/*  C K U U S X --  "User Interface" common functions. */

/*
  Author: Frank da Cruz (fdc@columbia.edu, FDCCU@CUVMA.BITNET),
  Columbia University Center for Computing Activities.
  First released January 1985.
  Copyright (C) 1985, 1992, Trustees of Columbia University in the City of New
  York.  Permission is granted to any individual or institution to use this
  software as long as it is not sold for profit.  This copyright notice must be
  retained.  This software may not be included in commercial products without
  written permission of Columbia University.
*/

/*
  This module contains user interface functions needed by both the interactive
  user interface and the command-line-only user interface.
*/

/* Includes */

#include "ckcdeb.h"
#include "ckcasc.h"
#include "ckcker.h"
#include "ckuusr.h"
#ifndef WINTCP
#include <signal.h>
#endif /* WINTCP */

#ifdef VMS
#ifdef WINTCP
#include <descrip.h>
#include <ssdef.h>
#include <stsdef.h>
#include <signal.h>
#else
#include <descrip.h>
#include <ssdef.h>
#include <stsdef.h>
#endif /* WINTCP */
#endif /* VMS */

/* Used internally */
_PROTOTYP( VOID screenc, (int, char, long, char *) );
static int ft_win = 0;  /* Fullscreen file transfer display window is active */

/* Variables declared here */

int fdispla = XYFD_R;			/* File transfer display type */
int tt_crd = 0;				/* Carriage return display */

#ifdef DEBUG
char debfil[50];			/* Debugging log file name */
#endif /* DEBUG */

#ifdef TLOG
char trafil[50];			/* Transaction log file name */
#endif /* TLOG */

char pktfil[50];			/* Packet log file name */
char sesfil[50];			/* Session log file name */

#ifndef NOFRILLS
char optbuf[100];			/* Options for MAIL or REMOTE PRINT */
#endif /* NOFRILLS */
char cmdstr[256];			/* Place to build generic command */

char fspec[FSPECL];			/* Filename string for \v(filespec) */

/*  C C N T A B  --  Names of ASCII control characters 0-31 */

char *ccntab[] = { "NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "BEL",
 "BS", "HT", "LF", "VT", "FF", "CR", "SO", "SI",
 "DLE", "DC1/XON", "DC2", "DC3/XOFF", "DC4", "NAK", "SYN", "ETB", "CAN",
 "EM", "SUB", "ESC", "FS", "GS", "RS", "US"
};

int success = 1,			/* Command success/failure flag */

#ifndef NOSPL
    cmdlvl = 0,				/* Command level */
#endif /* NOSPL */
    action,				/* Action selected on command line*/
    sessft = 0,				/* Session log file type, 0 = text */
    pflag = 1,				/* Print prompt */
    msgflg = 1;				/* Print informational messages */

#ifndef NOMSEND				/* Multiple SEND */
char *msfiles[MSENDMAX];
#endif /* NOMSEND */

/* External variables */

#ifndef NODIAL
extern FILE * dialfd;			/* Dialing directory */
#endif /* NODIAL */

extern int local, quiet, binary, bctu, rptflg, ebqflg, network, server,
  what, spsiz, urpsiz, wmax, czseen, cxseen, winlo, displa, timint, parity,
  npad, ebq, ebqflg, bctr, rptq, atcapu, lpcapu, swcapu, wslotn, wslotr, rtimo,
  mypadn, sq, capas, rpsiz, tsecs, dfloc, tralog, pktlog, seslog, lscapu,
  xitsta, escape, tlevel, bgset, backgrd, wslots, suspend, srvdis,
  spackets, spktl, rpktl, retrans, wcur, numerrs, fsecs;

#ifdef datageneral			/* 2/12/92 ENH */
#include <sysid.h>
extern int con_reads_mt, conint_ch, conint_avl;
#endif /* datageneral */

extern long speed, filcnt, ffc, tfc, rptn, fsize;

extern CHAR *rdatap, padch, seol, ctlq, mypadc, eol;

extern char ttname[], *dftty, *cmarg, **cmlist, *versio, myhost[];
#ifndef NOICP
#ifdef DCMDBUF
extern char *cmdbuf;			/* Command buffer */
#else
extern char cmdbuf[];			/* Command buffer */
#endif /* DCMDBUF */
#endif /* NOICP */

#ifndef NOCCTRAP
#include <setjmp.h>			/* Control-C trap */
jmp_buf cmjbuf;
#endif /* NOCCTRAP */


/*  P A R N A M  --  Return parity name */

char *
#ifdef CK_ANSIC
parnam(char c)
#else
parnam(c) char c;
#endif /* CK_ANSIC */
/* parnam */ {
    switch (c) {
	case 'e': return("even");
	case 'o': return("odd");
	case 'm': return("mark");
	case 's': return("space");
	case 0:   return("none");
	default:  return("invalid");
    }
}

/*  S H O M D M  --  Show modem signals  */

VOID
shomdm() {
/*
  Note use of "\r\n" to make sure this report prints right, even when
  called during CONNECT mode.
*/
    int y;
    y = ttgmdm();
    switch (y) {
      case -3: printf(
	         "Modem signals unavailable in this version of Kermit\r\n");
	       break;
      case -2: printf("No modem control for this device\r\n"); break;
      case -1: printf("Modem signals unavailable\r\n"); break;
      default:
#ifndef MAC
        printf(
	  " Carrier Detect      (CD):  %s\r\n",(y & BM_DCD) ? "On": "Off");
	printf(
          " Dataset Ready       (DSR): %s\r\n",(y & BM_DSR) ? "On": "Off");
#endif /* MAC */
	printf(
          " Clear To Send       (CTS): %s\r\n",(y & BM_CTS) ? "On": "Off");
#ifndef MAC
        printf(
          " Ring Indicator      (RI):  %s\r\n",(y & BM_RNG) ? "On": "Off");
#endif /* MAC */
        printf(
          " Data Terminal Ready (DTR): %s\r\n",(y & BM_DTR) ? "On": "Off");
#ifndef MAC
        printf(
          " Request to Send     (RTS): %s\r\n",(y & BM_RTS) ? "On": "Off");
#endif /* MAC */
    }
}

/*  S D E B U  -- Record spar results in debugging log  */

VOID
sdebu(len) int len; {
    debug(F111,"spar: data",(char *) rdatap,len);
    debug(F101," spsiz ","", spsiz);
    debug(F101," timint","",timint);
    debug(F101," npad  ","",  npad);
    debug(F101," padch ","", padch);
    debug(F101," seol  ","",  seol);
    debug(F101," ctlq  ","",  ctlq);
    debug(F101," ebq   ","",   ebq);
    debug(F101," ebqflg","",ebqflg);
    debug(F101," bctr  ","",  bctr);
    debug(F101," rptq  ","",  rptq);
    debug(F101," rptflg","",rptflg);
    debug(F101," lscapu","",lscapu);
    debug(F101," atcapu","",atcapu);
    debug(F101," lpcapu","",lpcapu);
    debug(F101," swcapu","",swcapu);
    debug(F101," wslotn","", wslotn);
}
/*  R D E B U -- Debugging display of rpar() values  */

VOID
rdebu(d,len) CHAR *d; int len; {
    debug(F111,"rpar: data",d,len);
    debug(F101," rpsiz ","", xunchar(d[0]));
    debug(F101," rtimo ","", rtimo);
    debug(F101," mypadn","",mypadn);
    debug(F101," mypadc","",mypadc);
    debug(F101," eol   ","",   eol);
    debug(F101," ctlq  ","",  ctlq);
    debug(F101," sq    ","",    sq);
    debug(F101," ebq   ","",   ebq);
    debug(F101," ebqflg","",ebqflg);
    debug(F101," bctr  ","",  bctr);
    debug(F101," rptq  ","",  d[8]);
    debug(F101," rptflg","",rptflg);
    debug(F101," capas ","", capas);
    debug(F101," bits  ","",d[capas]);
    debug(F101," lscapu","",lscapu);
    debug(F101," atcapu","",atcapu);
    debug(F101," lpcapu","",lpcapu);
    debug(F101," swcapu","",swcapu);
    debug(F101," wslotr","", wslotr);
    debug(F101," rpsiz(extended)","",rpsiz);
}

#ifdef COMMENT
/*  C H K E R R  --  Decide whether to exit upon a protocol error  */

VOID
chkerr() {
    if (backgrd && !server) fatal("Protocol error");
}
#endif /* COMMENT */

/*  F A T A L  --  Fatal error message */

VOID
fatal(msg) char *msg; {
#ifdef VMS
#ifndef NOICP
    if (strncmp(msg,"%CKERMIT",8)) {
	sprintf(cmdbuf,"%%CKERMIT-E-FATAL, %s",msg);
	msg = cmdbuf;
    }
#endif /* NOICP */
    conoll(msg);
#else
    screen(SCR_EM,0,0L,msg);
#endif /* VMS */
    debug(F110,"fatal",msg,0);
    tlog(F110,"Fatal:",msg,0L);
    doexit(BAD_EXIT,xitsta | 1);	/* Exit indicating failure */
}

/*  B L D L E N  --  Make length-encoded copy of string  */

char *
bldlen(str,dest) char *str, *dest; {
    int len;
    len = (int)strlen(str);
    *dest = tochar(len);
    strcpy(dest+1,str);
    return(dest+len+1);
}


/*  S E T G E N  --  Construct a generic command  */

CHAR
#ifdef CK_ANSIC
setgen(char type,char * arg1, char * arg2, char * arg3)
#else
setgen(type,arg1,arg2,arg3) char type, *arg1, *arg2, *arg3;
#endif /* CK_ANSIC */
/* setgen */ {
    char *upstr, *cp;

    cp = cmdstr;
    *cp++ = type;
    *cp = NUL;
    if (*arg1 != NUL) {
	upstr = bldlen(arg1,cp);
	if (*arg2 != NUL) {
	    upstr = bldlen(arg2,upstr);
	    if (*arg3 != NUL) bldlen(arg3,upstr);
	}
    }
    cmarg = cmdstr;
    debug(F110,"setgen",cmarg,0);

    return('g');
}

#ifndef NOMSEND
static char *mgbufp = NULL;

/*  F N P A R S E  --  */

/*
  Argument is a character string containing one or more filespecs.
  This function breaks the string apart into an array of pointers, one
  to each filespec, and returns the number of filespecs.  Used by server
  when it receives a GET command to allow it to process multiple file
  specifications in one transaction.  Sets cmlist to point to a list of
  file pointers, exactly as if they were command line arguments.

