projects / apple / network_cmds.git / blame
| Commit | Line | Data |
|---|---|---|
| b7080c8e A |
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 | ||
| 7ba0088d A |
34 | #include <sys/cdefs.h> |
| 35 | #include <stdlib.h> | |
| 36 | #include <err.h> | |
| 37 | ||
| 38 | #ifdef __FBSDID | |
| 39 | __FBSDID("$FreeBSD: src/crypto/telnet/telnet/sys_bsd.c,v 1.2.8.4 2002/04/13 10:59:08 markm Exp $"); | |
| 40 | #endif | |
| 41 | ||
| 42 | #ifndef __unused | |
| 43 | #define __unused __attribute__((__unused__)) | |
| 44 | #endif | |
| 45 | ||
| b7080c8e | 46 | #ifndef lint |
| 7ba0088d A |
47 | static const char sccsid[] = "@(#)sys_bsd.c 8.4 (Berkeley) 5/30/95"; |
| 48 | #endif | |
| b7080c8e A |
49 | |
| 50 | /* | |
| 51 | * The following routines try to encapsulate what is system dependent | |
| 52 | * (at least between 4.x and dos) which is used in telnet.c. | |
| 53 | */ | |
| 54 | ||
| b7080c8e | 55 | #include <sys/types.h> |
| b7080c8e | 56 | #include <sys/socket.h> |
| 7ba0088d | 57 | #include <sys/time.h> |
| b7080c8e | 58 | #include <errno.h> |
| 7ba0088d A |
59 | #include <fcntl.h> |
| 60 | #include <signal.h> | |
| 61 | #include <unistd.h> | |
| b7080c8e A |
62 | #include <arpa/telnet.h> |
| 63 | ||
| 64 | #include "ring.h" | |
| b7080c8e | 65 | #include "fdset.h" |
| b7080c8e A |
66 | #include "defines.h" |
| 67 | #include "externs.h" | |
| 68 | #include "types.h" | |
| 69 | ||
| b7080c8e A |
70 | int |
| 71 | tout, /* Output file descriptor */ | |
| 72 | tin, /* Input file descriptor */ | |
| 73 | net; | |
| 74 | ||
| 75 | #ifndef USE_TERMIO | |
| 76 | struct tchars otc = { 0 }, ntc = { 0 }; | |
| 77 | struct ltchars oltc = { 0 }, nltc = { 0 }; | |
| 78 | struct sgttyb ottyb = { 0 }, nttyb = { 0 }; | |
| 79 | int olmode = 0; | |
| 80 | # define cfgetispeed(ptr) (ptr)->sg_ispeed | |
| 81 | # define cfgetospeed(ptr) (ptr)->sg_ospeed | |
| 82 | # define old_tc ottyb | |
| 83 | ||
| 84 | #else /* USE_TERMIO */ | |
| 7ba0088d | 85 | struct termio old_tc = { 0, 0, 0, 0, {}, 0, 0 }; |
| b7080c8e A |
86 | |
| 87 | # ifndef TCSANOW | |
| 88 | # ifdef TCSETS | |
| 89 | # define TCSANOW TCSETS | |
| 90 | # define TCSADRAIN TCSETSW | |
| 91 | # define tcgetattr(f, t) ioctl(f, TCGETS, (char *)t) | |
| 92 | # else | |
| 93 | # ifdef TCSETA | |
| 94 | # define TCSANOW TCSETA | |
| 95 | # define TCSADRAIN TCSETAW | |
| 96 | # define tcgetattr(f, t) ioctl(f, TCGETA, (char *)t) | |
| 97 | # else | |
| 98 | # define TCSANOW TIOCSETA | |
| 99 | # define TCSADRAIN TIOCSETAW | |
| 100 | # define tcgetattr(f, t) ioctl(f, TIOCGETA, (char *)t) | |
| 101 | # endif | |
| 102 | # endif | |
| 103 | # define tcsetattr(f, a, t) ioctl(f, a, (char *)t) | |
| 104 | # define cfgetospeed(ptr) ((ptr)->c_cflag&CBAUD) | |
| 105 | # ifdef CIBAUD | |
| 106 | # define cfgetispeed(ptr) (((ptr)->c_cflag&CIBAUD) >> IBSHIFT) | |
| 107 | # else | |
| 108 | # define cfgetispeed(ptr) cfgetospeed(ptr) | |
| 109 | # endif | |
| 110 | # endif /* TCSANOW */ | |
| 111 | # ifdef sysV88 | |
| 112 | # define TIOCFLUSH TC_PX_DRAIN | |
| 113 | # endif | |
| 114 | #endif /* USE_TERMIO */ | |
| 115 | ||
| 7ba0088d A |
116 | static fd_set *ibitsp, *obitsp, *xbitsp; |
| 117 | int fdsn; | |
| b7080c8e | 118 | |
| 7ba0088d A |
119 | #ifdef SIGINT |
| 120 | static SIG_FUNC_RET intr(int); | |
| 121 | #endif /* SIGINT */ | |
| 122 | #ifdef SIGQUIT | |
| 123 | static SIG_FUNC_RET intr2(int); | |
| 124 | #endif /* SIGQUIT */ | |
| 125 | #ifdef SIGTSTP | |
| 126 | static SIG_FUNC_RET susp(int); | |
| 127 | #endif /* SIGTSTP */ | |
| 128 | #ifdef SIGINFO | |
| 129 | static SIG_FUNC_RET ayt(int); | |
| 130 | #endif | |
| b7080c8e | 131 | |
| 7ba0088d A |
132 | void |
| 133 | init_sys(void) | |
| b7080c8e A |
134 | { |
| 135 | tout = fileno(stdout); | |
| 136 | tin = fileno(stdin); | |
| b7080c8e A |
137 | errno = 0; |
| 138 | } | |
| 139 | ||
| 7ba0088d A |
140 | int |
| 141 | TerminalWrite(char *buf, int n) | |
| b7080c8e A |
142 | { |
| 143 | return write(tout, buf, n); | |
| 144 | } | |
| 145 | ||
| 7ba0088d A |
146 | int |
| 147 | TerminalRead(char *buf, int n) | |
| b7080c8e A |
148 | { |
| 149 | return read(tin, buf, n); | |
| 150 | } | |
| 151 | ||
| 152 | /* | |
| 153 | * | |
| 154 | */ | |
| 155 | ||
| 7ba0088d A |
156 | int |
| 157 | TerminalAutoFlush(void) | |
| b7080c8e A |
158 | { |
| 159 | #if defined(LNOFLSH) | |
| 160 | int flush; | |
| 161 | ||
| 162 | ioctl(0, TIOCLGET, (char *)&flush); | |
| 163 | return !(flush&LNOFLSH); /* if LNOFLSH, no autoflush */ | |
