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. 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/usr.bin/telnet/externs.h,v 1.5.2.2 2002/04/13 11:07:13 markm Exp $
  35  *      $DragonFly: src/usr.bin/telnet/externs.h,v 1.2 2003/06/17 06:29:32 dillon Exp $
  36  */
  37
  38 #ifndef BSD
  39 # define BSD 43
  40 #endif
  41
  42 /*
  43  * ucb stdio.h defines BSD as something weird
  44  */
  45 #if defined(sun) && defined(__svr4__)
  46 #define BSD 43
  47 #endif
  48
  49 #ifndef USE_TERMIO
  50 # if BSD > 43 || defined(SYSV_TERMIO)
  51 #  define USE_TERMIO
  52 # endif
  53 #endif
  54
  55 #include <stdio.h>
  56 #include <setjmp.h>
  57 #include <sys/ioctl.h>
  58 #include <errno.h>
  59 #ifdef  USE_TERMIO
  60 # ifndef        VINTR
  61 #  include <sys/termios.h>
  62 # endif
  63 # define termio termios
  64 #endif
  65 #if defined(NO_CC_T) || !defined(USE_TERMIO)
  66 # if !defined(USE_TERMIO)
  67 typedef char cc_t;
  68 # else
  69 typedef unsigned char cc_t;
  70 # endif
  71 #endif
  72
  73 #include <string.h>
  74
  75 #if defined(IPSEC)
  76 #include <netinet6/ipsec.h>
  77 #if defined(IPSEC_POLICY_IPSEC)
  78 extern char *ipsec_policy_in;
  79 extern char *ipsec_policy_out;
  80 #endif
  81 #endif
  82
  83 #ifndef _POSIX_VDISABLE
  84 # ifdef sun
  85 #  include <sys/param.h>        /* pick up VDISABLE definition, mayby */
  86 # endif
  87 # ifdef VDISABLE
  88 #  define _POSIX_VDISABLE VDISABLE
  89 # else
  90 #  define _POSIX_VDISABLE ((cc_t)'\377')
  91 # endif
  92 #endif
  93
  94 #define SUBBUFSIZE      256
  95
  96 #if     !defined(P)
  97 # ifdef __STDC__
  98 #  define       P(x)    x
  99 # else
 100 #  define       P(x)    ()
 101 # endif
 102 #endif
 103
 104 extern int
 105     autologin,          /* Autologin enabled */
 106     skiprc,             /* Don't process the ~/.telnetrc file */
 107     eight,              /* use eight bit mode (binary in and/or out */
 108     family,             /* address family of peer */
 109     flushout,           /* flush output */
 110     connected,          /* Are we connected to the other side? */
 111     globalmode,         /* Mode tty should be in */
 112     telnetport,         /* Are we connected to the telnet port? */
 113     localflow,          /* Flow control handled locally */
 114     restartany,         /* If flow control, restart output on any character */
 115     localchars,         /* we recognize interrupt/quit */
 116     donelclchars,       /* the user has set "localchars" */
 117     showoptions,
 118     net,                /* Network file descriptor */
 119     tin,                /* Terminal input file descriptor */
 120     tout,               /* Terminal output file descriptor */
 121     crlf,               /* Should '\r' be mapped to <CR><LF> (or <CR><NUL>)? */
 122     autoflush,          /* flush output when interrupting? */
 123     autosynch,          /* send interrupt characters with SYNCH? */
 124     SYNCHing,           /* Is the stream in telnet SYNCH mode? */
 125     donebinarytoggle,   /* the user has put us in binary */
 126     dontlecho,          /* do we suppress local echoing right now? */
 127     crmod,
 128     netdata,            /* Print out network data flow */
 129     prettydump,         /* Print "netdata" output in user readable format */
 130     termdata,           /* Print out terminal data flow */
 131     debug,              /* Debug level */
 132     doaddrlookup,       /* do a reverse lookup? */
 133     clienteof;          /* Client received EOF */
 134
 135 extern cc_t escape;     /* Escape to command mode */
 136 extern cc_t rlogin;     /* Rlogin mode escape character */
 137 #ifdef  KLUDGELINEMODE
 138 extern cc_t echoc;      /* Toggle local echoing */
 139 #endif
 140
 141 extern char
 142     *prompt;            /* Prompt for command. */
 143
 144 extern char
 145     doopt[],
 146     dont[],
 147     will[],
 148     wont[],
 149     options[],          /* All the little options */
 150     *hostname;          /* Who are we connected to? */
 151
 152 /*
 153  * We keep track of each side of the option negotiation.
