route.c revision 261207
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 261207 2014-01-27 08:15:21Z 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#include <net/route.h> 52 53#include <netinet/in.h> 54#include <netipx/ipx.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 <libutil.h> 62#include <netdb.h> 63#include <stdint.h> 64#include <stdio.h> 65#include <stdlib.h> 66#include <string.h> 67#include <sysexits.h> 68#include <unistd.h> 69#include <err.h> 70#include "netstat.h" 71 72#define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d))) 73 74/* 75 * Definitions for showing gateway flags. 76 */ 77struct bits { 78 u_long b_mask; 79 char b_val; 80} bits[] = { 81 { RTF_UP, 'U' }, 82 { RTF_GATEWAY, 'G' }, 83 { RTF_HOST, 'H' }, 84 { RTF_REJECT, 'R' }, 85 { RTF_DYNAMIC, 'D' }, 86 { RTF_MODIFIED, 'M' }, 87 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 88 { RTF_XRESOLVE, 'X' }, 89 { RTF_STATIC, 'S' }, 90 { RTF_PROTO1, '1' }, 91 { RTF_PROTO2, '2' }, 92 { RTF_PRCLONING,'c' }, 93 { RTF_PROTO3, '3' }, 94 { RTF_BLACKHOLE,'B' }, 95 { RTF_BROADCAST,'b' }, 96#ifdef RTF_LLINFO 97 { RTF_LLINFO, 'L' }, 98#endif 99#ifdef RTF_WASCLONED 100 { RTF_WASCLONED,'W' }, 101#endif 102#ifdef RTF_CLONING 103 { RTF_CLONING, 'C' }, 104#endif 105 { 0 , 0 } 106}; 107 108typedef union { 109 long dummy; /* Helps align structure. */ 110 struct sockaddr u_sa; 111 u_short u_data[128]; 112} sa_u; 113 114static sa_u pt_u; 115 116int do_rtent = 0; 117struct rtentry rtentry; 118struct radix_node rnode; 119struct radix_mask rmask; 120struct radix_node_head **rt_tables; 121 122int NewTree = 0; 123 124struct timespec uptime; 125 126static struct sockaddr *kgetsa(struct sockaddr *); 127static void size_cols(int ef, struct radix_node *rn); 128static void size_cols_tree(struct radix_node *rn); 129static void size_cols_rtentry(struct rtentry *rt); 130static void p_tree(struct radix_node *); 131static void p_rtnode(void); 132static void ntreestuff(void); 133static void np_rtentry(struct rt_msghdr *); 134static void p_sockaddr(struct sockaddr *, struct sockaddr *, int, int); 135static const char *fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, 136 int flags); 137static void p_flags(int, const char *); 138static const char *fmt_flags(int f); 139static void p_rtentry(struct rtentry *); 140static void domask(char *, in_addr_t, u_long); 141 142/* 143 * Print routing tables. 144 */ 145void 146routepr(u_long rtree, int fibnum) 147{ 148 struct radix_node_head **rnhp, *rnh, head; 149 size_t intsize; 150 int fam, numfibs; 151 152 intsize = sizeof(int); 153 if (fibnum == -1 && 154 sysctlbyname("net.my_fibnum", &fibnum, &intsize, NULL, 0) == -1) 155 fibnum = 0; 156 if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1) 157 numfibs = 1; 158 if (fibnum < 0 || fibnum > numfibs - 1) 159 errx(EX_USAGE, "%d: invalid fib", fibnum); 160 rt_tables = calloc(numfibs * (AF_MAX+1), 161 sizeof(struct radix_node_head *)); 162 if (rt_tables == NULL) 163 err(EX_OSERR, "memory allocation failed"); 164 /* 165 * Since kernel & userland use different timebase 166 * (time_uptime vs time_second) and we are reading kernel memory 167 * directly we should do rt_rmx.rmx_expire --> expire_time conversion. 