[unix-history] / usr / src / usr.bin / rlogin / rlogin.c

#ifndef lint
static char sccsid[] = "@(#)rlogin.c	4.15 (Berkeley) 83/07/02";
#endif

/*
 * rlogin - remote login
 */
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/wait.h>

#include <netinet/in.h>

#include <stdio.h>
#include <sgtty.h>
#include <errno.h>
#include <pwd.h>
#include <signal.h>
#include <netdb.h>

char	*index(), *rindex(), *malloc(), *getenv();
struct	passwd *getpwuid();
char	*name;
int	rem;
char	cmdchar = '~';
int	eight;
char	*speeds[] =
    { "0", "50", "75", "110", "134", "150", "200", "300",
      "600", "1200", "1800", "2400", "4800", "9600", "19200", "38400" };
char	term[64] = "network";
extern	int errno;
int	lostpeer();

main(argc, argv)
	int argc;
	char **argv;
{
	char *host, *cp;
	struct sgttyb ttyb;
	struct passwd *pwd;
	struct servent *sp;
	int uid, options = 0;

	host = rindex(argv[0], '/');
	if (host)
		host++;
	else
		host = argv[0];
	argv++, --argc;
	if (!strcmp(host, "rlogin"))
		host = *argv++, --argc;
another:
	if (argc > 0 && !strcmp(*argv, "-d")) {
		argv++, argc--;
		options |= SO_DEBUG;
		goto another;
	}
	if (argc > 0 && !strcmp(*argv, "-l")) {
		argv++, argc--;
		if (argc == 0)
			goto usage;
		name = *argv++; argc--;
		goto another;
	}
	if (argc > 0 && !strncmp(*argv, "-e", 2)) {
		cmdchar = argv[0][2];
		argv++, argc--;
		goto another;
	}
	if (argc > 0 && !strcmp(*argv, "-8")) {
		eight = 1;
		argv++, argc--;
		goto another;
	}
	if (host == 0)
		goto usage;
	if (argc > 0)
		goto usage;
	pwd = getpwuid(getuid());
	if (pwd == 0) {
		fprintf(stderr, "Who are you?\n");
		exit(1);
	}
	sp = getservbyname("login", "tcp");
	if (sp == 0) {
		fprintf(stderr, "rlogin: login/tcp: unknown service\n");
		exit(2);
	}
	cp = getenv("TERM");
	if (cp)
		strcpy(term, cp);
	if (ioctl(0, TIOCGETP, &ttyb)==0) {
		strcat(term, "/");
		strcat(term, speeds[ttyb.sg_ospeed]);
	}
	signal(SIGPIPE, lostpeer);
        rem = rcmd(&host, sp->s_port, pwd->pw_name,
	    name ? name : pwd->pw_name, term, 0);
        if (rem < 0)
                exit(1);
	if (options & SO_DEBUG &&
	    setsockopt(rem, SOL_SOCKET, SO_DEBUG, 0, 0) < 0)
		perror("rlogin: setsockopt (SO_DEBUG)");
	uid = getuid();
	if (setuid(uid) < 0) {
		perror("rlogin: setuid");
		exit(1);
	}
	doit();
	/*NOTREACHED*/
usage:
	fprintf(stderr,
	    "usage: rlogin host [ -ex ] [ -l username ] [ -8 ]\n");
	exit(1);
}

#define CRLF "\r\n"

int	child;
int	catchild();

int	defflags, tabflag;
char	deferase, defkill;
struct	tchars deftc;
struct	ltchars defltc;
struct	tchars notc =	{ -1, -1, -1, -1, -1, -1 };
struct	ltchars noltc =	{ -1, -1, -1, -1, -1, -1 };

doit()
{
	int exit();
	struct sgttyb sb;

	ioctl(0, TIOCGETP, (char *)&sb);
	defflags = sb.sg_flags;
	tabflag = defflags & TBDELAY;
	defflags &= ECHO | CRMOD;
	deferase = sb.sg_erase;
	defkill = sb.sg_kill;
	ioctl(0, TIOCGETC, (char *)&deftc);
	notc.t_startc = deftc.t_startc;
	notc.t_stopc = deftc.t_stopc;
	ioctl(0, TIOCGLTC, (char *)&defltc);
	signal(SIGINT, exit);
	signal(SIGHUP, exit);
	signal(SIGQUIT, exit);
	child = fork();
	if (child == -1) {
		perror("rlogin: fork");
		done();
	}
	signal(SIGINT, SIG_IGN);
	mode(1);
	if (child == 0) {
		reader();
		sleep(1);
		prf("\007Connection closed.");
		exit(3);
	}
	signal(SIGCHLD, catchild);
	writer();
	prf("Closed connection.");
	done();
}

