Add initial device policy infrastructure.

chrome/browser/policy/device_policy_controller.cc

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/policy/device_policy_controller.h"
+
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/chromeos/login/ownership_service.h"
+#include "chrome/browser/chromeos/login/user_manager.h"
+#include "chrome/browser/net/gaia/token_service.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/common/net/gaia/gaia_constants.h"
+#include "chrome/common/notification_service.h"
+#include "chrome/common/notification_type.h"
+
+namespace policy {
+
+DevicePolicyController::DevicePolicyController()
+    : should_register_(false) {
+  registrar_.Add(this,
+                 NotificationType::TOKEN_AVAILABLE,
+                 NotificationService::AllSources());
+  registrar_.Add(this,
+                 NotificationType::LOGIN_USER_CHANGED,
+                 NotificationService::AllSources());
+  registrar_.Add(this,
+                 NotificationType::OWNERSHIP_TAKEN,
+                 NotificationService::AllSources());
+  registrar_.Add(this,
+                 NotificationType::OWNER_KEY_FETCH_ATTEMPT_SUCCEEDED,
+                 NotificationService::AllSources());
+
+  // TODO(mnissler): Figure out how to read the machine id.
+  machine_id_ = "dummy-cros-machine-ID";
+}
+
+std::string DevicePolicyController::GetDeviceToken() {
+  return device_token_;
+}
+
+std::string DevicePolicyController::GetDeviceID() {
+  return machine_id_;
+}
+
+bool DevicePolicyController::GetCredentials(std::string* username,
+                                            std::string* auth_token) {
+  // Only register if requested.
+  if (!should_register_)
+    return false;
+
+  // Need to know the machine id.
+  if (machine_id_.empty())
+    return false;
+
+  // Only fetch policy when the owner is logged in.
+  if (!chromeos::OwnershipService::GetSharedInstance()->CurrentUserIsOwner())
+    return false;
+
+  // We need to know about the profile of the logged in user.
+  Profile* profile = g_browser_process->profile_manager()->GetDefaultProfile();
+  if (!profile) {
+    NOTREACHED() << "Current user profile inaccessible";
+    return false;
+  }
+
+  *username = chromeos::UserManager::Get()->logged_in_user().email();
+  *auth_token = profile->GetTokenService()->GetTokenForService(
+      GaiaConstants::kDeviceManagementService);
+
+  return !username->empty() && !auth_token->empty();
+}
+
+void DevicePolicyController::OnTokenAvailable(const std::string& token) {
+  DCHECK(!machine_id_.empty());
+
+  // Reset registration flag, so we only attempt registration once.
+  should_register_ = false;
+
+  device_token_ = token;
+  NotifyTokenChanged();
+}
+
+void DevicePolicyController::CheckAndTriggerFetch() {
+  std::string username;
+  std::string auth_token;
+  if (GetCredentials(&username, &auth_token))
+    NotifyAuthChanged();
+}
+
+void DevicePolicyController::Observe(NotificationType type,
+                                     const NotificationSource& source,
+                                     const NotificationDetails& details) {
+  if (type == NotificationType::TOKEN_AVAILABLE) {
+    const TokenService::TokenAvailableDetails* token_details =
+        Details<const TokenService::TokenAvailableDetails>(details).ptr();
+    if (token_details->service() == GaiaConstants::kDeviceManagementService)
+      CheckAndTriggerFetch();
+  } else if (type == NotificationType::LOGIN_USER_CHANGED) {
+    should_register_ = false;
+    CheckAndTriggerFetch();
+  } else if (type == NotificationType::OWNERSHIP_TAKEN) {
+    should_register_ = true;
+    CheckAndTriggerFetch();
+  } else if (type == NotificationType::OWNER_KEY_FETCH_ATTEMPT_SUCCEEDED) {
+    CheckAndTriggerFetch();
+  } else {
+    NOTREACHED();
+  }
+}
+
+}  // namespace policy