1 /*- 2 * Copyright (c) 1999 Brian Somers <brian@Awfulhak.org> 3 * 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #include <sys/param.h> 30 #include <sys/socket.h> 31 #include <sys/un.h> 32 #include <netinet/in.h> 33 #include <arpa/inet.h> 34 #include <netdb.h> 35 #include <netgraph.h> 36 #include <net/ethernet.h> 37 #include <net/if.h> 38 #include <net/route.h> 39 #include <netinet/in_systm.h> 40 #include <netinet/ip.h> 41 #include <netgraph/ng_ether.h> 42 #include <netgraph/ng_message.h> 43 #include <netgraph/ng_pppoe.h> 44 #include <netgraph/ng_socket.h> 45 46 #include <errno.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 #include <sysexits.h> 51 #include <sys/fcntl.h> 52 #include <sys/stat.h> 53 #include <sys/uio.h> 54 #include <termios.h> 55 #include <sys/time.h> 56 #include <syslog.h> 57 #include <unistd.h> 58 59 #include "layer.h" 60 #include "defs.h" 61 #include "mbuf.h" 62 #include "log.h" 63 #include "timer.h" 64 #include "lqr.h" 65 #include "hdlc.h" 66 #include "throughput.h" 67 #include "fsm.h" 68 #include "lcp.h" 69 #include "ccp.h" 70 #include "link.h" 71 #include "async.h" 72 #include "descriptor.h" 73 #include "physical.h" 74 #include "main.h" 75 #include "mp.h" 76 #include "chat.h" 77 #include "auth.h" 78 #include "chap.h" 79 #include "cbcp.h" 80 #include "datalink.h" 81 #include "slcompress.h" 82 #include "iplist.h" 83 #include "ncpaddr.h" 84 #include "ip.h" 85 #include "ipcp.h" 86 #include "filter.h" 87 #ifndef NORADIUS 88 #include "radius.h" 89 #endif 90 #include "ipv6cp.h" 91 #include "ncp.h" 92 #include "bundle.h" 93 #include "id.h" 94 #include "iface.h" 95 #include "route.h" 96 #include "ether.h" 97 98 99 #define PPPOE_NODE_TYPE_LEN (sizeof NG_PPPOE_NODE_TYPE - 1) /* "PPPoE" */ 100 101 struct etherdevice { 102 struct device dev; /* What struct physical knows about */ 103 int cs; /* Control socket */ 104 int connected; /* Are we connected yet ? */ 105 int timeout; /* Seconds attempting to connect */ 106 char hook[sizeof TUN_NAME + 11]; /* Our socket node hook */ 107 u_int32_t slot; /* ifindex << 24 | unit */ 108 }; 109 110 #define device2ether(d) \ 111 ((d)->type == ETHER_DEVICE ? (struct etherdevice *)d : NULL) 112 113 int 114 ether_DeviceSize(void) 115 { 116 return sizeof(struct etherdevice); 117 } 118 119 static ssize_t 120 ether_Write(struct physical *p, const void *v, size_t n) 121 { 122 struct etherdevice *dev = device2ether(p->handler); 123 124 return NgSendData(p->fd, dev->hook, v, n) == -1 ? -1 : n; 125 } 126 127 static ssize_t 128 ether_Read(struct physical *p, void *v, size_t n) 129 { 130 char hook[sizeof TUN_NAME + 11]; 131 132 return NgRecvData(p->fd, v, n, hook); 133 } 134 135 static int 136 ether_RemoveFromSet(struct physical *p, fd_set *r, fd_set *w, fd_set *e) 137 { 138 struct etherdevice *dev = device2ether(p->handler); 139 int result; 140 141 if (r && dev->cs >= 0 && FD_ISSET(dev->cs, r)) { 142 FD_CLR(dev->cs, r); 143 log_Printf(LogTIMER, "%s: fdunset(ctrl) %d\n", p->link.name, dev->cs); 144 result = 1; 145 } else 146 result = 0; 147 148 /* Careful... physical_RemoveFromSet() called us ! */ 149 150 p->handler->removefromset = NULL; 151 result += physical_RemoveFromSet(p, r, w, e); 152 p->handler->removefromset = ether_RemoveFromSet; 153 154 return result; 155 } 156 157 static void 158 ether_Free(struct physical *p) 159 { 160 struct etherdevice *dev = device2ether(p->handler); 161 162 physical_SetDescriptor(p); 163 if (dev->cs != -1) 164 close(dev->cs); 165 free(dev); 166 } 167 168 static const char * 169 ether_OpenInfo(struct physical *p) 170 { 171 struct etherdevice *dev = device2ether(p->handler); 172 173 switch (dev->connected) { 174 case CARRIER_PENDING: 175 return "negotiating"; 176 case CARRIER_OK: 177 return "established"; 178 } 179 180 return "disconnected"; 181 } 182 183 static int 184 ether_Slot(struct physical *p) 185 { 186 struct etherdevice *dev = device2ether(p->handler); 187 188 return dev->slot; 189 } 190 191 192 static void 193 ether_device2iov(struct device *d, struct iovec *iov, int *niov, 194 int maxiov, int *auxfd, int *nauxfd) 195 { 196 struct etherdevice *dev = device2ether(d); 197 int sz = physical_MaxDeviceSize(); 198 199 iov[*niov].iov_base = realloc(d, sz); 200 if (iov[*niov].iov_base == NULL) { 201 log_Printf(LogALERT, "Failed to allocate memory: %d\n", sz); 202 AbortProgram(EX_OSERR); 203 } 204 iov[*niov].iov_len = sz; 205 (*niov)++; 206 207 if (dev->cs >= 0) { 208 *auxfd = dev->cs; 209 (*nauxfd)++; 210 } 211 } 212 213 static void 214 ether_MessageIn(struct etherdevice *dev) 215 { 216 char msgbuf[sizeof(struct ng_mesg) + sizeof(struct ngpppoe_sts)]; 217 struct ng_mesg *rep = (struct ng_mesg *)msgbuf; 218 struct ngpppoe_sts *sts = (struct ngpppoe_sts *)(msgbuf + sizeof *rep); 219 char *end, unknown[14], sessionid[5]; 220 const char *msg; 221 struct timeval t; 222 fd_set *r; 223 u_long slot; 224 int ret; 225 226 if (dev->cs < 0) 227 return; 228 229 if ((r = mkfdset()) == NULL) { 230 log_Printf(LogERROR, "DoLoop: Cannot create fd_set\n"); 231 return; 232 } 233 zerofdset(r); 234 FD_SET(dev->cs, r); 235 t.tv_sec = t.tv_usec = 0; 236 ret = select(dev->cs + 1, r, NULL, NULL, &t); 237 free(r); 238 239 if (ret <= 0) 240 return; 241 242 if (NgRecvMsg(dev->cs, rep, sizeof msgbuf, NULL) <= 0) 243 return; 244 245 if (rep->header.version != NG_VERSION) { 246 log_Printf(LogWARN, "%ld: Unexpected netgraph version, expected %ld\n", 247 (long)rep->header.version, (long)NG_VERSION); 248 return; 249 } 250 251 if (rep->header.typecookie != NGM_PPPOE_COOKIE) { 252 log_Printf(LogWARN, "%ld: Unexpected netgraph cookie, expected %ld\n", 253 (long)rep->header.typecookie, (long)NGM_PPPOE_COOKIE); 254 return; 255 } 256 257 switch (rep->header.cmd) { 258 case NGM_PPPOE_SET_FLAG: msg = "SET_FLAG"; break; 259 case NGM_PPPOE_CONNECT: msg = "CONNECT"; break; 260 case NGM_PPPOE_LISTEN: msg = "LISTEN"; break; 261 case NGM_PPPOE_OFFER: msg = "OFFER"; break; 262 case NGM_PPPOE_SUCCESS: msg = "SUCCESS"; break; 263 case NGM_PPPOE_FAIL: msg = "FAIL"; break; 264 case NGM_PPPOE_CLOSE: msg = "CLOSE"; break; 265 case NGM_PPPOE_GET_STATUS: msg = "GET_STATUS"; break; 266 case NGM_PPPOE_ACNAME: 267 msg = "ACNAME"; 268 if (setenv("ACNAME", sts->hook, 1) != 0) 269 log_Printf(LogWARN, "setenv: cannot set ACNAME=%s: %m", sts->hook); 270 break; 271 case NGM_PPPOE_SESSIONID: 272 msg = "SESSIONID"; 