chrome/browser/policy/cloud/cloud_policy_browsertest.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/callback.h"
   6 #include "base/command_line.h"
   7 #include "base/files/file_path.h"
   8 #include "base/files/file_util.h"
   9 #include "base/files/scoped_temp_dir.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/path_service.h"
  12 #include "base/prefs/pref_service.h"
  13 #include "base/run_loop.h"
  14 #include "base/strings/stringprintf.h"
  15 #include "base/time/time.h"
  16 #include "chrome/browser/browser_process.h"
  17 #include "chrome/browser/chrome_notification_types.h"
  18 #include "chrome/browser/invalidation/fake_invalidation_service.h"
  19 #include "chrome/browser/invalidation/profile_invalidation_provider_factory.h"
  20 #include "chrome/browser/policy/profile_policy_connector.h"
  21 #include "chrome/browser/policy/profile_policy_connector_factory.h"
  22 #include "chrome/browser/policy/test/local_policy_test_server.h"
  23 #include "chrome/browser/profiles/profile.h"
  24 #include "chrome/browser/ui/browser.h"
  25 #include "chrome/test/base/in_process_browser_test.h"
  26 #include "components/invalidation/invalidation.h"
  27 #include "components/invalidation/invalidation_service.h"
  28 #include "components/invalidation/profile_invalidation_provider.h"
  29 #include "components/keyed_service/core/keyed_service.h"
  30 #include "components/policy/core/browser/browser_policy_connector.h"
  31 #include "components/policy/core/common/cloud/cloud_policy_client.h"
  32 #include "components/policy/core/common/cloud/cloud_policy_constants.h"
  33 #include "components/policy/core/common/cloud/mock_cloud_policy_client.h"
  34 #include "components/policy/core/common/external_data_fetcher.h"
  35 #include "components/policy/core/common/policy_map.h"
  36 #include "components/policy/core/common/policy_service.h"
  37 #include "components/policy/core/common/policy_switches.h"
  38 #include "components/policy/core/common/policy_test_utils.h"
  39 #include "content/public/browser/notification_service.h"
  40 #include "content/public/browser/notification_source.h"
  41 #include "content/public/test/test_utils.h"
  42 #include "net/url_request/url_request_context_getter.h"
  43 #include "policy/policy_constants.h"
  44 #include "policy/proto/chrome_settings.pb.h"
  45 #include "policy/proto/cloud_policy.pb.h"
  46 #include "policy/proto/device_management_backend.pb.h"
  47 #include "testing/gmock/include/gmock/gmock.h"
  48 #include "testing/gtest/include/gtest/gtest.h"
  49 #include "url/gurl.h"
  50
  51 #if defined(OS_CHROMEOS)
  52 #include "chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.h"
  53 #include "chrome/browser/chromeos/policy/user_cloud_policy_manager_factory_chromeos.h"
  54 #include "chromeos/chromeos_paths.h"
  55 #include "chromeos/dbus/cryptohome_client.h"
  56 #include "chromeos/login/user_names.h"
  57 #else
  58 #include "chrome/browser/policy/cloud/user_cloud_policy_manager_factory.h"
  59 #include "chrome/browser/signin/signin_manager_factory.h"
  60 #include "components/policy/core/common/cloud/user_cloud_policy_manager.h"
  61 #include "components/signin/core/browser/signin_manager.h"
  62 #endif
  63
  64 using testing::AnyNumber;
  65 using testing::InvokeWithoutArgs;
  66 using testing::Mock;
  67 using testing::Return;
  68 using testing::_;
  69
  70 namespace content {
  71 class BrowserContext;
  72 }
  73
  74 namespace em = enterprise_management;
  75
  76 namespace policy {
  77
  78 namespace {
  79
  80 KeyedService* BuildFakeProfileInvalidationProvider(
  81     content::BrowserContext* context) {
  82   return new invalidation::ProfileInvalidationProvider(
  83       scoped_ptr<invalidation::InvalidationService>(
  84           new invalidation::FakeInvalidationService));
  85 }
  86
  87 const char* GetTestUser() {
  88 #if defined(OS_CHROMEOS)
  89   return chromeos::login::kStubUser;
