1fa92e883SRuslan Ermilov /* $OpenBSD: tipout.c,v 1.18 2006/05/31 07:03:08 jason Exp $ */
20f3bdf5dSMark Murray /* $NetBSD: tipout.c,v 1.5 1996/12/29 10:34:12 cgd Exp $ */
30f3bdf5dSMark Murray
48a16b7a1SPedro F. Giffuni /*-
58a16b7a1SPedro F. Giffuni * SPDX-License-Identifier: BSD-3-Clause
68a16b7a1SPedro F. Giffuni *
718cc36fbSJordan K. Hubbard * Copyright (c) 1983, 1993
818cc36fbSJordan K. Hubbard * The Regents of the University of California. All rights reserved.
918cc36fbSJordan K. Hubbard *
1018cc36fbSJordan K. Hubbard * Redistribution and use in source and binary forms, with or without
1118cc36fbSJordan K. Hubbard * modification, are permitted provided that the following conditions
1218cc36fbSJordan K. Hubbard * are met:
1318cc36fbSJordan K. Hubbard * 1. Redistributions of source code must retain the above copyright
1418cc36fbSJordan K. Hubbard * notice, this list of conditions and the following disclaimer.
1518cc36fbSJordan K. Hubbard * 2. Redistributions in binary form must reproduce the above copyright
1618cc36fbSJordan K. Hubbard * notice, this list of conditions and the following disclaimer in the
1718cc36fbSJordan K. Hubbard * documentation and/or other materials provided with the distribution.
18fa92e883SRuslan Ermilov * 3. Neither the name of the University nor the names of its contributors
1918cc36fbSJordan K. Hubbard * may be used to endorse or promote products derived from this software
2018cc36fbSJordan K. Hubbard * without specific prior written permission.
2118cc36fbSJordan K. Hubbard *
2218cc36fbSJordan K. Hubbard * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
2318cc36fbSJordan K. Hubbard * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
2418cc36fbSJordan K. Hubbard * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
2518cc36fbSJordan K. Hubbard * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
2618cc36fbSJordan K. Hubbard * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
2718cc36fbSJordan K. Hubbard * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
2818cc36fbSJordan K. Hubbard * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2918cc36fbSJordan K. Hubbard * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
3018cc36fbSJordan K. Hubbard * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
3118cc36fbSJordan K. Hubbard * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
3218cc36fbSJordan K. Hubbard * SUCH DAMAGE.
3318cc36fbSJordan K. Hubbard */
3418cc36fbSJordan K. Hubbard
3518cc36fbSJordan K. Hubbard #include "tip.h"
36fa92e883SRuslan Ermilov
3718cc36fbSJordan K. Hubbard /*
3818cc36fbSJordan K. Hubbard * tip
3918cc36fbSJordan K. Hubbard *
4018cc36fbSJordan K. Hubbard * lower fork of tip -- handles passive side
4118cc36fbSJordan K. Hubbard * reading from the remote host
4218cc36fbSJordan K. Hubbard */
4318cc36fbSJordan K. Hubbard
4418cc36fbSJordan K. Hubbard static jmp_buf sigbuf;
4518cc36fbSJordan K. Hubbard
46fa92e883SRuslan Ermilov static void intIOT(int);
47fa92e883SRuslan Ermilov static void intEMT(int);
48fa92e883SRuslan Ermilov static void intTERM(int);
49fa92e883SRuslan Ermilov static void intSYS(int);
50fa92e883SRuslan Ermilov
