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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/commands/rename_collection_common.h"
#include <string>
#include <vector>
#include "mongo/db/auth/action_set.h"
#include "mongo/db/auth/action_type.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/auth/privilege.h"
#include "mongo/db/client.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/namespace_string.h"
namespace mongo {
namespace rename_collection {
Status checkAuthForRenameCollectionCommand(Client* client,
const std::string& dbname,
const BSONObj& cmdObj) {
const auto sourceNsElt = cmdObj["renameCollection"];
const auto targetNsElt = cmdObj["to"];
uassert(ErrorCodes::TypeMismatch,
"'renameCollection' must be of type String",
sourceNsElt.type() == BSONType::String);
uassert(ErrorCodes::TypeMismatch,
"'to' must be of type String",
targetNsElt.type() == BSONType::String);
const NamespaceString sourceNS(sourceNsElt.valueStringData());
const NamespaceString targetNS(targetNsElt.valueStringData());
bool dropTarget = cmdObj["dropTarget"].trueValue();
if (sourceNS.db() == targetNS.db() && sourceNS.isNormalCollection() &&
targetNS.isNormalCollection()) {
bool canRename = AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
ResourcePattern::forDatabaseName(sourceNS.db()), ActionType::renameCollectionSameDB);
bool canDropTargetIfNeeded = true;
if (dropTarget) {
canDropTargetIfNeeded =
AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
ResourcePattern::forExactNamespace(targetNS), ActionType::dropCollection);
}
bool canReadSrc = AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
ResourcePattern::forExactNamespace(sourceNS), ActionType::find);
bool canReadDest = AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
ResourcePattern::forExactNamespace(targetNS), ActionType::find);
// Even if the user can rename collections and can drop the target collection,
// the user should not be able to rename a collection from one they can't read
// to one they can.
if (canRename && canDropTargetIfNeeded && (canReadSrc || !canReadDest)) {
return Status::OK();
}
}
// Check privileges on source collection
ActionSet actions;
actions.addAction(ActionType::find);
actions.addAction(ActionType::dropCollection);
if (!AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
ResourcePattern::forExactNamespace(sourceNS), actions)) {
return Status(ErrorCodes::Unauthorized, "Unauthorized");
}
// Check privileges on dest collection
actions.removeAllActions();
actions.addAction(ActionType::insert);
actions.addAction(ActionType::createIndex);
if (dropTarget) {
actions.addAction(ActionType::dropCollection);
}
if (!AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
ResourcePattern::forExactNamespace(targetNS), actions)) {
return Status(ErrorCodes::Unauthorized, "Unauthorized");
}
return Status::OK();
}
} // namespace rename_collection
} // namespace mongo
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