| 164 | #else /* LNOFLSH */ | |
| 165 | return 1; | |
| 166 | #endif /* LNOFLSH */ | |
| 167 | } | |
| 168 | ||
| 169 | #ifdef KLUDGELINEMODE | |
| 170 | extern int kludgelinemode; | |
| 171 | #endif | |
| 172 | /* | |
| 173 | * TerminalSpecialChars() | |
| 174 | * | |
| 175 | * Look at an input character to see if it is a special character | |
| 176 | * and decide what to do. | |
| 177 | * | |
| 178 | * Output: | |
| 179 | * | |
| 180 | * 0 Don't add this character. | |
| 181 | * 1 Do add this character | |
| 182 | */ | |
| 183 | ||
| 7ba0088d A |
184 | int |
| 185 | TerminalSpecialChars(int c) | |
| b7080c8e A |
186 | { |
| 187 | if (c == termIntChar) { | |
| 188 | intp(); | |
| 189 | return 0; | |
| 190 | } else if (c == termQuitChar) { | |
| 191 | #ifdef KLUDGELINEMODE | |
| 192 | if (kludgelinemode) | |
| 193 | sendbrk(); | |
| 194 | else | |
| 195 | #endif | |
| 196 | sendabort(); | |
| 197 | return 0; | |
| 198 | } else if (c == termEofChar) { | |
| 199 | if (my_want_state_is_will(TELOPT_LINEMODE)) { | |
| 200 | sendeof(); | |
| 201 | return 0; | |
| 202 | } | |
| 203 | return 1; | |
| 204 | } else if (c == termSuspChar) { | |
| 205 | sendsusp(); | |
| 206 | return(0); | |
| 207 | } else if (c == termFlushChar) { | |
| 208 | xmitAO(); /* Transmit Abort Output */ | |
| 209 | return 0; | |
| 210 | } else if (!MODE_LOCAL_CHARS(globalmode)) { | |
| 211 | if (c == termKillChar) { | |
| 212 | xmitEL(); | |
| 213 | return 0; | |
| 214 | } else if (c == termEraseChar) { | |
| 215 | xmitEC(); /* Transmit Erase Character */ | |
| 216 | return 0; | |
| 217 | } | |
| 218 | } | |
| 219 | return 1; | |
| 220 | } | |
| 221 | ||
| 222 | ||
| 223 | /* | |
| 224 | * Flush output to the terminal | |
| 225 | */ | |
| 226 | ||
| 7ba0088d A |
227 | void |
| 228 | TerminalFlushOutput(void) | |
| b7080c8e A |
229 | { |
| 230 | #ifdef TIOCFLUSH | |
| 231 | (void) ioctl(fileno(stdout), TIOCFLUSH, (char *) 0); | |
| 232 | #else | |
| 233 | (void) ioctl(fileno(stdout), TCFLSH, (char *) 0); | |
| 234 | #endif | |
| 235 | } | |
| 236 | ||
| 7ba0088d A |
237 | void |
| 238 | TerminalSaveState(void) | |
| b7080c8e A |
239 | { |
| 240 | #ifndef USE_TERMIO | |
| 241 | ioctl(0, TIOCGETP, (char *)&ottyb); | |
| 242 | ioctl(0, TIOCGETC, (char *)&otc); | |
| 243 | ioctl(0, TIOCGLTC, (char *)&oltc); | |
| 244 | ioctl(0, TIOCLGET, (char *)&olmode); | |
| 245 | ||
| 246 | ntc = otc; | |
| 247 | nltc = oltc; | |
| 248 | nttyb = ottyb; | |
| 249 | ||
| 250 | #else /* USE_TERMIO */ | |
| 251 | tcgetattr(0, &old_tc); | |
| 252 | ||
| 253 | new_tc = old_tc; | |
| 254 | ||
| 255 | #ifndef VDISCARD | |
| 256 | termFlushChar = CONTROL('O'); | |
| 257 | #endif | |
| 258 | #ifndef VWERASE | |
| 259 | termWerasChar = CONTROL('W'); | |
| 260 | #endif | |
| 261 | #ifndef VREPRINT | |
| 262 | termRprntChar = CONTROL('R'); | |
| 263 | #endif | |
| 264 | #ifndef VLNEXT | |
| 265 | termLiteralNextChar = CONTROL('V'); | |
| 266 | #endif | |
| 267 | #ifndef VSTART | |
| 268 | termStartChar = CONTROL('Q'); | |
| 269 | #endif | |
| 270 | #ifndef VSTOP | |
| 271 | termStopChar = CONTROL('S'); | |
| 272 | #endif | |
| 273 | #ifndef VSTATUS | |
| 274 | termAytChar = CONTROL('T'); | |
| 275 | #endif | |
| 276 | #endif /* USE_TERMIO */ | |
| 277 | } | |
| 278 | ||
| 7ba0088d A |
279 | cc_t * |
| 280 | tcval(int func) | |
| b7080c8e A |
281 | { |
| 282 | switch(func) { | |
| 283 | case SLC_IP: return(&termIntChar); | |
| 284 | case SLC_ABORT: return(&termQuitChar); | |
| 285 | case SLC_EOF: return(&termEofChar); | |
| 286 | case SLC_EC: return(&termEraseChar); | |
| 287 | case SLC_EL: return(&termKillChar); | |
| 288 | case SLC_XON: return(&termStartChar); | |
| 289 | case SLC_XOFF: return(&termStopChar); | |
| 290 | case SLC_FORW1: return(&termForw1Char); | |
| 291 | #ifdef USE_TERMIO | |
| 292 | case SLC_FORW2: return(&termForw2Char); | |
| 293 | # ifdef VDISCARD | |
| 294 | case SLC_AO: return(&termFlushChar); | |
| 295 | # endif | |
| 296 | # ifdef VSUSP | |
| 297 | case SLC_SUSP: return(&termSuspChar); | |
| 298 | # endif | |
| 299 | # ifdef VWERASE | |
| 300 | case SLC_EW: return(&termWerasChar); | |
| 301 | # endif | |
| 302 | # ifdef VREPRINT | |
| 303 | case SLC_RP: return(&termRprntChar); | |
| 304 | # endif | |
| 305 | # ifdef VLNEXT | |
| 306 | case SLC_LNEXT: return(&termLiteralNextChar); | |
| 307 | # endif | |
| 308 | # ifdef VSTATUS | |
| 309 | case SLC_AYT: return(&termAytChar); | |
| 310 | # endif | |
| 311 | #endif | |
