+    return response;
+  }
+
+  // Mangles a string by inverting the first byte.
+  static void MangleString(std::string* str) { (*str)[0] = ~(*str)[0]; }
+};
+
+// Note on expiration: VerifyCredentials() depends on the system clock. In
+// practice this shouldn't be a problem though since the certificate chain
+// being verified doesn't expire until 2032!
+TEST_F(CastAuthUtilTest, VerifySuccess) {
+  std::string signed_data;
+  AuthResponse auth_response = CreateAuthResponse(&signed_data);
+  base::Time now = base::Time::Now();
+  AuthResult result = VerifyCredentialsForTest(
+      auth_response, signed_data, cast_certificate::CRLPolicy::CRL_OPTIONAL,
+      nullptr, nullptr, now);
+  EXPECT_TRUE(result.success());
+  EXPECT_EQ(AuthResult::POLICY_NONE, result.channel_policies);
+}
+
+TEST_F(CastAuthUtilTest, VerifyBadCA) {
+  std::string signed_data;
+  AuthResponse auth_response = CreateAuthResponse(&signed_data);
+  MangleString(auth_response.mutable_intermediate_certificate(0));
+  AuthResult result = VerifyCredentials(auth_response, signed_data);
+  EXPECT_FALSE(result.success());
+  EXPECT_EQ(AuthResult::ERROR_CERT_NOT_SIGNED_BY_TRUSTED_CA, result.error_type);
+}
+
+TEST_F(CastAuthUtilTest, VerifyBadClientAuthCert) {
+  std::string signed_data;
+  AuthResponse auth_response = CreateAuthResponse(&signed_data);
+  MangleString(auth_response.mutable_client_auth_certificate());
+  AuthResult result = VerifyCredentials(auth_response, signed_data);
+  EXPECT_FALSE(result.success());
+  // TODO(eroman): Not quite right of an error.
+  EXPECT_EQ(AuthResult::ERROR_CERT_NOT_SIGNED_BY_TRUSTED_CA, result.error_type);
+}
+
+TEST_F(CastAuthUtilTest, VerifyBadSignature) {
+  std::string signed_data;
+  AuthResponse auth_response = CreateAuthResponse(&signed_data);
+  MangleString(auth_response.mutable_signature());
+  AuthResult result = VerifyCredentials(auth_response, signed_data);
+  EXPECT_FALSE(result.success());
+  EXPECT_EQ(AuthResult::ERROR_SIGNED_BLOBS_MISMATCH, result.error_type);
+}
+
+TEST_F(CastAuthUtilTest, VerifyBadPeerCert) {
+  std::string signed_data;
+  AuthResponse auth_response = CreateAuthResponse(&signed_data);
+  MangleString(&signed_data);
+  AuthResult result = VerifyCredentials(auth_response, signed_data);
+  EXPECT_FALSE(result.success());
+  EXPECT_EQ(AuthResult::ERROR_SIGNED_BLOBS_MISMATCH, result.error_type);
+}
+
+TEST_F(CastAuthUtilTest, VerifySenderNonceMatch) {
+  base::test::ScopedFeatureList scoped_feature_list;
+  scoped_feature_list.InitAndEnableFeature(
+      base::Feature{"CastNonceEnforced", base::FEATURE_DISABLED_BY_DEFAULT});
+  AuthContext context = AuthContext::Create();
+  AuthResult result = context.VerifySenderNonce(context.nonce());
+  EXPECT_TRUE(result.success());
+}
+
+TEST_F(CastAuthUtilTest, VerifySenderNonceMismatch) {
+  base::test::ScopedFeatureList scoped_feature_list;
+  scoped_feature_list.InitAndEnableFeature(
+      base::Feature{"CastNonceEnforced", base::FEATURE_DISABLED_BY_DEFAULT});
+  AuthContext context = AuthContext::Create();
+  std::string received_nonce = "test2";
+  EXPECT_NE(received_nonce, context.nonce());
+  AuthResult result = context.VerifySenderNonce(received_nonce);
+  EXPECT_FALSE(result.success());
+  EXPECT_EQ(AuthResult::ERROR_SENDER_NONCE_MISMATCH, result.error_type);
+}
+
+TEST_F(CastAuthUtilTest, VerifySenderNonceMissing) {
+  base::test::ScopedFeatureList scoped_feature_list;
+  scoped_feature_list.InitAndEnableFeature(
+      base::Feature{"CastNonceEnforced", base::FEATURE_DISABLED_BY_DEFAULT});
+  AuthContext context = AuthContext::Create();
+  std::string received_nonce = "";
+  EXPECT_FALSE(context.nonce().empty());
+  AuthResult result = context.VerifySenderNonce(received_nonce);
+  EXPECT_FALSE(result.success());
+  EXPECT_EQ(AuthResult::ERROR_SENDER_NONCE_MISMATCH, result.error_type);
+}
+
+TEST_F(CastAuthUtilTest, VerifyTLSCertificateSuccess) {
+  auto tls_cert_der = cast_certificate::testing::ReadCertificateChainFromFile(
+      "certificates/test_tls_cert.pem");
