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/socket.h> 47 #include <sys/socketvar.h> 48 #include <sys/sysctl.h> 49 #include <sys/protosw.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 ", 450 so->so_rcv.sb_cc, so->so_snd.sb_cc); 451 } 452 if (numeric_port) { 453 if (inp->inp_vflag & INP_IPV4) { 454 inetprint(&inp->inp_laddr, (int)inp->inp_lport, 455 name, 1); 456 if (!Lflag) 457 inetprint(&inp->inp_faddr, 458 (int)inp->inp_fport, name, 1); 459 } 460 #ifdef INET6 461 else if (inp->inp_vflag & INP_IPV6) { 462 inet6print(&inp->in6p_laddr, 463 (int)inp->inp_lport, name, 1); 464 if (!Lflag) 465 inet6print(&inp->in6p_faddr, 466 (int)inp->inp_fport, name, 1); 467 } /* else nothing printed now */ 468 #endif /* INET6 */ 469 } else if (inp->inp_flags & INP_ANONPORT) { 470 if (inp->inp_vflag & INP_IPV4) { 471 inetprint(&inp->inp_laddr, (int)inp->inp_lport, 472 name, 1); 473 if (!Lflag) 474 inetprint(&inp->inp_faddr, 475 (int)inp->inp_fport, name, 0); 476 } 477 #ifdef INET6 478 else if (inp->inp_vflag & INP_IPV6) { 479 inet6print(&inp->in6p_laddr, 480 (int)inp->inp_lport, name, 1); 481 if (!Lflag) 482 inet6print(&inp->in6p_faddr, 483 (int)inp->inp_fport, name, 0); 484 } /* else nothing printed now */ 485 #endif /* INET6 */ 486 } else { 487 if (inp->inp_vflag & INP_IPV4) { 488 inetprint(&inp->inp_laddr, (int)inp->inp_lport, 489 name, 0); 490 if (!Lflag) 491 inetprint(&inp->inp_faddr, 492 (int)inp->inp_fport, name, 493 inp->inp_lport != inp->inp_fport); 494 } 495 #ifdef INET6 496 else if (inp->inp_vflag & INP_IPV6) { 497 inet6print(&inp->in6p_laddr, 498 (int)inp->inp_lport, name, 0); 499 if (!Lflag) 500 inet6print(&inp->in6p_faddr, 501 (int)inp->inp_fport, name, 502 inp->inp_lport != inp->inp_fport); 503 } /* else nothing printed now */ 504 #endif /* INET6 */ 505 } 506 if (xflag) { 507 if (Lflag) 508 printf("%21s %6u %6u %6u %6u %6u %6u %6u %6u %6u %6u %6u %6u ", 509 " ", 510 so->so_rcv.sb_mcnt, so->so_snd.sb_mcnt, 511 so->so_rcv.sb_ccnt, so->so_snd.sb_ccnt, 512 so->so_rcv.sb_hiwat, so->so_snd.sb_hiwat, 513 so->so_rcv.sb_lowat, so->so_snd.sb_lowat, 514 so->so_rcv.sb_mbcnt, so->so_snd.sb_mbcnt, 515 so->so_rcv.sb_mbmax, so->so_snd.sb_mbmax); 516 else 517 printf("%6u %6u %6u %6u %6u %6u %6u %6u %6u %6u %6u %6u ", 518 so->so_rcv.sb_mcnt, so->so_snd.sb_mcnt, 519 so->so_rcv.sb_ccnt, so->so_snd.sb_ccnt, 520 so->so_rcv.sb_hiwat, so->so_snd.sb_hiwat, 521 so->so_rcv.sb_lowat, so->so_snd.sb_lowat, 522 so->so_rcv.sb_mbcnt, so->so_snd.sb_mbcnt, 523 so->so_rcv.sb_mbmax, so->so_snd.sb_mbmax); 524 } 525 if (istcp && !Lflag) { 526 if (tp->t_state < 0 || tp->t_state >= TCP_NSTATES) 527 printf("%d", tp->t_state); 528 else { 529 printf("%s", tcpstates[tp->t_state]); 530 #if defined(TF_NEEDSYN) && defined(TF_NEEDFIN) 531 /* Show T/TCP `hidden state' */ 532 if (tp->t_flags & (TF_NEEDSYN|TF_NEEDFIN)) 533 putchar('*'); 534 #endif /* defined(TF_NEEDSYN) && defined(TF_NEEDFIN) */ 535 } 536 } 537 putchar('\n'); 538 } 539 if (xig != oxig && xig->xig_gen != oxig->xig_gen) { 540 if (oxig->xig_count > xig->xig_count) { 541 printf("Some %s sockets may have been deleted.