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 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #if 0 35 #ifndef lint 36 static char sccsid[] = "@(#)inet.c 8.5 (Berkeley) 5/24/95"; 37 #endif /* not lint */ 38 #endif 39 40 #include <sys/cdefs.h> 41 __FBSDID("$FreeBSD$"); 42 43 #include <sys/param.h> 44 #include <sys/queue.h> 45 #include <sys/domain.h> 46 #include <sys/protosw.h> 47 #include <sys/socket.h> 48 #include <sys/socketvar.h> 49 #include <sys/sysctl.h> 50 51 #include <net/route.h> 52 #include <netinet/in.h> 53 #include <netinet/in_systm.h> 54 #include <netinet/ip.h> 55 #include <netinet/ip_carp.h> 56 #ifdef INET6 57 #include <netinet/ip6.h> 58 #endif /* INET6 */ 59 #include <netinet/in_pcb.h> 60 #include <netinet/ip_icmp.h> 61 #include <netinet/icmp_var.h> 62 #include <netinet/igmp_var.h> 63 #include <netinet/ip_var.h> 64 #include <netinet/pim_var.h> 65 #include <netinet/tcp.h> 66 #include <netinet/tcpip.h> 67 #include <netinet/tcp_seq.h> 68 #define TCPSTATES 69 #include <netinet/tcp_fsm.h> 70 #include <netinet/tcp_timer.h> 71 #include <netinet/tcp_var.h> 72 #include <netinet/tcp_debug.h> 73 #include <netinet/udp.h> 74 #include <netinet/udp_var.h> 75 76 #include <arpa/inet.h> 77 #include <err.h> 78 #include <errno.h> 79 #include <libutil.h> 80 #include <netdb.h> 81 #include <stdint.h> 82 #include <stdio.h> 83 #include <stdlib.h> 84 #include <string.h> 85 #include <unistd.h> 86 #include "netstat.h" 87 88 char *inetname(struct in_addr *); 89 void inetprint(struct in_addr *, int, const char *, int); 90 #ifdef INET6 91 static int udp_done, tcp_done; 92 #endif /* INET6 */ 93 94 static int 95 pcblist_sysctl(int proto, char **bufp, int istcp) 96 { 97 const char *mibvar; 98 char *buf; 99 size_t len; 100 101 switch (proto) { 102 case IPPROTO_TCP: 103 mibvar = "net.inet.tcp.pcblist"; 104 break; 105 case IPPROTO_UDP: 106 mibvar = "net.inet.udp.pcblist"; 107 break; 108 case IPPROTO_DIVERT: 109 mibvar = "net.inet.divert.pcblist"; 110 break; 111 default: 112 mibvar = "net.inet.raw.pcblist"; 113 break; 114 } 115 116 len = 0; 117 if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) { 118 if (errno != ENOENT) 119 warn("sysctl: %s", mibvar); 120 return (0); 121 } 122 if ((buf = malloc(len)) == 0) { 123 warnx("malloc %lu bytes", (u_long)len); 124 return (0); 125 } 126 if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) { 127 warn("sysctl: %s", mibvar); 128 free(buf); 129 return (0); 130 } 131 *bufp = buf; 132 return (1); 133 } 134 135 /* 136 * Copied directly from uipc_socket2.c. We leave out some fields that are in 137 * nested structures that aren't used to avoid extra work. 138 */ 139 static void 140 sbtoxsockbuf(struct sockbuf *sb, struct xsockbuf *xsb) 141 { 142 xsb->sb_cc = sb->sb_cc; 143 xsb->sb_hiwat = sb->sb_hiwat; 144 xsb->sb_mbcnt = sb->sb_mbcnt; 145 xsb->sb_mcnt = sb->sb_mcnt; 146 xsb->sb_ccnt = sb->sb_ccnt; 147 xsb->sb_mbmax = sb->sb_mbmax; 148 xsb->sb_lowat = sb->sb_lowat; 149 xsb->sb_flags = sb->sb_flags; 150 xsb->sb_timeo = sb->sb_timeo; 151 } 152 153 int 154 sotoxsocket(struct socket *so, struct xsocket *xso) 155 { 156 struct protosw proto; 157 struct domain domain; 158 159 bzero(xso, sizeof *xso); 160 xso->xso_len = sizeof *xso; 161 xso->xso_so = so; 162 xso->so_type = so->so_type; 163 xso->so_options = so->so_options; 164 xso->so_linger = so->so_linger; 165 xso->so_state = so->so_state; 166 xso->so_pcb = so->so_pcb; 167 if (kread((uintptr_t)so->so_proto, &proto, sizeof(proto)) != 0) 168 return (-1); 169 xso->xso_protocol = proto.pr_protocol; 170 if (kread((uintptr_t)proto.pr_domain, &domain, sizeof(domain)) != 0) 171 return (-1); 172 xso->xso_family = domain.dom_family; 173 xso->so_qlen = so->so_qlen; 174 xso->so_incqlen = so->so_incqlen; 175 xso->so_qlimit = so->so_qlimit; 176 xso->so_timeo = so->so_timeo; 177 xso->so_error = so->so_error; 178 xso->so_oobmark = so->so_oobmark; 179 sbtoxsockbuf(&so->so_snd, &xso->so_snd); 180 sbtoxsockbuf(&so->so_rcv, &xso->so_rcv); 181 return (0); 182 } 183 184 static int 185 pcblist_kvm(u_long off, char **bufp, int istcp) 186 { 187 struct inpcbinfo pcbinfo; 188 struct inpcbhead listhead; 189 struct inpcb *inp; 190 struct xinpcb xi; 191 struct xinpgen xig; 192 struct xtcpcb xt; 193 struct socket so; 194 struct xsocket *xso; 195 char *buf, *p; 196 size_t len; 197 198 if (off == 0) 199 return (0); 200 kread(off, &pcbinfo, sizeof(pcbinfo)); 201 if (istcp) 202 len = 2 * sizeof(xig) + 203 (pcbinfo.ipi_count + pcbinfo.ipi_count / 8) * 204 sizeof(struct xtcpcb); 205 else 206 len = 2 * sizeof(xig) + 207 (pcbinfo.ipi_count + pcbinfo.ipi_count / 8) * 208 sizeof(struct xinpcb); 209 if ((buf = malloc(len)) == 0) { 210 warnx("malloc %lu bytes", (u_long)len); 211 return (0); 212 } 213 p = buf; 214 215 #define COPYOUT(obj, size) do { \ 216 if (len < (size)) { \ 217 warnx("buffer size exceeded"); \ 218 goto fail; \ 219 } \ 220 bcopy((obj), p, (size)); \ 221 len -= (size); \ 222 p += (size); \ 223 } while (0) 224 225 #define KREAD(off, buf, len) do { \ 226 if (kread((uintptr_t)(off), (buf), (len)) != 0) \ 227 goto fail; \ 228 } while (0) 229 230 /* Write out header. */ 231 xig.xig_len = sizeof xig; 232 xig.xig_count = pcbinfo.ipi_count; 233 xig.xig_gen = pcbinfo.ipi_gencnt; 234 xig.xig_sogen = 0; 235 COPYOUT(&xig, sizeof xig); 236 237 /* Walk the PCB list. */ 238 xt.xt_len = sizeof xt; 239 xi.xi_len = sizeof xi; 240 if (istcp) 241 xso = &xt.xt_socket; 242 else 243 xso = &xi.xi_socket; 244 KREAD(pcbinfo.ipi_listhead, &listhead, sizeof(listhead)); 245 LIST_FOREACH(inp, &listhead, inp_list) { 246 if (istcp) { 247 KREAD(inp, &xt.xt_inp, sizeof(*inp)); 248 inp = &xt.xt_inp; 249 } else { 250 KREAD(inp, &xi.xi_inp, sizeof(*inp)); 251 inp = &xi.xi_inp; 252 } 253 254 if (inp->inp_gencnt > pcbinfo.ipi_gencnt) 255 continue; 256 257 if (istcp) { 258 if (inp->inp_ppcb == NULL) 259 bzero(&xt.xt_tp, sizeof xt.xt_tp); 260 else if (inp->inp_vflag & INP_TIMEWAIT) { 261 bzero(&xt.xt_tp, sizeof xt.xt_tp); 262 xt.xt_tp.t_state = TCPS_TIME_WAIT; 263 } else 264 KREAD(inp->inp_ppcb, &xt.xt_tp, 265 sizeof xt.xt_tp); 266 } 267 if (inp->inp_socket) { 268 KREAD(inp->inp_socket, &so, sizeof(so)); 269 if (sotoxsocket(&so, xso) != 0) 270 goto fail; 271 } else { 272 bzero(xso, sizeof(*xso)); 273 if (istcp) 274 xso->xso_protocol = IPPROTO_TCP; 275 } 276 if (istcp) 277 COPYOUT(&xt, sizeof xt); 278 else 279 COPYOUT(&xi, sizeof xi); 280 } 281 282 /* Reread the pcbinfo and write out the footer. */ 283 kread(off, &pcbinfo, sizeof(pcbinfo)); 284 xig.xig_count = pcbinfo.ipi_count; 285 xig.xig_gen = pcbinfo.ipi_gencnt; 286 COPYOUT(&xig, sizeof xig); 287 288 *bufp = buf; 289 return (1); 290 291 fail: 292 free(buf); 293 return (0); 294 #undef COPYOUT 295 #undef KREAD 296 } 297 298 /* 299 * Print a summary of connections related to an Internet 300 * protocol. For TCP, also give state of connection. 301 * Listening processes (aflag) are suppressed unless the 302 * -a (all) flag is specified. 303 */ 304 void 305 protopr(u_long off, const char *name, int af1, int proto) 306 { 307 int istcp; 308 static int first = 1; 309 char *buf; 310 const char *vchar; 311 struct tcpcb *tp = NULL; 312 struct inpcb *inp; 313 struct xinpgen *xig, *oxig; 314 struct xsocket *so; 315 316 istcp = 0; 317 switch (proto) { 318 case IPPROTO_TCP: 319 #ifdef INET6 320 if (tcp_done != 0) 321 return; 322 else 323 tcp_done = 1; 324 #endif 325 istcp = 1; 326 break; 327 case IPPROTO_UDP: 328 #ifdef INET6 329 if (udp_done != 0) 330 return; 331 else 332 udp_done = 1; 333 #endif 334 break; 335 } 336 if (live) { 337 if (!pcblist_sysctl(proto, &buf, istcp)) 338 return; 339 } else { 340 if (!pcblist_kvm(off, &buf, istcp)) 341 return; 342 } 343 344 oxig = xig = (struct xinpgen *)buf; 345 for (xig = (struct xinpgen *)((char *)xig + xig->xig_len); 346 xig->xig_len > sizeof(struct xinpgen); 347 xig = (struct xinpgen *)((char *)xig + xig->xig_len)) { 348 if (istcp) { 349 tp = &((struct xtcpcb *)xig)->xt_tp; 350 inp = &((struct xtcpcb *)xig)->xt_inp; 351 so = &((struct xtcpcb *)xig)->xt_socket; 352 } else { 353 inp = &((struct xinpcb *)xig)->xi_inp; 354 so = &((struct xinpcb *)xig)->xi_socket; 355 } 356 357 /* Ignore sockets for protocols other than the desired one. */ 358 if (so->xso_protocol != proto) 359 continue; 360 361 /* Ignore PCBs which were freed during copyout. */ 362 if (inp->inp_gencnt > oxig->xig_gen) 363 continue; 364 365 if ((af1 == AF_INET && (inp->inp_vflag & INP_IPV4) == 0) 366 #ifdef INET6 367 || (af1 == AF_INET6 && (inp->inp_vflag & INP_IPV6) == 0) 368 #endif /* INET6 */ 369 || (af1 == AF_UNSPEC && ((inp->inp_vflag & INP_IPV4) == 0 370 #ifdef INET6 371 && (inp->inp_vflag & INP_IPV6) == 0 372 #endif /* INET6 */ 373 )) 374 ) 375 continue; 376 if (!aflag && 377 ( 378 (istcp && tp->t_state == TCPS_LISTEN) 379 || (af1 == AF_INET && 380 inet_lnaof(inp->inp_laddr) == INADDR_ANY) 381 #ifdef INET6 382 || (af1 == AF_INET6 && 383 IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 384 #endif /* INET6 */ 385 || (af1 == AF_UNSPEC && 386 (((inp->inp_vflag & INP_IPV4) != 0 && 387 inet_lnaof(inp->inp_laddr) == INADDR_ANY) 388 #ifdef INET6 389 || ((inp->inp_vflag & INP_IPV6) != 0 && 390 IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 391 #endif 392 )) 393 )) 394 continue; 395 396 if (first) { 397 if (!Lflag) { 398 printf("Active Internet connections"); 399 if (aflag) 400 printf(" (including servers)"); 401 } else 402 printf( 403 "Current listen queue sizes (qlen/incqlen/maxqlen)"); 404 putchar('\n'); 405 if (Aflag) 406 printf("%-8.8s ", "Tcpcb"); 407 if (Lflag) 408 printf("%-5.5s %-14.14s %-22.22s\n", 409 "Proto", "Listen", "Local Address"); 410 printf((Aflag && !Wflag) ? 411 "%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s" : 412 "%-5.5s %-6.6s %-6.6s %-22.22s %-22.22s", 413 "Proto", "Recv-Q", "Send-Q", 414 "Local Address", "Foreign Address"); 415 if (xflag) 416 printf("%-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %s\n", 417 "R-MBUF", "S-MBUF", "R-CLUS", "S-CLUS", 418 "R-HIWA", "S-HIWA", "R-LOWA", "S-LOWA", 419 "R-BCNT", "S-BCNT", "R-BMAX", "S-BMAX", 420 "(state)"); 421 else 422 printf("(state)\n"); 423 first = 0; 424 } 425 if (Lflag && so->so_qlimit == 0) 426 continue; 427 if (Aflag) { 428 if (istcp) 429 printf("%8lx ", (u_long)inp->inp_ppcb); 430 else 431 printf("%8lx ", (u_long)so->so_pcb); 432 } 433 #ifdef INET6 434 if ((inp->inp_vflag & INP_IPV6) != 0) 435 vchar = ((inp->inp_vflag & INP_IPV4) != 0) ? 436 "46" : "6 "; 437 else 438 #endif 439 vchar = ((inp->inp_vflag & INP_IPV4) != 0) ? 440 "4 " : " "; 441 printf("%-3.3s%-2.2s ", name, vchar); 442 if (Lflag) { 443 char buf1[15]; 444 445 snprintf(buf1, 15, "%d/%d/%d", so->so_qlen, 446 so->so_incqlen, so->so_qlimit); 447 printf("%-14.14s ", buf1); 448 } else { 449 printf("%6u %6u ", so->so_rcv.sb_cc, so->so_snd.sb_cc); 450 } 451 if (numeric_port) { 452 if (inp->inp_vflag & INP_IPV4) { 453 inetprint(&inp->inp_laddr, (int)inp->inp_lport, 454 name, 1); 455 if (!Lflag) 456 inetprint(&inp->inp_faddr, 457 (int)inp->inp_fport, name, 1); 458 } 459 #ifdef INET6 460 else if (inp->inp_vflag & INP_IPV6) { 461 inet6print(&inp->in6p_laddr, 462 (int)inp->inp_lport, name, 1); 463 if (!Lflag) 464 inet6print(&inp->in6p_faddr, 465 (int)inp->inp_fport, name, 1); 466 } /* else nothing printed now */ 467 #endif /* INET6 */ 468 } else if (inp->inp_flags & INP_ANONPORT) { 469 if (inp->inp_vflag & INP_IPV4) { 470 inetprint(&inp->inp_laddr, (int)inp->inp_lport, 471 name, 1); 472 if (!Lflag) 473 inetprint(&inp->inp_faddr, 474 (int)inp->inp_fport, name, 0); 475 } 476 #ifdef INET6 477 else if (inp->inp_vflag & INP_IPV6) { 478 inet6print(&inp->in6p_laddr, 479 (int)inp->inp_lport, name, 1); 480 if (!Lflag) 481 inet6print(&inp->in6p_faddr, 482 (int)inp->inp_fport, name, 0); 483 } /* else nothing printed now */ 484 #endif /* INET6 */ 485 } else { 486 if (inp->inp_vflag & INP_IPV4) { 487 inetprint(&inp->inp_laddr, (int)inp->inp_lport, 488 name, 0); 489 if (!Lflag) 490 inetprint(&inp->inp_faddr, 491 (int)inp->inp_fport, name, 492 inp->inp_lport != inp->inp_fport); 493 } 494 #ifdef INET6 495 else if (inp->inp_vflag & INP_IPV6) { 496 inet6print(&inp->in6p_laddr, 497 (int)inp->inp_lport, name, 0); 498 if (!Lflag) 499 inet6print(&inp->in6p_faddr, 500 (int)inp->inp_fport, name, 501 inp->inp_lport != inp->inp_fport); 502 } /* else nothing printed now */ 503 #endif /* INET6 */ 504 } 505 if (xflag) { 506 if (Lflag) 507 printf("%21s %6u %6u %6u %6u %6u %6u %6u %6u %6u %6u %6u %6u ", 508 " ", 509 so->so_rcv.sb_mcnt, so->so_snd.sb_mcnt, 510 so->so_rcv.sb_ccnt, so->so_snd.sb_ccnt, 511 so->so_rcv.sb_hiwat, so->so_snd.sb_hiwat, 512 so->so_rcv.sb_lowat, so->so_snd.sb_lowat, 513 so->so_rcv.sb_mbcnt, so->so_snd.sb_mbcnt, 514 so->so_rcv.sb_mbmax, so->so_snd.sb_mbmax); 515 else 516 printf("%6u %6u %6u %6u %6u %6u %6u %6u %6u %6u %6u %6u ", 517 so->so_rcv.sb_mcnt, so->so_snd.sb_mcnt, 518 so->so_rcv.sb_ccnt, so->so_snd.sb_ccnt, 519 so->so_rcv.sb_hiwat, so->so_snd.sb_hiwat, 520 so->so_rcv.sb_lowat, so->so_snd.sb_lowat, 521 so->so_rcv.sb_mbcnt, so->so_snd.sb_mbcnt, 522 so->so_rcv.sb_mbmax, so->so_snd.sb_mbmax); 523 } 524 if (istcp && !Lflag) { 525 if (tp->t_state < 0 || tp->t_state >= TCP_NSTATES) 526 printf("%d", tp->t_state); 527 else { 528 printf("%s", tcpstates[tp->t_state]); 529 #if defined(TF_NEEDSYN) && defined(TF_NEEDFIN) 530 /* Show T/TCP `hidden state' */ 531 if (tp->t_flags & (TF_NEEDSYN|TF_NEEDFIN)) 532 putchar('*'); 533 #endif /* defined(TF_NEEDSYN) && defined(TF_NEEDFIN) */ 534 } 535 } 536 putchar('\n'); 537 } 538 if (xig != oxig && xig->xig_gen != oxig->xig_gen) { 539 if (oxig->xig_count > xig->xig_count) { 540 printf("Some %s sockets may have been deleted.