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 <stdint.h> 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include <stdbool.h> 63 #include <string.h> 64 #include <sysexits.h> 65 #include <unistd.h> 66 #include <err.h> 67 #include <libxo/xo.h> 68 #include "netstat.h" 69 #include "nl_defs.h" 70 71 #ifdef FSTACK 72 #include <time.h> 73 #endif 74 75 /* 76 * Definitions for showing gateway flags. 77 */ 78 static struct bits { 79 u_long b_mask; 80 char b_val; 81 const char *b_name; 82 } bits[] = { 83 { RTF_UP, 'U', "up" }, 84 { RTF_GATEWAY, 'G', "gateway" }, 85 { RTF_HOST, 'H', "host" }, 86 { RTF_REJECT, 'R', "reject" }, 87 { RTF_DYNAMIC, 'D', "dynamic" }, 88 { RTF_MODIFIED, 'M', "modified" }, 89 { RTF_DONE, 'd', "done" }, /* Completed -- for routing msgs only */ 90 { RTF_XRESOLVE, 'X', "xresolve" }, 91 { RTF_STATIC, 'S', "static" }, 92 { RTF_PROTO1, '1', "proto1" }, 93 { RTF_PROTO2, '2', "proto2" }, 94 { RTF_PROTO3, '3', "proto3" }, 95 { RTF_BLACKHOLE,'B', "blackhole" }, 96 { RTF_BROADCAST,'b', "broadcast" }, 97 #ifdef RTF_LLINFO 98 { RTF_LLINFO, 'L', "llinfo" }, 99 #endif 100 { 0 , 0, NULL } 101 }; 102 103 struct ifmap_entry { 104 char ifname[IFNAMSIZ]; 105 }; 106 static struct ifmap_entry *ifmap; 107 static int ifmap_size; 108 static struct timespec uptime; 109 110 static const char *netname4(in_addr_t, in_addr_t); 111 #ifdef INET6 112 static const char *netname6(struct sockaddr_in6 *, struct sockaddr_in6 *); 113 #endif 114 static void p_rtable_sysctl(int, int); 115 static void p_rtentry_sysctl(const char *name, struct rt_msghdr *); 116 static int p_sockaddr(const char *name, struct sockaddr *, struct sockaddr *, 117 int, int); 118 static const char *fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, 119 int flags); 120 static void p_flags(int, const char *); 121 static const char *fmt_flags(int f); 122 static void domask(char *, in_addr_t, u_long); 123 124 125 /* 126 * Print routing tables. 127 */ 128 void 129 routepr(int fibnum, int af) 130 { 131 size_t intsize; 132 int numfibs; 133 134 if (live == 0) 135 return; 136 137 intsize = sizeof(int); 138 if (fibnum == -1 && 139 sysctlbyname("net.my_fibnum", &fibnum, &intsize, NULL, 0) == -1) 140 fibnum = 0; 141 if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1) 142 numfibs = 1; 143 if (fibnum < 0 || fibnum > numfibs - 1) 144 errx(EX_USAGE, "%d: invalid fib", fibnum); 145 /* 146 * Since kernel & userland use different timebase 147 * (time_uptime vs time_second) and we are reading kernel memory 148 * directly we should do rt_expire --> expire_time conversion. 149 */ 150 #ifndef FSTACK 151 if (clock_gettime(CLOCK_UPTIME, &uptime) < 0) 152 #else 153 if (clock_gettime(CLOCK_BOOTTIME, &uptime) < 0) 154 #endif 155 err(EX_OSERR, "clock_gettime() failed"); 156 157 xo_open_container("route-information"); 158 xo_emit("{T:Routing tables}"); 159 if (fibnum) 160 xo_emit(" ({L:fib}: {:fib/%d})", fibnum); 161 xo_emit("\n"); 162 p_rtable_sysctl(fibnum, af); 163 xo_close_container("route-information"); 164 } 165 166 167 /* 168 * Print address family header before a section of the routing table. 