1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 * $FreeBSD$ 29 */ 30 31 #include <sys/param.h> 32 #include <sys/socket.h> 33 #include <sys/un.h> 34 #include <netinet/in.h> 35 #include <arpa/inet.h> 36 #include <netdb.h> 37 #include <netgraph.h> 38 #include <net/ethernet.h> 39 #include <net/if.h> 40 #include <net/route.h> 41 #include <netinet/in_systm.h> 42 #include <netinet/ip.h> 43 #include <netgraph/ng_ether.h> 44 #include <netgraph/ng_message.h> 45 #include <netgraph/ng_pppoe.h> 46 #include <netgraph/ng_socket.h> 47 48 #include <errno.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <sysexits.h> 53 #include <sys/fcntl.h> 54 #include <sys/stat.h> 55 #include <sys/uio.h> 56 #include <termios.h> 57 #include <sys/time.h> 58 #include <syslog.h> 59 #include <unistd.h> 60 61 #include "layer.h" 62 #include "defs.h" 63 #include "mbuf.h" 64 #include "log.h" 65 #include "timer.h" 66 #include "lqr.h" 67 #include "hdlc.h" 68 #include "throughput.h" 69 #include "fsm.h" 70 #include "lcp.h" 71 #include "ccp.h" 72 #include "link.h" 73 #include "async.h" 74 #include "descriptor.h" 75 #include "physical.h" 76 #include "main.h" 77 #include "mp.h" 78 #include "chat.h" 79 #include "auth.h" 80 #include "chap.h" 81 #include "cbcp.h" 82 #include "datalink.h" 83 #include "slcompress.h" 84 #include "iplist.h" 85 #include "ncpaddr.h" 86 #include "ip.h" 87 #include "ipcp.h" 88 #include "filter.h" 89 #ifndef NORADIUS 90 #include "radius.h" 91 #endif 92 #include "ipv6cp.h" 93 #include "ncp.h" 94 #include "bundle.h" 95 #include "id.h" 96 #include "iface.h" 97 #include "route.h" 98 #include "ether.h" 99 100 101 #define PPPOE_NODE_TYPE_LEN (sizeof NG_PPPOE_NODE_TYPE - 1) /* "PPPoE" */ 102 103 struct etherdevice { 104 struct device dev; /* What struct physical knows about */ 105 int cs; /* Control socket */ 106 int connected; /* Are we connected yet ? */ 107 int timeout; /* Seconds attempting to connect */ 108 char hook[sizeof TUN_NAME + 11]; /* Our socket node hook */ 109 u_int32_t slot; /* ifindex << 24 | unit */ 110 }; 111 112 #define device2ether(d) \ 113 ((d)->type == ETHER_DEVICE ? (struct etherdevice *)d : NULL) 114 115 unsigned 116 ether_DeviceSize(void) 117 { 118 return sizeof(struct etherdevice); 119 } 120 121 static ssize_t 122 ether_Write(struct physical *p, const void *v, size_t n) 123 { 124 struct etherdevice *dev = device2ether(p->handler); 125 126 return NgSendData(p->fd, dev->hook, v, n) == -1 ? -1 : (ssize_t)n; 127 } 128 129 static ssize_t 130 ether_Read(struct physical *p, void *v, size_t n) 131 { 132 char hook[sizeof TUN_NAME + 11]; 133 134 return NgRecvData(p->fd, v, n, hook); 135 } 136 137 static int 138 ether_RemoveFromSet(struct physical *p, fd_set *r, fd_set *w, fd_set *e) 139 { 140 struct etherdevice *dev = device2ether(p->handler); 141 int result; 142 143 if (r && dev->cs >= 0 && FD_ISSET(dev->cs, r)) { 144 FD_CLR(dev->cs, r); 145 log_Printf(LogTIMER, "%s: fdunset(ctrl) %d\n", p->link.name, dev->cs); 146 result = 1; 147 } else 148 result = 0; 149 150 /* Careful... physical_RemoveFromSet() called us ! */ 151 152 p->handler->removefromset = NULL; 153 result += physical_RemoveFromSet(p, r, w, e); 154 p->handler->removefromset = ether_RemoveFromSet; 155 156 return result; 157 } 158 159 static void 160 ether_Free(struct