| 1 | /* |
| 2 | * Copyright (c) 1989 Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * %sccs.include.redist.c% |
| 6 | */ |
| 7 | |
| 8 | #ifndef lint |
| 9 | static char sccsid[] = "@(#)sys_term.c 5.8 (Berkeley) %G%"; |
| 10 | #endif /* not lint */ |
| 11 | |
| 12 | #include "telnetd.h" |
| 13 | #include "pathnames.h" |
| 14 | |
| 15 | #ifdef NEWINIT |
| 16 | #include <initreq.h> |
| 17 | #else /* NEWINIT*/ |
| 18 | #include <utmp.h> |
| 19 | struct utmp wtmp; |
| 20 | |
| 21 | # ifndef CRAY |
| 22 | char wtmpf[] = "/usr/adm/wtmp"; |
| 23 | char utmpf[] = "/etc/utmp"; |
| 24 | # else /* CRAY */ |
| 25 | char wtmpf[] = "/etc/wtmp"; |
| 26 | # endif /* CRAY */ |
| 27 | #endif /* NEWINIT */ |
| 28 | |
| 29 | #define SCPYN(a, b) (void) strncpy(a, b, sizeof(a)) |
| 30 | #define SCMPN(a, b) strncmp(a, b, sizeof(a)) |
| 31 | |
| 32 | #ifdef STREAMS |
| 33 | #include <sys/stream.h> |
| 34 | #endif |
| 35 | #include <sys/tty.h> |
| 36 | #ifdef t_erase |
| 37 | #undef t_erase |
| 38 | #undef t_kill |
| 39 | #undef t_intrc |
| 40 | #undef t_quitc |
| 41 | #undef t_startc |
| 42 | #undef t_stopc |
| 43 | #undef t_eofc |
| 44 | #undef t_brkc |
| 45 | #undef t_suspc |
| 46 | #undef t_dsuspc |
| 47 | #undef t_rprntc |
| 48 | #undef t_flushc |
| 49 | #undef t_werasc |
| 50 | #undef t_lnextc |
| 51 | #endif |
| 52 | |
| 53 | #if defined(UNICOS5) && defined(CRAY2) && !defined(EXTPROC) |
| 54 | # define EXTPROC 0400 |
| 55 | #endif |
| 56 | |
| 57 | #ifndef USE_TERMIO |
| 58 | struct termbuf { |
| 59 | struct sgttyb sg; |
| 60 | struct tchars tc; |
| 61 | struct ltchars ltc; |
| 62 | int state; |
| 63 | int lflags; |
| 64 | } termbuf, termbuf2; |
| 65 | #else /* USE_TERMIO */ |
| 66 | # ifdef SYSV_TERMIO |
| 67 | # define termios termio |
| 68 | # endif |
| 69 | # ifndef TCSETA |
| 70 | # ifdef TCSETS |
| 71 | # define TCSETA TCSETS |
| 72 | # define TCGETA TCGETS |
| 73 | # else |
| 74 | # define TCSETA TIOCSETA |
| 75 | # define TCGETA TIOCGETA |
| 76 | # endif |
| 77 | # endif /* 4.4BSD */ |
| 78 | struct termios termbuf, termbuf2; /* pty control structure */ |
| 79 | #endif /* USE_TERMIO */ |
| 80 | |
| 81 | /* |
| 82 | * init_termbuf() |
| 83 | * copy_termbuf(cp) |
| 84 | * set_termbuf() |
| 85 | * |
| 86 | * These three routines are used to get and set the "termbuf" structure |
| 87 | * to and from the kernel. init_termbuf() gets the current settings. |
| 88 | * copy_termbuf() hands in a new "termbuf" to write to the kernel, and |
| 89 | * set_termbuf() writes the structure into the kernel. |
| 90 | */ |
| 91 | |
| 92 | init_termbuf() |
| 93 | { |
| 94 | #ifndef USE_TERMIO |
| 95 | (void) ioctl(pty, TIOCGETP, (char *)&termbuf.sg); |
| 96 | (void) ioctl(pty, TIOCGETC, (char *)&termbuf.tc); |
| 97 | (void) ioctl(pty, TIOCGLTC, (char *)&termbuf.ltc); |
| 98 | # ifdef TIOCGSTATE |
| 99 | (void) ioctl(pty, TIOCGSTATE, (char *)&termbuf.state); |
| 100 | # endif |
| 101 | #else |
| 102 | (void) ioctl(pty, TCGETA, (char *)&termbuf); |
| 103 | #endif |
| 104 | termbuf2 = termbuf; |
| 105 | } |
| 106 | |
| 107 | #if defined(LINEMODE) && defined(TIOCPKT_IOCTL) |
| 108 | copy_termbuf(cp, len) |
| 109 | char *cp; |
| 110 | int len; |
| 111 | { |
| 112 | if (len > sizeof(termbuf)) |
| 113 | len = sizeof(termbuf); |
| 114 | bcopy(cp, (char *)&termbuf, len); |
| 115 | termbuf2 = termbuf; |
| 116 | } |
| 117 | #endif /* defined(LINEMODE) && defined(TIOCPKT_IOCTL) */ |
| 118 | |
| 119 | set_termbuf() |
| 120 | { |
| 121 | /* |
| 122 | * Only make the necessary changes. |
| 123 | */ |
| 124 | #ifndef USE_TERMIO |
| 125 | if (bcmp((char *)&termbuf.sg, (char *)&termbuf2.sg, sizeof(termbuf.sg))) |
| 126 | (void) ioctl(pty, TIOCSETP, (char *)&termbuf.sg); |
| 127 | if (bcmp((char *)&termbuf.tc, (char *)&termbuf2.tc, sizeof(termbuf.tc))) |
| 128 | (void) ioctl(pty, TIOCSETC, (char *)&termbuf.tc); |
| 129 | if (bcmp((char *)&termbuf.ltc, (char *)&termbuf2.ltc, |
| 130 | sizeof(termbuf.ltc))) |
| 131 | (void) ioctl(pty, TIOCSLTC, (char *)&termbuf.ltc); |
| 132 | if (termbuf.lflags != termbuf2.lflags) |
| 133 | (void) ioctl(pty, TIOCLSET, (char *)&termbuf.lflags); |
| 134 | #else /* USE_TERMIO */ |
| 135 | if (bcmp((char *)&termbuf, (char *)&termbuf2, sizeof(termbuf))) |
| 136 | (void) ioctl(pty, TCSETA, (char *)&termbuf); |
| 137 | # if defined(CRAY2) && defined(UNCIOS5) |
| 138 | needtermstat = 1; |
| 139 | # endif |
| 140 | #endif /* USE_TERMIO */ |
| 141 | } |
| 142 | |
| 143 | |
| 144 | /* |
| 145 | * spcset(func, valp, valpp) |
| 146 | * |
| 147 | * This function takes various special characters (func), and |
| 148 | * sets *valp to the current value of that character, and |
