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 /* 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 struct ifmap_entry { 100 char ifname[IFNAMSIZ]; 101 }; 102 static struct ifmap_entry *ifmap; 103 static int ifmap_size; 104 static struct timespec uptime; 105 106 static const char *netname4(in_addr_t, in_addr_t); 107 static const char *netname6(struct sockaddr_in6 *, struct sockaddr_in6 *); 108 static void p_rtable_sysctl(int, int); 109 static void p_rtentry_sysctl(const char *name, struct rt_msghdr *); 110 static int p_sockaddr(const char *name, struct sockaddr *, struct sockaddr *, 111 int, int); 112 static const char *fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, 113 int flags); 114 static void p_flags(int, const char *); 115 static const char *fmt_flags(int f); 116 static void domask(char *, in_addr_t, u_long); 117 118 119 /* 120 * Print routing tables. 121 */ 122 void 123 routepr(int fibnum, int af) 124 { 125 size_t intsize; 126 int numfibs; 127 128 if (live == 0) 129 return; 130 131 intsize = sizeof(int); 132 if (fibnum == -1 && 133 sysctlbyname("net.my_fibnum", &fibnum, &intsize, NULL, 0) == -1) 134 fibnum = 0; 135 if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1) 136 numfibs = 1; 137 if (fibnum < 0 || fibnum > numfibs - 1) 138 errx(EX_USAGE, "%d: invalid fib", fibnum); 139 /* 140 * Since kernel & userland use different timebase 141 * (time_uptime vs time_second) and we are reading kernel memory 142 * directly we should do rt_expire --> expire_time conversion. 143 */ 144 if (clock_gettime(CLOCK_UPTIME, &uptime) < 0) 145 err(EX_OSERR, "clock_gettime() failed"); 146 147 xo_open_container("route-information"); 148 xo_emit("{T:Routing tables}"); 149 if (fibnum) 150 xo_emit(" ({L:fib}: {:fib/%d})", fibnum); 151 xo_emit("\n"); 152 p_rtable_sysctl(fibnum, af); 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 static int wid_dst; 207 static int wid_gw; 208 static int wid_flags; 209 static int wid_pksent; 210 static int wid_mtu; 211 static int wid_if; 212 static int wid_expire; 213 214 /* 215 * Print header for routing table columns. 216 */ 217 static void 218 pr_rthdr(int af1 __unused) 219 { 220 221 if (Wflag) { 222 xo_emit("{T:/%-*.*s} {T:/%-*.*s} {T:/%-*.*s} {T:/%*.*s} " 223 "{T:/%*.*s} {T:/%*.*s} {T:/%*s}\n", 224 wid_dst, wid_dst, "Destination", 225 wid_gw, wid_gw, "Gateway", 226 wid_flags, wid_flags, "Flags", 227 wid_pksent, wid_pksent, "Use", 228 wid_mtu, wid_mtu, "Mtu", 229 wid_if, wid_if, "Netif", 230 wid_expire, "Expire"); 231 } else { 232 xo_emit("{T:/%-*.*s} {T:/%-*.*s} {T:/%-*.*s} {T:/%*.*s} " 233 "{T:/%*s}\n", 234 wid_dst, wid_dst, "Destination", 235 wid_gw, wid_gw, "Gateway", 236 wid_flags, wid_flags, "Flags", 237 wid_if, wid_if, "Netif", 238 wid_expire, "Expire"); 239 } 240 } 241 242 static void 243 p_rtable_sysctl(int fibnum, int af) 244 { 245 size_t needed; 246 int mib[7]; 247 char *buf, *next, *lim; 248 struct rt_msghdr *rtm; 249 struct sockaddr *sa; 250 int fam = AF_UNSPEC, ifindex = 0, size; 251 int need_table_close = false; 252 253 struct ifaddrs *ifap, *ifa; 254 struct sockaddr_dl *sdl; 255 256 /* 257 * Retrieve interface list at first 258 * since we need #ifindex -> if_xname match 259 */ 260 if (getifaddrs(&ifap) != 0) 261 err(EX_OSERR, "getifaddrs"); 262 263 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 264 265 if (ifa->ifa_addr->sa_family != AF_LINK) 266 continue; 267 268 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 269 ifindex = sdl->sdl_index; 270 271 if (ifindex >= ifmap_size) { 272 size = roundup(ifindex + 1, 32) * 273 sizeof(struct ifmap_entry); 274 if ((ifmap = realloc(ifmap, size)) == NULL) 275 errx(2, "realloc(%d) failed", size); 276 memset(&ifmap[ifmap_size], 0, 277 size - ifmap_size * 278 sizeof(struct ifmap_entry)); 279 280 ifmap_size = roundup(ifindex + 1, 32); 281 } 282 283 if (*ifmap[ifindex].ifname != '\0') 284 continue; 285 286 strlcpy(ifmap[ifindex].ifname, ifa->ifa_name, IFNAMSIZ); 287 } 288 289 freeifaddrs(ifap); 290 291 mib[0] = CTL_NET; 292 mib[1] = PF_ROUTE; 293 mib[2] = 0; 294 mib[3] = af; 295 mib[4] = NET_RT_DUMP; 296 mib[5] = 0; 297 mib[6] = fibnum; 298 if (sysctl(mib, nitems(mib), NULL, &needed, NULL, 0) < 0) 299 err(EX_OSERR, "sysctl: net.route.0.%d.dump.%d estimate", af, 300 fibnum); 301 if ((buf = malloc(needed)) == NULL) 302 errx(2, "malloc(%lu)", (unsigned long)needed); 303 if (sysctl(mib, nitems(mib), buf, &needed, NULL, 0) < 0) 304 err(1, "sysctl: net.route.0.%d.dump.%d", af, fibnum); 305 lim = buf + needed; 306 xo_open_container("route-table"); 307 xo_open_list("rt-family"); 308 for (next = buf; next < lim; next += rtm->rtm_msglen) { 309 rtm = (struct rt_msghdr *)next; 310 if (rtm->rtm_version != RTM_VERSION) 311 continue; 312 /* 313 * Peek inside header to determine AF 314 */ 315 sa = (struct sockaddr *)(rtm + 1); 316 /* Only print family first time. */ 317 if (fam != sa->sa_family) { 318 if (need_table_close) { 319 xo_close_list("rt-entry"); 320 xo_close_instance("rt-family"); 321 } 322 need_table_close = true; 323 324 fam = sa->sa_family; 325 wid_dst = WID_DST_DEFAULT(fam); 326 wid_gw = WID_GW_DEFAULT(fam); 327 wid_flags = 6; 328 wid_pksent = 8; 329 wid_mtu = 6; 330 wid_if = WID_IF_DEFAULT(fam); 331 wid_expire = 6; 332 xo_open_instance("rt-family"); 333 pr_family(fam); 334 xo_open_list("rt-entry"); 335 336 pr_rthdr(fam); 337 } 338 p_rtentry_sysctl("rt-entry", rtm); 339 } 340 if (need_table_close) { 341 xo_close_list("rt-entry"); 342 xo_close_instance("rt-family"); 343 } 344 xo_close_list("rt-family"); 345 xo_close_container("route-table"); 346 free(buf); 347 } 348 349 static void 350 p_rtentry_sysctl(const char *name, struct rt_msghdr *rtm) 351 { 352 struct sockaddr *sa, *addr[RTAX_MAX]; 353 char buffer[128]; 354 char prettyname[128]; 355 int i, protrusion; 356 357 xo_open_instance(name); 358 sa = (struct sockaddr *)(rtm + 1); 359 for (i = 0; i < RTAX_MAX; i++) { 360 if (rtm->rtm_addrs & (1 << i)) 361 addr[i] = sa; 362 sa = (struct sockaddr *)((char *)sa + SA_SIZE(sa)); 363 } 364 365 protrusion = p_sockaddr("destination", addr[RTAX_DST], 366 addr[RTAX_NETMASK], 367 rtm->rtm_flags, wid_dst); 