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 * $FreeBSD$ 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 <netipsec/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 extern unsigned char 235 ComPortBaudRate[]; /* Baud rate of the remote end */ 236 extern void 237 DoBaudRate(char *); /* Function to set the baud rate of the remote end */ 238 239 extern jmp_buf 240 toplevel; /* For error conditions. */ 241 242 extern void 243 command(int, const char *, int), 244 Dump(char, unsigned char *, int), 245 env_init(void), 246 Exit(int), 247 ExitString(const char *, int), 248 init_network(void), 249 init_sys(void), 250 init_telnet(void), 251 init_terminal(void), 252 intp(void), 253 optionstatus(void), 254 printoption(const char *, int, int), 255 printsub(char, unsigned char *, int), 256 quit(void), 257 sendabort(void), 258 sendbrk(void), 259 sendeof(void), 260 sendsusp(void), 261 sendnaws(void), 262 sendayt(void), 263 setconnmode(int), 264 setcommandmode(void), 265 set_escape_char(char *s), 266 setneturg(void), 267 sys_telnet_init(void), 268 telnet(char *), 269 tel_enter_binary(int), 270 tel_leave_binary(int), 271 TerminalFlushOutput(void), 272 TerminalNewMode(int), 273 TerminalRestoreState(void), 274 TerminalSaveState(void), 275 TerminalDefaultChars(void), 276 TerminalSpeeds(long *, long *), 277 tninit(void), 278 upcase(char *), 279 willoption(int), 280 wontoption(int); 281 282 extern void 283 send_do(int, int), 284 send_dont(int, int), 285 send_will(int, int), 286 send_wont(int, int); 287 288 extern void 289 lm_will(unsigned char *, int), 290 lm_wont(unsigned char *, int), 291 lm_do(unsigned char *, int), 292 lm_dont(unsigned char *, int), 293 lm_mode(unsigned char *, int, int); 294 295 extern void 296 slc_init(void), 297 slcstate(void), 298 slc_mode_export(void), 299 slc_mode_import(int), 300 slc_import(int), 301 slc_export(void), 302 slc(unsigned char *, int), 303 slc_check(void), 304 slc_start_reply(void), 305 slc_add_reply(unsigned char, unsigned char, cc_t), 306 slc_end_reply(void); 307 extern int 308 getconnmode(void), 309 opt_welldefined(const char *), 310 NetClose(int), 311 netflush(void), 312 process_rings(int, int, int, int, int, int), 313 rlogin_susp(void), 314 SetSockOpt(int, int, int, int), 315 slc_update(void), 316 stilloob(void), 317 telrcv(void), 318 TerminalRead(char *, int), 319 TerminalWrite(char *, int), 320 TerminalAutoFlush(void), 321 TerminalWindowSize(long *, long *), 322 TerminalSpecialChars(int), 323 tn(int, char **), 324 ttyflush(int); 325 326 extern void 327 env_opt(unsigned char *, int), 328 env_opt_start(void), 329 env_opt_start_info(void), 330 env_opt_add(unsigned char *), 331 env_opt_end(int); 332 333 extern unsigned char 334 *env_default(int, int), 335 *env_getvalue(const unsigned char *); 336 337 extern int 338 get_status(char *), 339 dosynch(char *); 340 341 extern cc_t 342 *tcval(int); 343 344 #ifndef USE_TERMIO 345 346 extern struct tchars ntc; 347 extern struct ltchars nltc; 348 extern struct sgttyb nttyb; 349 350 # define termEofChar ntc.t_eofc 351 # define termEraseChar nttyb.sg_erase 352 # define termFlushChar nltc.t_flushc 353 # define termIntChar ntc.t_intrc 354 # define termKillChar nttyb.sg_kill 355 # define termLiteralNextChar nltc.t_lnextc 356 # define termQuitChar ntc.t_quitc 357 # define termSuspChar nltc.t_suspc 358 # define termRprntChar nltc.t_rprntc 359 # define termWerasChar nltc.t_werasc 360 # define termStartChar ntc.t_startc 361 # define termStopChar ntc.t_stopc 362 # define termForw1Char ntc.t_brkc 363 extern cc_t termForw2Char; 364 extern cc_t termAytChar; 365 366 # define termEofCharp (cc_t *)&ntc.t_eofc 367 # define termEraseCharp (cc_t *)&nttyb.sg_erase 368 # define termFlushCharp (cc_t *)&nltc.t_flushc 369 # define termIntCharp (cc_t *)&ntc.t_intrc 370 # define termKillCharp (cc_t *)&nttyb.sg_kill 