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 <netinet/in_systm.h> 39 #include <netinet/in_var.h> 40 #include <netinet/ip.h> 41 #ifndef NOINET6 42 #include <netinet6/nd6.h> 43 #endif 44 #include <sys/un.h> 45 46 #include <errno.h> 47 #include <string.h> 48 #include <stdarg.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 "ipcp.h" 72 #include "filter.h" 73 #include "lcp.h" 74 #include "ccp.h" 75 #include "link.h" 76 #include "mp.h" 77 #ifndef NORADIUS 78 #include "radius.h" 79 #endif 80 #include "ipv6cp.h" 81 #include "ncp.h" 82 #include "bundle.h" 83 #include "prompt.h" 84 #include "iface.h" 85 86 #define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 87 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}} 88 static const struct in6_addr in6mask128 = IN6MASK128; 89 90 91 struct iface * 92 iface_Create(const char *name) 93 { 94 int mib[6], maxtries, err; 95 size_t needed, namelen; 96 char *buf, *ptr, *end; 97 struct if_msghdr *ifm; 98 struct ifa_msghdr *ifam; 99 struct sockaddr_dl *dl; 100 struct sockaddr *sa[RTAX_MAX]; 101 struct iface *iface; 102 struct iface_addr *addr; 103 104 mib[0] = CTL_NET; 105 mib[1] = PF_ROUTE; 106 mib[2] = 0; 107 mib[3] = 0; 108 mib[4] = NET_RT_IFLIST; 109 mib[5] = 0; 110 111 maxtries = 20; 112 err = 0; 113 do { 114 if (maxtries-- == 0 || (err && err != ENOMEM)) { 115 fprintf(stderr, "iface_Create: sysctl: %s\n", strerror(err)); 116 return NULL; 117 } 118 119 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 120 fprintf(stderr, "iface_Create: sysctl: estimate: %s\n", 121 strerror(errno)); 122 return NULL; 123 } 124 125 if ((buf = (char *)malloc(needed)) == NULL) { 126 fprintf(stderr, "iface_Create: malloc failed: %s\n", strerror(errno)); 127 return NULL; 128 } 129 130 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 131 err = errno; 132 free(buf); 133 buf = NULL; 134 } 135 } while (buf == NULL); 136 137 ptr = buf; 138 end = buf + needed; 139 iface = NULL; 140 namelen = strlen(name); 141 142 while (ptr < end && iface == NULL) { 143 ifm = (struct if_msghdr *)ptr; /* On if_msghdr */ 144 if (ifm->ifm_type != RTM_IFINFO) 145 break; 146 dl = (struct sockaddr_dl *)(ifm + 1); /* Single _dl at end */ 147 if (dl->sdl_nlen == namelen && !strncmp(name, dl->sdl_data, namelen)) { 148 iface = (struct iface *)malloc(sizeof *iface); 149 if (iface == NULL) { 150 fprintf(stderr, "iface_Create: malloc: %s\n", strerror(errno)); 151 return NULL; 152 } 153 iface->name = strdup(name); 154 iface->descr = NULL; 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 int 374 iface_Name(struct iface *iface, const char *name) 375 { 376 struct ifreq ifr; 377 int s; 378 char *newname; 379 380 if ((newname = strdup(name)) == NULL) { 381 log_Printf(LogWARN, "iface name: strdup failed: %s\n", strerror(errno)); 382 return 0; 383 } 384 385 if ((s = ID0socket(PF_INET, SOCK_DGRAM, 0)) == -1) { 386 log_Printf(LogERROR, "iface name: socket(): %s\n", strerror(errno)); 387 