Allow re-enrollment to the same domain in case of policy data loss.

chrome/browser/chromeos/login/existing_user_controller.cc

 // Copyright (c) 2012 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/chromeos/login/existing_user_controller.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 454 matching lines @@
   if (command_line->HasSwitch(switches::kEnableDevicePolicy)) {
     OwnershipService::GetSharedInstance()->GetStatusAsync(
         base::Bind(&ExistingUserController::OnEnrollmentOwnershipCheckCompleted,
                    weak_factory_.GetWeakPtr()));
   }
 }
 
 void ExistingUserController::OnEnrollmentOwnershipCheckCompleted(
     OwnershipService::Status status,
     bool current_user_is_owner) {
-  if (status == OwnershipService::OWNERSHIP_NONE)
+  if (status == OwnershipService::OWNERSHIP_NONE) {
     ShowEnrollmentScreen(false, std::string());
+  } else if (status == OwnershipService::OWNERSHIP_TAKEN) {
+    // On a device that is already owned we might want to allow users to
+    // re-enroll if the policy information has been screwed.

[Mattias Nissler (ping if slow), 2012/06/08 13:13:44]

s/has been screwed/is invalid/, we really don't know what happened :)

[pastarmovj, 2012/06/08 15:07:12]

Done.

+    CrosSettingsProvider::TrustedStatus trusted_status =
+        CrosSettings::Get()->PrepareTrustedValues(
+            base::Bind(
+                &ExistingUserController::OnEnrollmentOwnershipCheckCompleted,
+                weak_factory_.GetWeakPtr(), status, current_user_is_owner));
+    if (trusted_status == CrosSettingsProvider::PERMANENTLY_UNTRUSTED)
+      ShowEnrollmentScreen(false, std::string());
+  } else {
+    // OwnershipService::GetStatusAsync is supposed to return either
+    // OWNERSHIP_NONE or OWNERSHIP_TAKEN.
+    NOTREACHED();
+  }
 }
 
 void ExistingUserController::ShowEnrollmentScreen(bool is_auto_enrollment,
                                                   const std::string& user) {
   DictionaryValue* params = NULL;
   if (is_auto_enrollment) {
     params = new DictionaryValue;
     params->SetBoolean("is_auto_enrollment", true);
     params->SetString("user", user);
   }
@@ skipping 411 matching lines @@
   // Invalidate OAuth token, since it can't be correct after password is
   // changed.
   UserManager::Get()->SaveUserOAuthStatus(username,
                                           User::OAUTH_TOKEN_STATUS_INVALID);
 
   login_display_->SetUIEnabled(true);
   login_display_->ShowGaiaPasswordChanged(username);
 }
 
 }  // namespace chromeos