1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 1999 Brian Somers <brian@Awfulhak.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/param.h> 30 #include <sys/un.h> 31 #if defined(__OpenBSD__) || defined(__NetBSD__) 32 #include <sys/ioctl.h> 33 #endif 34 35 #include <errno.h> 36 #include <fcntl.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <sysexits.h> 41 #include <sys/uio.h> 42 #include <termios.h> 43 #include <ttyent.h> 44 #include <unistd.h> 45 #ifndef NONETGRAPH 46 #include <netgraph.h> 47 #include <netgraph/ng_async.h> 48 #include <netgraph/ng_message.h> 49 #include <netgraph/ng_ppp.h> 50 #include <netgraph/ng_tty.h> 51 #endif 52 53 #include "layer.h" 54 #include "defs.h" 55 #include "mbuf.h" 56 #include "log.h" 57 #include "timer.h" 58 #include "lqr.h" 59 #include "hdlc.h" 60 #include "throughput.h" 61 #include "fsm.h" 62 #include "lcp.h" 63 #include "ccp.h" 64 #include "link.h" 65 #include "async.h" 66 #include "descriptor.h" 67 #include "physical.h" 68 #include "mp.h" 69 #include "chat.h" 70 #include "auth.h" 71 #include "chap.h" 72 #include "cbcp.h" 73 #include "datalink.h" 74 #include "main.h" 75 #include "id.h" 76 #include "tty.h" 77 78 #if defined(__mac68k__) || defined(__macppc__) 79 #undef CRTS_IFLOW 80 #undef CCTS_OFLOW 81 #define CRTS_IFLOW CDTRCTS 82 #define CCTS_OFLOW CDTRCTS 83 #endif 84 85 #define Online(dev) ((dev)->mbits & TIOCM_CD) 86 87 struct ttydevice { 88 struct device dev; /* What struct physical knows about */ 89 struct pppTimer Timer; /* CD checks */ 90 int mbits; /* Current DCD status */ 91 int carrier_seconds; /* seconds before CD is *required* */ 92 #ifndef NONETGRAPH 93 struct { 94 unsigned speed; /* Pre-line-discipline speed */ 95 int fd; /* Pre-line-discipline fd */ 96 int disc; /* Old line-discipline */ 97 } real; 98 char hook[sizeof NG_ASYNC_HOOK_SYNC]; /* our ng_socket hook */ 99 int cs; /* A netgraph control socket (maybe) */ 100 #endif 101 struct termios ios; /* To be able to reset from raw mode */ 102 }; 103 104 #define device2tty(d) ((d)->type == TTY_DEVICE ? (struct ttydevice *)d : NULL) 105 106 unsigned 107 tty_DeviceSize(void) 108 { 109 return sizeof(struct ttydevice); 110 } 111 112 /* 113 * tty_Timeout() watches the DCD signal and mentions it if it's status 114 * changes. 115 */ 116 static void 117 tty_Timeout(void *data) 118 { 119 struct physical *p = data; 120 struct ttydevice *dev = device2tty(p->handler); 121 int ombits, change; 122 123 timer_Stop(&dev->Timer); 124 dev->Timer.load = SECTICKS; /* Once a second please */ 125 timer_Start(&dev->Timer); 126 ombits = dev->mbits; 127 128 if (p->fd >= 0) { 129 if (ioctl(p->fd, TIOCMGET, &dev->mbits) < 0) { 130 /* we must be a pty ? */ 131 if (p->cfg.cd.necessity != CD_DEFAULT) 132 log_Printf(LogWARN, "%s: Carrier ioctl not supported, " 133 "using ``set cd off''\n", p->link.name); 134 timer_Stop(&dev->Timer); 135 dev->mbits = TIOCM_CD; 136 return; 137 } 138 } else 139 dev->mbits = 0; 140 141 if (ombits == -1) { 142 /* First time looking for carrier */ 143 if (Online(dev)) 144 log_Printf(LogPHASE, "%s: %s: CD detected\n", p->link.name, p->name.full); 145 else if (++dev->carrier_seconds >= dev->dev.cd.delay) { 146 if (dev->dev.cd.necessity == CD_REQUIRED) 147 log_Printf(LogPHASE, "%s: %s: Required CD not detected\n", 148 p->link.name, p->name.full); 149 else { 150 log_Printf(LogPHASE, "%s: %s doesn't support CD\n", 151 p->link.name, p->name.full); 152 dev->mbits = TIOCM_CD; /* Dodgy null-modem cable ? */ 153 } 154 timer_Stop(&dev->Timer); 155 /* tty_AwaitCarrier() will notice */ 156 } else { 157 /* Keep waiting */ 158 log_Printf(LogDEBUG, "%s: %s: Still no carrier (%d/%d)\n", 159 p->link.name, p->name.full, dev->carrier_seconds, 160 dev->dev.cd.delay); 161 dev->mbits = -1; 162 } 163 } else { 164 change = ombits ^ dev->mbits; 165 if (change & TIOCM_CD) { 166 if (dev->mbits & TIOCM_CD) 167 log_Printf(LogDEBUG, "%s: offline -> online\n", p->link.name); 168 else { 169 log_Printf(LogDEBUG, "%s: online -> offline\n", p->link.name); 170 log_Printf(LogPHASE, "%s: Carrier lost\n", p->link.name); 171 datalink_Down(p->dl, CLOSE_NORMAL); 172 timer_Stop(&dev->Timer); 173 } 174 } else 175 log_Printf(LogDEBUG, "%s: Still %sline\n", p->link.name, 176 Online(dev) ? "on" : "off"); 177 } 178 } 179 180 static void 181 tty_StartTimer(struct physical *p) 182 { 183 struct ttydevice *dev = device2tty(p->handler); 184 185 timer_Stop(&dev->Timer); 186 dev->Timer.load = SECTICKS; 187 dev->Timer.func = tty_Timeout; 188 dev->Timer.name = "tty CD"; 189 dev->Timer.arg = p; 190 log_Printf(LogDEBUG, "%s: Using tty_Timeout\n", p->link.name); 191 timer_Start(&dev->Timer); 192 } 193 194 static int 195 tty_AwaitCarrier(struct physical *p) 196 { 197 struct ttydevice *dev = device2tty(p->handler); 198 199 if (dev->dev.cd.necessity == CD_NOTREQUIRED || physical_IsSync(p)) 200 return CARRIER_OK; 201 202 if (dev->mbits == -1) { 203 if (dev->Timer.state == TIMER_STOPPED) { 204 dev->carrier_seconds = 0; 205 tty_StartTimer(p); 206 } 207 return CARRIER_PENDING; /* Not yet ! */ 208 } 209 210 return Online(dev) ? CARRIER_OK : CARRIER_LOST; 211 } 212 213 #ifdef NONETGRAPH 214 #define tty_SetAsyncParams NULL 215 #define tty_Write NULL 216 #define tty_Read NULL 217 #else 218 219 static int 220 isngtty(struct ttydevice *dev) 221 { 222 return dev->real.fd != -1; 223 } 224 225 static void 226 tty_SetAsyncParams(struct physical *p, u_int32_t mymap, u_int32_t hismap) 227 { 228 struct ttydevice *dev = device2tty(p->handler); 229 char asyncpath[NG_PATHSIZ]; 230 struct ng_async_cfg cfg; 231 232 if (isngtty(dev)) { 233 /* Configure the async converter node */ 234 235 snprintf(asyncpath, sizeof asyncpath, ".:%s", dev->hook); 236 memset(&cfg, 0, sizeof cfg); 237 cfg.enabled = 1; 238 cfg.accm = mymap | hismap; 239 cfg.amru = MAX_MTU; 240 cfg.smru = MAX_MRU; 241 log_Printf(LogDEBUG, "Configure