src/bin/network/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. 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  *      @(#)externs.h   8.3 (Berkeley) 5/30/95
  34  *      $FreeBSD: src/contrib/telnet/telnet/externs.h,v 1.10 2003/05/11 18:17:00 markm Exp $
  35  */
  36
  37 #ifndef BSD
  38 # define BSD 43
  39 #endif
  40
  41 /*
  42  * ucb stdio.h defines BSD as something weird
  43  */
  44 #if defined(sun) && defined(__svr4__)
  45 #define BSD 43
  46 #endif
  47
  48 #ifndef USE_TERMIO
  49 # if BSD > 43 || defined(SYSV_TERMIO)
  50 #  define USE_TERMIO
  51 # endif
  52 #endif
  53
  54 #include <stdio.h>
  55 #include <setjmp.h>
  56 #include <sys/ioctl.h>
  57 #include <errno.h>
  58 #ifdef  USE_TERMIO
  59 # ifndef        VINTR
  60 #  include <termios.h>
  61 # endif
  62 # define termio termios
  63 #endif
  64 #if defined(NO_CC_T) || !defined(USE_TERMIO)
  65 # if !defined(USE_TERMIO)
  66 typedef char cc_t;
  67 # else
  68 typedef unsigned char cc_t;
  69 # endif
  70 #endif
  71
  72 #include <string.h>
  73
  74 #if defined(IPSEC)
  75 #include <netinet6/ipsec.h>
  76 #if defined(IPSEC_POLICY_IPSEC)
  77 extern char *ipsec_policy_in;
  78 extern char *ipsec_policy_out;
  79 #endif
  80 #endif
  81
  82 #ifndef _POSIX_VDISABLE
  83 # ifdef sun
  84 #  include <sys/param.h>        /* pick up VDISABLE definition, mayby */
  85 # endif
  86 # ifdef VDISABLE
  87 #  define _POSIX_VDISABLE VDISABLE
  88 # else
  89 #  define _POSIX_VDISABLE ((cc_t)'\377')
  90 # endif
  91 #endif
  92
  93 #define SUBBUFSIZE      256
  94
  95 #if     !defined(P)
  96 # ifdef __STDC__
  97 #  define       P(x)    x
  98 # else
  99 #  define       P(x)    ()
 100 # endif
 101 #endif
 102
 103 extern int
 104     autologin,          /* Autologin enabled */
 105     skiprc,             /* Don't process the ~/.telnetrc file */
 106     eight,              /* use eight bit mode (binary in and/or out */
 107     family,             /* address family of peer */
 108     flushout,           /* flush output */
 109     connected,          /* Are we connected to the other side? */
 110     globalmode,         /* Mode tty should be in */
 111     telnetport,         /* Are we connected to the telnet port? */
 112     localflow,          /* Flow control handled locally */
 113     restartany,         /* If flow control, restart output on any character */
 114     localchars,         /* we recognize interrupt/quit */
 115     donelclchars,       /* the user has set "localchars" */
 116     showoptions,
 117     net,                /* Network file descriptor */
 118     tin,                /* Terminal input file descriptor */
 119     tout,               /* Terminal output file descriptor */
 120     crlf,               /* Should '\r' be mapped to <CR><LF> (or <CR><NUL>)? */
 121     autoflush,          /* flush output when interrupting? */
 122     autosynch,          /* send interrupt characters with SYNCH? */
 123     SYNCHing,           /* Is the stream in telnet SYNCH mode? */
 124     donebinarytoggle,   /* the user has put us in binary */
 125     dontlecho,          /* do we suppress local echoing right now? */
 126     crmod,
 127     netdata,            /* Print out network data flow */
 128     prettydump,         /* Print "netdata" output in user readable format */
 129     termdata,           /* Print out terminal data flow */
 130     telnet_debug,       /* Debug level */
 131     doaddrlookup,       /* do a reverse lookup? */
 132     clienteof;          /* Client received EOF */
 133
 134 extern cc_t escape;     /* Escape to command mode */
 135 extern cc_t rlogin;     /* Rlogin mode escape character */
 136 #ifdef  KLUDGELINEMODE
 137 extern cc_t echoc;      /* Toggle local echoing */
 138 #endif
 139
 140 extern char
 141     *prompt;            /* Prompt for command. */
 142
 143 extern char
 144     doopt[],
 145     dont[],
 146     will[],
 147     wont[],
 148     options[],          /* All the little options */
 149     *hostname;          /* Who are we connected to? */
 150 #ifdef  ENCRYPTION
 151 extern void (*encrypt_output)(unsigned char *, int);
 152 extern int (*decrypt_input)(int);
 153 #endif  /* ENCRYPTION */
 154
 155 /*
 156  * We keep track of each side of the option negotiation.
