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main.c

#ifndef lint
static char *rid="$XConsortium: main.c,v 1.195 91/07/22 12:23:31 gildea Exp $";
#endif /* lint */

/*
 *                       W A R N I N G
 * 
 * If you think you know what all of this code is doing, you are
 * probably very mistaken.  There be serious and nasty dragons here.
 *
 * This client is *not* to be taken as an example of how to write X
 * Toolkit applications.  It is in need of a substantial rewrite,
 * ideally to create a generic tty widget with several different parsing
 * widgets so that you can plug 'em together any way you want.  Don't
 * hold your breath, though....
 */

/***********************************************************
Copyright 1987, 1988 by Digital Equipment Corporation, Maynard,
Massachusetts, and the Massachusetts Institute of Technology,
Cambridge, Massachusetts.

                        All Rights Reserved

Permission to use, copy, modify, and distribute this software and its 
documentation for any purpose and without fee is hereby granted, 
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in 
supporting documentation, and that the names of Digital or MIT not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.  

DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.

******************************************************************/


/* main.c */

#ifdef HAVE_CONFIG_H
#define ENV_HANGUL_KEYBOARD_TYPE 1
#endif

#include "version.h"

#include "ptyx.h"
#include "data.h"
#include "error.h"
#include "menu.h"
#include "hstrdefs.h" /* yjseo@mizi.co.kr */

#include <X11/StringDefs.h>
#include <X11/Shell.h>

#include <X11/Xos.h>
#include <X11/cursorfont.h>
#include <X11/Xaw/SimpleMenu.h>
#include <pwd.h>
#include <ctype.h>
#ifdef linux
#ifdef      __GLIBC__
#if   __GLIBC_MINOR__<1
#include <termbits.h>
#else
#include <termios.h>
#endif      /* __GLIBC_MINOR__ */
#endif      /* __GLIBC__ */
#endif

#ifdef DGUX /* dkim@surecom.com */
/* DGUX is SVR4 but its SYSV side of TTY has bugs in it */
/* we have to use BSD part of DGUX except this UTMP parts */
/* since BSD parts of UTMP coding won't work on DGUX - DKIM */
#ifndef USE_SYSV_UTMP
#define     USE_SYSV_UTMP
#endif
#endif

#ifdef att
#define ATT
#endif

#ifdef SVR4
#ifndef SYSV
#define SYSV                  /* SVR4 is (approx) superset of SVR3 */
#endif
#define USE_SYSV_UTMP
#define ATT
#ifndef sgi
#define USE_TERMIOS
#endif
#define HAS_UTMP_UT_HOST

/* in solaris, let's use terminfo instead of termcap */
/* dkim@surecom.com */
#ifdef sun
#define USE_TERMINFO
#endif

#endif
  
#if defined(SYSV) && defined(i386) && !defined(SVR4)
#define USE_SYSV_UTMP
#define ATT
#define USE_HANDSHAKE
static Bool IsPts = False;
#endif

#if defined(ATT) && !defined(sgi)
#define USE_USG_PTYS
#else
#define USE_HANDSHAKE
#endif

#if defined(SYSV) && !defined(SVR4)
/* older SYSV systems cannot ignore SIGHUP.
   Shell hangs, or you get extra shells, or something like that */
#define USE_SYSV_SIGHUP
#endif

#if defined(sony) && defined(bsd43) && !defined(KANJI)
#define KANJI
#endif

#ifdef linux
#define USE_SYSV_TERMIO
#define USE_SYSV_PGRP
#define USE_SYSV_UTMP
#define USE_SYSV_SIGNALS
#define HAS_UTMP_UT_HOST
#define LASTLOG
#define WTMP
#endif /* linux */

#ifdef USE_TTY_GROUP
#include <grp.h>
#endif

#include <sys/ioctl.h>
#include <sys/stat.h>

#ifdef USE_TERMIOS
#include <termios.h>
/* this hacked termios support only works on SYSV */
#define USE_SYSV_TERMIO
#define termio termios
#undef TCGETA
#define TCGETA TCGETS
#undef TCSETA
#define TCSETA TCSETS
#else /* USE_TERMIOS */
#ifdef SYSV
#include <sys/termio.h>
#endif /* SYSV */
#endif /* USE_TERMIOS else */

#ifdef SVR4
#undef TIOCSLTC                     /* defined, but not useable */
#endif

#if defined(sgi) && OSMAJORVERSION >= 5
#undef TIOCLSET                     /* defined, but not useable */
#endif

#ifdef SYSV
#ifdef USE_USG_PTYS                 /* AT&T SYSV has no ptyio.h */
#include <sys/stream.h>             /* get typedef used in ptem.h */
#include <sys/stropts.h>            /* for I_PUSH */
#ifndef SVR4
#include <sys/ptem.h>               /* get struct winsize */
#endif
#include <poll.h>             /* for POLLIN */
#endif /* USE_USG_PTYS */
#define USE_SYSV_TERMIO
#define USE_SYSV_SIGNALS
#define     USE_SYSV_PGRP
#define USE_SYSV_ENVVARS            /* COLUMNS/LINES vs. TERMCAP */
/*
 * now get system-specific includes
 */
#ifdef CRAY
#define USE_SYSV_UTMP
#define HAS_UTMP_UT_HOST
#define HAS_BSD_GROUPS
#endif
#ifdef macII
#define USE_SYSV_UTMP
#define HAS_UTMP_UT_HOST
#define HAS_BSD_GROUPS
#include <sys/ttychars.h>
#undef USE_SYSV_ENVVARS
#undef FIOCLEX
#undef FIONCLEX
#define setpgrp2 setpgrp
#include <sgtty.h>
#include <sys/resource.h>
#endif /* macII */
#ifdef hpux
#define HAS_BSD_GROUPS
#define USE_SYSV_UTMP
#define HAS_UTMP_UT_HOST
#define USE_POSIX_WAIT
#include <sys/ptyio.h>
#endif /* hpux */
#ifdef sgi
#define USE_SYSV_ENVVARS
#define HAS_BSD_GROUPS
#include <sys/sysmacros.h>
#endif /* sgi */
#ifdef sun
#include <sys/strredir.h>
#endif
#ifdef AIXV3
#define USE_SYSV_UTMP
#define HAS_UTMP_UT_HOST
#endif
#else /* SYSV */
#ifndef linux
#include <sgtty.h>
#endif
#include <sys/resource.h>
#define HAS_UTMP_UT_HOST
#define HAS_BSD_GROUPS
#ifdef __osf__
#define USE_SYSV_UTMP
#define setpgrp setpgid
#endif
#endif /* SYSV */

#ifdef _POSIX_SOURCE
#define USE_POSIX_WAIT
#endif
#ifdef SVR4
#define USE_POSIX_WAIT
#endif

#include <stdio.h>
#include <errno.h>
#include <setjmp.h>

#ifdef X_NOT_STDC_ENV
extern int errno;
#define Time_t long
extern Time_t time ();
#else
#include <time.h>
#define Time_t time_t
#endif

#ifdef hpux
#include <sys/utsname.h>
#endif /* hpux */

#if defined(apollo) && OSMAJORVERSION == 10 && OSMINORVERSION < 4
#define ttyslot() 1
#endif /* apollo */

#ifdef SVR4
#include <utmpx.h>
#define setutent setutxent
#define getutent getutxent
#define getutid getutxid
#define endutent endutxent
#define pututline pututxline
#else
#include <utmp.h>
#if defined(_CRAY) && OSMAJORVERSION < 8
extern struct utmp *getutid __((struct utmp *_Id));
#endif
#endif

#ifdef LASTLOG
#ifndef _PATH_LASTLOG
#include <lastlog.h>
#endif
#endif
#include <sys/param.h>  /* for NOFILE */

#ifdef  PUCC_PTYD
#include <local/openpty.h>
int   Ptyfd;
#endif /* PUCC_PTYD */

#ifdef sequent
#define USE_GET_PSEUDOTTY
#endif

#ifndef UTMP_FILENAME
#ifdef UTMP_FILE
#define UTMP_FILENAME UTMP_FILE
#else
#ifdef _PATH_UTMP
#define UTMP_FILENAME _PATH_UTMP
#else
#define UTMP_FILENAME "/etc/utmp"
#endif
#endif
#endif

#ifndef LASTLOG_FILENAME
#ifdef _PATH_LASTLOG
#define LASTLOG_FILENAME _PATH_LASTLOG
#else
#define LASTLOG_FILENAME "/usr/adm/lastlog"  /* only on BSD systems */
#endif
#endif

#ifndef WTMP_FILENAME
#ifdef WTMP_FILE
#define WTMP_FILENAME WTMP_FILE
#else
#ifdef _PATH_WTMP
#define WTMP_FILENAME _PATH_WTMP
#else
#ifdef SYSV
#define WTMP_FILENAME "/etc/wtmp"
#else
#define WTMP_FILENAME "/usr/adm/wtmp"
#endif
#endif
#endif
#endif

#include <signal.h>

#if defined(sco) || defined(ISC)
#undef SIGTSTP                /* defined, but not the BSD way */
#endif

#ifdef SIGTSTP
#include <sys/wait.h>
#ifdef hpux
#include <sys/bsdtty.h>
#endif
#endif

#ifdef SIGNALRETURNSINT
#define SIGNAL_T int
#define SIGNAL_RETURN return 0
#else
#define SIGNAL_T void
#define SIGNAL_RETURN return
#endif

SIGNAL_T Exit();

#ifndef X_NOT_POSIX
#include <unistd.h>
#else
extern long lseek();
#ifdef USG
extern unsigned sleep();
#else
extern void sleep();
#endif
#endif

#ifndef X_NOT_STDC_ENV
#include <stdlib.h>
#else
extern char *malloc();
extern char *calloc();
extern char *realloc();
extern char *getenv();
extern void exit();
#endif
#ifdef X_NOT_POSIX
extern char *ttyname();
#endif

#ifdef sgi
#include <locale.h>
#endif

/* dkim@surecom.com */
#ifdef USE_TERMINFO
#include <curses.h>
#include <term.h>
#endif

#ifdef SYSV
extern char *ptsname();
#endif

extern char *strindex ();
extern void HandlePopupMenu();

int switchfb[] = {0, 2, 1, 3};

static SIGNAL_T reapchild ();

static Bool added_utmp_entry = False;

static char **command_to_exec = NULL;

#ifdef USE_SYSV_TERMIO
/* The following structures are initialized in main() in order
** to eliminate any assumptions about the internal order of their
** contents.
*/
static struct termio d_tio;
#if defined(linux) && defined(__alpha__)
#undef TIOCSLTC
#endif /* linux && __alpha__ */
#ifdef TIOCSLTC
static struct ltchars d_ltc;
#endif      /* TIOCSLTC */

#ifdef sgi
#undef TIOCLSET /* XXX why is this undef-ed again? */
#endif

#ifdef TIOCLSET
static unsigned int d_lmode;
#endif      /* TIOCLSET */
#else /* not USE_SYSV_TERMIO */
static struct  sgttyb d_sg = {
        0, 0, 0177, CKILL, EVENP|ODDP|ECHO|XTABS|CRMOD
};
static struct  tchars d_tc = {
        CINTR, CQUIT, CSTART,
        CSTOP, CEOF, CBRK,
};
static struct  ltchars d_ltc = {
        CSUSP, CDSUSP, CRPRNT,
        CFLUSH, CWERASE, CLNEXT
};
static int d_disipline = NTTYDISC;
static long int d_lmode = LCRTBS|LCRTERA|LCRTKIL|LCTLECH;
#ifdef sony
static long int d_jmode = KM_SYSSJIS|KM_ASCII;
static struct jtchars d_jtc = {
      'J', 'B'
};
#endif /* sony */
#endif /* USE_SYSV_TERMIO */

/* allow use of system default characters if defined and reasonable */
#ifndef CEOF
#define CEOF ('D'&037)
#endif
#ifndef CSUSP
#define CSUSP ('Z'&037)
#endif
#ifndef CQUIT
#define CQUIT ('\\'&037)
#endif
#ifndef CEOL
#define CEOL 0
#endif
#ifndef CSWTCH
#define CSWTCH 0
#endif
#ifndef CLNEXT
#define CLNEXT ('V'&037)
#endif
#ifndef CWERASE
#define CWERASE ('W'&037)
#endif
#ifndef CRPRNT
#define CRPRNT ('R'&037)
#endif
#ifndef CFLUSH
#define CFLUSH ('O'&037)
#endif
#ifndef CSTOP
#define CSTOP ('S'&037)
#endif
#ifndef CSTART
#define CSTART ('Q'&037)
#endif

static int parse_tty_modes ();
/*
 * SYSV has the termio.c_cc[V] and ltchars; BSD has tchars and ltchars;
 * SVR4 has only termio.c_cc, but it includes everything from ltchars.
 */
static int override_tty_modes = 0;
struct _xttymodes {
    char *name;
    int len;
    int set;
    char value;
} ttymodelist[] = {
{ "intr", 4, 0, '\0' },             /* tchars.t_intrc ; VINTR */
#define XTTYMODE_intr 0
{ "quit", 4, 0, '\0' },             /* tchars.t_quitc ; VQUIT */
#define XTTYMODE_quit 1
{ "erase", 5, 0, '\0' },            /* sgttyb.sg_erase ; VERASE */
#define XTTYMODE_erase 2
{ "kill", 4, 0, '\0' },             /* sgttyb.sg_kill ; VKILL */
#define XTTYMODE_kill 3
{ "eof", 3, 0, '\0' },              /* tchars.t_eofc ; VEOF */
#define XTTYMODE_eof 4
{ "eol", 3, 0, '\0' },              /* VEOL */
#define XTTYMODE_eol 5
{ "swtch", 5, 0, '\0' },            /* VSWTCH */
#define XTTYMODE_swtch 6
{ "start", 5, 0, '\0' },            /* tchars.t_startc */
#define XTTYMODE_start 7
{ "stop", 4, 0, '\0' },             /* tchars.t_stopc */
#define XTTYMODE_stop 8
{ "brk", 3, 0, '\0' },              /* tchars.t_brkc */
#define XTTYMODE_brk 9
{ "susp", 4, 0, '\0' },             /* ltchars.t_suspc ; VSUSP */
#define XTTYMODE_susp 10
{ "dsusp", 5, 0, '\0' },            /* ltchars.t_dsuspc ; VDSUSP */
#define XTTYMODE_dsusp 11
{ "rprnt", 5, 0, '\0' },            /* ltchars.t_rprntc ; VREPRINT */
#define XTTYMODE_rprnt 12
{ "flush", 5, 0, '\0' },            /* ltchars.t_flushc ; VDISCARD */
#define XTTYMODE_flush 13
{ "weras", 5, 0, '\0' },            /* ltchars.t_werasc ; VWERASE */
#define XTTYMODE_weras 14
{ "lnext", 5, 0, '\0' },            /* ltchars.t_lnextc ; VLNEXT */
#define XTTYMODE_lnext 15
{ NULL, 0, 0, '\0' },               /* end of data */
};

