route.c revision 272846
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 272846 2014-10-09 22:54:51Z hrs $"); 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_PROTO3, '3' }, 96 { RTF_BLACKHOLE,'B' }, 97 { RTF_BROADCAST,'b' }, 98#ifdef RTF_LLINFO 99 { RTF_LLINFO, 'L' }, 100#endif 101 { 0 , 0 } 102}; 103 104/* 105 * kvm(3) bindings for every needed symbol 106 */ 107static struct nlist rl[] = { 108#define N_RTSTAT 0 109 { .n_name = "_rtstat" }, 110#define N_RTREE 1 111 { .n_name = "_rt_tables"}, 112#define N_RTTRASH 2 113 { .n_name = "_rttrash" }, 114 { .n_name = NULL }, 115}; 116 117typedef union { 118 long dummy; /* Helps align structure. */ 119 struct sockaddr u_sa; 120 u_short u_data[128]; 121} sa_u; 122 123static sa_u pt_u; 124 125struct ifmap_entry { 126 char ifname[IFNAMSIZ]; 127}; 128 129static struct ifmap_entry *ifmap; 130static int ifmap_size; 131 132int do_rtent = 0; 133struct rtentry rtentry; 134struct radix_node rnode; 135struct radix_mask rmask; 136 137int NewTree = 1; 138 139struct timespec uptime; 140 141static struct sockaddr *kgetsa(struct sockaddr *); 142static void size_cols(int ef, struct radix_node *rn); 143static void size_cols_tree(struct radix_node *rn); 144static void size_cols_rtentry(struct rtentry *rt); 145static void p_rtnode_kvm(void); 146static void p_rtable_sysctl(int, int); 147static void p_rtable_kvm(int, int ); 148static void p_rtree_kvm(struct radix_node *); 149static void p_rtentry_sysctl(struct rt_msghdr *); 150static void p_sockaddr(struct sockaddr *, struct sockaddr *, int, int); 151static const char *fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, 152 int flags); 153static void p_flags(int, const char *); 154static const char *fmt_flags(int f); 155static void p_rtentry_kvm(struct rtentry *); 156static void domask(char *, in_addr_t, u_long); 157 158/* 159 * Print routing tables. 160 */ 161void 162routepr(int fibnum, int af) 163{ 164 size_t intsize; 165 int numfibs; 166 167 intsize = sizeof(int); 168 if (fibnum == -1 && 169 sysctlbyname("net.my_fibnum", &fibnum, &intsize, NULL, 0) == -1) 170 fibnum = 0; 171 if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1) 172 numfibs = 1; 173 if (fibnum < 0 || fibnum > numfibs - 1) 174 errx(EX_USAGE, "%d: invalid fib", fibnum); 175 /* 176 * Since kernel & userland use different timebase 177 * (time_uptime vs time_second) and we are reading kernel memory 178 * directly we should do rt_expire --> expire_time conversion. 179 */ 180 if (clock_gettime(CLOCK_UPTIME, &uptime) < 0) 181 err(EX_OSERR, "clock_gettime() failed"); 182 183 printf("Routing tables"); 184 if (fibnum) 185 printf(" (fib: %d)", fibnum); 186 printf("\n"); 187 188 if (Aflag == 0 && live != 0 && NewTree) 189 p_rtable_sysctl(fibnum, af); 190 else 191 p_rtable_kvm(fibnum, af); 192} 193 194 195/* 196 * Print address family header before a section of the routing table. 197 */ 198void 199pr_family(int af1) 200{ 201 const char *afname; 202 203 switch (af1) { 204 case AF_INET: 205 afname = "Internet"; 206 break; 207#ifdef INET6 208 case AF_INET6: 209 afname = "Internet6"; 210 break; 211#endif /*INET6*/ 212 case AF_IPX: 213 afname = "IPX"; 214 break; 215 case AF_ISO: 216 afname = "ISO"; 217 break; 218 case AF_APPLETALK: 219 afname = "AppleTalk"; 220 break; 221 case AF_CCITT: 222 afname = "X.25"; 223 break; 224 case AF_NETGRAPH: 225 afname = "Netgraph"; 226 break; 227 default: 228 afname = NULL; 229 break; 230 } 231 if (afname) 232 printf("\n%s:\n", afname); 233 else 234 printf("\nProtocol Family %d:\n", af1); 235} 236 237/* column widths; each followed by one space */ 238#ifndef INET6 239#define WID_DST_DEFAULT(af) 18 /* width of destination column */ 240#define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 241#define WID_IF_DEFAULT(af) (Wflag ? 