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 __FBSDID("$FreeBSD$"); 40 41 #include <sys/param.h> 42 #include <sys/protosw.h> 43 #include <sys/socket.h> 44 #include <sys/socketvar.h> 45 #include <sys/sysctl.h> 46 #include <sys/time.h> 47 48 #include <net/ethernet.h> 49 #include <net/if.h> 50 #include <net/if_dl.h> 51 #include <net/if_types.h> 52 #include <net/route.h> 53 54 #include <netinet/in.h> 55 #include <netgraph/ng_socket.h> 56 57 #include <arpa/inet.h> 58 #include <ifaddrs.h> 59 #include <libutil.h> 60 #include <netdb.h> 61 #include <stdbool.h> 62 #include <stdint.h> 63 #include <stdio.h> 64 #include <stdlib.h> 65 #include <stdbool.h> 66 #include <string.h> 67 #include <sysexits.h> 68 #include <unistd.h> 69 #include <err.h> 70 #include <libxo/xo.h> 71 #include "netstat.h" 72 #include "common.h" 73 #include "nl_defs.h" 74 75 /* 76 * Definitions for showing gateway flags. 77 */ 78 struct bits rt_bits[] = { 79 { RTF_UP, 'U', "up" }, 80 { RTF_GATEWAY, 'G', "gateway" }, 81 { RTF_HOST, 'H', "host" }, 82 { RTF_REJECT, 'R', "reject" }, 83 { RTF_DYNAMIC, 'D', "dynamic" }, 84 { RTF_MODIFIED, 'M', "modified" }, 85 { RTF_DONE, 'd', "done" }, /* Completed -- for routing msgs only */ 86 { RTF_XRESOLVE, 'X', "xresolve" }, 87 { RTF_STATIC, 'S', "static" }, 88 { RTF_PROTO1, '1', "proto1" }, 89 { RTF_PROTO2, '2', "proto2" }, 90 { RTF_PROTO3, '3', "proto3" }, 91 { RTF_BLACKHOLE,'B', "blackhole" }, 92 { RTF_BROADCAST,'b', "broadcast" }, 93 #ifdef RTF_LLINFO 94 { RTF_LLINFO, 'L', "llinfo" }, 95 #endif 96 { 0 , 0, NULL } 97 }; 98 99 #ifdef WITHOUT_NETLINK 100 static struct ifmap_entry *ifmap; 101 static size_t ifmap_size; 102 #endif 103 static struct timespec uptime; 104 105 static const char *netname4(in_addr_t, in_addr_t); 106 #ifdef INET6 107 static const char *netname6(struct sockaddr_in6 *, struct sockaddr_in6 *); 108 #endif 109 #ifdef WITHOUT_NETLINK 110 static void p_rtable_sysctl(int, int); 111 static void p_rtentry_sysctl(const char *name, struct rt_msghdr *); 112 #endif 113 static void domask(char *, size_t, u_long); 114 115 const uint32_t rt_default_weight = RT_DEFAULT_WEIGHT; 116 117 /* 118 * Print routing tables. 119 */ 120 void 121 routepr(int fibnum, int af) 122 { 123 size_t intsize; 124 int numfibs; 125 126 if (live == 0) 127 return; 128 129 intsize = sizeof(int); 130 if (fibnum == -1 && 131 sysctlbyname("net.my_fibnum", &fibnum, &intsize, NULL, 0) == -1) 132 fibnum = 0; 133 if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1) 134 numfibs = 1; 135 if (fibnum < 0 || fibnum > numfibs - 1) 136 errx(EX_USAGE, "%d: invalid fib", fibnum); 137 /* 138 * Since kernel & userland use different timebase 139 * (time_uptime vs time_second) and we are reading kernel memory 140 * directly we should do rt_expire --> expire_time conversion. 