async node at %s\n", asyncpath); 242 if (NgSendMsg(dev->cs, asyncpath, NGM_ASYNC_COOKIE, 243 NGM_ASYNC_CMD_SET_CONFIG, &cfg, sizeof cfg) < 0) 244 log_Printf(LogWARN, "%s: Can't configure async node at %s\n", 245 p->link.name, asyncpath); 246 } else 247 /* No netgraph node, just config the async layer */ 248 async_SetLinkParams(&p->async, mymap, hismap); 249 } 250 251 static int 252 LoadLineDiscipline(struct physical *p) 253 { 254 struct ttydevice *dev = device2tty(p->handler); 255 u_char rbuf[sizeof(struct ng_mesg) + sizeof(struct nodeinfo)]; 256 struct ng_mesg *reply; 257 struct nodeinfo *info; 258 char ttypath[NG_NODESIZ]; 259 struct ngm_mkpeer ngm; 260 struct ngm_connect ngc; 261 int ldisc, cs, ds, hot; 262 unsigned speed; 263 264 /* 265 * Don't use the netgraph line discipline for now. Using it works, but 266 * carrier cannot be detected via TIOCMGET and the device doesn't become 267 * selectable with 0 bytes to read when carrier is lost :( 268 */ 269 return 0; 270 271 reply = (struct ng_mesg *)rbuf; 272 info = (struct nodeinfo *)reply->data; 273 274 loadmodules(LOAD_VERBOSLY, "netgraph", "ng_tty", "ng_async", "ng_socket", 275 NULL); 276 277 /* Get the speed before loading the line discipline */ 278 speed = physical_GetSpeed(p); 279 280 if (ioctl(p->fd, TIOCGETD, &dev->real.disc) < 0) { 281 log_Printf(LogDEBUG, "%s: Couldn't get tty line discipline\n", 282 p->link.name); 283 return 0; 284 } 285 ldisc = NETGRAPHDISC; 286 if (ID0ioctl(p->fd, TIOCSETD, &ldisc) < 0) { 287 log_Printf(LogDEBUG, "%s: Couldn't set NETGRAPHDISC line discipline\n", 288 p->link.name); 289 return 0; 290 } 291 292 /* Get the name of the tty node */ 293 if (ioctl(p->fd, NGIOCGINFO, info) < 0) { 294 log_Printf(LogWARN, "%s: ioctl(NGIOCGINFO): %s\n", p->link.name, 295 strerror(errno)); 296 ID0ioctl(p->fd, TIOCSETD, &dev->real.disc); 297 return 0; 298 } 299 snprintf(ttypath, sizeof ttypath, "%s:", info->name); 300 301 /* Create a socket node for our endpoint (and to send messages via) */ 302 if (ID0NgMkSockNode(NULL, &cs, &ds) == -1) { 303 log_Printf(LogWARN, "%s: NgMkSockNode: %s\n", p->link.name, 304 strerror(errno)); 305 ID0ioctl(p->fd, TIOCSETD, &dev->real.disc); 306 return 0; 307 } 308 309 /* Set the ``hot char'' on the TTY node */ 310 hot = HDLC_SYN; 311 log_Printf(LogDEBUG, "%s: Set tty hotchar to 0x%02x\n", p->link.name, hot); 312 if (NgSendMsg(cs, ttypath, NGM_TTY_COOKIE, 313 NGM_TTY_SET_HOTCHAR, &hot, sizeof hot) < 0) { 314 log_Printf(LogWARN, "%s: Can't set hot char\n", p->link.name); 315 goto failed; 316 } 317 318 /* Attach an async converter node */ 319 snprintf(ngm.type, sizeof ngm.type, "%s", NG_ASYNC_NODE_TYPE); 320 snprintf(ngm.ourhook, sizeof ngm.ourhook, "%s", NG_TTY_HOOK); 321 snprintf(ngm.peerhook, sizeof ngm.peerhook, "%s", NG_ASYNC_HOOK_ASYNC); 322 log_Printf(LogDEBUG, "%s: Send mkpeer async:%s to %s:%s\n", p->link.name, 323 ngm.peerhook, ttypath, ngm.ourhook); 324 