  90 #else
  91   return "user@example.com";
  92 #endif
  93 }
  94
  95 std::string GetEmptyPolicy() {
  96   const char kEmptyPolicy[] =
  97       "{"
  98       "  \"%s\": {"
  99       "    \"mandatory\": {},"
 100       "    \"recommended\": {}"
 101       "  },"
 102       "  \"managed_users\": [ \"*\" ],"
 103       "  \"policy_user\": \"%s\","
 104       "  \"current_key_index\": 0"
 105       "}";
 106
 107   return base::StringPrintf(
 108       kEmptyPolicy, dm_protocol::kChromeUserPolicyType, GetTestUser());
 109 }
 110
 111 std::string GetTestPolicy(const char* homepage, int key_version) {
 112   const char kTestPolicy[] =
 113       "{"
 114       "  \"%s\": {"
 115       "    \"mandatory\": {"
 116       "      \"ShowHomeButton\": true,"
 117       "      \"RestoreOnStartup\": 4,"
 118       "      \"URLBlacklist\": [ \"dev.chromium.org\", \"youtube.com\" ],"
 119       "      \"MaxInvalidationFetchDelay\": 1000"
 120       "    },"
 121       "    \"recommended\": {"
 122       "      \"HomepageLocation\": \"%s\""
 123       "    }"
 124       "  },"
 125       "  \"managed_users\": [ \"*\" ],"
 126       "  \"policy_user\": \"%s\","
 127       "  \"current_key_index\": %d,"
 128       "  \"invalidation_source\": 16,"
 129       "  \"invalidation_name\": \"test_policy\""
 130       "}";
 131
 132   return base::StringPrintf(kTestPolicy,
 133                             dm_protocol::kChromeUserPolicyType,
 134                             homepage,
 135                             GetTestUser(),
 136                             key_version);
 137 }
 138
 139 void GetExpectedDefaultPolicy(PolicyMap* policy_map) {
 140 #if defined(OS_CHROMEOS)
 141   policy_map->Set(key::kChromeOsMultiProfileUserBehavior,
 142                   POLICY_LEVEL_MANDATORY,
 143                   POLICY_SCOPE_USER,
 144                   new base::StringValue("primary-only"),
 145                   NULL);
 146   policy_map->Set(key::kEasyUnlockAllowed,
 147                   POLICY_LEVEL_MANDATORY,
 148                   POLICY_SCOPE_USER,
 149                   new base::FundamentalValue(false),
 150                   NULL);
 151 #endif
 152 }
 153
 154 void GetExpectedTestPolicy(PolicyMap* expected, const char* homepage) {
 155   expected->Set(key::kShowHomeButton,
 156                 POLICY_LEVEL_MANDATORY,
 157                 POLICY_SCOPE_USER,
 158                 new base::FundamentalValue(true),
 159                 NULL);
 160   expected->Set(key::kRestoreOnStartup,
 161                 POLICY_LEVEL_MANDATORY,
 162                 POLICY_SCOPE_USER,
 163                 new base::FundamentalValue(4),
 164                 NULL);
 165   base::ListValue list;
 166   list.AppendString("dev.chromium.org");
 167   list.AppendString("youtube.com");
 168   expected->Set(
 169       key::kURLBlacklist, POLICY_LEVEL_MANDATORY, POLICY_SCOPE_USER,
 170       list.DeepCopy(), NULL);
 171   expected->Set(key::kMaxInvalidationFetchDelay,
 172                 POLICY_LEVEL_MANDATORY,
 173                 POLICY_SCOPE_USER,
 174                 new base::FundamentalValue(1000),
 175                 NULL);
 176   expected->Set(key::kHomepageLocation,
 177                 POLICY_LEVEL_RECOMMENDED,
 178                 POLICY_SCOPE_USER,
 179                 new base::StringValue(homepage),
 180                 NULL);
 181 #if defined(OS_CHROMEOS)
 182   expected->Set(key::kChromeOsMultiProfileUserBehavior,
 183                 POLICY_LEVEL_MANDATORY,
 184                 POLICY_SCOPE_USER,
 185                 new base::StringValue("primary-only"),
 186                 NULL);
 187   expected->Set(key::kEasyUnlockAllowed,
 188                 POLICY_LEVEL_MANDATORY,
 189                 POLICY_SCOPE_USER,
 190                 new base::FundamentalValue(false),
 191                 NULL);
 192 #endif
 193 }
 194
 195 }  // namespace
 196
 197 // Tests the cloud policy stack(s).
