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/crypto/telnet/telnet/externs.h,v 1.4.2.2 2002/04/13 10:59:08 markm Exp $
  35  *      $DragonFly: src/crypto/telnet/telnet/externs.h,v 1.2 2003/06/17 04:24:37 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 extern int
  97     autologin,          /* Autologin enabled */
  98     skiprc,             /* Don't process the ~/.telnetrc file */
  99     eight,              /* use eight bit mode (binary in and/or out */
 100     family,             /* address family of peer */
 101     flushout,           /* flush output */
 102     connected,          /* Are we connected to the other side? */
 103     globalmode,         /* Mode tty should be in */
 104     telnetport,         /* Are we connected to the telnet port? */
 105     localflow,          /* Flow control handled locally */
 106     restartany,         /* If flow control, restart output on any character */
 107     localchars,         /* we recognize interrupt/quit */
 108     donelclchars,       /* the user has set "localchars" */
 109     showoptions,
 110     net,                /* Network file descriptor */
 111     tin,                /* Terminal input file descriptor */
 112     tout,               /* Terminal output file descriptor */
 113     crlf,               /* Should '\r' be mapped to <CR><LF> (or <CR><NUL>)? */
 114     autoflush,          /* flush output when interrupting? */
 115     autosynch,          /* send interrupt characters with SYNCH? */
 116     SYNCHing,           /* Is the stream in telnet SYNCH mode? */
 117     donebinarytoggle,   /* the user has put us in binary */
 118     dontlecho,          /* do we suppress local echoing right now? */
 119     crmod,
 120     netdata,            /* Print out network data flow */
 121     prettydump,         /* Print "netdata" output in user readable format */
 122     termdata,           /* Print out terminal data flow */
 123     debug,              /* Debug level */
 124     doaddrlookup,       /* do a reverse lookup? */
 125     clienteof;          /* Client received EOF */
 126
 127 extern cc_t escape;     /* Escape to command mode */
 128 extern cc_t rlogin;     /* Rlogin mode escape character */
 129 #ifdef  KLUDGELINEMODE
 130 extern cc_t echoc;      /* Toggle local echoing */
 131 #endif
 132
 133 extern char
 134     *prompt;            /* Prompt for command. */
 135
 136 extern char
 137     doopt[],
 138     dont[],
 139     will[],
 140     wont[],
 141     options[],          /* All the little options */
 142     *hostname;          /* Who are we connected to? */
 143 #ifdef  ENCRYPTION
 144 extern void (*encrypt_output)(unsigned char *, int);
 145 extern int (*decrypt_input)(int);
 146 #endif  /* ENCRYPTION */
 147
 148 /*
 149  * We keep track of each side of the option negotiation.
 150  */
 151
 152 #define MY_STATE_WILL           0x01
 153 #define MY_WANT_STATE_WILL      0x02
 154 #define MY_STATE_DO             0x04
 155 #define MY_WANT_STATE_DO        0x08
 156
 157 /*
 158  * Macros to check the current state of things
 159  */
 160
 161 #define my_state_is_do(opt)             (options[opt]&MY_STATE_DO)
 162 #define my_state_is_will(opt)           (options[opt]&MY_STATE_WILL)
 163 #define my_want_state_is_do(opt)        (options[opt]&MY_WANT_STATE_DO)
 164 #define my_want_state_is_will(opt)      (options[opt]&MY_WANT_STATE_WILL)
 165
 166 #define my_state_is_dont(opt)           (!my_state_is_do(opt))
 167 #define my_state_is_wont(opt)           (!my_state_is_will(opt))
 168 #define my_want_state_is_dont(opt)      (!my_want_state_is_do(opt))
