usr.bin/netstat/inet6.c

   1 /*      BSDI inet.c,v 2.3 1995/10/24 02:19:29 prb Exp   */
   2 /*-
   3  * SPDX-License-Identifier: BSD-3-Clause
   4  *
   5  * Copyright (c) 1983, 1988, 1993
   6  *      The Regents of the University of California.  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 University 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 REGENTS 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 REGENTS 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 #if 0
  34 #ifndef lint
  35 static char sccsid[] = "@(#)inet6.c     8.4 (Berkeley) 4/20/94";
  36 #endif /* not lint */
  37 #endif
  38
  39 #include <sys/cdefs.h>
  40 __FBSDID("$FreeBSD$");
  41
  42 #ifdef INET6
  43 #include <sys/param.h>
  44 #include <sys/socket.h>
  45 #include <sys/socketvar.h>
  46 #include <sys/ioctl.h>
  47 #include <sys/mbuf.h>
  48 #include <sys/protosw.h>
  49
  50 #include <net/route.h>
  51 #include <net/if.h>
  52 #include <netinet/in.h>
  53 #include <netinet/ip6.h>
  54 #include <netinet/icmp6.h>
  55 #include <netinet/in_systm.h>
  56 #include <netinet6/in6_pcb.h>
  57 #include <netinet6/in6_var.h>
  58 #include <netinet6/ip6_var.h>
  59 #include <netinet6/pim6_var.h>
  60 #include <netinet6/raw_ip6.h>
  61
  62 #include <arpa/inet.h>
  63 #include <netdb.h>
  64
  65 #include <err.h>
  66 #include <stdint.h>
  67 #include <stdio.h>
  68 #include <stdbool.h>
  69 #include <errno.h>
  70 #include <string.h>
  71 #include <unistd.h>
  72 #include <libxo/xo.h>
  73 #include "netstat.h"
  74
  75 static char ntop_buf[INET6_ADDRSTRLEN];
  76
  77 static  const char *ip6nh[] = {
  78         "hop by hop",
  79         "ICMP",
  80         "IGMP",
  81         "#3",
  82         "IP",
  83         "#5",
  84         "TCP",
  85         "#7",
  86         "#8",
  87         "#9",
  88         "#10",
  89         "#11",
  90         "#12",
  91         "#13",
  92         "#14",
  93         "#15",
  94         "#16",
  95         "UDP",
  96         "#18",
  97         "#19",
  98         "#20",
  99         "#21",
 100         "IDP",
 101         "#23",
 102         "#24",
 103         "#25",
 104         "#26",
 105         "#27",
 106         "#28",
 107         "TP",
 108         "#30",
 109         "#31",
 110         "#32",
 111         "#33",
 112         "#34",
 113         "#35",
 114         "#36",
 115         "#37",
 116         "#38",
 117         "#39",
 118         "#40",
 119         "IP6",
 120         "#42",
 121         "routing",
 122         "fragment",
 123         "#45",
 124         "#46",
 125         "#47",
 126         "#48",
 127         "#49",
 128         "ESP",
 129         "AH",
 130         "#52",
 131         "#53",
 132         "#54",
 133         "#55",
 134         "#56",
 135         "#57",
 136         "ICMP6",
 137         "no next header",
 138         "destination option",
 139         "#61",
 140         "mobility",
 141         "#63",
 142         "#64",
 143         "#65",
 144         "#66",
 145         "#67",
 146         "#68",
 147         "#69",
 148         "#70",
 149         "#71",
 150         "#72",
 151         "#73",
 152         "#74",
 153         "#75",
 154         "#76",
 155         "#77",
 156         "#78",
 157         "#79",
 158         "ISOIP",
 159         "#81",
 160         "#82",
 161         "#83",
 162         "#84",
 163         "#85",
 164         "#86",
 165         "#87",
 166         "#88",
 167         "OSPF",
 168         "#80",
 169         "#91",
 170         "#92",
 171         "#93",
 172         "#94",
 173         "#95",
 174         "#96",
 175         "Ethernet",
 176         "#98",
 177         "#99",
 178         "#100",
 179         "#101",
 180         "#102",
 181         "PIM",
 182         "#104",
 183         "#105",
 184         "#106",
 185         "#107",
 186         "#108",
 187         "#109",
 188         "#110",
 189         "#111",
 190         "#112",
 191         "#113",
 192         "#114",
 193         "#115",
 194         "#116",
 195         "#117",
 196         "#118",
 197         "#119",
 198         "#120",
 199         "#121",
 200         "#122",
 201         "#123",
 202         "#124",
 203         "#125",
 204         "#126",
 205         "#127",
 206         "#128",
 207         "#129",
 208         "#130",
 209         "#131",
 210         "SCTP",
 211         "#133",
 212         "#134",
 213         "#135",
 214         "UDPLite",
 215         "#137",
 216         "#138",
 217         "#139",
 218         "#140",
 219         "#141",
 220         "#142",
 221         "#143",
 222         "#144",
 223         "#145",
 224         "#146",
 225         "#147",
 226         "#148",
 227         "#149",
 228         "#150",
 229         "#151",
 230         "#152",
 231         "#153",
 232         "#154",
 233         "#155",
 234         "#156",
 235         "#157",
 236         "#158",
 237         "#159",
 238         "#160",
 239         "#161",
 240         "#162",
 241         "#163",
 242         "#164",
 243         "#165",
 244         "#166",
 245         "#167",
 246         "#168",
 247         "#169",
 248         "#170",
 249         "#171",
 250         "#172",
 251         "#173",
 252         "#174",
 253         "#175",
 254         "#176",
 255         "#177",
 256         "#178",
 257         "#179",
 258         "#180",
 259         "#181",
 260         "#182",
 261         "#183",
 262         "#184",
 263         "#185",
 264         "#186",
 265         "#187",
 266         "#188",
 267         "#189",
 268         "#180",
 269         "#191",
 270         "#192",
 271         "#193",
 272         "#194",
 273         "#195",
 274         "#196",
 275         "#197",
 276         "#198",
 277         "#199",
 278         "#200",
 279         "#201",
 280         "#202",
 281         "#203",
 282         "#204",
 283         "#205",
 284         "#206",
 285         "#207",
 286         "#208",
 287         "#209",
 288         "#210",
 289         "#211",
 290         "#212",
 291         "#213",
 292         "#214",
 293         "#215",
 294         "#216",
 295         "#217",
 296         "#218",
 297         "#219",
 298         "#220",
 299         "#221",
 300         "#222",
 301         "#223",
 302         "#224",
 303         "#225",
 304         "#226",
 305         "#227",
 306         "#228",
 307         "#229",
 308         "#230",
 309         "#231",
 310         "#232",
 311         "#233",
 312         "#234",
 313         "#235",
 314         "#236",
 315         "#237",
 316         "#238",
 317         "#239",
 318         "#240",
 319         "#241",
 320         "#242",
 321         "#243",
 322         "#244",
 323         "#245",
 324         "#246",
 325         "#247",
 326         "#248",
 327         "#249",
 328         "#250",
 329         "#251",
 330         "#252",
 331         "#253",
 332         "#254",
 333         "#255",
 334 };
 335
 336 static const char *srcrule_str[] = {
 337         "first candidate",
 338         "same address",
 339         "appropriate scope",
 340         "deprecated address",
 341         "home address",
 342         "outgoing interface",
 343         "matching label",
 344         "public/temporary address",
 345         "alive interface",
 346         "better virtual status",
 347         "preferred source",
 348         "rule #11",
 349         "rule #12",
 350         "rule #13",
 351         "longest match",
 352         "rule #15",
 353 };
 354
 355 /*
 356  * Dump IP6 statistics structure.