 198 class CloudPolicyTest : public InProcessBrowserTest,
 199                         public PolicyService::Observer {
 200  protected:
 201   CloudPolicyTest() {}
 202   ~CloudPolicyTest() override {}
 203
 204   void SetUpInProcessBrowserTestFixture() override {
 205     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
 206     ASSERT_NO_FATAL_FAILURE(SetServerPolicy(GetEmptyPolicy()));
 207
 208     test_server_.reset(new LocalPolicyTestServer(policy_file_path()));
 209     ASSERT_TRUE(test_server_->Start());
 210
 211     std::string url = test_server_->GetServiceURL().spec();
 212
 213     base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 214     command_line->AppendSwitchASCII(switches::kDeviceManagementUrl, url);
 215
 216     invalidation::ProfileInvalidationProviderFactory::GetInstance()->
 217         RegisterTestingFactory(BuildFakeProfileInvalidationProvider);
 218   }
 219
 220   void SetUpOnMainThread() override {
 221     ASSERT_TRUE(PolicyServiceIsEmpty(g_browser_process->policy_service()))
 222         << "Pre-existing policies in this machine will make this test fail.";
 223
 224     BrowserPolicyConnector* connector =
 225         g_browser_process->browser_policy_connector();
 226     connector->ScheduleServiceInitialization(0);
 227
 228 #if defined(OS_CHROMEOS)
 229     UserCloudPolicyManagerChromeOS* policy_manager =
 230         UserCloudPolicyManagerFactoryChromeOS::GetForProfile(
 231             browser()->profile());
 232     ASSERT_TRUE(policy_manager);
 233 #else
 234     // Mock a signed-in user. This is used by the UserCloudPolicyStore to pass
 235     // the username to the UserCloudPolicyValidator.
 236     SigninManager* signin_manager =
 237         SigninManagerFactory::GetForProfile(browser()->profile());
 238     ASSERT_TRUE(signin_manager);
 239     signin_manager->SetAuthenticatedUsername(GetTestUser());
 240
 241     UserCloudPolicyManager* policy_manager =
 242         UserCloudPolicyManagerFactory::GetForBrowserContext(
 243             browser()->profile());
 244     ASSERT_TRUE(policy_manager);
 245     policy_manager->Connect(
 246         g_browser_process->local_state(),
 247         g_browser_process->system_request_context(),
 248         UserCloudPolicyManager::CreateCloudPolicyClient(
 249             connector->device_management_service(),
 250             g_browser_process->system_request_context()).Pass());
 251 #endif  // defined(OS_CHROMEOS)
 252
 253     ASSERT_TRUE(policy_manager->core()->client());
 254     base::RunLoop run_loop;
 255     MockCloudPolicyClientObserver observer;
 256     EXPECT_CALL(observer, OnRegistrationStateChanged(_)).WillOnce(
 257         InvokeWithoutArgs(&run_loop, &base::RunLoop::Quit));
 258     policy_manager->core()->client()->AddObserver(&observer);
 259
 260     // Give a bogus OAuth token to the |policy_manager|. This should make its
 261     // CloudPolicyClient fetch the DMToken.
