text: /*
   * 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	8.2 (Berkeley) 12/15/93
   * $FreeBSD: src/crypto/telnet/telnetd/ext.h,v 1.2.8.4 2002/04/13 10:59:08 markm Exp $
   * $DragonFly: src/crypto/telnet/telnetd/ext.h,v 1.3 2006/01/17 23:50:35 dillon Exp $
   */
  
  /*
   * 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 */
  extern int	lmodetype;	/* Client support for linemode */
  #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 */
  #ifdef	AUTHENTICATION
  extern int	auth_level;
  #endif
  
  extern slcfun	slctab[NSLC + 1];	/* slc mapping table */
  
  #define TERMINAL_TYPE_SIZE	41	/* allocated space for terminaltype */
  
  char	*terminaltype;
  
  /*
   * I/O data buffers, pointers, and counters.
   */
  extern char	ptyobuf[BUFSIZ+NETSLOP], *pfrontp, *pbackp;
  
  extern char	netibuf[BUFSIZ], *netip;
  
  extern char	netobuf[BUFSIZ], *nfrontp, *nbackp;
  extern char	*neturg;		/* one past last bye of urgent data */
  
  extern int	pcc, ncc;
  
  extern int	pty, net;
  extern char	line[16];
  extern int	SYNCHing;		/* we are in TELNET SYNCH mode */
  
  extern void
  	_termstat(void),
  	add_slc(char, char, cc_t),
  	check_slc(void),
  	change_slc(char, char, cc_t),
  	cleanup(int),
  	clientstat(int, int, int),
  	copy_termbuf(char *, size_t),
  	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(const char *, int),
  	printdata(const char *, char *, int),
  	printsub(char, unsigned char *, int),
  #endif
  	process_slc(unsigned char, unsigned char, cc_t),
  	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),
  #ifdef	AUTHENTICATION
  	start_slave(char *),
  #else
  	start_slave(char *, int, char *),
  #endif
  	suboption(void),
  	telrcv(void),
  	ttloop(void),
  	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);
  
  int	output_data(const char *, ...) __printflike(1, 2);
  void	output_datalen(const char *, int);
  void	startslave(char *, int, char *);
  
  #ifdef	ENCRYPTION
  extern void	(*encrypt_output)(unsigned char *, int);
  extern int	(*decrypt_input)(int);
  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;
  
  #ifndef	DEFAULT_IM
  #   ifdef ultrix
  #    define DEFAULT_IM	"\r\n\r\nULTRIX (%h) (%t)\r\n\r\r\n\r"
  #   else
  #    if defined(__DragonFly__)
  #     define DEFAULT_IM  "\r\n\r\nDragonFly (%h) (%t)\r\n\r\r\n\r"
  #    elif defined(__FreeBSD__)
  #     define DEFAULT_IM  "\r\n\r\nFreeBSD (%h) (%t)\r\n\r\r\n\r"
  #    else
  #    define DEFAULT_IM	"\r\n\r\n4.4 BSD UNIX (%h) (%t)\r\n\r\r\n\r"
  #    endif
  #   endif
  #endif
  