1 /*- 2 * Copyright (c) 1998 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: src/usr.sbin/ppp/iface.c,v 1.13.2.9 2003/04/29 16:04:41 ume Exp $ 27 * $DragonFly: src/usr.sbin/ppp/iface.c,v 1.3 2004/02/03 07:11:47 dillon Exp $ 28 */ 29 30 #include <sys/param.h> 31 #include <sys/socket.h> 32 #include <netinet/in.h> 33 #include <net/if.h> 34 #include <net/if_dl.h> 35 #ifdef __DragonFly__ 36 #include <net/if_var.h> 37 #endif 38 #include <net/route.h> 39 #include <netinet/in_systm.h> 40 #include <netinet/in_var.h> 41 #include <netinet/ip.h> 42 #ifndef NOINET6 43 #include <netinet6/nd6.h> 44 #endif 45 #include <sys/un.h> 46 47 #include <errno.h> 48 #include <string.h> 49 #include <stdarg.h> 50 #include <stdio.h> 51 #include <stdlib.h> 52 #include <sys/ioctl.h> 53 #include <sys/sysctl.h> 54 #include <termios.h> 55 #include <unistd.h> 56 57 #include "layer.h" 58 #include "defs.h" 59 #include "command.h" 60 #include "mbuf.h" 61 #include "log.h" 62 #include "id.h" 63 #include "timer.h" 64 #include "fsm.h" 65 #include "iplist.h" 66 #include "lqr.h" 67 #include "hdlc.h" 68 #include "throughput.h" 69 #include "slcompress.h" 70 #include "descriptor.h" 71 #include "ncpaddr.h" 72 #include "ipcp.h" 73 #include "filter.h" 74 #include "lcp.h" 75 #include "ccp.h" 76 #include "link.h" 77 #include "mp.h" 78 #ifndef NORADIUS 79 #include "radius.h" 80 #endif 81 #include "ipv6cp.h" 82 #include "ncp.h" 83 #include "bundle.h" 84 #include "prompt.h" 85 #include "iface.h" 86 87 #define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 88 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}} 89 static const struct in6_addr in6mask128 = IN6MASK128; 90 91 92 struct iface * 93 iface_Create(const char *name) 94 { 95 int mib[6], maxtries, err; 96 size_t needed, namelen; 97 char *buf, *ptr, *end; 98 struct if_msghdr *ifm; 99 struct ifa_msghdr *ifam; 100 struct sockaddr_dl *dl; 101 struct sockaddr *sa[RTAX_MAX]; 102 struct iface *iface; 103 struct iface_addr *addr; 104 105 mib[0] = CTL_NET; 106 mib[1] = PF_ROUTE; 107 mib[2] = 0; 108 mib[3] = 0; 109 mib[4] = NET_RT_IFLIST; 110 mib[5] = 0; 111 112 maxtries = 20; 113 err = 0; 114 do { 115 if (maxtries-- == 0 || (err && err != ENOMEM)) { 116 fprintf(stderr, "iface_Create: sysctl: %s\n", strerror(err)); 117 return NULL; 118 } 119 120 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 121 fprintf(stderr, "iface_Create: sysctl: estimate: %s\n", 122 strerror(errno)); 123 return NULL; 124 } 125 126 if ((buf = (char *)malloc(needed)) == NULL) { 127 fprintf(stderr, "iface_Create: malloc failed: %s\n", strerror(errno)); 128 return NULL; 129 } 130 131 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 132 err = errno; 133 free(buf); 134 buf = NULL; 135 } 136 } while (buf == NULL); 137 138 ptr = buf; 139 end = buf + needed; 140 iface = NULL; 141 namelen = strlen(name); 142 143 while (ptr < end && iface == NULL) { 144 ifm = (struct if_msghdr *)ptr; /* On if_msghdr */ 145 if (ifm->ifm_type != RTM_IFINFO) 146 break; 147 dl = (struct sockaddr_dl *)(ifm + 1); /* Single _dl at end */ 148 if (dl->sdl_nlen == namelen && !strncmp(name, dl->sdl_data, namelen)) { 149 iface = (struct