| 312 | ||
| 313 | case SLC_SYNCH: | |
| 314 | case SLC_BRK: | |
| 315 | case SLC_EOR: | |
| 316 | default: | |
| 317 | return((cc_t *)0); | |
| 318 | } | |
| 319 | } | |
| 320 | ||
| 7ba0088d A |
321 | void |
| 322 | TerminalDefaultChars(void) | |
| b7080c8e A |
323 | { |
| 324 | #ifndef USE_TERMIO | |
| 325 | ntc = otc; | |
| 326 | nltc = oltc; | |
| 327 | nttyb.sg_kill = ottyb.sg_kill; | |
| 328 | nttyb.sg_erase = ottyb.sg_erase; | |
| 329 | #else /* USE_TERMIO */ | |
| 7ba0088d | 330 | memcpy(new_tc.c_cc, old_tc.c_cc, sizeof(old_tc.c_cc)); |
| b7080c8e A |
331 | # ifndef VDISCARD |
| 332 | termFlushChar = CONTROL('O'); | |
| 333 | # endif | |
| 334 | # ifndef VWERASE | |
| 335 | termWerasChar = CONTROL('W'); | |
| 336 | # endif | |
| 337 | # ifndef VREPRINT | |
| 338 | termRprntChar = CONTROL('R'); | |
| 339 | # endif | |
| 340 | # ifndef VLNEXT | |
| 341 | termLiteralNextChar = CONTROL('V'); | |
| 342 | # endif | |
| 343 | # ifndef VSTART | |
| 344 | termStartChar = CONTROL('Q'); | |
| 345 | # endif | |
| 346 | # ifndef VSTOP | |
| 347 | termStopChar = CONTROL('S'); | |
| 348 | # endif | |
| 349 | # ifndef VSTATUS | |
| 350 | termAytChar = CONTROL('T'); | |
| 351 | # endif | |
| 352 | #endif /* USE_TERMIO */ | |
| 353 | } | |
| 354 | ||
| b7080c8e A |
355 | /* |
| 356 | * TerminalNewMode - set up terminal to a specific mode. | |
| 357 | * MODE_ECHO: do local terminal echo | |
| 358 | * MODE_FLOW: do local flow control | |
| 359 | * MODE_TRAPSIG: do local mapping to TELNET IAC sequences | |
| 360 | * MODE_EDIT: do local line editing | |
| 361 | * | |
| 362 | * Command mode: | |
| 363 | * MODE_ECHO|MODE_EDIT|MODE_FLOW|MODE_TRAPSIG | |
| 364 | * local echo | |
| 365 | * local editing | |
| 366 | * local xon/xoff | |
| 367 | * local signal mapping | |
| 368 | * | |
| 369 | * Linemode: | |
| 370 | * local/no editing | |
| 371 | * Both Linemode and Single Character mode: | |
| 372 | * local/remote echo | |
| 373 | * local/no xon/xoff | |
| 374 | * local/no signal mapping | |
| 375 | */ | |
| 376 | ||
| 7ba0088d A |
377 | void |
| 378 | TerminalNewMode(int f) | |
| b7080c8e A |
379 | { |
| 380 | static int prevmode = 0; | |
| 381 | #ifndef USE_TERMIO | |
| 382 | struct tchars tc; | |
| 383 | struct ltchars ltc; | |
| 384 | struct sgttyb sb; | |
| 385 | int lmode; | |
| 386 | #else /* USE_TERMIO */ | |
| 387 | struct termio tmp_tc; | |
| 388 | #endif /* USE_TERMIO */ | |
| 389 | int onoff; | |
| 390 | int old; | |
| 391 | cc_t esc; | |
| 392 | ||
| 393 | globalmode = f&~MODE_FORCE; | |
| 394 | if (prevmode == f) | |
| 395 | return; | |
| 396 | ||
| 397 | /* | |
| 398 | * Write any outstanding data before switching modes | |
| 399 | * ttyflush() returns 0 only when there is no more data | |
| 400 | * left to write out, it returns -1 if it couldn't do | |
| 401 | * anything at all, otherwise it returns 1 + the number | |
| 402 | * of characters left to write. | |
| 403 | #ifndef USE_TERMIO | |
| 404 | * We would really like ask the kernel to wait for the output | |
| 405 | * to drain, like we can do with the TCSADRAIN, but we don't have | |
| 406 | * that option. The only ioctl that waits for the output to | |
| 407 | * drain, TIOCSETP, also flushes the input queue, which is NOT | |
| 408 | * what we want (TIOCSETP is like TCSADFLUSH). | |
| 409 | #endif | |
| 410 | */ | |
| 411 | old = ttyflush(SYNCHing|flushout); | |
| 412 | if (old < 0 || old > 1) { | |
| 413 | #ifdef USE_TERMIO | |
| 414 | tcgetattr(tin, &tmp_tc); | |
| 415 | #endif /* USE_TERMIO */ | |
| 416 | do { | |
| 417 | /* | |
| 418 | * Wait for data to drain, then flush again. | |
| 419 | */ | |
| 420 | #ifdef USE_TERMIO | |
| 421 | tcsetattr(tin, TCSADRAIN, &tmp_tc); | |
| 422 | #endif /* USE_TERMIO */ | |
| 423 | old = ttyflush(SYNCHing|flushout); | |
| 424 | } while (old < 0 || old > 1); | |
| 425 | } | |
| 426 | ||
| 427 | old = prevmode; | |
| 428 | prevmode = f&~MODE_FORCE; | |
| 429 | #ifndef USE_TERMIO | |
| 430 | sb = nttyb; | |
| 431 | tc = ntc; | |
| 432 | ltc = nltc; | |
| 433 | lmode = olmode; | |
| 434 | #else | |
| 435 | tmp_tc = new_tc; | |
| 436 | #endif | |
| 437 | ||
| 438 | if (f&MODE_ECHO) { | |
| 439 | #ifndef USE_TERMIO | |
| 440 | sb.sg_flags |= ECHO; | |
| 441 | #else | |
| 442 | tmp_tc.c_lflag |= ECHO; | |
| 443 | tmp_tc.c_oflag |= ONLCR; | |
| 444 | if (crlf) | |
| 445 | tmp_tc.c_iflag |= ICRNL; | |
| 446 | #endif | |
| 447 | } else { | |
| 448 | #ifndef USE_TERMIO | |
| 449 | sb.sg_flags &= ~ECHO; | |
| 450 | #else | |