| 149 | * *valpp to point to where in the "termbuf" structure that |
| 150 | * value is kept. |
| 151 | * |
| 152 | * It returns the SLC_ level of support for this function. |
| 153 | */ |
| 154 | |
| 155 | #ifndef USE_TERMIO |
| 156 | spcset(func, valp, valpp) |
| 157 | int func; |
| 158 | cc_t *valp; |
| 159 | cc_t **valpp; |
| 160 | { |
| 161 | switch(func) { |
| 162 | case SLC_EOF: |
| 163 | *valp = termbuf.tc.t_eofc; |
| 164 | *valpp = (cc_t *)&termbuf.tc.t_eofc; |
| 165 | return(SLC_VARIABLE); |
| 166 | case SLC_EC: |
| 167 | *valp = termbuf.sg.sg_erase; |
| 168 | *valpp = (cc_t *)&termbuf.sg.sg_erase; |
| 169 | return(SLC_VARIABLE); |
| 170 | case SLC_EL: |
| 171 | *valp = termbuf.sg.sg_kill; |
| 172 | *valpp = (cc_t *)&termbuf.sg.sg_kill; |
| 173 | return(SLC_VARIABLE); |
| 174 | case SLC_IP: |
| 175 | *valp = termbuf.tc.t_intrc; |
| 176 | *valpp = (cc_t *)&termbuf.tc.t_intrc; |
| 177 | return(SLC_VARIABLE|SLC_FLUSHIN|SLC_FLUSHOUT); |
| 178 | case SLC_ABORT: |
| 179 | *valp = termbuf.tc.t_quitc; |
| 180 | *valpp = (cc_t *)&termbuf.tc.t_quitc; |
| 181 | return(SLC_VARIABLE|SLC_FLUSHIN|SLC_FLUSHOUT); |
| 182 | case SLC_XON: |
| 183 | *valp = termbuf.tc.t_startc; |
| 184 | *valpp = (cc_t *)&termbuf.tc.t_startc; |
| 185 | return(SLC_VARIABLE); |
| 186 | case SLC_XOFF: |
| 187 | *valp = termbuf.tc.t_stopc; |
| 188 | *valpp = (cc_t *)&termbuf.tc.t_stopc; |
| 189 | return(SLC_VARIABLE); |
| 190 | case SLC_AO: |
| 191 | *valp = termbuf.ltc.t_flushc; |
| 192 | *valpp = (cc_t *)&termbuf.ltc.t_flushc; |
| 193 | return(SLC_VARIABLE); |
| 194 | case SLC_SUSP: |
| 195 | *valp = termbuf.ltc.t_suspc; |
| 196 | *valpp = (cc_t *)&termbuf.ltc.t_suspc; |
| 197 | return(SLC_VARIABLE); |
| 198 | case SLC_EW: |
| 199 | *valp = termbuf.ltc.t_werasc; |
| 200 | *valpp = (cc_t *)&termbuf.ltc.t_werasc; |
| 201 | return(SLC_VARIABLE); |
| 202 | case SLC_RP: |
| 203 | *valp = termbuf.ltc.t_rprntc; |
| 204 | *valpp = (cc_t *)&termbuf.ltc.t_rprntc; |
| 205 | return(SLC_VARIABLE); |
| 206 | case SLC_LNEXT: |
| 207 | *valp = termbuf.ltc.t_lnextc; |
| 208 | *valpp = (cc_t *)&termbuf.ltc.t_lnextc; |
| 209 | return(SLC_VARIABLE); |
| 210 | case SLC_FORW1: |
| 211 | *valp = termbuf.tc.t_brkc; |
| 212 | *valpp = (cc_t *)&termbuf.ltc.t_lnextc; |
| 213 | return(SLC_VARIABLE); |
| 214 | case SLC_BRK: |
| 215 | case SLC_SYNCH: |
| 216 | case SLC_AYT: |
| 217 | case SLC_EOR: |
| 218 | *valp = (cc_t)0; |
| 219 | *valpp = (cc_t *)0; |
| 220 | return(SLC_DEFAULT); |
| 221 | default: |
| 222 | *valp = (cc_t)0; |
| 223 | *valpp = (cc_t *)0; |
| 224 | return(SLC_NOSUPPORT); |
| 225 | } |
| 226 | } |
| 227 | |
| 228 | #else /* USE_TERMIO */ |
| 229 | |
| 230 | spcset(func, valp, valpp) |
| 231 | int func; |
| 232 | cc_t *valp; |
| 233 | cc_t **valpp; |
| 234 | { |
| 235 | |
| 236 | #define setval(a, b) *valp = termbuf.c_cc[a]; \ |
| 237 | *valpp = &termbuf.c_cc[a]; \ |
| 238 | return(b); |
| 239 | #define defval(a) *valp = ((cc_t)a); *valpp = (cc_t *)0; return(SLC_DEFAULT); |
| 240 | |
| 241 | switch(func) { |
| 242 | case SLC_EOF: |
| 243 | setval(VEOF, SLC_VARIABLE); |
| 244 | case SLC_EC: |
| 245 | setval(VERASE, SLC_VARIABLE); |
| 246 | case SLC_EL: |
| 247 | setval(VKILL, SLC_VARIABLE); |
| 248 | case SLC_IP: |
| 249 | setval(VINTR, SLC_VARIABLE|SLC_FLUSHIN|SLC_FLUSHOUT); |
| 250 | case SLC_ABORT: |
| 251 | setval(VQUIT, SLC_VARIABLE|SLC_FLUSHIN|SLC_FLUSHOUT); |
| 252 | case SLC_XON: |
| 253 | #ifdef VSTART |
| 254 | setval(VSTART, SLC_VARIABLE); |
| 255 | #else |
| 256 | defval(0x13); |
| 257 | #endif |
| 258 | case SLC_XOFF: |
| 259 | #ifdef VSTOP |
| 260 | setval(VSTOP, SLC_VARIABLE); |
| 261 | #else |
| 262 | defval(0x11); |
| 263 | #endif |
| 264 | case SLC_EW: |
| 265 | #ifdef VWERASE |
| 266 | setval(VWERASE, SLC_VARIABLE); |
| 267 | #else |
| 268 | defval(0); |
| 269 | #endif |
| 270 | case SLC_RP: |
| 271 | #ifdef VREPRINT |
| 272 | setval(VREPRINT, SLC_VARIABLE); |
| 273 | #else |
| 274 | defval(0); |
| 275 | #endif |
| 276 | case SLC_LNEXT: |
| 277 | #ifdef VLNEXT |
| 278 | setval(VLNEXT, SLC_VARIABLE); |
| 279 | #else |
| 280 | defval(0); |
| 281 | #endif |
| 282 | case SLC_AO: |
| 283 | #ifdef VFLUSHO |
| 284 | setval(VFLUSHO, SLC_VARIABLE|SLC_FLUSHOUT); |
| 285 | #else |
| 286 | defval(0); |
| 287 | #endif |
| 288 | case SLC_SUSP: |
| 289 | #ifdef VSUSP |
| 290 | setval(VSUSP, SLC_VARIABLE|SLC_FLUSHIN); |
| 291 | #else |
| 292 | defval(0); |
| 293 | #endif |
| 294 | #ifdef VEOL |
| 295 | case SLC_FORW1: |
| 296 | setval(VEOL, SLC_VARIABLE); |
| 297 | #endif |
| 298 | #ifdef VEOL2 |
| 299 | case SLC_FORW2: |
| 300 | setval(VEOL2, SLC_VARIABLE); |
| 301 | #endif |
