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/**
* Copyright (C) 2017 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 <string>
#include "mongo/base/status.h"
#include "mongo/util/uuid.h"
namespace mongo {
class BSONElement;
class BSONObj;
class OperationContext;
// OplogApplicationValidity represents special conditions relevant to authorization for
// oplog application.
//
// kNeedsSuperuser means the oplog application command is empty or contains an empty nested
// applyOps command oplog entry, or a createCollection or renameCollection mixed in a batch.
//
// kNeedsUseUUID means any oplog entry in the command contains a UUID, so the useUUID action
// must be authorized.
//
// kNeedsForceAndUseUUID means the command contains one oplog entry which is a collection create
// with a specified UUID, so both the forceUUID and useUUID actions must be authorized.
//
// kOk means no special conditions apply.
//
// Only kOk and kNeedsUseUUID are valid for 'doTxn'. All are valid for 'applyOps'.
enum class OplogApplicationValidity { kOk, kNeedsUseUUID, kNeedsForceAndUseUUID, kNeedsSuperuser };
// OplogApplicationChecks contains helper functions for checking the applyOps and doTxn commands.
class OplogApplicationChecks {
public:
/**
* Checks the authorization for an entire oplog application command.
*/
static Status checkAuthForCommand(OperationContext* opCtx,
const std::string& dbname,
const BSONObj& cmdObj,
OplogApplicationValidity validity);
/**
* Checks that 'opsElement' is an array and all elements of the array are valid operations.
*/
static Status checkOperationArray(const BSONElement& opsElement);
private:
static UUID getUUIDFromOplogEntry(const BSONObj& oplogEntry);
/**
* Checks the authorization for a single operation contained within an oplog application
* command.
*/
static Status checkOperationAuthorization(OperationContext* opCtx,
const std::string& dbname,
const BSONObj& oplogEntry,
AuthorizationSession* authSession,
bool alwaysUpsert);
/**
* Returns OK if 'e' contains a valid operation.
*/
static Status checkOperation(const BSONElement& e);
};
} // namespace mongo
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