| 451 | tmp_tc.c_lflag &= ~ECHO; | |
| 452 | tmp_tc.c_oflag &= ~ONLCR; | |
| b7080c8e A |
453 | #endif |
| 454 | } | |
| 455 | ||
| 456 | if ((f&MODE_FLOW) == 0) { | |
| 457 | #ifndef USE_TERMIO | |
| 458 | tc.t_startc = _POSIX_VDISABLE; | |
| 459 | tc.t_stopc = _POSIX_VDISABLE; | |
| 460 | #else | |
| 461 | tmp_tc.c_iflag &= ~(IXOFF|IXON); /* Leave the IXANY bit alone */ | |
| 462 | } else { | |
| 463 | if (restartany < 0) { | |
| 464 | tmp_tc.c_iflag |= IXOFF|IXON; /* Leave the IXANY bit alone */ | |
| 465 | } else if (restartany > 0) { | |
| 466 | tmp_tc.c_iflag |= IXOFF|IXON|IXANY; | |
| 467 | } else { | |
| 468 | tmp_tc.c_iflag |= IXOFF|IXON; | |
| 469 | tmp_tc.c_iflag &= ~IXANY; | |
| 470 | } | |
| 471 | #endif | |
| 472 | } | |
| 473 | ||
| 474 | if ((f&MODE_TRAPSIG) == 0) { | |
| 475 | #ifndef USE_TERMIO | |
| 476 | tc.t_intrc = _POSIX_VDISABLE; | |
| 477 | tc.t_quitc = _POSIX_VDISABLE; | |
| 478 | tc.t_eofc = _POSIX_VDISABLE; | |
| 479 | ltc.t_suspc = _POSIX_VDISABLE; | |
| 480 | ltc.t_dsuspc = _POSIX_VDISABLE; | |
| 481 | #else | |
| 482 | tmp_tc.c_lflag &= ~ISIG; | |
| 483 | #endif | |
| 484 | localchars = 0; | |
| 485 | } else { | |
| 486 | #ifdef USE_TERMIO | |
| 487 | tmp_tc.c_lflag |= ISIG; | |
| 488 | #endif | |
| 489 | localchars = 1; | |
| 490 | } | |
| 491 | ||
| 492 | if (f&MODE_EDIT) { | |
| 493 | #ifndef USE_TERMIO | |
| 494 | sb.sg_flags &= ~CBREAK; | |
| 495 | sb.sg_flags |= CRMOD; | |
| 496 | #else | |
| 497 | tmp_tc.c_lflag |= ICANON; | |
| 498 | #endif | |
| 499 | } else { | |
| 500 | #ifndef USE_TERMIO | |
| 501 | sb.sg_flags |= CBREAK; | |
| 502 | if (f&MODE_ECHO) | |
| 503 | sb.sg_flags |= CRMOD; | |
| 504 | else | |
| 505 | sb.sg_flags &= ~CRMOD; | |
| 506 | #else | |
| 507 | tmp_tc.c_lflag &= ~ICANON; | |
| 508 | tmp_tc.c_iflag &= ~ICRNL; | |
| 509 | tmp_tc.c_cc[VMIN] = 1; | |
| 510 | tmp_tc.c_cc[VTIME] = 0; | |
| 511 | #endif | |
| 512 | } | |
| 513 | ||
| 514 | if ((f&(MODE_EDIT|MODE_TRAPSIG)) == 0) { | |
| 515 | #ifndef USE_TERMIO | |
| 516 | ltc.t_lnextc = _POSIX_VDISABLE; | |
| 517 | #else | |
| 518 | # ifdef VLNEXT | |
| 519 | tmp_tc.c_cc[VLNEXT] = (cc_t)(_POSIX_VDISABLE); | |
| 520 | # endif | |
| 521 | #endif | |
| 522 | } | |
| 523 | ||
| 524 | if (f&MODE_SOFT_TAB) { | |
| 525 | #ifndef USE_TERMIO | |
| 526 | sb.sg_flags |= XTABS; | |
| 527 | #else | |
| 528 | # ifdef OXTABS | |
| 529 | tmp_tc.c_oflag |= OXTABS; | |
| 530 | # endif | |
| 531 | # ifdef TABDLY | |
| 532 | tmp_tc.c_oflag &= ~TABDLY; | |
| 533 | tmp_tc.c_oflag |= TAB3; | |
| 534 | # endif | |
| 535 | #endif | |
| 536 | } else { | |
| 537 | #ifndef USE_TERMIO | |
| 538 | sb.sg_flags &= ~XTABS; | |
| 539 | #else | |
| 540 | # ifdef OXTABS | |
| 541 | tmp_tc.c_oflag &= ~OXTABS; | |
| 542 | # endif | |
| 543 | # ifdef TABDLY | |
| 544 | tmp_tc.c_oflag &= ~TABDLY; | |
| 545 | # endif | |
| 546 | #endif | |
| 547 | } | |
| 548 | ||
| 549 | if (f&MODE_LIT_ECHO) { | |
| 550 | #ifndef USE_TERMIO | |
| 551 | lmode &= ~LCTLECH; | |
| 552 | #else | |
| 553 | # ifdef ECHOCTL | |
| 554 | tmp_tc.c_lflag &= ~ECHOCTL; | |
| 555 | # endif | |
| 556 | #endif | |
| 557 | } else { | |
| 558 | #ifndef USE_TERMIO | |
| 559 | lmode |= LCTLECH; | |
| 560 | #else | |
| 561 | # ifdef ECHOCTL | |
| 562 | tmp_tc.c_lflag |= ECHOCTL; | |
| 563 | # endif | |
| 564 | #endif | |
| 565 | } | |
| 566 | ||
| 567 | if (f == -1) { | |
| 568 | onoff = 0; | |
| 569 | } else { | |
| 570 | #ifndef USE_TERMIO | |
| 571 | if (f & MODE_OUTBIN) | |
| 572 | lmode |= LLITOUT; | |
| 573 | else | |
| 574 | lmode &= ~LLITOUT; | |
| 575 | ||
| 576 | if (f & MODE_INBIN) | |
| 577 | lmode |= LPASS8; | |
| 578 | else | |
| 579 | lmode &= ~LPASS8; | |
| 580 | #else | |
| 581 | if (f & MODE_INBIN) | |
| 582 | tmp_tc.c_iflag &= ~ISTRIP; | |
| 583 | else | |
| 584 | tmp_tc.c_iflag |= ISTRIP; | |
| 585 | if (f & MODE_OUTBIN) { | |
| 586 | tmp_tc.c_cflag &= ~(CSIZE|PARENB); | |
| 587 | tmp_tc.c_cflag |= CS8; | |
| 588 | tmp_tc.c_oflag &= ~OPOST; | |
| 589 | } else { | |
| 590 | tmp_tc.c_cflag &= ~(CSIZE|PARENB); | |
| 591 | tmp_tc.c_cflag |= old_tc.c_cflag & (CSIZE|PARENB); | |
| 592 | tmp_tc.c_oflag |= OPOST; | |
| 593 | } | |
| 594 | #endif | |
| 595 | onoff = 1; | |
| 596 | } | |
| 597 | ||
| 598 | if (f != -1) { | |
| 7ba0088d A |
599 | #ifdef SIGINT |
| 600 | (void) signal(SIGINT, intr); | |
| 601 | #endif | |
| 602 | #ifdef SIGQUIT | |
| 603 | (void) signal(SIGQUIT, intr2); | |
| b7080c8e | 604 | #endif |
| b7080c8e A |
605 | #ifdef SIGTSTP |
