chrome/browser/ui/webui/policy_ui.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 "chrome/browser/ui/webui/policy_ui.h"
   6
   7 #include "base/bind.h"
   8 #include "base/bind_helpers.h"
   9 #include "base/callback.h"
  10 #include "base/compiler_specific.h"
  11 #include "base/json/json_writer.h"
  12 #include "base/logging.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/memory/weak_ptr.h"
  15 #include "base/strings/string16.h"
  16 #include "base/time/time.h"
  17 #include "base/values.h"
  18 #include "chrome/browser/browser_process.h"
  19 #include "chrome/browser/chrome_notification_types.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/schema_registry_service.h"
  23 #include "chrome/browser/policy/schema_registry_service_factory.h"
  24 #include "chrome/browser/profiles/profile.h"
  25 #include "chrome/common/url_constants.h"
  26 #include "components/policy/core/browser/browser_policy_connector.h"
  27 #include "components/policy/core/browser/cloud/message_util.h"
  28 #include "components/policy/core/browser/configuration_policy_handler_list.h"
  29 #include "components/policy/core/browser/policy_error_map.h"
  30 #include "components/policy/core/common/cloud/cloud_policy_client.h"
  31 #include "components/policy/core/common/cloud/cloud_policy_constants.h"
  32 #include "components/policy/core/common/cloud/cloud_policy_core.h"
  33 #include "components/policy/core/common/cloud/cloud_policy_refresh_scheduler.h"
  34 #include "components/policy/core/common/cloud/cloud_policy_store.h"
  35 #include "components/policy/core/common/cloud/cloud_policy_validator.h"
  36 #include "components/policy/core/common/policy_map.h"
  37 #include "components/policy/core/common/policy_namespace.h"
  38 #include "components/policy/core/common/policy_service.h"
  39 #include "components/policy/core/common/policy_types.h"
  40 #include "components/policy/core/common/schema.h"
  41 #include "components/policy/core/common/schema_map.h"
  42 #include "components/policy/core/common/schema_registry.h"
  43 #include "content/public/browser/notification_observer.h"
  44 #include "content/public/browser/notification_registrar.h"
  45 #include "content/public/browser/notification_service.h"
  46 #include "content/public/browser/web_contents.h"
  47 #include "content/public/browser/web_ui.h"
  48 #include "content/public/browser/web_ui_data_source.h"
  49 #include "content/public/browser/web_ui_message_handler.h"
  50 #include "google_apis/gaia/gaia_auth_util.h"
  51 #include "grit/browser_resources.h"
  52 #include "grit/components_strings.h"
  53 #include "policy/policy_constants.h"
  54 #include "policy/proto/device_management_backend.pb.h"
  55 #include "ui/base/l10n/l10n_util.h"
  56 #include "ui/base/l10n/time_format.h"
  57
  58 #if defined(OS_CHROMEOS)
  59 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
  60 #include "chrome/browser/chromeos/policy/device_cloud_policy_manager_chromeos.h"
  61 #include "chrome/browser/chromeos/policy/device_local_account_policy_service.h"
  62 #include "chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.h"
  63 #include "chrome/browser/chromeos/policy/user_cloud_policy_manager_factory_chromeos.h"
  64 #include "components/user_manager/user_manager.h"
  65 #else
  66 #include "chrome/browser/policy/cloud/user_cloud_policy_manager_factory.h"
  67 #include "components/policy/core/common/cloud/user_cloud_policy_manager.h"
  68 #endif
  69
  70 #if defined(ENABLE_EXTENSIONS)
  71 #include "extensions/browser/extension_registry.h"
  72 #include "extensions/common/extension.h"
  73 #include "extensions/common/extension_set.h"
  74 #include "extensions/common/manifest.h"
  75 #include "extensions/common/manifest_constants.h"
  76 #endif
  77
  78 namespace em = enterprise_management;
  79
  80 namespace {
  81
  82 content::WebUIDataSource* CreatePolicyUIHTMLSource() {
  83   content::WebUIDataSource* source =
  84       content::WebUIDataSource::Create(chrome::kChromeUIPolicyHost);
  85
  86   // Localized strings.
