1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #include <sys/param.h> 32 #include <sys/socket.h> 33 #include <netinet/in.h> 34 #include <net/if.h> 35 #include <net/if_dl.h> 36 #include <net/route.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 <stdarg.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <sys/ioctl.h> 51 #include <sys/sysctl.h> 52 #include <termios.h> 53 #include <unistd.h> 54 55 #include "layer.h" 56 #include "defs.h" 57 #include "command.h" 58 #include "mbuf.h" 59 #include "log.h" 60 #include "id.h" 61 #include "timer.h" 62 #include "fsm.h" 63 #include "iplist.h" 64 #include "lqr.h" 65 #include "hdlc.h" 66 #include "throughput.h" 67 #include "slcompress.h" 68 #include "descriptor.h" 69 #include "ncpaddr.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 #define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 86 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}} 87 static const struct in6_addr in6mask128 = IN6MASK128; 88 89 90 struct iface * 91 iface_Create(const char *name) 92 { 93 int mib[6], maxtries, err; 94 size_t needed, namelen; 95 char *buf, *ptr, *end; 96 struct if_msghdr *ifm; 97 struct ifa_msghdr *ifam; 98 struct sockaddr_dl *dl; 99 struct sockaddr *sa[RTAX_MAX]; 100 struct iface *iface; 101 struct iface_addr *addr; 102 103 mib[0] = CTL_NET; 104 mib[1] = PF_ROUTE; 105 mib[2] = 0; 106 mib[3] = 0; 107 mib[4] = NET_RT_IFLIST; 108 mib[5] = 0; 109 110 maxtries = 20; 111 err = 0; 112 do { 113 if (maxtries-- == 0 || (err && err != ENOMEM)) { 114 fprintf(stderr, "iface_Create: sysctl: %s\n", strerror(err)); 115 return NULL; 116 } 117 118 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 119 fprintf(stderr, "iface_Create: sysctl: estimate: %s\n", 120 strerror(errno)); 121 return NULL; 122 } 123 124 if ((buf = (char *)malloc(needed)) == NULL) { 125 fprintf(stderr, "iface_Create: malloc failed: %s\n", strerror(errno)); 126 return NULL; 127 } 128 129 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 130 err = errno; 131 free(buf); 132 buf = NULL; 133 } 134 } while (buf == NULL); 135 136 ptr = buf; 137 end = buf + needed; 138 iface = NULL; 139 namelen = strlen(name); 140 141 while (ptr < end && iface == NULL) { 142 ifm = (struct if_msghdr *)ptr; /* On if_msghdr */ 143 if (ifm->ifm_type != RTM_IFINFO) 144 break; 145 dl = (struct sockaddr_dl *)(ifm + 1); /* Single _dl at end */ 146 if (dl->sdl_nlen == namelen && !strncmp(name, dl->sdl_data, namelen)) { 147 iface = (struct iface *)malloc(sizeof *iface); 148 if (iface == NULL) { 149 fprintf(stderr, "iface_Create: malloc: %s\n", strerror(errno)); 150 free(buf); 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, saved_errno; 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 saved_errno = errno; 239 if (log_IsKept(LogDEBUG)) { 