| 302 | |
| 303 | case SLC_BRK: |
| 304 | case SLC_SYNCH: |
| 305 | case SLC_AYT: |
| 306 | case SLC_EOR: |
| 307 | defval(0); |
| 308 | |
| 309 | default: |
| 310 | *valp = 0; |
| 311 | *valpp = 0; |
| 312 | return(SLC_NOSUPPORT); |
| 313 | } |
| 314 | } |
| 315 | #endif /* USE_TERMIO */ |
| 316 | |
| 317 | #ifdef CRAY |
| 318 | /* |
| 319 | * getnpty() |
| 320 | * |
| 321 | * Return the number of pty's configured into the system. |
| 322 | */ |
| 323 | getnpty() |
| 324 | { |
| 325 | #ifdef _SC_CRAY_NPTY |
| 326 | return sysconf(_SC_CRAY_NPTY); |
| 327 | #else |
| 328 | return 128; |
| 329 | #endif /* _SC_CRAY_NPTY */ |
| 330 | } |
| 331 | #endif /* CRAY */ |
| 332 | |
| 333 | /* |
| 334 | * getpty() |
| 335 | * |
| 336 | * Allocate a pty. As a side effect, the external character |
| 337 | * array "line" contains the name of the slave side. |
| 338 | * |
| 339 | * Returns the file descriptor of the opened pty. |
| 340 | */ |
| 341 | char *line = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"; |
| 342 | |
| 343 | getpty() |
| 344 | { |
| 345 | register int p; |
| 346 | #ifndef CRAY |
| 347 | register char c, *p1, *p2; |
| 348 | register int i; |
| 349 | |
| 350 | (void) sprintf(line, "/dev/ptyXX"); |
| 351 | p1 = &line[8]; |
| 352 | p2 = &line[9]; |
| 353 | |
| 354 | for (c = 'p'; c <= 's'; c++) { |
| 355 | struct stat stb; |
| 356 | |
| 357 | *p1 = c; |
| 358 | *p2 = '0'; |
| 359 | if (stat(line, &stb) < 0) |
| 360 | break; |
| 361 | for (i = 0; i < 16; i++) { |
| 362 | *p2 = "0123456789abcdef"[i]; |
| 363 | p = open(line, 2); |
| 364 | if (p > 0) { |
| 365 | line[5] = 't'; |
| 366 | return(p); |
| 367 | } |
| 368 | } |
| 369 | } |
| 370 | #else /* CRAY */ |
| 371 | register int npty; |
| 372 | extern lowpty, highpty; |
| 373 | |
| 374 | for (npty = lowpty; npty <= highpty; npty++) { |
| 375 | (void) sprintf(line, "/dev/pty/%03d", npty); |
| 376 | p = open(line, 2); |
| 377 | if (p < 0) |
| 378 | continue; |
| 379 | (void) sprintf(line, "/dev/ttyp%03d", npty); |
| 380 | if (access(line, 6) == 0) |
| 381 | return(p); |
| 382 | else { |
| 383 | /* no tty side to pty so skip it */ |
| 384 | (void) close(p); |
| 385 | } |
| 386 | } |
| 387 | #endif /* CRAY */ |
| 388 | return(-1); |
| 389 | } |
| 390 | |
| 391 | #ifdef LINEMODE |
| 392 | /* |
| 393 | * tty_flowmode() Find out if flow control is enabled or disabled. |
| 394 | * tty_linemode() Find out if linemode (external processing) is enabled. |
| 395 | * tty_setlinemod(on) Turn on/off linemode. |
| 396 | * tty_isecho() Find out if echoing is turned on. |
| 397 | * tty_setecho(on) Enable/disable character echoing. |
| 398 | * tty_israw() Find out if terminal is in RAW mode. |
| 399 | * tty_binaryin(on) Turn on/off BINARY on input. |
| 400 | * tty_binaryout(on) Turn on/off BINARY on output. |
| 401 | * tty_isediting() Find out if line editing is enabled. |
| 402 | * tty_istrapsig() Find out if signal trapping is enabled. |
| 403 | * tty_setedit(on) Turn on/off line editing. |
| 404 | * tty_setsig(on) Turn on/off signal trapping. |
| 405 | * tty_issofttab() Find out if tab expansion is enabled. |
| 406 | * tty_setsofttab(on) Turn on/off soft tab expansion. |
| 407 | * tty_islitecho() Find out if typed control chars are echoed literally |
| 408 | * tty_setlitecho() Turn on/off literal echo of control chars |
| 409 | * tty_tspeed(val) Set transmit speed to val. |
| 410 | * tty_rspeed(val) Set receive speed to val. |
| 411 | */ |
| 412 | |
| 413 | tty_flowmode() |
| 414 | { |
| 415 | #ifndef USE_TERMIO |
| 416 | return((termbuf.tc.t_startc) > 0 && (termbuf.tc.t_stopc) > 0); |
| 417 | #else |
| 418 | return(termbuf.c_iflag & IXON ? 1 : 0); |
| 419 | #endif |
| 420 | } |
| 421 | |
| 422 | tty_linemode() |
| 423 | { |
| 424 | #ifndef USE_TERMIO |
| 425 | return(termbuf.state & TS_EXTPROC); |
| 426 | #else |
| 427 | return(termbuf.c_lflag & EXTPROC); |
| 428 | #endif |
| 429 | } |
| 430 | |
| 431 | tty_setlinemode(on) |
| 432 | int on; |
| 433 | { |
| 434 | #ifdef TIOCEXT |
| 435 | (void) ioctl(pty, TIOCEXT, (char *)&on); |
| 436 | #else /* !TIOCEXT */ |
| 437 | #ifdef EXTPROC |
| 438 | if (on) |
| 439 | termbuf.c_lflag |= EXTPROC; |
| 440 | else |
| 441 | termbuf.c_lflag &= ~EXTPROC; |
| 442 | #endif |
| 443 | set_termbuf(); |
| 444 | #endif /* TIOCEXT */ |
| 445 | } |
| 446 | |
| 447 | tty_isecho() |
| 448 | { |
| 449 | #ifndef USE_TERMIO |
| 450 | return (termbuf.sg.sg_flags & ECHO); |
| 451 | #else |
| 452 | return (termbuf.c_lflag & ECHO); |
| 453 | #endif |
| 454 | } |
| 455 | #endif /* LINEMODE */ |
| 456 | |
| 457 | tty_setecho(on) |
| 458 | { |
| 459 | #ifndef USE_TERMIO |
| 460 | if (on) |