#ifdef USE_SYSV_UTMP
#if defined(X_NOT_STDC_ENV) || (defined(AIXV3) && OSMAJORVERSION < 4)
extern struct utmp *getutent();
extern struct utmp *getutid();
extern struct utmp *getutline();
extern void pututline();
extern void setutent();
extern void endutent();
extern void utmpname();
#endif

#ifdef X_NOT_STDC_ENV           /* could remove paragraph unconditionally? */
extern struct passwd *getpwent();
extern struct passwd *getpwuid();
extern struct passwd *getpwnam();
extern void setpwent();
extern void endpwent();
#endif

extern struct passwd *fgetpwent();
#else   /* not USE_SYSV_UTMP */
static char etc_utmp[] = UTMP_FILENAME;
#ifdef LASTLOG
static char etc_lastlog[] = LASTLOG_FILENAME;
#endif
#endif        /* USE_SYSV_UTMP */

#ifdef WTMP
static char etc_wtmp[] = WTMP_FILENAME;
#endif

/*
 * Some people with 4.3bsd /bin/login seem to like to use login -p -f user
 * to implement xterm -ls.  They can turn on USE_LOGIN_DASH_P and turn off
 * WTMP and LASTLOG.
 */
#ifdef USE_LOGIN_DASH_P
#ifndef LOGIN_FILENAME
#define LOGIN_FILENAME "/bin/login"
#endif
static char bin_login[] = LOGIN_FILENAME;
#endif

static int inhibit;
static char passedPty[2];     /* name if pty if slave */

#if defined(TIOCCONS) || defined(SRIOCSREDIR)
static int Console;
#include <X11/Xmu/SysUtil.h>  /* XmuGetHostname */
#define MIT_CONSOLE_LEN 12
#define MIT_CONSOLE "MIT_CONSOLE_"
static char mit_console_name[255 + MIT_CONSOLE_LEN + 1] = MIT_CONSOLE;
static Atom mit_console;
#endif      /* TIOCCONS */

#ifndef USE_SYSV_UTMP
static int tslot;
#endif      /* USE_SYSV_UTMP */
static jmp_buf env;

char *ProgramName;
Boolean sunFunctionKeys;

static struct _resource {
    char *xterm_name;
    char *icon_geometry;
    char *title;
    char *icon_name;
    char *term_name;
    char *tty_modes;
    Boolean utmpInhibit;
    Boolean sunFunctionKeys;  /* %%% should be widget resource? */
    Boolean wait_for_map;
    Boolean useInsertMode;
} resource;

/* used by VT (charproc.c) */

#define offset(field)   XtOffsetOf(struct _resource, field)

static XtResource application_resources[] = {
    {"name", "Name", XtRString, sizeof(char *),
      offset(xterm_name), XtRString, "hanterm"},
    {"iconGeometry", "IconGeometry", XtRString, sizeof(char *),
      offset(icon_geometry), XtRString, (caddr_t) NULL},
    {XtNtitle, XtCTitle, XtRString, sizeof(char *),
      offset(title), XtRString, (caddr_t) NULL},
    {XtNiconName, XtCIconName, XtRString, sizeof(char *),
      offset(icon_name), XtRString, (caddr_t) NULL},
    {"termName", "TermName", XtRString, sizeof(char *),
      offset(term_name), XtRString, (caddr_t) NULL},
    {"ttyModes", "TtyModes", XtRString, sizeof(char *),
      offset(tty_modes), XtRString, (caddr_t) NULL},
    {"utmpInhibit", "UtmpInhibit", XtRBoolean, sizeof (Boolean),
      offset(utmpInhibit), XtRString, "false"},
    {"sunFunctionKeys", "SunFunctionKeys", XtRBoolean, sizeof (Boolean),
      offset(sunFunctionKeys), XtRString, "false"},
    {"waitForMap", "WaitForMap", XtRBoolean, sizeof (Boolean),
        offset(wait_for_map), XtRString, "false"},
    {"useInsertMode", "UseInsertMode", XtRBoolean, sizeof (Boolean),
        offset(useInsertMode), XtRString, "false"},
};
#undef offset

static char *fallback_resources[] = {
    "Hanterm*SimpleMenu*menuLabel.vertSpace: 100",
    "Hanterm*SimpleMenu*HorizontalMargins: 16",
    "Hanterm*SimpleMenu*Sme.height: 16",
    "Hanterm*SimpleMenu*Cursor: left_ptr",
    "Hanterm*mainMenu.Label:  Main Options (no app-defaults)",
    "Hanterm*vtMenu.Label:  VT Options (no app-defaults)",
    "Hanterm*fontMenu.Label:  VT Fonts (no app-defaults)",
    NULL
};

/* Command line options table.  Only resources are entered here...there is a
   pass over the remaining options after XrmParseCommand is let loose. */

static XrmOptionDescRec optionDescList[] = {
{"-geometry",     "*vt100.geometry",XrmoptionSepArg,  (caddr_t) NULL},
{"-132",    "*c132",    XrmoptionNoArg,         (caddr_t) "on"},
{"+132",    "*c132",    XrmoptionNoArg,         (caddr_t) "off"},
{"-ah",           "*alwaysHighlight", XrmoptionNoArg, (caddr_t) "on"},
{"+ah",           "*alwaysHighlight", XrmoptionNoArg, (caddr_t) "off"},
{"-b",            "*internalBorder",XrmoptionSepArg,  (caddr_t) NULL},
{"-bdc",    "*colorBDMode",   XrmoptionNoArg,         (caddr_t) "off"},
{"+bdc",    "*colorBDMode",   XrmoptionNoArg,         (caddr_t) "on"},
{"-cb",           "*cutToBeginningOfLine", XrmoptionNoArg, (caddr_t) "off"},
{"+cb",           "*cutToBeginningOfLine", XrmoptionNoArg, (caddr_t) "on"},
{"-cc",           "*charClass",     XrmoptionSepArg,  (caddr_t) NULL},
{"-cn",           "*cutNewline",    XrmoptionNoArg,         (caddr_t) "off"},
{"+cn",           "*cutNewline",    XrmoptionNoArg,         (caddr_t) "on"},
{"-cr",           "*cursorColor",   XrmoptionSepArg,  (caddr_t) NULL},
{"-cu",           "*curses",  XrmoptionNoArg,         (caddr_t) "on"},
{"+cu",           "*curses",  XrmoptionNoArg,         (caddr_t) "off"},
{"-e",            NULL,       XrmoptionSkipLine,      (caddr_t) NULL},
{"-fb",           "*boldFont",      XrmoptionSepArg,  (caddr_t) NULL},
{"-hfn",    "*hangulFont",    XrmoptionSepArg,  (caddr_t) NULL},
{"-j",            "*jumpScroll",    XrmoptionNoArg,         (caddr_t) "on"},
{"+j",            "*jumpScroll",    XrmoptionNoArg,         (caddr_t) "off"},
{"-l",            "*logging", XrmoptionNoArg,         (caddr_t) "on"},
{"+l",            "*logging", XrmoptionNoArg,         (caddr_t) "off"},
{"-lf",           "*logFile", XrmoptionSepArg,  (caddr_t) NULL},
{"-ls",           "*loginShell",    XrmoptionNoArg,         (caddr_t) "on"},
{"+ls",           "*loginShell",    XrmoptionNoArg,         (caddr_t) "off"},
{"-mb",           "*marginBell",    XrmoptionNoArg,         (caddr_t) "on"},
{"+mb",           "*marginBell",    XrmoptionNoArg,         (caddr_t) "off"},
{"-mc",           "*multiClickTime", XrmoptionSepArg, (caddr_t) NULL},
{"-ms",           "*pointerColor",XrmoptionSepArg,    (caddr_t) NULL},
{"-nb",           "*nMarginBell",   XrmoptionSepArg,  (caddr_t) NULL},
{"-nul",    "*underLine",     XrmoptionNoArg,         (caddr_t) "off"},
{"+nul",    "*underLine",     XrmoptionNoArg,         (caddr_t) "on"},
{"-rw",           "*reverseWrap",   XrmoptionNoArg,         (caddr_t) "on"},
{"+rw",           "*reverseWrap",   XrmoptionNoArg,         (caddr_t) "off"},
{"-aw",           "*autoWrap",      XrmoptionNoArg,         (caddr_t) "on"},
{"+aw",           "*autoWrap",      XrmoptionNoArg,         (caddr_t) "off"},
{"-s",            "*multiScroll",   XrmoptionNoArg,         (caddr_t) "on"},
{"+s",            "*multiScroll",   XrmoptionNoArg,         (caddr_t) "off"},
{"-sb",           "*scrollBar",     XrmoptionNoArg,         (caddr_t) "on"},
{"+sb",           "*scrollBar",     XrmoptionNoArg,         (caddr_t) "off"},
{"-sf",           "*sunFunctionKeys", XrmoptionNoArg, (caddr_t) "on"},
{"+sf",           "*sunFunctionKeys", XrmoptionNoArg, (caddr_t) "off"},
{"-si",           "*scrollTtyOutput",     XrmoptionNoArg,         (caddr_t) "off"},
{"+si",           "*scrollTtyOutput",     XrmoptionNoArg,         (caddr_t) "on"},
{"-sk",           "*scrollKey",     XrmoptionNoArg,         (caddr_t) "on"},
{"+sk",           "*scrollKey",     XrmoptionNoArg,         (caddr_t) "off"},
{"-sl",           "*saveLines",     XrmoptionSepArg,  (caddr_t) NULL},
{"-tm",           "*ttyModes",      XrmoptionSepArg,  (caddr_t) NULL},
{"-tn",           "*termName",      XrmoptionSepArg,  (caddr_t) NULL},
{"-ulc",    "*colorULMode",   XrmoptionNoArg,         (caddr_t) "off"},
{"+ulc",    "*colorULMode",   XrmoptionNoArg,         (caddr_t) "on"},
{"-ut",           "*utmpInhibit",   XrmoptionNoArg,         (caddr_t) "on"},
{"+ut",           "*utmpInhibit",   XrmoptionNoArg,         (caddr_t) "off"},
{"-im",           "*useInsertMode", XrmoptionNoArg,   (caddr_t) "on"},
{"+im",           "*useInsertMode", XrmoptionNoArg,   (caddr_t) "off"},
{"-vb",           "*visualBell",    XrmoptionNoArg,         (caddr_t) "on"},
{"+vb",           "*visualBell",    XrmoptionNoArg,         (caddr_t) "off"},
{"-wf",           "*waitForMap",    XrmoptionNoArg,         (caddr_t) "on"},
{"+wf",           "*waitForMap",    XrmoptionNoArg,         (caddr_t) "off"},
{"-hc",           "*hangulCode",    XrmoptionSepArg,  (caddr_t) NULL},
/* bogus old compatibility stuff for which there are
   standard XtAppInitialize options now */
{"#",       ".iconGeometry",XrmoptionStickyArg, (caddr_t) NULL},
{"-T",            "*title",   XrmoptionSepArg,  (caddr_t) NULL},
{"-n",            "*iconName",      XrmoptionSepArg,  (caddr_t) NULL},
{"-r",            "*reverseVideo",XrmoptionNoArg,           (caddr_t) "on"},
{"+r",            "*reverseVideo",XrmoptionNoArg,           (caddr_t) "off"},
{"-rv",           "*reverseVideo",XrmoptionNoArg,           (caddr_t) "on"},
{"+rv",           "*reverseVideo",XrmoptionNoArg,           (caddr_t) "off"},
{"-w",            ".borderWidth", XrmoptionSepArg,    (caddr_t) NULL},
};

static struct _options {
  char *opt;
  char *desc;
} options[] = {
{ "-help",                 "print out this message" },
{ "-version",              "print the version number" },
{ "-display displayname",  "X server to contact" },
{ "-geometry geom",        "size (in characters) and position" },
{ "-/+rv",                 "turn on/off reverse video" },
{ "-bg color",             "background color" },
{ "-fg color",             "foreground color" },
{ "-bd color",             "border color" },
{ "-bw number",            "border width in pixels" },
{ "-fn fontname",          "normal text font" },
{ "-hfn fontname",         "normal Hangul text font" },
{ "-iconic",               "start iconic" },
{ "-name string",          "client instance, icon, and title strings" },
{ "-title string",         "title string" },
{ "-xrm resourcestring",   "additional resource specifications" },
{ "-/+132",                "turn on/off column switch inhibiting" },
{ "-/+ah",                 "turn on/off always highlight" },
{ "-b number",             "internal border in pixels" },
{ "-/+bdc",                "turn off/on display of bold as color"},
{ "-/+cb",                 "turn on/off cut-to-beginning-of-line inhibit" },
{ "-cc classrange",        "specify additional character classes" },
{ "-/+cn",                 "turn on/off cut newline inhibit" },
{ "-cr color",             "text cursor color" },
{ "-/+cu",                 "turn on/off curses emulation" },
{ "-fb fontname",          "bold text font" },
{ "-/+im",           "use insert mode for TERMCAP" },
{ "-/+j",                  "turn on/off jump scroll" },
{ "-/+l",                  "turn on/off logging" },
{ "-lf filename",          "logging filename" },
{ "-/+ls",                 "turn on/off login shell" },
{ "-/+mb",                 "turn on/off margin bell" },
{ "-mc milliseconds",      "multiclick time in milliseconds" },
{ "-ms color",             "pointer color" },
{ "-nb number",            "margin bell in characters from right end" },
{ "-/+nul",                "turn on/off display of underlining" },
{ "-/+aw",                 "turn on/off auto wraparound" },
{ "-/+rw",                 "turn on/off reverse wraparound" },
{ "-/+s",                  "turn on/off multiscroll" },
{ "-/+sb",                 "turn on/off scrollbar" },
{ "-/+sf",                 "turn on/off Sun Function Key escape codes" },
{ "-/+si",                 "turn on/off scroll-on-tty-output inhibit" },
{ "-/+sk",                 "turn on/off scroll-on-keypress" },
{ "-sl number",            "number of scrolled lines to save" },
{ "-tm string",            "terminal mode keywords and characters" },
{ "-tn name",              "TERM environment variable name" },
{ "-/+ulc",                "turn off/on display of underline as color" },
#ifdef UTMP
{ "-/+ut",                 "turn on/off utmp inhibit" },
#else
{ "-/+ut",                 "turn on/off utmp inhibit (not supported)" },
#endif
{ "-/+vb",                 "turn on/off visual bell" },
{ "-/+wf",                 "turn on/off wait for map before command exec" },
{ "-e command args ...",   "command to execute" },
#ifdef      _WSYANG
/* addition by wsyang for supporting Wansung font */
{ "-ks",                 "use Hangul Wansung font (-kst for Trigem Wansung font)" },
/* the end of patch for Wansung font*/
#endif

