src/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_ui.h"
  47 #include "content/public/browser/web_ui_data_source.h"
  48 #include "content/public/browser/web_ui_message_handler.h"
  49 #include "google_apis/gaia/gaia_auth_util.h"
  50 #include "grit/browser_resources.h"
  51 #include "grit/components_strings.h"
  52 #include "policy/policy_constants.h"
  53 #include "policy/proto/device_management_backend.pb.h"
  54 #include "ui/base/l10n/l10n_util.h"
  55 #include "ui/base/l10n/time_format.h"
  56
  57 #if defined(OS_CHROMEOS)
  58 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
  59 #include "chrome/browser/chromeos/policy/device_cloud_policy_manager_chromeos.h"
  60 #include "chrome/browser/chromeos/policy/device_local_account_policy_service.h"
  61 #include "chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.h"
  62 #include "chrome/browser/chromeos/policy/user_cloud_policy_manager_factory_chromeos.h"
  63 #include "components/user_manager/user_manager.h"
  64 #else
  65 #include "chrome/browser/policy/cloud/user_cloud_policy_manager_factory.h"
  66 #include "components/policy/core/common/cloud/user_cloud_policy_manager.h"
  67 #include "content/public/browser/web_contents.h"
  68 #endif
  69
  70 #if !defined(OS_ANDROID) && !defined(OS_IOS)
  71 #include "chrome/browser/extensions/extension_service.h"
  72 #include "extensions/browser/extension_system.h"
  73 #include "extensions/common/extension.h"
  74 #include "extensions/common/extension_set.h"
  75 #include "extensions/common/manifest.h"
  76 #include "extensions/common/manifest_constants.h"
  77 #endif
  78
  79 namespace em = enterprise_management;
  80
  81 namespace {
  82
  83 content::WebUIDataSource* CreatePolicyUIHTMLSource() {
  84   content::WebUIDataSource* source =
  85       content::WebUIDataSource::Create(chrome::kChromeUIPolicyHost);
  86
  87   // Localized strings.
  88   source->AddLocalizedString("title", IDS_POLICY_TITLE);
  89   source->AddLocalizedString("filterPlaceholder",
  90                              IDS_POLICY_FILTER_PLACEHOLDER);
  91   source->AddLocalizedString("reloadPolicies", IDS_POLICY_RELOAD_POLICIES);
  92   source->AddLocalizedString("status", IDS_POLICY_STATUS);
  93   source->AddLocalizedString("statusDevice", IDS_POLICY_STATUS_DEVICE);
  94   source->AddLocalizedString("statusUser", IDS_POLICY_STATUS_USER);
  95   source->AddLocalizedString("labelDomain", IDS_POLICY_LABEL_DOMAIN);
  96   source->AddLocalizedString("labelUsername", IDS_POLICY_LABEL_USERNAME);
  97   source->AddLocalizedString("labelClientId", IDS_POLICY_LABEL_CLIENT_ID);
  98   source->AddLocalizedString("labelTimeSinceLastRefresh",
  99                              IDS_POLICY_LABEL_TIME_SINCE_LAST_REFRESH);
 100   source->AddLocalizedString("labelRefreshInterval",
 101                              IDS_POLICY_LABEL_REFRESH_INTERVAL);
 102   source->AddLocalizedString("labelStatus", IDS_POLICY_LABEL_STATUS);
 103   source->AddLocalizedString("showUnset", IDS_POLICY_SHOW_UNSET);
 104   source->AddLocalizedString("noPoliciesSet", IDS_POLICY_NO_POLICIES_SET);
 105   source->AddLocalizedString("headerScope", IDS_POLICY_HEADER_SCOPE);
 106   source->AddLocalizedString("headerLevel", IDS_POLICY_HEADER_LEVEL);
 107   source->AddLocalizedString("headerName", IDS_POLICY_HEADER_NAME);
 108   source->AddLocalizedString("headerValue", IDS_POLICY_HEADER_VALUE);
 109   source->AddLocalizedString("headerStatus", IDS_POLICY_HEADER_STATUS);
 110   source->AddLocalizedString("showExpandedValue",
 111                              IDS_POLICY_SHOW_EXPANDED_VALUE);
 112   source->AddLocalizedString("hideExpandedValue",
 113                              IDS_POLICY_HIDE_EXPANDED_VALUE);
 114   source->AddLocalizedString("scopeUser", IDS_POLICY_SCOPE_USER);
 115   source->AddLocalizedString("scopeDevice", IDS_POLICY_SCOPE_DEVICE);
 116   source->AddLocalizedString("levelRecommended", IDS_POLICY_LEVEL_RECOMMENDED);
 117   source->AddLocalizedString("levelMandatory", IDS_POLICY_LEVEL_MANDATORY);
 118   source->AddLocalizedString("ok", IDS_POLICY_OK);
 119   source->AddLocalizedString("unset", IDS_POLICY_UNSET);
 120   source->AddLocalizedString("unknown", IDS_POLICY_UNKNOWN);
 121
 122   source->SetJsonPath("strings.js");
 123
 124   // Add required resources.