  This version of fnparse treats spaces as filename separators.  If your
  operating system allows spaces in filenames, you'll need a different
  separator.

  This version of fnparse mallocs a string buffer to contain the names.  It
  cannot assume that the string that is pointed to by the argument is safe.
*/
int
fnparse(string) char *string; {
    char *p, *s, *q;
    int r = 0, x;			/* Return code */

    if (mgbufp) free(mgbufp);		/* Free this from last time. */
    mgbufp = malloc((int)strlen(string)+2);
    if (!mgbufp) {
	debug(F100,"fnparse malloc error","",0);
	return(0);
    }	
#ifndef NOICP
#ifndef NOSPL
    strncpy(fspec,string,FSPECL);	/* Make copy for \v(filespec) */
#endif /* NOSPL */
#endif /* NOICP */
    s = string;				/* Input string */
    p = q = mgbufp;			/* Point to the copy */
    r = 0;				/* Initialize our return code */
    while (*s == SP || *s == HT)	/* Skip leading spaces and tabs */
      s++;
    for (x = strlen(s);			/* Strip trailing spaces */
	 (x > 1) && (s[x-1] == SP || s[x-1] == HT);
	 x--)
      s[x-1] = NUL;
    while (1) {				/* Loop through rest of string */
	if (*s == CMDQ) {		/* Backslash (quote character)? */
	    if ((x = xxesc(&s)) > -1) {	/* Go interpret it. */
		*q++ = (char) x;	/* Numeric backslash code, ok */
	    } else {			/* Just let it quote next char */
		s++;			/* get past the backslash */
		*q++ = *s++;		/* deposit next char */
	    }
	    continue;
	} else if (*s == SP || *s == NUL) { /* Unquoted space or NUL? */
	    *q++ = NUL;			/* End of output filename. */
	    msfiles[r] = p;		/* Add this filename to the list */
	    debug(F111,"fnparse",msfiles[r],r);
	    r++;			/* Count it */
	    if (*s == NUL) break;	/* End of string? */
	    while (*s == SP) s++;	/* Skip repeated spaces */
	    p = q;			/* Start of next name */
	    continue;
	} else *q++ = *s;		/* Otherwise copy the character */
	s++;				/* Next input character */
    }
    debug(F101,"fnparse r","",r);
    msfiles[r] = "";			/* Put empty string at end of list */
    cmlist = msfiles;
    return(r);
}
#endif /* NOMSEND */

char *					/* dbchr() for DEBUG SESSION */
dbchr(c) int c; {
    static char s[8];
    char *cp = s;

    c &= 0xff;
    if (c & 0x80) {			/* 8th bit on */
	*cp++ = '~';
	c &= 0x7f;
    }
    if (c < SP) {			/* Control character */
	*cp++ = '^';
	*cp++ = ctl(c);
    } else if (c == DEL) {
	*cp++ = '^';
	*cp++ = '?';
    } else {				/* Printing character */
	*cp++ = c;
    }
    *cp = '\0';				/* Terminate string */
    cp = s;				/* Return pointer to it */
    return(cp);
}

/*  C K H O S T  --  Get name of local host (where C-Kermit is running)  */

/*
  Call with pointer to buffer to put hostname in, and length of buffer.
  Copies hostname into buffer on success, puts null string in buffer on
  failure.
*/
#ifdef BSD44
#define BSD4
#undef ATTSV
#endif /* BSD44 */

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

VOID
ckhost(vvbuf,vvlen) char * vvbuf; int vvlen; {
    char *g;
#ifdef VMS
    int x;
#endif /* VMS */
#ifdef ATTSV
    struct utsname hname;
#endif /* ATTSV */
#ifdef datageneral
    int ac0 = (char *) vvbuf, ac1 = -1, ac2 = 0;
#endif /* datageneral */

    *vvbuf = NUL;
#ifdef ATTSV
    if (uname(&hname) > -1) strncpy(vvbuf,hname.nodename,vvlen);
#else
#ifdef BSD4
    if (gethostname(vvbuf,vvlen) < 0) *vvbuf = NUL;
#else
#ifdef VMS
    g = getenv("SYS$NODE");
    if (g) strncpy(vvbuf,g,vvlen);
    x = (int)strlen(vvbuf);
    if (x > 1 && vvbuf[x-1] == ':' && vvbuf[x-2] == ':') vvbuf[x-2] = NUL;
#else
#ifdef datageneral
    if (sys($HNAME,&ac0,&ac1,&ac2) == 0) /* successful */
        vvlen = ac2 + 1;		/* enh - have to add one */
#else
#ifdef OS2				/* OS/2 */
    g = getenv("SYSTEMNAME");
    if (!g) g = getenv("HOSTNAME");
    if (g) strncpy(vvbuf,g,vvlen);
#endif /* OS2 */
#endif /* datageneral */
#endif /* VMS */
#endif /* BSD4 */
#endif /* ATTSV */
    if (*vvbuf == NUL) {		/* If it's still empty */
        g = getenv("HOST");		/* try this */
        if (g) strncpy(vvbuf,g,vvlen);
    }
    vvbuf[vvlen-1] = NUL;		/* Make sure result is terminated. */
}
#ifdef BSD44
#undef BSD4
#define ATTSV
#endif /* BSD44 */


#ifndef NOSPL
#define ASKMORE
#endif /* NOSPL */
#ifndef NOHELP
#ifndef ASKMORE
#define ASKMORE
#endif /* ASKMORE */
#endif /* NOHELP */

#ifdef ASKMORE
/*
  A S K M O R E  --  Poor person's "more".
  Returns 0 if no more, 1 if more wanted.
  Presently used by SHO MAC, SHO GLOB, SHO VAR, and HELP, so compiled out if
  those options are also compiled out.
*/
int
askmore() {
    char c; int rv;

    rv = -1;
    while (rv < 0) {
#ifndef OS2
	printf("more? ");
#ifdef UNIX
#ifdef NOSETBUF
	fflush(stdout);
#endif /* NOSETBUF */
#endif /* UNIX */
#else
	printf("more? (Y or space-bar for yes, N for no) ");
	fflush(stdout);
#endif /* OS2 */
	c = coninc(0);
	switch (c) {
	  /* Yes */
	  case SP: case 'y': case 'Y': case 012:  case 015:
	    printf("\015      \015");
	    rv = 1;
	    break;
          /* No */
	  case 'n': case 'N': case 'q': case 'Q':
	    printf("\015\012");
	    rv = 0;
	    break;
	  /* Invalid answer */
	  default:
	    printf("Y or space-bar for yes, N for no\n");
	    continue;
	}
#ifdef OS2
	printf("\r                                         \r");
	fflush(stdout);
#endif /* OS2 */
    }
    return(rv);
}
#endif /* ASKMORE */

/*  T R A P  --  Terminal interrupt handler */

SIGTYP
trap(sig) int sig; {
#ifdef VMS
    int i; FILE *f;
#endif /* VMS */
#ifdef __EMX__
  signal(SIGINT, SIG_ACK);
#endif
#ifdef GEMDOS
/* GEM is not reentrant, no i/o from interrupt level */
    longjmp(cmjbuf,1);			/* Jump back to parser now! */
#endif /* GEMDOS */
    debug(F101,"^C trap() caught signal","",sig);
    zclose(ZIFILE);			/* If we were transferring a file, */
    zclose(ZOFILE);			/* close it. */
#ifdef VMS
/*
  Fix terminal.
*/
    if (ft_win) {			/* If curses window open */
	screen(SCR_CW,0,0L,"");		/* Close it */
	conres();			/* Restore terminal */
	i = printf("^C...");		/* Echo ^C to standard output */
    } else {
	conres();
	i = printf("^C...\n");		/* Echo ^C to standard output */
    }
    if (i < 1 && ferror(stdout)) {	/* If there was an error */
	fclose(stdout);			/* close standard output */
	f = fopen(dftty, "w");		/* open the controlling terminal */
	if (f) stdout = f;		/* and make it standard output */
	printf("^C...\n");		/* and echo the ^C again. */
    }
#else					/* Not VMS */
    if (ft_win) {			/* If curses window open, */
	screen(SCR_CW,0,0L,"");		/* close it. */
	printf("^C...");		/* Echo ^C to standard output */
    } else {
	printf("^C...\n");
    }
#endif /* VMS */
#ifdef datageneral
    connoi_mt(); 			/* Kill asynch task that listens to */
    ttimoff();				/* the keyboard */
    conres();
#endif /* datageneral */

