X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/blobdiff_plain/22d4760e1f3fa374781b7a4ef968deeeb9eedc30..af3069b39701920d7b3b67198bfb8309f23f9911:/usr/src/usr.bin/login/login.c.1

diff --git a/usr/src/usr.bin/login/login.c.1 b/usr/src/usr.bin/login/login.c.1
index 7c354c83a9..c2a07cf1b6 100644
--- a/usr/src/usr.bin/login/login.c.1
+++ b/usr/src/usr.bin/login/login.c.1
@@ -1,274 +1,330 @@
+/*
+ * Copyright (c) 1980,1987 Regents of the University of California.
+ * All rights reserved.  The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
+ */
+
 #ifndef lint
-static	char *sccsid = "@(#)login.c.1	4.24 83/05/22";
-#endif
+char copyright[] =
+"@(#) Copyright (c) 1980 Regents of the University of California.\n\
+ All rights reserved.\n";
+#endif not lint
+
+#ifndef lint
+static char sccsid[] = "@(#)login.c.1	5.23 (Berkeley) %G%";
+#endif not lint
 
 /*
  * login [ name ]
- * login -r
+ * login -r hostname	(for rlogind)
+ * login -h hostname	(for telnetd, etc.)
+ * login -f name	(for pre-authenticated login: datakit, xterm, etc.)
  */
 
-#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/quota.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/file.h>
+
 #include <sgtty.h>
 #include <utmp.h>
 #include <signal.h>
 #include <pwd.h>
 #include <stdio.h>
-#include <sys/stat.h>
 #include <lastlog.h>
-#define	QUOTA
-#include <sys/quota.h>
 #include <errno.h>
+#include <ttyent.h>
+#include <syslog.h>
+#include <grp.h>
+
+#define TTYGRPNAME	"tty"		/* name of group to own ttys */
+#define TTYGID(gid)	tty_gid(gid)	/* gid that owns all ttys */
 
+#define	SCMPN(a, b)	strncmp(a, b, sizeof(a))
 #define	SCPYN(a, b)	strncpy(a, b, sizeof(a))
 
 #define NMAX	sizeof(utmp.ut_name)
-#define LMAX	sizeof(utmp.ut_line)
+#define HMAX	sizeof(utmp.ut_host)
 
 #define	FALSE	0
 #define	TRUE	-1
 
 char	nolog[] =	"/etc/nologin";
 char	qlog[]  =	".hushlogin";
-char	securetty[] =	"/etc/securetty";
 char	maildir[30] =	"/usr/spool/mail/";
 char	lastlog[] =	"/usr/adm/lastlog";
 struct	passwd nouser = {"", "nope", -1, -1, -1, "", "", "", "" };
 struct	sgttyb ttyb;
 struct	utmp utmp;
 char	minusnam[16] = "-";
+char	*envinit[1];			/* now set by setenv calls */
+/*
+ * This bounds the time given to login.  We initialize it here
+ * so it can be patched on machines where it's too small.
+ */
+int	timeout = 300;
 
-char	homedir[64] = "HOME=";
-char	shell[64] = "SHELL=";
-char	term[64] = "TERM=";
-char	user[20] = "USER=";
-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]))
-
-char	*envinit[] =
-    {homedir, shell, "PATH=:/usr/ucb:/bin:/usr/bin", term, user, 0};
+char	term[64];
 
 struct	passwd *pwd;
-struct	passwd *getpwnam();
 char	*strcat(), *rindex(), *index();
-int	setpwent();
+int	timedout();
 char	*ttyname();
 char	*crypt();
 char	*getpass();
 char	*stypeof();
-extern	char **environ;
 extern	int errno;
 
-struct	ttychars tc = {
-	CERASE,	CKILL,	CINTR,	CQUIT,	CSTART,
-	CSTOP,	CEOF,	CBRK,	CSUSP,	CDSUSP,
-	CRPRNT,	CFLUSH,	CWERASE,CLNEXT
+struct	tchars tc = {
+	CINTR, CQUIT, CSTART, CSTOP, CEOT, CBRK
+};
+struct	ltchars ltc = {
+	CSUSP, CDSUSP, CRPRNT, CFLUSH, CWERASE, CLNEXT
 };
 
