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/* vi:set ts=8 sts=4 sw=4:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* The stuff in this file mostly comes from the "screen" program.
* Included with permission from Juergen Weigert.
* Copied from "pty.c". "putenv.c" was used for putenv() in misc2.c.
*
* It has been modified to work better with Vim.
* The parts that are not used in Vim have been deleted.
* See the "screen" sources for the complete stuff.
*/
/* Copyright (c) 1993
* Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
* Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
* Copyright (c) 1987 Oliver Laumann
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program (see the file COPYING); if not, write to the
* Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
/* RCS_ID("$Id: pty.c,v 1.12 2008/08/17 21:03:18 vimboss Exp $ FAU") */
#include "vim.h"
#include <signal.h>
#ifdef __CYGWIN32__
# include <sys/termios.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#if HAVE_STROPTS_H
#include <sys/types.h>
#ifdef sinix
#define buf_T __system_buf_t__
#endif
#include <stropts.h>
#ifdef sinix
#undef buf_T
#endif
# ifdef sun
# include <sys/conf.h>
# endif
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#if HAVE_TERMIO_H
# include <termio.h>
#else
# ifdef HAVE_TERMIOS_H
# include <termios.h>
# endif
#endif
#if HAVE_SYS_STREAM_H
# include <sys/stream.h>
#endif
#if HAVE_SYS_PTEM_H
# include <sys/ptem.h>
#endif
#if !defined(sun) && !defined(VMS) && !defined(MACOS)
# include <sys/ioctl.h>
#endif
#if defined(sun) && defined(LOCKPTY) && !defined(TIOCEXCL)
# include <sys/ttold.h>
#endif
#ifdef ISC
# include <sys/tty.h>
# include <sys/sioctl.h>
# include <sys/pty.h>
#endif
#ifdef sgi
# include <sys/sysmacros.h>
#endif
#if defined(_INCLUDE_HPUX_SOURCE) && !defined(hpux)
# define hpux
#endif
/*
* if no PTYRANGE[01] is in the config file, we pick a default
*/
#ifndef PTYRANGE0
# define PTYRANGE0 "qprs"
#endif
#ifndef PTYRANGE1
# define PTYRANGE1 "0123456789abcdef"
#endif
/* SVR4 pseudo ttys don't seem to work with SCO-5 */
#ifdef M_UNIX
# undef HAVE_SVR4_PTYS
#endif
static void initmaster __ARGS((int));
/*
* Open all ptys with O_NOCTTY, just to be on the safe side
* (RISCos mips breaks otherwise)
*/
#ifndef O_NOCTTY
# define O_NOCTTY 0
#endif
static void
initmaster(f)
int f;
{
#ifndef VMS
# ifdef POSIX
tcflush(f, TCIOFLUSH);
# else
# ifdef TIOCFLUSH
(void)ioctl(f, TIOCFLUSH, (char *) 0);
# endif
# endif
# ifdef LOCKPTY
(void)ioctl(f, TIOCEXCL, (char *) 0);
# endif
#endif
}
/*
* This causes a hang on some systems, but is required for a properly working
* pty on others. Needs to be tuned...
*/
int
SetupSlavePTY(fd)
int fd;
{
if (fd < 0)
return 0;
#if defined(I_PUSH) && defined(HAVE_SVR4_PTYS) && !defined(sgi) && !defined(linux) && !defined(__osf__) && !defined(M_UNIX)
# if defined(HAVE_SYS_PTEM_H) || defined(hpux)
if (ioctl(fd, I_PUSH, "ptem") != 0)
return -1;
# endif
if (ioctl(fd, I_PUSH, "ldterm") != 0)
return -1;
# ifdef sun
if (ioctl(fd, I_PUSH, "ttcompat") != 0)
return -1;
# endif
#endif
return 0;
}
#if defined(OSX) && !defined(PTY_DONE)
#define PTY_DONE
int
OpenPTY(ttyn)
char **ttyn;
{
int f;
static char TtyName[32];
if ((f = open_controlling_pty(TtyName)) < 0)
return -1;
initmaster(f);
*ttyn = TtyName;
return f;
}
#endif
#if (defined(sequent) || defined(_SEQUENT_)) && defined(HAVE_GETPSEUDOTTY) \
&& !defined(PTY_DONE)
#define PTY_DONE
int
OpenPTY(ttyn)
char **ttyn;
{
char *m, *s;
int f;
/* used for opening a new pty-pair: */
static char PtyName[32];
static char TtyName[32];
if ((f = getpseudotty(&s, &m)) < 0)
return -1;
#ifdef _SEQUENT_
fvhangup(s);
#endif
strncpy(PtyName, m, sizeof(PtyName));
strncpy(TtyName, s, sizeof(TtyName));
initmaster(f);
*ttyn = TtyName;
return f;
}
#endif
#if defined(__sgi) && !defined(PTY_DONE)
#define PTY_DONE
int
OpenPTY(ttyn)
char **ttyn;
{
int f;
char *name;
RETSIGTYPE (*sigcld)__ARGS(SIGPROTOARG);
/*
* SIGCHLD set to SIG_DFL for _getpty() because it may fork() and
* exec() /usr/adm/mkpts
*/
sigcld = signal(SIGCHLD, SIG_DFL);
name = _getpty(&f, O_RDWR | O_NONBLOCK | O_EXTRA, 0600, 0);
signal(SIGCHLD, sigcld);
if (name == 0)
return -1;
initmaster(f);
*ttyn = name;
return f;
}
#endif
#if defined(MIPS) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE)
#define PTY_DONE
int
OpenPTY(ttyn)
char **ttyn;
{
int f;
struct stat buf;
/* used for opening a new pty-pair: */
static char TtyName[32];
if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_NONBLOCK | O_EXTRA, 0)) < 0)
return -1;
if (mch_fstat(f, &buf) < 0)
{
close(f);
return -1;
}
sprintf(TtyName, "/dev/ttyq%d", minor(buf.st_rdev));
initmaster(f);
*ttyn = TtyName;
return f;
}
#endif
#if defined(HAVE_SVR4_PTYS) && !defined(PTY_DONE) && !defined(hpux) && !defined(MACOS_X)
/* NOTE: Even though HPUX can have /dev/ptmx, the code below doesn't work!
