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1.5 ! pyr 1: /* $OpenBSD: show.c,v 1.4 2006/12/29 10:09:09 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 <netipx/ipx.h>
46: #include <netinet/if_ether.h>
47: #include <netinet/ip_ipsp.h>
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 *);
63:
64: #define ROUNDUP(a) \
65: ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
66: #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
67:
68: #define PFKEYV2_CHUNK sizeof(u_int64_t)
69:
70: /*
71: * Definitions for showing gateway flags.
72: */
73: struct bits {
74: int b_mask;
75: char b_val;
76: };
77: static const struct bits bits[] = {
78: { RTF_UP, 'U' },
79: { RTF_GATEWAY, 'G' },
80: { RTF_HOST, 'H' },
81: { RTF_REJECT, 'R' },
82: { RTF_BLACKHOLE, 'B' },
83: { RTF_DYNAMIC, 'D' },
84: { RTF_MODIFIED, 'M' },
85: { RTF_DONE, 'd' }, /* Completed -- for routing messages only */
86: { RTF_MASK, 'm' }, /* Mask Present -- for routing messages only */
87: { RTF_CLONING, 'C' },
88: { RTF_XRESOLVE, 'X' },
89: { RTF_LLINFO, 'L' },
90: { RTF_STATIC, 'S' },
91: { RTF_PROTO1, '1' },
92: { RTF_PROTO2, '2' },
93: { RTF_PROTO3, '3' },
94: { RTF_CLONED, 'c' },
95: { RTF_JUMBO, 'J' },
96: { 0 }
97: };
98:
99: void pr_rthdr(int, int);
100: void p_rtentry(struct rt_msghdr *);
101: void p_pfkentry(struct sadb_msg *);
102: void pr_family(int);
103: void p_encap(struct sockaddr *, struct sockaddr *, int);
104: void p_protocol(struct sadb_protocol *, struct sockaddr *, struct
105: sadb_protocol *, int);
106: void p_sockaddr(struct sockaddr *, struct sockaddr *, int, int);
107: void p_flags(int, char *);
108: char *routename4(in_addr_t);
109: char *routename6(struct sockaddr_in6 *);
110: void index_pfk(struct sadb_msg *, void **);
111:
112: /*
113: * Print routing tables.
114: */
115: void
116: p_rttables(int af)
117: {
118: struct rt_msghdr *rtm;
119: struct sadb_msg *msg;
120: char *buf = NULL, *next, *lim = NULL;
121: size_t needed;
122: int mib[6];
123: struct sockaddr *sa;
124:
125: mib[0] = CTL_NET;
126: mib[1] = PF_ROUTE;
127: mib[2] = 0;
128: mib[3] = af;
129: mib[4] = NET_RT_DUMP;
130: mib[5] = 0;
131: if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
132: err(1, "route-sysctl-estimate");
133: if (needed > 0) {
134: if ((buf = malloc(needed)) == 0)
135: err(1, NULL);
136: if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
137: err(1, "sysctl of routing table");
138: lim = buf + needed;
139: }
140:
141: printf("Routing tables\n");
142:
143: if (buf) {
144: for (next = buf; next < lim; next += rtm->rtm_msglen) {
145: rtm = (struct rt_msghdr *)next;
146: sa = (struct sockaddr *)(rtm + 1);
147: if (af != AF_UNSPEC && sa->sa_family != af)
148: continue;
149: p_rtentry(rtm);
150: }
151: free(buf);
152: buf = NULL;
153: }
154:
155: if (af != 0 && af != PF_KEY)
156: return;
157:
158: mib[0] = CTL_NET;
159: mib[1] = PF_KEY;
160: mib[2] = PF_KEY_V2;
161: mib[3] = NET_KEY_SPD_DUMP;
162: mib[4] = mib[5] = 0;
163:
164: if (sysctl(mib, 4, NULL, &needed, NULL, 0) == -1) {
165: if (errno == ENOPROTOOPT)
166: return;
167: err(1, "spd-sysctl-estimate");
168: }
169: if (needed > 0) {
170: if ((buf = malloc(needed)) == 0)
171: err(1, NULL);
172: if (sysctl(mib, 4, buf, &needed, NULL, 0) == -1)
173: err(1,"sysctl of spd");
174: lim = buf + needed;
175: }
176:
177: if (buf) {
178: printf("\nEncap:\n");
179:
180: for (next = buf; next < lim; next += msg->sadb_msg_len *
181: PFKEYV2_CHUNK) {
182: msg = (struct sadb_msg *)next;
183: if (msg->sadb_msg_len == 0)
184: break;
185: p_pfkentry(msg);
186: }
187: free(buf);
188: buf = NULL;
189: }
190: }
191:
192: /*
193: * column widths; each followed by one space
194: * width of destination/gateway column
195: * strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4
196: */
197: #define WID_DST(af) ((af) == AF_INET6 ? (nflag ? 34 : 18) : 18)
198: #define WID_GW(af) ((af) == AF_INET6 ? (nflag ? 30 : 18) : 18)
199:
200: /*
201: * Print header for routing table columns.
