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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.
*/
#pragma once
#include <cstdint>
namespace mongo {
/**
* Controls the maximum BSON depth tolerated by the server.
*/
struct BSONDepth {
// The default BSON depth nesting limit.
static constexpr std::int32_t kDefaultMaxAllowableDepth = 200;
// The minimum allowable value for the BSON depth parameter.
static constexpr std::int32_t kBSONDepthParameterFloor = 5;
// The maximum allowable value for the BSON depth parameter.
static constexpr std::int32_t kBSONDepthParameterCeiling = 1000;
// The number of extra levels of nesting above the storage depth limit that the server will
// tolerate.
static constexpr std::uint32_t kExtraSystemDepthLevels = 20;
// The depth of BSON accepted by the server. Configurable via the 'maxBSONDepth' server
// parameter.
static std::int32_t maxAllowableDepth;
/**
* Returns the maximum allowable BSON depth as an unsigned integer. Note that this is a hard
* limit -- any BSON document that exceeds this limit should be considered invalid.
*/
static std::uint32_t getMaxAllowableDepth();
/**
* Returns the BSON nesting depth limit for stored objects. User documents that exceed this
* depth are not valid for storage. This limit is slightly lower than the hard limit in
* getMaxAllowableDepth(), since we may generate things like oplog entries from these documents
* that contain extra levels of nesting.
*/
static std::uint32_t getMaxDepthForUserStorage();
};
} // namespace mongo
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