externs.h

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/*
 * Copyright (c) 1988, 1990, 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.
 * 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.
 *
 *	@(#)externs.h	8.3 (Berkeley) 5/30/95
 */

#ifndef	BSD
# define BSD 43
#endif

#ifdef HAVE_TERMIOS_H
#define USE_TERMIO
#else /* !HAVE_TERMIOS_H */
#ifdef HAVE_TERMIO_H
#define USE_TERMIO
#define SYSV_TERMIO
#endif
#endif /* HAVE_TERMIOS_H */

/*
 * ucb stdio.h defines BSD as something wierd
 */
#if defined(sun) && defined(__svr4__)
#define BSD 43
#endif

#ifndef	USE_TERMIO
# if BSD > 43 || defined(SYSV_TERMIO)
#  define USE_TERMIO
# endif
#endif

#include <stdio.h>
#include <setjmp.h>
#if defined(CRAY) && !defined(NO_BSD_SETJMP)
#include <bsdsetjmp.h>
#endif
#include <sys/ioctl.h>
#ifdef HAVE_SYS_FILIO_H
#include <sys/filio.h>
#endif
#ifdef CRAY
# include <errno.h>
#endif /* CRAY */
#ifdef	USE_TERMIO
# ifndef	VINTR
#  ifdef SYSV_TERMIO
#   include <termio.h>
#  else
#   include <termios.h>
#  endif
# endif
#endif
#if defined(NO_CC_T) || !defined(USE_TERMIO)
# if !defined(USE_TERMIO)
typedef char cc_t;
# else
typedef unsigned char cc_t;
# endif
#endif

#if defined (USE_TERMIO) && !defined (SYSV_TERMIO)
# define termio termios
#endif

#ifndef	NO_STRING_H
#include <string.h>
#else
#include <strings.h>
#endif

#ifndef	_POSIX_VDISABLE
# ifdef sun
#  include <sys/param.h>	/* pick up VDISABLE definition, maybe */
# endif
# ifdef VDISABLE
#  define _POSIX_VDISABLE VDISABLE
# else
#  define _POSIX_VDISABLE ((cc_t)'\377')
# endif
#endif

#define	SUBBUFSIZE	256

#ifndef CRAY
# ifndef errno
extern int errno;		/* outside this world */
# endif
#endif /* !CRAY */

extern int
    autologin,		/* Autologin enabled */
    skiprc,		/* Don't process the ~/.telnetrc file */
    eight,		/* use eight bit mode (binary in and/or out */
    flushout,		/* flush output */
    connected,		/* Are we connected to the other side? */
    globalmode,		/* Mode tty should be in */
    In3270,			/* Are we in 3270 mode? */
    telnetport,		/* Are we connected to the telnet port? */
    localflow,		/* Flow control handled locally */
    restartany,		/* If flow control, restart output on any character */
    localchars,		/* we recognize interrupt/quit */
    donelclchars,		/* the user has set "localchars" */
    showoptions,
    net,		/* Network file descriptor */
    tin,		/* Terminal input file descriptor */
    tout,		/* Terminal output file descriptor */
    crlf,		/* Should '\r' be mapped to <CR><LF> (or <CR><NUL>)? */
    autoflush,		/* flush output when interrupting? */
    autosynch,		/* send interrupt characters with SYNCH? */
    SYNCHing,		/* Is the stream in telnet SYNCH mode? */
    donebinarytoggle,	/* the user has put us in binary */
    dontlecho,		/* do we suppress local echoing right now? */
    crmod,
    netdata,		/* Print out network data flow */
    prettydump,		/* Print "netdata" output in user readable format */
#if	defined(TN3270)
    cursesdata,		/* Print out curses data flow */
    apitrace,		/* Trace API transactions */
#endif	/* defined(TN3270) */
    termdata,		/* Print out terminal data flow */
    debug;		/* Debug level */

extern cc_t escape;	/* Escape to command mode */
extern cc_t rlogin;	/* Rlogin mode escape character */
#ifdef	KLUDGELINEMODE
extern cc_t echoc;	/* Toggle local echoing */
#endif

extern char
    *prompt;		/* Prompt for command. */

extern char
    doopt[],
    dont[],
    will[],
    wont[],
    options[],		/* All the little options */
    *hostname;		/* Who are we connected to? */
#ifdef	ENCRYPTION
extern void (*encrypt_output) P((unsigned char *, int));
extern int (*decrypt_input) P((int));
#endif	/* ENCRYPTION */

