usr.bin/telnet/externs.h

   1 /*
   2  * Copyright (c) 1988, 1990, 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  *      @(#)externs.h   8.3 (Berkeley) 5/30/95
  30  *      $FreeBSD: src/crypto/telnet/telnet/externs.h,v 1.4.2.2 2002/04/13 10:59:08 markm Exp $
  31  */
  32
  33 #ifndef BSD
  34 # define BSD 43
  35 #endif
  36
  37 /*
  38  * ucb stdio.h defines BSD as something weird
  39  */
  40 #if defined(sun) && defined(__svr4__)
  41 #define BSD 43
  42 #endif
  43
  44 #ifndef USE_TERMIO
  45 # if BSD > 43 || defined(SYSV_TERMIO)
  46 #  define USE_TERMIO
  47 # endif
  48 #endif
  49
  50 #include <stdio.h>
  51 #include <setjmp.h>
  52 #include <sys/ioctl.h>
  53 #include <errno.h>
  54 #ifdef  USE_TERMIO
  55 # ifndef        VINTR
  56 #  include <termios.h>
  57 # endif
  58 # define termio termios
  59 #endif
  60 #if defined(NO_CC_T) || !defined(USE_TERMIO)
  61 # if !defined(USE_TERMIO)
  62 typedef char cc_t;
  63 # else
  64 typedef unsigned char cc_t;
  65 # endif
  66 #endif
  67
  68 #include <string.h>
  69
  70 #ifndef _POSIX_VDISABLE
  71 # ifdef sun
  72 #  include <sys/param.h>        /* pick up VDISABLE definition, mayby */
  73 # endif
  74 # ifdef VDISABLE
  75 #  define _POSIX_VDISABLE VDISABLE
  76 # else
  77 #  define _POSIX_VDISABLE ((cc_t)'\377')
  78 # endif
  79 #endif
  80
  81 #define SUBBUFSIZE      256
  82
  83 extern int
  84     autologin,          /* Autologin enabled */
  85     skiprc,             /* Don't process the ~/.telnetrc file */
  86     eight,              /* use eight bit mode (binary in and/or out */
  87     family,             /* address family of peer */
  88     flushout,           /* flush output */
  89     connected,          /* Are we connected to the other side? */
  90     globalmode,         /* Mode tty should be in */
  91     telnetport,         /* Are we connected to the telnet port? */
  92     localflow,          /* Flow control handled locally */
  93     restartany,         /* If flow control, restart output on any character */
  94     localchars,         /* we recognize interrupt/quit */
  95     donelclchars,       /* the user has set "localchars" */
  96     showoptions,
  97     net,                /* Network file descriptor */
  98     tin,                /* Terminal input file descriptor */
  99     tout,               /* Terminal output file descriptor */
 100     crlf,               /* Should '\r' be mapped to <CR><LF> (or <CR><NUL>)? */
 101     autoflush,          /* flush output when interrupting? */
 102     autosynch,          /* send interrupt characters with SYNCH? */
 103     SYNCHing,           /* Is the stream in telnet SYNCH mode? */
 104     donebinarytoggle,   /* the user has put us in binary */
 105     dontlecho,          /* do we suppress local echoing right now? */
 106     crmod,
 107     netdata,            /* Print out network data flow */
 108     prettydump,         /* Print "netdata" output in user readable format */
 109     termdata,           /* Print out terminal data flow */
 110     telnet_debug,       /* Debug level */
 111     doaddrlookup,       /* do a reverse lookup? */
 112     clienteof;          /* Client received EOF */
 113
 114 extern cc_t escape;     /* Escape to command mode */
 115 extern cc_t rlogin;     /* Rlogin mode escape character */
 116 #ifdef  KLUDGELINEMODE
 117 extern cc_t echoc;      /* Toggle local echoing */
 118 #endif
 119
 120 extern char
 121     *prompt;            /* Prompt for command. */
 122
 123 extern char
 124     doopt[],
 125     dont[],
 126     will[],
 127     wont[],
 128     options[],          /* All the little options */
 129     *hostname;          /* Who are we connected to? */
 130 #ifdef  ENCRYPTION
 131 extern void (*encrypt_output)(unsigned char *, int);
 132 extern int (*decrypt_input)(int);
 133 #endif  /* ENCRYPTION */
 134
 135 /*
 136  * We keep track of each side of the option negotiation.