240 char buf[NCP_ASCIIBUFFERSIZE]; 241 242 snprintf(buf, sizeof buf, "%s", ncprange_ntoa(&addr->ifa)); 243 log_Printf(LogWARN, "%s: DIFADDR %s -> %s returns %d\n", 244 ifra.ifra_name, buf, ncpaddr_ntoa(&addr->peer), res); 245 } 246 break; 247 248 #ifndef NOINET6 249 case AF_INET6: 250 memset(&ifra6, '\0', sizeof ifra6); 251 strncpy(ifra6.ifra_name, name, sizeof ifra6.ifra_name - 1); 252 253 memcpy(&ifra6.ifra_addr, &ssme, sizeof ifra6.ifra_addr); 254 memcpy(&ifra6.ifra_prefixmask, &ssmsk, sizeof ifra6.ifra_prefixmask); 255 ifra6.ifra_prefixmask.sin6_family = AF_UNSPEC; 256 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 257 ifra6.ifra_dstaddr.sin6_family = AF_UNSPEC; 258 else 259 memcpy(&ifra6.ifra_dstaddr, &sspeer, sizeof ifra6.ifra_dstaddr); 260 ifra6.ifra_lifetime.ia6t_vltime = ND6_INFINITE_LIFETIME; 261 ifra6.ifra_lifetime.ia6t_pltime = ND6_INFINITE_LIFETIME; 262 263 res = ID0ioctl(s, SIOCDIFADDR_IN6, &ifra6); 264 saved_errno = errno; 265 break; 266 #endif 267 } 268 269 if (res == -1) { 270 char dst[NCP_ASCIIBUFFERSIZE]; 271 const char *end = 272 #ifndef NOINET6 273 ncprange_family(&addr->ifa) == AF_INET6 ? "_IN6" : 274 #endif 275 ""; 276 277 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 278 log_Printf(LogWARN, "iface rm: ioctl(SIOCDIFADDR%s, %s): %s\n", 279 end, ncprange_ntoa(&addr->ifa), strerror(saved_errno)); 280 else { 281 snprintf(dst, sizeof dst, "%s", ncpaddr_ntoa(&addr->peer)); 282 log_Printf(LogWARN, "iface rm: ioctl(SIOCDIFADDR%s, %s -> %s): %s\n", 283 end, ncprange_ntoa(&addr->ifa), dst, strerror(saved_errno)); 284 } 285 } 286 287 return res != -1; 288 } 289 290 static int 291 iface_addr_Add(const char *name, struct iface_addr *addr, int s) 292 { 293 struct ifaliasreq ifra; 294 #ifndef NOINET6 295 struct in6_aliasreq ifra6; 296 #endif 297 struct sockaddr_in *me4, *msk4, *peer4; 298 struct sockaddr_storage ssme, sspeer, ssmsk; 299 int res, saved_errno; 300 301 ncprange_getsa(&addr->ifa, &ssme, &ssmsk); 302 ncpaddr_getsa(&addr->peer, &sspeer); 303 res = 0; 304 305 switch (ncprange_family(&addr->ifa)) { 306 case AF_INET: 307 memset(&ifra, '\0', sizeof ifra); 308 strncpy(ifra.ifra_name, name, sizeof ifra.ifra_name - 1); 309 310 me4 = (struct sockaddr_in *)&ifra.ifra_addr; 311 memcpy(me4, &ssme, sizeof *me4); 312 313 msk4 = (struct sockaddr_in *)&ifra.ifra_mask; 314 memcpy(msk4, &ssmsk, sizeof *msk4); 315 316 peer4 = (struct sockaddr_in *)&ifra.ifra_broadaddr; 317 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) { 318 peer4->sin_family = AF_INET; 319 peer4->sin_len = sizeof(*peer4); 320 peer4->sin_addr.s_addr = INADDR_NONE; 321 } else 322 memcpy(peer4, &sspeer, sizeof *peer4); 323 324 res = ID0ioctl(s, SIOCAIFADDR, &ifra); 325 saved_errno = errno; 326 if (log_IsKept(LogDEBUG)) { 