/*
 * 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;}

/*
 * 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


extern FILE
    *NetTrace;		/* Where debugging output goes */
extern unsigned char
    NetTraceFile[];	/* Name of file where debugging output goes */
extern void
    SetNetTrace (char *);	/* Function to change where debugging goes */

extern jmp_buf
    peerdied,
    toplevel;		/* For error conditions. */

extern void
    command (int, char *, int),
    Dump (char, unsigned char *, int),
    init_3270 (void),
    printoption (char *, int, int),
    printsub (char, unsigned char *, int),
    sendnaws (void),
    setconnmode (int),
    setcommandmode (void),
    setneturg (void),
    sys_telnet_init (void),
    telnet (char *),
    tel_enter_binary (int),
    TerminalFlushOutput (void),
    TerminalNewMode (int),
    TerminalRestoreState (void),
    TerminalSaveState (void),
    tninit (void),
    upcase (char *),
    willoption (int),
    wontoption (int);

extern void
    send_do (int, int),
    send_dont (int, int),
    send_will (int, int),
    send_wont (int, int);

extern void
    lm_will (unsigned char *, int),
    lm_wont (unsigned char *, int),
    lm_do (unsigned char *, int),
    lm_dont (unsigned char *, int),
    lm_mode (unsigned char *, int, int);

extern void
    slc_init (void),
    slcstate (void),
    slc_mode_export (void),
    slc_mode_import (int),
    slc_import (int),
    slc_export (void),
    slc (unsigned char *, int),
    slc_check (void),
    slc_start_reply (void),
    slc_add_reply (unsigned char, unsigned char, cc_t),
    slc_end_reply (void);
extern int
    slc_update (void);

extern void
    env_opt (unsigned char *, int),
    env_opt_start (void),
    env_opt_start_info (void),
    env_opt_add (unsigned char *),
    env_opt_end (int);

extern unsigned char
    *env_default (int, int),
    *env_getvalue (unsigned char *);

extern int
    get_status (void),
    dosynch (void);

extern cc_t
    *tcval (int);

#ifndef	USE_TERMIO

extern struct	tchars ntc;
extern struct	ltchars nltc;
extern struct	sgttyb nttyb;

# define termEofChar		ntc.t_eofc
# define termEraseChar		nttyb.sg_erase
# define termFlushChar		nltc.t_flushc
# define termIntChar		ntc.t_intrc
# define termKillChar		nttyb.sg_kill
# define termLiteralNextChar	nltc.t_lnextc
# define termQuitChar		ntc.t_quitc
# define termSuspChar		nltc.t_suspc
# define termRprntChar		nltc.t_rprntc
# define termWerasChar		nltc.t_werasc
# define termStartChar		ntc.t_startc
# define termStopChar		ntc.t_stopc
# define termForw1Char		ntc.t_brkc
extern cc_t termForw2Char;
extern cc_t termAytChar;

# define termEofCharp		(cc_t *)&ntc.t_eofc
# define termEraseCharp		(cc_t *)&nttyb.sg_erase
# define termFlushCharp		(cc_t *)&nltc.t_flushc
# define termIntCharp		(cc_t *)&ntc.t_intrc
# define termKillCharp		(cc_t *)&nttyb.sg_kill
# define termLiteralNextCharp	(cc_t *)&nltc.t_lnextc
# define termQuitCharp		(cc_t *)&ntc.t_quitc
# define termSuspCharp		(cc_t *)&nltc.t_suspc
# define termRprntCharp		(cc_t *)&nltc.t_rprntc
# define termWerasCharp		(cc_t *)&nltc.t_werasc
# define termStartCharp		(cc_t *)&ntc.t_startc
# define termStopCharp		(cc_t *)&ntc.t_stopc
# define termForw1Charp		(cc_t *)&ntc.t_brkc
# define termForw2Charp		(cc_t *)&termForw2Char
# define termAytCharp		(cc_t *)&termAytChar