done()
{

	mode(0);
	if (child > 0 && kill(child, SIGKILL) >= 0)
		wait((int *)0);
	exit(0);
}

catchild()
{
	union wait status;
	int pid;

again:
	pid = wait3(&status, WNOHANG|WUNTRACED, 0);
	if (pid == 0)
		return;
	/*
	 * if the child (reader) dies, just quit
	 */
	if (pid < 0 || pid == child && !WIFSTOPPED(status))
		done();
	goto again;
}

/*
 * writer: write to remote: 0 -> line.
 * ~.	terminate
 * ~^Z	suspend rlogin process.
 * ~^Y  suspend rlogin process, but leave reader alone.
 */
writer()
{
	char b[600], c;
	register char *p;
	register n;

top:
	p = b;
	for (;;) {
		int local;

		n = read(0, &c, 1);
		if (n == 0)
			break;
		if (n < 0)
			if (errno == EINTR)
				continue;
			else
				break;

		if (eight == 0)
			c &= 0177;
		/*
		 * If we're at the beginning of the line
		 * and recognize a command character, then
		 * we echo locally.  Otherwise, characters
		 * are echo'd remotely.  If the command
		 * character is doubled, this acts as a 
		 * force and local echo is suppressed.
		 */
		if (p == b)
			local = (c == cmdchar);
		if (p == b + 1 && *b == cmdchar)
			local = (c != cmdchar);
		if (!local) {
			if (write(rem, &c, 1) == 0) {
				prf("line gone");
				return;
			}
			if (eight == 0)
				c &= 0177;
		} else {
			if (c == '\r' || c == '\n') {
				char cmdc = b[1];

				if (cmdc == '.' || cmdc == deftc.t_eofc) {
					write(0, CRLF, sizeof(CRLF));
					return;
				}
				if (cmdc == defltc.t_suspc ||
				    cmdc == defltc.t_dsuspc) {
					write(0, CRLF, sizeof(CRLF));
					mode(0);
					signal(SIGCHLD, SIG_IGN);
					kill(cmdc == defltc.t_suspc ?
					  0 : getpid(), SIGTSTP);
					signal(SIGCHLD, catchild);
					mode(1);
					goto top;
				}
				*p++ = c;
				write(rem, b, p - b);
				goto top;
			}
			write(1, &c, 1);
		}
		*p++ = c;
		if (c == deferase) {
			p -= 2; 
			if (p < b)
				goto top;
		}
		if (c == defkill || c == deftc.t_eofc ||
		    c == '\r' || c == '\n')
			goto top;
		if (p >= &b[sizeof b])
			p--;
	}
}

oob()
{
	int out = 1+1, atmark;
	char waste[BUFSIZ], mark;

	ioctl(1, TIOCFLUSH, (char *)&out);
	for (;;) {
		if (ioctl(rem, SIOCATMARK, &atmark) < 0) {
			perror("ioctl");
			break;
		}
		if (atmark)
			break;
		(void) read(rem, waste, sizeof (waste));
	}
	recv(rem, &mark, 1, MSG_OOB);
	if (mark & TIOCPKT_NOSTOP) {
		notc.t_stopc = -1;
		notc.t_startc = -1;
		ioctl(0, TIOCSETC, (char *)&notc);
	}
	if (mark & TIOCPKT_DOSTOP) {
		notc.t_stopc = deftc.t_stopc;
		notc.t_startc = deftc.t_startc;
		ioctl(0, TIOCSETC, (char *)&notc);
	}
}

