iface.c revision 81922
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: head/usr.sbin/ppp/iface.c 81922 2001-08-19 22:23:22Z brian $ 27 */ 28 29#include <sys/param.h> 30#include <sys/socket.h> 31#include <netinet/in.h> 32#include <net/if.h> 33#include <net/if_dl.h> 34#include <net/if_var.h> 35#include <net/route.h> 36#include <arpa/inet.h> 37#include <netinet/in_systm.h> 38#include <netinet/in_var.h> 39#include <netinet/ip.h> 40#ifndef NOINET6 41#include <netinet6/nd6.h> 42#endif 43#include <sys/un.h> 44 45#include <errno.h> 46#include <string.h> 47#include <stdio.h> 48#include <stdlib.h> 49#include <sys/ioctl.h> 50#include <sys/sysctl.h> 51#include <termios.h> 52#include <unistd.h> 53 54#include "layer.h" 55#include "defs.h" 56#include "command.h" 57#include "mbuf.h" 58#include "log.h" 59#include "id.h" 60#include "timer.h" 61#include "fsm.h" 62#include "iplist.h" 63#include "lqr.h" 64#include "hdlc.h" 65#include "throughput.h" 66#include "slcompress.h" 67#include "descriptor.h" 68#include "ncpaddr.h" 69#include "ip.h" 70#include "ipcp.h" 71#include "filter.h" 72#include "lcp.h" 73#include "ccp.h" 74#include "link.h" 75#include "mp.h" 76#ifndef NORADIUS 77#include "radius.h" 78#endif 79#include "ipv6cp.h" 80#include "ncp.h" 81#include "bundle.h" 82#include "prompt.h" 83#include "iface.h" 84 85 86struct iface * 87iface_Create(const char *name) 88{ 89 int mib[6], maxtries, err; 90 size_t needed, namelen; 91 char *buf, *ptr, *end; 92 struct if_msghdr *ifm; 93 struct ifa_msghdr *ifam; 94 struct sockaddr_dl *dl; 95 struct sockaddr *sa[RTAX_MAX]; 96 struct iface *iface; 97 struct iface_addr *addr; 98 99 mib[0] = CTL_NET; 100 mib[1] = PF_ROUTE; 101 mib[2] = 0; 102 mib[3] = 0; 103 mib[4] = NET_RT_IFLIST; 104 mib[5] = 0; 105 106 maxtries = 20; 107 err = 0; 108 do { 109 if (maxtries-- == 0 || (err && err != ENOMEM)) { 110 fprintf(stderr, "iface_Create: sysctl: %s\n", strerror(err)); 111 return NULL; 112 } 113 114 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 115 fprintf(stderr, "iface_Create: sysctl: estimate: %s\n", 116 strerror(errno)); 117 return NULL; 118 } 119 120 if ((buf = (char *)malloc(needed)) == NULL) { 121 fprintf(stderr, "iface_Create: malloc failed: %s\n", strerror(errno)); 122 return NULL; 123 } 124 125 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 126 err = errno; 127 free(buf); 128 buf = NULL; 129 } 130 } while (buf == NULL); 131 132 ptr = buf; 133 end = buf + needed; 134 iface = NULL; 135 namelen = strlen(name); 136 137 while (ptr < end && iface == NULL) { 138 ifm = (struct if_msghdr *)ptr; /* On if_msghdr */ 139 if (ifm->ifm_type != RTM_IFINFO) 140 break; 141 dl = (struct sockaddr_dl *)(ifm + 1); /* Single _dl at end */ 142 if (dl->sdl_nlen == namelen && !strncmp(name, dl->sdl_data, namelen)) { 143 iface = (struct iface *)malloc(sizeof *iface); 144 if (iface == NULL) { 145 fprintf(stderr, "iface_Create: malloc: %s\n", strerror(errno)); 