free(newname); 388 return 0; 389 } 390 391 strlcpy(ifr.ifr_name, iface->name, sizeof(ifr.ifr_name)); 392 ifr.ifr_data = newname; 393 if (ID0ioctl(s, SIOCSIFNAME, (caddr_t)&ifr) < 0) { 394 log_Printf(LogWARN, "iface name: ioctl(SIOCSIFNAME, %s -> %s): %s\n", 395 name, newname, strerror(errno)); 396 free(newname); 397 return 0; 398 } 399 400 free(iface->name); 401 iface->name = newname; 402 403 return 1; 404 } 405 406 int 407 iface_Descr(struct cmdargs const *arg) 408 { 409 struct ifreq ifr; 410 struct iface *iface; 411 size_t sz, len; 412 int s, n, ifdescr_maxlen; 413 char *descr; 414 415 sz = sizeof(int); 416 if (sysctlbyname("net.ifdescr_maxlen", &ifdescr_maxlen, &sz, NULL, 0) < 0) { 417 log_Printf(LogERROR, "iface descr: sysctl failed: %s\n", strerror(errno)); 418 return 1; 419 } 420 421 if (ifdescr_maxlen < 1) { 422 log_Printf(LogERROR, "iface descr: sysctl net.ifdescr_maxlen < 1\n"); 423 return 1; 424 } 425 426 sz = sizeof(char) * ifdescr_maxlen; 427 if ((descr = malloc(sz)) == NULL) { 428 log_Printf(LogERROR, "iface descr: malloc failed: %s\n", strerror(errno)); 429 return 1; 430 } 431 432 *descr = '\0'; 433 n = arg->argn; 434 while (n < arg->argc) { 435 if (n > arg->argn && (len = strlcat(descr, " ", sz)) >= sz) 436 break; 437 if ((len = strlcat(descr, arg->argv[n], sz)) >= sz) 438 break; 439 ++n; 440 } 441 if (len >= sz) { 442 log_Printf(LogERROR, "iface descr: description exceeds maximum (%d)\n", 443 ifdescr_maxlen-1); 444 free(descr); 445 return 1; 446 } 447 448 if ((s = ID0socket(PF_INET, SOCK_DGRAM, 0)) == -1) { 449 log_Printf(LogERROR, "iface descr: socket(): %s\n", strerror(errno)); 450 free(descr); 451 return 1; 452 } 453 454 iface = arg->bundle->iface; 455 strlcpy(ifr.ifr_name, iface->name, sizeof(ifr.ifr_name)); 456 ifr.ifr_buffer.length = strlen(descr) + 1; 457 ifr.ifr_buffer.buffer = descr; 458 if (ID0ioctl(s, SIOCSIFDESCR, (caddr_t)&ifr) < 0) { 459 log_Printf(LogWARN, "iface descr: ioctl(SIOCSIFDESCR, %s): %s\n", 460 descr, strerror(errno)); 461 free(descr); 462 return 1; 463 } 464 465 free(iface->descr); 466 iface->descr = descr; 467 468 return 0; 469 } 470 471 void 472 iface_Clear(struct iface *iface, struct ncp *ncp, int family, int how) 473 { 474 int af, inskip, in6skip, s4 = -1, s6 = -1, *s; 475 unsigned n; 476 477 if (iface->addrs) { 478 inskip = in6skip = how == IFACE_CLEAR_ALL ? 0 : 1; 479 480 for (n = 0; n < iface->addrs; n++) { 481 af = ncprange_family(&iface->addr[n].ifa); 482 if (family == 0 || family == af) { 483 if (!iface->addr[n].system && (how & IFACE_SYSTEM)) 484 continue; 485 switch (af) { 486 case AF_INET: 487 if (inskip) { 488 inskip = 0; 489 continue; 490 } 491 s = &s4; 492 break; 493 494 #ifndef NOINET6 495 case AF_INET6: 496 if (in6skip) { 497 in6skip = 0; 498 continue; 499 } 500 s = &s6; 501 break; 502 #endif 503 default: 504 continue; 505 } 506 507 if (*s == -1 && (*s = ID0socket(af, SOCK_DGRAM, 0)) == -1) 508 log_Printf(LogERROR, "iface_Clear: