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/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#include "tip.h"
#include <limits.h>
/*
* tip
*
* lower fork of tip -- handles passive side
* reading from the remote host
*/
FILE *fscript;
static sigjmp_buf sigbuf;
/*
* TIPOUT wait state routine --
* sent by TIPIN when it wants to posses the remote host
*/
void
intIOT(void)
{
(void) write(repdes[1], &ccc, 1);
(void) read(fildes[0], &ccc, 1);
siglongjmp(sigbuf, 1);
}
/*
* Scripting command interpreter --
* accepts script file name over the pipe and acts accordingly
*/
void
intEMT(void)
{
char c, line[PATH_MAX];
char *pline = line;
char reply;
(void) read(fildes[0], &c, 1);
while (c != '\n' && line + sizeof (line) - pline > 1) {
*pline++ = c;
(void) read(fildes[0], &c, 1);
}
*pline = '\0';
if (boolean(value(SCRIPT)) && fscript != NULL)
(void) 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;
}
}
(void) write(repdes[1], &reply, 1);
siglongjmp(sigbuf, 1);
}
void
intTERM(void)
{
if (boolean(value(SCRIPT)) && fscript != NULL)
(void) fclose(fscript);
exit(0);
}
void
intSYS(void)
{
boolean(value(BEAUTIFY)) = !boolean(value(BEAUTIFY));
siglongjmp(sigbuf, 1);
}
/*
* ****TIPOUT TIPOUT****
*/
void
tipout(void)
{
char buf[BUFSIZ];
char *cp;
int cnt;
sigset_t omask, bmask, tmask;
(void) signal(SIGINT, SIG_IGN);
(void) signal(SIGQUIT, SIG_IGN);
/* attention from TIPIN */
(void) signal(SIGEMT, (sig_handler_t)intEMT);
/* time to go signal */
(void) signal(SIGTERM, (sig_handler_t)intTERM);
/* scripting going on signal */
(void) signal(SIGIOT, (sig_handler_t)intIOT);
/* for dial-ups */
(void) signal(SIGHUP, (sig_handler_t)intTERM);
/* beautify toggle */
(void) signal(SIGSYS, (sig_handler_t)intSYS);
(void) sigsetjmp(sigbuf, 1);
(void) sigemptyset(&omask);
(void) sigemptyset(&bmask);
(void) sigaddset(&bmask, SIGEMT);
(void) sigaddset(&bmask, SIGTERM);
(void) sigaddset(&bmask, SIGIOT);
(void) sigaddset(&bmask, SIGSYS);
(void) sigemptyset(&tmask);
(void) sigaddset(&tmask, SIGTERM);
for (;;) {
cnt = read(FD, buf, BUFSIZ);
if (cnt <= 0) {
/*
* If dialback is specified, ignore the hangup
* and clear the hangup condition on the device.
*/
if (cnt == 0 && DB) {
int fd;
DB = 0;
if ((fd = open(DV, O_RDWR)) >= 0) {
if (fd != FD)
(void) close(fd);
}
continue;
}
/* lost carrier */
if ((cnt < 0 && errno == EIO) ||
(cnt == 0)) {
(void) sigprocmask(SIG_BLOCK, &tmask, NULL);
intTERM();
/*NOTREACHED*/
}
} else {
(void) sigprocmask(SIG_BLOCK, &bmask, &omask);
if (!noparity)
for (cp = buf; cp < buf + cnt; cp++)
*cp &= 0177;
(void) write(1, buf, cnt);
if (boolean(value(SCRIPT)) && fscript != NULL) {
if (!boolean(value(BEAUTIFY))) {
(void) fwrite(buf, 1, cnt, fscript);
} else {
for (cp = buf; cp < buf + cnt; cp++)
if ((*cp >= ' ' && *cp <= '~')||
any(*cp, value(EXCEPTIONS)))
(void) putc(*cp,
fscript);
}
}
}
(void) sigprocmask(SIG_SETMASK, &omask, NULL);
}
}
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