146 return NULL; 147 } 148 iface->name = strdup(name); 149 iface->index = ifm->ifm_index; 150 iface->flags = ifm->ifm_flags; 151 iface->mtu = 0; 152 iface->addrs = 0; 153 iface->addr = NULL; 154 } 155 ptr += ifm->ifm_msglen; /* First ifa_msghdr */ 156 for (; ptr < end; ptr += ifam->ifam_msglen) { 157 ifam = (struct ifa_msghdr *)ptr; /* Next if address */ 158 159 if (ifam->ifam_type != RTM_NEWADDR) /* finished this if */ 160 break; 161 162 if (iface != NULL && ifam->ifam_addrs & RTA_IFA) { 163 /* Found a configured interface ! */ 164 iface_ParseHdr(ifam, sa); 165 166 if (sa[RTAX_IFA] && (sa[RTAX_IFA]->sa_family == AF_INET 167#ifndef NOINET6 168 || sa[RTAX_IFA]->sa_family == AF_INET6 169#endif 170 )) { 171 /* Record the address */ 172 173 addr = (struct iface_addr *) 174 realloc(iface->addr, (iface->addrs + 1) * sizeof iface->addr[0]); 175 if (addr == NULL) 176 break; 177 iface->addr = addr; 178 179 addr += iface->addrs; 180 iface->addrs++; 181 182 ncprange_setsa(&addr->ifa, sa[RTAX_IFA], sa[RTAX_NETMASK]); 183 if (sa[RTAX_BRD]) 184 ncpaddr_setsa(&addr->peer, sa[RTAX_BRD]); 185 else 186 ncpaddr_init(&addr->peer); 187 } 188 } 189 } 190 } 191 192 free(buf); 193 194 return iface; 195} 196 197static int 198iface_addr_Zap(const char *name, struct iface_addr *addr, int s) 199{ 200 struct ifaliasreq ifra; 201#ifndef NOINET6 202 struct in6_aliasreq ifra6; 203#endif 204 struct sockaddr_in *me4, *msk4, *peer4; 205 struct sockaddr_storage ssme, sspeer, ssmsk; 206 int res; 207 208 ncprange_getsa(&addr->ifa, &ssme, &ssmsk); 209 ncpaddr_getsa(&addr->peer, &sspeer); 210 res = 0; 211 212 switch (ncprange_family(&addr->ifa)) { 213 case AF_INET: 214 memset(&ifra, '\0', sizeof ifra); 215 strncpy(ifra.ifra_name, name, sizeof ifra.ifra_name - 1); 216 217 me4 = (struct sockaddr_in *)&ifra.ifra_addr; 218 memcpy(me4, &ssme, sizeof *me4); 219 220 msk4 = (struct sockaddr_in *)&ifra.ifra_mask; 221 memcpy(msk4, &ssmsk, sizeof *msk4); 222 223 peer4 = (struct sockaddr_in *)&ifra.ifra_broadaddr; 224 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) { 225 peer4->sin_family = AF_INET; 226 peer4->sin_len = sizeof(*peer4); 227 peer4->sin_addr.s_addr = INADDR_NONE; 228 } else 229 memcpy(peer4, &sspeer, sizeof *peer4); 230 231 res = ID0ioctl(s, SIOCDIFADDR, &ifra); 232 break; 233 234#ifndef NOINET6 235 case AF_INET6: 236 memset(&ifra6, '\0', sizeof ifra6); 237 strncpy(ifra6.ifra_name, name, sizeof ifra6.ifra_name - 1); 238 239 memcpy(&ifra6.ifra_addr, &ssme, sizeof ifra6.ifra_addr); 240 memcpy(&ifra6.ifra_prefixmask, &ssmsk, sizeof ifra6.ifra_prefixmask); 241 ifra6.ifra_prefixmask.sin6_family = AF_UNSPEC; 242 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 243 ifra6.ifra_dstaddr.sin6_family = AF_UNSPEC; 244 else 245 memcpy(&ifra6.ifra_dstaddr, &sspeer, sizeof ifra6.ifra_dstaddr); 246 ifra6.ifra_lifetime.ia6t_vltime = ND6_INFINITE_LIFETIME; 247 ifra6.ifra_lifetime.ia6t_pltime = ND6_INFINITE_LIFETIME; 