1 /* $KAME: ifmcstat.c,v 1.48 2006/11/15 05:13:59 itojun Exp $ */ 2 3 /* 4 * Copyright (c) 2007-2009 Bruce Simpson. 5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include <sys/types.h> 37 #include <sys/param.h> 38 #include <sys/sysctl.h> 39 #include <sys/socket.h> 40 #include <sys/queue.h> 41 #include <sys/tree.h> 42 43 #include <net/if.h> 44 #include <net/if_var.h> 45 #include <net/if_types.h> 46 #include <net/if_dl.h> 47 #include <net/route.h> 48 49 #include <netinet/in.h> 50 #include <netinet/in_var.h> 51 #include <netinet/in_systm.h> 52 #include <netinet/ip.h> 53 #include <netinet/igmp.h> 54 #define KERNEL 55 # include <netinet/if_ether.h> 56 #undef KERNEL 57 #define _KERNEL 58 #define SYSCTL_DECL(x) 59 # include <netinet/igmp_var.h> 60 #undef SYSCTL_DECL 61 #undef _KERNEL 62 63 #ifdef INET6 64 #include <netinet/icmp6.h> 65 #define _KERNEL 66 # include <netinet6/mld6_var.h> 67 #undef _KERNEL 68 #endif /* INET6 */ 69 70 #include <arpa/inet.h> 71 #include <netdb.h> 72 73 #include <stddef.h> 74 #include <stdarg.h> 75 #include <stdint.h> 76 #include <stdio.h> 77 #include <stdlib.h> 78 #include <string.h> 79 80 #include <ctype.h> 81 #include <err.h> 82 #include <errno.h> 83 #include <fcntl.h> 84 #include <kvm.h> 85 #include <limits.h> 86 #include <ifaddrs.h> 87 #include <nlist.h> 88 #include <sysexits.h> 89 #include <unistd.h> 90 91 /* XXX: This file currently assumes INET and KVM support in the base system. */ 92 #ifndef INET 93 #define INET 94 #endif 95 96 extern void printb(const char *, unsigned int, const char *); 97 98 union sockunion { 99 struct sockaddr_storage ss; 100 struct sockaddr sa; 101 struct sockaddr_dl sdl; 102 #ifdef INET 103 struct sockaddr_in sin; 104 #endif 105 #ifdef INET6 106 struct sockaddr_in6 sin6; 107 #endif 108 }; 109 typedef union sockunion sockunion_t; 110 111 uint32_t ifindex = 0; 112 int af = AF_UNSPEC; 113 #ifdef WITH_KVM 114 int Kflag = 0; 115 #endif 116 int vflag = 0; 117 118 #define sa_equal(a1, a2) \ 119 (bcmp((a1), (a2), ((a1))->sa_len) == 0) 120 121 #define sa_dl_equal(a1, a2) \ 122 ((((struct sockaddr_dl *)(a1))->sdl_len == \ 123 ((struct sockaddr_dl *)(a2))->sdl_len) && \ 124 (bcmp(LLADDR((struct sockaddr_dl *)(a1)), \ 125 LLADDR((struct sockaddr_dl *)(a2)), \ 126 ((struct sockaddr_dl *)(a1))->sdl_alen) == 0)) 127 128 /* 129 * Most of the code in this utility is to support the use of KVM for 130 * post-mortem debugging of the multicast code. 131 */ 132 #ifdef WITH_KVM 133 134 #ifdef INET 135 static void if_addrlist(struct ifaddr *); 136 static struct in_multi * 137 in_multientry(struct in_multi *); 138 #endif /* INET */ 139 140 #ifdef INET6 141 static void if6_addrlist(struct ifaddr *); 142 static struct in6_multi * 143 in6_multientry(struct in6_multi *); 144 #endif /* INET6 */ 145 146 static void kread(u_long, void *, int); 147 static void ll_addrlist(struct ifaddr *); 148 149 static int ifmcstat_kvm(const char *kernel, const char *core); 150 151 #define KREAD(addr, buf, type) \ 152 kread((u_long)addr, (void *)buf, sizeof(type)) 153 154 kvm_t *kvmd; 155 struct nlist nl[] = { 156 { "_ifnet", 0, 0, 0, 0, }, 157 { "", 0, 0, 0, 0, }, 158 }; 159 #define N_IFNET 0 160 161 #endif /* WITH_KVM */ 162 163 static int ifmcstat_getifmaddrs(void); 164 #ifdef INET 165 static void in_ifinfo(struct igmp_ifinfo *); 166 static const char * inm_mode(u_int mode); 167 #endif 168 #ifdef INET6 169 static void in6_ifinfo(struct mld_ifinfo *); 170 static const char * inet6_n2a(struct in6_addr *); 171 #endif 172 int main(int, char **); 173 174 static void 175 usage() 176 { 177 178 fprintf(stderr, 179 "usage: ifmcstat [-i interface] [-f address family]" 180 " [-v]" 181 #ifdef WITH_KVM 182 " [-K] [-M