[unix-history] / usr / src / usr.bin / tip / cmds.c

/*
 * Copyright (c) 1983 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[] = "@(#)cmds.c	5.1 (Berkeley) %G%";
#endif not lint

#include "tip.h"
/*
 * tip
 *
 * miscellaneous commands
 */

int	quant[] = { 60, 60, 24 };

char	null = '\0';
char	*sep[] = { "second", "minute", "hour" };
static char *argv[10];		/* argument vector for take and put */

int	timeout();		/* timeout function called on alarm */
int	stopsnd();		/* SIGINT handler during file transfers */
int	intprompt();		/* used in handling SIG_INT during prompt */
int	intcopy();		/* interrupt routine for file transfers */

/*
 * FTP - remote ==> local
 *  get a file from the remote host
 */
getfl(c)
	char c;
{
	char buf[256], *cp, *expand();
	
	putchar(c);
	/*
	 * get the UNIX receiving file's name
	 */
	if (prompt("Local file name? ", copyname))
		return;
	cp = expand(copyname);
	if ((sfd = creat(cp, 0666)) < 0) {
		printf("\r\n%s: cannot creat\r\n", copyname);
		return;
	}
	
	/*
	 * collect parameters
	 */
	if (prompt("List command for remote system? ", buf)) {
		unlink(copyname);
		return;
	}
	transfer(buf, sfd, value(EOFREAD));
}

/*
 * Cu-like take command
 */
cu_take(cc)
	char cc;
{
	int fd, argc;
	char line[BUFSIZ], *expand(), *cp;

	if (prompt("[take] ", copyname))
		return;
	if ((argc = args(copyname, argv)) < 1 || argc > 2) {
		printf("usage: <take> from [to]\r\n");
		return;
	}
	if (argc == 1)
		argv[1] = argv[0];
	cp = expand(argv[1]);
	if ((fd = creat(cp, 0666)) < 0) {
		printf("\r\n%s: cannot create\r\n", argv[1]);
		return;
	}
	sprintf(line, "cat %s;echo \01", argv[0]);
	transfer(line, fd, "\01");
}

static	jmp_buf intbuf;
/*
 * Bulk transfer routine --
 *  used by getfl(), cu_take(), and pipefile()
 */
transfer(buf, fd, eofchars)
	char *buf, *eofchars;
{
	register int ct;
	char c, buffer[BUFSIZ];
	register char *p = buffer;
	register int cnt, eof;
	time_t start;
	int (*f)();

	pwrite(FD, buf, size(buf));
	quit = 0;
	kill(pid, SIGIOT);
	read(repdes[0], (char *)&ccc, 1);  /* Wait until read process stops */
	
	/*
	 * finish command
	 */
	pwrite(FD, "\r", 1);
	do
		read(FD, &c, 1); 
	while ((c&0177) != '\n');
	ioctl(0, TIOCSETC, &defchars);
	
	(void) setjmp(intbuf);
	f = signal(SIGINT, intcopy);
	start = time(0);
	for (ct = 0; !quit;) {
		eof = read(FD, &c, 1) <= 0;
		c &= 0177;
		if (quit)
			continue;
		if (eof || any(c, eofchars))
			break;
		if (c == 0)
			continue;	/* ignore nulls */
		if (c == '\r')
			continue;
		*p++ = c;

		if (c == '\n' && boolean(value(VERBOSE)))
			printf("\r%d", ++ct);
		if ((cnt = (p-buffer)) == number(value(FRAMESIZE))) {
			if (write(fd, buffer, cnt) != cnt) {
				printf("\r\nwrite error\r\n");
				quit = 1;
			}
			p = buffer;
		}
	}
	if (cnt = (p-buffer))
		if (write(fd, buffer, cnt) != cnt)
			printf("\r\nwrite error\r\n");

	if (boolean(value(VERBOSE)))
		prtime(" lines transferred in ", time(0)-start);
	ioctl(0, TIOCSETC, &tchars);
	write(fildes[1], (char *)&ccc, 1);
	signal(SIGINT, f);
	close(fd);
}

/*
 * FTP - remote ==> local process
 *   send remote input to local process via pipe
 */
pipefile()
{
	int cpid, pdes[2];
	char buf[256];
	int status, p;
	extern int errno;

	if (prompt("Local command? ", buf))
		return;

	if (pipe(pdes)) {
		printf("can't establish pipe\r\n");
		return;
	}

	if ((cpid = fork()) < 0) {
		printf("can't fork!\r\n");
		return;
	} else if (cpid) {
		if (prompt("List command for remote system? ", buf)) {
			close(pdes[0]), close(pdes[1]);
			kill (cpid, SIGKILL);
		} else {
			close(pdes[0]);
			signal(SIGPIPE, intcopy);
			transfer(buf, pdes[1], value(EOFREAD));
			signal(SIGPIPE, SIG_DFL);
			while ((p = wait(&status)) > 0 && p != cpid)
				;
		}
	} else {
		register int f;

		dup2(pdes[0], 0);
		close(pdes[0]);
		for (f = 3; f < 20; f++)
			close(f);
		execute(buf);
		printf("can't execl!\r\n");
		exit(0);
	}
}

/*
 * Interrupt service routine for FTP
 */
stopsnd()
{

	stop = 1;
	signal(SIGINT, SIG_IGN);
}

/*
 * FTP - local ==> remote
 *  send local file to remote host
 *  terminate transmission with pseudo EOF sequence
 */
sendfile(cc)
	char cc;
{
	FILE *fd;
	char *fnamex;
	char *expand();

	putchar(cc);
	/*
	 * get file name
	 */
	if (prompt("Local file name? ", fname))
		return;

	/*
	 * look up file
	 */
	fnamex = expand(fname);
	if ((fd = fopen(fnamex, "r")) == NULL) {
		printf("%s: cannot open\r\n", fname);
		return;
	}
	transmit(fd, value(EOFWRITE), NULL);
	if (!boolean(value(ECHOCHECK))) {
		struct sgttyb buf;

		ioctl(FD, TIOCGETP, &buf);	/* this does a */
		ioctl(FD, TIOCSETP, &buf);	/*   wflushtty */
	}
}