248 249 res = ID0ioctl(s, SIOCDIFADDR_IN6, &ifra6); 250 break; 251#endif 252 } 253 254 if (res == -1) { 255 char dst[40]; 256 const char *end = 257#ifndef NOINET6 258 ncprange_family(&addr->ifa) == AF_INET6 ? "_IN6" : 259#endif 260 ""; 261 262 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 263 log_Printf(LogWARN, "iface rm: ioctl(SIOCDIFADDR%s, %s): %s\n", 264 end, ncprange_ntoa(&addr->ifa), strerror(errno)); 265 else { 266 snprintf(dst, sizeof dst, "%s", ncpaddr_ntoa(&addr->peer)); 267 log_Printf(LogWARN, "iface rm: ioctl(SIOCDIFADDR%s, %s -> %s): %s\n", 268 end, ncprange_ntoa(&addr->ifa), dst, strerror(errno)); 269 } 270 } 271 272 return res != -1; 273} 274 275static void 276iface_addr_Add(const char *name, struct iface_addr *addr, int s) 277{ 278 struct ifaliasreq ifra; 279#ifndef NOINET6 280 struct in6_aliasreq ifra6; 281#endif 282 struct sockaddr_in *me4, *msk4, *peer4; 283 struct sockaddr_storage ssme, sspeer, ssmsk; 284 int res; 285 286 ncprange_getsa(&addr->ifa, &ssme, &ssmsk); 287 ncpaddr_getsa(&addr->peer, &sspeer); 288 res = 0; 289 290 switch (ncprange_family(&addr->ifa)) { 291 case AF_INET: 292 memset(&ifra, '\0', sizeof ifra); 293 strncpy(ifra.ifra_name, name, sizeof ifra.ifra_name - 1); 294 295 me4 = (struct sockaddr_in *)&ifra.ifra_addr; 296 memcpy(me4, &ssme, sizeof *me4); 297 298 msk4 = (struct sockaddr_in *)&ifra.ifra_mask; 299 memcpy(msk4, &ssmsk, sizeof *msk4); 300 301 peer4 = (struct sockaddr_in *)&ifra.ifra_broadaddr; 302 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) { 303 peer4->sin_family = AF_INET; 304 peer4->sin_len = sizeof(*peer4); 305 peer4->sin_addr.s_addr = INADDR_NONE; 306 } else 307 memcpy(peer4, &sspeer, sizeof *peer4); 308 309 res = ID0ioctl(s, SIOCAIFADDR, &ifra); 310 break; 311 312#ifndef NOINET6 313 case AF_INET6: 314 memset(&ifra6, '\0', sizeof ifra6); 315 strncpy(ifra6.ifra_name, name, sizeof ifra6.ifra_name - 1); 316 317 memcpy(&ifra6.ifra_addr, &ssme, sizeof ifra6.ifra_addr); 318 memcpy(&ifra6.ifra_prefixmask, &ssmsk, sizeof ifra6.ifra_prefixmask); 319 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 320 ifra6.ifra_dstaddr.sin6_family = AF_UNSPEC; 321 else 322 memcpy(&ifra6.ifra_dstaddr, &sspeer, sizeof ifra6.ifra_dstaddr); 323 ifra6.ifra_lifetime.ia6t_vltime = ND6_INFINITE_LIFETIME; 324 ifra6.ifra_lifetime.ia6t_pltime = ND6_INFINITE_LIFETIME; 325 326 res = ID0ioctl(s, SIOCAIFADDR_IN6, &ifra6); 327 break; 328#endif 329 } 330 331 if (res == -1) { 332 char dst[40]; 333 const char *end = 334#ifndef NOINET6 335 ncprange_family(&addr->ifa) == AF_INET6 ? "_IN6" : 336#endif 337 ""; 338 339 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 340 log_Printf(LogWARN, "iface add: ioctl(SIOCAIFADDR%s, %s): %s\n", 341 end, ncprange_ntoa(&addr->ifa), strerror(errno)); 342 else { 343 snprintf(dst, sizeof dst, "%s", ncpaddr_ntoa(&addr->peer)); 344 log_Printf(LogWARN, "iface add: ioctl(SIOCDIFADDR%s, %s -> %s): %s\n", 345 end, ncprange_ntoa(&addr->ifa), dst, strerror(errno)); 346 } 347 } 348} 349 350 351void 352iface_Clear(struct iface *iface, struct ncp *ncp, int family, int how) 353{ 354 int addrs, af, inskip, in6skip, n, s4 = -1, s6 = -1, *s; 355 356 if (iface->addrs) { 357 inskip = in6skip = how == IFACE_CLEAR_ALL ? 