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// 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.
#include "chrome/browser/policy/policy_path_parser.h"
#include <shlobj.h>
#include <stddef.h>
#include <wtsapi32.h>
#include <memory>
#include "base/macros.h"
#include "base/strings/utf_string_conversions.h"
#include "base/win/registry.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/install_static/policy_path_parser.h"
#include "components/policy/policy_constants.h"
namespace {
// Checks if the key exists in the given hive and expands any string variables.
bool LoadUserDataDirPolicyFromRegistry(HKEY hive,
const char* key_name_str,
base::FilePath* dir) {
base::string16 value;
base::string16 key_name(base::ASCIIToUTF16(key_name_str));
base::win::RegKey key(hive, policy::kRegistryChromePolicyKey, KEY_READ);
if (key.ReadValue(key_name.c_str(), &value) == ERROR_SUCCESS) {
*dir = base::FilePath(policy::path_parser::ExpandPathVariables(value));
return true;
}
return false;
}
} // namespace
namespace policy {
namespace path_parser {
// Replaces all variable occurances in the policy string with the respective
// system settings values.
base::FilePath::StringType ExpandPathVariables(
const base::FilePath::StringType& untranslated_string) {
// This is implemented in the install_static library so that it can also be
// used by Crashpad initialization code in chrome_elf, which has a very
// constrained set of dependencies.
return install_static::ExpandPathVariables(untranslated_string);
}
void CheckUserDataDirPolicy(base::FilePath* user_data_dir) {
DCHECK(user_data_dir);
// Policy from the HKLM hive has precedence over HKCU.
if (!LoadUserDataDirPolicyFromRegistry(HKEY_LOCAL_MACHINE, key::kUserDataDir,
user_data_dir)) {
LoadUserDataDirPolicyFromRegistry(HKEY_CURRENT_USER, key::kUserDataDir,
user_data_dir);
}
}
void CheckDiskCacheDirPolicy(base::FilePath* disk_cache_dir) {
DCHECK(disk_cache_dir);
if (!LoadUserDataDirPolicyFromRegistry(HKEY_LOCAL_MACHINE, key::kDiskCacheDir,
disk_cache_dir)) {
LoadUserDataDirPolicyFromRegistry(HKEY_CURRENT_USER, key::kDiskCacheDir,
disk_cache_dir);
}
}
} // namespace path_parser
} // namespace policy
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