 157  */
 158
 159 #define MY_STATE_WILL           0x01
 160 #define MY_WANT_STATE_WILL      0x02
 161 #define MY_STATE_DO             0x04
 162 #define MY_WANT_STATE_DO        0x08
 163
 164 /*
 165  * Macros to check the current state of things
 166  */
 167
 168 #define my_state_is_do(opt)             (options[opt]&MY_STATE_DO)
 169 #define my_state_is_will(opt)           (options[opt]&MY_STATE_WILL)
 170 #define my_want_state_is_do(opt)        (options[opt]&MY_WANT_STATE_DO)
 171 #define my_want_state_is_will(opt)      (options[opt]&MY_WANT_STATE_WILL)
 172
 173 #define my_state_is_dont(opt)           (!my_state_is_do(opt))
 174 #define my_state_is_wont(opt)           (!my_state_is_will(opt))
 175 #define my_want_state_is_dont(opt)      (!my_want_state_is_do(opt))
 176 #define my_want_state_is_wont(opt)      (!my_want_state_is_will(opt))
 177
 178 #define set_my_state_do(opt)            {options[opt] |= MY_STATE_DO;}
 179 #define set_my_state_will(opt)          {options[opt] |= MY_STATE_WILL;}
 180 #define set_my_want_state_do(opt)       {options[opt] |= MY_WANT_STATE_DO;}
 181 #define set_my_want_state_will(opt)     {options[opt] |= MY_WANT_STATE_WILL;}
 182
 183 #define set_my_state_dont(opt)          {options[opt] &= ~MY_STATE_DO;}
 184 #define set_my_state_wont(opt)          {options[opt] &= ~MY_STATE_WILL;}
 185 #define set_my_want_state_dont(opt)     {options[opt] &= ~MY_WANT_STATE_DO;}
 186 #define set_my_want_state_wont(opt)     {options[opt] &= ~MY_WANT_STATE_WILL;}
 187
 188 /*
 189  * Make everything symetrical
 190  */
 191
 192 #define HIS_STATE_WILL                  MY_STATE_DO
 193 #define HIS_WANT_STATE_WILL             MY_WANT_STATE_DO
 194 #define HIS_STATE_DO                    MY_STATE_WILL
 195 #define HIS_WANT_STATE_DO               MY_WANT_STATE_WILL
 196
 197 #define his_state_is_do                 my_state_is_will
 198 #define his_state_is_will               my_state_is_do
 199 #define his_want_state_is_do            my_want_state_is_will
 200 #define his_want_state_is_will          my_want_state_is_do
 201
 202 #define his_state_is_dont               my_state_is_wont
 203 #define his_state_is_wont               my_state_is_dont
 204 #define his_want_state_is_dont          my_want_state_is_wont
 205 #define his_want_state_is_wont          my_want_state_is_dont
 206
 207 #define set_his_state_do                set_my_state_will
 208 #define set_his_state_will              set_my_state_do
 209 #define set_his_want_state_do           set_my_want_state_will
 210 #define set_his_want_state_will         set_my_want_state_do
 211
 212 #define set_his_state_dont              set_my_state_wont
 213 #define set_his_state_wont              set_my_state_dont
 214 #define set_his_want_state_dont         set_my_want_state_wont
 215 #define set_his_want_state_wont         set_my_want_state_dont
 216
 217 #if     defined(USE_TERMIO)
 218 #define SIG_FUNC_RET    void
 219 #else
 220 #define SIG_FUNC_RET    int
 221 #endif
 222
 223 #ifdef  SIGINFO
 224 extern SIG_FUNC_RET
 225     ayt_status(void);
 226 #endif
 227
 228 extern FILE
 229     *NetTrace;          /* Where debugging output goes */
 230 extern unsigned char
 231     NetTraceFile[];     /* Name of file where debugging output goes */
 232 extern void
 233     SetNetTrace(char *);        /* Function to change where debugging goes */
 234
 235 extern jmp_buf
 236     peerdied,
 237     toplevel;           /* For error conditions. */
 238
 239 extern void
 240     command(int, const char *, int),
 241     Dump(char, unsigned char *, int),
 242     env_init(void),
 243     Exit(int),
 244     ExitString(const char *, int),
 245     init_network(void),
 246     init_sys(void),
 247     init_telnet(void),
 248     init_terminal(void),
 249     intp(void),
 250     optionstatus(void),
 251     printoption(const char *, int, int),
 252     printsub(char, unsigned char *, int),
