1 /*- 2 * Copyright (c) 1983, 1988, 1993 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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #if 0 31 #ifndef lint 32 static char sccsid[] = "From: @(#)route.c 8.6 (Berkeley) 4/28/95"; 33 #endif /* not lint */ 34 #endif 35 36 #include <sys/cdefs.h> 37 __FBSDID("$FreeBSD$"); 38 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 <nlist.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 71 /* 72 * Definitions for showing gateway flags. 73 */ 74 static struct bits { 75 u_long b_mask; 76 char b_val; 77 const char *b_name; 78 } 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 /* 100 * kvm(3) bindings for every needed symbol 101 */ 102 static struct nlist rl[] = { 103 #define N_RTSTAT 0 104 { .n_name = "_rtstat" }, 105 #define N_RTTRASH 1 106 { .n_name = "_rttrash" }, 107 { .n_name = NULL }, 108 }; 109 110 struct ifmap_entry { 111 char ifname[IFNAMSIZ]; 112 }; 113 static struct ifmap_entry *ifmap; 114 static int ifmap_size; 115 static struct timespec uptime; 116 117 static const char *netname4(in_addr_t, in_addr_t); 118 static const char *netname6(struct sockaddr_in6 *, struct sockaddr_in6 *); 119 static void p_rtable_sysctl(int, int); 120 static void p_rtentry_sysctl(const char *name, struct rt_msghdr *); 121 static void p_sockaddr(const char *name, struct sockaddr *, struct sockaddr *, 122 int, int); 123 static const char *fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, 124 int flags); 125 static void p_flags(int, const char *); 126 static const char *fmt_flags(int f); 127 static void domask(char *, in_addr_t, u_long); 128 129 130 /* 131 * Print routing tables. 132 */ 133 void 134 routepr(int fibnum, int af) 135 { 136 size_t intsize; 137 int numfibs; 138 139 if (live == 0) 140 return; 141 142 intsize = sizeof(int); 143 if (fibnum == -1 && 144 sysctlbyname("net.my_fibnum", &fibnum, &intsize, NULL, 0) == -1) 145 fibnum = 0; 146 if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1) 147 numfibs = 1; 148 if (fibnum < 0 || fibnum > numfibs - 1) 149 errx(EX_USAGE, "%d: invalid fib", fibnum); 150 /* 151 * Since kernel & userland use different timebase 152 * (time_uptime vs time_second) and we are reading kernel memory 153 * directly we should do rt_expire --> expire_time conversion. 154 */ 155 if (clock_gettime(CLOCK_UPTIME, &uptime) < 0) 156 err(EX_OSERR, "clock_gettime() failed"); 157 158 xo_open_container("route-information"); 159 xo_emit("{T:Routing tables}"); 160 if (fibnum) 161 xo_emit(" ({L:fib}: {:fib/%d})", fibnum); 162 xo_emit("\n"); 163 p_rtable_sysctl(fibnum, af); 164 xo_close_container("route-information"); 165 } 166 167 168 /* 169 * Print address family header before a section of the routing table. 