if (NgSendMsg(cs, ttypath, NGM_GENERIC_COOKIE, 325 NGM_MKPEER, &ngm, sizeof ngm) < 0) { 326 log_Printf(LogWARN, "%s: Can't create %s node\n", p->link.name, 327 NG_ASYNC_NODE_TYPE); 328 goto failed; 329 } 330 331 /* Connect the async node to our socket */ 332 snprintf(ngc.path, sizeof ngc.path, "%s%s", ttypath, NG_TTY_HOOK); 333 snprintf(ngc.peerhook, sizeof ngc.peerhook, "%s", NG_ASYNC_HOOK_SYNC); 334 memcpy(ngc.ourhook, ngc.peerhook, sizeof ngc.ourhook); 335 log_Printf(LogDEBUG, "%s: Send connect %s:%s to .:%s\n", p->link.name, 336 ngc.path, ngc.peerhook, ngc.ourhook); 337 if (NgSendMsg(cs, ".:", NGM_GENERIC_COOKIE, NGM_CONNECT, 338 &ngc, sizeof ngc) < 0) { 339 log_Printf(LogWARN, "%s: Can't connect .:%s -> %s.%s: %s\n", 340 p->link.name, ngc.ourhook, ngc.path, ngc.peerhook, 341 strerror(errno)); 342 goto failed; 343 } 344 345 /* Get the async node id */ 346 if (NgSendMsg(cs, ngc.path, NGM_GENERIC_COOKIE, NGM_NODEINFO, NULL, 0) < 0) { 347 log_Printf(LogWARN, "%s: Can't request async node info at %s: %s\n", 348 p->link.name, ngc.path, strerror(errno)); 349 goto failed; 350 } 351 if (NgRecvMsg(cs, reply, sizeof rbuf, NULL) < 0) { 352 log_Printf(LogWARN, "%s: Can't obtain async node info at %s: %s\n", 353 p->link.name, ngc.path, strerror(errno)); 354 goto failed; 355 } 356 357 /* All done, set up our device state */ 358 snprintf(dev->hook, sizeof dev->hook, "%s", ngc.ourhook); 359 dev->cs = cs; 360 dev->real.fd = p->fd; 361 p->fd = ds; 362 dev->real.speed = speed; 363 physical_SetSync(p); 364 365 tty_SetAsyncParams(p, 0xffffffff, 0xffffffff); 366 physical_SetupStack(p, dev->dev.name, PHYSICAL_NOFORCE); 367 log_Printf(LogPHASE, "%s: Loaded netgraph tty line discipline\n", 368 p->link.name); 369 370 return 1; 371 372 failed: 373 ID0ioctl(p->fd, TIOCSETD, &dev->real.disc); 374 close(ds); 375 close(cs); 376 377 return 0; 378 } 379 380 static void 381 UnloadLineDiscipline(struct physical *p) 382 { 383 struct ttydevice *dev = device2tty(p->handler); 384 385 if (isngtty(dev)) { 386 if (!physical_SetSpeed(p, dev->real.speed)) 387 log_Printf(LogWARN, "Couldn't reset tty speed to %d\n", dev->real.speed); 388 dev->real.speed = 0; 389 close(p->fd); 390 p->fd = dev->real.fd; 391 dev->real.fd = -1; 392 close(dev->cs); 393 dev->cs = -1; 394 *dev->hook = '\0'; 395 if (ID0ioctl(p->fd, TIOCSETD, &dev->real.disc) == 0) { 396 physical_SetupStack(p, dev->dev.name, PHYSICAL_NOFORCE); 397 log_Printf(LogPHASE, "%s: Unloaded netgraph tty line discipline\n", 398 p->link.name); 399 } else 400 log_Printf(LogWARN, "%s: Failed to unload netgraph tty line discipline\n", 401 p->link.name); 402 } 403 } 404 405 static ssize_t 406 tty_Write(struct physical *p, const void *v, size_t n) 407 { 408 struct ttydevice *dev = device2tty(p->handler); 409 410 if (isngtty(dev)) 411 return NgSendData(p->fd, dev->hook, v, n) == -1 ? -1 : (ssize_t)n; 412 else 413 return write(p->fd, v, n); 414 } 415 416 static ssize_t 