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/time.h> 44 45 #include <net/ethernet.h> 46 #include <net/if.h> 47 #include <net/if_var.h> 48 #include <net/if_dl.h> 49 #include <net/if_types.h> 50 #include <net/radix.h> 51 #define _WANT_RTENTRY 52 #include <net/route.h> 53 54 #include <netinet/in.h> 55 #include <netatalk/at.h> 56 #include <netgraph/ng_socket.h> 57 58 #include <sys/sysctl.h> 59 60 #include <arpa/inet.h> 61 #include <ifaddrs.h> 62 #include <libutil.h> 63 #include <netdb.h> 64 #include <nlist.h> 65 #include <stdint.h> 66 #include <stdio.h> 67 #include <stdlib.h> 68 #include <string.h> 69 #include <sysexits.h> 70 #include <unistd.h> 71 #include <err.h> 72 #include "netstat.h" 73 74 #define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d))) 75 76 /* 77 * Definitions for showing gateway flags. 78 */ 79 struct bits { 80 u_long b_mask; 81 char b_val; 82 } bits[] = { 83 { RTF_UP, 'U' }, 84 { RTF_GATEWAY, 'G' }, 85 { RTF_HOST, 'H' }, 86 { RTF_REJECT, 'R' }, 87 { RTF_DYNAMIC, 'D' }, 88 { RTF_MODIFIED, 'M' }, 89 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 90 { RTF_XRESOLVE, 'X' }, 91 { RTF_STATIC, 'S' }, 92 { RTF_PROTO1, '1' }, 93 { RTF_PROTO2, '2' }, 94 { RTF_PRCLONING,'c' }, 95 { RTF_PROTO3, '3' }, 96 { RTF_BLACKHOLE,'B' }, 97 { RTF_BROADCAST,'b' }, 98 #ifdef RTF_LLINFO 99 { RTF_LLINFO, 'L' }, 100 #endif 101 #ifdef RTF_WASCLONED 102 { RTF_WASCLONED,'W' }, 103 #endif 104 #ifdef RTF_CLONING 105 { RTF_CLONING, 'C' }, 106 #endif 107 { 0 , 0 } 108 }; 109 110 /* 111 * kvm(3) bindings for every needed symbol 112 */ 113 static struct nlist rl[] = { 114 #define N_RTSTAT 0 115 { .n_name = "_rtstat" }, 116 #define N_RTREE 1 117 { .n_name = "_rt_tables"}, 118 #define N_RTTRASH 2 119 { .n_name = "_rttrash" }, 120 { .n_name = NULL }, 121 }; 122 123 typedef union { 124 long dummy; /* Helps align structure. */ 125 struct sockaddr u_sa; 126 u_short u_data[128]; 127 } sa_u; 128 129 static sa_u pt_u; 130 131 struct ifmap_entry { 132 char ifname[IFNAMSIZ]; 133 }; 134 135 static struct ifmap_entry *ifmap; 136 static int ifmap_size; 137 138 int do_rtent = 0; 139 struct rtentry rtentry; 140 struct radix_node rnode; 141 struct radix_mask rmask; 142 143 int NewTree = 1; 144 145 struct timespec uptime; 146 147 static struct sockaddr *kgetsa(struct sockaddr *); 148 static void size_cols(int ef, struct radix_node *rn); 149 static void size_cols_tree(struct radix_node *rn); 150 static void size_cols_rtentry(struct rtentry *rt); 151 static void p_rtnode_kvm(void); 152 static void p_rtable_sysctl(int, int); 153 static void p_rtable_kvm(int, int ); 154 static void p_rtree_kvm(struct radix_node *); 155 static void p_rtentry_sysctl(struct rt_msghdr *); 156 static void p_sockaddr(struct sockaddr *, struct sockaddr *, int, int); 157 static const char *fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, 158 int flags); 159 static void p_flags(int, const char *); 160 static const char *fmt_flags(int f); 161 static void p_rtentry_kvm(struct rtentry *); 162 static void domask(char *, in_addr_t, u_long); 163 164 /* 165 * Print routing tables. 