route.c revision 263657
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 32static 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: stable/10/usr.bin/netstat/route.c 263657 2014-03-23 06:05:58Z glebius $"); 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 <netipx/ipx.h> 56#include <netatalk/at.h> 57#include <netgraph/ng_socket.h> 58 59#include <sys/sysctl.h> 60 61#include <arpa/inet.h> 62#include <ifaddrs.h> 63#include <libutil.h> 64#include <netdb.h> 65#include <nlist.h> 66#include <stdint.h> 67#include <stdio.h> 68#include <stdlib.h> 69#include <string.h> 70#include <sysexits.h> 71#include <unistd.h> 72#include <err.h> 73#include "netstat.h" 74 75#define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d))) 76 77/* 78 * Definitions for showing gateway flags. 79 */ 80struct bits { 81 u_long b_mask; 82 char b_val; 83} bits[] = { 84 { RTF_UP, 'U' }, 85 { RTF_GATEWAY, 'G' }, 86 { RTF_HOST, 'H' }, 87 { RTF_REJECT, 'R' }, 88 { RTF_DYNAMIC, 'D' }, 89 { RTF_MODIFIED, 'M' }, 90 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 91 { RTF_XRESOLVE, 'X' }, 92 { RTF_STATIC, 'S' }, 93 { RTF_PROTO1, '1' }, 94 { RTF_PROTO2, '2' }, 95 { RTF_PRCLONING,'c' }, 96 { RTF_PROTO3, '3' }, 97 { RTF_BLACKHOLE,'B' }, 98 { RTF_BROADCAST,'b' }, 99#ifdef RTF_LLINFO 100 { RTF_LLINFO, 'L' }, 101#endif 102#ifdef RTF_WASCLONED 103 { RTF_WASCLONED,'W' }, 104#endif 105#ifdef RTF_CLONING 106 { RTF_CLONING, 'C' }, 107#endif 108 { 0 , 0 } 109}; 110 111/* 112 * kvm(3) bindings for every needed symbol 113 */ 114static struct nlist rl[] = { 115#define N_RTSTAT 0 116 { .n_name = "_rtstat" }, 117#define N_RTREE 1 118 { .n_name = "_rt_tables"}, 119#define N_RTTRASH 2 120 { .n_name = "_rttrash" }, 121 { .n_name = NULL }, 122}; 123 124typedef union { 125 long dummy; /* Helps align structure. */ 126 struct sockaddr u_sa; 127 u_short u_data[128]; 128} sa_u; 129 130static sa_u pt_u; 131 132struct ifmap_entry { 133 char ifname[IFNAMSIZ]; 134}; 135 136static struct ifmap_entry *ifmap; 137static int ifmap_size; 138 139int do_rtent = 0; 140struct rtentry rtentry; 141struct radix_node rnode; 142struct radix_mask rmask; 143 144int NewTree = 1; 145 146struct timespec uptime; 147 148static struct sockaddr *kgetsa(struct sockaddr *); 149static void size_cols(int ef, struct radix_node *rn); 150static void size_cols_tree(struct radix_node *rn); 151static void size_cols_rtentry(struct rtentry *rt); 152static void p_rtnode_kvm(void); 153static void p_rtable_sysctl(int, int); 154static void p_rtable_kvm(int, int ); 155static void p_rtree_kvm(struct radix_node *); 156static void p_rtentry_sysctl(struct rt_msghdr *); 157static void p_sockaddr(struct sockaddr *, struct sockaddr *, int, int); 158static const char *fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, 159 int flags); 160static void p_flags(int, const char *); 161static const char *fmt_flags(int f); 162static void p_rtentry_kvm(struct rtentry *); 163static void domask(char *, in_addr_t, u_long); 164 165/* 166 * Print routing tables. 167 */ 168void 169routepr(int fibnum, int af) 170{ 171 size_t intsize; 172 int numfibs; 173 174 intsize = sizeof(int); 175 if (fibnum == -1 && 176 sysctlbyname("net.my_fibnum", &fibnum, &intsize, NULL, 0) == -1) 177 fibnum = 0; 178 if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1) 179 numfibs = 1; 180 if (fibnum < 0 || fibnum > numfibs - 1) 181 errx(EX_USAGE, "%d: invalid fib", fibnum); 182 /* 183 * Since kernel & userland use different timebase 184 * (time_uptime vs time_second) and we are reading kernel memory 185 * directly we should do rt_expire --> expire_time conversion. 