iface *)malloc(sizeof *iface); 150 if (iface == NULL) { 151 fprintf(stderr, "iface_Create: malloc: %s\n", strerror(errno)); 152 return NULL; 153 } 154 iface->name = strdup(name); 155 iface->index = ifm->ifm_index; 156 iface->flags = ifm->ifm_flags; 157 iface->mtu = 0; 158 iface->addrs = 0; 159 iface->addr = NULL; 160 } 161 ptr += ifm->ifm_msglen; /* First ifa_msghdr */ 162 for (; ptr < end; ptr += ifam->ifam_msglen) { 163 ifam = (struct ifa_msghdr *)ptr; /* Next if address */ 164 165 if (ifam->ifam_type != RTM_NEWADDR) /* finished this if */ 166 break; 167 168 if (iface != NULL && ifam->ifam_addrs & RTA_IFA) { 169 /* Found a configured interface ! */ 170 iface_ParseHdr(ifam, sa); 171 172 if (sa[RTAX_IFA] && (sa[RTAX_IFA]->sa_family == AF_INET 173 #ifndef NOINET6 174 || sa[RTAX_IFA]->sa_family == AF_INET6 175 #endif 176 )) { 177 /* Record the address */ 178 179 addr = (struct iface_addr *) 180 realloc(iface->addr, (iface->addrs + 1) * sizeof iface->addr[0]); 181 if (addr == NULL) 182 break; 183 iface->addr = addr; 184 185 addr += iface->addrs; 186 iface->addrs++; 187 188 ncprange_setsa(&addr->ifa, sa[RTAX_IFA], sa[RTAX_NETMASK]); 189 if (sa[RTAX_BRD]) 190 ncpaddr_setsa(&addr->peer, sa[RTAX_BRD]); 191 else 192 ncpaddr_init(&addr->peer); 193 } 194 } 195 } 196 } 197 198 free(buf); 199 200 return iface; 201 } 202 203 static int 204 iface_addr_Zap(const char *name, struct iface_addr *addr, int s) 205 { 206 struct ifaliasreq ifra; 207 #ifndef NOINET6 208 struct in6_aliasreq ifra6; 209 #endif 210 struct sockaddr_in *me4, *msk4, *peer4; 211 struct sockaddr_storage ssme, sspeer, ssmsk; 212 int res; 213 214 ncprange_getsa(&addr->ifa, &ssme, &ssmsk); 215 ncpaddr_getsa(&addr->peer, &sspeer); 216 res = 0; 217 218 switch (ncprange_family(&addr->ifa)) { 219 case AF_INET: 220 memset(&ifra, '\0', sizeof ifra); 221 strncpy(ifra.ifra_name, name, sizeof ifra.ifra_name - 1); 222 223 me4 = (struct sockaddr_in *)&ifra.ifra_addr; 224 memcpy(me4, &ssme, sizeof *me4); 225 226 msk4 = (struct sockaddr_in *)&ifra.ifra_mask; 227 memcpy(msk4, &ssmsk, sizeof *msk4); 228 229 peer4 = (struct sockaddr_in *)&ifra.ifra_broadaddr; 230 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) { 231 peer4->sin_family = AF_INET; 232 peer4->sin_len = sizeof(*peer4); 233 peer4->sin_addr.s_addr = INADDR_NONE; 234 } else 235 memcpy(peer4, &sspeer, sizeof *peer4); 236 237 res = ID0ioctl(s, SIOCDIFADDR, &ifra); 238 if (log_IsKept(LogDEBUG)) { 239 char buf[100]; 240 241 snprintf(buf, sizeof buf, "%s", ncprange_ntoa(&addr->ifa)); 242 log_Printf(LogWARN, "%s: DIFADDR %s -> %s returns %d\n", 243 ifra.ifra_name, buf, ncpaddr_ntoa(&addr->peer), res); 244 } 245 break; 246 247 #ifndef NOINET6 248 case AF_INET6: 249 memset(&ifra6, '\0', sizeof ifra6); 250 strncpy(ifra6.ifra_name, name, sizeof ifra6.ifra_name - 1); 251 252 memcpy(&ifra6.ifra_addr, &ssme, sizeof ifra6.ifra_addr); 253 memcpy(&ifra6.ifra_prefixmask, &ssmsk, sizeof ifra6.ifra_prefixmask); 254 ifra6.ifra_prefixmask.sin6_family = AF_UNSPEC; 255 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 256 ifra6.ifra_dstaddr.sin6_family = AF_UNSPEC; 257 else 258 memcpy(&ifra6.ifra_dstaddr, &sspeer, sizeof