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 * $FreeBSD$ 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) 62typedef char cc_t; 63# else 64typedef unsigned char cc_t; 65# endif 66#endif 67 68#include <string.h> 69 70#if defined(IPSEC) 71#include <netipsec/ipsec.h> 72#if defined(IPSEC_POLICY_IPSEC) 73extern char *ipsec_policy_in; 74extern 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#if !defined(P) 92# ifdef __STDC__ 93# define P(x) x 94# else 95# define P(x) () 96# endif 97#endif 98 99extern int 100 autologin, /* Autologin enabled */ 101 skiprc, /* Don't process the ~/.telnetrc file */ 102 eight, /* use eight bit mode (binary in and/or out */ 103 family, /* address family of peer */ 104 flushout, /* flush output */ 105 connected, /* Are we connected to the other side? */ 106 globalmode, /* Mode tty should be in */ 107 telnetport, /* Are we connected to the telnet port? */ 108 localflow, /* Flow control handled locally */ 109 restartany, /* If flow control, restart output on any character */ 110 localchars, /* we recognize interrupt/quit */ 111 donelclchars, /* the user has set "localchars" */ 112 showoptions, 113 net, /* Network file descriptor */ 114 tin, /* Terminal input file descriptor */ 115 tout, /* Terminal output file descriptor */ 116 crlf, /* Should '\r' be mapped to <CR><LF> (or <CR><NUL>)? */ 117 autoflush, /* flush output when interrupting? */ 118 autosynch, /* send interrupt characters with SYNCH? */ 119 SYNCHing, /* Is the stream in telnet SYNCH mode? */ 120 donebinarytoggle, /* the user has put us in binary */ 121 dontlecho, /* do we suppress local echoing right now? */ 122 crmod, 123 netdata, /* Print out network data flow */ 124 prettydump, /* Print "netdata" output in user readable format */ 125 termdata, /* Print out terminal data flow */ 126 telnet_debug, /* Debug level */ 127 doaddrlookup, /* do a reverse lookup? */ 128 clienteof; /* Client received EOF */ 129 130extern cc_t escape; /* Escape to command mode */ 131extern cc_t rlogin; /* Rlogin mode escape character */ 132#ifdef KLUDGELINEMODE 133extern cc_t echoc; /* Toggle local echoing */ 134#endif 135 136extern char 137 *prompt; /* Prompt for command. */ 138 139extern char 140 doopt[], 141 dont[], 142 will[], 143 wont[], 144 options[], /* All the little options */ 145 *hostname; /* Who are we connected to? */ 146#ifdef ENCRYPTION 147extern void (*encrypt_output)(unsigned char *, int); 148extern int (*decrypt_input)(int); 149#endif /* ENCRYPTION */ 150 151/* 152 * We keep track of each side of the option negotiation. 153 */ 154 155#define MY_STATE_WILL 0x01 156#define MY_WANT_STATE_WILL 0x02 157#define MY_STATE_DO 0x04 158#define MY_WANT_STATE_DO 0x08 159 160/* 161 * Macros to check the current state of things 162 */ 163 164#define my_state_is_do(opt) (options[opt]&MY_STATE_DO) 165#define my_state_is_will(opt) (options[opt]&MY_STATE_WILL) 166#define my_want_state_is_do(opt) (options[opt]&MY_WANT_STATE_DO) 167#define my_want_state_is_will(opt) (options[opt]&MY_WANT_STATE_WILL) 168 169#define my_state_is_dont(opt) (!my_state_is_do(opt)) 170#define my_state_is_wont(opt) (!my_state_is_will(opt)) 171#define my_want_state_is_dont(opt) (!my_want_state_is_do(opt)) 172#define my_want_state_is_wont(opt) (!my_want_state_is_will(opt)) 173 174#define set_my_state_do(opt) {options[opt] |= MY_STATE_DO;} 175#define set_my_state_will(opt) {options[opt] |= MY_STATE_WILL;} 176#define set_my_want_state_do(opt) {options[opt] |= MY_WANT_STATE_DO;} 177#define set_my_want_state_will(opt) {options[opt] |= MY_WANT_STATE_WILL;} 178 179#define set_my_state_dont(opt) {options[opt] &= ~MY_STATE_DO;} 180#define set_my_state_wont(opt) {options[opt] &= ~MY_STATE_WILL;} 181#define set_my_want_state_dont(opt) {options[opt] &= ~MY_WANT_STATE_DO;} 182#define set_my_want_state_wont(opt) {options[opt] &= ~MY_WANT_STATE_WILL;} 183 184/* 185 * Make everything symetrical 186 */ 187 188#define HIS_STATE_WILL MY_STATE_DO 189#define HIS_WANT_STATE_WILL MY_WANT_STATE_DO 190#define HIS_STATE_DO MY_STATE_WILL 191#define HIS_WANT_STATE_DO MY_WANT_STATE_WILL 192 193#define his_state_is_do my_state_is_will 194#define his_state_is_will my_state_is_do 195#define his_want_state_is_do my_want_state_is_will 