  87   source->AddLocalizedString("title", IDS_POLICY_TITLE);
  88   source->AddLocalizedString("filterPlaceholder",
  89                              IDS_POLICY_FILTER_PLACEHOLDER);
  90   source->AddLocalizedString("reloadPolicies", IDS_POLICY_RELOAD_POLICIES);
  91   source->AddLocalizedString("status", IDS_POLICY_STATUS);
  92   source->AddLocalizedString("statusDevice", IDS_POLICY_STATUS_DEVICE);
  93   source->AddLocalizedString("statusUser", IDS_POLICY_STATUS_USER);
  94   source->AddLocalizedString("labelDomain", IDS_POLICY_LABEL_DOMAIN);
  95   source->AddLocalizedString("labelUsername", IDS_POLICY_LABEL_USERNAME);
  96   source->AddLocalizedString("labelClientId", IDS_POLICY_LABEL_CLIENT_ID);
  97   source->AddLocalizedString("labelTimeSinceLastRefresh",
  98                              IDS_POLICY_LABEL_TIME_SINCE_LAST_REFRESH);
  99   source->AddLocalizedString("labelRefreshInterval",
 100                              IDS_POLICY_LABEL_REFRESH_INTERVAL);
 101   source->AddLocalizedString("labelStatus", IDS_POLICY_LABEL_STATUS);
 102   source->AddLocalizedString("showUnset", IDS_POLICY_SHOW_UNSET);
 103   source->AddLocalizedString("noPoliciesSet", IDS_POLICY_NO_POLICIES_SET);
 104   source->AddLocalizedString("headerScope", IDS_POLICY_HEADER_SCOPE);
 105   source->AddLocalizedString("headerLevel", IDS_POLICY_HEADER_LEVEL);
 106   source->AddLocalizedString("headerName", IDS_POLICY_HEADER_NAME);
 107   source->AddLocalizedString("headerValue", IDS_POLICY_HEADER_VALUE);
 108   source->AddLocalizedString("headerStatus", IDS_POLICY_HEADER_STATUS);
 109   source->AddLocalizedString("showExpandedValue",
 110                              IDS_POLICY_SHOW_EXPANDED_VALUE);
 111   source->AddLocalizedString("hideExpandedValue",
 112                              IDS_POLICY_HIDE_EXPANDED_VALUE);
 113   source->AddLocalizedString("scopeUser", IDS_POLICY_SCOPE_USER);
 114   source->AddLocalizedString("scopeDevice", IDS_POLICY_SCOPE_DEVICE);
 115   source->AddLocalizedString("levelRecommended", IDS_POLICY_LEVEL_RECOMMENDED);
 116   source->AddLocalizedString("levelMandatory", IDS_POLICY_LEVEL_MANDATORY);
 117   source->AddLocalizedString("ok", IDS_POLICY_OK);
 118   source->AddLocalizedString("unset", IDS_POLICY_UNSET);
 119   source->AddLocalizedString("unknown", IDS_POLICY_UNKNOWN);
 120
 121   source->SetJsonPath("strings.js");
 122
 123   // Add required resources.
 124   source->AddResourcePath("policy.css", IDR_POLICY_CSS);
 125   source->AddResourcePath("policy.js", IDR_POLICY_JS);
 126   source->AddResourcePath("uber_utils.js", IDR_UBER_UTILS_JS);
 127   source->SetDefaultResource(IDR_POLICY_HTML);
 128
 129   return source;
 130 }
 131
 132 // Formats the association state indicated by |data|. If |data| is NULL, the
 133 // state is considered to be UNMANAGED.
 134 base::string16 FormatAssociationState(const em::PolicyData* data) {
 135   if (data) {
 136     switch (data->state()) {
 137       case em::PolicyData::ACTIVE:
 138         return l10n_util::GetStringUTF16(IDS_POLICY_ASSOCIATION_STATE_ACTIVE);
 139       case em::PolicyData::UNMANAGED:
 140         return l10n_util::GetStringUTF16(
 141             IDS_POLICY_ASSOCIATION_STATE_UNMANAGED);
 142       case em::PolicyData::DEPROVISIONED:
 143         return l10n_util::GetStringUTF16(
 144             IDS_POLICY_ASSOCIATION_STATE_DEPROVISIONED);
 145     }
 146     NOTREACHED() << "Unknown state " << data->state();
 147   }
 148
 149   // Default to UNMANAGED for the case of missing policy or bad state enum.
 150   return l10n_util::GetStringUTF16(IDS_POLICY_ASSOCIATION_STATE_UNMANAGED);
 151 }
 152
 153 void GetStatusFromCore(const policy::CloudPolicyCore* core,
 154                        base::DictionaryValue* dict) {
 155   const policy::CloudPolicyStore* store = core->store();
 156   const policy::CloudPolicyClient* client = core->client();
 157   const policy::CloudPolicyRefreshScheduler* refresh_scheduler =
 158         core->refresh_scheduler();
 159
 160   // CloudPolicyStore errors take precedence to show in the status message.
 161   // Other errors (such as transient policy fetching problems) get displayed
 162   // only if CloudPolicyStore is in STATUS_OK.
