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

/*	tip.c	4.3	81/05/18	*/
/*
 * 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
 */

#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
};

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

main(argc, argv)
char *argv[];
{
	char *system = NOSTR;
	register int i;
#ifdef VMUNIX
	int disc;
#endif
	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 ((arg.sg_ispeed = speed(number(value(BAUDRATE)))) == NULL) {
		printf("tip: bad baud rate %d\n", number(value(BAUDRATE)));
		delock(uucplock);
		exit(3);
	}
	arg.sg_ospeed = arg.sg_ispeed;
	/*
	 * NOTE that remote side runs in TANDEM mode,
	 *  if the host doesn't honor X-ON/X-OFF with default
	 *  start/stop chars, the remote description must be
	 *  extended and tchars will have to be set up here.
	 * If the host doesn't honor TANDEM mode, then watch
	 *  out, as you'll get garbage.
	 */
	arg.sg_flags = RAW | TANDEM;
	ioctl(FD, TIOCSETP, &arg);

	ioctl(0, TIOCGETP, &defarg);	/* store initial status */
	ioctl(0, TIOCGETC, &defchars);
	arg = defarg;
	arg.sg_flags = ANYP | CBREAK;
	tchars = defchars;
	tchars.t_intrc = tchars.t_quitc = -1;

	if (p = connect()) {
		printf("\07%s\n[EOT]\n", p);
		delock(uucplock);
		exit(1);
	}
	write(1, "\07connected\n", 11);
	raw();
#ifdef VMUNIX
	ioctl(0, TIOCGETD, (char *)&odisc);
	disc = OTTYDISC;
	ioctl(0, TIOCSETD, (char *)&disc);
#endif
	pipe(fildes); pipe(repdes);
	signal(SIGALRM, timeout);
	if (pid = fork())
		tipin();
	else
		tipout();
	/*NOTREACHED*/
}

static
cleanup()
{
	delock(uucplock);
	exit(0);
}

/*
 * put the controlling keyboard into raw mode
 */
raw()
{
	ioctl(0, TIOCSETP, &arg);
	ioctl(0, TIOCSETC, &tchars);
}


/*
 * return keyboard to normal mode
 */
unraw()
{
	ioctl(0, TIOCSETP, &defarg);
	ioctl(0, TIOCSETC, &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);
		}