10 : 8) /* width of netif column */ 242#else 243#define WID_DST_DEFAULT(af) \ 244 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 245#define WID_GW_DEFAULT(af) \ 246 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 247#define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 10 : 8)) 248#endif /*INET6*/ 249 250static int wid_dst; 251static int wid_gw; 252static int wid_flags; 253static int wid_pksent; 254static int wid_mtu; 255static int wid_if; 256static int wid_expire; 257 258static void 259size_cols(int ef, struct radix_node *rn) 260{ 261 wid_dst = WID_DST_DEFAULT(ef); 262 wid_gw = WID_GW_DEFAULT(ef); 263 wid_flags = 6; 264 wid_pksent = 8; 265 wid_mtu = 6; 266 wid_if = WID_IF_DEFAULT(ef); 267 wid_expire = 6; 268 269 if (Wflag && rn != NULL) 270 size_cols_tree(rn); 271} 272 273static void 274size_cols_tree(struct radix_node *rn) 275{ 276again: 277 if (kget(rn, rnode) != 0) 278 return; 279 if (!(rnode.rn_flags & RNF_ACTIVE)) 280 return; 281 if (rnode.rn_bit < 0) { 282 if ((rnode.rn_flags & RNF_ROOT) == 0) { 283 if (kget(rn, rtentry) != 0) 284 return; 285 size_cols_rtentry(&rtentry); 286 } 287 if ((rn = rnode.rn_dupedkey)) 288 goto again; 289 } else { 290 rn = rnode.rn_right; 291 size_cols_tree(rnode.rn_left); 292 size_cols_tree(rn); 293 } 294} 295 296static void 297size_cols_rtentry(struct rtentry *rt) 298{ 299 static struct ifnet ifnet, *lastif; 300 static char buffer[100]; 301 const char *bp; 302 struct sockaddr *sa; 303 sa_u addr, mask; 304 int len; 305 306 bzero(&addr, sizeof(addr)); 307 if ((sa = kgetsa(rt_key(rt)))) 308 bcopy(sa, &addr, sa->sa_len); 309 bzero(&mask, sizeof(mask)); 310 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 311 bcopy(sa, &mask, sa->sa_len); 312 bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags); 313 len = strlen(bp); 314 wid_dst = MAX(len, wid_dst); 315 316 bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST); 317 len = strlen(bp); 318 wid_gw = MAX(len, wid_gw); 319 320 bp = fmt_flags(rt->rt_flags); 321 len = strlen(bp); 322 wid_flags = MAX(len, wid_flags); 323 324 if (Wflag) { 325 len = snprintf(buffer, sizeof(buffer), "%ju", 326 (uintmax_t )kread_counter((u_long )rt->rt_pksent)); 327 wid_pksent = MAX(len, wid_pksent); 328 } 329 if (rt->rt_ifp) { 330 if (rt->rt_ifp != lastif) { 331 if (kget(rt->rt_ifp, ifnet) == 0) 332 len = strlen(ifnet.if_xname); 333 else 334 len = strlen("---"); 335 lastif = rt->rt_ifp; 336 wid_if = MAX(len, wid_if); 337 } 338 if (rt->rt_expire) { 339 time_t expire_time; 340 341 if ((expire_time = 342 rt->rt_expire - uptime.tv_sec) > 0) { 343 len = snprintf(buffer, sizeof(buffer), "%d", 344 (int)expire_time); 345 wid_expire = MAX(len, wid_expire); 346 } 347 } 348 } 349} 350 351 352/* 353 * Print header for routing table columns. 