 137  */
 138
 139 #define MY_STATE_WILL           0x01
 140 #define MY_WANT_STATE_WILL      0x02
 141 #define MY_STATE_DO             0x04
 142 #define MY_WANT_STATE_DO        0x08
 143
 144 /*
 145  * Macros to check the current state of things
 146  */
 147
 148 #define my_state_is_do(opt)             (options[opt]&MY_STATE_DO)
 149 #define my_state_is_will(opt)           (options[opt]&MY_STATE_WILL)
 150 #define my_want_state_is_do(opt)        (options[opt]&MY_WANT_STATE_DO)
 151 #define my_want_state_is_will(opt)      (options[opt]&MY_WANT_STATE_WILL)
 152
 153 #define my_state_is_dont(opt)           (!my_state_is_do(opt))
 154 #define my_state_is_wont(opt)           (!my_state_is_will(opt))
 155 #define my_want_state_is_dont(opt)      (!my_want_state_is_do(opt))
 156 #define my_want_state_is_wont(opt)      (!my_want_state_is_will(opt))
 157
 158 #define set_my_state_do(opt)            {options[opt] |= MY_STATE_DO;}
 159 #define set_my_state_will(opt)          {options[opt] |= MY_STATE_WILL;}
 160 #define set_my_want_state_do(opt)       {options[opt] |= MY_WANT_STATE_DO;}
 161 #define set_my_want_state_will(opt)     {options[opt] |= MY_WANT_STATE_WILL;}
 162
 163 #define set_my_state_dont(opt)          {options[opt] &= ~MY_STATE_DO;}
 164 #define set_my_state_wont(opt)          {options[opt] &= ~MY_STATE_WILL;}
 165 #define set_my_want_state_dont(opt)     {options[opt] &= ~MY_WANT_STATE_DO;}
 166 #define set_my_want_state_wont(opt)     {options[opt] &= ~MY_WANT_STATE_WILL;}
 167
 168 /*
 169  * Make everything symetrical
 170  */
 171
 172 #define HIS_STATE_WILL                  MY_STATE_DO
 173 #define HIS_WANT_STATE_WILL             MY_WANT_STATE_DO
 174 #define HIS_STATE_DO                    MY_STATE_WILL
 175 #define HIS_WANT_STATE_DO               MY_WANT_STATE_WILL
 176
 177 #define his_state_is_do                 my_state_is_will
 178 #define his_state_is_will               my_state_is_do
 179 #define his_want_state_is_do            my_want_state_is_will
 180 #define his_want_state_is_will          my_want_state_is_do
 181
 182 #define his_state_is_dont               my_state_is_wont
 183 #define his_state_is_wont               my_state_is_dont
 184 #define his_want_state_is_dont          my_want_state_is_wont
 185 #define his_want_state_is_wont          my_want_state_is_dont
 186
 187 #define set_his_state_do                set_my_state_will
 188 #define set_his_state_will              set_my_state_do
 189 #define set_his_want_state_do           set_my_want_state_will
 190 #define set_his_want_state_will         set_my_want_state_do
 191
 192 #define set_his_state_dont              set_my_state_wont
 193 #define set_his_state_wont              set_my_state_dont
 194 #define set_his_want_state_dont         set_my_want_state_wont
 195 #define set_his_want_state_wont         set_my_want_state_dont
 196
 197 #if     defined(USE_TERMIO)
 198 #define SIG_FUNC_RET    void
 199 #else
 200 #define SIG_FUNC_RET    int
 201 #endif
 202
 203 #ifdef  SIGINFO
 204 extern SIG_FUNC_RET
 205     ayt_status(void);
 206 #endif
 207
 208 extern FILE
 209     *NetTrace;          /* Where debugging output goes */
 210 extern unsigned char
 211     NetTraceFile[];     /* Name of file where debugging output goes */
 212 extern void
 213     SetNetTrace(char *);        /* Function to change where debugging goes */
 214
 215 extern jmp_buf
 216     peerdied,
 217     toplevel;           /* For error conditions. */
 218
 219 extern void
 220     command(int, const char *, int),
 221     Dump(char, unsigned char *, int),
 222     env_init(void),
 223     Exit(int) __dead2,
 224     ExitString(const char *, int) __dead2,
 225     init_network(void),
 226     init_sys(void),
 227     init_telnet(void),
 228     init_terminal(void),
 229     intp(void),
 230     optionstatus(void),
 231     printoption(const char *, int, int),
 232     printsub(char, unsigned char *, int),