168 */ 169 if (clock_gettime(CLOCK_UPTIME, &uptime) < 0) 170 err(EX_OSERR, "clock_gettime() failed"); 171 172 printf("Routing tables"); 173 if (fibnum) 174 printf(" (fib: %d)", fibnum); 175 printf("\n"); 176 177 if (Aflag == 0 && NewTree) 178 ntreestuff(); 179 else { 180 if (rtree == 0) { 181 printf("rt_tables: symbol not in namelist\n"); 182 return; 183 } 184 185 if (kread((u_long)(rtree), (char *)(rt_tables), (numfibs * 186 (AF_MAX+1) * sizeof(struct radix_node_head *))) != 0) 187 return; 188 for (fam = 0; fam <= AF_MAX; fam++) { 189 int tmpfib; 190 191 switch (fam) { 192 case AF_INET6: 193 case AF_INET: 194 tmpfib = fibnum; 195 break; 196 default: 197 tmpfib = 0; 198 } 199 rnhp = (struct radix_node_head **)*rt_tables; 200 /* Calculate the in-kernel address. */ 201 rnhp += tmpfib * (AF_MAX+1) + fam; 202 /* Read the in kernel rhn pointer. */ 203 if (kget(rnhp, rnh) != 0) 204 continue; 205 if (rnh == NULL) 206 continue; 207 /* Read the rnh data. */ 208 if (kget(rnh, head) != 0) 209 continue; 210 if (fam == AF_UNSPEC) { 211 if (Aflag && af == 0) { 212 printf("Netmasks:\n"); 213 p_tree(head.rnh_treetop); 214 } 215 } else if (af == AF_UNSPEC || af == fam) { 216 size_cols(fam, head.rnh_treetop); 217 pr_family(fam); 218 do_rtent = 1; 219 pr_rthdr(fam); 220 p_tree(head.rnh_treetop); 221 } 222 } 223 } 224} 225 226/* 227 * Print address family header before a section of the routing table. 228 */ 229void 230pr_family(int af1) 231{ 232 const char *afname; 233 234 switch (af1) { 235 case AF_INET: 236 afname = "Internet"; 237 break; 238#ifdef INET6 239 case AF_INET6: 240 afname = "Internet6"; 241 break; 242#endif /*INET6*/ 243 case AF_IPX: 244 afname = "IPX"; 245 break; 246 case AF_ISO: 247 afname = "ISO"; 248 break; 249 case AF_APPLETALK: 250 afname = "AppleTalk"; 251 break; 252 case AF_CCITT: 253 afname = "X.25"; 254 break; 255 case AF_NETGRAPH: 256 afname = "Netgraph"; 257 break; 258 default: 259 afname = NULL; 260 break; 261 } 262 if (afname) 263 printf("\n%s:\n", afname); 264 else 265 printf("\nProtocol Family %d:\n", af1); 266} 267 268/* column widths; each followed by one space */ 269#ifndef INET6 270#define WID_DST_DEFAULT(af) 18 /* width of destination column */ 271#define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 272#define WID_IF_DEFAULT(af) (Wflag ? 8 : 6) /* width of netif column */ 273#else 274#define WID_DST_DEFAULT(af) \ 275 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 276#define WID_GW_DEFAULT(af) \ 277 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 278#define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 8 : 6)) 279#endif /*INET6*/ 280 281static int wid_dst; 282static int wid_gw; 283static int wid_flags; 284static int wid_refs; 285static int wid_use; 286static int wid_mtu; 287static int wid_if; 288static int wid_expire; 289 290static void 291size_cols(int ef __unused, struct radix_node *rn) 292{ 293 wid_dst = WID_DST_DEFAULT(ef); 294 wid_gw = WID_GW_DEFAULT(ef); 295 wid_flags = 6; 296 wid_refs = 6; 297 wid_use = 8; 298 wid_mtu = 6; 299 wid_if = WID_IF_DEFAULT(ef); 300 wid_expire = 6; 301 302 if (Wflag) 303 size_cols_tree(rn); 304} 305 306static void 307size_cols_tree(struct radix_node *rn) 308{ 309again: 310 if (kget(rn, rnode) != 0) 311 return; 312 if (!