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/**
* Copyright (C) 2022-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.
*/
#pragma once
#include "mongo/crypto/jwt_types_gen.h"
#include <map>
#include <string>
#include "mongo/base/string_data.h"
#include "mongo/bson/bsonobj.h"
#include "mongo/crypto/jwks_fetcher.h"
#include "mongo/crypto/jws_validator.h"
namespace mongo::crypto {
class JWKManager {
public:
using SharedValidator = std::shared_ptr<JWSValidator>;
using KeyMap = std::map<std::string, BSONObj>;
/**
* Fetch a JWKS file for the specified Issuer URL, parse them as keys, and instantiate
* JWSValidator instances if loadAtStartup is set as true. Otherwise the keys will be fetched
* from the source and JWSValidators initiated during the next JIT refresh.
*/
explicit JWKManager(std::unique_ptr<JWKSFetcher> fetcher, bool loadAtStartup);
/**
* Fetch a specific JWSValidator from the JWKManager by keyId.
* If the keyId does not exist, it will refresh _keyMaterial and _validators and retry.
* If it still cannot be found, it will return an error.
*/
StatusWith<SharedValidator> getValidator(StringData keyId);
std::size_t size() const {
return _validators->size();
}
/**
* Get current keys.
*/
const KeyMap& getKeys() const {
return *_keyMaterial;
}
bool getIsKeyModified() const {
return _isKeyModified;
}
/**
* Serialize the JWKs stored in this key manager into the BSONObjBuilder.
*/
void serialize(BSONObjBuilder* bob) const;
private:
void _setAndValidateKeys(const JWKSet& keys);
bool _haveKeysBeenModified(const KeyMap& newKeyMaterial) const;
std::unique_ptr<JWKSFetcher> _fetcher;
// Stores the current key material of the manager, which may have been refreshed.
std::shared_ptr<KeyMap> _keyMaterial;
std::shared_ptr<std::map<std::string, SharedValidator>> _validators;
// If an existing key got deleted or modified while doing a just in time refresh, we activate
// this flag to indicate that a refresh occurred during this JWKManager's lifetime.
bool _isKeyModified;
};
} // namespace mongo::crypto
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