 357  */
 358 void
 359 ip6_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
 360 {
 361         struct ip6stat ip6stat;
 362         int first, i;
 363
 364         if (fetch_stats("net.inet6.ip6.stats", off, &ip6stat,
 365             sizeof(ip6stat), kread_counters) != 0)
 366                 return;
 367
 368         xo_open_container(name);
 369         xo_emit("{T:/%s}:\n", name);
 370
 371 #define p(f, m) if (ip6stat.f || sflag <= 1) \
 372         xo_emit(m, (uintmax_t)ip6stat.f, plural(ip6stat.f))
 373 #define p1a(f, m) if (ip6stat.f || sflag <= 1) \
 374         xo_emit(m, (uintmax_t)ip6stat.f)
 375
 376         p(ip6s_total, "\t{:received-packets/%ju} "
 377             "{N:/total packet%s received}\n");
 378         p1a(ip6s_toosmall, "\t{:dropped-below-minimum-size/%ju} "
 379             "{N:/with size smaller than minimum}\n");
 380         p1a(ip6s_tooshort, "\t{:dropped-short-packets/%ju} "
 381             "{N:/with data size < data length}\n");
 382         p1a(ip6s_badoptions, "\t{:dropped-bad-options/%ju} "
 383             "{N:/with bad options}\n");
 384         p1a(ip6s_badvers, "\t{:dropped-bad-version/%ju} "
 385             "{N:/with incorrect version number}\n");
 386         p(ip6s_fragments, "\t{:received-fragments/%ju} "
 387             "{N:/fragment%s received}\n");
 388         p(ip6s_fragdropped, "\t{:dropped-fragment/%ju} "
 389             "{N:/fragment%s dropped (dup or out of space)}\n");
 390         p(ip6s_fragtimeout, "\t{:dropped-fragment-after-timeout/%ju} "
 391             "{N:/fragment%s dropped after timeout}\n");
 392         p(ip6s_fragoverflow, "\t{:dropped-fragments-overflow/%ju} "
 393             "{N:/fragment%s that exceeded limit}\n");
 394         p(ip6s_atomicfrags, "\t{:atomic-fragments/%ju} "
 395             "{N:/atomic fragment%s}\n");
 396         p(ip6s_reassembled, "\t{:reassembled-packets/%ju} "
 397             "{N:/packet%s reassembled ok}\n");
 398         p(ip6s_delivered, "\t{:received-local-packets/%ju} "
 399             "{N:/packet%s for this host}\n");
 400         p(ip6s_forward, "\t{:forwarded-packets/%ju} "
 401             "{N:/packet%s forwarded}\n");
 402         p(ip6s_cantforward, "\t{:packets-not-forwardable/%ju} "
 403             "{N:/packet%s not forwardable}\n");
 404         p(ip6s_redirectsent, "\t{:sent-redirects/%ju} "
 405             "{N:/redirect%s sent}\n");
 406         p(ip6s_localout, "\t{:sent-packets/%ju} "
 407             "{N:/packet%s sent from this host}\n");
 408         p(ip6s_rawout, "\t{:send-packets-fabricated-header/%ju} "
 409             "{N:/packet%s sent with fabricated ip header}\n");
 410         p(ip6s_odropped, "\t{:discard-no-mbufs/%ju} "
 411             "{N:/output packet%s dropped due to no bufs, etc.}\n");
 412         p(ip6s_noroute, "\t{:discard-no-route/%ju} "
 413             "{N:/output packet%s discarded due to no route}\n");
 414         p(ip6s_fragmented, "\t{:sent-fragments/%ju} "
 415             "{N:/output datagram%s fragmented}\n");
 416         p(ip6s_ofragments, "\t{:fragments-created/%ju} "
 417             "{N:/fragment%s created}\n");
 418         p(ip6s_cantfrag, "\t{:discard-cannot-fragment/%ju} "
 419             "{N:/datagram%s that can't be fragmented}\n");
 420         p(ip6s_badscope, "\t{:discard-scope-violations/%ju} "
 421             "{N:/packet%s that violated scope rules}\n");
 422         p(ip6s_notmember, "\t{:multicast-no-join-packets/%ju} "
 423             "{N:/multicast packet%s which we don't join}\n");
 424         for (first = 1, i = 0; i < IP6S_HDRCNT; i++)
 425                 if (ip6stat.ip6s_nxthist[i] != 0) {
 426                         if (first) {
 427                                 xo_emit("\t{T:Input histogram}:\n");
 428                                 xo_open_list("input-histogram");
 429                                 first = 0;
 430                         }
 431                         xo_open_instance("input-histogram");
 432                         xo_emit("\t\t{k:name/%s}: {:count/%ju}\n", ip6nh[i],
 433                             (uintmax_t)ip6stat.ip6s_nxthist[i]);
 434                         xo_close_instance("input-histogram");
 435                 }
 436         if (!first)
 437                 xo_close_list("input-histogram");
 438
 439         xo_open_container("mbuf-statistics");
 440         xo_emit("\t{T:Mbuf statistics}:\n");
 441         xo_emit("\t\t{:one-mbuf/%ju} {N:/one mbuf}\n",
 442             (uintmax_t)ip6stat.ip6s_m1);
 443         for (first = 1, i = 0; i < IP6S_M2MMAX; i++) {
 444                 char ifbuf[IFNAMSIZ];
 445                 if (ip6stat.ip6s_m2m[i] != 0) {
 446                         if (first) {
 447                                 xo_emit("\t\t{N:two or more mbuf}:\n");
 448                                 xo_open_list("mbuf-data");
 449                                 first = 0;
 450                         }
 451                         xo_open_instance("mbuf-data");
 452                         xo_emit("\t\t\t{k:name/%s}= {:count/%ju}\n",
 453                             if_indextoname(i, ifbuf),
 454                             (uintmax_t)ip6stat.ip6s_m2m[i]);
 455                         xo_close_instance("mbuf-data");
 456                 }
 457         }
 458         if (!first)
 459                 xo_close_list("mbuf-data");
 460         xo_emit("\t\t{:one-extra-mbuf/%ju} {N:one ext mbuf}\n",
 461             (uintmax_t)ip6stat.ip6s_mext1);
 462         xo_emit("\t\t{:two-or-more-extra-mbufs/%ju} "
 463             "{N:/two or more ext mbuf}\n", (uintmax_t)ip6stat.ip6s_mext2m);
 464         xo_close_container("mbuf-statistics");
 465
 466         p(ip6s_exthdrtoolong, "\t{:dropped-header-too-long/%ju} "
 467             "{N:/packet%s whose headers are not contiguous}\n");
 468         p(ip6s_nogif, "\t{:discard-tunnel-no-gif/%ju} "
 469             "{N:/tunneling packet%s that can't find gif}\n");
 470         p(ip6s_toomanyhdr, "\t{:dropped-too-many-headers/%ju} "
 471             "{N:/packet%s discarded because of too many headers}\n");
 472
 473         /* for debugging source address selection */
 474 #define PRINT_SCOPESTAT(s,i) do {\
 475                 switch(i) { /* XXX hardcoding in each case */\
 476                 case 1:\