#ifndef NOCCTRAP
#ifdef UNIX
    ttimoff();				/* Turn off any timer interrupts */
#endif /* UNIX */
#ifdef OSK
    ttimoff();				/* Turn off any timer interrupts */
    sigmask(-1);
/*
  We are in an intercept routine but do not perform a F$RTE (done implicitly
  but rts).  We have to decrement the sigmask as F$RTE does.  Warning:
  longjump only restores the cpu registers, NOT the fpu registers.  So don't
  use fpu at all or at least don't use common fpu (double or float) register
  variables.
*/
#endif /* OSK */
    longjmp(cmjbuf,1);			/* Jump back to parser */
#else
/* No Ctrl-C trap, just exit. */
#ifdef CK_CURSES			/* Curses support? */
    screen(SCR_CW,0,0L,"");		/* Close curses window */
#endif /* CK_CURSES */
    doexit(BAD_EXIT,what);		/* Exit poorly */
#endif /* NOCCTRAP */
    SIGRETURN;
}

/*  C C _ C L E A N  --  Cleanup after terminal interrupt handler */

#ifdef GEMDOS
int
cc_clean() {
    zclose(ZIFILE);			/* If we were transferring a file, */
    zclose(ZOFILE);			/* close it. */
    printf("^C...\n");			/* Not VMS, no problem... */
}
#endif /* GEMDOS */


/*  S T P T R A P -- Handle SIGTSTP (suspend) signals */

SIGTYP
stptrap(sig) int sig; {
#ifndef NOJC
    int x; extern int cmflgs;
    debug(F101,"stptrap() caught signal","",sig);
    if (!suspend) {
	printf("\r\nsuspend disabled\r\n");
#ifndef NOICP
	if (what == W_COMMAND) {	/* If we were parsing commands */
	    prompt(xxstring);		/* reissue the prompt and partial */
	    if (!cmflgs)		/* command (if any) */
	      printf("%s",cmdbuf);
	}
#endif /* NOICP */
    } else {
	conres();			/* Reset the console */
#ifndef OS2
	/* Flush pending output first, in case we are continued */
	/* in the background, which could make us block */
	fflush(stdout);

	x = psuspend(suspend);		/* Try to suspend. */
	if (x < 0)
#endif /* OS2 */
	  printf("Job control not supported\r\n");
	conint(trap,stptrap);		/* Rearm the trap. */
	debug(F100,"stptrap back from suspend","",0);
	switch (what) {
	  case W_CONNECT:		/* If suspended during CONNECT? */
	    conbin((char)escape);	/* put console back in binary mode */
	    debug(F100,"stptrap W_CONNECT","",0);
	    break;
#ifndef NOICP
	  case W_COMMAND:		/* Suspended in command mode */
	    debug(F101,"stptrap W_COMMAND pflag","",pflag);
	    concb((char)escape);	/* Put back CBREAK tty mode */
	    if (pflag) {		/* If command parsing was */
		prompt(xxstring);	/* reissue the prompt and partial */
		if (!cmflgs)		/* command (if any) */
		  printf("%s",cmdbuf);
	    }
	    break;
#endif /* NOICP */
	  default:			/* All other cases... */
	    debug(F100,"stptrap default","",0);
	    concb((char)escape);	/* Put it back in CBREAK mode */
	    break;
	}
    }
#endif /* NOJC */
    SIGRETURN;
}

#ifndef MAC
/*
  The rest of this file is for all implementations but the Macintosh.
*/

/*  C H K I N T  --  Check for console interrupts  */

int
chkint() {
    int ch, cn; long zz;

    if ((!local) || (quiet)) return(0);	/* Only do this if local & not quiet */
#ifdef datageneral
    if (con_reads_mt)                   /* if conint_mt task is active */
        if (conint_avl) {               /* and there's an interrupt pending */
            cn = 1;                     /* process it */
            ch = conint_ch;
            conint_avl = 0;             /* turn off flag so conint_mt can */
        } else                          /* proceed */
            return(0);
    else                                /* if conint_mt not active */
        if ((ch = coninc(2)) < 0)       /* try to get char manually */
            return(0);                  /* I/O error, or no data */
        else                            /* if successful, set cn so we */
            cn = 1;                     /* know we got one */
    debug(F101,"chkint got keyboard character",ch,cn);
#else
    cn = conchk();			/* Any input waiting? */
    debug(F101,"conchk","",cn);
    if (cn < 1) return(0);
    if ((ch = coninc(5)) < 0) return(0);
#endif /* datageneral */

    switch (ch & 0177) {
      case 'A': case 'a': case 0001:		/* Status report */
	if (fdispla != XYFD_R && fdispla != XYFD_S)
	  return(0);	                        /* Only for serial or simple */
	screen(SCR_TN,0,0l,"Status report:");
	screen(SCR_TN,0,0l," file type: ");
	if (binary) {
#ifdef VMS
	    if (binary == XYFT_I)		/* VMS-only file types */
	      screen(SCR_TZ,0,0l,"image");
	    else if (binary == XYFT_L)
	      screen(SCR_TZ,0,0l,"labeled");
	    else screen(SCR_TZ,0,0l,"binary");
#else
	    screen(SCR_TZ,0,0l,"binary");
#endif /* VMS */
	} else {
	    screen(SCR_TZ,0,0l,"text");
	}
	screen(SCR_QE,0,filcnt," file number");
	if (fsize) screen(SCR_QE,0,fsize," size");
	screen(SCR_QE,0,ffc,   " characters so far");
	if (fsize > 0L) {
	    zz = ( ffc * 100L ) / fsize;
	    screen(SCR_QE,0,zz,      " percent done");
	}
	if (bctu == 4) {		/* Block check */
	    screen(SCR_TU,0,0L," block check: ");
	    screen(SCR_TZ,0,0L,"blank-free-2");
	} else screen(SCR_QE,0,(long)bctu,  " block check");
	screen(SCR_QE,0,(long)rptflg," compression");
	screen(SCR_QE,0,(long)ebqflg," 8th-bit prefixing");
	screen(SCR_QE,0,(long)lscapu," locking shifts");
	if (!network)
	  screen(SCR_QE,0, speed, " speed");
	if (what == W_SEND)
	  screen(SCR_QE,0,(long)spsiz, " packet length");
	else if (what == W_RECV || what == W_REMO)
	  screen(SCR_QE,0,(long)urpsiz," packet length");
	screen(SCR_QE,0,(long)wslots,  " window slots");
	return(0);

      case 'B': case 'b': case 0002:	/* Cancel batch */
      case 'Z': case 'z': case 0032:
	screen(SCR_TN,0,0l,"Cancelling Batch ");
	czseen = 1;
	return(0);

      case 'F': case 'f': case 0006:	/* Cancel file */
      case 'X': case 'x': case 0030:
	screen(SCR_TN,0,0l,"Cancelling File ");
	cxseen = 1;
	return(0);

      case 'R': case 'r': case 0022:	/* Resend */
      case 0015: case 0012:
	screen(SCR_TN,0,0l,"Resending packet ");
	numerrs++;
	resend(winlo);
	return(1);

      case 'E': case 'e':		/* Send error packet */
      case 0005:
	return(-1);

#ifdef datageneral
      case '\03':                       /* We're not trapping ^C's with */
        trap(0);                        /* signals, so we check here    */
#endif /* datageneral */

      default:				/* Anything else, print message */
	intmsg(1);
	return(0);
    }
}

/*  I N T M S G  --  Issue message about terminal interrupts  */

VOID
#ifdef CK_ANSIC
intmsg(long n)
#else
intmsg(n) long n;
#endif /* CK_ANSIC */
/* intmsg */ {
    char buf[80];

    if (!displa || quiet)		/* Not if we're being quiet */
      return;
    if (server && (!srvdis || n > -1L))	/* Special for server */
      return;
    buf[0] = NUL;			/* Keep compilers happy */
#ifdef SVORPOSIX
    conchk();				/* Clear out pending escape-signals */
#endif /* SVORPOSIX */
#ifdef VMS
    conres();				/* So Ctrl-C will work */
#endif /* VMS */
    if ((!server && n == 1L) || (server && n < 0L)) {

#ifdef SVORPOSIX			/* We need to signal before kb input */
#ifndef aegis
#ifndef datageneral
	sprintf(buf,"Type escape character (%s) followed by:",dbchr(escape));
	screen(SCR_TN,0,0l,buf);
#endif /* datageneral */
#endif /* aegis */
#endif /* SVORPOSIX */

 screen(SCR_TN,0,0l,"X to cancel file,  CR to resend current packet");
 screen(SCR_TN,0,0l,"Z to cancel group, A for status report");
 screen(SCR_TN,0,0l,"E to send Error packet, Ctrl-C to quit immediately: ");
/* if (server) */ screen(SCR_TN,0,0l,"");
    }
    else screen(SCR_TU,0,0l," ");
}

static int newdpy = 0;			/* New display flag */
static char fbuf[80];			/* Filename buffer */
static char abuf[80];			/* As-name buffer */
static long oldffc = 0L;
static long dots = 0L;
static int hpos = 0;

static VOID				/* Initialize Serial or CTR display */
dpyinit() {
    newdpy = 0;				/*  Don't do this again */
    oldffc = 0L;			/*  Reset this */
    dots = 0L;				/*  and this.. */
    conoll("");						/* New line */
    if (what == W_SEND) conol("Sending: "); 		/* Action */
    else if (what == W_RECV) conol("Receiving: ");
    conol(fbuf);
    if (*abuf) conol(" => "); conoll(abuf); 		/* Names */
    *fbuf = NUL; *abuf = NUL;
    if (fsize > -1L) {					/* Size */
	sprintf(fbuf,"Size: %ld, Type: ",fsize);
	conol(fbuf); *fbuf = NUL;
    } else conol("Size: unknown, Type: ");
    if (binary) {					/* Type */
#ifdef VMS
	if (binary == XYFT_I)		/* VMS-only file types */
	  conoll("image");
	else if (binary == XYFT_L)
	  conoll("labeled");
	else
#endif /* VMS */
	  conoll("binary");
    } else conoll("text");
    if (fdispla == XYFD_S) {		/* CRT field headings */

