/*
 * Copyright (c) 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)ext.h	8.1 (Berkeley) 6/4/93
 */

/*
 * Telnet server variable declarations
 */
extern char	options[256];
extern char	do_dont_resp[256];
extern char	will_wont_resp[256];
extern int	linemode;	/* linemode on/off */
#ifdef	LINEMODE
extern int	uselinemode;	/* what linemode to use (on/off) */
extern int	editmode;	/* edit modes in use */
extern int	useeditmode;	/* edit modes to use */
extern int	alwayslinemode;	/* command line option */
# ifdef	KLUDGELINEMODE
extern int	lmodetype;	/* Client support for linemode */
# endif	/* KLUDGELINEMODE */
#endif	/* LINEMODE */
extern int	flowmode;	/* current flow control state */
extern int	restartany;	/* restart output on any character state */
#ifdef DIAGNOSTICS
extern int	diagnostic;	/* telnet diagnostic capabilities */
#endif /* DIAGNOSTICS */
#ifdef BFTPDAEMON
extern int	bftpd;		/* behave as bftp daemon */
#endif /* BFTPDAEMON */
#if	defined(SecurID)
extern int	require_SecurID;
#endif
#if	defined(AUTHENTICATION)
extern int	auth_level;
#endif
extern int auth_negotiated; /* Have we finished all authentication negotiation we plan to finish?*/
extern slcfun	slctab[NSLC + 1];	/* slc mapping table */

extern char	terminaltype[41];

/*
 * I/O data buffers, pointers, and counters.
 */
extern char	ptyobuf[BUFSIZ+NETSLOP], *pfrontp, *pbackp;

extern char	netibuf[BUFSIZ], *netip;

extern char	netobuf[BUFSIZ+NETSLOP], *nfrontp, *nbackp;
extern char	*neturg;		/* one past last bye of urgent data */

extern int	pcc, ncc;

#if defined(CRAY2) && defined(UNICOS5)
extern int unpcc;  /* characters left unprocessed by CRAY-2 terminal routine */
extern char *unptyip;  /* pointer to remaining characters in buffer */
#endif

extern int	pty, net;
extern int	SYNCHing;		/* we are in TELNET SYNCH mode */

#ifdef ENCRYPTION
extern int	must_encrypt;
#endif

extern void
	_termstat (void),
	add_slc (int, int, int),
	check_slc (void),
	change_slc (int, int, int),
	cleanup (int),
	clientstat (int, int, int),
	copy_termbuf (char *, int),
	deferslc (void),
	defer_terminit (void),
	do_opt_slc (unsigned char *, int),
	doeof (void),
	dooption (int),
	dontoption (int),
	edithost (char *, char *),
	fatal (int, const char *),
	fatalperror (int, const char *),
	get_slc_defaults (void),
	init_env (void),
	init_termbuf (void),
	interrupt (void),
	localstat (void),
	flowstat (void),
	netclear (void),
	netflush (void),
#ifdef DIAGNOSTICS
	printoption (char *, int),
	printdata (char *, char *, int),
	printsub (int, unsigned char *, int),
#endif
	ptyflush (void),
	putchr (int),
	putf (char *, char *),
	recv_ayt (void),
	send_do (int, int),
	send_dont (int, int),
	send_slc (void),
	send_status (void),
	send_will (int, int),
	send_wont (int, int),
	sendbrk (void),
	sendsusp (void),
	set_termbuf (void),
	start_login (char *, int, char *),
	start_slc (int),
	startslave (char *, int, char *),
	suboption (void),
	telrcv (void),
	ttloop (void),
#if	defined(AUTHENTICATION)
        ttsuck (void),
#endif
	tty_binaryin (int),
	tty_binaryout (int);

extern int
	end_slc (unsigned char **),
	getnpty (void),
#ifndef convex
	getpty (int *),
#endif
	login_tty (int),
	spcset (int, cc_t *, cc_t **),
	stilloob (int),
	terminit (void),
	termstat (void),
	tty_flowmode (void),
	tty_restartany (void),
	tty_isbinaryin (void),
	tty_isbinaryout (void),
	tty_iscrnl (void),
	tty_isecho (void),
	tty_isediting (void),
	tty_islitecho (void),
	tty_isnewmap (void),
	tty_israw (void),
	tty_issofttab (void),
	tty_istrapsig (void),
	tty_linemode (void);

extern void
	tty_rspeed (int),
	tty_setecho (int),
	tty_setedit (int),
	tty_setlinemode (int),
	tty_setlitecho (int),
	tty_setsig (int),
	tty_setsofttab (int),
	tty_tspeed (int),
	willoption (int),
	wontoption (int);

extern void netprintf (const char *, ...);
extern void netprintf_urg (const char *fmt, ...);
extern void netprintf_noflush (const char *fmt, ...);
extern int netwrite (const unsigned char *, size_t);
extern void netputs (const char *);

#ifdef	ENCRYPTION
extern char	*nclearto;
#endif	/* ENCRYPTION */


/*
 * The following are some clocks used to decide how to interpret
 * the relationship between various variables.
 */

extern struct {
    int
	system,			/* what the current time is */
	echotoggle,		/* last time user entered echo character */
	modenegotiated,		/* last time operating mode negotiated */
	didnetreceive,		/* last time we read data from network */
	ttypesubopt,		/* ttype subopt is received */
	tspeedsubopt,		/* tspeed subopt is received */
	environsubopt,		/* environ subopt is received */
	oenvironsubopt,		/* old environ subopt is received */
	xdisplocsubopt,		/* xdisploc subopt is received */
	baseline,		/* time started to do timed action */
	gotDM;			/* when did we last see a data mark */
} clocks;


#if	defined(CRAY2) && defined(UNICOS5)
extern int	needtermstat;
#endif

#ifdef NEED_UNSETENV_PROTO
extern void unsetenv(const char *);
#endif
#ifdef NEED_SETENV_PROTO
extern void setenv(const char *, const char *, int);
#endif