physical *p) 161 { 162 struct etherdevice *dev = device2ether(p->handler); 163 164 physical_SetDescriptor(p); 165 if (dev->cs != -1) 166 close(dev->cs); 167 free(dev); 168 } 169 170 static const char * 171 ether_OpenInfo(struct physical *p) 172 { 173 struct etherdevice *dev = device2ether(p->handler); 174 175 switch (dev->connected) { 176 case CARRIER_PENDING: 177 return "negotiating"; 178 case CARRIER_OK: 179 return "established"; 180 } 181 182 return "disconnected"; 183 } 184 185 static int 186 ether_Slot(struct physical *p) 187 { 188 struct etherdevice *dev = device2ether(p->handler); 189 190 return dev->slot; 191 } 192 193 194 static void 195 ether_device2iov(struct device *d, struct iovec *iov, int *niov, 196 int maxiov __unused, int *auxfd, int *nauxfd) 197 { 198 struct etherdevice *dev; 199 int sz = physical_MaxDeviceSize(); 200 201 iov[*niov].iov_base = d = realloc(d, sz); 202 if (d == NULL) { 203 log_Printf(LogALERT, "Failed to allocate memory: %d\n", sz); 204 AbortProgram(EX_OSERR); 205 } 206 iov[*niov].iov_len = sz; 207 (*niov)++; 208 209 dev = device2ether(d); 210 if (dev->cs >= 0) { 211 *auxfd = dev->cs; 212 (*nauxfd)++; 213 } 214 } 215 216 static void 217 ether_MessageIn(struct etherdevice *dev) 218 { 219 char msgbuf[sizeof(struct ng_mesg) + sizeof(struct ngpppoe_sts)]; 220 struct ng_mesg *rep = (struct ng_mesg *)msgbuf; 221 struct ngpppoe_sts *sts = (struct ngpppoe_sts *)(msgbuf + sizeof *rep); 222 char *end, unknown[14], sessionid[5]; 223 const char *msg; 224 struct timeval t; 225 fd_set *r; 226 u_long slot; 227 int asciilen, ret; 228 229 if (dev->cs < 0) 230 return; 231 232 if ((r = mkfdset()) == NULL) { 233 log_Printf(LogERROR, "DoLoop: Cannot create fd_set\n"); 234 return; 235 } 236 237 while (1) { 238 zerofdset(r); 239 FD_SET(dev->cs, r); 240 t.tv_sec = t.tv_usec = 0; 241 ret = select(dev->cs + 1, r, NULL, NULL, &t); 242 243 if (ret <= 0) 244 break; 245 246 if (NgRecvMsg(dev->cs, rep, sizeof msgbuf, NULL) <= 0) 247 break; 248 249 if (rep->header.version != NG_VERSION) { 250 log_Printf(LogWARN, "%ld: Unexpected netgraph version, expected %ld\n", 251 (long)rep->header.version, (long)NG_VERSION); 252 break; 253 } 254 255 if (rep->header.typecookie != NGM_PPPOE_COOKIE) { 256 log_Printf(LogWARN, "%ld: Unexpected netgraph cookie, expected %ld\n", 257 (long)rep->header.typecookie, (long)NGM_PPPOE_COOKIE); 258 break; 259 } 260 261 asciilen = 0; 262 switch (rep->header.cmd) { 263 case NGM_PPPOE_SET_FLAG: msg = "SET_FLAG"; break; 264 case NGM_PPPOE_CONNECT: msg = "CONNECT"; break; 265 case NGM_PPPOE_LISTEN: msg = "LISTEN"; break; 266 case NGM_PPPOE_OFFER: msg = "OFFER"; break; 267 case NGM_PPPOE_SUCCESS: msg = "SUCCESS"; break; 268 case NGM_PPPOE_FAIL: msg = "FAIL"; break; 269 case NGM_PPPOE_CLOSE: msg = "CLOSE"; break; 270 case NGM_PPPOE_GET_STATUS: msg = "GET_STATUS"; break; 271 case NGM_PPPOE_ACNAME: 272 msg = "ACNAME"; 273 if (setenv("ACNAME", sts->hook, 1) != 0) 274 log_Printf(LogWARN, "setenv: cannot set ACNAME=%s: %m", sts->hook); 275 asciilen = rep->header.arglen; 276 break; 277 case NGM_PPPOE_SESSIONID: 278 msg = "SESSIONID"; 279 snprintf(sessionid, sizeof sessionid, "%04x", *(u_int16_t *)sts); 280 if (setenv("SESSIONID", sessionid, 1) != 0) 281 syslog(LOG_WARNING, "setenv: cannot set SESSIONID=%s: %m", 282 sessionid); 283 /* Use this in preference to our interface index */ 284 slot = strtoul(sessionid, &end, 16); 285 if (end != sessionid && *end == '\0') 286 dev->slot = slot; 287 break; 288 default: 289 snprintf(unknown, sizeof unknown, "<%d>", (int)rep->header.cmd); 290 msg = unknown; 291 break; 292 } 293 294 if (asciilen) 295 log_Printf(LogPHASE, "Received NGM_PPPOE_%s (hook \"%.