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// 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_CONFIG_DIR_POLICY_LOADER_H_
#define CHROME_BROWSER_POLICY_CONFIG_DIR_POLICY_LOADER_H_
#include "base/file_path.h"
#include "base/files/file_path_watcher.h"
#include "chrome/browser/policy/async_policy_loader.h"
#include "chrome/browser/policy/policy_types.h"
namespace base {
class Value;
}
namespace policy {
// A policy loader implementation backed by a set of files in a given
// directory. The files should contain JSON-formatted policy settings. They are
// merged together and the result is returned in a PolicyBundle.
// The files are consulted in lexicographic file name order, so the
// last value read takes precedence in case of policy key collisions.
class ConfigDirPolicyLoader : public AsyncPolicyLoader {
public:
ConfigDirPolicyLoader(const FilePath& config_dir, PolicyScope scope);
virtual ~ConfigDirPolicyLoader();
// AsyncPolicyLoader implementation.
virtual void InitOnFile() OVERRIDE;
virtual scoped_ptr<PolicyBundle> Load() OVERRIDE;
virtual base::Time LastModificationTime() OVERRIDE;
private:
// Loads the policy files at |path| into the |bundle|, with the given |level|.
void LoadFromPath(const FilePath& path,
PolicyLevel level,
PolicyBundle* bundle);
// Merges the 3rd party |policies| into the |bundle|, with the given |level|.
void Merge3rdPartyPolicy(const base::Value* policies,
PolicyLevel level,
PolicyBundle* bundle);
// Callback for the FilePathWatchers.
void OnFileUpdated(const FilePath& path, bool error);
// The directory containing the policy files.
FilePath config_dir_;
// Policies loaded by this provider will have this scope.
PolicyScope scope_;
// Watchers for events on the mandatory and recommended subdirectories of
// |config_dir_|.
base::files::FilePathWatcher mandatory_watcher_;
base::files::FilePathWatcher recommended_watcher_;
DISALLOW_COPY_AND_ASSIGN(ConfigDirPolicyLoader);
};
} // namespace policy
#endif // CHROME_BROWSER_POLICY_CONFIG_DIR_POLICY_LOADER_H_
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