354 */ 355void 356pr_rthdr(int af1) 357{ 358 359 if (Aflag) 360 printf("%-8.8s ","Address"); 361 if (Wflag) { 362 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*s\n", 363 wid_dst, wid_dst, "Destination", 364 wid_gw, wid_gw, "Gateway", 365 wid_flags, wid_flags, "Flags", 366 wid_pksent, wid_pksent, "Use", 367 wid_mtu, wid_mtu, "Mtu", 368 wid_if, wid_if, "Netif", 369 wid_expire, "Expire"); 370 } else { 371 printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n", 372 wid_dst, wid_dst, "Destination", 373 wid_gw, wid_gw, "Gateway", 374 wid_flags, wid_flags, "Flags", 375 wid_if, wid_if, "Netif", 376 wid_expire, "Expire"); 377 } 378} 379 380static struct sockaddr * 381kgetsa(struct sockaddr *dst) 382{ 383 384 if (kget(dst, pt_u.u_sa) != 0) 385 return (NULL); 386 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 387 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 388 return (&pt_u.u_sa); 389} 390 391/* 392 * Print kernel routing tables for given fib 393 * using debugging kvm(3) interface. 394 */ 395static void 396p_rtable_kvm(int fibnum, int af) 397{ 398 struct radix_node_head **rnhp, *rnh, head; 399 struct radix_node_head **rt_tables; 400 u_long rtree; 401 int fam, af_size; 402 403 kresolve_list(rl); 404 if ((rtree = rl[N_RTREE].n_value) == 0) { 405 printf("rt_tables: symbol not in namelist\n"); 406 return; 407 } 408 409 af_size = (AF_MAX + 1) * sizeof(struct radix_node_head *); 410 rt_tables = calloc(1, af_size); 411 if (rt_tables == NULL) 412 err(EX_OSERR, "memory allocation failed"); 413 414 if (kread((u_long)(rtree), (char *)(rt_tables) + fibnum * af_size, 415 af_size) != 0) 416 err(EX_OSERR, "error retrieving radix pointers"); 417 for (fam = 0; fam <= AF_MAX; fam++) { 418 int tmpfib; 419 420 switch (fam) { 421 case AF_INET6: 422 case AF_INET: 423 tmpfib = fibnum; 424 break; 425 default: 426 tmpfib = 0; 427 } 428 rnhp = (struct radix_node_head **)*rt_tables; 429 /* Calculate the in-kernel address. */ 430 rnhp += tmpfib * (AF_MAX + 1) + fam; 431 /* Read the in kernel rhn pointer. */ 432 if (kget(rnhp, rnh) != 0) 433 continue; 434 if (rnh == NULL) 435 continue; 436 /* Read the rnh data. */ 437 if (kget(rnh, head) != 0) 438 continue; 439 if (fam == AF_UNSPEC) { 440 if (Aflag && af == 0) { 441 printf("Netmasks:\n"); 442 p_rtree_kvm(head.rnh_treetop); 443 } 444 } else if (af == AF_UNSPEC || af == fam) { 445 size_cols(fam, head.rnh_treetop); 446 pr_family(fam); 447 do_rtent = 1; 448 pr_rthdr(fam); 449 p_rtree_kvm(head.rnh_treetop); 450 } 451 } 452 453 free(rt_tables); 454} 455 456/* 457 * Print given kernel radix tree using 458 * debugging kvm(3) interface. 459 */ 460static void 461p_rtree_kvm(struct radix_node *rn) 462{ 463 464again: 465 if (kget(rn, rnode) != 0) 466 return; 467 if (!(rnode.rn_flags & RNF_ACTIVE)) 468 return; 469 if (rnode.rn_bit < 0) { 470 if (Aflag) 471 printf("%-8.8lx ", (u_long)rn); 472 if (rnode.rn_flags & RNF_ROOT) { 473 if (Aflag) 474 printf("(root node)%s", 475 rnode.rn_dupedkey ? " =>\n" : "\n"); 476 } else if (do_rtent) { 477 if (kget(rn, rtentry) == 0) { 478 p_rtentry_kvm(&rtentry); 479 if (Aflag) 480 p_rtnode_kvm(); 481 } 482 } else { 483 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 484 NULL, 0, 44); 485 putchar('\n'); 486 } 487 if ((rn = rnode.rn_dupedkey)) 488 goto again; 489 } else { 490 if (Aflag && do_rtent) { 491 printf("%-8.8lx ", (u_long)rn); 492 p_rtnode_kvm(); 493 } 494 rn = rnode.rn_right; 495 p_rtree_kvm(rnode.rn_left); 496 p_rtree_kvm(rn); 497 } 498} 499 500char nbuf[20]; 501 502static void 503p_rtnode_kvm(void) 504{ 505 struct radix_mask *rm = rnode.rn_mklist; 506 507 if (rnode.rn_bit < 0) { 508 if (rnode.rn_mask) { 509 printf("\t mask "); 510 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 