1/*
2 * Copyright (c) 1988, 1990, 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. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *	@(#)externs.h	8.3 (Berkeley) 5/30/95
34 *	$FreeBSD: src/contrib/telnet/telnet/externs.h,v 1.11 2007/07/01 12:08:04 gnn Exp $
35 */
36
37#ifndef	BSD
38# define BSD 43
39#endif
40
41/*
42 * ucb stdio.h defines BSD as something weird
43 */
44#if defined(sun) && defined(__svr4__)
45#define BSD 43
46#endif
47
48#ifndef	USE_TERMIO
49# if BSD > 43 || defined(SYSV_TERMIO)
50#  define USE_TERMIO
51# endif
52#endif
53
54#include <stdio.h>
55#include <setjmp.h>
56#include <sys/ioctl.h>
57#include <errno.h>
58#ifdef	USE_TERMIO
59# ifndef	VINTR
60#  include <sys/termios.h>
61# endif
62# define termio termios
63#endif
64#if defined(NO_CC_T) || !defined(USE_TERMIO)
65# if !defined(USE_TERMIO)
66typedef char cc_t;
67# else
68typedef unsigned char cc_t;
69# endif
70#endif
71
72#include <string.h>
73
74#if defined(IPSEC)
75#ifdef __APPLE__
76#include <netinet6/ipsec.h>
77#else
78#include <netipsec/ipsec.h>
79#endif
80#if defined(IPSEC_POLICY_IPSEC)
81extern char *ipsec_policy_in;
82extern char *ipsec_policy_out;
83#endif
84#endif
85
86#ifndef	_POSIX_VDISABLE
87# ifdef sun
88#  include <sys/param.h>	/* pick up VDISABLE definition, mayby */
89# endif
90# ifdef VDISABLE
91#  define _POSIX_VDISABLE VDISABLE
92# else
93#  define _POSIX_VDISABLE ((cc_t)'\377')
94# endif
95#endif
96
97#define	SUBBUFSIZE	256
98
99#if	!defined(P)
100# ifdef	__STDC__
101#  define	P(x)	x
102# else
103#  define	P(x)	()
104# endif
105#endif
106
107extern int
108    autologin,		/* Autologin enabled */
109    skiprc,		/* Don't process the ~/.telnetrc file */
110    eight,		/* use eight bit mode (binary in and/or out */
111    family,		/* address family of peer */
112    flushout,		/* flush output */
113    connected,		/* Are we connected to the other side? */
114    globalmode,		/* Mode tty should be in */
115    telnetport,		/* Are we connected to the telnet port? */
116    localflow,		/* Flow control handled locally */
117    restartany,		/* If flow control, restart output on any character */
118    localchars,		/* we recognize interrupt/quit */
119    donelclchars,	/* the user has set "localchars" */
120    showoptions,
121    net,		/* Network file descriptor */
122    tin,		/* Terminal input file descriptor */
123    tout,		/* Terminal output file descriptor */
124    crlf,		/* Should '\r' be mapped to <CR><LF> (or <CR><NUL>)? */
125    autoflush,		/* flush output when interrupting? */
126    autosynch,		/* send interrupt characters with SYNCH? */
127    SYNCHing,		/* Is the stream in telnet SYNCH mode? */
128    donebinarytoggle,	/* the user has put us in binary */
129    dontlecho,		/* do we suppress local echoing right now? */
130    crmod,
131    netdata,		/* Print out network data flow */
132    prettydump,		/* Print "netdata" output in user readable format */
133    termdata,		/* Print out terminal data flow */
134    telnet_debug,	/* Debug level */
135    doaddrlookup,	/* do a reverse lookup? */
136    clienteof;		/* Client received EOF */
137
138extern cc_t escape;	/* Escape to command mode */
139extern cc_t rlogin;	/* Rlogin mode escape character */
140#ifdef	KLUDGELINEMODE
141extern cc_t echoc;	/* Toggle local echoing */
142#endif
143
144extern char
145    *prompt;		/* Prompt for command. */
146
147extern char
148    doopt[],
149    dont[],
150    will[],
151    wont[],
152    options[],		/* All the little options */
153    *hostname;		/* Who are we connected to? */
154#ifdef	ENCRYPTION
155extern void (*encrypt_output)(unsigned char *, int);
156extern int (*decrypt_input)(int);
157#endif	/* ENCRYPTION */
158
159/*
160 * We keep track of each side of the option negotiation.