 169 #define my_want_state_is_wont(opt)      (!my_want_state_is_will(opt))
 170
 171 #define set_my_state_do(opt)            {options[opt] |= MY_STATE_DO;}
 172 #define set_my_state_will(opt)          {options[opt] |= MY_STATE_WILL;}
 173 #define set_my_want_state_do(opt)       {options[opt] |= MY_WANT_STATE_DO;}
 174 #define set_my_want_state_will(opt)     {options[opt] |= MY_WANT_STATE_WILL;}
 175
 176 #define set_my_state_dont(opt)          {options[opt] &= ~MY_STATE_DO;}
 177 #define set_my_state_wont(opt)          {options[opt] &= ~MY_STATE_WILL;}
 178 #define set_my_want_state_dont(opt)     {options[opt] &= ~MY_WANT_STATE_DO;}
 179 #define set_my_want_state_wont(opt)     {options[opt] &= ~MY_WANT_STATE_WILL;}
 180
 181 /*
 182  * Make everything symetrical
 183  */
 184
 185 #define HIS_STATE_WILL                  MY_STATE_DO
 186 #define HIS_WANT_STATE_WILL             MY_WANT_STATE_DO
 187 #define HIS_STATE_DO                    MY_STATE_WILL
 188 #define HIS_WANT_STATE_DO               MY_WANT_STATE_WILL
 189
 190 #define his_state_is_do                 my_state_is_will
 191 #define his_state_is_will               my_state_is_do
 192 #define his_want_state_is_do            my_want_state_is_will
 193 #define his_want_state_is_will          my_want_state_is_do
 194
 195 #define his_state_is_dont               my_state_is_wont
 196 #define his_state_is_wont               my_state_is_dont
 197 #define his_want_state_is_dont          my_want_state_is_wont
 198 #define his_want_state_is_wont          my_want_state_is_dont
 199
 200 #define set_his_state_do                set_my_state_will
 201 #define set_his_state_will              set_my_state_do
 202 #define set_his_want_state_do           set_my_want_state_will
 203 #define set_his_want_state_will         set_my_want_state_do
 204
 205 #define set_his_state_dont              set_my_state_wont
 206 #define set_his_state_wont              set_my_state_dont
 207 #define set_his_want_state_dont         set_my_want_state_wont
 208 #define set_his_want_state_wont         set_my_want_state_dont
 209
 210 #if     defined(USE_TERMIO)
 211 #define SIG_FUNC_RET    void
 212 #else
 213 #define SIG_FUNC_RET    int
 214 #endif
 215
 216 #ifdef  SIGINFO
 217 extern SIG_FUNC_RET
 218     ayt_status(void);
 219 #endif
 220
 221 extern FILE
 222     *NetTrace;          /* Where debugging output goes */
 223 extern unsigned char
 224     NetTraceFile[];     /* Name of file where debugging output goes */
 225 extern void
 226     SetNetTrace(char *);        /* Function to change where debugging goes */
 227
 228 extern jmp_buf
 229     peerdied,
 230     toplevel;           /* For error conditions. */
 231
 232 extern void
 233     command(int, const char *, int),
 234     Dump(char, unsigned char *, int),
 235     env_init(void),
 236     Exit(int),
 237     ExitString(const char *, int),
 238     init_network(void),
 239     init_sys(void),
 240     init_telnet(void),
 241     init_terminal(void),
 242     intp(void),
 243     optionstatus(void),
 244     printoption(const char *, int, int),
 245     printsub(char, unsigned char *, int),
 246     quit(void),
 247     sendabort(void),
 248     sendbrk(void),
 249     sendeof(void),
 250     sendsusp(void),
 251     sendnaws(void),
 252     sendayt(void),
 253     setconnmode(int),
 254     setcommandmode(void),
 255     set_escape_char(char *s),
 256     setneturg(void),
 257     sys_telnet_init(void),
 258     telnet(char *),
 259     tel_enter_binary(int),
 260     tel_leave_binary(int),
 261     TerminalFlushOutput(void),
 262     TerminalNewMode(int),
 263     TerminalRestoreState(void),
