/*      $NetBSD: ext.h,v 1.23 2020/04/23 00:03:40 joerg 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. 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: @(#)ext.h 8.2 (Berkeley) 12/15/93
 */

/*
 * Telnet server variable declarations
 */
extern char     options[256];
extern char     do_dont_resp[256];
extern char     will_wont_resp[256];
extern int      linemode;       /* linemode on/off */
#ifdef  LINEMODE
extern int      uselinemode;    /* what linemode to use (on/off) */
extern int      editmode;       /* edit modes in use */
extern int      useeditmode;    /* edit modes to use */
extern int      alwayslinemode; /* command line option */
# ifdef KLUDGELINEMODE
extern int      lmodetype;      /* Client support for linemode */
# endif /* KLUDGELINEMODE */
#endif  /* LINEMODE */
extern int      flowmode;       /* current flow control state */
extern int      restartany;     /* restart output on any character state */
#ifdef DIAGNOSTICS
extern int      diagnostic;     /* telnet diagnostic capabilities */
#endif /* DIAGNOSTICS */
#ifdef SECURELOGIN
extern int      require_secure_login;
#endif
#ifdef AUTHENTICATION
extern int      auth_level;
#endif

extern slcfun   slctab[NSLC + 1];       /* slc mapping table */
extern char     terminaltype[41];

/*
 * I/O data buffers, pointers, and counters.
 */
extern char     ptyobuf[BUFSIZ+NETSLOP], *pfrontp, *pbackp;
extern char     netibuf[BUFSIZ], *netip;
extern char     netobuf[BUFSIZ+NETSLOP], *nfrontp, *nbackp;
extern char     *neturg;                /* one past last bye of urgent data */
extern int      pcc, ncc;
extern int      pty, net;
extern char     *line;
extern int      SYNCHing;               /* we are in TELNET SYNCH mode */

#include <sys/cdefs.h>

extern void
        _termstat(void),
        add_slc(char, char, cc_t),
        check_slc(void),
        change_slc(int, int, cc_t),
        cleanup(int) __dead,
        clientstat(int, int, int),
        copy_termbuf(char *, int),
        deferslc(void),
        defer_terminit(void),
        do_opt_slc(unsigned char *, int),
        doeof(void),
        dooption(int),
        dontoption(int),
        edithost(const char *, const char *),
        fatal(int, const char *) __dead,
        fatalperror(int, const char *) __dead,
        get_slc_defaults(void),
        init_env(void),
        init_termbuf(void),
        interrupt(void),
        localstat(void),
        flowstat(void),
        netclear(void),
        netflush(void),
#ifdef DIAGNOSTICS
        printoption(const char *, int),
        printdata(const char *, char *, int),
#ifndef ENCRYPTION
        printsub(int, unsigned char *, int),
#endif
#endif
        ptyflush(void),
        putchr(int),
        recv_ayt(void),
        send_do(int, int),
        send_dont(int, int),
        send_slc(void),
        send_status(void),
        send_will(int, int),
        send_wont(int, int),
        sendbrk(void),
        sendsusp(void),
        set_termbuf(void),
        start_login(char *, int, char *) __dead,
        start_slc(int),
        startslave(char *, int, char *),
        suboption(void),
        telrcv(void),
        ttloop(void),
        tty_binaryin(int),
        tty_binaryout(int);

extern char *
        putf(const char *, char *);

extern int
        end_slc(unsigned char **),
        getnpty(void),
        getpty(int *),
        spcset(int, cc_t *, cc_t **),
        stilloob(int),
        terminit(void),
        termstat(void),
        tty_flowmode(void),
        tty_restartany(void),
        tty_isbinaryin(void),
        tty_isbinaryout(void),
        tty_iscrnl(void),
        tty_isecho(void),
        tty_isediting(void),
        tty_islitecho(void),
        tty_isnewmap(void),
        tty_israw(void),
        tty_issofttab(void),
        tty_istrapsig(void),
        tty_linemode(void);

extern void
        tty_rspeed(int),
        tty_setecho(int),
        tty_setedit(int),
        tty_setlinemode(int),
        tty_setlitecho(int),
        tty_setsig(int),
        tty_setsofttab(int),
        tty_tspeed(int),
        willoption(int),
        wontoption(int),
        writenet(unsigned char *, int);

extern int output_data(const char *, ...)
        __attribute__((__format__(__printf__, 1, 2)));
extern int output_datalen(const char *, size_t);

#ifdef  ENCRYPTION
extern char     *nclearto;
#endif  /* ENCRYPTION */

/*
 * The following are some clocks used to decide how to interpret
 * the relationship between various variables.
 */
extern struct clockstate {
    int
        system,                 /* what the current time is */
        echotoggle,             /* last time user entered echo character */
        modenegotiated,         /* last time operating mode negotiated */
        didnetreceive,          /* last time we read data from network */
        ttypesubopt,            /* ttype subopt is received */
        tspeedsubopt,           /* tspeed subopt is received */
        environsubopt,          /* environ subopt is received */
        oenvironsubopt,         /* old environ subopt is received */
        xdisplocsubopt,         /* xdisploc subopt is received */
        baseline,               /* time started to do timed action */
        gotDM;                  /* when did we last see a data mark */
} clocks;

#ifndef DEFAULT_IM
# define DEFAULT_IM     "\r\n\r\n4.4 BSD UNIX (%h) (%t)\r\n\r\r\n\r"
#endif

#ifdef AUTHENTICATION
#include <libtelnet/auth.h>
#endif

#ifdef ENCRYPTION
#include <libtelnet/encrypt.h>
#endif