\n", 542 name); 543 } else if (oxig->xig_count < xig->xig_count) { 544 printf("Some %s sockets may have been created.\n", 545 name); 546 } else { 547 printf( 548 "Some %s sockets may have been created or deleted.\n", 549 name); 550 } 551 } 552 free(buf); 553 } 554 555 /* 556 * Dump TCP statistics structure. 557 */ 558 void 559 tcp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 560 { 561 struct tcpstat tcpstat, zerostat; 562 size_t len = sizeof tcpstat; 563 564 #ifdef INET6 565 if (tcp_done != 0) 566 return; 567 else 568 tcp_done = 1; 569 #endif 570 571 if (live) { 572 if (zflag) 573 memset(&zerostat, 0, len); 574 if (sysctlbyname("net.inet.tcp.stats", &tcpstat, &len, 575 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 576 warn("sysctl: net.inet.tcp.stats"); 577 return; 578 } 579 } else 580 kread(off, &tcpstat, len); 581 582 printf ("%s:\n", name); 583 584 #define p(f, m) if (tcpstat.f || sflag <= 1) \ 585 printf(m, tcpstat.f, plural(tcpstat.f)) 586 #define p1a(f, m) if (tcpstat.f || sflag <= 1) \ 587 printf(m, tcpstat.f) 588 #define p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ 589 printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2, plural(tcpstat.f2)) 590 #define p2a(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ 591 printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2) 592 #define p3(f, m) if (tcpstat.f || sflag <= 1) \ 593 printf(m, tcpstat.f, pluralies(tcpstat.f)) 594 595 p(tcps_sndtotal, "\t%lu packet%s sent\n"); 596 p2(tcps_sndpack,tcps_sndbyte, "\t\t%lu data packet%s (%lu byte%s)\n"); 597 p2(tcps_sndrexmitpack, tcps_sndrexmitbyte, 598 "\t\t%lu data packet%s (%lu byte%s) retransmitted\n"); 599 p(tcps_sndrexmitbad, 600 "\t\t%lu data packet%s unnecessarily retransmitted\n"); 601 p(tcps_mturesent, "\t\t%lu resend%s initiated by MTU discovery\n"); 602 p2a(tcps_sndacks, tcps_delack, 603 "\t\t%lu ack-only packet%s (%lu delayed)\n"); 604 p(tcps_sndurg, "\t\t%lu URG only packet%s\n"); 605 p(tcps_sndprobe, "\t\t%lu window probe packet%s\n"); 606 p(tcps_sndwinup, "\t\t%lu window update packet%s\n"); 607 p(tcps_sndctrl, "\t\t%lu control packet%s\n"); 608 p(tcps_rcvtotal, "\t%lu packet%s received\n"); 609 p2(tcps_rcvackpack, tcps_rcvackbyte, 610 "\t\t%lu ack%s (for %lu byte%s)\n"); 611 p(tcps_rcvdupack, "\t\t%lu duplicate ack%s\n"); 612 p(tcps_rcvacktoomuch, "\t\t%lu ack%s for unsent data\n"); 613 p2(tcps_rcvpack, tcps_rcvbyte, 614 "\t\t%lu packet%s (%lu byte%s) received in-sequence\n"); 615 p2(tcps_rcvduppack, tcps_rcvdupbyte, 616 "\t\t%lu completely duplicate packet%s (%lu byte%s)\n"); 617 p(tcps_pawsdrop, "\t\t%lu old duplicate packet%s\n"); 618 p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte, 619 "\t\t%lu packet%s with some dup. data (%lu byte%s duped)\n"); 620 p2(tcps_rcvoopack, tcps_rcvoobyte, 621 "\t\t%lu out-of-order packet%s (%lu byte%s)\n"); 622 p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin, 623 "\t\t%lu packet%s (%lu byte%s) of data after window\n"); 624 p(tcps_rcvwinprobe, "\t\t%lu window probe%s\n"); 