Date: Wed, 4 Sep 1996 22:18:08 -0700 (PDT) From: "David E. O'Brien" <obrien@Nuxi.cs.ucdavis.edu> To: FreeBSD-gnats-submit@freebsd.org Cc: obrien@Nuxi.com Subject: bin/1567: useful option to /usr/bin/lock Message-ID: <199609050518.WAA21759@relay.nuxi.com> Resent-Message-ID: <199609050520.WAA22475@freefall.freebsd.org>
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>Number: 1567
>Category: bin
>Synopsis: /usr/bin/lock cannot lock terminal indefinately
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Class: change-request
>Submitter-Id: current-users
>Arrival-Date: Wed Sep 4 22:20:01 PDT 1996
>Last-Modified:
>Originator: David E. O'Brien
>Organization:
University of California, Davis
>Release: FreeBSD 2.1.5-RELEASE i386
>Environment:
Nothing special
>Description:
/usr/bin/lock can be used to lock a terminal much like xlock does
for your X-windows session. Problem is, /usr/bin/lock cannot lock
your terminal indefinately. Rather you must specify a timeout
value, after which, your terminal is unlocked and become unsecured.
I have added a ``-n'' no timeout option to /usr/bin/lock
Currently the only way to get this functionality is to use a huge
timeout value and hope it is long enought (in time). This method
also requires you to know the maxium number of minutes you are
allowed to specify.
>How-To-Repeat:
/usr/bin/lock
You terminal will become unsecured in 15 mintues (by default).
>Fix:
--- lock.c.orig Fri May 27 05:32:03 1994
+++ lock.c Sat Aug 3 17:59:26 1996
@@ -70,6 +70,7 @@
struct timeval zerotime;
struct sgttyb tty, ntty;
long nexttime; /* keep the timeout time */
+int no_timeout; /* lock terminal forever */
/*ARGSUSED*/
main(argc, argv)
@@ -90,7 +91,8 @@
sectimeout = TIMEOUT;
mypw = NULL;
usemine = 0;
- while ((ch = getopt(argc, argv, "pt:")) != EOF)
+ no_timeout = 0;
+ while ((ch = getopt(argc, argv, "npt:")) != EOF)
switch((char)ch) {
case 't':
if ((sectimeout = atoi(optarg)) <= 0) {
@@ -108,10 +110,13 @@
}
mypw = strdup(pw->pw_passwd);
break;
+ case 'n':
+ no_timeout = 1;
+ break;
case '?':
default:
(void)fprintf(stderr,
- "usage: lock [-p] [-t timeout]\n");
+ "usage: lock [-n] [-p] [-t timeout]\n");
exit(1);
}
timeout.tv_sec = sectimeout * 60;
@@ -169,11 +174,17 @@
ntimer.it_interval = zerotime;
ntimer.it_value = timeout;
- setitimer(ITIMER_REAL, &ntimer, &otimer);
+ if (!no_timeout)
+ setitimer(ITIMER_REAL, &ntimer, &otimer);
/* header info */
+ if (no_timeout) {
+(void)printf("lock: %s on %s. no timeout\ntime now is %.20s%s%s",
+ ttynam, hostname, ap, tzn, ap + 19);
+ } else {
(void)printf("lock: %s on %s. timeout in %d minutes\ntime now is %.20s%s%s",
ttynam, hostname, sectimeout, ap, tzn, ap + 19);
+ }
for (;;) {
(void)printf("Key: ");
@@ -201,9 +212,16 @@
{
struct timeval timval;
- if (!gettimeofday(&timval, (struct timezone *)NULL))
-(void)printf("lock: type in the unlock key. timeout in %ld:%ld minutes\n",
- (nexttime - timval.tv_sec) / 60, (nexttime - timval.tv_sec) % 60);
+ if (!gettimeofday(&timval, (struct timezone *)NULL)) {
+ (void)printf("lock: type in the unlock key. ");
+ if (no_timeout) {
+ (void)putchar('\n');
+ } else {
+ (void)printf("timeout in %ld:%ld minutes\n",
+ (nexttime - timval.tv_sec) / 60,
+ (nexttime - timval.tv_sec) % 60);
+ }
+ }
}
void
@@ -217,7 +235,9 @@
void
bye()
{
- (void)ioctl(0, TIOCSETP, &tty);
- (void)printf("lock: timeout\n");
- exit(1);
+ if (!no_timeout) {
+ (void)ioctl(0, TIOCSETP, &tty);
+ (void)printf("lock: timeout\n");
+ exit(1);
+ }
}
--- lock.1.orig Fri May 27 05:32:03 1994
+++ lock.1 Wed Sep 4 22:11:13 1996
@@ -39,6 +39,7 @@
.Nd reserve a terminal
.Sh SYNOPSIS
.Nm lock
+.Op Fl n
.Op Fl p
.Op Fl t Ar timeout
.Sh DESCRIPTION
@@ -53,6 +54,8 @@
Options:
.Pp
.Bl -tag -width Fl
+.It Fl n
+Don't use a timeout value. Terminal will be locked forever.
.It Fl p
A password is not requested, instead the user's current login password
is used.
>Audit-Trail:
>Unformatted:
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