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, n, s4 = -1, s6 = -1, *s; 378 379 if (iface->addrs) { 380 inskip = in6skip = how == IFACE_CLEAR_ALL ? 0 : 1; 381 addrs = 0; 382 383 for (n = 0; n < iface->addrs; n++) { 384 af = ncprange_family(&iface->addr[n].ifa); 385 if (family == 0 || family == af) { 386 if (!iface->addr[n].system && (how & IFACE_SYSTEM)) 387 continue; 388 switch (af) { 389 case AF_INET: 390 if (inskip) { 391 inskip = 0; 392 continue; 393 } 394 s = &s4; 395 break; 396 397 #ifndef NOINET6 398 case AF_INET6: 399 if (in6skip) { 400 in6skip = 0; 401 continue; 402 } 403 s = &s6; 404 break; 405 #endif 406 default: 407 continue; 408 } 409 410 if (*s == -1 && (*s = ID0socket(af, SOCK_DGRAM, 0)) == -1) 411 log_Printf(LogERROR, "iface_Clear: socket(): %s\n", strerror(errno)); 412 else if (iface_addr_Zap(iface->name, iface->addr + n, *s)) { 413 ncp_IfaceAddrDeleted(ncp, iface->addr + n); 414 bcopy(iface->addr + n + 1, iface->addr + n, 415 (iface->addrs - n - 1) * sizeof *iface->addr); 416 iface->addrs--; 417 n--; 418 } 419 } 420 } 421 422 /* Don't bother realloc()ing - we have little to gain */ 423 424 if (s4) 425 close(s4); 426 if (s6) 427 close(s6); 428 } 429 } 430 431 int 432 iface_Add(struct iface *iface, struct ncp *ncp, const struct ncprange *ifa, 433 const struct ncpaddr *peer, int how) 434 { 435 int af, n, removed, s; 436 struct ncpaddr ncplocal; 437 struct iface_addr *addr, newaddr; 438 439 af = ncprange_family(ifa); 440 if ((s = ID0socket(af, SOCK_DGRAM, 0)) == -1) { 441 log_Printf(LogERROR, "iface_Add: socket(): %s\n", strerror(errno)); 442 return 0; 443 } 444 ncprange_getaddr(ifa, &ncplocal); 445 446 for (n = 0; n < iface->addrs; n++) { 447 if (ncprange_contains(&iface->addr[n].ifa, &ncplocal) || 448 ncpaddr_equal(&iface->addr[n].peer, peer)) { 449 /* Replace this sockaddr */ 450 if (!(how & IFACE_FORCE_ADD)) { 451 close(s); 452 return 0; /* errno = EEXIST; */ 453 } 454 455 if (ncprange_equal(&iface->addr[n].ifa, ifa) && 456 ncpaddr_equal(&iface->addr[n].peer, peer)) { 457 close(s); 458 return 1; /* Already there */ 459 } 460 461 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