 163   base::string16 status =
 164       policy::FormatStoreStatus(store->status(), store->validation_status());
 165   if (store->status() == policy::CloudPolicyStore::STATUS_OK) {
 166     if (client && client->status() != policy::DM_STATUS_SUCCESS)
 167       status = policy::FormatDeviceManagementStatus(client->status());
 168     else if (!store->is_managed())
 169       status = FormatAssociationState(store->policy());
 170   }
 171
 172   const em::PolicyData* policy = store->policy();
 173   std::string client_id = policy ? policy->device_id() : std::string();
 174   std::string username = policy ? policy->username() : std::string();
 175   base::TimeDelta refresh_interval =
 176       base::TimeDelta::FromMilliseconds(refresh_scheduler ?
 177           refresh_scheduler->refresh_delay() :
 178           policy::CloudPolicyRefreshScheduler::kDefaultRefreshDelayMs);
 179   base::Time last_refresh_time = refresh_scheduler ?
 180       refresh_scheduler->last_refresh() : base::Time();
 181
 182   bool no_error = store->status() == policy::CloudPolicyStore::STATUS_OK &&
 183                   client && client->status() == policy::DM_STATUS_SUCCESS;
 184   dict->SetBoolean("error", !no_error);
 185   dict->SetString("status", status);
 186   dict->SetString("clientId", client_id);
 187   dict->SetString("username", username);
 188   dict->SetString("refreshInterval",
 189                   ui::TimeFormat::Simple(ui::TimeFormat::FORMAT_DURATION,
 190                                          ui::TimeFormat::LENGTH_SHORT,
 191                                          refresh_interval));
 192   dict->SetString("timeSinceLastRefresh", last_refresh_time.is_null() ?
 193       l10n_util::GetStringUTF16(IDS_POLICY_NEVER_FETCHED) :
 194       ui::TimeFormat::Simple(ui::TimeFormat::FORMAT_ELAPSED,
 195                              ui::TimeFormat::LENGTH_SHORT,
 196                              base::Time::NowFromSystemTime() -
 197                                  last_refresh_time));
 198 }
 199
 200 void ExtractDomainFromUsername(base::DictionaryValue* dict) {
 201   std::string username;
 202   dict->GetString("username", &username);
 203   if (!username.empty())
 204     dict->SetString("domain", gaia::ExtractDomainName(username));
 205 }
 206
 207 // Utility function that returns a JSON serialization of the given |dict|.
 208 scoped_ptr<base::StringValue> DictionaryToJSONString(
 209     const base::DictionaryValue* dict) {
 210   std::string json_string;
 211   base::JSONWriter::WriteWithOptions(dict,
 212                                      base::JSONWriter::OPTIONS_PRETTY_PRINT,
 213                                      &json_string);
 214   return make_scoped_ptr(new base::StringValue(json_string));
 215 }
 216
 217 // Returns a copy of |value| with some values converted to a representation that
 218 // i18n_template.js will display in a nicer way.
 219 scoped_ptr<base::Value> CopyAndConvert(const base::Value* value) {
 220   const base::DictionaryValue* dict = NULL;
 221   if (value->GetAsDictionary(&dict))
 222     return DictionaryToJSONString(dict);
 223
 224   scoped_ptr<base::Value> copy(value->DeepCopy());
 225   base::ListValue* list = NULL;
 226   if (copy->GetAsList(&list)) {
 227     for (size_t i = 0; i < list->GetSize(); ++i) {
 228       if (list->GetDictionary(i, &dict))
 229         list->Set(i, DictionaryToJSONString(dict).release());
 230     }
 231   }
 232
 233   return copy.Pass();
 234 }
 235
 236 }  // namespace
 237
 238 // An interface for querying the status of cloud policy.
 239 class CloudPolicyStatusProvider {
 240  public:
 241   CloudPolicyStatusProvider();
 242   virtual ~CloudPolicyStatusProvider();
 243
 244   // Sets a callback to invoke upon status changes.
 245   void SetStatusChangeCallback(const base::Closure& callback);
 246
 247   virtual void GetStatus(base::DictionaryValue* dict);
 248
 249  protected:
 250   void NotifyStatusChange();
 251
 252  private:
 253   base::Closure callback_;
 254
 255   DISALLOW_COPY_AND_ASSIGN(CloudPolicyStatusProvider);
 256 };
 257
 258 // Status provider implementation that pulls cloud policy status from a
 259 // CloudPolicyCore instance provided at construction time. Also listens for
 260 // changes on that CloudPolicyCore and reports them through the status change
 261 // callback.
 262 class CloudPolicyCoreStatusProvider
 263     : public CloudPolicyStatusProvider,
 264       public policy::CloudPolicyStore::Observer {
 265  public:
 266   explicit CloudPolicyCoreStatusProvider(policy::CloudPolicyCore* core);
 267   ~CloudPolicyCoreStatusProvider() override;
 268
 269   // policy::CloudPolicyStore::Observer implementation.