+struct winsize win = { 0, 0, 0, 0 };
+
 int	rflag;
+int	usererr = -1;
 char	rusername[NMAX+1], lusername[NMAX+1];
 char	rpassword[NMAX+1];
 char	name[NMAX+1];
+char	me[MAXHOSTNAMELEN];
 char	*rhost;
 
 main(argc, argv)
-char **argv;
+	char *argv[];
 {
+	extern	char **environ;
 	register char *namep;
-	int t, f, c;
-	int invalid;
-	int quietlog;
-	int i;
+	int pflag = 0, hflag = 0, fflag = 0, t, f, c;
+	int invalid, quietlog;
 	FILE *nlfd;
-	char *ttyn;
+	char *ttyn, *tty;
 	int ldisc = 0, zero = 0;
-	FILE *hostf; int first = 1;
+	char *p, *domain, *index();
 
-	alarm(60);
+	signal(SIGALRM, timedout);
+	alarm(timeout);
 	signal(SIGQUIT, SIG_IGN);
 	signal(SIGINT, SIG_IGN);
-	nice(-100);
-	nice(20);
-	nice(0);
+	setpriority(PRIO_PROCESS, 0, 0);
 	quota(Q_SETUID, 0, 0, 0);
-	if (argc > 1 && !strcmp(argv[1], "-r")) {
-		rflag++;
-		rhost = argv[2];
-		argc = 1;
-		getstr(rusername, sizeof (rusername), "remuser");
-		getstr(lusername, sizeof (lusername), "locuser");
-		getstr(term+5, sizeof(term)-5, "Terminal type");
-		if (getuid())
-			goto abnormal;
-		setpwent();
-		pwd = getpwnam(lusername);
-		endpwent();
-		if (pwd == NULL)
-			goto abnormal;
-		hostf = pwd->pw_uid ? fopen("/etc/hosts.equiv", "r") : 0;
-	again:
-		if (hostf) {
-			char ahost[32];
-
-		        while (fgets(ahost, sizeof (ahost), hostf)) {
-				char *user;
-
-				if ((user = index(ahost, '\n')) != 0)
-					*user++ = '\0';
-				if ((user = index(ahost, ' ')) != 0)
-					*user++ = '\0';
-				if (!strcmp(rhost, ahost) &&
-				    !strcmp(rusername, user ?
-				    user : lusername)) {
-					fclose(hostf);
-					goto normal;
-				}
+	/*
+	 * -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
+	 */
+	(void) gethostname(me, sizeof(me));
+	domain = index(me, '.');
+	while (argc > 1) {
+		if (strcmp(argv[1], "-r") == 0) {
+			if (rflag || hflag || fflag) {
+				printf("Other options not allowed with -r\n");
+				exit(1);
 			}
-			fclose(hostf);
+			if (argv[2] == 0)
+				exit(1);
+			rflag = 1;
+			usererr = doremotelogin(argv[2]);
+			if ((p = index(argv[2], '.')) && strcmp(p, domain) == 0)
+				*p = 0;
+			SCPYN(utmp.ut_host, argv[2]);
+			argc -= 2;
+			argv += 2;
+			continue;
 		}
-		if (first == 1) {
-			char *rhosts = ".rhosts";
-			struct stat sbuf;
-
-			first = 0;
-			if (chdir(pwd->pw_dir) < 0)
-				goto again;
-			if (lstat(rhosts, &sbuf) < 0)
-				goto again;
-			if ((sbuf.st_mode & S_IFMT) == S_IFLNK) {
-				printf("login: .rhosts is a soft link.\r\n");
-				goto abnormal;
+		if (strcmp(argv[1], "-h") == 0) {
+			if (getuid() == 0) {
+				if (rflag || hflag) {
+				    printf("Only one of -r and -h allowed\n");
+				    exit(1);
+				}
+				hflag = 1;
+				if ((p = index(argv[2], '.')) &&
+				    strcmp(p, domain) == 0)
+					*p = 0;
+				SCPYN(utmp.ut_host, argv[2]);
 			}
-			hostf = fopen(rhosts, "r");
-			fstat(fileno(hostf), &sbuf);
-			if ((int) sbuf.st_uid != pwd->pw_uid &&
-			    (int) sbuf.st_uid != 0) {
-				printf("login: Bad .rhosts ownership.\r\n");
-			        fclose(hostf);
-				goto abnormal;
+			argc -= 2;
+			argv += 2;
+			continue;
+		}
+		if (strcmp(argv[1], "-f") == 0 && argc > 2) {
+			if (rflag) {
+				printf("Only one of -r and -f allowed\n");
+				exit(1);
 			}
-		goto again;
+			fflag = 1;
+			SCPYN(utmp.ut_name, argv[2]);
+			argc -= 2;
+			argv += 2;
+			continue;
+		}
+		if (strcmp(argv[1], "-p") == 0) {
+			argc--;
+			argv++;
+			pflag = 1;
+			continue;
 		}
-abnormal:
-		rhost = 0;
-		rflag = -1;
+		break;
 	}
-normal:
-	ioctl(0, TIOCLSET, &zero);	/* XXX */
+	ioctl(0, TIOCLSET, &zero);
 	ioctl(0, TIOCNXCL, 0);
 	ioctl(0, FIONBIO, &zero);
 	ioctl(0, FIOASYNC, &zero);
-	ioctl(0, TIOCGETP, &ttyb);	/* XXX */
-	if (rflag) {
-		char *cp = index(term, '/');
-		if (cp) {
-			int i;
-			*cp++ = 0;
-			for (i = 0; i < NSPEEDS; i++)
-				if (!strcmp(speeds[i], cp)) {
-					ttyb.sg_ispeed = ttyb.sg_ospeed = i;
-					break;
-				}
-		}
-		ttyb.sg_flags = ECHO|CRMOD|ANYP|XTABS;
-	}
-	ioctl(0, TIOCSETP, &ttyb);	/* XXX */
-	ioctl(0, TIOCCSET, &tc);
-	for (t=3; t<20; t++)
+	ioctl(0, TIOCGETP, &ttyb);
+	/*
+	 * If talking to an rlogin process,
+	 * propagate the terminal type and
+	 * baud rate across the network.
+	 */
+	if (rflag)
+		doremoteterm(term, &ttyb);
+	ttyb.sg_erase = CERASE;
+	ttyb.sg_kill = CKILL;
+	ioctl(0, TIOCSLTC, &ltc);
+	ioctl(0, TIOCSETC, &tc);
+	ioctl(0, TIOCSETP, &ttyb);
+	for (t = getdtablesize(); t > 2; t--)
 		close(t);
 	ttyn = ttyname(0);
-	if (ttyn==(char *)0)
+	if (ttyn == (char *)0 || *ttyn == '\0')
