1 /* $FreeBSD: src/usr.sbin/gifconfig/gifconfig.c,v 1.2.2.4 2002/08/30 14:23:39 sobomax Exp $ */ 2 /* $DragonFly: src/usr.sbin/gifconfig/gifconfig.c,v 1.6 2004/03/24 18:23:46 cpressey Exp $ */ 3 /* $KAME: gifconfig.c,v 1.14 2001/01/01 04:04:56 jinmei Exp $ */ 4 5 /* 6 * Copyright (c) 1983, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 */ 37 38 /* 39 * gifconfig, derived from ifconfig 40 * 41 * @(#) Copyright (c) 1983, 1993\n\ 42 * The Regents of the University of California. All rights reserved.\n 43 * 44 * @(#)ifconfig.c 8.2 (Berkeley) 2/16/94 45 */ 46 47 /* 48 * 951109 - Andrew@pubnix.net - Changed to iterative buffer growing mechanism 49 * for ifconfig -a so all interfaces are queried. 50 * 51 * 960101 - peter@freebsd.org - Blow away the SIOCGIFCONF code and use 52 * sysctl() to get the structured interface conf 53 * and parse the messages in there. REALLY UGLY! 54 */ 55 56 #include <sys/param.h> 57 #include <sys/socket.h> 58 #include <sys/ioctl.h> 59 #include <sys/sysctl.h> 60 61 #include <net/if.h> 62 #if defined(__DragonFly__) 63 #include <net/if_var.h> 64 #endif /* __DragonFly__ */ 65 #include <net/if_dl.h> 66 #include <net/if_types.h> 67 #include <net/route.h> 68 #include <netinet/in.h> 69 #include <netinet/in_var.h> 70 #include <arpa/inet.h> 71 #include <netdb.h> 72 73 #include <sys/protosw.h> 74 75 #include <ctype.h> 76 #include <err.h> 77 #include <errno.h> 78 #include <stdio.h> 79 #include <stdlib.h> 80 #include <string.h> 81 #include <unistd.h> 82 #include <nlist.h> 83 #include <kvm.h> 84 #include <fcntl.h> 85 86 struct ifreq ifr; 87 struct ifaliasreq addreq; 88 #ifdef INET6 89 struct in6_ifreq in6_ifr; 90 struct in6_aliasreq in6_addreq; 91 #endif 92 93 char name[32]; 94 int flags; 95 int metric; 96 int mtu; 97 int setpsrc = 0; 98 int newaddr = 0; 99 int s; 100 kvm_t *kvmd; 101 102 #ifdef INET6 103 char ntop_buf[INET6_ADDRSTRLEN]; /*inet_ntop()*/ 104 #endif 105 106 void setifpsrc(char *, int); 107 void setifpdst(char *, int); 108 void setifflags(char *, int); 109 #ifdef SIOCDIFPHYADDR 110 void delifaddrs(char *, int); 111 #endif 112 113 #define NEXTARG 0xffffff 114 115 static struct cmd { 116 char *c_name; 117 int c_parameter; /* NEXTARG means next argv */ 118 void (*c_func)(char *, int); 119 } cmds[] = { 120 { "up", IFF_UP, setifflags } , 121 { "down", -IFF_UP, setifflags }, 122 #ifdef SIOCDIFPHYADDR 123 { "delete", 0, delifaddrs }, 124 #endif 125 { 0, 0, setifpsrc }, 126 { 0, 0, setifpdst }, 127 }; 128 129 /* 130 * XNS support liberally adapted from code written at the University of 131 * Maryland principally by James O'Toole and Chris Torek. 