/*
 * reader: read from remote: line -> 1
 */
reader()
{
	char rb[BUFSIZ];
	register int cnt;

	signal(SIGURG, oob);
	{ int pid = -getpid();
	  ioctl(rem, SIOCSPGRP, (char *)&pid); }
	for (;;) {
		cnt = read(rem, rb, sizeof (rb));
		if (cnt == 0)
			break;
		if (cnt < 0) {
			if (errno == EINTR)
				continue;
			break;
		}
		write(1, rb, cnt);
	}
}

mode(f)
{
	struct tchars *tc;
	struct ltchars *ltc;
	struct sgttyb sb;

	ioctl(0, TIOCGETP, (char *)&sb);
	switch (f) {

	case 0:
		sb.sg_flags &= ~(CBREAK|RAW|TBDELAY);
		sb.sg_flags |= defflags|tabflag;
		tc = &deftc;
		ltc = &defltc;
		sb.sg_kill = defkill;
		sb.sg_erase = deferase;
		break;

	case 1:
		sb.sg_flags |= (eight ? RAW : CBREAK);
		sb.sg_flags &= ~defflags;
		/* preserve tab delays, but turn off XTABS */
		if ((sb.sg_flags & TBDELAY) == XTABS)
			sb.sg_flags &= ~TBDELAY;
		tc = &notc;
		ltc = &noltc;
		sb.sg_kill = sb.sg_erase = -1;
		break;

	default:
		return;
	}
	ioctl(0, TIOCSLTC, (char *)ltc);
	ioctl(0, TIOCSETC, (char *)tc);
	ioctl(0, TIOCSETN, (char *)&sb);
}

/*VARARGS*/
prf(f, a1, a2, a3)
	char *f;
{
	fprintf(stderr, f, a1, a2, a3);
	fprintf(stderr, CRLF);
}