5118cc36fbSJordan K. Hubbard /*
5218cc36fbSJordan K. Hubbard * TIPOUT wait state routine --
5318cc36fbSJordan K. Hubbard * sent by TIPIN when it wants to posses the remote host
5418cc36fbSJordan K. Hubbard */
55fa92e883SRuslan Ermilov /*ARGSUSED*/
56fa92e883SRuslan Ermilov static void
intIOT(int signo)57fa92e883SRuslan Ermilov intIOT(int signo)
5818cc36fbSJordan K. Hubbard {
5918cc36fbSJordan K. Hubbard write(repdes[1],&ccc,1);
6018cc36fbSJordan K. Hubbard read(fildes[0], &ccc,1);
6118cc36fbSJordan K. Hubbard longjmp(sigbuf, 1);
6218cc36fbSJordan K. Hubbard }
6318cc36fbSJordan K. Hubbard
6418cc36fbSJordan K. Hubbard /*
6518cc36fbSJordan K. Hubbard * Scripting command interpreter --
6618cc36fbSJordan K. Hubbard * accepts script file name over the pipe and acts accordingly
6718cc36fbSJordan K. Hubbard */
68fa92e883SRuslan Ermilov /*ARGSUSED*/
69fa92e883SRuslan Ermilov static void
intEMT(int signo)70fa92e883SRuslan Ermilov intEMT(int signo)
7118cc36fbSJordan K. Hubbard {
7218cc36fbSJordan K. Hubbard char c, line[256];
730f3bdf5dSMark Murray char *pline = line;
7418cc36fbSJordan K. Hubbard char reply;
7518cc36fbSJordan K. Hubbard
7618cc36fbSJordan K. Hubbard read(fildes[0], &c, 1);
7707bb01e3SRuslan Ermilov while (c != '\n' && (size_t)(pline - line) < sizeof(line)) {
7818cc36fbSJordan K. Hubbard *pline++ = c;
7918cc36fbSJordan K. Hubbard read(fildes[0], &c, 1);
8018cc36fbSJordan K. Hubbard }
8118cc36fbSJordan K. Hubbard *pline = '\0';
8218cc36fbSJordan K. Hubbard if (boolean(value(SCRIPT)) && fscript != NULL)
8318cc36fbSJordan K. Hubbard fclose(fscript);
8418cc36fbSJordan K. Hubbard if (pline == line) {
850f3bdf5dSMark Murray setboolean(value(SCRIPT), FALSE);
8618cc36fbSJordan K. Hubbard reply = 'y';
8718cc36fbSJordan K. Hubbard } else {
8818cc36fbSJordan K. Hubbard if ((fscript = fopen(line, "a")) == NULL)
8918cc36fbSJordan K. Hubbard reply = 'n';
9018cc36fbSJordan K. Hubbard else {
9118cc36fbSJordan K. Hubbard reply = 'y';
920f3bdf5dSMark Murray setboolean(value(SCRIPT), TRUE);
9318cc36fbSJordan K. Hubbard }
9418cc36fbSJordan K. Hubbard }
9518cc36fbSJordan K. Hubbard write(repdes[1], &reply, 1);
9618cc36fbSJordan K. Hubbard longjmp(sigbuf, 1);
9718cc36fbSJordan K. Hubbard }
9818cc36fbSJordan K. Hubbard
99fa92e883SRuslan Ermilov static void
intTERM(int signo)100fa92e883SRuslan Ermilov intTERM(int signo)
10118cc36fbSJordan K. Hubbard {
10218cc36fbSJordan K. Hubbard if (boolean(value(SCRIPT)) && fscript != NULL)
10318cc36fbSJordan K. Hubbard fclose(fscript);
104fa92e883SRuslan Ermilov if (signo && tipin_pid)
105fa92e883SRuslan Ermilov kill(tipin_pid, signo);
10618cc36fbSJordan K. Hubbard exit(0);
10718cc36fbSJordan K. Hubbard }
10818cc36fbSJordan K. Hubbard
109fa92e883SRuslan Ermilov /*ARGSUSED*/
110fa92e883SRuslan Ermilov static void
intSYS(int signo)111fa92e883SRuslan Ermilov intSYS(int signo)
11218cc36fbSJordan K. Hubbard {
1130f3bdf5dSMark Murray setboolean(value(BEAUTIFY), !boolean(value(BEAUTIFY)));
11418cc36fbSJordan K. Hubbard longjmp(sigbuf, 1);
11518cc36fbSJordan K. Hubbard }
11618cc36fbSJordan K. Hubbard
11718cc36fbSJordan K. Hubbard /*
11818cc36fbSJordan K. Hubbard * ****TIPOUT TIPOUT****
