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// winutil.cpp
/* Copyright 2017 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#if defined(_WIN32)
#include "mongo/platform/basic.h"
#include "mongo/util/winutil.h"
#include "mongo/base/error_codes.h"
#include "mongo/base/status.h"
namespace mongo {
StatusWith<boost::optional<DWORD>> windows::getDWORDRegistryKey(const CString& group,
const CString& key) {
CRegKey regkey;
if (ERROR_SUCCESS != regkey.Open(HKEY_LOCAL_MACHINE, group, KEY_READ)) {
return Status(ErrorCodes::InternalError, "Unable to access windows registry");
}
DWORD val;
const auto res = regkey.QueryDWORDValue(key, val);
if (ERROR_INVALID_DATA == res) {
return Status(ErrorCodes::TypeMismatch,
"Invalid data type in windows registry, expected DWORD");
}
if (ERROR_SUCCESS != res) {
return boost::none;
}
return val;
}
} // namespace mongo
#endif
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