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/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 unsigned 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 : (ssize_t)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 __unused, int *auxfd, int *nauxfd) 195 { 196 struct etherdevice *dev; 197 int sz = physical_MaxDeviceSize(); 198 199 iov[*niov].iov_base = d = realloc(d, sz); 200 if (d == 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 dev = device2ether(d); 208 if (dev->cs >= 0) { 209 *auxfd = dev->cs; 210 (*nauxfd)++; 211 } 212 } 213 214 static void 215 ether_MessageIn(struct etherdevice *dev) 216 { 217 char msgbuf[sizeof(struct ng_mesg) + sizeof(struct ngpppoe_sts)]; 218 struct ng_mesg *rep = (struct ng_mesg *)msgbuf; 219 struct ngpppoe_sts *sts = (struct ngpppoe_sts *)(msgbuf + sizeof *rep); 220 char *end, unknown[14], sessionid[5]; 221 const char *msg; 222 struct timeval t; 223 fd_set *r; 224 u_long slot; 225 int asciilen, ret; 226 227 if (dev->cs < 0) 228 return; 229 230 if ((r = mkfdset()) == NULL) { 231 log_Printf(LogERROR, "DoLoop: Cannot create fd_set\n"); 232 return; 233 } 234 235 while (1) { 236 zerofdset(r); 237 FD_SET(dev->cs, r); 238 t.tv_sec = t.tv_usec = 0; 239 ret = select(dev->cs + 1, r, NULL, NULL, &t); 240 241 if (ret <= 0) 242 break; 243 244 if (NgRecvMsg(dev->cs, rep, sizeof msgbuf, NULL) <= 0) 245 break; 246 247 if (rep->header.version != NG_VERSION) { 248 log_Printf(LogWARN, "%ld: Unexpected netgraph version, expected %ld\n", 249 (long)rep->header.version, (long)NG_VERSION); 250 break; 251 } 252 253 if (rep->header.typecookie != NGM_PPPOE_COOKIE) { 254 log_Printf(LogWARN, "%ld: Unexpected netgraph cookie, expected %ld\n", 255 (long)rep->header.typecookie, (long)NGM_PPPOE_COOKIE); 256 break; 257 } 258 259 asciilen = 0; 260 switch (rep->header.cmd) { 261 case NGM_PPPOE_SET_FLAG: msg = "SET_FLAG"; break; 262 case NGM_PPPOE_CONNECT: msg = "CONNECT"; break; 263 case NGM_PPPOE_LISTEN: msg = "LISTEN"; break; 264 case NGM_PPPOE_OFFER: msg = "OFFER"; break; 265 case NGM_PPPOE_SUCCESS: msg = "SUCCESS"; break; 266 case NGM_PPPOE_FAIL: msg = "FAIL"; break; 267 case NGM_PPPOE_CLOSE: msg = "CLOSE"; break; 268 case NGM_PPPOE_GET_STATUS: msg = "GET_STATUS"; break; 269 case NGM_PPPOE_ACNAME: 270 msg = "ACNAME"; 271 if (setenv("ACNAME", sts->hook, 1) != 0) 272 log_Printf(LogWARN, "setenv: cannot set ACNAME=%s: %m", sts->hook); 273 asciilen = rep->header.arglen; 274 break; 275 case NGM_PPPOE_SESSIONID: 276 msg = "SESSIONID"; 277 snprintf(sessionid, sizeof sessionid, "%04x", *(u_int16_t *)sts); 278 if (setenv("SESSIONID", sessionid, 1) != 0) 279 syslog(LOG_WARNING, "setenv: cannot set SESSIONID=%s: %m", 280 sessionid); 281 /* Use this in preference to our interface index */ 282 slot = strtoul(sessionid, &end, 16); 283 if (end != sessionid && *end == '\0') 284 dev->slot = slot; 285 break; 286 default: 287 snprintf(unknown, sizeof unknown, "<%d>", (int)rep->header.cmd); 288 msg = unknown; 289 break; 290 } 291 292 if (asciilen) 293 log_Printf(LogPHASE, "Received NGM_PPPOE_%s (hook \"%.