wireshark/fuzz/StandaloneFuzzTargetMain.c

/* based on http://llvm.org/svn/llvm-project/compiler-rt/trunk/lib/fuzzer/standalone/StandaloneFuzzTargetMain.c r311407 (22 Aug 2017) */

/* http://llvm.org/svn/llvm-project/compiler-rt/trunk/LICENSE.TXT follows */

/*
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/*===- StandaloneFuzzTargetMain.c - standalone main() for fuzz targets. ---===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// 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>

#include <glib.h>
#include <wsutil/file_util.h>

#include "FuzzerInterface.h"

int main(int argc, char **argv) {
  fprintf(stderr, "StandaloneFuzzTargetMain: running %d inputs\n", argc - 1);
  LLVMFuzzerInitialize(&argc, &argv);
  for (int i = 1; i < argc; i++) {
    fprintf(stderr, "Running: %s\n", argv[i]);
    FILE *f = ws_fopen(argv[i], "r");
    assert(f);
    fseek(f, 0, SEEK_END);
    long len = ftell(f);
    assert(len >= 0);
    fseek(f, 0, SEEK_SET);
    unsigned char *buf = (unsigned char*)g_malloc((size_t)len);
    size_t n_read = fread(buf, 1, len, f);
    assert(n_read == (size_t)len);
    fclose(f);
    LLVMFuzzerTestOneInput(buf, len);
    g_free(buf);
    fprintf(stderr, "Done:    %s: (%zd bytes)\n", argv[i], n_read);
  }
}