core] [-N system]" 183 #endif 184 "\n"); 185 exit(EX_USAGE); 186 } 187 188 static const char *options = "i:f:vM:N:" 189 #ifdef WITH_KVM 190 "K" 191 #endif 192 ; 193 194 int 195 main(int argc, char **argv) 196 { 197 int c, error; 198 #ifdef WITH_KVM 199 const char *kernel = NULL; 200 const char *core = NULL; 201 #endif 202 203 while ((c = getopt(argc, argv, options)) != -1) { 204 switch (c) { 205 case 'i': 206 if ((ifindex = if_nametoindex(optarg)) == 0) { 207 fprintf(stderr, "%s: unknown interface\n", 208 optarg); 209 exit(EX_NOHOST); 210 } 211 break; 212 213 case 'f': 214 #ifdef INET 215 if (strcmp(optarg, "inet") == 0) { 216 af = AF_INET; 217 break; 218 } 219 #endif 220 #ifdef INET6 221 if (strcmp(optarg, "inet6") == 0) { 222 af = AF_INET6; 223 break; 224 } 225 #endif 226 if (strcmp(optarg, "link") == 0) { 227 af = AF_LINK; 228 break; 229 } 230 fprintf(stderr, "%s: unknown address family\n", optarg); 231 exit(EX_USAGE); 232 /*NOTREACHED*/ 233 break; 234 235 #ifdef WITH_KVM 236 case 'K': 237 ++Kflag; 238 break; 239 #endif 240 241 case 'v': 242 ++vflag; 243 break; 244 245 #ifdef WITH_KVM 246 case 'M': 247 core = strdup(optarg); 248 break; 249 250 case 'N': 251 kernel = strdup(optarg); 252 break; 253 #endif 254 255 default: 256 usage(); 257 break; 258 /*NOTREACHED*/ 259 } 260 } 261 262 if (af == AF_LINK && vflag) 263 usage(); 264 265 #ifdef WITH_KVM 266 if (Kflag) 267 error = ifmcstat_kvm(kernel, core); 268 /* 269 * If KVM failed, and user did not explicitly specify a core file, 270 * or force KVM backend to be disabled, try the sysctl backend. 271 */ 272 if (!Kflag || (error != 0 && (core == NULL && kernel == NULL))) 273 #endif 274 error = ifmcstat_getifmaddrs(); 275 if (error != 0) 276 exit(EX_OSERR); 277 278 exit(EX_OK); 279 /*NOTREACHED*/ 280 } 281 282 #ifdef INET 283 284 static void 285 in_ifinfo(struct igmp_ifinfo *igi) 286 { 287 288 printf("\t"); 289 switch (igi->igi_version) { 290 case IGMP_VERSION_1: 291 case IGMP_VERSION_2: 292 case IGMP_VERSION_3: 293 printf("igmpv%d", igi->igi_version); 294 break; 295 default: 296 printf("igmpv?(%d)", igi->igi_version); 297 break; 298 } 299 printb(" flags", igi->igi_flags, "\020\1SILENT\2LOOPBACK"); 300 if (igi->igi_version == IGMP_VERSION_3) { 301 printf(" rv %u qi %u qri %u uri %u", 302 igi->igi_rv, igi->igi_qi, igi->igi_qri, igi->igi_uri); 303 } 304 if (vflag >= 2) { 305 printf(" v1timer %u v2timer %u v3timer %u", 306 igi->igi_v1_timer, igi->igi_v2_timer, igi->igi_v3_timer); 307 } 308 printf("\n"); 309 } 310 311 static const char *inm_modes[] = { 312 "undefined", 313 "include", 314 "exclude", 315 }; 316 317 static const char * 318 inm_mode(u_int mode) 319 { 320 321 if (mode >= MCAST_UNDEFINED && mode <= MCAST_EXCLUDE) 322 return (inm_modes[mode]); 323 return (NULL); 324 } 325 326 #endif /* INET */ 327 328 #ifdef WITH_KVM 329 330 static int 331 ifmcstat_kvm(const char *kernel, const char *core) 332 { 333 char buf[_POSIX2_LINE_MAX], ifname[IFNAMSIZ]; 334 struct ifnet *ifp, *nifp, ifnet; 335 336 if ((kvmd = kvm_openfiles(kernel, core, NULL, O_RDONLY, buf)) == 337 NULL) { 338 perror("kvm_openfiles"); 339 return (-1); 340 } 341 if (kvm_nlist(kvmd, nl) < 0) { 342 perror("kvm_nlist"); 343 return (-1); 344 } 345 if (nl[N_IFNET].n_value == 0) { 346 printf("symbol %s not found\n", nl[N_IFNET].n_name); 347 return (-1); 348 } 349 KREAD(nl[N_IFNET].n_value, &ifp, struct ifnet *); 350 while (ifp) { 351 KREAD(ifp, &ifnet, struct ifnet); 352 nifp = ifnet.if_link.tqe_next; 353 if (ifindex && ifindex != ifnet.if_index) 354 goto next; 355 356 printf("%s:\n", if_indextoname(ifnet.if_index, ifname)); 357 #ifdef INET 358 if_addrlist(TAILQ_FIRST(&ifnet.if_addrhead)); 359 #endif 360 #ifdef INET6 361 