ifra6.ifra_dstaddr); 259 ifra6.ifra_lifetime.ia6t_vltime = ND6_INFINITE_LIFETIME; 260 ifra6.ifra_lifetime.ia6t_pltime = ND6_INFINITE_LIFETIME; 261 262 res = ID0ioctl(s, SIOCDIFADDR_IN6, &ifra6); 263 break; 264 #endif 265 } 266 267 if (res == -1) { 268 char dst[40]; 269 const char *end = 270 #ifndef NOINET6 271 ncprange_family(&addr->ifa) == AF_INET6 ? "_IN6" : 272 #endif 273 ""; 274 275 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 276 log_Printf(LogWARN, "iface rm: ioctl(SIOCDIFADDR%s, %s): %s\n", 277 end, ncprange_ntoa(&addr->ifa), strerror(errno)); 278 else { 279 snprintf(dst, sizeof dst, "%s", ncpaddr_ntoa(&addr->peer)); 280 log_Printf(LogWARN, "iface rm: ioctl(SIOCDIFADDR%s, %s -> %s): %s\n", 281 end, ncprange_ntoa(&addr->ifa), dst, strerror(errno)); 282 } 283 } 284 285 return res != -1; 286 } 287 288 static int 289 iface_addr_Add(const char *name, struct iface_addr *addr, int s) 290 { 291 struct ifaliasreq ifra; 292 #ifndef NOINET6 293 struct in6_aliasreq ifra6; 294 #endif 295 struct sockaddr_in *me4, *msk4, *peer4; 296 struct sockaddr_storage ssme, sspeer, ssmsk; 297 int res; 298 299 ncprange_getsa(&addr->ifa, &ssme, &ssmsk); 300 ncpaddr_getsa(&addr->peer, &sspeer); 301 res = 0; 302 303 switch (ncprange_family(&addr->ifa)) { 304 case AF_INET: 305 memset(&ifra, '\0', sizeof ifra); 306 strncpy(ifra.ifra_name, name, sizeof ifra.ifra_name - 1); 307 308 me4 = (struct sockaddr_in *)&ifra.ifra_addr; 309 memcpy(me4, &ssme, sizeof *me4); 310 311 msk4 = (struct sockaddr_in *)&ifra.ifra_mask; 312 memcpy(msk4, &ssmsk, sizeof *msk4); 313 314 peer4 = (struct sockaddr_in *)&ifra.ifra_broadaddr; 315 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) { 316 peer4->sin_family = AF_INET; 317 peer4->sin_len = sizeof(*peer4); 318 peer4->sin_addr.s_addr = INADDR_NONE; 319 } else 320 memcpy(peer4, &sspeer, sizeof *peer4); 321 322 res = ID0ioctl(s, SIOCAIFADDR, &ifra); 323 if (log_IsKept(LogDEBUG)) { 324 char buf[100]; 325 326 snprintf(buf, sizeof buf, "%s", ncprange_ntoa(&addr->ifa)); 327 log_Printf(LogWARN, "%s: AIFADDR %s -> %s returns %d\n", 328 ifra.ifra_name, buf, ncpaddr_ntoa(&addr->peer), res); 329 } 330 break; 331 332 #ifndef NOINET6 333 case AF_INET6: 334 memset(&ifra6, '\0', sizeof ifra6); 335 strncpy(ifra6.ifra_name, name, sizeof ifra6.ifra_name - 1); 336 337 memcpy(&ifra6.ifra_addr, &ssme, sizeof ifra6.ifra_addr); 338 memcpy(&ifra6.ifra_prefixmask, &ssmsk, sizeof ifra6.ifra_prefixmask); 339 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 340 ifra6.ifra_dstaddr.sin6_family = AF_UNSPEC; 341 else if (memcmp(&((struct sockaddr_in6 *)&ssmsk)->sin6_addr, &in6mask128, 342 sizeof in6mask128) == 0) 343 memcpy(&ifra6.ifra_dstaddr, &sspeer, sizeof ifra6.ifra_dstaddr); 344 ifra6.ifra_lifetime.ia6t_vltime = ND6_INFINITE_LIFETIME; 345 ifra6.ifra_lifetime.ia6t_pltime = ND6_INFINITE_LIFETIME; 346 347 res = ID0ioctl(s, SIOCAIFADDR_IN6, &ifra6); 348 break; 349 #endif 350 } 351 352 if (res == -1) { 353 char dst[40]; 354 const char *end = 355 #ifndef NOINET6 356 ncprange_family(&addr->ifa) == AF_INET6 ? "_IN6" : 357 #endif 358 ""; 359 360 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 