273 snprintf(sessionid, sizeof sessionid, "%04x", *(u_int16_t *)sts); 274 if (setenv("SESSIONID", sessionid, 1) != 0) 275 syslog(LOG_WARNING, "setenv: cannot set SESSIONID=%s: %m", 276 sessionid); 277 /* Use this in preference to our interface index */ 278 slot = strtoul(sessionid, &end, 16); 279 if (end != sessionid && *end == '\0') 280 dev->slot = slot; 281 break; 282 default: 283 snprintf(unknown, sizeof unknown, "<%d>", (int)rep->header.cmd); 284 msg = unknown; 285 break; 286 } 287 288 log_Printf(LogPHASE, "Received NGM_PPPOE_%s (hook \"%s\")\n", msg, sts->hook); 289 290 switch (rep->header.cmd) { 291 case NGM_PPPOE_SUCCESS: 292 dev->connected = CARRIER_OK; 293 break; 294 case NGM_PPPOE_FAIL: 295 case NGM_PPPOE_CLOSE: 296 dev->connected = CARRIER_LOST; 297 break; 298 } 299 } 300 301 static int 302 ether_AwaitCarrier(struct physical *p) 303 { 304 struct etherdevice *dev = device2ether(p->handler); 305 306 if (dev->connected != CARRIER_OK && !dev->timeout--) 307 dev->connected = CARRIER_LOST; 308 else if (dev->connected == CARRIER_PENDING) 309 ether_MessageIn(dev); 310 311 return dev->connected; 312 } 313 314 static const struct device baseetherdevice = { 315 ETHER_DEVICE, 316 "ether", 317 1492, 318 { CD_REQUIRED, DEF_ETHERCDDELAY }, 319 ether_AwaitCarrier, 320 ether_RemoveFromSet, 321 NULL, 322 NULL, 323 NULL, 324 NULL, 325 NULL, 326 ether_Free, 327 ether_Read, 328 ether_Write, 329 ether_device2iov, 330 NULL, 331 ether_OpenInfo, 332 ether_Slot 333 }; 334 335 struct device * 336 ether_iov2device(int type, struct physical *p, struct iovec *iov, int *niov, 337 int maxiov, int *auxfd, int *nauxfd) 338 { 339 if (type == ETHER_DEVICE) { 340 struct etherdevice *dev = (struct etherdevice *)iov[(*niov)++].iov_base; 341 342 dev = realloc(dev, sizeof *dev); /* Reduce to the correct size */ 343 if (dev == NULL) { 344 log_Printf(LogALERT, "Failed to allocate memory: %d\n", 345 (int)(sizeof *dev)); 346 AbortProgram(EX_OSERR); 347 } 348 349 if (*nauxfd) { 350 dev->cs = *auxfd; 351 (*nauxfd)--; 352 } else 353 dev->cs = -1; 354 355 /* Refresh function pointers etc */ 356 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 357 358 physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 359 return &dev->dev; 360 } 361 362 return NULL; 363 } 364 365 static int 366 ether_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, int *n) 367 { 368 struct physical *p = descriptor2physical(d); 369 struct etherdevice *dev = device2ether(p->handler); 370 int result; 371 372 if (r && dev->cs >= 0) { 373 FD_SET(dev->cs, r); 374 log_Printf(LogTIMER, "%s(ctrl): fdset(r) %d\n", p->link.name, dev->cs); 375 result = 1; 376 } else 377 result = 0; 378 379 result += physical_doUpdateSet(d, r, w, e, n, 0); 380 381 return result; 382 } 383 384 static int 385 ether_IsSet(struct fdescriptor *d, const fd_set *fdset) 386 { 387 struct physical *p = descriptor2physical(d); 388 struct etherdevice *dev = device2ether(p->handler); 389 int result; 390 391 result = dev->cs >= 0 && FD_ISSET(dev->cs, fdset); 392 result += physical_IsSet(d, fdset); 393 394 return result; 395 } 396 397 static void 398 ether_DescriptorRead(struct fdescriptor *d, struct bundle *bundle, 399 const fd_set *fdset) 400 { 401 struct physical *p = descriptor2physical(d); 402 struct etherdevice *dev = device2ether(p->handler); 403 404 if (dev->cs >= 0 && FD_ISSET(dev->cs, fdset)) { 405 ether_MessageIn(dev); 406 if (dev->connected == CARRIER_LOST) { 407 log_Printf(LogPHASE, "%s: Device disconnected\n", p->link.name); 408 datalink_Down(p->dl, CLOSE_NORMAL); 409 return; 410 } 411 } 412 413 if (physical_IsSet(d, fdset)) 414 physical_DescriptorRead(d, bundle, fdset); 415 } 416 417 static struct device * 418 ether_Abandon(struct etherdevice *dev, struct physical *p) 419 { 420 /* Abandon our node construction */ 421 close(dev->cs); 422 close(p->fd); 423 p->fd = -2; /* Nobody else need try.. */ 424 free(dev); 425 426 return NULL; 427 } 428 429 struct device * 430 ether_Create(struct physical *p) 431 { 432 u_char rbuf[2048]; 433 struct etherdevice *dev; 434 struct ng_mesg *resp; 435 const struct hooklist *hlist; 436 const struct nodeinfo *ninfo; 437 char *path, *sessionid; 438 int ifacelen, f; 439 440 dev = NULL; 441 path = NULL; 442 ifacelen = 0; 443 if (p->fd < 0 && !strncasecmp(p->name.full, NG_PPPOE_NODE_TYPE, 444 PPPOE_NODE_TYPE_LEN) && 445 p->name.full[PPPOE_NODE_TYPE_LEN] == ':') { 446 const struct linkinfo *nlink; 447 struct ngpppoe_init_data *data; 448 struct ngm_mkpeer mkp; 449 struct ngm_connect ngc; 450 const char *iface, *provider; 451 char etherid[12]; 452 int providerlen; 453 char connectpath[sizeof dev->hook + 2]; /* .:<hook> */ 454 455 p->fd--; /* We own the device - change fd */ 456 457 loadmodules(LOAD_VERBOSLY, "netgraph", "ng_ether", "ng_pppoe", "ng_socket", 458 NULL); 459 460 if ((dev = malloc(sizeof *dev)) == NULL) 461 return NULL; 462 463 iface = p->name.full + PPPOE_NODE_TYPE_LEN + 1; 464 465 provider = strchr(iface, ':'); 466 if (provider) { 467 ifacelen = provider - iface; 468 provider++; 469 providerlen = strlen(provider); 470 } else { 471 ifacelen = strlen(iface); 472 provider = ""; 473 providerlen = 0; 474 } 475 476 /* 477 * We're going to do this (where tunN is our tunnel device): 478 * 479 * .---------. 480 * | ether | 481 * | <iface> | dev->cs 482 * `---------' | 483 * (orphan) p->fd | 484 * | | | 485 * | | | 486 * (ethernet) | | 487 * .---------. .-----------. 488 * | pppoe | | socket | 489 * | <iface> |(tunN)<---->(tunN)| <unnamed> | 490 * `--------- `-----------' 491 * (tunX) 492 * ^ 493 * | 494 * `--->(tunX) 495 */ 496 497 /* Create a socket node */ 498 if (ID0NgMkSockNode(NULL, &dev->cs, &p->fd) == -1) { 499 log_Printf(LogWARN, "Cannot create netgraph socket node: %s\n", 500 strerror(errno)); 501 free(dev); 502 p->fd = -2; 503 return NULL; 504 } 505 506 /* 507 * Ask for a list of hooks attached to the "ether" node. This node should 508 * magically exist as a way of hooking stuff onto an ethernet device 509 */ 510 path = (char *)alloca(ifacelen + 2); 511 sprintf(path, "%.