368 protrusion = p_sockaddr("gateway", addr[RTAX_GATEWAY], NULL, RTF_HOST, 369 wid_gw - protrusion); 370 snprintf(buffer, sizeof(buffer), "{[:-%d}{:flags/%%s}{]:} ", 371 wid_flags - protrusion); 372 p_flags(rtm->rtm_flags, buffer); 373 if (Wflag) { 374 xo_emit("{t:use/%*lu} ", wid_pksent, rtm->rtm_rmx.rmx_pksent); 375 376 if (rtm->rtm_rmx.rmx_mtu != 0) 377 xo_emit("{t:mtu/%*lu} ", wid_mtu, rtm->rtm_rmx.rmx_mtu); 378 else 379 xo_emit("{P:/%*s} ", wid_mtu, ""); 380 } 381 382 memset(prettyname, 0, sizeof(prettyname)); 383 if (rtm->rtm_index < ifmap_size) { 384 strlcpy(prettyname, ifmap[rtm->rtm_index].ifname, 385 sizeof(prettyname)); 386 if (*prettyname == '\0') 387 strlcpy(prettyname, "---", sizeof(prettyname)); 388 } 389 390 if (Wflag) 391 xo_emit("{t:interface-name/%*s}", wid_if, prettyname); 392 else 393 xo_emit("{t:interface-name/%*.*s}", wid_if, wid_if, 394 prettyname); 395 if (rtm->rtm_rmx.rmx_expire) { 396 time_t expire_time; 397 398 if ((expire_time = rtm->rtm_rmx.rmx_expire - uptime.tv_sec) > 0) 399 xo_emit(" {:expire-time/%*d}", wid_expire, 400 (int)expire_time); 401 } 402 403 xo_emit("\n"); 404 xo_close_instance(name); 405 } 406 407 static int 408 p_sockaddr(const char *name, struct sockaddr *sa, struct sockaddr *mask, 409 int flags, int width) 410 { 411 const char *cp; 412 char buf[128]; 413 int protrusion; 414 415 cp = fmt_sockaddr(sa, mask, flags); 416 417 if (width < 0) { 418 snprintf(buf, sizeof(buf), "{:%s/%%s} ", name); 419 xo_emit(buf, cp); 420 } else { 421 if (Wflag != 0 || numeric_addr) { 422 snprintf(buf, sizeof(buf), "{[:%d}{:%s/%%s}{]:} ", 423 -width, name); 424 xo_emit(buf, cp); 425 protrusion = strlen(cp) - width; 426 if (protrusion < 0) 427 protrusion = 0; 428 } else { 429 snprintf(buf, sizeof(buf), "{[:%d}{:%s/%%-.*s}{]:} ", 430 -width, name); 431 xo_emit(buf, width, cp); 432 protrusion = 0; 433 } 434 } 435 return (protrusion); 436 } 437 438 static const char * 439 fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 440 { 441 static char buf[128]; 442 const char *cp; 443 444 if (sa == NULL) 445 return ("null"); 446 447 switch(sa->sa_family) { 448 #ifdef INET6 449 case AF_INET6: 450 /* 451 * The sa6->sin6_scope_id must be filled here because 452 * this sockaddr is extracted from kmem(4) directly 453 * and has KAME-specific embedded scope id in 454 * sa6->sin6_addr.s6_addr[2]. 455 */ 456 in6_fillscopeid(satosin6(sa)); 457 /* FALLTHROUGH */ 458 #endif /*INET6*/ 459 case AF_INET: 460 if (flags & RTF_HOST) 461 cp = routename(sa, numeric_addr); 462 else if (mask) 463 cp = netname(sa, mask); 464 else 465 cp = netname(sa, NULL); 466 break; 467 case AF_NETGRAPH: 468 { 469 strlcpy(buf, ((struct sockaddr_ng *)sa)->sg_data, 470 sizeof(buf)); 471 cp = buf; 472 break; 473 } 474 case AF_LINK: 475 { 476 #if 0 477 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 478 479 /* Interface route. */ 480 if (sdl->sdl_nlen) 481 cp = sdl->sdl_data; 482 else 483 #endif 484 cp = routename(sa, 1); 485 break; 486 } 487 default: 488 { 489 u_char *s = (u_char *)sa->sa_data, *slim; 490 