511 NULL, 0, -1); 512 } else if (rm == 0) 513 return; 514 } else { 515 sprintf(nbuf, "(%d)", rnode.rn_bit); 516 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right); 517 } 518 while (rm) { 519 if (kget(rm, rmask) != 0) 520 break; 521 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 522 printf(" mk = %8.8lx {(%d),%s", 523 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 524 if (rmask.rm_flags & RNF_NORMAL) { 525 struct radix_node rnode_aux; 526 printf(" <normal>, "); 527 if (kget(rmask.rm_leaf, rnode_aux) == 0) 528 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 529 NULL, 0, -1); 530 else 531 p_sockaddr(NULL, NULL, 0, -1); 532 } else 533 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 534 NULL, 0, -1); 535 putchar('}'); 536 if ((rm = rmask.rm_mklist)) 537 printf(" ->"); 538 } 539 putchar('\n'); 540} 541 542static void 543p_rtable_sysctl(int fibnum, int af) 544{ 545 size_t needed; 546 int mib[7]; 547 char *buf, *next, *lim; 548 struct rt_msghdr *rtm; 549 struct sockaddr *sa; 550 int fam = 0, ifindex = 0, size; 551 552 struct ifaddrs *ifap, *ifa; 553 struct sockaddr_dl *sdl; 554 555 /* 556 * Retrieve interface list at first 557 * since we need #ifindex -> if_xname match 558 */ 559 if (getifaddrs(&ifap) != 0) 560 err(EX_OSERR, "getifaddrs"); 561 562 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 563 564 if (ifa->ifa_addr->sa_family != AF_LINK) 565 continue; 566 567 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 568 ifindex = sdl->sdl_index; 569 570 if (ifindex >= ifmap_size) { 571 size = roundup(ifindex + 1, 32) * 572 sizeof(struct ifmap_entry); 573 if ((ifmap = realloc(ifmap, size)) == NULL) 574 errx(2, "realloc(%d) failed", size); 575 memset(&ifmap[ifmap_size], 0, 576 size - ifmap_size * 577 sizeof(struct ifmap_entry)); 578 579 ifmap_size = roundup(ifindex + 1, 32); 580 } 581 582 if (*ifmap[ifindex].ifname != '\0') 583 continue; 584 585 strlcpy(ifmap[ifindex].ifname, ifa->ifa_name, IFNAMSIZ); 586 } 587 588 freeifaddrs(ifap); 589 590 mib[0] = CTL_NET; 591 mib[1] = PF_ROUTE; 592 mib[2] = 0; 593 mib[3] = af; 594 mib[4] = NET_RT_DUMP; 595 mib[5] = 0; 596 mib[6] = fibnum; 597 if (sysctl(mib, nitems(mib), NULL, &needed, NULL, 0) < 0) 598 err(EX_OSERR, "sysctl: net.route.0.%d.dump.%d estimate", af, 599 fibnum); 600 if ((buf = malloc(needed)) == NULL) 601 errx(2, "malloc(%lu)", (unsigned long)needed); 602 if (sysctl(mib, nitems(mib), buf, &needed, NULL, 0) < 0) 603 err(1, "sysctl: net.route.0.%d.dump.%d", af, fibnum); 604 lim = buf + needed; 605 for (next = buf; next < lim; next += rtm->rtm_msglen) { 606 rtm = (struct rt_msghdr *)next; 607 /* 608 * Peek inside header to determine AF 609 */ 610 sa = (struct sockaddr *)(rtm + 1); 611 if (fam != sa->sa_family) { 612 fam = sa->sa_family; 613 size_cols(fam, NULL); 614 pr_family(fam); 615 pr_rthdr(fam); 616 } 617 p_rtentry_sysctl(rtm); 618 } 619} 620 621static void 622p_rtentry_sysctl(struct rt_msghdr *rtm) 623{ 624 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 625 char buffer[128]; 626 char prettyname[128]; 627 sa_u addr, mask, gw; 628 unsigned int l; 629 630#define GETSA(_s, _f) { \ 631 bzero(&(_s), sizeof(_s)); \ 632 if (rtm->rtm_addrs & _f) { \ 633 l = roundup(sa->sa_len, sizeof(long)); \ 634 memcpy(&(_s), sa, (l > sizeof(_s)) ? sizeof(_s) : l); \ 635 sa = (struct sockaddr *)((char *)sa + l); \ 636 } \ 637} 638 639 GETSA(addr, RTA_DST); 640 GETSA(gw, RTA_GATEWAY); 641 