 253     quit(void),
 254     sendabort(void),
 255     sendbrk(void),
 256     sendeof(void),
 257     sendsusp(void),
 258     sendnaws(void),
 259     sendayt(void),
 260     setconnmode(int),
 261     setcommandmode(void),
 262     set_escape_char(char *s),
 263     setneturg(void),
 264     sys_telnet_init(void),
 265     telnet(char *),
 266     tel_enter_binary(int),
 267     tel_leave_binary(int),
 268     TerminalFlushOutput(void),
 269     TerminalNewMode(int),
 270     TerminalRestoreState(void),
 271     TerminalSaveState(void),
 272     TerminalDefaultChars(void),
 273     TerminalSpeeds(long *, long *),
 274     tninit(void),
 275     upcase(char *),
 276     willoption(int),
 277     wontoption(int);
 278
 279 extern void
 280     send_do(int, int),
 281     send_dont(int, int),
 282     send_will(int, int),
 283     send_wont(int, int);
 284
 285 extern void
 286     lm_will(unsigned char *, int),
 287     lm_wont(unsigned char *, int),
 288     lm_do(unsigned char *, int),
 289     lm_dont(unsigned char *, int),
 290     lm_mode(unsigned char *, int, int);
 291
 292 extern void
 293     slc_init(void),
 294     slcstate(void),
 295     slc_mode_export(void),
 296     slc_mode_import(int),
 297     slc_import(int),
 298     slc_export(void),
 299     slc(unsigned char *, int),
 300     slc_check(void),
 301     slc_start_reply(void),
 302     slc_add_reply(unsigned char, unsigned char, cc_t),
 303     slc_end_reply(void);
 304 extern int
 305     getconnmode(void),
 306     opt_welldefined(const char *),
 307     NetClose(int),
 308     netflush(void),
 309     process_rings(int, int, int, int, int, int),
 310     rlogin_susp(void),
 311     SetSockOpt(int, int, int, int),
 312     slc_update(void),
 313     stilloob(void),
 314     telrcv(void),
 315     TerminalRead(char *, int),
 316     TerminalWrite(char *, int),
 317     TerminalAutoFlush(void),
 318     TerminalWindowSize(long *, long *),
 319     TerminalSpecialChars(int),
 320     tn(int, char **),
 321     ttyflush(int);
 322
 323 extern void
 324     env_opt(unsigned char *, int),
 325     env_opt_start(void),
 326     env_opt_start_info(void),
 327     env_opt_add(unsigned char *),
 328     env_opt_end(int);
 329
 330 extern unsigned char
 331     *env_default(int, int),
 332     *env_getvalue(const unsigned char *);
 333
 334 extern int
 335     get_status(char *),
 336     dosynch(char *);
 337
 338 extern cc_t
 339     *tcval(int);
 340
 341 #ifndef USE_TERMIO
 342
 343 extern struct   tchars ntc;
 344 extern struct   ltchars nltc;
 345 extern struct   sgttyb nttyb;
 346
 347 # define termEofChar            ntc.t_eofc
 348 # define termEraseChar          nttyb.sg_erase
 349 # define termFlushChar          nltc.t_flushc
 350 # define termIntChar            ntc.t_intrc
 351 # define termKillChar           nttyb.sg_kill
 352 # define termLiteralNextChar    nltc.t_lnextc
 353 # define termQuitChar           ntc.t_quitc
 354 # define termSuspChar           nltc.t_suspc
 355 # define termRprntChar          nltc.t_rprntc
 356 # define termWerasChar          nltc.t_werasc
 357 # define termStartChar          ntc.t_startc
 358 # define termStopChar           ntc.t_stopc
 359 # define termForw1Char          ntc.t_brkc
 360 extern cc_t termForw2Char;
 361 extern cc_t termAytChar;
 362
 363 # define termEofCharp           (cc_t *)&ntc.t_eofc
 364 # define termEraseCharp         (cc_t *)&nttyb.sg_erase
 365 # define termFlushCharp         (cc_t *)&nltc.t_flushc
 366 # define termIntCharp           (cc_t *)&ntc.t_intrc
 367 # define termKillCharp          (cc_t *)&nttyb.sg_kill
 368 # define termLiteralNextCharp   (cc_t *)&nltc.t_lnextc
 369 # define termQuitCharp          (cc_t *)&ntc.t_quitc
 370 # define termSuspCharp          (cc_t *)&nltc.t_suspc
 371 # define termRprntCharp         (cc_t *)&nltc.t_rprntc
 372 # define termWerasCharp         (cc_t *)&nltc.t_werasc
