1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef COMPONENTS_POLICY_CORE_COMMON_CONFIG_DIR_POLICY_LOADER_H_ 6 #define COMPONENTS_POLICY_CORE_COMMON_CONFIG_DIR_POLICY_LOADER_H_ 7 8 #include "base/files/file_path.h" 9 #include "base/files/file_path_watcher.h" 10 #include "components/policy/core/common/async_policy_loader.h" 11 #include "components/policy/core/common/policy_types.h" 12 #include "components/policy/policy_export.h" 13 14 namespace base { 15 class Value; 16 } 17 18 namespace policy { 19 20 // A policy loader implementation backed by a set of files in a given 21 // directory. The files should contain JSON-formatted policy settings. They are 22 // merged together and the result is returned in a PolicyBundle. 23 // The files are consulted in lexicographic file name order, so the 24 // last value read takes precedence in case of policy key collisions. 25 class POLICY_EXPORT ConfigDirPolicyLoader : public AsyncPolicyLoader { 26 public: 27 ConfigDirPolicyLoader(scoped_refptr<base::SequencedTaskRunner> task_runner, 28 const base::FilePath& config_dir, 29 PolicyScope scope); 30 virtual ~ConfigDirPolicyLoader(); 31 32 // AsyncPolicyLoader implementation. 33 virtual void InitOnBackgroundThread() OVERRIDE; 34 virtual scoped_ptr<PolicyBundle> Load() OVERRIDE; 35 virtual base::Time LastModificationTime() OVERRIDE; 36 37 private: 38 // Loads the policy files at |path| into the |bundle|, with the given |level|. 39 void LoadFromPath(const base::FilePath& path, 40 PolicyLevel level, 41 PolicyBundle* bundle); 42 43 // Merges the 3rd party |policies| into the |bundle|, with the given |level|. 44 void Merge3rdPartyPolicy(const base::Value* policies, 45 PolicyLevel level, 46 PolicyBundle* bundle); 47 48 // Callback for the FilePathWatchers. 49 void OnFileUpdated(const base::FilePath& path, bool error); 50 51 // The directory containing the policy files. 52 base::FilePath config_dir_; 53 54 // Policies loaded by this provider will have this scope. 55 PolicyScope scope_; 56 57 // Watchers for events on the mandatory and recommended subdirectories of 58 // |config_dir_|. 59 base::FilePathWatcher mandatory_watcher_; 60 base::FilePathWatcher recommended_watcher_; 61 62 DISALLOW_COPY_AND_ASSIGN(ConfigDirPolicyLoader); 63 }; 64 65 } // namespace policy 66 67 #endif // COMPONENTS_POLICY_CORE_COMMON_CONFIG_DIR_POLICY_LOADER_H_ 68