*s\")\n", 294 msg, asciilen, sts->hook); 295 else 296 log_Printf(LogPHASE, "Received NGM_PPPOE_%s\n", msg); 297 298 switch (rep->header.cmd) { 299 case NGM_PPPOE_SUCCESS: 300 dev->connected = CARRIER_OK; 301 break; 302 case NGM_PPPOE_FAIL: 303 case NGM_PPPOE_CLOSE: 304 dev->connected = CARRIER_LOST; 305 break; 306 } 307 } 308 free(r); 309 } 310 311 static int 312 ether_AwaitCarrier(struct physical *p) 313 { 314 struct etherdevice *dev = device2ether(p->handler); 315 316 if (dev->connected != CARRIER_OK && !dev->timeout--) 317 dev->connected = CARRIER_LOST; 318 else if (dev->connected == CARRIER_PENDING) 319 ether_MessageIn(dev); 320 321 return dev->connected; 322 } 323 324 static const struct device baseetherdevice = { 325 ETHER_DEVICE, 326 "ether", 327 1492, 328 { CD_REQUIRED, DEF_ETHERCDDELAY }, 329 ether_AwaitCarrier, 330 ether_RemoveFromSet, 331 NULL, 332 NULL, 333 NULL, 334 NULL, 335 NULL, 336 ether_Free, 337 ether_Read, 338 ether_Write, 339 ether_device2iov, 340 NULL, 341 ether_OpenInfo, 342 ether_Slot 343 }; 344 345 struct device * 346 ether_iov2device(int type, struct physical *p, struct iovec *iov, int *niov, 347 int maxiov __unused, int *auxfd, int *nauxfd) 348 { 349 if (type == ETHER_DEVICE) { 350 struct etherdevice *dev = (struct etherdevice *)iov[(*niov)++].iov_base; 351 352 dev = realloc(dev, sizeof *dev); /* Reduce to the correct size */ 353 if (dev == NULL) { 354 log_Printf(LogALERT, "Failed to allocate memory: %d\n", 355 (int)(sizeof *dev)); 356 AbortProgram(EX_OSERR); 357 } 358 359 if (*nauxfd) { 360 dev->cs = *auxfd; 361 (*nauxfd)--; 362 } else 363 dev->cs = -1; 364 365 /* Refresh function pointers etc */ 366 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 367 368 physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 369 return &dev->dev; 370 } 371 372 return NULL; 373 } 374 375 static int 376 ether_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, int *n) 377 { 378 struct physical *p = descriptor2physical(d); 379 struct etherdevice *dev = device2ether(p->handler); 380 int result; 381 382 if (r && dev->cs >= 0) { 383 FD_SET(dev->cs, r); 384 log_Printf(LogTIMER, "%s(ctrl): fdset(r) %d\n", p->link.name, dev->cs); 385 result = 1; 386 } else 387 result = 0; 388 389 result += physical_doUpdateSet(d, r, w, e, n, 0); 390 391 return result; 392 } 393 394 static int 395 ether_IsSet(struct fdescriptor *d, const fd_set *fdset) 396 { 397 struct physical *p = descriptor2physical(d); 398 struct etherdevice *dev = device2ether(p->handler); 399 int result; 400 401 result = dev->cs >= 0 && FD_ISSET(dev->cs, fdset); 402 result += physical_IsSet(d, fdset); 403 404 return result; 405 } 406 407 static void 408 ether_DescriptorRead(struct fdescriptor *d, struct bundle *bundle, 409 const fd_set *fdset) 410 { 411 struct physical *p = descriptor2physical(d); 412 struct etherdevice *dev = device2ether(p->handler); 413 414 if (dev->cs >= 0 && FD_ISSET(dev->cs, fdset)) { 415 ether_MessageIn(dev); 416 if (dev->connected == CARRIER_LOST) { 417 log_Printf(LogPHASE, "%s: Device disconnected\n", p->link.name); 418 datalink_Down(p->dl, CLOSE_NORMAL); 419 return; 420 } 421 } 422 423 if (physical_IsSet(d, fdset)) 424 physical_DescriptorRead(d, bundle, fdset); 425 } 426 427 static struct device * 428 