socket(): %s\n", strerror(errno)); 509 else if (iface_addr_Zap(iface->name, iface->addr + n, *s)) { 510 ncp_IfaceAddrDeleted(ncp, iface->addr + n); 511 bcopy(iface->addr + n + 1, iface->addr + n, 512 (iface->addrs - n - 1) * sizeof *iface->addr); 513 iface->addrs--; 514 n--; 515 } 516 } 517 } 518 519 /* Don't bother realloc()ing - we have little to gain */ 520 521 if (s4) 522 close(s4); 523 if (s6) 524 close(s6); 525 } 526 } 527 528 int 529 iface_Add(struct iface *iface, struct ncp *ncp, const struct ncprange *ifa, 530 const struct ncpaddr *peer, int how) 531 { 532 int af, removed, s; 533 unsigned n; 534 struct ncpaddr ncplocal; 535 struct iface_addr *addr, newaddr; 536 537 af = ncprange_family(ifa); 538 if ((s = ID0socket(af, SOCK_DGRAM, 0)) == -1) { 539 log_Printf(LogERROR, "iface_Add: socket(): %s\n", strerror(errno)); 540 return 0; 541 } 542 ncprange_getaddr(ifa, &ncplocal); 543 544 for (n = 0; n < iface->addrs; n++) { 545 if (ncprange_contains(&iface->addr[n].ifa, &ncplocal) || 546 ncpaddr_equal(&iface->addr[n].peer, peer)) { 547 /* Replace this sockaddr */ 548 if (!(how & IFACE_FORCE_ADD)) { 549 close(s); 550 return 0; /* errno = EEXIST; */ 551 } 552 553 if (ncprange_equal(&iface->addr[n].ifa, ifa) && 554 ncpaddr_equal(&iface->addr[n].peer, peer)) { 555 close(s); 556 ncp_IfaceAddrAdded(ncp, iface->addr + n); 557 return 1; /* Already there */ 558 } 559 560 removed = iface_addr_Zap(iface->name, iface->addr + n, s); 561 if (removed) 562 ncp_IfaceAddrDeleted(ncp, iface->addr + n); 563 ncprange_copy(&iface->addr[n].ifa, ifa); 564 ncpaddr_copy(&iface->addr[n].peer, peer); 565 if (!iface_addr_Add(iface->name, iface->addr + n, s)) { 566 if (removed) { 567 bcopy(iface->addr + n + 1, iface->addr + n, 568 (iface->addrs - n - 1) * sizeof *iface->addr); 569 iface->addrs--; 570 n--; 571 } 572 close(s); 573 return 0; 574 } 575 close(s); 576 ncp_IfaceAddrAdded(ncp, iface->addr + n); 577 return 1; 578 } 579 } 580 581 addr = (struct iface_addr *)realloc 582 (iface->addr, (iface->addrs + 1) * sizeof iface->addr[0]); 583 if (addr == NULL) { 584 log_Printf(LogERROR, "iface_inAdd: realloc: %s\n", strerror(errno)); 585 close(s); 586 return 0; 587 } 588 iface->addr = addr; 589 590 ncprange_copy(&newaddr.ifa, ifa); 591 ncpaddr_copy(&newaddr.peer, peer); 592 newaddr.system = !!(how & IFACE_SYSTEM); 593 if (!iface_addr_Add(iface->name, &newaddr, s)) { 594 close(s); 595 return 0; 596 } 597 598 if (how & IFACE_ADD_FIRST) { 599 /* Stuff it at the start of our list */ 600 n = 0; 601 bcopy(iface->addr, iface->addr + 1, iface->addrs * sizeof *iface->addr); 602 } else 603 n = iface->addrs; 604 605 iface->addrs++; 606 memcpy(iface->addr + n, &newaddr, sizeof(*iface->addr)); 607 608 close(s); 609 ncp_IfaceAddrAdded(ncp, iface->addr + n); 610 611 return 1; 612 } 613 614 int 615 iface_Delete(struct iface *iface, struct ncp *ncp, const struct ncpaddr *del) 616 { 617 struct ncpaddr found; 618 unsigned n; 619 int