169 */ 170 void 171 pr_family(int af1) 172 { 173 const char *afname; 174 175 switch (af1) { 176 case AF_INET: 177 afname = "Internet"; 178 break; 179 #ifdef INET6 180 case AF_INET6: 181 afname = "Internet6"; 182 break; 183 #endif /*INET6*/ 184 case AF_ISO: 185 afname = "ISO"; 186 break; 187 case AF_CCITT: 188 afname = "X.25"; 189 break; 190 case AF_NETGRAPH: 191 afname = "Netgraph"; 192 break; 193 default: 194 afname = NULL; 195 break; 196 } 197 if (afname) 198 xo_emit("\n{k:address-family/%s}:\n", afname); 199 else 200 xo_emit("\n{L:Protocol Family} {k:address-family/%d}:\n", af1); 201 } 202 203 /* column widths; each followed by one space */ 204 #ifndef INET6 205 #define WID_DST_DEFAULT(af) 18 /* width of destination column */ 206 #define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 207 #define WID_IF_DEFAULT(af) (Wflag ? 10 : 8) /* width of netif column */ 208 #else 209 #define WID_DST_DEFAULT(af) \ 210 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 211 #define WID_GW_DEFAULT(af) \ 212 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 213 #define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 10 : 8)) 214 #endif /*INET6*/ 215 216 static int wid_dst; 217 static int wid_gw; 218 static int wid_flags; 219 static int wid_pksent; 220 static int wid_mtu; 221 static int wid_if; 222 static int wid_expire; 223 224 /* 225 * Print header for routing table columns. 226 */ 227 static void 228 pr_rthdr(int af1 __unused) 229 { 230 231 if (Wflag) { 232 xo_emit("{T:/%-*.*s} {T:/%-*.*s} {T:/%-*.*s} {T:/%*.*s} " 233 "{T:/%*.*s} {T:/%*.*s} {T:/%*s}\n", 234 wid_dst, wid_dst, "Destination", 235 wid_gw, wid_gw, "Gateway", 236 wid_flags, wid_flags, "Flags", 237 wid_pksent, wid_pksent, "Use", 238 wid_mtu, wid_mtu, "Mtu", 239 wid_if, wid_if, "Netif", 240 wid_expire, "Expire"); 241 } else { 242 xo_emit("{T:/%-*.*s} {T:/%-*.*s} {T:/%-*.*s} {T:/%*.*s} " 243 "{T:/%*s}\n", 244 wid_dst, wid_dst, "Destination", 245 wid_gw, wid_gw, "Gateway", 246 wid_flags, wid_flags, "Flags", 247 wid_if, wid_if, "Netif", 248 wid_expire, "Expire"); 249 } 250 } 251 252 static void 253 p_rtable_sysctl(int fibnum, int af) 254 { 255 size_t needed; 256 int mib[7]; 257 char *buf, *next, *lim; 258 struct rt_msghdr *rtm; 259 struct sockaddr *sa; 260 int fam = AF_UNSPEC, ifindex = 0, size; 261 int need_table_close = false; 262 263 struct ifaddrs *ifap, *ifa; 264 struct sockaddr_dl *sdl; 265 266 /* 267 * Retrieve interface list at first 268 * since we need #ifindex -> if_xname match 269 */ 270 if (getifaddrs(&ifap) != 0) 271 err(EX_OSERR, "getifaddrs"); 272 273 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 274 275 if (ifa->ifa_addr->sa_family != AF_LINK) 276 continue; 277 278 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 279 ifindex = sdl->sdl_index; 280 281 if (ifindex >= ifmap_size) { 282 size = roundup(ifindex + 1, 32) * 283 sizeof(struct ifmap_entry); 284 if ((ifmap = realloc(ifmap, size)) == NULL) 285 errx(2, "realloc(%d) failed", size); 286 memset(&ifmap[ifmap_size], 0, 287 size - ifmap_size * 288 sizeof(struct ifmap_entry)); 289 290 ifmap_size = roundup(ifindex + 1, 32); 291 } 292 293 if (*ifmap[ifindex].ifname != '\0') 294 continue; 295 296 strlcpy(ifmap[ifindex].ifname, ifa->ifa_name, IFNAMSIZ); 297 } 298 299 freeifaddrs(ifap); 300 301 mib[0] = CTL_NET; 302 mib[1] = PF_ROUTE; 303 mib[2] = 0; 304 mib[3] = af; 305 mib[4] = NET_RT_DUMP; 306 mib[5] = 0; 307 mib[6] = fibnum; 308 if (sysctl(mib, nitems(mib), NULL, &needed, NULL, 0) < 0) 309 err(EX_OSERR, "sysctl: net.route.0.