/*
 * Bulk transfer routine to remote host --
 *   used by sendfile() and cu_put()
 */
transmit(fd, eofchars, command)
	FILE *fd;
	char *eofchars, *command;
{
	char *pc, lastc;
	int c, ccount, lcount;
	time_t start_t, stop_t;
	int (*f)();

	kill(pid, SIGIOT);	/* put TIPOUT into a wait state */
	stop = 0;
	f = signal(SIGINT, stopsnd);
	ioctl(0, TIOCSETC, &defchars);
	read(repdes[0], (char *)&ccc, 1);
	if (command != NULL) {
		for (pc = command; *pc; pc++)
			send(*pc);
		if (boolean(value(ECHOCHECK)))
			read(FD, (char *)&c, 1);	/* trailing \n */
		else {
			struct sgttyb buf;

			ioctl(FD, TIOCGETP, &buf);	/* this does a */
			ioctl(FD, TIOCSETP, &buf);	/*   wflushtty */
			sleep(5); /* wait for remote stty to take effect */
		}
	}
	lcount = 0;
	lastc = '\0';
	start_t = time(0);
	while (1) {
		ccount = 0;
		do {
			c = getc(fd);
			if (stop)
				goto out;
			if (c == EOF)
				goto out;
			if (c == 0177 && !boolean(value(RAWFTP)))
				continue;
			lastc = c;
			if (c < 040) {
				if (c == '\n') {
					if (!boolean(value(RAWFTP)))
						c = '\r';
				}
				else if (c == '\t') {
					if (!boolean(value(RAWFTP))) {
						if (boolean(value(TABEXPAND))) {
							send(' ');
							while ((++ccount % 8) != 0)
								send(' ');
							continue;
						}
					}
				} else
					if (!boolean(value(RAWFTP)))
						continue;
			}
			send(c);
		} while (c != '\r' && !boolean(value(RAWFTP)));
		if (boolean(value(VERBOSE)))
			printf("\r%d", ++lcount);
		if (boolean(value(ECHOCHECK))) {
			timedout = 0;
			alarm(value(ETIMEOUT));
			do {	/* wait for prompt */
				read(FD, (char *)&c, 1);
				if (timedout || stop) {
					if (timedout)
						printf("\r\ntimed out at eol\r\n");
					alarm(0);
					goto out;
				}
			} while ((c&0177) != character(value(PROMPT)));
			alarm(0);
		}
	}
out:
	if (lastc != '\n' && !boolean(value(RAWFTP)))
		send('\r');
	for (pc = eofchars; *pc; pc++)
		send(*pc);
	stop_t = time(0);
	fclose(fd);
	signal(SIGINT, f);
	if (boolean(value(VERBOSE)))
		if (boolean(value(RAWFTP)))
			prtime(" chars transferred in ", stop_t-start_t);
		else
			prtime(" lines transferred in ", stop_t-start_t);
	write(fildes[1], (char *)&ccc, 1);
	ioctl(0, TIOCSETC, &tchars);
}

/*
 * Cu-like put command
 */
cu_put(cc)
	char cc;
{
	FILE *fd;
	char line[BUFSIZ];
	int argc;
	char *expand();
	char *copynamex;

	if (prompt("[put] ", copyname))
		return;
	if ((argc = args(copyname, argv)) < 1 || argc > 2) {
		printf("usage: <put> from [to]\r\n");
		return;
	}
	if (argc == 1)
		argv[1] = argv[0];
	copynamex = expand(argv[0]);
	if ((fd = fopen(copynamex, "r")) == NULL) {
		printf("%s: cannot open\r\n", copynamex);
		return;
	}
	if (boolean(value(ECHOCHECK)))
		sprintf(line, "cat>%s\r", argv[1]);
	else
		sprintf(line, "stty -echo;cat>%s;stty echo\r", argv[1]);
	transmit(fd, "\04", line);
}

/*
 * FTP - send single character
 *  wait for echo & handle timeout
 */
send(c)
	char c;
{
	char cc;
	int retry = 0;

	cc = c;
	pwrite(FD, &cc, 1);
#ifdef notdef
	if (number(value(CDELAY)) > 0 && c != '\r')
		nap(number(value(CDELAY)));
#endif
	if (!boolean(value(ECHOCHECK))) {
#ifdef notdef
		if (number(value(LDELAY)) > 0 && c == '\r')
			nap(number(value(LDELAY)));
#endif
		return;
	}
tryagain:
	timedout = 0;
	alarm(value(ETIMEOUT));
	read(FD, &cc, 1);
	alarm(0);
	if (timedout) {
		printf("\r\ntimeout error (%s)\r\n", ctrl(c));
		if (retry++ > 3)
			return;
		pwrite(FD, &null, 1); /* poke it */
		goto tryagain;
	}
}

timeout()
{
	signal(SIGALRM, timeout);
	timedout = 1;
}

#ifdef CONNECT
/*
 * Fork a program with:
 *  0 <-> local tty in
 *  1 <-> local tty out
 *  2 <-> local tty out
 *  3 <-> remote tty in
 *  4 <-> remote tty out
 */
consh(c)
{
	char buf[256];
	int cpid, status, p;
	time_t start;

	putchar(c);
	if (prompt("Local command? ", buf))
		return;
	kill(pid, SIGIOT);	/* put TIPOUT into a wait state */
	signal(SIGINT, SIG_IGN);
	signal(SIGQUIT, SIG_IGN);
	ioctl(0, TIOCSETC, &defchars);
	read(repdes[0], (char *)&ccc, 1);
	/*
	 * Set up file descriptors in the child and
	 *  let it go...
	 */
	if ((cpid = fork()) < 0)
		printf("can't fork!\r\n");
	else if (cpid) {
		start = time(0);
		while ((p = wait(&status)) > 0 && p != cpid)
			;
	} else {
		register int i;

		dup2(FD, 3);
		dup2(3, 4);
		for (i = 5; i < 20; i++)
			close(i);
		signal(SIGINT, SIG_DFL);
		signal(SIGQUIT, SIG_DFL);
		execute(buf);
		printf("can't find `%s'\r\n", buf);
		exit(0);
	}
	if (boolean(value(VERBOSE)))
		prtime("away for ", time(0)-start);
	write(fildes[1], (char *)&ccc, 1);
	ioctl(0, TIOCSETC, &tchars);
	signal(SIGINT, SIG_DFL);
	signal(SIGQUIT, SIG_DFL);
}
#endif