res, s; 620 621 if ((s = ID0socket(ncpaddr_family(del), SOCK_DGRAM, 0)) == -1) { 622 log_Printf(LogERROR, "iface_Delete: socket(): %s\n", strerror(errno)); 623 return 0; 624 } 625 626 for (n = res = 0; n < iface->addrs; n++) { 627 ncprange_getaddr(&iface->addr[n].ifa, &found); 628 if (ncpaddr_equal(&found, del)) { 629 if (iface_addr_Zap(iface->name, iface->addr + n, s)) { 630 ncp_IfaceAddrDeleted(ncp, iface->addr + n); 631 bcopy(iface->addr + n + 1, iface->addr + n, 632 (iface->addrs - n - 1) * sizeof *iface->addr); 633 iface->addrs--; 634 res = 1; 635 } 636 break; 637 } 638 } 639 640 close(s); 641 642 return res; 643 } 644 645 #define IFACE_ADDFLAGS 1 646 #define IFACE_DELFLAGS 2 647 648 static int 649 iface_ChangeFlags(const char *ifname, int flags, int how) 650 { 651 struct ifreq ifrq; 652 int s, new_flags; 653 654 s = ID0socket(PF_INET, SOCK_DGRAM, 0); 655 if (s < 0) { 656 log_Printf(LogERROR, "iface_ChangeFlags: socket: %s\n", strerror(errno)); 657 return 0; 658 } 659 660 memset(&ifrq, '\0', sizeof ifrq); 661 strncpy(ifrq.ifr_name, ifname, sizeof ifrq.ifr_name - 1); 662 ifrq.ifr_name[sizeof ifrq.ifr_name - 1] = '\0'; 663 if (ID0ioctl(s, SIOCGIFFLAGS, &ifrq) < 0) { 664 log_Printf(LogERROR, "iface_ChangeFlags: ioctl(SIOCGIFFLAGS): %s\n", 665 strerror(errno)); 666 close(s); 667 return 0; 668 } 669 #ifdef __FreeBSD__ 670 new_flags = (ifrq.ifr_flags & 0xffff) | (ifrq.ifr_flagshigh << 16); 671 #else 672 new_flags = ifrq.ifr_flags & 0xffff; 673 #endif 674 675 if (how == IFACE_ADDFLAGS) 676 new_flags |= flags; 677 else 678 new_flags &= ~flags; 679 ifrq.ifr_flags = new_flags & 0xffff; 680 #ifdef __FreeBSD__ 681 ifrq.ifr_flagshigh = new_flags >> 16; 682 #endif 683 684 if (ID0ioctl(s, SIOCSIFFLAGS, &ifrq) < 0) { 685 log_Printf(LogERROR, "iface_ChangeFlags: ioctl(SIOCSIFFLAGS): %s\n", 686 strerror(errno)); 687 close(s); 688 return 0; 689 } 690 close(s); 691 692 return 1; /* Success */ 693 } 694 695 int 696 iface_SetFlags(const char *ifname, int flags) 697 { 698 return iface_ChangeFlags(ifname, flags, IFACE_ADDFLAGS); 699 } 700 701 int 702 iface_ClearFlags(const char *ifname, int flags) 703 { 704 return iface_ChangeFlags(ifname, flags, IFACE_DELFLAGS); 705 } 706 707 void 708 iface_Free(struct iface *iface) 709 { 710 free(iface->name); 711 free(iface->descr); 712 free(iface->addr); 713 free(iface); 714 } 715 716 void 717 iface_Destroy(struct iface *iface) 718 { 719 struct ifreq ifr; 720 int s; 721 722 if (iface != NULL) { 723 if ((s = ID0socket(PF_INET, SOCK_DGRAM, 0)) == -1) { 724 log_Printf(LogERROR, "iface_Destroy: socket(): %s\n", strerror(errno)); 725 } else { 726 strlcpy(ifr.ifr_name, iface->name, sizeof(ifr.ifr_name)); 727 if (ID0ioctl(s, SIOCIFDESTROY, (caddr_t)&ifr) < 0) 728 log_Printf(LogWARN, "iface_Destroy: ioctl(SIOCIFDESTROY, %s): %s\n", 729 iface->name, strerror(errno)); 730 } 731 iface_Free(iface); 732 } 733 } 734 735 #define if_entry(x) { IFF_##x, #x } 736 737 struct { 738 int flag; 