%d.dump.%d estimate", af, 310 fibnum); 311 if ((buf = malloc(needed)) == NULL) 312 errx(2, "malloc(%lu)", (unsigned long)needed); 313 if (sysctl(mib, nitems(mib), buf, &needed, NULL, 0) < 0) 314 err(1, "sysctl: net.route.0.%d.dump.%d", af, fibnum); 315 lim = buf + needed; 316 xo_open_container("route-table"); 317 xo_open_list("rt-family"); 318 for (next = buf; next < lim; next += rtm->rtm_msglen) { 319 rtm = (struct rt_msghdr *)next; 320 if (rtm->rtm_version != RTM_VERSION) 321 continue; 322 /* 323 * Peek inside header to determine AF 324 */ 325 sa = (struct sockaddr *)(rtm + 1); 326 /* Only print family first time. */ 327 if (fam != sa->sa_family) { 328 if (need_table_close) { 329 xo_close_list("rt-entry"); 330 xo_close_instance("rt-family"); 331 } 332 need_table_close = true; 333 334 fam = sa->sa_family; 335 wid_dst = WID_DST_DEFAULT(fam); 336 wid_gw = WID_GW_DEFAULT(fam); 337 wid_flags = 6; 338 wid_pksent = 8; 339 wid_mtu = 6; 340 wid_if = WID_IF_DEFAULT(fam); 341 wid_expire = 6; 342 xo_open_instance("rt-family"); 343 pr_family(fam); 344 xo_open_list("rt-entry"); 345 346 pr_rthdr(fam); 347 } 348 p_rtentry_sysctl("rt-entry", rtm); 349 } 350 if (need_table_close) { 351 xo_close_list("rt-entry"); 352 xo_close_instance("rt-family"); 353 } 354 xo_close_list("rt-family"); 355 xo_close_container("route-table"); 356 free(buf); 357 } 358 359 static void 360 p_rtentry_sysctl(const char *name, struct rt_msghdr *rtm) 361 { 362 struct sockaddr *sa, *addr[RTAX_MAX]; 363 char buffer[128]; 364 char prettyname[128]; 365 int i, protrusion; 366 367 xo_open_instance(name); 368 sa = (struct sockaddr *)(rtm + 1); 369 for (i = 0; i < RTAX_MAX; i++) { 370 if (rtm->rtm_addrs & (1 << i)) 371 addr[i] = sa; 372 sa = (struct sockaddr *)((char *)sa + SA_SIZE(sa)); 373 } 374 375 protrusion = p_sockaddr("destination", addr[RTAX_DST], 376 addr[RTAX_NETMASK], 377 rtm->rtm_flags, wid_dst); 378 protrusion = p_sockaddr("gateway", addr[RTAX_GATEWAY], NULL, RTF_HOST, 379 wid_gw - protrusion); 380 snprintf(buffer, sizeof(buffer), "{[:-%d}{:flags/%%s}{]:} ", 381 wid_flags - protrusion); 382 p_flags(rtm->rtm_flags, buffer); 383 if (Wflag) { 384 xo_emit("{t:use/%*lu} ", wid_pksent, rtm->rtm_rmx.rmx_pksent); 385 386 if (rtm->rtm_rmx.rmx_mtu != 0) 387 xo_emit("{t:mtu/%*lu} ", wid_mtu, rtm->rtm_rmx.rmx_mtu); 388 else 389 xo_emit("{P:/%*s} ", wid_mtu, ""); 390 } 391 392 memset(prettyname, 0, sizeof(prettyname)); 393 if (rtm->rtm_index < ifmap_size) { 394 strlcpy(prettyname, ifmap[rtm->rtm_index].ifname, 395 sizeof(prettyname)); 396 if (*prettyname == '\0') 397 strlcpy(prettyname, "---", sizeof(prettyname)); 398 } 399 400 if (Wflag) 401 xo_emit("{t:interface-name/%*s}", wid_if, prettyname); 402 else 403 xo_emit("{t:interface-name/%*.