161 */
162
163#define	MY_STATE_WILL		0x01
164#define	MY_WANT_STATE_WILL	0x02
165#define	MY_STATE_DO		0x04
166#define	MY_WANT_STATE_DO	0x08
167
168/*
169 * Macros to check the current state of things
170 */
171
172#define	my_state_is_do(opt)		(options[opt]&MY_STATE_DO)
173#define	my_state_is_will(opt)		(options[opt]&MY_STATE_WILL)
174#define my_want_state_is_do(opt)	(options[opt]&MY_WANT_STATE_DO)
175#define my_want_state_is_will(opt)	(options[opt]&MY_WANT_STATE_WILL)
176
177#define	my_state_is_dont(opt)		(!my_state_is_do(opt))
178#define	my_state_is_wont(opt)		(!my_state_is_will(opt))
179#define my_want_state_is_dont(opt)	(!my_want_state_is_do(opt))
180#define my_want_state_is_wont(opt)	(!my_want_state_is_will(opt))
181
182#define	set_my_state_do(opt)		{options[opt] |= MY_STATE_DO;}
183#define	set_my_state_will(opt)		{options[opt] |= MY_STATE_WILL;}
184#define	set_my_want_state_do(opt)	{options[opt] |= MY_WANT_STATE_DO;}
185#define	set_my_want_state_will(opt)	{options[opt] |= MY_WANT_STATE_WILL;}
186
187#define	set_my_state_dont(opt)		{options[opt] &= ~MY_STATE_DO;}
188#define	set_my_state_wont(opt)		{options[opt] &= ~MY_STATE_WILL;}
189#define	set_my_want_state_dont(opt)	{options[opt] &= ~MY_WANT_STATE_DO;}
190#define	set_my_want_state_wont(opt)	{options[opt] &= ~MY_WANT_STATE_WILL;}
191
192/*
193 * Make everything symetrical
194 */
195
196#define	HIS_STATE_WILL			MY_STATE_DO
197#define	HIS_WANT_STATE_WILL		MY_WANT_STATE_DO
198#define HIS_STATE_DO			MY_STATE_WILL
199#define HIS_WANT_STATE_DO		MY_WANT_STATE_WILL
200
201#define	his_state_is_do			my_state_is_will
202#define	his_state_is_will		my_state_is_do
203#define his_want_state_is_do		my_want_state_is_will
204#define his_want_state_is_will		my_want_state_is_do
205
206#define	his_state_is_dont		my_state_is_wont
207#define	his_state_is_wont		my_state_is_dont
208#define his_want_state_is_dont		my_want_state_is_wont
209#define his_want_state_is_wont		my_want_state_is_dont
210
211#define	set_his_state_do		set_my_state_will
212#define	set_his_state_will		set_my_state_do
213#define	set_his_want_state_do		set_my_want_state_will
214#define	set_his_want_state_will		set_my_want_state_do
215
216#define	set_his_state_dont		set_my_state_wont
217#define	set_his_state_wont		set_my_state_dont
218#define	set_his_want_state_dont		set_my_want_state_wont
219#define	set_his_want_state_wont		set_my_want_state_dont
220
221#if	defined(USE_TERMIO)
222#define	SIG_FUNC_RET	void
223#else
224#define	SIG_FUNC_RET	int
225#endif
226
227#ifdef	SIGINFO
228extern SIG_FUNC_RET
229    ayt_status(void);
230#endif
231
232extern FILE
233    *NetTrace;		/* Where debugging output goes */
234extern unsigned char
235    NetTraceFile[];	/* Name of file where debugging output goes */
236extern void
237    SetNetTrace(char *);	/* Function to change where debugging goes */
238
239extern jmp_buf
240    peerdied,
241    toplevel;		/* For error conditions. */
242
243extern void
244    command(int, const char *, int),
245    Dump(char, unsigned char *, int),
246    env_init(void),
247    Exit(int),
248    ExitString(const char *, int),
249    init_network(void),
250    init_sys(void),
251    init_telnet(void),
252    init_terminal(void),
253    intp(void),
254    optionstatus(void),
255    printoption(const char *, int, int),
256    printsub(char, unsigned char *, int),
257    quit(void),
