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

/*	tip.c	4.8	81/08/26	*/
/*
 * 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");
		delock(uucplock);
		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
1603e05e	1	/* tip.c 4.8 81/08/26 */
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");
1603e05e	97	delock(uucplock);
5f50159a BJ	98	exit(3);
5f50159a BJ	99	}
eaa86232	100	setbuf(stdout, NULL);
5f50159a BJ	101	loginit();
	102	/*
	103	* Now that we have the logfile and the ACU open
	104	* return to the real uid and gid. These things will
	105	* be closed on exit. Note that we can't run as root,
	106	* because locking mechanism on the tty and the accounting
	107	* will be bypassed.
	108	*/
	109	setuid(getuid());
	110	setgid(getgid());
	111	for (i = 1; i < argc-1; i++)
	112	if (equal(argv[i], "-v"))
	113	vflag++;
	114	/*
	115	* Kludge, their's no easy way to get the initialization
	116	* in the right order, so force it here
	117	*/
	118	if ((PH = getenv("PHONES")) == NOSTR)
	119	PH = "/etc/phones";
	120	vinit(); /* init variables */
	121	for (i = 1; i < argc-1; i++)
	122	if (argv[i][0] == '-' && argv[i][1] != 'v') {
	123	if (isnum(argv[i][1]))
	124	number(value(BAUDRATE)) = atoi(&argv[i][1]);
	125	else
	126	printf("%s: unknown option\n", argv[i]);
	127	}
4b675d70	128	if ((i = speed(number(value(BAUDRATE)))) == NULL) {
5f50159a BJ	129	printf("tip: bad baud rate %d\n", number(value(BAUDRATE)));
	130	delock(uucplock);
	131	exit(3);
	132	}
f0211bf2	133
4b675d70 SL	134	/*
	135	* Hardwired connections require the
	136	* line speed set before they make any transmissions
	137	* (this is particularly true of things like a DF03-AC)
	138	*/
	139	if (HW)
	140	ttysetup(i);
f0211bf2 SL	141	if (p = connect()) {
	142	printf("\07%s\n[EOT]\n", p);
	143	delock(uucplock);
	144	exit(1);
	145	}
4b675d70 SL	146	if (!HW)
	147	ttysetup(i);
	148
5f50159a	149	/*
4b675d70	150	* Set up local tty state
5f50159a	151	*/
4b675d70 SL	152	ioctl(0, TIOCGETP, (char *)&defarg);
4b675d70 SL	153	ioctl(0, TIOCGETC, (char *)&defchars);
5d1f1475	154	#ifdef VMUNIX
4b675d70	155	ioctl(0, TIOCGETD, (char *)&odisc);
5d1f1475	156	#endif
5f50159a BJ	157	arg = defarg;
	158	arg.sg_flags = ANYP \| CBREAK;
	159	tchars = defchars;
	160	tchars.t_intrc = tchars.t_quitc = -1;
5f50159a	161	raw();
4b675d70	162
5f50159a BJ	163	pipe(fildes); pipe(repdes);
5f50159a BJ	164	signal(SIGALRM, timeout);
f0211bf2 SL	165
	166	/*
	167	* Everything's set up now:
	168	* connection established (hardwired or diaulup)
	169	* line conditioned (baud rate, mode, etc.)
	170	* internal data structures (variables)
	171	* so, fork one process for local side and one for remote.
	172	*/
	173	write(1, "\07connected\r\n", 12);
5f50159a BJ	174	if (pid = fork())
	175	tipin();
	176	else
	177	tipout();
	178	/NOTREACHED/
	179	}
	180
	181	static
	182	cleanup()
	183	{
	184	delock(uucplock);
f0211bf2 SL	185	#ifdef VMUNIX
	186	if (odisc)
	187	ioctl(0, TIOCSETD, (char *)&odisc);
	188	#endif
5f50159a BJ	189	exit(0);
	190	}
	191
	192	/*
	193	* put the controlling keyboard into raw mode
	194	*/
	195	raw()
	196	{
	197	ioctl(0, TIOCSETP, &arg);
	198	ioctl(0, TIOCSETC, &tchars);
4b675d70 SL	199	#ifdef VMUNIX
	200	ioctl(0, TIOCSETD, (char *)&disc);
	201	#endif
5f50159a BJ	202	}
	203
	204
	205	/*
	206	* return keyboard to normal mode
	207	*/
	208	unraw()
	209	{
4b675d70 SL	210	#ifdef VMUNIX
	211	ioctl(0, TIOCSETD, (char *)&odisc);
	212	#endif
	213	ioctl(0, TIOCSETP, (char *)&defarg);
	214	ioctl(0, TIOCSETC, (char *)&defchars);
5f50159a BJ	215	}
	216
	217	/*
	218	* Print string ``s'', then read a string
	219	* in from the terminal. Handles signals & allows use of
	220	* normal erase and kill characters.
	221	*/
	222	prompt(s, p)
	223	char *s;
	224	register char *p;
	225	{
	226	register char *b = p;
	227
	228	stoprompt = 0;
	229	signal(SIGINT, intprompt);
	230	signal(SIGQUIT, SIG_IGN);
	231	unraw();
	232	printf("%s", s);
	233	while ((p = getchar()) != EOF && p != '\n') {
	234	if (stoprompt)
	235	goto pbreak;
	236	p++;
	237	}
	238	*p = '\0';
	239	pbreak:
	240	raw();
	241	signal(SIGINT, SIG_DFL);
	242	signal(SIGQUIT,SIG_DFL);
	243	return(stoprompt \|\| p == b);
	244	}
	245
	246	/*
	247	* Interrupt service routine during prompting
	248	*/
	249	intprompt()
	250	{
	251	signal(SIGINT, SIG_IGN);
	252	stoprompt = 1;
	253	printf("\r\n");
	254	}
	255
	256	/*
	257	* **TIPIN TIPIN**
	258	*/
	259	tipin()
	260	{
	261	char gch, bol = 1;
	262
388a70dc SL	263	/*
	264	* Kinda klugey here...