166 */ 167 void 168 routepr(int fibnum, int af) 169 { 170 size_t intsize; 171 int numfibs; 172 173 intsize = sizeof(int); 174 if (fibnum == -1 && 175 sysctlbyname("net.my_fibnum", &fibnum, &intsize, NULL, 0) == -1) 176 fibnum = 0; 177 if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1) 178 numfibs = 1; 179 if (fibnum < 0 || fibnum > numfibs - 1) 180 errx(EX_USAGE, "%d: invalid fib", fibnum); 181 /* 182 * Since kernel & userland use different timebase 183 * (time_uptime vs time_second) and we are reading kernel memory 184 * directly we should do rt_expire --> expire_time conversion. 185 */ 186 if (clock_gettime(CLOCK_UPTIME, &uptime) < 0) 187 err(EX_OSERR, "clock_gettime() failed"); 188 189 printf("Routing tables"); 190 if (fibnum) 191 printf(" (fib: %d)", fibnum); 192 printf("\n"); 193 194 if (Aflag == 0 && live != 0 && NewTree) 195 p_rtable_sysctl(fibnum, af); 196 else 197 p_rtable_kvm(fibnum, af); 198 } 199 200 201 /* 202 * Print address family header before a section of the routing table. 203 */ 204 void 205 pr_family(int af1) 206 { 207 const char *afname; 208 209 switch (af1) { 210 case AF_INET: 211 afname = "Internet"; 212 break; 213 #ifdef INET6 214 case AF_INET6: 215 afname = "Internet6"; 216 break; 217 #endif /*INET6*/ 218 case AF_ISO: 219 afname = "ISO"; 220 break; 221 case AF_APPLETALK: 222 afname = "AppleTalk"; 223 break; 224 case AF_CCITT: 225 afname = "X.25"; 226 break; 227 case AF_NETGRAPH: 228 afname = "Netgraph"; 229 break; 230 default: 231 afname = NULL; 232 break; 233 } 234 if (afname) 235 printf("\n%s:\n", afname); 236 else 237 printf("\nProtocol Family %d:\n", af1); 238 } 239 240 /* column widths; each followed by one space */ 241 #ifndef INET6 242 #define WID_DST_DEFAULT(af) 18 /* width of destination column */ 243 #define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 244 #define WID_IF_DEFAULT(af) (Wflag ? 8 : 6) /* width of netif column */ 245 #else 246 #define WID_DST_DEFAULT(af) \ 247 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 248 #define WID_GW_DEFAULT(af) \ 249 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 250 #define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 8 : 6)) 251 #endif /*INET6*/ 252 253 static int wid_dst; 254 static int wid_gw; 255 static int wid_flags; 256 static int wid_pksent; 257 static int wid_mtu; 258 static int wid_if; 259 static int wid_expire; 260 261 static void 262 size_cols(int ef, struct radix_node *rn) 263 { 264 wid_dst = WID_DST_DEFAULT(ef); 265 wid_gw = WID_GW_DEFAULT(ef); 266 wid_flags = 6; 267 wid_pksent = 8; 268 wid_mtu = 6; 269 wid_if = WID_IF_DEFAULT(ef); 270 wid_expire = 6; 271 272 if (Wflag && rn != NULL) 273 size_cols_tree(rn); 274 } 275 276 static void 277 size_cols_tree(struct radix_node *rn) 278 { 279 again: 280 if (kget(rn, rnode) != 0) 281 return; 282 if (!(rnode.rn_flags & RNF_ACTIVE)) 283 return; 284 if (rnode.rn_bit < 0) { 285 if ((rnode.rn_flags & RNF_ROOT) == 0) { 286 if (kget(rn, rtentry) != 0) 287 return; 288 size_cols_rtentry(&rtentry); 289 } 290 if ((rn = rnode.rn_dupedkey)) 291 goto again; 292 } else { 293 rn = rnode.rn_right; 294 size_cols_tree(rnode.rn_left); 295 size_cols_tree(rn); 296 } 297 } 298 299 static void 300 size_cols_rtentry(struct rtentry *rt) 301 { 302 static struct ifnet ifnet, *lastif; 303 static char buffer[100]; 304 const char *bp; 305 struct sockaddr *sa; 306 sa_u addr, mask; 307 int len; 308 309 bzero(&addr, sizeof(addr)); 310 if ((sa = kgetsa(rt_key(rt)))) 311 