196#define his_want_state_is_will my_want_state_is_do 197 198#define his_state_is_dont my_state_is_wont 199#define his_state_is_wont my_state_is_dont 200#define his_want_state_is_dont my_want_state_is_wont 201#define his_want_state_is_wont my_want_state_is_dont 202 203#define set_his_state_do set_my_state_will 204#define set_his_state_will set_my_state_do 205#define set_his_want_state_do set_my_want_state_will 206#define set_his_want_state_will set_my_want_state_do 207 208#define set_his_state_dont set_my_state_wont 209#define set_his_state_wont set_my_state_dont 210#define set_his_want_state_dont set_my_want_state_wont 211#define set_his_want_state_wont set_my_want_state_dont 212 213#if defined(USE_TERMIO) 214#define SIG_FUNC_RET void 215#else 216#define SIG_FUNC_RET int 217#endif 218 219#ifdef SIGINFO 220extern SIG_FUNC_RET 221 ayt_status(void); 222#endif 223 224extern FILE 225 *NetTrace; /* Where debugging output goes */ 226extern unsigned char 227 NetTraceFile[]; /* Name of file where debugging output goes */ 228extern void 229 SetNetTrace(char *); /* Function to change where debugging goes */ 230extern unsigned char 231 ComPortBaudRate[]; /* Baud rate of the remote end */ 232extern void 233 DoBaudRate(char *); /* Function to set the baud rate of the remote end */ 234 235extern jmp_buf 236 toplevel; /* For error conditions. */ 237 238extern void 239 command(int, const char *, int), 240 Dump(char, unsigned char *, int), 241 env_init(void), 242 Exit(int), 243 ExitString(const char *, int), 244 init_network(void), 245 init_sys(void), 246 init_telnet(void), 247 init_terminal(void), 248 intp(void), 249 optionstatus(void), 250 printoption(const char *, int, int), 251 printsub(char, unsigned char *, int), 252 quit(void), 253 sendabort(void), 254 sendbrk(void), 255 sendeof(void), 256 sendsusp(void), 257 sendnaws(void), 258 sendayt(void), 259 setconnmode(int), 260 setcommandmode(void), 261 set_escape_char(char *s), 262 setneturg(void), 263 sys_telnet_init(void), 264 telnet(char *), 265 tel_enter_binary(int), 266 tel_leave_binary(int), 267 TerminalFlushOutput(void), 268 TerminalNewMode(int), 269 TerminalRestoreState(void), 270 TerminalSaveState(void), 271 TerminalDefaultChars(void), 272 TerminalSpeeds(long *, long *), 273 tninit(void), 274 upcase(char *), 275 willoption(int), 276 wontoption(int); 277 278extern void 279 send_do(int, int), 280 send_dont(int, int), 281 send_will(int, int), 282 send_wont(int, int); 283 284extern void 285 lm_will(unsigned char *, int), 286 lm_wont(unsigned char *, int), 287 lm_do(unsigned char *, int), 288 lm_dont(unsigned char *, int), 289 lm_mode(unsigned char *, int, int); 290 291extern void 292 slc_init(void), 293 slcstate(void), 294 slc_mode_export(void), 295 slc_mode_import(int), 296 slc_import(int), 297 slc_export(void), 298 slc(unsigned char *, int), 299 slc_check(void), 300 slc_start_reply(void), 301 slc_add_reply(unsigned char, unsigned char, cc_t), 302 slc_end_reply(void); 303extern int 304 getconnmode(void), 305 opt_welldefined(const char *), 306 NetClose(int), 307 netflush(void), 308 process_rings(int, int, int, int, int, int), 309 rlogin_susp(void), 310 SetSockOpt(int, int, int, int), 311 slc_update(void), 312 stilloob(void), 313 telrcv(void), 314 TerminalRead(char *, int), 315 TerminalWrite(char *, int), 316 TerminalAutoFlush(void), 317 TerminalWindowSize(long *, long *), 318 TerminalSpecialChars(int), 319 tn(int, char **), 320 ttyflush(int); 321 322extern void 323 env_opt(unsigned char *, int), 324 env_opt_start(void), 325 env_opt_start_info(void), 326 env_opt_add(unsigned char *), 327 env_opt_end(int); 328 329extern unsigned char 330 *env_default(int, int), 331 *env_getvalue(const unsigned char *); 332 333extern int 334 get_status(char *), 335 dosynch(char *); 336 337extern cc_t 338 *tcval(int); 339 340#ifndef USE_TERMIO 341 342extern struct tchars ntc; 343extern struct ltchars nltc; 344extern struct sgttyb nttyb; 345 346# define termEofChar ntc.t_eofc 347# define termEraseChar nttyb.sg_erase 348# define termFlushChar nltc.t_flushc 349# define termIntChar ntc.t_intrc 350# define termKillChar nttyb.sg_kill 351# define termLiteralNextChar nltc.t_lnextc 352# define termQuitChar ntc.t_quitc 353# define termSuspChar