src/bin/network/telnetd/defs.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  *      @(#)defs.h      8.1 (Berkeley) 6/4/93
  34  * $FreeBSD: src/contrib/telnet/telnetd/defs.h,v 1.2 2001/08/29 14:16:15 markm Exp $
  35  */
  36
  37 /*
  38  * Telnet server defines
  39  */
  40 #include <sys/types.h>
  41 #include <sys/param.h>
  42
  43 #ifndef BSD
  44 # define        BSD 43
  45 #endif
  46
  47 #if defined(PRINTOPTIONS) && defined(DIAGNOSTICS)
  48 #define TELOPTS
  49 #define TELCMDS
  50 #define SLC_NAMES
  51 #endif
  52
  53 #if     defined(SYSV_TERMIO) && !defined(USE_TERMIO)
  54 # define        USE_TERMIO
  55 #endif
  56
  57 #include <sys/socket.h>
  58 #include <sys/wait.h>
  59 #include <fcntl.h>
  60 //#include <sys/file.h>
  61 #include <sys/stat.h>
  62 #include <sys/time.h>
  63 #ifndef FILIO_H
  64 #include <sys/ioctl.h>
  65 #else
  66 #include <sys/filio.h>
  67 #endif
  68
  69 #include <netinet/in.h>
  70
  71 #include <arpa/telnet.h>
  72
  73 #include <stdio.h>
  74 #ifdef  __STDC__
  75 #include <stdlib.h>
  76 #endif
  77 #include <signal.h>
  78 #include <errno.h>
  79 #include <netdb.h>
  80 #include <syslog.h>
  81 #ifndef LOG_DAEMON
  82 #define LOG_DAEMON      0
  83 #endif
  84 #ifndef LOG_ODELAY
  85 #define LOG_ODELAY      0
  86 #endif
  87 #include <ctype.h>
  88 #ifndef NO_STRING_H
  89 #include <string.h>
  90 #else
  91 #include <strings.h>
  92 #endif
  93
  94 #ifndef USE_TERMIO
  95 #include <sgtty.h>
  96 #else
  97 # ifdef SYSV_TERMIO
  98 # include <termio.h>
  99 # else
 100 # include <termios.h>
 101 # endif
 102 #endif
 103 #if !defined(USE_TERMIO) || defined(NO_CC_T)
 104 typedef unsigned char cc_t;
 105 #endif
 106
 107 #ifdef  __STDC__
 108 #include <unistd.h>
 109 #endif
 110
 111 #ifndef _POSIX_VDISABLE
 112 # ifdef VDISABLE
 113 #  define _POSIX_VDISABLE VDISABLE
 114 # else
 115 #  define _POSIX_VDISABLE ((unsigned char)'\377')
 116 # endif
 117 #endif
 118
 119 #if     !defined(TIOCSCTTY) && defined(TCSETCTTY)
 120 # define        TIOCSCTTY TCSETCTTY
 121 #endif
 122
 123 #ifndef FD_SET
 124 #ifndef HAVE_fd_set
 125 typedef struct fd_set { int fds_bits[1]; } fd_set;
 126 #endif
 127
 128 #define FD_SET(n, p)    ((p)->fds_bits[0] |= (1<<(n)))
 129 #define FD_CLR(n, p)    ((p)->fds_bits[0] &= ~(1<<(n)))
 130 #define FD_ISSET(n, p)  ((p)->fds_bits[0] & (1<<(n)))
 131 #define FD_ZERO(p)      ((p)->fds_bits[0] = 0)
 132 #endif  /* FD_SET */
 133
 134 /*
 135  * I/O data buffers defines
 136  */
 137 #define NETSLOP 64
 138
 139 #define NIACCUM(c)      {   *netip++ = c; \
 140                             ncc++; \
 141                         }
 142
 143 /* clock manipulations */
 144 #define settimer(x)     (clocks.x = ++clocks.system)
 145 #define sequenceIs(x,y) (clocks.x < clocks.y)
 146
 147 /*
 148  * Linemode support states, in decreasing order of importance
 149  */
 150 #define REAL_LINEMODE   0x04
 151 #define KLUDGE_OK       0x03
 152 #define NO_AUTOKLUDGE   0x02
 153 #define KLUDGE_LINEMODE 0x01
 154 #define NO_LINEMODE     0x00
 155
 156 /*
 157  * Structures of information for each special character function.