bcopy(sa, &addr, sa->sa_len); 312 bzero(&mask, sizeof(mask)); 313 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 314 bcopy(sa, &mask, sa->sa_len); 315 bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags); 316 len = strlen(bp); 317 wid_dst = MAX(len, wid_dst); 318 319 bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST); 320 len = strlen(bp); 321 wid_gw = MAX(len, wid_gw); 322 323 bp = fmt_flags(rt->rt_flags); 324 len = strlen(bp); 325 wid_flags = MAX(len, wid_flags); 326 327 if (Wflag) { 328 len = snprintf(buffer, sizeof(buffer), "%ju", 329 (uintmax_t )kread_counter((u_long )rt->rt_pksent)); 330 wid_pksent = MAX(len, wid_pksent); 331 } 332 if (rt->rt_ifp) { 333 if (rt->rt_ifp != lastif) { 334 if (kget(rt->rt_ifp, ifnet) == 0) 335 len = strlen(ifnet.if_xname); 336 else 337 len = strlen("---"); 338 lastif = rt->rt_ifp; 339 wid_if = MAX(len, wid_if); 340 } 341 if (rt->rt_expire) { 342 time_t expire_time; 343 344 if ((expire_time = 345 rt->rt_expire - uptime.tv_sec) > 0) { 346 len = snprintf(buffer, sizeof(buffer), "%d", 347 (int)expire_time); 348 wid_expire = MAX(len, wid_expire); 349 } 350 } 351 } 352 } 353 354 355 /* 356 * Print header for routing table columns. 357 */ 358 void 359 pr_rthdr(int af1) 360 { 361 362 if (Aflag) 363 printf("%-8.8s ","Address"); 364 if (Wflag) { 365 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*s\n", 366 wid_dst, wid_dst, "Destination", 367 wid_gw, wid_gw, "Gateway", 368 wid_flags, wid_flags, "Flags", 369 wid_pksent, wid_pksent, "Use", 370 wid_mtu, wid_mtu, "Mtu", 371 wid_if, wid_if, "Netif", 372 wid_expire, "Expire"); 373 } else { 374 printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n", 375 wid_dst, wid_dst, "Destination", 376 wid_gw, wid_gw, "Gateway", 377 wid_flags, wid_flags, "Flags", 378 wid_if, wid_if, "Netif", 379 wid_expire, "Expire"); 380 } 381 } 382 383 static struct sockaddr * 384 kgetsa(struct sockaddr *dst) 385 { 386 387 if (kget(dst, pt_u.u_sa) != 0) 388 return (NULL); 389 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 390 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 391 return (&pt_u.u_sa); 392 } 393 394 /* 395 * Print kernel routing tables for given fib 396 * using debugging kvm(3) interface. 397 */ 398 static void 399 p_rtable_kvm(int fibnum, int af) 400 { 401 struct radix_node_head **rnhp, *rnh, head; 402 struct radix_node_head **rt_tables; 403 u_long rtree; 404 int fam, af_size; 405 406 kresolve_list(rl); 407 if ((rtree = rl[N_RTREE].n_value) == 0) { 408 printf("rt_tables: symbol not in namelist\n"); 409 return; 410 } 411 412 af_size = (AF_MAX + 1) * sizeof(struct radix_node_head *); 413 rt_tables = calloc(1, af_size); 414 if (rt_tables == NULL) 415 err(EX_OSERR, "memory allocation failed"); 416 417 if (kread((u_long)(rtree), (char *)(rt_tables) + fibnum * af_size, 418 af_size) != 0) 419 err(EX_OSERR, "error retrieving radix pointers"); 420 for (fam = 0; fam <= AF_MAX; fam++) { 421 int tmpfib; 422 423 switch (fam) { 424 case AF_INET6: 425 case AF_INET: 426 tmpfib = fibnum; 427 break; 428 default: 429 tmpfib = 0; 430 } 431 rnhp = (struct radix_node_head **)*rt_tables; 432 /* Calculate the in-kernel address. */ 433 rnhp += tmpfib * (AF_MAX + 1) + fam; 434 /* Read the in kernel rhn pointer. */ 435 if (kget(rnhp, rnh) != 0) 436 