625 p(tcps_rcvwinupd, "\t\t%lu window update packet%s\n"); 626 p(tcps_rcvafterclose, "\t\t%lu packet%s received after close\n"); 627 p(tcps_rcvbadsum, "\t\t%lu discarded for bad checksum%s\n"); 628 p(tcps_rcvbadoff, "\t\t%lu discarded for bad header offset field%s\n"); 629 p1a(tcps_rcvshort, "\t\t%lu discarded because packet too short\n"); 630 p1a(tcps_rcvmemdrop, "\t\t%lu discarded due to memory problems\n"); 631 p(tcps_connattempt, "\t%lu connection request%s\n"); 632 p(tcps_accepts, "\t%lu connection accept%s\n"); 633 p(tcps_badsyn, "\t%lu bad connection attempt%s\n"); 634 p(tcps_listendrop, "\t%lu listen queue overflow%s\n"); 635 p(tcps_badrst, "\t%lu ignored RSTs in the window%s\n"); 636 p(tcps_connects, "\t%lu connection%s established (including accepts)\n"); 637 p2(tcps_closed, tcps_drops, 638 "\t%lu connection%s closed (including %lu drop%s)\n"); 639 p(tcps_cachedrtt, "\t\t%lu connection%s updated cached RTT on close\n"); 640 p(tcps_cachedrttvar, 641 "\t\t%lu connection%s updated cached RTT variance on close\n"); 642 p(tcps_cachedssthresh, 643 "\t\t%lu connection%s updated cached ssthresh on close\n"); 644 p(tcps_conndrops, "\t%lu embryonic connection%s dropped\n"); 645 p2(tcps_rttupdated, tcps_segstimed, 646 "\t%lu segment%s updated rtt (of %lu attempt%s)\n"); 647 p(tcps_rexmttimeo, "\t%lu retransmit timeout%s\n"); 648 p(tcps_timeoutdrop, "\t\t%lu connection%s dropped by rexmit timeout\n"); 649 p(tcps_persisttimeo, "\t%lu persist timeout%s\n"); 650 p(tcps_persistdrop, "\t\t%lu connection%s dropped by persist timeout\n"); 651 p(tcps_finwait2_drops, 652 "\t%lu Connection%s (fin_wait_2) dropped because of timeout\n"); 653 p(tcps_keeptimeo, "\t%lu keepalive timeout%s\n"); 654 p(tcps_keepprobe, "\t\t%lu keepalive probe%s sent\n"); 655 p(tcps_keepdrops, "\t\t%lu connection%s dropped by keepalive\n"); 656 p(tcps_predack, "\t%lu correct ACK header prediction%s\n"); 657 p(tcps_preddat, "\t%lu correct data packet header prediction%s\n"); 658 659 p3(tcps_sc_added, "\t%lu syncache entr%s added\n"); 660 p1a(tcps_sc_retransmitted, "\t\t%lu retransmitted\n"); 661 p1a(tcps_sc_dupsyn, "\t\t%lu dupsyn\n"); 662 p1a(tcps_sc_dropped, "\t\t%lu dropped\n"); 663 p1a(tcps_sc_completed, "\t\t%lu completed\n"); 664 p1a(tcps_sc_bucketoverflow, "\t\t%lu bucket overflow\n"); 665 p1a(tcps_sc_cacheoverflow, "\t\t%lu cache overflow\n"); 666 p1a(tcps_sc_reset, "\t\t%lu reset\n"); 667 p1a(tcps_sc_stale, "\t\t%lu stale\n"); 668 p1a(tcps_sc_aborted, "\t\t%lu aborted\n"); 669 p1a(tcps_sc_badack, "\t\t%lu badack\n"); 670 p1a(tcps_sc_unreach, "\t\t%lu unreach\n"); 671 p(tcps_sc_zonefail, "\t\t%lu zone failure%s\n"); 672 p(tcps_sc_sendcookie, "\t%lu cookie%s sent\n"); 673 p(tcps_sc_recvcookie, "\t%lu cookie%s received\n"); 674 675 p(tcps_sack_recovery_episode, "\t%lu SACK recovery episode%s\n"); 676 p(tcps_sack_rexmits, 677 "\t%lu segment rexmit%s in SACK recovery episodes\n"); 678 p(tcps_sack_rexmit_bytes, 679 "\t%lu byte rexmit%s in SACK recovery episodes\n"); 680 p(tcps_sack_rcv_blocks, 681 "\t%lu SACK option%s (SACK blocks) received\n"); 682 p(tcps_sack_send_blocks, "\t%lu SACK option%s (SACK blocks) sent\n"); 683 p1a(tcps_sack_sboverflow, "\t%lu SACK scoreboard overflow\n"); 684 685 #undef p 686 #undef p1a 687 #undef p2 688 #undef p2a 689 #undef p3 690 } 691 692 /* 693 * Dump UDP statistics structure. 