/*
 * Escape to local shell
 */
shell()
{
	int shpid, status;
	extern char **environ;
	char *cp;

	printf("[sh]\r\n");
	signal(SIGINT, SIG_IGN);
	signal(SIGQUIT, SIG_IGN);
	unraw();
	if (shpid = fork()) {
		while (shpid != wait(&status));
		raw();
		printf("\r\n!\r\n");
		signal(SIGINT, SIG_DFL);
		signal(SIGQUIT, SIG_DFL);
		return;
	} else {
		signal(SIGQUIT, SIG_DFL);
		signal(SIGINT, SIG_DFL);
		if ((cp = rindex(value(SHELL), '/')) == NULL)
			cp = value(SHELL);
		else
			cp++;
		execl(value(SHELL), cp, 0);
		printf("\r\ncan't execl!\r\n");
		exit(1);
	}
}

/*
 * TIPIN portion of scripting
 *   initiate the conversation with TIPOUT
 */
setscript()
{
	char c;
	/*
	 * enable TIPOUT side for dialogue
	 */
	kill(pid, SIGEMT);
	if (boolean(value(SCRIPT)))
		write(fildes[1], value(RECORD), size(value(RECORD)));
	write(fildes[1], "\n", 1);
	/*
	 * wait for TIPOUT to finish
	 */
	read(repdes[0], &c, 1);
	if (c == 'n')
		printf("can't create %s\r\n", value(RECORD));
}

/*
 * Change current working directory of
 *   local portion of tip
 */
chdirectory()
{
	char dirname[80];
	register char *cp = dirname;

	if (prompt("[cd] ", dirname)) {
		if (stoprompt)
			return;
		cp = value(HOME);
	}
	if (chdir(cp) < 0)
		printf("%s: bad directory\r\n", cp);
	printf("!\r\n");
}

abort(msg)
	char *msg;
{

	kill(pid, SIGTERM);
	disconnect(msg);
	if (msg != NOSTR)
		printf("\r\n%s", msg);
	printf("\r\n[EOT]\r\n");
	delock(uucplock);
	unraw();
	exit(0);
}

finish()
{
	char *dismsg;

	if ((dismsg = value(DISCONNECT)) != NOSTR) {
		write(FD, dismsg, strlen(dismsg));
		sleep(5);
	}
	abort(NOSTR);
}

intcopy()
{

	raw();
	quit = 1;
	longjmp(intbuf, 1);
}

execute(s)
	char *s;
{
	register char *cp;

	if ((cp = rindex(value(SHELL), '/')) == NULL)
		cp = value(SHELL);
	else
		cp++;
	execl(value(SHELL), cp, "-c", s, 0);
}

args(buf, a)
	char *buf, *a[];
{
	register char *p = buf, *start;
	register char **parg = a;
	register int n = 0;

	do {
		while (*p && (*p == ' ' || *p == '\t'))
			p++;
		start = p;
		if (*p)
			*parg = p;
		while (*p && (*p != ' ' && *p != '\t'))
			p++;
		if (p != start)
			parg++, n++;
		if (*p)
			*p++ = '\0';
	} while (*p);

	return(n);
}

prtime(s, a)
	char *s;
	time_t a;
{
	register i;
	int nums[3];

	for (i = 0; i < 3; i++) {
		nums[i] = (int)(a % quant[i]);
		a /= quant[i];
	}
	printf("%s", s);
	while (--i >= 0)
		if (nums[i] || i == 0 && nums[1] == 0 && nums[2] == 0)
			printf("%d %s%c ", nums[i], sep[i],
				nums[i] == 1 ? '\0' : 's');
	printf("\r\n!\r\n");
}

variable()
{
	char	buf[256];

	if (prompt("[set] ", buf))
		return;
	vlex(buf);
	if (vtable[BEAUTIFY].v_access&CHANGED) {
		vtable[BEAUTIFY].v_access &= ~CHANGED;
		kill(pid, SIGSYS);
	}
	if (vtable[SCRIPT].v_access&CHANGED) {
		vtable[SCRIPT].v_access &= ~CHANGED;
		setscript();
		/*
		 * So that "set record=blah script" doesn't
		 *  cause two transactions to occur.
		 */
		if (vtable[RECORD].v_access&CHANGED)
			vtable[RECORD].v_access &= ~CHANGED;
	}
	if (vtable[RECORD].v_access&CHANGED) {
		vtable[RECORD].v_access &= ~CHANGED;
		if (boolean(value(SCRIPT)))
			setscript();
	}
	if (vtable[TAND].v_access&CHANGED) {
		vtable[TAND].v_access &= ~CHANGED;
		if (boolean(value(TAND)))
			tandem("on");
		else
			tandem("off");
	}
 	if (vtable[LECHO].v_access&CHANGED) {
 		vtable[LECHO].v_access &= ~CHANGED;
 		HD = boolean(value(LECHO));
 	}
	if (vtable[PARITY].v_access&CHANGED) {
		vtable[PARITY].v_access &= ~CHANGED;
		setparity();
	}
}

/*
 * Turn tandem mode on or off for remote tty.
 */
tandem(option)
	char *option;
{
	struct sgttyb rmtty;

	ioctl(FD, TIOCGETP, &rmtty);
	if (strcmp(option,"on") == 0) {
		rmtty.sg_flags |= TANDEM;
		arg.sg_flags |= TANDEM;
	} else {
		rmtty.sg_flags &= ~TANDEM;
		arg.sg_flags &= ~TANDEM;
	}
	ioctl(FD, TIOCSETP, &rmtty);
	ioctl(0,  TIOCSETP, &arg);
}

