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/**
* Copyright (C) 2018 MongoDB 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.
*/
#pragma once
#include "boost/optional.hpp"
#include "mongo/db/operation_context.h"
#include "mongo/rpc/metadata/impersonated_user_metadata_gen.h"
namespace mongo {
namespace rpc {
/*
* The name of the BSON element in message metadata that contains the impersonated user data
*
* This is called "$audit" because in pre-4.2 the enterprise audit subsystem already passed
* the impersonated users info around in metadata for auditing purposes. This has been lifted
* into the community edition and appears in network messages as "$audit" for backwards
* compatibility.
*
* This metadata should only appear in requests from mongos to mongod.
*/
static constexpr auto kImpersonationMetadataSectionName = "$audit"_sd;
/*
* A type that maybe contains parsed ImpersonationUserMetadata
*/
using MaybeImpersonatedUserMetadata = boost::optional<ImpersonatedUserMetadata>;
/*
* Gets the current impersonation data from the OpCtx (assumes readImpersonatedUserMetadata
* has already been called)
*/
MaybeImpersonatedUserMetadata getImpersonatedUserMetadata(OperationContext* opCtx);
/*
* Parses any impersonation data out of a metdata bson obj and into the opCtx
*/
void readImpersonatedUserMetadata(const BSONElement& elem, OperationContext* opCtx);
/*
* Writes the current impersonation metadata off the opCtx and into a BSONObjBuilder
*/
void writeAuthDataToImpersonatedUserMetadata(OperationContext* opCtx, BSONObjBuilder* out);
} // namespace rpc
} // namespace mongo
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