| 461 | termbuf.sg.sg_flags |= ECHO|CRMOD; |
| 462 | else |
| 463 | termbuf.sg.sg_flags &= ~(ECHO|CRMOD); |
| 464 | #else |
| 465 | if (on) |
| 466 | termbuf.c_lflag |= ECHO; |
| 467 | else |
| 468 | termbuf.c_lflag &= ~ECHO; |
| 469 | #endif |
| 470 | } |
| 471 | |
| 472 | #if defined(LINEMODE) && defined(KLUDGELINEMODE) |
| 473 | tty_israw() |
| 474 | { |
| 475 | #ifndef USE_TERMIO |
| 476 | return(termbuf.sg.sg_flags & RAW); |
| 477 | #else |
| 478 | return(!(termbuf.c_lflag & ICANON)); |
| 479 | #endif |
| 480 | } |
| 481 | #endif /* defined(LINEMODE) && defined(KLUDGELINEMODE) */ |
| 482 | |
| 483 | tty_binaryin(on) |
| 484 | { |
| 485 | #ifndef USE_TERMIO |
| 486 | if (on) |
| 487 | termbuf.lflags |= LPASS8; |
| 488 | else |
| 489 | termbuf.lflags &= ~LPASS8; |
| 490 | #else |
| 491 | if (on) { |
| 492 | termbuf.c_lflag &= ~ISTRIP; |
| 493 | } else { |
| 494 | termbuf.c_lflag |= ISTRIP; |
| 495 | } |
| 496 | #endif |
| 497 | } |
| 498 | |
| 499 | tty_binaryout(on) |
| 500 | { |
| 501 | #ifndef USE_TERMIO |
| 502 | if (on) |
| 503 | termbuf.lflags |= LLITOUT; |
| 504 | else |
| 505 | termbuf.lflags &= ~LLITOUT; |
| 506 | #else |
| 507 | if (on) { |
| 508 | termbuf.c_cflag &= ~(CSIZE|PARENB); |
| 509 | termbuf.c_cflag |= CS8; |
| 510 | termbuf.c_oflag &= ~OPOST; |
| 511 | } else { |
| 512 | termbuf.c_cflag &= ~CSIZE; |
| 513 | termbuf.c_cflag |= CS7|PARENB; |
| 514 | termbuf.c_oflag |= OPOST; |
| 515 | } |
| 516 | #endif |
| 517 | } |
| 518 | |
| 519 | tty_isbinaryin() |
| 520 | { |
| 521 | #ifndef USE_TERMIO |
| 522 | return(termbuf.lflags & LPASS8); |
| 523 | #else |
| 524 | return(!(termbuf.c_iflag & ISTRIP)); |
| 525 | #endif |
| 526 | } |
| 527 | |
| 528 | tty_isbinaryout() |
| 529 | { |
| 530 | #ifndef USE_TERMIO |
| 531 | return(termbuf.lflags & LLITOUT); |
| 532 | #else |
| 533 | return(!(termbuf.c_oflag&OPOST)); |
| 534 | #endif |
| 535 | } |
| 536 | |
| 537 | #ifdef LINEMODE |
| 538 | tty_isediting() |
| 539 | { |
| 540 | #ifndef USE_TERMIO |
| 541 | return(!(termbuf.sg.sg_flags & (CBREAK|RAW))); |
| 542 | #else |
| 543 | return(termbuf.c_lflag & ICANON); |
| 544 | #endif |
| 545 | } |
| 546 | |
| 547 | tty_istrapsig() |
| 548 | { |
| 549 | #ifndef USE_TERMIO |
| 550 | return(!(termbuf.sg.sg_flags&RAW)); |
| 551 | #else |
| 552 | return(termbuf.c_lflag & ISIG); |
| 553 | #endif |
| 554 | } |
| 555 | |
| 556 | tty_setedit(on) |
| 557 | int on; |
| 558 | { |
| 559 | #ifndef USE_TERMIO |
| 560 | if (on) |
| 561 | termbuf.sg.sg_flags &= ~CBREAK; |
| 562 | else |
| 563 | termbuf.sg.sg_flags |= CBREAK; |
| 564 | #else |
| 565 | if (on) |
| 566 | termbuf.c_lflag |= ICANON; |
| 567 | else |
| 568 | termbuf.c_lflag &= ~ICANON; |
| 569 | #endif |
| 570 | } |
| 571 | |
| 572 | tty_setsig(on) |
| 573 | int on; |
| 574 | { |
| 575 | #ifndef USE_TERMIO |
| 576 | if (on) |
| 577 | ; |
| 578 | #else |
| 579 | if (on) |
| 580 | termbuf.c_lflag |= ISIG; |
| 581 | else |
| 582 | termbuf.c_lflag &= ~ISIG; |
| 583 | #endif |
| 584 | } |
| 585 | #endif /* LINEMODE */ |
| 586 | |
| 587 | tty_issofttab() |
| 588 | { |
| 589 | #ifndef USE_TERMIO |
| 590 | return (termbuf.sg.sg_flags & XTABS); |
| 591 | #else |
| 592 | # ifdef OXTABS |
| 593 | return (termbuf.c_oflag & OXTABS); |
| 594 | # endif |
| 595 | # ifdef TABDLY |
| 596 | return ((termbuf.c_oflag & TABDLY) == TAB3); |
| 597 | # endif |
| 598 | #endif |
| 599 | } |
| 600 | |
| 601 | tty_setsofttab(on) |
| 602 | int on; |
| 603 | { |
| 604 | #ifndef USE_TERMIO |
| 605 | if (on) |
| 606 | termbuf.sg.sg_flags |= XTABS; |
| 607 | else |
| 608 | termbuf.sg.sg_flags &= ~XTABS; |
| 609 | #else |
| 610 | if (on) { |
| 611 | # ifdef OXTABS |
| 612 | termbuf.c_oflag |= OXTABS; |
| 613 | # endif |
| 614 | # ifdef TABDLY |
| 615 | termbuf.c_oflag &= ~TABDLY; |
| 616 | termbuf.c_oflag |= TAB3; |
| 617 | # endif |
| 618 | } else { |
| 619 | # ifdef OXTABS |
| 620 | termbuf.c_oflag &= ~OXTABS; |
| 621 | # endif |
| 622 | # ifdef TABDLY |
| 623 | termbuf.c_oflag &= ~TABDLY; |
| 624 | termbuf.c_oflag |= TAB0; |
| 625 | # endif |
| 626 | } |
| 627 | #endif |
| 628 | } |
| 629 | |
| 630 | tty_islitecho() |
| 631 | { |
| 632 | #ifndef USE_TERMIO |
| 633 | return (!(termbuf.sg.sg_flags & CTLECH)); |
| 634 | #else |
| 635 | # ifdef ECHOCTL |
| 636 | return (!(termbuf.c_lflag & ECHOCTL)); |
| 637 | # endif |
| 638 | # ifdef TCTLECH |
| 639 | return (!(termbuf.c_lflag & TCTLECH)); |
| 640 | # endif |
| 641 | # if !defined(ECHOCTL) && !defined(TCTLECH) |
| 642 | return (0); /* assumes ctl chars are echoed '^x' */ |
| 643 | # endif |
| 644 | #endif |
| 645 | } |
| 646 | |
| 647 | tty_setlitecho(on) |
| 648 | int on; |
| 649 | { |