 477                         p(s, "\t\t{ke:name/interface-locals}{:count/%ju} " \
 478                           "{N:/interface-local%s}\n");  \
 479                         break;\
 480                 case 2:\
 481                         p(s,"\t\t{ke:name/link-locals}{:count/%ju} " \
 482                         "{N:/link-local%s}\n"); \
 483                         break;\
 484                 case 5:\
 485                         p(s,"\t\t{ke:name/site-locals}{:count/%ju} " \
 486                           "{N:/site-local%s}\n");\
 487                         break;\
 488                 case 14:\
 489                         p(s,"\t\t{ke:name/globals}{:count/%ju} " \
 490                           "{N:/global%s}\n");\
 491                         break;\
 492                 default:\
 493                         xo_emit("\t\t{qke:name/%#x}{:count/%ju} " \
 494                                 "{N:/addresses scope=%#x}\n",\
 495                                 i, (uintmax_t)ip6stat.s, i);       \
 496                 }\
 497         } while (0);
 498
 499         xo_open_container("source-address-selection");
 500         p(ip6s_sources_none, "\t{:address-selection-failures/%ju} "
 501             "{N:/failure%s of source address selection}\n");
 502
 503         for (first = 1, i = 0; i < IP6S_SCOPECNT; i++) {
 504                 if (ip6stat.ip6s_sources_sameif[i]) {
 505                         if (first) {
 506                                 xo_open_list("outgoing-interface");
 507                                 xo_emit("\tsource addresses on an outgoing "
 508                                     "I/F\n");
 509                                 first = 0;
 510                         }
 511                         xo_open_instance("outgoing-interface");
 512                         PRINT_SCOPESTAT(ip6s_sources_sameif[i], i);
 513                         xo_close_instance("outgoing-interface");
 514                 }
 515         }
 516         if (!first)
 517                 xo_close_list("outgoing-interface");
 518
 519         for (first = 1, i = 0; i < IP6S_SCOPECNT; i++) {
 520                 if (ip6stat.ip6s_sources_otherif[i]) {
 521                         if (first) {
 522                                 xo_open_list("non-outgoing-interface");
 523                                 xo_emit("\tsource addresses on a non-outgoing "
 524                                     "I/F\n");
 525                                 first = 0;
 526                         }
 527                         xo_open_instance("non-outgoing-interface");
 528                         PRINT_SCOPESTAT(ip6s_sources_otherif[i], i);
 529                         xo_close_instance("non-outgoing-interface");
 530                 }
 531         }
 532         if (!first)
 533                 xo_close_list("non-outgoing-interface");
 534
 535         for (first = 1, i = 0; i < IP6S_SCOPECNT; i++) {
 536                 if (ip6stat.ip6s_sources_samescope[i]) {
 537                         if (first) {
 538                                 xo_open_list("same-source");
 539                                 xo_emit("\tsource addresses of same scope\n");
 540                                 first = 0;
 541                         }
 542                         xo_open_instance("same-source");
 543                         PRINT_SCOPESTAT(ip6s_sources_samescope[i], i);
 544                         xo_close_instance("same-source");
 545                 }
 546         }
 547         if (!first)
 548                 xo_close_list("same-source");
 549
 550         for (first = 1, i = 0; i < IP6S_SCOPECNT; i++) {
 551                 if (ip6stat.ip6s_sources_otherscope[i]) {
 552                         if (first) {
 553                                 xo_open_list("different-scope");
 554                                 xo_emit("\tsource addresses of a different "
 555                                     "scope\n");
 556                                 first = 0;
 557                         }
 558                         xo_open_instance("different-scope");
 559                         PRINT_SCOPESTAT(ip6s_sources_otherscope[i], i);
 560                         xo_close_instance("different-scope");
 561                 }
 562         }
 563         if (!first)
 564                 xo_close_list("different-scope");
 565
 566         for (first = 1, i = 0; i < IP6S_SCOPECNT; i++) {
 567                 if (ip6stat.ip6s_sources_deprecated[i]) {
 568                         if (first) {
 569                                 xo_open_list("deprecated-source");
 570                                 xo_emit("\tdeprecated source addresses\n");
 571                                 first = 0;
 572                         }
 573                         xo_open_instance("deprecated-source");
 574                         PRINT_SCOPESTAT(ip6s_sources_deprecated[i], i);
 575                         xo_close_instance("deprecated-source");
 576                 }
 577         }
 578         if (!first)
 579                 xo_close_list("deprecated-source");
 580
 581         for (first = 1, i = 0; i < IP6S_RULESMAX; i++) {
 582                 if (ip6stat.ip6s_sources_rule[i]) {
 583                         if (first) {
 584                                 xo_open_list("rules-applied");
 585                                 xo_emit("\t{T:Source addresses selection "
 586                                     "rule applied}:\n");
 587                                 first = 0;
 588                         }
 589                         xo_open_instance("rules-applied");
 590                         xo_emit("\t\t{ke:name/%s}{:count/%ju} {d:name/%s}\n",
 591                             srcrule_str[i],
 592                             (uintmax_t)ip6stat.ip6s_sources_rule[i],
 593                             srcrule_str[i]);
 594                         xo_close_instance("rules-applied");
 595                 }
 596         }
 597         if (!first)
 598                 xo_close_list("rules-applied");
 599
 600         xo_close_container("source-address-selection");
 601
 602 #undef p
 603 #undef p1a
 604         xo_close_container(name);
 605 }
 606
 607 /*
 608  * Dump IPv6 per-interface statistics based on RFC 2465.
