src/tests/fuzz-lxc-define-load.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include "config.h"
   4
   5 #include <stddef.h>
   6 #include <stdint.h>
   7
   8 #include "conf.h"
   9 #include "confile.h"
  10 #include "lxctest.h"
  11 #include "utils.h"
  12
  13 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  14         __do_free char *new_str = NULL;
  15         struct lxc_container *c = NULL;
  16         struct lxc_list defines;
  17         struct lxc_list *it;
  18         __do_close int devnull_fd = -EBADF;
  19
  20         if (size > 102400)
  21                 return 0;
  22
  23         c = lxc_container_new("FUZZ", NULL);
  24         lxc_test_assert_abort(c);
  25
  26         new_str = (char *)malloc(size+1);
  27         lxc_test_assert_abort(new_str);
  28         memcpy(new_str, data, size);
  29         new_str[size] = '\0';
  30
  31         lxc_list_init(&defines);
  32
  33         if (lxc_config_define_add(&defines, new_str) < 0)
  34                 goto out;
  35
  36         if (!lxc_config_define_load(&defines, c))
  37                 goto out;
  38
  39         devnull_fd = open_devnull();
  40         lxc_test_assert_abort(devnull_fd >= 0);
  41
  42         lxc_list_for_each(it, &defines) {
  43                 __do_free char *val = NULL;
  44                 struct new_config_item *config_item = it->elem;
  45                 int len;
  46
  47                 len = c->get_config_item(c, config_item->key, NULL, 0);
  48                 if (len < 0)
  49                         continue;
  50
  51                 val = (char *)malloc(len + 1);
  52                 lxc_test_assert_abort(val);
  53
  54                 if (c->get_config_item(c, config_item->key, val, len + 1) != len)
  55                         continue;
  56
  57                 if (len > 0)
  58                         dprintf(devnull_fd, "[%s/%s]\n", config_item->key, val);
  59         }
  60
  61 out:
  62         lxc_container_put(c);
  63         lxc_config_define_free(&defines);
  64
  65         return 0;
  66 }