[cros login] Split login related classes into subfolders.

chrome/browser/chromeos/login/tpm_password_fetcher.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/tpm_password_fetcher.h"
-
-#include "base/bind.h"
-#include "base/compiler_specific.h"
-#include "base/message_loop/message_loop.h"
-#include "chromeos/dbus/cryptohome_client.h"
-#include "chromeos/dbus/dbus_thread_manager.h"
-
-namespace chromeos {
-
-namespace {
-
-// Interval between TPM password checks.
-const int kTpmCheckIntervalMs = 500;
-
-}  // namespace
-
-TpmPasswordFetcher::TpmPasswordFetcher(TpmPasswordFetcherDelegate* delegate)
-    : weak_factory_(this),
-      delegate_(delegate) {
-  DCHECK(delegate_);
-}
-
-TpmPasswordFetcher::~TpmPasswordFetcher() {
-}
-
-void TpmPasswordFetcher::Fetch() {
-  // Since this method is also called directly.
-  weak_factory_.InvalidateWeakPtrs();
-
-  DBusThreadManager::Get()->GetCryptohomeClient()->TpmIsReady(
-      base::Bind(&TpmPasswordFetcher::OnTpmIsReady,
-                 weak_factory_.GetWeakPtr()));
-}
-
-void TpmPasswordFetcher::OnTpmIsReady(DBusMethodCallStatus call_status,
-                                      bool tpm_is_ready) {
-  if (call_status == DBUS_METHOD_CALL_SUCCESS && tpm_is_ready) {
-    DBusThreadManager::Get()->GetCryptohomeClient()->TpmGetPassword(
-        base::Bind(&TpmPasswordFetcher::OnTpmGetPassword,
-                   weak_factory_.GetWeakPtr()));
-  } else {
-    // Password hasn't been acquired, reschedule fetch.
-    RescheduleFetch();
-  }
-}
-
-void TpmPasswordFetcher::OnTpmGetPassword(DBusMethodCallStatus call_status,
-                                          const std::string& password) {
-  if (call_status == DBUS_METHOD_CALL_SUCCESS) {
-    if (password.empty()) {
-      // For a fresh OOBE flow TPM is uninitialized,
-      // ownership process is started at the EULA screen,
-      // password is cleared after EULA is accepted.
-      LOG(ERROR) << "TPM returned an empty password.";
-    }
-    delegate_->OnPasswordFetched(password);
-  } else {
-    // Password hasn't been acquired, reschedule fetch.
-    RescheduleFetch();
-  }
-}
-
-void TpmPasswordFetcher::RescheduleFetch() {
-  base::MessageLoop::current()->PostDelayedTask(
-      FROM_HERE,
-      base::Bind(&TpmPasswordFetcher::Fetch, weak_factory_.GetWeakPtr()),
-      base::TimeDelta::FromMilliseconds(kTpmCheckIntervalMs));
-}
-
-}  // namespace chromeos