132 */ 133 int main(int, char *[]); 134 void status(void); 135 void phys_status(int); 136 void in_status(int); 137 #ifdef INET6 138 void in6_status(int); 139 #endif 140 void ether_status(int); 141 void Perror(char *); 142 void in_getaddr(char *, int); 143 #ifdef INET6 144 void in6_getaddr(char *, int); 145 void in6_getprefix(char *, int); 146 #endif 147 void printb(char *, unsigned int, char *); 148 int prefix(void *, int); 149 150 char ntop_buf[INET6_ADDRSTRLEN]; 151 152 /* Known address families */ 153 struct afswtch { 154 char *af_name; 155 short af_af; 156 void (*af_status)(int); 157 void (*af_getaddr)(char *, int); 158 void (*af_getprefix)(char *, int); 159 u_long af_pifaddr; 160 caddr_t af_addreq; 161 caddr_t af_req; 162 } afs[] = { 163 #define C(x) ((caddr_t) &x) 164 { "inet", AF_INET, in_status, in_getaddr, 0, 165 SIOCSIFPHYADDR, C(addreq), C(ifr) }, 166 #ifdef INET6 167 { "inet6", AF_INET6, in6_status, in6_getaddr, in6_getprefix, 168 SIOCSIFPHYADDR_IN6, C(in6_addreq), C(in6_ifr) }, 169 #endif 170 { "ether", AF_INET, ether_status, NULL, NULL }, /* XXX not real!! */ 171 { 0, 0, 0, 0, 0 } 172 }; 173 174 struct afswtch *afp = NULL; /*the address family being set or asked about*/ 175 176 void rt_xaddrs(caddr_t, caddr_t, struct rt_addrinfo *); 177 int ifconfig(int argc, char *argv[], int af, struct afswtch *rafp); 178 179 180 181 /* 182 * Expand the compacted form of addresses as returned via the 183 * configuration read via sysctl(). 184 */ 185 186 #define ROUNDUP(a) \ 187 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 188 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 189 190 void 191 rt_xaddrs(caddr_t cp, caddr_t cplim, struct rt_addrinfo *rtinfo) 192 { 193 struct sockaddr *sa; 194 int i; 195 196 memset(rtinfo->rti_info, 0, sizeof(rtinfo->rti_info)); 197 for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) { 198 if ((rtinfo->rti_addrs & (1 << i)) == 0) 199 continue; 200 rtinfo->rti_info[i] = sa = (struct sockaddr *)cp; 201 ADVANCE(cp, sa); 202 } 203 } 204 205 206 /* 207 * Grunge for new-style sysctl() decoding.. :-( 208 * Apologies to the world for committing gross things like this in 1996.. 209 */ 210 struct if_msghdr *ifm; 211 struct ifa_msghdr *ifam; 212 struct sockaddr_dl *sdl; 213 struct rt_addrinfo info; 214 char *buf, *lim, *next; 215 216 217 int 218 main(int argc, char **argv) 219 { 220 int af = AF_INET; 221 struct afswtch *rafp = NULL; 222 size_t needed; 223 int mib[6]; 224 int all; 225 226 if (argc < 2) { 227 fprintf(stderr, 228 "usage: gifconfig interface [af] [physsrc physdst]\n"); 229 #ifdef SIOCDIFPHYADDR 230 fprintf(stderr, 231 " gifconfig interface delete\n"); 232 #endif 233 fprintf(stderr, 234 " gifconfig -a\n"); 235 exit(1); 236 } 237 argc--, argv++; 238 strncpy(name, *argv, sizeof(name)); 239 strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); 240 argc--, argv++; 241 if (argc > 0) { 242 for (afp = rafp = afs; rafp->af_name; rafp++) 243 if (strcmp(rafp->af_name, *argv) == 0) { 244 afp = rafp; argc--; argv++; 245 break; 246 } 247 rafp = afp; 248 af = ifr.ifr_addr.sa_family = rafp->af_af; 249 } 250 251 mib[0] = CTL_NET; 252 mib[1] = PF_ROUTE; 253 mib[2] = 0; 254 mib[3] = 0; /* address family */ 255 mib[4] = NET_RT_IFLIST; 256 mib[5] = 0; 257 258 /* if particular family specified, only ask about it */ 259 if (afp) { 260 mib[3] = afp->af_af; 261 } 262 263 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 264 errx(1, "iflist-sysctl-estimate"); 