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 #include <net/route.h> 35 #include <netinet/in_systm.h> 36 #include <netinet/in_var.h> 37 #include <netinet/ip.h> 38 #ifndef NOINET6 39 #include <netinet6/nd6.h> 40 #endif 41 #include <sys/un.h> 42 43 #include <errno.h> 44 #include <string.h> 45 #include <stdarg.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include <sys/ioctl.h> 49 #include <sys/sysctl.h> 50 #include <termios.h> 51 #include <unistd.h> 52 53 #include "layer.h" 54 #include "defs.h" 55 #include "command.h" 56 #include "mbuf.h" 57 #include "log.h" 58 #include "id.h" 59 #include "timer.h" 60 #include "fsm.h" 61 #include "iplist.h" 62 #include "lqr.h" 63 #include "hdlc.h" 64 #include "throughput.h" 65 #include "slcompress.h" 66 #include "descriptor.h" 67 #include "ncpaddr.h" 68 #include "ipcp.h" 69 #include "filter.h" 70 #include "lcp.h" 71 #include "ccp.h" 72 #include "link.h" 73 #include "mp.h" 74 #ifndef NORADIUS 75 #include "radius.h" 76 #endif 77 #include "ipv6cp.h" 78 #include "ncp.h" 79 #include "bundle.h" 80 #include "prompt.h" 81 #include "iface.h" 82 83 #define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 84 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}} 85 static const struct in6_addr in6mask128 = IN6MASK128; 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 free(buf); 149 return NULL; 150 } 151 iface->name = strdup(name); 152 iface->descr = NULL; 153 iface->index = ifm->ifm_index; 154 iface->flags = ifm->ifm_flags; 155 iface->mtu = 0; 156 iface->addrs = 0; 157 iface->addr = NULL; 158 } 159 ptr += ifm->ifm_msglen; /* First ifa_msghdr */ 160 for (; ptr < end; ptr += ifam->ifam_msglen) { 161 ifam = (struct ifa_msghdr *)ptr; /* Next if address */ 162 163 if (ifam->ifam_type != RTM_NEWADDR) /* finished this if */ 164 break; 165 166 if (iface != NULL && ifam->ifam_addrs & RTA_IFA) { 167 /* Found a configured interface ! */ 168 iface_ParseHdr(ifam, sa); 169 170 if (sa[RTAX_IFA] && (sa[RTAX_IFA]->sa_family == AF_INET 171 #ifndef NOINET6 172 || sa[RTAX_IFA]->sa_family == AF_INET6 173 #endif 174 )) { 175 /* Record the address */ 176 177 addr = (struct iface_addr *) 178 realloc(iface->addr, (iface->addrs + 1) * sizeof iface->addr[0]); 179 if (addr == NULL) 180 break; 181 iface->addr = addr; 182 183 addr += iface->addrs; 184 iface->addrs++; 185 186 ncprange_setsa(&addr->ifa, sa[RTAX_IFA], sa[RTAX_NETMASK]); 187 if (sa[RTAX_BRD]) 188 ncpaddr_setsa(&addr->peer, sa[RTAX_BRD]); 189 else 190 ncpaddr_init(&addr->peer); 191 } 192 } 193 } 194 } 195 196 free(buf); 197 198 return iface; 199 } 200 201 static int 202 iface_addr_Zap(const char *name, struct iface_addr *addr, int s) 203 { 204 struct ifaliasreq ifra; 205 #ifndef NOINET6 206 struct in6_aliasreq ifra6; 207 #endif 208 struct sockaddr_in *me4, *msk4, *peer4; 209 struct sockaddr_storage ssme, sspeer, ssmsk; 210 int res; 211 212 