 		ttyn = "/dev/tty??";
+	tty = rindex(ttyn, '/');
+	if (tty == NULL)
+		tty = ttyn;
+	else
+		tty++;
+	openlog("login", LOG_ODELAY, LOG_AUTH);
+	t = 0;
+	invalid = FALSE;
 	do {
 		ldisc = 0;
 		ioctl(0, TIOCSETD, &ldisc);
-		invalid = FALSE;
-		SCPYN(utmp.ut_name, "");
-		if (argc>1) {
+		if (fflag == 0)
+			SCPYN(utmp.ut_name, "");
+		/*
+		 * Name specified, take it.
+		 */
+		if (argc > 1) {
 			SCPYN(utmp.ut_name, argv[1]);
 			argc = 0;
 		}
-		if (rflag) {
+		/*
+		 * If remote login take given name,
+		 * otherwise prompt user for something.
+		 */
+		if (rflag && !invalid)
 			SCPYN(utmp.ut_name, lusername);
-			if (rflag == -1)
-				rflag = 0;
-		} else
-			while (utmp.ut_name[0] == '\0') {
-				namep = utmp.ut_name;
-				{ char hostname[32];
-				  gethostname(hostname, sizeof (hostname));
-				  printf("%s login: ", hostname); }
-				while ((c = getchar()) != '\n') {
-					if (c == ' ')
-						c = '_';
-					if (c == EOF)
-						exit(0);
-					if (namep < utmp.ut_name+NMAX)
-						*namep++ = c;
-				}
+		else {
+			getloginname(&utmp);
+			if (utmp.ut_name[0] == '-') {
+				puts("login names may not start with '-'.");
+				invalid = TRUE;
+				continue;
 			}
-		if (rhost == 0) {
-			setpwent();
-			if ((pwd = getpwnam(utmp.ut_name)) == NULL)
-				pwd = &nouser;
-			endpwent();
 		}
+		invalid = FALSE;
 		if (!strcmp(pwd->pw_shell, "/bin/csh")) {
 			ldisc = NTTYDISC;
 			ioctl(0, TIOCSETD, &ldisc);
 		}
-		if (rhost == 0) {
-			if (*pwd->pw_passwd != '\0') {
-				char *pp;
-				nice(-4);
-				if (rflag == 0)
-					pp = getpass("Password:");
-				else
-					pp = rpassword;
-				namep = crypt(pp,pwd->pw_passwd);
-				nice(4);
-				if (strcmp(namep, pwd->pw_passwd))
-					invalid = TRUE;
-			}
+		if (fflag) {
+			int uid = getuid();
+
+			if (uid != 0 && uid != pwd->pw_uid)
+				fflag = 0;
+			/*
+			 * Disallow automatic login for root.
+			 */
+			if (pwd->pw_uid == 0)
+				fflag = 0;
+		}
+		/*
+		 * If no remote login authentication and
+		 * a password exists for this user, prompt
+		 * for one and verify it.
+		 */
+		if (usererr == -1 && fflag == 0 && *pwd->pw_passwd != '\0') {
+			char *pp;
+
+			setpriority(PRIO_PROCESS, 0, -4);
+			pp = getpass("Password:");
+			namep = crypt(pp, pwd->pw_passwd);
+			setpriority(PRIO_PROCESS, 0, 0);
+			if (strcmp(namep, pwd->pw_passwd))
+				invalid = TRUE;
 		}
-		if (pwd->pw_uid != 0 && (nlfd = fopen(nolog, "r")) > 0) {
-			/* logins are disabled except for root */
+		/*
+		 * If user not super-user, check for logins disabled.
+		 */
+		if (pwd->pw_uid != 0 && (nlfd = fopen(nolog, "r"))) {
 			while ((c = getc(nlfd)) != EOF)
 				putchar(c);
 			fflush(stdout);
 			sleep(5);
 			exit(0);
 		}
-		if (!invalid && pwd->pw_uid == 0 &&
-		    !rootterm(ttyn+sizeof("/dev/")-1)) {
-			logerr("ROOT LOGIN REFUSED %s",
-			    ttyn+sizeof("/dev/")-1);
+		/*
+		 * If valid so far and root is logging in,
+		 * see if root logins on this terminal are permitted.
+		 */
+		if (!invalid && pwd->pw_uid == 0 && !rootterm(tty)) {
+			if (utmp.ut_host[0])
+				syslog(LOG_CRIT,
+				    "ROOT LOGIN REFUSED ON %s FROM %.*s",
+				    tty, HMAX, utmp.ut_host);
+			else
+				syslog(LOG_CRIT,
+				    "ROOT LOGIN REFUSED ON %s", tty);
 			invalid = TRUE;
 		}
 		if (invalid) {
 			printf("Login incorrect\n");
-			if (ttyn[sizeof("/dev/tty")-1] == 'd')
-				logerr("BADDIALUP %s %s\n",
-				    ttyn+sizeof("/dev/")-1, utmp.ut_name);
+			if (++t >= 5) {
+				if (utmp.ut_host[0])
+					syslog(LOG_ERR,
+			    "REPEATED LOGIN FAILURES ON %s FROM %.*s, %.*s",
+					    tty, HMAX, utmp.ut_host,
+					    NMAX, utmp.ut_name);
+				else
+					syslog(LOG_ERR,
+				    "REPEATED LOGIN FAILURES ON %s, %.*s",
+						tty, NMAX, utmp.ut_name);
+				ioctl(0, TIOCHPCL, (struct sgttyb *) 0);
+				close(0), close(1), close(2);
+				sleep(10);
+				exit(1);
+			}
 		}
 		if (*pwd->pw_shell == '\0')
 			pwd->pw_shell = "/bin/sh";
-		i = strlen(pwd->pw_shell);
 		if (chdir(pwd->pw_dir) < 0 && !invalid ) {
 			if (chdir("/") < 0) {
 				printf("No directory!\n");
 				invalid = TRUE;
 			} else {
-				printf("No directory!  Logging in with home=/\n");
+				printf("No directory! %s\n",
+				   "Logging in with home=/");
 				pwd->pw_dir = "/";
 			}
 		}
-		if (rflag && invalid)
+		/*
+		 * Remote login invalid must have been because
+		 * of a restriction of some sort, no extra chances.
+		 */
+		if (!usererr && invalid)
 			exit(1);
 	} while (invalid);
+/* committed to login turn off timeout */
+	alarm(0);
 