141 */ 142 if (clock_gettime(CLOCK_UPTIME, &uptime) < 0) 143 err(EX_OSERR, "clock_gettime() failed"); 144 145 xo_open_container("route-information"); 146 xo_emit("{T:Routing tables}"); 147 if (fibnum) 148 xo_emit(" ({L:fib}: {:fib/%d})", fibnum); 149 xo_emit("\n"); 150 #ifdef WITHOUT_NETLINK 151 p_rtable_sysctl(fibnum, af); 152 #else 153 p_rtable_netlink(fibnum, af); 154 #endif 155 xo_close_container("route-information"); 156 } 157 158 159 /* 160 * Print address family header before a section of the routing table. 161 */ 162 void 163 pr_family(int af1) 164 { 165 const char *afname; 166 167 switch (af1) { 168 case AF_INET: 169 afname = "Internet"; 170 break; 171 #ifdef INET6 172 case AF_INET6: 173 afname = "Internet6"; 174 break; 175 #endif /*INET6*/ 176 case AF_ISO: 177 afname = "ISO"; 178 break; 179 case AF_CCITT: 180 afname = "X.25"; 181 break; 182 case AF_NETGRAPH: 183 afname = "Netgraph"; 184 break; 185 default: 186 afname = NULL; 187 break; 188 } 189 if (afname) 190 xo_emit("\n{k:address-family/%s}:\n", afname); 191 else 192 xo_emit("\n{L:Protocol Family} {k:address-family/%d}:\n", af1); 193 } 194 195 /* column widths; each followed by one space */ 196 #ifndef INET6 197 #define WID_DST_DEFAULT(af) 18 /* width of destination column */ 198 #define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 199 #define WID_IF_DEFAULT(af) (Wflag ? 10 : 8) /* width of netif column */ 200 #else 201 #define WID_DST_DEFAULT(af) \ 202 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 203 #define WID_GW_DEFAULT(af) \ 204 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 205 #define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 10 : 8)) 206 #endif /*INET6*/ 207 208 struct _wid wid; 209 210 /* 211 * Print header for routing table columns. 212 */ 213 void 214 pr_rthdr(int af1 __unused) 215 { 216 217 if (Wflag) { 218 xo_emit("{T:/%-*.*s} {T:/%-*.*s} {T:/%-*.*s} {T:/%*.*s} " 219 "{T:/%*.*s} {T:/%*.*s} {T:/%*s}\n", 220 wid.dst, wid.dst, "Destination", 221 wid.gw, wid.gw, "Gateway", 222 wid.flags, wid.flags, "Flags", 223 wid.mtu, wid.mtu, "Nhop#", 224 wid.mtu, wid.mtu, "Mtu", 225 wid.iface, wid.iface, "Netif", 226 wid.expire, "Expire"); 227 } else { 228 xo_emit("{T:/%-*.*s} {T:/%-*.*s} {T:/%-*.*s} {T:/%*.*s} " 229 "{T:/%*s}\n", 230 wid.dst, wid.dst, "Destination", 231 wid.gw, wid.gw, "Gateway", 232 wid.flags, wid.flags, "Flags", 233 wid.iface, wid.iface, "Netif", 234 wid.expire, "Expire"); 235 } 236 } 237 238 void 239 set_wid(int fam) 240 { 241 wid.dst = WID_DST_DEFAULT(fam); 242 wid.gw = WID_GW_DEFAULT(fam); 243 wid.flags = 6; 244 wid.pksent = 8; 245 wid.mtu = 6; 246 wid.iface = WID_IF_DEFAULT(fam); 247 wid.expire = 6; 248 } 249 250 #ifdef WITHOUT_NETLINK 251 static void 252 p_rtable_sysctl(int fibnum, int af) 253 { 254 size_t needed; 255 int mib[7]; 256 char *buf, *next, *lim; 257 struct rt_msghdr *rtm; 258 struct sockaddr *sa; 259 int fam = AF_UNSPEC; 260 int need_table_close = false; 261 262 ifmap = prepare_ifmap(&ifmap_size); 263 264 mib[0] = CTL_NET; 265 mib[1] = PF_ROUTE; 266 mib[2] = 0; 267 mib[3] = af; 268 mib[4] = NET_RT_DUMP; 269 mib[5] = 0; 270 mib[6] = fibnum; 271 if (sysctl(mib, nitems(mib), NULL, &needed, NULL, 0) < 0) 272 err(EX_OSERR, "sysctl: net.route.0.