694 */ 695 void 696 udp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 697 { 698 struct udpstat udpstat, zerostat; 699 size_t len = sizeof udpstat; 700 u_long delivered; 701 702 #ifdef INET6 703 if (udp_done != 0) 704 return; 705 else 706 udp_done = 1; 707 #endif 708 709 if (live) { 710 if (zflag) 711 memset(&zerostat, 0, len); 712 if (sysctlbyname("net.inet.udp.stats", &udpstat, &len, 713 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 714 warn("sysctl: net.inet.udp.stats"); 715 return; 716 } 717 } else 718 kread(off, &udpstat, len); 719 720 printf("%s:\n", name); 721 #define p(f, m) if (udpstat.f || sflag <= 1) \ 722 printf(m, udpstat.f, plural(udpstat.f)) 723 #define p1a(f, m) if (udpstat.f || sflag <= 1) \ 724 printf(m, udpstat.f) 725 p(udps_ipackets, "\t%lu datagram%s received\n"); 726 p1a(udps_hdrops, "\t%lu with incomplete header\n"); 727 p1a(udps_badlen, "\t%lu with bad data length field\n"); 728 p1a(udps_badsum, "\t%lu with bad checksum\n"); 729 p1a(udps_nosum, "\t%lu with no checksum\n"); 730 p1a(udps_noport, "\t%lu dropped due to no socket\n"); 731 p(udps_noportbcast, 732 "\t%lu broadcast/multicast datagram%s undelivered\n"); 733 p1a(udps_fullsock, "\t%lu dropped due to full socket buffers\n"); 734 p1a(udpps_pcbhashmiss, "\t%lu not for hashed pcb\n"); 735 delivered = udpstat.udps_ipackets - 736 udpstat.udps_hdrops - 737 udpstat.udps_badlen - 738 udpstat.udps_badsum - 739 udpstat.udps_noport - 740 udpstat.udps_noportbcast - 741 udpstat.udps_fullsock; 742 if (delivered || sflag <= 1) 743 printf("\t%lu delivered\n", delivered); 744 p(udps_opackets, "\t%lu datagram%s output\n"); 745 /* the next statistic is cumulative in udps_noportbcast */ 746 p(udps_filtermcast, 747 "\t%lu time%s multicast source filter matched\n"); 748 #undef p 749 #undef p1a 750 } 751 752 /* 753 * Dump CARP statistics structure. 754 */ 755 void 756 carp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 757 { 758 struct carpstats carpstat, zerostat; 759 size_t len = sizeof(struct carpstats); 760 761 if (live) { 762 if (zflag) 763 memset(&zerostat, 0, len); 764 if (sysctlbyname("net.inet.carp.stats", &carpstat, &len, 765 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 766 if (errno != ENOENT) 767 warn("sysctl: net.inet.carp.stats"); 768 return; 769 } 770 } else { 771 if (off == 0) 772 return; 773 kread(off, &carpstat, len); 774 } 775 776 printf("%s:\n", name); 777 778 #define p(f, m) if (carpstat.f || sflag <= 1) \ 779 printf(m, (uintmax_t)carpstat.f, plural(carpstat.f)) 780 #define p2(f, m) if (carpstat.f || sflag <= 1) \ 781 printf(m, (uintmax_t)carpstat.f) 782 783 p(carps_ipackets, "\t%ju packet%s received (IPv4)\n"); 784 p(carps_ipackets6, "\t%ju packet%s received (IPv6)\n"); 785 p(carps_badttl, "\t\t%ju packet%s discarded for