Annotation of src/usr.bin/netstat/route.c, Revision 1.80
1.80 ! claudio 1: /* $OpenBSD: route.c,v 1.79 2008/06/13 05:57:50 claudio Exp $ */
1.2 deraadt 2: /* $NetBSD: route.c,v 1.15 1996/05/07 02:55:06 thorpej Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1983, 1988, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.53 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #include <sys/param.h>
34: #include <sys/protosw.h>
35: #include <sys/socket.h>
36: #include <sys/mbuf.h>
37:
38: #include <net/if.h>
39: #include <net/if_dl.h>
40: #include <net/if_types.h>
41: #define _KERNEL
42: #include <net/route.h>
43: #undef _KERNEL
44: #include <netinet/in.h>
1.13 millert 45: #include <arpa/inet.h>
1.1 deraadt 46:
47: #include <sys/sysctl.h>
48:
1.61 otto 49: #include <err.h>
1.15 millert 50: #include <limits.h>
1.1 deraadt 51: #include <netdb.h>
52: #include <stdio.h>
53: #include <stdlib.h>
54: #include <string.h>
55: #include <unistd.h>
1.9 angelos 56:
57: #ifndef INET
58: #define INET
59: #endif
60:
1.26 angelos 61: #include <netinet/ip_ipsp.h>
1.1 deraadt 62: #include "netstat.h"
63:
1.67 jaredy 64: #define kget(p, d) (kread((u_long)(p), &(d), sizeof (d)))
1.1 deraadt 65:
1.29 deraadt 66: /* alignment constraint for routing socket */
67: #define ROUNDUP(a) \
68: ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
69: #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
1.51 jason 70:
1.73 claudio 71: struct radix_node_head ***rt_head;
1.80 ! claudio 72: struct radix_node_head ***rnt;
1.73 claudio 73: struct radix_node_head *rt_tables[AF_MAX+1]; /* provides enough space */
74: u_int8_t af2rtafidx[AF_MAX+1];
1.29 deraadt 75:
1.1 deraadt 76: static union {
1.6 deraadt 77: struct sockaddr u_sa;
78: u_int32_t u_data[64];
1.29 deraadt 79: int u_dummy; /* force word-alignment */
1.1 deraadt 80: } pt_u;
81:
82: int do_rtent = 0;
83: struct rtentry rtentry;
84: struct radix_node rnode;
85: struct radix_mask rmask;
86:
1.45 millert 87: static struct sockaddr *kgetsa(struct sockaddr *);
88: static void p_tree(struct radix_node *);
1.54 deraadt 89: static void p_rtnode(void);
1.49 deraadt 90: static void p_rtflags(u_char);
1.72 claudio 91: static void p_krtentry(struct rtentry *);
1.45 millert 92: static void encap_print(struct rtentry *);
1.1 deraadt 93:
94: /*
95: * Print routing tables.
96: */
97: void
1.73 claudio 98: routepr(u_long rtree, u_long mtree, u_long af2idx, u_long rtbl_id_max)
1.1 deraadt 99: {
100: struct radix_node_head *rnh, head;
1.73 claudio 101: int i, idxmax = 0;
102: u_int rtidxmax;
1.1 deraadt 103:
104: printf("Routing tables\n");
105:
1.73 claudio 106: if (rtree == 0 || af2idx == 0) {
1.72 claudio 107: printf("rt_tables: symbol not in namelist\n");
108: return;
109: }
1.1 deraadt 110:
1.73 claudio 111: kget(rtree, rt_head);
112: kget(rtbl_id_max, rtidxmax);
113: kget(af2idx, af2rtafidx);
114:
115: for (i = 0; i <= AF_MAX; i++) {
116: if (af2rtafidx[i] > idxmax)
117: idxmax = af2rtafidx[i];
118: }
119:
120: if ((rnt = calloc(rtidxmax + 1, sizeof(struct radix_node_head **))) ==