(rnode.rn_flags & RNF_ACTIVE)) 313 return; 314 if (rnode.rn_bit < 0) { 315 if ((rnode.rn_flags & RNF_ROOT) == 0) { 316 if (kget(rn, rtentry) != 0) 317 return; 318 size_cols_rtentry(&rtentry); 319 } 320 if ((rn = rnode.rn_dupedkey)) 321 goto again; 322 } else { 323 rn = rnode.rn_right; 324 size_cols_tree(rnode.rn_left); 325 size_cols_tree(rn); 326 } 327} 328 329static void 330size_cols_rtentry(struct rtentry *rt) 331{ 332 static struct ifnet ifnet, *lastif; 333 static char buffer[100]; 334 const char *bp; 335 struct sockaddr *sa; 336 sa_u addr, mask; 337 int len; 338 339 bzero(&addr, sizeof(addr)); 340 if ((sa = kgetsa(rt_key(rt)))) 341 bcopy(sa, &addr, sa->sa_len); 342 bzero(&mask, sizeof(mask)); 343 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 344 bcopy(sa, &mask, sa->sa_len); 345 bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags); 346 len = strlen(bp); 347 wid_dst = MAX(len, wid_dst); 348 349 bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST); 350 len = strlen(bp); 351 wid_gw = MAX(len, wid_gw); 352 353 bp = fmt_flags(rt->rt_flags); 354 len = strlen(bp); 355 wid_flags = MAX(len, wid_flags); 356 357 if (addr.u_sa.sa_family == AF_INET || Wflag) { 358 len = snprintf(buffer, sizeof(buffer), "%d", rt->rt_refcnt); 359 wid_refs = MAX(len, wid_refs); 360 len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_use); 361 wid_use = MAX(len, wid_use); 362 if (Wflag && rt->rt_rmx.rmx_mtu != 0) { 363 len = snprintf(buffer, sizeof(buffer), 364 "%lu", rt->rt_rmx.rmx_mtu); 365 wid_mtu = MAX(len, wid_mtu); 366 } 367 } 368 if (rt->rt_ifp) { 369 if (rt->rt_ifp != lastif) { 370 if (kget(rt->rt_ifp, ifnet) == 0) 371 len = strlen(ifnet.if_xname); 372 else 373 len = strlen("---"); 374 lastif = rt->rt_ifp; 375 wid_if = MAX(len, wid_if); 376 } 377 if (rt->rt_rmx.rmx_expire) { 378 time_t expire_time; 379 380 if ((expire_time = 381 rt->rt_rmx.rmx_expire - uptime.tv_sec) > 0) { 382 len = snprintf(buffer, sizeof(buffer), "%d", 383 (int)expire_time); 384 wid_expire = MAX(len, wid_expire); 385 } 386 } 387 } 388} 389 390 391/* 392 * Print header for routing table columns. 393 */ 394void 395pr_rthdr(int af1) 396{ 397 398 if (Aflag) 399 printf("%-8.8s ","Address"); 400 if (af1 == AF_INET || Wflag) { 401 if (Wflag) { 402 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*.*s %*s\n", 403 wid_dst, wid_dst, "Destination", 404 wid_gw, wid_gw, "Gateway", 405 wid_flags, wid_flags, "Flags", 406 wid_refs, wid_refs, "Refs", 407 wid_use, wid_use, "Use", 408 wid_mtu, wid_mtu, "Mtu", 409 wid_if, wid_if, "Netif", 410 wid_expire, "Expire"); 411 } else { 412 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*s\n", 413 wid_dst, wid_dst, "Destination", 414 wid_gw, wid_gw, "Gateway", 415 wid_flags, wid_flags, "Flags", 416 wid_refs, wid_refs, "Refs", 417 wid_use, wid_use, "Use", 418 wid_if, wid_if, "Netif", 419 wid_expire, "Expire"); 420 } 421 } else { 422 printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n", 423 wid_dst, wid_dst, "Destination", 424 wid_gw, wid_gw, "Gateway", 425 wid_flags, wid_flags, "Flags", 426 wid_if, wid_if, "Netif", 427 wid_expire, "Expire"); 428 } 429} 430 431static struct sockaddr * 432kgetsa(struct sockaddr *dst) 433{ 434 435 if (kget(dst, pt_u.u_sa) != 0) 436 return (NULL); 437 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 438 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 439 return (&pt_u.u_sa); 440} 441 442static void 443p_tree(struct radix_node *rn) 444{ 445 446again: 447 if (kget(rn, rnode) != 0) 448 return; 449 if (!