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