*s}", wid_if, wid_if, 404 prettyname); 405 if (rtm->rtm_rmx.rmx_expire) { 406 time_t expire_time; 407 408 if ((expire_time = rtm->rtm_rmx.rmx_expire - uptime.tv_sec) > 0) 409 xo_emit(" {:expire-time/%*d}", wid_expire, 410 (int)expire_time); 411 } 412 413 xo_emit("\n"); 414 xo_close_instance(name); 415 } 416 417 static int 418 p_sockaddr(const char *name, struct sockaddr *sa, struct sockaddr *mask, 419 int flags, int width) 420 { 421 const char *cp; 422 char buf[128]; 423 int protrusion; 424 425 cp = fmt_sockaddr(sa, mask, flags); 426 427 if (width < 0) { 428 snprintf(buf, sizeof(buf), "{:%s/%%s} ", name); 429 xo_emit(buf, cp); 430 protrusion = 0; 431 } else { 432 if (Wflag != 0 || numeric_addr) { 433 snprintf(buf, sizeof(buf), "{[:%d}{:%s/%%s}{]:} ", 434 -width, name); 435 xo_emit(buf, cp); 436 protrusion = strlen(cp) - width; 437 if (protrusion < 0) 438 protrusion = 0; 439 } else { 440 snprintf(buf, sizeof(buf), "{[:%d}{:%s/%%-.*s}{]:} ", 441 -width, name); 442 xo_emit(buf, width, cp); 443 protrusion = 0; 444 } 445 } 446 return (protrusion); 447 } 448 449 static const char * 450 fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 451 { 452 static char buf[128]; 453 const char *cp; 454 455 if (sa == NULL) 456 return ("null"); 457 458 switch(sa->sa_family) { 459 #ifdef INET6 460 case AF_INET6: 461 /* 462 * The sa6->sin6_scope_id must be filled here because 463 * this sockaddr is extracted from kmem(4) directly 464 * and has KAME-specific embedded scope id in 465 * sa6->sin6_addr.s6_addr[2]. 466 */ 467 in6_fillscopeid(satosin6(sa)); 468 /* FALLTHROUGH */ 469 #endif /*INET6*/ 470 case AF_INET: 471 if (flags & RTF_HOST) 472 cp = routename(sa, numeric_addr); 473 else if (mask) 474 cp = netname(sa, mask); 475 else 476 cp = netname(sa, NULL); 477 break; 478 case AF_NETGRAPH: 479 { 480 strlcpy(buf, ((struct sockaddr_ng *)sa)->sg_data, 481 sizeof(buf)); 482 cp = buf; 483 break; 484 } 485 case AF_LINK: 486 { 487 #if 0 488 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 489 490 /* Interface route. */ 491 if (sdl->sdl_nlen) 492 cp = sdl->sdl_data; 493 else 494 #endif 495 cp = routename(sa, 1); 496 break; 497 } 498 default: 499 { 500 u_char *s = (u_char *)sa->sa_data, *slim; 501 char *cq, *cqlim; 502 503 cq = buf; 504 slim = sa->sa_len + (u_char *) sa; 505 cqlim = cq + sizeof(buf) - 6; 506 cq += sprintf(cq, "(%d)", sa->sa_family); 507 while (s < slim && cq < cqlim) { 508 cq += sprintf(cq, " %02x", *s++); 509 if (s < slim) 510 cq += sprintf(cq, "%02x", *s++); 511 } 512 cp = buf; 513 } 514 } 515 516 return (cp); 517 } 518 519 static void 520 p_flags(int f, const char *format) 521 { 522 struct bits *p; 523 524 xo_emit(format, fmt_flags(f)); 525 526 xo_open_list("flags_pretty"); 527 for (p = bits; p->b_mask; p++) 528 if (p->b_mask & f) 529 xo_emit("{le:flags_pretty/%s}", p->b_name); 530 xo_close_list("flags_pretty"); 531 } 532 533 static const char * 534 fmt_flags(int f) 535 { 536 static char name[33]; 537 char *flags; 538 struct bits *p = bits; 539 540 for (flags = name; p->b_mask; p++) 541 if (p->b_mask & f) 542 *flags++ = p->b_val; 543 *flags = '\0'; 544 return (name); 545 } 546 547 char * 548 routename(struct sockaddr *sa, int flags) 549 { 550 static char line[NI_MAXHOST]; 551 int