1 /* $OpenBSD: tipout.c,v 1.18 2006/05/31 07:03:08 jason Exp $ */
2 /* $NetBSD: tipout.c,v 1.5 1996/12/29 10:34:12 cgd Exp $ */
5 * Copyright (c) 1983, 1993
6 * The Regents of the University of California. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
38 static char sccsid[] = "@(#)tipout.c 8.1 (Berkeley) 6/6/93";
39 static const char rcsid[] = "$OpenBSD: tipout.c,v 1.18 2006/05/31 07:03:08 jason Exp $";
48 * lower fork of tip -- handles passive side
49 * reading from the remote host
52 static jmp_buf sigbuf;
54 static void intIOT(int);
55 static void intEMT(int);
56 static void intTERM(int);
57 static void intSYS(int);
60 * TIPOUT wait state routine --
61 * sent by TIPIN when it wants to posses the remote host
67 write(repdes[1],&ccc,1);
68 read(fildes[0], &ccc,1);
73 * Scripting command interpreter --
74 * accepts script file name over the pipe and acts accordingly
84 read(fildes[0], &c, 1);
85 while (c != '\n' && (size_t)(pline - line) < sizeof(line)) {
87 read(fildes[0], &c, 1);
90 if (boolean(value(SCRIPT)) && fscript != NULL)
93 setboolean(value(SCRIPT), FALSE);
96 if ((fscript = fopen(line, "a")) == NULL)
100 setboolean(value(SCRIPT), TRUE);
103 write(repdes[1], &reply, 1);
110 if (boolean(value(SCRIPT)) && fscript != NULL)
112 if (signo && tipin_pid)
113 kill(tipin_pid, signo);
121 setboolean(value(BEAUTIFY), !boolean(value(BEAUTIFY)));
126 * ****TIPOUT TIPOUT****
135 sigset_t mask, omask;
137 signal(SIGINT, SIG_IGN);
138 signal(SIGQUIT, SIG_IGN);
139 signal(SIGEMT, intEMT); /* attention from TIPIN */
140 signal(SIGTERM, intTERM); /* time to go signal */
141 signal(SIGIOT, intIOT); /* scripting going on signal */
142 signal(SIGHUP, intTERM); /* for dial-ups */
143 signal(SIGSYS, intSYS); /* beautify toggle */
144 (void) setjmp(sigbuf);
145 sigprocmask(SIG_BLOCK, NULL, &omask);
147 sigprocmask(SIG_SETMASK, &omask, NULL);
148 scnt = read(FD, buf, BUFSIZ);
151 if (scnt == 0 || (scnt < 0 && errno == EIO)) {
153 sigaddset(&mask, SIGTERM);
154 sigprocmask(SIG_BLOCK, &mask, NULL);
162 sigaddset(&mask, SIGEMT);
163 sigaddset(&mask, SIGTERM);
164 sigaddset(&mask, SIGIOT);
165 sigaddset(&mask, SIGSYS);
166 sigprocmask(SIG_BLOCK, &mask, NULL);
167 for (cp = buf; cp < buf + cnt; cp++)
169 write(STDOUT_FILENO, buf, cnt);
170 if (boolean(value(SCRIPT)) && fscript != NULL) {
171 if (!boolean(value(BEAUTIFY))) {
172 fwrite(buf, 1, cnt, fscript);
175 for (cp = buf; cp < buf + cnt; cp++)
176 if ((*cp >= ' ' && *cp <= '~') ||
177 any(*cp, value(EXCEPTIONS)))