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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/auth_name.h"
#include "mongo/db/auth/role_name.h"
#include "mongo/db/auth/user_name.h"
namespace mongo {
namespace {
constexpr auto kTenantFieldName = "tenant"_sd;
} // namespace
template <typename T>
StatusWith<T> AuthName<T>::parse(StringData str, const boost::optional<TenantId>& tenant) {
auto split = str.find('.');
if (split == std::string::npos) {
return Status(ErrorCodes::BadValue,
str::stream() << T::kName << " must contain a '.' separated database."
<< T::kFieldName << " pair");
}
return T(str.substr(split + 1), str.substr(0, split), tenant);
}
template <typename T>
T AuthName<T>::parseFromVariant(const stdx::variant<std::string, BSONObj>& name,
const boost::optional<TenantId>& tenant) {
if (stdx::holds_alternative<std::string>(name)) {
return uassertStatusOK(parse(stdx::get<std::string>(name)));
}
return parseFromBSONObj(stdx::get<BSONObj>(name), tenant);
}
template <typename T>
T AuthName<T>::parseFromBSONObj(const BSONObj& obj, const boost::optional<TenantId>& activeTenant) {
std::bitset<3> usedFields;
constexpr size_t kNameFieldBit = 0;
constexpr size_t kDbFieldBit = 1;
constexpr size_t kTenantFieldBit = 2;
StringData name, db;
boost::optional<TenantId> tenant = activeTenant;
const auto validateField = [&](const BSONElement& elem, const size_t bit, BSONType expType) {
const auto fieldName = elem.fieldNameStringData();
uassert(ErrorCodes::BadValue,
str::stream() << T::kName << " must contain a " << typeName(expType)
<< " field named: " << fieldName << ". But, has type "
<< typeName(elem.type()),
elem.type() == expType);
uassert(ErrorCodes::BadValue,
str::stream() << T::kName << " has more than one field named: " << fieldName,
!usedFields[bit]);
usedFields.set(bit);
};
for (const auto& element : obj) {
const auto fieldName = element.fieldNameStringData();
if (fieldName == T::kFieldName) {
validateField(element, kNameFieldBit, String);
name = element.valueStringData();
} else if (fieldName == "db"_sd) {
validateField(element, kDbFieldBit, String);
db = element.valueStringData();
} else if (fieldName == kTenantFieldName) {
validateField(element, kTenantFieldBit, jstOID);
tenant = TenantId::parseFromBSON(element);
if (activeTenant) {
uassert(ErrorCodes::BadValue,
str::stream()
<< T::kName
<< " contains a TenantId which does not match the active tenant",
tenant == activeTenant);
}
} else if constexpr (std::is_same_v<UserName, T>) {
// Only UserName is strict, RoleName is non-strict.
uasserted(ErrorCodes::BadValue,
str::stream()
<< T::kName << " contains an unknown field named: '" << fieldName);
}
}
uassert(ErrorCodes::BadValue,
str::stream() << T::kName << " must contain a field named: " << T::kFieldName,
usedFields[kNameFieldBit]);
uassert(ErrorCodes::BadValue,
str::stream() << T::kName << " must contain a field named: db",
usedFields[kDbFieldBit]);
return T(name, db, tenant);
}
template <typename T>
T AuthName<T>::parseFromBSON(const BSONElement& elem,
const boost::optional<TenantId>& activeTenant) {
if (elem.type() == String) {
return uassertStatusOK(parse(elem.valueStringData(), activeTenant));
} else if (elem.type() == Object) {
const auto obj = elem.embeddedObject();
return parseFromBSONObj(obj, activeTenant);
} else {
uasserted(ErrorCodes::BadValue,
str::stream() << T::kName << " must be either a string or an object");
}
}
template <typename T>
void AuthName<T>::serializeToBSON(StringData fieldName, BSONObjBuilder* bob) const {
BSONObjBuilder builder(bob->subobjStart(fieldName));
appendToBSON(&builder);
}
template <typename T>
void AuthName<T>::serializeToBSON(BSONArrayBuilder* bob) const {
BSONObjBuilder builder(bob->subobjStart());
appendToBSON(&builder);
}
template <typename T>
void AuthName<T>::appendToBSON(BSONObjBuilder* bob, bool encodeTenant) const {
*bob << T::kFieldName << getName() << "db"_sd << getDB();
if (encodeTenant && _tenant) {
*bob << kTenantFieldName << _tenant.value();
}
}
template <typename T>
BSONObj AuthName<T>::toBSON(bool encodeTenant) const {
BSONObjBuilder bob;
appendToBSON(&bob, encodeTenant);
return bob.obj();
}
template <typename T>
std::size_t AuthName<T>::getBSONObjSize() const {
return 4UL + // BSONObj size
1UL + T::kFieldName.size() + 1UL + // FieldName elem type, FieldName, terminating NULL.
4UL + getName().size() + 1UL + // Length of name data, name data, terminating NULL.
1UL + ("db"_sd).size() + 1UL + // DB field elem type, "db", terminating NULL.
4UL + getDB().size() + 1UL + // DB value length, DB value, terminating NULL.
1UL; // EOD marker.
}
// Materialize the types we care about.
template class AuthName<RoleName>;
template class AuthName<UserName>;
} // namespace mongo
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