/*
 * Send a break.
 */
genbrk()
{

	ioctl(FD, TIOCSBRK, NULL);
	sleep(1);
	ioctl(FD, TIOCCBRK, NULL);
}

/*
 * Suspend tip
 */
suspend()
{

	unraw();
	kill(0, SIGTSTP);
	raw();
}

/*
 *	expand a file name if it includes shell meta characters
 */

char *
expand(name)
	char name[];
{
	static char xname[BUFSIZ];
	char cmdbuf[BUFSIZ];
	register int pid, l, rc;
	register char *cp, *Shell;
	int s, pivec[2], (*sigint)();

	if (!anyof(name, "~{[*?$`'\"\\"))
		return(name);
	/* sigint = signal(SIGINT, SIG_IGN); */
	if (pipe(pivec) < 0) {
		perror("pipe");
		/* signal(SIGINT, sigint) */
		return(name);
	}
	sprintf(cmdbuf, "echo %s", name);
	if ((pid = vfork()) == 0) {
		Shell = value(SHELL);
		if (Shell == NOSTR)
			Shell = "/bin/sh";
		close(pivec[0]);
		close(1);
		dup(pivec[1]);
		close(pivec[1]);
		close(2);
		execl(Shell, Shell, "-c", cmdbuf, 0);
		_exit(1);
	}
	if (pid == -1) {
		perror("fork");
		close(pivec[0]);
		close(pivec[1]);
		return(NOSTR);
	}
	close(pivec[1]);
	l = read(pivec[0], xname, BUFSIZ);
	close(pivec[0]);
	while (wait(&s) != pid);
		;
	s &= 0377;
	if (s != 0 && s != SIGPIPE) {
		fprintf(stderr, "\"Echo\" failed\n");
		return(NOSTR);
	}
	if (l < 0) {
		perror("read");
		return(NOSTR);
	}
	if (l == 0) {
		fprintf(stderr, "\"%s\": No match\n", name);
		return(NOSTR);
	}
	if (l == BUFSIZ) {
		fprintf(stderr, "Buffer overflow expanding \"%s\"\n", name);
		return(NOSTR);
	}
	xname[l] = 0;
	for (cp = &xname[l-1]; *cp == '\n' && cp > xname; cp--)
		;
	*++cp = '\0';
	return(xname);
}

/*
 * Are any of the characters in the two strings the same?
 */

anyof(s1, s2)
	register char *s1, *s2;
{
	register int c;

