Consolidate data storage and notifications in the cloud policy subsystem

chrome/browser/policy/user_policy_identity_strategy.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/policy/user_policy_identity_strategy.h"
-
-#include "chrome/browser/policy/proto/device_management_backend.pb.h"
-#include "chrome/browser/policy/proto/device_management_constants.h"
-#include "chrome/common/guid.h"
-
-namespace policy {
-
-namespace em = enterprise_management;
-
-UserPolicyIdentityStrategy::UserPolicyIdentityStrategy(
-    const std::string& user_name,
-    const FilePath& cache_file)
-    : cache_loaded_(false),
-      user_name_(user_name),
-      ALLOW_THIS_IN_INITIALIZER_LIST(weak_ptr_factory_(this)) {
-  cache_ = new UserPolicyTokenCache(weak_ptr_factory_.GetWeakPtr(), cache_file);
-}
-
-UserPolicyIdentityStrategy::~UserPolicyIdentityStrategy() {}
-
-void UserPolicyIdentityStrategy::LoadTokenCache() {
-  cache_->Load();
-}
-
-std::string UserPolicyIdentityStrategy::GetDeviceToken() {
-  return device_token_;
-}
-
-std::string UserPolicyIdentityStrategy::GetDeviceID() {
-  return device_id_;
-}
-
-std::string UserPolicyIdentityStrategy::GetMachineID() {
-  return std::string();
-}
-
-std::string UserPolicyIdentityStrategy::GetMachineModel() {
-  return std::string();
-}
-
-em::DeviceRegisterRequest_Type
-UserPolicyIdentityStrategy::GetPolicyRegisterType() {
-  return em::DeviceRegisterRequest::USER;
-}
-
-std::string UserPolicyIdentityStrategy::GetPolicyType() {
-  return kChromeUserPolicyType;
-}
-
-bool UserPolicyIdentityStrategy::GetCredentials(std::string* username,
-                                                std::string* auth_token) {
-  *username = user_name_;
-  *auth_token = auth_token_;
-
-  return !username->empty() && !auth_token->empty() && !device_id_.empty();
-}
-
-void UserPolicyIdentityStrategy::OnDeviceTokenAvailable(
-    const std::string& token) {
-  DCHECK(!device_id_.empty());
-  device_token_ = token;
-  cache_->Store(device_token_, device_id_);
-  NotifyDeviceTokenChanged();
-}
-
-void UserPolicyIdentityStrategy::CheckAndTriggerFetch() {
-  if (!user_name_.empty() && !auth_token_.empty() && cache_loaded_) {
-    // For user tokens, there is no actual identifier. We generate a random
-    // identifier instead each time we ask for the token.
-    // This shouldn't be done before the cache is loaded, because there may
-    // already be a device id and matching device token stored there.
-    device_id_ = guid::GenerateGUID();
-    NotifyAuthChanged();
-  }
-}
-
-void UserPolicyIdentityStrategy::SetAuthToken(const std::string& auth_token) {
-  auth_token_ = auth_token;
-
-  // Request a new device management server token, but only in case we
-  // don't already have it.
-  if (device_token_.empty())
-    CheckAndTriggerFetch();
-}
-
-void UserPolicyIdentityStrategy::OnTokenCacheLoaded(
-    const std::string& token,
-    const std::string& device_id) {
-  if (cache_loaded_)
-    return;
-  cache_loaded_ = true;
-  if (!token.empty() && !device_id.empty()) {
-    device_token_ = token;
-    device_id_ = device_id;
-    NotifyDeviceTokenChanged();
-  } else {
-    CheckAndTriggerFetch();
-  }
-}
-
-
-}  // namespace policy