1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1983, 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #if 0 33 #ifndef lint 34 static char sccsid[] = "From: @(#)route.c 8.6 (Berkeley) 4/28/95"; 35 #endif /* not lint */ 36 #endif 37 38 #include <sys/cdefs.h> 39 #include <sys/param.h> 40 #include <sys/protosw.h> 41 #include <sys/socket.h> 42 #include <sys/socketvar.h> 43 #include <sys/sysctl.h> 44 #include <sys/time.h> 45 46 #include <net/ethernet.h> 47 #include <net/if.h> 48 #include <net/if_dl.h> 49 #include <net/if_types.h> 50 #include <net/route.h> 51 52 #include <netinet/in.h> 53 #include <netgraph/ng_socket.h> 54 55 #include <arpa/inet.h> 56 #include <ifaddrs.h> 57 #include <libutil.h> 58 #include <netdb.h> 59 #include <stdbool.h> 60 #include <stdint.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <stdbool.h> 64 #include <string.h> 65 #include <sysexits.h> 66 #include <unistd.h> 67 #include <err.h> 68 #include <libxo/xo.h> 69 #include "netstat.h" 70 #include "common.h" 71 #include "nl_defs.h" 72 73 /* 74 * Definitions for showing gateway flags. 75 */ 76 struct bits rt_bits[] = { 77 { RTF_UP, 'U', "up" }, 78 { RTF_GATEWAY, 'G', "gateway" }, 79 { RTF_HOST, 'H', "host" }, 80 { RTF_REJECT, 'R', "reject" }, 81 { RTF_DYNAMIC, 'D', "dynamic" }, 82 { RTF_MODIFIED, 'M', "modified" }, 83 { RTF_DONE, 'd', "done" }, /* Completed -- for routing msgs only */ 84 { RTF_XRESOLVE, 'X', "xresolve" }, 85 { RTF_STATIC, 'S', "static" }, 86 { RTF_PROTO1, '1', "proto1" }, 87 { RTF_PROTO2, '2', "proto2" }, 88 { RTF_PROTO3, '3', "proto3" }, 89 { RTF_BLACKHOLE,'B', "blackhole" }, 90 { RTF_BROADCAST,'b', "broadcast" }, 91 #ifdef RTF_LLINFO 92 { RTF_LLINFO, 'L', "llinfo" }, 93 #endif 94 { 0 , 0, NULL } 95 }; 96 97 #ifdef WITHOUT_NETLINK 98 static struct ifmap_entry *ifmap; 99 static size_t ifmap_size; 100 #endif 101 static struct timespec uptime; 102 103 static const char *netname4(in_addr_t, in_addr_t); 104 #ifdef INET6 105 static const char *netname6(struct sockaddr_in6 *, struct sockaddr_in6 *); 106 #endif 107 #ifdef WITHOUT_NETLINK 108 static void p_rtable_sysctl(int, int); 109 static void p_rtentry_sysctl(const char *name, struct rt_msghdr *); 110 #endif 111 static void domask(char *, size_t, u_long); 112 113 const uint32_t rt_default_weight = RT_DEFAULT_WEIGHT; 114 115 /* 116 * Print routing tables. 117 */ 118 void 119 routepr(int fibnum, int af) 120 { 121 size_t intsize; 122 int numfibs; 123 124 if (live == 0) 125 return; 126 127 intsize = sizeof(int); 128 if (fibnum == -1 && 129 sysctlbyname("net.my_fibnum", &fibnum, &intsize, NULL, 0) == -1) 130 fibnum = 0; 131 if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1) 132 numfibs = 1; 133 if (fibnum < 0 || fibnum > numfibs - 1) 134 errx(EX_USAGE, "%d: invalid fib", fibnum); 135 /* 136 * Since kernel & userland use different timebase 137 * (time_uptime vs time_second) and we are reading kernel memory 138 * directly we should do rt_expire --> expire_time conversion. 