	while (c = *s1++)
		if (any(c, s2))
			return(1);
	return(0);
}
Commit	Line	Data
051b1e55 DF	1	/*
	2	* Copyright (c) 1983 Regents of the University of California.
	3	* All rights reserved. The Berkeley software License Agreement
	4	* specifies the terms and conditions for redistribution.
	5	*/
	6
05862919	7	#ifndef lint
051b1e55 DF	8	static char sccsid[] = "@(#)cmds.c 5.1 (Berkeley) %G%";
051b1e55 DF	9	#endif not lint
05862919	10
22daf918 BJ	11	#include "tip.h"
	12	/*
	13	* tip
	14	*
	15	* miscellaneous commands
	16	*/
	17
	18	int quant[] = { 60, 60, 24 };
	19
	20	char null = '\0';
	21	char *sep[] = { "second", "minute", "hour" };
	22	static char argv[10]; / argument vector for take and put */
	23
	24	int timeout(); /* timeout function called on alarm */
	25	int stopsnd(); /* SIGINT handler during file transfers */
	26	int intprompt(); /* used in handling SIG_INT during prompt */
	27	int intcopy(); /* interrupt routine for file transfers */
	28
	29	/*
	30	* FTP - remote ==> local
	31	* get a file from the remote host
	32	*/
	33	getfl(c)
	34	char c;
	35	{
05862919	36	char buf[256], cp, expand();
22daf918 BJ	37
	38	putchar(c);
	39	/*
	40	* get the UNIX receiving file's name
	41	*/
	42	if (prompt("Local file name? ", copyname))
	43	return;
05862919 SL	44	cp = expand(copyname);
05862919 SL	45	if ((sfd = creat(cp, 0666)) < 0) {
22daf918 BJ	46	printf("\r\n%s: cannot creat\r\n", copyname);
	47	return;
	48	}
	49
	50	/*
	51	* collect parameters
	52	*/
	53	if (prompt("List command for remote system? ", buf)) {
	54	unlink(copyname);
	55	return;
	56	}
	57	transfer(buf, sfd, value(EOFREAD));
	58	}
	59
	60	/*
	61	* Cu-like take command
	62	*/
	63	cu_take(cc)
	64	char cc;
	65	{
	66	int fd, argc;
05862919	67	char line[BUFSIZ], expand(), cp;
22daf918 BJ	68
	69	if (prompt("[take] ", copyname))
	70	return;
	71	if ((argc = args(copyname, argv)) < 1 \|\| argc > 2) {
	72	printf("usage: <take> from [to]\r\n");
	73	return;
	74	}
	75	if (argc == 1)
	76	argv[1] = argv[0];
05862919 SL	77	cp = expand(argv[1]);
05862919 SL	78	if ((fd = creat(cp, 0666)) < 0) {
22daf918 BJ	79	printf("\r\n%s: cannot create\r\n", argv[1]);
	80	return;
	81	}
6b46907f	82	sprintf(line, "cat %s;echo \01", argv[0]);
22daf918 BJ	83	transfer(line, fd, "\01");
	84	}
	85
05862919	86	static jmp_buf intbuf;
22daf918 BJ	87	/*
	88	* Bulk transfer routine --
	89	* used by getfl(), cu_take(), and pipefile()
	90	*/
	91	transfer(buf, fd, eofchars)
	92	char buf, eofchars;
	93	{
	94	register int ct;
	95	char c, buffer[BUFSIZ];
	96	register char *p = buffer;
	97	register int cnt, eof;
	98	time_t start;
05862919	99	int (*f)();
22daf918	100
6b46907f	101	pwrite(FD, buf, size(buf));
22daf918	102	quit = 0;
22daf918 BJ	103	kill(pid, SIGIOT);
	104	read(repdes[0], (char )&ccc, 1); / Wait until read process stops */
	105
	106	/*
	107	* finish command
	108	*/
6b46907f	109	pwrite(FD, "\r", 1);
22daf918 BJ	110	do
	111	read(FD, &c, 1);
	112	while ((c&0177) != '\n');
	113	ioctl(0, TIOCSETC, &defchars);
	114
ab76a038	115	(void) setjmp(intbuf);
05862919	116	f = signal(SIGINT, intcopy);
22daf918 BJ	117	start = time(0);
	118	for (ct = 0; !quit;) {
	119	eof = read(FD, &c, 1) <= 0;
	120	c &= 0177;
	121	if (quit)
	122	continue;
	123	if (eof \|\| any(c, eofchars))
	124	break;
	125	if (c == 0)
	126	continue; /* ignore nulls */
	127	if (c == '\r')
	128	continue;
	129	*p++ = c;
	130
	131	if (c == '\n' && boolean(value(VERBOSE)))
	132	printf("\r%d", ++ct);
	133	if ((cnt = (p-buffer)) == number(value(FRAMESIZE))) {
	134	if (write(fd, buffer, cnt) != cnt) {
	135	printf("\r\nwrite error\r\n");
	136	quit = 1;
	137	}
	138	p = buffer;
	139	}
	140	}
	141	if (cnt = (p-buffer))
	142	if (write(fd, buffer, cnt) != cnt)
	143	printf("\r\nwrite error\r\n");
	144
	145	if (boolean(value(VERBOSE)))
	146	prtime(" lines transferred in ", time(0)-start);
	147	ioctl(0, TIOCSETC, &tchars);
	148	write(fildes[1], (char *)&ccc, 1);
ab76a038	149	signal(SIGINT, f);
22daf918 BJ	150	close(fd);
	151	}
	152
	153	/*
	154	* FTP - remote ==> local process
	155	* send remote input to local process via pipe
	156	*/
	157	pipefile()
	158	{
	159	int cpid, pdes[2];
	160	char buf[256];
	161	int status, p;
	162	extern int errno;
	163
	164	if (prompt("Local command? ", buf))
	165	return;
	166
	167	if (pipe(pdes)) {
	168	printf("can't establish pipe\r\n");
	169	return;
	170	}
	171
	172	if ((cpid = fork()) < 0) {
	173	printf("can't fork!\r\n");
	174	return;
	175	} else if (cpid) {
	176	if (prompt("List command for remote system? ", buf)) {
	177	close(pdes[0]), close(pdes[1]);
	178	kill (cpid, SIGKILL);
	179	} else {
	180	close(pdes[0]);
	181	signal(SIGPIPE, intcopy);
	182	transfer(buf, pdes[1], value(EOFREAD));
	183	signal(SIGPIPE, SIG_DFL);
	184	while ((p = wait(&status)) > 0 && p != cpid)
	185	;
	186	}
	187	} else {
	188	register int f;
