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

/*	tip.c	4.7	81/08/16	*/
/*
 * tip - Unix link to other systems
 *  tip [-v] [-speed] system-name
 *
 * Uses remote file for system descriptions.
 * Current commands (escapes):
 *
 *	~!	fork a shell on the local machine
 *	~c	change working directory on local machine
 *	~^D	exit tip
 *	~<	fetch file from remote system
 *	~>	send file to remote system
 *	~t	take a file from a remote UNIX (uses cat & echo)
 *	~p	send a file to a remote UNIX (uses cat)
 *	~|	fetch file from remote system and pipe it to
 *		 a local process
 *	~%	fork and wait for a program which inherits file
 *		 descriptors 3 & 4 attached to the remote machine
 *		 (optional by CONNECT define)
 *	~s	set or show variable
 *	~?	give a help summary
 *
 * Samuel J. Leffler	1-18-81
 *
 * sjl			2-11-81
 * add auto-dial stuff for the BIZCOMP
 *
 * sjl			2-14-81
 * cleaned up auto-dialer stuff and added variables
 *
 * sjl			2-19-81
 * handle quit and interrupt during calls
 *
 * sjl			3-8-81
 * made to pass lint
 *
 * sjl			4-11-81
 * mods to handle both FIOCAPACITY and FIONREAD in biz.c
 *
 * sjl			4-17-81
 * added take and put, made piping stuff work
 * honor uucp locks
 * rewrite remote file stuff for DN-11 like acu's and just to clean
 *   it up
 *
 * sjl			6-16-81
 * real working setup for DN-11's
 */

#include "tip.h"

/*
 * Baud rate mapping table
 */
int bauds[] = {
	0, 50, 75, 110, 134, 150, 200, 300, 600,
	1200, 1800, 2400, 4800, 9600, 19200, -1
};

#ifdef VMUNIX
int	disc = OTTYDISC;		/* tip normally runs this way */
#endif

int	intprompt();
int	timeout();
static int cleanup();

main(argc, argv)
char *argv[];
{
	char *system = NOSTR;
	register int i;
	char *p;

	if (argc > 4) {
		fprintf(stderr, "usage: tip [-v] [-speed] [system-name]\n");
		exit(1);
	}
	if (!isatty(0)) {
		fprintf(stderr, "tip: must be interactive\n");
		exit(1);
	}
	if (argc > 1 && argv[argc-1][0] != '-')
		system = argv[argc-1];		/* always last item */
	signal(SIGINT, cleanup);
	signal(SIGQUIT, cleanup);
	signal(SIGHUP, cleanup);
	signal(SIGTERM, cleanup);

	if ((i = hunt(system)) == 0) {
		printf("all ports busy\n");
		exit(3);
	}
	if (i == -1) {
		printf("link down\n");
		exit(3);
	}
	setbuf(stdout, NULL);
	loginit();
	/*
	 * Now that we have the logfile and the ACU open
	 *  return to the real uid and gid.  These things will
	 *  be closed on exit.  Note that we can't run as root,
	 *  because locking mechanism on the tty and the accounting
	 *  will be bypassed.
	 */
	setuid(getuid());
	setgid(getgid());
	for (i = 1; i < argc-1; i++)
		if (equal(argv[i], "-v"))
			vflag++;
	/*
	 * Kludge, their's no easy way to get the initialization
	 *   in the right order, so force it here
	 */
	if ((PH = getenv("PHONES")) == NOSTR)
		PH = "/etc/phones";
	vinit();				/* init variables */
	for (i = 1; i < argc-1; i++)
		if (argv[i][0] == '-' && argv[i][1] != 'v') {
			if (isnum(argv[i][1]))
				number(value(BAUDRATE)) = atoi(&argv[i][1]);
			else
				printf("%s: unknown option\n", argv[i]);
		}
	if ((i = speed(number(value(BAUDRATE)))) == NULL) {
		printf("tip: bad baud rate %d\n", number(value(BAUDRATE)));
		delock(uucplock);
		exit(3);
	}

	/*
	 * Hardwired connections require the
	 *  line speed set before they make any transmissions
	 *  (this is particularly true of things like a DF03-AC)
	 */
	if (HW)
		ttysetup(i);
	if (p = connect()) {
		printf("\07%s\n[EOT]\n", p);
		delock(uucplock);
		exit(1);
	}
	if (!HW)
		ttysetup(i);

