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

/*	tip.c	4.1	81/05/09	*/
/*
 * 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);
	}
	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;

	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
5f50159a BJ	1	/* tip.c 4.1 81/05/09 */
	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	}
94	loginit();
95	/*
96	* Now that we have the logfile and the ACU open
97	* return to the real uid and gid. These things will
98	* be closed on exit. Note that we can't run as root,
99	* because locking mechanism on the tty and the accounting
100	* will be bypassed.
101	*/
102	setuid(getuid());
103	setgid(getgid());
104	for (i = 1; i < argc-1; i++)
105	if (equal(argv[i], "-v"))
106	vflag++;
107	/*
108	* Kludge, their's no easy way to get the initialization
109	* in the right order, so force it here
110	*/
111	if ((PH = getenv("PHONES")) == NOSTR)
112	PH = "/etc/phones";
113	vinit(); /* init variables */
114	for (i = 1; i < argc-1; i++)
115	if (argv[i][0] == '-' && argv[i][1] != 'v') {
116	if (isnum(argv[i][1]))
117	number(value(BAUDRATE)) = atoi(&argv[i][1]);
118	else
119	printf("%s: unknown option\n", argv[i]);
120	}
121	if ((arg.sg_ispeed = speed(number(value(BAUDRATE)))) == NULL) {
122	printf("tip: bad baud rate %d\n", number(value(BAUDRATE)));
123	delock(uucplock);
124	exit(3);
125	}
126	arg.sg_ospeed = arg.sg_ispeed;
127	/*
128	* NOTE that remote side runs in TANDEM mode,
129	* if the host doesn't honor X-ON/X-OFF with default
130	* start/stop chars, the remote description must be
131	* extended and tchars will have to be set up here.
132	* If the host doesn't honor TANDEM mode, then watch
133	* out, as you'll get garbage.
134	*/
135	arg.sg_flags = RAW \| TANDEM;
136	ioctl(FD, TIOCSETP, &arg);
137
138	ioctl(0, TIOCGETP, &defarg); /* store initial status */
139	ioctl(0, TIOCGETC, &defchars);
140	arg = defarg;
141	arg.sg_flags = ANYP \| CBREAK;
142	tchars = defchars;
143	tchars.t_intrc = tchars.t_quitc = -1;
144
145	if (p = connect()) {
146	printf("\07%s\n[EOT]\n", p);
147	delock(uucplock);
148	exit(1);
149	}
150	write(1, "\07connected\n", 11);
151	raw();
152	#ifdef VMUNIX
153	ioctl(0, TIOCGETD, (char *)&odisc);
154	disc = OTTYDISC;
155	ioctl(0, TIOCSETD, (char *)&disc);
156	#endif
157	pipe(fildes); pipe(repdes);
158	signal(SIGALRM, timeout);
159	if (pid = fork())
160	tipin();
161	else
162	tipout();
163	/NOTREACHED/
164	}
165
166	static
167	cleanup()
168	{
169	delock(uucplock);
170	exit(0);
171	}
172
173	/*
174	* put the controlling keyboard into raw mode
175	*/
176	raw()
177	{
178	ioctl(0, TIOCSETP, &arg);
179	ioctl(0, TIOCSETC, &tchars);
180	}
181
182
183	/*
184	* return keyboard to normal mode
185	*/
186	unraw()
187	{
188	ioctl(0, TIOCSETP, &defarg);
189	ioctl(0, TIOCSETC, &defchars);
190	}
191
192	/*
193	* Print string ``s'', then read a string
194	* in from the terminal. Handles signals & allows use of
195	* normal erase and kill characters.