 125   source->AddResourcePath("policy.css", IDR_POLICY_CSS);
 126   source->AddResourcePath("policy.js", IDR_POLICY_JS);
 127   source->AddResourcePath("uber_utils.js", IDR_UBER_UTILS_JS);
 128   source->SetDefaultResource(IDR_POLICY_HTML);
 129
 130   return source;
 131 }
 132
 133 // Formats the association state indicated by |data|. If |data| is NULL, the
 134 // state is considered to be UNMANAGED.
 135 base::string16 FormatAssociationState(const em::PolicyData* data) {
 136   if (data) {
 137     switch (data->state()) {
 138       case em::PolicyData::ACTIVE:
 139         return l10n_util::GetStringUTF16(IDS_POLICY_ASSOCIATION_STATE_ACTIVE);
 140       case em::PolicyData::UNMANAGED:
 141         return l10n_util::GetStringUTF16(
 142             IDS_POLICY_ASSOCIATION_STATE_UNMANAGED);
 143       case em::PolicyData::DEPROVISIONED:
 144         return l10n_util::GetStringUTF16(
 145             IDS_POLICY_ASSOCIATION_STATE_DEPROVISIONED);
 146     }
 147     NOTREACHED() << "Unknown state " << data->state();
 148   }
 149
 150   // Default to UNMANAGED for the case of missing policy or bad state enum.
 151   return l10n_util::GetStringUTF16(IDS_POLICY_ASSOCIATION_STATE_UNMANAGED);
 152 }
 153
 154 void GetStatusFromCore(const policy::CloudPolicyCore* core,
 155                        base::DictionaryValue* dict) {
 156   const policy::CloudPolicyStore* store = core->store();
 157   const policy::CloudPolicyClient* client = core->client();
 158   const policy::CloudPolicyRefreshScheduler* refresh_scheduler =
 159         core->refresh_scheduler();
 160
 161   // CloudPolicyStore errors take precedence to show in the status message.
 162   // Other errors (such as transient policy fetching problems) get displayed
 163   // only if CloudPolicyStore is in STATUS_OK.
 164   base::string16 status =
 165       policy::FormatStoreStatus(store->status(), store->validation_status());
 166   if (store->status() == policy::CloudPolicyStore::STATUS_OK) {
 167     if (client && client->status() != policy::DM_STATUS_SUCCESS)
 168       status = policy::FormatDeviceManagementStatus(client->status());
 169     else if (!store->is_managed())
 170       status = FormatAssociationState(store->policy());
 171   }
 172
 173   const em::PolicyData* policy = store->policy();
 174   std::string client_id = policy ? policy->device_id() : std::string();
 175   std::string username = policy ? policy->username() : std::string();
 176   base::TimeDelta refresh_interval =
 177       base::TimeDelta::FromMilliseconds(refresh_scheduler ?
 178           refresh_scheduler->refresh_delay() :
 179           policy::CloudPolicyRefreshScheduler::kDefaultRefreshDelayMs);
 180   base::Time last_refresh_time = refresh_scheduler ?
 181       refresh_scheduler->last_refresh() : base::Time();
 182
 183   bool no_error = store->status() == policy::CloudPolicyStore::STATUS_OK &&
 184                   client && client->status() == policy::DM_STATUS_SUCCESS;
 185   dict->SetBoolean("error", !no_error);
 186   dict->SetString("status", status);
 187   dict->SetString("clientId", client_id);
 188   dict->SetString("username", username);
 189   dict->SetString("refreshInterval",
 190                   ui::TimeFormat::Simple(ui::TimeFormat::FORMAT_DURATION,
 191                                          ui::TimeFormat::LENGTH_SHORT,
 192                                          refresh_interval));
 193   dict->SetString("timeSinceLastRefresh", last_refresh_time.is_null() ?