186 */ 187 if (clock_gettime(CLOCK_UPTIME, &uptime) < 0) 188 err(EX_OSERR, "clock_gettime() failed"); 189 190 printf("Routing tables"); 191 if (fibnum) 192 printf(" (fib: %d)", fibnum); 193 printf("\n"); 194 195 if (Aflag == 0 && live != 0 && NewTree) 196 p_rtable_sysctl(fibnum, af); 197 else 198 p_rtable_kvm(fibnum, af); 199} 200 201 202/* 203 * Print address family header before a section of the routing table. 204 */ 205void 206pr_family(int af1) 207{ 208 const char *afname; 209 210 switch (af1) { 211 case AF_INET: 212 afname = "Internet"; 213 break; 214#ifdef INET6 215 case AF_INET6: 216 afname = "Internet6"; 217 break; 218#endif /*INET6*/ 219 case AF_IPX: 220 afname = "IPX"; 221 break; 222 case AF_ISO: 223 afname = "ISO"; 224 break; 225 case AF_APPLETALK: 226 afname = "AppleTalk"; 227 break; 228 case AF_CCITT: 229 afname = "X.25"; 230 break; 231 case AF_NETGRAPH: 232 afname = "Netgraph"; 233 break; 234 default: 235 afname = NULL; 236 break; 237 } 238 if (afname) 239 printf("\n%s:\n", afname); 240 else 241 printf("\nProtocol Family %d:\n", af1); 242} 243 244/* column widths; each followed by one space */ 245#ifndef INET6 246#define WID_DST_DEFAULT(af) 18 /* width of destination column */ 247#define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 248#define WID_IF_DEFAULT(af) (Wflag ? 8 : 6) /* width of netif column */ 249#else 250#define WID_DST_DEFAULT(af) \ 251 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 252#define WID_GW_DEFAULT(af) \ 253 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 254#define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 8 : 6)) 255#endif /*INET6*/ 256 257static int wid_dst; 258static int wid_gw; 259static int wid_flags; 260static int wid_pksent; 261static int wid_mtu; 262static int wid_if; 263static int wid_expire; 264 265static void 266size_cols(int ef, struct radix_node *rn) 267{ 268 wid_dst = WID_DST_DEFAULT(ef); 269 wid_gw = WID_GW_DEFAULT(ef); 270 wid_flags = 6; 271 wid_pksent = 8; 272 wid_mtu = 6; 273 wid_if = WID_IF_DEFAULT(ef); 274 wid_expire = 6; 275 276 if (Wflag && rn != NULL) 277 size_cols_tree(rn); 278} 279 280static void 281size_cols_tree(struct radix_node *rn) 282{ 283again: 284 if (kget(rn, rnode) != 0) 285 return; 286 if (!(rnode.rn_flags & RNF_ACTIVE)) 287 return; 288 if (rnode.rn_bit < 0) { 289 if ((rnode.rn_flags & RNF_ROOT) == 0) { 290 if (kget(rn, rtentry) != 0) 291 return; 292 size_cols_rtentry(&rtentry); 293 } 294 if ((rn = rnode.rn_dupedkey)) 295 goto again; 296 } else { 297 rn = rnode.rn_right; 298 size_cols_tree(rnode.rn_left); 299 size_cols_tree(rn); 300 } 301} 302 303static void 304size_cols_rtentry(struct rtentry *rt) 305{ 306 static struct ifnet ifnet, *lastif; 307 static char buffer[100]; 308 const char *bp; 309 struct sockaddr *sa; 310 sa_u addr, mask; 311 int len; 312 313 bzero(&addr, sizeof(addr)); 314 if ((sa = kgetsa(rt_key(rt)))) 315 bcopy(sa, &addr, sa->sa_len); 316 bzero(&mask, sizeof(mask)); 317 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 318 bcopy(sa, &mask, sa->sa_len); 319 bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags); 320 len = strlen(bp); 321 wid_dst = MAX(len, wid_dst); 322 323 bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST); 324 len = strlen(bp); 325 wid_gw = MAX(len, wid_gw); 326 327 bp = fmt_flags(rt->rt_flags); 328 len = strlen(bp); 329 wid_flags = MAX(len, wid_flags); 330 331 if (Wflag) { 332 len = snprintf(buffer, sizeof(buffer), "%ju", 333 (uintmax_t )kread_counter((u_long )rt->rt_pksent)); 334 wid_pksent = MAX(len, wid_pksent); 