ncprange_getsa(&addr->ifa, &ssme, &ssmsk); 213 ncpaddr_getsa(&addr->peer, &sspeer); 214 res = 0; 215 216 switch (ncprange_family(&addr->ifa)) { 217 case AF_INET: 218 memset(&ifra, '\0', sizeof ifra); 219 strncpy(ifra.ifra_name, name, sizeof ifra.ifra_name - 1); 220 221 me4 = (struct sockaddr_in *)&ifra.ifra_addr; 222 memcpy(me4, &ssme, sizeof *me4); 223 224 msk4 = (struct sockaddr_in *)&ifra.ifra_mask; 225 memcpy(msk4, &ssmsk, sizeof *msk4); 226 227 peer4 = (struct sockaddr_in *)&ifra.ifra_broadaddr; 228 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) { 229 peer4->sin_family = AF_INET; 230 peer4->sin_len = sizeof(*peer4); 231 peer4->sin_addr.s_addr = INADDR_NONE; 232 } else 233 memcpy(peer4, &sspeer, sizeof *peer4); 234 235 res = ID0ioctl(s, SIOCDIFADDR, &ifra); 236 if (log_IsKept(LogDEBUG)) { 237 char buf[100]; 238 239 snprintf(buf, sizeof buf, "%s", ncprange_ntoa(&addr->ifa)); 240 log_Printf(LogWARN, "%s: DIFADDR %s -> %s returns %d\n", 241 ifra.ifra_name, buf, ncpaddr_ntoa(&addr->peer), res); 242 } 243 break; 244 245 #ifndef NOINET6 246 case AF_INET6: 247 memset(&ifra6, '\0', sizeof ifra6); 248 strncpy(ifra6.ifra_name, name, sizeof ifra6.ifra_name - 1); 249 250 memcpy(&ifra6.ifra_addr, &ssme, sizeof ifra6.ifra_addr); 251 memcpy(&ifra6.ifra_prefixmask, &ssmsk, sizeof ifra6.ifra_prefixmask); 252 ifra6.ifra_prefixmask.sin6_family = AF_UNSPEC; 253 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 254 ifra6.ifra_dstaddr.sin6_family = AF_UNSPEC; 255 else 256 memcpy(&ifra6.ifra_dstaddr, &sspeer, sizeof ifra6.ifra_dstaddr); 257 ifra6.ifra_lifetime.ia6t_vltime = ND6_INFINITE_LIFETIME; 258 ifra6.ifra_lifetime.ia6t_pltime = ND6_INFINITE_LIFETIME; 259 260 res = ID0ioctl(s, SIOCDIFADDR_IN6, &ifra6); 261 break; 262 #endif 263 } 264 265 if (res == -1) { 266 char dst[40]; 267 const char *end = 268 #ifndef NOINET6 269 ncprange_family(&addr->ifa) == AF_INET6 ? "_IN6" : 270 #endif 271 ""; 272 273 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 274 log_Printf(LogWARN, "iface rm: ioctl(SIOCDIFADDR%s, %s): %s\n", 275 end, ncprange_ntoa(&addr->ifa), strerror(errno)); 276 else { 277 snprintf(dst, sizeof dst, "%s", ncpaddr_ntoa(&addr->peer)); 278 log_Printf(LogWARN, "iface rm: ioctl(SIOCDIFADDR%s, %s -> %s): %s\n", 279 end, ncprange_ntoa(&addr->ifa), dst, strerror(errno)); 280 } 281 } 282 283 return res != -1; 284 } 285 286 static int 287 iface_addr_Add(const char *name, struct iface_addr *addr, int s) 288 { 289 struct ifaliasreq ifra; 290 #ifndef NOINET6 291 struct in6_aliasreq ifra6; 292 #endif 293 struct sockaddr_in *me4, *msk4, *peer4; 294 struct sockaddr_storage ssme, sspeer, ssmsk; 295 int res; 296 297 ncprange_getsa(&addr->ifa, &ssme, &ssmsk); 298 ncpaddr_getsa(&addr->peer, &sspeer); 299 res = 0; 300 301 switch (ncprange_family(&addr->ifa)) { 302 case AF_INET: 303 memset(&ifra, '\0', sizeof ifra); 304 