Move cryptohome_library to src/chromeos

chrome/browser/chromeos/cros/cryptohome_library.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/cros/cryptohome_library.h"
-
-#include <map>
-
-#include "base/bind.h"
-#include "base/memory/weak_ptr.h"
-#include "base/string_util.h"
-#include "base/strings/string_number_conversions.h"
-#include "chromeos/dbus/cryptohome_client.h"
-#include "chromeos/dbus/dbus_thread_manager.h"
-
-namespace chromeos {
-
-namespace {
-
-const char kStubSystemSalt[] = "stub_system_salt";
-
-// Does nothing.  Used as a Cryptohome::VoidMethodCallback.
-void DoNothing(DBusMethodCallStatus call_status) {}
-
-}  // namespace
-
-// This class handles the interaction with the ChromeOS cryptohome library APIs.
-class CryptohomeLibraryImpl : public CryptohomeLibrary {
- public:
-  CryptohomeLibraryImpl() : weak_ptr_factory_(this) {
-  }
-
-  virtual ~CryptohomeLibraryImpl() {
-  }
-
-  virtual bool TpmIsEnabled() OVERRIDE {
-    bool result = false;
-    DBusThreadManager::Get()->GetCryptohomeClient()->CallTpmIsEnabledAndBlock(
-        &result);
-    return result;
-  }
-
-  virtual bool TpmIsOwned() OVERRIDE {
-    bool result = false;
-    DBusThreadManager::Get()->GetCryptohomeClient()->CallTpmIsOwnedAndBlock(
-        &result);
-    return result;
-  }
-
-  virtual bool TpmIsBeingOwned() OVERRIDE {
-    bool result = false;
-    DBusThreadManager::Get()->GetCryptohomeClient()->
-        CallTpmIsBeingOwnedAndBlock(&result);
-    return result;
-  }
-
-  virtual void TpmCanAttemptOwnership() OVERRIDE {
-    DBusThreadManager::Get()->GetCryptohomeClient()->TpmCanAttemptOwnership(
-        base::Bind(&DoNothing));
-  }
-
-  virtual void TpmClearStoredPassword() OVERRIDE {
-    DBusThreadManager::Get()->GetCryptohomeClient()->
-        CallTpmClearStoredPasswordAndBlock();
-  }
-
-  virtual bool InstallAttributesGet(
-      const std::string& name, std::string* value) OVERRIDE {
-    std::vector<uint8> buf;
-    bool success = false;
-    DBusThreadManager::Get()->GetCryptohomeClient()->
-        InstallAttributesGet(name, &buf, &success);
-    if (success) {
-      // Cryptohome returns 'buf' with a terminating '\0' character.
-      DCHECK(!buf.empty());
-      DCHECK_EQ(buf.back(), 0);
-      value->assign(reinterpret_cast<char*>(buf.data()), buf.size() - 1);
-    }
-    return success;
-  }
-
-  virtual bool InstallAttributesSet(
-      const std::string& name, const std::string& value) OVERRIDE {
-    std::vector<uint8> buf(value.c_str(), value.c_str() + value.size() + 1);
-    bool success = false;
-    DBusThreadManager::Get()->GetCryptohomeClient()->
-        InstallAttributesSet(name, buf, &success);
-    return success;
-  }
-
-  virtual bool InstallAttributesFinalize() OVERRIDE {
-    bool success = false;
-    DBusThreadManager::Get()->GetCryptohomeClient()->
-        InstallAttributesFinalize(&success);
-    return success;
-  }
-
-  virtual bool InstallAttributesIsInvalid() OVERRIDE {
-    bool result = false;
-    DBusThreadManager::Get()->GetCryptohomeClient()->
-        InstallAttributesIsInvalid(&result);
-    return result;
-  }
-
-  virtual bool InstallAttributesIsFirstInstall() OVERRIDE {
-    bool result = false;
-    DBusThreadManager::Get()->GetCryptohomeClient()->
-        InstallAttributesIsFirstInstall(&result);
-    return result;
-  }
-
-  virtual std::string GetSystemSalt() OVERRIDE {
-    LoadSystemSalt();  // no-op if it's already loaded.
-    return StringToLowerASCII(base::HexEncode(
-        reinterpret_cast<const void*>(system_salt_.data()),
-        system_salt_.size()));
-  }
-
- private:
-  void LoadSystemSalt() {
-    if (!system_salt_.empty())
-      return;
-    DBusThreadManager::Get()->GetCryptohomeClient()->
-        GetSystemSalt(&system_salt_);
-    CHECK(!system_salt_.empty());
-    CHECK_EQ(system_salt_.size() % 2, 0U);
-  }
-
-  base::WeakPtrFactory<CryptohomeLibraryImpl> weak_ptr_factory_;
-  std::vector<uint8> system_salt_;
-
-  DISALLOW_COPY_AND_ASSIGN(CryptohomeLibraryImpl);
-};
-
-class CryptohomeLibraryStubImpl : public CryptohomeLibrary {
- public:
-  CryptohomeLibraryStubImpl()
-    : locked_(false) {}
-  virtual ~CryptohomeLibraryStubImpl() {}
-
-  virtual bool TpmIsEnabled() OVERRIDE {
-    return true;
-  }
-
-  virtual bool TpmIsOwned() OVERRIDE {
-    return true;
-  }
-
-  virtual bool TpmIsBeingOwned() OVERRIDE {
-    return true;
-  }
-
-  virtual void TpmCanAttemptOwnership() OVERRIDE {}
-
-  virtual void TpmClearStoredPassword() OVERRIDE {}
-
-  virtual bool InstallAttributesGet(
-      const std::string& name, std::string* value) OVERRIDE {
-    if (install_attrs_.find(name) != install_attrs_.end()) {
-      *value = install_attrs_[name];
-      return true;
-    }
-    return false;
-  }
-
-  virtual bool InstallAttributesSet(
-      const std::string& name, const std::string& value) OVERRIDE {
-    install_attrs_[name] = value;
-    return true;
-  }
-
-  virtual bool InstallAttributesFinalize() OVERRIDE {
-    locked_ = true;
-    return true;
-  }
-
-  virtual bool InstallAttributesIsInvalid() OVERRIDE {
-    return false;
-  }
-
-  virtual bool InstallAttributesIsFirstInstall() OVERRIDE {
-    return !locked_;
-  }
-
-  virtual std::string GetSystemSalt() OVERRIDE {
-    return kStubSystemSalt;
-  }
-
- private:
-  std::map<std::string, std::string> install_attrs_;
-  bool locked_;
-  DISALLOW_COPY_AND_ASSIGN(CryptohomeLibraryStubImpl);
-};
-
-CryptohomeLibrary::CryptohomeLibrary() {}
-CryptohomeLibrary::~CryptohomeLibrary() {}
-
-// static
-CryptohomeLibrary* CryptohomeLibrary::GetImpl(bool stub) {
-  CryptohomeLibrary* impl;
-  if (stub)
-    impl = new CryptohomeLibraryStubImpl();
-  else
-    impl = new CryptohomeLibraryImpl();
-  return impl;
-}
-
-} // namespace chromeos