initial import of NetBSD tree

1 files changed, 256 insertions, 0 deletions

diff --git a/usr.bin/lock/lock.c b/usr.bin/lock/lock.c
new file mode 100644
index 00000000000..ea1af6ae1e6
--- /dev/null
+++ b/usr.bin/lock/lock.c
@@ -0,0 +1,256 @@
+/*	$NetBSD: lock.c,v 1.7 1995/06/27 00:16:17 jtc Exp $	*/
+
+/*
+ * Copyright (c) 1980, 1987, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Bob Toxen.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1980, 1987, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)lock.c	8.1 (Berkeley) 6/6/93";
+#endif
+static char rcsid[] = "$NetBSD: lock.c,v 1.7 1995/06/27 00:16:17 jtc Exp $";
+#endif /* not lint */
+
+/*
+ * Lock a terminal up until the given key is entered, until the root
+ * password is entered, or the given interval times out.
+ *
+ * Timeout interval is by default TIMEOUT, it can be changed with
+ * an argument of the form -time where time is in minutes
+ */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <signal.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <string.h>
+#include <termios.h>
+
+#define	TIMEOUT	15
+
+void quit(), bye(), hi();
+
+struct timeval	timeout;
+struct timeval	zerotime;
+struct termios	tty, ntty;
+long	nexttime;			/* keep the timeout time */
+
+/*ARGSUSED*/
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	extern char *optarg;
+	extern int errno, optind;
+	struct passwd *pw;
+	struct timeval timval;
+	struct itimerval ntimer, otimer;
+	struct tm *timp;
+	time_t curtime;
+	int ch, sectimeout, usemine;
+	char *ap, *mypw, *ttynam, *tzn;
+	char hostname[MAXHOSTNAMELEN], s[BUFSIZ], s1[BUFSIZ];
+	char *crypt(), *ttyname();
+
+	sectimeout = TIMEOUT;
+	mypw = NULL;
+	usemine = 0;
+
+	if (!(pw = getpwuid(getuid())))
+		errx(1, "unknown uid %d.", getuid());
+	
+	while ((ch = getopt(argc, argv, "pt:")) != EOF)
+		switch((char)ch) {
+		case 't':
+			if ((sectimeout = atoi(optarg)) <= 0)
+				errx(1, "illegal timeout value: %s", optarg);
+			break;
+		case 'p':
+			usemine = 1;
+			mypw = strdup(pw->pw_passwd);
+			break;
+		case '?':
+		default:
+			(void)fprintf(stderr,
+			    "usage: lock [-p] [-t timeout]\n");
+			exit(1);
+	}
+	timeout.tv_sec = sectimeout * 60;
+
+	setuid(getuid());		/* discard privs */
+
+	if (tcgetattr(0, &tty) < 0)	/* get information for header */
+		exit(1);
+	gethostname(hostname, sizeof(hostname));
+	if (!(ttynam = ttyname(0)))
+		errx(1, "not a terminal?");
+	if (gettimeofday(&timval, (struct timezone *)NULL))
+		err(1, "gettimeofday");
+	curtime = timval.tv_sec;
+	nexttime = timval.tv_sec + (sectimeout * 60);
+	timp = localtime(&curtime);
+	ap = asctime(timp);
+	tzn = timp->tm_zone;
+
+	(void)signal(SIGINT, quit);
+	(void)signal(SIGQUIT, quit);
+	ntty = tty; ntty.c_lflag &= ~ECHO;
+	(void)tcsetattr(0, TCSADRAIN, &ntty);
+
+	if (!mypw) {
+		/* get key and check again */
+		(void)printf("Key: ");
+		if (!fgets(s, sizeof(s), stdin) || *s == '\n')
+			quit();
+		(void)printf("\nAgain: ");
+		/*
+		 * Don't need EOF test here, if we get EOF, then s1 != s
+		 * and the right things will happen.
+		 */
+		(void)fgets(s1, sizeof(s1), stdin);
+		(void)putchar('\n');
+		if (strcmp(s1, s)) {
+			(void)printf("\alock: passwords didn't match.\n");
+			(void)tcsetattr(0, TCSADRAIN, &tty);
+			exit(1);
+		}
+		s[0] = NULL;
+		mypw = s1;
+	}
+
+	/* set signal handlers */
+	(void)signal(SIGINT, hi);
+	(void)signal(SIGQUIT, hi);
+	(void)signal(SIGTSTP, hi);
+	(void)signal(SIGALRM, bye);
+
+	ntimer.it_interval = zerotime;
+	ntimer.it_value = timeout;
+	setitimer(ITIMER_REAL, &ntimer, &otimer);
+
+	/* header info */
+(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: ");
+		if (!fgets(s, sizeof(s), stdin)) {
+			clearerr(stdin);
+			hi();
+			continue;
+		}
+		if (usemine) {
+			s[strlen(s) - 1] = '\0';
+#ifdef SKEY
+			if (strcasecmp(s, "s/key") == 0) {
+				if (skey_auth(pw->pw_name))
+					break;
+			}
+#endif
+			if (!strcmp(mypw, crypt(s, mypw)))
+				break;
+		}
+		else if (!strcmp(s, s1))
+			break;
+		(void)printf("\a\n");
+		if (tcsetattr(0, TCSADRAIN, &ntty) < 0)
+			exit(1);
+	}
+	quit();
+}
+
+#ifdef SKEY
+/*
+ * We can't use libskey's skey_authenticate() since it
+ * handles signals in a way that's inappropriate
+ * for our needs. Instead we roll our own.
+ */
+int
+skey_auth(char *user)
+{
+	char s[128], *ask, *skey_keyinfo __P((char *name));
+	int ret = 0;
+
+	if (!skey_haskey(user) && (ask = skey_keyinfo(user))) {
+		printf("\n[%s]\nResponse: ", ask);		
+		if (!fgets(s, sizeof(s), stdin) || *s == '\n')
+			clearerr(stdin);
+		else {
+			s[strlen(s) - 1] = '\0';
+			if (skey_passcheck(user, s) != -1)
+				ret = 1;
+		}
+	} else
+		printf("Sorry, you have no s/key.\n");
+	return ret;
+}
+#endif
+
+void
+hi()
+{
+	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);
+}
+
+void
+quit()
+{
+	(void)putchar('\n');
+	(void)tcsetattr(0, TCSADRAIN, &tty);
+	exit(0);
+}
+
+void
+bye()
+{
+	(void)tcsetattr(0, TCSADRAIN, &tty);
+	(void)printf("lock: timeout\n");
+	exit(1);
+}