258    sendabort(void),
259    sendbrk(void),
260    sendeof(void),
261    sendsusp(void),
262    sendnaws(void),
263    sendayt(void),
264    setconnmode(int),
265    setcommandmode(void),
266    set_escape_char(char *s),
267    setneturg(void),
268    sys_telnet_init(void),
269    telnet(char *),
270    tel_enter_binary(int),
271    tel_leave_binary(int),
272    TerminalFlushOutput(void),
273    TerminalNewMode(int),
274    TerminalRestoreState(void),
275    TerminalSaveState(void),
276    TerminalDefaultChars(void),
277    TerminalSpeeds(long *, long *),
278    tninit(void),
279    upcase(char *),
280    willoption(int),
281    wontoption(int);
282
283extern void
284    send_do(int, int),
285    send_dont(int, int),
286    send_will(int, int),
287    send_wont(int, int);
288
289extern void
290    lm_will(unsigned char *, int),
291    lm_wont(unsigned char *, int),
292    lm_do(unsigned char *, int),
293    lm_dont(unsigned char *, int),
294    lm_mode(unsigned char *, int, int);
295
296extern void
297    slc_init(void),
298    slcstate(void),
299    slc_mode_export(void),
300    slc_mode_import(int),
301    slc_import(int),
302    slc_export(void),
303    slc(unsigned char *, int),
304    slc_check(void),
305    slc_start_reply(void),
306    slc_add_reply(unsigned char, unsigned char, cc_t),
307    slc_end_reply(void);
308extern int
309    getconnmode(void),
310    opt_welldefined(const char *),
311    NetClose(int),
312    netflush(void),
313    process_rings(int, int, int, int, int, int),
314    rlogin_susp(void),
315    SetSockOpt(int, int, int, int),
316    slc_update(void),
317    stilloob(void),
318    telrcv(void),
319    TerminalRead(char *, int),
320    TerminalWrite(char *, int),
321    TerminalAutoFlush(void),
322    TerminalWindowSize(long *, long *),
323    TerminalSpecialChars(int),
324    tn(int, char **),
325    ttyflush(int);
326
327extern void
328    env_opt(unsigned char *, int),
329    env_opt_start(void),
330    env_opt_start_info(void),
331    env_opt_add(unsigned char *),
332    env_opt_end(int);
333
334extern unsigned char
335    *env_default(int, int),
336    *env_getvalue(const unsigned char *);
337
338extern int
339    get_status(char *),
340    dosynch(char *);
341
342extern cc_t
343    *tcval(int);
344
345#ifndef	USE_TERMIO
346
347extern struct	tchars ntc;
348extern struct	ltchars nltc;
349extern struct	sgttyb nttyb;
350
351# define termEofChar		ntc.t_eofc
352# define termEraseChar		nttyb.sg_erase
353# define termFlushChar		nltc.t_flushc
354# define termIntChar		ntc.t_intrc
355# define termKillChar		nttyb.sg_kill
356# define termLiteralNextChar	nltc.t_lnextc
357# define termQuitChar		ntc.t_quitc
358# define termSuspChar		nltc.t_suspc
359# define termRprntChar		nltc.t_rprntc
360# define termWerasChar		nltc.t_werasc
361# define termStartChar		ntc.t_startc
362# define termStopChar		ntc.t_stopc
363# define termForw1Char		ntc.t_brkc
364extern cc_t termForw2Char;
365extern cc_t termAytChar;
366
367# define termEofCharp		(cc_t *)&ntc.t_eofc
368# define termEraseCharp		(cc_t *)&nttyb.sg_erase
369# define termFlushCharp		(cc_t *)&nltc.t_flushc
370# define termIntCharp		(cc_t *)&ntc.t_intrc
371# define termKillCharp		(cc_t *)&nttyb.sg_kill
372# define termLiteralNextCharp	(cc_t *)&nltc.t_lnextc
373# define termQuitCharp		(cc_t *)&ntc.t_quitc
