xref: /freebsd/include/arpa/telnet.h (revision bdd1243df58e60e85101c09001d9812a789b6bc4)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1983, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. Neither the name of the University nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  *
31  *	@(#)telnet.h	8.2 (Berkeley) 12/15/93
32  * $FreeBSD$
33  */
34 
35 #ifndef _ARPA_TELNET_H_
36 #define	_ARPA_TELNET_H_
37 
38 /*
39  * Definitions for the TELNET protocol.
40  */
41 #define	IAC	255		/* interpret as command: */
42 #define	DONT	254		/* you are not to use option */
43 #define	DO	253		/* please, you use option */
44 #define	WONT	252		/* I won't use option */
45 #define	WILL	251		/* I will use option */
46 #define	SB	250		/* interpret as subnegotiation */
47 #define	GA	249		/* you may reverse the line */
48 #define	EL	248		/* erase the current line */
49 #define	EC	247		/* erase the current character */
50 #define	AYT	246		/* are you there */
51 #define	AO	245		/* abort output--but let prog finish */
52 #define	IP	244		/* interrupt process--permanently */
53 #define	BREAK	243		/* break */
54 #define	DM	242		/* data mark--for connect. cleaning */
55 #define	NOP	241		/* nop */
56 #define	SE	240		/* end sub negotiation */
57 #define EOR     239             /* end of record (transparent mode) */
58 #define	ABORT	238		/* Abort process */
59 #define	SUSP	237		/* Suspend process */
60 #define	xEOF	236		/* End of file: EOF is already used... */
61 
62 #define SYNCH	242		/* for telfunc calls */
63 
64 #ifdef TELCMDS
65 const char *telcmds[] = {
66 	"EOF", "SUSP", "ABORT", "EOR",
67 	"SE", "NOP", "DMARK", "BRK", "IP", "AO", "AYT", "EC",
68 	"EL", "GA", "SB", "WILL", "WONT", "DO", "DONT", "IAC",
69 	0
70 };
71 #else
72 extern char *telcmds[];
73 #endif
74 
75 #define	TELCMD_FIRST	xEOF
76 #define	TELCMD_LAST	IAC
77 #define	TELCMD_OK(x)	((unsigned int)(x) <= TELCMD_LAST && \
78 			 (unsigned int)(x) >= TELCMD_FIRST)
79 #define	TELCMD(x)	telcmds[(x)-TELCMD_FIRST]
80 
81 /* telnet options */
82 #define TELOPT_BINARY	0	/* 8-bit data path */
83 #define TELOPT_ECHO	1	/* echo */
84 #define	TELOPT_RCP	2	/* prepare to reconnect */
85 #define	TELOPT_SGA	3	/* suppress go ahead */
86 #define	TELOPT_NAMS	4	/* approximate message size */
87 #define	TELOPT_STATUS	5	/* give status */
88 #define	TELOPT_TM	6	/* timing mark */
89 #define	TELOPT_RCTE	7	/* remote controlled transmission and echo */
90 #define TELOPT_NAOL 	8	/* negotiate about output line width */
91 #define TELOPT_NAOP 	9	/* negotiate about output page size */
92 #define TELOPT_NAOCRD	10	/* negotiate about CR disposition */
93 #define TELOPT_NAOHTS	11	/* negotiate about horizontal tabstops */
94 #define TELOPT_NAOHTD	12	/* negotiate about horizontal tab disposition */
95 #define TELOPT_NAOFFD	13	/* negotiate about formfeed disposition */
96 #define TELOPT_NAOVTS	14	/* negotiate about vertical tab stops */
