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/**
* Copyright (C) 2020-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* 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 Server Side 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.
*/
#include "mongo/db/auth/role_name_or_string.h"
namespace mongo {
/**
* macOS 10.14 does not support std::get<T>(std::variant<T,...>)
* because it lacks an implementation of std::bad_variant_access::what()
*
* std::get_if<T> doesn't require the exception, so we can get away with using it,
* provided that we have done due-diligence checking std::holds_alternative<T>
*/
template <typename T, typename U>
const T& variant_get(const U* variant) {
const T* value = std::get_if<T>(variant);
dassert(value != nullptr);
return *value;
}
RoleName RoleNameOrString::getRoleName(const DatabaseName& dbname) const {
if (std::holds_alternative<RoleName>(_roleName)) {
auto role = variant_get<RoleName>(&_roleName);
return RoleName(role.getName(), role.getDB(), dbname.tenantId());
} else {
dassert(std::holds_alternative<std::string>(_roleName));
return RoleName(variant_get<std::string>(&_roleName), dbname);
}
}
RoleNameOrString RoleNameOrString::parseFromBSON(const BSONElement& elem) {
if (elem.type() == Object) {
return RoleNameOrString(RoleName::parseFromBSON(elem));
} else if (elem.type() == String) {
return RoleNameOrString(elem.checkAndGetStringData());
} else {
uasserted(ErrorCodes::BadValue, "Role name must be either a document or string");
}
}
void RoleNameOrString::serializeToBSON(StringData fieldName, BSONObjBuilder* bob) const {
if (std::holds_alternative<RoleName>(_roleName)) {
variant_get<RoleName>(&_roleName).serializeToBSON(fieldName, bob);
} else {
dassert(std::holds_alternative<std::string>(_roleName));
bob->append(fieldName, variant_get<std::string>(&_roleName));
}
}
void RoleNameOrString::serializeToBSON(BSONArrayBuilder* bob) const {
if (std::holds_alternative<RoleName>(_roleName)) {
variant_get<RoleName>(&_roleName).serializeToBSON(bob);
} else {
dassert(std::holds_alternative<std::string>(_roleName));
bob->append(variant_get<std::string>(&_roleName));
}
}
} // namespace mongo
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