121: NULL)
122: err(1, NULL);
123:
124: kread((u_long)rt_head, rnt, (rtidxmax + 1) *
125: sizeof(struct radix_node_head **));
126: kread((u_long)rnt[0], rt_tables, (idxmax + 1) * sizeof(rnh));
127:
1.72 claudio 128: for (i = 0; i <= AF_MAX; i++) {
129: if (i == AF_UNSPEC) {
1.73 claudio 130: if (Aflag && (af == AF_UNSPEC || af == 0xff)) {
131: kget(mtree, rnh);
132: kget(rnh, head);
1.72 claudio 133: printf("Netmasks:\n");
1.1 deraadt 134: p_tree(head.rnh_treetop);
135: }
1.73 claudio 136: continue;
137: }
138: if (af2rtafidx[i] == 0)
139: /* no table for this AF */
140: continue;
141: if ((rnh = rt_tables[af2rtafidx[i]]) == 0)
142: continue;
143: kget(rnh, head);
144: if (af == AF_UNSPEC || af == i) {
1.72 claudio 145: pr_family(i);
146: do_rtent = 1;
147: pr_rthdr(i, Aflag);
148: p_tree(head.rnh_treetop);
1.1 deraadt 149: }
150: }
151: }
152:
153: static struct sockaddr *
1.50 deraadt 154: kgetsa(struct sockaddr *dst)
1.1 deraadt 155: {
156:
157: kget(dst, pt_u.u_sa);
158: if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa))
1.67 jaredy 159: kread((u_long)dst, pt_u.u_data, pt_u.u_sa.sa_len);
1.1 deraadt 160: return (&pt_u.u_sa);
161: }
162:
163: static void
1.50 deraadt 164: p_tree(struct radix_node *rn)
1.1 deraadt 165: {
166:
167: again:
168: kget(rn, rnode);
169: if (rnode.rn_b < 0) {
170: if (Aflag)
1.14 millert 171: printf("%-16p ", rn);
1.1 deraadt 172: if (rnode.rn_flags & RNF_ROOT) {
173: if (Aflag)
174: printf("(root node)%s",
175: rnode.rn_dupedkey ? " =>\n" : "\n");
176: } else if (do_rtent) {
177: kget(rn, rtentry);
1.72 claudio 178: p_krtentry(&rtentry);
1.1 deraadt 179: if (Aflag)
180: p_rtnode();
181: } else {
182: p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key),
1.21 peter 183: 0, 0, 44);
1.1 deraadt 184: putchar('\n');
185: }
1.13 millert 186: if ((rn = rnode.rn_dupedkey))
1.1 deraadt 187: goto again;
188: } else {
189: if (Aflag && do_rtent) {
1.14 millert 190: printf("%-16p ", rn);
1.1 deraadt 191: p_rtnode();
192: }
193: rn = rnode.rn_r;
194: p_tree(rnode.rn_l);
195: p_tree(rn);
196: }
197: }
198:
1.49 deraadt 199: static void
200: p_rtflags(u_char flags)
201: {
202: putchar('<');
203: if (flags & RNF_NORMAL)
204: putchar('N');
205: if (flags & RNF_ROOT)
206: putchar('R');
207: if (flags & RNF_ACTIVE)
208: putchar('A');
1.56 henric 209: if (flags & ~(RNF_NORMAL | RNF_ROOT | RNF_ACTIVE))
1.49 deraadt 210: printf("/0x%02x", flags);
211: putchar('>');
212: }
213:
1.23 deraadt 214: char nbuf[25];
1.1 deraadt 215:
216: static void
1.50 deraadt 217: p_rtnode(void)
1.1 deraadt 218: {
219: struct radix_mask *rm = rnode.rn_mklist;
220:
221: if (rnode.rn_b < 0) {
222: if (rnode.rn_mask) {
223: printf("\t mask ");
224: p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask),
1.21 peter 225: 0, 0, -1);
1.1 deraadt 226: } else if (rm == 0)
227: return;
228: } else {
1.23 deraadt 229: snprintf(nbuf, sizeof nbuf, "(%d)", rnode.rn_b);
1.14 millert 230: printf("%6.6s %16p : %16p", nbuf, rnode.rn_l,
231: rnode.rn_r);
1.1 deraadt 232: }