 262     ASSERT_FALSE(policy_manager->core()->client()->is_registered());
 263     em::DeviceRegisterRequest::Type registration_type =
 264 #if defined(OS_CHROMEOS)
 265         em::DeviceRegisterRequest::USER;
 266 #else
 267         em::DeviceRegisterRequest::BROWSER;
 268 #endif
 269     policy_manager->core()->client()->Register(
 270         registration_type, em::DeviceRegisterRequest::FLAVOR_USER_REGISTRATION,
 271         "bogus", std::string(), std::string(), std::string());
 272     run_loop.Run();
 273     Mock::VerifyAndClearExpectations(&observer);
 274     policy_manager->core()->client()->RemoveObserver(&observer);
 275     EXPECT_TRUE(policy_manager->core()->client()->is_registered());
 276
 277 #if defined(OS_CHROMEOS)
 278     // Get the path to the user policy key file.
 279     base::FilePath user_policy_key_dir;
 280     ASSERT_TRUE(
 281         PathService::Get(chromeos::DIR_USER_POLICY_KEYS, &user_policy_key_dir));
 282     std::string sanitized_username =
 283         chromeos::CryptohomeClient::GetStubSanitizedUsername(GetTestUser());
 284     user_policy_key_file_ = user_policy_key_dir.AppendASCII(sanitized_username)
 285                                                .AppendASCII("policy.pub");
 286 #endif
 287   }
 288
 289   PolicyService* GetPolicyService() {
 290     ProfilePolicyConnector* profile_connector =
 291         ProfilePolicyConnectorFactory::GetForBrowserContext(
 292             browser()->profile());
 293     return profile_connector->policy_service();
 294   }
 295
 296   invalidation::FakeInvalidationService* GetInvalidationService() {
 297     return static_cast<invalidation::FakeInvalidationService*>(
 298         static_cast<invalidation::ProfileInvalidationProvider*>(
 299             invalidation::ProfileInvalidationProviderFactory::GetInstance()->
 300                 GetForProfile(browser()->profile()))->GetInvalidationService());
 301   }
 302
 303   void SetServerPolicy(const std::string& policy) {
 304     int result = base::WriteFile(policy_file_path(), policy.data(),
 305                                  policy.size());
 306     ASSERT_EQ(static_cast<int>(policy.size()), result);
 307   }
 308
 309   base::FilePath policy_file_path() const {
 310     return temp_dir_.path().AppendASCII("policy.json");
 311   }
 312
 313   void OnPolicyUpdated(const PolicyNamespace& ns,
 314                        const PolicyMap& previous,
 315                        const PolicyMap& current) override {
 316     if (!on_policy_updated_.is_null()) {
 317       on_policy_updated_.Run();
 318       on_policy_updated_.Reset();
 319     }
 320   }
 321
 322   void OnPolicyServiceInitialized(PolicyDomain domain) override {}
 323
 324   base::ScopedTempDir temp_dir_;
 325   scoped_ptr<LocalPolicyTestServer> test_server_;
 326   base::FilePath user_policy_key_file_;
 327   base::Closure on_policy_updated_;
 328 };
 329
 330 IN_PROC_BROWSER_TEST_F(CloudPolicyTest, FetchPolicy) {
 331   PolicyService* policy_service = GetPolicyService();
 332   {
 333     base::RunLoop run_loop;
 334     // This does the initial fetch and stores the initial key.
 335     policy_service->RefreshPolicies(run_loop.QuitClosure());
 336     run_loop.Run();
 337   }
 338
 339   PolicyMap default_policy;
 340   GetExpectedDefaultPolicy(&default_policy);
 341   EXPECT_TRUE(default_policy.Equals(policy_service->GetPolicies(
 342       PolicyNamespace(POLICY_DOMAIN_CHROME, std::string()))));
 343
 344   ASSERT_NO_FATAL_FAILURE(SetServerPolicy(GetTestPolicy("google.com", 0)));
 345   PolicyMap expected;
 346   GetExpectedTestPolicy(&expected, "google.com");
 347   {
 348     base::RunLoop run_loop;
 349     // This fetches the new policies, using the same key.