| 650 | #ifndef USE_TERMIO |
| 651 | if (on) |
| 652 | termbuf.sg.sg_flags &= ~CTLECH; |
| 653 | else |
| 654 | termbuf.sg.sg_flags |= CTLECH; |
| 655 | #else |
| 656 | # ifdef ECHOCTL |
| 657 | if (on) |
| 658 | termbuf.c_lflag &= ~ECHOCTL; |
| 659 | else |
| 660 | termbuf.c_lflag |= ECHOCTL; |
| 661 | # endif |
| 662 | # ifdef TCTLECH |
| 663 | if (on) |
| 664 | termbuf.c_lflag &= ~TCTLECH; |
| 665 | else |
| 666 | termbuf.c_lflag |= TCTLECH; |
| 667 | # endif |
| 668 | #endif |
| 669 | } |
| 670 | |
| 671 | /* |
| 672 | * A table of available terminal speeds |
| 673 | */ |
| 674 | struct termspeeds { |
| 675 | int speed; |
| 676 | int value; |
| 677 | } termspeeds[] = { |
| 678 | { 0, B0 }, { 50, B50 }, { 75, B75 }, |
| 679 | { 110, B110 }, { 134, B134 }, { 150, B150 }, |
| 680 | { 200, B200 }, { 300, B300 }, { 600, B600 }, |
| 681 | { 1200, B1200 }, { 1800, B1800 }, { 2400, B2400 }, |
| 682 | { 4800, B4800 }, { 9600, B9600 }, { 19200, B9600 }, |
| 683 | { 38400, B9600 }, { -1, B9600 } |
| 684 | }; |
| 685 | |
| 686 | tty_tspeed(val) |
| 687 | { |
| 688 | register struct termspeeds *tp; |
| 689 | |
| 690 | for (tp = termspeeds; (tp->speed != -1) && (val > tp->speed); tp++) |
| 691 | ; |
| 692 | #ifndef USE_TERMIO |
| 693 | termbuf.sg.sg_ospeed = tp->value; |
| 694 | #else |
| 695 | # ifdef CBAUD |
| 696 | termbuf.c_cflag &= ~CBAUD; |
| 697 | termbuf.c_cflag |= tp->value; |
| 698 | # else |
| 699 | termbuf.c_ospeed = tp->value; |
| 700 | # endif |
| 701 | #endif |
| 702 | } |
| 703 | |
| 704 | tty_rspeed(val) |
| 705 | { |
| 706 | register struct termspeeds *tp; |
| 707 | |
| 708 | for (tp = termspeeds; (tp->speed != -1) && (val > tp->speed); tp++) |
| 709 | ; |
| 710 | #ifndef USE_TERMIO |
| 711 | termbuf.sg.sg_ispeed = tp->value; |
| 712 | #else |
| 713 | # ifdef CBAUD |
| 714 | termbuf.c_cflag &= ~CBAUD; |
| 715 | termbuf.c_cflag |= tp->value; |
| 716 | # else |
| 717 | termbuf.c_ispeed = tp->value; |
| 718 | # endif |
| 719 | #endif |
| 720 | } |
| 721 | |
| 722 | #if defined(CRAY2) && defined(UNICOS5) |
| 723 | tty_isnewmap() |
| 724 | { |
| 725 | return((termbuf.c_oflag & OPOST) && (termbuf.c_oflag & ONLCR) && |
| 726 | !(termbuf.c_oflag & ONLRET)); |
| 727 | } |
| 728 | #endif |
| 729 | |
| 730 | #ifdef CRAY |
| 731 | # ifndef NEWINIT |
| 732 | extern struct utmp wtmp; |
| 733 | extern char wtmpf[]; |
| 734 | # else /* NEWINIT */ |
| 735 | int gotalarm; |
| 736 | /* ARGSUSED */ |
| 737 | void |
| 738 | nologinproc(sig) |
| 739 | int sig; |
| 740 | { |
| 741 | gotalarm++; |
| 742 | } |
| 743 | # endif /* NEWINIT */ |
| 744 | #endif /* CRAY */ |
| 745 | |
| 746 | /* |
| 747 | * getptyslave() |
| 748 | * |
| 749 | * Open the slave side of the pty, and do any initialization |
| 750 | * that is necessary. The return value is a file descriptor |
| 751 | * for the slave side. |
| 752 | */ |
| 753 | getptyslave() |
| 754 | { |
| 755 | register int t = -1; |
| 756 | |
| 757 | #ifndef CRAY |
| 758 | /* |
| 759 | * Disassociate self from control terminal and open ttyp side. |
| 760 | * Set important flags on ttyp and ptyp. |
| 761 | */ |
| 762 | t = open(_PATH_TTY, O_RDWR); |
| 763 | if (t >= 0) { |
| 764 | (void) ioctl(t, TIOCNOTTY, (char *)0); |
| 765 | (void) close(t); |
| 766 | } |
| 767 | |
| 768 | t = open(line, O_RDWR); |
| 769 | if (t < 0) |
| 770 | fatalperror(net, line); |
| 771 | if (fchmod(t, 0)) |
| 772 | fatalperror(net, line); |
| 773 | #if BSD <= 43 |
| 774 | (void) signal(SIGHUP, SIG_IGN); |
| 775 | vhangup(); |
| 776 | (void) signal(SIGHUP, SIG_DFL); |
| 777 | t = open(line, O_RDWR); |
| 778 | if (t < 0) |
| 779 | fatalperror(net, line); |
| 780 | #endif |
| 781 | |
| 782 | init_termbuf(); |
| 783 | #ifndef USE_TERMIO |
| 784 | termbuf.sg.sg_flags |= CRMOD|ANYP|ECHO|XTABS; |
| 785 | termbuf.sg.sg_ospeed = termbuf.sg.sg_ispeed = B9600; |
| 786 | #else |
| 787 | termbuf.c_lflag |= ECHO; |
| 788 | #ifndef OXTABS |
| 789 | #define OXTABS 0 |
| 790 | #endif |
| 791 | termbuf.c_oflag |= ONLCR|OXTABS; |
| 792 | termbuf.c_iflag |= ICRNL; |
| 793 | termbuf.c_iflag &= ~IXOFF; |
| 794 | # ifdef CBAUD |
| 795 | termbuf.c_cflag &= ~CBAUD; |
| 796 | termbuf.c_cflag |= B9600; |
| 797 | # else /* CBAUD */ |
| 798 | termbuf.c_ospeed = termbuf.c_ispeed = B9600; |
| 799 | # endif /* CBAUD */ |
| 800 | #endif |
| 801 | set_termbuf(); |
| 802 | #else /* CRAY */ |
| 803 | (void) chown(line, 0, 0); |
| 804 | (void) chmod(line, 0600); |
| 805 | #endif /* CRAY */ |
| 806 | return(t); |
| 807 | } |
| 808 | |
| 809 | #ifdef NEWINIT |
| 810 | char *gen_id = "fe"; |
| 811 | #endif |
| 812 | |
| 813 | /* |
| 814 | * startslave(t, host) |
| 815 | * |