97 #define TELOPT_NAOVTD	15	/* negotiate about vertical tab disposition */
98 #define TELOPT_NAOLFD	16	/* negotiate about output LF disposition */
99 #define TELOPT_XASCII	17	/* extended ascic character set */
100 #define	TELOPT_LOGOUT	18	/* force logout */
101 #define	TELOPT_BM	19	/* byte macro */
102 #define	TELOPT_DET	20	/* data entry terminal */
103 #define	TELOPT_SUPDUP	21	/* supdup protocol */
104 #define	TELOPT_SUPDUPOUTPUT 22	/* supdup output */
105 #define	TELOPT_SNDLOC	23	/* send location */
106 #define	TELOPT_TTYPE	24	/* terminal type */
107 #define	TELOPT_EOR	25	/* end or record */
108 #define	TELOPT_TUID	26	/* TACACS user identification */
109 #define	TELOPT_OUTMRK	27	/* output marking */
110 #define	TELOPT_TTYLOC	28	/* terminal location number */
111 #define	TELOPT_3270REGIME 29	/* 3270 regime */
112 #define	TELOPT_X3PAD	30	/* X.3 PAD */
113 #define	TELOPT_NAWS	31	/* window size */
114 #define	TELOPT_TSPEED	32	/* terminal speed */
115 #define	TELOPT_LFLOW	33	/* remote flow control */
116 #define TELOPT_LINEMODE	34	/* Linemode option */
117 #define TELOPT_XDISPLOC	35	/* X Display Location */
118 #define TELOPT_OLD_ENVIRON 36	/* Old - Environment variables */
119 #define	TELOPT_AUTHENTICATION 37/* Authenticate */
120 #define	TELOPT_ENCRYPT	38	/* Encryption option */
121 #define TELOPT_NEW_ENVIRON 39	/* New - Environment variables */
122 #define	TELOPT_TN3270E	40	/* RFC2355 - TN3270 Enhancements */
123 #define	TELOPT_CHARSET	42	/* RFC2066 - Charset */
124 #define	TELOPT_COMPORT	44	/* RFC2217 - Com Port Control */
125 #define	TELOPT_KERMIT	47	/* RFC2840 - Kermit */
126 #define	TELOPT_EXOPL	255	/* extended-options-list */
127 
128 
129 #define	NTELOPTS	(1+TELOPT_KERMIT)
130 #ifdef TELOPTS
131 const char *telopts[NTELOPTS+1] = {
132 	"BINARY", "ECHO", "RCP", "SUPPRESS GO AHEAD", "NAME",
133 	"STATUS", "TIMING MARK", "RCTE", "NAOL", "NAOP",
134 	"NAOCRD", "NAOHTS", "NAOHTD", "NAOFFD", "NAOVTS",
135 	"NAOVTD", "NAOLFD", "EXTEND ASCII", "LOGOUT", "BYTE MACRO",
136 	"DATA ENTRY TERMINAL", "SUPDUP", "SUPDUP OUTPUT",
137 	"SEND LOCATION", "TERMINAL TYPE", "END OF RECORD",
138 	"TACACS UID", "OUTPUT MARKING", "TTYLOC",
139 	"3270 REGIME", "X.3 PAD", "NAWS", "TSPEED", "LFLOW",
140 	"LINEMODE", "XDISPLOC", "OLD-ENVIRON", "AUTHENTICATION",
141 	"ENCRYPT", "NEW-ENVIRON", "TN3270E", "XAUTH", "CHARSET",
142 	"RSP", "COM-PORT", "SLE", "STARTTLS", "KERMIT",
143 	0
144 };
145 #define	TELOPT_FIRST	TELOPT_BINARY
146 #define	TELOPT_LAST	TELOPT_KERMIT
147 #define	TELOPT_OK(x)	((unsigned int)(x) <= TELOPT_LAST)
148 #define	TELOPT(x)	telopts[(x)-TELOPT_FIRST]
149 #endif
150 
151 /* sub-option qualifiers */
152 #define	TELQUAL_IS	0	/* option is... */
153 #define	TELQUAL_SEND	1	/* send option */
154 #define	TELQUAL_INFO	2	/* ENVIRON: informational version of IS */
155 #define	TELQUAL_REPLY	2	/* AUTHENTICATION: client version of IS */
156 #define	TELQUAL_NAME	3	/* AUTHENTICATION: client version of IS */
