usr.bin/netstat/inet.c

   1 /*-
   2  * Copyright (c) 1983, 1988, 1993, 1995
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 4. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #if 0
  31 #ifndef lint
  32 static char sccsid[] = "@(#)inet.c      8.5 (Berkeley) 5/24/95";
  33 #endif /* not lint */
  34 #endif
  35
  36 #include <sys/cdefs.h>
  37 __FBSDID("$FreeBSD$");
  38
  39 #include <sys/param.h>
  40 #include <sys/queue.h>
  41 #include <sys/domain.h>
  42 #include <sys/protosw.h>
  43 #include <sys/socket.h>
  44 #include <sys/socketvar.h>
  45 #include <sys/sysctl.h>
  46
  47 #include <net/route.h>
  48 #include <net/if_arp.h>
  49 #include <netinet/in.h>
  50 #include <netinet/in_systm.h>
  51 #include <netinet/ip.h>
  52 #include <netinet/ip_carp.h>
  53 #ifdef INET6
  54 #include <netinet/ip6.h>
  55 #endif /* INET6 */
  56 #include <netinet/in_pcb.h>
  57 #include <netinet/ip_icmp.h>
  58 #include <netinet/icmp_var.h>
  59 #include <netinet/igmp_var.h>
  60 #include <netinet/ip_var.h>
  61 #include <netinet/pim_var.h>
  62 #include <netinet/tcp.h>
  63 #include <netinet/tcpip.h>
  64 #include <netinet/tcp_seq.h>
  65 #define TCPSTATES
  66 #include <netinet/tcp_fsm.h>
  67 #include <netinet/tcp_timer.h>
  68 #include <netinet/tcp_var.h>
  69 #include <netinet/udp.h>
  70 #include <netinet/udp_var.h>
  71
  72 #include <arpa/inet.h>
  73 #include <err.h>
  74 #include <errno.h>
  75 #include <libutil.h>
  76 #include <netdb.h>
  77 #include <stdint.h>
  78 #include <stdio.h>
  79 #include <stdlib.h>
  80 #include <stdbool.h>
  81 #include <string.h>
  82 #include <unistd.h>
  83 #include <libxo/xo.h>
  84 #include "netstat.h"
  85 #include "nl_defs.h"
  86
  87 #ifdef INET
  88 static void inetprint(const char *, struct in_addr *, int, const char *, int,
  89     const int);
  90 #endif
  91 #ifdef INET6
  92 static int udp_done, tcp_done, sdp_done;
  93 #endif /* INET6 */
  94
  95 static int
  96 pcblist_sysctl(int proto, const char *name, char **bufp, int istcp __unused)
  97 {
  98         const char *mibvar;
  99         char *buf;
 100         size_t len;
 101
 102         switch (proto) {
 103         case IPPROTO_TCP:
 104                 mibvar = "net.inet.tcp.pcblist";
 105                 break;
 106         case IPPROTO_UDP:
 107                 mibvar = "net.inet.udp.pcblist";
 108                 break;
 109         case IPPROTO_DIVERT:
 110                 mibvar = "net.inet.divert.pcblist";
 111                 break;
 112         default:
 113                 mibvar = "net.inet.raw.pcblist";
 114                 break;
 115         }
 116         if (strncmp(name, "sdp", 3) == 0)
 117                 mibvar = "net.inet.sdp.pcblist";
 118         len = 0;
 119         if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) {
 120                 if (errno != ENOENT)
 121                         xo_warn("sysctl: %s", mibvar);
 122                 return (0);
 123         }
 124         if ((buf = malloc(len)) == NULL) {
 125                 xo_warnx("malloc %lu bytes", (u_long)len);
 126                 return (0);
 127         }
 128         if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) {
 129                 xo_warn("sysctl: %s", mibvar);
 130                 free(buf);
 131                 return (0);
 132         }
 133         *bufp = buf;
 134         return (1);
 135 }
 136
 137 /*
 138  * Copied directly from uipc_socket2.c.  We leave out some fields that are in
 139  * nested structures that aren't used to avoid extra work.
 140  */
 141 static void
 142 sbtoxsockbuf(struct sockbuf *sb, struct xsockbuf *xsb)
 143 {
 144         xsb->sb_cc = sb->sb_ccc;
 145         xsb->sb_hiwat = sb->sb_hiwat;
 146         xsb->sb_mbcnt = sb->sb_mbcnt;
 147         xsb->sb_mcnt = sb->sb_mcnt;
 148         xsb->sb_ccnt = sb->sb_ccnt;
 149         xsb->sb_mbmax = sb->sb_mbmax;
 150         xsb->sb_lowat = sb->sb_lowat;
 151         xsb->sb_flags = sb->sb_flags;
 152         xsb->sb_timeo = sb->sb_timeo;
 153 }
 154
 155 int
 156 sotoxsocket(struct socket *so, struct xsocket *xso)
 157 {
 158         struct protosw proto;
 159         struct domain domain;
 160
 161         bzero(xso, sizeof *xso);
 162         xso->xso_len = sizeof *xso;
 163         xso->xso_so = so;
 164         xso->so_type = so->so_type;
 165         xso->so_options = so->so_options;
 166         xso->so_linger = so->so_linger;
 167         xso->so_state = so->so_state;
 168         xso->so_pcb = so->so_pcb;
 169         if (kread((uintptr_t)so->so_proto, &proto, sizeof(proto)) != 0)
 170                 return (-1);
 171         xso->xso_protocol = proto.pr_protocol;
 172         if (kread((uintptr_t)proto.pr_domain, &domain, sizeof(domain)) != 0)
 173                 return (-1);
 174         xso->xso_family = domain.dom_family;
 175         xso->so_qlen = so->so_qlen;
 176         xso->so_incqlen = so->so_incqlen;
 177         xso->so_qlimit = so->so_qlimit;
 178         xso->so_timeo = so->so_timeo;
 179         xso->so_error = so->so_error;
 180         xso->so_oobmark = so->so_oobmark;
 181         sbtoxsockbuf(&so->so_snd, &xso->so_snd);
 182         sbtoxsockbuf(&so->so_rcv, &xso->so_rcv);
 183         return (0);
 184 }
 185
 186 static int
 187 pcblist_kvm(u_long off, char **bufp, int istcp)
 188 {
 189         struct inpcbinfo pcbinfo;
 190         struct inpcbhead listhead;
 191         struct inpcb *inp;
 192         struct xinpcb xi;
 193         struct xinpgen xig;
 194         struct xtcpcb xt;
 195         struct socket so;
 196         struct xsocket *xso;
 197         char *buf, *p;
 198         size_t len;
 199
 200         if (off == 0)
 201                 return (0);
 202         kread(off, &pcbinfo, sizeof(pcbinfo));
 203         if (istcp)
 204                 len = 2 * sizeof(xig) +
 205                     (pcbinfo.ipi_count + pcbinfo.ipi_count / 8) *
 206                     sizeof(struct xtcpcb);
 207         else
 208                 len = 2 * sizeof(xig) +
 209                     (pcbinfo.ipi_count + pcbinfo.ipi_count / 8) *
 210                     sizeof(struct xinpcb);
 211         if ((buf = malloc(len)) == NULL) {
 212                 xo_warnx("malloc %lu bytes", (u_long)len);
 213                 return (0);
 214         }
 215         p = buf;
 216
 217 #define COPYOUT(obj, size) do {                                         \
 218         if (len < (size)) {                                             \
 219                 xo_warnx("buffer size exceeded");                       \
 220                 goto fail;                                              \
 221         }                                                               \
 222         bcopy((obj), p, (size));                                        \
 223         len -= (size);                                                  \
 224         p += (size);                                                    \
 225 } while (0)
 226
 227 #define KREAD(off, buf, len) do {                                       \
 228         if (kread((uintptr_t)(off), (buf), (len)) != 0)                 \
 229                 goto fail;                                              \
 230 } while (0)
 231
 232         /* Write out header. */
 233         xig.xig_len = sizeof xig;
 234         xig.xig_count = pcbinfo.ipi_count;
 235         xig.xig_gen = pcbinfo.ipi_gencnt;
 236         xig.xig_sogen = 0;
 237         COPYOUT(&xig, sizeof xig);
 238
 239         /* Walk the PCB list. */
 240         xt.xt_len = sizeof xt;
 241         xi.xi_len = sizeof xi;
 242         if (istcp)
 243                 xso = &xt.xt_socket;
 244         else
 245                 xso = &xi.xi_socket;
 246         KREAD(pcbinfo.ipi_listhead, &listhead, sizeof(listhead));
 247         LIST_FOREACH(inp, &listhead, inp_list) {
 248                 if (istcp) {
 249                         KREAD(inp, &xt.xt_inp, sizeof(*inp));
 250                         inp = &xt.xt_inp;
 251                 } else {
 252                         KREAD(inp, &xi.xi_inp, sizeof(*inp));
 253                         inp = &xi.xi_inp;
 254                 }
 255
 256                 if (inp->inp_gencnt > pcbinfo.ipi_gencnt)
 257                         continue;
 258
 259                 if (istcp) {
 260                         if (inp->inp_ppcb == NULL)
 261                                 bzero(&xt.xt_tp, sizeof xt.xt_tp);
 262                         else if (inp->inp_flags & INP_TIMEWAIT) {
 263                                 bzero(&xt.xt_tp, sizeof xt.xt_tp);
 264                                 xt.xt_tp.t_state = TCPS_TIME_WAIT;
 265                         } else
 266                                 KREAD(inp->inp_ppcb, &xt.xt_tp,
 267                                     sizeof xt.xt_tp);
 268                 }
 269                 if (inp->inp_socket) {
 270                         KREAD(inp->inp_socket, &so, sizeof(so));
 271                         if (sotoxsocket(&so, xso) != 0)
 272                                 goto fail;
 273                 } else {
 274                         bzero(xso, sizeof(*xso));
 275                         if (istcp)
 276                                 xso->xso_protocol = IPPROTO_TCP;
 277                 }
 278                 if (istcp)
 279                         COPYOUT(&xt, sizeof xt);
 280                 else
 281                         COPYOUT(&xi, sizeof xi);
 282         }
 283
 284         /* Reread the pcbinfo and write out the footer. */
 285         kread(off, &pcbinfo, sizeof(pcbinfo));
 286         xig.xig_count = pcbinfo.ipi_count;
 287         xig.xig_gen = pcbinfo.ipi_gencnt;
 288         COPYOUT(&xig, sizeof xig);
 289
 290         *bufp = buf;
 291         return (1);
 292
 293 fail:
 294         free(buf);
 295         return (0);
 296 #undef COPYOUT
 297 #undef KREAD
 298 }
 299
 300 /*
 301  * Print a summary of connections related to an Internet
 302  * protocol.  For TCP, also give state of connection.