| 816 | * Given a file descriptor (t) for a tty, and a hostname, do whatever |
| 817 | * is necessary to startup the login process on the slave side of the pty. |
| 818 | */ |
| 819 | |
| 820 | /* ARGSUSED */ |
| 821 | startslave(t, host) |
| 822 | int t; |
| 823 | char *host; |
| 824 | { |
| 825 | register int i; |
| 826 | long time(); |
| 827 | |
| 828 | #ifndef NEWINIT |
| 829 | # ifdef CRAY |
| 830 | utmp_sig_init(); |
| 831 | # endif /* CRAY */ |
| 832 | |
| 833 | if ((i = fork()) < 0) |
| 834 | fatalperror(net, "fork"); |
| 835 | if (i) { |
| 836 | # ifdef CRAY |
| 837 | /* |
| 838 | * Cray parent will create utmp entry for child and send |
| 839 | * signal to child to tell when done. Child waits for signal |
| 840 | * before doing anything important. |
| 841 | */ |
| 842 | register int pid = i; |
| 843 | |
| 844 | setpgrp(); |
| 845 | utmp_sig_reset(); /* reset handler to default */ |
| 846 | /* |
| 847 | * Create utmp entry for child |
| 848 | */ |
| 849 | (void) time(&wtmp.ut_time); |
| 850 | wtmp.ut_type = LOGIN_PROCESS; |
| 851 | wtmp.ut_pid = pid; |
| 852 | SCPYN(wtmp.ut_user, "LOGIN"); |
| 853 | SCPYN(wtmp.ut_host, host); |
| 854 | SCPYN(wtmp.ut_line, line + sizeof("/dev/") - 1); |
| 855 | SCPYN(wtmp.ut_id, wtmp.ut_line+3); |
| 856 | pututline(&wtmp); |
| 857 | endutent(); |
| 858 | if ((i = open(wtmpf, O_WRONLY|O_APPEND)) >= 0) { |
| 859 | (void) write(i, (char *)&wtmp, sizeof(struct utmp)); |
| 860 | (void) close(i); |
| 861 | } |
| 862 | utmp_sig_notify(pid); |
| 863 | # endif /* CRAY */ |
| 864 | (void) close(t); |
| 865 | } else { |
| 866 | start_login(t, host); |
| 867 | /*NOTREACHED*/ |
| 868 | } |
| 869 | #else /* NEWINIT */ |
| 870 | |
| 871 | extern char *ptyip; |
| 872 | struct init_request request; |
| 873 | void nologinproc(); |
| 874 | register int n; |
| 875 | |
| 876 | /* |
| 877 | * Init will start up login process if we ask nicely. We only wait |
| 878 | * for it to start up and begin normal telnet operation. |
| 879 | */ |
| 880 | if ((i = open(INIT_FIFO, O_WRONLY)) < 0) { |
| 881 | char tbuf[128]; |
| 882 | (void) sprintf(tbuf, "Can't open %s\n", INIT_FIFO); |
| 883 | fatalperror(net, tbuf); |
| 884 | } |
| 885 | memset((char *)&request, 0, sizeof(request)); |
| 886 | request.magic = INIT_MAGIC; |
| 887 | SCPYN(request.gen_id, gen_id); |
| 888 | SCPYN(request.tty_id, &line[8]); |
| 889 | SCPYN(request.host, host); |
| 890 | SCPYN(request.term_type, terminaltype); |
| 891 | #if !defined(UNICOS5) |
| 892 | request.signal = SIGCLD; |
| 893 | request.pid = getpid(); |
| 894 | #endif |
| 895 | #ifdef BFTPDAEMON |
| 896 | /* |
| 897 | * Are we working as the bftp daemon? |
| 898 | */ |
| 899 | if (bftpd) { |
| 900 | SCPYN(request.exec_name, BFTPPATH); |
| 901 | } |
| 902 | #endif /* BFTPDAEMON */ |
| 903 | if (write(i, (char *)&request, sizeof(request)) < 0) { |
| 904 | char tbuf[128]; |
| 905 | (void) sprintf(tbuf, "Can't write to %s\n", INIT_FIFO); |
| 906 | fatalperror(net, tbuf); |
| 907 | } |
| 908 | (void) close(i); |
| 909 | (void) signal(SIGALRM, nologinproc); |
| 910 | for (i = 0; ; i++) { |
| 911 | char tbuf[128]; |
| 912 | alarm(15); |
| 913 | n = read(pty, ptyip, BUFSIZ); |
| 914 | if (i == 3 || n >= 0 || !gotalarm) |
| 915 | break; |
| 916 | gotalarm = 0; |
| 917 | sprintf(tbuf, "telnetd: waiting for /etc/init to start login process on %s\r\n", line); |
| 918 | (void) write(net, tbuf, strlen(tbuf)); |
| 919 | } |
| 920 | if (n < 0 && gotalarm) |
| 921 | fatal(net, "/etc/init didn't start login process"); |
| 922 | pcc += n; |
| 923 | alarm(0); |
| 924 | (void) signal(SIGALRM, SIG_DFL); |
| 925 | |
| 926 | return; |
| 927 | #endif /* NEWINIT */ |
| 928 | } |
| 929 | |
| 930 | char *envinit[3]; |
| 931 | extern char **environ; |
| 932 | |
| 933 | init_env() |
| 934 | { |
| 935 | extern char *getenv(); |
| 936 | char **envp; |
| 937 | |
| 938 | envp = envinit; |
| 939 | if (*envp = getenv("TZ")) |
| 940 | *envp++ -= 3; |
| 941 | #ifdef CRAY |
| 942 | else |
| 943 | *envp++ = "TZ=GMT0"; |
| 944 | #endif |
| 945 | *envp = 0; |
| 946 | environ = envinit; |
| 947 | } |
| 948 | |
| 949 | #ifdef CRAY |
| 950 | /* |
| 951 | * These are environment variable that we |
| 952 | * don't put on the argument line. |
| 953 | */ |
| 954 | char *invalid[] = { |
| 955 | "USER=", /* Set up by login */ |
| 956 | "HOME=", /* Set up by login */ |
| 957 | "LOGNAME=", /* Set up by login */ |
| 958 | "TMPDIR=", /* Set up by login */ |
| 959 | "SHELL=", /* Set up by login */ |
| 960 | "PATH=", /* Set up by login */ |
| 961 | "MAIL=", /* Set up by login */ |
| 962 | "TZ=", /* Login gets it from the environment */ |
| 963 | "TERM=", /* Login gets it from the environment */ |