 194       l10n_util::GetStringUTF16(IDS_POLICY_NEVER_FETCHED) :
 195       ui::TimeFormat::Simple(ui::TimeFormat::FORMAT_ELAPSED,
 196                              ui::TimeFormat::LENGTH_SHORT,
 197                              base::Time::NowFromSystemTime() -
 198                                  last_refresh_time));
 199 }
 200
 201 void ExtractDomainFromUsername(base::DictionaryValue* dict) {
 202   std::string username;
 203   dict->GetString("username", &username);
 204   if (!username.empty())
 205     dict->SetString("domain", gaia::ExtractDomainName(username));
 206 }
 207
 208 // Utility function that returns a JSON serialization of the given |dict|.
 209 scoped_ptr<base::StringValue> DictionaryToJSONString(
 210     const base::DictionaryValue* dict) {
 211   std::string json_string;
 212   base::JSONWriter::WriteWithOptions(dict,
 213                                      base::JSONWriter::OPTIONS_PRETTY_PRINT,
 214                                      &json_string);
 215   return make_scoped_ptr(new base::StringValue(json_string));
 216 }
 217
 218 // Returns a copy of |value| with some values converted to a representation that
 219 // i18n_template.js will display in a nicer way.
 220 scoped_ptr<base::Value> CopyAndConvert(const base::Value* value) {
 221   const base::DictionaryValue* dict = NULL;
 222   if (value->GetAsDictionary(&dict))
 223     return DictionaryToJSONString(dict);
 224
 225   scoped_ptr<base::Value> copy(value->DeepCopy());
 226   base::ListValue* list = NULL;
 227   if (copy->GetAsList(&list)) {
 228     for (size_t i = 0; i < list->GetSize(); ++i) {
 229       if (list->GetDictionary(i, &dict))
 230         list->Set(i, DictionaryToJSONString(dict).release());
 231     }
 232   }
 233
 234   return copy.Pass();
 235 }
 236
 237 }  // namespace
 238
 239 // An interface for querying the status of cloud policy.
 240 class CloudPolicyStatusProvider {
 241  public:
 242   CloudPolicyStatusProvider();
 243   virtual ~CloudPolicyStatusProvider();
 244
 245   // Sets a callback to invoke upon status changes.
 246   void SetStatusChangeCallback(const base::Closure& callback);
 247
 248   virtual void GetStatus(base::DictionaryValue* dict);
 249
 250  protected:
 251   void NotifyStatusChange();
 252
 253  private:
 254   base::Closure callback_;
 255
 256   DISALLOW_COPY_AND_ASSIGN(CloudPolicyStatusProvider);
 257 };
 258
 259 // Status provider implementation that pulls cloud policy status from a
 260 // CloudPolicyCore instance provided at construction time. Also listens for
 261 // changes on that CloudPolicyCore and reports them through the status change
 262 // callback.
 263 class CloudPolicyCoreStatusProvider
 264     : public CloudPolicyStatusProvider,
 265       public policy::CloudPolicyStore::Observer {
 266  public:
 267   explicit CloudPolicyCoreStatusProvider(policy::CloudPolicyCore* core);
 268   ~CloudPolicyCoreStatusProvider() override;
 269
 270   // policy::CloudPolicyStore::Observer implementation.
 271   void OnStoreLoaded(policy::CloudPolicyStore* store) override;
 272   void OnStoreError(policy::CloudPolicyStore* store) override;
 273
 274  protected:
 275   // Policy status is read from the CloudPolicyClient, CloudPolicyStore and
 276   // CloudPolicyRefreshScheduler hosted by this |core_|.
 277   policy::CloudPolicyCore* core_;
 278
 279  private:
 280   DISALLOW_COPY_AND_ASSIGN(CloudPolicyCoreStatusProvider);
 281 };
 282
 283 // A cloud policy status provider for user policy.
 284 class UserPolicyStatusProvider : public CloudPolicyCoreStatusProvider {
 285  public:
 286   explicit UserPolicyStatusProvider(policy::CloudPolicyCore* core);
 287   ~UserPolicyStatusProvider() override;
 288
 289   // CloudPolicyCoreStatusProvider implementation.
 290   void GetStatus(base::DictionaryValue* dict) override;
 291
 292  private:
 293   DISALLOW_COPY_AND_ASSIGN(UserPolicyStatusProvider);
 294 };
 295
 296 #if defined(OS_CHROMEOS)
 297 // A cloud policy status provider for device policy.
 298 class DevicePolicyStatusProvider : public CloudPolicyCoreStatusProvider {
 299  public:
 300   explicit DevicePolicyStatusProvider(
 301       policy::BrowserPolicyConnectorChromeOS* connector);
 302   virtual ~DevicePolicyStatusProvider();
 303
 304   // CloudPolicyCoreStatusProvider implementation.