327 char buf[NCP_ASCIIBUFFERSIZE]; 328 329 snprintf(buf, sizeof buf, "%s", ncprange_ntoa(&addr->ifa)); 330 log_Printf(LogWARN, "%s: AIFADDR %s -> %s returns %d\n", 331 ifra.ifra_name, buf, ncpaddr_ntoa(&addr->peer), res); 332 } 333 break; 334 335 #ifndef NOINET6 336 case AF_INET6: 337 memset(&ifra6, '\0', sizeof ifra6); 338 strncpy(ifra6.ifra_name, name, sizeof ifra6.ifra_name - 1); 339 340 memcpy(&ifra6.ifra_addr, &ssme, sizeof ifra6.ifra_addr); 341 memcpy(&ifra6.ifra_prefixmask, &ssmsk, sizeof ifra6.ifra_prefixmask); 342 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 343 ifra6.ifra_dstaddr.sin6_family = AF_UNSPEC; 344 else if (memcmp(&((struct sockaddr_in6 *)&ssmsk)->sin6_addr, &in6mask128, 345 sizeof in6mask128) == 0) 346 memcpy(&ifra6.ifra_dstaddr, &sspeer, sizeof ifra6.ifra_dstaddr); 347 ifra6.ifra_lifetime.ia6t_vltime = ND6_INFINITE_LIFETIME; 348 ifra6.ifra_lifetime.ia6t_pltime = ND6_INFINITE_LIFETIME; 349 350 res = ID0ioctl(s, SIOCAIFADDR_IN6, &ifra6); 351 saved_errno = errno; 352 break; 353 #endif 354 } 355 356 if (res == -1) { 357 char dst[NCP_ASCIIBUFFERSIZE]; 358 const char *end = 359 #ifndef NOINET6 360 ncprange_family(&addr->ifa) == AF_INET6 ? "_IN6" : 361 #endif 362 ""; 363 364 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 365 log_Printf(LogWARN, "iface add: ioctl(SIOCAIFADDR%s, %s): %s\n", 366 end, ncprange_ntoa(&addr->ifa), strerror(saved_errno)); 367 else { 368 snprintf(dst, sizeof dst, "%s", ncpaddr_ntoa(&addr->peer)); 369 log_Printf(LogWARN, "iface add: ioctl(SIOCAIFADDR%s, %s -> %s): %s\n", 370 end, ncprange_ntoa(&addr->ifa), dst, strerror(saved_errno)); 371 } 372 } 373 374 return res != -1; 375 } 376 377 int 378 iface_Name(struct iface *iface, const char *name) 379 { 380 struct ifreq ifr; 381 int s; 382 char *newname; 383 384 if ((newname = strdup(name)) == NULL) { 385 log_Printf(LogWARN, "iface name: strdup failed: %s\n", strerror(errno)); 386 return 0; 387 } 388 389 if ((s = ID0socket(PF_INET, SOCK_DGRAM, 0)) == -1) { 390 log_Printf(LogERROR, "iface name: socket(): %s\n", strerror(errno)); 391 free(newname); 392 return 0; 393 } 394 395 strlcpy(ifr.ifr_name, iface->name, sizeof(ifr.ifr_name)); 396 ifr.ifr_data = newname; 397 if (ID0ioctl(s, SIOCSIFNAME, (caddr_t)&ifr) < 0) { 398 log_Printf(LogWARN, "iface name: ioctl(SIOCSIFNAME, %s -> %s): %s\n", 399 name, newname, strerror(errno)); 400 free(newname); 401 return 0; 402 } 403 404 free(iface->name); 405 iface->name = newname; 406 407 return 1; 408 } 409 410 int 411 iface_Descr(struct cmdargs const *arg) 412 { 413 struct ifreq ifr; 414 struct iface *iface; 415 size_t sz, len; 416 int s, n, ifdescr_maxlen; 417 char *descr; 418 419 sz = sizeof(int); 420 if (sysctlbyname("net.ifdescr_maxlen", &ifdescr_maxlen, &sz, NULL, 0) < 0) { 