170 */ 171 void 172 pr_family(int af1) 173 { 174 const char *afname; 175 176 switch (af1) { 177 case AF_INET: 178 afname = "Internet"; 179 break; 180 #ifdef INET6 181 case AF_INET6: 182 afname = "Internet6"; 183 break; 184 #endif /*INET6*/ 185 case AF_ISO: 186 afname = "ISO"; 187 break; 188 case AF_CCITT: 189 afname = "X.25"; 190 break; 191 case AF_NETGRAPH: 192 afname = "Netgraph"; 193 break; 194 default: 195 afname = NULL; 196 break; 197 } 198 if (afname) 199 xo_emit("\n{k:address-family/%s}:\n", afname); 200 else 201 xo_emit("\n{L:Protocol Family} {k:address-family/%d}:\n", af1); 202 } 203 204 /* column widths; each followed by one space */ 205 #ifndef INET6 206 #define WID_DST_DEFAULT(af) 18 /* width of destination column */ 207 #define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 208 #define WID_IF_DEFAULT(af) (Wflag ? 10 : 8) /* width of netif column */ 209 #else 210 #define WID_DST_DEFAULT(af) \ 211 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 212 #define WID_GW_DEFAULT(af) \ 213 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 214 #define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 10 : 8)) 215 #endif /*INET6*/ 216 217 static int wid_dst; 218 static int wid_gw; 219 static int wid_flags; 220 static int wid_pksent; 221 static int wid_mtu; 222 static int wid_if; 223 static int wid_expire; 224 225 /* 226 * Print header for routing table columns. 227 */ 228 static void 229 pr_rthdr(int af1 __unused) 230 { 231 232 if (Wflag) { 233 xo_emit("{T:/%-*.*s} {T:/%-*.*s} {T:/%-*.*s} {T:/%*.*s} " 234 "{T:/%*.*s} {T:/%*.*s} {T:/%*s}\n", 235 wid_dst, wid_dst, "Destination", 236 wid_gw, wid_gw, "Gateway", 237 wid_flags, wid_flags, "Flags", 238 wid_pksent, wid_pksent, "Use", 239 wid_mtu, wid_mtu, "Mtu", 240 wid_if, wid_if, "Netif", 241 wid_expire, "Expire"); 242 } else { 243 xo_emit("{T:/%-*.*s} {T:/%-*.*s} {T:/%-*.*s} {T:/%*.*s} " 244 "{T:/%*s}\n", 245 wid_dst, wid_dst, "Destination", 246 wid_gw, wid_gw, "Gateway", 247 wid_flags, wid_flags, "Flags", 248 wid_if, wid_if, "Netif", 249 wid_expire, "Expire"); 250 } 251 } 252 253 static void 254 p_rtable_sysctl(int fibnum, int af) 255 { 256 size_t needed; 257 int mib[7]; 258 char *buf, *next, *lim; 259 struct rt_msghdr *rtm; 260 struct sockaddr *sa; 261 int fam = AF_UNSPEC, ifindex = 0, size; 262 int need_table_close = false; 263 264 struct ifaddrs *ifap, *ifa; 265 struct sockaddr_dl *sdl; 266 267 /* 268 * Retrieve interface list at first 269 * since we need #ifindex -> if_xname match 270 */ 271 if (getifaddrs(&ifap) != 0) 272 err(EX_OSERR, "getifaddrs"); 273 274 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 275 276 if (ifa->ifa_addr->sa_family != AF_LINK) 277 continue; 278 279 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 280 ifindex = sdl->sdl_index; 281 282 if (ifindex >= ifmap_size) { 283 size = roundup(ifindex + 1, 32) * 284 sizeof(struct ifmap_entry); 285 if ((ifmap = realloc(ifmap, size)) == NULL) 286 errx(2, "realloc(%d) failed", size); 287 memset(&ifmap[ifmap_size], 0, 288 size - ifmap_size * 289 sizeof(struct ifmap_entry)); 290 291 ifmap_size = roundup(ifindex + 1, 32); 292 } 293 294 if (*ifmap[ifindex].ifname != '\0') 295 continue; 296 297 strlcpy(ifmap[ifindex].ifname, ifa->ifa_name, IFNAMSIZ); 298 } 299 300 freeifaddrs(ifap); 301 302 mib[0] = CTL_NET; 303 mib[1] = PF_ROUTE; 304 mib[2] = 0; 305 mib[3] = af; 306 mib[4] = NET_RT_DUMP; 307 mib[5] = 0; 308 mib[6] = fibnum; 309 if (sysctl(mib, nitems(mib), NULL, &needed, NULL, 0) < 0) 310 err(EX_OSERR, "sysctl: net.route.0.