335 } 336 if (rt->rt_ifp) { 337 if (rt->rt_ifp != lastif) { 338 if (kget(rt->rt_ifp, ifnet) == 0) 339 len = strlen(ifnet.if_xname); 340 else 341 len = strlen("---"); 342 lastif = rt->rt_ifp; 343 wid_if = MAX(len, wid_if); 344 } 345 if (rt->rt_expire) { 346 time_t expire_time; 347 348 if ((expire_time = 349 rt->rt_expire - uptime.tv_sec) > 0) { 350 len = snprintf(buffer, sizeof(buffer), "%d", 351 (int)expire_time); 352 wid_expire = MAX(len, wid_expire); 353 } 354 } 355 } 356} 357 358 359/* 360 * Print header for routing table columns. 361 */ 362void 363pr_rthdr(int af1) 364{ 365 366 if (Aflag) 367 printf("%-8.8s ","Address"); 368 if (Wflag) { 369 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*s\n", 370 wid_dst, wid_dst, "Destination", 371 wid_gw, wid_gw, "Gateway", 372 wid_flags, wid_flags, "Flags", 373 wid_pksent, wid_pksent, "Use", 374 wid_mtu, wid_mtu, "Mtu", 375 wid_if, wid_if, "Netif", 376 wid_expire, "Expire"); 377 } else { 378 printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n", 379 wid_dst, wid_dst, "Destination", 380 wid_gw, wid_gw, "Gateway", 381 wid_flags, wid_flags, "Flags", 382 wid_if, wid_if, "Netif", 383 wid_expire, "Expire"); 384 } 385} 386 387static struct sockaddr * 388kgetsa(struct sockaddr *dst) 389{ 390 391 if (kget(dst, pt_u.u_sa) != 0) 392 return (NULL); 393 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 394 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 395 return (&pt_u.u_sa); 396} 397 398/* 399 * Print kernel routing tables for given fib 400 * using debugging kvm(3) interface. 401 */ 402static void 403p_rtable_kvm(int fibnum, int af) 404{ 405 struct radix_node_head **rnhp, *rnh, head; 406 struct radix_node_head **rt_tables; 407 u_long rtree; 408 int fam, af_size; 409 410 kresolve_list(rl); 411 if ((rtree = rl[N_RTREE].n_value) == 0) { 412 printf("rt_tables: symbol not in namelist\n"); 413 return; 414 } 415 416 af_size = (AF_MAX + 1) * sizeof(struct radix_node_head *); 417 rt_tables = calloc(1, af_size); 418 if (rt_tables == NULL) 419 err(EX_OSERR, "memory allocation failed"); 420 421 if (kread((u_long)(rtree), (char *)(rt_tables) + fibnum * af_size, 422 af_size) != 0) 423 err(EX_OSERR, "error retrieving radix pointers"); 424 for (fam = 0; fam <= AF_MAX; fam++) { 425 int tmpfib; 426 427 switch (fam) { 428 case AF_INET6: 429 case AF_INET: 430 tmpfib = fibnum; 431 break; 432 default: 433 tmpfib = 0; 434 } 435 rnhp = (struct radix_node_head **)*rt_tables; 436 /* Calculate the in-kernel address. */ 437 rnhp += tmpfib * (AF_MAX + 1) + fam; 438 /* Read the in kernel rhn pointer. */ 439 if (kget(rnhp, rnh) != 0) 440 continue; 441 if (rnh == NULL) 442 continue; 443 /* Read the rnh data. */ 444 if (kget(rnh, head) != 0) 445 continue; 446 if (fam == AF_UNSPEC) { 447 if (Aflag && af == 0) { 448 printf("Netmasks:\n"); 449 p_rtree_kvm(head.rnh_treetop); 450 } 451 } else if (af == AF_UNSPEC || af == fam) { 452 size_cols(fam, head.rnh_treetop); 453 pr_family(fam); 454 do_rtent = 1; 455 pr_rthdr(fam); 456 p_rtree_kvm(head.rnh_treetop); 457 } 458 } 459 460 free(rt_tables); 461} 462 463/* 464 * Print given kernel radix tree using 465 * debugging kvm(3) interface. 466 */ 467static void 468p_rtree_kvm(struct radix_node *rn) 469{ 470 471again: 472 if (kget(rn, rnode) != 0) 473 return; 474 if (!