196	*/
197	prompt(s, p)
198	char *s;
199	register char *p;
200	{
201	register char *b = p;
202
203	stoprompt = 0;
204	signal(SIGINT, intprompt);
205	signal(SIGQUIT, SIG_IGN);
206	unraw();
207	printf("%s", s);
208	while ((p = getchar()) != EOF && p != '\n') {
209	if (stoprompt)
210	goto pbreak;
211	p++;
212	}
213	*p = '\0';
214	pbreak:
215	raw();
216	signal(SIGINT, SIG_DFL);
217	signal(SIGQUIT,SIG_DFL);
218	return(stoprompt \|\| p == b);
219	}
220
221	/*
222	* Interrupt service routine during prompting
223	*/
224	intprompt()
225	{
226	signal(SIGINT, SIG_IGN);
227	stoprompt = 1;
228	printf("\r\n");
229	}
230
231	/*
232	* **TIPIN TIPIN**
233	*/
234	tipin()
235	{
236	char gch, bol = 1;
237
238	while (1) {
239	gch = getchar()&0177;
240	if ((gch == character(value(ESCAPE))) && bol) {
241	if (!(gch = escape()))
242	continue;
243	} else if (gch == character(value(RAISECHAR))) {
244	boolean(value(RAISE)) = !boolean(value(RAISE));
245	printf("%s", ctrl(character(value(RAISECHAR))));
246	continue;
247	} else if (gch == '\r') {
248	bol = 1;
249	write(FD, &gch, 1);
250	continue;
251	} else if (gch == character(value(FORCE))) {
252	printf("%s", ctrl(character(value(FORCE))));
253	gch = getchar()&0177;
254	}
255	bol = any(gch, value(EOL));
256	if (boolean(value(RAISE)) && islower(gch))
257	toupper(gch);
258	write(FD, &gch, 1);
259	}
260	}
261
262	/*
263	* Escape handler --
264	* called on recognition of ``escapec'' at the beginning of a line
265	*/
266	escape()
267	{
268	register char gch;
269	register esctable_t *p;
270	char c = character(value(ESCAPE));
271	extern esctable_t etable[];
272
273	gch = (getchar()&0177);
274	for (p = etable; p->e_char; p++)
275	if (p->e_char == gch) {
276	if ((p->e_flags&PRIV) && getuid())
277	continue;
278	printf("%s", ctrl(c));
279	(*p->e_func)(gch);
280	return(0);
281	}
282
283	write(FD, &c, 1);
284	return(gch);
285	}
286
287	speed(n)
288	{
289	register int *p;
290
291	for (p = bauds; *p != -1; p++)
292	if (*p == n)
293	return(p-bauds);
294	return(NULL);
295	}
296
297	any(c, p)
298	register char c, *p;
299	{
300	while (*p)
301	if (*p++ == c)
302	return(1);
303	return(0);
304	}
305
306	size(s)
307	register char *s;
308	{
309	register int i = 0;
310
311	while (*s++) i++;
312	return(i);
313	}
314
315	char *
316	interp(s)
317	register char *s;
318	{
319	static char buf[256];
320	register char p = buf, c, q;
321
322	while (c = *s++) {
323	for (q = "\nn\rr\tt\ff\033E\bb"; *q; q++)
324	if (*q++ == c) {
325	p++ = '\\'; p++ = *q;
326	goto next;
327	}
328	if (c < 040) {
329	p++ = '^'; p++ = c + 'A'-1;
330	} else if (c == 0177) {
331	p++ = '^'; p++ = '?';
332	} else
333	*p++ = c;
334	next:
335	;
336	}
337	*p = '\0';
338	return(buf);
339	}
340
341	char *
342	ctrl(c)
343	char c;
344	{
345	static char s[3];
346
347	if (c < 040 \|\| c == 0177) {
348	s[0] = '^';
349	s[1] = c == 0177 ? '?' : c+'A'-1;
350	s[2] = '\0';
351	} else {
352	s[0] = c;
353	s[1] = '\0';
354	}
355	return(s);
356	}
357
358	/*
359	* Help command
360	*/
361	help(c)
362	char c;
363	{
364	register esctable_t *p;
365	extern esctable_t etable[];
366
367	printf("%c\r\n", c);
368	for (p = etable; p->e_char; p++) {
369	if ((p->e_flags&PRIV) && getuid())
370	continue;
371	printf("%2s", ctrl(character(value(ESCAPE))));
372	printf("%-2s %c %s\r\n", ctrl(p->e_char),
373	p->e_flags&EXP ? '*': ' ', p->e_help);
374	}
375	}