 233     quit(void) __dead2,
 234     sendabort(void),
 235     sendbrk(void),
 236     sendeof(void),
 237     sendsusp(void),
 238     sendnaws(void),
 239     sendayt(void),
 240     setconnmode(int),
 241     setcommandmode(void),
 242     set_escape_char(char *s),
 243     setneturg(void),
 244     sys_telnet_init(void),
 245     telnet(char *),
 246     tel_enter_binary(int),
 247     tel_leave_binary(int),
 248     TerminalFlushOutput(void),
 249     TerminalNewMode(int),
 250     TerminalRestoreState(void),
 251     TerminalSaveState(void),
 252     TerminalDefaultChars(void),
 253     TerminalSpeeds(long *, long *),
 254     tninit(void),
 255     upcase(char *),
 256     willoption(int),
 257     wontoption(int);
 258
 259 extern void
 260     send_do(int, int),
 261     send_dont(int, int),
 262     send_will(int, int),
 263     send_wont(int, int);
 264
 265 extern void
 266     lm_will(unsigned char *, int),
 267     lm_wont(unsigned char *, int),
 268     lm_do(unsigned char *, int),
 269     lm_dont(unsigned char *, int),
 270     lm_mode(unsigned char *, int, int);
 271
 272 extern void
 273     slc_init(void),
 274     slcstate(void),
 275     slc_mode_export(void),
 276     slc_mode_import(int),
 277     slc_import(int),
 278     slc_export(void),
 279     slc(unsigned char *, int),
 280     slc_check(void),
 281     slc_start_reply(void),
 282     slc_add_reply(unsigned char, unsigned char, cc_t),
 283     slc_end_reply(void);
 284 extern int
 285     getconnmode(void),
 286     opt_welldefined(const char *),
 287     NetClose(int),
 288     netflush(void),
 289     process_rings(int, int, int, int, int, int),
 290     rlogin_susp(void),
 291     SetSockOpt(int, int, int, int),
 292     slc_update(void),
 293     stilloob(void),
 294     telrcv(void),
 295     TerminalRead(char *, int),
 296     TerminalWrite(char *, int),
 297     TerminalAutoFlush(void),
 298     TerminalWindowSize(long *, long *),
 299     TerminalSpecialChars(int),
 300     tn(int, char **),
 301     ttyflush(int);
 302
 303 extern void
 304     env_opt(unsigned char *, int),
 305     env_opt_start(void),
 306     env_opt_start_info(void),
 307     env_opt_add(unsigned char *),
 308     env_opt_end(int);
 309
 310 extern unsigned char
 311     *env_default(int, int),
 312     *env_getvalue(const unsigned char *);
 313
 314 extern int
 315     get_status(char *),
 316     dosynch(char *);
 317
 318 extern cc_t
 319     *tcval(int);
 320
 321 #ifndef USE_TERMIO
 322
 323 extern struct   tchars ntc;
 324 extern struct   ltchars nltc;
 325 extern struct   sgttyb nttyb;
 326
 327 # define termEofChar            ntc.t_eofc
 328 # define termEraseChar          nttyb.sg_erase
 329 # define termFlushChar          nltc.t_flushc
 330 # define termIntChar            ntc.t_intrc
 331 # define termKillChar           nttyb.sg_kill
 332 # define termLiteralNextChar    nltc.t_lnextc
 333 # define termQuitChar           ntc.t_quitc
 334 # define termSuspChar           nltc.t_suspc
 335 # define termRprntChar          nltc.t_rprntc
 336 # define termWerasChar          nltc.t_werasc
 337 # define termStartChar          ntc.t_startc
 338 # define termStopChar           ntc.t_stopc
 339 # define termForw1Char          ntc.t_brkc
 340 extern cc_t termForw2Char;
 341 extern cc_t termAytChar;
 342
 343 # define termEofCharp           (cc_t *)&ntc.t_eofc
 344 # define termEraseCharp         (cc_t *)&nttyb.sg_erase
 345 # define termFlushCharp         (cc_t *)&nltc.t_flushc
 346 # define termIntCharp           (cc_t *)&ntc.t_intrc
 347 # define termKillCharp          (cc_t *)&nttyb.sg_kill
 348 # define termLiteralNextCharp   (cc_t *)&nltc.t_lnextc
 349 # define termQuitCharp          (cc_t *)&ntc.t_quitc
 350 # define termSuspCharp          (cc_t *)&nltc.t_suspc
 351 # define termRprntCharp         (cc_t *)&nltc.t_rprntc