/*
  Define CK_CPS to show current transfer rate.
  Leave it undefined to show estimated time remaining.
  Estimated-time-remaining code from Andy Fyfe, not tested on
  pathological cases.
*/
#define CK_CPS

#ifdef CK_CPS
	conoll("    File   Percent       Packet");
	conoll("    Bytes  Done     CPS  Length");
#else
	conoll("    File   Percent  Secs Packet");
	conoll("    Bytes  Done     Left Length");
#endif /* CK_CPS */
	newdpy = 0;
    }
    hpos = 0;
}

/*
  showpkt(c)
  c = completion code: 0 means transfer in progress, nonzero means it's done.
  show the file transfer progress counter and perhaps verbose packet type.
  Original by: Kai Uwe Rommel.
*/
VOID
#ifdef CK_ANSIC
showpkt(char c)
#else
showpkt(c) char c;
#endif /* CK_ANSIC */
/* showpkt */ {

    if (newdpy)				/* Put up filenames, etc, */
      dpyinit();			/* if they're not there already. */

    if (fdispla == XYFD_S) {		/* CRT display */
	char buffer[40];
	long et;			/* Elapsed time, entire batch  */
	long pd;			/* Percent done, this file     */
	long tp;			/* Transfer rate, entire batch */
	long ps;			/* Packet size, current packet */
	long myffc, mytfc;		/* Local copies of byte counters */

	et = gtimer();			/* Elapsed time  */
	ps = (what == W_RECV) ? rpktl+1 : spktl+1; /* Packet length */
	pd = -1;			/* Percent done. */
	if (c == NUL) {			/* Still going, figure % done */
	    if (fsize == 0L) return;	/* Empty file, don't bother */
	    pd = (fsize > 99L) ? (ffc / (fsize / 100L)) : 0L;
	    if (pd > 100) pd = 100;	/* Expansion */
	} else pd = 100;		/* File complete, so 100%. */

#ifndef CK_CPS
/*
  fsecs = time (from gtimer) that this file started (set in sfile()).
  Rate so far is ffc / (et - fsecs),  estimated time for remaining bytes
  is (fsize - ffc) / ( ffc / (et - fsecs )).
*/
	tp = (ffc > 0L) ? (fsize - ffc) * (et - fsecs) / ffc : 0L;
#endif /* CK_CPS */

	myffc = (ffc > 0) ? ffc - 1L : ffc; /* No, I don't know why... */
	if (myffc < 0L) myffc = 0L;
#ifdef CK_CPS
	mytfc = (pd < 100) ? tfc + myffc : tfc;
	tp = (et > 0) ? mytfc / et : 0; /* Transfer rate */
	if (c && (tp == 0))		/* Watch out for subsecond times */
	  tp = myffc;
#endif /* CK_CPS */
	if (pd > -1L)
	  sprintf(buffer, "%c%9ld%5ld%%%8ld%8ld ", CR, myffc, pd, tp, ps);
	else
	  sprintf(buffer, "%c%9ld      %8ld%8ld ", CR, myffc, tp, ps);
	conol(buffer);
	hpos = 31;
    } else {				/* SERIAL display */
	long i, k;
	if (ffc - oldffc < 1024)	/* Update display every 1K */
	  return;
	oldffc = ffc;			/* Time for new display */
	k = (ffc / 1024L) - dots;	/* How many K so far */
	for (i = 0L; i < k; i++) {
	    if (hpos++ > 77) {		/* Time to wrap? */
		conoll("");
		hpos = 0;
	    }
	    conoc('.');			/* Print a dot for this K */
	    dots++;			/* Count it */
	}
    }
}

/*  S C R E E N  --  Screen display function  */

/*
  screen(f,c,n,s)
    f - argument descriptor
    c - a character or small integer
    n - a long integer
    s - a string.
  Fill in this routine with the appropriate display update for the system.
    FILE DISPLAY SERIAL:     Default, works on any terminal, even hardcopy.
    FILE DISPLAY CRT:        Works on any CRT, writes over current line.
    FILE DISPLAY FULLSCREEN: Requires terminal-dependent screen control.
*/
VOID
#ifdef CK_ANSIC
screen(int f, char c,long n,char *s)
#else
screen(f,c,n,s) int f; char c; long n; char *s;
#endif /* CK_ANSIC */
/* screen */ {
    char buf[80];
    int len;				/* Length of string */
#ifdef UNIX
#ifndef NOJC
    int obg;
_PROTOTYP( VOID conbgt, (int) );

    if (local) {
	obg = backgrd;			/* Previous background status */
	conbgt(1);			/* See if running in background */
	if (!backgrd && obg) {		/* Just came into foreground? */
	    concb((char)escape);	/* Put console back in CBREAK mode */
	    conint(trap,stptrap);	/* Turn interrupts back on. */
	}
    }
#endif /* NOJC */
#endif /* UNIX */

    if ((f != SCR_WM) && (f != SCR_EM)) /* Always update warnings & errors */
      if (!displa || quiet || backgrd || fdispla == XYFD_N ||
	  (server && !srvdis))
	return;

#ifdef CK_CURSES
    if (fdispla == XYFD_C) {		/* If fullscreen display selected */
	screenc(f,c,n,s);		/* call the fullscreen version */
	return;
    }
#endif /* CK_CURSES */

    len = (int)strlen(s);		/* Length of string */

    switch (f) {			/* Handle our function code */

case SCR_FN:    			/* Filename */
#ifdef MAC
    conoll(""); conol(s); conoc(SP); hpos = len + 1;
#else
    strncpy(fbuf,s,80);
    newdpy = 1;				/* New file so refresh display */
#endif /* MAC */
    return;

case SCR_AN:    			/* As-name */
#ifdef MAC
    if (hpos + len > 75) { conoll(""); hpos = 0; }
    conol("=> "); conol(s);
    if ((hpos += (len + 3)) > 78) { conoll(""); hpos = 0; }
#else
    strncpy(abuf,s,80);
#endif /* MAC */
    return;

case SCR_FS: 				/* File-size */
#ifdef MAC
    sprintf(buf,", Size: %ld",n);  conoll(buf);  hpos = 0;
#endif /* MAC */
    return;

case SCR_XD:    			/* X-packet data */
#ifdef MAC
    conoll(""); conoll(s); hpos = 0;
#else
    strncpy(fbuf,s,80);
#endif /* MAC */
    return;

case SCR_ST:      			/* File status */
    switch (c) {
      case ST_OK:   	   		/* Transferred OK */
	showpkt('Z');			/* Update numbers one last time */
	if ((hpos += 5) > 78) conoll(""); /* Wrap screen line if necessary. */
	conoll(" [OK]"); hpos = 0;	/* Print OK message. */
	if (fdispla == XYFD_S) {	/* We didn't show Z packet when */
	    conoc('Z');			/* it came, so show it now. */
	    hpos = 1;
	}
	return;	      

      case ST_DISC: 			/*  Discarded */
	if ((hpos += 12) > 78) conoll("");
	conoll(" [discarded]"); hpos = 0;
	return;

      case ST_INT:       		/*  Interrupted */
	if ((hpos += 14) > 78) conoll("");
	conoll(" [interrupted]"); hpos = 0;
	return;

      case ST_SKIP: 			/*  Skipped */
	if ((hpos += 10) > 78) conoll("");
	conol(" [skipped]"); hpos = 0;
	return;

      case ST_ERR:			/* Error */
	conoll("");
	conol("Error: "); conoll(s); hpos = 0;
	return;

      case ST_REFU:			/* Refused */
	conoll("");
	conol("Refused: "); conoll(s); hpos = 0;
	return;

      case ST_INC:       		/* Incomplete */
	if ((hpos += 12) > 78) conoll("");
	conoll(" [incomplete]"); hpos = 0;
	return;

      default:
	conoll("*** screen() called with bad status ***");
	hpos = 0;
	return;
    }

#ifdef MAC
case SCR_PN:    			/* Packet number */
    sprintf(buf,"%s: %ld",s,n); conol(buf); hpos += (int)strlen(buf); return;
#endif /* MAC */

case SCR_PT:    			/* Packet type or pseudotype */
    if (c == 'Y') return;		/* Don't bother with ACKs */
    if (c == 'D') {			/* In data transfer phase, */
	showpkt(NUL);			/* show progress. */
	return;
    }
#ifndef AMIGA
    if (hpos++ > 77) {			/* If near right margin, */
	conoll("");			/* Start new line */
	hpos = 0;			/* and reset counter. */
    }
#endif /* AMIGA */
    if (c == 'Z' && fdispla == XYFD_S)
      return;
    else
      conoc(c);				/* Display the packet type. */
#ifdef AMIGA
    if (c == 'G') conoll("");           /* New line after G packets */
#endif /* AMIGA */
    return;

case SCR_TC:    			/* Transaction complete */
    conoc(BEL); conoll(""); return;

case SCR_EM:				/* Error message */
    conoll(""); conoc('?'); conoll(s); hpos = 0; return;

case SCR_WM:				/* Warning message */
    conoll(""); conoll(s); hpos = 0; return;

case SCR_TU:				/* Undelimited text */
    if ((hpos += len) > 77) { conoll(""); hpos = len; }
    conol(s); return;

case SCR_TN:				/* Text delimited at beginning */
    conoll(""); conol(s); hpos = len; return;

case SCR_TZ:				/* Text delimited at end */
    if ((hpos += len) > 77) { conoll(""); hpos = len; }
    conoll(s); return;

case SCR_QE:				/* Quantity equals */
    sprintf(buf,"%s: %ld",s,n);
    conoll(buf); hpos = 0; return;

case SCR_CW:				/* Close fullscreen window */
    return;				/* No window to close */

default:
    conoll("*** screen() called with bad object ***");
    hpos = 0;
    return;
    }
}