ether_Abandon(struct etherdevice *dev, struct physical *p) 429 { 430 /* Abandon our node construction */ 431 close(dev->cs); 432 close(p->fd); 433 p->fd = -2; /* Nobody else need try.. */ 434 free(dev); 435 436 return NULL; 437 } 438 439 struct device * 440 ether_Create(struct physical *p) 441 { 442 u_char rbuf[2048]; 443 struct etherdevice *dev; 444 struct ng_mesg *resp; 445 const struct hooklist *hlist; 446 const struct nodeinfo *ninfo; 447 char *path, *sessionid; 448 const char *mode; 449 size_t ifacelen; 450 unsigned f; 451 452 dev = NULL; 453 path = NULL; 454 ifacelen = 0; 455 if (p->fd < 0 && !strncasecmp(p->name.full, NG_PPPOE_NODE_TYPE, 456 PPPOE_NODE_TYPE_LEN) && 457 p->name.full[PPPOE_NODE_TYPE_LEN] == ':') { 458 const struct linkinfo *nlink; 459 struct ngpppoe_init_data *data; 460 struct ngm_mkpeer mkp; 461 struct ngm_connect ngc; 462 const char *iface, *provider; 463 char etherid[12]; 464 int providerlen; 465 char connectpath[sizeof dev->hook + 2]; /* .:<hook> */ 466 467 p->fd--; /* We own the device - change fd */ 468 469 loadmodules(LOAD_VERBOSLY, "netgraph", "ng_ether", "ng_pppoe", "ng_socket", 470 NULL); 471 472 if ((dev = malloc(sizeof *dev)) == NULL) 473 return NULL; 474 475 iface = p->name.full + PPPOE_NODE_TYPE_LEN + 1; 476 477 provider = strchr(iface, ':'); 478 if (provider) { 479 ifacelen = provider - iface; 480 provider++; 481 providerlen = strlen(provider); 482 } else { 483 ifacelen = strlen(iface); 484 provider = ""; 485 providerlen = 0; 486 } 487 488 /* 489 * We're going to do this (where tunN is our tunnel device): 490 * 491 * .---------. 492 * | ether | 493 * | <iface> | dev->cs 494 * `---------' | 495 * (orphan) p->fd | 496 * | | | 497 * | | | 498 * (ethernet) | | 499 * .---------. .-----------. 500 * | pppoe | | socket | 501 * | <iface> |(tunN)<---->(tunN)| <unnamed> | 502 * `--------- `-----------' 503 * (tunX) 504 * ^ 505 * | 506 * `--->(tunX) 507 */ 508 509 /* Create a socket node */ 510 if (ID0NgMkSockNode(NULL, &dev->cs, &p->fd) == -1) { 511 log_Printf(LogWARN, "Cannot create netgraph socket node: %s\n", 512 strerror(errno)); 513 free(dev); 514 p->fd = -2; 515 return NULL; 516 } 517 518 /* 519 * Ask for a list of hooks attached to the "ether" node. This node should 520 * magically exist as a way of hooking stuff onto an ethernet device 521 */ 522 path = (char *)alloca(ifacelen + 2); 523 sprintf(path, "%.*s:", (int)ifacelen, iface); 524 if (NgSendMsg(dev->cs, path, NGM_GENERIC_COOKIE, NGM_LISTHOOKS, 525 NULL, 0) < 0) { 526 log_Printf(LogWARN, "%s Cannot send a netgraph message: %s\n", 527 path, strerror(errno)); 528 return ether_Abandon(dev, p); 529 } 530 531 /* Get our list back */ 532 resp = (struct ng_mesg *)rbuf; 533 if (NgRecvMsg(dev->cs, resp, sizeof rbuf, NULL) <= 0) { 534 log_Printf(LogWARN, "Cannot get netgraph response: %s\n", 535 strerror(errno)); 536 return ether_Abandon(dev, p); 537 } 538 539 hlist = (const struct hooklist *)resp->data; 540 ninfo = &hlist->nodeinfo; 541 542 /* Make sure we've got the right type of node */ 543 if (strncmp(ninfo->type, NG_ETHER_NODE_TYPE, 544 sizeof NG_ETHER_NODE_TYPE - 1)) { 545 log_Printf(LogWARN, "%s Unexpected node type ``%s'' (wanted ``" 546 NG_ETHER_NODE_TYPE "'')\n", path, ninfo->type); 547 return ether_Abandon(dev, p); 548 } 549 550 log_Printf(LogDEBUG, "List of netgraph node ``%s'' (id %x) hooks:\n", 551 path, ninfo->id); 552 553 /* look for a hook already attached. */ 554 for (f = 0; f < ninfo->hooks; f++) { 555 nlink = &hlist->link[f]; 556 557 log_Printf(LogDEBUG, " Found %s -> %s\n", nlink->ourhook, 558 nlink->peerhook); 559 560 if (!strcmp(nlink->ourhook, NG_ETHER_HOOK_ORPHAN) || 561 !strcmp(nlink->ourhook, NG_ETHER_HOOK_DIVERT)) { 562 /* 563 * Something is using the data coming out of this ``ether'' node. 564 * If it's a PPPoE node, we use that node, otherwise we complain that 565 * someone else is using the node. 566 */ 567 if (!strcmp(nlink->nodeinfo.type, NG_PPPOE_NODE_TYPE)) 568 /* Use this PPPoE node ! */ 569 snprintf(ngc.path, sizeof ngc.path, "[%x]:", nlink->nodeinfo.id); 570 else { 571 log_Printf(LogWARN, "%s Node type ``%s'' is currently active\n", 572 path, nlink->nodeinfo.type); 573 return ether_Abandon(dev, p); 574 } 575 break; 576 } 577 } 578 579 if (f == ninfo->hooks) { 580 /* 581 * Create a new ``PPPoE'' node connected to the ``ether'' node using 582 * the ``orphan'' and ``ethernet'' hooks 583 */ 584 snprintf(mkp.type, sizeof mkp.type, "%s", NG_PPPOE_NODE_TYPE); 585 snprintf(mkp.ourhook, sizeof mkp.ourhook, "%s", NG_ETHER_HOOK_ORPHAN); 586 snprintf(mkp.peerhook, sizeof mkp.peerhook, "%s", NG_PPPOE_HOOK_ETHERNET); 587 snprintf(etherid, sizeof etherid, "[%x]:", ninfo->id); 588 589 log_Printf(LogDEBUG, "Creating PPPoE netgraph node %s%s -> %s\n", 590 etherid, mkp.ourhook, mkp.peerhook); 591 592 if (NgSendMsg(dev->cs, etherid, NGM_GENERIC_COOKIE, 593 NGM_MKPEER, &mkp, sizeof mkp) < 0) { 594 log_Printf(LogWARN, "%s Cannot create PPPoE netgraph node: %s\n", 595 etherid, strerror(errno)); 596 return ether_Abandon(dev, p); 597 } 598 599 snprintf(ngc.path, sizeof ngc.path, "%s%s", path, NG_ETHER_HOOK_ORPHAN); 600 } 601 602 snprintf(dev->hook, sizeof dev->hook, "%s%d", 603 TUN_NAME, p->dl->bundle->unit); 604 605 /* 606 * Connect the PPPoE node to our socket node. 607 * ngc.path has already been set up 608 */ 609 snprintf(ngc.ourhook, sizeof ngc.ourhook, "%s", dev->hook); 610 memcpy(ngc.peerhook, ngc.ourhook, sizeof ngc.peerhook); 611 612 log_Printf(LogDEBUG, "Connecting netgraph socket .:%s -> %s:%s\n", 613 ngc.ourhook, ngc.path, ngc.peerhook); 614 if (NgSendMsg(dev->cs, ".:", NGM_GENERIC_COOKIE, 615 NGM_CONNECT, &ngc, sizeof ngc) < 0) { 616 log_Printf(LogWARN, "Cannot connect PPPoE and socket netgraph " 617 "nodes: %s\n", strerror(errno)); 618 return ether_Abandon(dev, p); 619 } 620 621 /* Bring the Ethernet interface up */ 622 path[ifacelen] = '\0'; /* Remove the trailing ':' */ 623 if (!iface_SetFlags(path, IFF_UP)) 624 log_Printf(LogWARN, "%s: Failed to set the IFF_UP flag on %s\n", 625 p->link.name, path); 626 627 snprintf(connectpath, sizeof connectpath, ".:%s", dev->hook); 628 629 /* Configure node to 3Com mode if needed */ 630 if (p->cfg.pppoe_configured) { 631 mode = p->cfg.nonstandard_pppoe ? NG_PPPOE_NONSTANDARD : NG_PPPOE_STANDARD; 632 if (NgSendMsg(dev->cs, connectpath, NGM_PPPOE_COOKIE, 