#include <stdint.h>

#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
void fuzz_openFile(const char * name);

int main(int argc, char** argv)
{
FILE * fp;
uint8_t *Data;
size_t Size;

if (argc == 3) {
fuzz_openFile(argv[2]);
} else if (argc != 2) {
return 1;
}
//opens the file, get its size, and reads it into a buffer
fp = fopen(argv[1], "rb");
if (fp == NULL) {
return 2;
}
if (fseek(fp, 0L, SEEK_END) != 0) {
fclose(fp);
return 2;
}
Size = ftell(fp);
if (Size == (size_t) -1) {
fclose(fp);
return 2;
}
if (fseek(fp, 0L, SEEK_SET) != 0) {
fclose(fp);
return 2;
}
Data = malloc(Size);
if (Data == NULL) {
fclose(fp);
return 2;
}
if (fread(Data, Size, 1, fp) != 1) {
fclose(fp);
free(Data);
return 2;
}

//launch fuzzer
LLVMFuzzerTestOneInput(Data, Size);
free(Data);
fclose(fp);
return 0;
}