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