if6_addrlist(TAILQ_FIRST(&ifnet.if_addrhead)); 362 #endif 363 if (vflag) 364 ll_addrlist(TAILQ_FIRST(&ifnet.if_addrhead)); 365 next: 366 ifp = nifp; 367 } 368 369 return (0); 370 } 371 372 static void 373 kread(u_long addr, void *buf, int len) 374 { 375 376 if (kvm_read(kvmd, addr, buf, len) != len) { 377 perror("kvm_read"); 378 exit(EX_OSERR); 379 } 380 } 381 382 static void 383 ll_addrlist(struct ifaddr *ifap) 384 { 385 char addrbuf[NI_MAXHOST]; 386 struct ifaddr ifa; 387 struct sockaddr sa; 388 struct sockaddr_dl sdl; 389 struct ifaddr *ifap0; 390 int error; 391 392 if (af && af != AF_LINK) 393 return; 394 395 ifap0 = ifap; 396 while (ifap) { 397 KREAD(ifap, &ifa, struct ifaddr); 398 if (ifa.ifa_addr == NULL) 399 goto nextifap; 400 KREAD(ifa.ifa_addr, &sa, struct sockaddr); 401 if (sa.sa_family != PF_LINK) 402 goto nextifap; 403 KREAD(ifa.ifa_addr, &sdl, struct sockaddr_dl); 404 if (sdl.sdl_alen == 0) 405 goto nextifap; 406 addrbuf[0] = '\0'; 407 error = getnameinfo((struct sockaddr *)&sdl, sdl.sdl_len, 408 addrbuf, sizeof(addrbuf), NULL, 0, NI_NUMERICHOST); 409 printf("\tlink %s\n", addrbuf); 410 nextifap: 411 ifap = ifa.ifa_link.tqe_next; 412 } 413 if (ifap0) { 414 struct ifnet ifnet; 415 struct ifmultiaddr ifm, *ifmp = 0; 416 417 KREAD(ifap0, &ifa, struct ifaddr); 418 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet); 419 if (TAILQ_FIRST(&ifnet.if_multiaddrs)) 420 ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs); 421 while (ifmp) { 422 KREAD(ifmp, &ifm, struct ifmultiaddr); 423 if (ifm.ifma_addr == NULL) 424 goto nextmulti; 425 KREAD(ifm.ifma_addr, &sa, struct sockaddr); 426 if (sa.sa_family != AF_LINK) 427 goto nextmulti; 428 KREAD(ifm.ifma_addr, &sdl, struct sockaddr_dl); 429 addrbuf[0] = '\0'; 430 error = getnameinfo((struct sockaddr *)&sdl, 431 sdl.sdl_len, addrbuf, sizeof(addrbuf), 432 NULL, 0, NI_NUMERICHOST); 433 printf("\t\tgroup %s refcnt %d\n", 434 addrbuf, ifm.ifma_refcount); 435 nextmulti: 436 ifmp = TAILQ_NEXT(&ifm, ifma_link); 437 } 438 } 439 } 440 441 #ifdef INET6 442 443 static void 444 in6_ifinfo(struct mld_ifinfo *mli) 445 { 446 447 printf("\t"); 448 switch (mli->mli_version) { 449 case MLD_VERSION_1: 450 case MLD_VERSION_2: 451 printf("mldv%d", mli->mli_version); 452 break; 453 default: 454 printf("mldv?(%d)", mli->mli_version); 455 break; 456 } 457 printb(" flags", mli->mli_flags, "\020\1SILENT"); 458 if (mli->mli_version == MLD_VERSION_2) { 459 printf(" rv %u qi %u qri %u uri %u", 460 mli->mli_rv, mli->mli_qi, mli->mli_qri, mli->mli_uri); 461 } 462 if (vflag >= 2) { 463 printf(" v1timer %u v2timer %u", mli->mli_v1_timer, 464 mli->mli_v2_timer); 465 } 466 printf("\n"); 467 } 468 469 static void 470 if6_addrlist(struct ifaddr *ifap) 471 { 472 struct ifnet ifnet; 473 struct ifaddr ifa; 474 struct sockaddr sa; 475 struct in6_ifaddr if6a; 476 struct ifaddr *ifap0; 477 478 if (af && af != AF_INET6) 479 return; 480 ifap0 = ifap; 481 while (ifap) { 482 KREAD(ifap, &ifa, struct ifaddr); 483 if (ifa.ifa_addr == NULL) 484 goto nextifap; 485 KREAD(ifa.ifa_addr, &sa, struct sockaddr); 486 if (sa.sa_family != PF_INET6) 487 goto nextifap; 488 KREAD(ifap, &if6a, struct in6_ifaddr); 489 printf("\tinet6 %s\n", inet6_n2a(&if6a.ia_addr.sin6_addr)); 490 /* 491 * Print per-link MLD information, if available. 