 303  * Listening processes (aflag) are suppressed unless the
 304  * -a (all) flag is specified.
 305  */
 306 void
 307 protopr(u_long off, const char *name, int af1, int proto)
 308 {
 309         int istcp;
 310         static int first = 1;
 311         char *buf;
 312         const char *vchar;
 313         struct tcpcb *tp = NULL;
 314         struct inpcb *inp;
 315         struct xinpgen *xig, *oxig;
 316         struct xsocket *so;
 317         struct xtcp_timer *timer;
 318
 319         istcp = 0;
 320         switch (proto) {
 321         case IPPROTO_TCP:
 322 #ifdef INET6
 323                 if (strncmp(name, "sdp", 3) != 0) {
 324                         if (tcp_done != 0)
 325                                 return;
 326                         else
 327                                 tcp_done = 1;
 328                 } else {
 329                         if (sdp_done != 0)
 330                                 return;
 331                         else
 332                                 sdp_done = 1;
 333                 }
 334 #endif
 335                 istcp = 1;
 336                 break;
 337         case IPPROTO_UDP:
 338 #ifdef INET6
 339                 if (udp_done != 0)
 340                         return;
 341                 else
 342                         udp_done = 1;
 343 #endif
 344                 break;
 345         }
 346         if (live) {
 347                 if (!pcblist_sysctl(proto, name, &buf, istcp))
 348                         return;
 349         } else {
 350                 if (!pcblist_kvm(off, &buf, istcp))
 351                         return;
 352         }
 353
 354         oxig = xig = (struct xinpgen *)buf;
 355         for (xig = (struct xinpgen *)((char *)xig + xig->xig_len);
 356             xig->xig_len > sizeof(struct xinpgen);
 357             xig = (struct xinpgen *)((char *)xig + xig->xig_len)) {
 358                 if (istcp) {
 359                         timer = &((struct xtcpcb *)xig)->xt_timer;
 360                         tp = &((struct xtcpcb *)xig)->xt_tp;
 361                         inp = &((struct xtcpcb *)xig)->xt_inp;
 362                         so = &((struct xtcpcb *)xig)->xt_socket;
 363                 } else {
 364                         inp = &((struct xinpcb *)xig)->xi_inp;
 365                         so = &((struct xinpcb *)xig)->xi_socket;
 366                         timer = NULL;
 367                 }
 368
 369                 /* Ignore sockets for protocols other than the desired one. */
 370                 if (so->xso_protocol != proto)
 371                         continue;
 372
 373                 /* Ignore PCBs which were freed during copyout. */
 374                 if (inp->inp_gencnt > oxig->xig_gen)
 375                         continue;
 376
 377                 if ((af1 == AF_INET && (inp->inp_vflag & INP_IPV4) == 0)
 378 #ifdef INET6
 379                     || (af1 == AF_INET6 && (inp->inp_vflag & INP_IPV6) == 0)
 380 #endif /* INET6 */
 381                     || (af1 == AF_UNSPEC && ((inp->inp_vflag & INP_IPV4) == 0
 382 #ifdef INET6
 383                                           && (inp->inp_vflag & INP_IPV6) == 0
 384 #endif /* INET6 */
 385                         ))
 386                     )
 387                         continue;
 388                 if (!aflag &&
 389                     (
 390                      (istcp && tp->t_state == TCPS_LISTEN)
 391                      || (af1 == AF_INET &&
 392                       inet_lnaof(inp->inp_laddr) == INADDR_ANY)
 393 #ifdef INET6
 394                      || (af1 == AF_INET6 &&
 395                          IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
 396 #endif /* INET6 */
 397                      || (af1 == AF_UNSPEC &&
 398                          (((inp->inp_vflag & INP_IPV4) != 0 &&
 399                            inet_lnaof(inp->inp_laddr) == INADDR_ANY)
 400 #ifdef INET6
 401                           || ((inp->inp_vflag & INP_IPV6) != 0 &&
 402                               IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
 403 #endif
 404                           ))
 405                      ))
 406                         continue;
 407
 408                 if (first) {
 409                         if (!Lflag) {
 410                                 xo_emit("Active Internet connections");
 411                                 if (aflag)
 412                                         xo_emit(" (including servers)");
 413                         } else
 414                                 xo_emit(
 415         "Current listen queue sizes (qlen/incqlen/maxqlen)");
 416                         xo_emit("\n");
 417                         if (Aflag)
 418                                 xo_emit("{T:/%-*s} ", 2 * (int)sizeof(void *),
 419                                     "Tcpcb");
 420                         if (Lflag)
 421                                 xo_emit((Aflag && !Wflag) ?
 422                                     "{T:/%-5.5s} {T:/%-32.32s} {T:/%-18.18s}" :
 423                                     ((!Wflag || af1 == AF_INET) ?
 424                                     "{T:/%-5.5s} {T:/%-32.32s} {T:/%-22.22s}" :
 425                                     "{T:/%-5.5s} {T:/%-32.32s} {T:/%-45.45s}"),
 426                                     "Proto", "Listen", "Local Address");
 427                         else if (Tflag)
 428                                 xo_emit((Aflag && !Wflag) ?
 429     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-18.18s} {T:/%s}" :
 430                                     ((!Wflag || af1 == AF_INET) ?
 431     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-22.22s} {T:/%s}" :
 432     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-45.45s} {T:/%s}"),
 433                                     "Proto", "Rexmit", "OOORcv", "0-win",
 434                                     "Local Address", "Foreign Address");
 435                         else {
 436                                 xo_emit((Aflag && !Wflag) ?
 437     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-18.18s} {T:/%-18.18s}" :
 438                                     ((!Wflag || af1 == AF_INET) ?
 439     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-22.22s} {T:/%-22.22s}" :
 440     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-45.45s} {T:/%-45.45s}"),
 441                                     "Proto", "Recv-Q", "Send-Q",
 442                                     "Local Address", "Foreign Address");
 443                                 if (!xflag && !Rflag)
 444                                         xo_emit(" (state)");
 445                         }
 446                         if (xflag) {
 447                                 xo_emit(" {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} "
 448                                     "{T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} "
 449                                     "{T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} "
 450                                     "{T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s}",
 451                                     "R-MBUF", "S-MBUF", "R-CLUS", "S-CLUS",
 452                                     "R-HIWA", "S-HIWA", "R-LOWA", "S-LOWA",
 453                                     "R-BCNT", "S-BCNT", "R-BMAX", "S-BMAX");
 454                                 xo_emit(" {T:/%7.7s} {T:/%7.7s} {T:/%7.7s} "
 455                                     "{T:/%7.7s} {T:/%7.7s} {T:/%7.7s}",
 456                                     "rexmt", "persist", "keep", "2msl",
 457                                     "delack", "rcvtime");
 458                         } else if (Rflag) {
 459                                 xo_emit("  {T:/%8.8s} {T:/%5.5s}",
 460                                     "flowid", "ftype");
 461                         }
 462                         xo_emit("\n");
 463                         first = 0;
 464                 }
 465                 if (Lflag && so->so_qlimit == 0)
 466                         continue;
 467                 xo_open_instance("socket");
 468                 if (Aflag) {
 469                         if (istcp)
 470                                 xo_emit("{q:address/%*lx} ",
 471                                     2 * (int)sizeof(void *),
 472                                     (u_long)inp->inp_ppcb);
 473                         else
 474                                 xo_emit("{q:adddress/%*lx} ",
 475                                     2 * (int)sizeof(void *),
 476                                     (u_long)so->so_pcb);
 477                 }
 478 #ifdef INET6
 479                 if ((inp->inp_vflag & INP_IPV6) != 0)
 480                         vchar = ((inp->inp_vflag & INP_IPV4) != 0) ?