421 log_Printf(LogERROR, "iface descr: sysctl failed: %s\n", strerror(errno)); 422 return 1; 423 } 424 425 if (ifdescr_maxlen < 1) { 426 log_Printf(LogERROR, "iface descr: sysctl net.ifdescr_maxlen < 1\n"); 427 return 1; 428 } 429 430 sz = sizeof(char) * ifdescr_maxlen; 431 if ((descr = malloc(sz)) == NULL) { 432 log_Printf(LogERROR, "iface descr: malloc failed: %s\n", strerror(errno)); 433 return 1; 434 } 435 436 *descr = '\0'; 437 n = arg->argn; 438 while (n < arg->argc) { 439 if (n > arg->argn && (len = strlcat(descr, " ", sz)) >= sz) 440 break; 441 if ((len = strlcat(descr, arg->argv[n], sz)) >= sz) 442 break; 443 ++n; 444 } 445 if (len >= sz) { 446 log_Printf(LogERROR, "iface descr: description exceeds maximum (%d)\n", 447 ifdescr_maxlen-1); 448 free(descr); 449 return 1; 450 } 451 452 if ((s = ID0socket(PF_INET, SOCK_DGRAM, 0)) == -1) { 453 log_Printf(LogERROR, "iface descr: socket(): %s\n", strerror(errno)); 454 free(descr); 455 return 1; 456 } 457 458 iface = arg->bundle->iface; 459 strlcpy(ifr.ifr_name, iface->name, sizeof(ifr.ifr_name)); 460 ifr.ifr_buffer.length = strlen(descr) + 1; 461 ifr.ifr_buffer.buffer = descr; 462 if (ID0ioctl(s, SIOCSIFDESCR, (caddr_t)&ifr) < 0) { 463 log_Printf(LogWARN, "iface descr: ioctl(SIOCSIFDESCR, %s): %s\n", 464 descr, strerror(errno)); 465 free(descr); 466 return 1; 467 } 468 469 free(iface->descr); 470 iface->descr = descr; 471 472 return 0; 473 } 474 475 void 476 iface_Clear(struct iface *iface, struct ncp *ncp, int family, int how) 477 { 478 int af, inskip, in6skip, s4 = -1, s6 = -1, *s; 479 unsigned n; 480 481 if (iface->addrs) { 482 inskip = in6skip = how == IFACE_CLEAR_ALL ? 0 : 1; 483 484 for (n = 0; n < iface->addrs; n++) { 485 af = ncprange_family(&iface->addr[n].ifa); 486 if (family == 0 || family == af) { 487 if (!iface->addr[n].system && (how & IFACE_SYSTEM)) 488 continue; 489 switch (af) { 490 case AF_INET: 491 if (inskip) { 492 inskip = 0; 493 continue; 494 } 495 s = &s4; 496 break; 497 498 #ifndef NOINET6 499 case AF_INET6: 500 if (in6skip) { 501 in6skip = 0; 502 continue; 503 } 504 s = &s6; 505 break; 506 #endif 507 default: 508 continue; 509 } 510 511 if (*s == -1 && (*s = ID0socket(af, SOCK_DGRAM, 0)) == -1) 512 log_Printf(LogERROR, "iface_Clear: socket(): %s\n", strerror(errno)); 513 else if (iface_addr_Zap(iface->name, iface->addr + n, *s)) { 514 ncp_IfaceAddrDeleted(ncp, iface->addr + n); 515 bcopy(iface->addr + n + 1, iface->addr + n, 516 (iface->addrs - n - 1) * sizeof *iface->addr); 517 iface->addrs--; 518 n--; 519 } 520 } 521 } 522 523 /* Don't bother realloc()ing - we have little to gain */ 524 525 if (s4) 526 close(s4); 527 if (s6) 528 close(s6); 529 } 530 } 531 532 int 533 iface_Add(struct iface *iface, struct ncp *ncp, const struct ncprange *ifa, 534 const struct ncpaddr *peer, int how) 535 { 536 int af, removed, s; 537 unsigned n; 538 struct ncpaddr ncplocal; 539 struct iface_addr *addr, newaddr; 540 541 af = ncprange_family(ifa); 542 if ((s = ID0socket(af, SOCK_DGRAM, 0)) == -1) { 543 log_Printf(LogERROR, "iface_Add: socket(): %s\n", strerror(errno)); 544 return 0; 545 } 546 ncprange_getaddr(ifa, &ncplocal); 547 548 for (n = 0; n < iface->addrs; n++) { 549 if (ncprange_contains(&iface->addr[n].ifa, &ncplocal) || 550 ncpaddr_equal(&iface->addr[n].peer, peer)) { 551 /* Replace this sockaddr */ 552 if (!(how & IFACE_FORCE_ADD)) { 553 close(s); 554 return 0; /* errno = EEXIST; */ 555 } 556 557 if (ncprange_equal(&iface->addr[n].ifa, ifa) && 558 ncpaddr_equal(&iface->addr[n].peer, peer)) { 559 close(s); 560 ncp_IfaceAddrAdded(ncp, iface->addr + n); 561 return 1; /* Already there */ 562 } 563 564 removed = iface_addr_Zap(iface->name, iface->addr + n, s); 565 if (removed) 566 ncp_IfaceAddrDeleted(ncp, iface->addr + n); 567 ncprange_copy(&iface->addr[n].ifa, ifa); 568 ncpaddr_copy(&iface->addr[n].peer, peer); 569 if (!iface_addr_Add(iface->name, iface->addr + n, s)) { 570 if (removed) { 571 bcopy(iface->addr + n + 1, iface->addr + n, 572 (iface->addrs - n - 1) * sizeof *iface->addr); 573 iface->addrs--; 574 n--; 575 } 576 close(s); 577 return 0; 578 } 579 close(s); 580 ncp_IfaceAddrAdded(ncp, iface->addr + n); 581 return 1; 582 } 583 } 584 585 addr = (struct iface_addr *)realloc 586 (iface->addr, (iface->addrs + 1) * sizeof iface->addr[0]); 587 if (addr == NULL) { 588 log_Printf(LogERROR, "iface_inAdd: realloc: %s\n", strerror(errno)); 589 close(s); 590 return 0; 591 } 592 iface->addr = addr; 593 594 ncprange_copy(&newaddr.ifa, ifa); 595 ncpaddr_copy(&newaddr.peer, peer); 596 newaddr.system = !!(how & IFACE_SYSTEM); 597 if (!iface_addr_Add(iface->name, &newaddr, s)) { 598 close(s); 599 return 0; 600 } 601 602 if (how & IFACE_ADD_FIRST) { 603 /* Stuff it at the start of our list */ 604 n = 0; 605 bcopy(iface->addr, iface->addr + 1, iface->addrs * sizeof *iface->addr); 606 } else 607 n = iface->addrs; 608 609 iface->addrs++; 610 memcpy(iface->addr + n, &newaddr, sizeof(*iface->addr)); 611 612 close(s); 613 ncp_IfaceAddrAdded(ncp, iface->addr + n); 614 615 return 1; 616 } 617 618 int 619 iface_Delete(struct iface *iface, struct ncp *ncp, const struct ncpaddr *del) 620 { 621 struct ncpaddr found; 622 unsigned n; 623 int res, s; 624 625 if ((s = ID0socket(ncpaddr_family(del), SOCK_DGRAM, 0)) == -1) { 626 log_Printf(LogERROR, "iface_Delete: socket(): %s\n", strerror(errno)); 627 return 0; 628 } 629 630 for (n = res = 0; n < iface->addrs; n++) { 631 ncprange_getaddr(&iface->addr[n].ifa, &found); 632 if (ncpaddr_equal(&found, del)) { 633 if (iface_addr_Zap(iface->name, iface->addr + n, s)) { 634 ncp_IfaceAddrDeleted(ncp, iface->addr + n); 635 bcopy(iface->addr + n + 1, iface->addr + n, 636 (iface->addrs - n - 1) * sizeof *iface->addr); 637 iface->addrs--; 638 res = 1; 639 } 640 break; 641 } 642 } 643 644 close(s); 645 646 return res; 647 } 648 649 #define IFACE_ADDFLAGS 1 650 #define IFACE_DELFLAGS 2 651 652 static int 653 iface_ChangeFlags(const char *ifname, int flags, int how) 654 { 655 struct ifreq ifrq; 656 int s, new_flags; 657 658 s = ID0socket(PF_INET, SOCK_DGRAM, 0); 659 if (s < 0) { 660 log_Printf(LogERROR, "iface_ChangeFlags: socket: %s\n", strerror(errno)); 661 return 0; 662 } 663 664 memset(&ifrq, '\0', sizeof ifrq); 665 strncpy(ifrq.ifr_name, ifname, sizeof ifrq.ifr_name - 1); 666 ifrq.ifr_name[sizeof ifrq.ifr_name - 1] = '\0'; 667 if (ID0ioctl(s, SIOCGIFFLAGS, &ifrq) < 0) { 668 log_Printf(LogERROR, "iface_ChangeFlags: ioctl(SIOCGIFFLAGS): %s\n", 669 strerror(errno)); 670 close(s); 671 return 0; 672 } 673 #ifdef __FreeBSD__ 674 new_flags = (ifrq.ifr_flags & 0xffff) | (ifrq.ifr_flagshigh << 16); 675 #else 676 new_flags = ifrq.ifr_flags & 0xffff; 677 #endif 678 679 if (how == IFACE_ADDFLAGS) 680 new_flags |= flags; 681 else 682 new_flags &= ~flags; 683 ifrq.ifr_flags = new_flags & 0xffff; 684 #ifdef __FreeBSD__ 685 ifrq.ifr_flagshigh = new_flags >> 16; 686 #endif 687 688 if (ID0ioctl(s, SIOCSIFFLAGS, &ifrq) < 0) { 689 log_Printf(LogERROR, "iface_ChangeFlags: ioctl(SIOCSIFFLAGS): %s\n", 690 strerror(errno)); 691 close(s); 692 return 0; 693 } 694 close(s); 695 696 return 1; /* Success */ 697 } 698 699 int 700 iface_SetFlags(const char *ifname, int flags) 701 { 702 return iface_ChangeFlags(ifname, flags, IFACE_ADDFLAGS); 703 } 704 705 int 706 iface_ClearFlags(const char *ifname, int flags) 707 { 708 return iface_ChangeFlags(ifname, flags, IFACE_DELFLAGS); 709 } 710 711 void 712 iface_Free(struct iface *iface) 713 { 714 free(iface->name); 715 free(iface->descr); 716 free(iface->addr); 717 free(iface); 718 } 719 720 void 721 iface_Destroy(struct iface *iface) 722 { 723 struct ifreq ifr; 724 int s; 725 726 if (iface != NULL) { 727 if ((s = ID0socket(PF_INET, SOCK_DGRAM, 0)) == -1) { 728 log_Printf(LogERROR, "iface_Destroy: socket(): %s\n", strerror(errno)); 729 } else { 730 strlcpy(ifr.ifr_name, iface->name, sizeof(ifr.ifr_name)); 731 if (ID0ioctl(s, SIOCIFDESTROY, (caddr_t)&ifr) < 0) 732 log_Printf(LogWARN, "iface_Destroy: ioctl(SIOCIFDESTROY, %s): %s\n", 733 iface->name, strerror(errno)); 734 } 735 iface_Free(iface); 736 } 737 } 738 739 #define if_entry(x) { IFF_##x, #x } 740 741 struct { 742 int flag; 743 const char *value; 744 } if_flags[] = { 745 if_entry(UP), 746 if_entry(BROADCAST), 747 if_entry(DEBUG), 748 if_entry(LOOPBACK), 749 if_entry(POINTOPOINT), 750 