	189
	190	dup2(pdes[0], 0);
	191	close(pdes[0]);
	192	for (f = 3; f < 20; f++)
	193	close(f);
	194	execute(buf);
	195	printf("can't execl!\r\n");
	196	exit(0);
	197	}
	198	}
	199
	200	/*
	201	* Interrupt service routine for FTP
	202	*/
	203	stopsnd()
	204	{
05862919	205
22daf918 BJ	206	stop = 1;
	207	signal(SIGINT, SIG_IGN);
	208	}
	209
	210	/*
	211	* FTP - local ==> remote
	212	* send local file to remote host
	213	* terminate transmission with pseudo EOF sequence
	214	*/
	215	sendfile(cc)
	216	char cc;
	217	{
	218	FILE *fd;
6b46907f RC	219	char *fnamex;
6b46907f RC	220	char *expand();
22daf918 BJ	221
	222	putchar(cc);
	223	/*
	224	* get file name
	225	*/
	226	if (prompt("Local file name? ", fname))
	227	return;
	228
	229	/*
	230	* look up file
	231	*/
6b46907f RC	232	fnamex = expand(fname);
6b46907f RC	233	if ((fd = fopen(fnamex, "r")) == NULL) {
22daf918 BJ	234	printf("%s: cannot open\r\n", fname);
	235	return;
	236	}
	237	transmit(fd, value(EOFWRITE), NULL);
a2c6551c SL	238	if (!boolean(value(ECHOCHECK))) {
	239	struct sgttyb buf;
	240
	241	ioctl(FD, TIOCGETP, &buf); /* this does a */
	242	ioctl(FD, TIOCSETP, &buf); /* wflushtty */
	243	}
22daf918 BJ	244	}
	245
	246	/*
	247	* Bulk transfer routine to remote host --
	248	* used by sendfile() and cu_put()
	249	*/
	250	transmit(fd, eofchars, command)
	251	FILE *fd;
	252	char eofchars, command;
	253	{
6b46907f	254	char *pc, lastc;
22daf918 BJ	255	int c, ccount, lcount;
22daf918 BJ	256	time_t start_t, stop_t;
ab76a038	257	int (*f)();
22daf918 BJ	258
22daf918 BJ	259	kill(pid, SIGIOT); /* put TIPOUT into a wait state */
22daf918	260	stop = 0;
ab76a038	261	f = signal(SIGINT, stopsnd);
22daf918 BJ	262	ioctl(0, TIOCSETC, &defchars);
	263	read(repdes[0], (char *)&ccc, 1);
	264	if (command != NULL) {
	265	for (pc = command; *pc; pc++)
	266	send(*pc);
a2c6551c SL	267	if (boolean(value(ECHOCHECK)))
	268	read(FD, (char )&c, 1); / trailing \n */
	269	else {
	270	struct sgttyb buf;
	271
	272	ioctl(FD, TIOCGETP, &buf); /* this does a */
	273	ioctl(FD, TIOCSETP, &buf); /* wflushtty */
	274	sleep(5); /* wait for remote stty to take effect */
	275	}
22daf918 BJ	276	}
	277	lcount = 0;
	278	lastc = '\0';
	279	start_t = time(0);
3f48242d	280	while (1) {
22daf918 BJ	281	ccount = 0;
	282	do {
	283	c = getc(fd);
	284	if (stop)
	285	goto out;
	286	if (c == EOF)
	287	goto out;
6b46907f	288	if (c == 0177 && !boolean(value(RAWFTP)))
22daf918 BJ	289	continue;
	290	lastc = c;
	291	if (c < 040) {
6b46907f RC	292	if (c == '\n') {
	293	if (!boolean(value(RAWFTP)))
	294	c = '\r';
	295	}
22daf918	296	else if (c == '\t') {
6b46907f RC	297	if (!boolean(value(RAWFTP))) {
6b46907f RC	298	if (boolean(value(TABEXPAND))) {
22daf918	299	send(' ');
6b46907f RC	300	while ((++ccount % 8) != 0)
	301	send(' ');
	302	continue;
	303	}
22daf918	304	}
6b46907f RC	305	} else
	306	if (!boolean(value(RAWFTP)))
	307	continue;
22daf918 BJ	308	}
22daf918 BJ	309	send(c);
6b46907f	310	} while (c != '\r' && !boolean(value(RAWFTP)));
22daf918 BJ	311	if (boolean(value(VERBOSE)))
22daf918 BJ	312	printf("\r%d", ++lcount);
a2c6551c	313	if (boolean(value(ECHOCHECK))) {
a2c6551c	314	timedout = 0;
ab76a038	315	alarm(value(ETIMEOUT));
a2c6551c	316	do { /* wait for prompt */
6b46907f	317	read(FD, (char *)&c, 1);
a2c6551c SL	318	if (timedout \|\| stop) {
	319	if (timedout)
	320	printf("\r\ntimed out at eol\r\n");
	321	alarm(0);
	322	goto out;
	323	}
6b46907f	324	} while ((c&0177) != character(value(PROMPT)));
a2c6551c SL	325	alarm(0);
a2c6551c SL	326	}
22daf918 BJ	327	}
22daf918 BJ	328	out:
6b46907f	329	if (lastc != '\n' && !boolean(value(RAWFTP)))
22daf918 BJ	330	send('\r');
	331	for (pc = eofchars; *pc; pc++)
	332	send(*pc);
	333	stop_t = time(0);
	334	fclose(fd);
ab76a038	335	signal(SIGINT, f);
22daf918	336	if (boolean(value(VERBOSE)))
6b46907f RC	337	if (boolean(value(RAWFTP)))
	338	prtime(" chars transferred in ", stop_t-start_t);
	339	else
	340	prtime(" lines transferred in ", stop_t-start_t);
22daf918 BJ	341	write(fildes[1], (char *)&ccc, 1);
	342	ioctl(0, TIOCSETC, &tchars);
	343	}
	344
	345	/*
	346	* Cu-like put command
	347	*/
	348	cu_put(cc)
	349	char cc;
	350	{
	351	FILE *fd;
	352	char line[BUFSIZ];
	353	int argc;
6b46907f RC	354	char *expand();
6b46907f RC	355	char *copynamex;
22daf918 BJ	356
	357	if (prompt("[put] ", copyname))
	358	return;
	359	if ((argc = args(copyname, argv)) < 1 \|\| argc > 2) {
	360	printf("usage: <put> from [to]\r\n");
	361	return;
	362	}
	363	if (argc == 1)
	364	argv[1] = argv[0];
6b46907f RC	365	copynamex = expand(argv[0]);
	366	if ((fd = fopen(copynamex, "r")) == NULL) {
	367	printf("%s: cannot open\r\n", copynamex);
22daf918 BJ	368	return;
22daf918 BJ	369	}
a2c6551c	370	if (boolean(value(ECHOCHECK)))
6b46907f	371	sprintf(line, "cat>%s\r", argv[1]);
a2c6551c	372	else