0 : 1; 358 addrs = 0; 359 360 for (n = 0; n < iface->addrs; n++) { 361 af = ncprange_family(&iface->addr[n].ifa); 362 if (family == 0 || family == af) { 363 if (!iface->addr[n].system && (how & IFACE_SYSTEM)) 364 continue; 365 switch (af) { 366 case AF_INET: 367 if (inskip) { 368 inskip = 0; 369 continue; 370 } 371 s = &s4; 372 break; 373 374#ifndef NOINET6 375 case AF_INET6: 376 if (in6skip) { 377 in6skip = 0; 378 continue; 379 } 380 s = &s6; 381 break; 382#endif 383 default: 384 continue; 385 } 386 387 if (*s == -1 && (*s = ID0socket(af, SOCK_DGRAM, 0)) == -1) 388 log_Printf(LogERROR, "iface_Clear: socket(): %s\n", strerror(errno)); 389 else if (iface_addr_Zap(iface->name, iface->addr + n, *s)) { 390 ncp_IfaceAddrDeleted(ncp, iface->addr + n); 391 bcopy(iface->addr + n + 1, iface->addr + n, 392 (iface->addrs - n - 1) * sizeof *iface->addr); 393 iface->addrs--; 394 n--; 395 } 396 } 397 } 398 399 /* Don't bother realloc()ing - we have little to gain */ 400 401 if (s4) 402 close(s4); 403 if (s6) 404 close(s6); 405 } 406} 407 408int 409iface_Add(struct iface *iface, struct ncp *ncp, const struct ncprange *ifa, 410 const struct ncpaddr *peer, int how) 411{ 412 int af, n, s, width; 413 struct ncpaddr ifaddr, ncplocal; 414 struct iface_addr *addr; 415 416 af = ncprange_family(ifa); 417 if ((s = ID0socket(af, SOCK_DGRAM, 0)) == -1) { 418 log_Printf(LogERROR, "iface_Add: socket(): %s\n", strerror(errno)); 419 return 0; 420 } 421 ncprange_getaddr(ifa, &ncplocal); 422 423 for (n = 0; n < iface->addrs; n++) { 424 if (ncprange_contains(&iface->addr[n].ifa, &ncplocal)) { 425 if (!(how & IFACE_FORCE_ADD)) { 426 close(s); 427 return 0; /* errno = EEXIST; */ 428 } 429 430 if (ncprange_equal(&iface->addr[n].ifa, ifa) && 431 ncpaddr_equal(&iface->addr[n].peer, peer)) { 432 close(s); 433 return 1; /* Already there */ 434 } 435 436 width = 437#ifndef NOINET6 438 (af == AF_INET6) ? 128 : 439#endif 440 32; 441 iface_addr_Zap(iface->name, iface->addr + n, s); 442 ncprange_setwidth(&iface->addr[n].ifa, width); 443 ncprange_getaddr(&iface->addr[n].ifa, &ifaddr); 444 if (ncpaddr_equal(&ifaddr, &ncplocal)) 445 ncpaddr_copy(&iface->addr[n].peer, peer); 446 else 447 ncpaddr_init(&iface->addr[n].peer); 448 iface_addr_Add(iface->name, iface->addr + n, s); 449 if (ncpaddr_equal(&ifaddr, &ncplocal)) { 450 close(s); 451 ncp_IfaceAddrAdded(ncp, iface->addr + n); 452 return 1; 453 } 454 } 455 } 456 457 addr = (struct iface_addr *)realloc 458 (iface->addr, (iface->addrs + 1) * sizeof iface->addr[0]); 459 if (addr == NULL) { 460 log_Printf(LogERROR, "iface_inAdd: realloc: %s\n", strerror(errno)); 461 close(s); 462 return 0; 463 } 464 iface->addr = addr; 465 466 if (how & IFACE_ADD_FIRST) { 467 /* Stuff it at the start of our list */ 468 n = 0; 469 bcopy(iface->addr, iface->addr + 1, iface->addrs * sizeof *iface->addr); 470 } else 471 n = iface->addrs; 472 473 iface->addrs++; 474 ncprange_copy(&iface->addr[n].ifa, ifa); 475 ncpaddr_copy(&iface->addr[n].peer, peer); 476 iface->addr[n].system = !!