/*
- * Copyright 1991 - 1993, Julianne Frances Haugh
+ * Copyright (c) 1991 - 1993, Julianne Frances Haugh
+ * Copyright (c) 1996 - 2000, Marek Michałkiewicz
+ * Copyright (c) 2001 - 2006, Tomasz Kłoczko
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
- * 3. Neither the name of Julianne F. Haugh nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
+ * 3. The name of the copyright holders or contributors may not be used to
+ * endorse or promote products derived from this software without
+ * specific prior written permission.
*
- * THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <config.h>
-#include "rcsid.h"
-RCSID (PKG_VER "$Id: logoutd.c,v 1.24 2004/10/11 06:26:40 kloczek Exp $")
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <stdio.h>
-#include <signal.h>
+#ident "$Id$"
+
#include <fcntl.h>
-#include "prototypes.h"
+#include <signal.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/types.h>
#include "defines.h"
-static char *Prog;
+#include "prototypes.h"
+/*
+ * Global variables
+ */
+const char *Prog;
#ifndef DEFAULT_HUP_MESG
-#define DEFAULT_HUP_MESG "login time exceeded\r\n"
+#define DEFAULT_HUP_MESG _("login time exceeded\n\n")
#endif
#ifndef HUP_MESG_FILE
#define HUP_MESG_FILE "/etc/logoutd.mesg"
#endif
-#if HAVE_UTMPX_H
-static int check_login (const struct utmpx *);
-#else
-static int check_login (const struct utmp *);
-#endif
+/* local function prototypes */
+#ifdef USE_UTMPX
+static int check_login (const struct utmpx *ut);
+#else /* !USE_UTMPX */
+static int check_login (const struct utmp *ut);
+#endif /* !USE_UTMPX */
+static void send_mesg_to_tty (int tty_fd);
/*
* check_login - check if user (struct utmpx/utmp) allowed to stay logged in
*/
-#if HAVE_UTMPX_H
+#ifdef USE_UTMPX
static int check_login (const struct utmpx *ut)
-#else
+#else /* !USE_UTMPX */
static int check_login (const struct utmp *ut)
-#endif
+#endif /* !USE_UTMPX */
{
char user[sizeof (ut->ut_user) + 1];
time_t now;
strncpy (user, ut->ut_user, sizeof (ut->ut_user));
user[sizeof (ut->ut_user)] = '\0';
- time (&now);
+ (void) time (&now);
/*
* Check if they are allowed to be logged in right now.
*/
- if (!isttytime (user, ut->ut_line, now))
+ if (!isttytime (user, ut->ut_line, now)) {
return 0;
+ }
return 1;
}
{
TERMIO oldt, newt;
FILE *mesg_file, *tty_file;
- int c, is_tty;
+ bool is_tty;
tty_file = fdopen (tty_fd, "w");
- if (!tty_file)
+ if (NULL == tty_file) {
return;
+ }
is_tty = (GTTY (tty_fd, &oldt) == 0);
if (is_tty) {
}
mesg_file = fopen (HUP_MESG_FILE, "r");
- if (mesg_file) {
+ if (NULL != mesg_file) {
+ int c;
while ((c = getc (mesg_file)) != EOF) {
- if (c == '\n')
+ if (c == '\n') {
putc ('\r', tty_file);
+ }
putc (c, tty_file);
}
fclose (mesg_file);
* utmpx/utmp file is periodically scanned and offending users are logged
* off from the system.
*/
-
int main (int argc, char **argv)
{
int i;
int status;
pid_t pid;
-#if HAVE_UTMPX_H
+#ifdef USE_UTMPX
struct utmpx *ut;
-#else
+#else /* !USE_UTMPX */
struct utmp *ut;
-#endif
+#endif /* !USE_UTMPX */
char user[sizeof (ut->ut_user) + 1]; /* terminating NUL */
char tty_name[sizeof (ut->ut_line) + 6]; /* /dev/ + NUL */
int tty_fd;
- setlocale (LC_ALL, "");
- bindtextdomain (PACKAGE, LOCALEDIR);
- textdomain (PACKAGE);
+ if (1 != argc) {
+ (void) fputs (_("Usage: logoutd\n"), stderr);
+ }
+
+ (void) setlocale (LC_ALL, "");
+ (void) bindtextdomain (PACKAGE, LOCALEDIR);
+ (void) textdomain (PACKAGE);
#ifndef DEBUG
for (i = 0; close (i) == 0; i++);
-#ifdef HAVE_SETPGRP
-#ifdef SETPGRP_VOID
- setpgrp (); /* USG */
-#else
- setpgrp (getpid (), getpid ());
-#endif
-#else /* !HAVE_SETPGRP */
- setpgid (getpid (), getpid ()); /* BSD || SUN || SUN4 */
-#endif /* !HAVE_SETPGRP */
+ setpgrp ();
/*
* Put this process in the background.