265 if ((buf = malloc(needed)) == NULL) 266 errx(1, "malloc"); 267 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 268 errx(1, "actual retrieval of interface table"); 269 lim = buf + needed; 270 271 all = 0; 272 if (strcmp(name, "-a") == 0) 273 all = 1; /* All interfaces */ 274 else if (strcmp(name, "-au") == 0) 275 all = 2; /* All IFF_UPinterfaces */ 276 else if (strcmp(name, "-ad") == 0) 277 all = 3; /* All !IFF_UP interfaces */ 278 279 for (next = buf; next < lim; next += ifm->ifm_msglen) { 280 281 ifm = (struct if_msghdr *)next; 282 283 /* XXX: Swallow up leftover NEWADDR messages */ 284 if (ifm->ifm_type == RTM_NEWADDR) 285 continue; 286 287 if (ifm->ifm_type == RTM_IFINFO) { 288 sdl = (struct sockaddr_dl *)(ifm + 1); 289 flags = ifm->ifm_flags; 290 } else { 291 errx(1, "out of sync parsing NET_RT_IFLIST"); 292 } 293 294 switch(all) { 295 case -1: 296 case 0: 297 if (strlen(name) != sdl->sdl_nlen) 298 continue; /* not same len */ 299 if (strncmp(name, sdl->sdl_data, sdl->sdl_nlen) != 0) 300 continue; /* not same name */ 301 break; 302 case 1: 303 break; /* always do it */ 304 case 2: 305 if ((flags & IFF_UP) == 0) 306 continue; /* not up */ 307 break; 308 case 3: 309 if (flags & IFF_UP) 310 continue; /* not down */ 311 break; 312 } 313 314 /* 315 * Let's just do it for gif only 316 */ 317 if (sdl->sdl_type != IFT_GIF) { 318 if (all != 0) 319 continue; 320 321 fprintf(stderr, "gifconfig: %s is not gif.\n", 322 ifr.ifr_name); 323 exit(1); 324 } 325 326 if (all > 0) { 327 strncpy(name, sdl->sdl_data, sdl->sdl_nlen); 328 name[sdl->sdl_nlen] = '\0'; 329 } 330 331 if ((s = socket(af, SOCK_DGRAM, 0)) < 0) { 332 perror("gifconfig: socket"); 333 exit(1); 334 } 335 336 ifconfig(argc,argv,af,rafp); 337 338 close(s); 339 340 if (all == 0) { 341 all = -1; /* flag it as 'done' */ 342 break; 343 } 344 } 345 free(buf); 346 347 if (all == 0) 348 errx(1, "interface %s does not exist", name); 349 350 351 exit (0); 352 } 353 354 355 int 356 ifconfig(int argc, char **argv, int af, struct afswtch *rafp) 357 { 358 359 af = 0; /*fool gcc*/ 360 361 strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name); 362 #ifdef INET6 363 strncpy(in6_ifr.ifr_name, name, sizeof in6_ifr.ifr_name); 364 #endif /* INET6 */ 365 366 if (ioctl(s, SIOCGIFMETRIC, (caddr_t)&ifr) < 0) 367 perror("ioctl (SIOCGIFMETRIC)"); 368 else 369 metric = ifr.ifr_metric; 370 371 #if defined(SIOCGIFMTU) && !defined(__OpenBSD__) 372 if (ioctl(s, SIOCGIFMTU, (caddr_t)&ifr) < 0) 373 perror("ioctl (SIOCGIFMTU)"); 374 else 375 mtu = ifr.ifr_mtu; 376 #else 377 mtu = 0; 378 #endif 379 380 if (argc == 0) { 381 status(); 382 return(0); 383 } 384 385 while (argc > 0) { 386 struct cmd *p; 387 388 for (p = cmds; p->c_name; p++) 389 if (strcmp(*argv, p->c_name) == 0) 390 break; 391 if (p->c_name == 0 && setpsrc) 392 p++; /* got src, do dst */ 393 if (p->c_func) { 394 if (p->c_parameter == NEXTARG) { 395 if (argv[1] == NULL) 396 errx(1, "'%s' requires argument", 397 p->c_name); 398 (*p->c_func)(argv[1], 0); 399 argc--, argv++; 