1.49 deraadt 233:
234: putchar(' ');
235: p_rtflags(rnode.rn_flags);
236:
1.1 deraadt 237: while (rm) {
238: kget(rm, rmask);
1.23 deraadt 239: snprintf(nbuf, sizeof nbuf, " %d refs, ", rmask.rm_refs);
1.14 millert 240: printf(" mk = %16p {(%d),%s",
1.46 deraadt 241: rm, -1 - rmask.rm_b, rmask.rm_refs ? nbuf : " ");
1.49 deraadt 242: p_rtflags(rmask.rm_flags);
243: printf(", ");
244: if (rmask.rm_flags & RNF_NORMAL) {
245: struct radix_node rnode_aux;
246:
247: printf("leaf = %p ", rmask.rm_leaf);
248: kget(rmask.rm_leaf, rnode_aux);
249: p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask),
250: 0, 0, -1);
251: } else
252: p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask),
253: 0, 0, -1);
1.1 deraadt 254: putchar('}');
1.13 millert 255: if ((rm = rmask.rm_mklist))
1.1 deraadt 256: printf(" ->");
257: }
258: putchar('\n');
259: }
260:
261: static void
1.72 claudio 262: p_krtentry(struct rtentry *rt)
1.1 deraadt 263: {
264: static struct ifnet ifnet, *lastif;
1.30 itojun 265: struct sockaddr_storage sock1, sock2;
266: struct sockaddr *sa = (struct sockaddr *)&sock1;
267: struct sockaddr *mask = (struct sockaddr *)&sock2;
1.46 deraadt 268:
1.21 peter 269: bcopy(kgetsa(rt_key(rt)), sa, sizeof(struct sockaddr));
1.30 itojun 270: if (sa->sa_len > sizeof(struct sockaddr))
271: bcopy(kgetsa(rt_key(rt)), sa, sa->sa_len);
1.21 peter 272:
1.26 angelos 273: if (sa->sa_family == PF_KEY) {
1.10 deraadt 274: encap_print(rt);
275: return;
1.9 angelos 276: }
1.21 peter 277:
1.30 itojun 278: if (rt_mask(rt)) {
1.21 peter 279: bcopy(kgetsa(rt_mask(rt)), mask, sizeof(struct sockaddr));
1.30 itojun 280: if (sa->sa_len > sizeof(struct sockaddr))
281: bcopy(kgetsa(rt_mask(rt)), mask, sa->sa_len);
282: } else
1.21 peter 283: mask = 0;
1.46 deraadt 284:
1.72 claudio 285: p_addr(sa, mask, rt->rt_flags);
286: p_gwaddr(kgetsa(rt->rt_gateway), sa->sa_family);
1.1 deraadt 287: p_flags(rt->rt_flags, "%-6.6s ");
1.79 claudio 288: printf("%5u %8ld ", rt->rt_refcnt, rt->rt_use);
1.1 deraadt 289: if (rt->rt_rmx.rmx_mtu)
1.79 claudio 290: printf("%5u ", rt->rt_rmx.rmx_mtu);
1.1 deraadt 291: else
1.79 claudio 292: printf("%5s ", "-");
1.39 provos 293: putchar((rt->rt_rmx.rmx_locks & RTV_MTU) ? 'L' : ' ');
1.79 claudio 294: printf(" %2d", rt->rt_priority);
1.72 claudio 295:
1.1 deraadt 296: if (rt->rt_ifp) {
297: if (rt->rt_ifp != lastif) {
298: kget(rt->rt_ifp, ifnet);
299: lastif = rt->rt_ifp;
300: }
1.2 deraadt 301: printf(" %.16s%s", ifnet.if_xname,
1.50 deraadt 302: rt->rt_nodes[0].rn_dupedkey ? " =>" : "");
1.1 deraadt 303: }
304: putchar('\n');
1.63 claudio 305: if (vflag)
1.75 claudio 306: printf("\texpire %10u%c\n",
1.46 deraadt 307: rt->rt_rmx.rmx_expire,
1.63 claudio 308: (rt->rt_rmx.rmx_locks & RTV_EXPIRE) ? 'L' : ' ');
1.1 deraadt 309: }
310:
311: /*
312: * Print routing statistics
313: */
314: void
1.78 claudio 315: rt_stats(void)
1.1 deraadt 316: {
317: struct rtstat rtstat;
1.72 claudio 318: int mib[6];
319: size_t size;
1.76 deraadt 320:
1.78 claudio 321: mib[0] = CTL_NET;
322: mib[1] = PF_ROUTE;
