X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/blobdiff_plain/86eb6c9e58e5b76a08c21d862ff0324de087bb4f..297a7defe6590fca5cfbd5dbdd1bc993473f1eec:/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 2af2d2f393..dd7b33f215 100644
--- a/usr/src/usr.bin/login/login.c.1
+++ b/usr/src/usr.bin/login/login.c.1
@@ -1,4 +1,4 @@
-static	char *sccsid = "@(#)login.c.1	4.12 (Berkeley) 4.12";
+static	char *sccsid = "@(#)login.c.1	4.20 82/12/21";
 /*
  * login [ name ]
  * login -r
@@ -12,15 +12,11 @@ static	char *sccsid = "@(#)login.c.1	4.12 (Berkeley) 4.12";
 #include <stdio.h>
 #include <sys/stat.h>
 #include <lastlog.h>
-#include <whoami.h>
-#ifdef	UNAME
-#include <sys/utsname.h>
-#endif
 
 #define	SCPYN(a, b)	strncpy(a, b, sizeof(a))
 
-#define NMAX sizeof(utmp.ut_name)
-#define LMAX sizeof(utmp.ut_line)
+#define NMAX	sizeof(utmp.ut_name)
+#define LMAX	sizeof(utmp.ut_line)
 
 #define	FALSE	0
 #define	TRUE	-1
@@ -30,7 +26,7 @@ char	qlog[]  =	".hushlogin";
 char	securetty[] =	"/etc/securetty";
 char	maildir[30] =	"/usr/spool/mail/";
 char	lastlog[] =	"/usr/adm/lastlog";
-struct	passwd nouser = {"", "nope"};
+struct	passwd nouser = {"", "nope", -1, -1, -1, "", "", "", "" };
 struct	sgttyb ttyb;
 struct	utmp utmp;
 char	minusnam[16] = "-";
@@ -58,27 +54,17 @@ char	*rindex();
 char	*stypeof();
 extern	char **environ;
 
-#define	CTRL(c)	('c'&037)
-#define	CERASE	'#'
-#define	CEOT	CTRL(d)
-#define	CKILL	'@'
-#define	CQUIT	034		/* FS, cntl shift L */
-#define	CINTR	0177		/* DEL */
-#define	CSTOP	CTRL(s)
-#define	CSTART	CTRL(q)
-#define	CBRK	0377
-struct	tchars tc = {
-	CINTR, CQUIT, CSTART, CSTOP, CEOT, CBRK
+struct	ttychars tc = {
+	CERASE,	CKILL,	CINTR,	CQUIT,	CSTART,
+	CSTOP,	CEOF,	CBRK,	CSUSP,	CDSUSP,
+	CRPRNT,	CFLUSH,	CWERASE,CLNEXT
 };
-#ifdef	TIOCLSET
-struct	ltchars ltc = {
-	CTRL(z), CTRL(y), CTRL(r), CTRL(o), CTRL(w), CTRL(v)
-};
-#endif
 
 int	rflag;
-char	rusername[NMAX+1];
+char	rusername[NMAX+1], lusername[NMAX+1];
 char	rpassword[NMAX+1];
+char	name[NMAX+1];
+char	*rhost;
 
 main(argc, argv)
 char **argv;
@@ -90,11 +76,8 @@ char **argv;
 	int i;
 	FILE *nlfd;
 	char *ttyn;
-	int ldisc = 0;
-	int zero = 0;
-#ifdef	UNAME
-	struct utsname uts;
-#endif
+	int ldisc = 0, zero = 0;
+	FILE *hostf; int first = 1;
 
