/*	@(#)telnet.h 1.7 88/08/19 SMI; from UCB 5.1 5/30/85	*/
/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

/*
 * Definitions for the TELNET protocol.
 */

#ifndef _arpa_telnet_h
#define _arpa_telnet_h

#define	IAC	255		/* interpret as command: */
#define	DONT	254		/* you are not to use option */
#define	DO	253		/* please, you use option */
#define	WONT	252		/* I won't use option */
#define	WILL	251		/* I will use option */
#define	SB	250		/* interpret as subnegotiation */
#define	GA	249		/* you may reverse the line */
#define	EL	248		/* erase the current line */
#define	EC	247		/* erase the current character */
#define	AYT	246		/* are you there */
#define	AO	245		/* abort output--but let prog finish */
#define	IP	244		/* interrupt process--permanently */
#define	BREAK	243		/* break */
#define	DM	242		/* data mark--for connect. cleaning */
#define	NOP	241		/* nop */
#define	SE	240		/* end sub negotiation */
#define EOR     239             /* end of record (transparent mode) */

#define SYNCH	242		/* for telfunc calls */

#ifdef TELCMDS
static string *telcmds = "/obj/d/share"->get_telcmds();
#endif

/* telnet options */
#define TELOPT_BINARY	0	/* 8-bit data path */
#define TELOPT_ECHO	1	/* echo */
#define	TELOPT_RCP	2	/* prepare to reconnect */
#define	TELOPT_SGA	3	/* suppress go ahead */
#define	TELOPT_NAMS	4	/* approximate message size */
#define	TELOPT_STATUS	5	/* give status */
#define	TELOPT_TM	6	/* timing mark */
#define	TELOPT_RCTE	7	/* remote controlled transmission and echo */
#define TELOPT_NAOL 	8	/* negotiate about output line width */
#define TELOPT_NAOP 	9	/* negotiate about output page size */
#define TELOPT_NAOCRD	10	/* negotiate about CR disposition */
#define TELOPT_NAOHTS	11	/* negotiate about horizontal tabstops */
#define TELOPT_NAOHTD	12	/* negotiate about horizontal tab disposition */
#define TELOPT_NAOFFD	13	/* negotiate about formfeed disposition */
#define TELOPT_NAOVTS	14	/* negotiate about vertical tab stops */
#define TELOPT_NAOVTD	15	/* negotiate about vertical tab disposition */
#define TELOPT_NAOLFD	16	/* negotiate about output LF disposition */
#define TELOPT_XASCII	17	/* extended ascic character set */
#define	TELOPT_LOGOUT	18	/* force logout */
#define	TELOPT_BM	19	/* byte macro */
#define	TELOPT_DET	20	/* data entry terminal */
#define	TELOPT_SUPDUP	21	/* supdup protocol */
#define	TELOPT_SUPDUPOUTPUT 22	/* supdup output */
#define	TELOPT_SNDLOC	23	/* send location */
#define	TELOPT_TTYPE	24	/* terminal type */
#define	TELOPT_EOR	25	/* end or record */
#define TELOPT_EXOPL	255	/* extended-options-list */

#ifdef TELOPTS
#define	NTELOPTS	(1+TELOPT_EOR)
static string *telopts="/obj/d/share"->get_telopts();
#endif

/* sub-option qualifiers */
#define	TELQUAL_IS	0	/* option is... */
#define	TELQUAL_SEND	1	/* send option */

#define LOCAL_ECHO_OFF sprintf("%c%c%c",IAC,WILL,TELOPT_ECHO)
#define LOCAL_ECHO_ON sprintf("%c%c%c",IAC,WONT,TELOPT_ECHO)

#endif /*!_arpa_telnet_h*/