* Same for Mac OS X Leopard. */
#define PTY_DONE
int
OpenPTY(ttyn)
char **ttyn;
{
int f;
char *m, *ptsname();
int unlockpt __ARGS((int)), grantpt __ARGS((int));
RETSIGTYPE (*sigcld)__ARGS(SIGPROTOARG);
/* used for opening a new pty-pair: */
static char TtyName[32];
if ((f = open("/dev/ptmx", O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1)
return -1;
/*
* SIGCHLD set to SIG_DFL for grantpt() because it fork()s and
* exec()s pt_chmod
*/
sigcld = signal(SIGCHLD, SIG_DFL);
if ((m = ptsname(f)) == NULL || grantpt(f) || unlockpt(f))
{
signal(SIGCHLD, sigcld);
close(f);
return -1;
}
signal(SIGCHLD, sigcld);
strncpy(TtyName, m, sizeof(TtyName));
initmaster(f);
*ttyn = TtyName;
return f;
}
#endif
#if defined(_AIX) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE)
#define PTY_DONE
#ifdef _IBMR2
int aixhack = -1;
#endif
int
OpenPTY(ttyn)
char **ttyn;
{
int f;
/* used for opening a new pty-pair: */
static char TtyName[32];
/* a dumb looking loop replaced by mycrofts code: */
if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_EXTRA)) < 0)
return -1;
strncpy(TtyName, ttyname(f), sizeof(TtyName));
if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK))
{
close(f);
return -1;
}
initmaster(f);
# ifdef _IBMR2
if (aixhack >= 0)
close(aixhack);
if ((aixhack = open(TtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) < 0)
{
close(f);
return -1;
}
# endif
*ttyn = TtyName;
return f;
}
#endif
#ifndef PTY_DONE
# ifdef hpux
static char PtyProto[] = "/dev/ptym/ptyXY";
static char TtyProto[] = "/dev/pty/ttyXY";
# else
# ifdef __BEOS__
static char PtyProto[] = "/dev/pt/XY";
static char TtyProto[] = "/dev/tt/XY";
# else
static char PtyProto[] = "/dev/ptyXY";
static char TtyProto[] = "/dev/ttyXY";
# endif
# endif
int
OpenPTY(ttyn)
char **ttyn;
{
char *p, *q, *l, *d;
int f;
/* used for opening a new pty-pair: */
static char PtyName[32];
static char TtyName[32];
strcpy(PtyName, PtyProto);
strcpy(TtyName, TtyProto);
for (p = PtyName; *p != 'X'; p++)
;
for (q = TtyName; *q != 'X'; q++)
;
for (l = PTYRANGE0; (*p = *l) != '\0'; l++)
{
for (d = PTYRANGE1; (p[1] = *d) != '\0'; d++)
{
#if !defined(MACOS) || defined(USE_CARBONIZED)
if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1)
#else
if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_EXTRA)) == -1)
#endif
continue;
q[0] = *l;
q[1] = *d;
#ifndef MACOS
if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK))
{
close(f);
continue;
}
#endif
#if defined(sun) && defined(TIOCGPGRP) && !defined(SUNOS3)
/* Hack to ensure that the slave side of the pty is
* unused. May not work in anything other than SunOS4.1
*/
{
int pgrp;
/* tcgetpgrp does not work (uses TIOCGETPGRP)! */
if (ioctl(f, TIOCGPGRP, (char *)&pgrp) != -1 || errno != EIO)
{
close(f);
continue;
}
}
#endif
initmaster(f);
*ttyn = TtyName;
return f;
}
}
return -1;
}
#endif
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