	/*
	 * Set up local tty state
	 */
	ioctl(0, TIOCGETP, (char *)&defarg);
	ioctl(0, TIOCGETC, (char *)&defchars);
#ifdef VMUNIX
	ioctl(0, TIOCGETD, (char *)&odisc);
#endif
	arg = defarg;
	arg.sg_flags = ANYP | CBREAK;
	tchars = defchars;
	tchars.t_intrc = tchars.t_quitc = -1;
	raw();

	pipe(fildes); pipe(repdes);
	signal(SIGALRM, timeout);

	/*
	 * Everything's set up now:
	 *	connection established (hardwired or diaulup)
	 *	line conditioned (baud rate, mode, etc.)
	 *	internal data structures (variables)
	 * so, fork one process for local side and one for remote.
	 */
	write(1, "\07connected\r\n", 12);
	if (pid = fork())
		tipin();
	else
		tipout();
	/*NOTREACHED*/
}

static
cleanup()
{
	delock(uucplock);
#ifdef VMUNIX
	if (odisc)
		ioctl(0, TIOCSETD, (char *)&odisc);
#endif
	exit(0);
}

/*
 * put the controlling keyboard into raw mode
 */
raw()
{
	ioctl(0, TIOCSETP, &arg);
	ioctl(0, TIOCSETC, &tchars);
#ifdef VMUNIX
	ioctl(0, TIOCSETD, (char *)&disc);
#endif
}


/*
 * return keyboard to normal mode
 */
unraw()
{
#ifdef VMUNIX
	ioctl(0, TIOCSETD, (char *)&odisc);
#endif
	ioctl(0, TIOCSETP, (char *)&defarg);
	ioctl(0, TIOCSETC, (char *)&defchars);
}

/*
 * Print string ``s'', then read a string
 *  in from the terminal.  Handles signals & allows use of
 *  normal erase and kill characters.
 */
prompt(s, p)
	char *s;
	register char *p;
{
	register char *b = p;

	stoprompt = 0;
	signal(SIGINT, intprompt);
	signal(SIGQUIT, SIG_IGN);
	unraw();
	printf("%s", s);
	while ((*p = getchar()) != EOF && *p != '\n') {
		if (stoprompt)
			goto pbreak;
		p++;
	}
	*p = '\0';
pbreak:
	raw();
	signal(SIGINT, SIG_DFL);
	signal(SIGQUIT,SIG_DFL);
	return(stoprompt || p == b);
}

/*
 * Interrupt service routine during prompting
 */
intprompt()
{
	signal(SIGINT, SIG_IGN);
	stoprompt = 1;
	printf("\r\n");
}

/*
 * ****TIPIN   TIPIN****
 */
tipin()
{
	char gch, bol = 1;

	/*
	 * Kinda klugey here...
	 *   check for scripting being turned on from the .tiprc file,
	 *   but be careful about just using setscript(), as we may
	 *   send a SIGEMT before tipout has a chance to set up catching
	 *   it; so wait a second, then setscript()
	 */
	if (boolean(value(SCRIPT))) {
		sleep(1);
		setscript();
	}

	while (1) {
		gch = getchar()&0177;
		if ((gch == character(value(ESCAPE))) && bol) {
			if (!(gch = escape()))
				continue;
		} else if (gch == character(value(RAISECHAR))) {
			boolean(value(RAISE)) = !boolean(value(RAISE));
			printf("%s", ctrl(character(value(RAISECHAR))));
			continue;
		} else if (gch == '\r') {
			bol = 1;
			write(FD, &gch, 1);
			continue;
		} else if (gch == character(value(FORCE))) {
			printf("%s", ctrl(character(value(FORCE))));
			gch = getchar()&0177;
		}
		bol = any(gch, value(EOL));
		if (boolean(value(RAISE)) && islower(gch))
			toupper(gch);
		write(FD, &gch, 1);
	}
}