error, f; 552 553 f = (flags) ? NI_NUMERICHOST : 0; 554 error = getnameinfo(sa, sa->sa_len, line, sizeof(line), 555 NULL, 0, f); 556 if (error) { 557 const void *src; 558 switch (sa->sa_family) { 559 #ifdef INET 560 case AF_INET: 561 src = &satosin(sa)->sin_addr; 562 break; 563 #endif /* INET */ 564 #ifdef INET6 565 case AF_INET6: 566 src = &satosin6(sa)->sin6_addr; 567 break; 568 #endif /* INET6 */ 569 default: 570 return(line); 571 } 572 inet_ntop(sa->sa_family, src, line, sizeof(line) - 1); 573 return (line); 574 } 575 trimdomain(line, strlen(line)); 576 577 return (line); 578 } 579 580 #define NSHIFT(m) ( \ 581 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 582 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 583 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 584 0) 585 586 static void 587 domask(char *dst, in_addr_t addr __unused, u_long mask) 588 { 589 int b, i; 590 591 if (mask == 0) { 592 *dst = '\0'; 593 return; 594 } 595 i = 0; 596 for (b = 0; b < 32; b++) 597 if (mask & (1 << b)) { 598 int bb; 599 600 i = b; 601 for (bb = b+1; bb < 32; bb++) 602 if (!(mask & (1 << bb))) { 603 i = -1; /* noncontig */ 604 break; 605 } 606 break; 607 } 608 if (i == -1) 609 sprintf(dst, "&0x%lx", mask); 610 else 611 sprintf(dst, "/%d", 32-i); 612 } 613 614 /* 615 * Return the name of the network whose address is given. 616 */ 617 const char * 618 netname(struct sockaddr *sa, struct sockaddr *mask) 619 { 620 switch (sa->sa_family) { 621 case AF_INET: 622 if (mask != NULL) 623 return (netname4(satosin(sa)->sin_addr.s_addr, 624 satosin(mask)->sin_addr.s_addr)); 625 else 626 return (netname4(satosin(sa)->sin_addr.s_addr, 627 INADDR_ANY)); 628 break; 629 #ifdef INET6 630 case AF_INET6: 631 return (netname6(satosin6(sa), satosin6(mask))); 632 #endif /* INET6 */ 633 default: 634 return (NULL); 635 } 636 } 637 638 static const char * 639 netname4(in_addr_t in, in_addr_t mask) 640 { 641 char *cp = 0; 642 static char line[MAXHOSTNAMELEN + sizeof("/xx")]; 643 char nline[INET_ADDRSTRLEN]; 644 struct netent *np = 0; 645 in_addr_t i; 646 647 if (in == INADDR_ANY && mask == 0) { 648 strlcpy(line, "default", sizeof(line)); 649 return (line); 650 } 651 652 /* It is ok to supply host address. */ 653 in &= mask; 654 655 i = ntohl(in); 656 if (!numeric_addr && i) { 657 np = getnetbyaddr(i >> NSHIFT(ntohl(mask)), AF_INET); 658 if (np != NULL) { 659 cp = np->n_name; 660 trimdomain(cp, strlen(cp)); 661 } 662 } 663 if (cp != NULL) 664 strlcpy(line, cp, sizeof(line)); 665 else { 666 inet_ntop(AF_INET, &in, nline, sizeof(nline)); 667 strlcpy(line, nline, sizeof(line)); 668 domask(line + strlen(line), i, ntohl(mask)); 669 } 670 671 return (line); 672 } 673 674 #undef NSHIFT 675 676 #ifdef INET6 677 void 678 in6_fillscopeid(struct sockaddr_in6 *sa6) 679 { 680 #if defined(__KAME__) 681 /* 682 * XXX: This is a special workaround for KAME kernels. 683 * sin6_scope_id field of SA should be set in the future. 