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1.31 ! chl 1: /* $OpenBSD: show.c,v 1.30 2010/03/23 16:26:01 claudio Exp $ */
1.1 claudio 2: /* $NetBSD: show.c,v 1.1 1996/11/15 18:01:41 gwr Exp $ */
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.
16: * 3. Neither the name of the University nor the names of its contributors
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: #include <sys/sysctl.h>
38:
39: #include <net/if.h>
40: #include <net/if_dl.h>
41: #include <net/if_types.h>
42: #include <net/pfkeyv2.h>
43: #include <net/route.h>
44: #include <netinet/in.h>
45: #include <netinet/if_ether.h>
46: #include <netinet/ip_ipsp.h>
1.13 claudio 47: #include <netmpls/mpls.h>
1.1 claudio 48: #include <arpa/inet.h>
49:
50: #include <err.h>
51: #include <errno.h>
52: #include <netdb.h>
53: #include <stdio.h>
54: #include <stddef.h>
55: #include <stdlib.h>
56: #include <string.h>
57: #include <unistd.h>
58:
59: #include "netstat.h"
60:
61: char *any_ntoa(const struct sockaddr *);
62: char *link_print(struct sockaddr *);
1.30 claudio 63: char *label_print(struct sockaddr *);
1.1 claudio 64:
65: #define ROUNDUP(a) \
66: ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
67: #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
68:
69: #define PFKEYV2_CHUNK sizeof(u_int64_t)
70:
71: /*
72: * Definitions for showing gateway flags.
73: */
74: struct bits {
75: int b_mask;
76: char b_val;
77: };
78: static const struct bits bits[] = {
79: { RTF_UP, 'U' },
80: { RTF_GATEWAY, 'G' },
81: { RTF_HOST, 'H' },
82: { RTF_REJECT, 'R' },
83: { RTF_BLACKHOLE, 'B' },
84: { RTF_DYNAMIC, 'D' },
85: { RTF_MODIFIED, 'M' },
86: { RTF_DONE, 'd' }, /* Completed -- for routing messages only */
87: { RTF_MASK, 'm' }, /* Mask Present -- for routing messages only */
88: { RTF_CLONING, 'C' },
89: { RTF_XRESOLVE, 'X' },
90: { RTF_LLINFO, 'L' },
91: { RTF_STATIC, 'S' },
92: { RTF_PROTO1, '1' },
93: { RTF_PROTO2, '2' },
94: { RTF_PROTO3, '3' },
95: { RTF_CLONED, 'c' },
96: { RTF_JUMBO, 'J' },
1.18 claudio 97: { RTF_MPATH, 'P' },
1.25 michele 98: { RTF_MPLS, 'T' },
1.1 claudio 99: { 0 }
100: };
101:
102: void p_rtentry(struct rt_msghdr *);
103: void p_pfkentry(struct sadb_msg *);
104: void pr_family(int);
105: void p_encap(struct sockaddr *, struct sockaddr *, int);
106: void p_protocol(struct sadb_protocol *, struct sockaddr *, struct
1.13 claudio 107: sadb_protocol *, int);
1.1 claudio 108: void p_sockaddr(struct sockaddr *, struct sockaddr *, int, int);
1.17 michele 109: void p_sockaddr_mpls(struct sockaddr *, struct sockaddr *, int, int);
1.1 claudio 110: void p_flags(int, char *);
111: char *routename4(in_addr_t);
112: char *routename6(struct sockaddr_in6 *);
113: void index_pfk(struct sadb_msg *, void **);
114:
115: /*
116: * Print routing tables.