 264     TerminalSaveState(void),
 265     TerminalDefaultChars(void),
 266     TerminalSpeeds(long *, long *),
 267     tninit(void),
 268     upcase(char *),
 269     willoption(int),
 270     wontoption(int);
 271
 272 extern void
 273     send_do(int, int),
 274     send_dont(int, int),
 275     send_will(int, int),
 276     send_wont(int, int);
 277
 278 extern void
 279     lm_will(unsigned char *, int),
 280     lm_wont(unsigned char *, int),
 281     lm_do(unsigned char *, int),
 282     lm_dont(unsigned char *, int),
 283     lm_mode(unsigned char *, int, int);
 284
 285 extern void
 286     slc_init(void),
 287     slcstate(void),
 288     slc_mode_export(void),
 289     slc_mode_import(int),
 290     slc_import(int),
 291     slc_export(void),
 292     slc(unsigned char *, int),
 293     slc_check(void),
 294     slc_start_reply(void),
 295     slc_add_reply(unsigned char, unsigned char, cc_t),
 296     slc_end_reply(void);
 297 extern int
 298     getconnmode(void),
 299     opt_welldefined(const char *),
 300     NetClose(int),
 301     netflush(void),
 302     process_rings(int, int, int, int, int, int),
 303     rlogin_susp(void),
 304     SetSockOpt(int, int, int, int),
 305     slc_update(void),
 306     stilloob(void),
 307     telrcv(void),
 308     TerminalRead(char *, int),
 309     TerminalWrite(char *, int),
 310     TerminalAutoFlush(void),
 311     TerminalWindowSize(long *, long *),
 312     TerminalSpecialChars(int),
 313     tn(int, char **),
 314     ttyflush(int);
 315
 316 extern void
 317     env_opt(unsigned char *, int),
 318     env_opt_start(void),
 319     env_opt_start_info(void),
 320     env_opt_add(unsigned char *),
 321     env_opt_end(int);
 322
 323 extern unsigned char
 324     *env_default(int, int),
 325     *env_getvalue(const unsigned char *);
 326
 327 extern int
 328     get_status(char *),
 329     dosynch(char *);
 330
 331 extern cc_t
 332     *tcval(int);
 333
 334 #ifndef USE_TERMIO
 335
 336 extern struct   tchars ntc;
 337 extern struct   ltchars nltc;
 338 extern struct   sgttyb nttyb;
 339
 340 # define termEofChar            ntc.t_eofc
 341 # define termEraseChar          nttyb.sg_erase
 342 # define termFlushChar          nltc.t_flushc
 343 # define termIntChar            ntc.t_intrc
 344 # define termKillChar           nttyb.sg_kill
 345 # define termLiteralNextChar    nltc.t_lnextc
 346 # define termQuitChar           ntc.t_quitc
 347 # define termSuspChar           nltc.t_suspc
 348 # define termRprntChar          nltc.t_rprntc
 349 # define termWerasChar          nltc.t_werasc
 350 # define termStartChar          ntc.t_startc
 351 # define termStopChar           ntc.t_stopc
 352 # define termForw1Char          ntc.t_brkc
 353 extern cc_t termForw2Char;
 354 extern cc_t termAytChar;
 355
 356 # define termEofCharp           (cc_t *)&ntc.t_eofc
 357 # define termEraseCharp         (cc_t *)&nttyb.sg_erase
 358 # define termFlushCharp         (cc_t *)&nltc.t_flushc
 359 # define termIntCharp           (cc_t *)&ntc.t_intrc
 360 # define termKillCharp          (cc_t *)&nttyb.sg_kill
 361 # define termLiteralNextCharp   (cc_t *)&nltc.t_lnextc
 362 # define termQuitCharp          (cc_t *)&ntc.t_quitc
 363 # define termSuspCharp          (cc_t *)&nltc.t_suspc
 364 # define termRprntCharp         (cc_t *)&nltc.t_rprntc
 365 # define termWerasCharp         (cc_t *)&nltc.t_werasc
 366 # define termStartCharp         (cc_t *)&ntc.t_startc
 367 # define termStopCharp          (cc_t *)&ntc.t_stopc
 368 # define termForw1Charp         (cc_t *)&ntc.t_brkc
 369 # define termForw2Charp         (cc_t *)&termForw2Char