 270   void OnStoreLoaded(policy::CloudPolicyStore* store) override;
 271   void OnStoreError(policy::CloudPolicyStore* store) override;
 272
 273  protected:
 274   // Policy status is read from the CloudPolicyClient, CloudPolicyStore and
 275   // CloudPolicyRefreshScheduler hosted by this |core_|.
 276   policy::CloudPolicyCore* core_;
 277
 278  private:
 279   DISALLOW_COPY_AND_ASSIGN(CloudPolicyCoreStatusProvider);
 280 };
 281
 282 // A cloud policy status provider for user policy.
 283 class UserPolicyStatusProvider : public CloudPolicyCoreStatusProvider {
 284  public:
 285   explicit UserPolicyStatusProvider(policy::CloudPolicyCore* core);
 286   ~UserPolicyStatusProvider() override;
 287
 288   // CloudPolicyCoreStatusProvider implementation.
 289   void GetStatus(base::DictionaryValue* dict) override;
 290
 291  private:
 292   DISALLOW_COPY_AND_ASSIGN(UserPolicyStatusProvider);
 293 };
 294
 295 #if defined(OS_CHROMEOS)
 296 // A cloud policy status provider for device policy.
 297 class DevicePolicyStatusProvider : public CloudPolicyCoreStatusProvider {
 298  public:
 299   explicit DevicePolicyStatusProvider(
 300       policy::BrowserPolicyConnectorChromeOS* connector);
 301   ~DevicePolicyStatusProvider() override;
 302
 303   // CloudPolicyCoreStatusProvider implementation.
 304   void GetStatus(base::DictionaryValue* dict) override;
 305
 306  private:
 307   std::string domain_;
 308
 309   DISALLOW_COPY_AND_ASSIGN(DevicePolicyStatusProvider);
 310 };
 311
 312 // A cloud policy status provider that reads policy status from the policy core
 313 // associated with the device-local account specified by |user_id| at
 314 // construction time. The indirection via user ID and
 315 // DeviceLocalAccountPolicyService is necessary because the device-local account
 316 // may go away any time behind the scenes, at which point the status message
 317 // text will indicate CloudPolicyStore::STATUS_BAD_STATE.
 318 class DeviceLocalAccountPolicyStatusProvider
 319     : public CloudPolicyStatusProvider,
 320       public policy::DeviceLocalAccountPolicyService::Observer {
 321  public:
 322   DeviceLocalAccountPolicyStatusProvider(
 323       const std::string& user_id,
 324       policy::DeviceLocalAccountPolicyService* service);
 325   ~DeviceLocalAccountPolicyStatusProvider() override;
 326
 327   // CloudPolicyStatusProvider implementation.
 328   void GetStatus(base::DictionaryValue* dict) override;
 329
 330   // policy::DeviceLocalAccountPolicyService::Observer implementation.
 331   void OnPolicyUpdated(const std::string& user_id) override;
 332   void OnDeviceLocalAccountsChanged() override;
 333
 334  private:
 335   const std::string user_id_;
 336   policy::DeviceLocalAccountPolicyService* service_;
 337
 338   DISALLOW_COPY_AND_ASSIGN(DeviceLocalAccountPolicyStatusProvider);
 339 };
 340 #endif
 341
 342 // The JavaScript message handler for the chrome://policy page.
 343 class PolicyUIHandler : public content::NotificationObserver,
 344                         public content::WebUIMessageHandler,
 345                         public policy::PolicyService::Observer {
 346  public:
 347   PolicyUIHandler();
 348   ~PolicyUIHandler() override;
 349
 350   // content::NotificationObserver implementation.
 351   void Observe(int type,
 352                const content::NotificationSource& source,
 353                const content::NotificationDetails& details) override;
 354
 355   // content::WebUIMessageHandler implementation.
 356   void RegisterMessages() override;
 357
 358   // policy::PolicyService::Observer implementation.
 359   void OnPolicyUpdated(const policy::PolicyNamespace& ns,
 360                        const policy::PolicyMap& previous,
 361                        const policy::PolicyMap& current) override;
 362
 363  private:
 364   // Send a dictionary containing the names of all known policies to the UI.
 365   void SendPolicyNames() const;
 366
 367   // Send information about the current policy values to the UI. For each policy
 368   // whose value has been set, a dictionary containing the value and additional
 369   // metadata is sent.
 370   void SendPolicyValues() const;
 371
 372   // Send the status of cloud policy to the UI. For each scope that has cloud
 373   // policy enabled (device and/or user), a dictionary containing status
 374   // information is sent.
 375   void SendStatus() const;
 376
 377   // Inserts a description of each policy in |policy_map| into |values|, using
 378   // the optional errors in |errors| to determine the status of each policy.
