From: Keith Bostic <bostic@ucbvax.Berkeley.EDU>
Date: Sat, 18 Mar 1989 04:46:00 +0000 (-0800)
Subject: add in -r flag for shadow password package
X-Git-Tag: BSD-4_3_Tahoe-Snapshot-Development~630
X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/commitdiff_plain/d0faf133f8994c298af6b689e9fe29681bf842a8

add in -r flag for shadow password package

SCCS-vsn: usr.bin/login/login.c 5.32.1.3
---

diff --git a/usr/src/usr.bin/login/login.c b/usr/src/usr.bin/login/login.c
index 80ac767e3a..3b5a1b7198 100644
--- a/usr/src/usr.bin/login/login.c
+++ b/usr/src/usr.bin/login/login.c
@@ -22,11 +22,12 @@ char copyright[] =
 #endif /* not lint */
 
 #ifndef lint
-static char sccsid[] = "@(#)login.c	5.37 (Berkeley) %G%";
+static char sccsid[] = "@(#)login.c	5.32.1.3 (Berkeley) %G%";
 #endif /* not lint */
 
 /*
  * login [ name ]
+ * login -r hostname	(for rlogind)
  * login -h hostname	(for telnetd, etc.)
  * login -f name	(for pre-authenticated login: datakit, xterm, etc.)
  */
@@ -93,7 +94,7 @@ main(argc, argv)
 	struct group *gr;
 	register int ch;
 	register char *p;
-	int ask, fflag, hflag, pflag, cnt;
+	int ask, fflag, hflag, pflag, rflag, cnt;
 	int quietlog, passwd_req, ioctlval, timedout();
 	char *domain, *salt, *envinit[1], *ttyn, *pp;
 	char tbuf[MAXPATHLEN + 2];
@@ -110,6 +111,7 @@ main(argc, argv)
 
 	/*
 	 * -p is used by getty to tell login not to destroy the environment
+	 * -r is used by rlogind to cause the autologin protocol;
  	 * -f is used to skip a second login authentication 
 	 * -h is used by other servers to pass the name of the remote
 	 *    host to login so that it may be placed in utmp and wtmp
@@ -117,11 +119,16 @@ main(argc, argv)
 	(void)gethostname(tbuf, sizeof(tbuf));
 	domain = index(tbuf, '.');
 
-	fflag = hflag = pflag = 0;
+	fflag = hflag = pflag = rflag = 0;
 	passwd_req = 1;
-	while ((ch = getopt(argc, argv, "fh:p")) != EOF)
+	while ((ch = getopt(argc, argv, "fh:pr:")) != EOF)
 		switch (ch) {
 		case 'f':
+			if (rflag) {
+				fprintf(stderr,
+				    "login: only one of -r and -f allowed.\n");
+				exit(1);
+			}
 			fflag = 1;
 			break;
 		case 'h':
@@ -130,6 +137,11 @@ main(argc, argv)
 				    "login: -h for super-user only.\n");
 				exit(1);
 			}
+			if (rflag) {
+				fprintf(stderr,
+				    "login: only one of -r and -h allowed.\n");
+				exit(1);
+			}
 			hflag = 1;
 			if (domain && (p = index(optarg, '.')) &&
 			    strcasecmp(p, domain) == 0)
@@ -139,6 +151,29 @@ main(argc, argv)
 		case 'p':
 			pflag = 1;
 			break;
+		case 'r':
+			if (hflag || fflag) {
+				fprintf(stderr,
+				    "login: -f and -h not allowed with -r.\n");
+				exit(1);
+			}
+			if (getuid()) {
+				fprintf(stderr,
+				    "login: -r for super-user only.\n");
+				exit(1);
+			}
+			/* "-r hostname" must be last args */
+			if (optind != argc) {
+				fprintf(stderr, "Syntax error.\n");
+				exit(1);
+			}
+			rflag = 1;
+			passwd_req = (doremotelogin(optarg) == -1);
+			if (domain && (p = index(optarg, '.')) &&
+			    !strcmp(p, domain))
+				*p = '\0';
+			hostname = optarg;
+			break;
 		case '?':
 		default:
 			fprintf(stderr, "usage: login [-fp] [username]\n");
@@ -151,12 +186,21 @@ main(argc, argv)
 		ask = 0;
 	} else
 		ask = 1;
+	if (rflag)
+		ask = 0;
 
 	ioctlval = 0;
 	(void)ioctl(0, TIOCLSET, &ioctlval);
 	(void)ioctl(0, TIOCNXCL, 0);
 	(void)fcntl(0, F_SETFL, ioctlval);
 	(void)ioctl(0, TIOCGETP, &sgttyb);
+
+	/*
+	 * If talking to an rlogin process, propagate the terminal type and
+	 * baud rate across the network.
+	 */
+	if (rflag)
+		doremoteterm(&sgttyb);
 	sgttyb.sg_erase = CERASE;
 	sgttyb.sg_kill = CKILL;
 	(void)ioctl(0, TIOCSLTC, &ltc);
@@ -349,7 +393,7 @@ main(argc, argv)
 
 	dolastlog(quietlog);
 
-	if (!hflag) {					/* XXX */
+	if (!hflag && !rflag) {					/* XXX */
 		static struct winsize win = { 0, 0, 0, 0 };
 
 		(void)ioctl(0, TIOCSWINSZ, &win);
@@ -576,3 +620,46 @@ sleepexit(eval)
 	sleep((u_int)5);
 	exit(eval);
 }
+
+doremotelogin(host)
+	char *host;
+{
+	static char lusername[UT_NAMESIZE+1];
+	char rusername[UT_NAMESIZE+1];
+
+	getstr(rusername, sizeof(rusername), "remuser");
+	getstr(lusername, sizeof(lusername), "locuser");
+	getstr(term, sizeof(term), "Terminal type");
+	username = lusername;
+	pwd = getpwnam(username);
+	if (pwd == NULL)
+		return(-1);
+	return(ruserok(host, (pwd->pw_uid == 0), rusername, username));
+}
+
+char *speeds[] = {
+	"0", "50", "75", "110", "134", "150", "200", "300", "600",
+	"1200", "1800", "2400", "4800", "9600", "19200", "38400",
+};
+#define	NSPEEDS	(sizeof(speeds) / sizeof(speeds[0]))
+
+doremoteterm(tp)
+	struct sgttyb *tp;
+{
+	register char *cp = index(term, '/'), **cpp;
+	char *speed;
+
+	if (cp) {
+		*cp++ = '\0';
+		speed = cp;
+		cp = index(speed, '/');
+		if (cp)
+			*cp++ = '\0';
+		for (cpp = speeds; cpp < &speeds[NSPEEDS]; cpp++)
+			if (strcmp(*cpp, speed) == 0) {
+				tp->sg_ispeed = tp->sg_ospeed = cpp-speeds;
+				break;
+			}
+	}
+	tp->sg_flags = ECHO|CRMOD|ANYP|XTABS;
+}