fuzz/StandaloneFuzzTargetMain.c

   1 /* based on http://llvm.org/svn/llvm-project/compiler-rt/trunk/lib/fuzzer/standalone/StandaloneFuzzTargetMain.c r311407 (22 Aug 2017) */
   2
   3 /* http://llvm.org/svn/llvm-project/compiler-rt/trunk/LICENSE.TXT follows */
   4
   5 /*
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  10 The compiler_rt library is dual licensed under both the University of Illinois
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  15 Full text of the relevant licenses is included below.
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  17 ==============================================================================
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  19 University of Illinois/NCSA
  20 Open Source License
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  22 Copyright (c) 2009-2016 by the contributors listed in CREDITS.TXT
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  63 Copyright (c) 2009-2015 by the contributors listed in CREDITS.TXT
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  75 The disclaimer of warranty in the University of Illinois Open Source License
  76 applies to all code in the LLVM Distribution, and nothing in any of the
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  80 */
  81
  82 /*===- StandaloneFuzzTargetMain.c - standalone main() for fuzz targets. ---===//
  83 //
  84 //                     The LLVM Compiler Infrastructure
  85 //
  86 // This file is distributed under the University of Illinois Open Source
  87 // License. See LICENSE.TXT for details.
  88 //
  89 //===----------------------------------------------------------------------===//
  90 // This main() function can be linked to a fuzz target (i.e. a library
  91 // that exports LLVMFuzzerTestOneInput() and possibly LLVMFuzzerInitialize())
  92 // instead of libFuzzer. This main() function will not perform any fuzzing
  93 // but will simply feed all input files one by one to the fuzz target.
  94 //
  95 // Use this file to provide reproducers for bugs when linking against libFuzzer
  96 // or other fuzzing engine is undesirable.
  97 //===----------------------------------------------------------------------===*/
  98 #include <assert.h>
  99 #include <stdio.h>
 100 #include <stdlib.h>
 101
 102 #include <glib.h>
 103 #include <wsutil/file_util.h>
 104
 105 #include "FuzzerInterface.h"
 106
 107 int main(int argc, char **argv) {
 108   fprintf(stderr, "StandaloneFuzzTargetMain: running %d inputs\n", argc - 1);
 109   LLVMFuzzerInitialize(&argc, &argv);
 110   for (int i = 1; i < argc; i++) {
 111     fprintf(stderr, "Running: %s\n", argv[i]);
 112     FILE *f = ws_fopen(argv[i], "r");
 113     assert(f);
 114     fseek(f, 0, SEEK_END);
 115     long len = ftell(f);
 116     assert(len >= 0);
 117     fseek(f, 0, SEEK_SET);
 118     unsigned char *buf = (unsigned char*)g_malloc((size_t)len);
 119     size_t n_read = fread(buf, 1, len, f);
 120     assert(n_read == (size_t)len);
 121     fclose(f);
 122     LLVMFuzzerTestOneInput(buf, len);
 123     g_free(buf);
 124     fprintf(stderr, "Done:    %s: (%zd bytes)\n", argv[i], n_read);
 125   }
 126 }