strncpy(ifra.ifra_name, name, sizeof ifra.ifra_name - 1); 305 306 me4 = (struct sockaddr_in *)&ifra.ifra_addr; 307 memcpy(me4, &ssme, sizeof *me4); 308 309 msk4 = (struct sockaddr_in *)&ifra.ifra_mask; 310 memcpy(msk4, &ssmsk, sizeof *msk4); 311 312 peer4 = (struct sockaddr_in *)&ifra.ifra_broadaddr; 313 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) { 314 peer4->sin_family = AF_INET; 315 peer4->sin_len = sizeof(*peer4); 316 peer4->sin_addr.s_addr = INADDR_NONE; 317 } else 318 memcpy(peer4, &sspeer, sizeof *peer4); 319 320 res = ID0ioctl(s, SIOCAIFADDR, &ifra); 321 if (log_IsKept(LogDEBUG)) { 322 char buf[100]; 323 324 snprintf(buf, sizeof buf, "%s", ncprange_ntoa(&addr->ifa)); 325 log_Printf(LogWARN, "%s: AIFADDR %s -> %s returns %d\n", 326 ifra.ifra_name, buf, ncpaddr_ntoa(&addr->peer), res); 327 } 328 break; 329 330 #ifndef NOINET6 331 case AF_INET6: 332 memset(&ifra6, '\0', sizeof ifra6); 333 strncpy(ifra6.ifra_name, name, sizeof ifra6.ifra_name - 1); 334 335 memcpy(&ifra6.ifra_addr, &ssme, sizeof ifra6.ifra_addr); 336 memcpy(&ifra6.ifra_prefixmask, &ssmsk, sizeof ifra6.ifra_prefixmask); 337 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 338 ifra6.ifra_dstaddr.sin6_family = AF_UNSPEC; 339 else if (memcmp(&((struct sockaddr_in6 *)&ssmsk)->sin6_addr, &in6mask128, 340 sizeof in6mask128) == 0) 341 memcpy(&ifra6.ifra_dstaddr, &sspeer, sizeof ifra6.ifra_dstaddr); 342 ifra6.ifra_lifetime.ia6t_vltime = ND6_INFINITE_LIFETIME; 343 ifra6.ifra_lifetime.ia6t_pltime = ND6_INFINITE_LIFETIME; 344 345 res = ID0ioctl(s, SIOCAIFADDR_IN6, &ifra6); 346 break; 347 #endif 348 } 349 350 if (res == -1) { 351 char dst[40]; 352 const char *end = 353 #ifndef NOINET6 354 ncprange_family(&addr->ifa) == AF_INET6 ? "_IN6" : 355 #endif 356 ""; 357 358 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 359 log_Printf(LogWARN, "iface add: ioctl(SIOCAIFADDR%s, %s): %s\n", 360 end, ncprange_ntoa(&addr->ifa), strerror(errno)); 361 else { 362 snprintf(dst, sizeof dst, "%s", ncpaddr_ntoa(&addr->peer)); 363 log_Printf(LogWARN, "iface add: ioctl(SIOCAIFADDR%s, %s -> %s): %s\n", 364 end, ncprange_ntoa(&addr->ifa), dst, strerror(errno)); 365 } 366 } 367 368 return res != -1; 369 } 370 371 int 372 iface_Name(struct iface *iface, const char *name) 373 { 374 struct ifreq ifr; 375 int s; 376 char *newname; 377 378 if ((newname = strdup(name)) == NULL) { 379 log_Printf(LogWARN, "iface name: strdup failed: %s\n", strerror(errno)); 380 return 0; 381 } 382 383 if ((s = ID0socket(PF_INET, SOCK_DGRAM, 0)) == -1) { 384 log_Printf(LogERROR, "iface name: socket(): %s\n", strerror(errno)); 385 free(newname); 386 return 0; 387 } 388 389 strlcpy(ifr.ifr_name, iface->name, sizeof(ifr.ifr_name)); 390 ifr.ifr_data = newname; 391 if (ID0ioctl(s, SIOCSIFNAME, (caddr_t)&ifr) < 0) { 392 log_Printf(LogWARN, "iface name: ioctl(SIOCSIFNAME, %s -> %s): %s\n", 393 name, newname, strerror(errno)); 