lostpeer()
{
	signal(SIGPIPE, SIG_IGN);
	prf("\007Connection closed.");
	done();
}
Commit	Line	Data
5567b76f	1	#ifndef lint
840fc587	2	static char sccsid[] = "@(#)rlogin.c 4.15 (Berkeley) 83/07/02";
5567b76f BJ	3	#endif
5567b76f BJ	4
4ca10280 SL	5	/*
	6	* rlogin - remote login
	7	*/
5567b76f BJ	8	#include <sys/types.h>
5567b76f BJ	9	#include <sys/socket.h>
840fc587	10	#include <sys/wait.h>
86a16a64	11
c6c678f1	12	#include <netinet/in.h>
86a16a64 SL	13
	14	#include <stdio.h>
	15	#include <sgtty.h>
5567b76f BJ	16	#include <errno.h>
5567b76f BJ	17	#include <pwd.h>
86a16a64 SL	18	#include <signal.h>
86a16a64 SL	19	#include <netdb.h>
5567b76f	20
5567b76f BJ	21	char index(), rindex(), malloc(), getenv();
5567b76f BJ	22	struct passwd *getpwuid();
86a16a64	23	char *name;
5567b76f BJ	24	int rem;
5567b76f BJ	25	char cmdchar = '~';
5567b76f BJ	26	int eight;
	27	char *speeds[] =
	28	{ "0", "50", "75", "110", "134", "150", "200", "300",
	29	"600", "1200", "1800", "2400", "4800", "9600", "19200", "38400" };
86a16a64 SL	30	char term[64] = "network";
	31	extern int errno;
	32	int lostpeer();
	33
5567b76f BJ	34	main(argc, argv)
	35	int argc;
	36	char **argv;
	37	{
86a16a64	38	char host, cp;
5567b76f BJ	39	struct sgttyb ttyb;
5567b76f BJ	40	struct passwd *pwd;
86a16a64	41	struct servent *sp;
b5f23952	42	int uid, options = 0;
5567b76f BJ	43
	44	host = rindex(argv[0], '/');
	45	if (host)
	46	host++;
	47	else
	48	host = argv[0];
	49	argv++, --argc;
	50	if (!strcmp(host, "rlogin"))
	51	host = *argv++, --argc;
	52	another:
4659bf8e	53	if (argc > 0 && !strcmp(*argv, "-d")) {
5567b76f	54	argv++, argc--;
b5f23952	55	options \|= SO_DEBUG;
5567b76f BJ	56	goto another;
5567b76f BJ	57	}
4659bf8e	58	if (argc > 0 && !strcmp(*argv, "-l")) {
5567b76f BJ	59	argv++, argc--;
	60	if (argc == 0)
	61	goto usage;
	62	name = *argv++; argc--;
	63	goto another;
	64	}
4659bf8e	65	if (argc > 0 && !strncmp(*argv, "-e", 2)) {
5567b76f BJ	66	cmdchar = argv[0][2];
	67	argv++, argc--;
	68	goto another;
	69	}
4659bf8e	70	if (argc > 0 && !strcmp(*argv, "-8")) {
5567b76f BJ	71	eight = 1;
	72	argv++, argc--;
	73	goto another;
	74	}
	75	if (host == 0)
	76	goto usage;
	77	if (argc > 0)
	78	goto usage;
	79	pwd = getpwuid(getuid());
	80	if (pwd == 0) {
	81	fprintf(stderr, "Who are you?\n");
	82	exit(1);
	83	}
86a16a64 SL	84	sp = getservbyname("login", "tcp");
	85	if (sp == 0) {
	86	fprintf(stderr, "rlogin: login/tcp: unknown service\n");
	87	exit(2);
	88	}
f91500bc SL	89	cp = getenv("TERM");
	90	if (cp)
	91	strcpy(term, cp);
c64cdfb4	92	if (ioctl(0, TIOCGETP, &ttyb)==0) {
5567b76f BJ	93	strcat(term, "/");
	94	strcat(term, speeds[ttyb.sg_ospeed]);
	95	}
4ca10280	96	signal(SIGPIPE, lostpeer);
86a16a64	97	rem = rcmd(&host, sp->s_port, pwd->pw_name,
5567b76f BJ	98	name ? name : pwd->pw_name, term, 0);
	99	if (rem < 0)
	100	exit(1);
b5f23952 SL	101	if (options & SO_DEBUG &&
	102	setsockopt(rem, SOL_SOCKET, SO_DEBUG, 0, 0) < 0)
	103	perror("rlogin: setsockopt (SO_DEBUG)");
86a16a64 SL	104	uid = getuid();
	105	if (setuid(uid) < 0) {
	106	perror("rlogin: setuid");
	107	exit(1);
	108	}
	109	doit();
	110	/NOTREACHED/
5567b76f BJ	111	usage:
5567b76f BJ	112	fprintf(stderr,
c887373b	113	"usage: rlogin host [ -ex ] [ -l username ] [ -8 ]\n");
5567b76f BJ	114	exit(1);
	115	}
	116
5567b76f	117	#define CRLF "\r\n"
5567b76f	118
86a16a64	119	int child;
33953861	120	int catchild();
5567b76f	121
9da647e3 SL	122	int defflags, tabflag;
	123	char deferase, defkill;
