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. 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  *      @(#)ext.h       8.2 (Berkeley) 12/15/93
  34  * $FreeBSD: src/crypto/telnet/telnetd/ext.h,v 1.2.8.4 2002/04/13 10:59:08 markm Exp $
  35  * $DragonFly: src/crypto/telnet/telnetd/ext.h,v 1.3 2006/01/17 23:50:35 dillon Exp $
  36  */
  37
  38 /*
  39  * Telnet server variable declarations
  40  */
  41 extern char     options[256];
  42 extern char     do_dont_resp[256];
  43 extern char     will_wont_resp[256];
  44 extern int      linemode;       /* linemode on/off */
  45 #ifdef  LINEMODE
  46 extern int      uselinemode;    /* what linemode to use (on/off) */
  47 extern int      editmode;       /* edit modes in use */
  48 extern int      useeditmode;    /* edit modes to use */
  49 extern int      alwayslinemode; /* command line option */
  50 extern int      lmodetype;      /* Client support for linemode */
  51 #endif  /* LINEMODE */
  52 extern int      flowmode;       /* current flow control state */
  53 extern int      restartany;     /* restart output on any character state */
  54 #ifdef DIAGNOSTICS
  55 extern int      diagnostic;     /* telnet diagnostic capabilities */
  56 #endif /* DIAGNOSTICS */
  57 #ifdef BFTPDAEMON
  58 extern int      bftpd;          /* behave as bftp daemon */
  59 #endif /* BFTPDAEMON */
  60 #ifdef  AUTHENTICATION
  61 extern int      auth_level;
  62 #endif
  63
  64 extern slcfun   slctab[NSLC + 1];       /* slc mapping table */
  65
  66 #define TERMINAL_TYPE_SIZE      41      /* allocated space for terminaltype */
  67
  68 char    *terminaltype;
  69
  70 /*
  71  * I/O data buffers, pointers, and counters.
  72  */
  73 extern char     ptyobuf[BUFSIZ+NETSLOP], *pfrontp, *pbackp;
  74
  75 extern char     netibuf[BUFSIZ], *netip;
  76
  77 extern char     netobuf[BUFSIZ], *nfrontp, *nbackp;
  78 extern char     *neturg;                /* one past last bye of urgent data */
  79
  80 extern int      pcc, ncc;
  81
  82 extern int      pty, net;
  83 extern char     line[16];
  84 extern int      SYNCHing;               /* we are in TELNET SYNCH mode */
  85
  86 extern void
  87         _termstat(void),
  88         add_slc(char, char, cc_t),
  89         check_slc(void),
  90         change_slc(char, char, cc_t),
  91         cleanup(int),
  92         clientstat(int, int, int),
  93         copy_termbuf(char *, size_t),
  94         deferslc(void),
  95         defer_terminit(void),
  96         do_opt_slc(unsigned char *, int),
  97         doeof(void),
  98         dooption(int),
  99         dontoption(int),
 100         edithost(char *, char *),
 101         fatal(int, const char *),
 102         fatalperror(int, const char *),
 103         get_slc_defaults(void),
 104         init_env(void),
 105         init_termbuf(void),
 106         interrupt(void),
 107         localstat(void),
 108         flowstat(void),
 109         netclear(void),
 110         netflush(void),
 111 #ifdef DIAGNOSTICS
 112         printoption(const char *, int),
 113         printdata(const char *, char *, int),
 114         printsub(char, unsigned char *, int),
 115 #endif
 116         process_slc(unsigned char, unsigned char, cc_t),
 117         ptyflush(void),
 118         putchr(int),
 119         putf(char *, char *),
 120         recv_ayt(void),
 121         send_do(int, int),
 122         send_dont(int, int),
 123         send_slc(void),
 124         send_status(void),
 125         send_will(int, int),
 126         send_wont(int, int),
 127         sendbrk(void),
 128         sendsusp(void),
 129         set_termbuf(void),
 130         start_login(char *, int, char *),
 131         start_slc(int),
 132 #ifdef  AUTHENTICATION
 133         start_slave(char *),
 134 #else
 135         start_slave(char *, int, char *),
 136 #endif
 137         suboption(void),
 138         telrcv(void),
 139         ttloop(void),
 140         tty_binaryin(int),
 141         tty_binaryout(int);
 142
 143 extern int
 144         end_slc(unsigned char **),
 145         getnpty(void),
 146 #ifndef convex
 147         getpty(int *),
 148 #endif
 149         login_tty(int),
 150         spcset(int, cc_t *, cc_t **),
 151         stilloob(int),
 152         terminit(void),
 153         termstat(void),
 154         tty_flowmode(void),
 155         tty_restartany(void),
 156         tty_isbinaryin(void),
 157         tty_isbinaryout(void),
 158         tty_iscrnl(void),
 159         tty_isecho(void),
 160         tty_isediting(void),
 161         tty_islitecho(void),
 162         tty_isnewmap(void),
 163         tty_israw(void),
 164         tty_issofttab(void),
 165         tty_istrapsig(void),
 166         tty_linemode(void);
 167
 168 extern void
 169         tty_rspeed(int),
 170         tty_setecho(int),
 171         tty_setedit(int),
 172         tty_setlinemode(int),
 173         tty_setlitecho(int),
 174         tty_setsig(int),
 175         tty_setsofttab(int),
 176         tty_tspeed(int),
 177         willoption(int),
 178         wontoption(int);
 179
 180 int     output_data(const char *, ...) __printflike(1, 2);
 181 void    output_datalen(const char *, int);
 182 void    startslave(char *, int, char *);
 183
 184 #ifdef  ENCRYPTION
 185 extern void     (*encrypt_output)(unsigned char *, int);
 186 extern int      (*decrypt_input)(int);
 187 extern char     *nclearto;
 188 #endif  /* ENCRYPTION */
 189
 190
 191 /*
 192  * The following are some clocks used to decide how to interpret
 193  * the relationship between various variables.
 194  */
 195
 196 extern struct {
 197     int
 198         system,                 /* what the current time is */
 199         echotoggle,             /* last time user entered echo character */
 200         modenegotiated,         /* last time operating mode negotiated */
 201         didnetreceive,          /* last time we read data from network */
 202         ttypesubopt,            /* ttype subopt is received */
 203         tspeedsubopt,           /* tspeed subopt is received */
 204         environsubopt,          /* environ subopt is received */
 205         oenvironsubopt,         /* old environ subopt is received */
 206         xdisplocsubopt,         /* xdisploc subopt is received */
 207         baseline,               /* time started to do timed action */
 208         gotDM;                  /* when did we last see a data mark */
 209 } clocks;
 210
 211 #ifndef DEFAULT_IM
 212 #   ifdef ultrix
 213 #    define DEFAULT_IM  "\r\n\r\nULTRIX (%h) (%t)\r\n\r\r\n\r"
 214 #   else
 215 #    if defined(__DragonFly__)
 216 #     define DEFAULT_IM  "\r\n\r\nDragonFly (%h) (%t)\r\n\r\r\n\r"
 217 #    elif defined(__FreeBSD__)
 218 #     define DEFAULT_IM  "\r\n\r\nFreeBSD (%h) (%t)\r\n\r\r\n\r"
 219 #    else
 220 #    define DEFAULT_IM  "\r\n\r\n4.4 BSD UNIX (%h) (%t)\r\n\r\r\n\r"
 221 #    endif
 222 #   endif
 223 #endif