telnetd.tproj/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  */
  35
  36 /*
  37  * Telnet server defines
  38  */
  39 #include <sys/types.h>
  40 #include <sys/param.h>
  41
  42 #ifndef BSD
  43 # define        BSD 43
  44 #endif
  45
  46 #if     defined(CRAY) && !defined(LINEMODE)
  47 # define SYSV_TERMIO
  48 # define LINEMODE
  49 # define KLUDGELINEMODE
  50 # define DIAGNOSTICS
  51 # if defined(UNICOS50) && !defined(UNICOS5)
  52 #  define UNICOS5
  53 # endif
  54 # if !defined(UNICOS5)
  55 #  define BFTPDAEMON
  56 #  define HAS_IP_TOS
  57 # endif
  58 #endif /* CRAY */
  59 #if defined(UNICOS5) && !defined(NO_SETSID)
  60 # define NO_SETSID
  61 #endif
  62
  63 #if defined(PRINTOPTIONS) && defined(DIAGNOSTICS)
  64 #define TELOPTS
  65 #define TELCMDS
  66 #define SLC_NAMES
  67 #endif
  68
  69 #if     defined(SYSV_TERMIO) && !defined(USE_TERMIO)
  70 # define        USE_TERMIO
  71 #endif
  72
  73 #include <sys/socket.h>
  74 #ifndef CRAY
  75 #include <sys/wait.h>
  76 #endif  /* CRAY */
  77 #include <fcntl.h>
  78 #include <sys/file.h>
  79 #include <sys/stat.h>
  80 #include <sys/time.h>
  81 #ifndef FILIO_H
  82 #include <sys/ioctl.h>
  83 #else
  84 #include <sys/filio.h>
  85 #endif
  86
  87 #include <netinet/in.h>
  88
  89 #include <arpa/telnet.h>
  90
  91 #include <stdio.h>
  92 #ifdef  __STDC__
  93 #include <stdlib.h>
  94 #endif
  95 #include <signal.h>
  96 #include <errno.h>
  97 #include <netdb.h>
  98 #include <syslog.h>
  99 #ifndef LOG_DAEMON
 100 #define LOG_DAEMON      0
 101 #endif
 102 #ifndef LOG_ODELAY
 103 #define LOG_ODELAY      0
 104 #endif
 105 #include <ctype.h>
 106 #ifndef NO_STRING_H
 107 #include <string.h>
 108 #else
 109 #include <strings.h>
 110 #endif
 111
 112 #ifndef USE_TERMIO
 113 #include <sgtty.h>
 114 #else
 115 # ifdef SYSV_TERMIO
 116 # include <termio.h>
 117 # else
 118 # include <termios.h>
 119 # endif
 120 #endif
 121 #if !defined(USE_TERMIO) || defined(NO_CC_T)
 122 typedef unsigned char cc_t;
 123 #endif
 124
 125 #ifdef  __STDC__
 126 #include <unistd.h>
 127 #endif
 128
 129 #ifndef _POSIX_VDISABLE
 130 # ifdef VDISABLE
 131 #  define _POSIX_VDISABLE VDISABLE
 132 # else
 133 #  define _POSIX_VDISABLE ((unsigned char)'\377')
 134 # endif
 135 #endif
 136
 137
 138 #ifdef  CRAY
 139 # ifdef CRAY1
 140 # include <sys/pty.h>
 141 #  ifndef FD_ZERO
 142 # include <sys/select.h>
 143 #  endif /* FD_ZERO */
 144 # endif /* CRAY1 */
 145
 146 #include <memory.h>
 147 #endif  /* CRAY */
 148
 149 #ifdef __hpux
 150 #include <sys/ptyio.h>
 151 #endif
 152
 153 #if     !defined(TIOCSCTTY) && defined(TCSETCTTY)
 154 # define        TIOCSCTTY TCSETCTTY
 155 #endif
 156
 157 #ifndef FD_SET
 158 #ifndef HAVE_fd_set
 159 typedef struct fd_set { int fds_bits[1]; } fd_set;
 160 #endif
 161
 162 #define FD_SET(n, p)    ((p)->fds_bits[0] |= (1<<(n)))
 163 #define FD_CLR(n, p)    ((p)->fds_bits[0] &= ~(1<<(n)))
 164 #define FD_ISSET(n, p)  ((p)->fds_bits[0] & (1<<(n)))
 165 #define FD_ZERO(p)      ((p)->fds_bits[0] = 0)
 166 #endif  /* FD_SET */
 167
 168 /*
 169  * I/O data buffers defines
 170  */
 171 #define NETSLOP 64
 172 #ifdef CRAY
 173 #undef BUFSIZ
 174 #define BUFSIZ  2048
 175 #endif
 176
 177 #define NIACCUM(c)      {   *netip++ = c; \
 178                             ncc++; \
 179                         }
 180
 181 /* clock manipulations */
 182 #define settimer(x)     (clocks.x = ++clocks.system)
 183 #define sequenceIs(x,y) (clocks.x < clocks.y)
 184
 185 /*
 186  * Linemode support states, in decreasing order of importance
 187  */
 188 #define REAL_LINEMODE   0x04
 189 #define KLUDGE_OK       0x03
 190 #define NO_AUTOKLUDGE   0x02
 191 #define KLUDGE_LINEMODE 0x01
 192 #define NO_LINEMODE     0x00
 193
 194 /*
 195  * Structures of information for each special character function.
