glib/fuzzing/fuzz_paths.c

/*
 * Copyright 2021 Endless OS Foundation, LLC
 *
 * SPDX-License-Identifier: LGPL-2.1-or-later
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
 */

#include "fuzz.h"

int
LLVMFuzzerTestOneInput (const unsigned char *data, size_t size)
{
  unsigned char *nul_terminated_data = NULL;
  const gchar *skipped_root G_GNUC_UNUSED  /* when compiling with G_DISABLE_ASSERT */;
  gchar *basename = NULL, *dirname = NULL;

  fuzz_set_logging_func ();

  /* ignore @size (none of the functions support it); ensure @data is nul-terminated */
  nul_terminated_data = (unsigned char *) g_strndup ((const gchar *) data, size);

  g_path_is_absolute ((const gchar *) nul_terminated_data);

  skipped_root = g_path_skip_root ((const gchar *) nul_terminated_data);
  g_assert (skipped_root == NULL || skipped_root >= (const gchar *) nul_terminated_data);
  g_assert (skipped_root == NULL || skipped_root <= (const gchar *) nul_terminated_data + size);

  basename = g_path_get_basename ((const gchar *) nul_terminated_data);
  g_assert (strcmp (basename, ".") == 0 || strlen (basename) <= size);

  dirname = g_path_get_dirname ((const gchar *) nul_terminated_data);
  g_assert (strcmp (dirname, ".") == 0 || strlen (dirname) <= size);

  g_free (nul_terminated_data);
  g_free (dirname);
  g_free (basename);

  return 0;
}