633 NGM_PPPOE_SETMODE, mode, strlen(mode) + 1) == -1) { 634 log_Printf(LogWARN, "``%s'': Cannot configure netgraph node: %s\n", 635 connectpath, strerror(errno)); 636 return ether_Abandon(dev, p); 637 } 638 } 639 640 /* And finally, request a connection to the given provider */ 641 642 data = (struct ngpppoe_init_data *)alloca(sizeof *data + providerlen); 643 snprintf(data->hook, sizeof data->hook, "%s", dev->hook); 644 memcpy(data->data, provider, providerlen); 645 data->data_len = providerlen; 646 647 log_Printf(LogDEBUG, "Sending PPPOE_CONNECT to %s\n", connectpath); 648 if (NgSendMsg(dev->cs, connectpath, NGM_PPPOE_COOKIE, 649 NGM_PPPOE_CONNECT, data, sizeof *data + providerlen) == -1) { 650 log_Printf(LogWARN, "``%s'': Cannot start netgraph node: %s\n", 651 connectpath, strerror(errno)); 652 return ether_Abandon(dev, p); 653 } 654 655 /* Hook things up so that we monitor dev->cs */ 656 p->desc.UpdateSet = ether_UpdateSet; 657 p->desc.IsSet = ether_IsSet; 658 p->desc.Read = ether_DescriptorRead; 659 660 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 661 switch (p->cfg.cd.necessity) { 662 case CD_VARIABLE: 663 dev->dev.cd.delay = p->cfg.cd.delay; 664 break; 665 case CD_REQUIRED: 666 dev->dev.cd = p->cfg.cd; 667 break; 668 case CD_NOTREQUIRED: 669 log_Printf(LogWARN, "%s: Carrier must be set, using ``set cd %d!''\n", 670 p->link.name, dev->dev.cd.delay); 671 case CD_DEFAULT: 672 break; 673 } 674 675 dev->timeout = dev->dev.cd.delay; 676 dev->connected = CARRIER_PENDING; 677 /* This will be overridden by our session id - if provided by netgraph */ 678 dev->slot = GetIfIndex(path); 679 } else { 680 /* See if we're a netgraph socket */ 681 struct stat st; 682 683 if (fstat(p->fd, &st) != -1 && (st.st_mode & S_IFSOCK)) { 684 struct sockaddr_storage ssock; 685 struct sockaddr *sock = (struct sockaddr *)&ssock; 686 int sz; 687 688 sz = sizeof ssock; 689 if (getsockname(p->fd, sock, &sz) == -1) { 690 log_Printf(LogPHASE, "%s: Link is a closed socket !\n", p->link.name); 691 close(p->fd); 692 p->fd = -1; 693 return NULL; 694 } 695 696 if (sock->sa_family == AF_NETGRAPH) { 697 /* 698 * It's a netgraph node... We can't determine hook names etc, so we 699 * stay pretty impartial.... 700 */ 701 log_Printf(LogPHASE, "%s: Link is a netgraph node\n", p->link.name); 702 703 if ((dev = malloc(sizeof *dev)) == NULL) { 704 log_Printf(LogWARN, "%s: Cannot allocate an ether device: %s\n", 705 p->link.name, strerror(errno)); 706 return NULL; 707 } 708 709 memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 710 dev->cs = -1; 711 dev->timeout = 0; 712 dev->connected = CARRIER_OK; 713 *dev->hook = '\0'; 714 715 /* 716 * If we're being envoked from pppoed(8), we may have a SESSIONID 717 * set in the environment. If so, use it as the slot 718 */ 719 if ((sessionid = getenv("SESSIONID")) != NULL) { 720 char *end; 721 u_long slot; 722 723 slot = strtoul(sessionid, &end, 16); 724 dev->slot = end != sessionid && *end == '\0' ? slot : 0; 725 } else 726 dev->slot = 0; 727 } 728 } 729 } 730 731 if (dev) { 732 physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 733 return &dev->dev; 734 } 735 736 return NULL; 737 } 738