%d.dump.%d estimate", af, 273 fibnum); 274 if ((buf = malloc(needed)) == NULL) 275 errx(2, "malloc(%lu)", (unsigned long)needed); 276 if (sysctl(mib, nitems(mib), buf, &needed, NULL, 0) < 0) 277 err(1, "sysctl: net.route.0.%d.dump.%d", af, fibnum); 278 lim = buf + needed; 279 xo_open_container("route-table"); 280 xo_open_list("rt-family"); 281 for (next = buf; next < lim; next += rtm->rtm_msglen) { 282 rtm = (struct rt_msghdr *)next; 283 if (rtm->rtm_version != RTM_VERSION) 284 continue; 285 /* 286 * Peek inside header to determine AF 287 */ 288 sa = (struct sockaddr *)(rtm + 1); 289 /* Only print family first time. */ 290 if (fam != sa->sa_family) { 291 if (need_table_close) { 292 xo_close_list("rt-entry"); 293 xo_close_instance("rt-family"); 294 } 295 need_table_close = true; 296 fam = sa->sa_family; 297 set_wid(fam); 298 xo_open_instance("rt-family"); 299 pr_family(fam); 300 xo_open_list("rt-entry"); 301 302 pr_rthdr(fam); 303 } 304 p_rtentry_sysctl("rt-entry", rtm); 305 } 306 if (need_table_close) { 307 xo_close_list("rt-entry"); 308 xo_close_instance("rt-family"); 309 } 310 xo_close_list("rt-family"); 311 xo_close_container("route-table"); 312 free(buf); 313 } 314 315 static void 316 p_rtentry_sysctl(const char *name, struct rt_msghdr *rtm) 317 { 318 struct sockaddr *sa, *addr[RTAX_MAX]; 319 char buffer[128]; 320 char prettyname[128]; 321 int i, protrusion; 322 323 xo_open_instance(name); 324 sa = (struct sockaddr *)(rtm + 1); 325 for (i = 0; i < RTAX_MAX; i++) { 326 if (rtm->rtm_addrs & (1 << i)) { 327 addr[i] = sa; 328 sa = (struct sockaddr *)((char *)sa + SA_SIZE(sa)); 329 } 330 } 331 332 protrusion = p_sockaddr("destination", addr[RTAX_DST], 333 addr[RTAX_NETMASK], 334 rtm->rtm_flags, wid.dst); 335 protrusion = p_sockaddr("gateway", addr[RTAX_GATEWAY], NULL, RTF_HOST, 336 wid.gw - protrusion); 337 snprintf(buffer, sizeof(buffer), "{[:-%d}{:flags/%%s}{]:} ", 338 wid.flags - protrusion); 339 p_flags(rtm->rtm_flags, buffer); 340 /* Output path weight as non-visual property */ 341 xo_emit("{e:weight/%u}", rtm->rtm_rmx.rmx_weight); 342 if (Wflag) { 343 /* XXX: use=0? */ 344 xo_emit("{t:nhop/%*lu} ", wid.mtu, rtm->rtm_rmx.rmx_nhidx); 345 346 if (rtm->rtm_rmx.rmx_mtu != 0) 347 xo_emit("{t:mtu/%*lu} ", wid.mtu, rtm->rtm_rmx.rmx_mtu); 348 else 349 xo_emit("{P:/%*s} ", wid.mtu, ""); 350 } 351 352 memset(prettyname, 0, sizeof(prettyname)); 353 if (rtm->rtm_index < ifmap_size) { 354 strlcpy(prettyname, ifmap[rtm->rtm_index].ifname, 355 sizeof(prettyname)); 356 if (*prettyname == '\0') 357 strlcpy(prettyname, "---", sizeof(prettyname)); 358 } 359 360 if (Wflag) 361 xo_emit("{t:interface-name/%*s}", wid.iface, prettyname); 362 else 363 xo_emit("{t:interface-name/%*.