 379   void GetPolicyValues(const policy::PolicyMap& policy_map,
 380                        policy::PolicyErrorMap* errors,
 381                        base::DictionaryValue* values) const;
 382
 383   void GetChromePolicyValues(base::DictionaryValue* values) const;
 384
 385   void HandleInitialized(const base::ListValue* args);
 386   void HandleReloadPolicies(const base::ListValue* args);
 387
 388   void OnRefreshPoliciesDone() const;
 389
 390   policy::PolicyService* GetPolicyService() const;
 391
 392   bool initialized_;
 393   std::string device_domain_;
 394
 395   // Providers that supply status dictionaries for user and device policy,
 396   // respectively. These are created on initialization time as appropriate for
 397   // the platform (Chrome OS / desktop) and type of policy that is in effect.
 398   scoped_ptr<CloudPolicyStatusProvider> user_status_provider_;
 399   scoped_ptr<CloudPolicyStatusProvider> device_status_provider_;
 400
 401 #if defined(ENABLE_EXTENSIONS)
 402   content::NotificationRegistrar registrar_;
 403 #endif
 404
 405   base::WeakPtrFactory<PolicyUIHandler> weak_factory_;
 406
 407   DISALLOW_COPY_AND_ASSIGN(PolicyUIHandler);
 408 };
 409
 410 CloudPolicyStatusProvider::CloudPolicyStatusProvider() {
 411 }
 412
 413 CloudPolicyStatusProvider::~CloudPolicyStatusProvider() {
 414 }
 415
 416 void CloudPolicyStatusProvider::SetStatusChangeCallback(
 417     const base::Closure& callback) {
 418   callback_ = callback;
 419 }
 420
 421 void CloudPolicyStatusProvider::GetStatus(base::DictionaryValue* dict) {
 422 }
 423
 424 void CloudPolicyStatusProvider::NotifyStatusChange() {
 425   if (!callback_.is_null())
 426     callback_.Run();
 427 }
 428
 429 CloudPolicyCoreStatusProvider::CloudPolicyCoreStatusProvider(
 430     policy::CloudPolicyCore* core) : core_(core) {
 431   core_->store()->AddObserver(this);
 432   // TODO(bartfab): Add an observer that watches for client errors. Observing
 433   // core_->client() directly is not safe as the client may be destroyed and
 434   // (re-)created anytime if the user signs in or out on desktop platforms.
 435 }
 436
 437 CloudPolicyCoreStatusProvider::~CloudPolicyCoreStatusProvider() {
 438   core_->store()->RemoveObserver(this);
 439 }
 440
 441 void CloudPolicyCoreStatusProvider::OnStoreLoaded(
 442     policy::CloudPolicyStore* store) {
 443   NotifyStatusChange();
 444 }
 445
 446 void CloudPolicyCoreStatusProvider::OnStoreError(
 447     policy::CloudPolicyStore* store) {
 448   NotifyStatusChange();
 449 }
 450
 451 UserPolicyStatusProvider::UserPolicyStatusProvider(
 452     policy::CloudPolicyCore* core) : CloudPolicyCoreStatusProvider(core) {
 453 }
 454
 455 UserPolicyStatusProvider::~UserPolicyStatusProvider() {
 456 }
 457
 458 void UserPolicyStatusProvider::GetStatus(base::DictionaryValue* dict) {
 459   if (!core_->store()->is_managed())
 460     return;
 461   GetStatusFromCore(core_, dict);
 462   ExtractDomainFromUsername(dict);
 463 }
 464
 465 #if defined(OS_CHROMEOS)
 466 DevicePolicyStatusProvider::DevicePolicyStatusProvider(
 467     policy::BrowserPolicyConnectorChromeOS* connector)
 468       : CloudPolicyCoreStatusProvider(
 469             connector->GetDeviceCloudPolicyManager()->core()) {
 470   domain_ = connector->GetEnterpriseDomain();
 471 }
 472
 473 DevicePolicyStatusProvider::~DevicePolicyStatusProvider() {
 474 }
 475
 476 void DevicePolicyStatusProvider::GetStatus(base::DictionaryValue* dict) {
 477   GetStatusFromCore(core_, dict);
 478   dict->SetString("domain", domain_);
 479 }
 480
 481 DeviceLocalAccountPolicyStatusProvider::DeviceLocalAccountPolicyStatusProvider(
 482     const std::string& user_id,
 483     policy::DeviceLocalAccountPolicyService* service)
 484       : user_id_(user_id),
 485         service_(service) {
 486   service_->AddObserver(this);
 487 }
 488
 489 DeviceLocalAccountPolicyStatusProvider::
 490     ~DeviceLocalAccountPolicyStatusProvider() {
 491   service_->RemoveObserver(this);
 492 }
 493
 494 void DeviceLocalAccountPolicyStatusProvider::GetStatus(
 495     base::DictionaryValue* dict) {
 496   const policy::DeviceLocalAccountPolicyBroker* broker =
 497       service_->GetBrokerForUser(user_id_);
 498   if (broker) {
 499     GetStatusFromCore(broker->core(), dict);
 500   } else {
 501     dict->SetBoolean("error", true);
 502     dict->SetString("status",
 503                     policy::FormatStoreStatus(
 504                         policy::CloudPolicyStore::STATUS_BAD_STATE,
 505                         policy::CloudPolicyValidatorBase::VALIDATION_OK));
 506     dict->SetString("username", std::string());
 507   }
 508   ExtractDomainFromUsername(dict);
 509   dict->SetBoolean("publicAccount", true);
 510 }
 511
 512 void DeviceLocalAccountPolicyStatusProvider::OnPolicyUpdated(
 513     const std::string& user_id) {