394 free(newname); 395 return 0; 396 } 397 398 free(iface->name); 399 iface->name = newname; 400 401 return 1; 402 } 403 404 int 405 iface_Descr(struct cmdargs const *arg) 406 { 407 struct ifreq ifr; 408 struct iface *iface; 409 size_t sz, len; 410 int s, n, ifdescr_maxlen; 411 char *descr; 412 413 sz = sizeof(int); 414 if (sysctlbyname("net.ifdescr_maxlen", &ifdescr_maxlen, &sz, NULL, 0) < 0) { 415 log_Printf(LogERROR, "iface descr: sysctl failed: %s\n", strerror(errno)); 416 return 1; 417 } 418 419 if (ifdescr_maxlen < 1) { 420 log_Printf(LogERROR, "iface descr: sysctl net.ifdescr_maxlen < 1\n"); 421 return 1; 422 } 423 424 sz = sizeof(char) * ifdescr_maxlen; 425 if ((descr = malloc(sz)) == NULL) { 426 log_Printf(LogERROR, "iface descr: malloc failed: %s\n", strerror(errno)); 427 return 1; 428 } 429 430 *descr = '\0'; 431 n = arg->argn; 432 while (n < arg->argc) { 433 if (n > arg->argn && (len = strlcat(descr, " ", sz)) >= sz) 434 break; 435 if ((len = strlcat(descr, arg->argv[n], sz)) >= sz) 436 break; 437 ++n; 438 } 439 if (len >= sz) { 440 log_Printf(LogERROR, "iface descr: description exceeds maximum (%d)\n", 441 ifdescr_maxlen-1); 442 free(descr); 443 return 1; 444 } 445 446 if ((s = ID0socket(PF_INET, SOCK_DGRAM, 0)) == -1) { 447 log_Printf(LogERROR, "iface descr: socket(): %s\n", strerror(errno)); 448 free(descr); 449 return 1; 450 } 451 452 iface = arg->bundle->iface; 453 strlcpy(ifr.ifr_name, iface->name, sizeof(ifr.ifr_name)); 454 ifr.ifr_buffer.length = strlen(descr) + 1; 455 ifr.ifr_buffer.buffer = descr; 456 if (ID0ioctl(s, SIOCSIFDESCR, (caddr_t)&ifr) < 0) { 457 log_Printf(LogWARN, "iface descr: ioctl(SIOCSIFDESCR, %s): %s\n", 458 descr, strerror(errno)); 459 free(descr); 460 return 1; 461 } 462 463 free(iface->descr); 464 iface->descr = descr; 465 466 return 0; 467 } 468 469 void 470 iface_Clear(struct iface *iface, struct ncp *ncp, int family, int how) 471 { 472 int af, inskip, in6skip, s4 = -1, s6 = -1, *s; 473 unsigned n; 474 475 if (iface->addrs) { 476 inskip = in6skip = how == IFACE_CLEAR_ALL ? 0 : 1; 477 478 for (n = 0; n < iface->addrs; n++) { 479 af = ncprange_family(&iface->addr[n].ifa); 480 if (family == 0 || family == af) { 481 if (!iface->addr[n].system && (how & IFACE_SYSTEM)) 482 continue; 483 switch (af) { 484 case AF_INET: 485 if (inskip) { 486 inskip = 0; 487 continue; 488 } 489 s = &s4; 490 break; 491 492 #ifndef NOINET6 493 case AF_INET6: 494 if (in6skip) { 495 in6skip = 0; 496 continue; 497 } 498 s = &s6; 499 break; 500 #endif 501 default: 502 continue; 503 } 504 505 if (*s == -1 && (*s = ID0socket(af, SOCK_DGRAM, 0)) == -1) 506 log_Printf(LogERROR, "iface_Clear: socket(): %s\n", strerror(errno)); 507 else if (iface_addr_Zap(iface->name, iface->addr + n, *s)) { 508 ncp_IfaceAddrDeleted(ncp, iface->addr + n); 509 bcopy(iface->addr + n + 1, iface->addr + n, 510 (iface->addrs - n - 1) * sizeof *iface->addr); 511 iface->addrs--; 512 n--; 513 } 514 } 515 } 516 517 /* Don't bother realloc()ing - we have little to gain */ 518 519 if (s4) 520 close(s4); 521 if (s6) 522 close(s6); 523 } 524 } 525 526 int 527 iface_Add(struct iface *iface, struct ncp *ncp, const struct ncprange *ifa, 528 const struct ncpaddr *peer, int how) 529 { 530 int af, removed, s; 531 unsigned n; 532 struct ncpaddr ncplocal; 533 struct iface_addr *addr, newaddr; 534 535 af = ncprange_family(ifa); 536 if ((s = ID0socket(af, SOCK_DGRAM, 0)) == -1) { 537 log_Printf(LogERROR, "iface_Add: socket(): %s\n", strerror(errno)); 538 return 0; 539 } 540 ncprange_getaddr(ifa, &ncplocal); 541 542 for (n = 0; n < iface->addrs; n++) { 543 if (ncprange_contains(&iface->addr[n].ifa, &ncplocal) || 544 ncpaddr_equal(&iface->addr[n].peer, peer)) { 545 /* Replace this sockaddr */ 546 if (!(how & IFACE_FORCE_ADD)) { 547 close(s); 548 return 0; /* errno = EEXIST; */ 549 } 550 551 if (ncprange_equal(&iface->addr[n].ifa, ifa) && 552 ncpaddr_equal(&iface->addr[n].peer, peer)) { 553 close(s); 554 ncp_IfaceAddrAdded(ncp, iface->addr + n); 555 return 1; /* Already there */ 556 } 557 558 removed = iface_addr_Zap(iface->name, iface->addr + n, s); 559 if (removed) 560 ncp_IfaceAddrDeleted(ncp, iface->addr + n); 561 ncprange_copy(&iface->addr[n].ifa, ifa); 562 ncpaddr_copy(&iface->addr[n].peer, peer); 563 if (!iface_addr_Add(iface->name, iface->addr + n, s)) { 564 if (removed) { 565 bcopy(iface->addr + n + 1, iface->addr + n, 566 (iface->addrs - n - 1) * sizeof *iface->addr); 567 iface->addrs--; 568 n--; 569 } 570 close(s); 571 return 0; 572 } 573 close(s); 574 ncp_IfaceAddrAdded(ncp, iface->addr + n); 575 return 1; 576 } 577 } 578 579 addr = (struct iface_addr *)realloc 580 (iface->addr, (iface->addrs + 1) * sizeof iface->addr[0]); 581 if (addr == NULL) { 582 log_Printf(LogERROR, "iface_inAdd: realloc: %s\n", strerror(errno)); 583 close(s); 584 return 0; 585 } 586 iface->addr = addr; 587 588 ncprange_copy(&newaddr.ifa, ifa); 589 ncpaddr_copy(&newaddr.peer, peer); 590 newaddr.system = !!(how & IFACE_SYSTEM); 591 if (!iface_addr_Add(iface->name, &newaddr, s)) { 592 close(s); 593 return 0; 594 } 595 596 if (how & IFACE_ADD_FIRST) { 597 /* Stuff it at the start of our list */ 598 n = 0; 599 bcopy(iface->addr, iface->addr + 1, iface->addrs * sizeof *iface->addr); 600 } else 601 n = iface->addrs; 602 603 iface->addrs++; 604 memcpy(iface->addr + n, &newaddr, sizeof(*iface->addr)); 605 606 close(s); 607 ncp_IfaceAddrAdded(ncp, iface->addr + n); 608 609 return 1; 610 } 611 612 int 613 iface_Delete(struct iface *iface, struct ncp *ncp, const struct ncpaddr *del) 614 { 615 struct ncpaddr found; 616 unsigned n; 617 int res, s; 618 619 if ((s = ID0socket(ncpaddr_family(del), SOCK_DGRAM, 0)) == -1) { 620 log_Printf(LogERROR, "iface_Delete: socket(): %s\n", strerror(errno)); 