[cros] Report captive portal message when we suspect that might be the case.

chrome/browser/chromeos/login/existing_user_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/chromeos/login/existing_user_controller.h"
 
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
@@ skipping 32 matching lines @@
 const char kSettingsSyncLoginURL[] = "chrome://settings/personal";
 
 // URL that will be opened on when user logs in first time on the device.
 const char kGetStartedURL[] =
     "chrome-extension://cbmhffdpiobpchciemffincgahkkljig/index.html";
 
 // URL for account creation.
 const char kCreateAccountURL[] =
     "https://www.google.com/accounts/NewAccount?service=mail";
 
+// Landing URL when launching Guest mode to fix captive portal.
+const char kCaptivePortalLaunchURL[] = "http://www.google.com/";
+
 // Used to handle the asynchronous response of deleting a cryptohome directory.
 class RemoveAttempt : public CryptohomeLibrary::Delegate {
  public:
   explicit RemoveAttempt(const std::string& user_email)
       : user_email_(user_email) {
     if (CrosLibrary::Get()->EnsureLoaded()) {
       CrosLibrary::Get()->GetCryptohomeLibrary()->AsyncRemove(
           user_email_, this);
     }
   }
@@ skipping 129 matching lines @@
 ////////////////////////////////////////////////////////////////////////////////
 // ExistingUserController, LoginDisplay::Delegate implementation:
 //
 
 void ExistingUserController::CreateAccount() {
   guest_mode_url_ =
       google_util::AppendGoogleLocaleParam(GURL(kCreateAccountURL));
   LoginAsGuest();
 }
 
+void ExistingUserController::FixCaptivePortal() {
+  guest_mode_url_ = GURL(kCaptivePortalLaunchURL);
+  LoginAsGuest();
+}
+
 void ExistingUserController::Login(const std::string& username,
                                    const std::string& password) {
   if (username.empty() || password.empty())
     return;
   SetStatusAreaEnabled(false);
   // Disable clicking on other windows.
   login_display_->SetUIEnabled(false);
 
   BootTimesLoader::Get()->RecordLoginAttempted();
 
@@ skipping 109 matching lines @@
         window->SetIsAlwaysOnTop(true);
         window->Show();
       } else {
         LOG(WARNING) << "No captcha image url was found?";
         ShowError(IDS_LOGIN_ERROR_AUTHENTICATING, error);
       }
     } else if (failure.reason() == LoginFailure::NETWORK_AUTH_FAILED &&
                failure.error().state() ==
                    GoogleServiceAuthError::HOSTED_NOT_ALLOWED) {
       ShowError(IDS_LOGIN_ERROR_AUTHENTICATING_HOSTED, error);
+    } else if (failure.reason() == LoginFailure::NETWORK_AUTH_FAILED &&
+               failure.error().state() ==
+                   GoogleServiceAuthError::SERVICE_UNAVAILABLE) {
+      // SERVICE_UNAVAILABLE is generated in 2 cases:
+      // 1. ClientLogin returns ServiceUnavailable code.
+      // 2. Internet connectivity may be behind the captive portal.
+      // Suggesting user to try sign in to a portal in Guest mode.
+      ShowError(IDS_LOGIN_ERROR_CAPTIVE_PORTAL, error);
     } else {
       if (!UserManager::Get()->IsKnownUser(last_login_attempt_username_))
         ShowError(IDS_LOGIN_ERROR_AUTHENTICATING_NEW, error);
       else
         ShowError(IDS_LOGIN_ERROR_AUTHENTICATING, error);
     }
   }
 
   // Reenable clicking on other windows and status area.
   login_display_->SetUIEnabled(true);
@@ skipping 181 matching lines @@
       help_topic_id = login_performer_->login_timed_out() ?
           HelpAppLauncher::HELP_CANT_ACCESS_ACCOUNT_OFFLINE :
           HelpAppLauncher::HELP_CANT_ACCESS_ACCOUNT;
       break;
   }
 
   login_display_->ShowError(error_id, num_login_attempts_, help_topic_id);
 }
 
 }  // namespace chromeos