*s}", wid.iface, wid.iface, 364 prettyname); 365 if (rtm->rtm_rmx.rmx_expire) { 366 time_t expire_time; 367 368 if ((expire_time = rtm->rtm_rmx.rmx_expire - uptime.tv_sec) > 0) 369 xo_emit(" {:expire-time/%*d}", wid.expire, 370 (int)expire_time); 371 } 372 373 xo_emit("\n"); 374 xo_close_instance(name); 375 } 376 #endif 377 378 int 379 p_sockaddr(const char *name, struct sockaddr *sa, struct sockaddr *mask, 380 int flags, int width) 381 { 382 const char *cp; 383 char buf[128]; 384 int protrusion; 385 386 cp = fmt_sockaddr(sa, mask, flags); 387 388 if (width < 0) { 389 snprintf(buf, sizeof(buf), "{:%s/%%s} ", name); 390 xo_emit(buf, cp); 391 protrusion = 0; 392 } else { 393 if (Wflag != 0 || numeric_addr) { 394 snprintf(buf, sizeof(buf), "{[:%d}{:%s/%%s}{]:} ", 395 -width, name); 396 xo_emit(buf, cp); 397 protrusion = strlen(cp) - width; 398 if (protrusion < 0) 399 protrusion = 0; 400 } else { 401 snprintf(buf, sizeof(buf), "{[:%d}{:%s/%%-.*s}{]:} ", 402 -width, name); 403 xo_emit(buf, width, cp); 404 protrusion = 0; 405 } 406 } 407 return (protrusion); 408 } 409 410 const char * 411 fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 412 { 413 static char buf[128]; 414 const char *cp; 415 416 if (sa == NULL) 417 return ("null"); 418 419 switch(sa->sa_family) { 420 #ifdef INET6 421 case AF_INET6: 422 /* 423 * The sa6->sin6_scope_id must be filled here because 424 * this sockaddr is extracted from kmem(4) directly 425 * and has KAME-specific embedded scope id in 426 * sa6->sin6_addr.s6_addr[2]. 427 */ 428 in6_fillscopeid(satosin6(sa)); 429 /* FALLTHROUGH */ 430 #endif /*INET6*/ 431 case AF_INET: 432 if (flags & RTF_HOST) 433 cp = routename(sa, numeric_addr); 434 else if (mask) 435 cp = netname(sa, mask); 436 else 437 cp = netname(sa, NULL); 438 break; 439 case AF_NETGRAPH: 440 { 441 strlcpy(buf, ((struct sockaddr_ng *)sa)->sg_data, 442 sizeof(buf)); 443 cp = buf; 444 break; 445 } 446 case AF_LINK: 447 { 448 #if 0 449 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 450 451 /* Interface route. */ 452 if (sdl->sdl_nlen) 453 cp = sdl->sdl_data; 454 else 455 #endif 456 cp = routename(sa, 1); 457 break; 458 } 459 default: 460 { 461 u_char *s = (u_char *)sa->sa_data, *slim; 462 char *cq, *cqlim; 463 464 cq = buf; 465 slim = sa->sa_len + (u_char *) sa; 466 cqlim = cq + sizeof(buf) - sizeof(" ffff"); 467 snprintf(cq, sizeof(buf), "(%d)", sa->sa_family); 468 cq += strlen(cq); 469 while (s < slim && cq < cqlim) { 470 snprintf(cq, sizeof(" ff"), " %02x", *s++); 471 cq += strlen(cq); 472 if (s < slim) { 473 snprintf(cq, sizeof("ff"), "%02x", *s++); 474 cq += strlen(cq); 475 } 476 } 477 cp = buf; 478 } 479 } 480 481 return (cp); 482 } 483 484 void 485 p_flags(int f, const char *format) 486 { 487 488 print_flags_generic(f, rt_bits, format, "flags_pretty"); 489 } 490 491 492 char * 493 routename(struct sockaddr *sa, int flags) 494 { 495 static char line[NI_MAXHOST]; 496 int error, f; 497 498 f = (flags) ? NI_NUMERICHOST : 0; 499 error = getnameinfo(sa, sa->sa_len, line, sizeof(line), 500 NULL, 0, f); 501 if (error) { 502 const void *src; 503 switch (sa->sa_family) { 504 #ifdef INET 505 case AF_INET: 506 src = &satosin(sa)->sin_addr; 507 break; 508 #endif /* INET */ 509 #ifdef INET6 510 case AF_INET6: 511 src = &satosin6(sa)->sin6_addr; 512 break; 513 #endif /* INET6 */ 514 default: 515 return(line); 516 } 517 inet_ntop(sa->sa_family, src, line, sizeof(line) - 1); 518 return (line); 519 } 520 trimdomain(line, strlen(line)); 521 522 return (line); 523 } 524 525 #define NSHIFT(m) ( \ 526 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 527 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 528 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 529 0) 530 531 static void 532 domask(char *dst, size_t buflen, u_long mask) 533 { 534 int b, i; 535 536 if (mask == 0) { 537 *dst = '\0'; 538 return; 539 } 540 i = 0; 541 for (b = 0; b < 32; b++) 542 if (mask & (1 << b)) { 543 int bb; 544 545 i = b; 546 for (bb = b+1; bb < 32; bb++) 547 if (!(mask & (1 << bb))) { 548 i = -1; /* noncontig */ 549 break; 550 } 551 break; 552 } 553 if (i == -1) 554 snprintf(dst, buflen, "&0x%lx", mask); 555 else 556 snprintf(dst, buflen, "/%d", 32-i); 557 } 558 559 /* 560 * Return the name of the network whose address is given. 561 */ 562 const char * 563 netname(struct sockaddr *sa, struct sockaddr *mask) 564 { 565 switch (sa->sa_family) { 566 case AF_INET: 567 if (mask != NULL) 568 return (netname4(satosin(sa)->sin_addr.s_addr, 569 satosin(mask)->sin_addr.s_addr)); 570 else 571 return (netname4(satosin(sa)->sin_addr.s_addr, 572 INADDR_ANY)); 573 break; 574 #ifdef INET6 575 case AF_INET6: 576 return (netname6(satosin6(sa), satosin6(mask))); 577 #endif /* INET6 */ 578 default: 579 return (NULL); 580 } 581 } 582 583 static const char * 584 netname4(in_addr_t in, in_addr_t mask) 585 { 586 char *cp = 0; 587 static char line[MAXHOSTNAMELEN + sizeof("&0xffffffff")]; 588 char nline[INET_ADDRSTRLEN]; 589 struct netent *np = 0; 590 in_addr_t i; 591 592 if (in == INADDR_ANY && mask == 0) { 593 strlcpy(line, "default", sizeof(line)); 594 return (line); 595 } 596 597 /* It is ok to supply host address. */ 598 in &= mask; 599 600 i = ntohl(in); 601 if (!numeric_addr && i) { 602 np = getnetbyaddr(i >> NSHIFT(ntohl(mask)), AF_INET); 603 if (np != NULL) { 604 cp = np->n_name; 605 trimdomain(cp, strlen(cp)); 606 } 607 } 608 if (cp != NULL) 609 strlcpy(line, cp, sizeof(line)); 610 else { 611 inet_ntop(AF_INET, &in, nline, sizeof(nline)); 612 strlcpy(line, nline, sizeof(line)); 613 domask(line + strlen(line), sizeof(line) - strlen(line), ntohl(mask)); 614 } 615 616 return (line); 617 } 618 619 #undef NSHIFT 620 621 #ifdef INET6 622 void 623 in6_fillscopeid(struct sockaddr_in6 *sa6) 624 { 625 #if defined(__KAME__) 626 /* 627 * XXX: This is a special workaround for KAME kernels. 628 * sin6_scope_id field of SA should be set in the future. 