lib/fuzzing/fuzz_lzxpress_round_trip.c

   1 /*
   2    Fuzzing for lzxpress_decompress
   3    Copyright (C) Michael Hanselmann 2019
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 #include "includes.h"
  20 #include "fuzzing/fuzzing.h"
  21 #include "lzxpress.h"
  22
  23 int LLVMFuzzerInitialize(int *argc, char ***argv)
  24 {
  25         return 0;
  26 }
  27
  28 int LLVMFuzzerTestOneInput(const uint8_t *buf, size_t len)
  29 {
  30         static uint8_t compressed[1024 * 1280] = {0};
  31         static uint8_t decompressed[1024 * 1024] = {0};
  32         ssize_t compressed_size;
  33         ssize_t decompressed_size;
  34
  35         if (len > sizeof(decompressed)) {
  36                 return 0;
  37         }
  38
  39         compressed_size = lzxpress_compress(buf, len,
  40                                             compressed, sizeof(compressed));
  41         if (compressed_size < 0) {
  42                 abort();
  43         }
  44
  45         decompressed_size = lzxpress_decompress(compressed, compressed_size,
  46                                                 decompressed, sizeof(decompressed));
  47
  48         if (decompressed_size != len) {
  49                 abort();
  50         }
  51         if (memcmp(buf, decompressed, len) != 0) {
  52                 abort();
  53         }
  54
  55         return 0;
  56 }