	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);
	}
}
Commit	Line	Data
388a70dc	1	/* tip.c 4.3 81/05/18 */
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
	46	*/
	47
	48	#include "tip.h"
	49
	50	/*
	51	* Baud rate mapping table
	52	*/
	53	int bauds[] = {
	54	0, 50, 75, 110, 134, 150, 200, 300, 600,
	55	1200, 1800, 2400, 4800, 9600, 19200, -1
	56	};
	57
	58	int intprompt();
	59	int timeout();
	60	static int cleanup();
	61
	62	main(argc, argv)
	63	char *argv[];
	64	{
	65	char *system = NOSTR;
66	register int i;
67	#ifdef VMUNIX
68	int disc;
69	#endif
70	char *p;
71
72	if (argc > 4) {
73	fprintf(stderr, "usage: tip [-v] [-speed] [system-name]\n");
74	exit(1);
75	}
76	if (!isatty(0)) {
77	fprintf(stderr, "tip: must be interactive\n");
78	exit(1);
79	}
80	if (argc > 1 && argv[argc-1][0] != '-')
81	system = argv[argc-1]; /* always last item */
82	signal(SIGINT, cleanup);
83	signal(SIGQUIT, cleanup);
84	signal(SIGHUP, cleanup);
85	signal(SIGTERM, cleanup);
86	if ((i = hunt(system)) == 0) {
87	printf("all ports busy\n");
88	exit(3);
89	}
90	if (i == -1) {
91	printf("link down\n");
92	exit(3);
93	}
eaa86232	94	setbuf(stdout, NULL);
5f50159a BJ	95	loginit();
	96	/*
	97	* Now that we have the logfile and the ACU open
	98	* return to the real uid and gid. These things will
	99	* be closed on exit. Note that we can't run as root,
	100	* because locking mechanism on the tty and the accounting
	101	* will be bypassed.
	102	*/
	103	setuid(getuid());
	104	setgid(getgid());
	105	for (i = 1; i < argc-1; i++)
	106	if (equal(argv[i], "-v"))
	107	vflag++;
	108	/*
	109	* Kludge, their's no easy way to get the initialization
	110	* in the right order, so force it here
	111	*/
	112	if ((PH = getenv("PHONES")) == NOSTR)
	113	PH = "/etc/phones";
	114	vinit(); /* init variables */
	115	for (i = 1; i < argc-1; i++)
	116	if (argv[i][0] == '-' && argv[i][1] != 'v') {
	117	if (isnum(argv[i][1]))
	118	number(value(BAUDRATE)) = atoi(&argv[i][1]);
	119	else
	120	printf("%s: unknown option\n", argv[i]);
	121	}
	122	if ((arg.sg_ispeed = speed(number(value(BAUDRATE)))) == NULL) {
	123	printf("tip: bad baud rate %d\n", number(value(BAUDRATE)));
	124	delock(uucplock);
	125	exit(3);
	126	}
	127	arg.sg_ospeed = arg.sg_ispeed;
	128	/*
	129	* NOTE that remote side runs in TANDEM mode,
	130	* if the host doesn't honor X-ON/X-OFF with default
	131	* start/stop chars, the remote description must be
	132	* extended and tchars will have to be set up here.
	133	* If the host doesn't honor TANDEM mode, then watch
	134	* out, as you'll get garbage.
	135	*/
	136	arg.sg_flags = RAW \| TANDEM;
	137	ioctl(FD, TIOCSETP, &arg);
	138
	139	ioctl(0, TIOCGETP, &defarg); /* store initial status */
	140	ioctl(0, TIOCGETC, &defchars);
	141	arg = defarg;
	142	arg.sg_flags = ANYP \| CBREAK;
	143	tchars = defchars;
	144	tchars.t_intrc = tchars.t_quitc = -1;
	145
	146	if (p = connect()) {
	147	printf("\07%s\n[EOT]\n", p);
	148	delock(uucplock);
	149	exit(1);
	150	}
	151	write(1, "\07connected\n", 11);
	152	raw();
	153	#ifdef VMUNIX
	154	ioctl(0, TIOCGETD, (char *)&odisc);
	155	disc = OTTYDISC;
	156	ioctl(0, TIOCSETD, (char *)&disc);
	157	#endif
	158	pipe(fildes); pipe(repdes);
159	signal(SIGALRM, timeout);
160	if (pid = fork())
161	tipin();
162	else
163	tipout();
164	/NOTREACHED/
165	}
166
167	static
168	cleanup()
169	{
170	delock(uucplock);
171	exit(0);
172	}
173
174	/*
175	* put the controlling keyboard into raw mode
176	*/
177	raw()
178	{
179	ioctl(0, TIOCSETP, &arg);
180	ioctl(0, TIOCSETC, &tchars);
181	}
182
183
184	/*
185	* return keyboard to normal mode
186	*/
187	unraw()
188	{
189	ioctl(0, TIOCSETP, &defarg);
190	ioctl(0, TIOCSETC, &defchars);
191	}
192
193	/*
194	* Print string ``s'', then read a string
195	* in from the terminal. Handles signals & allows use of
196	* normal erase and kill characters.