361 log_Printf(LogWARN, "iface add: ioctl(SIOCAIFADDR%s, %s): %s\n", 362 end, ncprange_ntoa(&addr->ifa), strerror(errno)); 363 else { 364 snprintf(dst, sizeof dst, "%s", ncpaddr_ntoa(&addr->peer)); 365 log_Printf(LogWARN, "iface add: ioctl(SIOCAIFADDR%s, %s -> %s): %s\n", 366 end, ncprange_ntoa(&addr->ifa), dst, strerror(errno)); 367 } 368 } 369 370 return res != -1; 371 } 372 373 374 void 375 iface_Clear(struct iface *iface, struct ncp *ncp, int family, int how) 376 { 377 int addrs, af, inskip, in6skip, s4 = -1, s6 = -1, *s; 378 unsigned n; 379 380 if (iface->addrs) { 381 inskip = in6skip = how == IFACE_CLEAR_ALL ? 0 : 1; 382 addrs = 0; 383 384 for (n = 0; n < iface->addrs; n++) { 385 af = ncprange_family(&iface->addr[n].ifa); 386 if (family == 0 || family == af) { 387 if (!iface->addr[n].system && (how & IFACE_SYSTEM)) 388 continue; 389 switch (af) { 390 case AF_INET: 391 if (inskip) { 392 inskip = 0; 393 continue; 394 } 395 s = &s4; 396 break; 397 398 #ifndef NOINET6 399 case AF_INET6: 400 if (in6skip) { 401 in6skip = 0; 402 continue; 403 } 404 s = &s6; 405 break; 406 #endif 407 default: 408 continue; 409 } 410 411 if (*s == -1 && (*s = ID0socket(af, SOCK_DGRAM, 0)) == -1) 412 log_Printf(LogERROR, "iface_Clear: socket(): %s\n", strerror(errno)); 413 else if (iface_addr_Zap(iface->name, iface->addr + n, *s)) { 414 ncp_IfaceAddrDeleted(ncp, iface->addr + n); 415 bcopy(iface->addr + n + 1, iface->addr + n, 416 (iface->addrs - n - 1) * sizeof *iface->addr); 417 iface->addrs--; 418 n--; 419 } 420 } 421 } 422 423 /* Don't bother realloc()ing - we have little to gain */ 424 425 if (s4) 426 close(s4); 427 if (s6) 428 close(s6); 429 } 430 } 431 432 int 433 iface_Add(struct iface *iface, struct ncp *ncp, const struct ncprange *ifa, 434 const struct ncpaddr *peer, int how) 435 { 436 int af, removed, s; 437 unsigned n; 438 struct ncpaddr ncplocal; 439 struct iface_addr *addr, newaddr; 440 441 af = ncprange_family(ifa); 442 if ((s = ID0socket(af, SOCK_DGRAM, 0)) == -1) { 443 log_Printf(LogERROR, "iface_Add: socket(): %s\n", strerror(errno)); 444 return 0; 445 } 446 ncprange_getaddr(ifa, &ncplocal); 447 448 for (n = 0; n < iface->addrs; n++) { 449 if (ncprange_contains(&iface->addr[n].ifa, &ncplocal) || 450 ncpaddr_equal(&iface->addr[n].peer, peer)) { 451 /* Replace this sockaddr */ 452 if (!(how & IFACE_FORCE_ADD)) { 453 close(s); 454 return 0; /* errno = EEXIST; */ 455 } 456 457 if (ncprange_equal(&iface->addr[n].ifa, ifa) && 458 ncpaddr_equal(&iface->addr[n].peer, peer)) { 459 close(s); 460 return 1; /* Already there */ 461 } 462 463 removed = iface_addr_Zap(iface->name, iface->addr + n, s); 464 if (removed) 465 ncp_IfaceAddrDeleted(ncp, iface->addr + n); 466 ncprange_copy(&iface->addr[n].ifa, ifa); 467 ncpaddr_copy(&iface->addr[n].peer, peer); 468 if (!iface_addr_Add(iface->name, iface->addr + n, s)) { 469 if (removed) { 470 bcopy(iface->addr + n + 1, iface->addr + n, 471 (iface->addrs - n - 1) * sizeof *iface->addr); 472 iface->addrs--; 473 n--; 474 } 475 close(s); 476 return 0; 477 } 478 close(s); 479 ncp_IfaceAddrAdded(ncp, iface->addr + n); 480 return 1; 481 } 482 } 483 484 addr = (struct iface_addr *)realloc 485 (iface->addr, (iface->addrs + 1) * sizeof iface->addr[0]); 486 if (addr == NULL) { 487 log_Printf(LogERROR, "iface_inAdd: realloc: %s\n", strerror(errno)); 488 close(s); 489 return 0; 490 } 491 iface->addr = addr; 492 493 ncprange_copy(&newaddr.ifa, ifa); 494 ncpaddr_copy(&newaddr.peer, peer); 495 newaddr.system = !!