629 */ 630 if (IN6_IS_ADDR_LINKLOCAL(&sa6->sin6_addr) || 631 IN6_IS_ADDR_MC_NODELOCAL(&sa6->sin6_addr) || 632 IN6_IS_ADDR_MC_LINKLOCAL(&sa6->sin6_addr)) { 633 if (sa6->sin6_scope_id == 0) 634 sa6->sin6_scope_id = 635 ntohs(*(u_int16_t *)&sa6->sin6_addr.s6_addr[2]); 636 sa6->sin6_addr.s6_addr[2] = sa6->sin6_addr.s6_addr[3] = 0; 637 } 638 #endif 639 } 640 641 /* Mask to length table. To check an invalid value, (length + 1) is used. */ 642 static const u_char masktolen[256] = { 643 [0xff] = 8 + 1, 644 [0xfe] = 7 + 1, 645 [0xfc] = 6 + 1, 646 [0xf8] = 5 + 1, 647 [0xf0] = 4 + 1, 648 [0xe0] = 3 + 1, 649 [0xc0] = 2 + 1, 650 [0x80] = 1 + 1, 651 [0x00] = 0 + 1, 652 }; 653 654 static const char * 655 netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask) 656 { 657 static char line[NI_MAXHOST + sizeof("/xxx") - 1]; 658 struct sockaddr_in6 addr; 659 char nline[NI_MAXHOST]; 660 char maskbuf[sizeof("/xxx")]; 661 u_char *p, *lim; 662 u_char masklen; 663 int i; 664 bool illegal = false; 665 666 if (mask) { 667 p = (u_char *)&mask->sin6_addr; 668 for (masklen = 0, lim = p + 16; p < lim; p++) { 669 if (masktolen[*p] > 0) { 670 /* -1 is required. */ 671 masklen += (masktolen[*p] - 1); 672 } else 673 illegal = true; 674 } 675 if (illegal) 676 xo_error("illegal prefixlen\n"); 677 678 memcpy(&addr, sa6, sizeof(addr)); 679 for (i = 0; i < 16; ++i) 680 addr.sin6_addr.s6_addr[i] &= 681 mask->sin6_addr.s6_addr[i]; 682 sa6 = &addr; 683 } 684 else 685 masklen = 128; 686 687 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 688 return("default"); 689 690 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, nline, sizeof(nline), 691 NULL, 0, NI_NUMERICHOST); 692 if (numeric_addr) 693 strlcpy(line, nline, sizeof(line)); 694 else 695 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, 696 sizeof(line), NULL, 0, 0); 697 if (numeric_addr || strcmp(line, nline) == 0) { 698 snprintf(maskbuf, sizeof(maskbuf), "/%d", masklen); 699 strlcat(line, maskbuf, sizeof(line)); 700 } 701 702 return (line); 703 } 704 #endif /*INET6*/ 705 706 /* 707 * Print routing statistics 708 */ 709 void 710 rt_stats(void) 711 { 712 struct rtstat rtstat; 713 u_long rtsaddr; 714 715 if ((rtsaddr = nl[N_RTSTAT].n_value) == 0) { 716 xo_emit("{W:rtstat: symbol not in namelist}\n"); 717 return; 718 } 719 kread_counters(rtsaddr, (char *)&rtstat, sizeof (rtstat)); 720 xo_emit("{T:routing}:\n"); 721 722 #define p(f, m) if (rtstat.f || sflag <= 1) \ 723 xo_emit(m, rtstat.f, plural(rtstat.f)) 724 725 p(rts_badredirect, "\t{:bad-redirects/%ju} " 726 "{N:/bad routing redirect%s}\n"); 727 p(rts_dynamic, "\t{:dynamically-created/%ju} " 728 "{N:/dynamically created route%s}\n"); 729 p(rts_newgateway, "\t{:new-gateways/%ju} " 730 "{N:/new gateway%s due to redirects}\n"); 731 p(rts_unreach, "\t{:unreachable-destination/%ju} " 732 "{N:/destination%s found unreachable}\n"); 733 p(rts_wildcard, "\t{:wildcard-uses/%ju} " 734 "{N:/use%s of a wildcard route}\n"); 735 #undef p 736 } 737