summaryrefslogtreecommitdiff
path: root/libexec/telnetd/defs.h
blob: eb40d0354727e39be318fde3955394f31608bff2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
/*	$OpenBSD: defs.h,v 1.4 1998/05/08 19:47:05 deraadt Exp $	*/
/*	$NetBSD: defs.h,v 1.6 1996/02/28 20:38:10 thorpej Exp $	*/

/*
 * 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.
 *
 *	from: @(#)defs.h	8.1 (Berkeley) 6/4/93
 */

/*
 * Telnet server defines
 */
#include <sys/types.h>
#include <sys/param.h>

#ifndef	BSD
# define	BSD 43
#endif

#if defined(PRINTOPTIONS) && defined(DIAGNOSTICS)
#define TELOPTS
#define TELCMDS
#define	SLC_NAMES
#endif

#include <sys/socket.h>
#include <sys/wait.h>
#include <fcntl.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/ioctl.h>

#include <netinet/in.h>

#include <arpa/telnet.h>

#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <errno.h>
#include <netdb.h>
#include <syslog.h>
#ifndef	LOG_DAEMON
#define	LOG_DAEMON	0
#endif
#ifndef	LOG_ODELAY
#define	LOG_ODELAY	0
#endif
#include <ctype.h>
#include <string.h>

#ifndef	USE_TERMIO
#include <sgtty.h>
#else
# ifdef	SYSV_TERMIO
# include <termio.h>
# else
# include <termios.h>
# endif
#endif
#if !defined(USE_TERMIO) || defined(NO_CC_T)
typedef unsigned char cc_t;
#endif
#include <unistd.h>

#if	!defined(TIOCSCTTY) && defined(TCSETCTTY)
# define	TIOCSCTTY TCSETCTTY
#endif

#ifndef TIOCPKT_FLUSHWRITE
#define TIOCPKT_FLUSHWRITE      0x02
#endif

#ifndef TIOCPKT_NOSTOP
#define TIOCPKT_NOSTOP  0x10
#endif

#ifndef TIOCPKT_DOSTOP
#define TIOCPKT_DOSTOP  0x20
#endif

/*
 * I/O data buffers defines
 */
#define	NETSLOP	4096
#ifdef CRAY
#undef BUFSIZ
#define BUFSIZ  2048
#endif

#define	NIACCUM(c)	{   *netip++ = c; \
			    ncc++; \
			}

/* clock manipulations */
#define	settimer(x)	(clocks.x = ++clocks.system)
#define	sequenceIs(x,y)	(clocks.x < clocks.y)

/*
 * Linemode support states, in decreasing order of importance
 */
#define REAL_LINEMODE	0x04
#define KLUDGE_OK	0x03
#define	NO_AUTOKLUDGE	0x02
#define KLUDGE_LINEMODE	0x01
#define NO_LINEMODE	0x00

/*
 * Structures of information for each special character function.
 */
typedef struct {
	unsigned char	flag;		/* the flags for this function */
	cc_t		val;		/* the value of the special character */
} slcent, *Slcent;

typedef struct {
	slcent		defset;		/* the default settings */
	slcent		current;	/* the current settings */
	cc_t		*sptr;		/* a pointer to the char in */
					/* system data structures */
} slcfun, *Slcfun;

#ifdef DIAGNOSTICS
/*
 * Diagnostics capabilities
 */
#define	TD_REPORT	0x01	/* Report operations to client */
#define TD_EXERCISE	0x02	/* Exercise client's implementation */
#define TD_NETDATA	0x04	/* Display received data stream */
#define TD_PTYDATA	0x08	/* Display data passed to pty */
#define	TD_OPTIONS	0x10	/* Report just telnet options */
#endif /* DIAGNOSTICS */

/*
 * We keep track of each side of the option negotiation.
 */

#define	MY_STATE_WILL		0x01
#define	MY_WANT_STATE_WILL	0x02
#define	MY_STATE_DO		0x04
#define	MY_WANT_STATE_DO	0x08

/*
 * Macros to check the current state of things
 */

#define	my_state_is_do(opt)		(options[opt]&MY_STATE_DO)
#define	my_state_is_will(opt)		(options[opt]&MY_STATE_WILL)
#define my_want_state_is_do(opt)	(options[opt]&MY_WANT_STATE_DO)
#define my_want_state_is_will(opt)	(options[opt]&MY_WANT_STATE_WILL)

#define	my_state_is_dont(opt)		(!my_state_is_do(opt))
#define	my_state_is_wont(opt)		(!my_state_is_will(opt))
#define my_want_state_is_dont(opt)	(!my_want_state_is_do(opt))
#define my_want_state_is_wont(opt)	(!my_want_state_is_will(opt))

#define	set_my_state_do(opt)		(options[opt] |= MY_STATE_DO)
#define	set_my_state_will(opt)		(options[opt] |= MY_STATE_WILL)
#define	set_my_want_state_do(opt)	(options[opt] |= MY_WANT_STATE_DO)
#define	set_my_want_state_will(opt)	(options[opt] |= MY_WANT_STATE_WILL)

#define	set_my_state_dont(opt)		(options[opt] &= ~MY_STATE_DO)
#define	set_my_state_wont(opt)		(options[opt] &= ~MY_STATE_WILL)
#define	set_my_want_state_dont(opt)	(options[opt] &= ~MY_WANT_STATE_DO)
#define	set_my_want_state_wont(opt)	(options[opt] &= ~MY_WANT_STATE_WILL)

/*
 * Tricky code here.  What we want to know is if the MY_STATE_WILL
 * and MY_WANT_STATE_WILL bits have the same value.  Since the two
 * bits are adjacent, a little arithmatic will show that by adding
 * in the lower bit, the upper bit will be set if the two bits were
 * different, and clear if they were the same.
 */
#define my_will_wont_is_changing(opt) \
			((options[opt]+MY_STATE_WILL) & MY_WANT_STATE_WILL)

#define my_do_dont_is_changing(opt) \
			((options[opt]+MY_STATE_DO) & MY_WANT_STATE_DO)

/*
 * Make everything symetrical
 */

#define	HIS_STATE_WILL			MY_STATE_DO
#define	HIS_WANT_STATE_WILL		MY_WANT_STATE_DO
#define HIS_STATE_DO			MY_STATE_WILL
#define HIS_WANT_STATE_DO		MY_WANT_STATE_WILL

#define	his_state_is_do			my_state_is_will
#define	his_state_is_will		my_state_is_do
#define his_want_state_is_do		my_want_state_is_will
#define his_want_state_is_will		my_want_state_is_do

#define	his_state_is_dont		my_state_is_wont
#define	his_state_is_wont		my_state_is_dont
#define his_want_state_is_dont		my_want_state_is_wont
#define his_want_state_is_wont		my_want_state_is_dont

#define	set_his_state_do		set_my_state_will
#define	set_his_state_will		set_my_state_do
#define	set_his_want_state_do		set_my_want_state_will
#define	set_his_want_state_will		set_my_want_state_do

#define	set_his_state_dont		set_my_state_wont
#define	set_his_state_wont		set_my_state_dont
#define	set_his_want_state_dont		set_my_want_state_wont
#define	set_his_want_state_wont		set_my_want_state_dont

#define his_will_wont_is_changing	my_do_dont_is_changing
#define his_do_dont_is_changing		my_will_wont_is_changing