 481                             "46" : "6";
 482                 else
 483 #endif
 484                 vchar = ((inp->inp_vflag & INP_IPV4) != 0) ?
 485                     "4" : "";
 486                 if (istcp && (tp->t_flags & TF_TOE) != 0)
 487                         xo_emit("{:protocol/%-3.3s%-2.2s/%s%s} ", "toe", vchar);
 488                 else
 489                         xo_emit("{:protocol/%-3.3s%-2.2s/%s%s} ", name, vchar);
 490                 if (Lflag) {
 491                         char buf1[33];
 492
 493                         snprintf(buf1, sizeof buf1, "%u/%u/%u", so->so_qlen,
 494                             so->so_incqlen, so->so_qlimit);
 495                         xo_emit("{:listen-queue-sizes/%-32.32s} ", buf1);
 496                 } else if (Tflag) {
 497                         if (istcp)
 498                                 xo_emit("{:sent-retransmit-packets/%6u} "
 499                                     "{:received-out-of-order-packets/%6u} "
 500                                     "{:sent-zero-window/%6u} ",
 501                                     tp->t_sndrexmitpack, tp->t_rcvoopack,
 502                                     tp->t_sndzerowin);
 503                         else
 504                                 xo_emit("{P:/%21s}", "");
 505                 } else {
 506                         xo_emit("{:receive-bytes-waiting/%6u} "
 507                             "{:send-bytes-waiting/%6u} ",
 508                             so->so_rcv.sb_cc, so->so_snd.sb_cc);
 509                 }
 510                 if (numeric_port) {
 511 #ifdef INET
 512                         if (inp->inp_vflag & INP_IPV4) {
 513                                 inetprint("local", &inp->inp_laddr,
 514                                     (int)inp->inp_lport, name, 1, af1);
 515                                 if (!Lflag)
 516                                         inetprint("remote", &inp->inp_faddr,
 517                                             (int)inp->inp_fport, name, 1, af1);
 518                         }
 519 #endif
 520 #if defined(INET) && defined(INET6)
 521                         else
 522 #endif
 523 #ifdef INET6
 524                         if (inp->inp_vflag & INP_IPV6) {
 525                                 inet6print("local", &inp->in6p_laddr,
 526                                     (int)inp->inp_lport, name, 1);
 527                                 if (!Lflag)
 528                                         inet6print("remote", &inp->in6p_faddr,
 529                                             (int)inp->inp_fport, name, 1);
 530                         } /* else nothing printed now */
 531 #endif /* INET6 */
 532                 } else if (inp->inp_flags & INP_ANONPORT) {
 533 #ifdef INET
 534                         if (inp->inp_vflag & INP_IPV4) {
 535                                 inetprint("local", &inp->inp_laddr,
 536                                     (int)inp->inp_lport, name, 1, af1);
 537                                 if (!Lflag)
 538                                         inetprint("remote", &inp->inp_faddr,
 539                                             (int)inp->inp_fport, name, 0, af1);
 540                         }
 541 #endif
 542 #if defined(INET) && defined(INET6)
 543                         else
 544 #endif
 545 #ifdef INET6
 546                         if (inp->inp_vflag & INP_IPV6) {
 547                                 inet6print("local", &inp->in6p_laddr,
 548                                     (int)inp->inp_lport, name, 1);
 549                                 if (!Lflag)
 550                                         inet6print("remote", &inp->in6p_faddr,
 551                                             (int)inp->inp_fport, name, 0);
 552                         } /* else nothing printed now */
 553 #endif /* INET6 */
 554                 } else {
 555 #ifdef INET
 556                         if (inp->inp_vflag & INP_IPV4) {
 557                                 inetprint("local", &inp->inp_laddr,
 558                                     (int)inp->inp_lport, name, 0, af1);
 559                                 if (!Lflag)
 560                                         inetprint("remote", &inp->inp_faddr,
 561                                             (int)inp->inp_fport, name,
 562                                             inp->inp_lport != inp->inp_fport,
 563                                             af1);
 564                         }
 565 #endif
 566 #if defined(INET) && defined(INET6)
 567                         else
 568 #endif
 569 #ifdef INET6
 570                         if (inp->inp_vflag & INP_IPV6) {
 571                                 inet6print("local", &inp->in6p_laddr,
 572                                     (int)inp->inp_lport, name, 0);
 573                                 if (!Lflag)
 574                                         inet6print("remote", &inp->in6p_faddr,
 575                                             (int)inp->inp_fport, name,
 576                                             inp->inp_lport != inp->inp_fport);
 577                         } /* else nothing printed now */
 578 #endif /* INET6 */
 579                 }
 580                 if (xflag) {
 581                         xo_emit("{:receive-mbufs/%6u} {:send-mbufs/%6u} "
 582                             "{:receive-clusters/%6u} {:send-clusters/%6u} "
 583                             "{:receive-high-water/%6u} {:send-high-water/%6u} "
 584                             "{:receive-low-water/%6u} {:send-low-water/%6u} "
 585                             "{:receive-mbuf-bytes/%6u} {:send-mbuf-bytes/%6u} "
 586                             "{:receive-mbuf-bytes-max/%6u} "
 587                             "{:send-mbuf-bytes-max/%6u}",
 588                             so->so_rcv.sb_mcnt, so->so_snd.sb_mcnt,
 589                             so->so_rcv.sb_ccnt, so->so_snd.sb_ccnt,
 590                             so->so_rcv.sb_hiwat, so->so_snd.sb_hiwat,
 591                             so->so_rcv.sb_lowat, so->so_snd.sb_lowat,
 592                             so->so_rcv.sb_mbcnt, so->so_snd.sb_mbcnt,
 593                             so->so_rcv.sb_mbmax, so->so_snd.sb_mbmax);
 594                         if (timer != NULL)
 595                                 xo_emit(" {:retransmit-timer/%4d.%02d} "
 596                                     "{:persist-timer/%4d.%02d} "
 597                                     "{:keepalive-timer/%4d.%02d} "
 598                                     "{:msl2-timer/%4d.%02d} "
 599                                     "{:delay-ack-timer/%4d.%02d} "
 600                                     "{:inactivity-timer/%4d.%02d}",
 601                                     timer->tt_rexmt / 1000,
 602                                     (timer->tt_rexmt % 1000) / 10,
 603                                     timer->tt_persist / 1000,
 604                                     (timer->tt_persist % 1000) / 10,
 605                                     timer->tt_keep / 1000,
 606                                     (timer->tt_keep % 1000) / 10,
 607                                     timer->tt_2msl / 1000,
 608                                     (timer->tt_2msl % 1000) / 10,
 609                                     timer->tt_delack / 1000,
 610                                     (timer->tt_delack % 1000) / 10,
 611                                     timer->t_rcvtime / 1000,
 612                                     (timer->t_rcvtime % 1000) / 10);
 613                 }
 614                 if (istcp && !Lflag && !xflag && !Tflag && !Rflag) {
 615                         if (tp->t_state < 0 || tp->t_state >= TCP_NSTATES)
 616                                 xo_emit("{:tcp-state/%d}", tp->t_state);
 617                         else {
 618                                 xo_emit("{:tcp-state/%s}",
 619                                     tcpstates[tp->t_state]);
 620 #if defined(TF_NEEDSYN) && defined(TF_NEEDFIN)
 621                                 /* Show T/TCP `hidden state' */
 622                                 if (tp->t_flags & (TF_NEEDSYN|TF_NEEDFIN))
 623                                         xo_emit("{:need-syn-or-fin/*}");
 624 #endif /* defined(TF_NEEDSYN) && defined(TF_NEEDFIN) */
 625                         }
 626                 }
 627                 if (Rflag) {
 628                         /* XXX: is this right Alfred */
 629                         xo_emit(" {:flow-id/%08x} {:flow-type/%5d}",
 630                             inp->inp_flowid,
 631                             inp->inp_flowtype);
 632                 }
 633                 xo_emit("\n");
 634                 xo_close_instance("socket");
 635         }
 636         if (xig != oxig && xig->xig_gen != oxig->xig_gen) {
 637                 if (oxig->xig_count > xig->xig_count) {
 638                         xo_emit("Some {d:lost/%s} sockets may have been "
 639                             "deleted.\n", name);
 640                 } else if (oxig->xig_count < xig->xig_count) {
 641                         xo_emit("Some {d:created/%s} sockets may have been "
 642                             "created.\n", name);
 643                 } else {
 644                         xo_emit("Some {d:changed/%s} sockets may have been "
 645                             "created or deleted.\n", name);
 646                 }
 647         }
 648         free(buf);
 649 }
 650
 651 /*
 652  * Dump TCP statistics structure.