 154  */
 155
 156 #define MY_STATE_WILL           0x01
 157 #define MY_WANT_STATE_WILL      0x02
 158 #define MY_STATE_DO             0x04
 159 #define MY_WANT_STATE_DO        0x08
 160
 161 /*
 162  * Macros to check the current state of things
 163  */
 164
 165 #define my_state_is_do(opt)             (options[opt]&MY_STATE_DO)
 166 #define my_state_is_will(opt)           (options[opt]&MY_STATE_WILL)
 167 #define my_want_state_is_do(opt)        (options[opt]&MY_WANT_STATE_DO)
 168 #define my_want_state_is_will(opt)      (options[opt]&MY_WANT_STATE_WILL)
 169
 170 #define my_state_is_dont(opt)           (!my_state_is_do(opt))
 171 #define my_state_is_wont(opt)           (!my_state_is_will(opt))
 172 #define my_want_state_is_dont(opt)      (!my_want_state_is_do(opt))
 173 #define my_want_state_is_wont(opt)      (!my_want_state_is_will(opt))
 174
 175 #define set_my_state_do(opt)            {options[opt] |= MY_STATE_DO;}
 176 #define set_my_state_will(opt)          {options[opt] |= MY_STATE_WILL;}
 177 #define set_my_want_state_do(opt)       {options[opt] |= MY_WANT_STATE_DO;}
 178 #define set_my_want_state_will(opt)     {options[opt] |= MY_WANT_STATE_WILL;}
 179
 180 #define set_my_state_dont(opt)          {options[opt] &= ~MY_STATE_DO;}
 181 #define set_my_state_wont(opt)          {options[opt] &= ~MY_STATE_WILL;}
 182 #define set_my_want_state_dont(opt)     {options[opt] &= ~MY_WANT_STATE_DO;}
 183 #define set_my_want_state_wont(opt)     {options[opt] &= ~MY_WANT_STATE_WILL;}
 184
 185 /*
 186  * Make everything symetrical
 187  */
 188
 189 #define HIS_STATE_WILL                  MY_STATE_DO
 190 #define HIS_WANT_STATE_WILL             MY_WANT_STATE_DO
 191 #define HIS_STATE_DO                    MY_STATE_WILL
 192 #define HIS_WANT_STATE_DO               MY_WANT_STATE_WILL
 193
 194 #define his_state_is_do                 my_state_is_will
 195 #define his_state_is_will               my_state_is_do
 196 #define his_want_state_is_do            my_want_state_is_will
 197 #define his_want_state_is_will          my_want_state_is_do
 198
 199 #define his_state_is_dont               my_state_is_wont
 200 #define his_state_is_wont               my_state_is_dont
 201 #define his_want_state_is_dont          my_want_state_is_wont
 202 #define his_want_state_is_wont          my_want_state_is_dont
 203
 204 #define set_his_state_do                set_my_state_will
 205 #define set_his_state_will              set_my_state_do
 206 #define set_his_want_state_do           set_my_want_state_will
 207 #define set_his_want_state_will         set_my_want_state_do
 208
 209 #define set_his_state_dont              set_my_state_wont
 210 #define set_his_state_wont              set_my_state_dont
 211 #define set_his_want_state_dont         set_my_want_state_wont
 212 #define set_his_want_state_wont         set_my_want_state_dont
 213
 214 #if     defined(USE_TERMIO)
 215 #define SIG_FUNC_RET    void
 216 #else
 217 #define SIG_FUNC_RET    int
 218 #endif
 219
 220 #ifdef  SIGINFO
 221 extern SIG_FUNC_RET
 222     ayt_status(void);
 223 #endif
 224
 225 extern FILE
 226     *NetTrace;          /* Where debugging output goes */
 227 extern unsigned char
 228     NetTraceFile[];     /* Name of file where debugging output goes */
 229 extern void
 230     SetNetTrace(char *);        /* Function to change where debugging goes */
 231
 232 extern jmp_buf
 233     peerdied,
 234     toplevel;           /* For error conditions. */
 235
 236 extern void
 237     command(int, const char *, int),
 238     Dump(char, unsigned char *, int),
 239     env_init(void),
 240     Exit(int),
 241     ExitString(const char *, int),
 242     init_network(void),
 243     init_sys(void),
 244     init_telnet(void),
 245     init_terminal(void),
 246     intp(void),
 247     optionstatus(void),
 248     printoption(const char *, int, int),
 249     printsub(char, unsigned char *, int),
