libexec/telnetd/ext.h

   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: src/crypto/telnet/telnetd/ext.h,v 1.2.8.4 2002/04/13 10:59:08 markm Exp $
  31  */
  32
  33 /*
  34  * Telnet server variable declarations
  35  */
  36 extern char     options[256];
  37 extern char     do_dont_resp[256];
  38 extern char     will_wont_resp[256];
  39 extern int      linemode;       /* linemode on/off */
  40 #ifdef  LINEMODE
  41 extern int      uselinemode;    /* what linemode to use (on/off) */
  42 extern int      editmode;       /* edit modes in use */
  43 extern int      useeditmode;    /* edit modes to use */
  44 extern int      alwayslinemode; /* command line option */
  45 extern int      lmodetype;      /* Client support for linemode */
  46 #endif  /* LINEMODE */
  47 extern int      flowmode;       /* current flow control state */
  48 extern int      restartany;     /* restart output on any character state */
  49 #ifdef DIAGNOSTICS
  50 extern int      diagnostic;     /* telnet diagnostic capabilities */
  51 #endif /* DIAGNOSTICS */
  52 #ifdef BFTPDAEMON
  53 extern int      bftpd;          /* behave as bftp daemon */
  54 #endif /* BFTPDAEMON */
  55 #ifdef  AUTHENTICATION
  56 extern int      auth_level;
  57 #endif
  58
  59 extern slcfun   slctab[NSLC + 1];       /* slc mapping table */
  60
  61 #define TERMINAL_TYPE_SIZE      41      /* allocated space for terminaltype */
  62
  63 char    *terminaltype;
  64
  65 /*
  66  * I/O data buffers, pointers, and counters.
  67  */
  68 extern char     ptyobuf[BUFSIZ+NETSLOP], *pfrontp, *pbackp;
  69
  70 extern char     netibuf[BUFSIZ], *netip;
  71
  72 extern char     netobuf[BUFSIZ], *nfrontp, *nbackp;
  73 extern char     *neturg;                /* one past last bye of urgent data */
  74
  75 extern int      pcc, ncc;
  76
  77 extern int      pty, net;
  78 extern char     line[16];
  79 extern int      SYNCHing;               /* we are in TELNET SYNCH mode */
  80
  81 extern void
  82         _termstat(void),
  83         add_slc(char, char, cc_t),
  84         check_slc(void),
  85         change_slc(char, char, cc_t),
  86         cleanup(int) __dead2,
  87         clientstat(int, int, int),
  88         copy_termbuf(char *, size_t),
  89         deferslc(void),
  90         defer_terminit(void),
  91         do_opt_slc(unsigned char *, int),
  92         doeof(void),
  93         dooption(int),
  94         dontoption(int),
  95         edithost(char *, char *),
  96         fatal(int, const char *) __dead2,
  97         fatalperror(int, const char *) __dead2,
  98         get_slc_defaults(void),
  99         init_env(void),
 100         init_termbuf(void),
 101         interrupt(void),
 102         localstat(void),
 103         flowstat(void),
 104         netclear(void),
 105         netflush(void),
 106 #ifdef DIAGNOSTICS
 107         printoption(const char *, int),
 108         printdata(const char *, char *, int),
 109         printsub(char, unsigned char *, int),
 110 #endif
 111         process_slc(unsigned char, unsigned char, cc_t),
 112         ptyflush(void),
 113         putchr(int),
 114         putf(char *, char *),
 115         recv_ayt(void),
 116         send_do(int, int),
 117         send_dont(int, int),
 118         send_slc(void),
 119         send_status(void),
 120         send_will(int, int),
 121         send_wont(int, int),
 122         sendbrk(void),
 123         sendsusp(void),
 124         set_termbuf(void),
 125         start_login(char *, int, char *) __dead2,
 126         start_slc(int),
 127 #ifdef  AUTHENTICATION
 128         start_slave(char *),
 129 #else
 130         start_slave(char *, int, char *),
 131 #endif
 132         suboption(void),
 133         telrcv(void),
 134         ttloop(void),
 135         tty_binaryin(int),
 136         tty_binaryout(int);
 137
 138 extern int
 139         end_slc(unsigned char **),
 140         getnpty(void),
 141 #ifndef convex
 142         getpty(int *),
 143 #endif
 144         login_tty(int),
 145         spcset(int, cc_t *, cc_t **),
 146         stilloob(int),
 147         terminit(void),
 148         termstat(void),
 149         tty_flowmode(void),
 150         tty_restartany(void),
 151         tty_isbinaryin(void),
 152         tty_isbinaryout(void),
 153         tty_iscrnl(void),
 154         tty_isecho(void),
 155         tty_isediting(void),
 156         tty_islitecho(void),
 157         tty_isnewmap(void),
 158         tty_israw(void),
 159         tty_issofttab(void),
 160         tty_istrapsig(void),
 161         tty_linemode(void);
 162
 163 extern void
 164         tty_rspeed(int),
 165         tty_setecho(int),
 166         tty_setedit(int),
 167         tty_setlinemode(int),
 168         tty_setlitecho(int),
 169         tty_setsig(int),
 170         tty_setsofttab(int),
 171         tty_tspeed(int),
 172         willoption(int),
 173         wontoption(int);
 174
 175 int     output_data(const char *, ...) __printflike(1, 2);
 176 void    output_datalen(const char *, int);
 177 void    startslave(char *, int, char *);
 178
 179 #ifdef  ENCRYPTION
 180 extern void     (*encrypt_output)(unsigned char *, int);
 181 extern int      (*decrypt_input)(int);
 182 extern char     *nclearto;
 183 #endif  /* ENCRYPTION */
 184
 185
 186 /*
 187  * The following are some clocks used to decide how to interpret
 188  * the relationship between various variables.
 189  */
 190
 191 extern struct {
 192     int
 193         system,                 /* what the current time is */
 194         echotoggle,             /* last time user entered echo character */
 195         modenegotiated,         /* last time operating mode negotiated */
 196         didnetreceive,          /* last time we read data from network */
 197         ttypesubopt,            /* ttype subopt is received */
 198         tspeedsubopt,           /* tspeed subopt is received */
 199         environsubopt,          /* environ subopt is received */
 200         oenvironsubopt,         /* old environ subopt is received */
 201         xdisplocsubopt,         /* xdisploc subopt is received */
 202         baseline,               /* time started to do timed action */
 203         gotDM;                  /* when did we last see a data mark */
 204 } clocks;
 205
 206 #ifndef DEFAULT_IM
 207 #   ifdef ultrix
 208 #    define DEFAULT_IM  "\r\n\r\nULTRIX (%h) (%t)\r\n\r\r\n\r"
 209 #   else
 210 #    if defined(__DragonFly__)
 211 #     define DEFAULT_IM  "\r\n\r\nDragonFly (%h) (%t)\r\n\r\r\n\r"
 212 #    elif defined(__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