 653  */
 654 void
 655 tcp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
 656 {
 657         struct tcpstat tcpstat;
 658         uint64_t tcps_states[TCP_NSTATES];
 659
 660 #ifdef INET6
 661         if (tcp_done != 0)
 662                 return;
 663         else
 664                 tcp_done = 1;
 665 #endif
 666
 667         if (fetch_stats("net.inet.tcp.stats", off, &tcpstat,
 668             sizeof(tcpstat), kread_counters) != 0)
 669                 return;
 670
 671         if (fetch_stats_ro("net.inet.tcp.states", nl[N_TCPS_STATES].n_value,
 672             &tcps_states, sizeof(tcps_states), kread_counters) != 0)
 673                 return;
 674
 675         xo_open_container("tcp");
 676         xo_emit("{T:/%s}:\n", name);
 677
 678 #define p(f, m) if (tcpstat.f || sflag <= 1)                            \
 679         xo_emit(m, (uintmax_t )tcpstat.f, plural(tcpstat.f))
 680 #define p1a(f, m) if (tcpstat.f || sflag <= 1)                          \
 681         xo_emit(m, (uintmax_t )tcpstat.f)
 682 #define p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1)       \
 683         xo_emit(m, (uintmax_t )tcpstat.f1, plural(tcpstat.f1),          \
 684             (uintmax_t )tcpstat.f2, plural(tcpstat.f2))
 685 #define p2a(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1)      \
 686         xo_emit(m, (uintmax_t )tcpstat.f1, plural(tcpstat.f1),          \
 687             (uintmax_t )tcpstat.f2)
 688 #define p3(f, m) if (tcpstat.f || sflag <= 1)                           \
 689         xo_emit(m, (uintmax_t )tcpstat.f, pluralies(tcpstat.f))
 690
 691         p(tcps_sndtotal, "\t{:sent-packets/%ju} {N:/packet%s sent}\n");
 692         p2(tcps_sndpack,tcps_sndbyte, "\t\t{:sent-data-packets/%ju} "
 693             "{N:/data packet%s} ({:sent-data-bytes/%ju} {N:/byte%s})\n");
 694         p2(tcps_sndrexmitpack, tcps_sndrexmitbyte, "\t\t"
 695             "{:sent-retransmitted-packets/%ju} {N:/data packet%s} "
 696             "({:sent-retransmitted-bytes/%ju} {N:/byte%s}) "
 697             "{N:retransmitted}\n");
 698         p(tcps_sndrexmitbad, "\t\t"
 699             "{:sent-unnecessary-retransmitted-packets/%ju} "
 700             "{N:/data packet%s unnecessarily retransmitted}\n");
 701         p(tcps_mturesent, "\t\t{:sent-resends-by-mtu-discovery/%ju} "
 702             "{N:/resend%s initiated by MTU discovery}\n");
 703         p2a(tcps_sndacks, tcps_delack, "\t\t{:sent-ack-only-packets/%ju} "
 704             "{N:/ack-only packet%s/} ({:sent-packets-delayed/%ju} "
 705             "{N:delayed})\n");
 706         p(tcps_sndurg, "\t\t{:sent-urg-only-packets/%ju} "
 707             "{N:/URG only packet%s}\n");
 708         p(tcps_sndprobe, "\t\t{:sent-window-probe-packets/%ju} "
 709             "{N:/window probe packet%s}\n");
 710         p(tcps_sndwinup, "\t\t{:sent-window-update-packets/%ju} "
 711             "{N:/window update packet%s}\n");
 712         p(tcps_sndctrl, "\t\t{:sent-control-packets/%ju} "
 713             "{N:/control packet%s}\n");
 714         p(tcps_rcvtotal, "\t{:received-packets/%ju} "
 715             "{N:/packet%s received}\n");
 716         p2(tcps_rcvackpack, tcps_rcvackbyte, "\t\t"
 717             "{:received-ack-packets/%ju} {N:/ack%s} "
 718             "{N:(for} {:received-ack-bytes/%ju} {N:/byte%s})\n");
 719         p(tcps_rcvdupack, "\t\t{:received-duplicate-acks/%ju} "
 720             "{N:/duplicate ack%s}\n");
 721         p(tcps_rcvacktoomuch, "\t\t{:received-acks-for-unsent-data/%ju} "
 722             "{N:/ack%s for unsent data}\n");
 723         p2(tcps_rcvpack, tcps_rcvbyte, "\t\t"
 724             "{:received-in-sequence-packets/%ju} {N:/packet%s} "
 725             "({:received-in-sequence-bytes/%ju} {N:/byte%s}) "
 726             "{N:received in-sequence}\n");
 727         p2(tcps_rcvduppack, tcps_rcvdupbyte, "\t\t"
 728             "{:received-completely-duplicate-packets/%ju} "
 729             "{N:/completely duplicate packet%s} "
 730             "({:received-completely-duplicate-bytes/%ju} {N:/byte%s})\n");
 731         p(tcps_pawsdrop, "\t\t{:received-old-duplicate-packets/%ju} "
 732             "{N:/old duplicate packet%s}\n");
 733         p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte, "\t\t"
 734             "{:received-some-duplicate-packets/%ju} "
 735             "{N:/packet%s with some dup. data} "
 736             "({:received-some-duplicate-bytes/%ju} {N:/byte%s duped/})\n");
 737         p2(tcps_rcvoopack, tcps_rcvoobyte, "\t\t{:received-out-of-order/%ju} "
 738             "{N:/out-of-order packet%s} "
 739             "({:received-out-of-order-bytes/%ju} {N:/byte%s})\n");
 740         p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin, "\t\t"
 741             "{:received-after-window-packets/%ju} {N:/packet%s} "
 742             "({:received-after-window-bytes/%ju} {N:/byte%s}) "
 743             "{N:of data after window}\n");
 744         p(tcps_rcvwinprobe, "\t\t{:received-window-probes/%ju} "
 745             "{N:/window probe%s}\n");
 746         p(tcps_rcvwinupd, "\t\t{:receive-window-update-packets/%ju} "
 747             "{N:/window update packet%s}\n");
 748         p(tcps_rcvafterclose, "\t\t{:received-after-close-packets/%ju} "
 749             "{N:/packet%s received after close}\n");
 750         p(tcps_rcvbadsum, "\t\t{:discard-bad-checksum/%ju} "
 751             "{N:/discarded for bad checksum%s}\n");
 752         p(tcps_rcvbadoff, "\t\t{:discard-bad-header-offset/%ju} "
 753             "{N:/discarded for bad header offset field%s}\n");
 754         p1a(tcps_rcvshort, "\t\t{:discard-too-short/%ju} "
 755             "{N:discarded because packet too short}\n");
 756         p1a(tcps_rcvmemdrop, "\t\t{:discard-memory-problems/%ju} "
 757             "{N:discarded due to memory problems}\n");
 758         p(tcps_connattempt, "\t{:connection-requests/%ju} "
 759             "{N:/connection request%s}\n");
 760         p(tcps_accepts, "\t{:connections-accepts/%ju} "
 761             "{N:/connection accept%s}\n");
 762         p(tcps_badsyn, "\t{:bad-connection-attempts/%ju} "
 763             "{N:/bad connection attempt%s}\n");
 764         p(tcps_listendrop, "\t{:listen-queue-overflows/%ju} "
 765             "{N:/listen queue overflow%s}\n");
 766         p(tcps_badrst, "\t{:ignored-in-window-resets/%ju} "
 767             "{N:/ignored RSTs in the window%s}\n");
 768         p(tcps_connects, "\t{:connections-established/%ju} "
 769             "{N:/connection%s established (including accepts)}\n");
 770         p(tcps_usedrtt, "\t\t{:connections-hostcache-rtt/%ju} "
 771             "{N:/time%s used RTT from hostcache}\n");
 772         p(tcps_usedrttvar, "\t\t{:connections-hostcache-rttvar/%ju} "
 773             "{N:/time%s used RTT variance from hostcache}\n");
 774         p(tcps_usedssthresh, "\t\t{:connections-hostcache-ssthresh/%ju} "
 775             "{N:/time%s used slow-start threshold from hostcache}\n");
 776         p2(tcps_closed, tcps_drops, "\t{:connections-closed/%ju} "
 777             "{N:/connection%s closed (including} "
 778             "{:connection-drops/%ju} {N:/drop%s})\n");
 779         p(tcps_cachedrtt, "\t\t{:connections-updated-rtt-on-close/%ju} "
 780             "{N:/connection%s updated cached RTT on close}\n");
 781         p(tcps_cachedrttvar, "\t\t"