 609  */
 610 void
 611 ip6_ifstats(char *ifname)
 612 {
 613         struct in6_ifreq ifr;
 614         int s;
 615
 616 #define p(f, m) if (ifr.ifr_ifru.ifru_stat.f || sflag <= 1)     \
 617         xo_emit(m, (uintmax_t)ifr.ifr_ifru.ifru_stat.f,         \
 618             plural(ifr.ifr_ifru.ifru_stat.f))
 619
 620         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
 621                 xo_warn("Warning: socket(AF_INET6)");
 622                 return;
 623         }
 624
 625         strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
 626         if (ioctl(s, SIOCGIFSTAT_IN6, (char *)&ifr) < 0) {
 627                 if (errno != EPFNOSUPPORT)
 628                         xo_warn("Warning: ioctl(SIOCGIFSTAT_IN6)");
 629                 goto end;
 630         }
 631
 632         xo_emit("{T:/ip6 on %s}:\n", ifr.ifr_name);
 633
 634         xo_open_instance("ip6-interface-statistics");
 635         xo_emit("{ke:name/%s}", ifr.ifr_name);
 636
 637         p(ifs6_in_receive, "\t{:received-packets/%ju} "
 638             "{N:/total input datagram%s}\n");
 639         p(ifs6_in_hdrerr, "\t{:dropped-invalid-header/%ju} "
 640             "{N:/datagram%s with invalid header received}\n");
 641         p(ifs6_in_toobig, "\t{:dropped-mtu-exceeded/%ju} "
 642             "{N:/datagram%s exceeded MTU received}\n");
 643         p(ifs6_in_noroute, "\t{:dropped-no-route/%ju} "
 644             "{N:/datagram%s with no route received}\n");
 645         p(ifs6_in_addrerr, "\t{:dropped-invalid-destination/%ju} "
 646             "{N:/datagram%s with invalid dst received}\n");
 647         p(ifs6_in_protounknown, "\t{:dropped-unknown-protocol/%ju} "
 648             "{N:/datagram%s with unknown proto received}\n");
 649         p(ifs6_in_truncated, "\t{:dropped-truncated/%ju} "
 650             "{N:/truncated datagram%s received}\n");
 651         p(ifs6_in_discard, "\t{:dropped-discarded/%ju} "
 652             "{N:/input datagram%s discarded}\n");
 653         p(ifs6_in_deliver, "\t{:received-valid-packets/%ju} "
 654             "{N:/datagram%s delivered to an upper layer protocol}\n");
 655         p(ifs6_out_forward, "\t{:sent-forwarded/%ju} "
 656             "{N:/datagram%s forwarded to this interface}\n");
 657         p(ifs6_out_request, "\t{:sent-packets/%ju} "
 658             "{N:/datagram%s sent from an upper layer protocol}\n");
 659         p(ifs6_out_discard, "\t{:discard-packets/%ju} "
 660             "{N:/total discarded output datagram%s}\n");
 661         p(ifs6_out_fragok, "\t{:discard-fragments/%ju} "
 662             "{N:/output datagram%s fragmented}\n");
 663         p(ifs6_out_fragfail, "\t{:fragments-failed/%ju} "
 664             "{N:/output datagram%s failed on fragment}\n");
 665         p(ifs6_out_fragcreat, "\t{:fragments-created/%ju} "
 666             "{N:/output datagram%s succeeded on fragment}\n");
 667         p(ifs6_reass_reqd, "\t{:reassembly-required/%ju} "
 668             "{N:/incoming datagram%s fragmented}\n");
 669         p(ifs6_reass_ok, "\t{:reassembled-packets/%ju} "
 670             "{N:/datagram%s reassembled}\n");
 671         p(ifs6_reass_fail, "\t{:reassembly-failed/%ju} "
 672             "{N:/datagram%s failed on reassembly}\n");
 673         p(ifs6_in_mcast, "\t{:received-multicast/%ju} "
 674             "{N:/multicast datagram%s received}\n");
 675         p(ifs6_out_mcast, "\t{:sent-multicast/%ju} "
 676             "{N:/multicast datagram%s sent}\n");
 677
 678  end:
 679         xo_close_instance("ip6-interface-statistics");
 680         close(s);
 681
 682 #undef p
 683 }
 684
 685 static  const char *icmp6names[] = {
 686         "#0",
 687         "unreach",
 688         "packet too big",
 689         "time exceed",
 690         "parameter problem",
 691         "#5",
 692         "#6",
 693         "#7",
 694         "#8",
 695         "#9",
 696         "#10",
 697         "#11",
 698         "#12",
 699         "#13",
 700         "#14",
 701         "#15",
 702         "#16",
 703         "#17",
 704         "#18",
 705         "#19",
 706         "#20",
 707         "#21",
 708         "#22",
 709         "#23",
 710         "#24",
 711         "#25",
 712         "#26",
 713         "#27",
 714         "#28",
 715         "#29",
 716         "#30",
 717         "#31",
 718         "#32",
 719         "#33",
 720         "#34",
 721         "#35",
 722         "#36",
 723         "#37",
 724         "#38",
 725         "#39",
 726         "#40",
 727         "#41",
 728         "#42",
 729         "#43",
 730         "#44",
 731         "#45",
 732         "#46",
 733         "#47",
 734         "#48",
 735         "#49",
 736         "#50",
 737         "#51",
 738         "#52",
 739         "#53",
 740         "#54",
 741         "#55",
 742         "#56",
 743         "#57",
 744         "#58",
 745         "#59",
 746         "#60",
 747         "#61",
 748         "#62",
 749         "#63",
 750         "#64",
 751         "#65",
 752         "#66",
 753         "#67",
 754         "#68",
 755         "#69",
 756         "#70",
 757         "#71",
 758         "#72",
 759         "#73",