wrong TTL\n"); 786 p(carps_hdrops, "\t\t%ju packet%s shorter than header\n"); 787 p(carps_badsum, "\t\t%ju discarded for bad checksum%s\n"); 788 p(carps_badver, "\t\t%ju discarded packet%s with a bad version\n"); 789 p2(carps_badlen, "\t\t%ju discarded because packet too short\n"); 790 p2(carps_badauth, "\t\t%ju discarded for bad authentication\n"); 791 p2(carps_badvhid, "\t\t%ju discarded for bad vhid\n"); 792 p2(carps_badaddrs, "\t\t%ju discarded because of a bad address list\n"); 793 p(carps_opackets, "\t%ju packet%s sent (IPv4)\n"); 794 p(carps_opackets6, "\t%ju packet%s sent (IPv6)\n"); 795 p2(carps_onomem, "\t\t%ju send failed due to mbuf memory error\n"); 796 #if notyet 797 p(carps_ostates, "\t\t%s state update%s sent\n"); 798 #endif 799 #undef p 800 #undef p2 801 } 802 803 /* 804 * Dump IP statistics structure. 805 */ 806 void 807 ip_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 808 { 809 struct ipstat ipstat, zerostat; 810 size_t len = sizeof ipstat; 811 812 if (live) { 813 if (zflag) 814 memset(&zerostat, 0, len); 815 if (sysctlbyname("net.inet.ip.stats", &ipstat, &len, 816 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 817 warn("sysctl: net.inet.ip.stats"); 818 return; 819 } 820 } else 821 kread(off, &ipstat, len); 822 823 printf("%s:\n", name); 824 825 #define p(f, m) if (ipstat.f || sflag <= 1) \ 826 printf(m, ipstat.f, plural(ipstat.f)) 827 #define p1a(f, m) if (ipstat.f || sflag <= 1) \ 828 printf(m, ipstat.f) 829 830 p(ips_total, "\t%lu total packet%s received\n"); 831 p(ips_badsum, "\t%lu bad header checksum%s\n"); 832 p1a(ips_toosmall, "\t%lu with size smaller than minimum\n"); 833 p1a(ips_tooshort, "\t%lu with data size < data length\n"); 834 p1a(ips_toolong, "\t%lu with ip length > max ip packet size\n"); 835 p1a(ips_badhlen, "\t%lu with header length < data size\n"); 836 p1a(ips_badlen, "\t%lu with data length < header length\n"); 837 p1a(ips_badoptions, "\t%lu with bad options\n"); 838 p1a(ips_badvers, "\t%lu with incorrect version number\n"); 839 p(ips_fragments, "\t%lu fragment%s received\n"); 840 p(ips_fragdropped, "\t%lu fragment%s dropped (dup or out of space)\n"); 841 p(ips_fragtimeout, "\t%lu fragment%s dropped after timeout\n"); 842 p(ips_reassembled, "\t%lu packet%s reassembled ok\n"); 843 p(ips_delivered, "\t%lu packet%s for this host\n"); 844 p(ips_noproto, "\t%lu packet%s for unknown/unsupported protocol\n"); 845 p(ips_forward, "\t%lu packet%s forwarded"); 846 p(ips_fastforward, " (%lu packet%s fast forwarded)"); 847 if (ipstat.ips_forward || sflag <= 1) 848 putchar('\n'); 849 p(ips_cantforward, "\t%lu packet%s not forwardable\n"); 850 p(ips_notmember, 851 "\t%lu packet%s received for unknown multicast group\n"); 852 p(ips_redirectsent, "\t%lu redirect%s sent\n"); 853 p(ips_localout, "\t%lu packet%s sent from this host\n"); 854 p(ips_rawout, "\t%lu packet%s sent with fabricated ip header\n"); 855 p(ips_odropped, 856 "\t%lu output packet%s dropped due to no bufs, etc.