117: */
118: void
1.10 claudio 119: p_rttables(int af, u_int tableid)
1.1 claudio 120: {
121: struct rt_msghdr *rtm;
122: struct sadb_msg *msg;
123: char *buf = NULL, *next, *lim = NULL;
124: size_t needed;
1.10 claudio 125: int mib[7];
1.1 claudio 126: struct sockaddr *sa;
127:
128: mib[0] = CTL_NET;
129: mib[1] = PF_ROUTE;
130: mib[2] = 0;
131: mib[3] = af;
132: mib[4] = NET_RT_DUMP;
133: mib[5] = 0;
1.10 claudio 134: mib[6] = tableid;
135:
136: if (sysctl(mib, 7, NULL, &needed, NULL, 0) < 0)
1.1 claudio 137: err(1, "route-sysctl-estimate");
138: if (needed > 0) {
139: if ((buf = malloc(needed)) == 0)
140: err(1, NULL);
1.10 claudio 141: if (sysctl(mib, 7, buf, &needed, NULL, 0) < 0)
1.1 claudio 142: err(1, "sysctl of routing table");
143: lim = buf + needed;
144: }
145:
146: printf("Routing tables\n");
147:
148: if (buf) {
149: for (next = buf; next < lim; next += rtm->rtm_msglen) {
150: rtm = (struct rt_msghdr *)next;
1.8 claudio 151: if (rtm->rtm_version != RTM_VERSION)
152: continue;
1.23 chris 153: sa = (struct sockaddr *)(next + rtm->rtm_hdrlen);
1.1 claudio 154: if (af != AF_UNSPEC && sa->sa_family != af)
155: continue;
156: p_rtentry(rtm);
157: }
158: free(buf);
159: buf = NULL;
160: }
161:
162: if (af != 0 && af != PF_KEY)
163: return;
164:
165: mib[0] = CTL_NET;
166: mib[1] = PF_KEY;
167: mib[2] = PF_KEY_V2;
168: mib[3] = NET_KEY_SPD_DUMP;
169: mib[4] = mib[5] = 0;
170:
171: if (sysctl(mib, 4, NULL, &needed, NULL, 0) == -1) {
172: if (errno == ENOPROTOOPT)
173: return;
174: err(1, "spd-sysctl-estimate");
175: }
176: if (needed > 0) {
177: if ((buf = malloc(needed)) == 0)
178: err(1, NULL);
179: if (sysctl(mib, 4, buf, &needed, NULL, 0) == -1)
180: err(1,"sysctl of spd");
181: lim = buf + needed;
182: }
183:
184: if (buf) {
185: printf("\nEncap:\n");
186:
187: for (next = buf; next < lim; next += msg->sadb_msg_len *
188: PFKEYV2_CHUNK) {
189: msg = (struct sadb_msg *)next;
190: if (msg->sadb_msg_len == 0)
191: break;
192: p_pfkentry(msg);
193: }
194: free(buf);
195: buf = NULL;
196: }
197: }
198:
1.12 deraadt 199: /*
1.1 claudio 200: * column widths; each followed by one space
201: * width of destination/gateway column
202: * strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4
203: */
204: #define WID_GW(af) ((af) == AF_INET6 ? (nflag ? 30 : 18) : 18)
205:
1.13 claudio 206: int
207: WID_DST(int af)
208: {
209:
210: if (nflag)
211: switch (af) {
212: case AF_MPLS:
1.30 claudio 213: return 9;
1.13 claudio 214: case AF_INET6:
215: return 34;
216: default:
217: return 18;
218: }
219: else
220: switch (af) {
221: case AF_MPLS:
1.30 claudio 222: return 9;
1.13 claudio 223: default:
224: return 18;
225: }
226: }
227:
1.1 claudio 228: /*
229: * Print header for routing table columns.
230: */
231: void
232: pr_rthdr(int af, int Aflag)
233: {
234: if (Aflag)
235: printf("%-*.*s ", PLEN, PLEN, "Address");
1.13 claudio 236: switch (af) {
237: case PF_KEY:
1.1 claudio 238: printf("%-18s %-5s %-18s %-5s %-5s %-22s\n",
239: "Source", "Port", "Destination",
240: "Port", "Proto", "SA(Address/Proto/Type/Direction)");
1.13 claudio 241: break;
242: case PF_MPLS:
1.30 claudio 243: printf("%-9s %-9s %-6s %-18s %-6.6s %5.5s %8.8s %5.5s %4.4s %s\n",
1.13 claudio 244: "In label", "Out label", "Op", "Gateway",
245: "Flags", "Refs", "Use", "Mtu", "Prio", "Interface");
246: break;
247: default:
248: printf("%-*.*s %-*.*s %-6.6s %5.5s %8.8s %5.5s %4.4s %s\n",
249: WID_DST(af), WID_DST(af), "Destination",
250: WID_GW(af), WID_GW(af), "Gateway",
251: "Flags", "Refs", "Use", "Mtu", "Prio", "Iface");
252: break;
253: }
1.1 claudio 254: }
255:
256: static void
257: get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info)
258: {
259: int i;
260:
261: for (i = 0; i < RTAX_MAX; i++) {
262: if (addrs & (1 << i)) {
263: rti_info[i] = sa;
264: sa = (struct sockaddr *)((char *)(sa) +
265: ROUNDUP(sa->sa_len));
266: } else
267: rti_info[i] = NULL;
268: }
269: }
270:
271: /*
272: * Print a routing table entry.