684 */ 685 if (IN6_IS_ADDR_LINKLOCAL(&sa6->sin6_addr) || 686 IN6_IS_ADDR_MC_NODELOCAL(&sa6->sin6_addr) || 687 IN6_IS_ADDR_MC_LINKLOCAL(&sa6->sin6_addr)) { 688 if (sa6->sin6_scope_id == 0) 689 sa6->sin6_scope_id = 690 ntohs(*(u_int16_t *)&sa6->sin6_addr.s6_addr[2]); 691 sa6->sin6_addr.s6_addr[2] = sa6->sin6_addr.s6_addr[3] = 0; 692 } 693 #endif 694 } 695 696 /* Mask to length table. To check an invalid value, (length + 1) is used. */ 697 static int masktolen[256] = { 698 [0xff] = 8 + 1, 699 [0xfe] = 7 + 1, 700 [0xfc] = 6 + 1, 701 [0xf8] = 5 + 1, 702 [0xf0] = 4 + 1, 703 [0xe0] = 3 + 1, 704 [0xc0] = 2 + 1, 705 [0x80] = 1 + 1, 706 [0x00] = 0 + 1, 707 }; 708 709 static const char * 710 netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask) 711 { 712 static char line[NI_MAXHOST + sizeof("/xxx") - 1]; 713 struct sockaddr_in6 addr; 714 char nline[NI_MAXHOST]; 715 u_char *p, *lim; 716 int masklen, illegal = 0, i; 717 718 if (mask) { 719 p = (u_char *)&mask->sin6_addr; 720 for (masklen = 0, lim = p + 16; p < lim; p++) { 721 if (masktolen[*p] > 0) 722 /* -1 is required. */ 723 masklen += masktolen[*p] - 1; 724 else 725 illegal++; 726 } 727 if (illegal) 728 xo_error("illegal prefixlen\n"); 729 730 memcpy(&addr, sa6, sizeof(addr)); 731 for (i = 0; i < 16; ++i) 732 addr.sin6_addr.s6_addr[i] &= 733 mask->sin6_addr.s6_addr[i]; 734 sa6 = &addr; 735 } 736 else 737 masklen = 128; 738 739 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 740 return("default"); 741 742 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, nline, sizeof(nline), 743 NULL, 0, NI_NUMERICHOST); 744 if (numeric_addr) 745 strlcpy(line, nline, sizeof(line)); 746 else 747 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, 748 sizeof(line), NULL, 0, 0); 749 if (numeric_addr || strcmp(line, nline) == 0) 750 sprintf(&line[strlen(line)], "/%d", masklen); 751 752 return (line); 753 } 754 #endif /*INET6*/ 755 756 /* 757 * Print routing statistics 758 */ 759 void 760 rt_stats(void) 761 { 762 struct rtstat rtstat; 763 #ifndef FSTACK 764 u_long rtsaddr, rttaddr; 765 int rttrash; 766 767 if ((rtsaddr = nl[N_RTSTAT].n_value) == 0) { 768 xo_emit("{W:rtstat: symbol not in namelist}\n"); 769 return; 770 } 771 if ((rttaddr = nl[N_RTTRASH].n_value) == 0) { 772 xo_emit("{W:rttrash: symbol not in namelist}\n"); 773 return; 774 } 775 kread(rtsaddr, (char *)&rtstat, sizeof (rtstat)); 776 kread(rttaddr, (char *)&rttrash, sizeof (rttrash)); 777 #else 778 if (fetch_stats("net.rtstat", 0, &rtstat, 779 sizeof(rtstat), kread_counters) != 0) 780 return; 781 #endif 782 xo_emit("{T:routing}:\n"); 783 784 #define p(f, m) if (rtstat.f || sflag <= 1) \ 785 xo_emit(m, rtstat.f, plural(rtstat.f)) 786 787 p(rts_badredirect, "\t{:bad-redirects/%hu} " 788 "{N:/bad routing redirect%s}\n"); 789 p(rts_dynamic, "\t{:dynamically-created/%hu} " 790 "{N:/dynamically created route%s}\n"); 791 p(rts_newgateway, "\t{:new-gateways/%hu} " 792 "{N:/new gateway%s due to redirects}\n"); 793 p(rts_unreach, "\t{:unreachable-destination/%hu} " 794 "{N:/destination%s found unreachable}\n"); 795 p(rts_wildcard, "\t{:wildcard-uses/%hu} " 796 "{N:/use%s of a wildcard route}\n"); 797 #undef p 798 799 #ifndef FSTACK 800 if (rttrash || sflag <= 1) 801 xo_emit("\t{:unused-but-not-freed/%u} " 802 "{N:/route%s not in table but not freed}\n", 803 rttrash, plural(rttrash)); 804 #endif 805 806 } 807