*s\")\n", 296 msg, asciilen, sts->hook); 297 else 298 log_Printf(LogPHASE, "Received NGM_PPPOE_%s\n", msg); 299 300 switch (rep->header.cmd) { 301 case NGM_PPPOE_SUCCESS: 302 dev->connected = CARRIER_OK; 303 break; 304 case NGM_PPPOE_FAIL: 305 case NGM_PPPOE_CLOSE: 306 dev->connected = CARRIER_LOST; 307 break; 308 } 309 } 310 free(r); 311 } 312 313 static int 314 ether_AwaitCarrier(struct physical *p) 315 { 316 struct etherdevice *dev = device2ether(p->handler); 317 318 if (dev->connected != CARRIER_OK && !dev->timeout--) 319 dev->connected = CARRIER_LOST; 320 else if (dev->connected == CARRIER_PENDING) 321 ether_MessageIn(dev); 322 323 return dev->connected; 324 } 325 326 static const struct device baseetherdevice = { 327 ETHER_DEVICE, 328 "ether", 329 1492, 330 { CD_REQUIRED, DEF_ETHERCDDELAY }, 331 ether_AwaitCarrier, 332 ether_RemoveFromSet, 333 NULL, 334 NULL, 335 NULL, 336 NULL, 337 NULL, 338 ether_Free, 339 ether_Read, 340 ether_Write, 341 ether_device2iov, 342 NULL, 343 ether_OpenInfo, 344 ether_Slot 345 }; 346 347 struct device * 348 ether_iov2device(int type, struct physical *p, struct iovec *iov, int *niov, 349 int maxiov __unused, int *auxfd, int *nauxfd) 350 { 351 if (type == ETHER_DEVICE) { 352 struct etherdevice *dev = (struct etherdevice *)iov[(*niov)++].iov_base; 353 354 dev = realloc(dev, sizeof *dev); /* Reduce to the correct size */ 355 if (dev == NULL) { 356 log_Printf(LogALERT, "Failed to allocate memory: %d\n", 357 (int)(sizeof *dev)); 358 AbortProgram(EX_OSERR); 359 } 360 361 if (*nauxfd) { 362 dev->cs = *auxfd; 363 (*nauxfd)--; 364 } else 365 dev->cs = -1; 366 367 /* Refresh function pointers etc */ 368 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 369 370 physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 371 return &dev->dev; 372 } 373 374 return NULL; 375 } 376 377 static int 378 ether_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, int *n) 379 { 380 struct physical *p = descriptor2physical(d); 381 struct etherdevice *dev = device2ether(p->handler); 382 int result; 383 384 if (r && dev->cs >= 0) { 385 FD_SET(dev->cs, r); 386 log_Printf(LogTIMER, "%s(ctrl): fdset(r) %d\n", p->link.name, dev->cs); 387 result = 1; 388 } else 389 result = 0; 390 391 result += physical_doUpdateSet(d, r, w, e, n, 0); 392 393 return result; 394 } 395 396 static int 397 ether_IsSet(struct fdescriptor *d, const fd_set *fdset) 398 { 399 struct physical *p = descriptor2physical(d); 400 struct etherdevice *dev = device2ether(p->handler); 401 int result; 402 403 result = dev->cs >= 0 && FD_ISSET(dev->cs, fdset); 404 result += physical_IsSet(d, fdset); 405 406 return result; 407 } 408 409 static void 410 ether_DescriptorRead(struct fdescriptor *d, struct bundle *bundle, 411 const fd_set *fdset) 412 { 413 struct physical *p = descriptor2physical(d); 414 struct etherdevice *dev = device2ether(p->handler); 415 416 if (dev->cs >= 0 && FD_ISSET(dev->cs, fdset)) { 417 ether_MessageIn(dev); 418 if (dev->connected == CARRIER_LOST) { 419 log_Printf(LogPHASE, "%s: Device disconnected\n", p->link.name); 420 datalink_Down(p->dl, CLOSE_NORMAL); 421 return; 422 } 423 } 424 425 if (physical_IsSet(d, fdset)) 426 physical_DescriptorRead(d, bundle, fdset); 427 } 428 429 static struct device * 430 ether_Abandon(struct etherdevice *dev, struct physical *p) 431 { 432 /* Abandon our node construction */ 433 close(dev->cs); 434 close(p->fd); 435 p->fd = -2; /* Nobody else need try.. */ 436 free(dev); 437 438 return NULL; 439 } 440 441 struct device * 442 ether_Create(struct physical *p) 443 { 444 u_char rbuf[2048]; 445 struct etherdevice *dev; 446 struct ng_mesg *resp; 447 const struct hooklist *hlist; 448 const struct nodeinfo *ninfo; 449 char *path, *sessionid; 450 const char *mode; 451 size_t ifacelen; 452 unsigned f; 453 454 dev = NULL; 455 path = NULL; 456 ifacelen = 0; 457 if (p->fd < 0 && !strncasecmp(p->name.full, NG_PPPOE_NODE_TYPE, 458 PPPOE_NODE_TYPE_LEN) && 459 p->name.full[PPPOE_NODE_TYPE_LEN] == ':') { 460 const struct linkinfo *nlink; 461 struct ngpppoe_init_data *data; 462 struct ngm_mkpeer mkp; 463 struct ngm_connect ngc; 464 const char *iface, *provider; 465 char etherid[12]; 466 int providerlen; 467 char connectpath[sizeof dev->hook + 2]; /* .:<hook> */ 468 469 p->fd--; /* We own the device - change fd */ 470 471 loadmodules(LOAD_VERBOSLY, "netgraph", "ng_ether", "ng_pppoe", "ng_socket", 472 NULL); 473 474 if ((dev = malloc(sizeof *dev)) == NULL) 475 return NULL; 476 477 iface = p->name.full + PPPOE_NODE_TYPE_LEN + 1; 478 479 provider = strchr(iface, ':'); 480 if (provider) { 481 ifacelen = provider - iface; 482 provider++; 483 providerlen = strlen(provider); 484 } else { 485 ifacelen = strlen(iface); 486 provider = ""; 487 providerlen = 0; 488 } 489 490 /* 491 * We're going to do this (where tunN is our tunnel device): 492 * 493 * .---------. 494 * | ether | 495 * | <iface> | dev->cs 496 * `---------' | 497 * (orphan) p->fd | 498 * | | | 499 * | | | 500 * (ethernet) | | 501 * .---------. .-----------. 502 * | pppoe | | socket | 503 * | <iface> |(tunN)<---->(tunN)| <unnamed> | 504 * `--------- `-----------' 505 * (tunX) 506 * ^ 507 * | 508 * `--->(tunX) 509 */ 510 511 /* Create a socket node */ 512 if (ID0NgMkSockNode(NULL, &dev->cs, &p->fd) == -1) { 513 log_Printf(LogWARN, "Cannot create netgraph socket node: %s\n", 514 strerror(errno)); 515 free(dev); 516 p->fd = -2; 517 return NULL; 518 } 519 520 /* 521 * Ask for a list of hooks attached to the "ether" node. This node should 522 * magically exist as a way of hooking stuff onto an ethernet device 523 */ 524 path = (char *)alloca(ifacelen + 2); 525 sprintf(path, "%.*s:", (int)ifacelen, iface); 526 if (NgSendMsg(dev->cs, path, NGM_GENERIC_COOKIE, NGM_LISTHOOKS, 527 NULL, 0) < 0) { 528 log_Printf(LogWARN, "%s Cannot send a netgraph message: %s\n", 529 path, strerror(errno)); 530 return ether_Abandon(dev, p); 531 } 532 533 /* Get our list back */ 534 resp = (struct ng_mesg *)rbuf; 535 if (NgRecvMsg(dev->cs, resp, sizeof rbuf, NULL) <= 0) { 536 log_Printf(LogWARN, "Cannot get netgraph response: %s\n", 537 strerror(errno)); 538 return ether_Abandon(dev, p); 539 } 540 541 hlist = (const struct