323: mib[2] = 0;
324: mib[3] = 0;
325: mib[4] = NET_RT_STATS;
326: mib[5] = 0;
327: size = sizeof (rtstat);
328:
329: if (sysctl(mib, 6, &rtstat, &size, NULL, 0) < 0) {
330: perror("sysctl of routing table statistics");
331: exit(1);
332: }
1.72 claudio 333:
1.1 deraadt 334: printf("routing:\n");
335: printf("\t%u bad routing redirect%s\n",
1.46 deraadt 336: rtstat.rts_badredirect, plural(rtstat.rts_badredirect));
1.1 deraadt 337: printf("\t%u dynamically created route%s\n",
1.46 deraadt 338: rtstat.rts_dynamic, plural(rtstat.rts_dynamic));
1.1 deraadt 339: printf("\t%u new gateway%s due to redirects\n",
1.46 deraadt 340: rtstat.rts_newgateway, plural(rtstat.rts_newgateway));
1.1 deraadt 341: printf("\t%u destination%s found unreachable\n",
1.46 deraadt 342: rtstat.rts_unreach, plural(rtstat.rts_unreach));
1.1 deraadt 343: printf("\t%u use%s of a wildcard route\n",
1.46 deraadt 344: rtstat.rts_wildcard, plural(rtstat.rts_wildcard));
1.5 mickey 345: }
346:
1.9 angelos 347: static void
1.50 deraadt 348: encap_print(struct rtentry *rt)
1.9 angelos 349: {
1.10 deraadt 350: struct sockaddr_encap sen1, sen2, sen3;
1.44 mickey 351: struct ipsec_policy ipo;
1.31 angelos 352: struct sockaddr_in6 s61, s62;
1.9 angelos 353:
354: bcopy(kgetsa(rt_key(rt)), &sen1, sizeof(sen1));
355: bcopy(kgetsa(rt_mask(rt)), &sen2, sizeof(sen2));
356: bcopy(kgetsa(rt->rt_gateway), &sen3, sizeof(sen3));
357:
1.46 deraadt 358: if (sen1.sen_type == SENT_IP4) {
1.72 claudio 359: printf("%-18s %-5u ", netname4(sen1.sen_ip_src.s_addr,
1.46 deraadt 360: sen2.sen_ip_src.s_addr), ntohs(sen1.sen_sport));
1.72 claudio 361: printf("%-18s %-5u %-5u ", netname4(sen1.sen_ip_dst.s_addr,
1.46 deraadt 362: sen2.sen_ip_dst.s_addr),
363: ntohs(sen1.sen_dport), sen1.sen_proto);
1.31 angelos 364: }
365:
1.46 deraadt 366: if (sen1.sen_type == SENT_IP6) {
367: bzero(&s61, sizeof(s61));
368: bzero(&s62, sizeof(s62));
369: s61.sin6_family = s62.sin6_family = AF_INET6;
370: s61.sin6_len = s62.sin6_len = sizeof(s61);
371: bcopy(&sen1.sen_ip6_src, &s61.sin6_addr, sizeof(struct in6_addr));
1.57 itojun 372: #ifdef __KAME__
373: if (IN6_IS_ADDR_LINKLOCAL(&s61.sin6_addr) ||
1.74 itojun 374: IN6_IS_ADDR_MC_LINKLOCAL(&s61.sin6_addr) ||
375: IN6_IS_ADDR_MC_INTFACELOCAL(&s61.sin6_addr)) {
1.57 itojun 376: s61.sin6_scope_id =
377: ((u_int16_t)s61.sin6_addr.s6_addr[2] << 8) |
378: s61.sin6_addr.s6_addr[3];
379: s61.sin6_addr.s6_addr[2] = s61.sin6_addr.s6_addr[3] = 0;
380: }
381: #endif
1.46 deraadt 382: bcopy(&sen2.sen_ip6_src, &s62.sin6_addr, sizeof(struct in6_addr));
1.57 itojun 383: #ifdef __KAME__
384: if (IN6_IS_ADDR_LINKLOCAL(&s62.sin6_addr) ||
1.74 itojun 385: IN6_IS_ADDR_MC_LINKLOCAL(&s62.sin6_addr) ||
386: IN6_IS_ADDR_MC_INTFACELOCAL(&s62.sin6_addr)) {
1.57 itojun 387: s62.sin6_scope_id =
388: ((u_int16_t)s62.sin6_addr.s6_addr[2] << 8) |
389: s62.sin6_addr.s6_addr[3];
390: s62.sin6_addr.s6_addr[2] = s62.sin6_addr.s6_addr[3] = 0;
391: }
392: #endif
1.46 deraadt 393:
1.72 claudio 394: printf("%-42s %-5u ", netname6(&s61, &s62),
