<h2>Editing: telnet.h</h2>
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 * Copyright (c) 1983, 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.
 * 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.
 *
 *	@(#)telnet.h	8.2 (Berkeley) 12/15/93
 */

#ifndef _ARPA_TELNET_H
#define	_ARPA_TELNET_H 1

/*
 * Definitions for the TELNET protocol.
 */
#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	ABORT	238		/* Abort process */
#define	SUSP	237		/* Suspend process */
#define	xEOF	236		/* End of file: EOF is already used... */

#define SYNCH	242		/* for telfunc calls */

#ifdef TELCMDS
char *telcmds[] = {
	&quot;EOF&quot;, &quot;SUSP&quot;, &quot;ABORT&quot;, &quot;EOR&quot;,
	&quot;SE&quot;, &quot;NOP&quot;, &quot;DMARK&quot;, &quot;BRK&quot;, &quot;IP&quot;, &quot;AO&quot;, &quot;AYT&quot;, &quot;EC&quot;,
	&quot;EL&quot;, &quot;GA&quot;, &quot;SB&quot;, &quot;WILL&quot;, &quot;WONT&quot;, &quot;DO&quot;, &quot;DONT&quot;, &quot;IAC&quot;, 0,
};
#else
extern char *telcmds[];
#endif

#define	TELCMD_FIRST	xEOF
#define	TELCMD_LAST	IAC
#define	TELCMD_OK(x)	((unsigned int)(x) &lt;= TELCMD_LAST &amp;&amp; \
			 (unsigned int)(x) &gt;= TELCMD_FIRST)
#define	TELCMD(x)	telcmds[(x)-TELCMD_FIRST]

/* 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 ascii 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_TUID	26	/* TACACS user identification */
#define	TELOPT_OUTMRK	27	/* output marking */
#define	TELOPT_TTYLOC	28	/* terminal location number */
#define	TELOPT_3270REGIME 29	/* 3270 regime */
#define	TELOPT_X3PAD	30	/* X.3 PAD */
#define	TELOPT_NAWS	31	/* window size */
#define	TELOPT_TSPEED	32	/* terminal speed */
#define	TELOPT_LFLOW	33	/* remote flow control */
#define TELOPT_LINEMODE	34	/* Linemode option */
#define TELOPT_XDISPLOC	35	/* X Display Location */
#define TELOPT_OLD_ENVIRON 36	/* Old - Environment variables */
#define	TELOPT_AUTHENTICATION 37/* Authenticate */
#define	TELOPT_ENCRYPT	38	/* Encryption option */
#define TELOPT_NEW_ENVIRON 39	/* New - Environment variables */
#define	TELOPT_EXOPL	255	/* extended-options-list */


#define	NTELOPTS	(1+TELOPT_NEW_ENVIRON)
#ifdef TELOPTS
char *telopts[NTELOPTS+1] = {
	&quot;BINARY&quot;, &quot;ECHO&quot;, &quot;RCP&quot;, &quot;SUPPRESS GO AHEAD&quot;, &quot;NAME&quot;,
	&quot;STATUS&quot;, &quot;TIMING MARK&quot;, &quot;RCTE&quot;, &quot;NAOL&quot;, &quot;NAOP&quot;,
	&quot;NAOCRD&quot;, &quot;NAOHTS&quot;, &quot;NAOHTD&quot;, &quot;NAOFFD&quot;, &quot;NAOVTS&quot;,
	&quot;NAOVTD&quot;, &quot;NAOLFD&quot;, &quot;EXTEND ASCII&quot;, &quot;LOGOUT&quot;, &quot;BYTE MACRO&quot;,
	&quot;DATA ENTRY TERMINAL&quot;, &quot;SUPDUP&quot;, &quot;SUPDUP OUTPUT&quot;,
	&quot;SEND LOCATION&quot;, &quot;TERMINAL TYPE&quot;, &quot;END OF RECORD&quot;,
	&quot;TACACS UID&quot;, &quot;OUTPUT MARKING&quot;, &quot;TTYLOC&quot;,
	&quot;3270 REGIME&quot;, &quot;X.3 PAD&quot;, &quot;NAWS&quot;, &quot;TSPEED&quot;, &quot;LFLOW&quot;,
	&quot;LINEMODE&quot;, &quot;XDISPLOC&quot;, &quot;OLD-ENVIRON&quot;, &quot;AUTHENTICATION&quot;,
	&quot;ENCRYPT&quot;, &quot;NEW-ENVIRON&quot;,
	0,
};
#define	TELOPT_FIRST	TELOPT_BINARY
#define	TELOPT_LAST	TELOPT_NEW_ENVIRON
#define	TELOPT_OK(x)	((unsigned int)(x) &lt;= TELOPT_LAST)
#define	TELOPT(x)	telopts[(x)-TELOPT_FIRST]
#endif

