LXR busybox/libbb/securetty.c

   1/* vi: set sw=4 ts=4: */
   2/*
   3 * /etc/securetty checking.
   4 *
   5 * Licensed under GPLv2, see file LICENSE in this source tree.
   6 */
   7#include "libbb.h"
   8
   9#if ENABLE_FEATURE_SECURETTY && !ENABLE_PAM
  10int FAST_FUNC is_tty_secure(const char *short_tty)
  11{
  12        char *buf = (char*)"/etc/securetty"; /* any non-NULL is ok */
  13        parser_t *parser = config_open2("/etc/securetty", fopen_for_read);
  14        while (config_read(parser, &buf, 1, 1, "# \t", PARSE_NORMAL)) {
  15                if (strcmp(buf, short_tty) == 0)
  16                        break;
  17                buf = NULL;
  18        }
  19        config_close(parser);
  20        /* buf != NULL here if config file was not found, empty
  21         * or line was found which equals short_tty.
  22         * In all these cases, we report "this tty is secure".
  23         */
  24        return buf != NULL;
  25}
  26#endif
  27