371 # define termLiteralNextCharp (cc_t *)&nltc.t_lnextc 372 # define termQuitCharp (cc_t *)&ntc.t_quitc 373 # define termSuspCharp (cc_t *)&nltc.t_suspc 374 # define termRprntCharp (cc_t *)&nltc.t_rprntc 375 # define termWerasCharp (cc_t *)&nltc.t_werasc 376 # define termStartCharp (cc_t *)&ntc.t_startc 377 # define termStopCharp (cc_t *)&ntc.t_stopc 378 # define termForw1Charp (cc_t *)&ntc.t_brkc 379 # define termForw2Charp (cc_t *)&termForw2Char 380 # define termAytCharp (cc_t *)&termAytChar 381 382 # else 383 384 extern struct termio new_tc; 385 386 # define termEofChar new_tc.c_cc[VEOF] 387 # define termEraseChar new_tc.c_cc[VERASE] 388 # define termIntChar new_tc.c_cc[VINTR] 389 # define termKillChar new_tc.c_cc[VKILL] 390 # define termQuitChar new_tc.c_cc[VQUIT] 391 392 # ifndef VSUSP 393 extern cc_t termSuspChar; 394 # else 395 # define termSuspChar new_tc.c_cc[VSUSP] 396 # endif 397 # if defined(VFLUSHO) && !defined(VDISCARD) 398 # define VDISCARD VFLUSHO 399 # endif 400 # ifndef VDISCARD 401 extern cc_t termFlushChar; 402 # else 403 # define termFlushChar new_tc.c_cc[VDISCARD] 404 # endif 405 # ifndef VWERASE 406 extern cc_t termWerasChar; 407 # else 408 # define termWerasChar new_tc.c_cc[VWERASE] 409 # endif 410 # ifndef VREPRINT 411 extern cc_t termRprntChar; 412 # else 413 # define termRprntChar new_tc.c_cc[VREPRINT] 414 # endif 415 # ifndef VLNEXT 416 extern cc_t termLiteralNextChar; 417 # else 418 # define termLiteralNextChar new_tc.c_cc[VLNEXT] 419 # endif 420 # ifndef VSTART 421 extern cc_t termStartChar; 422 # else 423 # define termStartChar new_tc.c_cc[VSTART] 424 # endif 425 # ifndef VSTOP 426 extern cc_t termStopChar; 427 # else 428 # define termStopChar new_tc.c_cc[VSTOP] 429 # endif 430 # ifndef VEOL 431 extern cc_t termForw1Char; 432 # else 433 # define termForw1Char new_tc.c_cc[VEOL] 434 # endif 435 # ifndef VEOL2 436 extern cc_t termForw2Char; 437 # else 438 # define termForw2Char new_tc.c_cc[VEOL] 439 # endif 440 # ifndef VSTATUS 441 extern cc_t termAytChar; 442 #else 443 # define termAytChar new_tc.c_cc[VSTATUS] 444 #endif 445 446 # if defined(__STDC__) 447 # define termEofCharp &termEofChar 448 # define termEraseCharp &termEraseChar 449 # define termIntCharp &termIntChar 450 # define termKillCharp &termKillChar 451 # define termQuitCharp &termQuitChar 452 # define termSuspCharp &termSuspChar 453 # define termFlushCharp &termFlushChar 454 # define termWerasCharp &termWerasChar 455 # define termRprntCharp &termRprntChar 456 # define termLiteralNextCharp &termLiteralNextChar 457 # define termStartCharp &termStartChar 458 # define termStopCharp &termStopChar 459 # define termForw1Charp &termForw1Char 460 # define termForw2Charp &termForw2Char 461 # define termAytCharp &termAytChar 462 # else 463 /* Work around a compiler bug */ 464 # define termEofCharp 0 465 # define termEraseCharp 0 466 # define termIntCharp 0 467 # define termKillCharp 0 468 # define termQuitCharp 0 469 # define termSuspCharp 0 470 # define termFlushCharp 0 471 # define termWerasCharp 0 472 # define termRprntCharp 0 473 # define termLiteralNextCharp 0 474 # define termStartCharp 0 475 # define termStopCharp 0 476 # define termForw1Charp 0 477 # define termForw2Charp 0 478 # define termAytCharp 0 479 # endif 480 #endif 481 482 typedef struct { 483 int 484 system, /* what the current time is */ 485 echotoggle, /* last time user entered echo character */ 486 modenegotiated, /* last time operating mode negotiated */ 487 didnetreceive, /* last time we read data from network */ 488 gotDM; /* when did we last see a data mark */ 489 } Clocks; 490 491 extern Clocks clocks; 492 493 /* Ring buffer structures which are shared */ 494 495 extern Ring 496 netoring, 497 netiring, 498 ttyoring, 499 ttyiring; 500 501 extern void 502 xmitAO(void), 503 xmitEC(void), 504 xmitEL(void); 505