621 return 0; 622 } 623 624 for (n = res = 0; n < iface->addrs; n++) { 625 ncprange_getaddr(&iface->addr[n].ifa, &found); 626 if (ncpaddr_equal(&found, del)) { 627 if (iface_addr_Zap(iface->name, iface->addr + n, s)) { 628 ncp_IfaceAddrDeleted(ncp, iface->addr + n); 629 bcopy(iface->addr + n + 1, iface->addr + n, 630 (iface->addrs - n - 1) * sizeof *iface->addr); 631 iface->addrs--; 632 res = 1; 633 } 634 break; 635 } 636 } 637 638 close(s); 639 640 return res; 641 } 642 643 #define IFACE_ADDFLAGS 1 644 #define IFACE_DELFLAGS 2 645 646 static int 647 iface_ChangeFlags(const char *ifname, int flags, int how) 648 { 649 struct ifreq ifrq; 650 int s, new_flags; 651 652 s = ID0socket(PF_INET, SOCK_DGRAM, 0); 653 if (s < 0) { 654 log_Printf(LogERROR, "iface_ChangeFlags: socket: %s\n", strerror(errno)); 655 return 0; 656 } 657 658 memset(&ifrq, '\0', sizeof ifrq); 659 strncpy(ifrq.ifr_name, ifname, sizeof ifrq.ifr_name - 1); 660 ifrq.ifr_name[sizeof ifrq.ifr_name - 1] = '\0'; 661 if (ID0ioctl(s, SIOCGIFFLAGS, &ifrq) < 0) { 662 log_Printf(LogERROR, "iface_ChangeFlags: ioctl(SIOCGIFFLAGS): %s\n", 663 strerror(errno)); 664 close(s); 665 return 0; 666 } 667 #ifdef __FreeBSD__ 668 new_flags = (ifrq.ifr_flags & 0xffff) | (ifrq.ifr_flagshigh << 16); 669 #else 670 new_flags = ifrq.ifr_flags & 0xffff; 671 #endif 672 673 if (how == IFACE_ADDFLAGS) 674 new_flags |= flags; 675 else 676 new_flags &= ~flags; 677 ifrq.ifr_flags = new_flags & 0xffff; 678 #ifdef __FreeBSD__ 679 ifrq.ifr_flagshigh = new_flags >> 16; 680 #endif 681 682 if (ID0ioctl(s, SIOCSIFFLAGS, &ifrq) < 0) { 683 log_Printf(LogERROR, "iface_ChangeFlags: ioctl(SIOCSIFFLAGS): %s\n", 684 strerror(errno)); 685 close(s); 686 return 0; 687 } 688 close(s); 689 690 return 1; /* Success */ 691 } 692 693 int 694 iface_SetFlags(const char *ifname, int flags) 695 { 696 return iface_ChangeFlags(ifname, flags, IFACE_ADDFLAGS); 697 } 698 699 int 700 iface_ClearFlags(const char *ifname, int flags) 701 { 702 return iface_ChangeFlags(ifname, flags, IFACE_DELFLAGS); 703 } 704 705 void 706 iface_Free(struct iface *iface) 707 { 708 free(iface->name); 709 free(iface->descr); 710 free(iface->addr); 711 free(iface); 712 } 713 714 void 715 iface_Destroy(struct iface *iface) 716 { 717 struct ifreq ifr; 718 int s; 719 720 if (iface != NULL) { 721 if ((s = ID0socket(PF_INET, SOCK_DGRAM, 0)) == -1) { 722 log_Printf(LogERROR, "iface_Destroy: socket(): %s\n", strerror(errno)); 723 } else { 724 strlcpy(ifr.ifr_name, iface->name, sizeof(ifr.ifr_name)); 725 if (ID0ioctl(s, SIOCIFDESTROY, (caddr_t)&ifr) < 0) 726 log_Printf(LogWARN, "iface_Destroy: ioctl(SIOCIFDESTROY, %s): %s\n", 727 iface->name, strerror(errno)); 728 } 729 iface_Free(iface); 730 } 731 } 732 733 #define if_entry(x) { IFF_##x, #x } 734 735 struct { 736 int flag; 737 const char *value; 738 } if_flags[] = { 739 if_entry(UP), 740 