167 lines
4.3 KiB
C
167 lines
4.3 KiB
C
/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)tipout.c 8.1 (Berkeley) 6/6/93";
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#endif /* not lint */
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#include "tip.h"
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/*
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* tip
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*
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* lower fork of tip -- handles passive side
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* reading from the remote host
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*/
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static jmp_buf sigbuf;
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/*
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* TIPOUT wait state routine --
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* sent by TIPIN when it wants to posses the remote host
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*/
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void
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intIOT()
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{
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write(repdes[1],&ccc,1);
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read(fildes[0], &ccc,1);
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longjmp(sigbuf, 1);
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}
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/*
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* Scripting command interpreter --
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* accepts script file name over the pipe and acts accordingly
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*/
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void
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intEMT()
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{
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char c, line[256];
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register char *pline = line;
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char reply;
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read(fildes[0], &c, 1);
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while (c != '\n') {
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*pline++ = c;
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read(fildes[0], &c, 1);
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}
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*pline = '\0';
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if (boolean(value(SCRIPT)) && fscript != NULL)
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fclose(fscript);
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if (pline == line) {
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boolean(value(SCRIPT)) = FALSE;
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reply = 'y';
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} else {
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if ((fscript = fopen(line, "a")) == NULL)
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reply = 'n';
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else {
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reply = 'y';
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boolean(value(SCRIPT)) = TRUE;
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}
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}
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write(repdes[1], &reply, 1);
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longjmp(sigbuf, 1);
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}
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void
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intTERM()
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{
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if (boolean(value(SCRIPT)) && fscript != NULL)
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fclose(fscript);
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exit(0);
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}
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void
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intSYS()
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{
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boolean(value(BEAUTIFY)) = !boolean(value(BEAUTIFY));
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longjmp(sigbuf, 1);
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}
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/*
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* ****TIPOUT TIPOUT****
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*/
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tipout()
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{
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char buf[BUFSIZ];
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register char *cp;
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register int cnt;
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extern int errno;
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int omask;
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signal(SIGINT, SIG_IGN);
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signal(SIGQUIT, SIG_IGN);
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signal(SIGEMT, intEMT); /* attention from TIPIN */
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signal(SIGTERM, intTERM); /* time to go signal */
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signal(SIGIOT, intIOT); /* scripting going on signal */
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signal(SIGHUP, intTERM); /* for dial-ups */
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signal(SIGSYS, intSYS); /* beautify toggle */
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(void) setjmp(sigbuf);
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for (omask = 0;; sigsetmask(omask)) {
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cnt = read(FD, buf, BUFSIZ);
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if (cnt <= 0) {
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/* lost carrier */
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if (cnt < 0 && errno == EIO) {
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sigblock(sigmask(SIGTERM));
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intTERM();
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/*NOTREACHED*/
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} else if (cnt == 0 && errno == ENOENT) {
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kill(getppid(),SIGUSR1);
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sigblock(sigmask(SIGTERM));
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intTERM();
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/*NOTREACHED*/
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} else {
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printf("%d %d\r",cnt,errno);
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fflush(stdout);
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}
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continue;
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}
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#define ALLSIGS sigmask(SIGEMT)|sigmask(SIGTERM)|sigmask(SIGIOT)|sigmask(SIGSYS)
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omask = sigblock(ALLSIGS);
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for (cp = buf; cp < buf + cnt; cp++)
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*cp &= 0177;
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write(1, buf, cnt);
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if (boolean(value(SCRIPT)) && fscript != NULL) {
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if (!boolean(value(BEAUTIFY))) {
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fwrite(buf, 1, cnt, fscript);
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continue;
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}
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for (cp = buf; cp < buf + cnt; cp++)
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if ((*cp >= ' ' && *cp <= '~') ||
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any(*cp, value(EXCEPTIONS)))
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putc(*cp, fscript);
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}
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}
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}
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