 350     policy_service->RefreshPolicies(run_loop.QuitClosure());
 351     run_loop.Run();
 352   }
 353   EXPECT_TRUE(expected.Equals(policy_service->GetPolicies(
 354       PolicyNamespace(POLICY_DOMAIN_CHROME, std::string()))));
 355 }
 356
 357 IN_PROC_BROWSER_TEST_F(CloudPolicyTest, InvalidatePolicy) {
 358   PolicyService* policy_service = GetPolicyService();
 359   policy_service->AddObserver(POLICY_DOMAIN_CHROME, this);
 360
 361   // Perform the initial fetch.
 362   ASSERT_NO_FATAL_FAILURE(SetServerPolicy(GetTestPolicy("google.com", 0)));
 363   {
 364     base::RunLoop run_loop;
 365     policy_service->RefreshPolicies(run_loop.QuitClosure());
 366     run_loop.Run();
 367   }
 368
 369   // Update the homepage in the policy and trigger an invalidation.
 370   ASSERT_NO_FATAL_FAILURE(SetServerPolicy(GetTestPolicy("youtube.com", 0)));
 371   base::TimeDelta now =
 372       base::Time::NowFromSystemTime() - base::Time::UnixEpoch();
 373   GetInvalidationService()->EmitInvalidationForTest(
 374       syncer::Invalidation::Init(
 375           invalidation::ObjectId(16, "test_policy"),
 376           now.InMicroseconds() /* version */,
 377           "payload"));
 378   {
 379     base::RunLoop run_loop;
 380     on_policy_updated_ = run_loop.QuitClosure();
 381     run_loop.Run();
 382   }
 383
 384   // Check that the updated policy was fetched.
 385   PolicyMap expected;
 386   GetExpectedTestPolicy(&expected, "youtube.com");
 387   EXPECT_TRUE(expected.Equals(policy_service->GetPolicies(
 388       PolicyNamespace(POLICY_DOMAIN_CHROME, std::string()))));
 389
 390   policy_service->RemoveObserver(POLICY_DOMAIN_CHROME, this);
 391 }
 392
 393 #if defined(OS_CHROMEOS)
 394 IN_PROC_BROWSER_TEST_F(CloudPolicyTest, FetchPolicyWithRotatedKey) {
 395   PolicyService* policy_service = GetPolicyService();
 396   {
 397     base::RunLoop run_loop;
 398     // This does the initial fetch and stores the initial key.
 399     policy_service->RefreshPolicies(run_loop.QuitClosure());
 400     run_loop.Run();
 401   }
 402
 403   // Read the initial key.
 404   std::string initial_key;
 405   ASSERT_TRUE(base::ReadFileToString(user_policy_key_file_, &initial_key));
 406
 407   PolicyMap default_policy;
 408   GetExpectedDefaultPolicy(&default_policy);
 409   EXPECT_TRUE(default_policy.Equals(policy_service->GetPolicies(
 410       PolicyNamespace(POLICY_DOMAIN_CHROME, std::string()))));
 411
 412   // Set the new policies and a new key at the server.
 413   ASSERT_NO_FATAL_FAILURE(SetServerPolicy(GetTestPolicy("google.com", 1)));
 414   PolicyMap expected;
 415   GetExpectedTestPolicy(&expected, "google.com");
 416   {
 417     base::RunLoop run_loop;
 418     // This fetches the new policies and does a key rotation.
 419     policy_service->RefreshPolicies(run_loop.QuitClosure());
 420     run_loop.Run();
 421   }
 422   EXPECT_TRUE(expected.Equals(policy_service->GetPolicies(
 423       PolicyNamespace(POLICY_DOMAIN_CHROME, std::string()))));
 424
 425   // Verify that the key was rotated.