 760         "#74",
 761         "#75",
 762         "#76",
 763         "#77",
 764         "#78",
 765         "#79",
 766         "#80",
 767         "#81",
 768         "#82",
 769         "#83",
 770         "#84",
 771         "#85",
 772         "#86",
 773         "#87",
 774         "#88",
 775         "#89",
 776         "#80",
 777         "#91",
 778         "#92",
 779         "#93",
 780         "#94",
 781         "#95",
 782         "#96",
 783         "#97",
 784         "#98",
 785         "#99",
 786         "#100",
 787         "#101",
 788         "#102",
 789         "#103",
 790         "#104",
 791         "#105",
 792         "#106",
 793         "#107",
 794         "#108",
 795         "#109",
 796         "#110",
 797         "#111",
 798         "#112",
 799         "#113",
 800         "#114",
 801         "#115",
 802         "#116",
 803         "#117",
 804         "#118",
 805         "#119",
 806         "#120",
 807         "#121",
 808         "#122",
 809         "#123",
 810         "#124",
 811         "#125",
 812         "#126",
 813         "#127",
 814         "echo",
 815         "echo reply",
 816         "multicast listener query",
 817         "MLDv1 listener report",
 818         "MLDv1 listener done",
 819         "router solicitation",
 820         "router advertisement",
 821         "neighbor solicitation",
 822         "neighbor advertisement",
 823         "redirect",
 824         "router renumbering",
 825         "node information request",
 826         "node information reply",
 827         "inverse neighbor solicitation",
 828         "inverse neighbor advertisement",
 829         "MLDv2 listener report",
 830         "#144",
 831         "#145",
 832         "#146",
 833         "#147",
 834         "#148",
 835         "#149",
 836         "#150",
 837         "#151",
 838         "#152",
 839         "#153",
 840         "#154",
 841         "#155",
 842         "#156",
 843         "#157",
 844         "#158",
 845         "#159",
 846         "#160",
 847         "#161",
 848         "#162",
 849         "#163",
 850         "#164",
 851         "#165",
 852         "#166",
 853         "#167",
 854         "#168",
 855         "#169",
 856         "#170",
 857         "#171",
 858         "#172",
 859         "#173",
 860         "#174",
 861         "#175",
 862         "#176",
 863         "#177",
 864         "#178",
 865         "#179",
 866         "#180",
 867         "#181",
 868         "#182",
 869         "#183",
 870         "#184",
 871         "#185",
 872         "#186",
 873         "#187",
 874         "#188",
 875         "#189",
 876         "#180",
 877         "#191",
 878         "#192",
 879         "#193",
 880         "#194",
 881         "#195",
 882         "#196",
 883         "#197",
 884         "#198",
 885         "#199",
 886         "#200",
 887         "#201",
 888         "#202",
 889         "#203",
 890         "#204",
 891         "#205",
 892         "#206",
 893         "#207",
 894         "#208",
 895         "#209",
 896         "#210",
 897         "#211",
 898         "#212",
 899         "#213",
 900         "#214",
 901         "#215",
 902         "#216",
 903         "#217",
 904         "#218",
 905         "#219",
 906         "#220",
 907         "#221",
 908         "#222",
 909         "#223",
 910         "#224",
 911         "#225",
 912         "#226",
 913         "#227",
 914         "#228",
 915         "#229",
 916         "#230",
 917         "#231",
 918         "#232",
 919         "#233",
 920         "#234",
 921         "#235",
 922         "#236",
 923         "#237",
 924         "#238",
 925         "#239",
 926         "#240",
 927         "#241",
 928         "#242",
 929         "#243",
 930         "#244",
 931         "#245",
 932         "#246",
 933         "#247",
 934         "#248",
 935         "#249",
 936         "#250",
 937         "#251",
 938         "#252",
 939         "#253",
 940         "#254",
 941         "#255",
 942 };
 943
 944 /*
 945  * Dump ICMP6 statistics.
 946  */
 947 void
 948 icmp6_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
 949 {
 950         struct icmp6stat icmp6stat;
 951         int i, first;
 952
 953         if (fetch_stats("net.inet6.icmp6.stats", off, &icmp6stat,
 954             sizeof(icmp6stat), kread_counters) != 0)
 955                 return;
 956
 957         xo_emit("{T:/%s}:\n", name);
 958         xo_open_container(name);
 959
 960 #define p(f, m) if (icmp6stat.f || sflag <= 1) \
 961         xo_emit(m, (uintmax_t)icmp6stat.f, plural(icmp6stat.f))
 962 #define p_5(f, m) if (icmp6stat.f || sflag <= 1) \
 963         xo_emit(m, (uintmax_t)icmp6stat.f)
 964
 965         p(icp6s_error, "\t{:icmp6-calls/%ju} "
 966             "{N:/call%s to icmp6_error}\n");
 967         p(icp6s_canterror, "\t{:errors-not-generated-from-message/%ju} "
 968             "{N:/error%s not generated in response to an icmp6 message}\n");
 969         p(icp6s_toofreq, "\t{:errors-discarded-by-rate-limitation/%ju} "
 970             "{N:/error%s not generated because of rate limitation}\n");