{ "#geom",                 "icon window geometry" },
{ "-T string",             "title name for window" },
{ "-n string",             "icon name for window" },
#if defined(TIOCCONS) || defined(SRIOCSREDIR)
{ "-C",                    "intercept console messages" },
#else
{ "-C",                    "intercept console messages (not supported)" },
#endif
{ "-Sxxd",                 "slave mode on \"ttyxx\", file descriptor \"d\"" },
#if !defined(NO_PATCH_UTF8) /* by hanmaum 1998.2.5 */
{ "-hc",             "Hangul code, 0:WanSung, 1:Johab, 2:UTF-8" },
#else
{ "-hc",             "Hangul code, 0:WanSung, 1:Johab" },
#endif
/* added by ysyun@bulsai.kaist.ac.kr */
{ "-bc",                   "Use bright(bold) color rather than ansi 16 color" },
{ NULL, NULL }};

static char *message[] = {
"Fonts must be fixed width and, if both normal and bold are specified, must",
"have the same size.  If only a normal font is specified, it will be used for",
"both normal and bold text (by doing overstriking).  The -e option, if given,",
"must appear at the end of the command line, otherwise the user's default shell",
"will be started.  Options that start with a plus sign (+) restore the default.",
NULL};

#ifndef USE_TERMIOS
static remove_termcap_entry ();
#endif

static int abbrev (tst, cmp)
  char *tst, *cmp;
{
    size_t len = strlen(tst);
    return ((len >= 2) && (!strncmp(tst, cmp, len)));
}

static Syntax (badOption)
    char *badOption;
{
    struct _options *opt;
    int col;

    fprintf (stderr, "%s:  bad command line option \"%s\"\r\n\n",
           ProgramName, badOption);

    fprintf (stderr, "usage:  %s", ProgramName);
    col = 8 + strlen(ProgramName);
    for (opt = options; opt->opt; opt++) {
      int len = 3 + strlen(opt->opt);      /* space [ string ] */
      if (col + len > 79) {
          fprintf (stderr, "\r\n   ");  /* 3 spaces */
          col = 3;
      }
      fprintf (stderr, " [%s]", opt->opt);
      col += len;
    }

    fprintf (stderr, "\r\n\nType %s -help for a full description.\r\n\n",
           ProgramName);
    exit (1);
}

static Version ()
{
    printf("%s %s %s %s\n", HANTERM_PRODUCT, HANTERM_VERSION,
          HANTERM_RELEASE, HANTERM_RELEASEDATE);
    exit (0);
}
static Help ()
{
    struct _options *opt;
    char **cpp;

    fprintf (stderr, "%s %s %s %s usage:\n        %s [-options ...] [-e command args]\n\n",
           HANTERM_PRODUCT, HANTERM_VERSION, HANTERM_RELEASE,
           HANTERM_RELEASEDATE, ProgramName);
    fprintf (stderr, "where options include:\n");
    for (opt = options; opt->opt; opt++) {
      fprintf (stderr, "    %-28s %s\n", opt->opt, opt->desc);
    }

    putc ('\n', stderr);
    for (cpp = message; *cpp; cpp++) {
      fputs (*cpp, stderr);
      putc ('\n', stderr);
    }
    putc ('\n', stderr);

    exit (0);
}

#if defined(TIOCCONS) || defined(SRIOCSREDIR)
/* ARGSUSED */
static Boolean
ConvertConsoleSelection(w, selection, target, type, value, length, format)
    Widget w;
    Atom *selection, *target, *type;
    XtPointer *value;
    unsigned long *length;
    int *format;
{
    /* we don't save console output, so can't offer it */
    return False;
}
#endif /* TIOCCONS || SRIOCSREDIR */


extern WidgetClass xtermWidgetClass;

Arg ourTopLevelShellArgs[] = {
      { XtNallowShellResize, (XtArgVal) TRUE }, 
      { XtNinput, (XtArgVal) TRUE },
};
int number_ourTopLevelShellArgs = 2;
      
XtAppContext app_con;
Widget toplevel;
Bool waiting_for_initial_map;

/* addition by wsyang for supporting Wansung fonts : 3, 1994*/
int font_ks_mode = -1;
int font_jo_mode = False;     /* by ysyun@bulsai.kaist.ac.kr */
Bool can_use_hanja = False;
/**/
Bool BrightColor = False;       /* by ysyun@bulsai.kaist.ac.kr, 05/05/1999 */

/* addition by hanmaum for X Server that doesn't allow zero width char font */
/* : 1998.2.2 */
#if !defined(NO_PATCH_FONT_JOHABNZ)
int font_no_zero_width_char = 0;
int font_minus_width_char_byte1 = 0;
int font_minus_width_char_byte2 = 0;
#endif

#ifdef ALLOWLOGFILEONOFF
extern void StartLog();
extern void CloseLog();
#endif

extern void Setenv ();

extern void do_hangup();
extern void xt_error();

/*
 * DeleteWindow(): Action proc to implement ICCCM delete_window.
 */
/* ARGSUSED */
void
DeleteWindow(w, event, params, num_params)
    Widget w;
    XEvent *event;
    String *params;
    Cardinal *num_params;
{
    do_hangup(w);
}

/* ARGSUSED */
void
KeyboardMapping(w, event, params, num_params)
    Widget w;
    XEvent *event;
    String *params;
    Cardinal *num_params;
{
    switch (event->type) {
       case MappingNotify:
        XRefreshKeyboardMapping(&event->xmapping);
        break;
    }
}

XtActionsRec actionProcs[] = {
    "DeleteWindow", DeleteWindow,
    "KeyboardMapping", KeyboardMapping,
};

Atom wm_delete_window;

main (argc, argv)
int argc;
char **argv;
{
      register TScreen *screen;
      register int i, pty;
      int Xsocket, mode;
      char *base_name(), *ptr;
      int xerror(), xioerror();

      /* Do these first, since we may not be able to open the display */
      ProgramName = argv[0];
      if (argc > 1) {
          if (abbrev(argv[1], "-version"))
            Version();
          if (abbrev(argv[1], "-help"))
            Help();
      }

      /* +2 in case longer tty name like /dev/ttyq255 */
      ttydev = (char *) malloc (strlen (TTYDEV) + 2);
      ptydev = (char *) malloc (strlen (PTYDEV) + 2);
      if (!ttydev || !ptydev) {
          fprintf (stderr, 
                 "%s:  unable to allocate memory for ttydev or ptydev\n",
                 ProgramName);
          exit (1);
      }
      strcpy (ttydev, TTYDEV);
      strcpy (ptydev, PTYDEV);

#ifdef USE_SYSV_TERMIO
      /* Initialization is done here rather than above in order
      ** to prevent any assumptions about the order of the contents
      ** of the various terminal structures (which may change from
      ** implementation to implementation).
      */
#if defined(macII) || defined(ATT) || defined(CRAY)
      d_tio.c_iflag = ICRNL|IXON;
      d_tio.c_oflag = OPOST|ONLCR|TAB3;
#if defined(macII) || defined(ATT) || defined(CRAY)
      d_tio.c_cflag = B9600|CS8|CREAD|PARENB|HUPCL;
      d_tio.c_lflag = ISIG|ICANON|ECHO|ECHOE|ECHOK;
#endif
#ifdef ECHOKE
        d_tio.c_lflag |= ECHOKE|IEXTEN;
#endif
#ifdef ECHOCTL
        d_tio.c_lflag |= ECHOCTL|IEXTEN;
#endif

#ifndef USE_TERMIOS
      d_tio.c_line = 0;
#endif

      d_tio.c_cc[VINTR] = CINTR;
      d_tio.c_cc[VQUIT] = CQUIT;
      d_tio.c_cc[VERASE] = CERASE;
      d_tio.c_cc[VKILL] = CKILL;
      d_tio.c_cc[VEOF] = CEOF;
      d_tio.c_cc[VEOL] = CNUL;
      d_tio.c_cc[VEOL2] = CNUL;
      d_tio.c_cc[VSWTCH] = CNUL;

#ifdef USE_TERMIOS
      d_tio.c_cc[VSUSP] = CSUSP;
      d_tio.c_cc[VDSUSP] = CDSUSP;
      d_tio.c_cc[VREPRINT] = CRPRNT;
      d_tio.c_cc[VDISCARD] = CFLUSH;
      d_tio.c_cc[VWERASE] = CWERASE;
      d_tio.c_cc[VLNEXT] = CLNEXT;
#endif
#ifdef TIOCSLTC
        d_ltc.t_suspc = CSUSP;            /* t_suspc */
        d_ltc.t_dsuspc = CDSUSP;    /* t_dsuspc */
        d_ltc.t_rprntc = CRPRNT;
        d_ltc.t_flushc = CFLUSH;
        d_ltc.t_werasc = CWERASE;
        d_ltc.t_lnextc = CLNEXT;
#endif /* TIOCSLTC */
#ifdef TIOCLSET
      d_lmode = 0;
#endif /* TIOCLSET */
#else  /* else !macII */
#ifdef BAUD_0
      d_tio.c_cflag = CS8|CREAD|PARENB|HUPCL;
#else /* !BAUD_0 */
      d_tio.c_cflag = B9600|CS8|CREAD|PARENB|HUPCL;
#endif      /* !BAUD_0 */
      d_tio.c_lflag = ISIG|ICANON|ECHO|ECHOE|ECHOK;
#ifdef ECHOKE
        d_tio.c_lflag |= ECHOKE|IEXTEN;
#endif
#ifdef ECHOCTL
        d_tio.c_lflag |= ECHOCTL|IEXTEN;
#endif
#ifdef NTTYDISC
        d_tio.c_line = NTTYDISC;
#else
      d_tio.c_line = 0;
#endif
#ifdef sgi
        d_tio.c_cflag &= ~(HUPCL|PARENB);
        d_tio.c_iflag |= BRKINT|ISTRIP|IGNPAR;
#endif
      d_tio.c_cc[VINTR] = 'C' & 0x3f;
      d_tio.c_cc[VERASE] = 0x7f;
      d_tio.c_cc[VKILL] = 'U' & 0x3f;
      d_tio.c_cc[VQUIT] = CQUIT;
      d_tio.c_cc[VEOF] = CEOF;
      d_tio.c_cc[VEOL] = CEOL;
#ifdef VSWTCH
      d_tio.c_cc[VSWTCH] = CSWTCH;
#endif      /* VSWTCH */
#ifdef VLNEXT
        d_tio.c_cc[VLNEXT] = CLNEXT;
#endif
#ifdef VWERASE
        d_tio.c_cc[VWERASE] = CWERASE;
#endif
#ifdef VREPRINT
        d_tio.c_cc[VREPRINT] = CRPRNT;
#endif
#ifdef VRPRNT
        d_tio.c_cc[VRPRNT] = CRPRNT;
#endif
#ifdef VDISCARD
        d_tio.c_cc[VDISCARD] = CFLUSH;
#endif
#ifdef VFLUSHO
        d_tio.c_cc[VFLUSHO] = CFLUSH;
#endif
#ifdef VSTOP
        d_tio.c_cc[VSTOP] = CSTOP;
#endif
#ifdef VSTART
        d_tio.c_cc[VSTART] = CSTART;
#endif
#ifdef VSUSP
        d_tio.c_cc[VSUSP] = CSUSP;
#endif
#ifdef VDSUSP
        d_tio.c_cc[VDSUSP] = CDSUSP;
#endif

      /* now, try to inherit tty settings */
      {
          int i;

          for (i = 0; i <= 2; i++) {
            struct termio deftio;
            if (ioctl (i, TCGETA, &deftio) == 0) {
                d_tio.c_cc[VINTR] = deftio.c_cc[VINTR];
                d_tio.c_cc[VQUIT] = deftio.c_cc[VQUIT];
                d_tio.c_cc[VERASE] = deftio.c_cc[VERASE];
                d_tio.c_cc[VKILL] = deftio.c_cc[VKILL];
                d_tio.c_cc[VEOF] = deftio.c_cc[VEOF];
                d_tio.c_cc[VEOL] = deftio.c_cc[VEOL];
#ifdef VSWTCH
                d_tio.c_cc[VSWTCH] = deftio.c_cc[VSWTCH];
#endif /* VSWTCH */
#ifdef VEOL2
                    d_tio.c_cc[VEOL2] = deftio.c_cc[VEOL2];
#endif
#ifdef VLNEXT
                    d_tio.c_cc[VLNEXT] = deftio.c_cc[VLNEXT];
#endif
#ifdef VWERASE
                    d_tio.c_cc[VWERASE] = deftio.c_cc[VWERASE];
#endif
#ifdef VREPRINT
                    d_tio.c_cc[VREPRINT] = deftio.c_cc[VREPRINT];
#endif
#ifdef VRPRNT
                    d_tio.c_cc[VRPRNT] = deftio.c_cc[VRPRNT];
#endif
#ifdef VDISCARD
                    d_tio.c_cc[VDISCARD] = deftio.c_cc[VDISCARD];
#endif
#ifdef VFLUSHO
                    d_tio.c_cc[VFLUSHO] = deftio.c_cc[VFLUSHO];
#endif
#ifdef VSTOP
                    d_tio.c_cc[VSTOP] = deftio.c_cc[VSTOP];
#endif
#ifdef VSTART
                    d_tio.c_cc[VSTART] = deftio.c_cc[VSTART];
#endif
#ifdef VSUSP
                    d_tio.c_cc[VSUSP] = deftio.c_cc[VSUSP];
#endif
#ifdef VDSUSP
                    d_tio.c_cc[VDSUSP] = deftio.c_cc[VDSUSP];
#endif
                break;
            }
          }
      }
#ifdef TIOCSLTC
        d_ltc.t_suspc = '\000';           /* t_suspc */
        d_ltc.t_dsuspc = '\000';    /* t_dsuspc */
        d_ltc.t_rprntc = '\377';    /* reserved...*/
        d_ltc.t_flushc = '\377';
        d_ltc.t_werasc = '\377';
        d_ltc.t_lnextc = '\377';
#endif      /* TIOCSLTC */
#ifdef USE_TERMIOS
      d_tio.c_cc[VSUSP] = '\000';
        d_tio.c_cc[VDSUSP] = '\000';
        d_tio.c_cc[VREPRINT] = '\377';
        d_tio.c_cc[VDISCARD] = '\377';
        d_tio.c_cc[VWERASE] = '\377';
        d_tio.c_cc[VLNEXT] = '\377';
#endif
#ifdef TIOCLSET
      d_lmode = 0;
#endif      /* TIOCLSET */
#endif  /* macII */
#endif      /* USE_SYSV_TERMIO */

      /* Init the Toolkit. */
      XtSetErrorHandler(xt_error);

      if ((ptr = (char*)malloc (strlen("HANX_INPUT_DISABLE=1")+1)) == NULL)
      {
            perror ("malloc for putenv");
            exit (1);
      }
      strcpy (ptr, "HANX_INPUT_DISABLE=1");
      if (putenv (ptr))
      {
            perror ("putenv");
            free (ptr);
            exit (1);
      }

      if ((ptr = (char*)malloc (strlen("HANX_OUTPUT_DISABLE=1")+1)) == NULL)
      {
            perror ("malloc for putenv");
            exit (1);
      }
      strcpy (ptr, "HANX_OUTPUT_DISABLE=1");
      if (putenv (ptr))
      {
            perror ("putenv");
            free (ptr);
            exit (1);
      }

      toplevel = XtAppInitialize (&app_con, "Hanterm", 
                            optionDescList, XtNumber(optionDescList), 
                            &argc, argv, fallback_resources, NULL, 0);

      XtGetApplicationResources(toplevel, (XtPointer) &resource,
                          application_resources,
                          XtNumber(application_resources), NULL, 0);

      waiting_for_initial_map = resource.wait_for_map;