 514   if (user_id == user_id_)
 515     NotifyStatusChange();
 516 }
 517
 518 void DeviceLocalAccountPolicyStatusProvider::OnDeviceLocalAccountsChanged() {
 519   NotifyStatusChange();
 520 }
 521 #endif
 522
 523 PolicyUIHandler::PolicyUIHandler()
 524     : initialized_(false),
 525       weak_factory_(this) {
 526 }
 527
 528 PolicyUIHandler::~PolicyUIHandler() {
 529   GetPolicyService()->RemoveObserver(policy::POLICY_DOMAIN_CHROME, this);
 530   GetPolicyService()->RemoveObserver(policy::POLICY_DOMAIN_EXTENSIONS, this);
 531 }
 532
 533 void PolicyUIHandler::RegisterMessages() {
 534 #if defined(OS_CHROMEOS)
 535   policy::BrowserPolicyConnectorChromeOS* connector =
 536       g_browser_process->platform_part()->browser_policy_connector_chromeos();
 537   if (connector->IsEnterpriseManaged())
 538     device_status_provider_.reset(new DevicePolicyStatusProvider(connector));
 539
 540   const user_manager::UserManager* user_manager =
 541       user_manager::UserManager::Get();
 542   if (user_manager->IsLoggedInAsPublicAccount()) {
 543     policy::DeviceLocalAccountPolicyService* local_account_service =
 544         connector->GetDeviceLocalAccountPolicyService();
 545     if (local_account_service) {
 546       user_status_provider_.reset(
 547           new DeviceLocalAccountPolicyStatusProvider(
 548               user_manager->GetLoggedInUser()->email(), local_account_service));
 549     }
 550   } else {
 551     policy::UserCloudPolicyManagerChromeOS* user_cloud_policy_manager =
 552         policy::UserCloudPolicyManagerFactoryChromeOS::GetForProfile(
 553             Profile::FromWebUI(web_ui()));
 554     if (user_cloud_policy_manager) {
 555       user_status_provider_.reset(
 556           new UserPolicyStatusProvider(user_cloud_policy_manager->core()));
 557     }
 558   }
 559 #else
 560   policy::UserCloudPolicyManager* user_cloud_policy_manager =
 561       policy::UserCloudPolicyManagerFactory::GetForBrowserContext(
 562           web_ui()->GetWebContents()->GetBrowserContext());
 563   if (user_cloud_policy_manager) {
 564     user_status_provider_.reset(
 565         new UserPolicyStatusProvider(user_cloud_policy_manager->core()));
 566   }
 567 #endif
 568
 569   if (!user_status_provider_.get())
 570     user_status_provider_.reset(new CloudPolicyStatusProvider());
 571   if (!device_status_provider_.get())
 572     device_status_provider_.reset(new CloudPolicyStatusProvider());
 573
 574   base::Closure update_callback(base::Bind(&PolicyUIHandler::SendStatus,
 575                                            base::Unretained(this)));
 576   user_status_provider_->SetStatusChangeCallback(update_callback);
 577   device_status_provider_->SetStatusChangeCallback(update_callback);
 578   GetPolicyService()->AddObserver(policy::POLICY_DOMAIN_CHROME, this);
 579   GetPolicyService()->AddObserver(policy::POLICY_DOMAIN_EXTENSIONS, this);
 580
 581 #if defined(ENABLE_EXTENSIONS)
 582   registrar_.Add(this,
 583                  extensions::NOTIFICATION_EXTENSION_LOADED_DEPRECATED,
 584                  content::NotificationService::AllSources());
 585   registrar_.Add(this,
 586                  extensions::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
 587                  content::NotificationService::AllSources());
 588 #endif
 589
 590   web_ui()->RegisterMessageCallback(
 591       "initialized",
 592       base::Bind(&PolicyUIHandler::HandleInitialized, base::Unretained(this)));
 593   web_ui()->RegisterMessageCallback(
 594       "reloadPolicies",
 595       base::Bind(&PolicyUIHandler::HandleReloadPolicies,
 596                  base::Unretained(this)));
 597 }
 598
 599 void PolicyUIHandler::Observe(int type,
 600                               const content::NotificationSource& source,
 601                               const content::NotificationDetails& details) {
 602 #if defined(ENABLE_EXTENSIONS)
 603   DCHECK(type == extensions::NOTIFICATION_EXTENSION_LOADED_DEPRECATED ||
 604          type == extensions::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED);
 605   SendPolicyNames();
 606   SendPolicyValues();
 607 #endif
 608 }
 609
 610 void PolicyUIHandler::OnPolicyUpdated(const policy::PolicyNamespace& ns,
 611                                       const policy::PolicyMap& previous,
 612                                       const policy::PolicyMap& current) {
 613   SendPolicyValues();
 614 }
 615
 616 void PolicyUIHandler::SendPolicyNames() const {
 617   base::DictionaryValue names;
 618
 619   Profile* profile = Profile::FromWebUI(web_ui());
 620   policy::SchemaRegistry* registry =
 621       policy::SchemaRegistryServiceFactory::GetForContext(
 622           profile->GetOriginalProfile())->registry();
 623   scoped_refptr<policy::SchemaMap> schema_map = registry->schema_map();
 624
 625   // Add Chrome policy names.