273: */
274: void
275: p_rtentry(struct rt_msghdr *rtm)
276: {
277: static int old_af = -1;
1.22 chris 278: struct sockaddr *sa = (struct sockaddr *)((char *)rtm + rtm->rtm_hdrlen);
1.1 claudio 279: struct sockaddr *mask, *rti_info[RTAX_MAX];
280: char ifbuf[IF_NAMESIZE];
281:
282: if (sa->sa_family == AF_KEY)
283: return;
284:
1.5 pyr 285: get_rtaddrs(rtm->rtm_addrs, sa, rti_info);
286: if (Fflag && rti_info[RTAX_GATEWAY]->sa_family != sa->sa_family) {
287: return;
288: }
1.1 claudio 289: if (old_af != sa->sa_family) {
290: old_af = sa->sa_family;
291: pr_family(sa->sa_family);
292: pr_rthdr(sa->sa_family, 0);
293: }
294:
295: mask = rti_info[RTAX_NETMASK];
296: if ((sa = rti_info[RTAX_DST]) == NULL)
297: return;
298:
299: p_sockaddr(sa, mask, rtm->rtm_flags, WID_DST(sa->sa_family));
1.19 michele 300: p_sockaddr_mpls(sa, rti_info[RTAX_SRC], rtm->rtm_mpls,
1.17 michele 301: WID_DST(sa->sa_family));
302:
1.1 claudio 303: p_sockaddr(rti_info[RTAX_GATEWAY], NULL, RTF_HOST,
304: WID_GW(sa->sa_family));
1.30 claudio 305:
1.1 claudio 306: p_flags(rtm->rtm_flags, "%-6.6s ");
1.13 claudio 307: printf("%5u %8llu ", rtm->rtm_rmx.rmx_refcnt,
1.1 claudio 308: rtm->rtm_rmx.rmx_pksent);
309: if (rtm->rtm_rmx.rmx_mtu)
1.13 claudio 310: printf("%5u ", rtm->rtm_rmx.rmx_mtu);
1.1 claudio 311: else
1.13 claudio 312: printf("%5s ", "-");
1.1 claudio 313: putchar((rtm->rtm_rmx.rmx_locks & RTV_MTU) ? 'L' : ' ');
1.24 claudio 314: printf(" %2d %.16s", rtm->rtm_priority,
1.13 claudio 315: if_indextoname(rtm->rtm_index, ifbuf));
1.1 claudio 316: putchar('\n');
317: }
318:
319: /*
320: * Print a pfkey/encap entry.