/*  E R M S G  --  Nonfatal error message  */

/* Should be used only for printing the message text from an Error packet. */

VOID
ermsg(msg) char *msg; {			/* Print error message */
    if (local)
      screen(SCR_EM,0,0L,msg);
    tlog(F110,"Protocol Error:",msg,0L);
}

VOID
doclean() {				/* General cleanup upon exit */
#ifndef NOICP
#ifndef NOSPL
    extern struct mtab *mactab;		/* For ON_EXIT macro. */
    extern int nmac;
#endif /* NOSPL */
#endif /* NOICP */

#ifdef DEBUG
    if (deblog) {			/* Close any open logs. */
	debug(F100,"Debug Log Closed","",0);
	*debfil = '\0';
	deblog = 0;
	zclose(ZDFILE);
    }
#endif /* DEBUG */
    if (pktlog) {
	*pktfil = '\0';
	pktlog = 0;
	zclose(ZPFILE);
    }
    if (seslog) {
    	*sesfil = '\0';
	seslog = 0;
	zclose(ZSFILE);
    }
#ifdef TLOG
    if (tralog) {
	tlog(F100,"Transaction Log Closed","",0L);
	*trafil = '\0';
	tralog = 0;
	zclose(ZTFILE);
    }
#endif /* TLOG */

#ifndef NOICP
#ifndef NOSPL
    zclose(ZRFILE);			/* READ and WRITE files, if any. */
    zclose(ZWFILE);
#ifndef NODIAL
    if (dialfd) fclose(dialfd);		/* Dial directory, if any. */
#endif /* NODIAL */
/*
  If a macro named "on_exit" is defined, execute it.  Also remove it from the
  macro table, in case its definition includes an EXIT or QUIT command, which
  would cause much recursion and would prevent the program from ever actually
  EXITing.
*/
    if (nmac) {				/* Any macros defined? */
	int k;				/* Yes */
	k = mlook(mactab,"on_exit",nmac); /* Look up "on_exit" */
	if (k >= 0) {			/* If found, */
	    *(mactab[k].kwd) = NUL;	/* poke its name from the table, */
	    if (dodo(k,"") > -1)	/* set it up, */
	      parser(1);		/* and execute it */
        }
    }
#endif /* NOSPL */
#endif /* NOICP */

/*
  Put console terminal back to normal.  This is done here because the
  ON_EXIT macro calls the parser, which meddles with console terminal modes.
*/
    ttclos(0);				/* Close external line, if any */
    if (local) {
	strcpy(ttname,dftty);		/* Restore default tty */
	local = dfloc;			/* And default remote/local status */
    }
    conres();				/* Restore console terminal. */

#ifdef COMMENT
/* Should be no need for this, and maybe it's screwing things up? */
    connoi();				/* Turn off console interrupt traps */
#endif /* COMMENT */

    syscleanup();			/* System-dependent cleanup, last */
}

/*  D O E X I T  --  Exit from the program.  */

/*
  First arg is general, system-independent symbol: GOOD_EXIT or BAD_EXIT.
  If second arg is -1, take 1st arg literally.
  If second arg is not -1, work it into the exit code.
*/
VOID
doexit(exitstat,what) int exitstat, what; {
#ifdef VMS
    char envstr[64];
    static $DESCRIPTOR(symnam,"CKERMIT_STATUS");
    static struct dsc$descriptor_s symval;
    int i;
#endif /* VMS */

    debug(F101,"doexit exitstat","",exitstat);
    debug(F101,"doexit what","",what);

    doclean();				/* First, clean up everything */

#ifdef VMS
    if (what == -1)
	what = 0;			/* Since we set two different items */
    sprintf(envstr,"%d", exitstat | what);
    symval.dsc$w_length = (int)strlen(envstr);
    symval.dsc$a_pointer = envstr;
    symval.dsc$b_class = DSC$K_CLASS_S;
    symval.dsc$b_dtype = DSC$K_DTYPE_T;
    i = 2;				/* Store in global table */
    LIB$SET_SYMBOL(&symnam, &symval, &i);
    if (exitstat == BAD_EXIT)
	exitstat = SS$_ABORT | STS$M_INHIB_MSG;
    if (exitstat == GOOD_EXIT)
	exitstat = SS$_NORMAL | STS$M_INHIB_MSG;
    exit(exitstat);
#else /* Not VMS */
    if (what == -1)			/* Take 1st arg literally */
      exit(exitstat);			/* e.g. user-supplied exit code */
    else				/* otherwise */
      exit(exitstat | what);		/* OR in the bits */
#endif /* VMS */
}

/* Set up interrupts */

VOID
setint() {
    conint(trap,stptrap);       /* Turn on console terminal interrupts. */
    bgchk();	    	        /* Check background status */
}

VOID
bgchk() {				/* Check background status */
    if (bgset < 0)
      pflag = !backgrd;			/* Set prompt flag */
    else				/* based on foreground/background */
      pflag = (bgset == 0 ? 1 : 0);

    /* Message flag on only if at top level, pflag is on, and QUIET is OFF */

    if (
#ifndef NOSPL
	cmdlvl == 0
#else
	tlevel < 0
#endif /* NOSPL */
	)
      msgflg = (pflag == 0) ? 0 : !quiet;
    else msgflg = 0;
}

#ifdef DEBUG
/*  D E B U G  --  Enter a record in the debugging log  */

/*
 Call with a format, two strings, and a number:
   f  - Format, a bit string in range 0-7.
        If bit x is on, then argument number x is printed.
   s1 - String, argument number 1.  If selected, printed as is.
   s2 - String, argument number 2.  If selected, printed in brackets.
   n  - Int, argument 3.  If selected, printed preceded by equals sign.

   f=0 is special: print s1,s2, and interpret n as a char.
*/
#define DBUFL 2300
static char *dbptr = (char *)0;

int
dodebug(f,s1,s2,n) int f; char *s1, *s2; long n; {
    char *sp;

    if (!deblog) return(0);	/* If no debug log, don't. */
    if (!dbptr) {
	dbptr = malloc(DBUFL+1);
	if (!dbptr)
	  return(0);
    }
    sp = dbptr;
    if (!s1) s1="(NULL)";
    if (!s2) s2="(NULL)";
    switch (f) {
    	case F000:		/* 0, print both strings, and n as a char */
	    if ((int)strlen(s1) + (int)strlen(s2) + 5 > DBUFL) {
		sprintf(sp,"DEBUG string too long\n");
	    } else {
		if (n > 31 && n < 127)
		  sprintf(sp,"%s%s:%c\n",s1,s2,n);
		else if (n < 32 || n == 127)
		  sprintf(sp,"%s%s:^%c\n",s1,s2,(n+64) & 0x7F);
		else if (n > 127 && n < 160)
		  sprintf(sp,"%s%s:~^%c\n",s1,s2,(n-64) & 0x7F);
		else if (n > 159 && n < 256)
		  sprintf(sp,"%s%s:~%c\n",s1,s2,n & 0x7F);
		else sprintf(sp,"%s%s:%ld\n",s1,s2,n);
	    }
	    if (zsout(ZDFILE,dbptr) < 0) deblog = 0;
	    break;
    	case F001:			/* 1, "=n" */
	    sprintf(sp,"=%ld\n",n);
	    if (zsout(ZDFILE,dbptr) < 0) deblog = 0;
	    break;
    	case F010:			/* 2, "[s2]" */
	    if ((int)strlen(s2) + 4 > DBUFL)
	      sprintf(sp,"DEBUG string too long\n");
	    else sprintf(sp,"[%s]\n",s2);
	    if (zsout(ZDFILE,"") < 0) deblog = 0;
	    break;
    	case F011:			/* 3, "[s2]=n" */
	    if ((int)strlen(s2) + 15 > DBUFL)
	      sprintf(sp,"DEBUG string too long\n");
	    else sprintf(sp,"[%s]=%ld\n",s2,n);
	    if (zsout(ZDFILE,dbptr) < 0) deblog = 0;
	    break;
    	case F100:			/* 4, "s1" */
	    if (zsoutl(ZDFILE,s1) < 0) deblog = 0;
	    break;
    	case F101:			/* 5, "s1=n" */
	    if ((int)strlen(s1) + 15 > DBUFL)
	      sprintf(sp,"DEBUG string too long\n");
	    else sprintf(sp,"%s=%ld\n",s1,n);
	    if (zsout(ZDFILE,dbptr) < 0) deblog = 0;
	    break;
    	case F110:			/* 6, "s1[s2]" */
	    if ((int)strlen(s1) + (int)strlen(s2) + 4 > DBUFL)
	      sprintf(sp,"DEBUG string too long\n");
	    else sprintf(sp,"%s[%s]\n",s1,s2);
	    if (zsout(ZDFILE,dbptr) < 0) deblog = 0;
	    break;
    	case F111:			/* 7, "s1[s2]=n" */
	    if ((int)strlen(s1) + (int)strlen(s2) + 15 > DBUFL)
	      sprintf(sp,"DEBUG string too long\n");
	    else sprintf(sp,"%s[%s]=%ld\n",s1,s2,n);
	    if (zsout(ZDFILE,dbptr) < 0) deblog = 0;
	    break;
	default:
	    sprintf(sp,"\n?Invalid format for debug() - %d\n",f);
	    if (zsout(ZDFILE,dbptr) < 0) deblog = 0;
    }
    return(0);
}
#endif /* DEBUG */