+
+  scoped_refptr<net::X509Certificate> tls_cert =
+      net::X509Certificate::CreateFromBytes(tls_cert_der[0].data(),
+                                            tls_cert_der[0].size());
+  std::string peer_cert_der;
+  AuthResult result =
+      VerifyTLSCertificate(*tls_cert, &peer_cert_der, tls_cert->valid_start());
+  EXPECT_TRUE(result.success());
+}
+
+TEST_F(CastAuthUtilTest, VerifyTLSCertificateTooEarly) {
+  auto tls_cert_der = cast_certificate::testing::ReadCertificateChainFromFile(
+      "certificates/test_tls_cert.pem");
+
+  scoped_refptr<net::X509Certificate> tls_cert =
+      net::X509Certificate::CreateFromBytes(tls_cert_der[0].data(),
+                                            tls_cert_der[0].size());
+  std::string peer_cert_der;
+  AuthResult result = VerifyTLSCertificate(
+      *tls_cert, &peer_cert_der,
+      tls_cert->valid_start() - base::TimeDelta::FromSeconds(1));
+  EXPECT_FALSE(result.success());
+  EXPECT_EQ(AuthResult::ERROR_TLS_CERT_VALID_START_DATE_IN_FUTURE,
+            result.error_type);
+}
+
+TEST_F(CastAuthUtilTest, VerifyTLSCertificateTooLate) {
+  auto tls_cert_der = cast_certificate::testing::ReadCertificateChainFromFile(
+      "certificates/test_tls_cert.pem");
+
+  scoped_refptr<net::X509Certificate> tls_cert =
+      net::X509Certificate::CreateFromBytes(tls_cert_der[0].data(),
+                                            tls_cert_der[0].size());
+  std::string peer_cert_der;
+  AuthResult result = VerifyTLSCertificate(
+      *tls_cert, &peer_cert_der,
+      tls_cert->valid_expiry() + base::TimeDelta::FromSeconds(2));
+  EXPECT_FALSE(result.success());
+  EXPECT_EQ(AuthResult::ERROR_TLS_CERT_EXPIRED, result.error_type);
+}
+
+// Indicates the expected result of test step's verification.
+enum TestStepResult {
+  RESULT_SUCCESS,
+  RESULT_FAIL,
+};
+
+// Verifies that the certificate chain provided is not revoked according to
+// the provided Cast CRL at |verification_time|.
+// The provided CRL is verified at |verification_time|.
+// If |crl_required| is set, then a valid Cast CRL must be provided.
+// Otherwise, a missing CRL is be ignored.
+AuthResult TestVerifyRevocation(
+    const std::vector<std::string>& certificate_chain,
+    const std::string& crl_bundle,
+    const base::Time& verification_time,
+    bool crl_required,
+    net::TrustStore* cast_trust_store,
+    net::TrustStore* crl_trust_store) {
+  AuthResponse response;
+
+  if (certificate_chain.size() > 0) {
+    response.set_client_auth_certificate(certificate_chain[0]);
+    for (size_t i = 1; i < certificate_chain.size(); ++i)
+      response.add_intermediate_certificate(certificate_chain[i]);
+  }
+
+  response.set_crl(crl_bundle);
+
+  cast_certificate::CRLPolicy crl_policy =
+      cast_certificate::CRLPolicy::CRL_REQUIRED;
+  if (!crl_required && crl_bundle.empty())
+    crl_policy = cast_certificate::CRLPolicy::CRL_OPTIONAL;
+  AuthResult result =
+      VerifyCredentialsForTest(response, "", crl_policy, cast_trust_store,
+                               crl_trust_store, verification_time);
+  // This test doesn't set the signature so it will just fail there.
+  EXPECT_FALSE(result.success());
+  return result;
+}
+
+// Runs a single test case.
+bool RunTest(const cast_certificate::DeviceCertTest& test_case) {
+  std::unique_ptr<net::TrustStore> crl_trust_store;
+  std::unique_ptr<net::TrustStore> cast_trust_store;
+  if (test_case.use_test_trust_anchors()) {
+    crl_trust_store = cast_certificate::testing::CreateTrustStoreFromFile(
+        "certificates/cast_crl_test_root_ca.pem");
+    cast_trust_store = cast_certificate::testing::CreateTrustStoreFromFile(
+        "certificates/cast_test_root_ca.pem");
+
+    EXPECT_TRUE(crl_trust_store.get());
+    EXPECT_TRUE(cast_trust_store.get());
+  }
+
+  std::vector<std::string> certificate_chain;
+  for (auto const& cert : test_case.der_cert_path()) {
+    certificate_chain.push_back(cert);
+  }
+
+  // CastAuthUtil verifies the CRL at the same time as the certificate.