| 606 | (void) signal(SIGTSTP, susp); | |
| 607 | #endif /* SIGTSTP */ | |
| 608 | #ifdef SIGINFO | |
| 609 | (void) signal(SIGINFO, ayt); | |
| 610 | #endif | |
| 611 | #if defined(USE_TERMIO) && defined(NOKERNINFO) | |
| 612 | tmp_tc.c_lflag |= NOKERNINFO; | |
| 613 | #endif | |
| 614 | /* | |
| 615 | * We don't want to process ^Y here. It's just another | |
| 616 | * character that we'll pass on to the back end. It has | |
| 617 | * to process it because it will be processed when the | |
| 618 | * user attempts to read it, not when we send it. | |
| 619 | */ | |
| 620 | #ifndef USE_TERMIO | |
| 621 | ltc.t_dsuspc = _POSIX_VDISABLE; | |
| 622 | #else | |
| 623 | # ifdef VDSUSP | |
| 624 | tmp_tc.c_cc[VDSUSP] = (cc_t)(_POSIX_VDISABLE); | |
| 625 | # endif | |
| 626 | #endif | |
| 627 | #ifdef USE_TERMIO | |
| 628 | /* | |
| 629 | * If the VEOL character is already set, then use VEOL2, | |
| 630 | * otherwise use VEOL. | |
| 631 | */ | |
| 632 | esc = (rlogin != _POSIX_VDISABLE) ? rlogin : escape; | |
| 633 | if ((tmp_tc.c_cc[VEOL] != esc) | |
| 634 | # ifdef VEOL2 | |
| 635 | && (tmp_tc.c_cc[VEOL2] != esc) | |
| 636 | # endif | |
| 637 | ) { | |
| 638 | if (tmp_tc.c_cc[VEOL] == (cc_t)(_POSIX_VDISABLE)) | |
| 639 | tmp_tc.c_cc[VEOL] = esc; | |
| 640 | # ifdef VEOL2 | |
| 641 | else if (tmp_tc.c_cc[VEOL2] == (cc_t)(_POSIX_VDISABLE)) | |
| 642 | tmp_tc.c_cc[VEOL2] = esc; | |
| 643 | # endif | |
| 644 | } | |
| 645 | #else | |
| 646 | if (tc.t_brkc == (cc_t)(_POSIX_VDISABLE)) | |
| 647 | tc.t_brkc = esc; | |
| 648 | #endif | |
| 649 | } else { | |
| 650 | #ifdef SIGINFO | |
| 7ba0088d A |
651 | (void) signal(SIGINFO, (void (*)(int))ayt_status); |
| 652 | #endif | |
| 653 | #ifdef SIGINT | |
| 654 | (void) signal(SIGINT, SIG_DFL); | |
| 655 | #endif | |
| 656 | #ifdef SIGQUIT | |
| 657 | (void) signal(SIGQUIT, SIG_DFL); | |
| b7080c8e A |
658 | #endif |
| 659 | #ifdef SIGTSTP | |
| 660 | (void) signal(SIGTSTP, SIG_DFL); | |
| 661 | # ifndef SOLARIS | |
| 662 | (void) sigsetmask(sigblock(0) & ~(1<<(SIGTSTP-1))); | |
| 663 | # else SOLARIS | |
| 664 | (void) sigrelse(SIGTSTP); | |
| 665 | # endif SOLARIS | |
| 666 | #endif /* SIGTSTP */ | |
| 667 | #ifndef USE_TERMIO | |
| 668 | ltc = oltc; | |
| 669 | tc = otc; | |
| 670 | sb = ottyb; | |
| 671 | lmode = olmode; | |
| 672 | #else | |
| 673 | tmp_tc = old_tc; | |
| 674 | #endif | |
| 675 | } | |
| 676 | #ifndef USE_TERMIO | |
| 677 | ioctl(tin, TIOCLSET, (char *)&lmode); | |
| 678 | ioctl(tin, TIOCSLTC, (char *)<c); | |
| 679 | ioctl(tin, TIOCSETC, (char *)&tc); | |
| 680 | ioctl(tin, TIOCSETN, (char *)&sb); | |
| 681 | #else | |
| 682 | if (tcsetattr(tin, TCSADRAIN, &tmp_tc) < 0) | |
| 683 | tcsetattr(tin, TCSANOW, &tmp_tc); | |
| 684 | #endif | |
| 685 | ||
| b7080c8e A |
686 | ioctl(tin, FIONBIO, (char *)&onoff); |
| 687 | ioctl(tout, FIONBIO, (char *)&onoff); | |
| b7080c8e A |
688 | |
| 689 | } | |
| 690 | ||
| 691 | /* | |
| 692 | * Try to guess whether speeds are "encoded" (4.2BSD) or just numeric (4.4BSD). | |
| 693 | */ | |
| 694 | #if B4800 != 4800 | |
| 695 | #define DECODE_BAUD | |
| 696 | #endif | |
| 697 | ||
| 698 | #ifdef DECODE_BAUD | |
| 699 | #ifndef B7200 | |
| 700 | #define B7200 B4800 | |
| 701 | #endif | |
| 702 | ||
| 703 | #ifndef B14400 | |
| 704 | #define B14400 B9600 | |
| 705 | #endif | |
| 706 | ||
| 707 | #ifndef B19200 | |
| 708 | # define B19200 B14400 | |
| 709 | #endif | |
| 710 | ||
| 711 | #ifndef B28800 | |
| 712 | #define B28800 B19200 | |
| 713 | #endif | |
| 714 | ||
| 715 | #ifndef B38400 | |
| 716 | # define B38400 B28800 | |
| 717 | #endif | |
| 718 | ||
| 719 | #ifndef B57600 | |
| 720 | #define B57600 B38400 | |
| 721 | #endif | |
| 722 | ||
| 723 | #ifndef B76800 | |
| 724 | #define B76800 B57600 | |
| 725 | #endif | |
| 726 | ||
| 727 | #ifndef B115200 | |
| 728 | #define B115200 B76800 | |
| 729 | #endif | |
| 730 | ||
| 731 | #ifndef B230400 | |
| 732 | #define B230400 B115200 | |
| 733 | #endif | |
| 734 | ||
| 735 | ||
| 736 | /* | |
| 737 | * This code assumes that the values B0, B50, B75... | |
| 738 | * are in ascending order. They do not have to be | |
| 739 | * contiguous. | |
| 740 | */ | |
| 741 | struct termspeeds { | |
| 742 | long speed; | |
| 743 | long value; | |
| 744 | } termspeeds[] = { | |
| 745 | { 0, B0 }, { 50, B50 }, { 75, B75 }, | |
| 746 | { 110, B110 }, { 134, B134 }, { 150, B150 }, | |
| 747 | { 200, B200 }, { 300, B300 }, { 600, B600 }, | |
| 748 | { 1200, B1200 }, { 1800, B1800 }, { 2400, B2400 }, | |