 158  */
 159 typedef struct {
 160         unsigned char   flag;           /* the flags for this function */
 161         cc_t            val;            /* the value of the special character */
 162 } slcent, *Slcent;
 163
 164 typedef struct {
 165         slcent          defset;         /* the default settings */
 166         slcent          current;        /* the current settings */
 167         cc_t            *sptr;          /* a pointer to the char in */
 168                                         /* system data structures */
 169 } slcfun, *Slcfun;
 170
 171 #ifdef DIAGNOSTICS
 172 /*
 173  * Diagnostics capabilities
 174  */
 175 #define TD_REPORT       0x01    /* Report operations to client */
 176 #define TD_EXERCISE     0x02    /* Exercise client's implementation */
 177 #define TD_NETDATA      0x04    /* Display received data stream */
 178 #define TD_PTYDATA      0x08    /* Display data passed to pty */
 179 #define TD_OPTIONS      0x10    /* Report just telnet options */
 180 #endif /* DIAGNOSTICS */
 181
 182 /*
 183  * We keep track of each side of the option negotiation.
 184  */
 185
 186 #define MY_STATE_WILL           0x01
 187 #define MY_WANT_STATE_WILL      0x02
 188 #define MY_STATE_DO             0x04
 189 #define MY_WANT_STATE_DO        0x08
 190
 191 /*
 192  * Macros to check the current state of things
 193  */
 194
 195 #define my_state_is_do(opt)             (options[opt]&MY_STATE_DO)
 196 #define my_state_is_will(opt)           (options[opt]&MY_STATE_WILL)
 197 #define my_want_state_is_do(opt)        (options[opt]&MY_WANT_STATE_DO)
 198 #define my_want_state_is_will(opt)      (options[opt]&MY_WANT_STATE_WILL)
 199
 200 #define my_state_is_dont(opt)           (!my_state_is_do(opt))
 201 #define my_state_is_wont(opt)           (!my_state_is_will(opt))
 202 #define my_want_state_is_dont(opt)      (!my_want_state_is_do(opt))
 203 #define my_want_state_is_wont(opt)      (!my_want_state_is_will(opt))
 204
 205 #define set_my_state_do(opt)            (options[opt] |= MY_STATE_DO)
 206 #define set_my_state_will(opt)          (options[opt] |= MY_STATE_WILL)
 207 #define set_my_want_state_do(opt)       (options[opt] |= MY_WANT_STATE_DO)
 208 #define set_my_want_state_will(opt)     (options[opt] |= MY_WANT_STATE_WILL)
 209
 210 #define set_my_state_dont(opt)          (options[opt] &= ~MY_STATE_DO)
 211 #define set_my_state_wont(opt)          (options[opt] &= ~MY_STATE_WILL)
 212 #define set_my_want_state_dont(opt)     (options[opt] &= ~MY_WANT_STATE_DO)
 213 #define set_my_want_state_wont(opt)     (options[opt] &= ~MY_WANT_STATE_WILL)
 214
 215 /*
 216  * Tricky code here.  What we want to know is if the MY_STATE_WILL
 217  * and MY_WANT_STATE_WILL bits have the same value.  Since the two
 218  * bits are adjacent, a little arithmatic will show that by adding
 219  * in the lower bit, the upper bit will be set if the two bits were
 220  * different, and clear if they were the same.
 221  */
 222 #define my_will_wont_is_changing(opt) \
 223                         ((options[opt]+MY_STATE_WILL) & MY_WANT_STATE_WILL)
 224
 225 #define my_do_dont_is_changing(opt) \
 226                         ((options[opt]+MY_STATE_DO) & MY_WANT_STATE_DO)
 227
 228 /*
 229  * Make everything symetrical
 230  */
 231
 232 #define HIS_STATE_WILL                  MY_STATE_DO
 233 #define HIS_WANT_STATE_WILL             MY_WANT_STATE_DO
 234 #define HIS_STATE_DO                    MY_STATE_WILL
 235 #define HIS_WANT_STATE_DO               MY_WANT_STATE_WILL
 236
 237 #define his_state_is_do                 my_state_is_will
 238 #define his_state_is_will               my_state_is_do
 239 #define his_want_state_is_do            my_want_state_is_will
 240 #define his_want_state_is_will          my_want_state_is_do
 241
 242 #define his_state_is_dont               my_state_is_wont
 243 #define his_state_is_wont               my_state_is_dont
 244 #define his_want_state_is_dont          my_want_state_is_wont
 245 #define his_want_state_is_wont          my_want_state_is_dont
 246
 247 #define set_his_state_do                set_my_state_will
 248 #define set_his_state_will              set_my_state_do
 249 #define set_his_want_state_do           set_my_want_state_will
 250 #define set_his_want_state_will         set_my_want_state_do
 251
 252 #define set_his_state_dont              set_my_state_wont
 253 #define set_his_state_wont              set_my_state_dont
 254 #define set_his_want_state_dont         set_my_want_state_wont
 255 #define set_his_want_state_wont         set_my_want_state_dont
 256
 257 #define his_will_wont_is_changing       my_do_dont_is_changing
 258 #define his_do_dont_is_changing         my_will_wont_is_changing