(rnode.rn_flags & RNF_ACTIVE)) 475 return; 476 if (rnode.rn_bit < 0) { 477 if (Aflag) 478 printf("%-8.8lx ", (u_long)rn); 479 if (rnode.rn_flags & RNF_ROOT) { 480 if (Aflag) 481 printf("(root node)%s", 482 rnode.rn_dupedkey ? " =>\n" : "\n"); 483 } else if (do_rtent) { 484 if (kget(rn, rtentry) == 0) { 485 p_rtentry_kvm(&rtentry); 486 if (Aflag) 487 p_rtnode_kvm(); 488 } 489 } else { 490 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 491 NULL, 0, 44); 492 putchar('\n'); 493 } 494 if ((rn = rnode.rn_dupedkey)) 495 goto again; 496 } else { 497 if (Aflag && do_rtent) { 498 printf("%-8.8lx ", (u_long)rn); 499 p_rtnode_kvm(); 500 } 501 rn = rnode.rn_right; 502 p_rtree_kvm(rnode.rn_left); 503 p_rtree_kvm(rn); 504 } 505} 506 507char nbuf[20]; 508 509static void 510p_rtnode_kvm(void) 511{ 512 struct radix_mask *rm = rnode.rn_mklist; 513 514 if (rnode.rn_bit < 0) { 515 if (rnode.rn_mask) { 516 printf("\t mask "); 517 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 518 NULL, 0, -1); 519 } else if (rm == 0) 520 return; 521 } else { 522 sprintf(nbuf, "(%d)", rnode.rn_bit); 523 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right); 524 } 525 while (rm) { 526 if (kget(rm, rmask) != 0) 527 break; 528 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 529 printf(" mk = %8.8lx {(%d),%s", 530 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 531 if (rmask.rm_flags & RNF_NORMAL) { 532 struct radix_node rnode_aux; 533 printf(" <normal>, "); 534 if (kget(rmask.rm_leaf, rnode_aux) == 0) 535 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 536 NULL, 0, -1); 537 else 538 p_sockaddr(NULL, NULL, 0, -1); 539 } else 540 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 541 NULL, 0, -1); 542 putchar('}'); 543 if ((rm = rmask.rm_mklist)) 544 printf(" ->"); 545 } 546 putchar('\n'); 547} 548 549static void 550p_rtable_sysctl(int fibnum, int af) 551{ 552 size_t needed; 553 int mib[7]; 554 char *buf, *next, *lim; 555 struct rt_msghdr *rtm; 556 struct sockaddr *sa; 557 int fam = 0, ifindex = 0, size; 558 559 struct ifaddrs *ifap, *ifa; 560 struct sockaddr_dl *sdl; 561 562 /* 563 * Retrieve interface list at first 564 * since we need #ifindex -> if_xname match 565 */ 566 if (getifaddrs(&ifap) != 0) 567 err(EX_OSERR, "getifaddrs"); 568 569 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 570 571 if (ifa->ifa_addr->sa_family != AF_LINK) 572 continue; 573 574 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 575 ifindex = sdl->sdl_index; 576 577 if (ifindex >= ifmap_size) { 578 size = roundup(ifindex + 1, 32) * 579 sizeof(struct ifmap_entry); 580 if ((ifmap = realloc(ifmap, size)) == NULL) 581 errx(2, "realloc(%d) failed", size); 582 memset(&ifmap[ifmap_size], 0, 583 size - ifmap_size * 584 sizeof(struct ifmap_entry)); 585 586 ifmap_size = roundup(ifindex + 1, 32); 587 } 588 589 if (*ifmap[ifindex].ifname != '\0') 590 continue; 591 592 strlcpy(ifmap[ifindex].ifname, ifa->ifa_name, IFNAMSIZ); 593 } 594 595 freeifaddrs(ifap); 596 597 mib[0] = CTL_NET; 598 mib[1] = PF_ROUTE; 599 mib[2] = 0; 600 mib[3] = af; 601 mib[4] = NET_RT_DUMP; 602 mib[5] = 0; 603 mib[6] = fibnum; 604 if (sysctl(mib, 7, NULL, &needed, NULL, 0) < 0) { 605 err(1, "sysctl: net.route.0.%d.dump.%d estimate", af, fibnum); 606 } 607 608 if ((buf = malloc(needed)) == 0) { 609 errx(2, "malloc(%lu)", (unsigned long)needed); 610 } 611 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 612 err(1, "sysctl: net.route.0.%d.dump.