      /*
       * ICCCM delete_window.
       */
      XtAppAddActions(app_con, actionProcs, XtNumber(actionProcs));

      /*
       * fill in terminal modes
       */
      if (resource.tty_modes) {
          int n = parse_tty_modes (resource.tty_modes, ttymodelist);
          if (n < 0) {
            fprintf (stderr, "%s:  bad tty modes \"%s\"\n",
                   ProgramName, resource.tty_modes);
          } else if (n > 0) {
            override_tty_modes = 1;
          }
      }

      xterm_name = resource.xterm_name;
      sunFunctionKeys = resource.sunFunctionKeys;
      if (strcmp(xterm_name, "-") == 0) xterm_name = "hanterm";
      if (resource.icon_geometry != NULL) {
          int scr, junk;
          int ix, iy;
          Arg args[2];

          for(scr = 0;  /* yyuucchh */
            XtScreen(toplevel) != ScreenOfDisplay(XtDisplay(toplevel),scr);
            scr++);

          args[0].name = XtNiconX;
          args[1].name = XtNiconY;
          XGeometry(XtDisplay(toplevel), scr, resource.icon_geometry, "",
                  0, 0, 0, 0, 0, &ix, &iy, &junk, &junk);
          args[0].value = (XtArgVal) ix;
          args[1].value = (XtArgVal) iy;
          XtSetValues( toplevel, args, 2);
      }

      XtSetValues (toplevel, ourTopLevelShellArgs, 
                 number_ourTopLevelShellArgs);


      /* Parse the rest of the command line */
      for (argc--, argv++ ; argc > 0 ; argc--, argv++) {
          if(**argv != '-') Syntax (*argv);

          switch(argv[0][1]) {
/* addition by wsyang for supporting Wansung Hangul fonts : 3, 1994*/
            case 'k':
              if (argv[0][2] != 's') Syntax(*argv);
              font_ks_mode = argv[0][3];
              can_use_hanja = True;
              /* break; /* by ysyun */
              continue;
/* the end of patch for Wansung Hangul fonts*/

              /* added by ysyun@bulsai, 05/05/1999 */
              case 'b':
                if( argv[0][2] == 'c' )
                   BrightColor = True;
                continue;
             /* end of addition */

           case 'h':
            Help ();
            /* NOTREACHED */
           case 'C':
#if defined (TIOCCONS) || defined (SRIOCSREDIR)
#ifndef sgi
            {
                struct stat sbuf;

                /* Must be owner and have read/write permission.
                   xdm cooperates to give the console the right user. */
                if ( !stat("/dev/console", &sbuf) &&
                   (sbuf.st_uid == getuid()) &&
                   !access("/dev/console", R_OK|W_OK))
                {
                  Console = TRUE;
                } else
                  Console = FALSE;
            }
#else /* sgi */
            Console = TRUE;
#endif
#endif      /* TIOCCONS */
            continue;
           case 'S':
            if (sscanf(*argv + 2, "%c%c%d", passedPty, passedPty+1,
                     &am_slave) != 3)
                Syntax(*argv);
            continue;
#ifdef DEBUG
           case 'D':
            debug = TRUE;
            continue;
#endif      /* DEBUG */
           case 'e':
            if (argc <= 1) Syntax (*argv);
            command_to_exec = ++argv;
            break;
           default:
            Syntax (*argv);
          }
          break;
      }

      XawSimpleMenuAddGlobalActions (app_con);
      XtRegisterGrabAction (HandlePopupMenu, True,
                        (ButtonPressMask|ButtonReleaseMask),
                        GrabModeAsync, GrabModeAsync);

        term = (XtermWidget) XtCreateManagedWidget(
          "vt100", xtermWidgetClass, toplevel, NULL, 0);
            /* this causes the initialize method to be called */

        screen = &term->screen;

      /*
       * Need to initialize for later garbage collection
       * Daeshik Kim (dkim@surecom.com) - DKIM
       */
      screen->fnt_norm = screen->fnt_bold = screen->fnt_hangul = NULL;

      if (screen->savelines < 0) screen->savelines = 0;

      term->flags = 0;
      if (!screen->jumpscroll) {
          term->flags |= SMOOTHSCROLL;
          update_jumpscroll();
      }
      if (term->misc.reverseWrap) {
          term->flags |= REVERSEWRAP;
          update_reversewrap();
      }
      if (term->misc.autoWrap) {
          term->flags |= WRAPAROUND;
          update_autowrap();
      }
      if (term->misc.re_verse) {
          term->flags |= REVERSE_VIDEO;
          update_reversevideo();
      }

      inhibit = 0;
#ifdef ALLOWLOGFILEONOFF
      if (term->misc.logInhibit)        inhibit |= I_LOG;
#endif
      if (term->misc.signalInhibit)       inhibit |= I_SIGNAL;

      term->initflags = term->flags;

      if (term->misc.appcursorDefault) {
          term->keyboard.flags |= CURSOR_APL;
          update_appcursor();
      }

      if (term->misc.appkeypadDefault) {
          term->keyboard.flags |= KYPD_APL;
          update_appkeypad();
      }
#ifdef ENV_HANGUL_KEYBOARD_TYPE
        /*
         * Set hangul keyboard type from environment variable
         * as supposed by Ryu, Chang-Woo. Refer
         * http://www.mizi.co.kr/info/hankbd.htm
         */
        if ((ptr = getenv("HANGUL_KEYBOARD_TYPE")) && *ptr ) {
            if (!strcmp(ptr, "3")) {
                term->screen.keyboard = 390;
            } 
            else if (!strcmp(ptr, "390")) {
                term->screen.keyboard = 390;
            } 
            else if (!strcmp(ptr, "391")) {
                term->screen.keyboard = 391;
            } 
            else if (!strcasecmp(ptr, "3FINAL")) {
                term->screen.keyboard = 391;
            } 
            else {
                term->screen.keyboard = 2;
            }
        }
#endif

/*
 * Set title and icon name if not specified
 */

      if (command_to_exec) {
          Arg args[2];

          if (!resource.title) {
            if (command_to_exec) {
                resource.title = base_name (command_to_exec[0]);
            } /* else not reached */
          }

          if (!resource.icon_name) 
            resource.icon_name = resource.title;
          XtSetArg (args[0], XtNtitle, resource.title);
          XtSetArg (args[1], XtNiconName, resource.icon_name);          

          XtSetValues (toplevel, args, 2);
      }


#ifdef DEBUG
    {
      /* set up stderr properly */
      i = -1;
      if(debug) {
            creat_as (getuid(), getgid(), "hanterm.debug.log", 0666);
            i = open ("hanterm.debug.log", O_WRONLY | O_CREAT | O_TRUNC,
             0666);
      }
      if(i >= 0) {
#if defined(USE_SYSV_TERMIO) && !defined(SVR4) && !defined(linux)
            /* SYSV has another pointer which should be part of the
            ** FILE structure but is actually a seperate array.
            */
            unsigned char *old_bufend;

            old_bufend = (unsigned char *) _bufend(stderr);
#ifdef hpux
            stderr->__fileL = i;
            stderr->__fileH = 0;
#else
            stderr->_file = i;
#endif
            _bufend(stderr) = old_bufend;
#else /* USE_SYSV_TERMIO */
#ifndef linux
            stderr->_file = i;
#else
            setfileno(stderr, i);
#endif
#endif      /* USE_SYSV_TERMIO */

            /* mark this file as close on exec */
            (void) fcntl(i, F_SETFD, 1);
      }
    }
#endif      /* DEBUG */

      /* open a terminal for client */
      get_terminal ();
      spawn ();
      /* Child process is out there, let's catch its termination */
      signal (SIGCHLD, reapchild);

      /* Realize procs have now been executed */

      Xsocket = ConnectionNumber(screen->display);
      pty = screen->respond;

      if (am_slave) { /* Write window id so master end can read and use */
          char buf[80];

          buf[0] = '\0';
          sprintf (buf, "%lx\n", XtWindow (XtParent (term)));
          write (pty, buf, strlen (buf));
      }

#ifdef ALLOWLOGFILEONOFF
      if (term->misc.log_on) {
            StartLog(screen);
      }
#endif
      screen->inhibit = inhibit;

#ifdef AIXV3
#if OSMAJORVERSION < 4
      /* In AIXV3, xterms started from /dev/console have CLOCAL set.
       * This means we need to clear CLOCAL so that SIGHUP gets sent
       * to the slave-pty process when xterm exits.
       */

      {
          struct termio tio;

          if(ioctl(pty, TCGETA, &tio) == -1)
              SysError(ERROR_TIOCGETP);

          tio.c_cflag &= ~(CLOCAL);

          if (ioctl (pty, TCSETA, &tio) == -1)
              SysError(ERROR_TIOCSETP);
      }
#endif
#endif
#ifdef USE_SYSV_TERMIO
      if (0 > (mode = fcntl(pty, F_GETFL, 0)))
            Error();
#ifdef O_NDELAY
      mode |= O_NDELAY;
#else
      mode |= O_NONBLOCK;
#endif /* O_NDELAY */
      if (fcntl(pty, F_SETFL, mode))
            Error();
#else /* USE_SYSV_TERMIO */
      mode = 1;
      if (ioctl (pty, FIONBIO, (char *)&mode) == -1) SysError (ERROR_FIONBIO);
#endif      /* USE_SYSV_TERMIO */
      
#if defined(linux)||defined(SVR4)||(defined(hpux)&&OSMAJORVERSION>=10)
      pty_mask = pty;
      X_mask = Xsocket;
      FD_ZERO(&Select_mask);
      FD_SET(pty, &Select_mask);
      FD_SET(Xsocket, &Select_mask);
#else
      pty_mask = 1 << pty;
      X_mask = 1 << Xsocket;
      Select_mask = pty_mask | X_mask;
#endif
      max_plus1 = (pty < Xsocket) ? (1 + Xsocket) : (1 + pty);

#ifdef DEBUG
      if (debug) printf ("debugging on\n");
#endif      /* DEBUG */
      XSetErrorHandler(xerror);
      XSetIOErrorHandler(xioerror);
      for( ; ; ) {
          VTRun();
      }
}

char *base_name(name)
char *name;
{
      register char *cp;

      cp = rindex(name, '/');
      return(cp ? cp + 1 : name);
}

/* This function opens up a pty master and stuffs its value into pty.
 * If it finds one, it returns a value of 0.  If it does not find one,
 * it returns a value of !0.  This routine is designed to be re-entrant,
 * so that if a pty master is found and later, we find that the slave
 * has problems, we can re-enter this function and get another one.
 */

get_pty (pty)
    int *pty;
{
#if defined(SYSV) && defined(i386) && !defined(SVR4)
        /*
        The order of this code is *important*.  On SYSV/386 we want to open
        a /dev/ttyp? first if at all possible.  If none are available, then
        we'll try to open a /dev/pts??? device.
        
        The reason for this is because /dev/ttyp? works correctly, where
        as /dev/pts??? devices have a number of bugs, (won't update
        screen correcly, will hang -- it more or less works, but you
        really don't want to use it).
        
        Most importantly, for boxes of this nature, one of the major
        "features" is that you can emulate a 8086 by spawning off a UNIX
        program on 80386/80486 in v86 mode.  In other words, you can spawn
        off multiple MS-DOS environments.  On ISC the program that does
        this is named "vpix."  The catcher is that "vpix" will *not* work
        with a /dev/pts??? device, will only work with a /dev/ttyp? device.
        
        Since we can open either a /dev/ttyp? or a /dev/pts??? device,
        the flag "IsPts" is set here so that we know which type of
        device we're dealing with in routine spawn().  That's the reason
        for the "if (IsPts)" statement in spawn(); we have two different
        device types which need to be handled differently.
        */
        if (pty_search(pty) == 0)
          return 0;
#endif /* SYSV && i386 !SVR4 */
#if defined(ATT) && !defined(sgi)
      if ((*pty = open ("/dev/ptmx", O_RDWR)) < 0) {
          return 1;
      }
#if defined(SVR4) || defined(i386)
      strcpy(ttydev, ptsname(*pty));
#if defined (SYSV) && defined(i386) && !defined(SVR4)
      IsPts = True;
#endif
#endif
      return 0;
#else /* ATT else */
#ifdef AIXV3
      if ((*pty = open ("/dev/ptc", O_RDWR)) < 0) {
          return 1;
      }
      strcpy(ttydev, ttyname(*pty));
      return 0;
#endif
#if defined(sgi) && OSMAJORVERSION >= 4
      {
          char    *tty_name;

          tty_name = _getpty (pty, O_RDWR, 0622, 0);
          if (tty_name == 0)
              return 1;
          strcpy (ttydev, tty_name);
          return 0;
      }
#endif
#ifdef __convex__
        {
          char *pty_name, *getpty();

          while ((pty_name = getpty()) != NULL) {
            if ((*pty = open (pty_name, O_RDWR)) >= 0) {
                strcpy(ptydev, pty_name);
                strcpy(ttydev, pty_name);
                ttydev[5] = 't';
                return 0;
            }
          }
          return 1;
      }
#endif /* __convex__ */
#ifdef USE_GET_PSEUDOTTY
      return ((*pty = getpseudotty (&ttydev, &ptydev)) >= 0 ? 0 : 1);
#else
#if ((defined(sgi) && OSMAJORVERSION < 4) || (defined(umips) && defined (SYSTYPE_SYSV)))
      struct stat fstat_buf;

      *pty = open ("/dev/ptc", O_RDWR);
      if (*pty < 0 || (fstat (*pty, &fstat_buf)) < 0) {
        return(1);
      }
      sprintf (ttydev, "/dev/ttyq%d", minor(fstat_buf.st_rdev));
#ifndef sgi
      sprintf (ptydev, "/dev/ptyq%d", minor(fstat_buf.st_rdev));
      if ((*tty = open (ttydev, O_RDWR)) < 0) {
        close (*pty);
        return(1);
      }
#endif /* !sgi */
      /* got one! */
      return(0);
#else /* sgi or umips */

      return pty_search(pty);

#endif /* sgi or umips else */
#endif /* USE_GET_PSEUDOTTY else */
#endif /* ATT else */
}

/*
 * Called from get_pty to iterate over likely pseudo terminals
 * we might allocate.  Used on those systems that do not have
 * a functional interface for allocating a pty.
 * Returns 0 if found a pty, 1 if fails.
 */

int pty_search(pty)
    int *pty;
{
    static int devindex, letter = 0;