| 964 | 0 |
| 965 | }; |
| 966 | #endif |
| 967 | |
| 968 | #ifndef NEWINIT |
| 969 | |
| 970 | /* |
| 971 | * start_login(t, host) |
| 972 | * |
| 973 | * Assuming that we are now running as a child processes, this |
| 974 | * function will turn us into the login process. |
| 975 | */ |
| 976 | |
| 977 | start_login(t, host) |
| 978 | int t; |
| 979 | char *host; |
| 980 | { |
| 981 | register char *cp; |
| 982 | register char **argv; |
| 983 | char **addarg(); |
| 984 | #ifdef CRAY |
| 985 | register char **cpp, **cpp2; |
| 986 | utmp_sig_wait(); |
| 987 | # ifndef TCVHUP |
| 988 | setpgrp(); |
| 989 | # endif |
| 990 | t = open(line, 2); /* open ttyp */ |
| 991 | if (t < 0) |
| 992 | fatalperror(net, line); |
| 993 | # ifdef TCVHUP |
| 994 | /* |
| 995 | * Hangup anybody else using this ttyp, then reopen it for |
| 996 | * ourselves. |
| 997 | */ |
| 998 | (void) chown(line, 0, 0); |
| 999 | (void) chmod(line, 0600); |
| 1000 | (void) signal(SIGHUP, SIG_IGN); |
| 1001 | (void) ioctl(t, TCVHUP, (char *)0); |
| 1002 | (void) signal(SIGHUP, SIG_DFL); |
| 1003 | setpgrp(); |
| 1004 | i = open(line, 2); |
| 1005 | if (i < 0) |
| 1006 | fatalperror(net, line); |
| 1007 | (void) close(t); |
| 1008 | t = i; |
| 1009 | # endif /* TCVHUP */ |
| 1010 | /* |
| 1011 | * set ttyp modes as we like them to be |
| 1012 | */ |
| 1013 | init_termbuf(); |
| 1014 | termbuf.c_oflag = OPOST|ONLCR|TAB3; |
| 1015 | termbuf.c_iflag = IGNPAR|ISTRIP|ICRNL|IXON; |
| 1016 | termbuf.c_lflag = ISIG|ICANON|ECHO|ECHOE|ECHOK; |
| 1017 | termbuf.c_cflag = EXTB|HUPCL|CS8; |
| 1018 | set_termbuf(); |
| 1019 | #endif /* CRAY */ |
| 1020 | |
| 1021 | /* |
| 1022 | * set up standard paths before forking to login |
| 1023 | */ |
| 1024 | #ifndef NO_SETSID |
| 1025 | if (setsid() < 0) |
| 1026 | fatalperror(net, "setsid"); |
| 1027 | #endif |
| 1028 | |
| 1029 | #ifdef TIOCSCTTY |
| 1030 | if (ioctl(t, TIOCSCTTY, (char *)0) < 0) |
| 1031 | fatalperror(net, "ioctl(sctty)"); |
| 1032 | #endif |
| 1033 | (void) close(net); |
| 1034 | (void) close(pty); |
| 1035 | (void) dup2(t, 0); |
| 1036 | (void) dup2(t, 1); |
| 1037 | (void) dup2(t, 2); |
| 1038 | (void) close(t); |
| 1039 | /* |
| 1040 | * -h : pass on name of host. |
| 1041 | * WARNING: -h is accepted by login if and only if |
| 1042 | * getuid() == 0. |
| 1043 | * -p : don't clobber the environment (so terminal type stays set). |
| 1044 | */ |
| 1045 | argv = addarg(0, "login"); |
| 1046 | argv = addarg(argv, "-h"); |
| 1047 | argv = addarg(argv, host); |
| 1048 | #if !defined(CRAY) && !defined(NO_LOGIN_P) |
| 1049 | argv = addarg(argv, "-p"); |
| 1050 | #endif |
| 1051 | #ifdef BFTPDAEMON |
| 1052 | /* |
| 1053 | * Are we working as the bftp daemon? If so, then ask login |
| 1054 | * to start bftp instead of shell. |
| 1055 | */ |
| 1056 | if (bftpd) { |
| 1057 | argv = addarg(argv, "-e"); |
| 1058 | argv = addarg(argv, BFTPPATH); |
| 1059 | } else |
| 1060 | #endif |
| 1061 | if (getenv("USER")) { |
| 1062 | argv = addarg(argv, getenv("USER")); |
| 1063 | } |
| 1064 | #ifdef CRAY |
| 1065 | for (cpp = environ; *cpp; cpp++) { |
| 1066 | for (cpp2 = invalid; *cpp2; cpp2++) |
| 1067 | if (strncmp(*cpp2, *cpp, strlen(*cpp2)) == 0) |
| 1068 | break; |
| 1069 | if (*cpp2) |
| 1070 | continue; |
| 1071 | argv = addarg(argv, *cpp); |
| 1072 | } |
| 1073 | #endif |
| 1074 | |
| 1075 | execv(_PATH_LOGIN, argv); |
| 1076 | |
| 1077 | syslog(LOG_ERR, "%s: %m\n", _PATH_LOGIN); |
| 1078 | fatalperror(net, _PATH_LOGIN); |
| 1079 | /*NOTREACHED*/ |
| 1080 | } |
| 1081 | |
| 1082 | char ** |
| 1083 | addarg(argv, val) |
| 1084 | register char **argv; |
| 1085 | register char *val; |
| 1086 | { |
| 1087 | register char **cpp; |
| 1088 | char *malloc(); |
| 1089 | |
| 1090 | if (argv == NULL) { |
| 1091 | /* |
| 1092 | * 10 entries, a leading length, and a null |
| 1093 | */ |
| 1094 | argv = (char **)malloc(sizeof(*argv) * 12); |
| 1095 | if (argv == NULL) |
| 1096 | return(NULL); |
| 1097 | *argv++ = (char *)10; |
| 1098 | *argv = (char *)0; |
| 1099 | } |
| 1100 | for (cpp = argv; *cpp; cpp++) |
| 1101 | ; |
| 1102 | if (cpp == &argv[(int)argv[-1]]) { |
| 1103 | --argv; |
| 1104 | *argv = (char *)((int)(*argv) + 10); |
| 1105 | argv = (char **)realloc(argv, (int)(*argv) + 2); |
| 1106 | if (argv == NULL) |
| 1107 | return(NULL); |
| 1108 | argv++; |
| 1109 | cpp = &argv[(int)argv[-1] - 10]; |
| 1110 | } |
| 1111 | *cpp++ = val; |
| 1112 | *cpp = 0; |
| 1113 | return(argv); |
| 1114 | } |
| 1115 | #endif NEWINIT |
| 1116 | |
| 1117 | /* |
| 1118 | * cleanup() |
| 1119 | * |
| 1120 | * This is the routine to call when we are all through, to |