GETSA(mask, RTA_NETMASK); 642 p_sockaddr(&addr.u_sa, &mask.u_sa, rtm->rtm_flags, wid_dst); 643 p_sockaddr(&gw.u_sa, NULL, RTF_HOST, wid_gw); 644 645 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 646 p_flags(rtm->rtm_flags, buffer); 647 if (Wflag) { 648 printf("%*lu ", wid_pksent, rtm->rtm_rmx.rmx_pksent); 649 650 if (rtm->rtm_rmx.rmx_mtu != 0) 651 printf("%*lu ", wid_mtu, rtm->rtm_rmx.rmx_mtu); 652 else 653 printf("%*s ", wid_mtu, ""); 654 } 655 656 memset(prettyname, 0, sizeof(prettyname)); 657 if (rtm->rtm_index < ifmap_size) { 658 strlcpy(prettyname, ifmap[rtm->rtm_index].ifname, 659 sizeof(prettyname)); 660 if (*prettyname == '\0') 661 strlcpy(prettyname, "---", sizeof(prettyname)); 662 } 663 664 printf("%*.*s", wid_if, wid_if, prettyname); 665 if (rtm->rtm_rmx.rmx_expire) { 666 time_t expire_time; 667 668 if ((expire_time = 669 rtm->rtm_rmx.rmx_expire - uptime.tv_sec) > 0) 670 printf(" %*d", wid_expire, (int)expire_time); 671 } 672 673 putchar('\n'); 674} 675 676static void 677p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 678{ 679 const char *cp; 680 681 cp = fmt_sockaddr(sa, mask, flags); 682 683 if (width < 0 ) 684 printf("%s ", cp); 685 else { 686 if (numeric_addr) 687 printf("%-*s ", width, cp); 688 else 689 printf("%-*.*s ", width, width, cp); 690 } 691} 692 693static const char * 694fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 695{ 696 static char workbuf[128]; 697 const char *cp; 698 699 if (sa == NULL) 700 return ("null"); 701 702 switch(sa->sa_family) { 703 case AF_INET: 704 { 705 struct sockaddr_in *sockin = (struct sockaddr_in *)sa; 706 707 if ((sockin->sin_addr.s_addr == INADDR_ANY) && 708 mask && 709 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 710 ==0L) 711 cp = "default" ; 712 else if (flags & RTF_HOST) 713 cp = routename(sockin->sin_addr.s_addr); 714 else if (mask) 715 cp = netname(sockin->sin_addr.s_addr, 716 ((struct sockaddr_in *)mask)->sin_addr.s_addr); 717 else 718 cp = netname(sockin->sin_addr.s_addr, INADDR_ANY); 719 break; 720 } 721 722#ifdef INET6 723 case AF_INET6: 724 { 725 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 726 727 /* 728 * The sa6->sin6_scope_id must be filled here because 729 * this sockaddr is extracted from kmem(4) directly 730 * and has KAME-specific embedded scope id in 731 * sa6->sin6_addr.s6_addr[2]. 732 */ 733 in6_fillscopeid(sa6); 734 735 if (flags & RTF_HOST) 736 cp = routename6(sa6); 737 else if (mask) 738 cp = netname6(sa6, 739 &((struct sockaddr_in6 *)mask)->sin6_addr); 740 else { 741 cp = netname6(sa6, NULL); 742 } 743 break; 744 } 745#endif /*INET6*/ 746 747 case AF_IPX: 748 { 749 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 750 if (ipx_nullnet(satoipx_addr(work))) 751 cp = "default"; 752 else 753 cp = ipx_print(sa); 754 break; 755 } 756 case AF_APPLETALK: 757 { 758 if (!(flags & RTF_HOST) && mask) 759 cp = atalk_print2(sa,mask,9); 760 else 761 cp = atalk_print(sa,11); 762 break; 763 } 764 case AF_NETGRAPH: 765 { 766 strlcpy(workbuf, ((struct sockaddr_ng *)sa)->sg_data, 767 sizeof(workbuf)); 768 cp = workbuf; 769 break; 770 } 771 772 case AF_LINK: 773 { 774 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 775 776 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 777 sdl->sdl_slen == 0) { 778 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 779 cp = workbuf; 780 } else 781 switch (sdl->sdl_type) { 782 783 case IFT_ETHER: 784 case