 971 #define NELEM (int)(sizeof(icmp6stat.icp6s_outhist)/sizeof(icmp6stat.icp6s_outhist[0]))
 972         for (first = 1, i = 0; i < NELEM; i++)
 973                 if (icmp6stat.icp6s_outhist[i] != 0) {
 974                         if (first) {
 975                                 xo_open_list("output-histogram");
 976                                 xo_emit("\t{T:Output histogram}:\n");
 977                                 first = 0;
 978                         }
 979                         xo_open_instance("output-histogram");
 980                         xo_emit("\t\t{k:name/%s}: {:count/%ju}\n",
 981                             icmp6names[i],
 982                             (uintmax_t)icmp6stat.icp6s_outhist[i]);
 983                         xo_close_instance("output-histogram");
 984                 }
 985         if (!first)
 986                 xo_close_list("output-histogram");
 987 #undef NELEM
 988
 989         p(icp6s_badcode, "\t{:dropped-bad-code/%ju} "
 990             "{N:/message%s with bad code fields}\n");
 991         p(icp6s_tooshort, "\t{:dropped-too-short/%ju} "
 992             "{N:/message%s < minimum length}\n");
 993         p(icp6s_checksum, "\t{:dropped-bad-checksum/%ju} "
 994             "{N:/bad checksum%s}\n");
 995         p(icp6s_badlen, "\t{:dropped-bad-length/%ju} "
 996             "{N:/message%s with bad length}\n");
 997 #define NELEM (int)(sizeof(icmp6stat.icp6s_inhist)/sizeof(icmp6stat.icp6s_inhist[0]))
 998         for (first = 1, i = 0; i < NELEM; i++)
 999                 if (icmp6stat.icp6s_inhist[i] != 0) {
1000                         if (first) {
1001                                 xo_open_list("input-histogram");
1002                                 xo_emit("\t{T:Input histogram}:\n");
1003                                 first = 0;
1004                         }
1005                         xo_open_instance("input-histogram");
1006                         xo_emit("\t\t{k:name/%s}: {:count/%ju}\n",
1007                             icmp6names[i],
1008                             (uintmax_t)icmp6stat.icp6s_inhist[i]);
1009                         xo_close_instance("input-histogram");
1010                 }
1011         if (!first)
1012                 xo_close_list("input-histogram");
1013 #undef NELEM
1014         xo_emit("\t{T:Histogram of error messages to be generated}:\n");
1015         xo_open_container("errors");
1016         p_5(icp6s_odst_unreach_noroute, "\t\t{:no-route/%ju} "
1017             "{N:/no route}\n");
1018         p_5(icp6s_odst_unreach_admin, "\t\t{:admin-prohibited/%ju} "
1019             "{N:/administratively prohibited}\n");
1020         p_5(icp6s_odst_unreach_beyondscope, "\t\t{:beyond-scope/%ju} "
1021             "{N:/beyond scope}\n");
1022         p_5(icp6s_odst_unreach_addr, "\t\t{:address-unreachable/%ju} "
1023             "{N:/address unreachable}\n");
1024         p_5(icp6s_odst_unreach_noport, "\t\t{:port-unreachable/%ju} "
1025             "{N:/port unreachable}\n");
1026         p_5(icp6s_opacket_too_big, "\t\t{:packet-too-big/%ju} "
1027             "{N:/packet too big}\n");
1028         p_5(icp6s_otime_exceed_transit, "\t\t{:time-exceed-transmit/%ju} "
1029             "{N:/time exceed transit}\n");
1030         p_5(icp6s_otime_exceed_reassembly, "\t\t{:time-exceed-reassembly/%ju} "
1031             "{N:/time exceed reassembly}\n");
1032         p_5(icp6s_oparamprob_header, "\t\t{:bad-header/%ju} "
1033             "{N:/erroneous header field}\n");
1034         p_5(icp6s_oparamprob_nextheader, "\t\t{:bad-next-header/%ju} "
1035             "{N:/unrecognized next header}\n");
1036         p_5(icp6s_oparamprob_option, "\t\t{:bad-option/%ju} "
1037             "{N:/unrecognized option}\n");
1038         p_5(icp6s_oredirect, "\t\t{:redirects/%ju} "
1039             "{N:/redirect}\n");
1040         p_5(icp6s_ounknown, "\t\t{:unknown/%ju} {N:unknown}\n");
1041
1042         p(icp6s_reflect, "\t{:reflect/%ju} "
1043             "{N:/message response%s generated}\n");
1044         p(icp6s_nd_toomanyopt, "\t{:too-many-nd-options/%ju} "
1045             "{N:/message%s with too many ND options}\n");
1046         p(icp6s_nd_badopt, "\t{:bad-nd-options/%ju} "
1047             "{N:/message%s with bad ND options}\n");
1048         p(icp6s_badns, "\t{:bad-neighbor-solicitation/%ju} "
1049             "{N:/bad neighbor solicitation message%s}\n");
1050         p(icp6s_badna, "\t{:bad-neighbor-advertisement/%ju} "
1051             "{N:/bad neighbor advertisement message%s}\n");
1052         p(icp6s_badrs, "\t{:bad-router-solicitation/%ju} "
1053             "{N:/bad router solicitation message%s}\n");
1054         p(icp6s_badra, "\t{:bad-router-advertisement/%ju} "
1055             "{N:/bad router advertisement message%s}\n");
1056         p(icp6s_badredirect, "\t{:bad-redirect/%ju} "
1057             "{N:/bad redirect message%s}\n");
1058         xo_close_container("errors");
1059         p(icp6s_pmtuchg, "\t{:path-mtu-changes/%ju} {N:/path MTU change%s}\n");
1060 #undef p
1061 #undef p_5
1062         xo_close_container(name);
1063 }
1064
1065 /*
1066  * Dump ICMPv6 per-interface statistics based on RFC 2466.