#ifdef TLOG
#define TBUFL 300
/*  T L O G  --  Log a record in the transaction file  */
/*
 Call with a format and 3 arguments: two strings and a number:
   f  - Format, a bit string in range 0-7, bit x is on, arg #x is printed.
   s1,s2 - String arguments 1 and 2.
   n  - Int, argument 3.
*/
VOID
tlog(f,s1,s2,n) int f; long n; char *s1, *s2; {
    static char s[TBUFL];
    char *sp = s; int x;

    if (!tralog) return;		/* If no transaction log, don't */
    switch (f) {
    	case F000:			/* 0 (special) "s1 n s2"  */
	    if ((int)strlen(s1) + (int)strlen(s2) + 15 > TBUFL)
	      sprintf(sp,"?T-Log string too long\n");
	    else sprintf(sp,"%s %ld %s\n",s1,n,s2);
	    if (zsout(ZTFILE,s) < 0) tralog = 0;
	    break;
    	case F001:			/* 1, " n" */
	    sprintf(sp," %ld\n",n);
	    if (zsout(ZTFILE,s) < 0) tralog = 0;
	    break;
    	case F010:			/* 2, "[s2]" */
	    x = (int)strlen(s2);
	    if (s2[x] == '\n') s2[x] = '\0';
	    if (x + 6 > TBUFL)
	      sprintf(sp,"?T-Log string too long\n");
	    else sprintf(sp,"[%s]\n",s2);
	    if (zsout(ZTFILE,"") < 0) tralog = 0;
	    break;
    	case F011:			/* 3, "[s2] n" */
	    x = (int)strlen(s2);
	    if (s2[x] == '\n') s2[x] = '\0';
	    if (x + 6 > TBUFL)
	      sprintf(sp,"?T-Log string too long\n");
	    else sprintf(sp,"[%s] %ld\n",s2,n);
	    if (zsout(ZTFILE,s) < 0) tralog = 0;
	    break;
    	case F100:			/* 4, "s1" */
	    if (zsoutl(ZTFILE,s1) < 0) tralog = 0;
	    break;
    	case F101:			/* 5, "s1: n" */
	    if ((int)strlen(s1) + 15 > TBUFL)
	      sprintf(sp,"?T-Log string too long\n");
	    else sprintf(sp,"%s: %ld\n",s1,n);
	    if (zsout(ZTFILE,s) < 0) tralog = 0;
	    break;
    	case F110:			/* 6, "s1 s2" */
	    x = (int)strlen(s2);
	    if (s2[x] == '\n') s2[x] = '\0';
	    if ((int)strlen(s1) + x + 4 > TBUFL)
	      sprintf(sp,"?T-Log string too long\n");
	    else sprintf(sp,"%s %s\n",s1,s2);
	    if (zsout(ZTFILE,s) < 0) tralog = 0;
	    break;
    	case F111:			/* 7, "s1 s2: n" */
	    x = (int)strlen(s2);
	    if (s2[x] == '\n') s2[x] = '\0';
	    if ((int)strlen(s1) + x + 15 > TBUFL)
	      sprintf(sp,"?T-Log string too long\n");
	    else sprintf(sp,"%s %s: %ld\n",s1,s2,n);
	    if (zsout(ZTFILE,s) < 0) tralog = 0;
	    break;
	default:
	    sprintf(sp,"\n?Invalid format for tlog() - %ld\n",n);
	    if (zsout(ZTFILE,s) < 0) tralog = 0;
    }
}
#endif /* TLOG */

#ifdef CK_CURSES

/*
  There are three different ways to do fullscreen on VMS.
  1. Use the real curses library, VAXCCURSE.
  2. Use do-it-yourself code.
  3. Use the Screen Manager, SMG$.

  Method 1 doesn't work quite right; you can't call endwin(), so once you've
  started curses mode, you can never leave.

  Method 2 doesn't optimize the screen, and so much more time is spent in
  screen writes.  This actually causes file transfers to fail because the
  tty device input buffer can be overrun while the screen is being updated,
  especially on a slow MicroVAX that has small typeahead buffers.

  In the following #ifdef block, #define one of them and #undef the other 2.

  So now let's try method 3...
*/
#ifdef VMS
#define CK_SMG				/* Screen Manager */
#undef MYCURSES				/* Do-it-yourself */
#undef VMSCURSE				/* VAXCCURSE library */
#endif /* VMS */

/*  S C R E E N C  --  Screen display function, uses curses  */

/* Idea for curses display contributed by Chris Pratt of APV Baker, UK */

/* Avoid conficts with curses.h */

#ifndef MYCURSES
#undef VOID				/* This was defined in ckcdeb.h */
#endif /* MYCURSES */

#undef BS				/* These were defined in ckcasc.h */
#undef CR
#undef NL
#undef SO
#undef US

#ifdef VMS				/* VMS fullscreen display */
#ifdef MYCURSES				/* Do-it-yourself method */
extern int isvt52;			/* From CKVTIO.C */
#define printw printf
#else
#ifdef VMSCURSE				/* VMS curses library VAXCCURSE */
#include <curses.h> 
/* Note: Screen manager doesn't need a header file */
#endif /* VMSCURSE */
#endif /* MYCURSES */
#else					/* Not VMS */
#ifdef MYCURSES				/* Do-it-yourself method */
#define isvt52 0			/* Used by OS/2, VT-100/ANSI always */
#define printw printf
#else
#include <curses.h>			/* So use real curses */
#endif /* MYCURSES */
#endif /* VMS */

#ifdef CK_SMG
/*
  Long section for Screen Manager starts here...
  By William Bader.
*/
#include "ckvvms.h"
/* #include <smgdef.h> */
/* #include <smgmsg.h> */

extern unsigned int vms_status;	    /* Used for system service return status */

static long smg_pasteboard_id = -1;	/* pasteboard identifier */
static long smg_display_id = -1;	/* display identifier */
static int smg_open = 0;		/* flag if smg current open */

#define	clrtoeol()	SMG$ERASE_LINE(&smg_display_id, 0, 0)

#define clear()		SMG$ERASE_DISPLAY(&smg_display_id, 0, 0, 0, 0)

#define	touchwin(scr)	SMG$REPAINT_SCREEN(&smg_pasteboard_id)

static void
move(row, col) int row, col; {
    /* Change from 0-based for curses to 1-based for SMG */
    ++row; ++col;
    CHECK_ERR("move: smg$set_cursor_abs",
	      SMG$SET_CURSOR_ABS(&smg_display_id, &row, &col));
}

static void
refresh() {
    CHECK_ERR("refresh: smg$end_pasteboard_update",
	      SMG$END_PASTEBOARD_UPDATE(&smg_pasteboard_id));
    CHECK_ERR("refresh: smg$begin_pasteboard_update",
	      SMG$BEGIN_PASTEBOARD_UPDATE(&smg_pasteboard_id));
}

#ifdef VMS_V40
#define	OLD_VMS
#endif /* VMS_V40 */
#ifdef VMS_V42
#define	OLD_VMS
#endif /* VMS_V42 */
#ifdef VMS_V44
#define	OLD_VMS
#endif /* VMS_V44 */

static int
initscr() {
    int rows = 24, cols = 80;
    int row = 1, col = 1;

    if (smg_pasteboard_id == -1) { 	/* Open the screen */
#ifdef OLD_VMS
	CHECK_ERR("initscr: smg$create_pasteboard",
		  SMG$CREATE_PASTEBOARD(&smg_pasteboard_id, 0, 0, 0, 0));
#else
	/* For VMS V5, not tested */
	CHECK_ERR("initscr: smg$create_pasteboard",
		  SMG$CREATE_PASTEBOARD(&smg_pasteboard_id, 0, 0, 0, 0, 0));
#endif /* OLD_VMS */
    }

    if (smg_display_id == -1) {		/* Create a display window */

	CHECK_ERR("initscr: smg$create_virtual_display",
		  SMG$CREATE_VIRTUAL_DISPLAY(&rows, &cols, &smg_display_id,
					     0, 0, 0));

	/* Connect the display window to the screen */
	CHECK_ERR("initscr: smg$paste_virtual_display",
		  SMG$PASTE_VIRTUAL_DISPLAY(&smg_display_id,&smg_pasteboard_id,
					    &row,&col));
    }

    if (!smg_open) {			/* Start a batch update */
	smg_open = 1;
	CHECK_ERR("initscr: smg$begin_pasteboard_update",
		  SMG$BEGIN_PASTEBOARD_UPDATE(&smg_pasteboard_id));
    }
    return(1);
}

static void
endwin() {
    if (!smg_open)
      return;

    smg_open = 0;

    CHECK_ERR("endwin: smg$end_pasteboard_update",
	      SMG$END_PASTEBOARD_UPDATE(&smg_pasteboard_id));

    move(22, 0);

#ifdef COMMENT
/*
  These calls clear the screen.
*/
    CHECK_ERR("endwin: smg$delete_virtual_display",
	      SMG$DELETE_VIRTUAL_DISPLAY(&smg_display_id));
    smg_display_id = -1;

    CHECK_ERR("endwin: smg$delete_pasteboard",
	      SMG$DELETE_PASTEBOARD(&smg_pasteboard_id, 0));
    smg_pasteboard_id = -1;
#endif /* COMMENT */
}

static void printw(str, a1, a2, a3, a4, a5, a6, a7, a8)
char *str;
long a1, a2, a3, a4, a5, a6, a7, a8;
/* printw */ {
    char buf[255];
    $DESCRIPTOR(text_dsc, buf);

    text_dsc.dsc$w_length = sprintf(buf, str, a1, a2, a3, a4, a5, a6, a7, a8);
    CHECK_ERR("printw: smg$put_chars",
	      SMG$PUT_CHARS(&smg_display_id, &text_dsc, 0, 0, 0, 0, 0));
}
#endif /* CK_SMG */

#ifdef MYCURSES
/*
  Do-it-yourself curses implementation for VMS, OS/2 and other ANSI/VT-100's.
  Supports only the VT52 and VT1xx (and later VT2xx/3xx/4xx) terminals.
  By Terry Kennedy, St Peters College.
 