char *cq, *cqlim; 491 492 cq = buf; 493 slim = sa->sa_len + (u_char *) sa; 494 cqlim = cq + sizeof(buf) - 6; 495 cq += sprintf(cq, "(%d)", sa->sa_family); 496 while (s < slim && cq < cqlim) { 497 cq += sprintf(cq, " %02x", *s++); 498 if (s < slim) 499 cq += sprintf(cq, "%02x", *s++); 500 } 501 cp = buf; 502 } 503 } 504 505 return (cp); 506 } 507 508 static void 509 p_flags(int f, const char *format) 510 { 511 struct bits *p; 512 513 xo_emit(format, fmt_flags(f)); 514 515 xo_open_list("flags_pretty"); 516 for (p = bits; p->b_mask; p++) 517 if (p->b_mask & f) 518 xo_emit("{le:flags_pretty/%s}", p->b_name); 519 xo_close_list("flags_pretty"); 520 } 521 522 static const char * 523 fmt_flags(int f) 524 { 525 static char name[33]; 526 char *flags; 527 struct bits *p = bits; 528 529 for (flags = name; p->b_mask; p++) 530 if (p->b_mask & f) 531 *flags++ = p->b_val; 532 *flags = '\0'; 533 return (name); 534 } 535 536 char * 537 routename(struct sockaddr *sa, int flags) 538 { 539 static char line[NI_MAXHOST]; 540 int error, f; 541 542 f = (flags) ? NI_NUMERICHOST : 0; 543 error = getnameinfo(sa, sa->sa_len, line, sizeof(line), 544 NULL, 0, f); 545 if (error) { 546 const void *src; 547 switch (sa->sa_family) { 548 #ifdef INET 549 case AF_INET: 550 src = &satosin(sa)->sin_addr; 551 break; 552 #endif /* INET */ 553 #ifdef INET6 554 case AF_INET6: 555 src = &satosin6(sa)->sin6_addr; 556 break; 557 #endif /* INET6 */ 558 default: 559 return(line); 560 } 561 inet_ntop(sa->sa_family, src, line, sizeof(line) - 1); 562 return (line); 563 } 564 trimdomain(line, strlen(line)); 565 566 return (line); 567 } 568 569 #define NSHIFT(m) ( \ 570 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 571 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 572 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 573 0) 574 575 static void 576 domask(char *dst, in_addr_t addr __unused, u_long mask) 577 { 578 int b, i; 579 580 if (mask == 0) { 581 *dst = '\0'; 582 return; 583 } 584 i = 0; 585 for (b = 0; b < 32; b++) 586 if (mask & (1 << b)) { 587 int bb; 588 589 i = b; 590 for (bb = b+1; bb < 32; bb++) 591 if (!(mask & (1 << bb))) { 592 i = -1; /* noncontig */ 593 break; 594 } 595 break; 596 } 597 if (i == -1) 598 sprintf(dst, "&0x%lx", mask); 599 else 600 sprintf(dst, "/%d", 32-i); 601 } 602 603 /* 604 * Return the name of the network whose address is given. 605 */ 606 const char * 607 netname(struct sockaddr *sa, struct sockaddr *mask) 608 { 609 switch (sa->sa_family) { 610 case AF_INET: 611 if (mask != NULL) 612 return (netname4(satosin(sa)->sin_addr.s_addr, 613 satosin(mask)->sin_addr.s_addr)); 614 else 615 return (netname4(satosin(sa)->sin_addr.s_addr, 616 INADDR_ANY)); 617 break; 618 #ifdef INET6 619 case AF_INET6: 620 return (netname6(satosin6(sa), satosin6(mask))); 621 #endif /* INET6 */ 622 default: 623 return (NULL); 624 } 625 } 626 627 static const char * 628 netname4(in_addr_t in, in_addr_t mask) 629 { 630 char *cp = 0; 631 static char line[MAXHOSTNAMELEN + sizeof("/xx")]; 632 char nline[INET_ADDRSTRLEN]; 633 struct