 305   virtual void GetStatus(base::DictionaryValue* dict) override;
 306
 307  private:
 308   std::string domain_;
 309
 310   DISALLOW_COPY_AND_ASSIGN(DevicePolicyStatusProvider);
 311 };
 312
 313 // A cloud policy status provider that reads policy status from the policy core
 314 // associated with the device-local account specified by |user_id| at
 315 // construction time. The indirection via user ID and
 316 // DeviceLocalAccountPolicyService is necessary because the device-local account
 317 // may go away any time behind the scenes, at which point the status message
 318 // text will indicate CloudPolicyStore::STATUS_BAD_STATE.
 319 class DeviceLocalAccountPolicyStatusProvider
 320     : public CloudPolicyStatusProvider,
 321       public policy::DeviceLocalAccountPolicyService::Observer {
 322  public:
 323   DeviceLocalAccountPolicyStatusProvider(
 324       const std::string& user_id,
 325       policy::DeviceLocalAccountPolicyService* service);
 326   virtual ~DeviceLocalAccountPolicyStatusProvider();
 327
 328   // CloudPolicyStatusProvider implementation.
 329   virtual void GetStatus(base::DictionaryValue* dict) override;
 330
 331   // policy::DeviceLocalAccountPolicyService::Observer implementation.
 332   virtual void OnPolicyUpdated(const std::string& user_id) override;
 333   virtual void OnDeviceLocalAccountsChanged() override;
 334
 335  private:
 336   const std::string user_id_;
 337   policy::DeviceLocalAccountPolicyService* service_;
 338
 339   DISALLOW_COPY_AND_ASSIGN(DeviceLocalAccountPolicyStatusProvider);
 340 };
 341 #endif
 342
 343 // The JavaScript message handler for the chrome://policy page.
 344 class PolicyUIHandler : public content::NotificationObserver,
 345                         public content::WebUIMessageHandler,
 346                         public policy::PolicyService::Observer {
 347  public:
 348   PolicyUIHandler();
 349   ~PolicyUIHandler() override;
 350
 351   // content::NotificationObserver implementation.
 352   void Observe(int type,
 353                const content::NotificationSource& source,
 354                const content::NotificationDetails& details) override;
 355
 356   // content::WebUIMessageHandler implementation.
 357   void RegisterMessages() override;
 358
 359   // policy::PolicyService::Observer implementation.
 360   void OnPolicyUpdated(const policy::PolicyNamespace& ns,
 361                        const policy::PolicyMap& previous,
 362                        const policy::PolicyMap& current) override;
 363
 364  private:
 365   // Send a dictionary containing the names of all known policies to the UI.
 366   void SendPolicyNames() const;
 367
 368   // Send information about the current policy values to the UI. For each policy
 369   // whose value has been set, a dictionary containing the value and additional
 370   // metadata is sent.
 371   void SendPolicyValues() const;
 372
 373   // Send the status of cloud policy to the UI. For each scope that has cloud
 374   // policy enabled (device and/or user), a dictionary containing status
 375   // information is sent.
 376   void SendStatus() const;
 377
 378   // Inserts a description of each policy in |policy_map| into |values|, using
 379   // the optional errors in |errors| to determine the status of each policy.
 380   void GetPolicyValues(const policy::PolicyMap& policy_map,
 381                        policy::PolicyErrorMap* errors,
 382                        base::DictionaryValue* values) const;
 383
 384   void GetChromePolicyValues(base::DictionaryValue* values) const;
 385
 386   void HandleInitialized(const base::ListValue* args);
 387   void HandleReloadPolicies(const base::ListValue* args);
 388
 389   void OnRefreshPoliciesDone() const;
 390
 391   policy::PolicyService* GetPolicyService() const;
 392
 393   bool initialized_;
 394   std::string device_domain_;
 395
 396   // Providers that supply status dictionaries for user and device policy,
 397   // respectively. These are created on initialization time as appropriate for
 398   // the platform (Chrome OS / desktop) and type of policy that is in effect.