321: */
322: void
323: p_pfkentry(struct sadb_msg *msg)
324: {
1.13 claudio 325: static int old = 0;
1.1 claudio 326: struct sadb_address *saddr;
327: struct sadb_protocol *sap, *saft;
328: struct sockaddr *sa, *mask;
329: void *headers[SADB_EXT_MAX + 1];
330:
331: if (!old) {
332: pr_rthdr(PF_KEY, 0);
333: old++;
334: }
335:
336: bzero(headers, sizeof(headers));
337: index_pfk(msg, headers);
338:
339: /* These are always set */
340: saddr = headers[SADB_X_EXT_SRC_FLOW];
341: sa = (struct sockaddr *)(saddr + 1);
342: saddr = headers[SADB_X_EXT_SRC_MASK];
343: mask = (struct sockaddr *)(saddr + 1);
344: p_encap(sa, mask, WID_DST(sa->sa_family));
345:
346: /* These are always set, too. */
347: saddr = headers[SADB_X_EXT_DST_FLOW];
348: sa = (struct sockaddr *)(saddr + 1);
349: saddr = headers[SADB_X_EXT_DST_MASK];
350: mask = (struct sockaddr *)(saddr + 1);
351: p_encap(sa, mask, WID_DST(sa->sa_family));
352:
353: /* Bypass and deny flows do not set SADB_EXT_ADDRESS_DST! */
354: sap = headers[SADB_X_EXT_PROTOCOL];
355: saft = headers[SADB_X_EXT_FLOW_TYPE];
356: saddr = headers[SADB_EXT_ADDRESS_DST];
357: if (saddr)
358: sa = (struct sockaddr *)(saddr + 1);
359: else
360: sa = NULL;
361: p_protocol(sap, sa, saft, msg->sadb_msg_satype);
362:
363: printf("\n");
364: }
365:
366: /*
367: * Print address family header before a section of the routing table.
368: */
369: void
370: pr_family(int af)
371: {
372: char *afname;
373:
374: switch (af) {
375: case AF_INET:
376: afname = "Internet";
377: break;
378: case AF_INET6:
379: afname = "Internet6";
380: break;
381: case PF_KEY:
382: afname = "Encap";
383: break;
1.13 claudio 384: case AF_MPLS:
385: afname = "MPLS";
386: break;
1.1 claudio 387: case AF_APPLETALK:
388: afname = "AppleTalk";
389: break;
390: default:
391: afname = NULL;
392: break;
393: }
394: if (afname)
395: printf("\n%s:\n", afname);
396: else
397: printf("\nProtocol Family %d:\n", af);
398: }
399:
400: void
401: p_addr(struct sockaddr *sa, struct sockaddr *mask, int flags)
402: {
403: p_sockaddr(sa, mask, flags, WID_DST(sa->sa_family));
404: }
405:
406: void
407: p_gwaddr(struct sockaddr *sa, int af)
408: {
409: p_sockaddr(sa, 0, RTF_HOST, WID_GW(af));
410: }
411:
412: void
413: p_encap(struct sockaddr *sa, struct sockaddr *mask, int width)
414: {
1.13 claudio 415: char *cp;
416: unsigned short port = 0;
1.1 claudio 417:
1.2 todd 418: if (mask)
419: cp = netname(sa, mask);
420: else
421: cp = routename(sa);
1.1 claudio 422: switch (sa->sa_family) {
1.9 claudio 423: case AF_INET:
424: port = ntohs(((struct sockaddr_in *)sa)->sin_port);
425: break;
1.2 todd 426: case AF_INET6:
427: port = ntohs(((struct sockaddr_in6 *)sa)->sin6_port);
1.1 claudio 428: break;
429: }
430: if (width < 0)
431: printf("%s", cp);
432: else {
433: if (nflag)
434: printf("%-*s %-5u ", width, cp, port);
435: else
436: printf("%-*.*s %-5u ", width, width, cp, port);
437: }
438: }
439:
440: void
441: p_protocol(struct sadb_protocol *sap, struct sockaddr *sa, struct sadb_protocol
442: *saft, int proto)
443: {
444: printf("%-6u", sap->sadb_protocol_proto);
1.9 claudio 445:
1.1 claudio 446: if (sa)
447: p_sockaddr(sa, NULL, 0, -1);
448: else
449: printf("none");
450:
451: switch (proto) {
452: case SADB_SATYPE_ESP:
453: printf("/esp");
454: break;
455: case SADB_SATYPE_AH:
456: printf("/ah");
457: break;
458: case SADB_X_SATYPE_IPCOMP:
459: printf("/ipcomp");
460: break;
461: case SADB_X_SATYPE_IPIP:
462: printf("/ipip");
463: break;
464: default:
465: printf("/<unknown>");
466: }
467:
468: switch(saft->sadb_protocol_proto) {
469: case SADB_X_FLOW_TYPE_USE:
470: printf("/use");
471: break;
472: case SADB_X_FLOW_TYPE_REQUIRE:
473: printf("/require");
474: break;
475: case SADB_X_FLOW_TYPE_ACQUIRE:
476: printf("/acquire");
477: break;
478: case SADB_X_FLOW_TYPE_DENY:
479: printf("/deny");
480: break;
481: case SADB_X_FLOW_TYPE_BYPASS:
482: printf("/bypass");
483: break;
484: case SADB_X_FLOW_TYPE_DONTACQ:
485: printf("/dontacq");
486: break;
487: default:
488: printf("/<unknown type>");
489: }
490:
491: switch(saft->sadb_protocol_direction) {
492: case IPSP_DIRECTION_IN:
493: printf("/in");
494: break;
495: case IPSP_DIRECTION_OUT:
496: printf("/out");
497: break;
498: default:
499: printf("/<unknown>");
500: }
501: }
502:
503: void
504: p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width)
505: {
506: char *cp;
507:
508: switch (sa->sa_family) {
509: case AF_INET6:
510: {
511: struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa;
512: struct in6_addr *in6 = &sa6->sin6_addr;
513:
514: /*
515: * XXX: This is a special workaround for KAME kernels.