(rnode.rn_flags & RNF_ACTIVE)) 450 return; 451 if (rnode.rn_bit < 0) { 452 if (Aflag) 453 printf("%-8.8lx ", (u_long)rn); 454 if (rnode.rn_flags & RNF_ROOT) { 455 if (Aflag) 456 printf("(root node)%s", 457 rnode.rn_dupedkey ? " =>\n" : "\n"); 458 } else if (do_rtent) { 459 if (kget(rn, rtentry) == 0) { 460 p_rtentry(&rtentry); 461 if (Aflag) 462 p_rtnode(); 463 } 464 } else { 465 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 466 NULL, 0, 44); 467 putchar('\n'); 468 } 469 if ((rn = rnode.rn_dupedkey)) 470 goto again; 471 } else { 472 if (Aflag && do_rtent) { 473 printf("%-8.8lx ", (u_long)rn); 474 p_rtnode(); 475 } 476 rn = rnode.rn_right; 477 p_tree(rnode.rn_left); 478 p_tree(rn); 479 } 480} 481 482char nbuf[20]; 483 484static void 485p_rtnode(void) 486{ 487 struct radix_mask *rm = rnode.rn_mklist; 488 489 if (rnode.rn_bit < 0) { 490 if (rnode.rn_mask) { 491 printf("\t mask "); 492 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 493 NULL, 0, -1); 494 } else if (rm == 0) 495 return; 496 } else { 497 sprintf(nbuf, "(%d)", rnode.rn_bit); 498 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right); 499 } 500 while (rm) { 501 if (kget(rm, rmask) != 0) 502 break; 503 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 504 printf(" mk = %8.8lx {(%d),%s", 505 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 506 if (rmask.rm_flags & RNF_NORMAL) { 507 struct radix_node rnode_aux; 508 printf(" <normal>, "); 509 if (kget(rmask.rm_leaf, rnode_aux) == 0) 510 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 511 NULL, 0, -1); 512 else 513 p_sockaddr(NULL, NULL, 0, -1); 514 } else 515 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 516 NULL, 0, -1); 517 putchar('}'); 518 if ((rm = rmask.rm_mklist)) 519 printf(" ->"); 520 } 521 putchar('\n'); 522} 523 524static void 525ntreestuff(void) 526{ 527 size_t needed; 528 int mib[6]; 529 char *buf, *next, *lim; 530 struct rt_msghdr *rtm; 531 532 mib[0] = CTL_NET; 533 mib[1] = PF_ROUTE; 534 mib[2] = 0; 535 mib[3] = 0; 536 mib[4] = NET_RT_DUMP; 537 mib[5] = 0; 538 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 539 err(1, "sysctl: net.route.0.0.dump estimate"); 540 } 541 542 if ((buf = malloc(needed)) == 0) { 543 errx(2, "malloc(%lu)", (unsigned long)needed); 544 } 545 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 546 err(1, "sysctl: net.route.0.0.dump"); 547 } 548 lim = buf + needed; 549 for (next = buf; next < lim; next += rtm->rtm_msglen) { 550 rtm = (struct rt_msghdr *)next; 551 np_rtentry(rtm); 552 } 553} 554 555static void 556np_rtentry(struct rt_msghdr *rtm) 557{ 558 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 559#ifdef notdef 560 static int masks_done, banner_printed; 561#endif 562 static int old_af; 563 int af1 = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST; 564 565#ifdef notdef 566 /* for the moment, netmasks are skipped over */ 567 if (!banner_printed) { 568 printf("Netmasks:\n"); 569 banner_printed = 1; 570 } 571 if (masks_done == 0) { 572 if (rtm->rtm_addrs != RTA_DST ) { 573 masks_done = 1; 574 af1 = sa->sa_family; 575 } 576 } else 577#endif 578 af1 = sa->sa_family; 579 if (af1 != old_af) { 580 pr_family(af1); 581 old_af = af1; 582 } 583 if (rtm->rtm_addrs == RTA_DST) 584 p_sockaddr(sa, NULL, 0, 36); 585 else { 586 p_sockaddr(sa, NULL, rtm->rtm_flags, 16); 587 sa = (struct sockaddr *)(SA_SIZE(sa) + (char *)sa); 588 p_sockaddr(sa, NULL, 0, 18); 589 } 590 p_flags(rtm->rtm_flags & interesting, "%-6.6s "); 591 putchar('\n'); 592} 593 594static void 595p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 596{ 597 const char *cp; 598 599 cp = fmt_sockaddr(sa, mask, flags); 600 601 if (width < 0 ) 602 printf("%s ", cp); 603 else { 604 if (numeric_addr) 605 printf("%-*s ", width, cp); 606 else 607 printf("%-*.*s ", width, width, cp); 608 } 609} 610 611static const char * 612fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 613{ 614 static char workbuf[128]; 615 const char *cp; 616 617 if (sa == NULL) 618 return ("null"); 619 620 switch(sa->sa_family) { 621 case AF_INET: 622 { 623 struct sockaddr_in *sockin = (struct sockaddr_in *)sa; 624 625 if ((sockin->sin_addr.s_addr == INADDR_ANY) && 626 mask && 627 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 628 ==0L) 629 cp = "default" ; 630 else if (flags & RTF_HOST) 631 cp = routename(sockin->sin_addr.s_addr); 632 else if (mask) 633 cp = netname(sockin->sin_addr.s_addr, 634 ((struct sockaddr_in *)mask)->sin_addr.s_addr); 635 else 636 cp = netname(sockin->sin_addr.s_addr, INADDR_ANY); 637 break; 638 } 639 640#ifdef INET6 641 case AF_INET6: 642 { 643 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 644 645 /* 646 * The sa6->sin6_scope_id must be filled here because 647 * this sockaddr is extracted from kmem(4) directly 648 * and has KAME-specific embedded scope id in 649 * sa6->sin6_addr.s6_addr[2]. 650 */ 651 in6_fillscopeid(sa6); 652 653 if (flags & RTF_HOST) 654 cp = routename6(sa6); 655 else if (mask) 656 cp = netname6(sa6, 657 &((struct sockaddr_in6 *)mask)->sin6_addr); 658 else { 659 cp = netname6(sa6, NULL); 660 } 661 break; 662 } 663#endif /*INET6*/ 664 665 case AF_IPX: 666 { 667 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 668 if (ipx_nullnet(satoipx_addr(work))) 669 cp = "default"; 670 else 671 cp = ipx_print(sa); 672 break; 673 } 674 case AF_APPLETALK: 675 { 676 if (!(flags & RTF_HOST) && mask) 677 cp = atalk_print2(sa,mask,9); 678 else 679 cp = atalk_print(sa,11); 680 break; 681 } 682 case AF_NETGRAPH: 683 { 684 strlcpy(workbuf, ((struct sockaddr_ng *)sa)->sg_data, 685 sizeof(workbuf)); 686 cp = workbuf; 687 break; 688 } 689 690 case AF_LINK: 691 { 692 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 693 694 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 695 sdl->sdl_slen == 0) { 696 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 697 cp = workbuf; 698 } else 699 switch (sdl->sdl_type) { 700 701 case IFT_ETHER: 702 case IFT_L2VLAN: 703 case IFT_BRIDGE: 704 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 705 cp = ether_ntoa((struct ether_addr *) 706 (sdl->sdl_data + sdl->sdl_nlen)); 707 break; 708 } 709 /* FALLTHROUGH */ 710 default: 711 cp = link_ntoa(sdl); 712 break; 713 } 714 break; 715 } 716 717 default: 718 { 719 u_char *s = (u_char *)sa->sa_data, *slim; 720 char *cq, *cqlim; 721 722 cq = workbuf; 723 