11918cc36fbSJordan K. Hubbard */
120804d2dabSPhilippe Charnier void
tipout(void)121fa92e883SRuslan Ermilov tipout(void)
12218cc36fbSJordan K. Hubbard {
12318cc36fbSJordan K. Hubbard char buf[BUFSIZ];
1240f3bdf5dSMark Murray char *cp;
125fa92e883SRuslan Ermilov ssize_t scnt;
126fa92e883SRuslan Ermilov size_t cnt;
1270f3bdf5dSMark Murray sigset_t mask, omask;
12818cc36fbSJordan K. Hubbard
12918cc36fbSJordan K. Hubbard signal(SIGINT, SIG_IGN);
13018cc36fbSJordan K. Hubbard signal(SIGQUIT, SIG_IGN);
13118cc36fbSJordan K. Hubbard signal(SIGEMT, intEMT); /* attention from TIPIN */
13218cc36fbSJordan K. Hubbard signal(SIGTERM, intTERM); /* time to go signal */
13318cc36fbSJordan K. Hubbard signal(SIGIOT, intIOT); /* scripting going on signal */
13418cc36fbSJordan K. Hubbard signal(SIGHUP, intTERM); /* for dial-ups */
13518cc36fbSJordan K. Hubbard signal(SIGSYS, intSYS); /* beautify toggle */
13618cc36fbSJordan K. Hubbard (void) setjmp(sigbuf);
1370f3bdf5dSMark Murray sigprocmask(SIG_BLOCK, NULL, &omask);
1380f3bdf5dSMark Murray for (;;) {
1390f3bdf5dSMark Murray sigprocmask(SIG_SETMASK, &omask, NULL);
140fa92e883SRuslan Ermilov scnt = read(FD, buf, BUFSIZ);
141fa92e883SRuslan Ermilov if (scnt <= 0) {
14218cc36fbSJordan K. Hubbard /* lost carrier */
14391505ba4SPoul-Henning Kamp if (scnt == 0 ||
14491505ba4SPoul-Henning Kamp (scnt < 0 && (errno == EIO || errno == ENXIO))) {
1450f3bdf5dSMark Murray sigemptyset(&mask);
1460f3bdf5dSMark Murray sigaddset(&mask, SIGTERM);
1470f3bdf5dSMark Murray sigprocmask(SIG_BLOCK, &mask, NULL);
14891505ba4SPoul-Henning Kamp intTERM(SIGHUP);
149662d0b8cSPoul-Henning Kamp /*NOTREACHED*/
15018cc36fbSJordan K. Hubbard }
15118cc36fbSJordan K. Hubbard continue;
15218cc36fbSJordan K. Hubbard }
153fa92e883SRuslan Ermilov cnt = scnt;
1540f3bdf5dSMark Murray sigemptyset(&mask);
1550f3bdf5dSMark Murray sigaddset(&mask, SIGEMT);
1560f3bdf5dSMark Murray sigaddset(&mask, SIGTERM);
1570f3bdf5dSMark Murray sigaddset(&mask, SIGIOT);
1580f3bdf5dSMark Murray sigaddset(&mask, SIGSYS);
1590f3bdf5dSMark Murray sigprocmask(SIG_BLOCK, &mask, NULL);
16018cc36fbSJordan K. Hubbard for (cp = buf; cp < buf + cnt; cp++)
1610f3bdf5dSMark Murray *cp &= STRIP_PAR;
162fa92e883SRuslan Ermilov write(STDOUT_FILENO, buf, cnt);
16318cc36fbSJordan K. Hubbard if (boolean(value(SCRIPT)) && fscript != NULL) {
16418cc36fbSJordan K. Hubbard if (!boolean(value(BEAUTIFY))) {
16518cc36fbSJordan K. Hubbard fwrite(buf, 1, cnt, fscript);
1669fc9ddeeSPoul-Henning Kamp } else {
16718cc36fbSJordan K. Hubbard for (cp = buf; cp < buf + cnt; cp++)
16818cc36fbSJordan K. Hubbard if ((*cp >= ' ' && *cp <= '~') ||
16918cc36fbSJordan K. Hubbard any(*cp, value(EXCEPTIONS)))
17018cc36fbSJordan K. Hubbard putc(*cp, fscript);
17118cc36fbSJordan K. Hubbard }
1729fc9ddeeSPoul-Henning Kamp for (cp = buf; cp < buf + cnt; cp++) {
1739fc9ddeeSPoul-Henning Kamp if (!isgraph(*cp)) {
1749fc9ddeeSPoul-Henning Kamp fflush(fscript);
1759fc9ddeeSPoul-Henning Kamp break;
1769fc9ddeeSPoul-Henning Kamp }
1779fc9ddeeSPoul-Henning Kamp }
1789fc9ddeeSPoul-Henning Kamp }
17918cc36fbSJordan K. Hubbard }
18018cc36fbSJordan K. Hubbard }
181