blob: 871cd7d7d55a4cafba9b617cac0426dde0c310be [file] [log] [blame]
// Copyright 2013 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 <map>
#include <memory>
#include <string>
#include "base/macros.h"
#include "base/strings/string16.h"
#include "components/policy/policy_export.h"
#if defined(OS_WIN)
#include <windows.h>
namespace base {
class Value;
namespace policy {
class Schema;
// Converts a value (as read from the registry) to meet |schema|, converting
// types as necessary. Unconvertible types will show up as null values in the
// result.
std::unique_ptr<base::Value> POLICY_EXPORT
ConvertRegistryValue(const base::Value& value, const Schema& schema);
// A case-insensitive string comparison functor.
struct POLICY_EXPORT CaseInsensitiveStringCompare {
bool operator()(const std::string& a, const std::string& b) const;
// In-memory representation of a registry subtree. Using a
// base::DictionaryValue directly seems tempting, but that doesn't handle the
// registry's case-insensitive-but-case-preserving semantics properly.
class POLICY_EXPORT RegistryDict {
using KeyMap = std::map<std::string,
using ValueMap = std::map<std::string,
// Returns a pointer to an existing key, NULL if not present.
RegistryDict* GetKey(const std::string& name);
const RegistryDict* GetKey(const std::string& name) const;
// Sets a key. If |dict| is NULL, clears that key.
void SetKey(const std::string& name, std::unique_ptr<RegistryDict> dict);
// Removes a key. If the key doesn't exist, NULL is returned.
std::unique_ptr<RegistryDict> RemoveKey(const std::string& name);
// Clears all keys.
void ClearKeys();
// Returns a pointer to a value, NULL if not present.
base::Value* GetValue(const std::string& name);
const base::Value* GetValue(const std::string& name) const;
// Sets a value. If |value| is NULL, removes the value.
void SetValue(const std::string& name, std::unique_ptr<base::Value> value);
// Removes a value. If the value doesn't exist, NULL is returned.
std::unique_ptr<base::Value> RemoveValue(const std::string& name);
// Clears all values.
void ClearValues();
// Merge keys and values from |other|, giving precedence to |other|.
void Merge(const RegistryDict& other);
// Swap with |other|.
void Swap(RegistryDict* other);
#if defined(OS_WIN)
// Read a Windows registry subtree into this registry dictionary object.
void ReadRegistry(HKEY hive, const base::string16& root);
// Converts the dictionary to base::Value representation. For key/value name
// collisions, the key wins. |schema| is used to determine the expected type
// for each policy.
// The returned object is either a base::DictionaryValue or a base::ListValue.
std::unique_ptr<base::Value> ConvertToJSON(const class Schema& schema) const;
const KeyMap& keys() const { return keys_; }
const ValueMap& values() const { return values_; }
KeyMap keys_;
ValueMap values_;
} // namespace policy