139 */ 140 if (clock_gettime(CLOCK_UPTIME, &uptime) < 0) 141 err(EX_OSERR, "clock_gettime() failed"); 142 143 xo_open_container("route-information"); 144 xo_emit("{T:Routing tables}"); 145 if (fibnum) 146 xo_emit(" ({L:fib}: {:fib/%d})", fibnum); 147 xo_emit("\n"); 148 #ifdef WITHOUT_NETLINK 149 p_rtable_sysctl(fibnum, af); 150 #else 151 p_rtable_netlink(fibnum, af); 152 #endif 153 xo_close_container("route-information"); 154 } 155 156 157 /* 158 * Print address family header before a section of the routing table. 159 */ 160 void 161 pr_family(int af1) 162 { 163 const char *afname; 164 165 switch (af1) { 166 case AF_INET: 167 afname = "Internet"; 168 break; 169 #ifdef INET6 170 case AF_INET6: 171 afname = "Internet6"; 172 break; 173 #endif /*INET6*/ 174 case AF_ISO: 175 afname = "ISO"; 176 break; 177 case AF_CCITT: 178 afname = "X.25"; 179 break; 180 case AF_NETGRAPH: 181 afname = "Netgraph"; 182 break; 183 default: 184 afname = NULL; 185 break; 186 } 187 if (afname) 188 xo_emit("\n{k:address-family/%s}:\n", afname); 189 else 190 xo_emit("\n{L:Protocol Family} {k:address-family/%d}:\n", af1); 191 } 192 193 /* column widths; each followed by one space */ 194 #ifndef INET6 195 #define WID_DST_DEFAULT(af) 18 /* width of destination column */ 196 #define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 197 #define WID_IF_DEFAULT(af) (Wflag ? 10 : 8) /* width of netif column */ 198 #else 199 #define WID_DST_DEFAULT(af) \ 200 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 201 #define WID_GW_DEFAULT(af) \ 202 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 203 #define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 10 : 8)) 204 #endif /*INET6*/ 205 206 struct _wid wid; 207 208 /* 209 * Print header for routing table columns. 210 */ 211 void 212 pr_rthdr(int af1 __unused) 213 { 214 215 if (Wflag) { 216 xo_emit("{T:/%-*.*s} {T:/%-*.*s} {T:/%-*.*s} {T:/%*.*s} " 217 "{T:/%*.*s} {T:/%*.*s} {T:/%*s}\n", 218 wid.dst, wid.dst, "Destination", 219 wid.gw, wid.gw, "Gateway", 220 wid.flags, wid.flags, "Flags", 221 wid.mtu, wid.mtu, "Nhop#", 222 wid.mtu, wid.mtu, "Mtu", 223 wid.iface, wid.iface, "Netif", 224 wid.expire, "Expire"); 225 } else { 226 xo_emit("{T:/%-*.*s} {T:/%-*.*s} {T:/%-*.*s} {T:/%*.*s} " 227 "{T:/%*s}\n", 228 wid.dst, wid.dst, "Destination", 229 wid.gw, wid.gw, "Gateway", 230 wid.flags, wid.flags, "Flags", 231 wid.iface, wid.iface, "Netif", 232 wid.expire, "Expire"); 233 } 234 } 235 236 void 237 set_wid(int fam) 238 { 239 wid.dst = WID_DST_DEFAULT(fam); 240 wid.gw = WID_GW_DEFAULT(fam); 241 wid.flags = 6; 242 wid.pksent = 8; 243 wid.mtu = 6; 244 wid.iface = WID_IF_DEFAULT(fam); 245 wid.expire = 6; 246 } 247 248 #ifdef WITHOUT_NETLINK 249 static void 250 p_rtable_sysctl(int fibnum, int af) 251 { 252 size_t needed; 253 int mib[7]; 254 char *buf, *next, *lim; 255 struct rt_msghdr *rtm; 256 struct sockaddr *sa; 257 int fam = AF_UNSPEC; 258 int need_table_close = false; 259 260 ifmap = prepare_ifmap(&ifmap_size); 261 262 mib[0] = CTL_NET; 263 mib[1] = PF_ROUTE; 264 mib[2] = 0; 265 mib[3] = af; 266 mib[4] = NET_RT_DUMP; 267 mib[5] = 0; 268 mib[6] = fibnum; 269 if (sysctl(mib, nitems(mib), NULL, &needed, NULL, 0) < 0) 270 err(EX_OSERR, "sysctl: net.route.0.