492 */ 493 if (ifa.ifa_ifp != NULL) { 494 struct in6_ifextra ie; 495 struct mld_ifinfo mli; 496 497 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet); 498 KREAD(ifnet.if_afdata[AF_INET6], &ie, 499 struct in6_ifextra); 500 if (ie.mld_ifinfo != NULL) { 501 KREAD(ie.mld_ifinfo, &mli, struct mld_ifinfo); 502 in6_ifinfo(&mli); 503 } 504 } 505 nextifap: 506 ifap = ifa.ifa_link.tqe_next; 507 } 508 if (ifap0) { 509 struct ifnet ifnet; 510 struct ifmultiaddr ifm, *ifmp = 0; 511 struct sockaddr_dl sdl; 512 513 KREAD(ifap0, &ifa, struct ifaddr); 514 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet); 515 if (TAILQ_FIRST(&ifnet.if_multiaddrs)) 516 ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs); 517 while (ifmp) { 518 KREAD(ifmp, &ifm, struct ifmultiaddr); 519 if (ifm.ifma_addr == NULL) 520 goto nextmulti; 521 KREAD(ifm.ifma_addr, &sa, struct sockaddr); 522 if (sa.sa_family != AF_INET6) 523 goto nextmulti; 524 (void)in6_multientry((struct in6_multi *) 525 ifm.ifma_protospec); 526 if (ifm.ifma_lladdr == 0) 527 goto nextmulti; 528 KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl); 529 printf("\t\t\tmcast-macaddr %s refcnt %d\n", 530 ether_ntoa((struct ether_addr *)LLADDR(&sdl)), 531 ifm.ifma_refcount); 532 nextmulti: 533 ifmp = TAILQ_NEXT(&ifm, ifma_link); 534 } 535 } 536 } 537 538 static struct in6_multi * 539 in6_multientry(struct in6_multi *mc) 540 { 541 struct in6_multi multi; 542 543 KREAD(mc, &multi, struct in6_multi); 544 printf("\t\tgroup %s", inet6_n2a(&multi.in6m_addr)); 545 printf(" refcnt %u\n", multi.in6m_refcount); 546 547 return (multi.in6m_entry.le_next); 548 } 549 550 #endif /* INET6 */ 551 552 #ifdef INET 553 554 static void 555 if_addrlist(struct ifaddr *ifap) 556 { 557 struct ifaddr ifa; 558 struct ifnet ifnet; 559 struct sockaddr sa; 560 struct in_ifaddr ia; 561 struct ifaddr *ifap0; 562 563 if (af && af != AF_INET) 564 return; 565 ifap0 = ifap; 566 while (ifap) { 567 KREAD(ifap, &ifa, struct ifaddr); 568 if (ifa.ifa_addr == NULL) 569 goto nextifap; 570 KREAD(ifa.ifa_addr, &sa, struct sockaddr); 571 if (sa.sa_family != PF_INET) 572 goto nextifap; 573 KREAD(ifap, &ia, struct in_ifaddr); 574 printf("\tinet %s\n", inet_ntoa(ia.ia_addr.sin_addr)); 575 /* 576 * Print per-link IGMP information, if available. 577 */ 578 if (ifa.ifa_ifp != NULL) { 579 struct in_ifinfo ii; 580 struct igmp_ifinfo igi; 581 582 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet); 583 KREAD(ifnet.if_afdata[AF_INET], &ii, struct in_ifinfo); 584 if (ii.ii_igmp != NULL) { 585 KREAD(ii.ii_igmp, &igi, struct igmp_ifinfo); 586 in_ifinfo(&igi); 587 } 588 } 589 nextifap: 590 ifap = ifa.ifa_link.tqe_next; 591 } 592 if (ifap0) { 593 struct ifmultiaddr ifm, *ifmp = 0; 594 struct sockaddr_dl sdl; 595 596 KREAD(ifap0, &ifa, struct ifaddr); 597 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet); 598 if (TAILQ_FIRST(&ifnet.if_multiaddrs)) 599 ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs); 600 while (ifmp) { 601 KREAD(ifmp, &ifm, struct ifmultiaddr); 602 if (ifm.ifma_addr == NULL) 603 goto nextmulti; 604 KREAD(ifm.ifma_addr, &sa, struct sockaddr); 605 if (sa.sa_family != AF_INET) 606 goto nextmulti; 607 (void)in_multientry((struct in_multi *) 608 ifm.ifma_protospec); 609 if (ifm.ifma_lladdr == 0) 610 goto nextmulti; 611 KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl); 612 printf("\t\t\tmcast-macaddr %s refcnt %d\n", 613 ether_ntoa((struct ether_addr *)LLADDR(&sdl)), 614 ifm.ifma_refcount); 615 nextmulti: 616 ifmp = TAILQ_NEXT(&ifm, ifma_link); 617 } 618 } 619 } 620 621 static const char *inm_states[] = { 622 "not-member", 623 "silent", 624 "idle", 625 "lazy", 626 "sleeping", 627 "awakening", 628 "query-pending", 629 "sg-query-pending", 630 "leaving" 631 }; 632 633 static const char * 634 inm_state(u_int state) 635 { 636 637 if (state >= IGMP_NOT_MEMBER && state <= IGMP_LEAVING_MEMBER) 638 return (inm_states[state]); 639 return (NULL); 640 } 641 642 #if 0 643 static struct ip_msource * 644 ims_min_kvm(struct in_multi *pinm) 645 { 646 struct ip_msource ims0; 647 struct ip_msource *tmp, *parent; 