Move chromeos/tpm_* to chromeos/tpm

chromeos/tpm_token_loader.h

-// 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.
-
-#ifndef CHROMEOS_TPM_TOKEN_LOADER_H_
-#define CHROMEOS_TPM_TOKEN_LOADER_H_
-
-#include <string>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
-#include "base/observer_list.h"
-#include "base/threading/thread_checker.h"
-#include "chromeos/chromeos_export.h"
-#include "chromeos/login/login_state.h"
-
-namespace base {
-class SequencedTaskRunner;
-}
-
-namespace chromeos {
-
-struct TPMTokenInfo;
-class TPMTokenInfoGetter;
-
-// This class is responsible for loading the TPM backed token for the system
-// slot when the user logs in. It is expected to be constructed on the UI thread
-// and public methods should all be called from the UI thread.
-// When the TPM token is loaded, or if the TPM should stay disabled for the
-// session, the observers are notified using |OnTPMTokenReady|.
-// Note: This currently initializes the token with the hard coded default id 0.
-// See CryptohomeClient::OnPkcs11GetTpmTokenInfo.
-class CHROMEOS_EXPORT TPMTokenLoader : public LoginState::Observer {
- public:
-  enum TPMTokenStatus {
-    TPM_TOKEN_STATUS_UNDETERMINED,
-    TPM_TOKEN_STATUS_ENABLED,
-    TPM_TOKEN_STATUS_DISABLED
-  };
-
-  typedef base::Callback<void(bool)> TPMReadyCallback;
-  typedef std::vector<TPMReadyCallback> TPMReadyCallbackList;
-
-  // Sets the global instance. Must be called before any calls to Get().
-  // The global instance will immediately start observing |LoginState|.
-  static void Initialize();
-
-  // Sets the global. stubbed out, instance. To be used in tests.
-  static void InitializeForTest();
-
-  // Destroys the global instance.
-  static void Shutdown();
-
-  // Gets the global instance. Initialize() must be called before this.
-  static TPMTokenLoader* Get();
-
-  // Returns true if the global instance has been initialized.
-  static bool IsInitialized();
-
-  // |crypto_task_runner| is the task runner that any synchronous crypto calls
-  // should be made from, e.g. in Chrome this is the IO thread. Must be called
-  // after the thread is started. When called, this will attempt to start TPM
-  // token loading.
-  void SetCryptoTaskRunner(
-      const scoped_refptr<base::SequencedTaskRunner>& crypto_task_runner);
-
-  // Checks if the TPM token is enabled. If the state is unknown, |callback|
-  // will be called back once the TPM state is known.
-  TPMTokenStatus IsTPMTokenEnabled(const TPMReadyCallback& callback);
-
-  std::string tpm_user_pin() const { return tpm_user_pin_; }
-
- private:
-  explicit TPMTokenLoader(bool for_test);
-  ~TPMTokenLoader() override;
-
-  bool IsTPMLoadingEnabled() const;
-
-  // Starts tpm token initialization if the user is logged in and the crypto
-  // task runner is set.
-  void MaybeStartTokenInitialization();
-
-  // This is the cyclic chain of callbacks to initialize the TPM token.
-  void ContinueTokenInitialization();
-  void OnTPMTokenEnabledForNSS();
-  void OnGotTpmTokenInfo(const TPMTokenInfo& token_info);
-  void OnTPMTokenInitialized(bool success);
-
-  // Notifies observers that the TPM token is ready.
-  void NotifyTPMTokenReady();
-
-  // LoginState::Observer
-  void LoggedInStateChanged() override;
-
-  bool initialized_for_test_;
-
-  TPMReadyCallbackList tpm_ready_callback_list_;
-
-  // The states are traversed in this order but some might get omitted or never
-  // be left.
-  enum TPMTokenState {
-    TPM_STATE_UNKNOWN,
-    TPM_INITIALIZATION_STARTED,
-    TPM_TOKEN_ENABLED_FOR_NSS,
-    TPM_DISABLED,
-    TPM_TOKEN_INFO_RECEIVED,
-    TPM_TOKEN_INITIALIZED,
-  };
-  TPMTokenState tpm_token_state_;
-
-  scoped_ptr<TPMTokenInfoGetter> tpm_token_info_getter_;
-
-  // Cached TPM token info.
-  int tpm_token_slot_id_;
-  std::string tpm_user_pin_;
-
-  base::ThreadChecker thread_checker_;
-
-  // TaskRunner for crypto calls.
-  scoped_refptr<base::SequencedTaskRunner> crypto_task_runner_;
-
-  base::WeakPtrFactory<TPMTokenLoader> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(TPMTokenLoader);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROMEOS_TPM_TOKEN_LOADER_H_