	124	struct tchars deftc;
	125	struct ltchars defltc;
	126	struct tchars notc = { -1, -1, -1, -1, -1, -1 };
	127	struct ltchars noltc = { -1, -1, -1, -1, -1, -1 };
86a16a64 SL	128
86a16a64 SL	129	doit()
5567b76f	130	{
5567b76f	131	int exit();
9da647e3	132	struct sgttyb sb;
5567b76f	133
9da647e3 SL	134	ioctl(0, TIOCGETP, (char *)&sb);
9da647e3 SL	135	defflags = sb.sg_flags;
c887373b	136	tabflag = defflags & TBDELAY;
c64cdfb4	137	defflags &= ECHO \| CRMOD;
9da647e3 SL	138	deferase = sb.sg_erase;
	139	defkill = sb.sg_kill;
	140	ioctl(0, TIOCGETC, (char *)&deftc);
	141	notc.t_startc = deftc.t_startc;
	142	notc.t_stopc = deftc.t_stopc;
	143	ioctl(0, TIOCGLTC, (char *)&defltc);
4ca10280 SL	144	signal(SIGINT, exit);
	145	signal(SIGHUP, exit);
	146	signal(SIGQUIT, exit);
86a16a64 SL	147	child = fork();
	148	if (child == -1) {
	149	perror("rlogin: fork");
	150	done();
	151	}
4ca10280	152	signal(SIGINT, SIG_IGN);
33953861	153	mode(1);
86a16a64	154	if (child == 0) {
86a16a64	155	reader();
c887373b SL	156	sleep(1);
c887373b SL	157	prf("\007Connection closed.");
5567b76f BJ	158	exit(3);
5567b76f BJ	159	}
4ca10280	160	signal(SIGCHLD, catchild);
86a16a64	161	writer();
c887373b	162	prf("Closed connection.");
5567b76f BJ	163	done();
	164	}
	165
	166	done()
	167	{
	168
	169	mode(0);
86a16a64 SL	170	if (child > 0 && kill(child, SIGKILL) >= 0)
86a16a64 SL	171	wait((int *)0);
5567b76f BJ	172	exit(0);
	173	}
	174
33953861 EW	175	catchild()
	176	{
	177	union wait status;
	178	int pid;
	179
	180	again:
	181	pid = wait3(&status, WNOHANG\|WUNTRACED, 0);
	182	if (pid == 0)
	183	return;
	184	/*
	185	* if the child (reader) dies, just quit
	186	*/
	187	if (pid < 0 \|\| pid == child && !WIFSTOPPED(status))
	188	done();
	189	goto again;
	190	}
	191
5567b76f	192	/*
86a16a64 SL	193	* writer: write to remote: 0 -> line.
	194	* ~. terminate
	195	* ~^Z suspend rlogin process.
b5f23952	196	* ~^Y suspend rlogin process, but leave reader alone.
5567b76f	197	*/
86a16a64	198	writer()
5567b76f	199	{
86a16a64 SL	200	char b[600], c;
86a16a64 SL	201	register char *p;
33953861	202	register n;
5567b76f	203
86a16a64 SL	204	top:
86a16a64 SL	205	p = b;
33953861	206	for (;;) {
86a16a64	207	int local;
5567b76f	208
33953861 EW	209	n = read(0, &c, 1);
	210	if (n == 0)
	211	break;
	212	if (n < 0)
	213	if (errno == EINTR)
	214	continue;
	215	else
	216	break;
	217
86a16a64 SL	218	if (eight == 0)
	219	c &= 0177;
	220	/*
	221	* If we're at the beginning of the line
	222	* and recognize a command character, then
	223	* we echo locally. Otherwise, characters
	224	* are echo'd remotely. If the command
	225	* character is doubled, this acts as a
	226	* force and local echo is suppressed.
	227	*/
	228	if (p == b)
	229	local = (c == cmdchar);
	230	if (p == b + 1 && *b == cmdchar)
	231	local = (c != cmdchar);
	232	if (!local) {
	233	if (write(rem, &c, 1) == 0) {
	234	prf("line gone");
	235	return;
	236	}
	237	if (eight == 0)
	238	c &= 0177;
	239	} else {
86a16a64	240	if (c == '\r' \|\| c == '\n') {
c64cdfb4	241	char cmdc = b[1];
86a16a64	242
9da647e3	243	if (cmdc == '.' \|\| cmdc == deftc.t_eofc) {
86a16a64 SL	244	write(0, CRLF, sizeof(CRLF));
86a16a64 SL	245	return;
c64cdfb4	246	}
9da647e3 SL	247	if (cmdc == defltc.t_suspc \|\|
9da647e3 SL	248	cmdc == defltc.t_dsuspc) {
86a16a64 SL	249	write(0, CRLF, sizeof(CRLF));
86a16a64 SL	250	mode(0);
4ca10280	251	signal(SIGCHLD, SIG_IGN);
9da647e3	252	kill(cmdc == defltc.t_suspc ?