%d.dump.%d estimate", af, 311 fibnum); 312 if ((buf = malloc(needed)) == NULL) 313 errx(2, "malloc(%lu)", (unsigned long)needed); 314 if (sysctl(mib, nitems(mib), buf, &needed, NULL, 0) < 0) 315 err(1, "sysctl: net.route.0.%d.dump.%d", af, fibnum); 316 lim = buf + needed; 317 xo_open_container("route-table"); 318 xo_open_list("rt-family"); 319 for (next = buf; next < lim; next += rtm->rtm_msglen) { 320 rtm = (struct rt_msghdr *)next; 321 if (rtm->rtm_version != RTM_VERSION) 322 continue; 323 /* 324 * Peek inside header to determine AF 325 */ 326 sa = (struct sockaddr *)(rtm + 1); 327 /* Only print family first time. */ 328 if (fam != sa->sa_family) { 329 if (need_table_close) { 330 xo_close_list("rt-entry"); 331 xo_close_instance("rt-family"); 332 } 333 need_table_close = true; 334 335 fam = sa->sa_family; 336 wid_dst = WID_DST_DEFAULT(fam); 337 wid_gw = WID_GW_DEFAULT(fam); 338 wid_flags = 6; 339 wid_pksent = 8; 340 wid_mtu = 6; 341 wid_if = WID_IF_DEFAULT(fam); 342 wid_expire = 6; 343 xo_open_instance("rt-family"); 344 pr_family(fam); 345 xo_open_list("rt-entry"); 346 347 pr_rthdr(fam); 348 } 349 p_rtentry_sysctl("rt-entry", rtm); 350 } 351 if (need_table_close) { 352 xo_close_list("rt-entry"); 353 xo_close_instance("rt-family"); 354 } 355 xo_close_list("rt-family"); 356 xo_close_container("route-table"); 357 free(buf); 358 } 359 360 static void 361 p_rtentry_sysctl(const char *name, struct rt_msghdr *rtm) 362 { 363 struct sockaddr *sa, *addr[RTAX_MAX]; 364 char buffer[128]; 365 char prettyname[128]; 366 int i; 367 368 xo_open_instance(name); 369 sa = (struct sockaddr *)(rtm + 1); 370 for (i = 0; i < RTAX_MAX; i++) { 371 if (rtm->rtm_addrs & (1 << i)) 372 addr[i] = sa; 373 sa = (struct sockaddr *)((char *)sa + SA_SIZE(sa)); 374 } 375 376 p_sockaddr("destination", addr[RTAX_DST], addr[RTAX_NETMASK], 377 rtm->rtm_flags, wid_dst); 378 p_sockaddr("gateway", addr[RTAX_GATEWAY], NULL, RTF_HOST, wid_gw); 379 snprintf(buffer, sizeof(buffer), "{[:-%d}{:flags/%%s}{]:} ", 380 wid_flags); 381 p_flags(rtm->rtm_flags, buffer); 382 if (Wflag) { 383 xo_emit("{t:use/%*lu} ", wid_pksent, rtm->rtm_rmx.rmx_pksent); 384 385 if (rtm->rtm_rmx.rmx_mtu != 0) 386 xo_emit("{t:mtu/%*lu} ", wid_mtu, rtm->rtm_rmx.rmx_mtu); 387 else 388 xo_emit("{P:/%*s} ", wid_mtu, ""); 389 } 390 391 memset(prettyname, 0, sizeof(prettyname)); 392 if (rtm->rtm_index < ifmap_size) { 393 strlcpy(prettyname, ifmap[rtm->rtm_index].ifname, 394 sizeof(prettyname)); 395 if (*prettyname == '\0') 396 strlcpy(prettyname, "---", sizeof(prettyname)); 397 } 398 399 xo_emit("{t:interface-name/%*.