516: * sin6_scope_id field of SA should be set in the future.
517: */
518: if (IN6_IS_ADDR_LINKLOCAL(in6) ||
1.3 itojun 519: IN6_IS_ADDR_MC_LINKLOCAL(in6) ||
520: IN6_IS_ADDR_MC_INTFACELOCAL(in6)) {
1.1 claudio 521: /* XXX: override is ok? */
522: sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)
523: &in6->s6_addr[2]);
524: *(u_short *)&in6->s6_addr[2] = 0;
525: }
526: if (flags & RTF_HOST)
527: cp = routename((struct sockaddr *)sa6);
528: else
529: cp = netname((struct sockaddr *)sa6, mask);
530: break;
531: }
1.16 michele 532: case AF_MPLS:
1.17 michele 533: return;
1.1 claudio 534: default:
535: if ((flags & RTF_HOST) || mask == NULL)
536: cp = routename(sa);
537: else
538: cp = netname(sa, mask);
539: break;
540: }
541: if (width < 0)
542: printf("%s", cp);
543: else {
544: if (nflag)
545: printf("%-*s ", width, cp);
546: else
547: printf("%-*.*s ", width, width, cp);
548: }
549: }
550:
1.17 michele 551: static char line[MAXHOSTNAMELEN];
552: static char domain[MAXHOSTNAMELEN];
553:
554: void
555: p_sockaddr_mpls(struct sockaddr *in, struct sockaddr *out, int flags, int width)
556: {
557: if (in->sa_family != AF_MPLS)
558: return;
559:
1.30 claudio 560: if (flags & MPLS_OP_POP || flags == MPLS_OP_LOCAL) {
561: printf("%-*s ", width, label_print(in));
562: printf("%-*s ", width, label_print(NULL));
563: } else {
564: printf("%-*s ", width, label_print(in));
565: printf("%-*s ", width, label_print(out));
566: }
1.17 michele 567:
1.30 claudio 568: printf("%-6s ", mpls_op(flags));
1.17 michele 569: }
570:
1.1 claudio 571: void
572: p_flags(int f, char *format)
573: {
574: char name[33], *flags;
575: const struct bits *p = bits;
576:
577: for (flags = name; p->b_mask && flags < &name[sizeof(name) - 2]; p++)
578: if (p->b_mask & f)
579: *flags++ = p->b_val;
580: *flags = '\0';
581: printf(format, name);
582: }
583:
584: char *
585: routename(struct sockaddr *sa)
586: {
587: char *cp = NULL;
588: static int first = 1;
589:
590: if (first) {
591: first = 0;
592: if (gethostname(domain, sizeof(domain)) == 0 &&
593: (cp = strchr(domain, '.')))