*s:", ifacelen, iface); 512 if (NgSendMsg(dev->cs, path, NGM_GENERIC_COOKIE, NGM_LISTHOOKS, 513 NULL, 0) < 0) { 514 log_Printf(LogWARN, "%s Cannot send a netgraph message: %s\n", 515 path, strerror(errno)); 516 return ether_Abandon(dev, p); 517 } 518 519 /* Get our list back */ 520 resp = (struct ng_mesg *)rbuf; 521 if (NgRecvMsg(dev->cs, resp, sizeof rbuf, NULL) <= 0) { 522 log_Printf(LogWARN, "Cannot get netgraph response: %s\n", 523 strerror(errno)); 524 return ether_Abandon(dev, p); 525 } 526 527 hlist = (const struct hooklist *)resp->data; 528 ninfo = &hlist->nodeinfo; 529 530 /* Make sure we've got the right type of node */ 531 if (strncmp(ninfo->type, NG_ETHER_NODE_TYPE, 532 sizeof NG_ETHER_NODE_TYPE - 1)) { 533 log_Printf(LogWARN, "%s Unexpected node type ``%s'' (wanted ``" 534 NG_ETHER_NODE_TYPE "'')\n", path, ninfo->type); 535 return ether_Abandon(dev, p); 536 } 537 538 log_Printf(LogDEBUG, "List of netgraph node ``%s'' (id %x) hooks:\n", 539 path, ninfo->id); 540 541 /* look for a hook already attached. */ 542 for (f = 0; f < ninfo->hooks; f++) { 543 nlink = &hlist->link[f]; 544 545 log_Printf(LogDEBUG, " Found %s -> %s\n", nlink->ourhook, 546 nlink->peerhook); 547 548 if (!strcmp(nlink->ourhook, NG_ETHER_HOOK_ORPHAN) || 549 !strcmp(nlink->ourhook, NG_ETHER_HOOK_DIVERT)) { 550 /* 551 * Something is using the data coming out of this ``ether'' node. 552 * If it's a PPPoE node, we use that node, otherwise we complain that 553 * someone else is using the node. 554 */ 555 if (!strcmp(nlink->nodeinfo.type, NG_PPPOE_NODE_TYPE)) 556 /* Use this PPPoE node ! */ 557 snprintf(ngc.path, sizeof ngc.path, "[%x]:", nlink->nodeinfo.id); 558 else { 559 log_Printf(LogWARN, "%s Node type ``%s'' is currently active\n", 560 path, nlink->nodeinfo.type); 561 return ether_Abandon(dev, p); 562 } 563 break; 564 } 565 } 566 567 if (f == ninfo->hooks) { 568 /* 569 * Create a new ``PPPoE'' node connected to the ``ether'' node using 570 * the ``orphan'' and ``ethernet'' hooks 571 */ 572 snprintf(mkp.type, sizeof mkp.type, "%s", NG_PPPOE_NODE_TYPE); 573 snprintf(mkp.ourhook, sizeof mkp.ourhook, "%s", NG_ETHER_HOOK_ORPHAN); 574 snprintf(mkp.peerhook, sizeof mkp.peerhook, "%s", NG_PPPOE_HOOK_ETHERNET); 575 snprintf(etherid, sizeof etherid, "[%x]:", ninfo->id); 576 577 log_Printf(LogDEBUG, "Creating PPPoE netgraph node %s%s -> %s\n", 578 etherid, mkp.ourhook, mkp.peerhook); 579 580 if (NgSendMsg(dev->cs, etherid, NGM_GENERIC_COOKIE, 581 NGM_MKPEER, &mkp, sizeof mkp) < 0) { 582 log_Printf(LogWARN, "%s Cannot create PPPoE netgraph node: %s\n", 583 etherid, strerror(errno)); 584 return ether_Abandon(dev, p); 585 } 586 587 snprintf(ngc.path, sizeof ngc.path, "%s%s", path, NG_ETHER_HOOK_ORPHAN); 588 } 589 590 snprintf(dev->hook, sizeof dev->hook, "%s%d", 591 TUN_NAME, p->dl->bundle->unit); 592 593 /* 594 * Connect the PPPoE node to our socket node. 595 * ngc.path has already been set up 596 */ 597 snprintf(ngc.ourhook, sizeof ngc.ourhook, "%s", dev->hook); 598 memcpy(ngc.peerhook, ngc.ourhook, sizeof ngc.peerhook); 599 600 log_Printf(LogDEBUG, "Connecting netgraph socket .:%s -> %s:%s\n", 601 ngc.ourhook, ngc.path, ngc.peerhook); 602 if (NgSendMsg(dev->cs, ".:", NGM_GENERIC_COOKIE, 603 NGM_CONNECT, &ngc, sizeof ngc) < 0) { 604 log_Printf(LogWARN, "Cannot connect PPPoE and socket netgraph " 605 "nodes: %s\n", strerror(errno)); 606 return ether_Abandon(dev, p); 607 } 608 609 /* Bring the Ethernet interface up */ 610 path[ifacelen] = '\0'; /* Remove