417 tty_Read(struct physical *p, void *v, size_t n) 418 { 419 struct ttydevice *dev = device2tty(p->handler); 420 char hook[sizeof NG_ASYNC_HOOK_SYNC]; 421 422 if (isngtty(dev)) 423 return NgRecvData(p->fd, v, n, hook); 424 else 425 return read(p->fd, v, n); 426 } 427 428 #endif /* NETGRAPH */ 429 430 static int 431 tty_Raw(struct physical *p) 432 { 433 struct ttydevice *dev = device2tty(p->handler); 434 struct termios ios; 435 int oldflag; 436 437 log_Printf(LogDEBUG, "%s: Entering tty_Raw\n", p->link.name); 438 439 if (p->type != PHYS_DIRECT && p->fd >= 0 && !Online(dev)) 440 log_Printf(LogDEBUG, "%s: Raw: descriptor = %d, mbits = %x\n", 441 p->link.name, p->fd, dev->mbits); 442 443 if (!physical_IsSync(p)) { 444 #ifndef NONETGRAPH 445 if (!LoadLineDiscipline(p)) 446 #endif 447 { 448 tcgetattr(p->fd, &ios); 449 cfmakeraw(&ios); 450 if (p->cfg.rts_cts) 451 ios.c_cflag |= CLOCAL | CCTS_OFLOW | CRTS_IFLOW; 452 else 453 ios.c_cflag |= CLOCAL; 454 455 if (p->type != PHYS_DEDICATED) 456 ios.c_cflag |= HUPCL; 457 458 if (tcsetattr(p->fd, TCSANOW, &ios) == -1) 459 log_Printf(LogWARN, "%s: tcsetattr: Failed configuring device\n", 460 p->link.name); 461 } 462 } 463 464 oldflag = fcntl(p->fd, F_GETFL, 0); 465 if (oldflag < 0) 466 return 0; 467 fcntl(p->fd, F_SETFL, oldflag | O_NONBLOCK); 468 469 return 1; 470 } 471 472 static void 473 tty_Offline(struct physical *p) 474 { 475 struct ttydevice *dev = device2tty(p->handler); 476 477 if (p->fd >= 0) { 478 timer_Stop(&dev->Timer); 479 dev->mbits &= ~TIOCM_DTR; /* XXX: Hmm, what's this supposed to do ? */ 480 if (Online(dev)) { 481 struct termios tio; 482 483 tcgetattr(p->fd, &tio); 484 if (cfsetspeed(&tio, B0) == -1 || tcsetattr(p->fd, TCSANOW, &tio) == -1) 485 log_Printf(LogWARN, "%s: Unable to set physical to speed 0\n", 486 p->link.name); 487 } 488 } 489 } 490 491 static void 492 tty_Cooked(struct physical *p) 493 { 494 struct ttydevice *dev = device2tty(p->handler); 495 int oldflag; 496 497 tty_Offline(p); /* In case of emergency close()s */ 498 499 tcflush(p->fd, TCIOFLUSH); 500 501 if (!physical_IsSync(p) && tcsetattr(p->fd, TCSAFLUSH, &dev->ios) == -1) 502 log_Printf(LogWARN, "%s: tcsetattr: Unable to restore device settings\n", 503 p->link.name); 504 505 #ifndef NONETGRAPH 506 UnloadLineDiscipline(p); 507 #endif 508 509 if ((oldflag = fcntl(p->fd, F_GETFL, 0)) != -1) 510 fcntl(p->fd, F_SETFL, oldflag & ~O_NONBLOCK); 511 } 512 513 static void 514 tty_StopTimer(struct physical *p) 515 { 516 struct ttydevice *dev = device2tty(p->handler); 517 518 timer_Stop(&dev->Timer); 519 } 520 521 static void 522 tty_Free(struct physical *p) 523 { 524 struct ttydevice *dev = device2tty(p->handler); 525 526 tty_Offline(p); /* In case of emergency close()s */ 527 free(dev); 528 } 529 530 static unsigned 531 tty_Speed(struct physical *p) 532 { 533 struct termios ios; 534 535 if (tcgetattr(p->fd, &ios) == -1) 536 return 0; 537 538 return