594: (void)strlcpy(domain, cp + 1, sizeof(domain));
595: else
596: domain[0] = '\0';
597: cp = NULL;
598: }
599:
600: if (sa->sa_len == 0) {
601: (void)strlcpy(line, "default", sizeof(line));
602: return (line);
603: }
604:
605: switch (sa->sa_family) {
606: case AF_INET:
607: return
608: (routename4(((struct sockaddr_in *)sa)->sin_addr.s_addr));
609:
610: case AF_INET6:
611: {
612: struct sockaddr_in6 sin6;
613:
614: memset(&sin6, 0, sizeof(sin6));
615: memcpy(&sin6, sa, sa->sa_len);
616: sin6.sin6_len = sizeof(struct sockaddr_in6);
617: sin6.sin6_family = AF_INET6;
618: if (sa->sa_len == sizeof(struct sockaddr_in6) &&
619: (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
1.3 itojun 620: IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) ||
621: IN6_IS_ADDR_MC_INTFACELOCAL(&sin6.sin6_addr)) &&
1.1 claudio 622: sin6.sin6_scope_id == 0) {
623: sin6.sin6_scope_id =
624: ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
625: sin6.sin6_addr.s6_addr[2] = 0;
626: sin6.sin6_addr.s6_addr[3] = 0;
627: }
628: return (routename6(&sin6));
629: }
630:
631: case AF_LINK:
632: return (link_print(sa));
1.13 claudio 633: case AF_MPLS:
1.30 claudio 634: return (label_print(sa));
1.1 claudio 635: case AF_UNSPEC:
636: if (sa->sa_len == sizeof(struct sockaddr_rtlabel)) {
637: static char name[RTLABEL_LEN];
638: struct sockaddr_rtlabel *sr;
639:
640: sr = (struct sockaddr_rtlabel *)sa;
1.9 claudio 641: (void)strlcpy(name, sr->sr_label, sizeof(name));
1.1 claudio 642: return (name);
643: }
644: /* FALLTHROUGH */
645: default:
646: (void)snprintf(line, sizeof(line), "(%d) %s",
647: sa->sa_family, any_ntoa(sa));
648: break;
649: }
650: return (line);
651: }
652:
653: char *
654: routename4(in_addr_t in)
655: {
656: char *cp = NULL;
657: struct in_addr ina;
658: struct hostent *hp;
659:
660: if (in == INADDR_ANY)
661: cp = "default";
662: if (!cp && !nflag) {
663: if ((hp = gethostbyaddr((char *)&in,
664: sizeof(in), AF_INET)) != NULL) {
665: if ((cp = strchr(hp->h_name, '.')) &&
666: !strcmp(cp + 1, domain))
667: *cp = '\0';
668: cp = hp->h_name;
669: }
670: }
671: ina.s_addr = in;
672: strlcpy(line, cp ? cp : inet_ntoa(ina), sizeof(line));
673:
674: return (line);
675: }
676:
677: char *
678: routename6(struct sockaddr_in6 *sin6)
679: {
680: int niflags = 0;
681:
682: if (nflag)
683: niflags |= NI_NUMERICHOST;
684: else
685: niflags |= NI_NOFQDN;
686:
687: if (getnameinfo((struct sockaddr *)sin6, sin6->sin6_len,
688: line, sizeof(line), NULL, 0, niflags) != 0)
689: strncpy(line, "invalid", sizeof(line));
690:
691: return (line);
692: }
693:
694: /*
695: * Return the name of the network whose address is given.
696: * The address is assumed to be that of a net or subnet, not a host.
697: */
698: char *
699: netname4(in_addr_t in, in_addr_t mask)
700: {
701: char *cp = NULL;
702: struct netent *np = NULL;
703: int mbits;
704:
705: in = ntohl(in);
706: mask = ntohl(mask);
707: if (!nflag && in != INADDR_ANY) {
708: if ((np = getnetbyaddr(in, AF_INET)) != NULL)
709: cp = np->n_name;
710: }
1.28 dlg 711: if (in == INADDR_ANY && mask == INADDR_ANY)
1.1 claudio 712: cp = "default";
713: mbits = mask ? 33 - ffs(mask) : 0;
714: if (cp)
715: strlcpy(line, cp, sizeof(line));
716: #define C(x) ((x) & 0xff)
717: else if (mbits < 9)
718: snprintf(line, sizeof(line), "%u/%d", C(in >> 24), mbits);
719: else if (mbits < 17)
720: snprintf(line, sizeof(line), "%u.%u/%d",
721: C(in >> 24) , C(in >> 16), mbits);
722: else if (mbits < 25)
723: snprintf(line, sizeof(line), "%u.%u.%u/%d",
724: C(in >> 24), C(in >> 16), C(in >> 8), mbits);
725: else
726: snprintf(line, sizeof(line), "%u.%u.%u.%u/%d", C(in >> 24),
727: C(in >> 16), C(in >> 8), C(in), mbits);
728: #undef C
729: return (line);
730: }
731:
732: char *
733: netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask)
734: {
735: struct sockaddr_in6 sin6;
736: u_char *p;
737: int masklen, final = 0, illegal = 0;
738: int i, lim, flag, error;
739: char hbuf[NI_MAXHOST];
740:
741: sin6 = *sa6;
742:
743: flag = 0;
744: masklen = 0;
745: if (mask) {
746: lim = mask->sin6_len - offsetof(struct sockaddr_in6, sin6_addr);
1.4 claudio 747: lim = lim < (int)sizeof(struct in6_addr) ?