| 1121 | * clean up anything that needs to be cleaned up. |
| 1122 | */ |
| 1123 | cleanup() |
| 1124 | { |
| 1125 | |
| 1126 | #ifndef CRAY |
| 1127 | # if BSD > 43 |
| 1128 | char *p; |
| 1129 | |
| 1130 | p = line + sizeof("/dev/") - 1; |
| 1131 | if (logout(p)) |
| 1132 | logwtmp(p, "", ""); |
| 1133 | (void)chmod(line, 0666); |
| 1134 | (void)chown(line, 0, 0); |
| 1135 | *p = 'p'; |
| 1136 | (void)chmod(line, 0666); |
| 1137 | (void)chown(line, 0, 0); |
| 1138 | # else |
| 1139 | rmut(); |
| 1140 | vhangup(); /* XXX */ |
| 1141 | # endif |
| 1142 | (void) shutdown(net, 2); |
| 1143 | #else /* CRAY */ |
| 1144 | # ifndef NEWINIT |
| 1145 | rmut(line); |
| 1146 | (void) shutdown(net, 2); |
| 1147 | kill(0, SIGHUP); |
| 1148 | # else /* NEWINIT */ |
| 1149 | (void) shutdown(net, 2); |
| 1150 | # endif /* NEWINT */ |
| 1151 | #endif /* CRAY */ |
| 1152 | exit(1); |
| 1153 | } |
| 1154 | |
| 1155 | #if defined(CRAY) && !defined(NEWINIT) |
| 1156 | /* |
| 1157 | * _utmp_sig_rcv |
| 1158 | * utmp_sig_init |
| 1159 | * utmp_sig_wait |
| 1160 | * These three functions are used to coordinate the handling of |
| 1161 | * the utmp file between the server and the soon-to-be-login shell. |
| 1162 | * The server actually creates the utmp structure, the child calls |
| 1163 | * utmp_sig_wait(), until the server calls utmp_sig_notify() and |
| 1164 | * signals the future-login shell to proceed. |
| 1165 | */ |
| 1166 | static int caught=0; /* NZ when signal intercepted */ |
| 1167 | static void (*func)(); /* address of previous handler */ |
| 1168 | |
| 1169 | void |
| 1170 | _utmp_sig_rcv(sig) |
| 1171 | int sig; |
| 1172 | { |
| 1173 | caught = 1; |
| 1174 | (void) signal(SIGUSR1, func); |
| 1175 | } |
| 1176 | |
| 1177 | utmp_sig_init() |
| 1178 | { |
| 1179 | /* |
| 1180 | * register signal handler for UTMP creation |
| 1181 | */ |
| 1182 | if ((int)(func = signal(SIGUSR1, _utmp_sig_rcv)) == -1) |
| 1183 | fatalperror(net, "telnetd/signal"); |
| 1184 | } |
| 1185 | |
| 1186 | utmp_sig_reset() |
| 1187 | { |
| 1188 | (void) signal(SIGUSR1, func); /* reset handler to default */ |
| 1189 | } |
| 1190 | |
| 1191 | utmp_sig_wait() |
| 1192 | { |
| 1193 | /* |
| 1194 | * Wait for parent to write our utmp entry. |
| 1195 | */ |
| 1196 | sigoff(); |
| 1197 | while (caught == 0) { |
| 1198 | pause(); /* wait until we get a signal (sigon) */ |
| 1199 | sigoff(); /* turn off signals while we check caught */ |
| 1200 | } |
| 1201 | sigon(); /* turn on signals again */ |
| 1202 | } |
| 1203 | |
| 1204 | utmp_sig_notify(pid) |
| 1205 | { |
| 1206 | kill(pid, SIGUSR1); |
| 1207 | } |
| 1208 | #endif /* defined(CRAY) && !defined(NEWINIT) */ |
| 1209 | |
| 1210 | /* |
| 1211 | * rmut() |
| 1212 | * |
| 1213 | * This is the function called by cleanup() to |
| 1214 | * remove the utmp entry for this person. |
| 1215 | */ |
| 1216 | |
| 1217 | #if !defined(CRAY) && BSD <= 43 |
| 1218 | rmut() |
| 1219 | { |
| 1220 | register f; |
| 1221 | int found = 0; |
| 1222 | struct utmp *u, *utmp; |
| 1223 | int nutmp; |
| 1224 | struct stat statbf; |
| 1225 | char *malloc(); |
| 1226 | long time(); |
| 1227 | off_t lseek(); |
| 1228 | |
| 1229 | f = open(utmpf, O_RDWR); |
| 1230 | if (f >= 0) { |
| 1231 | (void) fstat(f, &statbf); |
| 1232 | utmp = (struct utmp *)malloc((unsigned)statbf.st_size); |
| 1233 | if (!utmp) |
| 1234 | syslog(LOG_ERR, "utmp malloc failed"); |
| 1235 | if (statbf.st_size && utmp) { |
| 1236 | nutmp = read(f, (char *)utmp, (int)statbf.st_size); |
| 1237 | nutmp /= sizeof(struct utmp); |
| 1238 | |
| 1239 | for (u = utmp ; u < &utmp[nutmp] ; u++) { |
| 1240 | if (SCMPN(u->ut_line, line+5) || |
| 1241 | u->ut_name[0]==0) |
| 1242 | continue; |
| 1243 | (void) lseek(f, ((long)u)-((long)utmp), L_SET); |
| 1244 | SCPYN(u->ut_name, ""); |
| 1245 | SCPYN(u->ut_host, ""); |
| 1246 | (void) time(&u->ut_time); |
| 1247 | (void) write(f, (char *)u, sizeof(wtmp)); |
| 1248 | found++; |
| 1249 | } |
| 1250 | } |
| 1251 | (void) close(f); |
| 1252 | } |
| 1253 | if (found) { |
| 1254 | f = open(wtmpf, O_WRONLY|O_APPEND); |
| 1255 | if (f >= 0) { |
| 1256 | SCPYN(wtmp.ut_line, line+5); |
| 1257 | SCPYN(wtmp.ut_name, ""); |
| 1258 | SCPYN(wtmp.ut_host, ""); |
| 1259 | (void) time(&wtmp.ut_time); |
| 1260 | (void) write(f, (char *)&wtmp, sizeof(wtmp)); |
| 1261 | (void) close(f); |
| 1262 | } |
| 1263 | } |
| 1264 | (void) chmod(line, 0666); |
| 1265 | (void) chown(line, 0, 0); |
| 1266 | line[strlen("/dev/")] = 'p'; |
| 1267 | (void) chmod(line, 0666); |
| 1268 | (void) chown(line, 0, 0); |
| 1269 | } /* end of rmut */ |
| 1270 | #endif /* CRAY */ |