  First, some stuff we can just ignore:
*/

int
touchwin(x) int x; {
}
int
initscr() {
}
int
refresh() {
}
int
endwin() {
}

/*
 * Now, some stuff we need to do:
 */

_PROTOTYP( int move, (int, int) );

int
move(row, col) int row, col; {
    if (isvt52)
      printf("\033Y%c%c", row + 037, col + 037);
    else
      printf("\033[%d;%dH", row + 1, col + 1);
}

int
clear() {
    move(1,1);
    if (isvt52)
      printf("\033J");
    else
      printf("\033[J");
}

int
clrtoeol() {
    if (isvt52)
      printf("\033K");
    else
      printf("\033[K");
}
#endif /* MYCURSES */

/* Screen line numbers */

#define CW_BAN  0			/* Curses Window Banner */
#define CW_DIR  2			/* Current directory */
#define CW_LIN  3			/* Communication device */
#define CW_SPD  4			/* Communication speed */
#define CW_PAR  5			/* Parity */
#define CW_NAM  7			/* Filename */
#define CW_TYP  8			/* File type */
#define CW_SIZ  9			/* File size */
#define CW_PCD 10			/* Percent done */
#define CW_TR  11			/* Time remaining */
#define CW_WS  12			/* Window slots */
#define CW_PT  13			/* Packet type */
#define CW_PC  14			/* Packet count */
#define CW_PL  15			/* Packet length */
#define CW_PR  16			/* Packet retry */
#define CW_PB  17			/* Packet block check */
#define CW_ERR 19			/* Error message */
#define CW_MSG 20			/* Info message */
#define CW_INT 22			/* Instructions */

static int cinit = 0;			/* Flag for curses init'd */
static int cendw = 0;			/* endwin() was called */

static
#ifdef CK_ANSIC				/* Because VOID used by curses.h */
void
#else
#ifdef MYCURSES
VOID
#else
int
#endif /* MYCURSES */
#endif /* CK_ANSIC */
scrft() {				/* Display file type */
    move(CW_TYP,22);
    if (binary) {
#ifdef VMS
	if (binary == XYFT_I)
	  printw("image");
	else if (binary == XYFT_L)
	  printw("labeled");
	else printw("binary");
#else /* Not VMS */
	printw("binary");
#endif /* VMS */
    } else {
	printw("text");
    }
    clrtoeol();
    return;
}

char *					/* Convert seconds to hh:mm:ss */
#ifdef CK_ANSIC
hhmmss(long x)
#else
hhmmss(x) long x;
#endif /* CK_ANSIC */
/* hhmmss(x) */ {
    static char buf[10];
    long s, h, m;
    h = x / 3600L;			/* Hours */
    x = x % 3600L;
    m = x / 60L;			/* Minutes */
    s = x % 60L;			/* Seconds */
    if (x > -1L)
      sprintf(buf,"%02ld:%02ld:%02ld",h,m,s);
    else buf[0] = NUL;
    return((char *)buf);
}

#ifdef CK_NEWTERM
static FILE *ck_stdout = NULL;
static int ck_fd = -1;
#endif /* CK_NEWTERM */

static long pct = 100, oldpct = 0;	/* Percent done */
static int oldtyp = 0, oldwin = -1, oldtry = -1, oldlen = -1;

#ifdef CK_ANSIC
void
screenc(int f, char c,long n,char *s)
#else
#ifdef MYCURSES
VOID
#else
int
#endif /* MYCURSES */
screenc(f,c,n,s)
int f;		/* argument descriptor */
char c;		/* a character or small integer */
long n;		/* a long integer */
char *s;	/* a string */
#endif /* CK_ANSIC */
/* screenc() */ {

    static int q = 0;
    static long fsiz = -1L;		/* Copy of file size */
    static long fcnt = 0L;		/* File count */
    static long fbyt = 0L;		/* Total file bytes */

    int len;				/* Length of string */
    int x;				/* Worker */

    if (cinit == 0 || cendw > 0) {	/* Handle borderline cases... */
	if (f == SCR_CW) {		/* Close window, but it's not open */
	    ft_win = 0;
	    return;
	}
	if (f == SCR_EM ||
	   (f == SCR_PT && c == 'E')) {	/* Fatal error before window open */
	    conoll(""); conoc('?'); conoll(s); return; /* Regular display */
	}
    }
    if (cinit == 0) {			/* Only call initscr() once */
	cendw = 1;			/* New window needs repainting */
#ifdef COMMENT
	if (!initscr()) {		/* Oops, can't initialize window? */
/*
  In fact, this doesn't happen.  "man curses" says initscr() halts the
  entire program if it fails, which is true on the systems where I've
  tested it.  It will fail if your terminal type is not known to it.
  That's why SET FILE DISPLAY FULLSCREEN calls tgetent() to make sure the
  terminal type is known before allowing a curses display.
*/
	    fprintf(stderr,"CURSES INITSCR ERROR\r\n");
	    fdispla = XYFD_R;		/* Go back to regular display */
	    return;
	} else {
	    cinit++;			/* Window initialized ok */
	    debug(F100,"CURSES INITSCR OK","",0);
	}
#else					/* Save some memory. */
#ifdef CK_NEWTERM
	/* (From Andy Fyfe <andy@vlsi.cs.caltech.edu>)
	   System V curses seems to reserve the right to alter the buffering
	   on the output FILE* without restoring it.  Fortunately System V
	   curses provides newterm(), an alternative to initscr(), that
	   allows us to specify explicitly the terminal type and input and
	   output FILE pointers.  Thus we duplicate stdout, and let curses
	   have the copy.  The original remains unaltered.  Unfortunately,
	   newterm() seems to be particular to System V.
	*/
	s = getenv("TERM");
	if (ck_fd < 0) {
	    ck_fd = dup(fileno(stdout));
	    ck_stdout = (ck_fd >= 0) ? fdopen(ck_fd, "w") : NULL;
	}
	if (ck_stdout == NULL || newterm(s, ck_stdout, stdin) == 0) {
	    fprintf(stderr,
	      "Fullscreen display not supported for terminal type: %s\r\n",s);
	    fdispla = XYFD_R;		/* Go back to regular display */
	    return;
	}
#else
	initscr();			/* Initialize curses. */
#endif /* CK_NEWTERM */
	cinit++;			/* Remember curses was initialized. */
#endif /* COMMENT */
    }
    ft_win = 1;				/* Window is open */
    if (cendw) {			/* endwin() was called previously */
#ifdef VMS
	initscr();			/* (or should have been!) */
	clear();
	touchwin(stdscr);
	refresh();
#else /* All others... */
	clear();
#endif /* VMS */

	move(CW_BAN,0);			/* Display the banner */
	if (*myhost) printw("%s, %s",versio,(char *)myhost);
	else printw("%s",versio);
	move(CW_DIR,3);  printw("Current Directory: %s",zgtdir());
	if (network) {
	    move(CW_LIN,9); printw("Remote Host: %s",ttname);
	} else {
	    move(CW_LIN,0);  printw("Communication Device: %s",ttname);
	}
	move(CW_SPD,1);  printw("Communication Speed: ");
	move(CW_SPD,22);		/* Speed */
	if (network) {
	    printw("(network)");
	} else {
	    if (speed < 0L) speed = ttgspd();
	    if (speed > 0L) {
		if (speed == 8880) printw("75/1200");
		else printw("%ld",speed);
	    } else printw("unknown");
	}
	move(CW_PAR,14); printw("Parity: %s",parnam((char)parity));
	move(CW_TYP,11); printw("File Type:");
	move(CW_SIZ,11); printw("File Size:");
	move(CW_PCD, 8); printw("Percent Done:");
	move(CW_TR,  1); printw("Estimated Time Left:");
	move(CW_WS,  8); printw("Window Slots:");
	move(CW_PT,  9); printw("Packet Type:");
	move(CW_PC,  8); printw("Packet Count:");
	move(CW_PL,  7); printw("Packet Length:");
	move(CW_PR,  2); printw("Packet Retry Count:");
	move(CW_PB,  2); printw("Packet Block Check:");
	move(CW_ERR,10); printw("Last Error:");
	move(CW_MSG, 8); printw("Last Message:");
#ifdef ATTSV
#ifndef aegis
#ifndef datageneral
#define CK_NEED_SIG
#endif /* datageneral */
#endif /* aegis */
#endif /* ATTSV */
#ifdef POSIX
#ifndef CK_NEED_SIG
#define CK_NEED_SIG
#endif /* CK_NEED_SIG */
#endif /* POSIX */