1067  */
1068 void
1069 icmp6_ifstats(char *ifname)
1070 {
1071         struct in6_ifreq ifr;
1072         int s;
1073
1074 #define p(f, m) if (ifr.ifr_ifru.ifru_icmp6stat.f || sflag <= 1)        \
1075         xo_emit(m, (uintmax_t)ifr.ifr_ifru.ifru_icmp6stat.f,            \
1076             plural(ifr.ifr_ifru.ifru_icmp6stat.f))
1077 #define p2(f, m) if (ifr.ifr_ifru.ifru_icmp6stat.f || sflag <= 1)       \
1078         xo_emit(m, (uintmax_t)ifr.ifr_ifru.ifru_icmp6stat.f,            \
1079             pluralies(ifr.ifr_ifru.ifru_icmp6stat.f))
1080
1081         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1082                 xo_warn("Warning: socket(AF_INET6)");
1083                 return;
1084         }
1085
1086         strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1087         if (ioctl(s, SIOCGIFSTAT_ICMP6, (char *)&ifr) < 0) {
1088                 if (errno != EPFNOSUPPORT)
1089                         xo_warn("Warning: ioctl(SIOCGIFSTAT_ICMP6)");
1090                 goto end;
1091         }
1092
1093         xo_emit("{T:/icmp6 on %s}:\n", ifr.ifr_name);
1094
1095         xo_open_instance("icmp6-interface-statistics");
1096         xo_emit("{ke:name/%s}", ifr.ifr_name);
1097         p(ifs6_in_msg, "\t{:received-packets/%ju} "
1098             "{N:/total input message%s}\n");
1099         p(ifs6_in_error, "\t{:received-errors/%ju} "
1100             "{N:/total input error message%s}\n");
1101         p(ifs6_in_dstunreach, "\t{:received-destination-unreachable/%ju} "
1102             "{N:/input destination unreachable error%s}\n");
1103         p(ifs6_in_adminprohib, "\t{:received-admin-prohibited/%ju} "
1104             "{N:/input administratively prohibited error%s}\n");
1105         p(ifs6_in_timeexceed, "\t{:received-time-exceeded/%ju} "
1106             "{N:/input time exceeded error%s}\n");
1107         p(ifs6_in_paramprob, "\t{:received-bad-parameter/%ju} "
1108             "{N:/input parameter problem error%s}\n");
1109         p(ifs6_in_pkttoobig, "\t{:received-packet-too-big/%ju} "
1110             "{N:/input packet too big error%s}\n");
1111         p(ifs6_in_echo, "\t{:received-echo-requests/%ju} "
1112             "{N:/input echo request%s}\n");
1113         p2(ifs6_in_echoreply, "\t{:received-echo-replies/%ju} "
1114             "{N:/input echo repl%s}\n");
1115         p(ifs6_in_routersolicit, "\t{:received-router-solicitation/%ju} "
1116             "{N:/input router solicitation%s}\n");
1117         p(ifs6_in_routeradvert, "\t{:received-router-advertisement/%ju} "
1118             "{N:/input router advertisement%s}\n");
1119         p(ifs6_in_neighborsolicit, "\t{:received-neighbor-solicitation/%ju} "
1120             "{N:/input neighbor solicitation%s}\n");
1121         p(ifs6_in_neighboradvert, "\t{:received-neighbor-advertisement/%ju} "
1122             "{N:/input neighbor advertisement%s}\n");
1123         p(ifs6_in_redirect, "\t{received-redirects/%ju} "
1124             "{N:/input redirect%s}\n");
1125         p2(ifs6_in_mldquery, "\t{:received-mld-queries/%ju} "
1126             "{N:/input MLD quer%s}\n");
1127         p(ifs6_in_mldreport, "\t{:received-mld-reports/%ju} "
1128             "{N:/input MLD report%s}\n");
1129         p(ifs6_in_mlddone, "\t{:received-mld-done/%ju} "
1130             "{N:/input MLD done%s}\n");
1131
1132         p(ifs6_out_msg, "\t{:sent-packets/%ju} "
1133             "{N:/total output message%s}\n");
1134         p(ifs6_out_error, "\t{:sent-errors/%ju} "
1135             "{N:/total output error message%s}\n");
1136         p(ifs6_out_dstunreach, "\t{:sent-destination-unreachable/%ju} "
1137             "{N:/output destination unreachable error%s}\n");
1138         p(ifs6_out_adminprohib, "\t{:sent-admin-prohibited/%ju} "
1139             "{N:/output administratively prohibited error%s}\n");
1140         p(ifs6_out_timeexceed, "\t{:sent-time-exceeded/%ju} "
1141             "{N:/output time exceeded error%s}\n");
1142         p(ifs6_out_paramprob, "\t{:sent-bad-parameter/%ju} "
1143             "{N:/output parameter problem error%s}\n");
1144         p(ifs6_out_pkttoobig, "\t{:sent-packet-too-big/%ju} "
1145             "{N:/output packet too big error%s}\n");
1146         p(ifs6_out_echo, "\t{:sent-echo-requests/%ju} "
1147             "{N:/output echo request%s}\n");
1148         p2(ifs6_out_echoreply, "\t{:sent-echo-replies/%ju} "
1149             "{N:/output echo repl%s}\n");
1150         p(ifs6_out_routersolicit, "\t{:sent-router-solicitation/%ju} "
1151             "{N:/output router solicitation%s}\n");
1152         p(ifs6_out_routeradvert, "\t{:sent-router-advertisement/%ju} "
1153             "{N:/output router advertisement%s}\n");
1154         p(ifs6_out_neighborsolicit, "\t{:sent-neighbor-solicitation/%ju} "
1155             "{N:/output neighbor solicitation%s}\n");
1156         p(ifs6_out_neighboradvert, "\t{:sent-neighbor-advertisement/%ju} "
1157             "{N:/output neighbor advertisement%s}\n");
1158         p(ifs6_out_redirect, "\t{:sent-redirects/%ju} "
1159             "{N:/output redirect%s}\n");
1160         p2(ifs6_out_mldquery, "\t{:sent-mld-queries/%ju} "
1161             "{N:/output MLD quer%s}\n");
1162         p(ifs6_out_mldreport, "\t{:sent-mld-reports/%ju} "
1163             "{N:/output MLD report%s}\n");
1164         p(ifs6_out_mlddone, "\t{:sent-mld-dones/%ju} "
1165             "{N:/output MLD done%s}\n");
1166
1167 end:
1168         xo_close_instance("icmp6-interface-statistics");
1169         close(s);
1170 #undef p
1171 }
1172
1173 /*
1174  * Dump PIM statistics structure.
1175  */
1176 void
1177 pim6_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
1178 {
1179         struct pim6stat pim6stat;
1180
1181         if (fetch_stats("net.inet6.pim.stats", off, &pim6stat,
1182             sizeof(pim6stat), kread) != 0)
1183                 return;
1184
1185         xo_emit("{T:/%s}:\n", name);
1186         xo_open_container(name);
1187
1188 #define p(f, m) if (pim6stat.f || sflag <= 1) \
1189         xo_emit(m, (uintmax_t)pim6stat.f, plural(pim6stat.f))
1190
1191         p(pim6s_rcv_total, "\t{:received-packets/%ju} "
1192             "{N:/message%s received}\n");
1193         p(pim6s_rcv_tooshort, "\t{:dropped-too-short/%ju} "
1194             "{N:/message%s received with too few bytes}\n");
1195         p(pim6s_rcv_badsum, "\t{:dropped-bad-checksum/%ju} "
1196             "{N:/message%s received with bad checksum}\n");
1197         p(pim6s_rcv_badversion, "\t{:dropped-bad-version/%ju} "
1198             "{N:/message%s received with bad version}\n");
1199         p(pim6s_rcv_registers, "\t{:received-registers/%ju} "
1200             "{N:/register%s received}\n");
1201         p(pim6s_rcv_badregisters, "\t{:received-bad-registers/%ju} "
1202             "{N:/bad register%s received}\n");
1203         p(pim6s_snd_registers, "\t{:sent-registers/%ju} "
1204             "{N:/register%s sent}\n");
1205 #undef p
1206         xo_close_container(name);
1207 }
1208
1209 /*
1210  * Dump raw ip6 statistics structure.
