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

/*
 * Copyright (c) 1983 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
static char sccsid[] = "@(#)tipout.c	5.4 (Berkeley) 3/2/91";
#endif /* not lint */

#include "tip.h"
/*
 * tip
 *
 * lower fork of tip -- handles passive side
 *  reading from the remote host
 */

static	jmp_buf sigbuf;

/*
 * TIPOUT wait state routine --
 *   sent by TIPIN when it wants to posses the remote host
 */
void
intIOT()
{

	write(repdes[1],&ccc,1);
	read(fildes[0], &ccc,1);
	longjmp(sigbuf, 1);
}

/*
 * Scripting command interpreter --
 *  accepts script file name over the pipe and acts accordingly
 */
void
intEMT()
{
	char c, line[256];
	register char *pline = line;
	char reply;

	read(fildes[0], &c, 1);
	while (c != '\n') {
		*pline++ = c;
		read(fildes[0], &c, 1);
	}
	*pline = '\0';
	if (boolean(value(SCRIPT)) && fscript != NULL)
		fclose(fscript);
	if (pline == line) {
		boolean(value(SCRIPT)) = FALSE;
		reply = 'y';
	} else {
		if ((fscript = fopen(line, "a")) == NULL)
			reply = 'n';
		else {
			reply = 'y';
			boolean(value(SCRIPT)) = TRUE;
		}
	}
	write(repdes[1], &reply, 1);
	longjmp(sigbuf, 1);
}

void
intTERM()
{

	if (boolean(value(SCRIPT)) && fscript != NULL)
		fclose(fscript);
	exit(0);
}

void
intSYS()
{

	boolean(value(BEAUTIFY)) = !boolean(value(BEAUTIFY));
	longjmp(sigbuf, 1);
}

/*
 * ****TIPOUT   TIPOUT****
 */
tipout()
{
	char buf[BUFSIZ];
	register char *cp;
	register int cnt;
	extern int errno;
	int omask;