648 649 parent = NULL; 650 tmp = RB_ROOT(&pinm->inm_srcs); 651 while (tmp) { 652 parent = tmp; 653 KREAD(tmp, &ims0, struct ip_msource); 654 tmp = RB_LEFT(&ims0, ims_link); 655 } 656 return (parent); /* kva */ 657 } 658 659 /* XXX This routine is buggy. See RB_NEXT in sys/tree.h. */ 660 static struct ip_msource * 661 ims_next_kvm(struct ip_msource *ims) 662 { 663 struct ip_msource ims0, ims1; 664 struct ip_msource *tmp; 665 666 KREAD(ims, &ims0, struct ip_msource); 667 if (RB_RIGHT(&ims0, ims_link)) { 668 ims = RB_RIGHT(&ims0, ims_link); 669 KREAD(ims, &ims1, struct ip_msource); 670 while ((tmp = RB_LEFT(&ims1, ims_link))) { 671 KREAD(tmp, &ims0, struct ip_msource); 672 ims = RB_LEFT(&ims0, ims_link); 673 } 674 } else { 675 tmp = RB_PARENT(&ims0, ims_link); 676 if (tmp) { 677 KREAD(tmp, &ims1, struct ip_msource); 678 if (ims == RB_LEFT(&ims1, ims_link)) 679 ims = tmp; 680 } else { 681 while ((tmp = RB_PARENT(&ims0, ims_link))) { 682 KREAD(tmp, &ims1, struct ip_msource); 683 if (ims == RB_RIGHT(&ims1, ims_link)) { 684 ims = tmp; 685 KREAD(ims, &ims0, struct ip_msource); 686 } else 687 break; 688 } 689 ims = RB_PARENT(&ims0, ims_link); 690 } 691 } 692 return (ims); /* kva */ 693 } 694 695 static void 696 inm_print_sources_kvm(struct in_multi *pinm) 697 { 698 struct ip_msource ims0; 699 struct ip_msource *ims; 700 struct in_addr src; 701 int cnt; 702 uint8_t fmode; 703 704 cnt = 0; 705 fmode = pinm->inm_st[1].iss_fmode; 706 if (fmode == MCAST_UNDEFINED) 707 return; 708 for (ims = ims_min_kvm(pinm); ims != NULL; ims = ims_next_kvm(ims)) { 709 if (cnt == 0) 710 printf(" srcs "); 711 KREAD(ims, &ims0, struct ip_msource); 712 /* Only print sources in-mode at t1. */ 713 if (fmode != ims_get_mode(pinm, ims, 1)) 714 continue; 715 src.s_addr = htonl(ims0.ims_haddr); 716 printf("%s%s", (cnt++ == 0 ? "" : ","), inet_ntoa(src)); 717 } 718 } 719 #endif 720 721 static struct in_multi * 722 in_multientry(struct in_multi *pinm) 723 { 724 struct in_multi inm; 725 const char *state, *mode; 726 727 KREAD(pinm, &inm, struct in_multi); 728 printf("\t\tgroup %s", inet_ntoa(inm.inm_addr)); 729 printf(" refcnt %u", inm.inm_refcount); 730 731 state = inm_state(inm.inm_state); 732 if (state) 733 printf(" state %s", state); 734 else 735 printf(" state (%d)", inm.inm_state); 736 737 mode = inm_mode(inm.inm_st[1].iss_fmode); 738 if (mode) 739 printf(" mode %s", mode); 740 else 741 printf(" mode (%d)", inm.inm_st[1].iss_fmode); 742 743 if (vflag >= 2) { 744 printf(" asm %u ex %u in %u rec %u", 745 (u_int)inm.inm_st[1].iss_asm, 746 (u_int)inm.inm_st[1].iss_ex, 747 (u_int)inm.inm_st[1].iss_in, 748 (u_int)inm.inm_st[1].iss_rec); 749 } 750 751 #if 0 752 /* Buggy. */ 753 if (vflag) 754 inm_print_sources_kvm(&inm); 755 #endif 756 757 printf("\n"); 758 return (NULL); 759 } 760 761 #endif /* INET */ 762 763 #endif /* WITH_KVM */ 764 765 #ifdef INET6 766 static const char * 767 inet6_n2a(struct in6_addr *p) 768 { 769 static char buf[NI_MAXHOST]; 770 struct sockaddr_in6 sin6; 771 u_int32_t scopeid; 772 const int niflags = NI_NUMERICHOST; 773 774 memset(&sin6, 0, sizeof(sin6)); 775 sin6.sin6_family = AF_INET6; 776 sin6.sin6_len = sizeof(struct sockaddr_in6); 777 sin6.sin6_addr = *p; 778 if (IN6_IS_ADDR_LINKLOCAL(p) || IN6_IS_ADDR_MC_LINKLOCAL(p) || 779 IN6_IS_ADDR_MC_NODELOCAL(p)) { 780 scopeid = ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 781 if (scopeid) { 782 sin6.sin6_scope_id = scopeid; 783 sin6.sin6_addr.s6_addr[2] = 0; 784 sin6.sin6_addr.s6_addr[3] = 0; 785 } 786 } 787 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 788 buf, sizeof(buf), NULL, 0, niflags) == 0) { 789 return (buf); 790 } else { 791 return ("(invalid)"); 792 } 793 } 794 #endif /* INET6 */ 795 796 #ifdef INET 797 /* 798 * Retrieve per-group source filter mode and lists via sysctl. 