| 749 | { 4800, B4800 }, { 7200, B7200 }, { 9600, B9600 }, | |
| 750 | { 14400, B14400 }, { 19200, B19200 }, { 28800, B28800 }, | |
| 751 | { 38400, B38400 }, { 57600, B57600 }, { 115200, B115200 }, | |
| 752 | { 230400, B230400 }, { -1, B230400 } | |
| 753 | }; | |
| 754 | #endif /* DECODE_BAUD */ | |
| 755 | ||
| 7ba0088d A |
756 | void |
| 757 | TerminalSpeeds(long *ispeed, long *ospeed) | |
| b7080c8e A |
758 | { |
| 759 | #ifdef DECODE_BAUD | |
| 7ba0088d | 760 | struct termspeeds *tp; |
| b7080c8e | 761 | #endif /* DECODE_BAUD */ |
| 7ba0088d | 762 | long in, out; |
| b7080c8e A |
763 | |
| 764 | out = cfgetospeed(&old_tc); | |
| 765 | in = cfgetispeed(&old_tc); | |
| 766 | if (in == 0) | |
| 767 | in = out; | |
| 768 | ||
| 769 | #ifdef DECODE_BAUD | |
| 770 | tp = termspeeds; | |
| 771 | while ((tp->speed != -1) && (tp->value < in)) | |
| 772 | tp++; | |
| 773 | *ispeed = tp->speed; | |
| 774 | ||
| 775 | tp = termspeeds; | |
| 776 | while ((tp->speed != -1) && (tp->value < out)) | |
| 777 | tp++; | |
| 778 | *ospeed = tp->speed; | |
| 779 | #else /* DECODE_BAUD */ | |
| 780 | *ispeed = in; | |
| 781 | *ospeed = out; | |
| 782 | #endif /* DECODE_BAUD */ | |
| 783 | } | |
| 784 | ||
| 7ba0088d A |
785 | int |
| 786 | TerminalWindowSize(long *rows, long *cols) | |
| b7080c8e A |
787 | { |
| 788 | #ifdef TIOCGWINSZ | |
| 789 | struct winsize ws; | |
| 790 | ||
| 791 | if (ioctl(fileno(stdin), TIOCGWINSZ, (char *)&ws) >= 0) { | |
| 792 | *rows = ws.ws_row; | |
| 793 | *cols = ws.ws_col; | |
| 794 | return 1; | |
| 795 | } | |
| 796 | #endif /* TIOCGWINSZ */ | |
| 797 | return 0; | |
| 798 | } | |
| 799 | ||
| 7ba0088d A |
800 | int |
| 801 | NetClose(int fd) | |
| b7080c8e A |
802 | { |
| 803 | return close(fd); | |
| 804 | } | |
| 805 | ||
| 7ba0088d A |
806 | static void |
| 807 | NetNonblockingIO(int fd, int onoff) | |
| b7080c8e A |
808 | { |
| 809 | ioctl(fd, FIONBIO, (char *)&onoff); | |
| 810 | } | |
| 811 | ||
| b7080c8e A |
812 | \f |
| 813 | /* | |
| 814 | * Various signal handling routines. | |
| 815 | */ | |
| 816 | ||
| 7ba0088d A |
817 | /* ARGSUSED */ |
| 818 | static SIG_FUNC_RET | |
| 819 | deadpeer(int sig __unused) | |
| b7080c8e A |
820 | { |
| 821 | setcommandmode(); | |
| 822 | longjmp(peerdied, -1); | |
| 823 | } | |
| 824 | ||
| 7ba0088d A |
825 | /* ARGSUSED */ |
| 826 | SIG_FUNC_RET | |
| 827 | intr(int sig __unused) | |
| b7080c8e A |
828 | { |
| 829 | if (localchars) { | |
| 830 | intp(); | |
| 831 | return; | |
| 832 | } | |
| 833 | setcommandmode(); | |
| 834 | longjmp(toplevel, -1); | |
| 835 | } | |
| 836 | ||
| 7ba0088d A |
837 | /* ARGSUSED */ |
| 838 | SIG_FUNC_RET | |
| 839 | intr2(int sig __unused) | |
| b7080c8e A |
840 | { |
| 841 | if (localchars) { | |
| 842 | #ifdef KLUDGELINEMODE | |
| 843 | if (kludgelinemode) | |
| 844 | sendbrk(); | |
| 845 | else | |
| 846 | #endif | |
| 847 | sendabort(); | |
| 848 | return; | |
| 849 | } | |
| 850 | } | |
| 851 | ||
| 852 | #ifdef SIGTSTP | |
| 7ba0088d A |
853 | /* ARGSUSED */ |
| 854 | SIG_FUNC_RET | |
| 855 | susp(int sig __unused) | |
| b7080c8e A |
856 | { |
| 857 | if ((rlogin != _POSIX_VDISABLE) && rlogin_susp()) | |
| 858 | return; | |
| 859 | if (localchars) | |
| 860 | sendsusp(); | |
| 861 | } | |
| 862 | #endif | |
| 863 | ||
| 864 | #ifdef SIGWINCH | |
| 7ba0088d A |
865 | /* ARGSUSED */ |
| 866 | static SIG_FUNC_RET | |
| 867 | sendwin(int sig __unused) | |
| b7080c8e A |
868 | { |
| 869 | if (connected) { | |
| 870 | sendnaws(); | |
| 871 | } | |
| 872 | } | |
| 873 | #endif | |
| 874 | ||
| 875 | #ifdef SIGINFO | |
| 7ba0088d A |
876 | /* ARGSUSED */ |
| 877 | SIG_FUNC_RET | |
| 878 | ayt(int sig __unused) | |
| b7080c8e A |
879 | { |
| 880 | if (connected) | |
| 881 | sendayt(); | |
| 882 | else | |
| 883 | ayt_status(); | |
| 884 | } | |
| 885 | #endif | |
| 886 | ||
| 887 | \f | |
| 7ba0088d A |
888 | void |
| 889 | sys_telnet_init(void) | |
| b7080c8e A |
890 | { |
| 891 | (void) signal(SIGINT, intr); | |
| 892 | (void) signal(SIGQUIT, intr2); | |
| 893 | (void) signal(SIGPIPE, deadpeer); | |
| 894 | #ifdef SIGWINCH | |
| 895 | (void) signal(SIGWINCH, sendwin); | |
| 896 | #endif | |
| 897 | #ifdef SIGTSTP | |
| 898 | (void) signal(SIGTSTP, susp); | |
| 899 | #endif | |
| 900 | #ifdef SIGINFO | |
| 901 | (void) signal(SIGINFO, ayt); | |
| 902 | #endif | |
| 903 | ||
| 904 | setconnmode(0); | |
| 905 | ||
| 906 | NetNonblockingIO(net, 1); | |
| 907 | ||
| b7080c8e A |