197	*/
198	prompt(s, p)
199	char *s;
200	register char *p;
201	{
202	register char *b = p;
203
204	stoprompt = 0;
205	signal(SIGINT, intprompt);
206	signal(SIGQUIT, SIG_IGN);
207	unraw();
208	printf("%s", s);
209	while ((p = getchar()) != EOF && p != '\n') {
210	if (stoprompt)
211	goto pbreak;
212	p++;
213	}
214	*p = '\0';
215	pbreak:
216	raw();
217	signal(SIGINT, SIG_DFL);
218	signal(SIGQUIT,SIG_DFL);
219	return(stoprompt \|\| p == b);
220	}
221
222	/*
223	* Interrupt service routine during prompting
224	*/
225	intprompt()
226	{
227	signal(SIGINT, SIG_IGN);
228	stoprompt = 1;
229	printf("\r\n");
230	}
231
232	/*
233	* **TIPIN TIPIN**
234	*/
235	tipin()
236	{
237	char gch, bol = 1;
238
388a70dc SL	239	/*
	240	* Kinda klugey here...
	241	* check for scripting being turned on from the .tiprc file,
	242	* but be careful about just using setscript(), as we may
	243	* send a SIGEMT before tipout has a chance to set up catching
	244	* it; so wait a second, then setscript()
	245	*/
	246	if (boolean(value(SCRIPT))) {
	247	sleep(1);
	248	setscript();
	249	}
	250
5f50159a BJ	251	while (1) {
	252	gch = getchar()&0177;
	253	if ((gch == character(value(ESCAPE))) && bol) {
	254	if (!(gch = escape()))
	255	continue;
	256	} else if (gch == character(value(RAISECHAR))) {
	257	boolean(value(RAISE)) = !boolean(value(RAISE));
	258	printf("%s", ctrl(character(value(RAISECHAR))));
	259	continue;
	260	} else if (gch == '\r') {
	261	bol = 1;
	262	write(FD, &gch, 1);
	263	continue;
	264	} else if (gch == character(value(FORCE))) {
	265	printf("%s", ctrl(character(value(FORCE))));
	266	gch = getchar()&0177;
	267	}
	268	bol = any(gch, value(EOL));
	269	if (boolean(value(RAISE)) && islower(gch))
	270	toupper(gch);
	271	write(FD, &gch, 1);
	272	}
	273	}
	274
	275	/*
	276	* Escape handler --
	277	* called on recognition of ``escapec'' at the beginning of a line
	278	*/
	279	escape()
	280	{
	281	register char gch;
	282	register esctable_t *p;
	283	char c = character(value(ESCAPE));
	284	extern esctable_t etable[];
	285
	286	gch = (getchar()&0177);
	287	for (p = etable; p->e_char; p++)
	288	if (p->e_char == gch) {
	289	if ((p->e_flags&PRIV) && getuid())
	290	continue;
	291	printf("%s", ctrl(c));
	292	(*p->e_func)(gch);
	293	return(0);
	294	}
	295
	296	write(FD, &c, 1);
	297	return(gch);
	298	}
	299
	300	speed(n)
	301	{
	302	register int *p;
	303
	304	for (p = bauds; *p != -1; p++)
	305	if (*p == n)
	306	return(p-bauds);
	307	return(NULL);
	308	}
	309
	310	any(c, p)
	311	register char c, *p;
	312	{
	313	while (*p)
	314	if (*p++ == c)
315	return(1);
316	return(0);
317	}
318
319	size(s)
320	register char *s;
321	{
322	register int i = 0;
323
324	while (*s++) i++;
325	return(i);
326	}
327
328	char *
329	interp(s)
330	register char *s;
331	{
332	static char buf[256];
333	register char p = buf, c, q;
334
335	while (c = *s++) {
336	for (q = "\nn\rr\tt\ff\033E\bb"; *q; q++)
337	if (*q++ == c) {
338	p++ = '\\'; p++ = *q;
339	goto next;
340	}
341	if (c < 040) {
342	p++ = '^'; p++ = c + 'A'-1;
343	} else if (c == 0177) {
344	p++ = '^'; p++ = '?';
345	} else
346	*p++ = c;
347	next:
348	;
349	}
350	*p = '\0';
351	return(buf);
352	}
353
354	char *
355	ctrl(c)
356	char c;
357	{
358	static char s[3];
359
360	if (c < 040 \|\| c == 0177) {
361	s[0] = '^';
362	s[1] = c == 0177 ? '?' : c+'A'-1;
363	s[2] = '\0';
364	} else {
365	s[0] = c;
366	s[1] = '\0';
367	}
368	return(s);
369	}
370
371	/*
372	* Help command
373	*/
374	help(c)
375	char c;
376	{
377	register esctable_t *p;
378	extern esctable_t etable[];
379
380	printf("%c\r\n", c);
381	for (p = etable; p->e_char; p++) {
382	if ((p->e_flags&PRIV) && getuid())
383	continue;
384	printf("%2s", ctrl(character(value(ESCAPE))));
385	printf("%-2s %c %s\r\n", ctrl(p->e_char),
386	p->e_flags&EXP ? '*': ' ', p->e_help);
387	}
388	}