#ifdef CRAY
    for (; devindex < 256; devindex++) {
      sprintf (ttydev, "/dev/ttyp%03d", devindex);
      sprintf (ptydev, "/dev/pty/%03d", devindex);

      if ((*pty = open (ptydev, O_RDWR)) >= 0) {
          /* We need to set things up for our next entry
           * into this function!
           */
          (void) devindex++;
      }
    }
#else /* CRAY */
    while (PTYCHAR1[letter]) {
        ttydev [strlen(ttydev) - 2]  = ptydev [strlen(ptydev) - 2] =
            PTYCHAR1 [letter];

        while (PTYCHAR2[devindex]) {
            ttydev [strlen(ttydev) - 1] = ptydev [strlen(ptydev) - 1] =
                PTYCHAR2 [devindex];
            /* for next time around loop or next entry to this function */
            devindex++;
            if ((*pty = open (ptydev, O_RDWR)) >= 0) {
#ifdef sun
                /* Need to check the process group of the pty.
                 * If it exists, then the slave pty is in use,
                 * and we need to get another one.
                 */
                int pgrp_rtn;
                if (ioctl(*pty, TIOCGPGRP, &pgrp_rtn) == 0 || errno != EIO) {
                    close(*pty);
                    continue;
                }
#endif /* sun */
                return 0;
            }
        }
      devindex = 0;
      (void) letter++;
    }
#endif      /* CRAY else */
    /*
     * We were unable to allocate a pty master!  Return an error
     * condition and let our caller terminate cleanly.
     */
    return 1;
}

get_terminal ()
/* 
 * sets up X and initializes the terminal structure except for term.buf.fildes.
 */
{
      register TScreen *screen = &term->screen;
      
      screen->arrow = make_colored_cursor (XC_left_ptr, 
                                   screen->mousecolor,
                                   screen->mousecolorback);
}

/* The VT102 is a VT100 with the Advanced Video Option included standard.
 * It also adds Escape sequences for insert/delete character/line.
 * The VT220 adds 8-bit character sets, selective erase.
 * The VT320 adds a 25th status line, terminal state interrogation.
 * The VT420 has up to 48 lines on the screen.
 */

static char *vtterm[] = {
#ifdef USE_X11TERM
      "x11term",        /* for people who want special term name */
#endif
      "xterm",          /* the prefered name, should be fastest */
      "vt102",
      "vt100",
      "ansi",
      "dumb",
      0
};

/* ARGSUSED */
SIGNAL_T hungtty(i)
      int i;
{
      longjmp(env, 1);
      SIGNAL_RETURN;
}

/*
 * declared outside USE_HANDSHAKE so HsSysError() callers can use
 */
static int pc_pipe[2];  /* this pipe is used for parent to child transfer */
static int cp_pipe[2];  /* this pipe is used for child to parent transfer */

#ifdef USE_HANDSHAKE
typedef enum {          /* c == child, p == parent                        */
      PTY_BAD,    /* c->p: can't open pty slave for some reason     */
      PTY_FATALERROR,   /* c->p: we had a fatal error with the pty        */
      PTY_GOOD,   /* c->p: we have a good pty, let's go on          */
      PTY_NEW,    /* p->c: here is a new pty slave, try this        */
      PTY_NOMORE, /* p->c; no more pty's, terminate                 */
      UTMP_ADDED, /* c->p: utmp entry has been added                */
      UTMP_TTYSLOT,     /* c->p: here is my ttyslot                       */
      PTY_EXEC    /* p->c: window has been mapped the first time    */
} status_t;

typedef struct {
      status_t status;
      int error;
      int fatal_error;
      int tty_slot;
      int rows;
      int cols;
      char buffer[1024];
} handshake_t;

/* HsSysError()
 *
 * This routine does the equivalent of a SysError but it handshakes
 * over the errno and error exit to the master process so that it can
 * display our error message and exit with our exit code so that the
 * user can see it.
 */

void
HsSysError(pf, error)
int pf;
int error;
{
      handshake_t handshake;

      handshake.status = PTY_FATALERROR;
      handshake.error = errno;
      handshake.fatal_error = error;
      strcpy(handshake.buffer, ttydev);
      write(pf, (char *) &handshake, sizeof(handshake));
      exit(error);
}

void first_map_occurred ()
{
    handshake_t handshake;
    register TScreen *screen = &term->screen;

    handshake.status = PTY_EXEC;
    handshake.rows = screen->max_row;
    handshake.cols = screen->max_col;
    write (pc_pipe[1], (char *) &handshake, sizeof(handshake));
    close (cp_pipe[0]);
    close (pc_pipe[1]);
    waiting_for_initial_map = False;
}
#else
void
HsSysError(pf, error)
    int pf;
    int error;
{
    fprintf(stderr, "%s: fatal pty error %d (errno=%d) on tty %s\n",
            xterm_name, error, errno, ttydev);
    exit(error);
}

/*
 * temporary hack to get xterm working on att ptys
 */
void first_map_occurred ()
{
    return;
}
#endif /* USE_HANDSHAKE else !USE_HANDSHAKE */


spawn ()
/* 
 *  Inits pty and tty and forks a login process.
 *  Does not close fd Xsocket.
 *  If slave, the pty named in passedPty is already open for use
 */
{
      extern char *SysErrorMsg();
      register TScreen *screen = &term->screen;
      int Xsocket = ConnectionNumber(screen->display);
#ifdef USE_HANDSHAKE
      handshake_t handshake;
#else
      int fds[2];
#endif
      int tty = -1;
      int discipline;
      int done;
#ifdef USE_SYSV_TERMIO
      struct termio tio;
      struct termio dummy_tio;
#ifdef TIOCLSET
      unsigned lmode;
#endif      /* TIOCLSET */
#ifdef TIOCSLTC
      struct ltchars ltc;
#endif      /* TIOCSLTC */
      int one = 1;
      int zero = 0;
      int status;
#else /* else not USE_SYSV_TERMIO */
      unsigned lmode;
      struct tchars tc;
      struct ltchars ltc;
      struct sgttyb sg;
#ifdef sony
      int jmode;
      struct jtchars jtc;
#endif /* sony */
#endif      /* USE_SYSV_TERMIO */

#ifdef linux
      char termcap [1024];
      char newtc [1024];
#else
#ifndef USE_TERMINFO            /* dkim@surecom.com */
      char termcap [2048];
      char newtc [2048];
#endif
#endif
      char *ptr, *shname, *shname_minus;
      int i, no_dev_tty = FALSE;
#ifdef USE_SYSV_TERMIO
      char *dev_tty_name = (char *) 0;
      int fd;                 /* for /etc/wtmp */
#endif      /* USE_SYSV_TERMIO */
      char **envnew;          /* new environment */
      int envsize;            /* elements in new environment */
      char buf[64];
      char *TermName = NULL;
      int ldisc = 0;
#if defined(sun) && !defined(SVR4)
#ifdef TIOCSSIZE
        struct ttysize ts;
#endif  /* TIOCSSIZE */
#else   /* not sun */
#ifdef TIOCSWINSZ
        struct winsize ws;
#endif  /* TIOCSWINSZ */
#endif  /* sun */
      struct passwd *pw = NULL;
#ifdef UTMP
#ifdef SVR4
        struct utmpx utmp;
#else
        struct utmp utmp;
#endif
#ifdef LASTLOG
      struct lastlog lastlog;
#endif      /* LASTLOG */
#endif      /* UTMP */

      memset (&utmp, '\0', sizeof(utmp));

      screen->uid = getuid();
      screen->gid = getgid();

#ifdef SIGTTOU
      /* so that TIOCSWINSZ || TIOCSIZE doesn't block */
      signal(SIGTTOU,SIG_IGN);
#endif

      if (am_slave) {
            screen->respond = am_slave;
            ptydev[strlen(ptydev) - 2] = ttydev[strlen(ttydev) - 2] =
                  passedPty[0];
            ptydev[strlen(ptydev) - 1] = ttydev[strlen(ttydev) - 1] =
                  passedPty[1];

            setgid (screen->gid);
            setuid (screen->uid);
      } else {
            Bool tty_got_hung = False;

            /*
             * Sometimes /dev/tty hangs on open (as in the case of a pty
             * that has gone away).  Simply make up some reasonable
             * defaults.
             */
            signal(SIGALRM, hungtty);
            alarm(2);         /* alarm(1) might return too soon */
            if (! setjmp(env)) {
                  tty = open ("/dev/tty", O_RDWR, 0);
                  alarm(0);
            } else {
                  tty_got_hung = True;
                  tty = -1;
                  errno = ENXIO;
            }
            signal(SIGALRM, SIG_DFL);
 
            /*
             * Check results and ignore current control terminal if
             * necessary.  ENXIO is what is normally returned if there is
             * no controlling terminal, but some systems (e.g. SunOS 4.0)
             * seem to return EIO.
             */
            if (tty < 0) {
                  if (tty_got_hung || errno == ENXIO || errno == EIO ||
                      errno == ENOTTY) {
                        no_dev_tty = TRUE;
#ifdef TIOCSLTC
                        ltc = d_ltc;
#endif      /* TIOCSLTC */
#ifdef TIOCLSET
                        lmode = d_lmode;
#endif      /* TIOCLSET */
#ifdef USE_SYSV_TERMIO
                        tio = d_tio;
#else /* not USE_SYSV_TERMIO */
                        sg = d_sg;
                        tc = d_tc;
                        discipline = d_disipline;
#ifdef sony
                        jmode = d_jmode;
                        jtc = d_jtc;
#endif /* sony */
#endif      /* USE_SYSV_TERMIO */
                  } else {
                      SysError(ERROR_OPDEVTTY);
                  }
            } else {
                        /* Get a copy of the current terminal's state,
                         * if we can.  Some systems (e.g., SVR4 and MacII)
                         * may not have a controlling terminal at this point
                         * if started directly from xdm or xinit,
                         * in which case we just use the defaults as above.
                         */
#ifdef TIOCSLTC
                  if(ioctl(tty, TIOCGLTC, &ltc) == -1)
                        ltc = d_ltc;
#endif      /* TIOCSLTC */
#ifdef TIOCLSET
                  if(ioctl(tty, TIOCLGET, &lmode) == -1)
                        lmode = d_lmode;
#endif      /* TIOCLSET */
#ifdef USE_SYSV_TERMIO
                        if(ioctl(tty, TCGETA, &tio) == -1)
                                tio = d_tio;

#else /* not USE_SYSV_TERMIO */
                  if(ioctl(tty, TIOCGETP, (char *)&sg) == -1)
                                sg = d_sg;
                  if(ioctl(tty, TIOCGETC, (char *)&tc) == -1)
                                tc = d_tc;
                  if(ioctl(tty, TIOCGETD, (char *)&discipline) == -1)
                                discipline = d_disipline;
#ifdef sony
                  if(ioctl(tty, TIOCKGET, (char *)&jmode) == -1)
                                jmode = d_jmode;
                  if(ioctl(tty, TIOCKGETC, (char *)&jtc) == -1)
                                jtc = d_jtc;
#endif /* sony */
#endif      /* USE_SYSV_TERMIO */
                  close (tty);
                  /* tty is no longer an open fd! */
                  tty = -1;
            }

#ifdef      PUCC_PTYD
            if(-1 == (screen->respond = openrpty(ttydev, ptydev,
                        (resource.utmpInhibit ?  OPTY_NOP : OPTY_LOGIN),
                        getuid(), XDisplayString(screen->display)))) {
#else /* not PUCC_PTYD */
            if (get_pty (&screen->respond)) {
#endif /* PUCC_PTYD */
                  /*  no ptys! */
                  (void) fprintf(stderr, "%s: no available ptys\n",
                               xterm_name);
                  exit (ERROR_PTYS);
#ifdef PUCC_PTYD
            }
#else
            }                 /* keep braces balanced for emacs */
#endif
#ifdef PUCC_PTYD
              else {
                  /*
                   *  set the fd of the master in a global var so
                   *  we can undo all this on exit
                   *
                   */
                  Ptyfd = screen->respond;
              }
#endif /* PUCC_PTYD */
      }

      /* avoid double MapWindow requests */
      XtSetMappedWhenManaged( XtParent(term), False );
      wm_delete_window = XInternAtom(XtDisplay(toplevel), "WM_DELETE_WINDOW",
                               False);
      VTInit();         /* realize now so know window size for tty driver */
#if defined(TIOCCONS) || defined (SRIOCSREDIR)
      if (Console) {
          /*
           * Inform any running xconsole program
           * that we are going to steal the console.
           */
          XmuGetHostname (mit_console_name + MIT_CONSOLE_LEN, 255);
          mit_console = XInternAtom(screen->display, mit_console_name, False);
          /* the user told us to be the console, so we can use CurrentTime */
          XtOwnSelection(XtParent(term),
                     mit_console, CurrentTime,
                     ConvertConsoleSelection, NULL, NULL);
      }
#endif
      envnew = vtterm;
      TermName = NULL;

#ifndef USE_TERMINFO            /* dkim@surecom.com */
        ptr = termcap;
#endif
      if (resource.term_name) {
/* dkim@surecom.com */
#ifdef USE_TERMINFO
          int errret;
          if (setupterm (resource.term_name, 1, &errret) == OK) {
            TermName = resource.term_name;
          } else {
            if (errret == 0)
                fprintf (stderr, "%s:  cannot find terminal.\n",
                   ProgramName);
            else
                fprintf (stderr, "%s:  invalid terminfo entry \"%s\".\n",
                   ProgramName, resource.term_name);
            }
#else
          if (tgetent (ptr, resource.term_name) == 1) {
            TermName = resource.term_name;
            resize (screen, TermName, termcap, newtc);
          } else {
            fprintf (stderr, "%s:  invalid termcap entry \"%s\".\n",
                   ProgramName, resource.term_name);
          }
#endif
      }
      if (!TermName) {
/* dkim@surecom.com */
#ifdef USE_TERMINFO
          while (*envnew != NULL) {
            if (setupterm (*envnew, 1, NULL) == OK) {
                TermName = *envnew;
                break;
            }
            envnew++;
          }
          if (TermName == NULL) {
            fprintf (stderr, "%s:  unable to find usable terminfo entry.\n",
                   ProgramName);
            Exit (1);
          }
#else
          while (*envnew != NULL) {
            if(tgetent(ptr, *envnew) == 1) {
                  TermName = *envnew;
                  resize(screen, TermName, termcap, newtc);
                  break;
            }
            envnew++;
          }
          if (TermName == NULL) {
            fprintf (stderr, "%s:  unable to find usable termcap entry.\n",
                   ProgramName);
            Exit (1);
          }
#endif
      }

#if defined(sun) && !defined(SVR4)
#ifdef TIOCSSIZE
      /* tell tty how big window is */
      ts.ts_lines = screen->max_row + 1;
      ts.ts_cols = screen->max_col + 1;
#endif      /* TIOCSSIZE */
#else /* not sun */
#ifdef TIOCSWINSZ
      /* tell tty how big window is */
      ws.ws_row = screen->max_row + 1;
      ws.ws_col = screen->max_col + 1;
      ws.ws_xpixel = FullWidth(screen);
      ws.ws_ypixel = FullHeight(screen);
#endif      /* TIOCSWINSZ */
#endif      /* sun */

      if (!am_slave) {
#ifdef USE_HANDSHAKE
          if (pipe(pc_pipe) || pipe(cp_pipe))
            SysError (ERROR_FORK);
#endif
          if ((screen->pid = fork ()) == -1)
            SysError (ERROR_FORK);
            
          if (screen->pid == 0) {
            /*
             * now in child process
             */
            extern char **environ;
#if defined(_POSIX_SOURCE) || defined(SVR4) || defined(__convex__)
            int pgrp = setsid();
#else
            int pgrp = getpid();
#endif
#ifdef USE_SYSV_TERMIO
            char numbuf[12];
#endif
#if defined(UTMP) && defined(USE_SYSV_UTMP)
            char *ptyname;
#endif