1.1 claudio 748: lim : sizeof(struct in6_addr);
749: for (p = (u_char *)&mask->sin6_addr, i = 0; i < lim; p++) {
750: if (final && *p) {
751: illegal++;
752: sin6.sin6_addr.s6_addr[i++] = 0x00;
753: continue;
754: }
755:
756: switch (*p & 0xff) {
757: case 0xff:
758: masklen += 8;
759: break;
760: case 0xfe:
761: masklen += 7;
762: final++;
763: break;
764: case 0xfc:
765: masklen += 6;
766: final++;
767: break;
768: case 0xf8:
769: masklen += 5;
770: final++;
771: break;
772: case 0xf0:
773: masklen += 4;
774: final++;
775: break;
776: case 0xe0:
777: masklen += 3;
778: final++;
779: break;
780: case 0xc0:
781: masklen += 2;
782: final++;
783: break;
784: case 0x80:
785: masklen += 1;
786: final++;
787: break;
788: case 0x00:
789: final++;
790: break;
791: default:
792: final++;
793: illegal++;
794: break;
795: }
796:
797: if (!illegal)
798: sin6.sin6_addr.s6_addr[i++] &= *p;
799: else
800: sin6.sin6_addr.s6_addr[i++] = 0x00;
801: }
802: while (i < sizeof(struct in6_addr))
803: sin6.sin6_addr.s6_addr[i++] = 0x00;
804: } else
805: masklen = 128;
806:
807: if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr))
808: return ("default");
809:
810: if (illegal)
811: warnx("illegal prefixlen");
812:
813: if (nflag)
814: flag |= NI_NUMERICHOST;
815: error = getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
816: hbuf, sizeof(hbuf), NULL, 0, flag);
817: if (error)
818: snprintf(hbuf, sizeof(hbuf), "invalid");
819:
820: snprintf(line, sizeof(line), "%s/%d", hbuf, masklen);
821: return (line);
822: }
823:
824: /*
825: * Return the name of the network whose address is given.
826: * The address is assumed to be that of a net or subnet, not a host.
