2 * SPDX-License-Identifier: ISC
4 * Copyright (c) 2013-2016 Todd C. Miller <Todd.Miller@sudo.ws>
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 #include <sys/types.h>
26 #endif /* HAVE_STRING_H */
29 #endif /* HAVE_STRINGS_H */
34 #include "sudo_compat.h"
35 #include "sudo_fatal.h"
36 #include "sudo_util.h"
37 #include "sudo_debug.h"
39 __dso_public int main(int argc, char *argv[]);
41 int sudo_debug_instance = SUDO_DEBUG_INSTANCE_INITIALIZER;
42 extern char *get_process_ttyname(char *name, size_t namelen);
45 main(int argc, char *argv[])
47 char *tty_libc = NULL, *tty_sudo = NULL;
48 char pathbuf[PATH_MAX];
51 initprogname(argc > 0 ? argv[0] : "check_ttyname");
53 /* Lookup tty name using kernel info if possible. */
54 if (get_process_ttyname(pathbuf, sizeof(pathbuf)) != NULL)
57 #if defined(HAVE_KINFO_PROC2_NETBSD) || \
58 defined(HAVE_KINFO_PROC_OPENBSD) || \
59 defined(HAVE_KINFO_PROC_FREEBSD) || \
60 defined(HAVE_KINFO_PROC_44BSD) || \
61 defined(HAVE__TTYNAME_DEV) || defined(HAVE_STRUCT_PSINFO_PR_TTYDEV) || \
62 defined(HAVE_PSTAT_GETPROC) || defined(__linux__)
64 /* Lookup tty name attached to stdin via libc. */
65 tty_libc = ttyname(STDIN_FILENO);
68 /* Compare libc and kernel ttys. */
69 if (tty_libc != NULL && tty_sudo != NULL) {
70 if (strcmp(tty_libc, tty_sudo) == 0)
72 } else if (tty_libc == NULL && tty_sudo == NULL) {
77 printf("%s: OK (%s)\n", getprogname(), tty_sudo ? tty_sudo : "none");
78 } else if (tty_libc == NULL) {
79 printf("%s: SKIP (%s)\n", getprogname(), tty_sudo ? tty_sudo : "none");
82 printf("%s: FAIL %s (sudo) vs. %s (libc)\n", getprogname(),
83 tty_sudo ? tty_sudo : "none", tty_libc ? tty_libc : "none");