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/**
* Copyright (C) 2020-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/base/init.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/commands.h"
#include "mongo/db/commands/test_commands_enabled.h"
#include "mongo/db/cst/bson_lexer.h"
#include "mongo/db/cst/c_node.h"
#include "mongo/db/cst/cst_pipeline_translation.h"
#include "mongo/db/cst/parser_gen.hpp"
namespace mongo {
class CstCommand : public BasicCommand {
public:
CstCommand() : BasicCommand("cst") {}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kAlways;
}
bool supportsWriteConcern(const BSONObj& cmdObj) const override {
return false;
}
// Test commands should never be enabled in production, but we try to require auth on new
// test commands anyway, just in case someone enables them by mistake.
Status checkAuthForOperation(OperationContext* opCtx,
const DatabaseName& dbname,
const BSONObj&) const override {
AuthorizationSession* authSession = AuthorizationSession::get(opCtx->getClient());
// This auth check is more restrictive than necessary, to make it simpler.
// The CST command constructs a Pipeline, which might hold execution resources.
// We could do fine-grained permission checking similar to the find or aggregate commands,
// but that seems more complicated than necessary since this is only a test command.
if (!authSession->isAuthorizedForAnyActionOnAnyResourceInDB(dbname.db())) {
return Status(ErrorCodes::Unauthorized, "Unauthorized");
}
return Status::OK();
}
std::string help() const override {
return "test command for CST";
}
bool run(OperationContext* opCtx,
const DatabaseName& dbName,
const BSONObj& cmdObj,
BSONObjBuilder& result) override {
CNode pipelineCst;
{
BSONLexer lexer(cmdObj["pipeline"].Obj(), ParserGen::token::START_PIPELINE);
ParserGen parser(lexer, &pipelineCst);
int err = parser.parse();
// We use exceptions instead of return codes to report parse errors, so this
// should never happen.
invariant(!err);
}
result.append("cst", BSONArray(pipelineCst.toBson()));
auto nss = NamespaceString{dbName, ""};
auto expCtx = make_intrusive<ExpressionContext>(opCtx, nullptr /*collator*/, nss);
auto pipeline = cst_pipeline_translation::translatePipeline(pipelineCst, expCtx);
result.append("ds", pipeline->serializeToBson());
return true;
}
};
MONGO_REGISTER_TEST_COMMAND(CstCommand);
} // namespace mongo
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