\n"); 857 p(ips_noroute, "\t%lu output packet%s discarded due to no route\n"); 858 p(ips_fragmented, "\t%lu output datagram%s fragmented\n"); 859 p(ips_ofragments, "\t%lu fragment%s created\n"); 860 p(ips_cantfrag, "\t%lu datagram%s that can't be fragmented\n"); 861 p(ips_nogif, "\t%lu tunneling packet%s that can't find gif\n"); 862 p(ips_badaddr, "\t%lu datagram%s with bad address in header\n"); 863 #undef p 864 #undef p1a 865 } 866 867 static const char *icmpnames[ICMP_MAXTYPE + 1] = { 868 "echo reply", /* RFC 792 */ 869 "#1", 870 "#2", 871 "destination unreachable", /* RFC 792 */ 872 "source quench", /* RFC 792 */ 873 "routing redirect", /* RFC 792 */ 874 "#6", 875 "#7", 876 "echo", /* RFC 792 */ 877 "router advertisement", /* RFC 1256 */ 878 "router solicitation", /* RFC 1256 */ 879 "time exceeded", /* RFC 792 */ 880 "parameter problem", /* RFC 792 */ 881 "time stamp", /* RFC 792 */ 882 "time stamp reply", /* RFC 792 */ 883 "information request", /* RFC 792 */ 884 "information request reply", /* RFC 792 */ 885 "address mask request", /* RFC 950 */ 886 "address mask reply", /* RFC 950 */ 887 "#19", 888 "#20", 889 "#21", 890 "#22", 891 "#23", 892 "#24", 893 "#25", 894 "#26", 895 "#27", 896 "#28", 897 "#29", 898 "icmp traceroute", /* RFC 1393 */ 899 "datagram conversion error", /* RFC 1475 */ 900 "mobile host redirect", 901 "IPv6 where-are-you", 902 "IPv6 i-am-here", 903 "mobile registration req", 904 "mobile registration reply", 905 "domain name request", /* RFC 1788 */ 906 "domain name reply", /* RFC 1788 */ 907 "icmp SKIP", 908 "icmp photuris", /* RFC 2521 */ 909 }; 910 911 /* 912 * Dump ICMP statistics. 913 */ 914 void 915 icmp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 916 { 917 struct icmpstat icmpstat, zerostat; 918 int i, first; 919 size_t len; 920 921 len = sizeof icmpstat; 922 if (live) { 923 if (zflag) 924 memset(&zerostat, 0, len); 925 if (sysctlbyname("net.inet.icmp.stats", &icmpstat, &len, 926 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 927 warn("sysctl: net.inet.icmp.stats"); 928 return; 929 } 930 } else 931 kread(off, &icmpstat, len); 932 933 printf("%s:\n", name); 934 935 #define p(f, m) if (icmpstat.f || sflag <= 1) \ 936 printf(m, icmpstat.f, plural(icmpstat.f)) 937 #define p1a(f, m) if (icmpstat.f || sflag <= 1) \ 938 printf(m, icmpstat.f) 939 #define p2(f, m) if (icmpstat.f || sflag <= 1) \ 940 printf(m, icmpstat.f, plurales(icmpstat.f)) 941 942 p(icps_error, "\t%lu call%s to icmp_error\n"); 943 p(icps_oldicmp, 944 "\t%lu error%s not generated in response to an icmp message\n"); 945 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 946 if (icmpstat.icps_outhist[i] != 0) { 947 if (first) { 948 printf("\tOutput histogram:\n"); 949 first = 0; 950 } 951 if (icmpnames[i] != NULL) 952 printf("\t\t%s: %lu\n", icmpnames[i], 953 icmpstat.icps_outhist[i]); 954 else 955 printf("\t\tunknown ICMP #%d: %lu\n", i, 956 icmpstat.icps_outhist[i]); 957 } 958 p(icps_badcode, "\t%lu message%s with bad code fields\n"); 959 p(icps_tooshort, "\t%lu message%s less than the minimum length\n"); 960 p(icps_checksum, "\t%lu message%s with bad checksum\n"); 961 p(icps_badlen, "\t%lu