157 
158 #define	LFLOW_OFF		0	/* Disable remote flow control */
159 #define	LFLOW_ON		1	/* Enable remote flow control */
160 #define	LFLOW_RESTART_ANY	2	/* Restart output on any char */
161 #define	LFLOW_RESTART_XON	3	/* Restart output only on XON */
162 
163 /*
164  * LINEMODE suboptions
165  */
166 
167 #define	LM_MODE		1
168 #define	LM_FORWARDMASK	2
169 #define	LM_SLC		3
170 
171 #define	MODE_EDIT	0x01
172 #define	MODE_TRAPSIG	0x02
173 #define	MODE_ACK	0x04
174 #define MODE_SOFT_TAB	0x08
175 #define MODE_LIT_ECHO	0x10
176 
177 #define	MODE_MASK	0x1f
178 
179 /* Not part of protocol, but needed to simplify things... */
180 #define MODE_FLOW		0x0100
181 #define MODE_ECHO		0x0200
182 #define MODE_INBIN		0x0400
183 #define MODE_OUTBIN		0x0800
184 #define MODE_FORCE		0x1000
185 
186 #define	SLC_SYNCH	1
187 #define	SLC_BRK		2
188 #define	SLC_IP		3
189 #define	SLC_AO		4
190 #define	SLC_AYT		5
191 #define	SLC_EOR		6
192 #define	SLC_ABORT	7
193 #define	SLC_EOF		8
194 #define	SLC_SUSP	9
195 #define	SLC_EC		10
196 #define	SLC_EL		11
197 #define	SLC_EW		12
198 #define	SLC_RP		13
199 #define	SLC_LNEXT	14
200 #define	SLC_XON		15
201 #define	SLC_XOFF	16
202 #define	SLC_FORW1	17
203 #define	SLC_FORW2	18
204 #define SLC_MCL         19
205 #define SLC_MCR         20
206 #define SLC_MCWL        21
207 #define SLC_MCWR        22
208 #define SLC_MCBOL       23
209 #define SLC_MCEOL       24
210 #define SLC_INSRT       25
211 #define SLC_OVER        26
212 #define SLC_ECR         27
213 #define SLC_EWR         28
214 #define SLC_EBOL        29
215 #define SLC_EEOL        30
216 
217 #define	NSLC		30
218 
219 /*
220  * For backwards compatibility, we define SLC_NAMES to be the
221  * list of names if SLC_NAMES is not defined.
222  */
223 #define	SLC_NAMELIST	"0", "SYNCH", "BRK", "IP", "AO", "AYT", "EOR",	\
224 			"ABORT", "EOF", "SUSP", "EC", "EL", "EW", "RP",	\
225 			"LNEXT", "XON", "XOFF", "FORW1", "FORW2",	\
226 			"MCL", "MCR", "MCWL", "MCWR", "MCBOL",		\
227 			"MCEOL", "INSRT", "OVER", "ECR", "EWR",		\
228 			"EBOL", "EEOL",					\
229 			0
230 
231 #ifdef	SLC_NAMES
232 const char *slc_names[] = {
233 	SLC_NAMELIST
234 };
235 #else
236 extern char *slc_names[];
237 #define	SLC_NAMES SLC_NAMELIST
238 #endif
239 
240 #define	SLC_NAME_OK(x)	((unsigned int)(x) <= NSLC)
241 #define SLC_NAME(x)	slc_names[x]
242 
243 #define	SLC_NOSUPPORT	0
244 #define	SLC_CANTCHANGE	1
245 #define	SLC_VARIABLE	2
246 #define	SLC_DEFAULT	3
247 #define	SLC_LEVELBITS	0x03
248 
249 #define	SLC_FUNC	0
250 #define	SLC_FLAGS	1
251 #define	SLC_VALUE	2
252 
253 #define	SLC_ACK		0x80
254 #define	SLC_FLUSHIN	0x40
255 #define	SLC_FLUSHOUT	0x20
256 
257 #define	OLD_ENV_VAR	1
258 #define	OLD_ENV_VALUE	0
259 #define	NEW_ENV_VAR	0
260 #define	NEW_ENV_VALUE	1
261 #define	ENV_ESC		2
262 #define ENV_USERVAR	3
263 
264 /*
265  * AUTHENTICATION suboptions
266  */
267 
268 /*
269  * Who is authenticating who ...