 782             "{:connections-updated-variance-on-close/%ju} "
 783             "{N:/connection%s updated cached RTT variance on close}\n");
 784         p(tcps_cachedssthresh, "\t\t"
 785             "{:connections-updated-ssthresh-on-close/%ju} "
 786             "{N:/connection%s updated cached ssthresh on close}\n");
 787         p(tcps_conndrops, "\t{:embryonic-connections-dropped/%ju} "
 788             "{N:/embryonic connection%s dropped}\n");
 789         p2(tcps_rttupdated, tcps_segstimed, "\t{:segments-updated-rtt/%ju} "
 790             "{N:/segment%s updated rtt (of} "
 791             "{:segment-update-attempts/%ju} {N:/attempt%s})\n");
 792         p(tcps_rexmttimeo, "\t{:retransmit-timeouts/%ju} "
 793             "{N:/retransmit timeout%s}\n");
 794         p(tcps_timeoutdrop, "\t\t"
 795             "{:connections-dropped-by-retransmit-timeout/%ju} "
 796             "{N:/connection%s dropped by rexmit timeout}\n");
 797         p(tcps_persisttimeo, "\t{:persist-timeout/%ju} "
 798             "{N:/persist timeout%s}\n");
 799         p(tcps_persistdrop, "\t\t"
 800             "{:connections-dropped-by-persist-timeout/%ju} "
 801             "{N:/connection%s dropped by persist timeout}\n");
 802         p(tcps_finwait2_drops, "\t"
 803             "{:connections-dropped-by-finwait2-timeout/%ju} "
 804             "{N:/Connection%s (fin_wait_2) dropped because of timeout}\n");
 805         p(tcps_keeptimeo, "\t{:keepalive-timeout/%ju} "
 806             "{N:/keepalive timeout%s}\n");
 807         p(tcps_keepprobe, "\t\t{:keepalive-probes/%ju} "
 808             "{N:/keepalive probe%s sent}\n");
 809         p(tcps_keepdrops, "\t\t{:connections-dropped-by-keepalives/%ju} "
 810             "{N:/connection%s dropped by keepalive}\n");
 811         p(tcps_predack, "\t{:ack-header-predictions/%ju} "
 812             "{N:/correct ACK header prediction%s}\n");
 813         p(tcps_preddat, "\t{:data-packet-header-predictions/%ju} "
 814             "{N:/correct data packet header prediction%s}\n");
 815
 816         xo_open_container("syncache");
 817
 818         p3(tcps_sc_added, "\t{:entries-added/%ju} "
 819             "{N:/syncache entr%s added}\n");
 820         p1a(tcps_sc_retransmitted, "\t\t{:retransmitted/%ju} "
 821             "{N:/retransmitted}\n");
 822         p1a(tcps_sc_dupsyn, "\t\t{:duplicates/%ju} {N:/dupsyn}\n");
 823         p1a(tcps_sc_dropped, "\t\t{:dropped/%ju} {N:/dropped}\n");
 824         p1a(tcps_sc_completed, "\t\t{:completed/%ju} {N:/completed}\n");
 825         p1a(tcps_sc_bucketoverflow, "\t\t{:bucket-overflow/%ju} "
 826             "{N:/bucket overflow}\n");
 827         p1a(tcps_sc_cacheoverflow, "\t\t{:cache-overflow/%ju} "
 828             "{N:/cache overflow}\n");
 829         p1a(tcps_sc_reset, "\t\t{:reset/%ju} {N:/reset}\n");
 830         p1a(tcps_sc_stale, "\t\t{:stale/%ju} {N:/stale}\n");
 831         p1a(tcps_sc_aborted, "\t\t{:aborted/%ju} {N:/aborted}\n");
 832         p1a(tcps_sc_badack, "\t\t{:bad-ack/%ju} {N:/badack}\n");
 833         p1a(tcps_sc_unreach, "\t\t{:unreachable/%ju} {N:/unreach}\n");
 834         p(tcps_sc_zonefail, "\t\t{:zone-failures/%ju} {N:/zone failure%s}\n");
 835         p(tcps_sc_sendcookie, "\t{:sent-cookies/%ju} {N:/cookie%s sent}\n");
 836         p(tcps_sc_recvcookie, "\t{:receivd-cookies/%ju} "
 837             "{N:/cookie%s received}\n");
 838
 839         xo_close_container("syncache");
 840
 841         xo_open_container("hostcache");
 842
 843         p3(tcps_hc_added, "\t{:entries-added/%ju} "
 844             "{N:/hostcache entr%s added}\n");
 845         p1a(tcps_hc_bucketoverflow, "\t\t{:buffer-overflows/%ju} "
 846             "{N:/bucket overflow}\n");
 847
 848         xo_close_container("hostcache");
 849
 850         xo_open_container("sack");
 851
 852         p(tcps_sack_recovery_episode, "\t{:recovery-episodes/%ju} "
 853             "{N:/SACK recovery episode%s}\n");
 854         p(tcps_sack_rexmits, "\t{:segment-retransmits/%ju} "
 855             "{N:/segment rexmit%s in SACK recovery episodes}\n");
 856         p(tcps_sack_rexmit_bytes, "\t{:byte-retransmits/%ju} "
 857             "{N:/byte rexmit%s in SACK recovery episodes}\n");
 858         p(tcps_sack_rcv_blocks, "\t{:received-blocks/%ju} "
 859             "{N:/SACK option%s (SACK blocks) received}\n");
 860         p(tcps_sack_send_blocks, "\t{:sent-option-blocks/%ju} "
 861             "{N:/SACK option%s (SACK blocks) sent}\n");
 862         p1a(tcps_sack_sboverflow, "\t{:scoreboard-overflows/%ju} "
 863             "{N:/SACK scoreboard overflow}\n");
 864
 865         xo_close_container("sack");
 866         xo_open_container("ecn");
 867
 868         p(tcps_ecn_ce, "\t{:ce-packets/%ju} "
 869             "{N:/packet%s with ECN CE bit set}\n");
 870         p(tcps_ecn_ect0, "\t{:ect0-packets/%ju} "
 871             "{N:/packet%s with ECN ECT(0) bit set}\n");
 872         p(tcps_ecn_ect1, "\t{:ect1-packets/%ju} "
 873             "{N:/packet%s with ECN ECT(1) bit set}\n");
 874         p(tcps_ecn_shs, "\t{:handshakes/%ju} "
 875             "{N:/successful ECN handshake%s}\n");
 876         p(tcps_ecn_rcwnd, "\t{:congestion-reductions/%ju} "
 877             "{N:/time%s ECN reduced the congestion window}\n");
 878
 879         xo_close_container("ecn");
 880         xo_open_container("tcp-signature");
 881         p(tcps_sig_rcvgoodsig, "\t{:received-good-signature/%ju} "
 882             "{N:/packet%s with matching signature received}\n");
 883         p(tcps_sig_rcvbadsig, "\t{:received-bad-signature/%ju} "
 884             "{N:/packet%s with bad signature received}\n");
 885         p(tcps_sig_err_buildsig, "\t{:failed-make-signature/%ju} "
 886             "{N:/time%s failed to make signature due to no SA}\n");
 887         p(tcps_sig_err_sigopt, "\t{:no-signature-expected/%ju} "
 888             "{N:/time%s unexpected signature received}\n");
 889         p(tcps_sig_err_nosigopt, "\t{:no-signature-provided/%ju} "
 890             "{N:/time%s no signature provided by segment}\n");
 891  #undef p
 892  #undef p1a
 893  #undef p2
 894  #undef p2a
 895  #undef p3
 896         xo_close_container("tcp-signature");
 897
 898         xo_open_container("TCP connection count by state");
 899         xo_emit("{T:/TCP connection count by state}:\n");
 900         for (int i = 0; i < TCP_NSTATES; i++) {
 901                 /*
 902                  * XXXGL: is there a way in libxo to use %s
 903                  * in the "content string" of a format
 904                  * string? I failed to do that, that's why
 905                  * a temporary buffer is used to construct
 906                  * format string for xo_emit().
 907                  */
 908                 char fmtbuf[80];
 909
 910                 if (sflag > 1 && tcps_states[i] == 0)
 911                         continue;
 912                 snprintf(fmtbuf, sizeof(fmtbuf), "\t{:%s/%%ju} "
 913                     "{Np:/connection ,connections} in %s state\n",
 914                     tcpstates[i], tcpstates[i]);
 915                 xo_emit(fmtbuf, (uintmax_t )tcps_states[i]);
 916         }
 917         xo_close_container("TCP connection count by state");
 918
 919         xo_close_container("tcp");
 920 }
 921
 922 /*
 923  * Dump UDP statistics structure.