799 */ 800 static void 801 inm_print_sources_sysctl(uint32_t ifindex, struct in_addr gina) 802 { 803 #define MAX_SYSCTL_TRY 5 804 int mib[7]; 805 int ntry = 0; 806 size_t mibsize; 807 size_t len; 808 size_t needed; 809 size_t cnt; 810 int i; 811 char *buf; 812 struct in_addr *pina; 813 uint32_t *p; 814 uint32_t fmode; 815 const char *modestr; 816 817 mibsize = sizeof(mib) / sizeof(mib[0]); 818 if (sysctlnametomib("net.inet.ip.mcast.filters", mib, &mibsize) == -1) { 819 perror("sysctlnametomib"); 820 return; 821 } 822 823 needed = 0; 824 mib[5] = ifindex; 825 mib[6] = gina.s_addr; /* 32 bits wide */ 826 mibsize = sizeof(mib) / sizeof(mib[0]); 827 do { 828 if (sysctl(mib, mibsize, NULL, &needed, NULL, 0) == -1) { 829 perror("sysctl net.inet.ip.mcast.filters"); 830 return; 831 } 832 if ((buf = malloc(needed)) == NULL) { 833 perror("malloc"); 834 return; 835 } 836 if (sysctl(mib, mibsize, buf, &needed, NULL, 0) == -1) { 837 if (errno != ENOMEM || ++ntry >= MAX_SYSCTL_TRY) { 838 perror("sysctl"); 839 goto out_free; 840 } 841 free(buf); 842 buf = NULL; 843 } 844 } while (buf == NULL); 845 846 len = needed; 847 if (len < sizeof(uint32_t)) { 848 perror("sysctl"); 849 goto out_free; 850 } 851 852 p = (uint32_t *)buf; 853 fmode = *p++; 854 len -= sizeof(uint32_t); 855 856 modestr = inm_mode(fmode); 857 if (modestr) 858 printf(" mode %s", modestr); 859 else 860 printf(" mode (%u)", fmode); 861 862 if (vflag == 0) 863 goto out_free; 864 865 cnt = len / sizeof(struct in_addr); 866 pina = (struct in_addr *)p; 867 868 for (i = 0; i < cnt; i++) { 869 if (i == 0) 870 printf(" srcs "); 871 fprintf(stdout, "%s%s", (i == 0 ? "" : ","), 872 inet_ntoa(*pina++)); 873 len -= sizeof(struct in_addr); 874 } 875 if (len > 0) { 876 fprintf(stderr, "warning: %u trailing bytes from %s\n", 877 (unsigned int)len, "net.inet.ip.mcast.filters"); 878 } 879 880 out_free: 881 free(buf); 882 #undef MAX_SYSCTL_TRY 883 } 884 885 #endif /* INET */ 886 887 #ifdef INET6 888 /* 889 * Retrieve MLD per-group source filter mode and lists via sysctl. 890 * 891 * Note: The 128-bit IPv6 group address needs to be segmented into 892 * 32-bit pieces for marshaling to sysctl. So the MIB name ends 893 * up looking like this: 894 * a.b.c.d.e.ifindex.g[0].g[1].g[2].g[3] 895 * Assumes that pgroup originated from the kernel, so its components 896 * are already in network-byte order. 897 */ 898 static void 899 in6m_print_sources_sysctl(uint32_t ifindex, struct in6_addr *pgroup) 900 { 901 #define MAX_SYSCTL_TRY 5 902 char addrbuf[INET6_ADDRSTRLEN]; 903 int mib[10]; 904 int ntry = 0; 905 int *pi; 906 size_t mibsize; 907 size_t len; 908 size_t needed; 909 size_t cnt; 910 int i; 911 char *buf; 912 struct in6_addr *pina; 913 uint32_t *p; 914 uint32_t fmode; 915 const char *modestr; 916 917 mibsize = sizeof(mib) / sizeof(mib[0]); 918 if (sysctlnametomib("net.inet6.ip6.mcast.filters", mib, 919 &mibsize) == -1) { 920 perror("sysctlnametomib"); 921 return; 922 } 923 924 needed = 0; 925 mib[5] = ifindex; 926 pi = (int *)pgroup; 927 for (i = 0; i < 4; i++) 928 mib[6 + i] = *pi++; 929 930 mibsize = sizeof(mib) / sizeof(mib[0]); 931 do { 932 if (sysctl(mib, mibsize, NULL, &needed, NULL, 0) == -1) { 933 perror("sysctl net.inet6.ip6.mcast.filters"); 934 return; 935 } 936 if ((buf = malloc(needed)) == NULL) { 937 perror("malloc"); 938 return; 939 } 940 if (sysctl(mib, mibsize, buf, &needed, NULL, 0) == -1) { 941 if (errno != ENOMEM || ++ntry >= MAX_SYSCTL_TRY) { 942 perror("sysctl"); 943 goto out_free; 944 } 945 free(buf); 946 buf = NULL; 947 } 948 } while (buf == NULL); 949 950 len = needed; 