 	alarm(60);
 	signal(SIGQUIT, SIG_IGN);
@@ -102,17 +85,59 @@ char **argv;
 	nice(-100);
 	nice(20);
 	nice(0);
-	if (argc > 0 && !strcmp(argv[1], "-r")) {
+	if (argc > 1 && !strcmp(argv[1], "-r")) {
 		rflag++;
-		getstr(rusername, sizeof (rusername), "Username");
-		getstr(rpassword, sizeof (rpassword), "Password");
+		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) {
+			if (strcmp(rusername, lusername))
+				printf("%s: No such user\r\n", lusername);
+			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 (index(ahost, '\n'))
+				*index(ahost, '\n') = 0;
+			user = index(ahost, ' ');
+			if (user)
+				*user++ = 0;
+			if (!strcmp(rhost, ahost) &&
+			    !strcmp(rusername, user ? user : lusername)) {
+				fclose(hostf);
+				goto normal;
+			}
+		  }
+		  fclose(hostf);
+		}
+		if (first == 1) {
+			first = 0;
+			if (chdir(pwd->pw_dir) < 0)
+				goto again;
+			hostf = fopen(".rhosts", "r");
+			goto again;
+		}
+abnormal:
+		rhost = 0;
+		rflag = -1;
 	}
-#ifdef	TIOCLSET
-	ioctl(0, TIOCLSET, &zero);
-#endif
+normal:
+	ioctl(0, TIOCLSET, &zero);	/* XXX */
 	ioctl(0, TIOCNXCL, 0);
-	gtty(0, &ttyb);
+	ioctl(0, FIONBIO, &zero);
+	ioctl(0, FIOASYNC, &zero);
+	ioctl(0, TIOCGETP, &ttyb);	/* XXX */
 	if (rflag) {
 		char *cp = index(term, '/');
 		if (cp) {
@@ -126,13 +151,8 @@ char **argv;
 		}
 		ttyb.sg_flags = ECHO|CRMOD|ANYP|XTABS;
 	}
-	ttyb.sg_erase = CERASE;
-	ttyb.sg_kill = CKILL;
-	stty(0, &ttyb);
-	ioctl(0, TIOCSETC, &tc);
-#ifdef	TIOCLSET
-	ioctl(0, TIOCSLTC, &ltc);
-#endif
+	ioctl(0, TIOCSETP, &ttyb);	/* XXX */
+	ioctl(0, TIOCCSET, &tc);
 	for (t=3; t<20; t++)
 		close(t);
 	ttyn = ttyname(0);
@@ -147,40 +167,48 @@ char **argv;
 			SCPYN(utmp.ut_name, argv[1]);
 			argc = 0;
 		}
-		if (rflag)
-			strcpy(utmp.ut_name, rusername);
-		else
-		while (utmp.ut_name[0] == '\0') {
-			namep = utmp.ut_name;
-			printf("%s login: ", sysname);
-			while ((c = getchar()) != '\n') {
-				if (c == ' ')
-					c = '_';
-				if (c == EOF)
-					exit(0);
-				if (namep < utmp.ut_name+NMAX)
-					*namep++ = c;
+		if (rflag) {
+			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;
+				}
 			}
+		if (rhost == 0) {
+			setpwent();
+			if ((pwd = getpwnam(utmp.ut_name)) == NULL)
+				pwd = &nouser;
+			endpwent();
 		}
-		setpwent();
-		if ((pwd = getpwnam(utmp.ut_name)) == NULL)
-			pwd = &nouser;
-		endpwent();
 		if (!strcmp(pwd->pw_shell, "/bin/csh")) {
 			ldisc = NTTYDISC;
 			ioctl(0, TIOCSETD, &ldisc);
 		}
-		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 (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 (pwd->pw_uid != 0 && (nlfd = fopen(nolog, "r")) > 0) {
 			/* logins are disabled except for root */
@@ -192,26 +220,15 @@ char **argv;
 		}
 		if (!invalid && pwd->pw_uid == 0 &&
 		    !rootterm(ttyn+sizeof("/dev/")-1)) {
-			FILE *console = fopen("/dev/console", "w");
-			if (console != NULL) {
