/* vi: set sw=4 ts=4: */
+
/*
* vlock implementation for busybox
*
* Copyright (C) 2000 by spoon <spoon@ix.netcom.com>
* Written by spoon <spon@ix.netcom.com>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
/* Shoutz to Michael K. Johnson <johnsonm@redhat.com>, author of the
/* Fixed by Erik Andersen to do passwords the tinylogin way...
* It now works with md5, sha1, etc passwords. */
-#include <stdio.h>
-#include <stdlib.h>
+#include "libbb.h"
#include <sys/vt.h>
-#include <signal.h>
-#include <string.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <sys/ioctl.h>
-#include <termios.h>
-
-#include "busybox.h"
-
-static struct passwd *pw;
-static struct vt_mode ovtm;
-static struct termios oterm;
-static int vfd;
-static unsigned long o_lock_all;
+
+enum { vfd = 3 };
+
+/* static unsigned long o_lock_all; */
static void release_vt(int signo)
{
- if (!o_lock_all)
- ioctl(vfd, VT_RELDISP, 1);
- else
- ioctl(vfd, VT_RELDISP, 0);
+ ioctl(vfd, VT_RELDISP, (unsigned long) !option_mask32 /*!o_lock_all*/);
}
static void acquire_vt(int signo)
ioctl(vfd, VT_RELDISP, VT_ACKACQ);
}
-static void restore_terminal(void)
-{
- ioctl(vfd, VT_SETMODE, &ovtm);
- tcsetattr(STDIN_FILENO, TCSANOW, &oterm);
-}
-
+int vlock_main(int argc, char **argv);
int vlock_main(int argc, char **argv)
{
sigset_t sig;
struct sigaction sa;
struct vt_mode vtm;
struct termios term;
+ struct termios oterm;
+ struct vt_mode ovtm;
+ uid_t uid;
+ struct passwd *pw;
+
+ uid = getuid();
+ pw = getpwuid(uid);
+ if (pw == NULL)
+ bb_error_msg_and_die("unknown uid %d", uid);
if (argc > 2) {
bb_show_usage();
}
- o_lock_all = bb_getopt_ulflags (argc, argv, "a");
-
- if((pw = getpwuid(getuid())) == NULL) {
- bb_error_msg_and_die("Unknown uid %d", getuid());
- }
+ /*o_lock_all = */getopt32(argv, "a");
- vfd = bb_xopen(CURRENT_TTY, O_RDWR);
-
- if (ioctl(vfd, VT_GETMODE, &vtm) < 0) {
- bb_perror_msg_and_die("VT_GETMODE");
- }
+ /* Avoid using statics - use constant fd */
+ xmove_fd(xopen(CURRENT_TTY, O_RDWR), vfd);
+ xioctl(vfd, VT_GETMODE, &vtm);
/* mask a bunch of signals */
sigprocmask(SIG_SETMASK, NULL, &sig);
tcsetattr(STDIN_FILENO, TCSANOW, &term);
do {
- printf("Virtual Console%s locked.\n%s's ", (o_lock_all) ? "s" : "", pw->pw_name);
- fflush(stdout);
- if (correct_password (pw)) {
+ printf("Virtual console%s locked by %s.\n",
+ option_mask32 /*o_lock_all*/ ? "s" : "",
+ pw->pw_name);
+ if (correct_password(pw)) {
break;
}
bb_do_delay(FAIL_DELAY);
- puts("Password incorrect.");
+ puts("Password incorrect");
} while (1);
- restore_terminal();
- return 0;
-}
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/
+ ioctl(vfd, VT_SETMODE, &ovtm);
+ tcsetattr(STDIN_FILENO, TCSANOW, &oterm);
+ fflush_stdout_and_exit(0);
+}