\n", 541 name); 542 } else if (oxig->xig_count < xig->xig_count) { 543 printf("Some %s sockets may have been created.\n", 544 name); 545 } else { 546 printf( 547 "Some %s sockets may have been created or deleted.\n", 548 name); 549 } 550 } 551 free(buf); 552 } 553 554 /* 555 * Dump TCP statistics structure. 556 */ 557 void 558 tcp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 559 { 560 struct tcpstat tcpstat, zerostat; 561 size_t len = sizeof tcpstat; 562 563 #ifdef INET6 564 if (tcp_done != 0) 565 return; 566 else 567 tcp_done = 1; 568 #endif 569 570 if (live) { 571 if (zflag) 572 memset(&zerostat, 0, len); 573 if (sysctlbyname("net.inet.tcp.stats", &tcpstat, &len, 574 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 575 warn("sysctl: net.inet.tcp.stats"); 576 return; 577 } 578 } else 579 kread(off, &tcpstat, len); 580 581 printf ("%s:\n", name); 582 583 #define p(f, m) if (tcpstat.f || sflag <= 1) \ 584 printf(m, tcpstat.f, plural(tcpstat.f)) 585 #define p1a(f, m) if (tcpstat.f || sflag <= 1) \ 586 printf(m, tcpstat.f) 587 #define p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ 588 printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2, plural(tcpstat.f2)) 589 #define p2a(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ 590 printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2) 591 #define p3(f, m) if (tcpstat.f || sflag <= 1) \ 592 printf(m, tcpstat.f, pluralies(tcpstat.f)) 593 594 p(tcps_sndtotal, "\t%lu packet%s sent\n"); 595 p2(tcps_sndpack,tcps_sndbyte, "\t\t%lu data packet%s (%lu byte%s)\n"); 596 p2(tcps_sndrexmitpack, tcps_sndrexmitbyte, 597 "\t\t%lu data packet%s (%lu byte%s) retransmitted\n"); 598 p(tcps_sndrexmitbad, 599 "\t\t%lu data packet%s unnecessarily retransmitted\n"); 600 p(tcps_mturesent, "\t\t%lu resend%s initiated by MTU discovery\n"); 601 p2a(tcps_sndacks, tcps_delack, 602 "\t\t%lu ack-only packet%s (%lu delayed)\n"); 603 p(tcps_sndurg, "\t\t%lu URG only packet%s\n"); 604 p(tcps_sndprobe, "\t\t%lu window probe packet%s\n"); 605 p(tcps_sndwinup, "\t\t%lu window update packet%s\n"); 606 p(tcps_sndctrl, "\t\t%lu control packet%s\n"); 607 p(tcps_rcvtotal, "\t%lu packet%s received\n"); 608 p2(tcps_rcvackpack, tcps_rcvackbyte, 609 "\t\t%lu ack%s (for %lu byte%s)\n"); 610 p(tcps_rcvdupack, "\t\t%lu duplicate ack%s\n"); 611 p(tcps_rcvacktoomuch, "\t\t%lu ack%s for unsent data\n"); 612 p2(tcps_rcvpack, tcps_rcvbyte, 613 "\t\t%lu packet%s (%lu byte%s) received in-sequence\n"); 614 p2(tcps_rcvduppack, tcps_rcvdupbyte, 615 "\t\t%lu completely duplicate packet%s (%lu byte%s)\n"); 616 p(tcps_pawsdrop, "\t\t%lu old duplicate packet%s\n"); 617 p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte, 618 "\t\t%lu packet%s with some dup. data (%lu byte%s duped)\n"); 619 p2(tcps_rcvoopack, tcps_rcvoobyte, 620 "\t\t%lu out-of-order packet%s (%lu byte%s)\n"); 621 p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin, 622 "\t\t%lu packet%s (%lu byte%s) of data after window\n"); 623 p(tcps_rcvwinprobe, "\t\t%lu window probe%s\n"); 624 p(tcps_rcvwinupd, "\t\t%lu window update packet%s\n"); 625 p(tcps_rcvafterclose, "\t\t%lu packet%s received after close\n"); 626 p(tcps_rcvbadsum, "\t\t%lu discarded for bad checksum%s\n"); 627 p(tcps_rcvbadoff, "\t\t%lu discarded for bad header offset field%s\n"); 628 p1a(tcps_rcvshort, "\t\t%lu discarded because packet too short\n"); 629 p1a(tcps_rcvmemdrop, "\t\t%lu discarded due to memory problems\n"); 630 p(tcps_connattempt, "\t%lu connection request%s\n"); 631 p(tcps_accepts, "\t%lu connection accept%s\n"); 632 p(tcps_badsyn, "\t%lu bad connection attempt%s\n"); 633 p(tcps_listendrop, "\t%lu listen queue overflow%s\n"); 634 p(tcps_badrst, "\t%lu ignored RSTs in the window%s\n"); 635 p(tcps_connects, "\t%lu connection%s established (including accepts)\n"); 636 p2(tcps_closed, tcps_drops, 637 "\t%lu connection%s closed (including %lu drop%s)\n"); 638 p(tcps_cachedrtt, "\t\t%lu connection%s updated cached RTT on close\n"); 639 p(tcps_cachedrttvar, 640 "\t\t%lu connection%s