 370 # define termAytCharp           (cc_t *)&termAytChar
 371
 372 # else
 373
 374 extern struct   termio new_tc;
 375
 376 # define termEofChar            new_tc.c_cc[VEOF]
 377 # define termEraseChar          new_tc.c_cc[VERASE]
 378 # define termIntChar            new_tc.c_cc[VINTR]
 379 # define termKillChar           new_tc.c_cc[VKILL]
 380 # define termQuitChar           new_tc.c_cc[VQUIT]
 381
 382 # ifndef        VSUSP
 383 extern cc_t termSuspChar;
 384 # else
 385 #  define termSuspChar          new_tc.c_cc[VSUSP]
 386 # endif
 387 # if    defined(VFLUSHO) && !defined(VDISCARD)
 388 #  define VDISCARD VFLUSHO
 389 # endif
 390 # ifndef        VDISCARD
 391 extern cc_t termFlushChar;
 392 # else
 393 #  define termFlushChar         new_tc.c_cc[VDISCARD]
 394 # endif
 395 # ifndef VWERASE
 396 extern cc_t termWerasChar;
 397 # else
 398 #  define termWerasChar         new_tc.c_cc[VWERASE]
 399 # endif
 400 # ifndef        VREPRINT
 401 extern cc_t termRprntChar;
 402 # else
 403 #  define termRprntChar         new_tc.c_cc[VREPRINT]
 404 # endif
 405 # ifndef        VLNEXT
 406 extern cc_t termLiteralNextChar;
 407 # else
 408 #  define termLiteralNextChar   new_tc.c_cc[VLNEXT]
 409 # endif
 410 # ifndef        VSTART
 411 extern cc_t termStartChar;
 412 # else
 413 #  define termStartChar         new_tc.c_cc[VSTART]
 414 # endif
 415 # ifndef        VSTOP
 416 extern cc_t termStopChar;
 417 # else
 418 #  define termStopChar          new_tc.c_cc[VSTOP]
 419 # endif
 420 # ifndef        VEOL
 421 extern cc_t termForw1Char;
 422 # else
 423 #  define termForw1Char         new_tc.c_cc[VEOL]
 424 # endif
 425 # ifndef        VEOL2
 426 extern cc_t termForw2Char;
 427 # else
 428 #  define termForw2Char         new_tc.c_cc[VEOL]
 429 # endif
 430 # ifndef        VSTATUS
 431 extern cc_t termAytChar;
 432 #else
 433 #  define termAytChar           new_tc.c_cc[VSTATUS]
 434 #endif
 435
 436 # if defined(__STDC__)
 437 #  define termEofCharp          &termEofChar
 438 #  define termEraseCharp        &termEraseChar
 439 #  define termIntCharp          &termIntChar
 440 #  define termKillCharp         &termKillChar
 441 #  define termQuitCharp         &termQuitChar
 442 #  define termSuspCharp         &termSuspChar
 443 #  define termFlushCharp        &termFlushChar
 444 #  define termWerasCharp        &termWerasChar
 445 #  define termRprntCharp        &termRprntChar
 446 #  define termLiteralNextCharp  &termLiteralNextChar
 447 #  define termStartCharp        &termStartChar
 448 #  define termStopCharp         &termStopChar
 449 #  define termForw1Charp        &termForw1Char
 450 #  define termForw2Charp        &termForw2Char
 451 #  define termAytCharp          &termAytChar
 452 # else
 453         /* Work around a compiler bug */
 454 #  define termEofCharp          0
 455 #  define termEraseCharp        0
 456 #  define termIntCharp          0
 457 #  define termKillCharp         0
 458 #  define termQuitCharp         0
 459 #  define termSuspCharp         0
 460 #  define termFlushCharp        0
 461 #  define termWerasCharp        0
 462 #  define termRprntCharp        0
 463 #  define termLiteralNextCharp  0
 464 #  define termStartCharp        0
 465 #  define termStopCharp         0
 466 #  define termForw1Charp        0
 467 #  define termForw2Charp        0
 468 #  define termAytCharp          0
 469 # endif
 470 #endif
 471
 472
 473 /* Ring buffer structures which are shared */
 474
 475 extern Ring
 476     netoring,
 477     netiring,
 478     ttyoring,
 479     ttyiring;
 480
 481 extern void
 482     xmitAO(void),
 483     xmitEC(void),
 484     xmitEL(void);