%d.dump.%d estimate", af, 271 fibnum); 272 if ((buf = malloc(needed)) == NULL) 273 errx(2, "malloc(%lu)", (unsigned long)needed); 274 if (sysctl(mib, nitems(mib), buf, &needed, NULL, 0) < 0) 275 err(1, "sysctl: net.route.0.%d.dump.%d", af, fibnum); 276 lim = buf + needed; 277 xo_open_container("route-table"); 278 xo_open_list("rt-family"); 279 for (next = buf; next < lim; next += rtm->rtm_msglen) { 280 rtm = (struct rt_msghdr *)next; 281 if (rtm->rtm_version != RTM_VERSION) 282 continue; 283 /* 284 * Peek inside header to determine AF 285 */ 286 sa = (struct sockaddr *)(rtm + 1); 287 /* Only print family first time. */ 288 if (fam != sa->sa_family) { 289 if (need_table_close) { 290 xo_close_list("rt-entry"); 291 xo_close_instance("rt-family"); 292 } 293 need_table_close = true; 294 fam = sa->sa_family; 295 set_wid(fam); 296 xo_open_instance("rt-family"); 297 pr_family(fam); 298 xo_open_list("rt-entry"); 299 300 pr_rthdr(fam); 301 } 302 p_rtentry_sysctl("rt-entry", rtm); 303 } 304 if (need_table_close) { 305 xo_close_list("rt-entry"); 306 xo_close_instance("rt-family"); 307 } 308 xo_close_list("rt-family"); 309 xo_close_container("route-table"); 310 free(buf); 311 } 312 313 static void 314 p_rtentry_sysctl(const char *name, struct rt_msghdr *rtm) 315 { 316 struct sockaddr *sa, *addr[RTAX_MAX]; 317 char buffer[128]; 318 char prettyname[128]; 319 int i, protrusion; 320 321 xo_open_instance(name); 322 sa = (struct sockaddr *)(rtm + 1); 323 for (i = 0; i < RTAX_MAX; i++) { 324 if (rtm->rtm_addrs & (1 << i)) { 325 addr[i] = sa; 326 sa = (struct sockaddr *)((char *)sa + SA_SIZE(sa)); 327 } 328 } 329 330 protrusion = p_sockaddr("destination", addr[RTAX_DST], 331 addr[RTAX_NETMASK], 332 rtm->rtm_flags, wid.dst); 333 protrusion = p_sockaddr("gateway", addr[RTAX_GATEWAY], NULL, RTF_HOST, 334 wid.gw - protrusion); 335 snprintf(buffer, sizeof(buffer), "{[:-%d}{:flags/%%s}{]:} ", 336 wid.flags - protrusion); 337 p_flags(rtm->rtm_flags, buffer); 338 /* Output path weight as non-visual property */ 339 xo_emit("{e:weight/%u}", rtm->rtm_rmx.rmx_weight); 340 if (Wflag) { 341 /* XXX: use=0? */ 342 xo_emit("{t:nhop/%*lu} ", wid.mtu, rtm->rtm_rmx.rmx_nhidx); 343 344 if (rtm->rtm_rmx.rmx_mtu != 0) 345 xo_emit("{t:mtu/%*lu} ", wid.mtu, rtm->rtm_rmx.rmx_mtu); 346 else 347 xo_emit("{P:/%*s} ", wid.mtu, ""); 348 } 349 350 memset(prettyname, 0, sizeof(prettyname)); 351 if (rtm->rtm_index < ifmap_size) { 352 strlcpy(prettyname, ifmap[rtm->rtm_index].ifname, 353 sizeof(prettyname)); 354 if (*prettyname == '\0') 355 strlcpy(prettyname, "---", sizeof(prettyname)); 356 } 357 358 if (Wflag) 359 xo_emit("{t:interface-name/%*s}", wid.iface, prettyname); 360 else 361 xo_emit("{t:interface-name/%*.