cros: Implement cryptohome backend for pin.

chrome/browser/chromeos/login/lock/screen_locker.cc

 // Copyright 2014 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/lock/screen_locker.h"
 
 #include <string>
 #include <vector>
 
 #include "ash/login/views/lock_screen.h"
@@ skipping 13 matching lines @@
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/user_metrics.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
 #include "chrome/browser/chromeos/login/lock/webui_screen_locker.h"
+#include "chrome/browser/chromeos/login/quick_unlock/fingerprint_storage.h"
+#include "chrome/browser/chromeos/login/quick_unlock/pin_backend.h"
 #include "chrome/browser/chromeos/login/quick_unlock/quick_unlock_factory.h"
 #include "chrome/browser/chromeos/login/quick_unlock/quick_unlock_storage.h"
 #include "chrome/browser/chromeos/login/session/user_session_manager.h"
 #include "chrome/browser/chromeos/login/supervised/supervised_user_authentication.h"
 #include "chrome/browser/chromeos/login/ui/user_adding_screen.h"
 #include "chrome/browser/chromeos/login/users/chrome_user_manager.h"
 #include "chrome/browser/chromeos/login/users/supervised_user_manager.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/signin/easy_unlock_service.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
@@ skipping 276 matching lines @@
           user_context.GetAccountId());
     }
 
     // Reset the number of PIN attempts available to the user. We always do this
     // because:
     // 1. If the user signed in with a PIN, that means they should be able to
     //    continue signing in with a PIN.
     // 2. If the user signed in with cryptohome keys, then the PIN timeout is
     //    going to be reset as well, so it is safe to reset the unlock attempt
     //    count.
+    quick_unlock::PinBackend::NotifyAuthentication(user_context.GetAccountId());
     quick_unlock::QuickUnlockStorage* quick_unlock_storage =
         quick_unlock::QuickUnlockFactory::GetForUser(user);
     if (quick_unlock_storage) {
-      quick_unlock_storage->pin_storage()->ResetUnlockAttemptCount();
       quick_unlock_storage->fingerprint_storage()->ResetUnlockAttemptCount();
     }
 
     UserSessionManager::GetInstance()->UpdateEasyUnlockKeys(user_context);
   } else {
     NOTREACHED() << "Logged in user not found.";
   }
 
   authentication_capture_.reset(new AuthenticationParametersCapture());
   authentication_capture_->user_context = user_context;
@@ skipping 47 matching lines @@
   if (user) {
     // Check to see if the user submitted a PIN and it is valid.
     const std::string pin = user_context.GetKey()->GetSecret();
 
     // We only want to try authenticating the pin if it is a number,
     // otherwise we will timeout PIN if the user enters their account password
     // incorrectly more than a few times.
     int dummy_value;
     if (unlock_attempt_type_ == AUTH_PIN &&
         base::StringToInt(pin, &dummy_value)) {
-      quick_unlock::QuickUnlockStorage* quick_unlock_storage =
-          quick_unlock::QuickUnlockFactory::GetForUser(user);
-      if (quick_unlock_storage &&
-          quick_unlock_storage->TryAuthenticatePin(pin)) {
-        OnAuthSuccess(user_context);
-        return;
-      }
+      quick_unlock::PinBackend::TryAuthenticate(
+          user_context.GetAccountId(), pin,
+          base::Bind(&ScreenLocker::OnPinAttemptDone,
+                     weak_factory_.GetWeakPtr(), user_context));
+      return;
     }
+  }
 
+  ContinueAuthenticate(user_context);
+}
+
+void ScreenLocker::OnPinAttemptDone(const UserContext& user_context,
+                                    bool success) {
+  if (success)
+    OnAuthSuccess(user_context);
+  else
+    ContinueAuthenticate(user_context);
+}
+
+void ScreenLocker::ContinueAuthenticate(
+    const chromeos::UserContext& user_context) {
+  const user_manager::User* user = FindUnlockUser(user_context.GetAccountId());
+  if (user) {
     // Special case: supervised users. Use special authenticator.
     if (user->GetType() == user_manager::USER_TYPE_SUPERVISED) {
       UserContext updated_context = ChromeUserManager::Get()
                                         ->GetSupervisedUserManager()
                                         ->GetAuthentication()
                                         ->TransformKey(user_context);
       BrowserThread::PostTask(
           BrowserThread::UI, FROM_HERE,
           base::Bind(&ExtendedAuthenticator::AuthenticateToCheck,
                      extended_authenticator_.get(), updated_context,
@@ skipping 299 matching lines @@
     }
   }
 
   if (auth_status_consumer_) {
     AuthFailure failure(AuthFailure::UNLOCK_FAILED);
     auth_status_consumer_->OnAuthFailure(failure);
   }
 }
 
 }  // namespace chromeos