updated cached RTT variance on close\n"); 641 p(tcps_cachedssthresh, 642 "\t\t%lu connection%s updated cached ssthresh on close\n"); 643 p(tcps_conndrops, "\t%lu embryonic connection%s dropped\n"); 644 p2(tcps_rttupdated, tcps_segstimed, 645 "\t%lu segment%s updated rtt (of %lu attempt%s)\n"); 646 p(tcps_rexmttimeo, "\t%lu retransmit timeout%s\n"); 647 p(tcps_timeoutdrop, "\t\t%lu connection%s dropped by rexmit timeout\n"); 648 p(tcps_persisttimeo, "\t%lu persist timeout%s\n"); 649 p(tcps_persistdrop, "\t\t%lu connection%s dropped by persist timeout\n"); 650 p(tcps_finwait2_drops, 651 "\t%lu Connection%s (fin_wait_2) dropped because of timeout\n"); 652 p(tcps_keeptimeo, "\t%lu keepalive timeout%s\n"); 653 p(tcps_keepprobe, "\t\t%lu keepalive probe%s sent\n"); 654 p(tcps_keepdrops, "\t\t%lu connection%s dropped by keepalive\n"); 655 p(tcps_predack, "\t%lu correct ACK header prediction%s\n"); 656 p(tcps_preddat, "\t%lu correct data packet header prediction%s\n"); 657 658 p3(tcps_sc_added, "\t%lu syncache entr%s added\n"); 659 p1a(tcps_sc_retransmitted, "\t\t%lu retransmitted\n"); 660 p1a(tcps_sc_dupsyn, "\t\t%lu dupsyn\n"); 661 p1a(tcps_sc_dropped, "\t\t%lu dropped\n"); 662 p1a(tcps_sc_completed, "\t\t%lu completed\n"); 663 p1a(tcps_sc_bucketoverflow, "\t\t%lu bucket overflow\n"); 664 p1a(tcps_sc_cacheoverflow, "\t\t%lu cache overflow\n"); 665 p1a(tcps_sc_reset, "\t\t%lu reset\n"); 666 p1a(tcps_sc_stale, "\t\t%lu stale\n"); 667 p1a(tcps_sc_aborted, "\t\t%lu aborted\n"); 668 p1a(tcps_sc_badack, "\t\t%lu badack\n"); 669 p1a(tcps_sc_unreach, "\t\t%lu unreach\n"); 670 p(tcps_sc_zonefail, "\t\t%lu zone failure%s\n"); 671 p(tcps_sc_sendcookie, "\t%lu cookie%s sent\n"); 672 p(tcps_sc_recvcookie, "\t%lu cookie%s received\n"); 673 674 p(tcps_sack_recovery_episode, "\t%lu SACK recovery episode%s\n"); 675 p(tcps_sack_rexmits, 676 "\t%lu segment rexmit%s in SACK recovery episodes\n"); 677 p(tcps_sack_rexmit_bytes, 678 "\t%lu byte rexmit%s in SACK recovery episodes\n"); 679 p(tcps_sack_rcv_blocks, 680 "\t%lu SACK option%s (SACK blocks) received\n"); 681 p(tcps_sack_send_blocks, "\t%lu SACK option%s (SACK blocks) sent\n"); 682 p1a(tcps_sack_sboverflow, "\t%lu SACK scoreboard overflow\n"); 683 684 p(tcps_ecn_ce, "\t%lu packet%s with ECN CE bit set\n"); 685 p(tcps_ecn_ect0, "\t%lu packet%s with ECN ECT(0) bit set\n"); 686 p(tcps_ecn_ect1, "\t%lu packet%s with ECN ECT(1) bit set\n"); 687 p(tcps_ecn_shs, "\t%lu successful ECN handshake%s\n"); 688 p(tcps_ecn_rcwnd, "\t%lu time%s ECN reduced the congestion window\n"); 689 #undef p 690 #undef p1a 691 #undef p2 692 #undef p2a 693 #undef p3 694 } 695 696 /* 697 * Dump UDP statistics structure. 698 */ 699 void 700 udp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 701 { 702 struct udpstat udpstat, zerostat; 703 size_t len = sizeof udpstat; 704 u_long delivered; 705 706 #ifdef INET6 707 if (udp_done != 0) 708 return; 709 else 710 udp_done = 1; 711 #endif 712 713 if (live) { 714 if (zflag) 715 memset(&zerostat, 0, len); 716 if (sysctlbyname("net.inet.udp.stats", &udpstat, &len, 717 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 718 warn("sysctl: net.inet.udp.stats"); 719 return; 720 } 721 } else 722 kread(off, &udpstat, len); 723 724 printf("%s:\n", name); 725 #define p(f, m) if (udpstat.f || sflag <= 1) \ 726 printf(m, udpstat.f, plural(udpstat.f)) 727 #define p1a(f, m) if (udpstat.f || sflag <= 1) \ 728 printf(m, udpstat.f) 729 p(udps_ipackets, "\t%lu datagram%s received\n"); 730 p1a(udps_hdrops, "\t%lu with incomplete header\n"); 731 p1a(udps_badlen, "\t%lu with bad data length field\n"); 732 p1a(udps_badsum, "\t%lu with bad checksum\n"); 733 p1a(udps_nosum, "\t%lu with no checksum\n"); 734 p1a(udps_noport, "\t%lu dropped due to no socket\n"); 735 p(udps_noportbcast, 736 "\t%lu broadcast/multicast datagram%s undelivered\n"); 737 p1a(udps_fullsock, "\t%lu dropped due to full socket buffers\n"); 738 p1a(udpps_pcbhashmiss, "\t%lu not for hashed pcb\n"); 739 delivered = udpstat.udps_ipackets - 740 udpstat.udps_hdrops - 741 udpstat.udps_badlen - 742 udpstat.udps_badsum - 743 udpstat.udps_noport - 744 udpstat.udps_noportbcast - 745 udpstat.udps_fullsock; 746 if (delivered || sflag <= 1) 747 printf("\t%lu delivered\n", delivered); 748 p(udps_opackets, "\t%lu datagram%s output\n"); 749 /* the next statistic is cumulative in udps_noportbcast */ 750 p(udps_filtermcast, 751 "\t%lu time%s multicast source filter matched\n"); 752 #undef p 753 #undef p1a 754 } 755 756 /* 757 * Dump CARP statistics structure. 