-	if (quota(Q_SETUID, pwd->pw_uid, 0, 0) < 0) {
+	if (quota(Q_SETUID, pwd->pw_uid, 0, 0) < 0 && errno != EINVAL) {
 		if (errno == EUSERS)
 			printf("%s.\n%s.\n",
 			   "Too many users logged on already",
@@ -276,80 +332,81 @@ normal:
 		else if (errno == EPROCLIM)
 			printf("You have too many processes running.\n");
 		else
-			perror("setuid");
+			perror("quota (Q_SETUID)");
 		sleep(5);
 		exit(0);
 	}
 	time(&utmp.ut_time);
-	t = ttyslot();
-	if (t>0 && (f = open("/etc/utmp", 1)) >= 0) {
-		lseek(f, (long)(t*sizeof(utmp)), 0);
-		SCPYN(utmp.ut_line, rindex(ttyn, '/')+1);
-		write(f, (char *)&utmp, sizeof(utmp));
-		close(f);
-	}
-	if (t>0 && (f = open("/usr/adm/wtmp", 1)) >= 0) {
-		lseek(f, 0L, 2);
-		write(f, (char *)&utmp, sizeof(utmp));
-		close(f);
-	}
-	quietlog = 0;
-	if (access(qlog, 0) == 0)
-		quietlog = 1;
-	if ((f = open(lastlog, 2)) >= 0) {
+	SCPYN(utmp.ut_line, tty);
+	login(&utmp);
+	quietlog = access(qlog, F_OK) == 0;
+	if ((f = open(lastlog, O_RDWR)) >= 0) {
 		struct lastlog ll;
 