 399   scoped_ptr<CloudPolicyStatusProvider> user_status_provider_;
 400   scoped_ptr<CloudPolicyStatusProvider> device_status_provider_;
 401
 402 #if defined(ENABLE_EXTENSIONS)
 403   content::NotificationRegistrar registrar_;
 404 #endif
 405
 406   base::WeakPtrFactory<PolicyUIHandler> weak_factory_;
 407
 408   DISALLOW_COPY_AND_ASSIGN(PolicyUIHandler);
 409 };
 410
 411 CloudPolicyStatusProvider::CloudPolicyStatusProvider() {
 412 }
 413
 414 CloudPolicyStatusProvider::~CloudPolicyStatusProvider() {
 415 }
 416
 417 void CloudPolicyStatusProvider::SetStatusChangeCallback(
 418     const base::Closure& callback) {
 419   callback_ = callback;
 420 }
 421
 422 void CloudPolicyStatusProvider::GetStatus(base::DictionaryValue* dict) {
 423 }
 424
 425 void CloudPolicyStatusProvider::NotifyStatusChange() {
 426   if (!callback_.is_null())
 427     callback_.Run();
 428 }
 429
 430 CloudPolicyCoreStatusProvider::CloudPolicyCoreStatusProvider(
 431     policy::CloudPolicyCore* core) : core_(core) {
 432   core_->store()->AddObserver(this);
 433   // TODO(bartfab): Add an observer that watches for client errors. Observing
 434   // core_->client() directly is not safe as the client may be destroyed and
 435   // (re-)created anytime if the user signs in or out on desktop platforms.
 436 }
 437
 438 CloudPolicyCoreStatusProvider::~CloudPolicyCoreStatusProvider() {
 439   core_->store()->RemoveObserver(this);
 440 }
 441
 442 void CloudPolicyCoreStatusProvider::OnStoreLoaded(
 443     policy::CloudPolicyStore* store) {
 444   NotifyStatusChange();
 445 }
 446
 447 void CloudPolicyCoreStatusProvider::OnStoreError(
 448     policy::CloudPolicyStore* store) {
 449   NotifyStatusChange();
 450 }
 451
 452 UserPolicyStatusProvider::UserPolicyStatusProvider(
 453     policy::CloudPolicyCore* core) : CloudPolicyCoreStatusProvider(core) {
 454 }
 455
 456 UserPolicyStatusProvider::~UserPolicyStatusProvider() {
 457 }
 458
 459 void UserPolicyStatusProvider::GetStatus(base::DictionaryValue* dict) {
 460   if (!core_->store()->is_managed())
 461     return;
 462   GetStatusFromCore(core_, dict);
 463   ExtractDomainFromUsername(dict);
 464 }
 465
 466 #if defined(OS_CHROMEOS)
 467 DevicePolicyStatusProvider::DevicePolicyStatusProvider(
 468     policy::BrowserPolicyConnectorChromeOS* connector)
 469       : CloudPolicyCoreStatusProvider(
 470             connector->GetDeviceCloudPolicyManager()->core()) {
 471   domain_ = connector->GetEnterpriseDomain();
 472 }
 473
 474 DevicePolicyStatusProvider::~DevicePolicyStatusProvider() {
 475 }
 476
 477 void DevicePolicyStatusProvider::GetStatus(base::DictionaryValue* dict) {
 478   GetStatusFromCore(core_, dict);
 479   dict->SetString("domain", domain_);
 480 }
 481
 482 DeviceLocalAccountPolicyStatusProvider::DeviceLocalAccountPolicyStatusProvider(
 483     const std::string& user_id,
 484     policy::DeviceLocalAccountPolicyService* service)
 485       : user_id_(user_id),
 486         service_(service) {
 487   service_->AddObserver(this);
 488 }
 489
 490 DeviceLocalAccountPolicyStatusProvider::
 491     ~DeviceLocalAccountPolicyStatusProvider() {
 492   service_->RemoveObserver(this);
 493 }
 494
 495 void DeviceLocalAccountPolicyStatusProvider::GetStatus(
 496     base::DictionaryValue* dict) {
 497   const policy::DeviceLocalAccountPolicyBroker* broker =
 498       service_->GetBrokerForUser(user_id_);
 499   if (broker) {
 500     GetStatusFromCore(broker->core(), dict);
 501   } else {
 502     dict->SetBoolean("error", true);
 503     dict->SetString("status",
 504                     policy::FormatStoreStatus(
 505                         policy::CloudPolicyStore::STATUS_BAD_STATE,
 506                         policy::CloudPolicyValidatorBase::VALIDATION_OK));
 507     dict->SetString("username", std::string());
 508   }
 509   ExtractDomainFromUsername(dict);
 510   dict->SetBoolean("publicAccount", true);
 511 }
 512
 513 void DeviceLocalAccountPolicyStatusProvider::OnPolicyUpdated(
 514     const std::string& user_id) {
 515   if (user_id == user_id_)
 516     NotifyStatusChange();
 517 }
 518
 519 void DeviceLocalAccountPolicyStatusProvider::OnDeviceLocalAccountsChanged() {
 520   NotifyStatusChange();
 521 }
 522 #endif
 523
 524 PolicyUIHandler::PolicyUIHandler()
 525     : initialized_(false),
 526       weak_factory_(this) {
 527 }
 528
 529 PolicyUIHandler::~PolicyUIHandler() {