758 */ 759 void 760 carp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 761 { 762 struct carpstats carpstat, zerostat; 763 size_t len = sizeof(struct carpstats); 764 765 if (live) { 766 if (zflag) 767 memset(&zerostat, 0, len); 768 if (sysctlbyname("net.inet.carp.stats", &carpstat, &len, 769 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 770 if (errno != ENOENT) 771 warn("sysctl: net.inet.carp.stats"); 772 return; 773 } 774 } else { 775 if (off == 0) 776 return; 777 kread(off, &carpstat, len); 778 } 779 780 printf("%s:\n", name); 781 782 #define p(f, m) if (carpstat.f || sflag <= 1) \ 783 printf(m, (uintmax_t)carpstat.f, plural(carpstat.f)) 784 #define p2(f, m) if (carpstat.f || sflag <= 1) \ 785 printf(m, (uintmax_t)carpstat.f) 786 787 p(carps_ipackets, "\t%ju packet%s received (IPv4)\n"); 788 p(carps_ipackets6, "\t%ju packet%s received (IPv6)\n"); 789 p(carps_badttl, "\t\t%ju packet%s discarded for wrong TTL\n"); 790 p(carps_hdrops, "\t\t%ju packet%s shorter than header\n"); 791 p(carps_badsum, "\t\t%ju discarded for bad checksum%s\n"); 792 p(carps_badver, "\t\t%ju discarded packet%s with a bad version\n"); 793 p2(carps_badlen, "\t\t%ju discarded because packet too short\n"); 794 p2(carps_badauth, "\t\t%ju discarded for bad authentication\n"); 795 p2(carps_badvhid, "\t\t%ju discarded for bad vhid\n"); 796 p2(carps_badaddrs, "\t\t%ju discarded because of a bad address list\n"); 797 p(carps_opackets, "\t%ju packet%s sent (IPv4)\n"); 798 p(carps_opackets6, "\t%ju packet%s sent (IPv6)\n"); 799 p2(carps_onomem, "\t\t%ju send failed due to mbuf memory error\n"); 800 #if notyet 801 p(carps_ostates, "\t\t%s state update%s sent\n"); 802 #endif 803 #undef p 804 #undef p2 805 } 806 807 /* 808 * Dump IP statistics structure. 809 */ 810 void 811 ip_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 812 { 813 struct ipstat ipstat, zerostat; 814 size_t len = sizeof ipstat; 815 816 if (live) { 817 if (zflag) 818 memset(&zerostat, 0, len); 819 if (sysctlbyname("net.inet.ip.stats", &ipstat, &len, 820 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 821 warn("sysctl: net.inet.ip.stats"); 822 return; 823 } 824 } else 825 kread(off, &ipstat, len); 826 827 printf("%s:\n", name); 828 829 #define p(f, m) if (ipstat.f || sflag <= 1) \ 830 printf(m, ipstat.f, plural(ipstat.f)) 831 #define p1a(f, m) if (ipstat.f || sflag <= 1) \ 832 printf(m, ipstat.f) 833 834 p(ips_total, "\t%lu total packet%s received\n"); 835 p(ips_badsum, "\t%lu bad header checksum%s\n"); 836 p1a(ips_toosmall, "\t%lu with size smaller than minimum\n"); 837 p1a(ips_tooshort, "\t%lu with data size < data length\n"); 838 p1a(ips_toolong, "\t%lu with ip length > max ip packet size\n"); 839 p1a(ips_badhlen, "\t%lu with header length < data size\n"); 840 p1a(ips_badlen, "\t%lu with data length < header length\n"); 841 p1a(ips_badoptions, "\t%lu with bad options\n"); 842 p1a(ips_badvers, "\t%lu with incorrect version number\n"); 843 p(ips_fragments, "\t%lu fragment%s received\n"); 844 p(ips_fragdropped, "\t%lu fragment%s dropped (dup or out of space)\n"); 845 p(ips_fragtimeout, "\t%lu fragment%s dropped after timeout\n"); 846 p(ips_reassembled, "\t%lu packet%s reassembled ok\n"); 847 p(ips_delivered, "\t%lu packet%s for this host\n"); 848 p(ips_noproto, "\t%lu packet%s for unknown/unsupported protocol\n"); 849 p(ips_forward, "\t%lu packet%s forwarded"); 850 p(ips_fastforward, " (%lu packet%s fast forwarded)"); 851 if (ipstat.ips_forward || sflag <= 1) 852 putchar('\n'); 853 p(ips_cantforward, "\t%lu packet%s not forwardable\n"); 854 p(ips_notmember, 855 "\t%lu packet%s received for unknown multicast group\n"); 856 p(ips_redirectsent, "\t%lu redirect%s sent\n"); 857 p(ips_localout, "\t%lu packet%s sent from this host\n"); 858 p(ips_rawout, "\t%lu packet%s sent with fabricated ip header\n"); 859 p(ips_odropped, 860 "\t%lu output packet%s dropped due to no bufs, etc.