	signal(SIGINT, SIG_IGN);
	signal(SIGQUIT, SIG_IGN);
	signal(SIGEMT, intEMT);		/* attention from TIPIN */
	signal(SIGTERM, intTERM);	/* time to go signal */
	signal(SIGIOT, intIOT);		/* scripting going on signal */
	signal(SIGHUP, intTERM);	/* for dial-ups */
	signal(SIGSYS, intSYS);		/* beautify toggle */
	(void) setjmp(sigbuf);
	for (omask = 0;; sigsetmask(omask)) {
		cnt = read(FD, buf, BUFSIZ);
		if (cnt <= 0) {
			/* lost carrier */
			if ((cnt < 0 && errno == EIO) || (cnt == 0)) {
				sigblock(sigmask(SIGTERM));
				intTERM();
				/*NOTREACHED*/
			}
			continue;
		}
#define	ALLSIGS	sigmask(SIGEMT)|sigmask(SIGTERM)|sigmask(SIGIOT)|sigmask(SIGSYS)
		omask = sigblock(ALLSIGS);
		for (cp = buf; cp < buf + cnt; cp++)
			*cp &= 0177;
		write(1, buf, cnt);
		if (boolean(value(SCRIPT)) && fscript != NULL) {
			if (!boolean(value(BEAUTIFY))) {
				fwrite(buf, 1, cnt, fscript);
				continue;
			}
			for (cp = buf; cp < buf + cnt; cp++)
				if ((*cp >= ' ' && *cp <= '~') ||
				    any(*cp, value(EXCEPTIONS)))
					putc(*cp, fscript);
		}
	}
}
Commit	Line	Data
15637ed4 RG	1	/*
	2	* Copyright (c) 1983 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*/
	33
	34	#ifndef lint
	35	static char sccsid[] = "@(#)tipout.c 5.4 (Berkeley) 3/2/91";
	36	#endif /* not lint */
	37
	38	#include "tip.h"
	39	/*
	40	* tip
	41	*
	42	* lower fork of tip -- handles passive side
	43	* reading from the remote host
	44	*/
	45
	46	static jmp_buf sigbuf;
	47
	48	/*
	49	* TIPOUT wait state routine --
	50	* sent by TIPIN when it wants to posses the remote host
	51	*/
	52	void
	53	intIOT()
	54	{
	55
	56	write(repdes[1],&ccc,1);
	57	read(fildes[0], &ccc,1);
	58	longjmp(sigbuf, 1);
	59	}
	60
	61	/*
	62	* Scripting command interpreter --
	63	* accepts script file name over the pipe and acts accordingly
	64	*/
65	void
66	intEMT()
67	{
68	char c, line[256];
69	register char *pline = line;
70	char reply;
71
72	read(fildes[0], &c, 1);
73	while (c != '\n') {
74	*pline++ = c;
75	read(fildes[0], &c, 1);
76	}
77	*pline = '\0';
78	if (boolean(value(SCRIPT)) && fscript != NULL)
79	fclose(fscript);
80	if (pline == line) {
81	boolean(value(SCRIPT)) = FALSE;
82	reply = 'y';
83	} else {
84	if ((fscript = fopen(line, "a")) == NULL)
85	reply = 'n';
86	else {
87	reply = 'y';
88	boolean(value(SCRIPT)) = TRUE;
89	}
90	}
91	write(repdes[1], &reply, 1);
92	longjmp(sigbuf, 1);
93	}
94
95	void
96	intTERM()
97	{
98
99	if (boolean(value(SCRIPT)) && fscript != NULL)
100	fclose(fscript);
101	exit(0);
102	}
103
104	void
105	intSYS()
106	{
107
108	boolean(value(BEAUTIFY)) = !boolean(value(BEAUTIFY));
109	longjmp(sigbuf, 1);
110	}
111
112	/*
113	* **TIPOUT TIPOUT**
114	*/
115	tipout()
116	{
117	char buf[BUFSIZ];
118	register char *cp;
119	register int cnt;
120	extern int errno;
121	int omask;
122
123	signal(SIGINT, SIG_IGN);
124	signal(SIGQUIT, SIG_IGN);
125	signal(SIGEMT, intEMT); /* attention from TIPIN */
126	signal(SIGTERM, intTERM); /* time to go signal */
127	signal(SIGIOT, intIOT); /* scripting going on signal */
128	signal(SIGHUP, intTERM); /* for dial-ups */
129	signal(SIGSYS, intSYS); /* beautify toggle */
130	(void) setjmp(sigbuf);
131	for (omask = 0;; sigsetmask(omask)) {
132	cnt = read(FD, buf, BUFSIZ);
133	if (cnt <= 0) {
134	/* lost carrier */
78ed81a3	135	if ((cnt < 0 && errno == EIO) \|\| (cnt == 0)) {
15637ed4 RG	136	sigblock(sigmask(SIGTERM));
	137	intTERM();
	138	/NOTREACHED/
	139	}
	140	continue;
	141	}
	142	#define ALLSIGS sigmask(SIGEMT)\|sigmask(SIGTERM)\|sigmask(SIGIOT)\|sigmask(SIGSYS)
	143	omask = sigblock(ALLSIGS);
	144	for (cp = buf; cp < buf + cnt; cp++)
	145	*cp &= 0177;
	146	write(1, buf, cnt);
	147	if (boolean(value(SCRIPT)) && fscript != NULL) {
	148	if (!boolean(value(BEAUTIFY))) {
	149	fwrite(buf, 1, cnt, fscript);
	150	continue;
	151	}
	152	for (cp = buf; cp < buf + cnt; cp++)
	153	if ((cp >= ' ' && cp <= '~') \|\|
	154	any(*cp, value(EXCEPTIONS)))
	155	putc(*cp, fscript);
	156	}
	157	}
	158	}