739 const char *value; 740 } if_flags[] = { 741 if_entry(UP), 742 if_entry(BROADCAST), 743 if_entry(DEBUG), 744 if_entry(LOOPBACK), 745 if_entry(POINTOPOINT), 746 if_entry(RUNNING), 747 if_entry(NOARP), 748 if_entry(PROMISC), 749 if_entry(ALLMULTI), 750 if_entry(OACTIVE), 751 if_entry(SIMPLEX), 752 if_entry(LINK0), 753 if_entry(LINK1), 754 if_entry(LINK2), 755 if_entry(MULTICAST), 756 { 0, "???" } 757 }; 758 759 int 760 iface_Show(struct cmdargs const *arg) 761 { 762 struct ncpaddr ncpaddr; 763 struct iface *iface = arg->bundle->iface, *current; 764 unsigned f; 765 int flags; 766 #ifndef NOINET6 767 int scopeid, width; 768 #endif 769 struct in_addr mask; 770 771 current = iface_Create(iface->name); 772 flags = iface->flags = current->flags; 773 iface_Free(current); 774 775 prompt_Printf(arg->prompt, "%s (idx %d) <", iface->name, iface->index); 776 for (f = 0; f < sizeof if_flags / sizeof if_flags[0]; f++) 777 if ((if_flags[f].flag & flags)) { 778 prompt_Printf(arg->prompt, "%s%s", flags == iface->flags ? "" : ",", 779 if_flags[f].value); 780 flags &= ~if_flags[f].flag; 781 } 782 783 #if 0 784 if (flags) 785 prompt_Printf(arg->prompt, "%s0x%x", flags == iface->flags ? "" : ",", 786 flags); 787 #endif 788 789 prompt_Printf(arg->prompt, "> mtu %lu has %d address%s:\n", iface->mtu, 790 iface->addrs, iface->addrs == 1 ? "" : "es"); 791 792 for (f = 0; f < iface->addrs; f++) { 793 ncprange_getaddr(&iface->addr[f].ifa, &ncpaddr); 794 switch (ncprange_family(&iface->addr[f].ifa)) { 795 case AF_INET: 796 prompt_Printf(arg->prompt, " inet %s --> ", ncpaddr_ntoa(&ncpaddr)); 797 if (ncpaddr_family(&iface->addr[f].peer) == AF_UNSPEC) 798 prompt_Printf(arg->prompt, "255.255.255.255"); 799 else 800 prompt_Printf(arg->prompt, "%s", ncpaddr_ntoa(&iface->addr[f].peer)); 801 ncprange_getip4mask(&iface->addr[f].ifa, &mask); 802 prompt_Printf(arg->prompt, " netmask 0x%08lx", (long)ntohl(mask.s_addr)); 803 break; 804 805 #ifndef NOINET6 806 case AF_INET6: 807 prompt_Printf(arg->prompt, " inet6 %s", ncpaddr_ntoa(&ncpaddr)); 808 if (ncpaddr_family(&iface->addr[f].peer) != AF_UNSPEC) 809 prompt_Printf(arg->prompt, " --> %s", 810 ncpaddr_ntoa(&iface->addr[f].peer)); 811 ncprange_getwidth(&iface->addr[f].ifa, &width); 812 if (ncpaddr_family(&iface->addr[f].peer) == AF_UNSPEC) 813 prompt_Printf(arg->prompt, " prefixlen %d", width); 814 if ((scopeid = ncprange_scopeid(&iface->addr[f].ifa)) != -1) 815 prompt_Printf(arg->prompt, " scopeid 0x%x", (unsigned)scopeid); 816 break; 817 #endif 818 } 819 prompt_Printf(arg->prompt, "\n"); 820 } 821 822 return 0; 823 } 824 825 void 826 iface_ParseHdr(struct ifa_msghdr *ifam, struct sockaddr *sa[RTAX_MAX]) 827 { 828 char *wp; 829 int rtax; 830 831 wp = (char *)(ifam + 1); 832 833 for (rtax = 0; rtax < RTAX_MAX; rtax++) 834 if (ifam->ifam_addrs & (1 << rtax)) { 835 sa[rtax] = (struct sockaddr *)wp; 836 wp += ROUNDUP(sa[rtax]->sa_len); 837 } else 838 sa[rtax] = NULL; 839 } 840