SpeedToUnsigned(cfgetispeed(&ios)); 539 } 540 541 static const char * 542 tty_OpenInfo(struct physical *p) 543 { 544 struct ttydevice *dev = device2tty(p->handler); 545 static char buf[13]; 546 547 if (Online(dev)) 548 strcpy(buf, "with"); 549 else 550 strcpy(buf, "no"); 551 strcat(buf, " carrier"); 552 553 return buf; 554 } 555 556 static int 557 tty_Slot(struct physical *p) 558 { 559 struct ttyent *ttyp; 560 int slot; 561 562 setttyent(); 563 for (slot = 1; (ttyp = getttyent()); ++slot) 564 if (!strcmp(ttyp->ty_name, p->name.base)) { 565 endttyent(); 566 return slot; 567 } 568 569 endttyent(); 570 return -1; 571 } 572 573 static void 574 tty_device2iov(struct device *d, struct iovec *iov, int *niov, 575 int maxiov __unused, 576 #ifndef NONETGRAPH 577 int *auxfd, int *nauxfd 578 #else 579 int *auxfd __unused, int *nauxfd __unused 580 #endif 581 ) 582 { 583 struct ttydevice *dev; 584 int sz = physical_MaxDeviceSize(); 585 586 iov[*niov].iov_base = d = realloc(d, sz); 587 if (d == NULL) { 588 log_Printf(LogALERT, "Failed to allocate memory: %d\n", sz); 589 AbortProgram(EX_OSERR); 590 } 591 iov[*niov].iov_len = sz; 592 (*niov)++; 593 594 dev = device2tty(d); 595 596 #ifndef NONETGRAPH 597 if (dev->cs >= 0) { 598 *auxfd = dev->cs; 599 (*nauxfd)++; 600 } 601 #endif 602 603 if (dev->Timer.state != TIMER_STOPPED) { 604 timer_Stop(&dev->Timer); 605 dev->Timer.state = TIMER_RUNNING; 606 } 607 } 608 609 static struct device basettydevice = { 610 TTY_DEVICE, 611 "tty", 612 0, 613 { CD_VARIABLE, DEF_TTYCDDELAY }, 614 tty_AwaitCarrier, 615 NULL, 616 tty_Raw, 617 tty_Offline, 618 tty_Cooked, 619 tty_SetAsyncParams, 620 tty_StopTimer, 621 tty_Free, 622 tty_Read, 623 tty_Write, 624 tty_device2iov, 625 tty_Speed, 626 tty_OpenInfo, 627 tty_Slot 628 }; 629 630 struct device * 631 tty_iov2device(int type, struct physical *p, struct iovec *iov, int *niov, 632 int maxiov __unused, 633 #ifndef NONETGRAPH 634 int *auxfd, int *nauxfd 635 #else 636 int *auxfd __unused, int *nauxfd __unused 637 #endif 638 ) 639 { 640 if (type == TTY_DEVICE) { 641 struct ttydevice *dev = (struct ttydevice *)iov[(*niov)++].iov_base; 642 643 dev = realloc(dev, sizeof *dev); /* Reduce to the correct size */ 644 if (dev == NULL) { 645 log_Printf(LogALERT, "Failed to allocate memory: %d\n", 646 (int)(sizeof *dev)); 647 AbortProgram(EX_OSERR); 648 } 649 650 #ifndef NONETGRAPH 651 if (*nauxfd) { 652 dev->cs = *auxfd; 653 (*nauxfd)--; 654 } else 655 dev->cs = -1; 656 #endif 657 658 /* Refresh function pointers etc */ 659 memcpy(&dev->dev, &basettydevice, sizeof dev->dev); 660 661 physical_SetupStack(p, dev->dev.name, PHYSICAL_NOFORCE); 662 if (dev->Timer.state != TIMER_STOPPED) { 663 dev->Timer.state = TIMER_STOPPED; 664 p->handler = &dev->dev; /* For the benefit of StartTimer */ 665 tty_StartTimer(p); 666 } 667 return &dev->dev; 668 } 669 670 return NULL; 671 } 672 673 struct device * 674 tty_Create(struct physical *p) 