 626   base::DictionaryValue* chrome_policy_names = new base::DictionaryValue;
 627   policy::PolicyNamespace chrome_ns(policy::POLICY_DOMAIN_CHROME, "");
 628   const policy::Schema* chrome_schema = schema_map->GetSchema(chrome_ns);
 629   for (policy::Schema::Iterator it = chrome_schema->GetPropertiesIterator();
 630        !it.IsAtEnd(); it.Advance()) {
 631     chrome_policy_names->SetBoolean(it.key(), true);
 632   }
 633   names.Set("chromePolicyNames", chrome_policy_names);
 634
 635 #if defined(ENABLE_EXTENSIONS)
 636   // Add extension policy names.
 637   base::DictionaryValue* extension_policy_names = new base::DictionaryValue;
 638
 639   for (const scoped_refptr<const extensions::Extension>& extension :
 640        extensions::ExtensionRegistry::Get(profile)->enabled_extensions()) {
 641     // Skip this extension if it's not an enterprise extension.
 642     if (!extension->manifest()->HasPath(
 643         extensions::manifest_keys::kStorageManagedSchema))
 644       continue;
 645     base::DictionaryValue* extension_value = new base::DictionaryValue;
 646     extension_value->SetString("name", extension->name());
 647     const policy::Schema* schema =
 648         schema_map->GetSchema(policy::PolicyNamespace(
 649             policy::POLICY_DOMAIN_EXTENSIONS, extension->id()));
 650     base::DictionaryValue* policy_names = new base::DictionaryValue;
 651     if (schema && schema->valid()) {
 652       // Get policy names from the extension's policy schema.
 653       // Store in a map, not an array, for faster lookup on JS side.
 654       for (policy::Schema::Iterator prop = schema->GetPropertiesIterator();
 655            !prop.IsAtEnd(); prop.Advance()) {
 656         policy_names->SetBoolean(prop.key(), true);
 657       }
 658     }
 659     extension_value->Set("policyNames", policy_names);
 660     extension_policy_names->Set(extension->id(), extension_value);
 661   }
 662   names.Set("extensionPolicyNames", extension_policy_names);
 663 #endif  // defined(ENABLE_EXTENSIONS)
 664
 665   web_ui()->CallJavascriptFunction("policy.Page.setPolicyNames", names);
 666 }
 667
 668 void PolicyUIHandler::SendPolicyValues() const {
 669   base::DictionaryValue all_policies;
 670
 671   // Add Chrome policy values.
 672   base::DictionaryValue* chrome_policies = new base::DictionaryValue;
 673   GetChromePolicyValues(chrome_policies);
 674   all_policies.Set("chromePolicies", chrome_policies);
 675
 676 #if defined(ENABLE_EXTENSIONS)
 677   // Add extension policy values.
 678   extensions::ExtensionRegistry* registry =
 679       extensions::ExtensionRegistry::Get(Profile::FromWebUI(web_ui()));
 680   base::DictionaryValue* extension_values = new base::DictionaryValue;
 681
 682   for (const scoped_refptr<const extensions::Extension>& extension :
 683        registry->enabled_extensions()) {
 684     // Skip this extension if it's not an enterprise extension.