if_entry(RUNNING), 751 if_entry(NOARP), 752 if_entry(PROMISC), 753 if_entry(ALLMULTI), 754 if_entry(OACTIVE), 755 if_entry(SIMPLEX), 756 if_entry(LINK0), 757 if_entry(LINK1), 758 if_entry(LINK2), 759 if_entry(MULTICAST), 760 { 0, "???" } 761 }; 762 763 int 764 iface_Show(struct cmdargs const *arg) 765 { 766 struct ncpaddr ncpaddr; 767 struct iface *iface = arg->bundle->iface, *current; 768 unsigned f; 769 int flags; 770 #ifndef NOINET6 771 int scopeid, width; 772 #endif 773 struct in_addr mask; 774 775 current = iface_Create(iface->name); 776 flags = iface->flags = current->flags; 777 iface_Free(current); 778 779 prompt_Printf(arg->prompt, "%s (idx %d) <", iface->name, iface->index); 780 for (f = 0; f < sizeof if_flags / sizeof if_flags[0]; f++) 781 if ((if_flags[f].flag & flags)) { 782 prompt_Printf(arg->prompt, "%s%s", flags == iface->flags ? "" : ",", 783 if_flags[f].value); 784 flags &= ~if_flags[f].flag; 785 } 786 787 #if 0 788 if (flags) 789 prompt_Printf(arg->prompt, "%s0x%x", flags == iface->flags ? "" : ",", 790 flags); 791 #endif 792 793 prompt_Printf(arg->prompt, "> mtu %lu has %d address%s:\n", iface->mtu, 794 iface->addrs, iface->addrs == 1 ? "" : "es"); 795 796 for (f = 0; f < iface->addrs; f++) { 797 ncprange_getaddr(&iface->addr[f].ifa, &ncpaddr); 798 switch (ncprange_family(&iface->addr[f].ifa)) { 799 case AF_INET: 800 prompt_Printf(arg->prompt, " inet %s --> ", ncpaddr_ntoa(&ncpaddr)); 801 if (ncpaddr_family(&iface->addr[f].peer) == AF_UNSPEC) 802 prompt_Printf(arg->prompt, "255.255.255.255"); 803 else 804 prompt_Printf(arg->prompt, "%s", ncpaddr_ntoa(&iface->addr[f].peer)); 805 ncprange_getip4mask(&iface->addr[f].ifa, &mask); 806 prompt_Printf(arg->prompt, " netmask 0x%08lx", (long)ntohl(mask.s_addr)); 807 break; 808 809 #ifndef NOINET6 810 case AF_INET6: 811 prompt_Printf(arg->prompt, " inet6 %s", ncpaddr_ntoa(&ncpaddr)); 812 if (ncpaddr_family(&iface->addr[f].peer) != AF_UNSPEC) 813 prompt_Printf(arg->prompt, " --> %s", 814 ncpaddr_ntoa(&iface->addr[f].peer)); 815 ncprange_getwidth(&iface->addr[f].ifa, &width); 816 if (ncpaddr_family(&iface->addr[f].peer) == AF_UNSPEC) 817 prompt_Printf(arg->prompt, " prefixlen %d", width); 818 if ((scopeid = ncprange_scopeid(&iface->addr[f].ifa)) != -1) 819 prompt_Printf(arg->prompt, " scopeid 0x%x", (unsigned)scopeid); 820 break; 821 #endif 822 } 823 prompt_Printf(arg->prompt, "\n"); 824 } 825 826 return 0; 827 } 828 829 void 830 iface_ParseHdr(struct ifa_msghdr *ifam, struct sockaddr *sa[RTAX_MAX]) 831 { 832 char *wp; 833 int rtax; 834 835 wp = (char *)(ifam + 1); 836 837 for (rtax = 0; rtax < RTAX_MAX; rtax++) 838 if (ifam->ifam_addrs & (1 << rtax)) { 839 sa[rtax] = (struct sockaddr *)wp; 840 wp += ROUNDUP(sa[rtax]->sa_len); 841 } else 842 sa[rtax] = NULL; 843 } 844