*s}", wid.iface, wid.iface, 362 prettyname); 363 if (rtm->rtm_rmx.rmx_expire) { 364 time_t expire_time; 365 366 if ((expire_time = rtm->rtm_rmx.rmx_expire - uptime.tv_sec) > 0) 367 xo_emit(" {:expire-time/%*d}", wid.expire, 368 (int)expire_time); 369 } 370 371 xo_emit("\n"); 372 xo_close_instance(name); 373 } 374 #endif 375 376 int 377 p_sockaddr(const char *name, struct sockaddr *sa, struct sockaddr *mask, 378 int flags, int width) 379 { 380 const char *cp; 381 char buf[128]; 382 int protrusion; 383 384 cp = fmt_sockaddr(sa, mask, flags); 385 386 if (width < 0) { 387 snprintf(buf, sizeof(buf), "{:%s/%%s} ", name); 388 xo_emit(buf, cp); 389 protrusion = 0; 390 } else { 391 if (Wflag != 0 || numeric_addr) { 392 snprintf(buf, sizeof(buf), "{[:%d}{:%s/%%s}{]:} ", 393 -width, name); 394 xo_emit(buf, cp); 395 protrusion = strlen(cp) - width; 396 if (protrusion < 0) 397 protrusion = 0; 398 } else { 399 snprintf(buf, sizeof(buf), "{[:%d}{:%s/%%-.*s}{]:} ", 400 -width, name); 401 xo_emit(buf, width, cp); 402 protrusion = 0; 403 } 404 } 405 return (protrusion); 406 } 407 408 const char * 409 fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 410 { 411 static char buf[128]; 412 const char *cp; 413 414 if (sa == NULL) 415 return ("null"); 416 417 switch(sa->sa_family) { 418 #ifdef INET6 419 case AF_INET6: 420 /* 421 * The sa6->sin6_scope_id must be filled here because 422 * this sockaddr is extracted from kmem(4) directly 423 * and has KAME-specific embedded scope id in 424 * sa6->sin6_addr.s6_addr[2]. 425 */ 426 in6_fillscopeid(satosin6(sa)); 427 /* FALLTHROUGH */ 428 #endif /*INET6*/ 429 case AF_INET: 430 if (flags & RTF_HOST) 431 cp = routename(sa, numeric_addr); 432 else if (mask) 433 cp = netname(sa, mask); 434 else 435 cp = netname(sa, NULL); 436 break; 437 case AF_NETGRAPH: 438 { 439 strlcpy(buf, ((struct sockaddr_ng *)sa)->sg_data, 440 sizeof(buf)); 441 cp = buf; 442 break; 443 } 444 case AF_LINK: 445 { 446 #if 0 447 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 448 449 /* Interface route. */ 450 if (sdl->sdl_nlen) 451 cp = sdl->sdl_data; 452 else 453 #endif 454 cp = routename(sa, 1); 455 break; 456 } 457 default: 458 { 459 u_char *s = (u_char *)sa->sa_data, *slim; 460 char *cq, *cqlim; 461 462 cq = buf; 463 slim = sa->sa_len + (u_char *) sa; 464 cqlim = cq + sizeof(buf) - sizeof(" ffff"); 465 snprintf(cq, sizeof(buf), "(%d)", sa->sa_family); 466 cq += strlen(cq); 467 while (s < slim && cq < cqlim) { 468 snprintf(cq, sizeof(" ff"), " %02x", *s++); 469 cq += strlen(cq); 470 if (s < slim) { 471 snprintf(cq, sizeof("ff"), "%02x", *s++); 472 cq += strlen(cq); 473 } 474 } 475 cp = buf; 476 } 477 } 478 479 return (cp); 480 } 481 482 void 483 p_flags(int f, const char *format) 484 { 485 486 print_flags_generic(f, rt_bits, format, "flags_pretty"); 487 } 488 489 490 char * 491 routename(struct sockaddr *sa, int flags) 492 { 493 static char line[NI_MAXHOST]; 494 int error, f; 495 496 f = (flags) ? NI_NUMERICHOST : 0; 497 error = getnameinfo(sa, sa->sa_len, line, sizeof(line), 498 NULL, 0, f); 499 if (error) { 500 const void *src; 501 switch (sa->sa_family) { 502 #ifdef INET 503 case AF_INET: 504 src = &satosin(sa)->sin_addr; 505 break; 506 #endif /* INET */ 507 #ifdef INET6 508 case AF_INET6: 509 src = &satosin6(sa)->sin6_addr; 510 break; 511 #endif /* INET6 */ 512 default: 513 return(line); 514 } 515 inet_ntop(sa->sa_family, src, line, sizeof(line) - 1); 516 return (line); 517 } 518 trimdomain(line, strlen(line)); 519 520 return (line); 521 } 522 523 #define NSHIFT(m) ( \ 524 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 525 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 526 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 527 0) 528 529 static void 530 domask(char *dst, size_t buflen, u_long mask) 531 { 532 int b, i; 533 534 if (mask == 0) { 535 *dst = '\0'; 536 return; 537 } 538 i = 0; 539 for (b = 0; b < 32; b++) 540 if (mask & (1 << b)) { 541 int bb; 542 543 i = b; 544 for (bb = b+1; bb < 32; bb++) 545 if (!(mask & (1 << bb))) { 546 i = -1; /* noncontig */ 547 break; 548 } 549 break; 550 } 551 if (i == -1) 552 snprintf(dst, buflen, "&0x%lx", mask); 553 else 554 snprintf(dst, buflen, "/%d", 32-i); 555 } 556 557 /* 558 * Return the name of the network whose address is given. 559 */ 560 const char * 561 netname(struct sockaddr *sa, struct sockaddr *mask) 562 { 563 switch (sa->sa_family) { 564 case AF_INET: 565 if (mask != NULL) 566 return (netname4(satosin(sa)->sin_addr.s_addr, 567 satosin(mask)->sin_addr.s_addr)); 568 else 569 return (netname4(satosin(sa)->sin_addr.s_addr, 570 INADDR_ANY)); 571 break; 572 #ifdef INET6 573 case AF_INET6: 574 return (netname6(satosin6(sa), satosin6(mask))); 575 #endif /* INET6 */ 576 default: 577 return (NULL); 578 } 579 } 580 581 static const char * 582 netname4(in_addr_t in, in_addr_t mask) 583 { 584 char *cp = 0; 585 static char line[MAXHOSTNAMELEN + sizeof("&0xffffffff")]; 586 char nline[INET_ADDRSTRLEN]; 587 struct netent *np = 0; 588 in_addr_t i; 589 590 if (in == INADDR_ANY && mask == 0) { 591 strlcpy(line, "default", sizeof(line)); 592 return (line); 593 } 594 595 /* It is ok to supply host address. */ 596 in &= mask; 597 598 i = ntohl(in); 599 if (!numeric_addr && i) { 600 np = getnetbyaddr(i >> NSHIFT(ntohl(mask)), AF_INET); 601 if (np != NULL) { 602 cp = np->n_name; 603 trimdomain(cp, strlen(cp)); 604 } 605 } 606 if (cp != NULL) 607 strlcpy(line, cp, sizeof(line)); 608 else { 609 inet_ntop(AF_INET, &in, nline, sizeof(nline)); 610 strlcpy(line, nline, sizeof(line)); 611 domask(line + strlen(line), sizeof(line) - strlen(line), ntohl(mask)); 612 } 613 614 return (line); 615 } 616 617 #undef NSHIFT 618 619 #ifdef INET6 620 void 621 in6_fillscopeid(struct sockaddr_in6 *sa6) 622 { 623 #if defined(__KAME__) 624 /* 625 * XXX: This is a special workaround for KAME kernels. 626 * sin6_scope_id field of SA should be set in the future. 