	265	* check for scripting being turned on from the .tiprc file,
	266	* but be careful about just using setscript(), as we may
	267	* send a SIGEMT before tipout has a chance to set up catching
	268	* it; so wait a second, then setscript()
	269	*/
	270	if (boolean(value(SCRIPT))) {
	271	sleep(1);
	272	setscript();
	273	}
	274
5f50159a BJ	275	while (1) {
	276	gch = getchar()&0177;
	277	if ((gch == character(value(ESCAPE))) && bol) {
	278	if (!(gch = escape()))
	279	continue;
	280	} else if (gch == character(value(RAISECHAR))) {
	281	boolean(value(RAISE)) = !boolean(value(RAISE));
	282	printf("%s", ctrl(character(value(RAISECHAR))));
	283	continue;
	284	} else if (gch == '\r') {
	285	bol = 1;
	286	write(FD, &gch, 1);
	287	continue;
	288	} else if (gch == character(value(FORCE))) {
	289	printf("%s", ctrl(character(value(FORCE))));
	290	gch = getchar()&0177;
	291	}
	292	bol = any(gch, value(EOL));
	293	if (boolean(value(RAISE)) && islower(gch))
	294	toupper(gch);
	295	write(FD, &gch, 1);
	296	}
	297	}
	298
	299	/*
	300	* Escape handler --
	301	* called on recognition of ``escapec'' at the beginning of a line
	302	*/
	303	escape()
	304	{
	305	register char gch;
	306	register esctable_t *p;
	307	char c = character(value(ESCAPE));
	308	extern esctable_t etable[];
	309
	310	gch = (getchar()&0177);
	311	for (p = etable; p->e_char; p++)
	312	if (p->e_char == gch) {
	313	if ((p->e_flags&PRIV) && getuid())
	314	continue;
	315	printf("%s", ctrl(c));
	316	(*p->e_func)(gch);
	317	return(0);
	318	}
62f62be8 SL	319	/* ESCAPE ESCAPE forces ESCAPE */
	320	if (c != gch)
	321	write(FD, &c, 1);
5f50159a BJ	322	return(gch);
	323	}
	324
	325	speed(n)
	326	{
	327	register int *p;
	328
	329	for (p = bauds; *p != -1; p++)
	330	if (*p == n)
	331	return(p-bauds);
	332	return(NULL);
	333	}
	334
	335	any(c, p)
	336	register char c, *p;
	337	{
	338	while (*p)
	339	if (*p++ == c)
	340	return(1);
	341	return(0);
	342	}
	343
	344	size(s)
	345	register char *s;
	346	{
	347	register int i = 0;
	348
	349	while (*s++) i++;
	350	return(i);
	351	}
	352
	353	char *
	354	interp(s)
	355	register char *s;
	356	{
	357	static char buf[256];
	358	register char p = buf, c, q;
	359
	360	while (c = *s++) {
	361	for (q = "\nn\rr\tt\ff\033E\bb"; *q; q++)
	362	if (*q++ == c) {
	363	p++ = '\\'; p++ = *q;
	364	goto next;
	365	}
	366	if (c < 040) {
	367	p++ = '^'; p++ = c + 'A'-1;
	368	} else if (c == 0177) {
	369	p++ = '^'; p++ = '?';
	370	} else
	371	*p++ = c;
	372	next:
	373	;
	374	}
	375	*p = '\0';
	376	return(buf);
	377	}
	378
	379	char *
	380	ctrl(c)
	381	char c;
	382	{
	383	static char s[3];
	384
	385	if (c < 040 \|\| c == 0177) {
386	s[0] = '^';
387	s[1] = c == 0177 ? '?' : c+'A'-1;
388	s[2] = '\0';
389	} else {
390	s[0] = c;
391	s[1] = '\0';
392	}
393	return(s);
394	}
395
396	/*
397	* Help command
398	*/
399	help(c)
400	char c;
401	{
402	register esctable_t *p;
403	extern esctable_t etable[];
404
405	printf("%c\r\n", c);
406	for (p = etable; p->e_char; p++) {
407	if ((p->e_flags&PRIV) && getuid())
408	continue;
409	printf("%2s", ctrl(character(value(ESCAPE))));
410	printf("%-2s %c %s\r\n", ctrl(p->e_char),
411	p->e_flags&EXP ? '*': ' ', p->e_help);
412	}
413	}
4b675d70 SL	414
	415	/*
	416	* Set up the "remote" tty's state
	417	*/
	418	static
	419	ttysetup(speed)
	420	{
	421	#ifdef VMUNIX
	422	unsigned bits = LDECCTQ;
	423	#endif
	424
	425	arg.sg_ispeed = arg.sg_ospeed = speed;
	426	arg.sg_flags = TANDEM\|RAW;
	427	ioctl(FD, TIOCSETP, (char *)&arg);
	428	#ifdef VMUNIX
	429	ioctl(FD, TIOCLBIS, (char *)&bits);
	430	#endif
	431	}