#ifdef CK_NEED_SIG
	move(CW_INT, 0); printw(
"<%s>X to cancel file, <%s>Z to cancel group, <%s><CR> to resend packet",
				dbchr(escape), dbchr(escape), dbchr(escape));
	move(CW_INT + 1, 0); printw(
"<%s>E to send Error packet, or Ctrl-C to quit immediately.", dbchr(escape));
#else
	move(CW_INT, 0);
#ifdef OS2
	printw(
	  "X to cancel file, Z to cancel group, <Enter> to resend packet,");
#else
	printw("X to cancel file, Z to cancel group, <CR> to resend packet,");
#endif /* OS2 */
	move(CW_INT + 1, 0);
	printw("E to send Error packet, or Ctrl-C to quit immediately.");
#endif /* CK_NEED_SIG */
	refresh();
	cendw = 0;
    }
    len = strlen(s);			/* Length of argument string */

    debug(F101,"SCREENC switch","",f);	/* Handle our function code */
    switch (f) {
      case SCR_FN:    			/* Filename */
	fsiz = -1L;			/* Invalidate previous file size */
	move(CW_PCD,22);		/* Erase percent done from last time */
	clrtoeol();
	move(CW_SIZ,22);		/* Erase file size from last time */
	clrtoeol();
	move(CW_ERR,22);		/* And last error message */
	clrtoeol();
	if (what == W_SEND) {		/* If we're sending... */
	    move(CW_NAM,13);
	    printw("Sending:");
	} else if (what == W_RECV) {	/* If we're receiving... */
	    move(CW_NAM,11);
	    printw("Receiving:");
	} else {			/* If we don't know... */
	    move(CW_NAM,11);		/* (should never see this) */
	    printw("File Name:");
	}
	move(CW_NAM,22);		/* Display the filename */
	if (len > 57) {
	    printw("%.54s..",s);
	    len = 57;
	} else printw("%s",s);
	q = len;			/* Remember name length for later */
	clrtoeol();
	scrft();			/* Display file type */
	refresh(); return;

      case SCR_AN:    			/* File as-name */
	if (q + len < 58) {		/* Will fit */
	    move(CW_NAM, 22 + q);
	    printw(" => %s",s);
	} else {			/* Too long */
	    move(CW_NAM, 22);		/* Overwrite previous name */
	    q = 0;
	    len = 54;
	    printw(" => %.51s..", s);	/* Truncate */
	}
	q += len + 4;			/* Remember horizontal position */
	clrtoeol(); refresh(); return;

      case SCR_FS: 			/* File size */
	fsiz = n;
	move(CW_SIZ,22);
	if (fsiz > -1L) printw("%ld",n);
	clrtoeol();
	scrft();			/* File type */
	refresh(); return;

      case SCR_PT:    			/* Packet type or pseudotype */
	if (spackets < 5) {
	    /* Things that won't change after the 4th packet */
	    move(CW_PAR,22); printw("%s",parnam((char)parity)); clrtoeol();
	    clrtoeol();
	    move(CW_PB, 22);		/* Block check on this packet */
	    if (bctu == 4) printw("B"); else printw("%d",bctu);
	    clrtoeol();
	}

	x = (what == W_RECV) ?		/* Packet length */
	  rpktl+1 :
	    spktl+1;
	if (x != oldlen) {		/* But only if it changed. */
	    move(CW_PL, 22);
	    printw("%d",x);
	    clrtoeol();
	    oldlen = x;
	}
	move(CW_PC, 22);		/* Packet count (always). */
	printw("%d",spackets);		/* WARNING: this can slow us way */
	clrtoeol();			/* down with short packets. */

	if (wcur != oldwin) {		/* Window slots, if changed. */
	    move(CW_WS, 22);
	    printw("%d of %d",wcur,wslotr);
	    clrtoeol();
	    oldwin = wcur;
	}
	if (retrans != oldtry) {	/* Retry count, if changed */
	    move(CW_PR, 22);
	    printw("%d",retrans);
	    clrtoeol();
	    oldtry = retrans;
	}
	if (c != oldtyp && c != 'Y' && c != 'N') { /* Sender's packet type */
	    move(CW_PT,22);
	    printw("%c",c);
	    clrtoeol();
	    oldtyp = c;
	}
	switch (c) {			/* Now handle specific packet types */
	  case 'S':			/* Beginning of transfer */
	    fcnt = fbyt = 0L;		/* Clear counters */
	    break;
	  case 'D':			/* Data packet */
	    if (fsiz > 0L) {		/* Show percent done if known */
		long s, x;
		oldpct = pct;		/* Remember previous percent */
		pct = (fsiz > 99L) ? (ffc / (fsiz / 100L)) : 0L; /* New one */
		if (pct > 100L ||	/* Allow expansion */
		    oldpct == 99L && pct < 0L) /* other boundary conditions */
		  pct = 100L;
		if (pct != oldpct) {	/* Only do this 100 times per file */
		    move(CW_PCD,22);
		    printw("%ld", pct);
		    clrtoeol();

		    /* Time remaining for this file */

		    s = (long) ((unsigned) gtimer() - fsecs); /* Secs so far */
		    if (s > 0L) {
			/*
			  Time remaining must be calculated using the smallest
			  possible quantities, to prevent overflow:
			    (seconds_so_far * percent_left) / percent_done.
			  And avoid divide_by_zero.
			*/
			x = (pct > 0L) ? ((s * (100 - pct)) / pct) : -1L;
			if (x > -1L) {
			    move(CW_TR,22);
			    printw("%s",hhmmss(x));
			    clrtoeol();
			}
		    }
		}
	    }
	    break;
	  case 'E':			/* Error packet */
#ifdef COMMENT
	    move(CW_ERR,22);		/* Print its data field */
	    if (*s) printw("%s",s);
	    clrtoeol();
#endif /* COMMENT */
	    fcnt = fbyt = 0;		/* So no bytes for this file */
	    break;
	  case 'Q':			/* Crunched packet */
	    move(CW_ERR,22);
	    printw("Damaged Packet");
	    clrtoeol();
	    break;
	  case 'T':			/* Timeout */
	    move(CW_ERR,22);
	    printw("Timeout");
	    clrtoeol();
	    break;
	  default:			/* Others, do nothing */
	    break;
	}
	refresh(); return;

      case SCR_ST:			/* File transfer status */
	move(CW_PCD,22);		/* Update percent done */
	if (c == ST_OK) {		/* OK, print 100 % */
	    pct = 100;
	    printw("100");
	} else if (fsiz > 0L)		/* Not OK, update final percent */
	  printw("%ld",( ffc * 100L ) / fsiz);
	clrtoeol();
	move(CW_MSG,22);		/* Remove any previous message */
	clrtoeol(); refresh();
	move(CW_TR, 22);
	clrtoeol(); refresh();

	switch (c) {			/* Print new status message */
	  case ST_OK:			/* Transfer OK */
	    fcnt++;			/* Count this file */
	    if (ffc > 0L)		/* For some reason ffc is off by 1 */
	      fbyt += ffc - 1L;		/* Count its bytes */
	    move(CW_MSG,22);
	    printw("Transfer OK");	/* Say Transfer was OK */
	    clrtoeol(); refresh();
	    return;

	  case ST_DISC:			/* Discarded */
	    move(CW_ERR,22); printw("File discarded");
	    clrtoeol(); refresh();
	    return;

	  case ST_INT:       		/* Interrupted */
	    move(CW_ERR,22); printw("Transfer interrupted");
	    clrtoeol(); refresh();
	    return;

	  case ST_SKIP:			/* Skipped */
	    move(CW_ERR,22); printw("File skipped");
	    clrtoeol(); refresh();
	    return;

	  case ST_ERR:			/* Error message */
	    move(CW_ERR,22); printw("%s",s);
	    clrtoeol(); refresh();
	    return;

	  case ST_REFU:			/* Refused */
	    move(CW_ERR,22);
	    if (*s)
	      printw("Refused, %s",s);
	    else printw("Refused");
	    clrtoeol(); refresh();
	    return;

	  case ST_INC:
	    move(CW_ERR,22); printw("Incomplete");
	    clrtoeol(); refresh();
	    return;

	  default:			/* Bad call */
	    move(CW_ERR,22); printw("*** screen() called with bad status ***");
	    clrtoeol(); refresh(); return;
	}

      case SCR_TC:    			/* Transaction complete */	
	move(CW_MSG,22);		/* Print statistics in message line */
	if (tsecs > 0)
	  printw("Files: %ld, Total Bytes: %ld, %ld cps",
		 fcnt, fbyt, ((fbyt * 10L) / (long) tsecs) / 10L);
	else printw("Files: %ld, Total Bytes: %ld",fcnt,fbyt);
	clrtoeol();
	move(CW_TR, 1);
	printw("       Elapsed Time: %s",hhmmss((long)tsecs));
	clrtoeol();
	move(23,0); clrtoeol();		/* Clear instructions lines */
	move(22,0); clrtoeol();		/* to make room for prompt. */
	refresh();
#ifndef VMSCURSE
	endwin();
#endif /* VMSCURSE */
	pct = 100; oldpct = 0;		/* Reset these for next time. */
	oldtyp = 0; oldwin = -1; oldtry = -1; oldlen = -1;
	cendw = 1; conoc(BEL);		/* Close window, then beep. */
	ft_win = 0;			/* Window closed. */
	return;

      case SCR_EM:			/* Error packet (fatal) */
	move (CW_ERR,22);
	printw("? %s",s);
	conoc(BEL);
	clrtoeol(); refresh(); return;

      case SCR_QE:			/* Quantity equals */
      case SCR_TU:			/* Undelimited text */
      case SCR_TN:			/* Text delimited at start */
      case SCR_TZ:			/* Text delimited at end */
	return;				/* (ignored in fullscreen display) */

      case SCR_XD:    			/* X-packet data */
	move(CW_NAM,22);
	printw("%s",s);
	clrtoeol(); refresh(); return;

      case SCR_CW:			/* Close Window */
	clrtoeol(); move(23,0); clrtoeol(); move(22,0);	clrtoeol();
	refresh();
	pct = 100; oldpct = 0;		/* Reset these for next time. */
	oldtyp = 0; oldwin = -1; oldtry = -1; oldlen = -1;

#ifndef VMSCURSE
	endwin();
#endif /* VMSCURSE */
	ft_win = 0;			/* Flag that window is closed. */
	cendw = 1; return;

      default:				/* Bad call */
	move (CW_ERR,22);
	printw("*** screen() called with bad function code ***");
	clrtoeol(); refresh(); return;
    }
}
#endif /* CK_CURSES */

#endif /* MAC */