continue; 437 if (rnh == NULL) 438 continue; 439 /* Read the rnh data. */ 440 if (kget(rnh, head) != 0) 441 continue; 442 if (fam == AF_UNSPEC) { 443 if (Aflag && af == 0) { 444 printf("Netmasks:\n"); 445 p_rtree_kvm(head.rnh_treetop); 446 } 447 } else if (af == AF_UNSPEC || af == fam) { 448 size_cols(fam, head.rnh_treetop); 449 pr_family(fam); 450 do_rtent = 1; 451 pr_rthdr(fam); 452 p_rtree_kvm(head.rnh_treetop); 453 } 454 } 455 456 free(rt_tables); 457 } 458 459 /* 460 * Print given kernel radix tree using 461 * debugging kvm(3) interface. 462 */ 463 static void 464 p_rtree_kvm(struct radix_node *rn) 465 { 466 467 again: 468 if (kget(rn, rnode) != 0) 469 return; 470 if (!(rnode.rn_flags & RNF_ACTIVE)) 471 return; 472 if (rnode.rn_bit < 0) { 473 if (Aflag) 474 printf("%-8.8lx ", (u_long)rn); 475 if (rnode.rn_flags & RNF_ROOT) { 476 if (Aflag) 477 printf("(root node)%s", 478 rnode.rn_dupedkey ? " =>\n" : "\n"); 479 } else if (do_rtent) { 480 if (kget(rn, rtentry) == 0) { 481 p_rtentry_kvm(&rtentry); 482 if (Aflag) 483 p_rtnode_kvm(); 484 } 485 } else { 486 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 487 NULL, 0, 44); 488 putchar('\n'); 489 } 490 if ((rn = rnode.rn_dupedkey)) 491 goto again; 492 } else { 493 if (Aflag && do_rtent) { 494 printf("%-8.8lx ", (u_long)rn); 495 p_rtnode_kvm(); 496 } 497 rn = rnode.rn_right; 498 p_rtree_kvm(rnode.rn_left); 499 p_rtree_kvm(rn); 500 } 501 } 502 503 char nbuf[20]; 504 505 static void 506 p_rtnode_kvm(void) 507 { 508 struct radix_mask *rm = rnode.rn_mklist; 509 510 if (rnode.rn_bit < 0) { 511 if (rnode.rn_mask) { 512 printf("\t mask "); 513 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 514 NULL, 0, -1); 515 } else if (rm == 0) 516 return; 517 } else { 518 sprintf(nbuf, "(%d)", rnode.rn_bit); 519 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right); 520 } 521 while (rm) { 522 if (kget(rm, rmask) != 0) 523 break; 524 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 525 printf(" mk = %8.8lx {(%d),%s", 526 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 527 if (rmask.rm_flags & RNF_NORMAL) { 528 struct radix_node rnode_aux; 529 printf(" <normal>, "); 530 if (kget(rmask.rm_leaf, rnode_aux) == 0) 531 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 532 NULL, 0, -1); 533 else 534 p_sockaddr(NULL, NULL, 0, -1); 535 } else 536 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 537 NULL, 0, -1); 538 putchar('}'); 539 if ((rm = rmask.rm_mklist)) 540 printf(" ->"); 541 } 542 putchar('\n'); 543 } 544 545 static void 546 p_rtable_sysctl(int fibnum, int af) 547 { 548 size_t needed; 549 int mib[7]; 550 char *buf, *next, *lim; 551 struct rt_msghdr *rtm; 552 struct sockaddr *sa; 553 int fam = 0, ifindex = 0, size; 554 555 struct ifaddrs *ifap, *ifa; 556 struct sockaddr_dl *sdl; 557 558 /* 559 * Retrieve interface list at first 560 * since we need #ifindex -> if_xname match 561 */ 562 if (getifaddrs(&ifap) != 0) 563 err(EX_OSERR, "getifaddrs"); 564 565 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 566 567 if (ifa->ifa_addr->sa_family != AF_LINK) 568 continue; 569 570 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 571 ifindex = sdl->sdl_index; 572 573 if (ifindex >= ifmap_size) { 574 size = roundup(ifindex + 1, 32) * 575 sizeof(struct