908 | #if defined(SO_OOBINLINE) |
| 909 | if (SetSockOpt(net, SOL_SOCKET, SO_OOBINLINE, 1) == -1) { | |
| 910 | perror("SetSockOpt"); | |
| 911 | } | |
| 912 | #endif /* defined(SO_OOBINLINE) */ | |
| 913 | } | |
| 914 | ||
| 915 | /* | |
| 916 | * Process rings - | |
| 917 | * | |
| 918 | * This routine tries to fill up/empty our various rings. | |
| 919 | * | |
| 920 | * The parameter specifies whether this is a poll operation, | |
| 921 | * or a block-until-something-happens operation. | |
| 922 | * | |
| 923 | * The return value is 1 if something happened, 0 if not. | |
| 924 | */ | |
| 925 | ||
| 7ba0088d A |
926 | int |
| 927 | process_rings(int netin, int netout, int netex, int ttyin, int ttyout, int poll) | |
| b7080c8e | 928 | { |
| 7ba0088d | 929 | int c; |
| b7080c8e | 930 | int returnValue = 0; |
| 7ba0088d A |
931 | static struct timeval TimeValue = { 0, 0 }; |
| 932 | int maxfd = -1; | |
| 933 | int tmp; | |
| 934 | ||
| 935 | if ((netout || netin || netex) && net > maxfd) | |
| 936 | maxfd = net; | |
| 937 | ||
| 938 | if (ttyout && tout > maxfd) | |
| 939 | maxfd = tout; | |
| 940 | if (ttyin && tin > maxfd) | |
| 941 | maxfd = tin; | |
| 942 | tmp = howmany(maxfd+1, NFDBITS) * sizeof(fd_mask); | |
| 943 | if (tmp > fdsn) { | |
| 944 | if (ibitsp) | |
| 945 | free(ibitsp); | |
| 946 | if (obitsp) | |
| 947 | free(obitsp); | |
| 948 | if (xbitsp) | |
| 949 | free(xbitsp); | |
| 950 | ||
| 951 | fdsn = tmp; | |
| 952 | if ((ibitsp = (fd_set *)malloc(fdsn)) == NULL) | |
| 953 | err(1, "malloc"); | |
| 954 | if ((obitsp = (fd_set *)malloc(fdsn)) == NULL) | |
| 955 | err(1, "malloc"); | |
| 956 | if ((xbitsp = (fd_set *)malloc(fdsn)) == NULL) | |
| 957 | err(1, "malloc"); | |
| 958 | memset(ibitsp, 0, fdsn); | |
| 959 | memset(obitsp, 0, fdsn); | |
| 960 | memset(xbitsp, 0, fdsn); | |
| b7080c8e | 961 | } |
| 7ba0088d A |
962 | |
| 963 | if (netout) | |
| 964 | FD_SET(net, obitsp); | |
| 965 | if (ttyout) | |
| 966 | FD_SET(tout, obitsp); | |
| 967 | if (ttyin) | |
| 968 | FD_SET(tin, ibitsp); | |
| 969 | if (netin) | |
| 970 | FD_SET(net, ibitsp); | |
| 971 | if (netex) | |
| 972 | FD_SET(net, xbitsp); | |
| 973 | if ((c = select(maxfd + 1, ibitsp, obitsp, xbitsp, | |
| 974 | (poll == 0)? (struct timeval *)0 : &TimeValue)) < 0) { | |
| b7080c8e A |
975 | if (c == -1) { |
| 976 | /* | |
| 977 | * we can get EINTR if we are in line mode, | |
| 978 | * and the user does an escape (TSTP), or | |
| 979 | * some other signal generator. | |
| 980 | */ | |
| 981 | if (errno == EINTR) { | |
| 982 | return 0; | |
| 983 | } | |
| b7080c8e | 984 | /* I don't like this, does it ever happen? */ |
| 7ba0088d | 985 | printf("sleep(5) from telnet, after select: %s\r\n", strerror(errno)); |
| b7080c8e A |
986 | sleep(5); |
| 987 | } | |
| 988 | return 0; | |
| 989 | } | |
| 990 | ||
| 991 | /* | |
| 992 | * Any urgent data? | |
| 993 | */ | |
| 7ba0088d A |
994 | if (FD_ISSET(net, xbitsp)) { |
| 995 | FD_CLR(net, xbitsp); | |
| b7080c8e A |
996 | SYNCHing = 1; |
| 997 | (void) ttyflush(1); /* flush already enqueued data */ | |
| 998 | } | |
| 999 | ||
| 1000 | /* | |
| 1001 | * Something to read from the network... | |
| 1002 | */ | |
| 7ba0088d | 1003 | if (FD_ISSET(net, ibitsp)) { |
| b7080c8e A |
1004 | int canread; |
| 1005 | ||
| 7ba0088d | 1006 | FD_CLR(net, ibitsp); |
| b7080c8e A |
1007 | canread = ring_empty_consecutive(&netiring); |
| 1008 | #if !defined(SO_OOBINLINE) | |
| 1009 | /* | |
| 1010 | * In 4.2 (and some early 4.3) systems, the | |
| 1011 | * OOB indication and data handling in the kernel | |
| 1012 | * is such that if two separate TCP Urgent requests | |
| 1013 | * come in, one byte of TCP data will be overlaid. | |
| 1014 | * This is fatal for Telnet, but we try to live | |
| 1015 | * with it. | |
| 1016 | * | |
| 1017 | * In addition, in 4.2 (and...), a special protocol | |
| 1018 | * is needed to pick up the TCP Urgent data in | |
| 1019 | * the correct sequence. | |
| 1020 | * | |
| 1021 | * What we do is: if we think we are in urgent | |
| 1022 | * mode, we look to see if we are "at the mark". | |
| 1023 | * If we are, we do an OOB receive. If we run | |
| 1024 | * this twice, we will do the OOB receive twice, | |
| 1025 | * but the second will fail, since the second | |
| 1026 | * time we were "at the mark", but there wasn't | |
| 1027 | * any data there (the kernel doesn't reset | |
| 1028 | * "at the mark" until we do a normal read). | |
| 1029 | * Once we've read the OOB data, we go ahead | |