message%s with bad length\n"); 962 p1a(icps_bmcastecho, "\t%lu multicast echo requests ignored\n"); 963 p1a(icps_bmcasttstamp, "\t%lu multicast timestamp requests ignored\n"); 964 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 965 if (icmpstat.icps_inhist[i] != 0) { 966 if (first) { 967 printf("\tInput histogram:\n"); 968 first = 0; 969 } 970 if (icmpnames[i] != NULL) 971 printf("\t\t%s: %lu\n", icmpnames[i], 972 icmpstat.icps_inhist[i]); 973 else 974 printf("\t\tunknown ICMP #%d: %lu\n", i, 975 icmpstat.icps_inhist[i]); 976 } 977 p(icps_reflect, "\t%lu message response%s generated\n"); 978 p2(icps_badaddr, "\t%lu invalid return address%s\n"); 979 p(icps_noroute, "\t%lu no return route%s\n"); 980 #undef p 981 #undef p1a 982 #undef p2 983 if (live) { 984 len = sizeof i; 985 if (sysctlbyname("net.inet.icmp.maskrepl", &i, &len, NULL, 0) < 986 0) 987 return; 988 printf("\tICMP address mask responses are %sabled\n", 989 i ? "en" : "dis"); 990 } 991 } 992 993 /* 994 * Dump IGMP statistics structure. 995 */ 996 void 997 igmp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 998 { 999 struct igmpstat igmpstat, zerostat; 1000 size_t len = sizeof igmpstat; 1001 1002 if (live) { 1003 if (zflag) 1004 memset(&zerostat, 0, len); 1005 if (sysctlbyname("net.inet.igmp.stats", &igmpstat, &len, 1006 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 1007 warn("sysctl: net.inet.igmp.stats"); 1008 return; 1009 } 1010 } else 1011 kread(off, &igmpstat, len); 1012 1013 printf("%s:\n", name); 1014 1015 #define p(f, m) if (igmpstat.f || sflag <= 1) \ 1016 printf(m, igmpstat.f, plural(igmpstat.f)) 1017 #define py(f, m) if (igmpstat.f || sflag <= 1) \ 1018 printf(m, igmpstat.f, igmpstat.f != 1 ? "ies" : "y") 1019 p(igps_rcv_total, "\t%u message%s received\n"); 1020 p(igps_rcv_tooshort, "\t%u message%s received with too few bytes\n"); 1021 p(igps_rcv_badsum, "\t%u message%s received with bad checksum\n"); 1022 py(igps_rcv_queries, "\t%u membership quer%s received\n"); 1023 py(igps_rcv_badqueries, 1024 "\t%u membership quer%s received with invalid field(s)\n"); 1025 p(igps_rcv_reports, "\t%u membership report%s received\n"); 1026 p(igps_rcv_badreports, 1027 "\t%u membership report%s received with invalid field(s)\n"); 1028 p(igps_rcv_ourreports, 1029 "\t%u membership report%s received for groups to which we belong\n"); 1030 p(igps_snd_reports, "\t%u membership report%s sent\n"); 1031 #undef p 1032 #undef py 1033 } 1034 1035 /* 1036 * Dump PIM statistics structure. 1037 */ 1038 void 1039 pim_stats(u_long off __unused, const char *name, int af1 __unused, 1040 int proto __unused) 1041 { 1042 struct pimstat pimstat, zerostat; 1043 size_t len = sizeof pimstat; 1044 1045 if (live) { 1046 if (zflag) 1047 memset(&zerostat, 0, len); 1048 if (sysctlbyname("net.inet.pim.stats", &pimstat, &len, 1049 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 1050 if (errno != ENOENT) 1051 warn("sysctl: net.inet.pim.stats"); 1052 return; 1053 } 1054 } else { 1055 if (off == 0) 1056 return; 1057 kread(off, &pimstat, len); 1058 } 