Store/Retrieve CrOS user policy in session_manager.

chrome/browser/policy/cros_user_policy_cache.h

+// 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.
+
+#ifndef CHROME_BROWSER_POLICY_CROS_USER_POLICY_CACHE_H_
+#define CHROME_BROWSER_POLICY_CROS_USER_POLICY_CACHE_H_
+#pragma once
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/file_path.h"
+#include "base/memory/ref_counted.h"
+#include "chrome/browser/chromeos/cros/login_library.h"
+#include "chrome/browser/policy/cloud_policy_cache_base.h"
+#include "chrome/browser/policy/user_policy_token_cache.h"
+
+namespace policy {
+
+class CrosUserPolicyIdentityStrategy;
+
+// User policy cache that talks to the ChromeOS login library in order to store
+// and fetch policy data.
+class CrosUserPolicyCache : public CloudPolicyCacheBase,
+                            public UserPolicyTokenCache::Delegate {
+ public:
+  CrosUserPolicyCache(chromeos::LoginLibrary* login_library,
+                      CrosUserPolicyIdentityStrategy* identity_strategy,
+                      const FilePath& legacy_cache_file_);
+  virtual ~CrosUserPolicyCache();
+
+  // CloudPolicyCacheBase implementation.
+  virtual void Load() OVERRIDE;
+  virtual void SetPolicy(const em::PolicyFetchResponse& policy) OVERRIDE;
+  virtual void SetUnmanaged() OVERRIDE;
+
+ protected:
+  virtual bool DecodePolicyData(const em::PolicyData& policy_data,
+                                PolicyMap* mandatory,
+                                PolicyMap* recommended) OVERRIDE;
+
+ private:
+  class PolicyKey;
+  class StorePolicyOperation;
+  class RetrievePolicyOperation;
+
+  // UserPolicyTokenCache::Delegate:
+  virtual void OnTokenCacheLoaded(const std::string& token,
+                                  const std::string& device_id) OVERRIDE;
+
+  // Used as a callback for the policy store operation.
+  void OnPolicyStored(bool result);
+
+  // Callback for the initial policy load. Installs the policy and passes the
+  // loaded token and device ID to the identity strategy.
+  void OnPolicyLoadDone(bool result, const em::PolicyFetchResponse& policy);
+
+  // Callback for the policy retrieval operation run to reload the policy after
+  // new policy has been successfully stored. Installs the new policy in the
+  // cache and publishes it if successful.
+  void OnPolicyReloadDone(bool result, const em::PolicyFetchResponse& policy);
+
+  // Starts a new retrieval operation.
+  void StartRetrieve(bool reload_key);
+
+  void CancelStore();
+  void CancelRetrieve();
+
+  // Removes the legacy cache dir.
+  static void RemoveLegacyCacheDir(const FilePath& dir);
+
+  scoped_refptr<PolicyKey> key_;
+  chromeos::LoginLibrary* login_library_;
+  CrosUserPolicyIdentityStrategy* identity_strategy_;
+
+  base::WeakPtrFactory<UserPolicyTokenCache::Delegate> weak_ptr_factory_;
+  const FilePath legacy_cache_file_;
+
+  // TODO(mnissler): Remove when the number of M13 clients is back to zero.
+  scoped_refptr<UserPolicyTokenCache> legacy_token_cache_;
+
+  // Storage and retrieval operations that are currently in flight.
+  StorePolicyOperation* store_operation_;
+  RetrievePolicyOperation* retrieve_operation_;
+
+  DISALLOW_COPY_AND_ASSIGN(CrosUserPolicyCache);
+};
+
+}  // namespace policy
+
+#endif  // CHROME_BROWSER_POLICY_CROS_USER_POLICY_CACHE_H_