# else

extern struct	termio new_tc;

# define termEofChar		new_tc.c_cc[VEOF]
# define termEraseChar		new_tc.c_cc[VERASE]
# define termIntChar		new_tc.c_cc[VINTR]
# define termKillChar		new_tc.c_cc[VKILL]
# define termQuitChar		new_tc.c_cc[VQUIT]

# ifndef	VSUSP
extern cc_t termSuspChar;
# else
#  define termSuspChar		new_tc.c_cc[VSUSP]
# endif
# if	defined(VFLUSHO) && !defined(VDISCARD)
#  define VDISCARD VFLUSHO
# endif
# ifndef	VDISCARD
extern cc_t termFlushChar;
# else
#  define termFlushChar		new_tc.c_cc[VDISCARD]
# endif
# ifndef VWERASE
extern cc_t termWerasChar;
# else
#  define termWerasChar		new_tc.c_cc[VWERASE]
# endif
# ifndef	VREPRINT
extern cc_t termRprntChar;
# else
#  define termRprntChar		new_tc.c_cc[VREPRINT]
# endif
# ifndef	VLNEXT
extern cc_t termLiteralNextChar;
# else
#  define termLiteralNextChar	new_tc.c_cc[VLNEXT]
# endif
# ifndef	VSTART
extern cc_t termStartChar;
# else
#  define termStartChar		new_tc.c_cc[VSTART]
# endif
# ifndef	VSTOP
extern cc_t termStopChar;
# else
#  define termStopChar		new_tc.c_cc[VSTOP]
# endif
# ifndef	VEOL
extern cc_t termForw1Char;
# else
#  define termForw1Char		new_tc.c_cc[VEOL]
# endif
# ifndef	VEOL2
extern cc_t termForw2Char;
# else
#  define termForw2Char		new_tc.c_cc[VEOL]
# endif
# ifndef	VSTATUS
extern cc_t termAytChar;
#else
#  define termAytChar		new_tc.c_cc[VSTATUS]
#endif

# if !defined(CRAY) || defined(__STDC__)
#  define termEofCharp		&termEofChar
#  define termEraseCharp	&termEraseChar
#  define termIntCharp		&termIntChar
#  define termKillCharp		&termKillChar
#  define termQuitCharp		&termQuitChar
#  define termSuspCharp		&termSuspChar
#  define termFlushCharp	&termFlushChar
#  define termWerasCharp	&termWerasChar
#  define termRprntCharp	&termRprntChar
#  define termLiteralNextCharp	&termLiteralNextChar
#  define termStartCharp	&termStartChar
#  define termStopCharp		&termStopChar
#  define termForw1Charp	&termForw1Char
#  define termForw2Charp	&termForw2Char
#  define termAytCharp		&termAytChar
# else
	/* Work around a compiler bug */
#  define termEofCharp		0
#  define termEraseCharp	0
#  define termIntCharp		0
#  define termKillCharp		0
#  define termQuitCharp		0
#  define termSuspCharp		0
#  define termFlushCharp	0
#  define termWerasCharp	0
#  define termRprntCharp	0
#  define termLiteralNextCharp	0
#  define termStartCharp	0
#  define termStopCharp		0
#  define termForw1Charp	0
#  define termForw2Charp	0
#  define termAytCharp		0
# endif
#endif


/* Ring buffer structures which are shared */

extern Ring
    netoring,
    netiring,
    ttyoring,
    ttyiring;

/* Tn3270 section */
#if	defined(TN3270)

extern int
    HaveInput,		/* Whether an asynchronous I/O indication came in */
    noasynchtty,	/* Don't do signals on I/O (SIGURG, SIGIO) */
    noasynchnet,	/* Don't do signals on I/O (SIGURG, SIGIO) */
    sigiocount,		/* Count of SIGIO receptions */
    shell_active;	/* Subshell is active */

extern char
    *Ibackp,		/* Oldest byte of 3270 data */
    Ibuf[],		/* 3270 buffer */
    *Ifrontp,		/* Where next 3270 byte goes */
    tline[],
    *transcom;		/* Transparent command */

extern int
    settranscom (int, char**);

extern void
    inputAvailable (int);
#endif	/* defined(TN3270) */