1/*
2 * Copyright (c) 1989, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 *	@(#)ext.h	8.2 (Berkeley) 12/15/93
30 * $FreeBSD$
31 */
32
33#ifndef EXTERN
34#define	EXTERN	extern
35#endif
36
37/*
38 * Telnet server variable declarations
39 */
40EXTERN char	options[256];
41EXTERN char	do_dont_resp[256];
42EXTERN char	will_wont_resp[256];
43EXTERN int	linemode;	/* linemode on/off */
44#ifdef	LINEMODE
45EXTERN int	uselinemode;	/* what linemode to use (on/off) */
46EXTERN int	editmode;	/* edit modes in use */
47EXTERN int	useeditmode;	/* edit modes to use */
48EXTERN int	alwayslinemode;	/* command line option */
49EXTERN int	lmodetype;	/* Client support for linemode */
50#endif	/* LINEMODE */
51EXTERN int	flowmode;	/* current flow control state */
52EXTERN int	restartany;	/* restart output on any character state */
53#ifdef DIAGNOSTICS
54EXTERN int	diagnostic;	/* telnet diagnostic capabilities */
55#endif /* DIAGNOSTICS */
56#ifdef BFTPDAEMON
57EXTERN int	bftpd;		/* behave as bftp daemon */
58#endif /* BFTPDAEMON */
59#ifdef	AUTHENTICATION
60EXTERN int	auth_level;
61#endif
62
63EXTERN slcfun	slctab[NSLC + 1];	/* slc mapping table */
64
65EXTERN char	*terminaltype;
66
67/*
68 * I/O data buffers, pointers, and counters.
69 */
70EXTERN char	ptyobuf[BUFSIZ+NETSLOP], *pfrontp, *pbackp;
71
72EXTERN char	netibuf[BUFSIZ], *netip;
73
74EXTERN char	netobuf[BUFSIZ], *nfrontp, *nbackp;
75EXTERN char	*neturg;		/* one past last bye of urgent data */
76
77EXTERN int	pcc, ncc;
78
79EXTERN int	pty, net;
80EXTERN char	line[32];
81EXTERN int	SYNCHing;		/* we are in TELNET SYNCH mode */
82
83EXTERN void
84	_termstat(void),
85	add_slc(char, char, cc_t),
86	check_slc(void),
87	change_slc(char, char, cc_t),
88	cleanup(int),
89	clientstat(int, int, int),
90	copy_termbuf(char *, size_t),
91	deferslc(void),
92	defer_terminit(void),
93	do_opt_slc(unsigned char *, int),
94	doeof(void),
95	dooption(int),
96	dontoption(int),
97	edithost(char *, char *),
98	fatal(int, const char *),
99	fatalperror(int, const char *),
100	get_slc_defaults(void),
101	init_env(void),
102	init_termbuf(void),
103	interrupt(void),
104	localstat(void),
105	flowstat(void),
106	netclear(void),
107	netflush(void),
108#ifdef DIAGNOSTICS
109	printoption(const char *, int),
110	printdata(const char *, char *, int),
111	printsub(char, unsigned char *, int),
112#endif
113	process_slc(unsigned char, unsigned char, cc_t),
114	ptyflush(void),
115	putchr(int),
116	putf(char *, char *),
117	recv_ayt(void),
118	send_do(int, int),
119	send_dont(int, int),
120	send_slc(void),
121	send_status(void),
122	send_will(int, int),
123	send_wont(int, int),
124	sendbrk(void),
125	sendsusp(void),
126	set_termbuf(void),
127	start_login(char *, int, char *),
128	start_slc(int),
129#ifdef	AUTHENTICATION
130	start_slave(char *),
131#else
132	start_slave(char *, int, char *),
133#endif
134	suboption(void),
135	telrcv(void),
136	ttloop(void),
137	tty_binaryin(int),
138	tty_binaryout(int);
139
140EXTERN int
141	end_slc(unsigned char **),
142	getnpty(void),
143#ifndef convex
144	getpty(int *),
145#endif
146	login_tty(int),
147	spcset(int, cc_t *, cc_t **),
148	stilloob(int),
149	terminit(void),
150	termstat(void),
151	tty_flowmode(void),
152	tty_restartany(void),
153	tty_isbinaryin(void),
154	tty_isbinaryout(void),
155	tty_iscrnl(void),
156	tty_isecho(void),
157	tty_isediting(void),
158	tty_islitecho(void),
159	tty_isnewmap(void),
160	tty_israw(void),
161	tty_issofttab(void),
162	tty_istrapsig(void),
163	tty_linemode(void);
164
165EXTERN void
166	tty_rspeed(int),
167	tty_setecho(int),
168	tty_setedit(int),
169	tty_setlinemode(int),
170	tty_setlitecho(int),
171	tty_setsig(int),
172	tty_setsofttab(int),
173	tty_tspeed(int),
174	willoption(int),
175	wontoption(int);
176
177int	output_data(const char *, ...) __printflike(1, 2);
178void	output_datalen(const char *, int);
179void	startslave(char *, int, char *);
180
181#ifdef	ENCRYPTION
182extern void	(*encrypt_output)(unsigned char *, int);
183extern int	(*decrypt_input)(int);
184EXTERN char	*nclearto;
185#endif	/* ENCRYPTION */
186
187
188/*
189 * The following are some clocks used to decide how to interpret
190 * the relationship between various variables.
191 */
192
193EXTERN struct {
194    int
195	system,			/* what the current time is */
196	echotoggle,		/* last time user entered echo character */
197	modenegotiated,		/* last time operating mode negotiated */
198	didnetreceive,		/* last time we read data from network */
199	ttypesubopt,		/* ttype subopt is received */
200	tspeedsubopt,		/* tspeed subopt is received */
201	environsubopt,		/* environ subopt is received */
202	oenvironsubopt,		/* old environ subopt is received */
203	xdisplocsubopt,		/* xdisploc subopt is received */
204	baseline,		/* time started to do timed action */
205	gotDM;			/* when did we last see a data mark */
206} clocks;
207
208#ifndef	DEFAULT_IM
209#   ifdef ultrix
210#    define DEFAULT_IM	"\r\n\r\nULTRIX (%h) (%t)\r\n\r\r\n\r"
211#   else
212#    ifdef __FreeBSD__
213#     define DEFAULT_IM  "\r\n\r\nFreeBSD (%h) (%t)\r\n\r\r\n\r"
214#    else
215#    define DEFAULT_IM	"\r\n\r\n4.4 BSD UNIX (%h) (%t)\r\n\r\r\n\r"
216#    endif
217#   endif
218#endif
219