 250     quit(void),
 251     sendabort(void),
 252     sendbrk(void),
 253     sendeof(void),
 254     sendsusp(void),
 255     sendnaws(void),
 256     sendayt(void),
 257     setconnmode(int),
 258     setcommandmode(void),
 259     set_escape_char(char *s),
 260     setneturg(void),
 261     sys_telnet_init(void),
 262     telnet(char *),
 263     tel_enter_binary(int),
 264     tel_leave_binary(int),
 265     TerminalFlushOutput(void),
 266     TerminalNewMode(int),
 267     TerminalRestoreState(void),
 268     TerminalSaveState(void),
 269     TerminalDefaultChars(void),
 270     TerminalSpeeds(long *, long *),
 271     tninit(void),
 272     upcase(char *),
 273     willoption(int),
 274     wontoption(int);
 275
 276 extern void
 277     send_do(int, int),
 278     send_dont(int, int),
 279     send_will(int, int),
 280     send_wont(int, int);
 281
 282 extern void
 283     lm_will(unsigned char *, int),
 284     lm_wont(unsigned char *, int),
 285     lm_do(unsigned char *, int),
 286     lm_dont(unsigned char *, int),
 287     lm_mode(unsigned char *, int, int);
 288
 289 extern void
 290     slc_init(void),
 291     slcstate(void),
 292     slc_mode_export(void),
 293     slc_mode_import(int),
 294     slc_import(int),
 295     slc_export(void),
 296     slc(unsigned char *, int),
 297     slc_check(void),
 298     slc_start_reply(void),
 299     slc_add_reply(unsigned char, unsigned char, cc_t),
 300     slc_end_reply(void);
 301 extern int
 302     getconnmode(void),
 303     opt_welldefined(const char *),
 304     NetClose(int),
 305     netflush(void),
 306     process_rings(int, int, int, int, int, int),
 307     rlogin_susp(void),
 308     SetSockOpt(int, int, int, int),
 309     slc_update(void),
 310     stilloob(void),
 311     telrcv(void),
 312     TerminalRead(char *, int),
 313     TerminalWrite(char *, int),
 314     TerminalAutoFlush(void),
 315     TerminalWindowSize(long *, long *),
 316     TerminalSpecialChars(int),
 317     tn(int, char **),
 318     ttyflush(int);
 319
 320 extern void
 321     env_opt(unsigned char *, int),
 322     env_opt_start(void),
 323     env_opt_start_info(void),
 324     env_opt_add(unsigned char *),
 325     env_opt_end(int);
 326
 327 extern unsigned char
 328     *env_default(int, int),
 329     *env_getvalue(const unsigned char *);
 330
 331 extern int
 332     get_status(char *),
 333     dosynch(char *);
 334
 335 extern cc_t
 336     *tcval(int);
 337
 338 #ifndef USE_TERMIO
 339
 340 extern struct   tchars ntc;
 341 extern struct   ltchars nltc;
 342 extern struct   sgttyb nttyb;
 343
 344 # define termEofChar            ntc.t_eofc
 345 # define termEraseChar          nttyb.sg_erase
 346 # define termFlushChar          nltc.t_flushc
 347 # define termIntChar            ntc.t_intrc
 348 # define termKillChar           nttyb.sg_kill
 349 # define termLiteralNextChar    nltc.t_lnextc
 350 # define termQuitChar           ntc.t_quitc
 351 # define termSuspChar           nltc.t_suspc
 352 # define termRprntChar          nltc.t_rprntc
 353 # define termWerasChar          nltc.t_werasc
 354 # define termStartChar          ntc.t_startc
 355 # define termStopChar           ntc.t_stopc
 356 # define termForw1Char          ntc.t_brkc
 357 extern cc_t termForw2Char;
 358 extern cc_t termAytChar;
 359
 360 # define termEofCharp           (cc_t *)&ntc.t_eofc
 361 # define termEraseCharp         (cc_t *)&nttyb.sg_erase
 362 # define termFlushCharp         (cc_t *)&nltc.t_flushc
 363 # define termIntCharp           (cc_t *)&ntc.t_intrc
 364 # define termKillCharp          (cc_t *)&nttyb.sg_kill
 365 # define termLiteralNextCharp   (cc_t *)&nltc.t_lnextc
 366 # define termQuitCharp          (cc_t *)&ntc.t_quitc
 367 # define termSuspCharp          (cc_t *)&nltc.t_suspc
 368 # define termRprntCharp         (cc_t *)&nltc.t_rprntc
 369 # define termWerasCharp         (cc_t *)&nltc.t_werasc