400 } else 401 (*p->c_func)(*argv, p->c_parameter); 402 } 403 argc--, argv++; 404 } 405 if (newaddr) { 406 strncpy(rafp->af_addreq, name, sizeof ifr.ifr_name); 407 if (ioctl(s, rafp->af_pifaddr, rafp->af_addreq) < 0) 408 Perror("ioctl (SIOCSIFPHYADDR)"); 409 } 410 else if (setpsrc) { 411 errx(1, "destination is not specified"); 412 } 413 return(0); 414 } 415 #define PSRC 0 416 #define PDST 1 417 418 /*ARGSUSED*/ 419 void 420 setifpsrc(char *addr, int param) 421 { 422 param = 0; /*fool gcc*/ 423 (*afp->af_getaddr)(addr, PSRC); 424 setpsrc = 1; 425 } 426 427 /*ARGSUSED*/ 428 void 429 setifpdst(char *addr, int param) 430 { 431 param = 0; /*fool gcc*/ 432 (*afp->af_getaddr)(addr, PDST); 433 newaddr = 1; 434 } 435 436 void 437 setifflags(char *vname, int value) 438 { 439 if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) { 440 Perror("ioctl (SIOCGIFFLAGS)"); 441 exit(1); 442 } 443 strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 444 flags = (ifr.ifr_flags & 0xffff) | (ifr.ifr_flagshigh << 16); 445 446 if (value < 0) { 447 value = -value; 448 flags &= ~value; 449 } else 450 flags |= value; 451 ifr.ifr_flags = flags & 0xffff; 452 ifr.ifr_flagshigh = flags >> 16; 453 if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) 454 Perror(vname); 455 } 456 457 #ifdef SIOCDIFPHYADDR 458 /* ARGSUSED */ 459 void 460 delifaddrs(char *vname, int param) 461 { 462 param = 0; /* fool gcc */ 463 vname = NULL; /* ditto */ 464 465 if (ioctl(s, SIOCDIFPHYADDR, (caddr_t)&ifr) < 0) 466 err(1, "ioctl(SIOCDIFPHYADDR)"); 467 } 468 #endif 469 470 #define IFFBITS \ 471 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6NOTRAILERS\7RUNNING\10NOARP\ 472 \11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2\20MULTICAST" 473 474 /* 475 * Print the status of the interface. If an address family was 476 * specified, show it and it only; otherwise, show them all. 477 */ 478 void 479 status(void) 480 { 481 struct afswtch *p = NULL; 482 char *mynext; 483 struct if_msghdr *myifm; 484 485 printf("%s: ", name); 486 printb("flags", flags, IFFBITS); 487 if (metric) 488 printf(" metric %d", metric); 489 if (mtu) 490 printf(" mtu %d", mtu); 491 putchar('\n'); 492 493 /* 494 * XXX: Sigh. This is bad, I know. At this point, we may have 495 * *zero* RTM_NEWADDR's, so we have to "feel the water" before 496 * incrementing the loop. One day, I might feel inspired enough 497 * to get the top level loop to pass a count down here so we 498 * dont have to mess with this. -Peter 499 */ 500 myifm = ifm; 501 502 while (1) { 503 504 mynext = next + ifm->ifm_msglen; 505 506 if (mynext >= lim) 507 break; 508 509 myifm = (struct if_msghdr *)mynext; 510 511 if (myifm->ifm_type != RTM_NEWADDR) 512 break; 513 514 next = mynext; 515 516 ifm = (struct if_msghdr *)next; 517 518 ifam = (struct ifa_msghdr *)myifm; 519 info.rti_addrs = ifam->ifam_addrs; 520 521 /* Expand the compacted addresses */ 522 rt_xaddrs((char *)(ifam + 1), ifam->ifam_msglen + (char *)ifam, 523 &info); 524 525 if (afp) { 526 if (afp->af_af == info.rti_info[RTAX_IFA]->sa_family && 527 afp->af_status != ether_status) { 528 p = afp; 529 if (p->af_status != ether_status) 530 (*p->af_status)(1); 531 } 532 } else for (p = afs; p->af_name; p++) { 533 if (p->af_af == info.rti_info[RTAX_IFA]->sa_family && 534 p->af_status != ether_status) 535 (*p->af_status)(0); 536 } 537 } 538 if (afp == NULL || afp->af_status == ether_status) 539 ether_status(0); 540 else if (afp && !p) { 541 warnx("%s has no %s IFA address!", name, afp->af_name); 542 } 543 544 phys_status(0); 545 } 546 547 void 548 phys_status(int force) 549 { 550 char psrcaddr[256]; 551 char pdstaddr[256]; 552 int flags = NI_NUMERICHOST; 553 char *af; 554 #ifndef SIOCGLIFPHYADDR 555 u_long srccmd, dstcmd; 556 struct ifreq *ifrp; 557 #ifdef INET6 558 int s6; 559 #endif 560 561 force = 0; /*fool gcc*/ 562 563 psrcaddr[0] = pdstaddr[0] = '\0'; 564 565 #ifdef INET6 566 s6 = socket(AF_INET6, SOCK_DGRAM, 0); 567 if (s6 < 0) { 568 ifrp = 𝔦 569 srccmd = SIOCGIFPSRCADDR; 570 dstcmd = SIOCGIFPDSTADDR; 571 } else { 572 close(s6); 573 srccmd = SIOCGIFPSRCADDR_IN6; 574 dstcmd = SIOCGIFPDSTADDR_IN6; 575 ifrp = (struct ifreq *)&in6_ifr; 576 } 577 #else /* INET6 */ 578 ifrp = 𝔦 579 srccmd = SIOCGIFPSRCADDR; 580 dstcmd = SIOCGIFPDSTADDR; 581 #endif /* INET6 */ 582 583 if (0 <= ioctl(s, srccmd, (caddr_t)ifrp)) { 584 #ifdef INET6 585 if (ifrp->ifr_addr.sa_family == AF_INET6) 586 af = "inet6"; 587 else 588 af = "inet"; 589 #else 590 af = "inet"; 591 #endif /* INET6 */ 592 if (getnameinfo(&ifrp->ifr_addr, ifrp->ifr_addr.sa_len, 593 psrcaddr, sizeof(psrcaddr), 0, 0, flags) != 0) 594 psrcaddr[0] = '\0'; 595 } 596 if (0 <= ioctl(s, dstcmd, (caddr_t)ifrp)) { 597 if (getnameinfo(&ifrp->ifr_addr, ifrp->ifr_addr.sa_len, 598 pdstaddr, sizeof(pdstaddr), 0, 0, flags) != 0) 599 pdstaddr[0] = '\0'; 600 } 601 printf("\tphysical address %s %s --> %s\n", af, psrcaddr, pdstaddr); 602 #else 603 struct if_laddrreq iflr; 604 605 force = 0; /*fool gcc*/ 606 607 psrcaddr[0] = pdstaddr[0] = '\0'; 608 609 memset(&iflr, 0, sizeof(iflr)); 610 memcpy(iflr.iflr_name, ifr.ifr_name, sizeof(iflr.iflr_name)); 611 612 if (0 <= ioctl(s, SIOCGLIFPHYADDR, (caddr_t)&iflr)) { 613 switch (iflr.addr.ss_family) { 614 case AF_INET: 615 af = "inet"; 616 break; 617 #ifdef INET6 618 case AF_INET6: 619 af = "inet6"; 620 break; 621 #endif /* INET6 */ 622 } 623 if (getnameinfo((struct sockaddr *)&iflr.addr, iflr.addr.ss_len, 624 psrcaddr, sizeof(psrcaddr), 0, 0, flags) != 0) 625 psrcaddr[0] = '\0'; 626 if (getnameinfo((struct sockaddr *)&iflr.dstaddr, 627 iflr.dstaddr.ss_len, pdstaddr, sizeof(pdstaddr), 0, 0, 628 flags) != 0) 629 pdstaddr[0] = '\0'; 630 } 631 printf("\tphysical address %s %s --> %s\n", af, psrcaddr, pdstaddr); 632 #endif 633 } 634 635 void 636 in_status(int force) 637 { 638 struct sockaddr_in *sin, null_sin; 639 #if 0 640 char *inet_ntoa(); 641 #endif 642 643 memset(&null_sin, 0, sizeof(null_sin)); 644 645 sin = (struct sockaddr_in *)info.rti_info[RTAX_IFA]; 646 if (!sin || sin->sin_family != AF_INET) { 647 if (!force) 