 924  */
 925 void
 926 udp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
 927 {
 928         struct udpstat udpstat;
 929         uint64_t delivered;
 930
 931 #ifdef INET6
 932         if (udp_done != 0)
 933                 return;
 934         else
 935                 udp_done = 1;
 936 #endif
 937
 938         if (fetch_stats("net.inet.udp.stats", off, &udpstat,
 939             sizeof(udpstat), kread_counters) != 0)
 940                 return;
 941
 942         xo_open_container("udp");
 943         xo_emit("{T:/%s}:\n", name);
 944
 945 #define p(f, m) if (udpstat.f || sflag <= 1) \
 946         xo_emit("\t" m, (uintmax_t)udpstat.f, plural(udpstat.f))
 947 #define p1a(f, m) if (udpstat.f || sflag <= 1) \
 948         xo_emit("\t" m, (uintmax_t)udpstat.f)
 949
 950         p(udps_ipackets, "{:received-datagrams/%ju} "
 951             "{N:/datagram%s received}\n");
 952         p1a(udps_hdrops, "{:dropped-incomplete-headers/%ju} "
 953             "{N:/with incomplete header}\n");
 954         p1a(udps_badlen, "{:dropped-bad-data-length/%ju} "
 955             "{N:/with bad data length field}\n");
 956         p1a(udps_badsum, "{:dropped-bad-checksum/%ju} "
 957             "{N:/with bad checksum}\n");
 958         p1a(udps_nosum, "{:dropped-no-checksum/%ju} "
 959             "{N:/with no checksum}\n");
 960         p1a(udps_noport, "{:dropped-no-socket/%ju} "
 961             "{N:/dropped due to no socket}\n");
 962         p(udps_noportbcast, "{:dropped-broadcast-multicast/%ju} "
 963             "{N:/broadcast\\/multicast datagram%s undelivered}\n");
 964         p1a(udps_fullsock, "{:dropped-full-socket-buffer/%ju} "
 965             "{N:/dropped due to full socket buffers}\n");
 966         p1a(udpps_pcbhashmiss, "{:not-for-hashed-pcb/%ju} "
 967             "{N:/not for hashed pcb}\n");
 968         delivered = udpstat.udps_ipackets -
 969                     udpstat.udps_hdrops -
 970                     udpstat.udps_badlen -
 971                     udpstat.udps_badsum -
 972                     udpstat.udps_noport -
 973                     udpstat.udps_noportbcast -
 974                     udpstat.udps_fullsock;
 975         if (delivered || sflag <= 1)
 976                 xo_emit("\t{:delivered-packets/%ju} {N:/delivered}\n",
 977                     (uint64_t)delivered);
 978         p(udps_opackets, "{:output-packets/%ju} {N:/datagram%s output}\n");
 979         /* the next statistic is cumulative in udps_noportbcast */
 980         p(udps_filtermcast, "{:multicast-source-filter-matches/%ju} "
 981             "{N:/time%s multicast source filter matched}\n");
 982 #undef p
 983 #undef p1a
 984         xo_close_container("udp");
 985 }
 986
 987 /*
 988  * Dump CARP statistics structure.
 989  */
 990 void
 991 carp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
 992 {
 993         struct carpstats carpstat;
 994
 995         if (fetch_stats("net.inet.carp.stats", off, &carpstat,
 996             sizeof(carpstat), kread_counters) != 0)
 997                 return;
 998
 999         xo_open_container(name);
1000         xo_emit("{T:/%s}:\n", name);
1001
1002 #define p(f, m) if (carpstat.f || sflag <= 1) \
1003         xo_emit(m, (uintmax_t)carpstat.f, plural(carpstat.f))
1004 #define p2(f, m) if (carpstat.f || sflag <= 1) \
1005         xo_emit(m, (uintmax_t)carpstat.f)
1006
1007         p(carps_ipackets, "\t{:received-inet-packets/%ju} "
1008             "{N:/packet%s received (IPv4)}\n");
1009         p(carps_ipackets6, "\t{:received-inet6-packets/%ju} "
1010             "{N:/packet%s received (IPv6)}\n");
1011         p(carps_badttl, "\t\t{:dropped-wrong-ttl/%ju} "
1012             "{N:/packet%s discarded for wrong TTL}\n");
1013         p(carps_hdrops, "\t\t{:dropped-short-header/%ju} "
1014             "{N:/packet%s shorter than header}\n");
1015         p(carps_badsum, "\t\t{:dropped-bad-checksum/%ju} "
1016             "{N:/discarded for bad checksum%s}\n");
1017         p(carps_badver, "\t\t{:dropped-bad-version/%ju} "
1018             "{N:/discarded packet%s with a bad version}\n");
1019         p2(carps_badlen, "\t\t{:dropped-short-packet/%ju} "
1020             "{N:/discarded because packet too short}\n");
1021         p2(carps_badauth, "\t\t{:dropped-bad-authentication/%ju} "
1022             "{N:/discarded for bad authentication}\n");
1023         p2(carps_badvhid, "\t\t{:dropped-bad-vhid/%ju} "
1024             "{N:/discarded for bad vhid}\n");
1025         p2(carps_badaddrs, "\t\t{:dropped-bad-address-list/%ju} "
1026             "{N:/discarded because of a bad address list}\n");
1027         p(carps_opackets, "\t{:sent-inet-packets/%ju} "
1028             "{N:/packet%s sent (IPv4)}\n");
1029         p(carps_opackets6, "\t{:sent-inet6-packets/%ju} "
1030             "{N:/packet%s sent (IPv6)}\n");
1031         p2(carps_onomem, "\t\t{:send-failed-memory-error/%ju} "
1032             "{N:/send failed due to mbuf memory error}\n");
1033 #if notyet
1034         p(carps_ostates, "\t\t{:send-state-updates/%s} "
1035             "{N:/state update%s sent}\n");
1036 #endif
1037 #undef p
1038 #undef p2
1039         xo_close_container(name);
1040 }
1041
1042 /*
1043  * Dump IP statistics structure.
1044  */
1045 void
1046 ip_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
1047 {
1048         struct ipstat ipstat;
1049
1050         if (fetch_stats("net.inet.ip.stats", off, &ipstat,
1051             sizeof(ipstat), kread_counters) != 0)
1052                 return;
1053
1054         xo_open_container(name);
1055         xo_emit("{T:/%s}:\n", name);
1056
1057 #define p(f, m) if (ipstat.f || sflag <= 1) \
1058         xo_emit(m, (uintmax_t )ipstat.f, plural(ipstat.f))
1059 #define p1a(f, m) if (ipstat.f || sflag <= 1) \
1060         xo_emit(m, (uintmax_t )ipstat.f)
1061
1062         p(ips_total, "\t{:received-packets/%ju} "
1063             "{N:/total packet%s received}\n");
1064         p(ips_badsum, "\t{:dropped-bad-checksum/%ju} "
1065             "{N:/bad header checksum%s}\n");
1066         p1a(ips_toosmall, "\t{:dropped-below-minimum-size/%ju} "
1067             "{N:/with size smaller than minimum}\n");
1068         p1a(ips_tooshort, "\t{:dropped-short-packets/%ju} "
1069             "{N:/with data size < data length}\n");
1070         p1a(ips_toolong, "\t{:dropped-too-long/%ju} "
1071             "{N:/with ip length > max ip packet size}\n");
1072         p1a(ips_badhlen, "\t{:dropped-short-header-length/%ju} "
1073             "{N:/with header length < data size}\n");
1074         p1a(ips_badlen, "\t{:dropped-short-data/%ju} "
1075             "{N:/with data length < header length}\n");
1076         p1a(ips_badoptions, "\t{:dropped-bad-options/%ju} "
1077             "{N:/with bad options}\n");
1078         p1a(ips_badvers, "\t{:dropped-bad-version/%ju} "
1079             "{N:/with incorrect version number}\n");
1080         p(ips_fragments, "\t{:received-fragments/%ju} "
1081             "{N:/fragment%s received}\n");
1082         p(ips_fragdropped, "\t{:dropped-fragments/%ju} "
1083             "{N:/fragment%s dropped (dup or out of space)}\n");
1084         p(ips_fragtimeout, "\t{:dropped-fragments-after-timeout/%ju} "
1085             "{N:/fragment%s dropped after timeout}\n");
1086         p(ips_reassembled, "\t{:reassembled-packets/%ju} "
1087             "{N:/packet%s reassembled ok}\n");
1088         p(ips_delivered, "\t{:received-local-packets/%ju} "
1089             "{N:/packet%s for this host}\n");
1090         p(ips_noproto, "\t{:dropped-unknown-protocol/%ju} "
1091             "{N:/packet%s for unknown\\/unsupported protocol}\n");
1092         p(ips_forward, "\t{:forwarded-packets/%ju} "
1093             "{N:/packet%s forwarded}");
1094         p(ips_fastforward, " ({:fast-forwarded-packets/%ju} "
1095             "{N:/packet%s fast forwarded})");
1096         if (ipstat.ips_forward || sflag <= 1)
1097                 xo_emit("\n");
1098         p(ips_cantforward, "\t{:packets-cannot-forward/%ju} "
1099             "{N:/packet%s not forwardable}\n");
1100         p(ips_notmember, "\t{:received-unknown-multicast-group/%ju} "
1101             "{N:/packet%s received for unknown multicast group}\n");
1102         p(ips_redirectsent, "\t{:redirects-sent/%ju} "
1103             "{N:/redirect%s sent}\n");
1104         p(ips_localout, "\t{:sent-packets/%ju} "
1105             "{N:/packet%s sent from this host}\n");
1106         p(ips_rawout, "\t{:send-packets-fabricated-header/%ju} "
1107             "{N:/packet%s sent with fabricated ip header}\n");
1108         p(ips_odropped, "\t{:discard-no-mbufs/%ju} "
1109             "{N:/output packet%s dropped due to no bufs, etc.}\n");
1110         p(ips_noroute, "\t{:discard-no-route/%ju} "
1111             "{N:/output packet%s discarded due to no route}\n");
1112         p(ips_fragmented, "\t{:sent-fragments/%ju} "
1113             "{N:/output datagram%s fragmented}\n");
1114         p(ips_ofragments, "\t{:fragments-created/%ju} "
1115             "{N:/fragment%s created}\n");
1116         p(ips_cantfrag, "\t{:discard-cannot-fragment/%ju} "
1117             "{N:/datagram%s that can't be fragmented}\n");
1118         p(ips_nogif, "\t{:discard-tunnel-no-gif/%ju} "
1119             "{N:/tunneling packet%s that can't find gif}\n");
1120         p(ips_badaddr, "\t{:discard-bad-address/%ju} "
1121             "{N:/datagram%s with bad address in header}\n");
1122 #undef p
1123 #undef p1a
1124         xo_close_container(name);
1125 }
1126
1127 /*
1128  * Dump ARP statistics structure.