#ifdef USE_USG_PTYS
#if defined(SYSV) && defined(i386) && !defined(SVR4)
                if (IsPts) {  /* SYSV386 supports both, which did we open? */
#endif /* SYSV && i386 && !SVR4 */
            int ptyfd;

            setpgrp();
            grantpt (screen->respond);
            unlockpt (screen->respond);
            if ((ptyfd = open (ptsname(screen->respond), O_RDWR)) < 0) {
                SysError (1);
            }
            if (ioctl (ptyfd, I_PUSH, "ptem") < 0) {
                SysError (2);
            }
#if !defined(SVR4) && !(defined(SYSV) && defined(i386))
            if (!getenv("CONSEM") && ioctl (ptyfd, I_PUSH, "consem") < 0) {
                SysError (3);
            }
#endif /* !SVR4 */
            if (ioctl (ptyfd, I_PUSH, "ldterm") < 0) {
                SysError (4);
            }
#ifdef SVR4             /* from Sony */
            if (ioctl (ptyfd, I_PUSH, "ttcompat") < 0) {
                SysError (5);
            }
#endif /* SVR4 */
            tty = ptyfd;
            close (screen->respond);
#ifdef TIOCSWINSZ
                /* tell tty how big window is */
            ws.ws_row = screen->max_row + 1;
            ws.ws_col = screen->max_col + 1;
            ws.ws_xpixel = FullWidth(screen);
            ws.ws_ypixel = FullHeight(screen);
#endif
#if defined(SYSV) && defined(i386) && !defined(SVR4)
                } else {      /* else pty, not pts */
#endif /* SYSV && i386 && !SVR4 */
#endif /* USE_USG_PTYS */

#ifdef USE_HANDSHAKE          /* warning, goes for a long ways */
            /* close parent's sides of the pipes */
            close (cp_pipe[0]);
            close (pc_pipe[1]);

            /* Make sure that our sides of the pipes are not in the
             * 0, 1, 2 range so that we don't fight with stdin, out
             * or err.
             */
            if (cp_pipe[1] <= 2) {
                  if ((i = fcntl(cp_pipe[1], F_DUPFD, 3)) >= 0) {
                        (void) close(cp_pipe[1]);
                        cp_pipe[1] = i;
                  }
            }
            if (pc_pipe[0] <= 2) {
                  if ((i = fcntl(pc_pipe[0], F_DUPFD, 3)) >= 0) {
                        (void) close(pc_pipe[0]);
                        pc_pipe[0] = i;
                  }
            }

            /* we don't need the socket, or the pty master anymore */
            close (Xsocket);
            close (screen->respond);

            /* Now is the time to set up our process group and
             * open up the pty slave.
             */
#ifdef      USE_SYSV_PGRP
#if defined(CRAY) && (OSMAJORVERSION > 5)
            (void) setsid();
#else
            (void) setpgrp();
#endif
#endif /* USE_SYSV_PGRP */
            while (1) {
#ifdef TIOCNOTTY
                  if (!no_dev_tty && (tty = open ("/dev/tty", O_RDWR)) >= 0) {
                        ioctl (tty, TIOCNOTTY, (char *) NULL);
                        close (tty);
                  }
#endif /* TIOCNOTTY */
                  if ((tty = open(ttydev, O_RDWR, 0)) >= 0) {
#if defined(CRAY) && defined(TCSETCTTY)
                      /* make /dev/tty work */
                      ioctl(tty, TCSETCTTY, 0);
#endif
#ifdef      USE_SYSV_PGRP
                        /* We need to make sure that we are acutally
                         * the process group leader for the pty.  If
                         * we are, then we should now be able to open
                         * /dev/tty.
                         */
                        if ((i = open("/dev/tty", O_RDWR, 0)) >= 0) {
                              /* success! */
                              close(i);
                              break;
                        }
#else /* USE_SYSV_PGRP */
                        break;
#endif      /* USE_SYSV_PGRP */
                  }

#ifdef TIOCSCTTY
                  ioctl(tty, TIOCSCTTY, 0);
#endif
                  /* let our master know that the open failed */
                  handshake.status = PTY_BAD;
                  handshake.error = errno;
                  strcpy(handshake.buffer, ttydev);
                  write(cp_pipe[1], (char *) &handshake,
                      sizeof(handshake));

                  /* get reply from parent */
                  i = read(pc_pipe[0], (char *) &handshake,
                      sizeof(handshake));
                  if (i <= 0) {
                        /* parent terminated */
                        exit(1);
                  }

                  if (handshake.status == PTY_NOMORE) {
                        /* No more ptys, let's shutdown. */
                        exit(1);
                  }

                  /* We have a new pty to try */
                  free(ttydev);
                  ttydev = malloc((unsigned)
                      (strlen(handshake.buffer) + 1));
                  strcpy(ttydev, handshake.buffer);
            }

            /* use the same tty name that everyone else will use
            ** (from ttyname)
            */
            if (ptr = ttyname(tty))
            {
                  /* it may be bigger */
                  ttydev = realloc (ttydev, (unsigned) (strlen(ptr) + 1));
                  (void) strcpy(ttydev, ptr);
            }
#if defined(SYSV) && defined(i386) && !defined(SVR4)
                } /* end of IsPts else clause */
#endif /* SYSV && i386 && !SVR4 */

#endif /* USE_HANDSHAKE -- from near fork */

#ifdef USE_TTY_GROUP
      { 
            struct group *ttygrp;
            if ((ttygrp = getgrnam("tty")) != 0) {
                  /* change ownership of tty to real uid, "tty" gid */
                  chown (ttydev, screen->uid, ttygrp->gr_gid);
                  chmod (ttydev, 0620);
            }
            else {
                  /* change ownership of tty to real group and user id */
                  chown (ttydev, screen->uid, screen->gid);
                  chmod (ttydev, 0622);
            }
            endgrent();
      }
#else /* else !USE_TTY_GROUP */
            /* change ownership of tty to real group and user id */
            chown (ttydev, screen->uid, screen->gid);

            /* change protection of tty */
            chmod (ttydev, 0622);
#endif /* USE_TTY_GROUP */

            /*
             * set up the tty modes
             */
            {
#ifdef USE_SYSV_TERMIO
#if defined(umips) || defined(CRAY) || defined(linux)
                /* If the control tty had its modes screwed around with,
                   eg. by lineedit in the shell, or emacs, etc. then tio
                   will have bad values.  Let's just get termio from the
                   new tty and tailor it.  */
                if (ioctl (tty, TCGETA, &tio) == -1)
                  SysError (ERROR_TIOCGETP);
                tio.c_lflag |= ECHOE;
#endif /* umips */
                /* Now is also the time to change the modes of the
                 * child pty.
                 */
                /* input: nl->nl, don't ignore cr, cr->nl */
                /* -istrip - dkim@surecom.com */
                tio.c_iflag &= ~(INLCR|IGNCR|ISTRIP);
                tio.c_iflag |= ICRNL;
                /* ouput: cr->cr, nl is not return, no delays, ln->cr/nl */
                tio.c_oflag &=
                 ~(OCRNL|ONLRET|NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY);
                tio.c_oflag |= ONLCR;
#ifdef OPOST
                tio.c_oflag |= OPOST;
#endif /* OPOST */                
#ifdef BAUD_0
                /* baud rate is 0 (don't care) */
                tio.c_cflag &= ~(CBAUD);
#else /* !BAUD_0 */
                /* baud rate is 9600 (nice default) */
                tio.c_cflag &= ~(CBAUD);
                tio.c_cflag |= B9600;
#endif      /* !BAUD_0 */
                /* dkim@surecom.com */
                tio.c_cflag &= ~CSIZE;
                tio.c_cflag |= CS8;
                /* enable signals, canonical processing (erase, kill, etc),
                ** echo
                */
                tio.c_lflag |= ISIG|ICANON|ECHO|ECHOE|ECHOK;
#ifdef ECHOKE
                    tio.c_lflag |= ECHOKE|IEXTEN;
#endif
#ifdef ECHOCTL
                    tio.c_lflag |= ECHOCTL|IEXTEN;
#endif
                /* reset EOL to defalult value */
                tio.c_cc[VEOL] = CEOL;
                /* certain shells (ksh & csh) change EOF as well */
                tio.c_cc[VEOF] = CEOF;
#ifdef VLNEXT
                    tio.c_cc[VLNEXT] = CLNEXT;
#endif
#ifdef VWERASE
                    tio.c_cc[VWERASE] = CWERASE;
#endif
#ifdef VREPRINT
                    tio.c_cc[VREPRINT] = CRPRNT;
#endif
#ifdef VRPRNT
                    tio.c_cc[VRPRNT] = CRPRNT;
#endif
#ifdef VDISCARD
                    tio.c_cc[VDISCARD] = CFLUSH;
#endif
#ifdef VFLUSHO
                    tio.c_cc[VFLUSHO] = CFLUSH;
#endif
#ifdef VSTOP
                    tio.c_cc[VSTOP] = CSTOP;
#endif
#ifdef VSTART
                    tio.c_cc[VSTART] = CSTART;
#endif
#ifdef VSUSP
                    tio.c_cc[VSUSP] = CSUSP;
#endif
#ifdef VDSUSP
                    tio.c_cc[VDSUSP] = CDSUSP;
#endif
#define TMODE(ind,var) if (ttymodelist[ind].set) var = ttymodelist[ind].value;
                if (override_tty_modes) {
                  /* sysv-specific */
                  TMODE (XTTYMODE_intr, tio.c_cc[VINTR]);
                  TMODE (XTTYMODE_quit, tio.c_cc[VQUIT]);
                  TMODE (XTTYMODE_erase, tio.c_cc[VERASE]);
                  TMODE (XTTYMODE_kill, tio.c_cc[VKILL]);
                  TMODE (XTTYMODE_eof, tio.c_cc[VEOF]);
                  TMODE (XTTYMODE_eol, tio.c_cc[VEOL]);
#ifdef VSWTCH
                  TMODE (XTTYMODE_swtch, tio.c_cc[VSWTCH]);
#endif
#ifdef VSUSP
                        TMODE (XTTYMODE_susp, tio.c_cc[VSUSP]);
#endif
#ifdef VDSUSP
                        TMODE (XTTYMODE_dsusp, tio.c_cc[VDSUSP]);
#endif
#ifdef VREPRINT
                        TMODE (XTTYMODE_rprnt, tio.c_cc[VREPRINT]);
#endif
#ifdef VRPRNT
                        TMODE (XTTYMODE_rprnt, tio.c_cc[VRPRNT]);
#endif
#ifdef VDISCARD
                        TMODE (XTTYMODE_flush, tio.c_cc[VDISCARD]);
#endif
#ifdef VFLUSHO
                        TMODE (XTTYMODE_flush, tio.c_cc[VFLUSHO]);
#endif
#ifdef VWERASE
                        TMODE (XTTYMODE_weras, tio.c_cc[VWERASE]);
#endif
#ifdef VLNEXT
                        TMODE (XTTYMODE_lnext, tio.c_cc[VLNEXT]);
#endif
#ifdef VSTART
                        TMODE (XTTYMODE_start, tio.c_cc[VSTART]);
#endif
#ifdef VSTOP
                        TMODE (XTTYMODE_stop, tio.c_cc[VSTOP]);
#endif
#ifdef TIOCSLTC
                  /* both SYSV and BSD have ltchars */
                  TMODE (XTTYMODE_susp, ltc.t_suspc);
                  TMODE (XTTYMODE_dsusp, ltc.t_dsuspc);
                  TMODE (XTTYMODE_rprnt, ltc.t_rprntc);
                  TMODE (XTTYMODE_flush, ltc.t_flushc);
                  TMODE (XTTYMODE_weras, ltc.t_werasc);
                  TMODE (XTTYMODE_lnext, ltc.t_lnextc);
#endif
                }
#undef TMODE

#ifdef TIOCSLTC
                if (ioctl (tty, TIOCSLTC, &ltc) == -1)
                      HsSysError(cp_pipe[1], ERROR_TIOCSETC);
#endif      /* TIOCSLTC */
#ifdef TIOCLSET
                if (ioctl (tty, TIOCLSET, (char *)&lmode) == -1)
                      HsSysError(cp_pipe[1], ERROR_TIOCLSET);
#endif      /* TIOCLSET */
                if (ioctl (tty, TCSETA, &tio) == -1)
                      HsSysError(cp_pipe[1], ERROR_TIOCSETP);
#else /* USE_SYSV_TERMIO */
                sg.sg_flags &= ~(ALLDELAY | XTABS | CBREAK | RAW);
                sg.sg_flags |= ECHO | CRMOD;
                /* make sure speed is set on pty so that editors work right*/
                sg.sg_ispeed = B9600;
                sg.sg_ospeed = B9600;
                /* reset t_brkc to default value */
                tc.t_brkc = -1;
#ifdef LPASS8
                lmode |= LPASS8;
#endif
#ifdef sony
                jmode &= ~KM_KANJI;
#endif /* sony */

#define TMODE(ind,var) if (ttymodelist[ind].set) var = ttymodelist[ind].value;
                if (override_tty_modes) {
                  TMODE (XTTYMODE_intr, tc.t_intrc);
                  TMODE (XTTYMODE_quit, tc.t_quitc);
                  TMODE (XTTYMODE_erase, sg.sg_erase);
                  TMODE (XTTYMODE_kill, sg.sg_kill);
                  TMODE (XTTYMODE_eof, tc.t_eofc);
                  TMODE (XTTYMODE_start, tc.t_startc);
                  TMODE (XTTYMODE_stop, tc.t_stopc);
                  TMODE (XTTYMODE_brk, tc.t_brkc);
                  /* both SYSV and BSD have ltchars */
                  TMODE (XTTYMODE_susp, ltc.t_suspc);
                  TMODE (XTTYMODE_dsusp, ltc.t_dsuspc);
                  TMODE (XTTYMODE_rprnt, ltc.t_rprntc);
                  TMODE (XTTYMODE_flush, ltc.t_flushc);
                  TMODE (XTTYMODE_weras, ltc.t_werasc);
                  TMODE (XTTYMODE_lnext, ltc.t_lnextc);
                }
#undef TMODE

                if (ioctl (tty, TIOCSETP, (char *)&sg) == -1)
                      HsSysError (cp_pipe[1], ERROR_TIOCSETP);
                if (ioctl (tty, TIOCSETC, (char *)&tc) == -1)
                      HsSysError (cp_pipe[1], ERROR_TIOCSETC);
                if (ioctl (tty, TIOCSETD, (char *)&discipline) == -1)
                      HsSysError (cp_pipe[1], ERROR_TIOCSETD);
                if (ioctl (tty, TIOCSLTC, (char *)&ltc) == -1)
                      HsSysError (cp_pipe[1], ERROR_TIOCSLTC);
                if (ioctl (tty, TIOCLSET, (char *)&lmode) == -1)
                      HsSysError (cp_pipe[1], ERROR_TIOCLSET);
#ifdef sony
                if (ioctl (tty, TIOCKSET, (char *)&jmode) == -1)
                      HsSysError (cp_pipe[1], ERROR_TIOCKSET);
                if (ioctl (tty, TIOCKSETC, (char *)&jtc) == -1)
                      HsSysError (cp_pipe[1], ERROR_TIOCKSETC);
#endif /* sony */
#endif      /* !USE_SYSV_TERMIO */
#if defined(TIOCCONS) || defined(SRIOCSREDIR)
                if (Console) {
#ifdef TIOCCONS
                  int on = 1;
                  if (ioctl (tty, TIOCCONS, (char *)&on) == -1)
                      fprintf(stderr, "%s: cannot open console\n",
                            xterm_name);
#endif      /* TIOCCONS */
#if defined (SRIOCSREDIR)
                        int fd = open("/dev/console",O_RDWR);
                        if (fd == -1 || ioctl (fd, SRIOCSREDIR, tty) == -1)
                            fprintf(stderr, "%s: cannot open console\n",
                                    xterm_name);
                        close(fd);
#endif  /* SRIOCSREDIR */
                    }
#endif /* TIOCCONS || SRIOCSREDIR */
            }

            signal (SIGCHLD, SIG_DFL);
#ifdef USE_SYSV_SIGHUP
            /* watch out for extra shells (I don't understand either) */
            signal (SIGHUP, SIG_DFL);
#else
            signal (SIGHUP, SIG_IGN);
#endif
            /* restore various signals to their defaults */
            signal (SIGINT, SIG_DFL);
            signal (SIGQUIT, SIG_DFL);
            signal (SIGTERM, SIG_DFL);