827: */
828: char *
829: netname(struct sockaddr *sa, struct sockaddr *mask)
830: {
831: switch (sa->sa_family) {
832:
833: case AF_INET:
834: return netname4(((struct sockaddr_in *)sa)->sin_addr.s_addr,
1.29 claudio 835: mask->sa_len == 0 ? 0 :
1.1 claudio 836: ((struct sockaddr_in *)mask)->sin_addr.s_addr);
837: case AF_INET6:
838: return netname6((struct sockaddr_in6 *)sa,
839: (struct sockaddr_in6 *)mask);
840: case AF_LINK:
841: return (link_print(sa));
1.13 claudio 842: case AF_MPLS:
1.30 claudio 843: return (label_print(sa));
1.1 claudio 844: default:
845: snprintf(line, sizeof(line), "af %d: %s",
846: sa->sa_family, any_ntoa(sa));
847: break;
848: }
849: return (line);
850: }
851:
852: static const char hexlist[] = "0123456789abcdef";
853:
854: char *
855: any_ntoa(const struct sockaddr *sa)
856: {
857: static char obuf[240];
858: const char *in = sa->sa_data;
859: char *out = obuf;
860: int len = sa->sa_len - offsetof(struct sockaddr, sa_data);
861:
862: *out++ = 'Q';
863: do {
864: *out++ = hexlist[(*in >> 4) & 15];
865: *out++ = hexlist[(*in++) & 15];
866: *out++ = '.';
867: } while (--len > 0 && (out + 3) < &obuf[sizeof(obuf) - 1]);
868: out[-1] = '\0';
869: return (obuf);
870: }
871:
872: char *
873: link_print(struct sockaddr *sa)
874: {
875: struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
876: u_char *lla = (u_char *)sdl->sdl_data + sdl->sdl_nlen;
877:
878: if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
879: sdl->sdl_slen == 0) {
880: (void)snprintf(line, sizeof(line), "link#%d", sdl->sdl_index);
881: return (line);
882: }
883: switch (sdl->sdl_type) {
884: case IFT_ETHER:
885: case IFT_CARP:
886: return (ether_ntoa((struct ether_addr *)lla));
887: default:
888: return (link_ntoa(sdl));
889: }
1.13 claudio 890: }
891:
892: char *
1.30 claudio 893: mpls_op(u_int32_t type)
1.13 claudio 894: {
1.16 michele 895: switch (type & (MPLS_OP_PUSH | MPLS_OP_POP | MPLS_OP_SWAP)) {
1.21 michele 896: case MPLS_OP_LOCAL:
897: return ("LOCAL");
1.13 claudio 898: case MPLS_OP_POP:
899: return ("POP");
900: case MPLS_OP_SWAP:
901: return ("SWAP");
902: case MPLS_OP_PUSH:
903: return ("PUSH");
904: default:
905: return ("?");
906: }
907: }
908:
909: char *
1.30 claudio 910: label_print(struct sockaddr *sa)
1.13 claudio 911: {
1.30 claudio 912: struct sockaddr_mpls *smpls = (struct sockaddr_mpls *)sa;
1.13 claudio 913:
1.30 claudio 914: if (smpls)
915: (void)snprintf(line, sizeof(line), "%u",
916: ntohl(smpls->smpls_label) >> MPLS_LABEL_OFFSET);
917: else
918: (void)snprintf(line, sizeof(line), "-");
1.13 claudio 919:
920: return (line);
1.1 claudio 921: }
922:
923: void
924: index_pfk(struct sadb_msg *msg, void **headers)
925: {
926: struct sadb_ext *ext;
927:
928: for (ext = (struct sadb_ext *)(msg + 1);
929: (size_t)((u_int8_t *)ext - (u_int8_t *)msg) <
930: msg->sadb_msg_len * PFKEYV2_CHUNK && ext->sadb_ext_len > 0;
931: ext = (struct sadb_ext *)((u_int8_t *)ext +
932: ext->sadb_ext_len * PFKEYV2_CHUNK)) {
933: switch (ext->sadb_ext_type) {
934: case SADB_EXT_ADDRESS_SRC:
935: headers[SADB_EXT_ADDRESS_SRC] = (void *)ext;
936: break;
937: case SADB_EXT_ADDRESS_DST:
938: headers[SADB_EXT_ADDRESS_DST] = (void *)ext;
939: break;
940: case SADB_X_EXT_PROTOCOL:
941: headers[SADB_X_EXT_PROTOCOL] = (void *)ext;
942: break;
943: case SADB_X_EXT_SRC_FLOW:
944: headers[SADB_X_EXT_SRC_FLOW] = (void *)ext;
945: break;
946: case SADB_X_EXT_DST_FLOW:
947: headers[SADB_X_EXT_DST_FLOW] = (void *)ext;
948: break;
949: case SADB_X_EXT_SRC_MASK:
950: headers[SADB_X_EXT_SRC_MASK] = (void *)ext;
951: break;
952: case SADB_X_EXT_DST_MASK:
953: headers[SADB_X_EXT_DST_MASK] = (void *)ext;
954: break;
955: case SADB_X_EXT_FLOW_TYPE:
956: headers[SADB_X_EXT_FLOW_TYPE] = (void *)ext;
1.26 deraadt 957: break;
1.1 claudio 958: default:
959: /* Ignore. */
960: break;
961: }
962: }
963: }