%d", af, fibnum); 613 } 614 lim = buf + needed; 615 for (next = buf; next < lim; next += rtm->rtm_msglen) { 616 rtm = (struct rt_msghdr *)next; 617 /* 618 * Peek inside header to determine AF 619 */ 620 sa = (struct sockaddr *)(rtm + 1); 621 if (fam != sa->sa_family) { 622 fam = sa->sa_family; 623 size_cols(fam, NULL); 624 pr_family(fam); 625 pr_rthdr(fam); 626 } 627 p_rtentry_sysctl(rtm); 628 } 629} 630 631static void 632p_rtentry_sysctl(struct rt_msghdr *rtm) 633{ 634 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 635 char buffer[128]; 636 char prettyname[128]; 637 sa_u addr, mask, gw; 638 unsigned int l; 639 640#define GETSA(_s, _f) { \ 641 bzero(&(_s), sizeof(_s)); \ 642 if (rtm->rtm_addrs & _f) { \ 643 l = roundup(sa->sa_len, sizeof(long)); \ 644 memcpy(&(_s), sa, (l > sizeof(_s)) ? sizeof(_s) : l); \ 645 sa = (struct sockaddr *)((char *)sa + l); \ 646 } \ 647} 648 649 GETSA(addr, RTA_DST); 650 GETSA(gw, RTA_GATEWAY); 651 GETSA(mask, RTA_NETMASK); 652 p_sockaddr(&addr.u_sa, &mask.u_sa, rtm->rtm_flags, wid_dst); 653 p_sockaddr(&gw.u_sa, NULL, RTF_HOST, wid_gw); 654 655 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 656 p_flags(rtm->rtm_flags, buffer); 657 if (Wflag) { 658 printf("%*lu ", wid_pksent, rtm->rtm_rmx.rmx_pksent); 659 660 if (rtm->rtm_rmx.rmx_mtu != 0) 661 printf("%*lu ", wid_mtu, rtm->rtm_rmx.rmx_mtu); 662 else 663 printf("%*s ", wid_mtu, ""); 664 } 665 666 memset(prettyname, 0, sizeof(prettyname)); 667 if (rtm->rtm_index < ifmap_size) { 668 strlcpy(prettyname, ifmap[rtm->rtm_index].ifname, 669 sizeof(prettyname)); 670 if (*prettyname == '\0') 671 strlcpy(prettyname, "---", sizeof(prettyname)); 672 } 673 674 printf("%*.*s", wid_if, wid_if, prettyname); 675 if (rtm->rtm_rmx.rmx_expire) { 676 time_t expire_time; 677 678 if ((expire_time = 679 rtm->rtm_rmx.rmx_expire - uptime.tv_sec) > 0) 680 printf(" %*d", wid_expire, (int)expire_time); 681 } 682 683 putchar('\n'); 684} 685 686static void 687p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 688{ 689 const char *cp; 690 691 cp = fmt_sockaddr(sa, mask, flags); 692 693 if (width < 0 ) 694 printf("%s ", cp); 695 else { 696 if (numeric_addr) 697 printf("%-*s ", width, cp); 698 else 699 printf("%-*.*s ", width, width, cp); 700 } 701} 702 703static const char * 704fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 705{ 706 static char workbuf[128]; 707 const char *cp; 708 709 if (sa == NULL) 710 return ("null"); 711 712 switch(sa->sa_family) { 713 case AF_INET: 714 { 715 struct sockaddr_in *sockin = (struct sockaddr_in *)sa; 716 717 if ((sockin->sin_addr.s_addr == INADDR_ANY) && 718 mask && 719 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 720 ==0L) 721 cp = "default" ; 722 else if (flags & RTF_HOST) 723 cp = routename(sockin->sin_addr.s_addr); 724 else if (mask) 725 cp = netname(sockin->sin_addr.s_addr, 726 ((struct sockaddr_in *)mask)->sin_addr.s_addr); 727 else 728 cp = netname(sockin->sin_addr.s_addr, INADDR_ANY); 729 break; 730 } 731 732#ifdef INET6 733 case AF_INET6: 734 { 735 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 736 737 /* 738 * The sa6->sin6_scope_id must be filled here because 739 * this sockaddr is extracted from kmem(4) directly 740 * and has KAME-specific embedded scope id in 741 * sa6->sin6_addr.s6_addr[2]. 742 */ 743 in6_fillscopeid(sa6); 744 745 if (flags & RTF_HOST) 746 cp = routename6(sa6); 747 else if (mask) 748 cp = netname6(sa6, 749 &((struct sockaddr_in6 *)mask)->sin6_addr); 750 else { 751 cp = netname6(sa6, NULL); 752 } 753 break; 754 } 755#endif /*INET6*/ 756 757 case AF_IPX: 758 { 759 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 760 if (ipx_nullnet(satoipx_addr(work))) 761 cp = "default"; 762 else 763 cp = ipx_print(sa); 764 break; 765 } 766 case AF_APPLETALK: 767 { 768 if (!