ifmap_entry); 576 if ((ifmap = realloc(ifmap, size)) == NULL) 577 errx(2, "realloc(%d) failed", size); 578 memset(&ifmap[ifmap_size], 0, 579 size - ifmap_size * 580 sizeof(struct ifmap_entry)); 581 582 ifmap_size = roundup(ifindex + 1, 32); 583 } 584 585 if (*ifmap[ifindex].ifname != '\0') 586 continue; 587 588 strlcpy(ifmap[ifindex].ifname, ifa->ifa_name, IFNAMSIZ); 589 } 590 591 freeifaddrs(ifap); 592 593 mib[0] = CTL_NET; 594 mib[1] = PF_ROUTE; 595 mib[2] = 0; 596 mib[3] = af; 597 mib[4] = NET_RT_DUMP; 598 mib[5] = 0; 599 mib[6] = fibnum; 600 if (sysctl(mib, 7, NULL, &needed, NULL, 0) < 0) { 601 err(1, "sysctl: net.route.0.%d.dump.%d estimate", af, fibnum); 602 } 603 604 if ((buf = malloc(needed)) == 0) { 605 errx(2, "malloc(%lu)", (unsigned long)needed); 606 } 607 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 608 err(1, "sysctl: net.route.0.%d.dump.%d", af, fibnum); 609 } 610 lim = buf + needed; 611 for (next = buf; next < lim; next += rtm->rtm_msglen) { 612 rtm = (struct rt_msghdr *)next; 613 /* 614 * Peek inside header to determine AF 615 */ 616 sa = (struct sockaddr *)(rtm + 1); 617 if (fam != sa->sa_family) { 618 fam = sa->sa_family; 619 size_cols(fam, NULL); 620 pr_family(fam); 621 pr_rthdr(fam); 622 } 623 p_rtentry_sysctl(rtm); 624 } 625 } 626 627 static void 628 p_rtentry_sysctl(struct rt_msghdr *rtm) 629 { 630 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 631 char buffer[128]; 632 char prettyname[128]; 633 sa_u addr, mask, gw; 634 unsigned int l; 635 636 #define GETSA(_s, _f) { \ 637 bzero(&(_s), sizeof(_s)); \ 638 if (rtm->rtm_addrs & _f) { \ 639 l = roundup(sa->sa_len, sizeof(long)); \ 640 memcpy(&(_s), sa, (l > sizeof(_s)) ? sizeof(_s) : l); \ 641 sa = (struct sockaddr *)((char *)sa + l); \ 642 } \ 643 } 644 645 GETSA(addr, RTA_DST); 646 GETSA(gw, RTA_GATEWAY); 647 GETSA(mask, RTA_NETMASK); 648 p_sockaddr(&addr.u_sa, &mask.u_sa, rtm->rtm_flags, wid_dst); 649 p_sockaddr(&gw.u_sa, NULL, RTF_HOST, wid_gw); 650 651 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 652 p_flags(rtm->rtm_flags, buffer); 653 if (Wflag) { 654 printf("%*lu ", wid_pksent, rtm->rtm_rmx.rmx_pksent); 655 656 if (rtm->rtm_rmx.rmx_mtu != 0) 657 printf("%*lu ", wid_mtu, rtm->rtm_rmx.rmx_mtu); 658 else 659 printf("%*s ", wid_mtu, ""); 660 } 661 662 memset(prettyname, 0, sizeof(prettyname)); 663 if (rtm->rtm_index < ifmap_size) { 664 strlcpy(prettyname, ifmap[rtm->rtm_index].ifname, 665 sizeof(prettyname)); 666 if (*prettyname == '\0') 667 strlcpy(prettyname, "---", sizeof(prettyname)); 668 } 669 670 printf("%*.*s", wid_if, wid_if, prettyname); 671 if (rtm->rtm_rmx.rmx_expire) { 672 time_t expire_time; 673 674 if ((expire_time = 675 rtm->rtm_rmx.rmx_expire - uptime.tv_sec) > 0) 676 printf(" %*d", wid_expire, (int)expire_time); 677 } 678 679 putchar('\n'); 680 } 681 682 static void 683 p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 684 { 685 const char *cp; 686 687 cp = fmt_sockaddr(sa, mask, flags); 688 689 if (width < 0 ) 690 printf("%s ", cp); 691 else { 692 if (numeric_addr) 693 printf("%-*s ", width, cp); 694 else 695 printf("%-*.