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/**
* Copyright (C) 2019-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/bson/bson_validate.h"
#include "mongo/db/storage/key_string.h"
const mongo::Ordering kAllAscending = mongo::Ordering::make(mongo::BSONObj());
const mongo::Ordering kOneDescending = mongo::Ordering::make(BSON("a" << -1));
const auto kV1 = mongo::KeyString::Version::V1;
const auto kV0 = mongo::KeyString::Version::V0;
uint8_t getZeroType(char val) {
switch (val % 10) {
case 0:
return mongo::KeyString::TypeBits::kInt;
case 1:
return mongo::KeyString::TypeBits::kDouble;
case 2:
return mongo::KeyString::TypeBits::kLong;
case 3:
return mongo::KeyString::TypeBits::kNegativeDoubleZero;
case 4:
return mongo::KeyString::TypeBits::kDecimalZero0xxx;
case 5:
return mongo::KeyString::TypeBits::kDecimalZero1xxx;
case 6:
return mongo::KeyString::TypeBits::kDecimalZero2xxx;
case 7:
return mongo::KeyString::TypeBits::kDecimalZero3xxx;
case 8:
return mongo::KeyString::TypeBits::kDecimalZero4xxx;
case 9:
return mongo::KeyString::TypeBits::kDecimalZero5xxx;
default:
return 0x00;
}
}
extern "C" int LLVMFuzzerTestOneInput(const char* Data, size_t Size) {
if (Size < 4)
return 0;
const auto version = Data[0] % 2 == 0 ? kV0 : kV1;
const auto ord = Data[1] % 2 == 0 ? kAllAscending : kOneDescending;
mongo::KeyString::TypeBits tb(version);
const size_t len = Data[2];
if (len > static_cast<size_t>(Size - 3))
return 0;
// Data[2] defines the number of types to append to the TypeBits
// Data[3 + i] defines which types have to be added
for (size_t i = 0; i < len; i++) {
char randomType = Data[3 + i] & 0xf;
char randomZeroType = (Data[3 + i] & 0xf0) >> 4;
switch (randomType % 9) {
case 0:
tb.appendString();
break;
case 1:
tb.appendSymbol();
break;
case 2:
tb.appendNumberInt();
break;
case 3:
tb.appendNumberLong();
break;
case 4:
tb.appendNumberDouble();
break;
case 5:
tb.appendNumberDecimal();
break;
case 6:
tb.appendZero(getZeroType(randomZeroType));
break;
case 7:
tb.appendDecimalZero(getZeroType(randomZeroType));
break;
case 8:
tb.appendDecimalExponent(getZeroType(randomZeroType));
break;
default:
break;
}
}
try {
mongo::BSONObj obj =
mongo::KeyString::toBsonSafe(&Data[2 + len], Size - (2 + len), ord, tb);
// We want to make sure the generated BSON is valid
invariant(mongo::validateBSON(obj.objdata(), obj.objsize()));
} catch (const mongo::AssertionException&) {
// We need to catch exceptions caused by invalid inputs
}
return 0;
}
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