 530   GetPolicyService()->RemoveObserver(policy::POLICY_DOMAIN_CHROME, this);
 531   GetPolicyService()->RemoveObserver(policy::POLICY_DOMAIN_EXTENSIONS, this);
 532 }
 533
 534 void PolicyUIHandler::RegisterMessages() {
 535 #if defined(OS_CHROMEOS)
 536   policy::BrowserPolicyConnectorChromeOS* connector =
 537       g_browser_process->platform_part()->browser_policy_connector_chromeos();
 538   if (connector->IsEnterpriseManaged())
 539     device_status_provider_.reset(new DevicePolicyStatusProvider(connector));
 540
 541   const user_manager::UserManager* user_manager =
 542       user_manager::UserManager::Get();
 543   if (user_manager->IsLoggedInAsPublicAccount()) {
 544     policy::DeviceLocalAccountPolicyService* local_account_service =
 545         connector->GetDeviceLocalAccountPolicyService();
 546     if (local_account_service) {
 547       user_status_provider_.reset(
 548           new DeviceLocalAccountPolicyStatusProvider(
 549               user_manager->GetLoggedInUser()->email(), local_account_service));
 550     }
 551   } else {
 552     policy::UserCloudPolicyManagerChromeOS* user_cloud_policy_manager =
 553         policy::UserCloudPolicyManagerFactoryChromeOS::GetForProfile(
 554             Profile::FromWebUI(web_ui()));
 555     if (user_cloud_policy_manager) {
 556       user_status_provider_.reset(
 557           new UserPolicyStatusProvider(user_cloud_policy_manager->core()));
 558     }
 559   }
 560 #else
 561   policy::UserCloudPolicyManager* user_cloud_policy_manager =
 562       policy::UserCloudPolicyManagerFactory::GetForBrowserContext(
 563           web_ui()->GetWebContents()->GetBrowserContext());
 564   if (user_cloud_policy_manager) {
 565     user_status_provider_.reset(
 566         new UserPolicyStatusProvider(user_cloud_policy_manager->core()));
 567   }
 568 #endif
 569
 570   if (!user_status_provider_.get())
 571     user_status_provider_.reset(new CloudPolicyStatusProvider());
 572   if (!device_status_provider_.get())
 573     device_status_provider_.reset(new CloudPolicyStatusProvider());
 574
 575   base::Closure update_callback(base::Bind(&PolicyUIHandler::SendStatus,
 576                                            base::Unretained(this)));
 577   user_status_provider_->SetStatusChangeCallback(update_callback);
 578   device_status_provider_->SetStatusChangeCallback(update_callback);
 579   GetPolicyService()->AddObserver(policy::POLICY_DOMAIN_CHROME, this);
 580   GetPolicyService()->AddObserver(policy::POLICY_DOMAIN_EXTENSIONS, this);
 581
 582 #if defined(ENABLE_EXTENSIONS)
 583   registrar_.Add(this,
 584                  extensions::NOTIFICATION_EXTENSION_LOADED_DEPRECATED,
 585                  content::NotificationService::AllSources());
 586   registrar_.Add(this,
 587                  extensions::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
 588                  content::NotificationService::AllSources());
 589 #endif
 590
 591   web_ui()->RegisterMessageCallback(
 592       "initialized",
 593       base::Bind(&PolicyUIHandler::HandleInitialized, base::Unretained(this)));
 594   web_ui()->RegisterMessageCallback(
 595       "reloadPolicies",
 596       base::Bind(&PolicyUIHandler::HandleReloadPolicies,
 597                  base::Unretained(this)));
 598 }
 599
 600 void PolicyUIHandler::Observe(int type,
 601                               const content::NotificationSource& source,
 602                               const content::NotificationDetails& details) {
 603 #if defined(ENABLE_EXTENSIONS)
 604   DCHECK(type == extensions::NOTIFICATION_EXTENSION_LOADED_DEPRECATED ||
 605          type == extensions::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED);
 606   SendPolicyNames();
 607   SendPolicyValues();
 608 #endif
 609 }
 610
 611 void PolicyUIHandler::OnPolicyUpdated(const policy::PolicyNamespace& ns,
 612                                       const policy::PolicyMap& previous,
 613                                       const policy::PolicyMap& current) {
 614   SendPolicyValues();
 615 }
 616
 617 void PolicyUIHandler::SendPolicyNames() const {
 618   base::DictionaryValue names;
 619
 620   Profile* profile = Profile::FromWebUI(web_ui());
 621   policy::SchemaRegistry* registry =
 622       policy::SchemaRegistryServiceFactory::GetForContext(
 623           profile->GetOriginalProfile())->registry();
 624   scoped_refptr<policy::SchemaMap> schema_map = registry->schema_map();
 625
 626   // Add Chrome policy names.
