Store/Retrieve CrOS user policy in session_manager.

chrome/browser/policy/cros_user_policy_cache.h

+// 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.
+
+#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/policy/cloud_policy_cache_base.h"
+#include "chrome/browser/policy/user_policy_disk_cache.h"
+#include "chrome/browser/policy/user_policy_token_cache.h"
+
+namespace chromeos {
+class SessionManagerClient;
+}
+
+namespace policy {
+
+class CloudPolicyDataStore;
+
+// 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 UserPolicyDiskCache::Delegate {
+ public:
+  CrosUserPolicyCache(chromeos::SessionManagerClient* session_manager_client,
+                      CloudPolicyDataStore* data_store,
+                      bool wait_for_policy_fetch,
+                      const FilePath& legacy_token_cache_file,
+                      const FilePath& legacy_policy_cache_file);
+  virtual ~CrosUserPolicyCache();
+
+  // CloudPolicyCacheBase implementation.
+  virtual void Load() OVERRIDE;
+  virtual bool SetPolicy(
+      const enterprise_management::PolicyFetchResponse& policy) OVERRIDE;
+  virtual void SetUnmanaged() OVERRIDE;
+  virtual void SetFetchingDone() OVERRIDE;
+
+ protected:
+  virtual bool DecodePolicyData(
+      const enterprise_management::PolicyData& policy_data,
+      PolicyMap* policies) OVERRIDE;
+
+ private:
+  class StorePolicyOperation;
+  class RetrievePolicyOperation;
+
+  // UserPolicyTokenLoader::Delegate:
+  virtual void OnTokenLoaded(const std::string& token,
+                             const std::string& device_id) OVERRIDE;
+
+  // UserPolicyDiskCache::Delegate:
+  virtual void OnDiskCacheLoaded(
+      UserPolicyDiskCache::LoadResult result,
+      const enterprise_management::CachedCloudPolicyResponse& policy) 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 data store.
+  void OnPolicyLoadDone(
+      bool result,
+      const enterprise_management::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 enterprise_management::PolicyFetchResponse& policy);
+
+  void CancelStore();
+  void CancelRetrieve();
+
+  // Checks whether the disk cache and (if requested) the policy fetch
+  // (including the DBus roundtrips) has completed and generates ready or
+  // fetching done notifications if this is the case.
+  void CheckIfDone();
+
+  // Installs legacy policy, mangling it to remove any public keys, public key
+  // versions and signatures. This is done so on the next policy fetch the
+  // server ships down a new policy to be sent down to session_manager.
+  void InstallLegacyPolicy(
+      const enterprise_management::PolicyFetchResponse& policy);
+
+  // Removes the legacy cache dir.
+  static void RemoveLegacyCacheDir(const FilePath& dir);
+
+  chromeos::SessionManagerClient* session_manager_client_;
+  CloudPolicyDataStore* data_store_;
+
+  // Whether a policy fetch is pending before readiness is asserted.
+  bool pending_policy_fetch_;
+  bool pending_disk_cache_load_;
+
+  // Storage and retrieval operations that are currently in flight.
+  StorePolicyOperation* store_operation_;
+  RetrievePolicyOperation* retrieve_operation_;
+
+  // TODO(mnissler): Remove all the legacy policy support members below after
+  // the number of pre-M20 clients drops back to zero.
+  FilePath legacy_cache_dir_;
+
+  base::WeakPtrFactory<UserPolicyTokenCache::Delegate>
+      legacy_token_cache_delegate_factory_;
+  scoped_refptr<UserPolicyTokenLoader> legacy_token_loader_;
+
+  base::WeakPtrFactory<UserPolicyDiskCache::Delegate>
+      legacy_policy_cache_delegate_factory_;
+  scoped_refptr<UserPolicyDiskCache> legacy_policy_cache_;
+
+  DISALLOW_COPY_AND_ASSIGN(CrosUserPolicyCache);
+};
+
+}  // namespace policy
+
+#endif  // CHROME_BROWSER_POLICY_CROS_USER_POLICY_CACHE_H_