slim = sa->sa_len + (u_char *) sa; 724 cqlim = cq + sizeof(workbuf) - 6; 725 cq += sprintf(cq, "(%d)", sa->sa_family); 726 while (s < slim && cq < cqlim) { 727 cq += sprintf(cq, " %02x", *s++); 728 if (s < slim) 729 cq += sprintf(cq, "%02x", *s++); 730 } 731 cp = workbuf; 732 } 733 } 734 735 return (cp); 736} 737 738static void 739p_flags(int f, const char *format) 740{ 741 printf(format, fmt_flags(f)); 742} 743 744static const char * 745fmt_flags(int f) 746{ 747 static char name[33]; 748 char *flags; 749 struct bits *p = bits; 750 751 for (flags = name; p->b_mask; p++) 752 if (p->b_mask & f) 753 *flags++ = p->b_val; 754 *flags = '\0'; 755 return (name); 756} 757 758static void 759p_rtentry(struct rtentry *rt) 760{ 761 static struct ifnet ifnet, *lastif; 762 static char buffer[128]; 763 static char prettyname[128]; 764 struct sockaddr *sa; 765 sa_u addr, mask; 766 767 bzero(&addr, sizeof(addr)); 768 if ((sa = kgetsa(rt_key(rt)))) 769 bcopy(sa, &addr, sa->sa_len); 770 bzero(&mask, sizeof(mask)); 771 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 772 bcopy(sa, &mask, sa->sa_len); 773 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst); 774 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); 775 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 776 p_flags(rt->rt_flags, buffer); 777 if (addr.u_sa.sa_family == AF_INET || Wflag) { 778 printf("%*d %*lu ", wid_refs, rt->rt_refcnt, 779 wid_use, rt->rt_use); 780 if (Wflag) { 781 if (rt->rt_rmx.rmx_mtu != 0) 782 printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu); 783 else 784 printf("%*s ", wid_mtu, ""); 785 } 786 } 787 if (rt->rt_ifp) { 788 if (rt->rt_ifp != lastif) { 789 if (kget(rt->rt_ifp, ifnet) == 0) 790 strlcpy(prettyname, ifnet.if_xname, 791 sizeof(prettyname)); 792 else 793 strlcpy(prettyname, "---", sizeof(prettyname)); 794 lastif = rt->rt_ifp; 795 } 796 printf("%*.*s", wid_if, wid_if, prettyname); 797 if (rt->rt_rmx.rmx_expire) { 798 time_t expire_time; 799 800 if ((expire_time = 801 rt->rt_rmx.rmx_expire - uptime.tv_sec) > 0) 802 printf(" %*d", wid_expire, (int)expire_time); 803 } 804 if (rt->rt_nodes[0].rn_dupedkey) 805 printf(" =>"); 806 } 807 putchar('\n'); 808} 809 810char * 811routename(in_addr_t in) 812{ 813 char *cp; 814 static char line[MAXHOSTNAMELEN]; 815 struct hostent *hp; 816 817 cp = 0; 818 if (!numeric_addr) { 819 hp = gethostbyaddr(&in, sizeof (struct in_addr), AF_INET); 820 if (hp) { 821 cp = hp->h_name; 822 trimdomain(cp, strlen(cp)); 823 } 824 } 825 if (cp) { 826 strlcpy(line, cp, sizeof(line)); 827 } else { 828#define C(x) ((x) & 0xff) 829 in = ntohl(in); 830 sprintf(line, "%u.%u.%u.%u", 831 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 832 } 833 return (line); 834} 835 836#define NSHIFT(m) ( \ 837 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 838 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 839 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 840 0) 841 842static void 843domask(char *dst, in_addr_t addr __unused, u_long mask) 844{ 845 int b, i; 846 847 if (mask == 0 || (!numeric_addr && NSHIFT(mask) != 0)) { 848 *dst = '\0'; 849 return; 850 } 851 i = 0; 852 for (b = 0; b < 32; b++) 853 if (mask & (1 << b)) { 854 int bb; 855 856 i = b; 857 for (bb = b+1; bb < 32; bb++) 858 if (!