\n"); 861 p(ips_noroute, "\t%lu output packet%s discarded due to no route\n"); 862 p(ips_fragmented, "\t%lu output datagram%s fragmented\n"); 863 p(ips_ofragments, "\t%lu fragment%s created\n"); 864 p(ips_cantfrag, "\t%lu datagram%s that can't be fragmented\n"); 865 p(ips_nogif, "\t%lu tunneling packet%s that can't find gif\n"); 866 p(ips_badaddr, "\t%lu datagram%s with bad address in header\n"); 867 #undef p 868 #undef p1a 869 } 870 871 static const char *icmpnames[ICMP_MAXTYPE + 1] = { 872 "echo reply", /* RFC 792 */ 873 "#1", 874 "#2", 875 "destination unreachable", /* RFC 792 */ 876 "source quench", /* RFC 792 */ 877 "routing redirect", /* RFC 792 */ 878 "#6", 879 "#7", 880 "echo", /* RFC 792 */ 881 "router advertisement", /* RFC 1256 */ 882 "router solicitation", /* RFC 1256 */ 883 "time exceeded", /* RFC 792 */ 884 "parameter problem", /* RFC 792 */ 885 "time stamp", /* RFC 792 */ 886 "time stamp reply", /* RFC 792 */ 887 "information request", /* RFC 792 */ 888 "information request reply", /* RFC 792 */ 889 "address mask request", /* RFC 950 */ 890 "address mask reply", /* RFC 950 */ 891 "#19", 892 "#20", 893 "#21", 894 "#22", 895 "#23", 896 "#24", 897 "#25", 898 "#26", 899 "#27", 900 "#28", 901 "#29", 902 "icmp traceroute", /* RFC 1393 */ 903 "datagram conversion error", /* RFC 1475 */ 904 "mobile host redirect", 905 "IPv6 where-are-you", 906 "IPv6 i-am-here", 907 "mobile registration req", 908 "mobile registration reply", 909 "domain name request", /* RFC 1788 */ 910 "domain name reply", /* RFC 1788 */ 911 "icmp SKIP", 912 "icmp photuris", /* RFC 2521 */ 913 }; 914 915 /* 916 * Dump ICMP statistics. 917 */ 918 void 919 icmp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 920 { 921 struct icmpstat icmpstat, zerostat; 922 int i, first; 923 size_t len; 924 925 len = sizeof icmpstat; 926 if (live) { 927 if (zflag) 928 memset(&zerostat, 0, len); 929 if (sysctlbyname("net.inet.icmp.stats", &icmpstat, &len, 930 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 931 warn("sysctl: net.inet.icmp.stats"); 932 return; 933 } 934 } else 935 kread(off, &icmpstat, len); 936 937 printf("%s:\n", name); 938 939 #define p(f, m) if (icmpstat.f || sflag <= 1) \ 940 printf(m, icmpstat.f, plural(icmpstat.f)) 941 #define p1a(f, m) if (icmpstat.f || sflag <= 1) \ 942 printf(m, icmpstat.f) 943 #define p2(f, m) if (icmpstat.f || sflag <= 1) \ 944 printf(m, icmpstat.f, plurales(icmpstat.f)) 945 946 p(icps_error, "\t%lu call%s to icmp_error\n"); 947 p(icps_oldicmp, 948 "\t%lu error%s not generated in response to an icmp message\n"); 949 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 950 if (icmpstat.icps_outhist[i] != 0) { 951 if (first) { 952 printf("\tOutput histogram:\n"); 953 first = 0; 954 } 955 if (icmpnames[i] != NULL) 956 printf("\t\t%s: %lu\n", icmpnames[i], 957 icmpstat.icps_outhist[i]); 958 else 959 printf("\t\tunknown ICMP #%d: %lu\n", i, 960 icmpstat.icps_outhist[i]); 961 } 962 p(icps_badcode, "\t%lu message%s with bad code fields\n"); 963 p(icps_tooshort, "\t%lu message%s less than the minimum length\n"); 964 p(icps_checksum, "\t%lu message%s with bad checksum\n"); 965 p(icps_badlen, "\t%lu message%s with bad length\n"); 966 p1a(icps_bmcastecho, "\t%lu multicast echo requests ignored\n"); 967 p1a(icps_bmcasttstamp, "\t%lu multicast timestamp requests ignored\n"); 968 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 969 if (icmpstat.icps_inhist[i] != 0) { 970 if (first) { 971 printf("\tInput histogram:\n"); 972 first = 0; 973 } 974 if (icmpnames[i] != NULL) 975 printf("\t\t%s: %lu\n", icmpnames[i], 976 icmpstat.icps_inhist[i]); 977 else 978 printf("\t\tunknown ICMP #%d: %lu\n", i, 979 icmpstat.icps_inhist[i]); 980 } 981 p(icps_reflect, "\t%lu message response%s generated\n"); 982 p2(icps_badaddr, "\t%lu invalid return address%s\n"); 983 p(icps_noroute, "\t%lu no return route%s\n"); 984 #undef p 985 #undef p1a 986 #undef p2 987 if (live) { 988 len = sizeof i; 989 if (sysctlbyname("net.inet.icmp.maskrepl", &i, &len, NULL, 0) < 990 0) 991 return; 992 printf("\tICMP address mask responses are %sabled\n", 993 i ? "en" : "dis"); 994 } 995 } 996 997 /* 998 * Dump IGMP statistics structure. 