 		lseek(f, (long)pwd->pw_uid * sizeof (struct lastlog), 0);
 		if (read(f, (char *) &ll, sizeof ll) == sizeof ll &&
-		    ll.ll_time != 0) {
-			if (quietlog == 0)
-			printf("Last login: %.*s on %.*s\n"
-			    , 24-5
-			    , (char *) ctime(&ll.ll_time)
-			    , sizeof(ll.ll_line)
-			    , ll.ll_line
-			);
+		    ll.ll_time != 0 && !quietlog) {
+			printf("Last login: %.*s ",
+			    24-5, (char *)ctime(&ll.ll_time));
+			if (*ll.ll_host != '\0')
+				printf("from %.*s\n",
+				    sizeof (ll.ll_host), ll.ll_host);
+			else
+				printf("on %.*s\n",
+				    sizeof (ll.ll_line), ll.ll_line);
 		}
 		lseek(f, (long)pwd->pw_uid * sizeof (struct lastlog), 0);
 		time(&ll.ll_time);
-		SCPYN(ll.ll_line, rindex(ttyn, '/')+1);
+		SCPYN(ll.ll_line, tty);
+		SCPYN(ll.ll_host, utmp.ut_host);
 		write(f, (char *) &ll, sizeof ll);
 		close(f);
 	}
-	chown(ttyn, pwd->pw_uid, pwd->pw_gid);
-	chmod(ttyn, 0622);
+	chown(ttyn, pwd->pw_uid, TTYGID(pwd->pw_gid));
+	if (!hflag && !rflag)					/* XXX */
+		ioctl(0, TIOCSWINSZ, &win);
+	chmod(ttyn, 0620);
 	setgid(pwd->pw_gid);
 	strncpy(name, utmp.ut_name, NMAX);
 	name[NMAX] = '\0';
 	initgroups(name, pwd->pw_gid);
 	quota(Q_DOWARN, pwd->pw_uid, (dev_t)-1, 0);
 	setuid(pwd->pw_uid);
-	environ = envinit;
-	strncat(homedir, pwd->pw_dir, sizeof(homedir)-6);
-	strncat(shell, pwd->pw_shell, sizeof(shell)-7);
-	if (term[strlen("TERM=")] == 0)
-		strncat(term, stypeof(ttyn), sizeof(term)-6);
-	strncat(user, pwd->pw_name, sizeof(user)-6);
+
+	/* destroy environment unless user has asked to preserve it */
+	if (!pflag)
+		environ = envinit;
+	setenv("HOME", pwd->pw_dir, 1);
+	setenv("SHELL", pwd->pw_shell, 1);
+	if (term[0] == '\0')
+		strncpy(term, stypeof(tty), sizeof(term));
+	setenv("TERM", term, 0);
+	setenv("USER", pwd->pw_name, 1);
+	setenv("PATH", ":/usr/ucb:/bin:/usr/bin", 0);
+
 	if ((namep = rindex(pwd->pw_shell, '/')) == NULL)
 		namep = pwd->pw_shell;
 	else
 		namep++;
 	strcat(minusnam, namep);
-	alarm(0);
-	umask(022);
-	if (ttyn[sizeof("/dev/tty")-1] == 'd')
-		logerr("DIALUP %s %s\n", ttyn+sizeof("/dev/")-1, pwd->pw_name);
+	if (tty[sizeof("tty")-1] == 'd')
+		syslog(LOG_INFO, "DIALUP %s, %s", tty, pwd->pw_name);
+	if (pwd->pw_uid == 0)
+		if (utmp.ut_host[0])
+			syslog(LOG_NOTICE, "ROOT LOGIN %s FROM %.*s",
+			    tty, HMAX, utmp.ut_host);
+		else
+			syslog(LOG_NOTICE, "ROOT LOGIN %s", tty);
 	if (!quietlog) {
+		struct stat st;
+
 		showmotd();
 		strcat(maildir, pwd->pw_name);
-		if (access(maildir,4)==0) {
-			struct stat statb;
-			stat(maildir, &statb);
-			if (statb.st_size)
-				printf("You have mail.\n");
-		}
+		if (stat(maildir, &st) == 0 && st.st_size != 0)
+			printf("You have %smail.\n",
+				(st.st_mtime > st.st_atime) ? "new " : "");
 	}
-	
+	signal(SIGALRM, SIG_DFL);
 	signal(SIGQUIT, SIG_DFL);
 	signal(SIGINT, SIG_DFL);
 	signal(SIGTSTP, SIG_IGN);
@@ -359,6 +416,37 @@ normal:
 	exit(0);
 }
 