951 if (len < sizeof(uint32_t)) { 952 perror("sysctl"); 953 goto out_free; 954 } 955 956 p = (uint32_t *)buf; 957 fmode = *p++; 958 len -= sizeof(uint32_t); 959 960 modestr = inm_mode(fmode); 961 if (modestr) 962 printf(" mode %s", modestr); 963 else 964 printf(" mode (%u)", fmode); 965 966 if (vflag == 0) 967 goto out_free; 968 969 cnt = len / sizeof(struct in6_addr); 970 pina = (struct in6_addr *)p; 971 972 for (i = 0; i < cnt; i++) { 973 if (i == 0) 974 printf(" srcs "); 975 inet_ntop(AF_INET6, (const char *)pina++, addrbuf, 976 INET6_ADDRSTRLEN); 977 fprintf(stdout, "%s%s", (i == 0 ? "" : ","), addrbuf); 978 len -= sizeof(struct in6_addr); 979 } 980 if (len > 0) { 981 fprintf(stderr, "warning: %u trailing bytes from %s\n", 982 (unsigned int)len, "net.inet6.ip6.mcast.filters"); 983 } 984 985 out_free: 986 free(buf); 987 #undef MAX_SYSCTL_TRY 988 } 989 #endif /* INET6 */ 990 991 static int 992 ifmcstat_getifmaddrs(void) 993 { 994 char thisifname[IFNAMSIZ]; 995 char addrbuf[NI_MAXHOST]; 996 struct ifaddrs *ifap, *ifa; 997 struct ifmaddrs *ifmap, *ifma; 998 sockunion_t lastifasa; 999 sockunion_t *psa, *pgsa, *pllsa, *pifasa; 1000 char *pcolon; 1001 char *pafname; 1002 uint32_t lastifindex, thisifindex; 1003 int error; 1004 1005 error = 0; 1006 ifap = NULL; 1007 ifmap = NULL; 1008 lastifindex = 0; 1009 thisifindex = 0; 1010 lastifasa.ss.ss_family = AF_UNSPEC; 1011 1012 if (getifaddrs(&ifap) != 0) { 1013 warn("getifmaddrs"); 1014 return (-1); 1015 } 1016 1017 if (getifmaddrs(&ifmap) != 0) { 1018 warn("getifmaddrs"); 1019 error = -1; 1020 goto out; 1021 } 1022 1023 for (ifma = ifmap; ifma; ifma = ifma->ifma_next) { 1024 error = 0; 1025 if (ifma->ifma_name == NULL || ifma->ifma_addr == NULL) 1026 continue; 1027 1028 psa = (sockunion_t *)ifma->ifma_name; 1029 if (psa->sa.sa_family != AF_LINK) { 1030 fprintf(stderr, 1031 "WARNING: Kernel returned invalid data.\n"); 1032 error = -1; 1033 break; 1034 } 1035 1036 /* Filter on interface name. */ 1037 thisifindex = psa->sdl.sdl_index; 1038 if (ifindex != 0 && thisifindex != ifindex) 1039 continue; 1040 1041 /* Filter on address family. */ 1042 pgsa = (sockunion_t *)ifma->ifma_addr; 1043 if (af != 0 && pgsa->sa.sa_family != af) 1044 continue; 1045 1046 strlcpy(thisifname, link_ntoa(&psa->sdl), IFNAMSIZ); 1047 pcolon = strchr(thisifname, ':'); 1048 if (pcolon) 1049 *pcolon = '\0'; 1050 1051 /* Only print the banner for the first ifmaddrs entry. */ 1052 if (lastifindex == 0 || lastifindex != thisifindex) { 1053 lastifindex = thisifindex; 1054 fprintf(stdout, "%s:\n", thisifname); 1055 } 1056 1057 /* 1058 * Currently, multicast joins only take place on the 1059 * primary IPv4 address, and only on the link-local IPv6 1060 * address, as per IGMPv2/3 and MLDv1/2 semantics. 1061 * Therefore, we only look up the primary address on 1062 * the first pass. 1063 */ 1064 pifasa = NULL; 1065 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1066 if ((strcmp(ifa->ifa_name, thisifname) != 0) || 1067 (ifa->ifa_addr == NULL) || 1068 (ifa->ifa_addr->sa_family != pgsa->sa.sa_family)) 1069 continue; 1070 /* 1071 * For AF_INET6 only the link-local address should 1072 * be returned. If built without IPv6 support, 1073 * skip this address entirely. 