(flags & RTF_HOST) && mask) 769 cp = atalk_print2(sa,mask,9); 770 else 771 cp = atalk_print(sa,11); 772 break; 773 } 774 case AF_NETGRAPH: 775 { 776 strlcpy(workbuf, ((struct sockaddr_ng *)sa)->sg_data, 777 sizeof(workbuf)); 778 cp = workbuf; 779 break; 780 } 781 782 case AF_LINK: 783 { 784 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 785 786 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 787 sdl->sdl_slen == 0) { 788 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 789 cp = workbuf; 790 } else 791 switch (sdl->sdl_type) { 792 793 case IFT_ETHER: 794 case IFT_L2VLAN: 795 case IFT_BRIDGE: 796 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 797 cp = ether_ntoa((struct ether_addr *) 798 (sdl->sdl_data + sdl->sdl_nlen)); 799 break; 800 } 801 /* FALLTHROUGH */ 802 default: 803 cp = link_ntoa(sdl); 804 break; 805 } 806 break; 807 } 808 809 default: 810 { 811 u_char *s = (u_char *)sa->sa_data, *slim; 812 char *cq, *cqlim; 813 814 cq = workbuf; 815 slim = sa->sa_len + (u_char *) sa; 816 cqlim = cq + sizeof(workbuf) - 6; 817 cq += sprintf(cq, "(%d)", sa->sa_family); 818 while (s < slim && cq < cqlim) { 819 cq += sprintf(cq, " %02x", *s++); 820 if (s < slim) 821 cq += sprintf(cq, "%02x", *s++); 822 } 823 cp = workbuf; 824 } 825 } 826 827 return (cp); 828} 829 830static void 831p_flags(int f, const char *format) 832{ 833 printf(format, fmt_flags(f)); 834} 835 836static const char * 837fmt_flags(int f) 838{ 839 static char name[33]; 840 char *flags; 841 struct bits *p = bits; 842 843 for (flags = name; p->b_mask; p++) 844 if (p->b_mask & f) 845 *flags++ = p->b_val; 846 *flags = '\0'; 847 return (name); 848} 849 850static void 851p_rtentry_kvm(struct rtentry *rt) 852{ 853 static struct ifnet ifnet, *lastif; 854 static char buffer[128]; 855 static char prettyname[128]; 856 struct sockaddr *sa; 857 sa_u addr, mask; 858 859 bzero(&addr, sizeof(addr)); 860 if ((sa = kgetsa(rt_key(rt)))) 861 bcopy(sa, &addr, sa->sa_len); 862 bzero(&mask, sizeof(mask)); 863 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 864 bcopy(sa, &mask, sa->sa_len); 865 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst); 866 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); 867 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 868 p_flags(rt->rt_flags, buffer); 869 if (Wflag) { 870 printf("%*ju ", wid_pksent, 871 (uintmax_t )kread_counter((u_long )rt->rt_pksent)); 872 873 if (rt->rt_mtu != 0) 874 printf("%*lu ", wid_mtu, rt->rt_mtu); 875 else 876 printf("%*s ", wid_mtu, ""); 877 } 878 if (rt->rt_ifp) { 879 if (rt->rt_ifp != lastif) { 880 if (kget(rt->rt_ifp, ifnet) == 0) 881 strlcpy(prettyname, ifnet.if_xname, 882 sizeof(prettyname)); 883 else 884 strlcpy(prettyname, "---", sizeof(prettyname)); 885 lastif = rt->rt_ifp; 886 } 887 printf("%*.*s", wid_if, wid_if, prettyname); 888 if (rt->rt_expire) { 889 time_t expire_time; 890 891 if ((expire_time = 892 rt->rt_expire - uptime.tv_sec) > 0) 893 printf(" %*d", wid_expire, (int)expire_time); 894 } 895 if (rt->rt_nodes[0].rn_dupedkey) 896 printf(" =>"); 897 } 898 putchar('\n'); 899} 900 901char * 902routename(in_addr_t in) 903{ 904 char *cp; 905 static char line[MAXHOSTNAMELEN]; 906 struct hostent *hp; 907 908 cp = 0; 909 if (!numeric_addr) { 910 hp = gethostbyaddr(&in, sizeof (struct in_addr), AF_INET); 911 if (hp) { 912 cp = hp->h_name; 913 trimdomain(cp, strlen(cp)); 914 } 915 } 916 if (cp) { 917 strlcpy(line, cp, sizeof(line)); 918 } else { 919#define C(x) ((x) & 0xff) 920 in = ntohl(in); 921 sprintf(line, "%u.%u.%u.