            /* copy the environment before Setenving */
            for (i = 0 ; environ [i] != NULL ; i++)
                ;
            /* compute number of Setenv() calls below */
            envsize = 1;      /* (NULL terminating entry) */
            envsize += 3;     /* TERM, WINDOWID, DISPLAY */
#ifdef UTMP
            envsize += 1;   /* LOGNAME */
#endif /* UTMP */
#ifdef USE_SYSV_ENVVARS
/* dkim@surecom.com - no need.
#ifndef TIOCSWINSZ      */    /* window size not stored in driver? */
            envsize += 2;     /* COLUMNS, LINES */
/*
#endif *//* TIOCSWINSZ */
#ifdef UTMP
            envsize += 2;   /* HOME, SHELL */
#endif /* UTMP */
#else /* USE_SYSV_ENVVARS */
            envsize += 1;     /* TERMCAP */
#endif /* USE_SYSV_ENVVARS */
            envnew = (char **) calloc ((unsigned) i + envsize, sizeof(char *));
            /* no overlap - dkim@surecom.com */
            memcpy((char*)envnew, (char *)environ, i * sizeof(char *));
            environ = envnew;
            Setenv ("TERM=", TermName);

/* dkim@surecom.com */
#ifndef USE_TERMINFO
            if(!TermName)
                  *newtc = 0;
#endif

            sprintf (buf, "%lu",
                   ((unsigned long) XtWindow (XtParent(term))));
            Setenv ("WINDOWID=", buf);
            /* put the display into the environment of the shell*/
            Setenv ("DISPLAY=", XDisplayString (screen->display));

            signal(SIGTERM, SIG_DFL);

            /* this is the time to go and set up stdin, out, and err
             */
            {
#if defined(CRAY) && (OSMAJORVERSION >= 6)
                (void) close(tty);
                (void) close(0);

                if (open ("/dev/tty", O_RDWR)) {
                  fprintf(stderr, "cannot open /dev/tty\n");
                  exit(1);
                }
                (void) close(1);
                (void) close(2);
                dup(0);
                dup(0);
#else
                /* dup the tty */
                for (i = 0; i <= 2; i++)
                  if (i != tty) {
                      (void) close(i);
                      (void) dup(tty);
                  }

#ifndef ATT
                /* and close the tty */
                if (tty > 2)
                  (void) close(tty);
#endif
#endif /* CRAY */
            }

#ifndef     USE_SYSV_PGRP
#ifdef TIOCSCTTY
            setsid();
            ioctl(0, TIOCSCTTY, 0);
#endif
            ioctl(0, TIOCSPGRP, (char *)&pgrp);
            setpgrp(0,0);
            close(open(ttydev, O_WRONLY, 0));
            setpgrp (0, pgrp);
#endif /* !USE_SYSV_PGRP */

#ifdef UTMP
            pw = getpwuid(screen->uid);
            if (pw && pw->pw_name)
                Setenv ("LOGNAME=", pw->pw_name); /* for POSIX */
#ifdef USE_SYSV_UTMP
            /* Set up our utmp entry now.  We need to do it here
            ** for the following reasons:
            **   - It needs to have our correct process id (for
            **     login).
            **   - If our parent was to set it after the fork(),
            **     it might make it out before we need it.
            **   - We need to do it before we go and change our
            **     user and group id's.
            */
#ifdef CRAY
#define PTYCHARLEN 4
#else
#define PTYCHARLEN 2
#endif

            (void) setutent ();
            /* set up entry to search for */
            ptyname = ttydev;
            memset (&utmp, '\0', sizeof(utmp));
#ifndef sgi
            (void) strncpy(utmp.ut_id,ptyname + strlen(ptyname)-PTYCHARLEN,
                         sizeof (utmp.ut_id));
#else
            (void) strncpy(utmp.ut_id,ptyname + sizeof("/dev/tty")-1,
                        sizeof (utmp.ut_id));
#endif
            utmp.ut_type = DEAD_PROCESS;

            /* position to entry in utmp file */
            (void) getutid(&utmp);

            /* set up the new entry */
            utmp.ut_type = USER_PROCESS;
#ifndef linux
            utmp.ut_exit.e_exit = 2;
#endif
            (void) strncpy(utmp.ut_user,
                         (pw && pw->pw_name) ? pw->pw_name : "????",
                         sizeof(utmp.ut_user));
                
            (void)strncpy(utmp.ut_id, ptyname + strlen(ptyname)-PTYCHARLEN,
                  sizeof(utmp.ut_id));
            (void) strncpy (utmp.ut_line,
                  ptyname + strlen("/dev/"), sizeof (utmp.ut_line));

#ifdef HAS_UTMP_UT_HOST
            (void) strncpy(buf, DisplayString(screen->display),
                         sizeof(buf));
              {
                char *disfin = rindex(buf, ':');
                if (disfin)
                  *disfin = '\0';
            }
            (void) strncpy(utmp.ut_host, buf, sizeof(utmp.ut_host));
#endif
            (void) strncpy(utmp.ut_name, pw->pw_name, 
                         sizeof(utmp.ut_name));

            utmp.ut_pid = getpid();
#ifdef SVR4
                utmp.ut_session = getsid(0);
                utmp.ut_xtime = time ((Time_t *) 0);
                utmp.ut_tv.tv_usec = 0;
#else
            utmp.ut_time =  time (NULL);
#endif

            /* write out the entry */
            if (!resource.utmpInhibit)
                (void) pututline(&utmp);
#ifdef WTMP
#ifdef SVR4
                if (term->misc.login_shell)
                    updwtmpx(WTMPX_FILE, &utmp);
#else
            if ( term->misc.login_shell &&
                 (i = open(etc_wtmp, O_WRONLY|O_APPEND)) >= 0) {
                write(i, (char *)&utmp, sizeof(struct utmp));
                close(i);
            }
#endif
#endif
            /* close the file */
            (void) endutent();

#else /* USE_SYSV_UTMP */
            /* We can now get our ttyslot!  We can also set the initial
             * UTMP entry.
             */
            tslot = ttyslot();
            added_utmp_entry = False;
            {
                  if (pw && !resource.utmpInhibit &&
                      (i = open(etc_utmp, O_WRONLY)) >= 0) {
                        memset((char *)&utmp, '\0', sizeof(struct utmp));
                        (void) strncpy(utmp.ut_line,
                                     ttydev + strlen("/dev/"),
                                     sizeof(utmp.ut_line));
                        (void) strncpy(utmp.ut_name, pw->pw_name,
                                     sizeof(utmp.ut_name));
#ifdef HAS_UTMP_UT_HOST
                        (void) strncpy(utmp.ut_host, 
                                     XDisplayString (screen->display),
                                     sizeof(utmp.ut_host));
#endif
                        time(&utmp.ut_time);
                        lseek(i, (long)(tslot * sizeof(struct utmp)), 0);
                        write(i, (char *)&utmp, sizeof(struct utmp));
                        close(i);
                        added_utmp_entry = True;
#ifdef WTMP
                        if (term->misc.login_shell &&
                        (i = open(etc_wtmp, O_WRONLY|O_APPEND)) >= 0) {
                            int status;
                            status = write(i, (char *)&utmp,
                                       sizeof(struct utmp));
                            status = close(i);
                        }
#endif /* WTMP */
#ifdef LASTLOG
                        if (term->misc.login_shell &&
                        (i = open(etc_lastlog, O_WRONLY)) >= 0) {
                            memset((char *)&lastlog, '\0',
                              sizeof (struct lastlog));
                            (void) strncpy(lastlog.ll_line, ttydev +
                              sizeof("/dev"),
                              sizeof (lastlog.ll_line));
                            (void) strncpy(lastlog.ll_host, 
                                XDisplayString (screen->display),
                                sizeof (lastlog.ll_host));
                            time(&lastlog.ll_time);
                            lseek(i, (long)(screen->uid *
                              sizeof (struct lastlog)), 0);
                            write(i, (char *)&lastlog,
                              sizeof (struct lastlog));
                            close(i);
                        }
#endif /* LASTLOG */
                  } else
                        tslot = -tslot;
            }

            /* Let's pass our ttyslot to our parent so that it can
             * clean up after us.
             */
#ifdef USE_HANDSHAKE
            handshake.tty_slot = tslot;
#endif /* USE_HANDSHAKE */
#endif /* USE_SYSV_UTMP */

#ifdef USE_HANDSHAKE
            /* Let our parent know that we set up our utmp entry
             * so that it can clean up after us.
             */
            handshake.status = UTMP_ADDED;
            handshake.error = 0;
            strcpy(handshake.buffer, ttydev);
            (void)write(cp_pipe[1], (char *)&handshake, sizeof(handshake));
#endif /* USE_HANDSHAKE */
#endif/* UTMP */

            (void) setgid (screen->gid);
#ifdef HAS_BSD_GROUPS
            if (geteuid() == 0 && pw)
              initgroups (pw->pw_name, pw->pw_gid);
#endif
            (void) setuid (screen->uid);

#ifdef USE_HANDSHAKE
            /* mark the pipes as close on exec */
            fcntl(cp_pipe[1], F_SETFD, 1);
            fcntl(pc_pipe[0], F_SETFD, 1);

            /* We are at the point where we are going to
             * exec our shell (or whatever).  Let our parent
             * know we arrived safely.
             */
            handshake.status = PTY_GOOD;
            handshake.error = 0;
            (void)strcpy(handshake.buffer, ttydev);
            (void)write(cp_pipe[1], (char *)&handshake, sizeof(handshake));

            if (waiting_for_initial_map) {
                i = read (pc_pipe[0], (char *) &handshake,
                        sizeof(handshake));
                if (i != sizeof(handshake) ||
                  handshake.status != PTY_EXEC) {
                  /* some very bad problem occurred */
                  exit (ERROR_PTY_EXEC);
                }
                if(handshake.rows > 0 && handshake.cols > 0) {
                  screen->max_row = handshake.rows;
                  screen->max_col = handshake.cols;
#if defined(sun) && !defined(SVR4)
#ifdef TIOCSSIZE
                  ts.ts_lines = screen->max_row + 1;
                  ts.ts_cols = screen->max_col + 1;
#endif /* TIOCSSIZE */
#else /* !sun */
#ifdef TIOCSWINSZ
                  ws.ws_row = screen->max_row + 1;
                  ws.ws_col = screen->max_col + 1;
                  ws.ws_xpixel = FullWidth(screen);
                  ws.ws_ypixel = FullHeight(screen);
#endif /* TIOCSWINSZ */
#endif /* sun else !sun */
                }
            }
#endif /* USE_HANDSHAKE */

#ifdef USE_SYSV_ENVVARS
#ifndef TIOCSWINSZ            /* window size not stored in driver? */
            sprintf (numbuf, "%d", screen->max_col + 1);
            Setenv("COLUMNS=", numbuf);
            sprintf (numbuf, "%d", screen->max_row + 1);
            Setenv("LINES=", numbuf);
#endif /* TIOCSWINSZ */
#ifdef UTMP
            if (pw) {   /* SVR4 doesn't provide these */
                if (!getenv("HOME"))
                  Setenv("HOME=", pw->pw_dir);
                if (!getenv("SHELL"))
                  Setenv("SHELL=", pw->pw_shell);
            }
#endif /* UTMP */
#else /* USE_SYSV_ENVVAR */
/* dkim@surecom.com */
#ifndef USE_TERMINFO
            strcpy (termcap, newtc);
            resize (screen, TermName, termcap, newtc);
            if (term->misc.titeInhibit) {
                remove_termcap_entry (newtc, ":ti=");
                remove_termcap_entry (newtc, ":te=");
            }
            /*
             * work around broken termcap entries */
            if (resource.useInsertMode)   {
                remove_termcap_entry (newtc, ":ic=");
                /* don't get duplicates */
                remove_termcap_entry (newtc, ":im=");
                remove_termcap_entry (newtc, ":ei=");
                remove_termcap_entry (newtc, ":mi");
                strcat (newtc, ":im=\\E[4h:ei=\\E[4l:mi:");
            }
            Setenv ("TERMCAP=", newtc);
#endif
#endif /* USE_SYSV_ENVVAR */


            /* need to reset after all the ioctl bashing we did above */
#if defined(sun) && !defined(SVR4)
#ifdef TIOCSSIZE
            ioctl  (0, TIOCSSIZE, &ts);
#endif      /* TIOCSSIZE */
#else /* not sun */
#ifdef TIOCSWINSZ
            ioctl (0, TIOCSWINSZ, (char *)&ws);
#endif      /* TIOCSWINSZ */
#endif      /* sun */

            signal(SIGHUP, SIG_DFL);
            if (command_to_exec) {
                  execvp(*command_to_exec, command_to_exec);
                  /* print error message on screen */
                  fprintf(stderr, "%s: Can't execvp %s\n", xterm_name,
                   *command_to_exec);
            } 

#ifdef USE_SYSV_SIGHUP
            /* fix pts sh hanging around */
            signal (SIGHUP, SIG_DFL);
#endif

#ifdef UTMP
            if(((ptr = getenv("SHELL")) == NULL || *ptr == 0) &&
             ((pw == NULL && (pw = getpwuid(screen->uid)) == NULL) ||
             *(ptr = pw->pw_shell) == 0))
#else /* UTMP */
            if(((ptr = getenv("SHELL")) == NULL || *ptr == 0) &&
             ((pw = getpwuid(screen->uid)) == NULL ||
             *(ptr = pw->pw_shell) == 0))
#endif      /* UTMP */
                  ptr = "/bin/sh";
            if(shname = rindex(ptr, '/'))
                  shname++;
            else
                  shname = ptr;
            shname_minus = malloc(strlen(shname) + 2);
            (void) strcpy(shname_minus, "-");
            (void) strcat(shname_minus, shname);
#ifndef USE_SYSV_TERMIO
            ldisc = XStrCmp("csh", shname + strlen(shname) - 3) == 0 ?
             NTTYDISC : 0;
            ioctl(0, TIOCSETD, (char *)&ldisc);
#endif      /* !USE_SYSV_TERMIO */