(how & IFACE_SYSTEM); 496 if (!iface_addr_Add(iface->name, &newaddr, s)) { 497 close(s); 498 return 0; 499 } 500 501 if (how & IFACE_ADD_FIRST) { 502 /* Stuff it at the start of our list */ 503 n = 0; 504 bcopy(iface->addr, iface->addr + 1, iface->addrs * sizeof *iface->addr); 505 } else 506 n = iface->addrs; 507 508 iface->addrs++; 509 memcpy(iface->addr + n, &newaddr, sizeof(*iface->addr)); 510 511 close(s); 512 ncp_IfaceAddrAdded(ncp, iface->addr + n); 513 514 return 1; 515 } 516 517 int 518 iface_Delete(struct iface *iface, struct ncp *ncp, const struct ncpaddr *del) 519 { 520 struct ncpaddr found; 521 unsigned n; 522 int res, s; 523 524 if ((s = ID0socket(ncpaddr_family(del), SOCK_DGRAM, 0)) == -1) { 525 log_Printf(LogERROR, "iface_Delete: socket(): %s\n", strerror(errno)); 526 return 0; 527 } 528 529 for (n = res = 0; n < iface->addrs; n++) { 530 ncprange_getaddr(&iface->addr[n].ifa, &found); 531 if (ncpaddr_equal(&found, del)) { 532 if (iface_addr_Zap(iface->name, iface->addr + n, s)) { 533 ncp_IfaceAddrDeleted(ncp, iface->addr + n); 534 bcopy(iface->addr + n + 1, iface->addr + n, 535 (iface->addrs - n - 1) * sizeof *iface->addr); 536 iface->addrs--; 537 res = 1; 538 } 539 break; 540 } 541 } 542 543 close(s); 544 545 return res; 546 } 547 548 #define IFACE_ADDFLAGS 1 549 #define IFACE_DELFLAGS 2 550 551 static int 552 iface_ChangeFlags(const char *ifname, int flags, int how) 553 { 554 struct ifreq ifrq; 555 int s; 556 557 s = ID0socket(PF_INET, SOCK_DGRAM, 0); 558 if (s < 0) { 559 log_Printf(LogERROR, "iface_ChangeFlags: socket: %s\n", strerror(errno)); 560 return 0; 561 } 562 563 memset(&ifrq, '\0', sizeof ifrq); 564 strncpy(ifrq.ifr_name, ifname, sizeof ifrq.ifr_name - 1); 565 ifrq.ifr_name[sizeof ifrq.ifr_name - 1] = '\0'; 566 if (ID0ioctl(s, SIOCGIFFLAGS, &ifrq) < 0) { 567 log_Printf(LogERROR, "iface_ChangeFlags: ioctl(SIOCGIFFLAGS): %s\n", 568 strerror(errno)); 569 close(s); 570 return 0; 571 } 572 573 if (how == IFACE_ADDFLAGS) 574 ifrq.ifr_flags |= flags; 575 else 576 ifrq.ifr_flags &= ~flags; 577 578 if (ID0ioctl(s, SIOCSIFFLAGS, &ifrq) < 0) { 579 log_Printf(LogERROR, "iface_ChangeFlags: ioctl(SIOCSIFFLAGS): %s\n", 580 strerror(errno)); 581 close(s); 582 return 0; 583 } 584 close(s); 585 586 return 1; /* Success */ 587 } 588 589 int 590 iface_SetFlags(const char *ifname, int flags) 591 { 592 return iface_ChangeFlags(ifname, flags, IFACE_ADDFLAGS); 593 } 594 595 int 596 iface_ClearFlags(const char *ifname, int flags) 597 { 598 return iface_ChangeFlags(ifname, flags, IFACE_DELFLAGS); 599 } 600 601 void 602 iface_Destroy(struct iface *iface) 603 { 604 /* 605 * iface_Clear(iface, IFACE_CLEAR_ALL) must be called manually 606 * if that's what the user wants. It's better to leave the interface 607 * allocated so that existing connections