*s}", wid_if, wid_if, prettyname); 400 if (rtm->rtm_rmx.rmx_expire) { 401 time_t expire_time; 402 403 if ((expire_time = rtm->rtm_rmx.rmx_expire - uptime.tv_sec) > 0) 404 xo_emit(" {:expire-time/%*d}", wid_expire, 405 (int)expire_time); 406 } 407 408 xo_emit("\n"); 409 xo_close_instance(name); 410 } 411 412 static void 413 p_sockaddr(const char *name, struct sockaddr *sa, struct sockaddr *mask, 414 int flags, int width) 415 { 416 const char *cp; 417 char buf[128]; 418 419 cp = fmt_sockaddr(sa, mask, flags); 420 421 if (width < 0) { 422 snprintf(buf, sizeof(buf), "{:%s/%%s} ", name); 423 xo_emit(buf, cp); 424 } else { 425 if (Wflag != 0 || numeric_addr) { 426 snprintf(buf, sizeof(buf), "{[:%d}{:%s/%%s}{]:} ", 427 -width, name); 428 xo_emit(buf, cp); 429 } else { 430 snprintf(buf, sizeof(buf), "{[:%d}{:%s/%%-.*s}{]:} ", 431 -width, name); 432 xo_emit(buf, width, cp); 433 } 434 } 435 } 436 437 static const char * 438 fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 439 { 440 static char buf[128]; 441 const char *cp; 442 443 if (sa == NULL) 444 return ("null"); 445 446 switch(sa->sa_family) { 447 #ifdef INET6 448 case AF_INET6: 449 /* 450 * The sa6->sin6_scope_id must be filled here because 451 * this sockaddr is extracted from kmem(4) directly 452 * and has KAME-specific embedded scope id in 453 * sa6->sin6_addr.s6_addr[2]. 454 */ 455 in6_fillscopeid(satosin6(sa)); 456 /* FALLTHROUGH */ 457 #endif /*INET6*/ 458 case AF_INET: 459 if (flags & RTF_HOST) 460 cp = routename(sa, numeric_addr); 461 else if (mask) 462 cp = netname(sa, mask); 463 else 464 cp = netname(sa, NULL); 465 break; 466 case AF_NETGRAPH: 467 { 468 strlcpy(buf, ((struct sockaddr_ng *)sa)->sg_data, 469 sizeof(buf)); 470 cp = buf; 471 break; 472 } 473 case AF_LINK: 474 { 475 #if 0 476 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 477 478 /* Interface route. */ 479 if (sdl->sdl_nlen) 480 cp = sdl->sdl_data; 481 else 482 #endif 483 cp = routename(sa, 1); 484 break; 485 } 486 default: 487 { 488 u_char *s = (u_char *)sa->sa_data, *slim; 489 char *cq, *cqlim; 490 491 cq = buf; 492 slim = sa->sa_len + (u_char *) sa; 493 cqlim = cq + sizeof(buf) - 6; 494 cq += sprintf(cq, "(%d)", sa->sa_family); 495 while (s < slim && cq < cqlim) { 496 cq += sprintf(cq, " %02x", *s++); 497 if (s < slim) 498 cq += sprintf(cq, "%02x", *s++); 499 } 500 cp = buf; 501 } 502 } 503 504 return (cp); 505 } 506 507 static void 508 p_flags(int f, const char *format) 509 { 510 struct bits *p; 511 512 xo_emit(format, fmt_flags(f)); 513 514 xo_open_list("flags_pretty"); 515 for (p = bits; p->b_mask; p++) 516 if (p->b_mask & f) 517 xo_emit("{le:flags_pretty/%s}", p->b_name); 518 xo_close_list("flags_pretty"); 519 } 520 521 static const char * 522 fmt_flags(int f) 523 { 524 static char name[33]; 525 char *flags; 526 struct bits *p = bits; 527 528 for (flags = name; p->b_mask; p++) 529 if (p->b_mask & f) 530 *flags++ = p->b_val; 531 *flags = '\0'; 532 return (name); 533 } 534 535 char * 536 routename(struct sockaddr *sa, int flags) 537 { 538 static char line[NI_MAXHOST]; 539 int error, f; 540 541 f = (flags) ? NI_NUMERICHOST : 0; 542 error = getnameinfo(sa, sa->sa_len, line, sizeof(line), 543 NULL, 0, f); 544 if (error) { 545 const void *src; 546 switch (sa->sa_family) { 547 #ifdef INET 548 case AF_INET: 549 src = &satosin(sa)->sin_addr; 550 break; 551 #endif /* INET */ 552 #ifdef INET6 553 case AF_INET6: 554 src = &satosin6(sa)->sin6_addr; 555 break; 556 #endif /* INET6 */ 557 default: 558 return(line); 559 } 560 inet_ntop(sa->sa_family, src, line, sizeof(line) - 1); 561 return (line); 562 } 563 trimdomain(line, strlen(line)); 564 565 return (line); 566 } 567 568 #define NSHIFT(m) ( \ 569 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 570 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 571 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 572 0) 573 574 static void 575 domask(char *dst, in_addr_t addr __unused, u_long mask) 576 { 577 int b, i; 578 579 if (mask == 0) { 580 *dst = '\0'; 581 return; 582 } 583 i = 0; 584 for (b = 0; b < 32; b++) 585 if (mask & (1 << b)) { 586 int bb; 587 588 i = b; 589 for (bb = b+1; bb < 32; bb++) 590 if (!(mask & (1 << bb))) { 591 i = -1; /* noncontig */ 592 break; 593 } 594 break; 595 } 596 if (i == -1) 597 sprintf(dst, "&0x%lx", mask); 598 else 599 sprintf(dst, "/%d", 32-i); 600 } 601 602 /* 603 * Return the name of the network whose address is given. 604 */ 605 const char * 606 netname(struct sockaddr *sa, struct sockaddr *mask) 607 { 608 switch (sa->sa_family) { 609 case AF_INET: 610 if (mask != NULL) 611 return (netname4(satosin(sa)->sin_addr.s_addr, 612 satosin(mask)->sin_addr.s_addr)); 613 else 614 return (netname4(satosin(sa)->sin_addr.s_addr, 615 INADDR_ANY)); 616 break; 617 #ifdef INET6 618 case AF_INET6: 619 return (netname6(satosin6(sa), satosin6(mask))); 620 #endif /* INET6 */ 621 default: 622 return (NULL); 623 } 624 } 625 626 static const char * 627 netname4(in_addr_t in, in_addr_t mask) 628 { 629 char *cp = 0; 630 static char line[MAXHOSTNAMELEN + sizeof("/xx")]; 631 char nline[INET_ADDRSTRLEN]; 632 struct netent *np = 0; 633 in_addr_t i; 634 635 if (in == INADDR_ANY && mask == 0) { 636 strlcpy(line, "default", sizeof(line)); 637 return (line); 638 } 639 640 /* It is ok to supply host address. */ 641 in &= mask; 642 643 i = ntohl(in); 644 if (!numeric_addr && i) { 645 np = getnetbyaddr(i >> NSHIFT(ntohl(mask)), AF_INET); 646 if (np != NULL) { 647 cp = np->n_name; 648 trimdomain(cp, strlen(cp)); 649 } 650 } 651 inet_ntop(AF_INET, &in, nline, sizeof(line)); 652 if (cp != NULL) { 653 if (strcpy(cp, nline) != 0) 654 return (line); 655 strlcpy(line, cp, sizeof(line)); 656 } else 657 strlcpy(line, nline, sizeof(line)); 658 domask(line + strlen(line), i, ntohl(mask)); 659 660 return (line); 661 } 662 663 #undef NSHIFT 664 665 #ifdef INET6 666 void 667 in6_fillscopeid(struct sockaddr_in6 *sa6) 668 { 669 #if defined(__KAME__) 670 /* 671 * XXX: This is a special workaround for KAME kernels. 672 * sin6_scope_id field of SA should be set in the future. 