(how & IFACE_SYSTEM); 477 iface_addr_Add(iface->name, iface->addr + n, s); 478 479 close(s); 480 ncp_IfaceAddrAdded(ncp, iface->addr + n); 481 482 return 1; 483} 484 485int 486iface_Delete(struct iface *iface, struct ncp *ncp, const struct ncpaddr *del) 487{ 488 struct ncpaddr found; 489 int n, res, s; 490 491 if ((s = ID0socket(ncpaddr_family(del), SOCK_DGRAM, 0)) == -1) { 492 log_Printf(LogERROR, "iface_Delete: socket(): %s\n", strerror(errno)); 493 return 0; 494 } 495 496 for (n = res = 0; n < iface->addrs; n++) { 497 ncprange_getaddr(&iface->addr[n].ifa, &found); 498 if (ncpaddr_equal(&found, del)) { 499 iface_addr_Zap(iface->name, iface->addr + n, s); 500 ncp_IfaceAddrDeleted(ncp, iface->addr + n); 501 bcopy(iface->addr + n + 1, iface->addr + n, 502 (iface->addrs - n - 1) * sizeof *iface->addr); 503 iface->addrs--; 504 res = 1; 505 break; 506 } 507 } 508 509 close(s); 510 511 return res; 512} 513 514#define IFACE_ADDFLAGS 1 515#define IFACE_DELFLAGS 2 516 517static int 518iface_ChangeFlags(const char *ifname, int flags, int how) 519{ 520 struct ifreq ifrq; 521 int s; 522 523 s = ID0socket(AF_INET, SOCK_DGRAM, 0); 524 if (s < 0) { 525 log_Printf(LogERROR, "iface_ChangeFlags: socket: %s\n", strerror(errno)); 526 return 0; 527 } 528 529 memset(&ifrq, '\0', sizeof ifrq); 530 strncpy(ifrq.ifr_name, ifname, sizeof ifrq.ifr_name - 1); 531 ifrq.ifr_name[sizeof ifrq.ifr_name - 1] = '\0'; 532 if (ID0ioctl(s, SIOCGIFFLAGS, &ifrq) < 0) { 533 log_Printf(LogERROR, "iface_ChangeFlags: ioctl(SIOCGIFFLAGS): %s\n", 534 strerror(errno)); 535 close(s); 536 return 0; 537 } 538 539 if (how == IFACE_ADDFLAGS) 540 ifrq.ifr_flags |= flags; 541 else 542 ifrq.ifr_flags &= ~flags; 543 544 if (ID0ioctl(s, SIOCSIFFLAGS, &ifrq) < 0) { 545 log_Printf(LogERROR, "iface_ChangeFlags: ioctl(SIOCSIFFLAGS): %s\n", 546 strerror(errno)); 547 close(s); 548 return 0; 549 } 550 close(s); 551 552 return 1; /* Success */ 553} 554 555int 556iface_SetFlags(const char *ifname, int flags) 557{ 558 return iface_ChangeFlags(ifname, flags, IFACE_ADDFLAGS); 559} 560 561int 562iface_ClearFlags(const char *ifname, int flags) 563{ 564 return iface_ChangeFlags(ifname, flags, IFACE_DELFLAGS); 565} 566 567void 568iface_Destroy(struct iface *iface) 569{ 570 /* 571 * iface_Clear(iface, IFACE_CLEAR_ALL) must be called manually 572 * if that's what the user wants. It's better to leave the interface 573 * allocated so that existing connections can continue to work. 574 */ 575 576 if (iface != NULL) { 577 free(iface->name); 578 free(iface->addr); 