/* sub-option qualifiers */
#define	TELQUAL_IS	0	/* option is... */
#define	TELQUAL_SEND	1	/* send option */
#define	TELQUAL_INFO	2	/* ENVIRON: informational version of IS */
#define	TELQUAL_REPLY	2	/* AUTHENTICATION: client version of IS */
#define	TELQUAL_NAME	3	/* AUTHENTICATION: client version of IS */

#define	LFLOW_OFF		0	/* Disable remote flow control */
#define	LFLOW_ON		1	/* Enable remote flow control */
#define	LFLOW_RESTART_ANY	2	/* Restart output on any char */
#define	LFLOW_RESTART_XON	3	/* Restart output only on XON */

/*
 * LINEMODE suboptions
 */

#define	LM_MODE		1
#define	LM_FORWARDMASK	2
#define	LM_SLC		3

#define	MODE_EDIT	0x01
#define	MODE_TRAPSIG	0x02
#define	MODE_ACK	0x04
#define MODE_SOFT_TAB	0x08
#define MODE_LIT_ECHO	0x10

#define	MODE_MASK	0x1f

/* Not part of protocol, but needed to simplify things... */
#define MODE_FLOW		0x0100
#define MODE_ECHO		0x0200
#define MODE_INBIN		0x0400
#define MODE_OUTBIN		0x0800
#define MODE_FORCE		0x1000

#define	SLC_SYNCH	1
#define	SLC_BRK		2
#define	SLC_IP		3
#define	SLC_AO		4
#define	SLC_AYT		5
#define	SLC_EOR		6
#define	SLC_ABORT	7
#define	SLC_EOF		8
#define	SLC_SUSP	9
#define	SLC_EC		10
#define	SLC_EL		11
#define	SLC_EW		12
#define	SLC_RP		13
#define	SLC_LNEXT	14
#define	SLC_XON		15
#define	SLC_XOFF	16
#define	SLC_FORW1	17
#define	SLC_FORW2	18

#define	NSLC		18

/*
 * For backwards compatibility, we define SLC_NAMES to be the
 * list of names if SLC_NAMES is not defined.
 */
#define	SLC_NAMELIST	&quot;0&quot;, &quot;SYNCH&quot;, &quot;BRK&quot;, &quot;IP&quot;, &quot;AO&quot;, &quot;AYT&quot;, &quot;EOR&quot;, \
			&quot;ABORT&quot;, &quot;EOF&quot;, &quot;SUSP&quot;, &quot;EC&quot;, &quot;EL&quot;, &quot;EW&quot;, &quot;RP&quot;, \
			&quot;LNEXT&quot;, &quot;XON&quot;, &quot;XOFF&quot;, &quot;FORW1&quot;, &quot;FORW2&quot;, 0,
#ifdef	SLC_NAMES
char *slc_names[] = {
	SLC_NAMELIST
};
#else
extern char *slc_names[];
#define	SLC_NAMES SLC_NAMELIST
#endif

#define	SLC_NAME_OK(x)	((unsigned int)(x) &lt;= NSLC)
#define SLC_NAME(x)	slc_names[x]