 627   base::DictionaryValue* chrome_policy_names = new base::DictionaryValue;
 628   policy::PolicyNamespace chrome_ns(policy::POLICY_DOMAIN_CHROME, "");
 629   const policy::Schema* chrome_schema = schema_map->GetSchema(chrome_ns);
 630   for (policy::Schema::Iterator it = chrome_schema->GetPropertiesIterator();
 631        !it.IsAtEnd(); it.Advance()) {
 632     chrome_policy_names->SetBoolean(it.key(), true);
 633   }
 634   names.Set("chromePolicyNames", chrome_policy_names);
 635
 636 #if !defined(OS_ANDROID) && !defined(OS_IOS)
 637   // Add extension policy names.
 638   base::DictionaryValue* extension_policy_names = new base::DictionaryValue;
 639
 640   extensions::ExtensionSystem* extension_system =
 641       extensions::ExtensionSystem::Get(profile);
 642   const extensions::ExtensionSet* extensions =
 643       extension_system->extension_service()->extensions();
 644
 645   for (extensions::ExtensionSet::const_iterator it = extensions->begin();
 646        it != extensions->end(); ++it) {
 647     const extensions::Extension* extension = it->get();
 648     // Skip this extension if it's not an enterprise extension.
 649     if (!extension->manifest()->HasPath(
 650         extensions::manifest_keys::kStorageManagedSchema))
 651       continue;
 652     base::DictionaryValue* extension_value = new base::DictionaryValue;
 653     extension_value->SetString("name", extension->name());
 654     const policy::Schema* schema =
 655         schema_map->GetSchema(policy::PolicyNamespace(
 656             policy::POLICY_DOMAIN_EXTENSIONS, extension->id()));
 657     base::DictionaryValue* policy_names = new base::DictionaryValue;
 658     if (schema && schema->valid()) {
 659       // Get policy names from the extension's policy schema.
 660       // Store in a map, not an array, for faster lookup on JS side.
 661       for (policy::Schema::Iterator prop = schema->GetPropertiesIterator();
 662            !prop.IsAtEnd(); prop.Advance()) {
 663         policy_names->SetBoolean(prop.key(), true);
 664       }
 665     }
 666     extension_value->Set("policyNames", policy_names);
 667     extension_policy_names->Set(extension->id(), extension_value);
 668   }
 669   names.Set("extensionPolicyNames", extension_policy_names);
 670 #endif
 671
 672   web_ui()->CallJavascriptFunction("policy.Page.setPolicyNames", names);
 673 }
 674
 675 void PolicyUIHandler::SendPolicyValues() const {
 676   base::DictionaryValue all_policies;
 677
 678   // Add Chrome policy values.
 679   base::DictionaryValue* chrome_policies = new base::DictionaryValue;
 680   GetChromePolicyValues(chrome_policies);
 681   all_policies.Set("chromePolicies", chrome_policies);
 682
 683 #if !defined(OS_ANDROID) && !defined(OS_IOS)
 684   // Add extension policy values.
 685   extensions::ExtensionSystem* extension_system =
 686       extensions::ExtensionSystem::Get(Profile::FromWebUI(web_ui()));
 687   const extensions::ExtensionSet* extensions =
 688       extension_system->extension_service()->extensions();
 689   base::DictionaryValue* extension_values = new base::DictionaryValue;
 690
 691   for (extensions::ExtensionSet::const_iterator it = extensions->begin();
 692        it != extensions->end(); ++it) {
 693     const extensions::Extension* extension = it->get();
 694     // Skip this extension if it's not an enterprise extension.