1.46 deraadt 395: ntohs(sen1.sen_ip6_sport));
396:
397: bzero(&s61, sizeof(s61));
398: bzero(&s62, sizeof(s62));
399: s61.sin6_family = s62.sin6_family = AF_INET6;
400: s61.sin6_len = s62.sin6_len = sizeof(s61);
401: bcopy(&sen1.sen_ip6_dst, &s61.sin6_addr, sizeof(struct in6_addr));
1.57 itojun 402: #ifdef __KAME__
403: if (IN6_IS_ADDR_LINKLOCAL(&s61.sin6_addr) ||
1.74 itojun 404: IN6_IS_ADDR_MC_LINKLOCAL(&s61.sin6_addr) ||
405: IN6_IS_ADDR_MC_INTFACELOCAL(&s61.sin6_addr)) {
1.57 itojun 406: s61.sin6_scope_id =
407: ((u_int16_t)s61.sin6_addr.s6_addr[2] << 8) |
408: s61.sin6_addr.s6_addr[3];
409: s61.sin6_addr.s6_addr[2] = s61.sin6_addr.s6_addr[3] = 0;
410: }
411: #endif
1.46 deraadt 412: bcopy(&sen2.sen_ip6_dst, &s62.sin6_addr, sizeof(struct in6_addr));
1.57 itojun 413: #ifdef __KAME__
414: if (IN6_IS_ADDR_LINKLOCAL(&s62.sin6_addr) ||
1.74 itojun 415: IN6_IS_ADDR_MC_LINKLOCAL(&s62.sin6_addr) ||
416: IN6_IS_ADDR_MC_INTFACELOCAL(&s62.sin6_addr)) {
1.57 itojun 417: s62.sin6_scope_id =
418: ((u_int16_t)s62.sin6_addr.s6_addr[2] << 8) |
419: s62.sin6_addr.s6_addr[3];
420: s62.sin6_addr.s6_addr[2] = s62.sin6_addr.s6_addr[3] = 0;
421: }
422: #endif
1.31 angelos 423:
1.72 claudio 424: printf("%-42s %-5u %-5u ", netname6(&s61, &s62),
1.46 deraadt 425: ntohs(sen1.sen_ip6_dport), sen1.sen_ip6_proto);
1.31 angelos 426: }
427:
1.46 deraadt 428: if (sen3.sen_type == SENT_IPSP) {
429: char hostn[NI_MAXHOST];
1.31 angelos 430:
1.46 deraadt 431: kget(sen3.sen_ipsp, ipo);
1.38 angelos 432:
1.48 ho 433: if (getnameinfo(&ipo.ipo_dst.sa, ipo.ipo_dst.sa.sa_len,
434: hostn, NI_MAXHOST, NULL, 0, NI_NUMERICHOST) != 0)
435: strlcpy (hostn, "none", NI_MAXHOST);
436:
1.46 deraadt 437: printf("%s", hostn);
438: printf("/%-u", ipo.ipo_sproto);
1.44 mickey 439:
1.46 deraadt 440: switch (ipo.ipo_type) {
1.44 mickey 441: case IPSP_IPSEC_REQUIRE:
1.46 deraadt 442: printf("/require");
443: break;
1.44 mickey 444: case IPSP_IPSEC_ACQUIRE:
1.46 deraadt 445: printf("/acquire");
446: break;
1.44 mickey 447: case IPSP_IPSEC_USE:
1.46 deraadt 448: printf("/use");
449: break;
1.44 mickey 450: case IPSP_IPSEC_DONTACQ:
1.46 deraadt 451: printf("/dontacq");
452: break;
1.44 mickey 453: case IPSP_PERMIT:
1.71 hshoexer 454: printf("/bypass");
1.46 deraadt 455: break;
1.44 mickey 456: case IPSP_DENY:
1.46 deraadt 457: printf("/deny");
458: break;
1.44 mickey 459: default:
1.46 deraadt 460: printf("/<unknown type!>");
461: break;
462: }
1.44 mickey 463:
1.46 deraadt 464: if ((ipo.ipo_addr.sen_type == SENT_IP4 &&
465: ipo.ipo_addr.sen_direction == IPSP_DIRECTION_IN) ||
466: (ipo.ipo_addr.sen_type == SENT_IP6 &&
467: ipo.ipo_addr.sen_ip6_direction == IPSP_DIRECTION_IN))
468: printf("/in\n");
469: else if ((ipo.ipo_addr.sen_type == SENT_IP4 &&
470: ipo.ipo_addr.sen_direction == IPSP_DIRECTION_OUT) ||
471: (ipo.ipo_addr.sen_type == SENT_IP6 &&
472: ipo.ipo_addr.sen_ip6_direction == IPSP_DIRECTION_OUT))
473: printf("/out\n");
474: else
475: printf("/<unknown>\n");
1.1 deraadt 476: }
477: }
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