 196  */
 197 typedef struct {
 198         unsigned char   flag;           /* the flags for this function */
 199         cc_t            val;            /* the value of the special character */
 200 } slcent, *Slcent;
 201
 202 typedef struct {
 203         slcent          defset;         /* the default settings */
 204         slcent          current;        /* the current settings */
 205         cc_t            *sptr;          /* a pointer to the char in */
 206                                         /* system data structures */
 207 } slcfun, *Slcfun;
 208
 209 #ifdef DIAGNOSTICS
 210 /*
 211  * Diagnostics capabilities
 212  */
 213 #define TD_REPORT       0x01    /* Report operations to client */
 214 #define TD_EXERCISE     0x02    /* Exercise client's implementation */
 215 #define TD_NETDATA      0x04    /* Display received data stream */
 216 #define TD_PTYDATA      0x08    /* Display data passed to pty */
 217 #define TD_OPTIONS      0x10    /* Report just telnet options */
 218 #endif /* DIAGNOSTICS */
 219
 220 /*
 221  * We keep track of each side of the option negotiation.
 222  */
 223
 224 #define MY_STATE_WILL           0x01
 225 #define MY_WANT_STATE_WILL      0x02
 226 #define MY_STATE_DO             0x04
 227 #define MY_WANT_STATE_DO        0x08
 228
 229 /*
 230  * Macros to check the current state of things
 231  */
 232
 233 #define my_state_is_do(opt)             (options[opt]&MY_STATE_DO)
 234 #define my_state_is_will(opt)           (options[opt]&MY_STATE_WILL)
 235 #define my_want_state_is_do(opt)        (options[opt]&MY_WANT_STATE_DO)
 236 #define my_want_state_is_will(opt)      (options[opt]&MY_WANT_STATE_WILL)
 237
 238 #define my_state_is_dont(opt)           (!my_state_is_do(opt))
 239 #define my_state_is_wont(opt)           (!my_state_is_will(opt))
 240 #define my_want_state_is_dont(opt)      (!my_want_state_is_do(opt))
 241 #define my_want_state_is_wont(opt)      (!my_want_state_is_will(opt))
 242
 243 #define set_my_state_do(opt)            (options[opt] |= MY_STATE_DO)
 244 #define set_my_state_will(opt)          (options[opt] |= MY_STATE_WILL)
 245 #define set_my_want_state_do(opt)       (options[opt] |= MY_WANT_STATE_DO)
 246 #define set_my_want_state_will(opt)     (options[opt] |= MY_WANT_STATE_WILL)
 247
 248 #define set_my_state_dont(opt)          (options[opt] &= ~MY_STATE_DO)
 249 #define set_my_state_wont(opt)          (options[opt] &= ~MY_STATE_WILL)
 250 #define set_my_want_state_dont(opt)     (options[opt] &= ~MY_WANT_STATE_DO)
 251 #define set_my_want_state_wont(opt)     (options[opt] &= ~MY_WANT_STATE_WILL)
 252
 253 /*
 254  * Tricky code here.  What we want to know is if the MY_STATE_WILL
 255  * and MY_WANT_STATE_WILL bits have the same value.  Since the two
 256  * bits are adjacent, a little arithmatic will show that by adding
 257  * in the lower bit, the upper bit will be set if the two bits were
 258  * different, and clear if they were the same.
 259  */
 260 #define my_will_wont_is_changing(opt) \
 261                         ((options[opt]+MY_STATE_WILL) & MY_WANT_STATE_WILL)
 262
 263 #define my_do_dont_is_changing(opt) \
 264                         ((options[opt]+MY_STATE_DO) & MY_WANT_STATE_DO)
 265
 266 /*
 267  * Make everything symetrical
 268  */
 269
 270 #define HIS_STATE_WILL                  MY_STATE_DO
 271 #define HIS_WANT_STATE_WILL             MY_WANT_STATE_DO
 272 #define HIS_STATE_DO                    MY_STATE_WILL
 273 #define HIS_WANT_STATE_DO               MY_WANT_STATE_WILL
 274
 275 #define his_state_is_do                 my_state_is_will
 276 #define his_state_is_will               my_state_is_do
 277 #define his_want_state_is_do            my_want_state_is_will
 278 #define his_want_state_is_will          my_want_state_is_do
 279
 280 #define his_state_is_dont               my_state_is_wont
 281 #define his_state_is_wont               my_state_is_dont
 282 #define his_want_state_is_dont          my_want_state_is_wont
 283 #define his_want_state_is_wont          my_want_state_is_dont
 284
 285 #define set_his_state_do                set_my_state_will
 286 #define set_his_state_will              set_my_state_do
 287 #define set_his_want_state_do           set_my_want_state_will
 288 #define set_his_want_state_will         set_my_want_state_do
 289
 290 #define set_his_state_dont              set_my_state_wont
 291 #define set_his_state_wont              set_my_state_dont
 292 #define set_his_want_state_dont         set_my_want_state_wont
 293 #define set_his_want_state_wont         set_my_want_state_dont
 294
 295 #define his_will_wont_is_changing       my_do_dont_is_changing
 296 #define his_do_dont_is_changing         my_will_wont_is_changing