*s ", width, width, cp); 696 } 697 } 698 699 static const char * 700 fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 701 { 702 static char workbuf[128]; 703 const char *cp; 704 705 if (sa == NULL) 706 return ("null"); 707 708 switch(sa->sa_family) { 709 case AF_INET: 710 { 711 struct sockaddr_in *sockin = (struct sockaddr_in *)sa; 712 713 if ((sockin->sin_addr.s_addr == INADDR_ANY) && 714 mask && 715 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 716 ==0L) 717 cp = "default" ; 718 else if (flags & RTF_HOST) 719 cp = routename(sockin->sin_addr.s_addr); 720 else if (mask) 721 cp = netname(sockin->sin_addr.s_addr, 722 ((struct sockaddr_in *)mask)->sin_addr.s_addr); 723 else 724 cp = netname(sockin->sin_addr.s_addr, INADDR_ANY); 725 break; 726 } 727 728 #ifdef INET6 729 case AF_INET6: 730 { 731 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 732 733 /* 734 * The sa6->sin6_scope_id must be filled here because 735 * this sockaddr is extracted from kmem(4) directly 736 * and has KAME-specific embedded scope id in 737 * sa6->sin6_addr.s6_addr[2]. 738 */ 739 in6_fillscopeid(sa6); 740 741 if (flags & RTF_HOST) 742 cp = routename6(sa6); 743 else if (mask) 744 cp = netname6(sa6, 745 &((struct sockaddr_in6 *)mask)->sin6_addr); 746 else { 747 cp = netname6(sa6, NULL); 748 } 749 break; 750 } 751 #endif /*INET6*/ 752 753 case AF_APPLETALK: 754 { 755 if (!(flags & RTF_HOST) && mask) 756 cp = atalk_print2(sa,mask,9); 757 else 758 cp = atalk_print(sa,11); 759 break; 760 } 761 case AF_NETGRAPH: 762 { 763 strlcpy(workbuf, ((struct sockaddr_ng *)sa)->sg_data, 764 sizeof(workbuf)); 765 cp = workbuf; 766 break; 767 } 768 769 case AF_LINK: 770 { 771 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 772 773 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 774 sdl->sdl_slen == 0) { 775 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 776 cp = workbuf; 777 } else 778 switch (sdl->sdl_type) { 779 780 case IFT_ETHER: 781 case IFT_L2VLAN: 782 case IFT_BRIDGE: 783 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 784 cp = ether_ntoa((struct ether_addr *) 785 (sdl->sdl_data + sdl->sdl_nlen)); 786 break; 787 } 788 /* FALLTHROUGH */ 789 default: 790 cp = link_ntoa(sdl); 791 break; 792 } 793 break; 794 } 795 796 default: 797 { 798 u_char *s = (u_char *)sa->sa_data, *slim; 799 char *cq, *cqlim; 800 801 cq = workbuf; 802 slim = sa->sa_len + (u_char *) sa; 803 cqlim = cq + sizeof(workbuf) - 6; 804 cq += sprintf(cq, "(%d)", sa->sa_family); 805 while (s < slim && cq < cqlim) { 806 cq += sprintf(cq, " %02x", *s++); 807 if (s < slim) 808 cq += sprintf(cq, "%02x", *s++); 809 } 810 cp = workbuf; 811 } 812 } 813 814 return (cp); 815 } 816 817 static void 818 p_flags(int f, const char *format) 819 { 820 printf(format, fmt_flags(f)); 821 } 822 823 static const char * 824 fmt_flags(int f) 825 { 826 static char name[33]; 827 char *flags; 828 struct bits *p = bits; 829 830 for (flags = name; p->b_mask; p++) 831 if (p->b_mask & f) 832 *flags++ = p->b_val; 833 *flags = '\0'; 834 return (name); 835 } 836 837 static void 838 p_rtentry_kvm(struct rtentry *rt) 839 { 840 static struct ifnet ifnet, *lastif; 841 static char buffer[128]; 842 static char prettyname[128]; 843 struct sockaddr *sa; 844 sa_u addr, mask; 845 846 bzero(&addr, sizeof(addr)); 847 if ((sa = kgetsa(rt_key(rt)))) 848 bcopy(sa, &addr, sa->sa_len); 849 bzero(&mask, sizeof(mask)); 850 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 851 