netent *np = 0; 634 in_addr_t i; 635 636 if (in == INADDR_ANY && mask == 0) { 637 strlcpy(line, "default", sizeof(line)); 638 return (line); 639 } 640 641 /* It is ok to supply host address. */ 642 in &= mask; 643 644 i = ntohl(in); 645 if (!numeric_addr && i) { 646 np = getnetbyaddr(i >> NSHIFT(ntohl(mask)), AF_INET); 647 if (np != NULL) { 648 cp = np->n_name; 649 trimdomain(cp, strlen(cp)); 650 } 651 } 652 if (cp != NULL) 653 strlcpy(line, cp, sizeof(line)); 654 else { 655 inet_ntop(AF_INET, &in, nline, sizeof(nline)); 656 strlcpy(line, nline, sizeof(line)); 657 domask(line + strlen(line), i, ntohl(mask)); 658 } 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 struct sockaddr_in6 addr; 703 char nline[NI_MAXHOST]; 704 u_char *p, *lim; 705 int masklen, illegal = 0, i; 706 707 if (mask) { 708 p = (u_char *)&mask->sin6_addr; 709 for (masklen = 0, lim = p + 16; p < lim; p++) { 710 if (masktolen[*p] > 0) 711 /* -1 is required. */ 712 masklen += masktolen[*p] - 1; 713 else 714 illegal++; 715 } 716 if (illegal) 717 xo_error("illegal prefixlen\n"); 718 719 memcpy(&addr, sa6, sizeof(addr)); 720 for (i = 0; i < 16; ++i) 721 addr.sin6_addr.s6_addr[i] &= 722 mask->sin6_addr.s6_addr[i]; 723 sa6 = &addr; 724 } 725 else 726 masklen = 128; 727 728 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 729 return("default"); 730 731 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, nline, sizeof(nline), 732 NULL, 0, NI_NUMERICHOST); 733 if (numeric_addr) 734 strlcpy(line, nline, sizeof(line)); 735 else 736 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, 737 sizeof(line), NULL, 0, 0); 738 if (numeric_addr || strcmp(line, nline) == 0) 739 sprintf(&line[strlen(line)], "/%d", masklen); 740 741 return (line); 742 } 743 #endif /*INET6*/ 744 745 /* 746 * Print routing statistics 747 */ 748 void 749 rt_stats(void) 750 { 751 struct rtstat rtstat; 752 u_long rtsaddr, rttaddr; 753 int rttrash; 754 755 if ((rtsaddr = nl[N_RTSTAT].n_value) == 0) { 756 xo_emit("{W:rtstat: symbol not in namelist}\n"); 757 return; 758 } 759 if ((rttaddr = nl[N_RTTRASH].n_value) == 0) { 760 xo_emit("{W:rttrash: symbol not in namelist}\n"); 761 return; 762 } 763 kread(rtsaddr, (char *)&rtstat, sizeof (rtstat)); 764 kread(rttaddr, (char *)&rttrash, sizeof (rttrash)); 765 xo_emit("{T:routing}:\n"); 766 767 #define p(f, m) if (rtstat.f || sflag <= 1) \ 768 xo_emit(m, rtstat.f, plural(rtstat.f)) 769 770 p(rts_badredirect, "\t{:bad-redirects/%hu} " 771 "{N:/bad routing redirect%s}\n"); 772 p(rts_dynamic, "\t{:dynamically-created/%hu} " 773 "{N:/dynamically created route%s}\n"); 774 p(rts_newgateway, "\t{:new-gateways/%hu} " 775 "{N:/new gateway%s due to redirects}\n"); 776 p(rts_unreach, "\t{:unreachable-destination/%hu} " 777 "{N:/destination%s found unreachable}\n"); 778 p(rts_wildcard, "\t{:wildcard-uses/%hu} " 779 "{N:/use%s of a wildcard route}\n"); 780 #undef p 781 782 if (rttrash || sflag <= 1) 783 xo_emit("\t{:unused-but-not-freed/%u} " 784 "{N:/route%s not in table but not freed}\n", 785 rttrash, plural(rttrash)); 786 } 787