/*
 * Escape handler --
 *  called on recognition of ``escapec'' at the beginning of a line
 */
escape()
{
	register char gch;
	register esctable_t *p;
	char c = character(value(ESCAPE));
	extern esctable_t etable[];

	gch = (getchar()&0177);
	for (p = etable; p->e_char; p++)
		if (p->e_char == gch) {
			if ((p->e_flags&PRIV) && getuid())
				continue;
			printf("%s", ctrl(c));
			(*p->e_func)(gch);
			return(0);
		}
	/* ESCAPE ESCAPE forces ESCAPE */
	if (c != gch)
		write(FD, &c, 1);
	return(gch);
}

speed(n)
{
	register int *p;

	for (p = bauds; *p != -1;  p++)
		if (*p == n)
			return(p-bauds);
	return(NULL);
}

any(c, p)
	register char c, *p;
{
	while (*p)
		if (*p++ == c)
			return(1);
	return(0);
}

size(s)
	register char	*s;
{
	register int	i = 0;

	while (*s++) i++;
	return(i);
}

char *
interp(s)
	register char *s;
{
	static char buf[256];
	register char *p = buf, c, *q;

	while (c = *s++) {
		for (q = "\nn\rr\tt\ff\033E\bb"; *q; q++)
			if (*q++ == c) {
				*p++ = '\\'; *p++ = *q;
				goto next;
			}
		if (c < 040) {
			*p++ = '^'; *p++ = c + 'A'-1;
		} else if (c == 0177) {
			*p++ = '^'; *p++ = '?';
		} else
			*p++ = c;
	next:
		;
	}
	*p = '\0';
	return(buf);
}

char *
ctrl(c)
	char c;
{
	static char s[3];

	if (c < 040 || c == 0177) {
		s[0] = '^';
		s[1] = c == 0177 ? '?' : c+'A'-1;
		s[2] = '\0';
	} else {
		s[0] = c;
		s[1] = '\0';
	}
	return(s);
}

/*
 * Help command
 */
help(c)
	char c;
{
	register esctable_t *p;
	extern esctable_t etable[];

	printf("%c\r\n", c);
	for (p = etable; p->e_char; p++) {
		if ((p->e_flags&PRIV) && getuid())
			continue;
		printf("%2s", ctrl(character(value(ESCAPE))));
		printf("%-2s %c   %s\r\n", ctrl(p->e_char),
			p->e_flags&EXP ? '*': ' ', p->e_help);
	}
}

/*
 * Set up the "remote" tty's state
 */
static
ttysetup(speed)
{
#ifdef VMUNIX
	unsigned bits = LDECCTQ;
#endif