648 return; 649 /* warnx("%s has no AF_INET IFA address!", name); */ 650 sin = &null_sin; 651 } 652 printf("\tinet %s ", inet_ntoa(sin->sin_addr)); 653 654 if (flags & IFF_POINTOPOINT) { 655 /* note RTAX_BRD overlap with IFF_BROADCAST */ 656 sin = (struct sockaddr_in *)info.rti_info[RTAX_BRD]; 657 if (!sin) 658 sin = &null_sin; 659 printf("--> %s ", inet_ntoa(sin->sin_addr)); 660 } 661 662 sin = (struct sockaddr_in *)info.rti_info[RTAX_NETMASK]; 663 if (!sin) 664 sin = &null_sin; 665 printf("netmask 0x%x ", (u_int32_t)ntohl(sin->sin_addr.s_addr)); 666 667 if (flags & IFF_BROADCAST) { 668 /* note RTAX_BRD overlap with IFF_POINTOPOINT */ 669 sin = (struct sockaddr_in *)info.rti_info[RTAX_BRD]; 670 if (sin && sin->sin_addr.s_addr != 0) 671 printf("broadcast %s", inet_ntoa(sin->sin_addr)); 672 } 673 putchar('\n'); 674 } 675 676 #ifdef INET6 677 void 678 in6_status(int force) 679 { 680 struct sockaddr_in6 *sin, null_sin; 681 char hostname[NI_MAXHOST]; 682 int niflags = NI_NUMERICHOST; 683 684 memset(&null_sin, 0, sizeof(null_sin)); 685 #ifdef NI_WITHSCOPEID 686 niflags |= NI_WITHSCOPEID; 687 #endif 688 689 sin = (struct sockaddr_in6 *)info.rti_info[RTAX_IFA]; 690 if (!sin || sin->sin6_family != AF_INET6) { 691 if (!force) 692 return; 693 /* warnx("%s has no AF_INET6 IFA address!", name); */ 694 sin = &null_sin; 695 } 696 #ifdef __KAME__ 697 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 698 sin->sin6_scope_id = 699 ntohs(*(u_int16_t *)&sin->sin6_addr.s6_addr[2]); 700 sin->sin6_addr.s6_addr[2] = 0; 701 sin->sin6_addr.s6_addr[3] = 0; 702 } 703 #endif 704 getnameinfo((struct sockaddr *)sin, sin->sin6_len, 705 hostname, sizeof(hostname), 0, 0, niflags); 706 printf("\tinet6 %s ", hostname); 707 708 if (flags & IFF_POINTOPOINT) { 709 /* note RTAX_BRD overlap with IFF_BROADCAST */ 710 sin = (struct sockaddr_in6 *)info.rti_info[RTAX_BRD]; 711 /* 712 * some of ther interfaces do not have valid destination 713 * address. 714 */ 715 if (sin->sin6_family == AF_INET6) { 716 #ifdef __KAME__ 717 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 718 sin->sin6_scope_id = 719 ntohs(*(u_int16_t *)&sin->sin6_addr.s6_addr[2]); 720 sin->sin6_addr.s6_addr[2] = 0; 721 sin->sin6_addr.s6_addr[3] = 0; 722 } 723 #endif 724 getnameinfo((struct sockaddr *)sin, sin->sin6_len, 725 hostname, sizeof(hostname), 0, 0, niflags); 726 printf("--> %s ", hostname); 727 } 728 } 729 730 sin = (struct sockaddr_in6 *)info.rti_info[RTAX_NETMASK]; 731 if (!sin) 732 sin = &null_sin; 733 printf(" prefixlen %d ", prefix(&sin->sin6_addr, 734 sizeof(struct in6_addr))); 735 736 putchar('\n'); 737 } 738 #endif /*INET6*/ 739 740 /*ARGSUSED*/ 741 void 742 ether_status(int dummy) 743 { 744 char *cp; 745 int n; 746 747 dummy = 0; /*fool gcc*/ 748 749 cp = (char *)LLADDR(sdl); 750 if ((n = sdl->sdl_alen) > 0) { 751 if (sdl->sdl_type == IFT_ETHER) 752 printf ("\tether "); 753 else 754 printf ("\tlladdr "); 755 while (--n >= 0) 756 printf("%02x%c",*cp++ & 0xff, n>0? ':' : ' '); 757 putchar('\n'); 758 } 759 } 760 761 void 762 