 373 # define termStartCharp         (cc_t *)&ntc.t_startc
 374 # define termStopCharp          (cc_t *)&ntc.t_stopc
 375 # define termForw1Charp         (cc_t *)&ntc.t_brkc
 376 # define termForw2Charp         (cc_t *)&termForw2Char
 377 # define termAytCharp           (cc_t *)&termAytChar
 378
 379 # else
 380
 381 extern struct   termio new_tc;
 382
 383 # define termEofChar            new_tc.c_cc[VEOF]
 384 # define termEraseChar          new_tc.c_cc[VERASE]
 385 # define termIntChar            new_tc.c_cc[VINTR]
 386 # define termKillChar           new_tc.c_cc[VKILL]
 387 # define termQuitChar           new_tc.c_cc[VQUIT]
 388
 389 # ifndef        VSUSP
 390 extern cc_t termSuspChar;
 391 # else
 392 #  define termSuspChar          new_tc.c_cc[VSUSP]
 393 # endif
 394 # if    defined(VFLUSHO) && !defined(VDISCARD)
 395 #  define VDISCARD VFLUSHO
 396 # endif
 397 # ifndef        VDISCARD
 398 extern cc_t termFlushChar;
 399 # else
 400 #  define termFlushChar         new_tc.c_cc[VDISCARD]
 401 # endif
 402 # ifndef VWERASE
 403 extern cc_t termWerasChar;
 404 # else
 405 #  define termWerasChar         new_tc.c_cc[VWERASE]
 406 # endif
 407 # ifndef        VREPRINT
 408 extern cc_t termRprntChar;
 409 # else
 410 #  define termRprntChar         new_tc.c_cc[VREPRINT]
 411 # endif
 412 # ifndef        VLNEXT
 413 extern cc_t termLiteralNextChar;
 414 # else
 415 #  define termLiteralNextChar   new_tc.c_cc[VLNEXT]
 416 # endif
 417 # ifndef        VSTART
 418 extern cc_t termStartChar;
 419 # else
 420 #  define termStartChar         new_tc.c_cc[VSTART]
 421 # endif
 422 # ifndef        VSTOP
 423 extern cc_t termStopChar;
 424 # else
 425 #  define termStopChar          new_tc.c_cc[VSTOP]
 426 # endif
 427 # ifndef        VEOL
 428 extern cc_t termForw1Char;
 429 # else
 430 #  define termForw1Char         new_tc.c_cc[VEOL]
 431 # endif
 432 # ifndef        VEOL2
 433 extern cc_t termForw2Char;
 434 # else
 435 #  define termForw2Char         new_tc.c_cc[VEOL]
 436 # endif
 437 # ifndef        VSTATUS
 438 extern cc_t termAytChar;
 439 #else
 440 #  define termAytChar           new_tc.c_cc[VSTATUS]
 441 #endif
 442
 443 # if defined(__STDC__)
 444 #  define termEofCharp          &termEofChar
 445 #  define termEraseCharp        &termEraseChar
 446 #  define termIntCharp          &termIntChar
 447 #  define termKillCharp         &termKillChar
 448 #  define termQuitCharp         &termQuitChar
 449 #  define termSuspCharp         &termSuspChar
 450 #  define termFlushCharp        &termFlushChar
 451 #  define termWerasCharp        &termWerasChar
 452 #  define termRprntCharp        &termRprntChar
 453 #  define termLiteralNextCharp  &termLiteralNextChar
 454 #  define termStartCharp        &termStartChar
 455 #  define termStopCharp         &termStopChar
 456 #  define termForw1Charp        &termForw1Char
 457 #  define termForw2Charp        &termForw2Char
 458 #  define termAytCharp          &termAytChar
 459 # else
 460         /* Work around a compiler bug */
 461 #  define termEofCharp          0
 462 #  define termEraseCharp        0
 463 #  define termIntCharp          0
 464 #  define termKillCharp         0
 465 #  define termQuitCharp         0
 466 #  define termSuspCharp         0
 467 #  define termFlushCharp        0
 468 #  define termWerasCharp        0
 469 #  define termRprntCharp        0
 470 #  define termLiteralNextCharp  0
 471 #  define termStartCharp        0
 472 #  define termStopCharp         0
 473 #  define termForw1Charp        0
 474 #  define termForw2Charp        0
 475 #  define termAytCharp          0
 476 # endif
 477 #endif
 478
 479
 480 /* Ring buffer structures which are shared */
 481
 482 extern Ring
 483     netoring,
 484     netiring,
 485     ttyoring,
 486     ttyiring;
 487
 488 extern void
 489     xmitAO(void),
 490     xmitEC(void),
 491     xmitEL(void);