IFT_L2VLAN: 785 case IFT_BRIDGE: 786 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 787 cp = ether_ntoa((struct ether_addr *) 788 (sdl->sdl_data + sdl->sdl_nlen)); 789 break; 790 } 791 /* FALLTHROUGH */ 792 default: 793 cp = link_ntoa(sdl); 794 break; 795 } 796 break; 797 } 798 799 default: 800 { 801 u_char *s = (u_char *)sa->sa_data, *slim; 802 char *cq, *cqlim; 803 804 cq = workbuf; 805 slim = sa->sa_len + (u_char *) sa; 806 cqlim = cq + sizeof(workbuf) - 6; 807 cq += sprintf(cq, "(%d)", sa->sa_family); 808 while (s < slim && cq < cqlim) { 809 cq += sprintf(cq, " %02x", *s++); 810 if (s < slim) 811 cq += sprintf(cq, "%02x", *s++); 812 } 813 cp = workbuf; 814 } 815 } 816 817 return (cp); 818} 819 820static void 821p_flags(int f, const char *format) 822{ 823 printf(format, fmt_flags(f)); 824} 825 826static const char * 827fmt_flags(int f) 828{ 829 static char name[33]; 830 char *flags; 831 struct bits *p = bits; 832 833 for (flags = name; p->b_mask; p++) 834 if (p->b_mask & f) 835 *flags++ = p->b_val; 836 *flags = '\0'; 837 return (name); 838} 839 840static void 841p_rtentry_kvm(struct rtentry *rt) 842{ 843 static struct ifnet ifnet, *lastif; 844 static char buffer[128]; 845 static char prettyname[128]; 846 struct sockaddr *sa; 847 sa_u addr, mask; 848 849 bzero(&addr, sizeof(addr)); 850 if ((sa = kgetsa(rt_key(rt)))) 851 bcopy(sa, &addr, sa->sa_len); 852 bzero(&mask, sizeof(mask)); 853 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 854 bcopy(sa, &mask, sa->sa_len); 855 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst); 856 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); 857 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 858 p_flags(rt->rt_flags, buffer); 859 if (Wflag) { 860 printf("%*ju ", wid_pksent, 861 (uintmax_t )kread_counter((u_long )rt->rt_pksent)); 862 863 if (rt->rt_mtu != 0) 864 printf("%*lu ", wid_mtu, rt->rt_mtu); 865 else 866 printf("%*s ", wid_mtu, ""); 867 } 868 if (rt->rt_ifp) { 869 if (rt->rt_ifp != lastif) { 870 if (kget(rt->rt_ifp, ifnet) == 0) 871 strlcpy(prettyname, ifnet.if_xname, 872 sizeof(prettyname)); 873 else 874 strlcpy(prettyname, "---", sizeof(prettyname)); 875 lastif = rt->rt_ifp; 876 } 877 printf("%*.*s", wid_if, wid_if, prettyname); 878 if (rt->rt_expire) { 879 time_t expire_time; 880 881 if ((expire_time = 882 rt->rt_expire - uptime.tv_sec) > 0) 883 printf(" %*d", wid_expire, (int)expire_time); 884 } 885 if (rt->rt_nodes[0].rn_dupedkey) 886 printf(" =>"); 887 } 888 putchar('\n'); 889} 890 891char * 892routename(in_addr_t in) 893{ 894 char *cp; 895 static char line[MAXHOSTNAMELEN]; 896 struct hostent *hp; 897 898 cp = 0; 899 if (!numeric_addr) { 900 hp = gethostbyaddr(&in, sizeof (struct in_addr), AF_INET); 901 if (hp) { 902 cp = hp->h_name; 903 trimdomain(cp, strlen(cp)); 904 } 905 } 906 if (cp) { 907 strlcpy(line, cp, sizeof(line)); 908 } else { 909#define C(x) ((x) & 0xff) 910 in = ntohl(in); 911 sprintf(line, "%u.%u.%u.%u", 912 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 913 } 914 return (line); 915} 916 917#define NSHIFT(m) ( \ 918 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 919 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 920 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 921 0) 922 923static void 924domask(char *dst, in_addr_t addr __unused, u_long mask) 925{ 926 int b, i; 927 928 if (mask == 0 || (!numeric_addr && NSHIFT(mask) != 0)) { 929 *dst = '\0'; 930 return; 931 } 932 i = 0; 933 for (b = 0; b < 32; b++) 934 if (mask & (1 << b)) { 935 int bb; 936 937 i = b; 938 for (bb = b+1; bb < 32; bb++) 939 if (!