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// Copyright 2020 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "inchi_api.h"
// Define the maximum value for size_t. We return if the fuzzing input is equal
// to kSizeMax because appending the null-terminator to the InChI buffer would
// cause wraparound, thereby initializing the buffer to size 0.
static const size_t kSizeMax = (size_t)-1;
int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
if (size == kSizeMax)
return 0;
char *szINCHISource = malloc(sizeof(char) * (size + 1));
memcpy(szINCHISource, data, size);
szINCHISource[size] = '\0'; // InChI string must be null-terminated
// Buffer lengths taken from InChI API reference, located at
// https://www.inchi-trust.org/download/104/InChI_API_Reference.pdf, page 24
char szINCHIKey[28], szXtra1[65], szXtra2[65];
GetINCHIKeyFromINCHI(szINCHISource, 0, 0, szINCHIKey, szXtra1, szXtra2);
inchi_InputINCHI inpInChI;
inpInChI.szInChI = szINCHISource;
inchi_Output out;
GetINCHIfromINCHI(&inpInChI, &out);
inchi_OutputStruct outStruct;
GetStructFromINCHI(&inpInChI, &outStruct);
free(szINCHISource);
FreeINCHI(&out);
FreeStructFromINCHI(&outStruct);
return 0;
}