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  * $DragonFly: src/crypto/telnet/telnetd/ext.h,v 1.3 2006/01/17 23:50:35 dillon Exp $
  32  */
  33
  34 /*
  35  * Telnet server variable declarations
  36  */
  37 extern char     options[256];
  38 extern char     do_dont_resp[256];
  39 extern char     will_wont_resp[256];
  40 extern int      linemode;       /* linemode on/off */
  41 #ifdef  LINEMODE
  42 extern int      uselinemode;    /* what linemode to use (on/off) */
  43 extern int      editmode;       /* edit modes in use */
  44 extern int      useeditmode;    /* edit modes to use */
  45 extern int      alwayslinemode; /* command line option */
  46 extern int      lmodetype;      /* Client support for linemode */
  47 #endif  /* LINEMODE */
  48 extern int      flowmode;       /* current flow control state */
  49 extern int      restartany;     /* restart output on any character state */
  50 #ifdef DIAGNOSTICS
  51 extern int      diagnostic;     /* telnet diagnostic capabilities */
  52 #endif /* DIAGNOSTICS */
  53 #ifdef BFTPDAEMON
  54 extern int      bftpd;          /* behave as bftp daemon */
  55 #endif /* BFTPDAEMON */
  56 #ifdef  AUTHENTICATION
  57 extern int      auth_level;
  58 #endif
  59
  60 extern slcfun   slctab[NSLC + 1];       /* slc mapping table */
  61
  62 #define TERMINAL_TYPE_SIZE      41      /* allocated space for terminaltype */
  63
  64 char    *terminaltype;
  65
  66 /*
  67  * I/O data buffers, pointers, and counters.
  68  */
  69 extern char     ptyobuf[BUFSIZ+NETSLOP], *pfrontp, *pbackp;
  70
  71 extern char     netibuf[BUFSIZ], *netip;
  72
  73 extern char     netobuf[BUFSIZ], *nfrontp, *nbackp;
  74 extern char     *neturg;                /* one past last bye of urgent data */
  75
  76 extern int      pcc, ncc;
  77
  78 extern int      pty, net;
  79 extern char     line[16];
  80 extern int      SYNCHing;               /* we are in TELNET SYNCH mode */
  81
  82 extern void
  83         _termstat(void),
  84         add_slc(char, char, cc_t),
  85         check_slc(void),
  86         change_slc(char, char, cc_t),
  87         cleanup(int),
  88         clientstat(int, int, int),
  89         copy_termbuf(char *, size_t),
  90         deferslc(void),
  91         defer_terminit(void),
  92         do_opt_slc(unsigned char *, int),
  93         doeof(void),
  94         dooption(int),
  95         dontoption(int),
  96         edithost(char *, char *),
  97         fatal(int, const char *),
  98         fatalperror(int, const char *),
  99         get_slc_defaults(void),
 100         init_env(void),
 101         init_termbuf(void),
 102         interrupt(void),
 103         localstat(void),
 104         flowstat(void),
 105         netclear(void),
 106         netflush(void),
 107 #ifdef DIAGNOSTICS
 108         printoption(const char *, int),
 109         printdata(const char *, char *, int),
 110         printsub(char, unsigned char *, int),
 111 #endif
 112         process_slc(unsigned char, unsigned char, cc_t),
 113         ptyflush(void),
 114         putchr(int),
 115         putf(char *, char *),
 116         recv_ayt(void),
 117         send_do(int, int),
 118         send_dont(int, int),
 119         send_slc(void),
 120         send_status(void),
 121         send_will(int, int),
 122         send_wont(int, int),
 123         sendbrk(void),
 124         sendsusp(void),
 125         set_termbuf(void),
 126         start_login(char *, int, char *),
 127         start_slc(int),
 128 #ifdef  AUTHENTICATION
 129         start_slave(char *),
 130 #else
 131         start_slave(char *, int, char *),
 132 #endif
 133         suboption(void),
 134         telrcv(void),
 135         ttloop(void),
 136         tty_binaryin(int),
 137         tty_binaryout(int);
 138
 139 extern int
 140         end_slc(unsigned char **),
 141         getnpty(void),
 142 #ifndef convex
 143         getpty(int *),
 144 #endif
 145         login_tty(int),
 146         spcset(int, cc_t *, cc_t **),
 147         stilloob(int),
 148         terminit(void),
 149         termstat(void),
 150         tty_flowmode(void),
 151         tty_restartany(void),
 152         tty_isbinaryin(void),
 153         tty_isbinaryout(void),
 154         tty_iscrnl(void),
 155         tty_isecho(void),
 156         tty_isediting(void),
 157         tty_islitecho(void),
 158         tty_isnewmap(void),
 159         tty_israw(void),
 160         tty_issofttab(void),
 161         tty_istrapsig(void),
 162         tty_linemode(void);
 163
 164 extern void
 165         tty_rspeed(int),
 166         tty_setecho(int),
 167         tty_setedit(int),
 168         tty_setlinemode(int),
 169         tty_setlitecho(int),
 170         tty_setsig(int),
 171         tty_setsofttab(int),
 172         tty_tspeed(int),
 173         willoption(int),
 174         wontoption(int);
 175
 176 int     output_data(const char *, ...) __printflike(1, 2);
 177 void    output_datalen(const char *, int);
 178 void    startslave(char *, int, char *);
 179
 180 #ifdef  ENCRYPTION
 181 extern void     (*encrypt_output)(unsigned char *, int);
 182 extern int      (*decrypt_input)(int);
 183 extern char     *nclearto;
 184 #endif  /* ENCRYPTION */
 185
 186
 187 /*
 188  * The following are some clocks used to decide how to interpret
 189  * the relationship between various variables.
 190  */
 191
 192 extern struct {
 193     int
 194         system,                 /* what the current time is */
 195         echotoggle,             /* last time user entered echo character */
 196         modenegotiated,         /* last time operating mode negotiated */
 197         didnetreceive,          /* last time we read data from network */
 198         ttypesubopt,            /* ttype subopt is received */
 199         tspeedsubopt,           /* tspeed subopt is received */
 200         environsubopt,          /* environ subopt is received */
 201         oenvironsubopt,         /* old environ subopt is received */
 202         xdisplocsubopt,         /* xdisploc subopt is received */
 203         baseline,               /* time started to do timed action */
 204         gotDM;                  /* when did we last see a data mark */
 205 } clocks;
 206
 207 #ifndef DEFAULT_IM
 208 #   ifdef ultrix
 209 #    define DEFAULT_IM  "\r\n\r\nULTRIX (%h) (%t)\r\n\r\r\n\r"
 210 #   else
 211 #    if defined(__DragonFly__)
 212 #     define DEFAULT_IM  "\r\n\r\nDragonFly (%h) (%t)\r\n\r\r\n\r"
 213 #    elif defined(__FreeBSD__)
 214 #     define DEFAULT_IM  "\r\n\r\nFreeBSD (%h) (%t)\r\n\r\r\n\r"
 215 #    else
 216 #    define DEFAULT_IM  "\r\n\r\n4.4 BSD UNIX (%h) (%t)\r\n\r\r\n\r"
 217 #    endif
 218 #   endif
 219 #endif