(mask & (1 << bb))) { 940 i = -1; /* noncontig */ 941 break; 942 } 943 break; 944 } 945 if (i == -1) 946 sprintf(dst, "&0x%lx", mask); 947 else 948 sprintf(dst, "/%d", 32-i); 949} 950 951/* 952 * Return the name of the network whose address is given. 953 */ 954char * 955netname(in_addr_t in, in_addr_t mask) 956{ 957 char *cp = 0; 958 static char line[MAXHOSTNAMELEN]; 959 struct netent *np = 0; 960 in_addr_t i; 961 962 /* It is ok to supply host address. */ 963 in &= mask; 964 965 i = ntohl(in); 966 if (!numeric_addr && i) { 967 np = getnetbyaddr(i >> NSHIFT(ntohl(mask)), AF_INET); 968 if (np != NULL) { 969 cp = np->n_name; 970 trimdomain(cp, strlen(cp)); 971 } 972 } 973 if (cp != NULL) { 974 strlcpy(line, cp, sizeof(line)); 975 } else { 976 inet_ntop(AF_INET, &in, line, sizeof(line) - 1); 977 } 978 domask(line + strlen(line), i, ntohl(mask)); 979 return (line); 980} 981 982#undef NSHIFT 983 984#ifdef INET6 985void 986in6_fillscopeid(struct sockaddr_in6 *sa6) 987{ 988#if defined(__KAME__) 989 /* 990 * XXX: This is a special workaround for KAME kernels. 991 * sin6_scope_id field of SA should be set in the future. 992 */ 993 if (IN6_IS_ADDR_LINKLOCAL(&sa6->sin6_addr) || 994 IN6_IS_ADDR_MC_NODELOCAL(&sa6->sin6_addr) || 995 IN6_IS_ADDR_MC_LINKLOCAL(&sa6->sin6_addr)) { 996 /* XXX: override is ok? */ 997 sa6->sin6_scope_id = 998 ntohs(*(u_int16_t *)&sa6->sin6_addr.s6_addr[2]); 999 sa6->sin6_addr.s6_addr[2] = sa6->sin6_addr.s6_addr[3] = 0; 1000 } 1001#endif 1002} 1003 1004const char * 1005netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 1006{ 1007 static char line[MAXHOSTNAMELEN]; 1008 u_char *p = (u_char *)mask; 1009 u_char *lim; 1010 int masklen, illegal = 0, flag = 0; 1011 1012 if (mask) { 1013 for (masklen = 0, lim = p + 16; p < lim; p++) { 1014 switch (*p) { 1015 case 0xff: 1016 masklen += 8; 1017 break; 1018 case 0xfe: 1019 masklen += 7; 1020 break; 1021 case 0xfc: 1022 masklen += 6; 1023 break; 1024 case 0xf8: 1025 masklen += 5; 1026 break; 1027 case 0xf0: 1028 masklen += 4; 1029 break; 1030 case 0xe0: 1031 masklen += 3; 1032 break; 1033 case 0xc0: 1034 masklen += 2; 1035 break; 1036 case 0x80: 1037 masklen += 1; 1038 break; 1039 case 0x00: 1040 break; 1041 default: 1042 illegal ++; 1043 break; 1044 } 1045 } 1046 if (illegal) 1047 fprintf(stderr, "illegal prefixlen\n"); 1048 } 1049 else 1050 masklen = 128; 1051 1052 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 1053 return("default"); 1054 1055 if (numeric_addr) 1056 flag |= NI_NUMERICHOST; 1057 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 1058 NULL, 0, flag); 1059 1060 if (numeric_addr) 1061 sprintf(&line[strlen(line)], "/%d", masklen); 1062 1063 return line; 1064} 1065 1066char * 1067routename6(struct sockaddr_in6 *sa6) 1068{ 1069 static char line[MAXHOSTNAMELEN]; 1070 int flag = 0; 1071 /* use local variable for safety */ 1072 struct sockaddr_in6 sa6_local; 1073 1074 sa6_local.sin6_family = AF_INET6; 1075 sa6_local.sin6_len = sizeof(sa6_local); 1076 sa6_local.sin6_addr = sa6->sin6_addr; 1077 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 1078 1079 if (numeric_addr) 1080 flag |= NI_NUMERICHOST; 1081 1082 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 1083 line, sizeof(line), NULL, 0, flag); 1084 1085 return line; 