6b46907f	373	sprintf(line, "stty -echo;cat>%s;stty echo\r", argv[1]);
22daf918 BJ	374	transmit(fd, "\04", line);
	375	}
	376
	377	/*
	378	* FTP - send single character
	379	* wait for echo & handle timeout
	380	*/
	381	send(c)
	382	char c;
	383	{
96ad7152	384	char cc;
22daf918 BJ	385	int retry = 0;
	386
	387	cc = c;
6b46907f RC	388	pwrite(FD, &cc, 1);
	389	#ifdef notdef
	390	if (number(value(CDELAY)) > 0 && c != '\r')
	391	nap(number(value(CDELAY)));
	392	#endif
	393	if (!boolean(value(ECHOCHECK))) {
	394	#ifdef notdef
	395	if (number(value(LDELAY)) > 0 && c == '\r')
	396	nap(number(value(LDELAY)));
	397	#endif
a2c6551c	398	return;
6b46907f	399	}
22daf918 BJ	400	tryagain:
22daf918 BJ	401	timedout = 0;
6b46907f RC	402	alarm(value(ETIMEOUT));
6b46907f RC	403	read(FD, &cc, 1);
22daf918 BJ	404	alarm(0);
	405	if (timedout) {
	406	printf("\r\ntimeout error (%s)\r\n", ctrl(c));
	407	if (retry++ > 3)
	408	return;
6b46907f	409	pwrite(FD, &null, 1); /* poke it */
22daf918 BJ	410	goto tryagain;
	411	}
	412	}
	413
	414	timeout()
	415	{
	416	signal(SIGALRM, timeout);
	417	timedout = 1;
	418	}
	419
	420	#ifdef CONNECT
	421	/*
	422	* Fork a program with:
	423	* 0 <-> local tty in
	424	* 1 <-> local tty out
	425	* 2 <-> local tty out
	426	* 3 <-> remote tty in
	427	* 4 <-> remote tty out
	428	*/
	429	consh(c)
	430	{
	431	char buf[256];
	432	int cpid, status, p;
	433	time_t start;
	434
	435	putchar(c);
	436	if (prompt("Local command? ", buf))
	437	return;
	438	kill(pid, SIGIOT); /* put TIPOUT into a wait state */
	439	signal(SIGINT, SIG_IGN);
	440	signal(SIGQUIT, SIG_IGN);
	441	ioctl(0, TIOCSETC, &defchars);
	442	read(repdes[0], (char *)&ccc, 1);
	443	/*
	444	* Set up file descriptors in the child and
	445	* let it go...
	446	*/
	447	if ((cpid = fork()) < 0)
	448	printf("can't fork!\r\n");
	449	else if (cpid) {
	450	start = time(0);
	451	while ((p = wait(&status)) > 0 && p != cpid)
	452	;
	453	} else {
	454	register int i;
	455
	456	dup2(FD, 3);
	457	dup2(3, 4);
	458	for (i = 5; i < 20; i++)
	459	close(i);
	460	signal(SIGINT, SIG_DFL);
	461	signal(SIGQUIT, SIG_DFL);
	462	execute(buf);
	463	printf("can't find `%s'\r\n", buf);
	464	exit(0);
	465	}
	466	if (boolean(value(VERBOSE)))
	467	prtime("away for ", time(0)-start);
	468	write(fildes[1], (char *)&ccc, 1);
	469	ioctl(0, TIOCSETC, &tchars);
	470	signal(SIGINT, SIG_DFL);
	471	signal(SIGQUIT, SIG_DFL);
	472	}
	473	#endif
474
475	/*
476	* Escape to local shell
477	*/
478	shell()
479	{
480	int shpid, status;
481	extern char **environ;
482	char *cp;
483
484	printf("[sh]\r\n");
485	signal(SIGINT, SIG_IGN);
486	signal(SIGQUIT, SIG_IGN);
487	unraw();
488	if (shpid = fork()) {
489	while (shpid != wait(&status));
490	raw();
491	printf("\r\n!\r\n");
492	signal(SIGINT, SIG_DFL);
493	signal(SIGQUIT, SIG_DFL);
494	return;
495	} else {
496	signal(SIGQUIT, SIG_DFL);
497	signal(SIGINT, SIG_DFL);
498	if ((cp = rindex(value(SHELL), '/')) == NULL)
499	cp = value(SHELL);
500	else
501	cp++;
502	execl(value(SHELL), cp, 0);
503	printf("\r\ncan't execl!\r\n");
504	exit(1);
505	}
506	}
507
508	/*
509	* TIPIN portion of scripting
510	* initiate the conversation with TIPOUT
511	*/
512	setscript()
513	{
514	char c;
515	/*
516	* enable TIPOUT side for dialogue
517	*/
518	kill(pid, SIGEMT);
519	if (boolean(value(SCRIPT)))
520	write(fildes[1], value(RECORD), size(value(RECORD)));
521	write(fildes[1], "\n", 1);
522	/*
523	* wait for TIPOUT to finish
524	*/
525	read(repdes[0], &c, 1);
526	if (c == 'n')
527	printf("can't create %s\r\n", value(RECORD));
528	}
529
530	/*
531	* Change current working directory of
532	* local portion of tip
533	*/
534	chdirectory()
535	{
05862919	536	char dirname[80];
22daf918 BJ	537	register char *cp = dirname;
22daf918 BJ	538
05862919	539	if (prompt("[cd] ", dirname)) {
22daf918 BJ	540	if (stoprompt)
22daf918 BJ	541	return;
05862919 SL	542	cp = value(HOME);
05862919 SL	543	}
22daf918 BJ	544	if (chdir(cp) < 0)
	545	printf("%s: bad directory\r\n", cp);
	546	printf("!\r\n");
	547	}
	548
e2326c44 SL	549	abort(msg)
e2326c44 SL	550	char *msg;
22daf918	551	{
6b46907f	552
22daf918	553	kill(pid, SIGTERM);
e2326c44 SL	554	disconnect(msg);
	555	if (msg != NOSTR)
	556	printf("\r\n%s", msg);
22daf918 BJ	557	printf("\r\n[EOT]\r\n");
22daf918 BJ	558	delock(uucplock);
22daf918 BJ	559	unraw();
	560	exit(0);
	561	}
	562
e2326c44 SL	563	finish()
	564	{
	565	char *dismsg;
	566
	567	if ((dismsg = value(DISCONNECT)) != NOSTR) {
	568	write(FD, dismsg, strlen(dismsg));
	569	sleep(5);
	570	}
	571	abort(NOSTR);
	572	}
	573
22daf918 BJ	574	intcopy()
22daf918 BJ	575	{
05862919	576
22daf918 BJ	577	raw();
22daf918 BJ	578	quit = 1;
05862919	579	longjmp(intbuf, 1);
22daf918 BJ	580	}
	581
	582	execute(s)
	583	char *s;
	584	{
	585	register char *cp;
	586
	587	if ((cp = rindex(value(SHELL), '/')) == NULL)