1211  */
1212 void
1213 rip6_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
1214 {
1215         struct rip6stat rip6stat;
1216         u_quad_t delivered;
1217
1218         if (fetch_stats("net.inet6.ip6.rip6stats", off, &rip6stat,
1219             sizeof(rip6stat), kread_counters) != 0)
1220                 return;
1221
1222         xo_emit("{T:/%s}:\n", name);
1223         xo_open_container(name);
1224
1225 #define p(f, m) if (rip6stat.f || sflag <= 1) \
1226         xo_emit(m, (uintmax_t)rip6stat.f, plural(rip6stat.f))
1227
1228         p(rip6s_ipackets, "\t{:received-packets/%ju} "
1229             "{N:/message%s received}\n");
1230         p(rip6s_isum, "\t{:input-checksum-computation/%ju} "
1231             "{N:/checksum calculation%s on inbound}\n");
1232         p(rip6s_badsum, "\t{:received-bad-checksum/%ju} "
1233             "{N:/message%s with bad checksum}\n");
1234         p(rip6s_nosock, "\t{:dropped-no-socket/%ju} "
1235             "{N:/message%s dropped due to no socket}\n");
1236         p(rip6s_nosockmcast, "\t{:dropped-multicast-no-socket/%ju} "
1237             "{N:/multicast message%s dropped due to no socket}\n");
1238         p(rip6s_fullsock, "\t{:dropped-full-socket-buffer/%ju} "
1239             "{N:/message%s dropped due to full socket buffers}\n");
1240         delivered = rip6stat.rip6s_ipackets -
1241                     rip6stat.rip6s_badsum -
1242                     rip6stat.rip6s_nosock -
1243                     rip6stat.rip6s_nosockmcast -
1244                     rip6stat.rip6s_fullsock;
1245         if (delivered || sflag <= 1)
1246                 xo_emit("\t{:delivered-packets/%ju} {N:/delivered}\n",
1247                     (uintmax_t)delivered);
1248         p(rip6s_opackets, "\t{:sent-packets/%ju} "
1249             "{N:/datagram%s output}\n");
1250 #undef p
1251         xo_close_container(name);
1252 }
1253
1254 /*
1255  * Pretty print an Internet address (net address + port).
1256  * Take numeric_addr and numeric_port into consideration.
1257  */
1258 #define GETSERVBYPORT6(port, proto, ret)\
1259 {\
1260         if (strcmp((proto), "tcp6") == 0)\
1261                 (ret) = getservbyport((int)(port), "tcp");\
1262         else if (strcmp((proto), "udp6") == 0)\
1263                 (ret) = getservbyport((int)(port), "udp");\
1264         else\
1265                 (ret) = getservbyport((int)(port), (proto));\
1266 };
1267
1268 void
1269 inet6print(const char *container, struct in6_addr *in6, int port,
1270     const char *proto, int numeric)
1271 {
1272         struct servent *sp = 0;
1273         char line[80], *cp;
1274         int width;
1275         size_t alen, plen;
1276
1277         if (container)
1278                 xo_open_container(container);
1279
1280         snprintf(line, sizeof(line), "%.*s.",
1281             Wflag ? 39 : (Aflag && !numeric) ? 12 : 16,
1282             inet6name(in6));
1283         alen = strlen(line);
1284         cp = line + alen;
1285         if (!numeric && port)
1286                 GETSERVBYPORT6(port, proto, sp);
1287         if (sp || port == 0)
1288                 snprintf(cp, sizeof(line) - alen,
1289                     "%.15s", sp ? sp->s_name : "*");
1290         else
1291                 snprintf(cp, sizeof(line) - alen,
1292                     "%d", ntohs((u_short)port));
1293         width = Wflag ? 45 : Aflag ? 18 : 22;
1294
1295         xo_emit("{d:target/%-*.*s} ", width, width, line);
1296
1297         plen = strlen(cp);
1298         alen--;
1299         xo_emit("{e:address/%*.*s}{e:port/%*.*s}", alen, alen, line, plen,
1300             plen, cp);
1301
1302         if (container)
1303                 xo_close_container(container);
1304 }
1305
1306 /*
1307  * Construct an Internet address representation.
1308  * If the numeric_addr has been supplied, give
1309  * numeric value, otherwise try for symbolic name.
1310  */
1311
1312 char *
1313 inet6name(struct in6_addr *ia6)
1314 {
1315         struct sockaddr_in6 sin6;
1316         char hbuf[NI_MAXHOST], *cp;
1317         static char line[NI_MAXHOST];
1318         static char domain[MAXHOSTNAMELEN];
1319         static int first = 1;
1320         int flags, error;
1321
1322         if (IN6_IS_ADDR_UNSPECIFIED(ia6)) {
1323                 strcpy(line, "*");
1324                 return (line);
1325         }
1326         if (first && !numeric_addr) {
1327                 first = 0;
1328                 if (gethostname(domain, sizeof(domain)) == 0 &&
1329                     (cp = strchr(domain, '.')))
1330                         strlcpy(domain, cp + 1, sizeof(domain));
1331                 else
1332                         domain[0] = 0;
1333         }
1334         memset(&sin6, 0, sizeof(sin6));
1335         memcpy(&sin6.sin6_addr, ia6, sizeof(*ia6));
1336         sin6.sin6_family = AF_INET6;
1337         /* XXX: ia6.s6_addr[2] can contain scopeid. */
1338         in6_fillscopeid(&sin6);
1339         flags = (numeric_addr) ? NI_NUMERICHOST : 0;
1340         error = getnameinfo((struct sockaddr *)&sin6, sizeof(sin6), hbuf,
1341             sizeof(hbuf), NULL, 0, flags);
1342         if (error == 0) {
1343                 if ((flags & NI_NUMERICHOST) == 0 &&
1344                     (cp = strchr(hbuf, '.')) &&
1345                     !strcmp(cp + 1, domain))
1346                         *cp = 0;
1347                 strlcpy(line, hbuf, sizeof(line));
1348         } else {
1349                 /* XXX: this should not happen. */
1350                 snprintf(line, sizeof(line), "%s",
1351                         inet_ntop(AF_INET6, (void *)&sin6.sin6_addr, ntop_buf,
1352                                 sizeof(ntop_buf)));
1353         }
1354         return (line);
1355 }
1356 #endif /*INET6*/