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/*
* Copyright (c) 2013-2016 Todd C. Miller <Todd.Miller@sudo.ws>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <config.h>
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_STRING_H
# include <string.h>
#endif /* HAVE_STRING_H */
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif /* HAVE_STRINGS_H */
#include <unistd.h>
#include <limits.h>
#include <errno.h>
#include "sudo_compat.h"
#include "sudo_fatal.h"
#include "sudo_util.h"
#include "sudo_debug.h"
__dso_public int main(int argc, char *argv[]);
int sudo_debug_instance = SUDO_DEBUG_INSTANCE_INITIALIZER;
extern char *get_process_ttyname(char *name, size_t namelen);
int
main(int argc, char *argv[])
{
char *tty_libc = NULL, *tty_sudo = NULL;
char pathbuf[PATH_MAX];
int ret = 1;
initprogname(argc > 0 ? argv[0] : "check_ttyname");
/* Lookup tty name using kernel info if possible. */
if (get_process_ttyname(pathbuf, sizeof(pathbuf)) != NULL)
tty_sudo = pathbuf;
#if defined(HAVE_KINFO_PROC2_NETBSD) || \
defined(HAVE_KINFO_PROC_OPENBSD) || \
defined(HAVE_KINFO_PROC_FREEBSD) || \
defined(HAVE_KINFO_PROC_44BSD) || \
defined(HAVE__TTYNAME_DEV) || defined(HAVE_STRUCT_PSINFO_PR_TTYDEV) || \
defined(HAVE_PSTAT_GETPROC) || defined(__linux__)
/* Lookup tty name attached to stdin via libc. */
tty_libc = ttyname(STDIN_FILENO);
#endif
/* Compare libc and kernel ttys. */
if (tty_libc != NULL && tty_sudo != NULL) {
if (strcmp(tty_libc, tty_sudo) == 0)
ret = 0;
} else if (tty_libc == NULL && tty_sudo == NULL) {
ret = 0;
}
if (ret == 0) {
printf("%s: OK (%s)\n", getprogname(), tty_sudo ? tty_sudo : "none");
} else if (tty_libc == NULL) {
printf("%s: SKIP (%s)\n", getprogname(), tty_sudo ? tty_sudo : "none");
ret = 0;
} else {
printf("%s: FAIL %s (sudo) vs. %s (libc)\n", getprogname(),
tty_sudo ? tty_sudo : "none", tty_libc ? tty_libc : "none");
}
return ret;
}
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