1129  */
1130 void
1131 arp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
1132 {
1133         struct arpstat arpstat;
1134
1135         if (fetch_stats("net.link.ether.arp.stats", off, &arpstat,
1136             sizeof(arpstat), kread_counters) != 0)
1137                 return;
1138
1139         xo_open_container(name);
1140         xo_emit("{T:/%s}:\n", name);
1141
1142 #define p(f, m) if (arpstat.f || sflag <= 1) \
1143         xo_emit("\t" m, (uintmax_t)arpstat.f, plural(arpstat.f))
1144 #define p2(f, m) if (arpstat.f || sflag <= 1) \
1145         xo_emit("\t" m, (uintmax_t)arpstat.f, pluralies(arpstat.f))
1146
1147         p(txrequests, "{:sent-requests/%ju} {N:/ARP request%s sent}\n");
1148         p2(txreplies, "{:sent-replies/%ju} {N:/ARP repl%s sent}\n");
1149         p(rxrequests, "{:received-requests/%ju} "
1150             "{N:/ARP request%s received}\n");
1151         p2(rxreplies, "{:received-replies/%ju} "
1152             "{N:/ARP repl%s received}\n");
1153         p(received, "{:received-packers/%ju} "
1154             "{N:/ARP packet%s received}\n");
1155         p(dropped, "{:dropped-no-entry/%ju} "
1156             "{N:/total packet%s dropped due to no ARP entry}\n");
1157         p(timeouts, "{:entries-timeout/%ju} "
1158             "{N:/ARP entry%s timed out}\n");
1159         p(dupips, "{:dropped-duplicate-address/%ju} "
1160             "{N:/Duplicate IP%s seen}\n");
1161 #undef p
1162 #undef p2
1163         xo_close_container(name);
1164 }
1165
1166
1167
1168 static  const char *icmpnames[ICMP_MAXTYPE + 1] = {
1169         "echo reply",                   /* RFC 792 */
1170         "#1",
1171         "#2",
1172         "destination unreachable",      /* RFC 792 */
1173         "source quench",                /* RFC 792 */
1174         "routing redirect",             /* RFC 792 */
1175         "#6",
1176         "#7",
1177         "echo",                         /* RFC 792 */
1178         "router advertisement",         /* RFC 1256 */
1179         "router solicitation",          /* RFC 1256 */
1180         "time exceeded",                /* RFC 792 */
1181         "parameter problem",            /* RFC 792 */
1182         "time stamp",                   /* RFC 792 */
1183         "time stamp reply",             /* RFC 792 */
1184         "information request",          /* RFC 792 */
1185         "information request reply",    /* RFC 792 */
1186         "address mask request",         /* RFC 950 */
1187         "address mask reply",           /* RFC 950 */
1188         "#19",
1189         "#20",
1190         "#21",
1191         "#22",
1192         "#23",
1193         "#24",
1194         "#25",
1195         "#26",
1196         "#27",
1197         "#28",
1198         "#29",
1199         "icmp traceroute",              /* RFC 1393 */
1200         "datagram conversion error",    /* RFC 1475 */
1201         "mobile host redirect",
1202         "IPv6 where-are-you",
1203         "IPv6 i-am-here",
1204         "mobile registration req",
1205         "mobile registration reply",
1206         "domain name request",          /* RFC 1788 */
1207         "domain name reply",            /* RFC 1788 */
1208         "icmp SKIP",
1209         "icmp photuris",                /* RFC 2521 */
1210 };
1211
1212 /*
1213  * Dump ICMP statistics.
1214  */
1215 void
1216 icmp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
1217 {
1218         struct icmpstat icmpstat;
1219         size_t len;
1220         int i, first;
1221
1222         if (fetch_stats("net.inet.icmp.stats", off, &icmpstat,
1223             sizeof(icmpstat), kread_counters) != 0)
1224                 return;
1225
1226         xo_open_container(name);
1227         xo_emit("{T:/%s}:\n", name);
1228
1229 #define p(f, m) if (icmpstat.f || sflag <= 1) \
1230         xo_emit(m, icmpstat.f, plural(icmpstat.f))
1231 #define p1a(f, m) if (icmpstat.f || sflag <= 1) \
1232         xo_emit(m, icmpstat.f)
1233 #define p2(f, m) if (icmpstat.f || sflag <= 1) \
1234         xo_emit(m, icmpstat.f, plurales(icmpstat.f))
1235
1236         p(icps_error, "\t{:icmp-calls/%lu} "
1237             "{N:/call%s to icmp_error}\n");
1238         p(icps_oldicmp, "\t{:errors-not-from-message/%lu} "
1239             "{N:/error%s not generated in response to an icmp message}\n");
1240
1241         for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) {
1242                 if (icmpstat.icps_outhist[i] != 0) {
1243                         if (first) {
1244                                 xo_open_list("output-histogram");
1245                                 xo_emit("\tOutput histogram:\n");
1246                                 first = 0;
1247                         }
1248                         xo_open_instance("output-histogram");
1249                         if (icmpnames[i] != NULL)
1250                                 xo_emit("\t\t{k:name/%s}: {:count/%lu}\n",
1251                                     icmpnames[i], icmpstat.icps_outhist[i]);
1252                         else
1253                                 xo_emit("\t\tunknown ICMP #{k:name/%d}: "
1254                                     "{:count/%lu}\n",
1255                                     i, icmpstat.icps_outhist[i]);
1256                         xo_close_instance("output-histogram");
1257                 }
1258         }
1259         if (!first)
1260                 xo_close_list("output-histogram");
1261
1262         p(icps_badcode, "\t{:dropped-bad-code/%lu} "
1263             "{N:/message%s with bad code fields}\n");
1264         p(icps_tooshort, "\t{:dropped-too-short/%lu} "
1265             "{N:/message%s less than the minimum length}\n");
1266         p(icps_checksum, "\t{:dropped-bad-checksum/%lu} "
1267             "{N:/message%s with bad checksum}\n");
1268         p(icps_badlen, "\t{:dropped-bad-length/%lu} "
1269             "{N:/message%s with bad length}\n");
1270         p1a(icps_bmcastecho, "\t{:dropped-multicast-echo/%lu} "
1271             "{N:/multicast echo requests ignored}\n");
1272         p1a(icps_bmcasttstamp, "\t{:dropped-multicast-timestamp/%lu} "
1273             "{N:/multicast timestamp requests ignored}\n");
1274
1275         for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) {
1276                 if (icmpstat.icps_inhist[i] != 0) {
1277                         if (first) {
1278                                 xo_open_list("input-histogram");
1279                                 xo_emit("\tInput histogram:\n");
1280                                 first = 0;
1281                         }
1282                         xo_open_instance("input-histogram");
1283                         if (icmpnames[i] != NULL)
1284                                 xo_emit("\t\t{k:name/%s}: {:count/%lu}\n",
1285                                         icmpnames[i],
1286                                         icmpstat.icps_inhist[i]);
1287                         else
1288                                 xo_emit(
1289                         "\t\tunknown ICMP #{k:name/%d}: {:count/%lu}\n",
1290                                         i, icmpstat.icps_inhist[i]);
1291                         xo_close_instance("input-histogram");
1292                 }
1293         }
1294         if (!first)
1295                 xo_close_list("input-histogram");
1296
1297         p(icps_reflect, "\t{:sent-packets/%lu} "
1298             "{N:/message response%s generated}\n");
1299         p2(icps_badaddr, "\t{:discard-invalid-return-address/%lu} "
1300             "{N:/invalid return address%s}\n");
1301         p(icps_noroute, "\t{:discard-no-route/%lu} "
1302             "{N:/no return route%s}\n");
1303 #undef p
1304 #undef p1a
1305 #undef p2
1306         if (live) {
1307                 len = sizeof i;
1308                 if (sysctlbyname("net.inet.icmp.maskrepl", &i, &len, NULL, 0) <
1309                     0)
1310                         return;
1311                 xo_emit("\tICMP address mask responses are "
1312                     "{q:icmp-address-responses/%sabled}\n", i ? "en" : "dis");
1313         }
1314
1315         xo_close_container(name);
1316 }
1317
1318 /*
1319  * Dump IGMP statistics structure.