	588	cp = value(SHELL);
	589	else
	590	cp++;
	591	execl(value(SHELL), cp, "-c", s, 0);
	592	}
	593
	594	args(buf, a)
	595	char buf, a[];
	596	{
	597	register char p = buf, start;
	598	register char **parg = a;
	599	register int n = 0;
	600
	601	do {
	602	while (p && (p == ' ' \|\| *p == '\t'))
	603	p++;
	604	start = p;
	605	if (*p)
	606	*parg = p;
	607	while (p && (p != ' ' && *p != '\t'))
	608	p++;
	609	if (p != start)
	610	parg++, n++;
	611	if (*p)
	612	*p++ = '\0';
	613	} while (*p);
	614
	615	return(n);
	616	}
	617
	618	prtime(s, a)
	619	char *s;
	620	time_t a;
	621	{
	622	register i;
	623	int nums[3];
	624
	625	for (i = 0; i < 3; i++) {
	626	nums[i] = (int)(a % quant[i]);
	627	a /= quant[i];
	628	}
	629	printf("%s", s);
	630	while (--i >= 0)
ab76a038	631	if (nums[i] \|\| i == 0 && nums[1] == 0 && nums[2] == 0)
22daf918 BJ	632	printf("%d %s%c ", nums[i], sep[i],
	633	nums[i] == 1 ? '\0' : 's');
	634	printf("\r\n!\r\n");
	635	}
	636
	637	variable()
	638	{
	639	char buf[256];
	640
	641	if (prompt("[set] ", buf))
	642	return;
	643	vlex(buf);
	644	if (vtable[BEAUTIFY].v_access&CHANGED) {
	645	vtable[BEAUTIFY].v_access &= ~CHANGED;
3463e9c6	646	kill(pid, SIGSYS);
22daf918 BJ	647	}
	648	if (vtable[SCRIPT].v_access&CHANGED) {
	649	vtable[SCRIPT].v_access &= ~CHANGED;
	650	setscript();
7367df0e SL	651	/*
	652	* So that "set record=blah script" doesn't
	653	* cause two transactions to occur.
	654	*/
	655	if (vtable[RECORD].v_access&CHANGED)
	656	vtable[RECORD].v_access &= ~CHANGED;
22daf918 BJ	657	}
	658	if (vtable[RECORD].v_access&CHANGED) {
	659	vtable[RECORD].v_access &= ~CHANGED;
	660	if (boolean(value(SCRIPT)))
	661	setscript();
	662	}
6b46907f RC	663	if (vtable[TAND].v_access&CHANGED) {
	664	vtable[TAND].v_access &= ~CHANGED;
	665	if (boolean(value(TAND)))
	666	tandem("on");
	667	else
	668	tandem("off");
	669	}
	670	if (vtable[LECHO].v_access&CHANGED) {
	671	vtable[LECHO].v_access &= ~CHANGED;
	672	HD = boolean(value(LECHO));
	673	}
	674	if (vtable[PARITY].v_access&CHANGED) {
	675	vtable[PARITY].v_access &= ~CHANGED;
	676	setparity();
	677	}
	678	}
	679
	680	/*
05862919	681	* Turn tandem mode on or off for remote tty.
6b46907f	682	*/
6b46907f	683	tandem(option)
05862919	684	char *option;
6b46907f RC	685	{
	686	struct sgttyb rmtty;
	687
	688	ioctl(FD, TIOCGETP, &rmtty);
	689	if (strcmp(option,"on") == 0) {
	690	rmtty.sg_flags \|= TANDEM;
	691	arg.sg_flags \|= TANDEM;
05862919	692	} else {
6b46907f RC	693	rmtty.sg_flags &= ~TANDEM;
	694	arg.sg_flags &= ~TANDEM;
	695	}
	696	ioctl(FD, TIOCSETP, &rmtty);
	697	ioctl(0, TIOCSETP, &arg);
22daf918	698	}
061754f3 SL	699
	700	/*
	701	* Send a break.
061754f3 SL	702	*/
	703	genbrk()
	704	{
05862919	705
061754f3 SL	706	ioctl(FD, TIOCSBRK, NULL);
	707	sleep(1);
	708	ioctl(FD, TIOCCBRK, NULL);
061754f3	709	}
3f48242d	710
3f48242d SL	711	/*
	712	* Suspend tip
	713	*/
	714	suspend()
	715	{
05862919	716
3f48242d SL	717	unraw();
	718	kill(0, SIGTSTP);
	719	raw();
	720	}
6b46907f RC	721
	722	/*
	723	* expand a file name if it includes shell meta characters
	724	*/
	725
	726	char *
	727	expand(name)
	728	char name[];
	729	{
	730	static char xname[BUFSIZ];
	731	char cmdbuf[BUFSIZ];
	732	register int pid, l, rc;
	733	register char cp, Shell;
	734	int s, pivec[2], (*sigint)();
	735
	736	if (!anyof(name, "~{[*?$`'\"\\"))
	737	return(name);
	738	/* sigint = signal(SIGINT, SIG_IGN); */
	739	if (pipe(pivec) < 0) {
	740	perror("pipe");
	741	/* signal(SIGINT, sigint) */
	742	return(name);
	743	}
	744	sprintf(cmdbuf, "echo %s", name);
	745	if ((pid = vfork()) == 0) {
	746	Shell = value(SHELL);
	747	if (Shell == NOSTR)
	748	Shell = "/bin/sh";
	749	close(pivec[0]);
	750	close(1);
	751	dup(pivec[1]);
	752	close(pivec[1]);
	753	close(2);
	754	execl(Shell, Shell, "-c", cmdbuf, 0);
	755	_exit(1);
	756	}
	757	if (pid == -1) {
	758	perror("fork");
	759	close(pivec[0]);
	760	close(pivec[1]);
	761	return(NOSTR);
	762	}
	763	close(pivec[1]);
	764	l = read(pivec[0], xname, BUFSIZ);
	765	close(pivec[0]);
	766	while (wait(&s) != pid);
	767	;
	768	s &= 0377;
	769	if (s != 0 && s != SIGPIPE) {
	770	fprintf(stderr, "\"Echo\" failed\n");
	771	return(NOSTR);
	772	}
	773	if (l < 0) {
	774	perror("read");
	775	return(NOSTR);
	776	}
	777	if (l == 0) {
	778	fprintf(stderr, "\"%s\": No match\n", name);
	779	return(NOSTR);
	780	}
	781	if (l == BUFSIZ) {
	782	fprintf(stderr, "Buffer overflow expanding \"%s\"\n", name);
	783	return(NOSTR);
	784	}
785	xname[l] = 0;
786	for (cp = &xname[l-1]; *cp == '\n' && cp > xname; cp--)
787	;
788	*++cp = '\0';
789	return(xname);
790	}
791
792	/*
793	* Are any of the characters in the two strings the same?
794	*/
795
796	anyof(s1, s2)
797	register char s1, s2;
798	{
799	register int c;
800
801	while (c = *s1++)
802	if (any(c, s2))
803	return(1);
804	return(0);
805	}