579 free(iface); 580 } 581} 582 583#define if_entry(x) { IFF_##x, #x } 584 585struct { 586 int flag; 587 const char *value; 588} if_flags[] = { 589 if_entry(UP), 590 if_entry(BROADCAST), 591 if_entry(DEBUG), 592 if_entry(LOOPBACK), 593 if_entry(POINTOPOINT), 594 if_entry(RUNNING), 595 if_entry(NOARP), 596 if_entry(PROMISC), 597 if_entry(ALLMULTI), 598 if_entry(OACTIVE), 599 if_entry(SIMPLEX), 600 if_entry(LINK0), 601 if_entry(LINK1), 602 if_entry(LINK2), 603 if_entry(MULTICAST), 604 { 0, "???" } 605}; 606 607int 608iface_Show(struct cmdargs const *arg) 609{ 610 struct ncpaddr ncpaddr; 611 struct iface *iface = arg->bundle->iface, *current; 612 int f, flags; 613#ifndef NOINET6 614 int scopeid, width; 615#endif 616 struct in_addr mask; 617 618 current = iface_Create(iface->name); 619 flags = iface->flags = current->flags; 620 iface_Destroy(current); 621 622 prompt_Printf(arg->prompt, "%s (idx %d) <", iface->name, iface->index); 623 for (f = 0; f < sizeof if_flags / sizeof if_flags[0]; f++) 624 if ((if_flags[f].flag & flags) || (!if_flags[f].flag && flags)) { 625 prompt_Printf(arg->prompt, "%s%s", flags == iface->flags ? "" : ",", 626 if_flags[f].value); 627 flags &= ~if_flags[f].flag; 628 } 629 prompt_Printf(arg->prompt, "> mtu %d has %d address%s:\n", iface->mtu, 630 iface->addrs, iface->addrs == 1 ? "" : "es"); 631 632 for (f = 0; f < iface->addrs; f++) { 633 ncprange_getaddr(&iface->addr[f].ifa, &ncpaddr); 634 switch (ncprange_family(&iface->addr[f].ifa)) { 635 case AF_INET: 636 prompt_Printf(arg->prompt, " inet %s --> ", ncpaddr_ntoa(&ncpaddr)); 637 if (ncpaddr_family(&iface->addr[f].peer) == AF_UNSPEC) 638 prompt_Printf(arg->prompt, "255.255.255.255"); 639 else 640 prompt_Printf(arg->prompt, "%s", ncpaddr_ntoa(&iface->addr[f].peer)); 641 ncprange_getip4mask(&iface->addr[f].ifa, &mask); 642 prompt_Printf(arg->prompt, " netmask 0x%08lx", (long)ntohl(mask.s_addr)); 643 break; 644 645#ifndef NOINET6 646 case AF_INET6: 647 prompt_Printf(arg->prompt, " inet6 %s", ncpaddr_ntoa(&ncpaddr)); 648 if (ncpaddr_family(&iface->addr[f].peer) != AF_UNSPEC) 649 prompt_Printf(arg->prompt, " --> %s", 650 ncpaddr_ntoa(&iface->addr[f].peer)); 651 ncprange_getwidth(&iface->addr[f].ifa, &width); 652 if (ncpaddr_family(&iface->addr[f].peer) == AF_UNSPEC) 653 prompt_Printf(arg->prompt, " prefixlen %d", width); 654 if ((scopeid = ncprange_scopeid(&iface->addr[f].ifa)) != -1) 655 prompt_Printf(arg->prompt, " scopeid 0x%x", (unsigned)scopeid); 656 break; 657#endif 658 } 659 prompt_Printf(arg->prompt, "\n"); 660 } 661 662 return 0; 663} 664 665void 666iface_ParseHdr(struct ifa_msghdr *ifam, struct sockaddr *sa[RTAX_MAX]) 667{ 668 char *wp; 669 int rtax; 670 671 wp = (char *)(ifam + 1); 672 673 for (rtax = 0; rtax < RTAX_MAX; rtax++) 674 if (ifam->ifam_addrs & (1 << rtax)) { 675 sa[rtax] = (struct sockaddr *)wp; 676 wp += ROUNDUP(sa[rtax]->sa_len); 677 } else 678 sa[rtax] = NULL; 679} 680