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/* $OpenBSD: wwenviron.c,v 1.10 2003/08/01 22:01:37 david Exp $ */
/* $NetBSD: wwenviron.c,v 1.4 1995/12/21 08:39:50 mycroft Exp $ */
/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Edward Wang at The University of California, Berkeley.
*
* 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. 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
#if 0
static char sccsid[] = "@(#)wwenviron.c 8.1 (Berkeley) 6/6/93";
#else
static char rcsid[] = "$OpenBSD: wwenviron.c,v 1.10 2003/08/01 22:01:37 david Exp $";
#endif
#endif /* not lint */
#include "ww.h"
#if !defined(OLD_TTY)
#include <sys/ioctl.h>
#endif
#include <sys/signal.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
/*
* Set up the environment of this process to run in window 'wp'.
*/
wwenviron(wp)
struct ww *wp;
{
int i;
#ifndef TIOCSCTTY
pid_t pgrp = getpid();
#endif
char buf[1024];
sigset_t sigset;
#ifndef TIOCSCTTY
if ((i = open("/dev/tty", 0)) < 0)
goto bad;
if (ioctl(i, TIOCNOTTY, (char *)0) < 0)
goto bad;
(void) close(i);
#endif
if ((i = wp->ww_socket) < 0) {
if ((i = open(wp->ww_ttyname, 2)) < 0)
goto bad;
if (wwsettty(i, &wwwintty) < 0)
goto bad;
if (wwsetttysize(i, wp->ww_w.nr, wp->ww_w.nc) < 0)
goto bad;
}
(void) dup2(i, 0);
(void) dup2(i, 1);
(void) dup2(i, 2);
(void) close(i);
#ifdef TIOCSCTTY
(void) setsid();
(void) ioctl(0, TIOCSCTTY, 0);
#else
(void) ioctl(0, TIOCSPGRP, (char *)&pgrp);
(void) setpgrp(pgrp, pgrp);
#endif
/* SIGPIPE is the only one we ignore */
(void) signal(SIGPIPE, SIG_DFL);
sigemptyset(&sigset);
sigprocmask(SIG_SETMASK, &sigset, (sigset_t *)0);
/*
* Two conditions that make destructive setenv ok:
* 1. setenv() copies the string,
* 2. we've already called tgetent which copies the termcap entry.
*/
(void) snprintf(buf, sizeof buf, "%sco#%d:li#%d:%s",
WWT_TERMCAP, wp->ww_w.nc, wp->ww_w.nr, wwwintermcap);
(void) setenv("TERMCAP", buf, 1);
(void) snprintf(buf, sizeof buf, "%d", wp->ww_id + 1);
(void) setenv("WINDOW_ID", buf, 1);
return 0;
bad:
wwerrno = WWE_SYS;
return -1;
}
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