-				fprintf(console, "\r\nROOT LOGIN REFUSED %s\r\n"
-				    , ttyn+sizeof("/dev/")-1
-				);
-				fclose(console);
-			}
+			logerr("ROOT LOGIN REFUSED %s",
+			    ttyn+sizeof("/dev/")-1);
 			invalid = TRUE;
 		}
 		if (invalid) {
 			printf("Login incorrect\n");
-			if (ttyn[sizeof("/dev/tty")-1] == 'd') {
-				FILE *console = fopen("/dev/console", "w");
-				if (console != NULL) {
-					fprintf(console, "\r\nBADDIALUP %s %s\r\n"
-					    , ttyn+sizeof("/dev/")-1
-					    , utmp.ut_name);
-					fclose(console);
-				}
-			}
+			if (ttyn[sizeof("/dev/tty")-1] == 'd')
+				logerr("BADDIALUP %s %s\n",
+				    ttyn+sizeof("/dev/")-1, utmp.ut_name);
 		}
 		if (*pwd->pw_shell == '\0')
 			pwd->pw_shell = "/bin/sh";
@@ -243,15 +260,16 @@ char **argv;
 		write(f, (char *)&utmp, sizeof(utmp));
 		close(f);
 	}
-	quietlog = FALSE;
+	quietlog = 0;
 	if (access(qlog, 0) == 0)
-		quietlog = TRUE;
-	if ( !quietlog && (f = open(lastlog, 2)) >= 0 ) {
+		quietlog = 1;
+	if ((f = open(lastlog, 2)) >= 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)
@@ -266,12 +284,16 @@ char **argv;
 		close(f);
 	}
 	chown(ttyn, pwd->pw_uid, pwd->pw_gid);
+	chmod(ttyn, 0622);
 	setgid(pwd->pw_gid);
+	strncpy(name, utmp.ut_name, NMAX);
+	name[NMAX] = '\0';
+	initgroups(name, pwd->pw_gid);
 	setuid(pwd->pw_uid);
 	environ = envinit;
 	strncat(homedir, pwd->pw_dir, sizeof(homedir)-6);
 	strncat(shell, pwd->pw_shell, sizeof(shell)-7);
-	if (rflag == 0)
+	if (term[strlen("TERM=")] == 0)
 		strncat(term, stypeof(ttyn), sizeof(term)-6);
 	strncat(user, pwd->pw_name, sizeof(user)-6);
 	if ((namep = rindex(pwd->pw_shell, '/')) == NULL)
@@ -280,23 +302,10 @@ char **argv;
 		namep++;
 	strcat(minusnam, namep);
 	alarm(0);
-#ifdef ARPAVAX
-	if (pwd->pw_gid == 27)			/* UGLY ! */
-		umask(2);
-	else
-#endif
-		umask(022);
-	if (ttyn[sizeof("/dev/tty")-1] == 'd') {
-		FILE *console = fopen("/dev/console", "w");
-		if (console != NULL) {
-			fprintf(console, "\r\nDIALUP %s %s\r\n"
-			    , ttyn+sizeof("/dev/")-1
-			    , pwd->pw_name
-			);
-			fclose(console);
-		}
-	}
-	if ( !quietlog ) {
+	umask(022);
+	if (ttyn[sizeof("/dev/tty")-1] == 'd')
+		logerr("DIALUP %s %s\n", ttyn+sizeof("/dev/")-1, pwd->pw_name);
+	if (!quietlog) {
 		showmotd();
 		strcat(maildir, pwd->pw_name);
 		if (access(maildir,4)==0) {
@@ -319,19 +328,19 @@ char **argv;
 int	stopmotd;
 catch()
 {
+
 	signal(SIGINT, SIG_IGN);
 	stopmotd++;
 }
 
-/*
- * return true if OK for root to login on this terminal
- */
 rootterm(tty)
-	char	*tty;
+	char *tty;
 {
 	register FILE *fd;
-	char	buf[100];
+	char buf[100];
 
+	if (rflag)
+		return(1);
 	if ((fd = fopen(securetty, "r")) == NULL)
 		return(1);
 	while (fgets(buf, sizeof buf, fd) != NULL) {
@@ -419,3 +428,9 @@ getstr(buf, cnt, err)
 		*buf++ = c;
 	} while (c != 0);
 }
+
+logerr(fmt, a1, a2, a3)
+	char *fmt, *a1, *a2, *a3;
+{
+
+}