fuzzers/config_file_fuzzer.c

   1 /*
   2  * libgit2 config file parser fuzz target.
   3  *
   4  * Copyright (C) the libgit2 contributors. All rights reserved.
   5  *
   6  * This file is part of libgit2, distributed under the GNU GPL v2 with
   7  * a Linking Exception. For full terms see the included COPYING file.
   8  */
   9
  10 #include "git2.h"
  11 #include "config_backend.h"
  12
  13 #include "standalone_driver.h"
  14
  15 #define UNUSED(x) (void)(x)
  16
  17 static int foreach_cb(const git_config_entry *entry, void *payload)
  18 {
  19         UNUSED(entry);
  20         UNUSED(payload);
  21
  22         return 0;
  23 }
  24
  25 int LLVMFuzzerInitialize(int *argc, char ***argv)
  26 {
  27         UNUSED(argc);
  28         UNUSED(argv);
  29
  30         if (git_libgit2_init() < 0)
  31                 abort();
  32
  33         return 0;
  34 }
  35
  36 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
  37 {
  38         git_config *cfg = NULL;
  39         git_config_backend *backend = NULL;
  40         int err = 0;
  41
  42         if ((err = git_config_new(&cfg)) != 0) {
  43                 goto out;
  44         }
  45
  46         if ((err = git_config_backend_from_string(&backend, (const char*)data, size)) != 0) {
  47                 goto out;
  48         }
  49         if ((err = git_config_add_backend(cfg, backend, 0, NULL, 0)) != 0) {
  50                 goto out;
  51         }
  52         /* Now owned by the config */
  53         backend = NULL;
  54
  55         git_config_foreach(cfg, foreach_cb, NULL);
  56  out:
  57         git_config_backend_free(backend);
  58         git_config_free(cfg);
  59
  60         return 0;
  61 }