#define	SLC_NOSUPPORT	0
#define	SLC_CANTCHANGE	1
#define	SLC_VARIABLE	2
#define	SLC_DEFAULT	3
#define	SLC_LEVELBITS	0x03

#define	SLC_FUNC	0
#define	SLC_FLAGS	1
#define	SLC_VALUE	2

#define	SLC_ACK		0x80
#define	SLC_FLUSHIN	0x40
#define	SLC_FLUSHOUT	0x20

#define	OLD_ENV_VAR	1
#define	OLD_ENV_VALUE	0
#define	NEW_ENV_VAR	0
#define	NEW_ENV_VALUE	1
#define	ENV_ESC		2
#define ENV_USERVAR	3

/*
 * AUTHENTICATION suboptions
 */

/*
 * Who is authenticating who ...
 */
#define	AUTH_WHO_CLIENT		0	/* Client authenticating server */
#define	AUTH_WHO_SERVER		1	/* Server authenticating client */
#define	AUTH_WHO_MASK		1

/*
 * amount of authentication done
 */
#define	AUTH_HOW_ONE_WAY	0
#define	AUTH_HOW_MUTUAL		2
#define	AUTH_HOW_MASK		2

#define	AUTHTYPE_NULL		0
#define	AUTHTYPE_KERBEROS_V4	1
#define	AUTHTYPE_KERBEROS_V5	2
#define	AUTHTYPE_SPX		3
#define	AUTHTYPE_MINK		4
#define	AUTHTYPE_CNT		5

#define	AUTHTYPE_TEST		99

#ifdef	AUTH_NAMES
char *authtype_names[] = {
	&quot;NULL&quot;, &quot;KERBEROS_V4&quot;, &quot;KERBEROS_V5&quot;, &quot;SPX&quot;, &quot;MINK&quot;, 0,
};
#else
extern char *authtype_names[];
#endif

#define	AUTHTYPE_NAME_OK(x)	((unsigned int)(x) &lt; AUTHTYPE_CNT)
#define	AUTHTYPE_NAME(x)	authtype_names[x]

/*
 * ENCRYPTion suboptions
 */
#define	ENCRYPT_IS		0	/* I pick encryption type ... */
#define	ENCRYPT_SUPPORT		1	/* I support encryption types ... */
#define	ENCRYPT_REPLY		2	/* Initial setup response */
#define	ENCRYPT_START		3	/* Am starting to send encrypted */
#define	ENCRYPT_END		4	/* Am ending encrypted */
#define	ENCRYPT_REQSTART	5	/* Request you start encrypting */
#define	ENCRYPT_REQEND		6	/* Request you send encrypting */
#define	ENCRYPT_ENC_KEYID	7
#define	ENCRYPT_DEC_KEYID	8
#define	ENCRYPT_CNT		9

#define	ENCTYPE_ANY		0
#define	ENCTYPE_DES_CFB64	1
#define	ENCTYPE_DES_OFB64	2
#define	ENCTYPE_CNT		3

#ifdef	ENCRYPT_NAMES
char *encrypt_names[] = {
	&quot;IS&quot;, &quot;SUPPORT&quot;, &quot;REPLY&quot;, &quot;START&quot;, &quot;END&quot;,
	&quot;REQUEST-START&quot;, &quot;REQUEST-END&quot;, &quot;ENC-KEYID&quot;, &quot;DEC-KEYID&quot;,
	0,
};
char *enctype_names[] = {
	&quot;ANY&quot;, &quot;DES_CFB64&quot;,  &quot;DES_OFB64&quot;,  0,
};
#else
extern char *encrypt_names[];
extern char *enctype_names[];
#endif


#define	ENCRYPT_NAME_OK(x)	((unsigned int)(x) &lt; ENCRYPT_CNT)
#define	ENCRYPT_NAME(x)		encrypt_names[x]

#define	ENCTYPE_NAME_OK(x)	((unsigned int)(x) &lt; ENCTYPE_CNT)
#define	ENCTYPE_NAME(x)		enctype_names[x]

#endif /* arpa/telnet.h */
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