*/
-
pid = fork ();
if (pid > 0) {
/* parent */
- exit (0);
+ exit (EXIT_SUCCESS);
} else if (pid < 0) {
/* error */
perror ("fork");
- exit (1);
+ exit (EXIT_FAILURE);
}
#endif /* !DEBUG */
/*
* Start syslogging everything
*/
-
Prog = Basename (argv[0]);
OPENLOG ("logoutd");
* Scan the utmpx/utmp file once per minute looking for users that
* are not supposed to still be logged in.
*/
-
- while (1) {
+ while (true) {
/*
* Attempt to re-open the utmpx/utmp file. The file is only
* open while it is being used.
*/
-
-#if HAVE_UTMPX_H
+#ifdef USE_UTMPX
setutxent ();
-#else
+#else /* !USE_UTMPX */
setutent ();
-#endif
+#endif /* !USE_UTMPX */
/*
* Read all of the entries in the utmpx/utmp file. The entries
* for login sessions will be checked to see if the user
* is permitted to be signed on at this time.
*/
-
-#if HAVE_UTMPX_H
- while ((ut = getutxent ())) {
-#else
- while ((ut = getutent ())) {
-#endif
-#ifdef USER_PROCESS
- if (ut->ut_type != USER_PROCESS)
+#ifdef USE_UTMPX
+ while ((ut = getutxent ()) != NULL)
+#else /* !USE_UTMPX */
+ while ((ut = getutent ()) != NULL)
+#endif /* !USE_UTMPX */
+ {
+ if (ut->ut_type != USER_PROCESS) {
continue;
-#endif
- if (ut->ut_user[0] == '\0')
+ }
+ if (ut->ut_user[0] == '\0') {
continue;
- if (check_login (ut))
+ }
+ if (check_login (ut)) {
continue;
+ }
/*
* Put the rest of this in a child process. This
}
/* child */
- if (strncmp (ut->ut_line, "/dev/", 5) != 0)
+ if (strncmp (ut->ut_line, "/dev/", 5) != 0) {
strcpy (tty_name, "/dev/");
- else
+ } else {
tty_name[0] = '\0';
+ }
strcat (tty_name, ut->ut_line);
#ifndef O_NOCTTY
#define O_NOCTTY 0
#endif
tty_fd =
- open (tty_name,
- O_WRONLY | O_NDELAY | O_NOCTTY);
+ open (tty_name, O_WRONLY | O_NDELAY | O_NOCTTY);
if (tty_fd != -1) {
send_mesg_to_tty (tty_fd);
close (tty_fd);
sleep (10);
}
-#ifdef USER_PROCESS /* USG_UTMP */
+
if (ut->ut_pid > 1) {
kill (-ut->ut_pid, SIGHUP);
sleep (10);
kill (-ut->ut_pid, SIGKILL);
}
-#else /* BSD || SUN || SUN4 */
- /*
- * vhangup() the line to kill try and kill
- * whatever is out there using it.
- */
-
- if ((tty_fd =
- open (tty_name, O_RDONLY | O_NDELAY)) == -1)
- continue;
-
- vhangup (tty_fd);
- close (tty_fd);
-#endif /* BSD || SUN || SUN4 */
strncpy (user, ut->ut_user, sizeof (user) - 1);
user[sizeof (user) - 1] = '\0';
SYSLOG ((LOG_NOTICE,
- "logged off user `%s' on `%s'", user,
+ "logged off user '%s' on '%s'", user,
tty_name));
/*
* This child has done all it can, drop dead.
*/
-
- exit (0);
+ exit (EXIT_SUCCESS);
}
-#if HAVE_UTMPX_H
+#ifdef USE_UTMPX
endutxent ();
-#else
+#else /* !USE_UTMPX */
endutent ();
-#endif
+#endif /* !USE_UTMPX */
#ifndef DEBUG
sleep (60);
/*
* Reap any dead babies ...
*/
-
while (wait (&status) != -1);
}
- return 1;
- /* NOT REACHED */
+
+ return EXIT_FAILURE;
}
+
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