+getloginname(up)
+	register struct utmp *up;
+{
+	register char *namep;
+	char c;
+
+	while (up->ut_name[0] == '\0') {
+		namep = up->ut_name;
+		printf("login: ");
+		while ((c = getchar()) != '\n') {
+			if (c == ' ')
+				c = '_';
+			if (c == EOF)
+				exit(0);
+			if (namep < up->ut_name+NMAX)
+				*namep++ = c;
+		}
+	}
+	strncpy(lusername, up->ut_name, NMAX);
+	lusername[NMAX] = 0;
+	if ((pwd = getpwnam(lusername)) == NULL)
+		pwd = &nouser;
+}
+
+timedout()
+{
+
+	printf("Login timed out after %d seconds\n", timeout);
+	exit(0);
+}
+
 int	stopmotd;
 catch()
 {
@@ -370,20 +458,13 @@ catch()
 rootterm(tty)
 	char *tty;
 {
-	register FILE *fd;
-	char buf[100];
-
-	if ((fd = fopen(securetty, "r")) == NULL)
-		return(1);
-	while (fgets(buf, sizeof buf, fd) != NULL) {
-		buf[strlen(buf)-1] = '\0';
-		if (strcmp(tty, buf) == 0) {
-			fclose(fd);
-			return(1);
-		}
+	register struct ttyent *t;
+
+	if ((t = getttynam(tty)) != NULL) {
+		if (t->ty_status & TTY_SECURE)
+			return (1);
 	}
-	fclose(fd);
-	return(0);
+	return (0);
 }
 
