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/**
* Copyright (C) 2018-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/user_name.h"
#include <algorithm>
#include <iostream>
#include <string>
#include "mongo/db/auth/authorization_manager.h"
#include "mongo/util/assert_util.h"
namespace mongo {
/**
* Don't change the logic of this function as it will break stable API version 1.
*/
StatusWith<UserName> UserName::parse(StringData userNameStr) {
size_t splitPoint = userNameStr.find('.');
if (splitPoint == std::string::npos) {
return Status(ErrorCodes::BadValue,
"username must contain a '.' separated database.user pair");
}
StringData userDBPortion = userNameStr.substr(0, splitPoint);
StringData userNamePortion = userNameStr.substr(splitPoint + 1);
return UserName(userNamePortion, userDBPortion);
}
/**
* Don't change the logic of this function as it will break stable API version 1.
*/
UserName UserName::parseFromVariant(const stdx::variant<std::string, BSONObj>& helloUserName) {
if (stdx::holds_alternative<std::string>(helloUserName)) {
return uassertStatusOK(parse(stdx::get<std::string>(helloUserName)));
}
return parseFromBSONObj(stdx::get<BSONObj>(helloUserName));
}
/**
* Don't change the logic of this function as it will break stable API version 1.
*/
UserName UserName::parseFromBSONObj(const BSONObj& obj) {
std::bitset<2> usedFields;
constexpr auto kUserNameFieldName = AuthorizationManager::USER_NAME_FIELD_NAME;
constexpr auto kUserDbFieldName = AuthorizationManager::USER_DB_FIELD_NAME;
constexpr size_t kUserNameFieldBit = 0;
constexpr size_t kUserDbFieldBit = 1;
StringData userName, userDb;
for (const auto& element : obj) {
const auto fieldName = element.fieldNameStringData();
uassert(ErrorCodes::BadValue,
str::stream() << "username must contain a string field named: " << fieldName,
element.type() == String);
if (fieldName == kUserNameFieldName) {
uassert(ErrorCodes::BadValue,
str::stream() << "username has more than one field named: "
<< kUserNameFieldName,
!usedFields[kUserNameFieldBit]);
usedFields.set(kUserNameFieldBit);
userName = element.valueStringData();
} else if (fieldName == kUserDbFieldName) {
uassert(ErrorCodes::BadValue,
str::stream() << "username has more than one field named: " << kUserDbFieldName,
!usedFields[kUserDbFieldBit]);
usedFields.set(kUserDbFieldBit);
userDb = element.valueStringData();
} else {
uasserted(ErrorCodes::BadValue,
str::stream() << "username contains an unknown field named: '" << fieldName);
}
}
uassert(ErrorCodes::BadValue,
str::stream() << "username must contain a field named: " << kUserNameFieldName,
usedFields[kUserNameFieldBit]);
uassert(ErrorCodes::BadValue,
str::stream() << "username must contain a field named: " << kUserDbFieldName,
usedFields[kUserDbFieldBit]);
return UserName(userName, userDb);
}
UserName UserName::parseFromBSON(const BSONElement& elem) {
if (elem.type() == String) {
return uassertStatusOK(UserName::parse(elem.valueStringData()));
} else if (elem.type() == Object) {
const auto obj = elem.embeddedObject();
return parseFromBSONObj(obj);
} else {
uasserted(ErrorCodes::BadValue, "username must be either a string or an object");
}
}
void UserName::serializeToBSON(StringData fieldName, BSONObjBuilder* bob) const {
BSONObjBuilder sub(bob->subobjStart(fieldName));
appendToBSON(&sub);
}
void UserName::serializeToBSON(BSONArrayBuilder* bab) const {
BSONObjBuilder sub(bab->subobjStart());
appendToBSON(&sub);
}
/**
* Don't change the logic of this function as it will break stable API version 1.
*/
void UserName::appendToBSON(BSONObjBuilder* bob) const {
*bob << AuthorizationManager::USER_NAME_FIELD_NAME << getUser()
<< AuthorizationManager::USER_DB_FIELD_NAME << getDB();
}
/**
* Don't change the logic of this function as it will break stable API version 1.
*/
BSONObj UserName::toBSON() const {
BSONObjBuilder ret;
appendToBSON(&ret);
return ret.obj();
}
} // namespace mongo
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