374# define termSuspCharp		(cc_t *)&nltc.t_suspc
375# define termRprntCharp		(cc_t *)&nltc.t_rprntc
376# define termWerasCharp		(cc_t *)&nltc.t_werasc
377# define termStartCharp		(cc_t *)&ntc.t_startc
378# define termStopCharp		(cc_t *)&ntc.t_stopc
379# define termForw1Charp		(cc_t *)&ntc.t_brkc
380# define termForw2Charp		(cc_t *)&termForw2Char
381# define termAytCharp		(cc_t *)&termAytChar
382
383# else
384
385extern struct	termio new_tc;
386
387# define termEofChar		new_tc.c_cc[VEOF]
388# define termEraseChar		new_tc.c_cc[VERASE]
389# define termIntChar		new_tc.c_cc[VINTR]
390# define termKillChar		new_tc.c_cc[VKILL]
391# define termQuitChar		new_tc.c_cc[VQUIT]
392
393# ifndef	VSUSP
394extern cc_t termSuspChar;
395# else
396#  define termSuspChar		new_tc.c_cc[VSUSP]
397# endif
398# if	defined(VFLUSHO) && !defined(VDISCARD)
399#  define VDISCARD VFLUSHO
400# endif
401# ifndef	VDISCARD
402extern cc_t termFlushChar;
403# else
404#  define termFlushChar		new_tc.c_cc[VDISCARD]
405# endif
406# ifndef VWERASE
407extern cc_t termWerasChar;
408# else
409#  define termWerasChar		new_tc.c_cc[VWERASE]
410# endif
411# ifndef	VREPRINT
412extern cc_t termRprntChar;
413# else
414#  define termRprntChar		new_tc.c_cc[VREPRINT]
415# endif
416# ifndef	VLNEXT
417extern cc_t termLiteralNextChar;
418# else
419#  define termLiteralNextChar	new_tc.c_cc[VLNEXT]
420# endif
421# ifndef	VSTART
422extern cc_t termStartChar;
423# else
424#  define termStartChar		new_tc.c_cc[VSTART]
425# endif
426# ifndef	VSTOP
427extern cc_t termStopChar;
428# else
429#  define termStopChar		new_tc.c_cc[VSTOP]
430# endif
431# ifndef	VEOL
432extern cc_t termForw1Char;
433# else
434#  define termForw1Char		new_tc.c_cc[VEOL]
435# endif
436# ifndef	VEOL2
437extern cc_t termForw2Char;
438# else
439#  define termForw2Char		new_tc.c_cc[VEOL]
440# endif
441# ifndef	VSTATUS
442extern cc_t termAytChar;
443#else
444#  define termAytChar		new_tc.c_cc[VSTATUS]
445#endif
446
447# if defined(__STDC__)
448#  define termEofCharp		&termEofChar
449#  define termEraseCharp	&termEraseChar
450#  define termIntCharp		&termIntChar
451#  define termKillCharp		&termKillChar
452#  define termQuitCharp		&termQuitChar
453#  define termSuspCharp		&termSuspChar
454#  define termFlushCharp	&termFlushChar
455#  define termWerasCharp	&termWerasChar
456#  define termRprntCharp	&termRprntChar
457#  define termLiteralNextCharp	&termLiteralNextChar
458#  define termStartCharp	&termStartChar
459#  define termStopCharp		&termStopChar
460#  define termForw1Charp	&termForw1Char
461#  define termForw2Charp	&termForw2Char
462#  define termAytCharp		&termAytChar
463# else
464	/* Work around a compiler bug */
465#  define termEofCharp		0
466#  define termEraseCharp	0
467#  define termIntCharp		0
468#  define termKillCharp		0
469#  define termQuitCharp		0
470#  define termSuspCharp		0
471#  define termFlushCharp	0
472#  define termWerasCharp	0
473#  define termRprntCharp	0
474#  define termLiteralNextCharp	0
475#  define termStartCharp	0
476#  define termStopCharp		0
477#  define termForw1Charp	0
478#  define termForw2Charp	0
479#  define termAytCharp		0
480# endif
481#endif
482
483
484/* Ring buffer structures which are shared */
485
486extern Ring
487    netoring,
488    netiring,
489    ttyoring,
490    ttyiring;
491
492extern void
493    xmitAO(void),
494    xmitEC(void),
495    xmitEL(void);
496