| 1030 | * and do normal reads. | |
| 1031 | * | |
| 1032 | * There is also another problem, which is that | |
| 1033 | * since the OOB byte we read doesn't put us | |
| 1034 | * out of OOB state, and since that byte is most | |
| 1035 | * likely the TELNET DM (data mark), we would | |
| 1036 | * stay in the TELNET SYNCH (SYNCHing) state. | |
| 1037 | * So, clocks to the rescue. If we've "just" | |
| 1038 | * received a DM, then we test for the | |
| 1039 | * presence of OOB data when the receive OOB | |
| 1040 | * fails (and AFTER we did the normal mode read | |
| 1041 | * to clear "at the mark"). | |
| 1042 | */ | |
| 1043 | if (SYNCHing) { | |
| 1044 | int atmark; | |
| 1045 | static int bogus_oob = 0, first = 1; | |
| 1046 | ||
| 1047 | ioctl(net, SIOCATMARK, (char *)&atmark); | |
| 1048 | if (atmark) { | |
| 1049 | c = recv(net, netiring.supply, canread, MSG_OOB); | |
| 1050 | if ((c == -1) && (errno == EINVAL)) { | |
| 1051 | c = recv(net, netiring.supply, canread, 0); | |
| 1052 | if (clocks.didnetreceive < clocks.gotDM) { | |
| 1053 | SYNCHing = stilloob(net); | |
| 1054 | } | |
| 1055 | } else if (first && c > 0) { | |
| 1056 | /* | |
| 1057 | * Bogosity check. Systems based on 4.2BSD | |
| 1058 | * do not return an error if you do a second | |
| 1059 | * recv(MSG_OOB). So, we do one. If it | |
| 1060 | * succeeds and returns exactly the same | |
| 1061 | * data, then assume that we are running | |
| 1062 | * on a broken system and set the bogus_oob | |
| 1063 | * flag. (If the data was different, then | |
| 1064 | * we probably got some valid new data, so | |
| 1065 | * increment the count...) | |
| 1066 | */ | |
| 1067 | int i; | |
| 1068 | i = recv(net, netiring.supply + c, canread - c, MSG_OOB); | |
| 1069 | if (i == c && | |
| 7ba0088d | 1070 | memcmp(netiring.supply, netiring.supply + c, i) == 0) { |
| b7080c8e A |
1071 | bogus_oob = 1; |
| 1072 | first = 0; | |
| 1073 | } else if (i < 0) { | |
| 1074 | bogus_oob = 0; | |
| 1075 | first = 0; | |
| 1076 | } else | |
| 1077 | c += i; | |
| 1078 | } | |
| 1079 | if (bogus_oob && c > 0) { | |
| 1080 | int i; | |
| 1081 | /* | |
| 1082 | * Bogosity. We have to do the read | |
| 1083 | * to clear the atmark to get out of | |
| 1084 | * an infinate loop. | |
| 1085 | */ | |
| 1086 | i = read(net, netiring.supply + c, canread - c); | |
| 1087 | if (i > 0) | |
| 1088 | c += i; | |
| 1089 | } | |
| 1090 | } else { | |
| 1091 | c = recv(net, netiring.supply, canread, 0); | |
| 1092 | } | |
| 1093 | } else { | |
| 1094 | c = recv(net, netiring.supply, canread, 0); | |
| 1095 | } | |
| 1096 | settimer(didnetreceive); | |
| 1097 | #else /* !defined(SO_OOBINLINE) */ | |
| 1098 | c = recv(net, (char *)netiring.supply, canread, 0); | |
| 1099 | #endif /* !defined(SO_OOBINLINE) */ | |
| 1100 | if (c < 0 && errno == EWOULDBLOCK) { | |
| 1101 | c = 0; | |
| 1102 | } else if (c <= 0) { | |
| 1103 | return -1; | |
| 1104 | } | |
| 1105 | if (netdata) { | |
| 1106 | Dump('<', netiring.supply, c); | |
| 1107 | } | |
| 1108 | if (c) | |
| 1109 | ring_supplied(&netiring, c); | |
| 1110 | returnValue = 1; | |
| 1111 | } | |
| 1112 | ||
| 1113 | /* | |
| 1114 | * Something to read from the tty... | |
| 1115 | */ | |
| 7ba0088d A |
1116 | if (FD_ISSET(tin, ibitsp)) { |
| 1117 | FD_CLR(tin, ibitsp); | |
| b7080c8e A |
1118 | c = TerminalRead(ttyiring.supply, ring_empty_consecutive(&ttyiring)); |
| 1119 | if (c < 0 && errno == EIO) | |
| 1120 | c = 0; | |
| 1121 | if (c < 0 && errno == EWOULDBLOCK) { | |
| 1122 | c = 0; | |
| 1123 | } else { | |
| 1124 | /* EOF detection for line mode!!!! */ | |
| 1125 | if ((c == 0) && MODE_LOCAL_CHARS(globalmode) && isatty(tin)) { | |
| 1126 | /* must be an EOF... */ | |
| 1127 | *ttyiring.supply = termEofChar; | |
| 1128 | c = 1; | |
| 1129 | } | |
| 1130 | if (c <= 0) { | |
| 1131 | return -1; | |
| 1132 | } | |
| 1133 | if (termdata) { | |
| 1134 | Dump('<', ttyiring.supply, c); | |
| 1135 | } | |
| 1136 | ring_supplied(&ttyiring, c); | |
| 1137 | } | |
| 1138 | returnValue = 1; /* did something useful */ | |
| 1139 | } | |
| 1140 | ||
| 7ba0088d A |
1141 | if (FD_ISSET(net, obitsp)) { |
| 1142 | FD_CLR(net, obitsp); | |
| b7080c8e A |
1143 | returnValue |= netflush(); |
| 1144 | } | |
| 7ba0088d A |
1145 | if (FD_ISSET(tout, obitsp)) { |
| 1146 | FD_CLR(tout, obitsp); | |
| b7080c8e A |
1147 | returnValue |= (ttyflush(SYNCHing|flushout) > 0); |
| 1148 | } | |
| 1149 | ||
| 1150 | return returnValue; | |
| 1151 | } |