675 { 676 struct ttydevice *dev; 677 struct termios ios; 678 int oldflag; 679 680 if (p->fd < 0 || !isatty(p->fd)) 681 /* Don't want this */ 682 return NULL; 683 684 if (*p->name.full == '\0') { 685 physical_SetDevice(p, ttyname(p->fd)); 686 log_Printf(LogDEBUG, "%s: Input is a tty (%s)\n", 687 p->link.name, p->name.full); 688 } else 689 log_Printf(LogDEBUG, "%s: Opened %s\n", p->link.name, p->name.full); 690 691 /* We're gonna return a ttydevice (unless something goes horribly wrong) */ 692 693 if ((dev = malloc(sizeof *dev)) == NULL) { 694 /* Complete failure - parent doesn't continue trying to ``create'' */ 695 close(p->fd); 696 p->fd = -1; 697 return NULL; 698 } 699 700 memcpy(&dev->dev, &basettydevice, sizeof dev->dev); 701 memset(&dev->Timer, '\0', sizeof dev->Timer); 702 dev->mbits = -1; 703 #ifndef NONETGRAPH 704 dev->real.speed = 0; 705 dev->real.fd = -1; 706 dev->real.disc = -1; 707 *dev->hook = '\0'; 708 #endif 709 tcgetattr(p->fd, &ios); 710 dev->ios = ios; 711 712 if (p->cfg.cd.necessity != CD_DEFAULT) 713 /* Any override is ok for the tty device */ 714 dev->dev.cd = p->cfg.cd; 715 716 log_Printf(LogDEBUG, "%s: tty_Create: physical (get): fd = %d," 717 " iflag = %lx, oflag = %lx, cflag = %lx\n", p->link.name, p->fd, 718 (u_long)ios.c_iflag, (u_long)ios.c_oflag, (u_long)ios.c_cflag); 719 720 cfmakeraw(&ios); 721 if (p->cfg.rts_cts) 722 ios.c_cflag |= CLOCAL | CCTS_OFLOW | CRTS_IFLOW; 723 else { 724 ios.c_cflag |= CLOCAL; 725 ios.c_iflag |= IXOFF; 726 } 727 ios.c_iflag |= IXON; 728 if (p->type != PHYS_DEDICATED) 729 ios.c_cflag |= HUPCL; 730 731 if (p->type != PHYS_DIRECT) { 732 /* Change tty speed when we're not in -direct mode */ 733 ios.c_cflag &= ~(CSIZE | PARODD | PARENB); 734 ios.c_cflag |= p->cfg.parity; 735 if (cfsetspeed(&ios, UnsignedToSpeed(p->cfg.speed)) == -1) 736 log_Printf(LogWARN, "%s: %s: Unable to set speed to %d\n", 737 p->link.name, p->name.full, p->cfg.speed); 738 } 739 740 if (tcsetattr(p->fd, TCSADRAIN, &ios) == -1) { 741 log_Printf(LogWARN, "%s: tcsetattr: Failed configuring device\n", 742 p->link.name); 743 if (p->type != PHYS_DIRECT && p->cfg.speed > 115200) 744 log_Printf(LogWARN, "%.*s Perhaps the speed is unsupported\n", 745 (int)strlen(p->link.name), ""); 746 } 747 748 log_Printf(LogDEBUG, "%s: physical (put): iflag = %lx, oflag = %lx, " 749 "cflag = %lx\n", p->link.name, (u_long)ios.c_iflag, 750 (u_long)ios.c_oflag, (u_long)ios.c_cflag); 751 752 oldflag = fcntl(p->fd, F_GETFL, 0); 753 if (oldflag < 0) { 754 /* Complete failure - parent doesn't continue trying to ``create'' */ 755 756 log_Printf(LogWARN, "%s: Open: Cannot get physical flags: %s\n", 757 p->link.name, strerror(errno)); 758 tty_Cooked(p); 759 close(p->fd); 760 p->fd = -1; 761 free(dev); 762 return NULL; 763 } else 764 fcntl(p->fd, F_SETFL, oldflag & ~O_NONBLOCK); 765 766 physical_SetupStack(p, dev->dev.name, PHYSICAL_NOFORCE); 767 768 return &dev->dev; 769 } 770