blob: efe512cfe8132a9f385aba7cd94b355b4782b707 [file] [log] [blame]
/*===- StandaloneFuzzTargetMain.c - standalone main() for fuzz targets. ---===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// This main() function can be linked to a fuzz target (i.e. a library
// that exports LLVMFuzzerTestOneInput() and possibly LLVMFuzzerInitialize())
// instead of libFuzzer. This main() function will not perform any fuzzing
// but will simply feed all input files one by one to the fuzz target.
// Use this file to provide reproducers for bugs when linking against libFuzzer
// or other fuzzing engine is undesirable.
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
extern int LLVMFuzzerTestOneInput(const unsigned char *data, size_t size);
__attribute__((weak)) extern int LLVMFuzzerInitialize(int *argc, char ***argv);
int main(int argc, char **argv) {
fprintf(stderr, "StandaloneFuzzTargetMain: running %d inputs\n", argc - 1);
if (LLVMFuzzerInitialize)
LLVMFuzzerInitialize(&argc, &argv);
for (int i = 1; i < argc; i++) {
fprintf(stderr, "Running: %s\n", argv[i]);
FILE *f = fopen(argv[i], "r");
fseek(f, 0, SEEK_END);
size_t len = ftell(f);
fseek(f, 0, SEEK_SET);
unsigned char *buf = (unsigned char*)malloc(len);
size_t n_read = fread(buf, 1, len, f);
assert(n_read == len);
LLVMFuzzerTestOneInput(buf, len);
fprintf(stderr, "Done: %s: (%zd bytes)\n", argv[i], n_read);