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