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/**
* Copyright (C) 2022-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 "range_predicate.h"
#include "mongo/crypto/encryption_fields_gen.h"
#include "mongo/db/matcher/expression_leaf.h"
#include "mongo/db/query/fle/encrypted_predicate.h"
namespace mongo::fle {
REGISTER_ENCRYPTED_MATCH_PREDICATE_REWRITE_WITH_FLAG(ENCRYPTED_BETWEEN,
RangePredicate,
gFeatureFlagFLE2Range);
// TODO: SERVER-67206 Generate tags for range payload.
std::vector<PrfBlock> RangePredicate::generateTags(BSONValue payload) const {
return {};
}
std::unique_ptr<MatchExpression> RangePredicate::rewriteToTagDisjunction(
MatchExpression* expr) const {
invariant(expr->matchType() == MatchExpression::ENCRYPTED_BETWEEN);
auto betExpr = static_cast<EncryptedBetweenMatchExpression*>(expr);
auto ffp = betExpr->rhs();
if (!isPayload(ffp)) {
return nullptr;
}
auto obj = toBSONArray(generateTags(ffp));
auto tags = std::vector<BSONElement>();
obj.elems(tags);
auto inExpr = std::make_unique<InMatchExpression>(kSafeContent);
inExpr->setBackingBSON(std::move(obj));
auto status = inExpr->setEqualities(std::move(tags));
uassertStatusOK(status);
return inExpr;
}
// TODO: SERVER-67209 Server-side rewrite for agg expressions with $encryptedBetween.
std::unique_ptr<Expression> RangePredicate::rewriteToTagDisjunction(Expression* expr) const {
return nullptr;
}
// TODO: SERVER-67267 Rewrite $encryptedBetween to $_internalFleBetween when number of tags exceeds
// limit.
std::unique_ptr<MatchExpression> RangePredicate::rewriteToRuntimeComparison(
MatchExpression* expr) const {
return nullptr;
}
// TODO: SERVER-67267 Rewrite $encryptedBetween to $_internalFleBetween when number of tags exceeds
// limit.
std::unique_ptr<Expression> RangePredicate::rewriteToRuntimeComparison(Expression* expr) const {
return nullptr;
}
} // namespace mongo::fle
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