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
is_tty_secure(const char * short_tty)10 int 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