1086} 1087#endif /*INET6*/ 1088 1089/* 1090 * Print routing statistics 1091 */ 1092void 1093rt_stats(void) 1094{ 1095 struct rtstat rtstat; 1096 u_long rtsaddr, rttaddr; 1097 int rttrash; 1098 1099 kresolve_list(rl); 1100 1101 if ((rtsaddr = rl[N_RTSTAT].n_value) == 0) { 1102 printf("rtstat: symbol not in namelist\n"); 1103 return; 1104 } 1105 if ((rttaddr = rl[N_RTTRASH].n_value) == 0) { 1106 printf("rttrash: symbol not in namelist\n"); 1107 return; 1108 } 1109 kread(rtsaddr, (char *)&rtstat, sizeof (rtstat)); 1110 kread(rttaddr, (char *)&rttrash, sizeof (rttrash)); 1111 printf("routing:\n"); 1112 1113#define p(f, m) if (rtstat.f || sflag <= 1) \ 1114 printf(m, rtstat.f, plural(rtstat.f)) 1115 1116 p(rts_badredirect, "\t%hu bad routing redirect%s\n"); 1117 p(rts_dynamic, "\t%hu dynamically created route%s\n"); 1118 p(rts_newgateway, "\t%hu new gateway%s due to redirects\n"); 1119 p(rts_unreach, "\t%hu destination%s found unreachable\n"); 1120 p(rts_wildcard, "\t%hu use%s of a wildcard route\n"); 1121#undef p 1122 1123 if (rttrash || sflag <= 1) 1124 printf("\t%u route%s not in table but not freed\n", 1125 rttrash, plural(rttrash)); 1126} 1127 1128char * 1129ipx_print(struct sockaddr *sa) 1130{ 1131 u_short port; 1132 struct servent *sp = 0; 1133 const char *net = "", *host = ""; 1134 char *p; 1135 u_char *q; 1136 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 1137 static char mybuf[50]; 1138 char cport[10], chost[15], cnet[15]; 1139 1140 port = ntohs(work.x_port); 1141 1142 if (ipx_nullnet(work) && ipx_nullhost(work)) { 1143 1144 if (port) { 1145 if (sp) 1146 sprintf(mybuf, "*.%s", sp->s_name); 1147 else 1148 sprintf(mybuf, "*.%x", port); 1149 } else 1150 sprintf(mybuf, "*.*"); 1151 1152 return (mybuf); 1153 } 1154 1155 if (ipx_wildnet(work)) 1156 net = "any"; 1157 else if (ipx_nullnet(work)) 1158 net = "*"; 1159 else { 1160 q = work.x_net.c_net; 1161 sprintf(cnet, "%02x%02x%02x%02x", 1162 q[0], q[1], q[2], q[3]); 1163 for (p = cnet; *p == '0' && p < cnet + 8; p++) 1164 continue; 1165 net = p; 1166 } 1167 1168 if (ipx_wildhost(work)) 1169 host = "any"; 1170 else if (ipx_nullhost(work)) 1171 host = "*"; 1172 else { 1173 q = work.x_host.c_host; 1174 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 1175 q[0], q[1], q[2], q[3], q[4], q[5]); 1176 for (p = chost; *p == '0' && p < chost + 12; p++) 1177 continue; 1178 host = p; 1179 } 1180 1181 if (port) { 1182 if (strcmp(host, "*") == 0) 1183 host = ""; 1184 if (sp) 1185 snprintf(cport, sizeof(cport), 1186 "%s%s", *host ? "." : "", sp->s_name); 1187 else 1188 snprintf(cport, sizeof(cport), 1189 "%s%x", *host ? "." : "", port); 1190 } else 1191 *cport = 0; 1192 1193 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 1194 return(mybuf); 1195} 1196 1197char * 1198ipx_phost(struct sockaddr *sa) 1199{ 1200 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 1201 struct sockaddr_ipx work; 1202 static union ipx_net ipx_zeronet; 1203 char *p; 1204 1205 work = *sipx; 1206 1207 work.sipx_addr.x_port = 0; 1208 work.sipx_addr.x_net = ipx_zeronet; 1209 p = ipx_print((struct sockaddr *)&work); 1210 if (strncmp("*.", p, 2) == 0) p += 2; 1211 1212 return(p); 1213} 1214 1215void 1216upHex(char *p0) 1217{ 1218 char *p = p0; 1219 1220 for (; *p; p++) 1221 switch (*p) { 1222 1223 case 'a': 1224 case 'b': 1225 case 'c': 1226 case 'd': 1227 case 'e': 1228 case 'f': 1229 *p += ('A' - 'a'); 1230 break; 1231 } 1232} 1233