999 */ 1000 void 1001 igmp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 1002 { 1003 struct igmpstat igmpstat, zerostat; 1004 size_t len = sizeof igmpstat; 1005 1006 if (live) { 1007 if (zflag) 1008 memset(&zerostat, 0, len); 1009 if (sysctlbyname("net.inet.igmp.stats", &igmpstat, &len, 1010 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 1011 warn("sysctl: net.inet.igmp.stats"); 1012 return; 1013 } 1014 } else 1015 kread(off, &igmpstat, len); 1016 1017 printf("%s:\n", name); 1018 1019 #define p(f, m) if (igmpstat.f || sflag <= 1) \ 1020 printf(m, igmpstat.f, plural(igmpstat.f)) 1021 #define py(f, m) if (igmpstat.f || sflag <= 1) \ 1022 printf(m, igmpstat.f, igmpstat.f != 1 ? "ies" : "y") 1023 p(igps_rcv_total, "\t%u message%s received\n"); 1024 p(igps_rcv_tooshort, "\t%u message%s received with too few bytes\n"); 1025 p(igps_rcv_badsum, "\t%u message%s received with bad checksum\n"); 1026 py(igps_rcv_queries, "\t%u membership quer%s received\n"); 1027 py(igps_rcv_badqueries, 1028 "\t%u membership quer%s received with invalid field(s)\n"); 1029 p(igps_rcv_reports, "\t%u membership report%s received\n"); 1030 p(igps_rcv_badreports, 1031 "\t%u membership report%s received with invalid field(s)\n"); 1032 p(igps_rcv_ourreports, 1033 "\t%u membership report%s received for groups to which we belong\n"); 1034 p(igps_snd_reports, "\t%u membership report%s sent\n"); 1035 #undef p 1036 #undef py 1037 } 1038 1039 /* 1040 * Dump PIM statistics structure. 1041 */ 1042 void 1043 pim_stats(u_long off __unused, const char *name, int af1 __unused, 1044 int proto __unused) 1045 { 1046 struct pimstat pimstat, zerostat; 1047 size_t len = sizeof pimstat; 1048 1049 if (live) { 1050 if (zflag) 1051 memset(&zerostat, 0, len); 1052 if (sysctlbyname("net.inet.pim.stats", &pimstat, &len, 1053 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 1054 if (errno != ENOENT) 1055 warn("sysctl: net.inet.pim.stats"); 1056 return; 1057 } 1058 } else { 1059 if (off == 0) 1060 return; 1061 kread(off, &pimstat, len); 1062 } 1063 1064 printf("%s:\n", name); 1065 1066 #define p(f, m) if (pimstat.f || sflag <= 1) \ 1067 printf(m, (uintmax_t)pimstat.f, plural(pimstat.f)) 1068 #define py(f, m) if (pimstat.f || sflag <= 1) \ 1069 printf(m, (uintmax_t)pimstat.f, pimstat.f != 1 ? "ies" : "y") 1070 p(pims_rcv_total_msgs, "\t%ju message%s received\n"); 1071 p(pims_rcv_total_bytes, "\t%ju byte%s received\n"); 1072 p(pims_rcv_tooshort, "\t%ju message%s received with too few bytes\n"); 1073 p(pims_rcv_badsum, "\t%ju message%s received with bad checksum\n"); 1074 p(pims_rcv_badversion, "\t%ju message%s received with bad version\n"); 1075 p(pims_rcv_registers_msgs, "\t%ju data register message%s received\n"); 1076 p(pims_rcv_registers_bytes, "\t%ju data register byte%s received\n"); 1077 p(pims_rcv_registers_wrongiif, 1078 "\t%ju data register message%s received on wrong iif\n"); 1079 p(pims_rcv_badregisters, "\t%ju bad register%s received\n"); 1080 p(pims_snd_registers_msgs, "\t%ju data register message%s sent\n"); 1081 p(pims_snd_registers_bytes, "\t%ju data register byte%s sent\n"); 1082 #undef p 1083 #undef py 1084 } 1085 1086 /* 1087 * Pretty print an Internet address (net address + port). 1088 */ 1089 void 1090 inetprint(struct in_addr *in, int port, const char *proto, int num_port) 1091 { 1092 struct servent *sp = 0; 1093 char line[80], *cp; 1094 int width; 1095 1096 if (Wflag) 1097 sprintf(line, "%s.", inetname(in)); 1098 else 1099 sprintf(line, "%.*s.", (Aflag && !num_port) ? 12 : 16, inetname(in)); 1100 cp = index(line, '\0'); 1101 if (!num_port && port) 1102 sp = getservbyport((int)port, proto); 1103 if (sp || port == 0) 1104 sprintf(cp, "%.15s ", sp ? sp->s_name : "*"); 1105 else 1106 sprintf(cp, "%d ", ntohs((u_short)port)); 1107 width = (Aflag && !Wflag) ? 18 : 22; 1108 if (Wflag) 1109 printf("%-*s ", width, line); 1110 else 1111 printf("%-*.*s ", width, width, line); 1112 } 1113 1114 /* 1115 * Construct an Internet address representation. 1116 * If numeric_addr has been supplied, give 1117 * numeric value, otherwise try for symbolic name. 1118 */ 1119 char * 1120 inetname(struct in_addr *inp) 1121 { 1122 char *cp; 1123 static char line[MAXHOSTNAMELEN]; 1124 struct hostent *hp; 1125 struct netent *np; 1126 1127 cp = 0; 1128 if (!numeric_addr && inp->s_addr != INADDR_ANY) { 1129 int net = inet_netof(*inp); 1130 int lna = inet_lnaof(*inp); 1131 1132 if (lna == INADDR_ANY) { 1133 np = getnetbyaddr(net, AF_INET); 1134 if (np) 1135 cp = np->n_name; 1136 } 1137 if (cp == 0) { 1138 hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET); 1139 if (hp) { 1140 cp = hp->h_name; 1141 trimdomain(cp, strlen(cp)); 1142 } 1143 } 1144 } 1145 if (inp->s_addr == INADDR_ANY) 1146 strcpy(line, "*"); 1147 else if (cp) { 1148 strlcpy(line, cp, sizeof(line)); 1149 } else { 1150 inp->s_addr = ntohl(inp->s_addr); 1151 #define C(x) ((u_int)((x) & 0xff)) 1152 sprintf(line, "%u.%u.%u.%u", C(inp->s_addr >> 24), 1153 C(inp->s_addr >> 16), C(inp->s_addr >> 8), C(inp->s_addr)); 1154 } 1155 return (line); 1156 } 1157