bcopy(sa, &mask, sa->sa_len); 852 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst); 853 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); 854 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 855 p_flags(rt->rt_flags, buffer); 856 if (Wflag) { 857 printf("%*ju ", wid_pksent, 858 (uintmax_t )kread_counter((u_long )rt->rt_pksent)); 859 860 if (rt->rt_mtu != 0) 861 printf("%*lu ", wid_mtu, rt->rt_mtu); 862 else 863 printf("%*s ", wid_mtu, ""); 864 } 865 if (rt->rt_ifp) { 866 if (rt->rt_ifp != lastif) { 867 if (kget(rt->rt_ifp, ifnet) == 0) 868 strlcpy(prettyname, ifnet.if_xname, 869 sizeof(prettyname)); 870 else 871 strlcpy(prettyname, "---", sizeof(prettyname)); 872 lastif = rt->rt_ifp; 873 } 874 printf("%*.*s", wid_if, wid_if, prettyname); 875 if (rt->rt_expire) { 876 time_t expire_time; 877 878 if ((expire_time = 879 rt->rt_expire - uptime.tv_sec) > 0) 880 printf(" %*d", wid_expire, (int)expire_time); 881 } 882 if (rt->rt_nodes[0].rn_dupedkey) 883 printf(" =>"); 884 } 885 putchar('\n'); 886 } 887 888 char * 889 routename(in_addr_t in) 890 { 891 char *cp; 892 static char line[MAXHOSTNAMELEN]; 893 struct hostent *hp; 894 895 cp = 0; 896 if (!numeric_addr) { 897 hp = gethostbyaddr(&in, sizeof (struct in_addr), AF_INET); 898 if (hp) { 899 cp = hp->h_name; 900 trimdomain(cp, strlen(cp)); 901 } 902 } 903 if (cp) { 904 strlcpy(line, cp, sizeof(line)); 905 } else { 906 #define C(x) ((x) & 0xff) 907 in = ntohl(in); 908 sprintf(line, "%u.%u.%u.%u", 909 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 910 } 911 return (line); 912 } 913 914 #define NSHIFT(m) ( \ 915 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 916 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 917 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 918 0) 919 920 static void 921 domask(char *dst, in_addr_t addr __unused, u_long mask) 922 { 923 int b, i; 924 925 if (mask == 0 || (!numeric_addr && NSHIFT(mask) != 0)) { 926 *dst = '\0'; 927 return; 928 } 929 i = 0; 930 for (b = 0; b < 32; b++) 931 if (mask & (1 << b)) { 932 int bb; 933 934 i = b; 935 for (bb = b+1; bb < 32; bb++) 936 if (!(mask & (1 << bb))) { 937 i = -1; /* noncontig */ 938 break; 939 } 940 break; 941 } 942 if (i == -1) 943 sprintf(dst, "&0x%lx", mask); 944 else 945 sprintf(dst, "/%d", 32-i); 946 } 947 948 /* 949 * Return the name of the network whose address is given. 950 */ 951 char * 952 netname(in_addr_t in, in_addr_t mask) 953 { 954 char *cp = 0; 955 static char line[MAXHOSTNAMELEN]; 956 struct netent *np = 0; 957 in_addr_t i; 958 959 /* It is ok to supply host address. */ 960 in &= mask; 961 962 i = ntohl(in); 963 if (!numeric_addr && i) { 964 np = getnetbyaddr(i >> NSHIFT(ntohl(mask)), AF_INET); 965 if (np != NULL) { 966 cp = np->n_name; 967 trimdomain(cp, strlen(cp)); 968 } 969 } 970 if (cp != NULL) { 971 strlcpy(line, cp, sizeof(line)); 972 } else { 973 inet_ntop(AF_INET, &in, line, sizeof(line) - 1); 974 } 975 domask(line + strlen(line), i, ntohl(mask)); 976 return (line); 977 } 978 979 #undef NSHIFT 980 981 #ifdef INET6 982 void 983 in6_fillscopeid(struct sockaddr_in6 *sa6) 984 { 985 #if defined(__KAME__) 986 /* 987 * XXX: This is a special workaround for KAME kernels. 988 * sin6_scope_id field of SA should be set in the future. 