1059 1060 printf("%s:\n", name); 1061 1062 #define p(f, m) if (pimstat.f || sflag <= 1) \ 1063 printf(m, (uintmax_t)pimstat.f, plural(pimstat.f)) 1064 #define py(f, m) if (pimstat.f || sflag <= 1) \ 1065 printf(m, (uintmax_t)pimstat.f, pimstat.f != 1 ? "ies" : "y") 1066 p(pims_rcv_total_msgs, "\t%ju message%s received\n"); 1067 p(pims_rcv_total_bytes, "\t%ju byte%s received\n"); 1068 p(pims_rcv_tooshort, "\t%ju message%s received with too few bytes\n"); 1069 p(pims_rcv_badsum, "\t%ju message%s received with bad checksum\n"); 1070 p(pims_rcv_badversion, "\t%ju message%s received with bad version\n"); 1071 p(pims_rcv_registers_msgs, "\t%ju data register message%s received\n"); 1072 p(pims_rcv_registers_bytes, "\t%ju data register byte%s received\n"); 1073 p(pims_rcv_registers_wrongiif, 1074 "\t%ju data register message%s received on wrong iif\n"); 1075 p(pims_rcv_badregisters, "\t%ju bad register%s received\n"); 1076 p(pims_snd_registers_msgs, "\t%ju data register message%s sent\n"); 1077 p(pims_snd_registers_bytes, "\t%ju data register byte%s sent\n"); 1078 #undef p 1079 #undef py 1080 } 1081 1082 /* 1083 * Pretty print an Internet address (net address + port). 1084 */ 1085 void 1086 inetprint(struct in_addr *in, int port, const char *proto, int num_port) 1087 { 1088 struct servent *sp = 0; 1089 char line[80], *cp; 1090 int width; 1091 1092 if (Wflag) 1093 sprintf(line, "%s.", inetname(in)); 1094 else 1095 sprintf(line, "%.*s.", (Aflag && !num_port) ? 12 : 16, inetname(in)); 1096 cp = index(line, '\0'); 1097 if (!num_port && port) 1098 sp = getservbyport((int)port, proto); 1099 if (sp || port == 0) 1100 sprintf(cp, "%.15s ", sp ? sp->s_name : "*"); 1101 else 1102 sprintf(cp, "%d ", ntohs((u_short)port)); 1103 width = (Aflag && !Wflag) ? 18 : 22; 1104 if (Wflag) 1105 printf("%-*s ", width, line); 1106 else 1107 printf("%-*.*s ", width, width, line); 1108 } 1109 1110 /* 1111 * Construct an Internet address representation. 1112 * If numeric_addr has been supplied, give 1113 * numeric value, otherwise try for symbolic name. 1114 */ 1115 char * 1116 inetname(struct in_addr *inp) 1117 { 1118 char *cp; 1119 static char line[MAXHOSTNAMELEN]; 1120 struct hostent *hp; 1121 struct netent *np; 1122 1123 cp = 0; 1124 if (!numeric_addr && inp->s_addr != INADDR_ANY) { 1125 int net = inet_netof(*inp); 1126 int lna = inet_lnaof(*inp); 1127 1128 if (lna == INADDR_ANY) { 1129 np = getnetbyaddr(net, AF_INET); 1130 if (np) 1131 cp = np->n_name; 1132 } 1133 if (cp == 0) { 1134 hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET); 1135 if (hp) { 1136 cp = hp->h_name; 1137 trimdomain(cp, strlen(cp)); 1138 } 1139 } 1140 } 1141 if (inp->s_addr == INADDR_ANY) 1142 strcpy(line, "*"); 1143 else if (cp) { 1144 strncpy(line, cp, sizeof(line) - 1); 1145 line[sizeof(line) - 1] = '\0'; 1146 } else { 1147 inp->s_addr = ntohl(inp->s_addr); 1148 #define C(x) ((u_int)((x) & 0xff)) 1149 sprintf(line, "%u.%u.%u.%u", C(inp->s_addr >> 24), 1150 C(inp->s_addr >> 16), C(inp->s_addr >> 8), C(inp->s_addr)); 1151 } 1152 return (line); 1153 } 1154