 685     if (!extension->manifest()->HasPath(
 686         extensions::manifest_keys::kStorageManagedSchema))
 687       continue;
 688     base::DictionaryValue* extension_policies = new base::DictionaryValue;
 689     policy::PolicyNamespace policy_namespace = policy::PolicyNamespace(
 690         policy::POLICY_DOMAIN_EXTENSIONS, extension->id());
 691     policy::PolicyErrorMap empty_error_map;
 692     GetPolicyValues(GetPolicyService()->GetPolicies(policy_namespace),
 693                     &empty_error_map, extension_policies);
 694     extension_values->Set(extension->id(), extension_policies);
 695   }
 696   all_policies.Set("extensionPolicies", extension_values);
 697 #endif
 698   web_ui()->CallJavascriptFunction("policy.Page.setPolicyValues", all_policies);
 699 }
 700
 701 void PolicyUIHandler::GetPolicyValues(const policy::PolicyMap& map,
 702                                       policy::PolicyErrorMap* errors,
 703                                       base::DictionaryValue* values) const {
 704   for (policy::PolicyMap::const_iterator entry = map.begin();
 705        entry != map.end(); ++entry) {
 706     base::DictionaryValue* value = new base::DictionaryValue;
 707     value->Set("value", CopyAndConvert(entry->second.value).release());
 708     if (entry->second.scope == policy::POLICY_SCOPE_USER)
 709       value->SetString("scope", "user");
 710     else
 711       value->SetString("scope", "machine");
 712     if (entry->second.level == policy::POLICY_LEVEL_RECOMMENDED)
 713       value->SetString("level", "recommended");
 714     else
 715       value->SetString("level", "mandatory");
 716     base::string16 error = errors->GetErrors(entry->first);
 717     if (!error.empty())
 718       value->SetString("error", error);
 719     values->Set(entry->first, value);
 720   }
 721 }
 722
 723 void PolicyUIHandler::GetChromePolicyValues(
 724     base::DictionaryValue* values) const {
 725   policy::PolicyService* policy_service = GetPolicyService();
 726   policy::PolicyMap map;
 727
 728   // Make a copy that can be modified, since some policy values are modified
 729   // before being displayed.
 730   map.CopyFrom(policy_service->GetPolicies(
 731       policy::PolicyNamespace(policy::POLICY_DOMAIN_CHROME, std::string())));
 732
 733   // Get a list of all the errors in the policy values.
 734   const policy::ConfigurationPolicyHandlerList* handler_list =
 735       g_browser_process->browser_policy_connector()->GetHandlerList();
 736   policy::PolicyErrorMap errors;
 737   handler_list->ApplyPolicySettings(map, NULL, &errors);
 738
 739   // Convert dictionary values to strings for display.
 740   handler_list->PrepareForDisplaying(&map);
 741
 742   GetPolicyValues(map, &errors, values);
 743 }
 744
 745 void PolicyUIHandler::SendStatus() const {
 746   scoped_ptr<base::DictionaryValue> device_status(new base::DictionaryValue);
 747   device_status_provider_->GetStatus(device_status.get());
 748   if (!device_domain_.empty())
 749     device_status->SetString("domain", device_domain_);
 750   scoped_ptr<base::DictionaryValue> user_status(new base::DictionaryValue);
 751   user_status_provider_->GetStatus(user_status.get());
 752   std::string username;
 753   user_status->GetString("username", &username);
 754   if (!username.empty())
 755     user_status->SetString("domain", gaia::ExtractDomainName(username));
 756
 757   base::DictionaryValue status;
 758   if (!device_status->empty())
 759     status.Set("device", device_status.release());
 760   if (!user_status->empty())
 761     status.Set("user", user_status.release());
 762
 763   web_ui()->CallJavascriptFunction("policy.Page.setStatus", status);
 764 }
 765
 766 void PolicyUIHandler::HandleInitialized(const base::ListValue* args) {
 767   SendPolicyNames();
 768   SendPolicyValues();
 769   SendStatus();
 770 }
 771
 772 void PolicyUIHandler::HandleReloadPolicies(const base::ListValue* args) {
 773   GetPolicyService()->RefreshPolicies(
 774       base::Bind(&PolicyUIHandler::OnRefreshPoliciesDone,
 775                  weak_factory_.GetWeakPtr()));
 776 }
 777
 778 void PolicyUIHandler::OnRefreshPoliciesDone() const {
 779   web_ui()->CallJavascriptFunction("policy.Page.reloadPoliciesDone");
 780 }
 781
 782 policy::PolicyService* PolicyUIHandler::GetPolicyService() const {
 783   return policy::ProfilePolicyConnectorFactory::GetForBrowserContext(
 784              web_ui()->GetWebContents()->GetBrowserContext())->policy_service();
 785 }
 786
 787 PolicyUI::PolicyUI(content::WebUI* web_ui) : WebUIController(web_ui) {
 788   web_ui->AddMessageHandler(new PolicyUIHandler);
 789   content::WebUIDataSource::Add(Profile::FromWebUI(web_ui),
 790                                 CreatePolicyUIHTMLSource());
 791 }
 792
 793 PolicyUI::~PolicyUI() {
 794 }