627 */ 628 if (IN6_IS_ADDR_LINKLOCAL(&sa6->sin6_addr) || 629 IN6_IS_ADDR_MC_NODELOCAL(&sa6->sin6_addr) || 630 IN6_IS_ADDR_MC_LINKLOCAL(&sa6->sin6_addr)) { 631 if (sa6->sin6_scope_id == 0) 632 sa6->sin6_scope_id = 633 ntohs(*(u_int16_t *)&sa6->sin6_addr.s6_addr[2]); 634 sa6->sin6_addr.s6_addr[2] = sa6->sin6_addr.s6_addr[3] = 0; 635 } 636 #endif 637 } 638 639 /* Mask to length table. To check an invalid value, (length + 1) is used. */ 640 static const u_char masktolen[256] = { 641 [0xff] = 8 + 1, 642 [0xfe] = 7 + 1, 643 [0xfc] = 6 + 1, 644 [0xf8] = 5 + 1, 645 [0xf0] = 4 + 1, 646 [0xe0] = 3 + 1, 647 [0xc0] = 2 + 1, 648 [0x80] = 1 + 1, 649 [0x00] = 0 + 1, 650 }; 651 652 static const char * 653 netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask) 654 { 655 static char line[NI_MAXHOST + sizeof("/xxx") - 1]; 656 struct sockaddr_in6 addr; 657 char nline[NI_MAXHOST]; 658 char maskbuf[sizeof("/xxx")]; 659 u_char *p, *lim; 660 u_char masklen; 661 int i; 662 bool illegal = false; 663 664 if (mask) { 665 p = (u_char *)&mask->sin6_addr; 666 for (masklen = 0, lim = p + 16; p < lim; p++) { 667 if (masktolen[*p] > 0) { 668 /* -1 is required. */ 669 masklen += (masktolen[*p] - 1); 670 } else 671 illegal = true; 672 } 673 if (illegal) 674 xo_error("illegal prefixlen\n"); 675 676 memcpy(&addr, sa6, sizeof(addr)); 677 for (i = 0; i < 16; ++i) 678 addr.sin6_addr.s6_addr[i] &= 679 mask->sin6_addr.s6_addr[i]; 680 sa6 = &addr; 681 } 682 else 683 masklen = 128; 684 685 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 686 return("default"); 687 688 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, nline, sizeof(nline), 689 NULL, 0, NI_NUMERICHOST); 690 if (numeric_addr) 691 strlcpy(line, nline, sizeof(line)); 692 else 693 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, 694 sizeof(line), NULL, 0, 0); 695 if (numeric_addr || strcmp(line, nline) == 0) { 696 snprintf(maskbuf, sizeof(maskbuf), "/%d", masklen); 697 strlcat(line, maskbuf, sizeof(line)); 698 } 699 700 return (line); 701 } 702 #endif /*INET6*/ 703 704 /* 705 * Print routing statistics 706 */ 707 void 708 rt_stats(void) 709 { 710 struct rtstat rtstat; 711 u_long rtsaddr; 712 713 if ((rtsaddr = nl[N_RTSTAT].n_value) == 0) { 714 xo_emit("{W:rtstat: symbol not in namelist}\n"); 715 return; 716 } 717 kread_counters(rtsaddr, (char *)&rtstat, sizeof (rtstat)); 718 xo_emit("{T:routing}:\n"); 719 720 #define p(f, m) if (rtstat.f || sflag <= 1) \ 721 xo_emit(m, rtstat.f, plural(rtstat.f)) 722 723 p(rts_badredirect, "\t{:bad-redirects/%ju} " 724 "{N:/bad routing redirect%s}\n"); 725 p(rts_dynamic, "\t{:dynamically-created/%ju} " 726 "{N:/dynamically created route%s}\n"); 727 p(rts_newgateway, "\t{:new-gateways/%ju} " 728 "{N:/new gateway%s due to redirects}\n"); 729 p(rts_unreach, "\t{:unreachable-destination/%ju} " 730 "{N:/destination%s found unreachable}\n"); 731 p(rts_wildcard, "\t{:wildcard-uses/%ju} " 732 "{N:/use%s of a wildcard route}\n"); 733 #undef p 734 } 735