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ext.h

/*
 * Copyright (c) 1989 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: @(#)ext.h   5.7 (Berkeley) 3/1/91
 *    $Id: ext.h,v 1.9 1999/12/12 14:59:44 dholland Exp $
 */

/*
 * 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 */

#ifdef DIAGNOSTICS
extern int diagnostic;  /* telnet diagnostic capabilities */
#endif /* DIAGNOSTICS */

#ifdef BFTPDAEMON
extern int bftpd;       /* behave as bftp daemon */
#endif /* BFTPDAEMON */

#if defined(SecurID)
extern int require_SecurID;
#endif

#if defined(AUTHENTICATE)
extern int auth_level;
#endif

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

extern char *terminaltype;

extern char *loginprg;

/*
 * I/O data buffers, pointers, and counters.
 */
extern char ptyobuf[BUFSIZ+NETSLOP], *pfrontp, *pbackp;
extern char netibuf[BUFSIZ], *netip;
extern int pcc, ncc;
extern FILE *netfile;

/* printf into netobuf */
#define netoprintf(fmt, ...) fprintf(netfile, fmt, ## __VA_ARGS__)

extern int pty, net;
extern const char *line;
extern int SYNCHing;          /* we are in TELNET SYNCH mode */

void _termstat(void);
void add_slc(int, int, int);
void check_slc(void);
void change_slc(int, int, int);
void cleanup(int) __attribute__ ((noreturn));
void clientstat(int, int, int);
void copy_termbuf(char *, int);
void deferslc(void);
void defer_terminit(void);
void do_opt_slc(unsigned char *, int);
void doeof(void);
void dooption(int);
void dontoption(int);
void edithost(const char *, const char *);
void fatal(int, const char *) __attribute__ ((noreturn));
void fatalperror(int, const char *) __attribute__ ((noreturn));
void get_slc_defaults(void);
void init_env(void);
void init_termbuf(void);
void interrupt(void);
void localstat(void);
void netclear(void);
void netflush(void);
size_t netbuflen(int);
void sendurg(const char *, size_t);

#ifdef DIAGNOSTICS
void printoption(const char *, int);
void printdata(const char *, const char *, int);
void printsub(char, unsigned char *, int);
#endif

void ptyflush(void);
void putchr(int);
void putf(const char *, char *);
void recv_ayt(void);
void send_do(int, int);
void send_dont(int, int);
void send_slc(void);
void send_status(void);
void send_will(int, int);
void send_wont(int, int);
void sendbrk(void);
void sendsusp(void);
void set_termbuf(void);
void start_login(const char *, int, const char *);
void start_slc(int);
void startslave(const char *host, int autologin, char *autoname);

#if defined(AUTHENTICATE)
void start_slave(char *);
#else
void start_slave(char *, int, char *);
#endif

void suboption(void);
void telrcv(void);
void ttloop(void);
void tty_binaryin(int);
void tty_binaryout(int);

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

void tty_rspeed(int);
void tty_setecho(int);
void tty_setedit(int);
void tty_setlinemode(int);
void tty_setlitecho(int);
void tty_setsig(int);
void tty_setsofttab(int);
void tty_tspeed(int);
void willoption(int);
void wontoption(int);
#define writenet(b, l) fwrite(b, 1, l, netfile)
void netopen(void);

#if defined(ENCRYPT)
extern void (*encrypt_output)(const unsigned char *, int);
extern int (*decrypt_input)(int);
extern char *nclearto;
#endif


/*
 * The following are some clocks used to decide how to interpret
 * the relationship between various variables.
 */

extern struct _clocks {
    int system;               /* what the current time is */
    int echotoggle;           /* last time user entered echo character */
    int modenegotiated;       /* last time operating mode negotiated */
    int didnetreceive;        /* last time we read data from network */
    int ttypesubopt;          /* ttype subopt is received */
    int tspeedsubopt;         /* tspeed subopt is received */
    int environsubopt;        /* environ subopt is received */
    int xdisplocsubopt;       /* xdisploc subopt is received */
    int baseline;       /* time started to do timed action */
    int gotDM;                /* when did we last see a data mark */
} clocks;

#define DEFAULT_IM      "%i\r\n%s %r (%h) (%t)\r\n\r\n"

#ifdef USE_SSL

#include <libtelnet/sslapp.h>

/* make telnetd global debug flag visible */
extern int debug;

#endif /* USE_SSL */

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