 695     if (!extension->manifest()->HasPath(
 696         extensions::manifest_keys::kStorageManagedSchema))
 697       continue;
 698     base::DictionaryValue* extension_policies = new base::DictionaryValue;
 699     policy::PolicyNamespace policy_namespace = policy::PolicyNamespace(
 700         policy::POLICY_DOMAIN_EXTENSIONS, extension->id());
 701     policy::PolicyErrorMap empty_error_map;
 702     GetPolicyValues(GetPolicyService()->GetPolicies(policy_namespace),
 703                     &empty_error_map, extension_policies);
 704     extension_values->Set(extension->id(), extension_policies);
 705   }
 706   all_policies.Set("extensionPolicies", extension_values);
 707 #endif
 708   web_ui()->CallJavascriptFunction("policy.Page.setPolicyValues", all_policies);
 709 }
 710
 711 void PolicyUIHandler::GetPolicyValues(const policy::PolicyMap& map,
 712                                       policy::PolicyErrorMap* errors,
 713                                       base::DictionaryValue* values) const {
 714   for (policy::PolicyMap::const_iterator entry = map.begin();
 715        entry != map.end(); ++entry) {
 716     base::DictionaryValue* value = new base::DictionaryValue;
 717     value->Set("value", CopyAndConvert(entry->second.value).release());
 718     if (entry->second.scope == policy::POLICY_SCOPE_USER)
 719       value->SetString("scope", "user");
 720     else
 721       value->SetString("scope", "machine");
 722     if (entry->second.level == policy::POLICY_LEVEL_RECOMMENDED)
 723       value->SetString("level", "recommended");
 724     else
 725       value->SetString("level", "mandatory");
 726     base::string16 error = errors->GetErrors(entry->first);
 727     if (!error.empty())
 728       value->SetString("error", error);
 729     values->Set(entry->first, value);
 730   }
 731 }
 732
 733 void PolicyUIHandler::GetChromePolicyValues(
 734     base::DictionaryValue* values) const {
 735   policy::PolicyService* policy_service = GetPolicyService();
 736   policy::PolicyMap map;
 737
 738   // Make a copy that can be modified, since some policy values are modified
 739   // before being displayed.
 740   map.CopyFrom(policy_service->GetPolicies(
 741       policy::PolicyNamespace(policy::POLICY_DOMAIN_CHROME, std::string())));
 742
 743   // Get a list of all the errors in the policy values.
 744   const policy::ConfigurationPolicyHandlerList* handler_list =
 745       g_browser_process->browser_policy_connector()->GetHandlerList();
 746   policy::PolicyErrorMap errors;
 747   handler_list->ApplyPolicySettings(map, NULL, &errors);
 748
 749   // Convert dictionary values to strings for display.
 750   handler_list->PrepareForDisplaying(&map);
 751
 752   GetPolicyValues(map, &errors, values);
 753 }
 754
 755 void PolicyUIHandler::SendStatus() const {
 756   scoped_ptr<base::DictionaryValue> device_status(new base::DictionaryValue);
 757   device_status_provider_->GetStatus(device_status.get());
 758   if (!device_domain_.empty())
 759     device_status->SetString("domain", device_domain_);
 760   scoped_ptr<base::DictionaryValue> user_status(new base::DictionaryValue);
 761   user_status_provider_->GetStatus(user_status.get());
 762   std::string username;
 763   user_status->GetString("username", &username);
 764   if (!username.empty())
 765     user_status->SetString("domain", gaia::ExtractDomainName(username));
 766
 767   base::DictionaryValue status;
 768   if (!device_status->empty())
 769     status.Set("device", device_status.release());
 770   if (!user_status->empty())
 771     status.Set("user", user_status.release());
 772
 773   web_ui()->CallJavascriptFunction("policy.Page.setStatus", status);
 774 }
 775
 776 void PolicyUIHandler::HandleInitialized(const base::ListValue* args) {
 777   SendPolicyNames();
 778   SendPolicyValues();
 779   SendStatus();
 780 }
 781
 782 void PolicyUIHandler::HandleReloadPolicies(const base::ListValue* args) {
 783   GetPolicyService()->RefreshPolicies(
 784       base::Bind(&PolicyUIHandler::OnRefreshPoliciesDone,
 785                  weak_factory_.GetWeakPtr()));
 786 }
 787
 788 void PolicyUIHandler::OnRefreshPoliciesDone() const {
 789   web_ui()->CallJavascriptFunction("policy.Page.reloadPoliciesDone");
 790 }
 791
 792 policy::PolicyService* PolicyUIHandler::GetPolicyService() const {
 793   return policy::ProfilePolicyConnectorFactory::GetForProfile(
 794       Profile::FromWebUI(web_ui()))->policy_service();
 795 }
 796
 797 PolicyUI::PolicyUI(content::WebUI* web_ui) : WebUIController(web_ui) {
 798   web_ui->AddMessageHandler(new PolicyUIHandler);
 799   content::WebUIDataSource::Add(Profile::FromWebUI(web_ui),
 800                                 CreatePolicyUIHTMLSource());
 801 }
 802
 803 PolicyUI::~PolicyUI() {
 804 }