 showmotd()
@@ -392,7 +473,7 @@ showmotd()
 	register c;
 
 	signal(SIGINT, catch);
-	if ((mf = fopen("/etc/motd","r")) != NULL) {
+	if ((mf = fopen("/etc/motd", "r")) != NULL) {
 		while ((c = getc(mf)) != EOF && stopmotd == 0)
 			putchar(c);
 		fclose(mf);
@@ -405,42 +486,31 @@ showmotd()
 
 char *
 stypeof(ttyid)
-char	*ttyid;
+	char *ttyid;
 {
-	static char	typebuf[16];
-	char		buf[50];
-	register FILE	*f;
-	register char	*p, *t, *q;
+	register struct ttyent *t;
 
-	if (ttyid == NULL)
-		return (UNKNOWN);
-	f = fopen("/etc/ttytype", "r");
-	if (f == NULL)
+	if (ttyid == NULL || (t = getttynam(ttyid)) == NULL)
 		return (UNKNOWN);
-	/* split off end of name */
-	for (p = q = ttyid; *p != 0; p++)
-		if (*p == '/')
-			q = p + 1;
-
-	/* scan the file */
-	while (fgets(buf, sizeof buf, f) != NULL)
-	{
-		for (t=buf; *t!=' ' && *t != '\t'; t++)
-			;
-		*t++ = 0;
-		while (*t == ' ' || *t == '\t')
-			t++;
-		for (p=t; *p>' '; p++)
-			;
-		*p = 0;
-		if (strcmp(q,t)==0) {
-			strcpy(typebuf, buf);
-			fclose(f);
-			return (typebuf);
-		}
+	return (t->ty_type);
+}
+
+doremotelogin(host)
+	char *host;
+{
+	getstr(rusername, sizeof (rusername), "remuser");
+	getstr(lusername, sizeof (lusername), "locuser");
+	getstr(term, sizeof(term), "Terminal type");
+	if (getuid()) {
+		pwd = &nouser;
+		return(-1);
+	}
+	pwd = getpwnam(lusername);
+	if (pwd == NULL) {
+		pwd = &nouser;
+		return(-1);
 	}
-	fclose (f);
-	return (UNKNOWN);
+	return(ruserok(host, (pwd->pw_uid == 0), rusername, lusername));
 }
 
 getstr(buf, cnt, err)
@@ -461,8 +531,44 @@ getstr(buf, cnt, err)
 	} while (c != 0);
 }
 
-logerr(fmt, a1, a2, a3)
-	char *fmt, *a1, *a2, *a3;
+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(term, tp)
+	char *term;
+	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;
+}
+
+tty_gid(default_gid)
+	int default_gid;
 {
+	struct group *getgrnam(), *gr;
+	int gid = default_gid;
+
+	gr = getgrnam(TTYGRPNAME);
+	if (gr != (struct group *) 0)
+		gid = gr->gr_gid;
+
+	endgrent();
 
+	return (gid);
 }