 370 # define termStartCharp         (cc_t *)&ntc.t_startc
 371 # define termStopCharp          (cc_t *)&ntc.t_stopc
 372 # define termForw1Charp         (cc_t *)&ntc.t_brkc
 373 # define termForw2Charp         (cc_t *)&termForw2Char
 374 # define termAytCharp           (cc_t *)&termAytChar
 375
 376 # else
 377
 378 extern struct   termio new_tc;
 379
 380 # define termEofChar            new_tc.c_cc[VEOF]
 381 # define termEraseChar          new_tc.c_cc[VERASE]
 382 # define termIntChar            new_tc.c_cc[VINTR]
 383 # define termKillChar           new_tc.c_cc[VKILL]
 384 # define termQuitChar           new_tc.c_cc[VQUIT]
 385
 386 # ifndef        VSUSP
 387 extern cc_t termSuspChar;
 388 # else
 389 #  define termSuspChar          new_tc.c_cc[VSUSP]
 390 # endif
 391 # if    defined(VFLUSHO) && !defined(VDISCARD)
 392 #  define VDISCARD VFLUSHO
 393 # endif
 394 # ifndef        VDISCARD
 395 extern cc_t termFlushChar;
 396 # else
 397 #  define termFlushChar         new_tc.c_cc[VDISCARD]
 398 # endif
 399 # ifndef VWERASE
 400 extern cc_t termWerasChar;
 401 # else
 402 #  define termWerasChar         new_tc.c_cc[VWERASE]
 403 # endif
 404 # ifndef        VREPRINT
 405 extern cc_t termRprntChar;
 406 # else
 407 #  define termRprntChar         new_tc.c_cc[VREPRINT]
 408 # endif
 409 # ifndef        VLNEXT
 410 extern cc_t termLiteralNextChar;
 411 # else
 412 #  define termLiteralNextChar   new_tc.c_cc[VLNEXT]
 413 # endif
 414 # ifndef        VSTART
 415 extern cc_t termStartChar;
 416 # else
 417 #  define termStartChar         new_tc.c_cc[VSTART]
 418 # endif
 419 # ifndef        VSTOP
 420 extern cc_t termStopChar;
 421 # else
 422 #  define termStopChar          new_tc.c_cc[VSTOP]
 423 # endif
 424 # ifndef        VEOL
 425 extern cc_t termForw1Char;
 426 # else
 427 #  define termForw1Char         new_tc.c_cc[VEOL]
 428 # endif
 429 # ifndef        VEOL2
 430 extern cc_t termForw2Char;
 431 # else
 432 #  define termForw2Char         new_tc.c_cc[VEOL]
 433 # endif
 434 # ifndef        VSTATUS
 435 extern cc_t termAytChar;
 436 #else
 437 #  define termAytChar           new_tc.c_cc[VSTATUS]
 438 #endif
 439
 440 # if defined(__STDC__)
 441 #  define termEofCharp          &termEofChar
 442 #  define termEraseCharp        &termEraseChar
 443 #  define termIntCharp          &termIntChar
 444 #  define termKillCharp         &termKillChar
 445 #  define termQuitCharp         &termQuitChar
 446 #  define termSuspCharp         &termSuspChar
 447 #  define termFlushCharp        &termFlushChar
 448 #  define termWerasCharp        &termWerasChar
 449 #  define termRprntCharp        &termRprntChar
 450 #  define termLiteralNextCharp  &termLiteralNextChar
 451 #  define termStartCharp        &termStartChar
 452 #  define termStopCharp         &termStopChar
 453 #  define termForw1Charp        &termForw1Char
 454 #  define termForw2Charp        &termForw2Char
 455 #  define termAytCharp          &termAytChar
 456 # else
 457         /* Work around a compiler bug */
 458 #  define termEofCharp          0
 459 #  define termEraseCharp        0
 460 #  define termIntCharp          0
 461 #  define termKillCharp         0
 462 #  define termQuitCharp         0
 463 #  define termSuspCharp         0
 464 #  define termFlushCharp        0
 465 #  define termWerasCharp        0
 466 #  define termRprntCharp        0
 467 #  define termLiteralNextCharp  0
 468 #  define termStartCharp        0
 469 #  define termStopCharp         0
 470 #  define termForw1Charp        0
 471 #  define termForw2Charp        0
 472 #  define termAytCharp          0
 473 # endif
 474 #endif
 475
 476
 477 /* Ring buffer structures which are shared */
 478
 479 extern Ring
 480     netoring,
 481     netiring,
 482     ttyoring,
 483     ttyiring;
 484
 485 extern void
 486     xmitAO(void),
 487     xmitEC(void),
 488     xmitEL(void);