%u", 922 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 923 } 924 return (line); 925} 926 927#define NSHIFT(m) ( \ 928 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 929 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 930 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 931 0) 932 933static void 934domask(char *dst, in_addr_t addr __unused, u_long mask) 935{ 936 int b, i; 937 938 if (mask == 0 || (!numeric_addr && NSHIFT(mask) != 0)) { 939 *dst = '\0'; 940 return; 941 } 942 i = 0; 943 for (b = 0; b < 32; b++) 944 if (mask & (1 << b)) { 945 int bb; 946 947 i = b; 948 for (bb = b+1; bb < 32; bb++) 949 if (!(mask & (1 << bb))) { 950 i = -1; /* noncontig */ 951 break; 952 } 953 break; 954 } 955 if (i == -1) 956 sprintf(dst, "&0x%lx", mask); 957 else 958 sprintf(dst, "/%d", 32-i); 959} 960 961/* 962 * Return the name of the network whose address is given. 963 */ 964char * 965netname(in_addr_t in, in_addr_t mask) 966{ 967 char *cp = 0; 968 static char line[MAXHOSTNAMELEN]; 969 struct netent *np = 0; 970 in_addr_t i; 971 972 /* It is ok to supply host address. */ 973 in &= mask; 974 975 i = ntohl(in); 976 if (!numeric_addr && i) { 977 np = getnetbyaddr(i >> NSHIFT(ntohl(mask)), AF_INET); 978 if (np != NULL) { 979 cp = np->n_name; 980 trimdomain(cp, strlen(cp)); 981 } 982 } 983 if (cp != NULL) { 984 strlcpy(line, cp, sizeof(line)); 985 } else { 986 inet_ntop(AF_INET, &in, line, sizeof(line) - 1); 987 } 988 domask(line + strlen(line), i, ntohl(mask)); 989 return (line); 990} 991 992#undef NSHIFT 993 994#ifdef INET6 995void 996in6_fillscopeid(struct sockaddr_in6 *sa6) 997{ 998#if defined(__KAME__) 999 /* 1000 * XXX: This is a special workaround for KAME kernels. 1001 * sin6_scope_id field of SA should be set in the future. 1002 */ 1003 if (IN6_IS_ADDR_LINKLOCAL(&sa6->sin6_addr) || 1004 IN6_IS_ADDR_MC_NODELOCAL(&sa6->sin6_addr) || 1005 IN6_IS_ADDR_MC_LINKLOCAL(&sa6->sin6_addr)) { 1006 /* XXX: override is ok? */ 1007 sa6->sin6_scope_id = 1008 ntohs(*(u_int16_t *)&sa6->sin6_addr.s6_addr[2]); 1009 sa6->sin6_addr.s6_addr[2] = sa6->sin6_addr.s6_addr[3] = 0; 1010 } 1011#endif 1012} 1013 1014const char * 1015netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 1016{ 1017 static char line[MAXHOSTNAMELEN]; 1018 u_char *p = (u_char *)mask; 1019 u_char *lim; 1020 int masklen, illegal = 0, flag = 0; 1021 1022 if (mask) { 1023 for (masklen = 0, lim = p + 16; p < lim; p++) { 1024 switch (*p) { 1025 case 0xff: 1026 masklen += 8; 1027 break; 1028 case 0xfe: 1029 masklen += 7; 1030 break; 1031 case 0xfc: 1032 masklen += 6; 1033 break; 1034 case 0xf8: 1035 masklen += 5; 1036 break; 1037 case 0xf0: 1038 masklen += 4; 1039 break; 1040 case 0xe0: 1041 masklen += 3; 1042 break; 1043 case 0xc0: 1044 masklen += 2; 1045 break; 1046 case 0x80: 1047 masklen += 1; 1048 break; 1049 case 0x00: 1050 break; 1051 default: 1052 illegal ++; 1053 break; 1054 } 1055 } 1056 if (illegal) 1057 fprintf(stderr, "illegal prefixlen\n"); 1058 } 1059 else 1060 masklen = 128; 1061 1062 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 1063 return("default"); 1064 1065 if (numeric_addr) 1066 flag |= NI_NUMERICHOST; 1067 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 1068 NULL, 0, flag); 1069 1070 if (numeric_addr) 1071 sprintf(&line[strlen(line)], "/%d", masklen); 1072 1073 return line; 1074} 1075 1076char * 1077routename6(struct sockaddr_in6 *sa6) 1078{ 1079 static char line[MAXHOSTNAMELEN]; 1080 int flag = 0; 1081 /* use local variable for safety */ 1082 struct sockaddr_in6 sa6_local; 1083 1084 sa6_local.sin6_family = AF_INET6; 1085 sa6_local.sin6_len = sizeof(sa6_local); 1086 sa6_local.sin6_addr = sa6->sin6_addr; 1087 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 1088 1089 if (numeric_addr) 1090 flag |= NI_NUMERICHOST; 1091 1092 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 1093 line, sizeof(line), NULL, 0, flag); 1094 1095 return line; 1096} 1097#endif /*INET6*/ 1098 1099/* 1100 * Print routing statistics 1101 */ 1102void 1103rt_stats(void) 1104{ 1105 struct rtstat rtstat; 1106 u_long rtsaddr, rttaddr; 1107 int rttrash; 1108 1109 kresolve_list(rl); 1110 1111 if ((rtsaddr = rl[N_RTSTAT].n_value) == 0) { 1112 printf("rtstat: symbol not in namelist\n"); 1113 return; 1114 } 1115 if ((rttaddr = rl[N_RTTRASH].n_value) == 0) { 1116 printf("rttrash: symbol not in namelist\n"); 1117 return; 1118 } 1119 kread(rtsaddr, (char *)&rtstat, sizeof (rtstat)); 1120 kread(rttaddr, (char *)&rttrash, sizeof (rttrash)); 1121 printf("routing:\n"); 1122 1123#define p(f, m) if (rtstat.f || sflag <= 1) \ 1124 printf(m, rtstat.f, plural(rtstat.f)) 1125 1126 p(rts_badredirect, "\t%hu bad routing redirect%s\n"); 1127 p(rts_dynamic, "\t%hu dynamically created route%s\n"); 1128 p(rts_newgateway, "\t%hu new gateway%s due to redirects\n"); 1129 p(rts_unreach, "\t%hu destination%s found unreachable\n"); 1130 p(rts_wildcard, "\t%hu use%s of a wildcard route\n"); 1131#undef p 1132 1133 if (rttrash || sflag <= 1) 1134 printf("\t%u route%s not in table but not freed\n", 1135 rttrash, plural(rttrash)); 1136} 1137 1138char * 1139ipx_print(struct sockaddr *sa) 1140{ 1141 u_short port; 1142 struct servent *sp = 0; 1143 const char *net = "", *host = ""; 1144 char *p; 1145 u_char *q; 1146 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 1147 static char mybuf[50]; 1148 char cport[10], chost[15], cnet[15]; 1149 1150 port = ntohs(work.x_port); 1151 1152 if (ipx_nullnet(work) && ipx_nullhost(work)) { 1153 1154 if (port) { 1155 if (sp) 1156 sprintf(mybuf, "*.%s", sp->s_name); 1157 else 1158 sprintf(mybuf, "*.%x", port); 1159 } else 1160 sprintf(mybuf, "*.*"); 1161 1162 return (mybuf); 1163 } 1164 1165 if (ipx_wildnet(work)) 1166 net = "any"; 1167 else if (ipx_nullnet(work)) 1168 net = "*"; 1169 else { 1170 q = work.x_net.c_net; 1171 sprintf(cnet, "%02x%02x%02x%02x", 1172 q[0], q[1], q[2], q[3]); 1173 for (p = cnet; *p == '0' && p < cnet + 8; p++) 1174 continue; 1175 net = p; 1176 } 1177 1178 if (ipx_wildhost(work)) 1179 host = "any"; 1180 else if (ipx_nullhost(work)) 1181 host = "*"; 1182 else { 1183 q = work.x_host.c_host; 1184 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 1185 q[0], q[1], q[2], q[3], q[4], q[5]); 1186 for (p = chost; *p == '0' && p < chost + 12; p++) 1187 continue; 1188 host = p; 1189 } 1190 1191 if (port) { 1192 if (strcmp(host, "*") == 0) 1193 host = ""; 1194 if (sp) 1195 snprintf(cport, sizeof(cport), 1196 "%s%s", *host ? "." : "", sp->s_name); 1197 else 1198 snprintf(cport, sizeof(cport), 1199 "%s%x", *host ? "." : "", port); 1200 } else 1201 *cport = 0; 1202 1203 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 1204 return(mybuf); 1205} 1206 1207char * 1208ipx_phost(struct sockaddr *sa) 1209{ 1210 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 1211 struct sockaddr_ipx work; 1212 static union ipx_net ipx_zeronet; 1213 char *p; 1214 1215 work = *sipx; 1216 1217 work.sipx_addr.x_port = 0; 1218 work.sipx_addr.x_net = ipx_zeronet; 1219 p = ipx_print((struct sockaddr *)&work); 1220 if (strncmp("*.", p, 2) == 0) p += 2; 1221 1222 return(p); 1223} 1224 1225void 1226upHex(char *p0) 1227{ 1228 char *p = p0; 1229 1230 for (; *p; p++) 1231 switch (*p) { 1232 1233 case 'a': 1234 case 'b': 1235 case 'c': 1236 case 'd': 1237 case 'e': 1238 case 'f': 1239 *p += ('A' - 'a'); 1240 break; 1241 } 1242} 1243