+  base::Time verification_time;
+  uint64_t cert_verify_time = test_case.cert_verification_time_seconds();
+  if (cert_verify_time) {
+    verification_time = cast_certificate::testing::ConvertUnixTimestampSeconds(
+        cert_verify_time);
+  } else {
+    verification_time = cast_certificate::testing::ConvertUnixTimestampSeconds(
+        test_case.crl_verification_time_seconds());
+  }
+
+  std::string crl_bundle = test_case.crl_bundle();
+  AuthResult result;
+  switch (test_case.expected_result()) {
+    case cast_certificate::PATH_VERIFICATION_FAILED:
+      result = TestVerifyRevocation(
+          certificate_chain, crl_bundle, verification_time, false,
+          cast_trust_store.get(), crl_trust_store.get());
+      EXPECT_EQ(result.error_type,
+                AuthResult::ERROR_CERT_NOT_SIGNED_BY_TRUSTED_CA);
+      return result.error_type ==
+             AuthResult::ERROR_CERT_NOT_SIGNED_BY_TRUSTED_CA;
+    case cast_certificate::CRL_VERIFICATION_FAILED:
+    // Fall-through intended.
+    case cast_certificate::REVOCATION_CHECK_FAILED_WITHOUT_CRL:
+      result = TestVerifyRevocation(
+          certificate_chain, crl_bundle, verification_time, true,
+          cast_trust_store.get(), crl_trust_store.get());
+      EXPECT_EQ(result.error_type, AuthResult::ERROR_CRL_INVALID);
+      return result.error_type == AuthResult::ERROR_CRL_INVALID;
+    case cast_certificate::CRL_EXPIRED_AFTER_INITIAL_VERIFICATION:
+      // By-pass this test because CRL is always verified at the time the
+      // certificate is verified.
+      return true;
+    case cast_certificate::REVOCATION_CHECK_FAILED:
+      result = TestVerifyRevocation(
+          certificate_chain, crl_bundle, verification_time, true,
+          cast_trust_store.get(), crl_trust_store.get());
+      EXPECT_EQ(result.error_type, AuthResult::ERROR_CERT_REVOKED);
+      return result.error_type == AuthResult::ERROR_CERT_REVOKED;
+    case cast_certificate::SUCCESS:
+      result = TestVerifyRevocation(
+          certificate_chain, crl_bundle, verification_time, false,
+          cast_trust_store.get(), crl_trust_store.get());
+      EXPECT_EQ(result.error_type, AuthResult::ERROR_SIGNED_BLOBS_MISMATCH);
+      return result.error_type == AuthResult::ERROR_SIGNED_BLOBS_MISMATCH;
+    case UNSPECIFIED:
+      return false;
+  }
+  return false;
+}
+
+// Parses the provided test suite provided in wire-format proto.
+// Each test contains the inputs and the expected output.
+// To see the description of the test, execute the test.
+// These tests are generated by a test generator in google3.
+void RunTestSuite(const std::string& test_suite_file_name) {
+  std::string testsuite_raw =
+      cast_certificate::testing::ReadTestFileToString(test_suite_file_name);
+  cast_certificate::DeviceCertTestSuite test_suite;
+  EXPECT_TRUE(test_suite.ParseFromString(testsuite_raw));
+  uint16_t success = 0;
+  uint16_t failed = 0;
+  std::vector<std::string> failed_tests;
+
+  for (auto const& test_case : test_suite.tests()) {
+    LOG(INFO) << "[ RUN      ] " << test_case.description();
+    bool result = RunTest(test_case);
+    EXPECT_TRUE(result);
+    if (!result) {
+      LOG(INFO) << "[  FAILED  ] " << test_case.description();
+      ++failed;
+      failed_tests.push_back(test_case.description());
+    } else {
+      LOG(INFO) << "[  PASSED  ] " << test_case.description();
+      ++success;
+    }
+  }
+  LOG(INFO) << "[  PASSED  ] " << success << " test(s).";
+  if (failed) {
+    LOG(INFO) << "[  FAILED  ] " << failed << " test(s), listed below:";
+    for (const auto& failed_test : failed_tests) {
+      LOG(INFO) << "[  FAILED  ] " << failed_test;
+    }
+  }
+}
+
+TEST_F(CastAuthUtilTest, CRLTestSuite) {
+  RunTestSuite("testsuite/testsuite1.pb");
+}
+
+}  // namespace
+}  // namespace cast_channel
+}  // namespace api
+}  // namespace extensions