	arg.sg_ispeed = arg.sg_ospeed = speed;
	arg.sg_flags = TANDEM|RAW;
	ioctl(FD, TIOCSETP, (char *)&arg);
#ifdef VMUNIX
	ioctl(FD, TIOCLBIS, (char *)&bits);
#endif
}
Commit	Line	Data
62f62be8	1	/* tip.c 4.7 81/08/16 */
5f50159a BJ	2	/*
	3	* tip - Unix link to other systems
	4	* tip [-v] [-speed] system-name
	5	*
	6	* Uses remote file for system descriptions.
	7	* Current commands (escapes):
	8	*
	9	* ~! fork a shell on the local machine
	10	* ~c change working directory on local machine
	11	* ~^D exit tip
	12	* ~< fetch file from remote system
	13	* ~> send file to remote system
	14	* ~t take a file from a remote UNIX (uses cat & echo)
	15	* ~p send a file to a remote UNIX (uses cat)
	16	* ~\| fetch file from remote system and pipe it to
	17	* a local process
	18	* ~% fork and wait for a program which inherits file
	19	* descriptors 3 & 4 attached to the remote machine
	20	* (optional by CONNECT define)
	21	* ~s set or show variable
	22	* ~? give a help summary
	23	*
	24	* Samuel J. Leffler 1-18-81
	25	*
	26	* sjl 2-11-81
	27	* add auto-dial stuff for the BIZCOMP
	28	*
	29	* sjl 2-14-81
	30	* cleaned up auto-dialer stuff and added variables
	31	*
	32	* sjl 2-19-81
	33	* handle quit and interrupt during calls
	34	*
	35	* sjl 3-8-81
	36	* made to pass lint
	37	*
	38	* sjl 4-11-81
	39	* mods to handle both FIOCAPACITY and FIONREAD in biz.c
	40	*
	41	* sjl 4-17-81
	42	* added take and put, made piping stuff work
	43	* honor uucp locks
	44	* rewrite remote file stuff for DN-11 like acu's and just to clean
	45	* it up
f0211bf2 SL	46	*
	47	* sjl 6-16-81
	48	* real working setup for DN-11's
5f50159a BJ	49	*/
	50
	51	#include "tip.h"
	52
	53	/*
	54	* Baud rate mapping table
	55	*/
	56	int bauds[] = {
	57	0, 50, 75, 110, 134, 150, 200, 300, 600,
	58	1200, 1800, 2400, 4800, 9600, 19200, -1
	59	};
	60
4b675d70 SL	61	#ifdef VMUNIX
	62	int disc = OTTYDISC; /* tip normally runs this way */
	63	#endif
	64
5f50159a BJ	65	int intprompt();
	66	int timeout();
	67	static int cleanup();
	68
	69	main(argc, argv)
	70	char *argv[];
	71	{
	72	char *system = NOSTR;
	73	register int i;
5f50159a BJ	74	char *p;
	75
	76	if (argc > 4) {
	77	fprintf(stderr, "usage: tip [-v] [-speed] [system-name]\n");
	78	exit(1);
	79	}
	80	if (!isatty(0)) {
	81	fprintf(stderr, "tip: must be interactive\n");
	82	exit(1);
	83	}
	84	if (argc > 1 && argv[argc-1][0] != '-')
	85	system = argv[argc-1]; /* always last item */
	86	signal(SIGINT, cleanup);
	87	signal(SIGQUIT, cleanup);
	88	signal(SIGHUP, cleanup);
	89	signal(SIGTERM, cleanup);
f0211bf2	90
5f50159a BJ	91	if ((i = hunt(system)) == 0) {
	92	printf("all ports busy\n");
	93	exit(3);
	94	}
	95	if (i == -1) {
	96	printf("link down\n");
	97	exit(3);
	98	}
eaa86232	99	setbuf(stdout, NULL);
5f50159a BJ	100	loginit();
	101	/*
	102	* Now that we have the logfile and the ACU open
	103	* return to the real uid and gid. These things will
	104	* be closed on exit. Note that we can't run as root,
	105	* because locking mechanism on the tty and the accounting
	106	* will be bypassed.
	107	*/
	108	setuid(getuid());
	109	setgid(getgid());
	110	for (i = 1; i < argc-1; i++)
	111	if (equal(argv[i], "-v"))
	112	vflag++;
	113	/*
	114	* Kludge, their's no easy way to get the initialization
	115	* in the right order, so force it here
	116	*/
	117	if ((PH = getenv("PHONES")) == NOSTR)
	118	PH = "/etc/phones";
	119	vinit(); /* init variables */
	120	for (i = 1; i < argc-1; i++)