 426   std::string rotated_key;
 427   ASSERT_TRUE(base::ReadFileToString(user_policy_key_file_, &rotated_key));
 428   EXPECT_NE(rotated_key, initial_key);
 429
 430   // Another refresh using the same key won't rotate it again.
 431   {
 432     base::RunLoop run_loop;
 433     policy_service->RefreshPolicies(run_loop.QuitClosure());
 434     run_loop.Run();
 435   }
 436   EXPECT_TRUE(expected.Equals(policy_service->GetPolicies(
 437       PolicyNamespace(POLICY_DOMAIN_CHROME, std::string()))));
 438   std::string current_key;
 439   ASSERT_TRUE(base::ReadFileToString(user_policy_key_file_, &current_key));
 440   EXPECT_EQ(rotated_key, current_key);
 441 }
 442 #endif
 443
 444 TEST(CloudPolicyProtoTest, VerifyProtobufEquivalence) {
 445   // There are 2 protobufs that can be used for user cloud policy:
 446   // cloud_policy.proto and chrome_settings.proto. chrome_settings.proto is the
 447   // version used by the server, but generates one proto message per policy; to
 448   // save binary size on the client, the other version shares proto messages for
 449   // policies of the same type. They generate the same bytes on the wire though,
 450   // so they are compatible. This test verifies that that stays true.
 451
 452   // Build a ChromeSettingsProto message with one policy of each supported type.
 453   em::ChromeSettingsProto chrome_settings;
 454   chrome_settings.mutable_homepagelocation()->set_homepagelocation(
 455       "chromium.org");
 456   chrome_settings.mutable_showhomebutton()->set_showhomebutton(true);
 457   chrome_settings.mutable_restoreonstartup()->set_restoreonstartup(4);
 458   em::StringList* list =
 459       chrome_settings.mutable_disabledschemes()->mutable_disabledschemes();
 460   list->add_entries("ftp");
 461   list->add_entries("mailto");
 462   // Try explicitly setting a policy mode too.
 463   chrome_settings.mutable_disablespdy()->set_disablespdy(false);
 464   chrome_settings.mutable_disablespdy()->mutable_policy_options()->set_mode(
 465       em::PolicyOptions::MANDATORY);
 466   chrome_settings.mutable_syncdisabled()->set_syncdisabled(true);
 467   chrome_settings.mutable_syncdisabled()->mutable_policy_options()->set_mode(
 468       em::PolicyOptions::RECOMMENDED);
 469
 470   // Build an equivalent CloudPolicySettings message.
 471   em::CloudPolicySettings cloud_policy;
 472   cloud_policy.mutable_homepagelocation()->set_value("chromium.org");
 473   cloud_policy.mutable_showhomebutton()->set_value(true);
 474   cloud_policy.mutable_restoreonstartup()->set_value(4);
 475   list = cloud_policy.mutable_disabledschemes()->mutable_value();
 476   list->add_entries("ftp");
 477   list->add_entries("mailto");
 478   cloud_policy.mutable_disablespdy()->set_value(false);
 479   cloud_policy.mutable_disablespdy()->mutable_policy_options()->set_mode(
 480       em::PolicyOptions::MANDATORY);
 481   cloud_policy.mutable_syncdisabled()->set_value(true);
 482   cloud_policy.mutable_syncdisabled()->mutable_policy_options()->set_mode(
 483       em::PolicyOptions::RECOMMENDED);
 484
 485   // They should now serialize to the same bytes.
 486   std::string chrome_settings_serialized;
 487   std::string cloud_policy_serialized;
 488   ASSERT_TRUE(chrome_settings.SerializeToString(&chrome_settings_serialized));
 489   ASSERT_TRUE(cloud_policy.SerializeToString(&cloud_policy_serialized));
 490   EXPECT_EQ(chrome_settings_serialized, cloud_policy_serialized);
 491 }
 492
 493 }  // namespace policy