c64cdfb4	253	0 : getpid(), SIGTSTP);
4ca10280	254	signal(SIGCHLD, catchild);
86a16a64 SL	255	mode(1);
86a16a64 SL	256	goto top;
5567b76f	257	}
86a16a64 SL	258	*p++ = c;
	259	write(rem, b, p - b);
	260	goto top;
5567b76f	261	}
86a16a64	262	write(1, &c, 1);
5567b76f	263	}
86a16a64	264	*p++ = c;
9da647e3	265	if (c == deferase) {
86a16a64 SL	266	p -= 2;
	267	if (p < b)
	268	goto top;
5567b76f	269	}
9da647e3	270	if (c == defkill \|\| c == deftc.t_eofc \|\|
86a16a64 SL	271	c == '\r' \|\| c == '\n')
86a16a64 SL	272	goto top;
33953861 EW	273	if (p >= &b[sizeof b])
33953861 EW	274	p--;
5567b76f	275	}
5567b76f BJ	276	}
5567b76f BJ	277
5567b76f BJ	278	oob()
5567b76f BJ	279	{
4659bf8e	280	int out = 1+1, atmark;
86a16a64	281	char waste[BUFSIZ], mark;
5567b76f	282
86a16a64	283	ioctl(1, TIOCFLUSH, (char *)&out);
5567b76f	284	for (;;) {
4659bf8e	285	if (ioctl(rem, SIOCATMARK, &atmark) < 0) {
5567b76f BJ	286	perror("ioctl");
	287	break;
	288	}
4659bf8e	289	if (atmark)
5567b76f	290	break;
86a16a64	291	(void) read(rem, waste, sizeof (waste));
5567b76f	292	}
4ca10280	293	recv(rem, &mark, 1, MSG_OOB);
5567b76f	294	if (mark & TIOCPKT_NOSTOP) {
9da647e3 SL	295	notc.t_stopc = -1;
	296	notc.t_startc = -1;
	297	ioctl(0, TIOCSETC, (char *)&notc);
5567b76f BJ	298	}
5567b76f BJ	299	if (mark & TIOCPKT_DOSTOP) {
9da647e3 SL	300	notc.t_stopc = deftc.t_stopc;
	301	notc.t_startc = deftc.t_startc;
	302	ioctl(0, TIOCSETC, (char *)&notc);
5567b76f BJ	303	}
	304	}
	305
86a16a64 SL	306	/*
	307	* reader: read from remote: line -> 1
	308	*/
	309	reader()
5567b76f	310	{
86a16a64 SL	311	char rb[BUFSIZ];
86a16a64 SL	312	register int cnt;
5567b76f	313
4ca10280	314	signal(SIGURG, oob);
5567b76f	315	{ int pid = -getpid();
86a16a64	316	ioctl(rem, SIOCSPGRP, (char *)&pid); }
5567b76f	317	for (;;) {
86a16a64	318	cnt = read(rem, rb, sizeof (rb));
3a21fb62 SL	319	if (cnt == 0)
	320	break;
	321	if (cnt < 0) {
86a16a64	322	if (errno == EINTR)
5567b76f	323	continue;
5567b76f BJ	324	break;
5567b76f BJ	325	}
86a16a64	326	write(1, rb, cnt);
5567b76f BJ	327	}
	328	}
	329
5567b76f BJ	330	mode(f)
5567b76f BJ	331	{
9da647e3 SL	332	struct tchars *tc;
	333	struct ltchars *ltc;
	334	struct sgttyb sb;
86a16a64	335
9da647e3	336	ioctl(0, TIOCGETP, (char *)&sb);
c64cdfb4 SL	337	switch (f) {
	338
	339	case 0:
9da647e3 SL	340	sb.sg_flags &= ~(CBREAK\|RAW\|TBDELAY);
9da647e3 SL	341	sb.sg_flags \|= defflags\|tabflag;
c64cdfb4	342	tc = &deftc;
9da647e3 SL	343	ltc = &defltc;
	344	sb.sg_kill = defkill;
	345	sb.sg_erase = deferase;
c64cdfb4 SL	346	break;
	347
	348	case 1:
9da647e3 SL	349	sb.sg_flags \|= (eight ? RAW : CBREAK);
9da647e3 SL	350	sb.sg_flags &= ~defflags;
c887373b	351	/* preserve tab delays, but turn off XTABS */
9da647e3 SL	352	if ((sb.sg_flags & TBDELAY) == XTABS)
9da647e3 SL	353	sb.sg_flags &= ~TBDELAY;
c64cdfb4	354	tc = &notc;
9da647e3 SL	355	ltc = &noltc;
9da647e3 SL	356	sb.sg_kill = sb.sg_erase = -1;
c64cdfb4 SL	357	break;
	358
	359	default:
	360	return;
5567b76f	361	}
9da647e3 SL	362	ioctl(0, TIOCSLTC, (char *)ltc);
	363	ioctl(0, TIOCSETC, (char *)tc);
	364	ioctl(0, TIOCSETN, (char *)&sb);
5567b76f BJ	365	}
5567b76f BJ	366
86a16a64	367	/VARARGS/
5567b76f	368	prf(f, a1, a2, a3)
86a16a64	369	char *f;
5567b76f BJ	370	{
	371	fprintf(stderr, f, a1, a2, a3);
	372	fprintf(stderr, CRLF);
	373	}
	374
86a16a64	375	lostpeer()
5567b76f	376	{
4ca10280	377	signal(SIGPIPE, SIG_IGN);
c887373b	378	prf("\007Connection closed.");
86a16a64	379	done();
5567b76f	380	}