#ifdef USE_LOGIN_DASH_P
            if (term->misc.login_shell && pw && added_utmp_entry)
              execl (bin_login, "login", "-p", "-f", pw->pw_name, 0);
#endif
            execlp (ptr, (term->misc.login_shell ? shname_minus : shname),
                  0);

            /* Exec failed. */
            fprintf (stderr, "%s: Could not exec %s!\n", xterm_name, ptr);
            (void) sleep(5);
            exit(ERROR_EXEC);
          }                   /* end if in child after fork */

#ifdef USE_HANDSHAKE
          /* Parent process.  Let's handle handshaked requests to our
           * child process.
           */

          /* close childs's sides of the pipes */
          close (cp_pipe[1]);
          close (pc_pipe[0]);

          for (done = 0; !done; ) {
            if (read(cp_pipe[0], (char *) &handshake, sizeof(handshake)) <= 0) {
                  /* Our child is done talking to us.  If it terminated
                   * due to an error, we will catch the death of child
                   * and clean up.
                   */
                  break;
            }

            switch(handshake.status) {
            case PTY_GOOD:
                  /* Success!  Let's free up resources and
                   * continue.
                   */
                  done = 1;
                  break;

            case PTY_BAD:
                  /* The open of the pty failed!  Let's get
                   * another one.
                   */
                  (void) close(screen->respond);
                  if (get_pty(&screen->respond)) {
                      /* no more ptys! */
                      (void) fprintf(stderr,
                        "%s: child process can find no available ptys\n",
                        xterm_name);
                      handshake.status = PTY_NOMORE;
                      write(pc_pipe[1], (char *) &handshake, sizeof(handshake));
                      exit (ERROR_PTYS);
                  }
                  handshake.status = PTY_NEW;
                  (void) strcpy(handshake.buffer, ttydev);
                  write(pc_pipe[1], (char *) &handshake, sizeof(handshake));
                  break;

            case PTY_FATALERROR:
                  errno = handshake.error;
                  close(cp_pipe[0]);
                  close(pc_pipe[1]);
                  SysError(handshake.fatal_error);

            case UTMP_ADDED:
                  /* The utmp entry was set by our slave.  Remember
                   * this so that we can reset it later.
                   */
                  added_utmp_entry = True;
#ifndef     USE_SYSV_UTMP
                  tslot = handshake.tty_slot;
#endif      /* USE_SYSV_UTMP */
                  free(ttydev);
                  ttydev = malloc((unsigned) strlen(handshake.buffer) + 1);
                  strcpy(ttydev, handshake.buffer);
                  break;
            default:
                  fprintf(stderr, "%s: unexpected handshake status %d\n",
                          xterm_name, handshake.status);
            }
          }
          /* close our sides of the pipes */
          if (!waiting_for_initial_map) {
            close (cp_pipe[0]);
            close (pc_pipe[1]);
          }
#endif /* USE_HANDSHAKE */
      }                       /* end if no slave */

      /*
       * still in parent (xterm process)
       */

#ifdef USE_SYSV_SIGHUP
      /* hung sh problem? */
      signal (SIGHUP, SIG_DFL);
#else
      signal (SIGHUP,SIG_IGN);
#endif

/*
 * Unfortunately, System V seems to have trouble divorcing the child process
 * from the process group of xterm.  This is a problem because hitting the 
 * INTR or QUIT characters on the keyboard will cause xterm to go away if we
 * don't ignore the signals.  This is annoying.
 */

#if defined(USE_SYSV_SIGNALS) && !defined(SIGTSTP)
      signal (SIGINT, SIG_IGN);

#ifndef SYSV
      /* hung shell problem */
      signal (SIGQUIT, SIG_IGN);
#endif
      signal (SIGTERM, SIG_IGN);
#else /* else is bsd or has job control */
#ifdef SYSV
      /* if we were spawned by a jobcontrol smart shell (like ksh or csh),
       * then our pgrp and pid will be the same.  If we were spawned by
       * a jobcontrol dump shell (like /bin/sh), then we will be in out
       * parents pgrp, and we must ignore keyboard signals, or will will
       * tank on everything.
       */
      if (getpid() == getpgrp()) {
          (void) signal(SIGINT, Exit);
          (void) signal(SIGQUIT, Exit);
          (void) signal(SIGTERM, Exit);
      } else {
          (void) signal(SIGINT, SIG_IGN);
          (void) signal(SIGQUIT, SIG_IGN);
          (void) signal(SIGTERM, SIG_IGN);
      }
      (void) signal(SIGPIPE, Exit);
#else /* SYSV */
      signal (SIGINT, Exit);
      signal (SIGQUIT, Exit);
      signal (SIGTERM, Exit);
        signal (SIGPIPE, Exit);
#endif      /* SYSV */
#endif /* USE_SYSV_SIGNALS and not SIGTSTP */

      return;
}                                         /* end spawn */

SIGNAL_T
Exit(n)
      int n;
{
      register TScreen *screen = &term->screen;
        int pty = term->screen.respond;  /* file descriptor of pty */
#ifdef UTMP
#ifdef USE_SYSV_UTMP
#ifdef SVR4
        struct utmpx utmp;
        struct utmpx *utptr;
#else
      struct utmp *utptr;
        struct utmp utmp;
#endif
      char *ptyname;
#if defined(WTMP) && !defined(SVR4)
      int fd;                 /* for /etc/wtmp */
      int i;
#endif
#ifdef PUCC_PTYD
        closepty(ttydev, ptydev, (resource.utmpInhibit ?  OPTY_NOP : OPTY_LOGIN)
#endif /* PUCC_PTYD */

      /* cleanup the utmp entry we forged earlier */
      if (!resource.utmpInhibit
#ifdef USE_HANDSHAKE          /* without handshake, no way to know */
          && added_utmp_entry
#endif /* USE_HANDSHAKE */
          ) {
          ptyname = ttydev;
          utmp.ut_type = USER_PROCESS;
          (void) strncpy(utmp.ut_id, ptyname + strlen(ptyname) - PTYCHARLEN,
                     sizeof(utmp.ut_id));
          (void) setutent();
          utptr = getutid(&utmp);
          /* write it out only if it exists, and the pid's match */
          if (utptr && (utptr->ut_pid == screen->pid)) {
                utptr->ut_type = DEAD_PROCESS;
#ifdef SVR4
                    utmp.ut_session = getsid(0);
                    utmp.ut_xtime = time ((Time_t *) 0);
                    utmp.ut_tv.tv_usec = 0;
#else
                utptr->ut_time = time(NULL);
#endif
                (void) pututline(utptr);
#ifdef WTMP
#ifdef SVR4
                    updwtmpx(WTMPX_FILE, &utmp);
#else
                /* set wtmp entry if wtmp file exists */
                if ((fd = open(etc_wtmp, O_WRONLY | O_APPEND)) >= 0) {
                  i = write(fd, utptr, sizeof(utmp));
                  i = close(fd);
                }
#endif
#endif

          }
          (void) endutent();
      }
#else /* not USE_SYSV_UTMP */
      register int wfd;
      register int i;
      struct utmp utmp;

      if (!resource.utmpInhibit && added_utmp_entry &&
          (!am_slave && tslot > 0 && (wfd = open(etc_utmp, O_WRONLY)) >= 0)){
            memset((char *)&utmp, '\0', sizeof(struct utmp));
            lseek(wfd, (long)(tslot * sizeof(struct utmp)), 0);
            write(wfd, (char *)&utmp, sizeof(struct utmp));
            close(wfd);
#ifdef WTMP
            if (term->misc.login_shell &&
                (wfd = open(etc_wtmp, O_WRONLY | O_APPEND)) >= 0) {
                  (void) strncpy(utmp.ut_line, ttydev +
                      sizeof("/dev"), sizeof (utmp.ut_line));
                  time(&utmp.ut_time);
                  i = write(wfd, (char *)&utmp, sizeof(struct utmp));
                  i = close(wfd);
            }
#endif /* WTMP */
      }
#endif      /* USE_SYSV_UTMP */
#endif      /* UTMP */
        close(pty); /* close explicitly to avoid race with slave side */
#ifdef ALLOWLOGFILEONOFF
      if(screen->logging)
            CloseLog(screen);
#endif

      if (!am_slave) {
            /* restore ownership of tty and pty */
            chown (ttydev, 0, 0);
#ifndef sgi
            chown (ptydev, 0, 0);
#endif /* !sgi */

            /* restore modes of tty and pty */
            chmod (ttydev, 0666);
#ifndef sgi
            chmod (ptydev, 0666);
#endif /* !sgi */
      }
      exit(n);
      SIGNAL_RETURN;
}

/* ARGSUSED */
resize(screen, TermName, oldtc, newtc)
TScreen *screen;
char *TermName;
register char *oldtc, *newtc;
{
#ifndef USE_SYSV_ENVVARS
      register char *ptr1, *ptr2;
      register int i;
      register int li_first = 0;
      register char *temp;

      if ((ptr1 = strindex (oldtc, "co#")) == NULL){
            strcat (oldtc, "co#80:");
            ptr1 = strindex (oldtc, "co#");
      }
      if ((ptr2 = strindex (oldtc, "li#")) == NULL){
            strcat (oldtc, "li#24:");
            ptr2 = strindex (oldtc, "li#");
      }
      if(ptr1 > ptr2) {
            li_first++;
            temp = ptr1;
            ptr1 = ptr2;
            ptr2 = temp;
      }
      ptr1 += 3;
      ptr2 += 3;
      strncpy (newtc, oldtc, i = ptr1 - oldtc);
      newtc += i;
      sprintf (newtc, "%d", li_first ? screen->max_row + 1 :
       screen->max_col + 1);
      newtc += strlen(newtc);
      ptr1 = index (ptr1, ':');
      strncpy (newtc, ptr1, i = ptr2 - ptr1);
      newtc += i;
      sprintf (newtc, "%d", li_first ? screen->max_col + 1 :
       screen->max_row + 1);
      ptr2 = index (ptr2, ':');
      strcat (newtc, ptr2);
#endif /* USE_SYSV_ENVVARS */
}

/*
 * Does a non-blocking wait for a child process.  If the system
 * doesn't support non-blocking wait, do nothing.
 * Returns the pid of the child, or 0 or -1 if none or error.
 */
int
nonblocking_wait()
{
#ifdef USE_POSIX_WAIT
        pid_t pid;
 
        pid = waitpid(-1, NULL, WNOHANG);
#else /* USE_POSIX_WAIT */
#if defined(USE_SYSV_SIGNALS) && (defined(CRAY) || !defined(SIGTSTP))
        /* cannot do non-blocking wait */
        int pid = 0;
#else   /* defined(USE_SYSV_SIGNALS) && (defined(CRAY) || !defined(SIGTSTP)) */
        union wait status;
        register int pid;
 
        pid = wait3 (&status, WNOHANG, (struct rusage *)NULL);
#endif /* defined(USE_SYSV_SIGNALS) && !defined(SIGTSTP) */
#endif /* USE_POSIX_WAIT else */
 
        return pid;
}

/* ARGSUSED */
static SIGNAL_T reapchild (n)
    int n;
{
        pid_t pid;

      pid = waitpid(-1, NULL, WNOHANG);
#ifdef USE_SYSV_SIGNALS
    /* cannot re-enable signal before waiting for child
       because then SVR4 loops.  Sigh.  HP-UX 9.01 too. */
    (void) signal(SIGCHLD, reapchild);
#endif
    do {
        if (pid == term->screen.pid) {
#ifdef DEBUG
            if (debug) fputs ("Exiting\n", stderr);
#endif
            Cleanup (0);
        }
    } while ( (pid=nonblocking_wait()) > 0);
 
    SIGNAL_RETURN;
}

/* VARARGS1 */
consolepr(fmt,x0,x1,x2,x3,x4,x5,x6,x7,x8,x9)
char *fmt;
{
      extern int errno;
      extern char *SysErrorMsg();
      int oerrno;
      int f;
      char buf[ BUFSIZ ];

      oerrno = errno;
      strcpy(buf, "hanterm: ");
      sprintf(buf+strlen(buf), fmt, x0,x1,x2,x3,x4,x5,x6,x7,x8,x9);
      strcat(buf, ": ");
      strcat(buf, SysErrorMsg (oerrno));
      strcat(buf, "\n");      
      f = open("/dev/console",O_WRONLY);
      write(f, buf, strlen(buf));
      close(f);
#ifdef TIOCNOTTY
      if ((f = open("/dev/tty", 2)) >= 0) {
            ioctl(f, TIOCNOTTY, (char *)NULL);
            close(f);
      }
#endif      /* TIOCNOTTY */
}


#ifndef USE_TERMIOS
static remove_termcap_entry (buf, str)
    char *buf;
    char *str;
{
    register char *strinbuf;

    strinbuf = strindex (buf, str);
    if (strinbuf) {
        register char *colonPtr = index (strinbuf+1, ':');
        if (colonPtr) {
            while (*colonPtr) {
                *strinbuf++ = *colonPtr++;      /* copy down */
            }
            *strinbuf = '\0';
        } else {
            strinbuf[1] = '\0';
        }
    }
    return;
}
#endif

/*
 * parse_tty_modes accepts lines of the following form:
 *
 *         [SETTING] ...
 *
 * where setting consists of the words in the modelist followed by a character
 * or ^char.
 */
static int parse_tty_modes (s, modelist)
    char *s;
    struct _xttymodes *modelist;
{
    struct _xttymodes *mp;
    int c;
    int count = 0;

    while (1) {
      while (*s && isascii(*s) && isspace(*s)) s++;
      if (!*s) return count;

      for (mp = modelist; mp->name; mp++) {
          if (strncmp (s, mp->name, mp->len) == 0) break;
      }
      if (!mp->name) return -1;

      s += mp->len;
      while (*s && isascii(*s) && isspace(*s)) s++;
      if (!*s) return -1;

      if (*s == '^') {
          s++;
          c = ((*s == '?') ? 0177 : *s & 31);    /* keep control bits */
      } else {
          c = *s;
      }
      mp->value = c;
      mp->set = 1;
      count++;
      s++;
    }
}


int GetBytesAvailable (fd)
    int fd;
{
#ifdef FIONREAD
    static long arg;
    ioctl (fd, FIONREAD, (char *) &arg);
    return (int) arg;
#else
    struct pollfd pollfds[1];

    pollfds[0].fd = fd;
    pollfds[0].events = POLLIN;
    return poll (pollfds, 1, 0);
#endif
}

/* Utility function to try to hide system differences from
   everybody who used to call killpg() */

int
kill_process_group(pid, sig)
    int pid;
    int sig;
{
#ifndef X_NOT_POSIX
    return kill (-pid, sig);
#else
#if defined(SVR4) || defined(SYSV)
    return kill (-pid, sig);
#else
    return killpg (pid, sig);
#endif
#endif
}

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