#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>
#include "config.h"
#include "screen.h"
#ifndef sun
# include <sys/ioctl.h>
#endif
#ifdef HAVE_SVR4_PTYS
# include <sys/stropts.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
#include "extern.h"
#ifndef PTYRANGE0
# define PTYRANGE0 "qpr"
#endif
#ifndef PTYRANGE1
# define PTYRANGE1 "0123456789abcdef"
#endif
#ifdef M_UNIX
# undef HAVE_SVR4_PTYS
#endif
extern int eff_uid;
static char PtyName[32], TtyName[32];
#if !(defined(sequent) || defined(_SEQUENT_) || defined(HAVE_SVR4_PTYS))
# ifdef hpux
static char PtyProto[] = "/dev/ptym/ptyXY";
static char TtyProto[] = "/dev/pty/ttyXY";
# else
# ifdef M_UNIX
static char PtyProto[] = "/dev/ptypXY";
static char TtyProto[] = "/dev/ttypXY";
# else
static char PtyProto[] = "/dev/ptyXY";
static char TtyProto[] = "/dev/ttyXY";
# endif
# endif
#endif
static void initmaster __P((int));
#if defined(sun)
int pty_preopen = 1;
#else
int pty_preopen = 0;
#endif
#ifndef O_NOCTTY
# define O_NOCTTY 0
#endif
static void
initmaster(f)
int f;
{
#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
}
void
InitPTY(f)
int f;
{
if (f < 0)
return;
#if defined(I_PUSH) && defined(HAVE_SVR4_PTYS) && !defined(sgi) && !defined(linux) && !defined(__osf__) && !defined(M_UNIX)
if (ioctl(f, I_PUSH, "ptem"))
Panic(errno, "InitPTY: cannot I_PUSH ptem");
if (ioctl(f, I_PUSH, "ldterm"))
Panic(errno, "InitPTY: cannot I_PUSH ldterm");
# ifdef sun
if (ioctl(f, I_PUSH, "ttcompat"))
Panic(errno, "InitPTY: cannot I_PUSH ttcompat");
# endif
#endif
}
#if defined(OSX) && !defined(PTY_DONE)
#define PTY_DONE
int
OpenPTY(ttyn)
char **ttyn;
{
register int f;
if ((f = open_controlling_pty(TtyName)) < 0)
return -1;
initmaster(f);
*ttyn = TtyName;
return f;
}
#endif
#if (defined(sequent) || defined(_SEQUENT_)) && !defined(PTY_DONE)
#define PTY_DONE
int
OpenPTY(ttyn)
char **ttyn;
{
char *m, *s;
register int f;
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, *_getpty();
sigret_t (*sigcld)__P(SIGPROTOARG);
sigcld = signal(SIGCHLD, SIG_DFL);
name = _getpty(&f, O_RDWR | O_NONBLOCK, 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;
{
register int f;
struct stat buf;
strcpy(PtyName, "/dev/ptc");
if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_NONBLOCK)) < 0)
return -1;
if (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)
#define PTY_DONE
int
OpenPTY(ttyn)
char **ttyn;
{
register int f;
char *m, *ptsname();
int unlockpt __P((int)), grantpt __P((int));
#if defined(HAVE_GETPT) && defined(linux)
int getpt __P((void));
#endif
sigret_t (*sigcld)__P(SIGPROTOARG);
strcpy(PtyName, "/dev/ptmx");
#if defined(HAVE_GETPT) && defined(linux)
if ((f = getpt()) == -1)
#else
if ((f = open(PtyName, O_RDWR | O_NOCTTY)) == -1)
#endif
return -1;
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
int
OpenPTY(ttyn)
char **ttyn;
{
register int f;
strcpy (PtyName, "/dev/ptc");
if ((f = open (PtyName, O_RDWR | O_NOCTTY)) < 0)
return -1;
strncpy(TtyName, ttyname(f), sizeof(TtyName));
if (eff_uid && access(TtyName, R_OK | W_OK))
{
close(f);
return -1;
}
initmaster(f);
# ifdef _IBMR2
pty_preopen = 1;
# endif
*ttyn = TtyName;
return f;
}
#endif
#if defined(HAVE_OPENPTY) && !defined(PTY_DONE)
#define PTY_DONE
int
OpenPTY(ttyn)
char **ttyn;
{
int f, s;
if (openpty(&f, &s, TtyName, NULL, NULL) != 0)
return -1;
close(s);
initmaster(f);
pty_preopen = 1;
*ttyn = TtyName;
return f;
}
#endif
#ifndef PTY_DONE
int
OpenPTY(ttyn)
char **ttyn;
{
register char *p, *q, *l, *d;
register int f;
debug("OpenPTY: Using BSD style ptys.\n");
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++)
{
debug1("OpenPTY tries '%s'\n", PtyName);
if ((f = open(PtyName, O_RDWR | O_NOCTTY)) == -1)
continue;
q[0] = *l;
q[1] = *d;
if (eff_uid && access(TtyName, R_OK | W_OK))
{
close(f);
continue;
}
#if defined(sun) && defined(TIOCGPGRP) && !defined(SUNOS3)
{
int pgrp;
if (ioctl(f, TIOCGPGRP, (char *)&pgrp) != -1 || errno != EIO)
{
close(f);
continue;
}
}
#endif
initmaster(f);
*ttyn = TtyName;
return f;
}
}
return -1;
}
#endif