Perror(char *cmd) 763 { 764 switch (errno) { 765 766 case ENXIO: 767 errx(1, "%s: no such interface", cmd); 768 break; 769 770 case EPERM: 771 errx(1, "%s: permission denied", cmd); 772 break; 773 774 default: 775 err(1, "%s", cmd); 776 } 777 } 778 779 #define SIN(x) ((struct sockaddr_in *) &(x)) 780 struct sockaddr_in *sintab[] = { 781 SIN(addreq.ifra_addr), SIN(addreq.ifra_dstaddr)}; 782 783 void 784 in_getaddr(char *s, int which) 785 { 786 struct sockaddr_in *sin = sintab[which]; 787 struct hostent *hp; 788 struct netent *np; 789 790 sin->sin_len = sizeof(*sin); 791 sin->sin_family = AF_INET; 792 793 if (inet_aton(s, &sin->sin_addr)) 794 ; 795 else if ((hp = gethostbyname(s)) != NULL) 796 bcopy(hp->h_addr, (char *)&sin->sin_addr, hp->h_length); 797 else if ((np = getnetbyname(s)) != NULL) 798 sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY); 799 else 800 errx(1, "%s: bad value", s); 801 } 802 803 #ifdef INET6 804 #define SIN6(x) ((struct sockaddr_in6 *) &(x)) 805 struct sockaddr_in6 *sin6tab[] = { 806 SIN6(in6_addreq.ifra_addr), SIN6(in6_addreq.ifra_dstaddr)}; 807 808 void 809 in6_getaddr(char *s, int which) 810 { 811 struct sockaddr_in6 *sin = sin6tab[which]; 812 813 sin->sin6_len = sizeof(*sin); 814 sin->sin6_family = AF_INET6; 815 816 if (inet_pton(AF_INET6, s, &sin->sin6_addr) != 1) 817 errx(1, "%s: bad value", s); 818 } 819 820 void 821 in6_getprefix(char *plen, int which) 822 { 823 struct sockaddr_in6 *sin = sin6tab[which]; 824 u_char *cp; 825 int len = atoi(plen); 826 827 if ((len < 0) || (len > 128)) 828 errx(1, "%s: bad value", plen); 829 sin->sin6_len = sizeof(*sin); 830 sin->sin6_family = AF_INET6; 831 if ((len == 0) || (len == 128)) { 832 memset(&sin->sin6_addr, -1, sizeof(struct in6_addr)); 833 return; 834 } 835 for (cp = (u_char *)&sin->sin6_addr; len > 7; len -= 8) 836 *cp++ = -1; 837 *cp = (-1) << (8 - len); 838 } 839 #endif 840 841 /* 842 * Print a value a la the %b format of the kernel's printf 843 */ 844 void 845 printb(char *s, unsigned int v, char *bits) 846 { 847 int i, any = 0; 848 char c; 849 850 if (bits && *bits == 8) 851 printf("%s=%o", s, v & 0xffff); 852 else 853 printf("%s=%x", s, v & 0xffff); 854 bits++; 855 if (bits) { 856 putchar('<'); 857 while ((i = *bits++) != 0) { 858 if ((v & (1 << (i-1))) != 0) { 859 if (any) 860 putchar(','); 861 any = 1; 862 for (; (c = *bits) > 32; bits++) 863 putchar(c); 864 } else 865 for (; *bits > 32; bits++) 866 ; 867 } 868 putchar('>'); 869 } 870 } 871 872 #ifdef INET6 873 int 874 prefix(void *val, int size) 875 { 876 u_char *name = (u_char *)val; 877 int byte, bit, plen = 0; 878 879 for (byte = 0; byte < size; byte++, plen += 8) 880 if (name[byte] != 0xff) 881 break; 882 if (byte == size) 883 return (plen); 884 for (bit = 7; bit != 0; bit--, plen++) 885 if (!(name[byte] & (1 << bit))) 886 break; 887 for (; bit != 0; bit--) 888 if (name[byte] & (1 << bit)) 889 return(0); 890 byte++; 891 for (; byte < size; byte++) 892 if (name[byte]) 893 return(0); 894 return (plen); 895 } 896 #endif /*INET6*/ 897