can continue to work. 608 */ 609 610 if (iface != NULL) { 611 free(iface->name); 612 free(iface->addr); 613 free(iface); 614 } 615 } 616 617 #define if_entry(x) { IFF_##x, #x } 618 619 struct { 620 int flag; 621 const char *value; 622 } if_flags[] = { 623 if_entry(UP), 624 if_entry(BROADCAST), 625 if_entry(DEBUG), 626 if_entry(LOOPBACK), 627 if_entry(POINTOPOINT), 628 if_entry(RUNNING), 629 if_entry(NOARP), 630 if_entry(PROMISC), 631 if_entry(ALLMULTI), 632 if_entry(OACTIVE), 633 if_entry(SIMPLEX), 634 if_entry(LINK0), 635 if_entry(LINK1), 636 if_entry(LINK2), 637 if_entry(MULTICAST), 638 { 0, "???" } 639 }; 640 641 int 642 iface_Show(struct cmdargs const *arg) 643 { 644 struct ncpaddr ncpaddr; 645 struct iface *iface = arg->bundle->iface, *current; 646 unsigned f; 647 int flags; 648 #ifndef NOINET6 649 int scopeid, width; 650 #endif 651 struct in_addr mask; 652 653 current = iface_Create(iface->name); 654 flags = iface->flags = current->flags; 655 iface_Destroy(current); 656 657 prompt_Printf(arg->prompt, "%s (idx %d) <", iface->name, iface->index); 658 for (f = 0; f < sizeof if_flags / sizeof if_flags[0]; f++) 659 if ((if_flags[f].flag & flags)) { 660 prompt_Printf(arg->prompt, "%s%s", flags == iface->flags ? "" : ",", 661 if_flags[f].value); 662 flags &= ~if_flags[f].flag; 663 } 664 665 #if 0 666 if (flags) 667 prompt_Printf(arg->prompt, "%s0x%x", flags == iface->flags ? "" : ",", 668 flags); 669 #endif 670 671 prompt_Printf(arg->prompt, "> mtu %lu has %d address%s:\n", iface->mtu, 672 iface->addrs, iface->addrs == 1 ? "" : "es"); 673 674 for (f = 0; f < iface->addrs; f++) { 675 ncprange_getaddr(&iface->addr[f].ifa, &ncpaddr); 676 switch (ncprange_family(&iface->addr[f].ifa)) { 677 case AF_INET: 678 prompt_Printf(arg->prompt, " inet %s --> ", ncpaddr_ntoa(&ncpaddr)); 679 if (ncpaddr_family(&iface->addr[f].peer) == AF_UNSPEC) 680 prompt_Printf(arg->prompt, "255.255.255.255"); 681 else 682 prompt_Printf(arg->prompt, "%s", ncpaddr_ntoa(&iface->addr[f].peer)); 683 ncprange_getip4mask(&iface->addr[f].ifa, &mask); 684 prompt_Printf(arg->prompt, " netmask 0x%08lx", (long)ntohl(mask.s_addr)); 685 break; 686 687 #ifndef NOINET6 688 case AF_INET6: 689 prompt_Printf(arg->prompt, " inet6 %s", ncpaddr_ntoa(&ncpaddr)); 690 if (ncpaddr_family(&iface->addr[f].peer) != AF_UNSPEC) 691 prompt_Printf(arg->prompt, " --> %s", 692 ncpaddr_ntoa(&iface->addr[f].peer)); 693 ncprange_getwidth(&iface->addr[f].ifa, &width); 694 if (ncpaddr_family(&iface->addr[f].peer) == AF_UNSPEC) 695 prompt_Printf(arg->prompt, " prefixlen %d", width); 696 if ((scopeid = ncprange_scopeid(&iface->addr[f].ifa)) != -1) 697 prompt_Printf(arg->prompt, " scopeid 0x%x", (unsigned)scopeid); 698 break; 699 #endif 700 } 701 prompt_Printf(arg->prompt, "\n"); 702 } 703 704 return 0; 705 } 706 707 void 708 iface_ParseHdr(struct ifa_msghdr *ifam, struct sockaddr *sa[RTAX_MAX]) 709 { 710 char *wp; 711 int rtax; 712 713 wp = (char *)(ifam + 1); 714 715 for (rtax = 0; rtax < RTAX_MAX; rtax++) 716 if (ifam->ifam_addrs & (1 << rtax)) { 717 sa[rtax] = (struct sockaddr *)wp; 718 wp += ROUNDUP(sa[rtax]->sa_len); 719 } else 720 sa[rtax] = NULL; 721 } 722