nltc.t_suspc 354# define termRprntChar nltc.t_rprntc 355# define termWerasChar nltc.t_werasc 356# define termStartChar ntc.t_startc 357# define termStopChar ntc.t_stopc 358# define termForw1Char ntc.t_brkc 359extern cc_t termForw2Char; 360extern cc_t termAytChar; 361 362# define termEofCharp (cc_t *)&ntc.t_eofc 363# define termEraseCharp (cc_t *)&nttyb.sg_erase 364# define termFlushCharp (cc_t *)&nltc.t_flushc 365# define termIntCharp (cc_t *)&ntc.t_intrc 366# define termKillCharp (cc_t *)&nttyb.sg_kill 367# define termLiteralNextCharp (cc_t *)&nltc.t_lnextc 368# define termQuitCharp (cc_t *)&ntc.t_quitc 369# define termSuspCharp (cc_t *)&nltc.t_suspc 370# define termRprntCharp (cc_t *)&nltc.t_rprntc 371# define termWerasCharp (cc_t *)&nltc.t_werasc 372# define termStartCharp (cc_t *)&ntc.t_startc 373# define termStopCharp (cc_t *)&ntc.t_stopc 374# define termForw1Charp (cc_t *)&ntc.t_brkc 375# define termForw2Charp (cc_t *)&termForw2Char 376# define termAytCharp (cc_t *)&termAytChar 377 378# else 379 380extern struct termio new_tc; 381 382# define termEofChar new_tc.c_cc[VEOF] 383# define termEraseChar new_tc.c_cc[VERASE] 384# define termIntChar new_tc.c_cc[VINTR] 385# define termKillChar new_tc.c_cc[VKILL] 386# define termQuitChar new_tc.c_cc[VQUIT] 387 388# ifndef VSUSP 389extern cc_t termSuspChar; 390# else 391# define termSuspChar new_tc.c_cc[VSUSP] 392# endif 393# if defined(VFLUSHO) && !defined(VDISCARD) 394# define VDISCARD VFLUSHO 395# endif 396# ifndef VDISCARD 397extern cc_t termFlushChar; 398# else 399# define termFlushChar new_tc.c_cc[VDISCARD] 400# endif 401# ifndef VWERASE 402extern cc_t termWerasChar; 403# else 404# define termWerasChar new_tc.c_cc[VWERASE] 405# endif 406# ifndef VREPRINT 407extern cc_t termRprntChar; 408# else 409# define termRprntChar new_tc.c_cc[VREPRINT] 410# endif 411# ifndef VLNEXT 412extern cc_t termLiteralNextChar; 413# else 414# define termLiteralNextChar new_tc.c_cc[VLNEXT] 415# endif 416# ifndef VSTART 417extern cc_t termStartChar; 418# else 419# define termStartChar new_tc.c_cc[VSTART] 420# endif 421# ifndef VSTOP 422extern cc_t termStopChar; 423# else 424# define termStopChar new_tc.c_cc[VSTOP] 425# endif 426# ifndef VEOL 427extern cc_t termForw1Char; 428# else 429# define termForw1Char new_tc.c_cc[VEOL] 430# endif 431# ifndef VEOL2 432extern cc_t termForw2Char; 433# else 434# define termForw2Char new_tc.c_cc[VEOL] 435# endif 436# ifndef VSTATUS 437extern cc_t termAytChar; 438#else 439# define termAytChar new_tc.c_cc[VSTATUS] 440#endif 441 442# if defined(__STDC__) 443# define termEofCharp &termEofChar 444# define termEraseCharp &termEraseChar 445# define termIntCharp &termIntChar 446# define termKillCharp &termKillChar 447# define termQuitCharp &termQuitChar 448# define termSuspCharp &termSuspChar 449# define termFlushCharp &termFlushChar 450# define termWerasCharp &termWerasChar 451# define termRprntCharp &termRprntChar 452# define termLiteralNextCharp &termLiteralNextChar 453# define termStartCharp &termStartChar 454# define termStopCharp &termStopChar 455# define termForw1Charp &termForw1Char 456# define termForw2Charp &termForw2Char 457# define termAytCharp &termAytChar 458# else 459 /* Work around a compiler bug */ 460# define termEofCharp 0 461# define termEraseCharp 0 462# define termIntCharp 0 463# define termKillCharp 0 464# define termQuitCharp 0 465# define termSuspCharp 0 466# define termFlushCharp 0 467# define termWerasCharp 0 468# define termRprntCharp 0 469# define termLiteralNextCharp 0 470# define termStartCharp 0 471# define termStopCharp 0 472# define termForw1Charp 0 473# define termForw2Charp 0 474# define termAytCharp 0 475# endif 476#endif 477 478typedef struct { 479 int 480 system, /* what the current time is */ 481 echotoggle, /* last time user entered echo character */ 482 modenegotiated, /* last time operating mode negotiated */ 483 didnetreceive, /* last time we read data from network */ 484 gotDM; /* when did we last see a data mark */ 485} Clocks; 486 487extern Clocks clocks; 488 489/* Ring buffer structures which are shared */ 490 491extern Ring 492 netoring, 493 netiring, 494 ttyoring, 495 ttyiring; 496 497extern void 498 xmitAO(void), 499 xmitEC(void), 500 xmitEL(void); 501