	121	if (argv[i][0] == '-' && argv[i][1] != 'v') {
	122	if (isnum(argv[i][1]))
	123	number(value(BAUDRATE)) = atoi(&argv[i][1]);
	124	else
	125	printf("%s: unknown option\n", argv[i]);
	126	}
4b675d70	127	if ((i = speed(number(value(BAUDRATE)))) == NULL) {
5f50159a BJ	128	printf("tip: bad baud rate %d\n", number(value(BAUDRATE)));
	129	delock(uucplock);
	130	exit(3);
	131	}
f0211bf2	132
4b675d70 SL	133	/*
	134	* Hardwired connections require the
	135	* line speed set before they make any transmissions
	136	* (this is particularly true of things like a DF03-AC)
	137	*/
	138	if (HW)
	139	ttysetup(i);
f0211bf2 SL	140	if (p = connect()) {
	141	printf("\07%s\n[EOT]\n", p);
	142	delock(uucplock);
	143	exit(1);
	144	}
4b675d70 SL	145	if (!HW)
	146	ttysetup(i);
	147
5f50159a	148	/*
4b675d70	149	* Set up local tty state
5f50159a	150	*/
4b675d70 SL	151	ioctl(0, TIOCGETP, (char *)&defarg);
4b675d70 SL	152	ioctl(0, TIOCGETC, (char *)&defchars);
5d1f1475	153	#ifdef VMUNIX
4b675d70	154	ioctl(0, TIOCGETD, (char *)&odisc);
5d1f1475	155	#endif
5f50159a BJ	156	arg = defarg;
	157	arg.sg_flags = ANYP \| CBREAK;
	158	tchars = defchars;
	159	tchars.t_intrc = tchars.t_quitc = -1;
5f50159a	160	raw();
4b675d70	161
5f50159a BJ	162	pipe(fildes); pipe(repdes);
5f50159a BJ	163	signal(SIGALRM, timeout);
f0211bf2 SL	164
	165	/*
	166	* Everything's set up now:
	167	* connection established (hardwired or diaulup)
	168	* line conditioned (baud rate, mode, etc.)
	169	* internal data structures (variables)
	170	* so, fork one process for local side and one for remote.
	171	*/
	172	write(1, "\07connected\r\n", 12);
5f50159a BJ	173	if (pid = fork())
	174	tipin();
	175	else
	176	tipout();
	177	/NOTREACHED/
	178	}
	179
	180	static
	181	cleanup()
	182	{
	183	delock(uucplock);
f0211bf2 SL	184	#ifdef VMUNIX
	185	if (odisc)
	186	ioctl(0, TIOCSETD, (char *)&odisc);
	187	#endif
5f50159a BJ	188	exit(0);
	189	}
	190
	191	/*
	192	* put the controlling keyboard into raw mode
	193	*/
	194	raw()
	195	{
	196	ioctl(0, TIOCSETP, &arg);
	197	ioctl(0, TIOCSETC, &tchars);
4b675d70 SL	198	#ifdef VMUNIX
	199	ioctl(0, TIOCSETD, (char *)&disc);
	200	#endif
5f50159a BJ	201	}
	202
	203
	204	/*
	205	* return keyboard to normal mode
	206	*/
	207	unraw()
	208	{
4b675d70 SL	209	#ifdef VMUNIX
	210	ioctl(0, TIOCSETD, (char *)&odisc);
	211	#endif
	212	ioctl(0, TIOCSETP, (char *)&defarg);
	213	ioctl(0, TIOCSETC, (char *)&defchars);
5f50159a BJ	214	}
	215
	216	/*
	217	* Print string ``s'', then read a string
	218	* in from the terminal. Handles signals & allows use of
	219	* normal erase and kill characters.
	220	*/
	221	prompt(s, p)
	222	char *s;
	223	register char *p;
	224	{
	225	register char *b = p;
	226
	227	stoprompt = 0;
	228	signal(SIGINT, intprompt);
	229	signal(SIGQUIT, SIG_IGN);
	230	unraw();
	231	printf("%s", s);
	232	while ((p = getchar()) != EOF && p != '\n') {
	233	if (stoprompt)
	234	goto pbreak;
	235	p++;
	236	}
	237	*p = '\0';
	238	pbreak:
	239	raw();
	240	signal(SIGINT, SIG_DFL);
	241	signal(SIGQUIT,SIG_DFL);
	242	return(stoprompt \|\| p == b);
	243	}
	244
	245	/*
	246	* Interrupt service routine during prompting
	247	*/
	248	intprompt()
	249	{
	250	signal(SIGINT, SIG_IGN);
	251	stoprompt = 1;
	252	printf("\r\n");
	253	}
	254
	255	/*
	256	* **TIPIN TIPIN**
	257	*/
	258	tipin()
	259	{
	260	char gch, bol = 1;
	261
388a70dc SL	262	/*
	263	* Kinda klugey here...
	264	* check for scripting being turned on from the .tiprc file,
	265	* but be careful about just using setscript(), as we may