1320  */
1321 void
1322 igmp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
1323 {
1324         struct igmpstat igmpstat;
1325
1326         if (fetch_stats("net.inet.igmp.stats", 0, &igmpstat,
1327             sizeof(igmpstat), kread) != 0)
1328                 return;
1329
1330         if (igmpstat.igps_version != IGPS_VERSION_3) {
1331                 xo_warnx("%s: version mismatch (%d != %d)", __func__,
1332                     igmpstat.igps_version, IGPS_VERSION_3);
1333         }
1334         if (igmpstat.igps_len != IGPS_VERSION3_LEN) {
1335                 xo_warnx("%s: size mismatch (%d != %d)", __func__,
1336                     igmpstat.igps_len, IGPS_VERSION3_LEN);
1337         }
1338
1339         xo_open_container(name);
1340         xo_emit("{T:/%s}:\n", name);
1341
1342 #define p64(f, m) if (igmpstat.f || sflag <= 1) \
1343         xo_emit(m, (uintmax_t) igmpstat.f, plural(igmpstat.f))
1344 #define py64(f, m) if (igmpstat.f || sflag <= 1) \
1345         xo_emit(m, (uintmax_t) igmpstat.f, pluralies(igmpstat.f))
1346
1347         p64(igps_rcv_total, "\t{:received-messages/%ju} "
1348             "{N:/message%s received}\n");
1349         p64(igps_rcv_tooshort, "\t{:dropped-too-short/%ju} "
1350             "{N:/message%s received with too few bytes}\n");
1351         p64(igps_rcv_badttl, "\t{:dropped-wrong-ttl/%ju} "
1352             "{N:/message%s received with wrong TTL}\n");
1353         p64(igps_rcv_badsum, "\t{:dropped-bad-checksum/%ju} "
1354             "{N:/message%s received with bad checksum}\n");
1355         py64(igps_rcv_v1v2_queries, "\t{:received-membership-queries/%ju} "
1356             "{N:/V1\\/V2 membership quer%s received}\n");
1357         py64(igps_rcv_v3_queries, "\t{:received-v3-membership-queries/%ju} "
1358             "{N:/V3 membership quer%s received}\n");
1359         py64(igps_rcv_badqueries, "\t{:dropped-membership-queries/%ju} "
1360             "{N:/membership quer%s received with invalid field(s)}\n");
1361         py64(igps_rcv_gen_queries, "\t{:received-general-queries/%ju} "
1362             "{N:/general quer%s received}\n");
1363         py64(igps_rcv_group_queries, "\t{:received-group-queries/%ju} "
1364             "{N:/group quer%s received}\n");
1365         py64(igps_rcv_gsr_queries, "\t{:received-group-source-queries/%ju} "
1366             "{N:/group-source quer%s received}\n");
1367         py64(igps_drop_gsr_queries, "\t{:dropped-group-source-queries/%ju} "
1368             "{N:/group-source quer%s dropped}\n");
1369         p64(igps_rcv_reports, "\t{:received-membership-requests/%ju} "
1370             "{N:/membership report%s received}\n");
1371         p64(igps_rcv_badreports, "\t{:dropped-membership-reports/%ju} "
1372             "{N:/membership report%s received with invalid field(s)}\n");
1373         p64(igps_rcv_ourreports, "\t"
1374             "{:received-membership-reports-matching/%ju} "
1375             "{N:/membership report%s received for groups to which we belong}"
1376             "\n");
1377         p64(igps_rcv_nora, "\t{:received-v3-reports-no-router-alert/%ju} "
1378             "{N:/V3 report%s received without Router Alert}\n");
1379         p64(igps_snd_reports, "\t{:sent-membership-reports/%ju} "
1380             "{N:/membership report%s sent}\n");
1381 #undef p64
1382 #undef py64
1383         xo_close_container(name);
1384 }
1385
1386 /*
1387  * Dump PIM statistics structure.
1388  */
1389 void
1390 pim_stats(u_long off __unused, const char *name, int af1 __unused,
1391     int proto __unused)
1392 {
1393         struct pimstat pimstat;
1394
1395         if (fetch_stats("net.inet.pim.stats", off, &pimstat,
1396             sizeof(pimstat), kread_counters) != 0)
1397                 return;
1398
1399         xo_open_container(name);
1400         xo_emit("{T:/%s}:\n", name);
1401
1402 #define p(f, m) if (pimstat.f || sflag <= 1) \
1403         xo_emit(m, (uintmax_t)pimstat.f, plural(pimstat.f))
1404 #define py(f, m) if (pimstat.f || sflag <= 1) \
1405         xo_emit(m, (uintmax_t)pimstat.f, pimstat.f != 1 ? "ies" : "y")
1406
1407         p(pims_rcv_total_msgs, "\t{:received-messages/%ju} "
1408             "{N:/message%s received}\n");
1409         p(pims_rcv_total_bytes, "\t{:received-bytes/%ju} "
1410             "{N:/byte%s received}\n");
1411         p(pims_rcv_tooshort, "\t{:dropped-too-short/%ju} "
1412             "{N:/message%s received with too few bytes}\n");
1413         p(pims_rcv_badsum, "\t{:dropped-bad-checksum/%ju} "
1414             "{N:/message%s received with bad checksum}\n");
1415         p(pims_rcv_badversion, "\t{:dropped-bad-version/%ju} "
1416             "{N:/message%s received with bad version}\n");
1417         p(pims_rcv_registers_msgs, "\t{:received-data-register-messages/%ju} "
1418             "{N:/data register message%s received}\n");
1419         p(pims_rcv_registers_bytes, "\t{:received-data-register-bytes/%ju} "
1420             "{N:/data register byte%s received}\n");
1421         p(pims_rcv_registers_wrongiif, "\t"
1422             "{:received-data-register-wrong-interface/%ju} "
1423             "{N:/data register message%s received on wrong iif}\n");
1424         p(pims_rcv_badregisters, "\t{:received-bad-registers/%ju} "
1425             "{N:/bad register%s received}\n");
1426         p(pims_snd_registers_msgs, "\t{:sent-data-register-messages/%ju} "
1427             "{N:/data register message%s sent}\n");
1428         p(pims_snd_registers_bytes, "\t{:sent-data-register-bytes/%ju} "
1429             "{N:/data register byte%s sent}\n");
1430 #undef p
1431 #undef py
1432         xo_close_container(name);
1433 }
1434
1435 #ifdef INET
1436 /*
1437  * Pretty print an Internet address (net address + port).
1438  */
1439 static void
1440 inetprint(const char *container, struct in_addr *in, int port,
1441     const char *proto, int num_port, const int af1)
1442 {
1443         struct servent *sp = 0;
1444         char line[80], *cp;
1445         int width;
1446         size_t alen, plen;
1447
1448         if (container)
1449                 xo_open_container(container);
1450
1451         if (Wflag)
1452             snprintf(line, sizeof(line), "%s.", inetname(in));
1453         else
1454             snprintf(line, sizeof(line), "%.*s.",
1455                 (Aflag && !num_port) ? 12 : 16, inetname(in));
1456         alen = strlen(line);
1457         cp = line + alen;
1458         if (!num_port && port)
1459                 sp = getservbyport((int)port, proto);
1460         if (sp || port == 0)
1461                 snprintf(cp, sizeof(line) - alen,
1462                     "%.15s ", sp ? sp->s_name : "*");
1463         else
1464                 snprintf(cp, sizeof(line) - alen,
1465                     "%d ", ntohs((u_short)port));
1466         width = (Aflag && !Wflag) ? 18 :
1467                 ((!Wflag || af1 == AF_INET) ? 22 : 45);
1468         if (Wflag)
1469                 xo_emit("{d:target/%-*s} ", width, line);
1470         else
1471                 xo_emit("{d:target/%-*.*s} ", width, width, line);
1472
1473         plen = strlen(cp) - 1;
1474         alen--;
1475         xo_emit("{e:address/%*.*s}{e:port/%*.*s}", alen, alen, line, plen,
1476             plen, cp);
1477
1478         if (container)
1479                 xo_close_container(container);
1480 }
1481
1482 /*
1483  * Construct an Internet address representation.
1484  * If numeric_addr has been supplied, give
1485  * numeric value, otherwise try for symbolic name.
1486  */
1487 char *
1488 inetname(struct in_addr *inp)
1489 {
1490         char *cp;
1491         static char line[MAXHOSTNAMELEN];
1492         struct hostent *hp;
1493         struct netent *np;
1494
1495         cp = 0;
1496         if (!numeric_addr && inp->s_addr != INADDR_ANY) {
1497                 int net = inet_netof(*inp);
1498                 int lna = inet_lnaof(*inp);
1499
1500                 if (lna == INADDR_ANY) {
1501                         np = getnetbyaddr(net, AF_INET);
1502                         if (np)
1503                                 cp = np->n_name;
1504                 }
1505                 if (cp == NULL) {
1506                         hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET);
1507                         if (hp) {
1508                                 cp = hp->h_name;
1509                                 trimdomain(cp, strlen(cp));
1510                         }
1511                 }
1512         }
1513         if (inp->s_addr == INADDR_ANY)
1514                 strcpy(line, "*");
1515         else if (cp) {
1516                 strlcpy(line, cp, sizeof(line));
1517         } else {
1518                 inp->s_addr = ntohl(inp->s_addr);
1519 #define C(x)    ((u_int)((x) & 0xff))
1520                 snprintf(line, sizeof(line), "%u.%u.%u.%u",
1521                     C(inp->s_addr >> 24), C(inp->s_addr >> 16),
1522                     C(inp->s_addr >> 8), C(inp->s_addr));
1523         }
1524         return (line);
1525 }
1526 #endif