989 */ 990 if (IN6_IS_ADDR_LINKLOCAL(&sa6->sin6_addr) || 991 IN6_IS_ADDR_MC_NODELOCAL(&sa6->sin6_addr) || 992 IN6_IS_ADDR_MC_LINKLOCAL(&sa6->sin6_addr)) { 993 /* XXX: override is ok? */ 994 sa6->sin6_scope_id = 995 ntohs(*(u_int16_t *)&sa6->sin6_addr.s6_addr[2]); 996 sa6->sin6_addr.s6_addr[2] = sa6->sin6_addr.s6_addr[3] = 0; 997 } 998 #endif 999 } 1000 1001 const char * 1002 netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 1003 { 1004 static char line[MAXHOSTNAMELEN]; 1005 u_char *p = (u_char *)mask; 1006 u_char *lim; 1007 int masklen, illegal = 0, flag = 0; 1008 1009 if (mask) { 1010 for (masklen = 0, lim = p + 16; p < lim; p++) { 1011 switch (*p) { 1012 case 0xff: 1013 masklen += 8; 1014 break; 1015 case 0xfe: 1016 masklen += 7; 1017 break; 1018 case 0xfc: 1019 masklen += 6; 1020 break; 1021 case 0xf8: 1022 masklen += 5; 1023 break; 1024 case 0xf0: 1025 masklen += 4; 1026 break; 1027 case 0xe0: 1028 masklen += 3; 1029 break; 1030 case 0xc0: 1031 masklen += 2; 1032 break; 1033 case 0x80: 1034 masklen += 1; 1035 break; 1036 case 0x00: 1037 break; 1038 default: 1039 illegal ++; 1040 break; 1041 } 1042 } 1043 if (illegal) 1044 fprintf(stderr, "illegal prefixlen\n"); 1045 } 1046 else 1047 masklen = 128; 1048 1049 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 1050 return("default"); 1051 1052 if (numeric_addr) 1053 flag |= NI_NUMERICHOST; 1054 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 1055 NULL, 0, flag); 1056 1057 if (numeric_addr) 1058 sprintf(&line[strlen(line)], "/%d", masklen); 1059 1060 return line; 1061 } 1062 1063 char * 1064 routename6(struct sockaddr_in6 *sa6) 1065 { 1066 static char line[MAXHOSTNAMELEN]; 1067 int flag = 0; 1068 /* use local variable for safety */ 1069 struct sockaddr_in6 sa6_local; 1070 1071 sa6_local.sin6_family = AF_INET6; 1072 sa6_local.sin6_len = sizeof(sa6_local); 1073 sa6_local.sin6_addr = sa6->sin6_addr; 1074 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 1075 1076 if (numeric_addr) 1077 flag |= NI_NUMERICHOST; 1078 1079 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 1080 line, sizeof(line), NULL, 0, flag); 1081 1082 return line; 1083 } 1084 #endif /*INET6*/ 1085 1086 /* 1087 * Print routing statistics 1088 */ 1089 void 1090 rt_stats(void) 1091 { 1092 struct rtstat rtstat; 1093 u_long rtsaddr, rttaddr; 1094 int rttrash; 1095 1096 kresolve_list(rl); 1097 1098 if ((rtsaddr = rl[N_RTSTAT].n_value) == 0) { 1099 printf("rtstat: symbol not in namelist\n"); 1100 return; 1101 } 1102 if ((rttaddr = rl[N_RTTRASH].n_value) == 0) { 1103 printf("rttrash: symbol not in namelist\n"); 1104 return; 1105 } 1106 kread(rtsaddr, (char *)&rtstat, sizeof (rtstat)); 1107 kread(rttaddr, (char *)&rttrash, sizeof (rttrash)); 1108 printf("routing:\n"); 1109 1110 #define p(f, m) if (rtstat.f || sflag <= 1) \ 1111 printf(m, rtstat.f, plural(rtstat.f)) 1112 1113 p(rts_badredirect, "\t%hu bad routing redirect%s\n"); 1114 p(rts_dynamic, "\t%hu dynamically created route%s\n"); 1115 p(rts_newgateway, "\t%hu new gateway%s due to redirects\n"); 1116 p(rts_unreach, "\t%hu destination%s found unreachable\n"); 1117 p(rts_wildcard, "\t%hu use%s of a wildcard route\n"); 1118 #undef p 1119 1120 if (rttrash || sflag <= 1) 1121 printf("\t%u route%s not in table but not freed\n", 1122 rttrash, plural(rttrash)); 1123 } 1124