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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 "encrypted_predicate.h"
#include "mongo/crypto/fle_crypto.h"
#include "mongo/crypto/fle_crypto_types.h"
#include "mongo/db/matcher/expression_array.h"
#include "mongo/db/query/fle/query_rewriter_interface.h"
#include "mongo/logv2/log.h"
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kQuery
namespace mongo {
namespace fle {
ExpressionToRewriteMap aggPredicateRewriteMap{};
MatchTypeToRewriteMap matchPredicateRewriteMap{};
void logTagsExceeded(const ExceptionFor<ErrorCodes::FLEMaxTagLimitExceeded>& ex) {
LOGV2_DEBUG(
6672410, 2, "FLE Max tag limit hit during query rewrite", "__error__"_attr = ex.what());
}
std::unique_ptr<MatchExpression> makeTagDisjunction(BSONArray&& tagArray) {
auto tagElems = std::vector<BSONElement>();
tagArray.elems(tagElems);
auto inExpr = std::make_unique<InMatchExpression>(kSafeContent);
inExpr->setBackingBSON(std::move(tagArray));
uassertStatusOK(inExpr->setEqualities(std::move(tagElems)));
// __safeContent__ is always an array, so wrap the $in expr in an $elemMatch.
// most of the time, wrapping the predicate in $elemMatch doesn't have an effect (see the Single
// Query Condition in the $elemMatch documentation), but it is necessary for upserts to
// recognize that __safeContent__ should be an array when there is only one tag in the
// predicate.
auto elemMatchExpr = std::make_unique<ElemMatchValueMatchExpression>(kSafeContent);
elemMatchExpr->add(std::move(inExpr));
return elemMatchExpr;
}
std::unique_ptr<Expression> makeTagDisjunction(ExpressionContext* expCtx,
std::vector<Value>&& tags) {
std::vector<boost::intrusive_ptr<Expression>> orListElems;
for (auto&& tagElt : tags) {
// ... and for each tag, construct expression {$in: [tag,
// "$__safeContent__"]}.
std::vector<boost::intrusive_ptr<Expression>> inVec{
ExpressionConstant::create(expCtx, tagElt),
ExpressionFieldPath::createPathFromString(
expCtx, kSafeContentString, expCtx->variablesParseState)};
orListElems.push_back(make_intrusive<ExpressionIn>(expCtx, std::move(inVec)));
}
return std::make_unique<ExpressionOr>(expCtx, std::move(orListElems));
}
BSONArray toBSONArray(std::vector<PrfBlock>&& vec) {
auto bab = BSONArrayBuilder();
for (auto& elt : vec) {
bab.appendBinData(elt.size(), BinDataType::BinDataGeneral, elt.data());
}
return bab.arr();
}
std::vector<Value> toValues(std::vector<PrfBlock>&& vec) {
std::vector<Value> output;
for (auto& elt : vec) {
output.push_back(Value(BSONBinData(elt.data(), elt.size(), BinDataType::BinDataGeneral)));
}
return output;
}
bool isPayloadOfType(EncryptedBinDataType ty, const BSONElement& elt) {
return getEncryptedBinDataType(elt) == ty;
}
bool isPayloadOfType(EncryptedBinDataType ty, const Value& v) {
return getEncryptedBinDataType(v) == ty;
}
bool EncryptedPredicate::validateType(EncryptedBinDataType type) const {
uassert(7292602,
str::stream() << "Encountered a Queryable Encryption find payload type "
"that is no longer supported: "
<< static_cast<uint32_t>(type),
!this->isDeprecatedPayloadType(type));
return this->encryptedBinDataType() == type;
}
} // namespace fle
} // namespace mongo
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