/*
 * 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.
 * 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.
 *
 *	@(#)telnet.h	8.2 (Berkeley) 12/15/93
 * $FreeBSD: src/include/arpa/telnet.h,v 1.8 2001/12/03 12:41:18 markm Exp $
 */

/* Copied from Linux, modified for Phoenix-RTOS. */

#ifndef _ARPA_TELNET_H
#define	_ARPA_TELNET_H

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

#define	TELCMD_FIRST		xEOF
#define	TELCMD_LAST			IAC
#define	TELCMD_OK(x)		((unsigned int)(x) <= TELCMD_LAST && (unsigned int)(x) >= 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 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_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
const char *telopts[NTELOPTS + 1] = {
	"BINARY", "ECHO", "RCP", "SUPPRESS GO AHEAD", "NAME",
	"STATUS", "TIMING MARK", "RCTE", "NAOL", "NAOP",
	"NAOCRD", "NAOHTS", "NAOHTD", "NAOFFD", "NAOVTS",
	"NAOVTD", "NAOLFD", "EXTEND ASCII", "LOGOUT", "BYTE MACRO",
	"DATA ENTRY TERMINAL", "SUPDUP", "SUPDUP OUTPUT",
	"SEND LOCATION", "TERMINAL TYPE", "END OF RECORD",
	"TACACS UID", "OUTPUT MARKING", "TTYLOC",
	"3270 REGIME", "X.3 PAD", "NAWS", "TSPEED", "LFLOW",
	"LINEMODE", "XDISPLOC", "OLD-ENVIRON", "AUTHENTICATION",
	"ENCRYPT", "NEW-ENVIRON",
	0
};

#define	TELOPT_FIRST		TELOPT_BINARY
#define	TELOPT_LAST			TELOPT_NEW_ENVIRON
#define	TELOPT_OK(x)		((unsigned int)(x) <= 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 SLC_MCL         19
#define SLC_MCR         20
#define SLC_MCWL        21
#define SLC_MCWR        22
#define SLC_MCBOL       23
#define SLC_MCEOL       24
#define SLC_INSRT       25
#define SLC_OVER        26
#define SLC_ECR         27
#define SLC_EWR         28
#define SLC_EBOL        29
#define SLC_EEOL        30

#define	NSLC			30

/*
 * For backwards compatibility, we define SLC_NAMES to be the
 * list of names if SLC_NAMES is not defined.
 */
#define	SLC_NAMELIST	"0", "SYNCH", "BRK", "IP", "AO", "AYT", "EOR",	\
						"ABORT", "EOF", "SUSP", "EC", "EL", "EW", "RP",	\
						"LNEXT", "XON", "XOFF", "FORW1", "FORW2",	\
						"MCL", "MCR", "MCWL", "MCWR", "MCBOL",		\
						"MCEOL", "INSRT", "OVER", "ECR", "EWR",		\
						"EBOL", "EEOL",					\
						0

#ifdef	SLC_NAMES
const char *slc_names[] = {
	SLC_NAMELIST
};
#else
extern char *slc_names[];
#define	SLC_NAMES		SLC_NAMELIST
#endif

#define	SLC_NAME_OK(x)	((unsigned int)(x) <= 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_SRA			6
#define	AUTHTYPE_CNT			7

#define	AUTHTYPE_TEST			99

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

#define	AUTHTYPE_NAME_OK(x)		((unsigned int)(x) < 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 end 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
const char *encrypt_names[] = {
	"IS", "SUPPORT", "REPLY", "START", "END",
	"REQUEST-START", "REQUEST-END", "ENC-KEYID", "DEC-KEYID",
	0
};

const char *enctype_names[] = {
	"ANY", "DES_CFB64", "DES_OFB64",
	0
};
#else
extern char *encrypt_names[];
extern char *enctype_names[];
#endif


#define	ENCRYPT_NAME_OK(x)		((unsigned int)(x) < ENCRYPT_CNT)
#define	ENCRYPT_NAME(x)			encrypt_names[x]

#define	ENCTYPE_NAME_OK(x)		((unsigned int)(x) < ENCTYPE_CNT)
#define	ENCTYPE_NAME(x)			enctype_names[x]

#endif