1074 */ 1075 pifasa = (sockunion_t *)ifa->ifa_addr; 1076 if (pifasa->sa.sa_family == AF_INET6 1077 #ifdef INET6 1078 && !IN6_IS_ADDR_LINKLOCAL(&pifasa->sin6.sin6_addr) 1079 #endif 1080 ) { 1081 pifasa = NULL; 1082 continue; 1083 } 1084 break; 1085 } 1086 if (pifasa == NULL) 1087 continue; /* primary address not found */ 1088 1089 if (!vflag && pifasa->sa.sa_family == AF_LINK) 1090 continue; 1091 1092 /* Parse and print primary address, if not already printed. */ 1093 if (lastifasa.ss.ss_family == AF_UNSPEC || 1094 ((lastifasa.ss.ss_family == AF_LINK && 1095 !sa_dl_equal(&lastifasa.sa, &pifasa->sa)) || 1096 !sa_equal(&lastifasa.sa, &pifasa->sa))) { 1097 1098 switch (pifasa->sa.sa_family) { 1099 case AF_INET: 1100 pafname = "inet"; 1101 break; 1102 case AF_INET6: 1103 pafname = "inet6"; 1104 break; 1105 case AF_LINK: 1106 pafname = "link"; 1107 break; 1108 default: 1109 pafname = "unknown"; 1110 break; 1111 } 1112 1113 switch (pifasa->sa.sa_family) { 1114 case AF_INET6: 1115 #ifdef INET6 1116 { 1117 const char *p = 1118 inet6_n2a(&pifasa->sin6.sin6_addr); 1119 strlcpy(addrbuf, p, sizeof(addrbuf)); 1120 break; 1121 } 1122 #else 1123 /* FALLTHROUGH */ 1124 #endif 1125 case AF_INET: 1126 case AF_LINK: 1127 error = getnameinfo(&pifasa->sa, 1128 pifasa->sa.sa_len, 1129 addrbuf, sizeof(addrbuf), NULL, 0, 1130 NI_NUMERICHOST); 1131 if (error) 1132 perror("getnameinfo"); 1133 break; 1134 default: 1135 addrbuf[0] = '\0'; 1136 break; 1137 } 1138 1139 fprintf(stdout, "\t%s %s\n", pafname, addrbuf); 1140 #ifdef INET 1141 /* 1142 * Print per-link IGMP information, if available. 1143 */ 1144 if (pifasa->sa.sa_family == AF_INET) { 1145 struct igmp_ifinfo igi; 1146 size_t mibsize, len; 1147 int mib[5]; 1148 1149 mibsize = sizeof(mib) / sizeof(mib[0]); 1150 if (sysctlnametomib("net.inet.igmp.ifinfo", 1151 mib, &mibsize) == -1) { 1152 perror("sysctlnametomib"); 1153 goto next_ifnet; 1154 } 1155 mib[mibsize] = thisifindex; 1156 len = sizeof(struct igmp_ifinfo); 1157 if (sysctl(mib, mibsize + 1, &igi, &len, NULL, 1158 0) == -1) { 1159 perror("sysctl net.inet.igmp.ifinfo"); 1160 goto next_ifnet; 1161 } 1162 in_ifinfo(&igi); 1163 } 1164 #endif /* INET */ 1165 #ifdef INET6 1166 /* 1167 * Print per-link MLD information, if available. 1168 */ 1169 if (pifasa->sa.sa_family == AF_INET6) { 1170 struct mld_ifinfo mli; 1171 size_t mibsize, len; 1172 int mib[5]; 1173 1174 mibsize = sizeof(mib) / sizeof(mib[0]); 1175 if (sysctlnametomib("net.inet6.mld.ifinfo", 1176 mib, &mibsize) == -1) { 1177 perror("sysctlnametomib"); 1178 goto next_ifnet; 1179 } 1180 mib[mibsize] = thisifindex; 1181 len = sizeof(struct mld_ifinfo); 1182 if (sysctl(mib, mibsize + 1, &mli, &len, NULL, 1183 0) == -1) { 1184 perror("sysctl net.inet6.mld.ifinfo"); 1185 goto next_ifnet; 1186 } 1187 in6_ifinfo(&mli); 1188 } 1189 #endif /* INET6 */ 1190 #if defined(INET) || defined(INET6) 1191 next_ifnet: 1192 #endif 1193 lastifasa = *pifasa; 1194 } 1195 1196 /* Print this group address. */ 1197 #ifdef INET6 1198 if (pgsa->sa.sa_family == AF_INET6) { 1199 const char *p = inet6_n2a(&pgsa->sin6.sin6_addr); 1200 strlcpy(addrbuf, p, sizeof(addrbuf)); 1201 } else 1202 #endif 1203 { 1204 error = getnameinfo(&pgsa->sa, pgsa->sa.sa_len, 1205 addrbuf, sizeof(addrbuf), NULL, 0, NI_NUMERICHOST); 1206 if (error) 1207 perror("getnameinfo"); 1208 } 1209 1210 fprintf(stdout, "\t\tgroup %s", addrbuf); 1211 #ifdef INET 1212 if (pgsa->sa.sa_family == AF_INET) { 1213 inm_print_sources_sysctl(thisifindex, 1214 pgsa->sin.sin_addr); 1215 } 1216 #endif 1217 #ifdef INET6 1218 if (pgsa->sa.sa_family == AF_INET6) { 1219 in6m_print_sources_sysctl(thisifindex, 1220 &pgsa->sin6.sin6_addr); 1221 } 1222 #endif 1223 fprintf(stdout, "\n"); 1224 1225 /* Link-layer mapping, if present. */ 1226 pllsa = (sockunion_t *)ifma->ifma_lladdr; 1227 if (pllsa != NULL) { 1228 error = getnameinfo(&pllsa->sa, pllsa->sa.sa_len, 1229 addrbuf, sizeof(addrbuf), NULL, 0, NI_NUMERICHOST); 1230 fprintf(stdout, "\t\t\tmcast-macaddr %s\n", addrbuf); 1231 } 1232 } 1233 out: 1234 if (ifmap != NULL) 1235 freeifmaddrs(ifmap); 1236 if (ifap != NULL) 1237 freeifaddrs(ifap); 1238 1239 return (error); 1240 } 1241