hooklist *)resp->data; 542 ninfo = &hlist->nodeinfo; 543 544 /* Make sure we've got the right type of node */ 545 if (strncmp(ninfo->type, NG_ETHER_NODE_TYPE, 546 sizeof NG_ETHER_NODE_TYPE - 1)) { 547 log_Printf(LogWARN, "%s Unexpected node type ``%s'' (wanted ``" 548 NG_ETHER_NODE_TYPE "'')\n", path, ninfo->type); 549 return ether_Abandon(dev, p); 550 } 551 552 log_Printf(LogDEBUG, "List of netgraph node ``%s'' (id %x) hooks:\n", 553 path, ninfo->id); 554 555 /* look for a hook already attached. */ 556 for (f = 0; f < ninfo->hooks; f++) { 557 nlink = &hlist->link[f]; 558 559 log_Printf(LogDEBUG, " Found %s -> %s\n", nlink->ourhook, 560 nlink->peerhook); 561 562 if (!strcmp(nlink->ourhook, NG_ETHER_HOOK_ORPHAN) || 563 !strcmp(nlink->ourhook, NG_ETHER_HOOK_DIVERT)) { 564 /* 565 * Something is using the data coming out of this ``ether'' node. 566 * If it's a PPPoE node, we use that node, otherwise we complain that 567 * someone else is using the node. 568 */ 569 if (!strcmp(nlink->nodeinfo.type, NG_PPPOE_NODE_TYPE)) 570 /* Use this PPPoE node ! */ 571 snprintf(ngc.path, sizeof ngc.path, "[%x]:", nlink->nodeinfo.id); 572 else { 573 log_Printf(LogWARN, "%s Node type ``%s'' is currently active\n", 574 path, nlink->nodeinfo.type); 575 return ether_Abandon(dev, p); 576 } 577 break; 578 } 579 } 580 581 if (f == ninfo->hooks) { 582 /* 583 * Create a new ``PPPoE'' node connected to the ``ether'' node using 584 * the ``orphan'' and ``ethernet'' hooks 585 */ 586 snprintf(mkp.type, sizeof mkp.type, "%s", NG_PPPOE_NODE_TYPE); 587 snprintf(mkp.ourhook, sizeof mkp.ourhook, "%s", NG_ETHER_HOOK_ORPHAN); 588 snprintf(mkp.peerhook, sizeof mkp.peerhook, "%s", NG_PPPOE_HOOK_ETHERNET); 589 snprintf(etherid, sizeof etherid, "[%x]:", ninfo->id); 590 591 log_Printf(LogDEBUG, "Creating PPPoE netgraph node %s%s -> %s\n", 592 etherid, mkp.ourhook, mkp.peerhook); 593 594 if (NgSendMsg(dev->cs, etherid, NGM_GENERIC_COOKIE, 595 NGM_MKPEER, &mkp, sizeof mkp) < 0) { 596 log_Printf(LogWARN, "%s Cannot create PPPoE netgraph node: %s\n", 597 etherid, strerror(errno)); 598 return ether_Abandon(dev, p); 599 } 600 601 snprintf(ngc.path, sizeof ngc.path, "%s%s", path, NG_ETHER_HOOK_ORPHAN); 602 } 603 604 snprintf(dev->hook, sizeof dev->hook, "%s%d", 605 TUN_NAME, p->dl->bundle->unit); 606 607 /* 608 * Connect the PPPoE node to our socket node. 609 * ngc.path has already been set up 610 */ 611 snprintf(ngc.ourhook, sizeof ngc.ourhook, "%s", dev->hook); 612 memcpy(ngc.peerhook, ngc.ourhook, sizeof ngc.peerhook); 613 614 log_Printf(LogDEBUG, "Connecting netgraph socket .:%s -> %s:%s\n", 615 ngc.ourhook, ngc.path, ngc.peerhook); 616 if (NgSendMsg(dev->cs, ".:", NGM_GENERIC_COOKIE, 617 NGM_CONNECT, &ngc, sizeof ngc) < 0) { 618 log_Printf(LogWARN, "Cannot connect PPPoE and socket netgraph " 619 "nodes: %s\n", strerror(errno)); 620 return ether_Abandon(dev, p); 621 } 622 623 /* Bring the Ethernet interface up */ 624 path[ifacelen] = '\0'; /* Remove the trailing ':' */ 625 if (!iface_SetFlags(path, IFF_UP)) 626 log_Printf(LogWARN, "%s: Failed to set the IFF_UP flag on %s\n", 627 p->link.name, path); 628 629 snprintf(connectpath, sizeof connectpath, ".:%s", dev->hook); 630 631 /* Configure node to 3Com mode if needed */ 632 if (p->cfg.pppoe_configured) { 633 mode = p->cfg.nonstandard_pppoe ? NG_PPPOE_NONSTANDARD : NG_PPPOE_STANDARD; 634 if (NgSendMsg(dev->cs, connectpath, NGM_PPPOE_COOKIE, 635 NGM_PPPOE_SETMODE, mode, strlen(mode) + 1) == -1) { 636 log_Printf(LogWARN, "``%s'': Cannot configure netgraph node: %s\n", 637 connectpath, strerror(errno)); 638 return ether_Abandon(dev, p); 639 } 640 } 641 642 /* And finally, request a connection to the given provider */ 643 644 data = (struct ngpppoe_init_data *)alloca(sizeof *data + providerlen); 645 snprintf(data->hook, sizeof data->hook, "%s", dev->hook); 646 memcpy(data->data, provider, providerlen); 647 data->data_len = providerlen; 648 649 log_Printf(LogDEBUG, "Sending PPPOE_CONNECT to %s\n", connectpath); 650 if (NgSendMsg(dev->cs, connectpath, NGM_PPPOE_COOKIE, 651 NGM_PPPOE_CONNECT, data, sizeof *data + providerlen) == -1) { 652 log_Printf(LogWARN, "``%s'': Cannot start netgraph node: %s\n", 653 connectpath, strerror(errno)); 654 return ether_Abandon(dev, p); 655 } 656 657 /* Hook things up so that we monitor dev->cs */ 658 p->desc.UpdateSet = ether_UpdateSet; 659 p->desc.IsSet = ether_IsSet; 660 p->desc.Read = ether_DescriptorRead; 661 662 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 663 switch (p->cfg.cd.necessity) { 664 case CD_VARIABLE: 665 dev->dev.cd.delay = p->cfg.cd.delay; 666 break; 667 case CD_REQUIRED: 668 dev->dev.cd = p->cfg.cd; 669 break; 670 case CD_NOTREQUIRED: 671 log_Printf(LogWARN, "%s: Carrier must be set, using ``set cd %d!''\n", 672 p->link.name, dev->dev.cd.delay); 673 case CD_DEFAULT: 674 break; 675 } 676 677 dev->timeout = dev->dev.cd.delay; 678 dev->connected = CARRIER_PENDING; 679 /* This will be overridden by our session id - if provided by netgraph */ 680 dev->slot = GetIfIndex(path); 681 } else { 682 /* See if we're a netgraph socket */ 683 struct stat st; 684 685 if (fstat(p->fd, &st) != -1 && (st.st_mode & S_IFSOCK)) { 686 struct sockaddr_storage ssock; 687 struct sockaddr *sock = (struct sockaddr *)&ssock; 688 int sz; 689 690 sz = sizeof ssock; 691 if (getsockname(p->fd, sock, &sz) == -1) { 692 log_Printf(LogPHASE, "%s: Link is a closed socket !\n", p->link.name); 693 close(p->fd); 694 p->fd = -1; 695 return NULL; 696 } 697 698 if (sock->sa_family == AF_NETGRAPH) { 699 /* 700 * It's a netgraph node... We can't determine hook names etc, so we 701 * stay pretty impartial.... 702 */ 703 log_Printf(LogPHASE, "%s: Link is a netgraph node\n", p->link.name); 704 705 if ((dev = malloc(sizeof *dev)) == NULL) { 706 log_Printf(LogWARN, "%s: Cannot allocate an ether device: %s\n", 707 p->link.name, strerror(errno)); 708 return NULL; 709 } 710 711 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 712 dev->cs = -1; 713 dev->timeout = 0; 714 dev->connected = CARRIER_OK; 715 *dev->hook = '\0'; 716 717 /* 718 * If we're being envoked from pppoed(8), we may have a SESSIONID 719 * set in the environment. If so, use it as the slot 720 */ 721 if ((sessionid = getenv("SESSIONID")) != NULL) { 722 char *end; 723 u_long slot; 724 725 slot = strtoul(sessionid, &end, 16); 726 dev->slot = end != sessionid && *end == '\0' ? slot : 0; 727 } else 728 dev->slot = 0; 729 } 730 } 731 } 732 733 if (dev) { 734 physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 735 return &dev->dev; 736 } 737 738 return NULL; 739 } 740