270  */
271 #define	AUTH_WHO_CLIENT		0	/* Client authenticating server */
272 #define	AUTH_WHO_SERVER		1	/* Server authenticating client */
273 #define	AUTH_WHO_MASK		1
274 
275 /*
276  * amount of authentication done
277  */
278 #define	AUTH_HOW_ONE_WAY	0
279 #define	AUTH_HOW_MUTUAL		2
280 #define	AUTH_HOW_MASK		2
281 
282 #define	AUTHTYPE_NULL		0
283 #define	AUTHTYPE_KERBEROS_V4	1
284 #define	AUTHTYPE_KERBEROS_V5	2
285 #define	AUTHTYPE_SPX		3
286 #define	AUTHTYPE_MINK		4
287 #define	AUTHTYPE_SRA		6
288 #define	AUTHTYPE_CNT		7
289 
290 #define	AUTHTYPE_TEST		99
291 
292 #ifdef	AUTH_NAMES
293 const char *authtype_names[] = {
294 	"NULL", "KERBEROS_V4", "KERBEROS_V5", "SPX", "MINK", NULL, "SRA",
295 	0
296 };
297 #else
298 extern char *authtype_names[];
299 #endif
300 
301 #define	AUTHTYPE_NAME_OK(x)	((unsigned int)(x) < AUTHTYPE_CNT)
302 #define	AUTHTYPE_NAME(x)	authtype_names[x]
303 
304 /*
305  * ENCRYPTion suboptions
306  */
307 #define	ENCRYPT_IS		0	/* I pick encryption type ... */
308 #define	ENCRYPT_SUPPORT		1	/* I support encryption types ... */
309 #define	ENCRYPT_REPLY		2	/* Initial setup response */
310 #define	ENCRYPT_START		3	/* Am starting to send encrypted */
311 #define	ENCRYPT_END		4	/* Am ending encrypted */
312 #define	ENCRYPT_REQSTART	5	/* Request you start encrypting */
313 #define	ENCRYPT_REQEND		6	/* Request you end encrypting */
314 #define	ENCRYPT_ENC_KEYID	7
315 #define	ENCRYPT_DEC_KEYID	8
316 #define	ENCRYPT_CNT		9
317 
318 #define	ENCTYPE_ANY		0
319 #define	ENCTYPE_DES_CFB64	1
320 #define	ENCTYPE_DES_OFB64	2
321 #define	ENCTYPE_CNT		3
322 
323 #ifdef	ENCRYPT_NAMES
324 const char *encrypt_names[] = {
325 	"IS", "SUPPORT", "REPLY", "START", "END",
326 	"REQUEST-START", "REQUEST-END", "ENC-KEYID", "DEC-KEYID",
327 	0
328 };
329 const char *enctype_names[] = {
330 	"ANY", "DES_CFB64",  "DES_OFB64",
331 	0
332 };
333 #else
334 extern char *encrypt_names[];
335 extern char *enctype_names[];
336 #endif
337 
338 
339 #define	ENCRYPT_NAME_OK(x)	((unsigned int)(x) < ENCRYPT_CNT)
340 #define	ENCRYPT_NAME(x)		encrypt_names[x]
341 
342 #define	ENCTYPE_NAME_OK(x)	((unsigned int)(x) < ENCTYPE_CNT)
343 #define	ENCTYPE_NAME(x)		enctype_names[x]
344 
345 #endif /* !_TELNET_H_ */
346