	266	* send a SIGEMT before tipout has a chance to set up catching
	267	* it; so wait a second, then setscript()
	268	*/
	269	if (boolean(value(SCRIPT))) {
	270	sleep(1);
	271	setscript();
	272	}
	273
5f50159a BJ	274	while (1) {
	275	gch = getchar()&0177;
	276	if ((gch == character(value(ESCAPE))) && bol) {
	277	if (!(gch = escape()))
	278	continue;
	279	} else if (gch == character(value(RAISECHAR))) {
	280	boolean(value(RAISE)) = !boolean(value(RAISE));
	281	printf("%s", ctrl(character(value(RAISECHAR))));
	282	continue;
	283	} else if (gch == '\r') {
	284	bol = 1;
	285	write(FD, &gch, 1);
	286	continue;
	287	} else if (gch == character(value(FORCE))) {
	288	printf("%s", ctrl(character(value(FORCE))));
	289	gch = getchar()&0177;
	290	}
	291	bol = any(gch, value(EOL));
	292	if (boolean(value(RAISE)) && islower(gch))
	293	toupper(gch);
	294	write(FD, &gch, 1);
	295	}
	296	}
	297
	298	/*
	299	* Escape handler --
	300	* called on recognition of ``escapec'' at the beginning of a line
	301	*/
	302	escape()
	303	{
	304	register char gch;
	305	register esctable_t *p;
	306	char c = character(value(ESCAPE));
	307	extern esctable_t etable[];
	308
	309	gch = (getchar()&0177);
	310	for (p = etable; p->e_char; p++)
	311	if (p->e_char == gch) {
	312	if ((p->e_flags&PRIV) && getuid())
	313	continue;
	314	printf("%s", ctrl(c));
	315	(*p->e_func)(gch);
	316	return(0);
	317	}
62f62be8 SL	318	/* ESCAPE ESCAPE forces ESCAPE */
	319	if (c != gch)
	320	write(FD, &c, 1);
5f50159a BJ	321	return(gch);
	322	}
	323
	324	speed(n)
	325	{
	326	register int *p;
	327
	328	for (p = bauds; *p != -1; p++)
	329	if (*p == n)
	330	return(p-bauds);
	331	return(NULL);
	332	}
	333
	334	any(c, p)
	335	register char c, *p;
	336	{
	337	while (*p)
	338	if (*p++ == c)
	339	return(1);
	340	return(0);
	341	}
	342
	343	size(s)
	344	register char *s;
	345	{
	346	register int i = 0;
	347
	348	while (*s++) i++;
	349	return(i);
	350	}
	351
	352	char *
	353	interp(s)
	354	register char *s;
	355	{
	356	static char buf[256];
	357	register char p = buf, c, q;
	358
	359	while (c = *s++) {
	360	for (q = "\nn\rr\tt\ff\033E\bb"; *q; q++)
	361	if (*q++ == c) {
	362	p++ = '\\'; p++ = *q;
	363	goto next;
	364	}
	365	if (c < 040) {
	366	p++ = '^'; p++ = c + 'A'-1;
	367	} else if (c == 0177) {
	368	p++ = '^'; p++ = '?';
	369	} else
	370	*p++ = c;
	371	next:
	372	;
	373	}
	374	*p = '\0';
	375	return(buf);
	376	}
	377
	378	char *
	379	ctrl(c)
	380	char c;
	381	{
	382	static char s[3];
	383
	384	if (c < 040 \|\| c == 0177) {
385	s[0] = '^';
386	s[1] = c == 0177 ? '?' : c+'A'-1;
387	s[2] = '\0';
388	} else {
389	s[0] = c;
390	s[1] = '\0';
391	}
392	return(s);
393	}
394
395	/*
396	* Help command
397	*/
398	help(c)
399	char c;
400	{
401	register esctable_t *p;
402	extern esctable_t etable[];
403
404	printf("%c\r\n", c);
405	for (p = etable; p->e_char; p++) {
406	if ((p->e_flags&PRIV) && getuid())
407	continue;
408	printf("%2s", ctrl(character(value(ESCAPE))));
409	printf("%-2s %c %s\r\n", ctrl(p->e_char),
410	p->e_flags&EXP ? '*': ' ', p->e_help);
411	}
412	}
4b675d70 SL	413
	414	/*
	415	* Set up the "remote" tty's state
	416	*/
	417	static
	418	ttysetup(speed)
	419	{
	420	#ifdef VMUNIX
	421	unsigned bits = LDECCTQ;
	422	#endif
	423
	424	arg.sg_ispeed = arg.sg_ospeed = speed;
	425	arg.sg_flags = TANDEM\|RAW;
	426	ioctl(FD, TIOCSETP, (char *)&arg);
	427	#ifdef VMUNIX
	428	ioctl(FD, TIOCLBIS, (char *)&bits);
	429	#endif
	430	}