 352 # define termWerasCharp         (cc_t *)&nltc.t_werasc
 353 # define termStartCharp         (cc_t *)&ntc.t_startc
 354 # define termStopCharp          (cc_t *)&ntc.t_stopc
 355 # define termForw1Charp         (cc_t *)&ntc.t_brkc
 356 # define termForw2Charp         (cc_t *)&termForw2Char
 357 # define termAytCharp           (cc_t *)&termAytChar
 358
 359 # else
 360
 361 extern struct   termio new_tc;
 362
 363 # define termEofChar            new_tc.c_cc[VEOF]
 364 # define termEraseChar          new_tc.c_cc[VERASE]
 365 # define termIntChar            new_tc.c_cc[VINTR]
 366 # define termKillChar           new_tc.c_cc[VKILL]
 367 # define termQuitChar           new_tc.c_cc[VQUIT]
 368
 369 # ifndef        VSUSP
 370 extern cc_t termSuspChar;
 371 # else
 372 #  define termSuspChar          new_tc.c_cc[VSUSP]
 373 # endif
 374 # if    defined(VFLUSHO) && !defined(VDISCARD)
 375 #  define VDISCARD VFLUSHO
 376 # endif
 377 # ifndef        VDISCARD
 378 extern cc_t termFlushChar;
 379 # else
 380 #  define termFlushChar         new_tc.c_cc[VDISCARD]
 381 # endif
 382 # ifndef VWERASE
 383 extern cc_t termWerasChar;
 384 # else
 385 #  define termWerasChar         new_tc.c_cc[VWERASE]
 386 # endif
 387 # ifndef        VREPRINT
 388 extern cc_t termRprntChar;
 389 # else
 390 #  define termRprntChar         new_tc.c_cc[VREPRINT]
 391 # endif
 392 # ifndef        VLNEXT
 393 extern cc_t termLiteralNextChar;
 394 # else
 395 #  define termLiteralNextChar   new_tc.c_cc[VLNEXT]
 396 # endif
 397 # ifndef        VSTART
 398 extern cc_t termStartChar;
 399 # else
 400 #  define termStartChar         new_tc.c_cc[VSTART]
 401 # endif
 402 # ifndef        VSTOP
 403 extern cc_t termStopChar;
 404 # else
 405 #  define termStopChar          new_tc.c_cc[VSTOP]
 406 # endif
 407 # ifndef        VEOL
 408 extern cc_t termForw1Char;
 409 # else
 410 #  define termForw1Char         new_tc.c_cc[VEOL]
 411 # endif
 412 # ifndef        VEOL2
 413 extern cc_t termForw2Char;
 414 # else
 415 #  define termForw2Char         new_tc.c_cc[VEOL]
 416 # endif
 417 # ifndef        VSTATUS
 418 extern cc_t termAytChar;
 419 #else
 420 #  define termAytChar           new_tc.c_cc[VSTATUS]
 421 #endif
 422
 423 # if defined(__STDC__)
 424 #  define termEofCharp          &termEofChar
 425 #  define termEraseCharp        &termEraseChar
 426 #  define termIntCharp          &termIntChar
 427 #  define termKillCharp         &termKillChar
 428 #  define termQuitCharp         &termQuitChar
 429 #  define termSuspCharp         &termSuspChar
 430 #  define termFlushCharp        &termFlushChar
 431 #  define termWerasCharp        &termWerasChar
 432 #  define termRprntCharp        &termRprntChar
 433 #  define termLiteralNextCharp  &termLiteralNextChar
 434 #  define termStartCharp        &termStartChar
 435 #  define termStopCharp         &termStopChar
 436 #  define termForw1Charp        &termForw1Char
 437 #  define termForw2Charp        &termForw2Char
 438 #  define termAytCharp          &termAytChar
 439 # else
 440         /* Work around a compiler bug */
 441 #  define termEofCharp          0
 442 #  define termEraseCharp        0
 443 #  define termIntCharp          0
 444 #  define termKillCharp         0
 445 #  define termQuitCharp         0
 446 #  define termSuspCharp         0
 447 #  define termFlushCharp        0
 448 #  define termWerasCharp        0
 449 #  define termRprntCharp        0
 450 #  define termLiteralNextCharp  0
 451 #  define termStartCharp        0
 452 #  define termStopCharp         0
 453 #  define termForw1Charp        0
 454 #  define termForw2Charp        0
 455 #  define termAytCharp          0
 456 # endif
 457 #endif
 458
 459
 460 /* Ring buffer structures which are shared */
 461
 462 extern Ring
 463     netoring,
 464     netiring,
 465     ttyoring,
 466     ttyiring;
 467
 468 extern void
 469     xmitAO(void),
 470     xmitEC(void),
 471     xmitEL(void);