if_entry(BROADCAST), 741 if_entry(DEBUG), 742 if_entry(LOOPBACK), 743 if_entry(POINTOPOINT), 744 if_entry(RUNNING), 745 if_entry(NOARP), 746 if_entry(PROMISC), 747 if_entry(ALLMULTI), 748 if_entry(OACTIVE), 749 if_entry(SIMPLEX), 750 if_entry(LINK0), 751 if_entry(LINK1), 752 if_entry(LINK2), 753 if_entry(MULTICAST), 754 { 0, "???" } 755 }; 756 757 int 758 iface_Show(struct cmdargs const *arg) 759 { 760 struct ncpaddr ncpaddr; 761 struct iface *iface = arg->bundle->iface, *current; 762 unsigned f; 763 int flags; 764 #ifndef NOINET6 765 int scopeid, width; 766 #endif 767 struct in_addr mask; 768 769 current = iface_Create(iface->name); 770 flags = iface->flags = current->flags; 771 iface_Free(current); 772 773 prompt_Printf(arg->prompt, "%s (idx %d) <", iface->name, iface->index); 774 for (f = 0; f < sizeof if_flags / sizeof if_flags[0]; f++) 775 if ((if_flags[f].flag & flags)) { 776 prompt_Printf(arg->prompt, "%s%s", flags == iface->flags ? "" : ",", 777 if_flags[f].value); 778 flags &= ~if_flags[f].flag; 779 } 780 781 #if 0 782 if (flags) 783 prompt_Printf(arg->prompt, "%s0x%x", flags == iface->flags ? "" : ",", 784 flags); 785 #endif 786 787 prompt_Printf(arg->prompt, "> mtu %lu has %d address%s:\n", iface->mtu, 788 iface->addrs, iface->addrs == 1 ? "" : "es"); 789 790 for (f = 0; f < iface->addrs; f++) { 791 ncprange_getaddr(&iface->addr[f].ifa, &ncpaddr); 792 switch (ncprange_family(&iface->addr[f].ifa)) { 793 case AF_INET: 794 prompt_Printf(arg->prompt, " inet %s --> ", ncpaddr_ntoa(&ncpaddr)); 795 if (ncpaddr_family(&iface->addr[f].peer) == AF_UNSPEC) 796 prompt_Printf(arg->prompt, "255.255.255.255"); 797 else 798 prompt_Printf(arg->prompt, "%s", ncpaddr_ntoa(&iface->addr[f].peer)); 799 ncprange_getip4mask(&iface->addr[f].ifa, &mask); 800 prompt_Printf(arg->prompt, " netmask 0x%08lx", (long)ntohl(mask.s_addr)); 801 break; 802 803 #ifndef NOINET6 804 case AF_INET6: 805 prompt_Printf(arg->prompt, " inet6 %s", ncpaddr_ntoa(&ncpaddr)); 806 if (ncpaddr_family(&iface->addr[f].peer) != AF_UNSPEC) 807 prompt_Printf(arg->prompt, " --> %s", 808 ncpaddr_ntoa(&iface->addr[f].peer)); 809 ncprange_getwidth(&iface->addr[f].ifa, &width); 810 if (ncpaddr_family(&iface->addr[f].peer) == AF_UNSPEC) 811 prompt_Printf(arg->prompt, " prefixlen %d", width); 812 if ((scopeid = ncprange_scopeid(&iface->addr[f].ifa)) != -1) 813 prompt_Printf(arg->prompt, " scopeid 0x%x", (unsigned)scopeid); 814 break; 815 #endif 816 } 817 prompt_Printf(arg->prompt, "\n"); 818 } 819 820 return 0; 821 } 822 823 void 824 iface_ParseHdr(struct ifa_msghdr *ifam, struct sockaddr *sa[RTAX_MAX]) 825 { 826 char *wp; 827 int rtax; 828 829 wp = (char *)(ifam + 1); 830 831 for (rtax = 0; rtax < RTAX_MAX; rtax++) 832 if (ifam->ifam_addrs & (1 << rtax)) { 833 sa[rtax] = (struct sockaddr *)wp; 834 wp += ROUNDUP(sa[rtax]->sa_len); 835 } else 836 sa[rtax] = NULL; 837 } 838