Function parse_args_recurse

bubblewrap.c:1778–2792

}

static void
parse_args_recurse (int          *argcp,
                    const char ***argvp,
                    bool          in_file,
                    int          *total_parsed_argc_p)
{
  SetupOp *op;
  int argc = *argcp;
  const char **argv = *argvp;
  /* I can't imagine a case where someone wants more than this.
   * If you do...you should be able to pass multiple files
   * via a single tmpfs and linking them there, etc.
   *
   * We're adding this hardening due to precedent from
   * http://googleprojectzero.blogspot.com/2014/08/the-poisoned-nul-byte-2014-edition.html
   *
   * I picked 9000 because the Internet told me to and it was hard to
   * resist.
   */
  static const int32_t MAX_ARGS = 9000;

  if (*total_parsed_argc_p > MAX_ARGS)
    die ("Exceeded maximum number of arguments %u", MAX_ARGS);

  while (argc > 0)
    {
      const char *arg = argv[0];

      if (strcmp (arg, "--help") == 0)
        {
          usage (EXIT_SUCCESS, stdout);
        }
      else if (strcmp (arg, "--version") == 0)
        {
          print_version_and_exit ();
        }
      else if (strcmp (arg, "--args") == 0)
        {
          int the_fd;
          char *endptr;
          const char *p, *data_end;
          size_t data_len;
          cleanup_free const char **data_argv = NULL;
          const char **data_argv_copy;
          int data_argc;
          int i;

          if (in_file)
            die ("--args not supported in arguments file");

          if (argc < 2)
            die ("--args takes an argument");

          the_fd = strtol (argv[1], &endptr, 10);
          if (argv[1][0] == 0 || endptr[0] != 0 || the_fd < 0)
            die ("Invalid fd: %s", argv[1]);

          /* opt_args_data is essentially a recursive argv array, which we must