673 */ 674 if (IN6_IS_ADDR_LINKLOCAL(&sa6->sin6_addr) || 675 IN6_IS_ADDR_MC_NODELOCAL(&sa6->sin6_addr) || 676 IN6_IS_ADDR_MC_LINKLOCAL(&sa6->sin6_addr)) { 677 if (sa6->sin6_scope_id == 0) 678 sa6->sin6_scope_id = 679 ntohs(*(u_int16_t *)&sa6->sin6_addr.s6_addr[2]); 680 sa6->sin6_addr.s6_addr[2] = sa6->sin6_addr.s6_addr[3] = 0; 681 } 682 #endif 683 } 684 685 /* Mask to length table. To check an invalid value, (length + 1) is used. */ 686 static int masktolen[256] = { 687 [0xff] = 8 + 1, 688 [0xfe] = 7 + 1, 689 [0xfc] = 6 + 1, 690 [0xf8] = 5 + 1, 691 [0xf0] = 4 + 1, 692 [0xe0] = 3 + 1, 693 [0xc0] = 2 + 1, 694 [0x80] = 1 + 1, 695 [0x00] = 0 + 1, 696 }; 697 698 static const char * 699 netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask) 700 { 701 static char line[NI_MAXHOST + sizeof("/xxx") - 1]; 702 char nline[NI_MAXHOST]; 703 u_char *p, *lim; 704 int masklen, illegal = 0; 705 706 if (mask) { 707 p = (u_char *)&mask->sin6_addr; 708 for (masklen = 0, lim = p + 16; p < lim; p++) { 709 if (masktolen[*p] > 0) 710 /* -1 is required. */ 711 masklen += masktolen[*p] - 1; 712 else 713 illegal++; 714 } 715 if (illegal) 716 xo_error("illegal prefixlen\n"); 717 } 718 else 719 masklen = 128; 720 721 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 722 return("default"); 723 724 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, nline, sizeof(nline), 725 NULL, 0, NI_NUMERICHOST); 726 if (numeric_addr) 727 strlcpy(line, nline, sizeof(line)); 728 else 729 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, 730 sizeof(line), NULL, 0, 0); 731 if (numeric_addr || strcmp(line, nline) == 0) 732 sprintf(&line[strlen(line)], "/%d", masklen); 733 734 return (line); 735 } 736 #endif /*INET6*/ 737 738 /* 739 * Print routing statistics 740 */ 741 void 742 rt_stats(void) 743 { 744 struct rtstat rtstat; 745 u_long rtsaddr, rttaddr; 746 int rttrash; 747 748 kresolve_list(rl); 749 750 if ((rtsaddr = rl[N_RTSTAT].n_value) == 0) { 751 xo_emit("{W:rtstat: symbol not in namelist}\n"); 752 return; 753 } 754 if ((rttaddr = rl[N_RTTRASH].n_value) == 0) { 755 xo_emit("{W:rttrash: symbol not in namelist}\n"); 756 return; 757 } 758 kread(rtsaddr, (char *)&rtstat, sizeof (rtstat)); 759 kread(rttaddr, (char *)&rttrash, sizeof (rttrash)); 760 xo_emit("{T:routing}:\n"); 761 762 #define p(f, m) if (rtstat.f || sflag <= 1) \ 763 xo_emit(m, rtstat.f, plural(rtstat.f)) 764 765 p(rts_badredirect, "\t{:bad-redirects/%hu} " 766 "{N:/bad routing redirect%s}\n"); 767 p(rts_dynamic, "\t{:dynamically-created/%hu} " 768 "{N:/dynamically created route%s}\n"); 769 p(rts_newgateway, "\t{:new-gateways/%hu} " 770 "{N:/new gateway%s due to redirects}\n"); 771 p(rts_unreach, "\t{:unreachable-destination/%hu} " 772 "{N:/destination%s found unreachable}\n"); 773 p(rts_wildcard, "\t{:wildcard-uses/%hu} " 774 "{N:/use%s of a wildcard route}\n"); 775 #undef p 776 777 if (rttrash || sflag <= 1) 778 xo_emit("\t{:unused-but-not-freed/%u} " 779 "{N:/route%s not in table but not freed}\n", 780 rttrash, plural(rttrash)); 781 } 782