(mask & (1 << bb))) { 859 i = -1; /* noncontig */ 860 break; 861 } 862 break; 863 } 864 if (i == -1) 865 sprintf(dst, "&0x%lx", mask); 866 else 867 sprintf(dst, "/%d", 32-i); 868} 869 870/* 871 * Return the name of the network whose address is given. 872 */ 873char * 874netname(in_addr_t in, in_addr_t mask) 875{ 876 char *cp = 0; 877 static char line[MAXHOSTNAMELEN]; 878 struct netent *np = 0; 879 in_addr_t i; 880 881 /* It is ok to supply host address. */ 882 in &= mask; 883 884 i = ntohl(in); 885 if (!numeric_addr && i) { 886 np = getnetbyaddr(i >> NSHIFT(ntohl(mask)), AF_INET); 887 if (np != NULL) { 888 cp = np->n_name; 889 trimdomain(cp, strlen(cp)); 890 } 891 } 892 if (cp != NULL) { 893 strlcpy(line, cp, sizeof(line)); 894 } else { 895 inet_ntop(AF_INET, &in, line, sizeof(line) - 1); 896 } 897 domask(line + strlen(line), i, ntohl(mask)); 898 return (line); 899} 900 901#undef NSHIFT 902 903#ifdef INET6 904void 905in6_fillscopeid(struct sockaddr_in6 *sa6) 906{ 907#if defined(__KAME__) 908 /* 909 * XXX: This is a special workaround for KAME kernels. 910 * sin6_scope_id field of SA should be set in the future. 911 */ 912 if (IN6_IS_ADDR_LINKLOCAL(&sa6->sin6_addr) || 913 IN6_IS_ADDR_MC_NODELOCAL(&sa6->sin6_addr) || 914 IN6_IS_ADDR_MC_LINKLOCAL(&sa6->sin6_addr)) { 915 /* XXX: override is ok? */ 916 sa6->sin6_scope_id = 917 ntohs(*(u_int16_t *)&sa6->sin6_addr.s6_addr[2]); 918 sa6->sin6_addr.s6_addr[2] = sa6->sin6_addr.s6_addr[3] = 0; 919 } 920#endif 921} 922 923const char * 924netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 925{ 926 static char line[MAXHOSTNAMELEN]; 927 u_char *p = (u_char *)mask; 928 u_char *lim; 929 int masklen, illegal = 0, flag = 0; 930 931 if (mask) { 932 for (masklen = 0, lim = p + 16; p < lim; p++) { 933 switch (*p) { 934 case 0xff: 935 masklen += 8; 936 break; 937 case 0xfe: 938 masklen += 7; 939 break; 940 case 0xfc: 941 masklen += 6; 942 break; 943 case 0xf8: 944 masklen += 5; 945 break; 946 case 0xf0: 947 masklen += 4; 948 break; 949 case 0xe0: 950 masklen += 3; 951 break; 952 case 0xc0: 953 masklen += 2; 954 break; 955 case 0x80: 956 masklen += 1; 957 break; 958 case 0x00: 959 break; 960 default: 961 illegal ++; 962 break; 963 } 964 } 965 if (illegal) 966 fprintf(stderr, "illegal prefixlen\n"); 967 } 968 else 969 masklen = 128; 970 971 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 972 return("default"); 973 974 if (numeric_addr) 975 flag |= NI_NUMERICHOST; 976 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 977 NULL, 0, flag); 978 979 if (numeric_addr) 980 sprintf(&line[strlen(line)], "/%d", masklen); 981 982 return line; 983} 984 985char * 986routename6(struct sockaddr_in6 *sa6) 987{ 988 static char line[MAXHOSTNAMELEN]; 989 int flag = 0; 990 /* use local variable for safety */ 991 struct sockaddr_in6 sa6_local; 992 993 sa6_local.sin6_family = AF_INET6; 994 sa6_local.sin6_len = sizeof(sa6_local); 995 sa6_local.sin6_addr = sa6->sin6_addr; 996 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 997 998 if (numeric_addr) 999 flag |= NI_NUMERICHOST; 1000 1001 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 1002 line, sizeof(line), NULL, 0, flag); 1003 1004 return line; 1005} 1006#endif /*INET6*/ 1007 1008/* 1009 * Print routing statistics 1010 */ 1011void 1012rt_stats(u_long rtsaddr, u_long rttaddr) 1013{ 1014 struct rtstat rtstat; 1015 int rttrash; 1016 1017 if (rtsaddr == 0) { 1018 printf("rtstat: symbol not in namelist\n"); 1019 return; 1020 } 1021 if (rttaddr == 0) { 1022 printf("rttrash: symbol not in namelist\n"); 1023 return; 1024 } 1025 kread(rtsaddr, (char *)&rtstat, sizeof (rtstat)); 1026 kread(rttaddr, (char *)&rttrash, sizeof (rttrash)); 1027 printf("routing:\n"); 1028 1029#define p(f, m) if (rtstat.f || sflag <= 1) \ 1030 printf(m, rtstat.f, plural(rtstat.f)) 1031 1032 p(rts_badredirect, "\t%hu bad routing redirect%s\n"); 1033 p(rts_dynamic, "\t%hu dynamically created route%s\n"); 1034 p(rts_newgateway, "\t%hu new gateway%s due to redirects\n"); 1035 p(rts_unreach, "\t%hu destination%s found unreachable\n"); 1036 p(rts_wildcard, "\t%hu use%s of a wildcard route\n"); 1037#undef p 1038 1039 if (rttrash || sflag <= 1) 1040 printf("\t%u route%s not in table but not freed\n", 1041 rttrash, plural(rttrash)); 1042} 1043 1044char * 1045ipx_print(struct sockaddr *sa) 1046{ 1047 u_short port; 1048 struct servent *sp = 0; 1049 const char *net = "", *host = ""; 1050 char *p; 1051 u_char *q; 1052 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 1053 static char mybuf[50]; 1054 char cport[10], chost[15], cnet[15]; 1055 1056 port = ntohs(work.x_port); 1057 1058 if (ipx_nullnet(work) && ipx_nullhost(work)) { 1059 1060 if (port) { 1061 if (sp) 1062 sprintf(mybuf, "*.%s", sp->s_name); 1063 else 1064 sprintf(mybuf, "*.%x", port); 1065 } else 1066 sprintf(mybuf, "*.*"); 1067 1068 return (mybuf); 1069 } 1070 1071 if (ipx_wildnet(work)) 1072 net = "any"; 1073 else if (ipx_nullnet(work)) 1074 net = "*"; 1075 else { 1076 q = work.x_net.c_net; 1077 sprintf(cnet, "%02x%02x%02x%02x", 1078 q[0], q[1], q[2], q[3]); 1079 for (p = cnet; *p == '0' && p < cnet + 8; p++) 1080 continue; 1081 net = p; 1082 } 1083 1084 if (ipx_wildhost(work)) 1085 host = "any"; 1086 else if (ipx_nullhost(work)) 1087 host = "*"; 1088 else { 1089 q = work.x_host.c_host; 1090 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 1091 q[0], q[1], q[2], q[3], q[4], q[5]); 1092 for (p = chost; *p == '0' && p < chost + 12; p++) 1093 continue; 1094 host = p; 1095 } 1096 1097 if (port) { 1098 if (strcmp(host, "*") == 0) 1099 host = ""; 1100 if (sp) 1101 snprintf(cport, sizeof(cport), 1102 "%s%s", *host ? "." : "", sp->s_name); 1103 else 1104 snprintf(cport, sizeof(cport), 1105 "%s%x", *host ? "." : "", port); 1106 } else 1107 *cport = 0; 1108 1109 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 1110 return(mybuf); 1111} 1112 1113char * 1114ipx_phost(struct sockaddr *sa) 1115{ 1116 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 1117 struct sockaddr_ipx work; 1118 static union ipx_net ipx_zeronet; 1119 char *p; 1120 1121 work = *sipx; 1122 1123 work.sipx_addr.x_port = 0; 1124 work.sipx_addr.x_net = ipx_zeronet; 1125 p = ipx_print((struct sockaddr *)&work); 1126 if (strncmp("*.", p, 2) == 0) p += 2; 1127 1128 return(p); 1129} 1130 1131void 1132upHex(char *p0) 1133{ 1134 char *p = p0; 1135 1136 for (; *p; p++) 1137 switch (*p) { 1138 1139 case 'a': 1140 case 'b': 1141 case 'c': 1142 case 'd': 1143 case 'e': 1144 case 'f': 1145 *p += ('A' - 'a'); 1146 break; 1147 } 1148} 1149