libexec/telnetd/ext.h

   1 /*      $NetBSD: ext.h,v 1.22 2012/01/10 23:39:11 joerg Exp $   */
   2
   3 /*
   4  * Copyright (c) 1989, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  *      from: @(#)ext.h 8.2 (Berkeley) 12/15/93
  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 # ifdef KLUDGELINEMODE
  47 extern int      lmodetype;      /* Client support for linemode */
  48 # endif /* KLUDGELINEMODE */
  49 #endif  /* LINEMODE */
  50 extern int      flowmode;       /* current flow control state */
  51 extern int      restartany;     /* restart output on any character state */
  52 #ifdef DIAGNOSTICS
  53 extern int      diagnostic;     /* telnet diagnostic capabilities */
  54 #endif /* DIAGNOSTICS */
  55 #ifdef SECURELOGIN
  56 extern int      require_secure_login;
  57 #endif
  58 #ifdef AUTHENTICATION
  59 extern int      auth_level;
  60 #endif
  61
  62 extern slcfun   slctab[NSLC + 1];       /* slc mapping table */
  63 extern char     terminaltype[41];
  64
  65 /*
  66  * I/O data buffers, pointers, and counters.
  67  */
  68 extern char     ptyobuf[BUFSIZ+NETSLOP], *pfrontp, *pbackp;
  69 extern char     netibuf[BUFSIZ], *netip;
  70 extern char     netobuf[BUFSIZ+NETSLOP], *nfrontp, *nbackp;
  71 extern char     *neturg;                /* one past last bye of urgent data */
  72 extern int      pcc, ncc;
  73 extern int      pty, net;
  74 extern char     *line;
  75 extern int      SYNCHing;               /* we are in TELNET SYNCH mode */
  76
  77 #include <sys/cdefs.h>
  78
  79 extern void
  80         _termstat(void),
  81         add_slc(char, char, cc_t),
  82         check_slc(void),
  83         change_slc(int, int, cc_t),
  84         cleanup(int) __dead,
  85         clientstat(int, int, int),
  86         copy_termbuf(char *, int),
  87         deferslc(void),
  88         defer_terminit(void),
  89         do_opt_slc(unsigned char *, int),
  90         doeof(void),
  91         dooption(int),
  92         dontoption(int),
  93         edithost(const char *, const char *),
  94         fatal(int, const char *) __dead,
  95         fatalperror(int, const char *) __dead,
  96         get_slc_defaults(void),
  97         init_env(void),
  98         init_termbuf(void),
  99         interrupt(void),
 100         localstat(void),
 101         flowstat(void),
 102         netclear(void),
 103         netflush(void),
 104 #ifdef DIAGNOSTICS
 105         printoption(const char *, int),
 106         printdata(const char *, char *, int),
 107 #ifndef ENCRYPTION
 108         printsub(int, unsigned char *, int),
 109 #endif
 110 #endif
 111         ptyflush(void),
 112         putchr(int),
 113         recv_ayt(void),
 114         send_do(int, int),
 115         send_dont(int, int),
 116         send_slc(void),
 117         send_status(void),
 118         send_will(int, int),
 119         send_wont(int, int),
 120         sendbrk(void),
 121         sendsusp(void),
 122         set_termbuf(void),
 123         start_login(char *, int, char *) __dead,
 124         start_slc(int),
 125         startslave(char *, int, char *),
 126         suboption(void),
 127         telrcv(void),
 128         ttloop(void),
 129         tty_binaryin(int),
 130         tty_binaryout(int);
 131
 132 extern char *
 133         putf(const char *, char *);
 134
 135 extern int
 136         end_slc(unsigned char **),
 137         getnpty(void),
 138         getpty(int *),
 139         spcset(int, cc_t *, cc_t **),
 140         stilloob(int),
 141         terminit(void),
 142         termstat(void),
 143         tty_flowmode(void),
 144         tty_restartany(void),
 145         tty_isbinaryin(void),
 146         tty_isbinaryout(void),
 147         tty_iscrnl(void),
 148         tty_isecho(void),
 149         tty_isediting(void),
 150         tty_islitecho(void),
 151         tty_isnewmap(void),
 152         tty_israw(void),
 153         tty_issofttab(void),
 154         tty_istrapsig(void),
 155         tty_linemode(void);
 156
 157 extern void
 158         tty_rspeed(int),
 159         tty_setecho(int),
 160         tty_setedit(int),
 161         tty_setlinemode(int),
 162         tty_setlitecho(int),
 163         tty_setsig(int),
 164         tty_setsofttab(int),
 165         tty_tspeed(int),
 166         willoption(int),
 167         wontoption(int),
 168         writenet(unsigned char *, int);
 169
 170 extern int output_data(const char *, ...)
 171         __attribute__((__format__(__printf__, 1, 2)));
 172 extern int output_datalen(const char *, size_t);
 173
 174 #ifdef  ENCRYPTION
 175 extern char     *nclearto;
 176 #endif  /* ENCRYPTION */
 177
 178 /*
 179  * The following are some clocks used to decide how to interpret
 180  * the relationship between various variables.
 181  */
 182 extern struct {
 183     int
 184         system,                 /* what the current time is */
 185         echotoggle,             /* last time user entered echo character */
 186         modenegotiated,         /* last time operating mode negotiated */
 187         didnetreceive,          /* last time we read data from network */
 188         ttypesubopt,            /* ttype subopt is received */
 189         tspeedsubopt,           /* tspeed subopt is received */
 190         environsubopt,          /* environ subopt is received */
 191         oenvironsubopt,         /* old environ subopt is received */
 192         xdisplocsubopt,         /* xdisploc subopt is received */
 193         baseline,               /* time started to do timed action */
 194         gotDM;                  /* when did we last see a data mark */
 195 } clocks;
 196
 197 #ifndef DEFAULT_IM
 198 # define DEFAULT_IM     "\r\n\r\n4.4 BSD UNIX (%h) (%t)\r\n\r\r\n\r"
 199 #endif
 200
 201 #ifdef AUTHENTICATION
 202 #include <libtelnet/auth.h>
 203 #endif
 204
 205 #ifdef ENCRYPTION
 206 #include <libtelnet/encrypt.h>
 207 #endif