the trailing ':' */ 611 if (!iface_SetFlags(path, IFF_UP)) 612 log_Printf(LogWARN, "%s: Failed to set the IFF_UP flag on %s\n", 613 p->link.name, path); 614 615 /* And finally, request a connection to the given provider */ 616 617 data = (struct ngpppoe_init_data *)alloca(sizeof *data + providerlen); 618 snprintf(data->hook, sizeof data->hook, "%s", dev->hook); 619 memcpy(data->data, provider, providerlen); 620 data->data_len = providerlen; 621 622 snprintf(connectpath, sizeof connectpath, ".:%s", dev->hook); 623 log_Printf(LogDEBUG, "Sending PPPOE_CONNECT to %s\n", connectpath); 624 if (NgSendMsg(dev->cs, connectpath, NGM_PPPOE_COOKIE, 625 NGM_PPPOE_CONNECT, data, sizeof *data + providerlen) == -1) { 626 log_Printf(LogWARN, "``%s'': Cannot start netgraph node: %s\n", 627 connectpath, strerror(errno)); 628 return ether_Abandon(dev, p); 629 } 630 631 /* Hook things up so that we monitor dev->cs */ 632 p->desc.UpdateSet = ether_UpdateSet; 633 p->desc.IsSet = ether_IsSet; 634 p->desc.Read = ether_DescriptorRead; 635 636 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 637 switch (p->cfg.cd.necessity) { 638 case CD_VARIABLE: 639 dev->dev.cd.delay = p->cfg.cd.delay; 640 break; 641 case CD_REQUIRED: 642 dev->dev.cd = p->cfg.cd; 643 break; 644 case CD_NOTREQUIRED: 645 log_Printf(LogWARN, "%s: Carrier must be set, using ``set cd %d!''\n", 646 p->link.name, dev->dev.cd.delay); 647 case CD_DEFAULT: 648 break; 649 } 650 651 dev->timeout = dev->dev.cd.delay; 652 dev->connected = CARRIER_PENDING; 653 /* This will be overridden by our session id - if provided by netgraph */ 654 dev->slot = GetIfIndex(path); 655 } else { 656 /* See if we're a netgraph socket */ 657 struct stat st; 658 659 if (fstat(p->fd, &st) != -1 && (st.st_mode & S_IFSOCK)) { 660 struct sockaddr_storage ssock; 661 struct sockaddr *sock = (struct sockaddr *)&ssock; 662 int sz; 663 664 sz = sizeof ssock; 665 if (getsockname(p->fd, sock, &sz) == -1) { 666 log_Printf(LogPHASE, "%s: Link is a closed socket !\n", p->link.name); 667 close(p->fd); 668 p->fd = -1; 669 return NULL; 670 } 671 672 if (sock->sa_family == AF_NETGRAPH) { 673 /* 674 * It's a netgraph node... We can't determine hook names etc, so we 675 * stay pretty impartial.... 676 */ 677 log_Printf(LogPHASE, "%s: Link is a netgraph node\n", p->link.name); 678 679 if ((dev = malloc(sizeof *dev)) == NULL) { 680 log_Printf(LogWARN, "%s: Cannot allocate an ether device: %s\n", 681 p->link.name, strerror(errno)); 682 return NULL; 683 } 684 685 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 686 dev->cs = -1; 687 dev->timeout = 0; 688 dev->connected = CARRIER_OK; 689 *dev->hook = '\0'; 690 691 /* 692 * If we're being envoked from pppoed(8), we may have a SESSIONID 693 * set in the environment. If so, use it as the slot 694 */ 695 if ((sessionid = getenv("SESSIONID")) != NULL) { 696 char *end; 697 u_long slot; 698 699 slot = strtoul(sessionid, &end, 16); 700 dev->slot = end != sessionid && *end == '\0' ? slot : 0; 701 } else 702 dev->slot = 0; 703 } 704 } 705 } 706 707 if (dev) { 708 physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 709 return &dev->dev; 710 } 711 712 return NULL; 713 } 714