202: */
203: void
204: pr_rthdr(int af, int Aflag)
205: {
206: if (Aflag)
207: printf("%-*.*s ", PLEN, PLEN, "Address");
208: if (af != PF_KEY)
209: printf("%-*.*s %-*.*s %-6.6s %6.6s %8.8s %6.6s %s\n",
210: WID_DST(af), WID_DST(af), "Destination",
211: WID_GW(af), WID_GW(af), "Gateway",
212: "Flags", "Refs", "Use", "Mtu", "Interface");
213: else
214: printf("%-18s %-5s %-18s %-5s %-5s %-22s\n",
215: "Source", "Port", "Destination",
216: "Port", "Proto", "SA(Address/Proto/Type/Direction)");
217: }
218:
219: static void
220: get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info)
221: {
222: int i;
223:
224: for (i = 0; i < RTAX_MAX; i++) {
225: if (addrs & (1 << i)) {
226: rti_info[i] = sa;
227: sa = (struct sockaddr *)((char *)(sa) +
228: ROUNDUP(sa->sa_len));
229: } else
230: rti_info[i] = NULL;
231: }
232: }
233:
234: /*
235: * Print a routing table entry.
236: */
237: void
238: p_rtentry(struct rt_msghdr *rtm)
239: {
240: static int old_af = -1;
241: struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
242: struct sockaddr *mask, *rti_info[RTAX_MAX];
243: char ifbuf[IF_NAMESIZE];
244:
245:
246: if (sa->sa_family == AF_KEY)
247: return;
248:
1.5 ! pyr 249: get_rtaddrs(rtm->rtm_addrs, sa, rti_info);
! 250: if (Fflag && rti_info[RTAX_GATEWAY]->sa_family != sa->sa_family) {
! 251: return;
! 252: }
1.1 claudio 253: if (old_af != sa->sa_family) {
254: old_af = sa->sa_family;
255: pr_family(sa->sa_family);
256: pr_rthdr(sa->sa_family, 0);
257: }
258:
259: mask = rti_info[RTAX_NETMASK];
260: if ((sa = rti_info[RTAX_DST]) == NULL)
261: return;
262:
263: p_sockaddr(sa, mask, rtm->rtm_flags, WID_DST(sa->sa_family));
264: p_sockaddr(rti_info[RTAX_GATEWAY], NULL, RTF_HOST,
265: WID_GW(sa->sa_family));
266: p_flags(rtm->rtm_flags, "%-6.6s ");
267: printf("%6d %8ld ", (int)rtm->rtm_rmx.rmx_refcnt,
268: rtm->rtm_rmx.rmx_pksent);
269: if (rtm->rtm_rmx.rmx_mtu)
270: printf("%6ld ", rtm->rtm_rmx.rmx_mtu);
271: else
272: printf("%6s ", "-");
273: putchar((rtm->rtm_rmx.rmx_locks & RTV_MTU) ? 'L' : ' ');
274: printf(" %.16s", if_indextoname(rtm->rtm_index, ifbuf));
275: putchar('\n');
276: }
277:
278: /*
279: * Print a pfkey/encap entry.
280: */
281: void
282: p_pfkentry(struct sadb_msg *msg)
283: {
284: static int old = 0;
285: struct sadb_ext *ext;
286: struct sadb_address *saddr;
287: struct sadb_protocol *sap, *saft;
288: struct sockaddr *sa, *mask;
289: void *headers[SADB_EXT_MAX + 1];
290:
291: if (!old) {
292: pr_rthdr(PF_KEY, 0);
293: old++;
294: }
295:
296: bzero(headers, sizeof(headers));
297: index_pfk(msg, headers);
298:
299: /* These are always set */
300: saddr = headers[SADB_X_EXT_SRC_FLOW];
301: sa = (struct sockaddr *)(saddr + 1);
302: saddr = headers[SADB_X_EXT_SRC_MASK];
303: mask = (struct sockaddr *)(saddr + 1);
304: p_encap(sa, mask, WID_DST(sa->sa_family));
305:
306: /* These are always set, too. */
307: saddr = headers[SADB_X_EXT_DST_FLOW];
308: sa = (struct sockaddr *)(saddr + 1);
309: saddr = headers[SADB_X_EXT_DST_MASK];
310: mask = (struct sockaddr *)(saddr + 1);
311: p_encap(sa, mask, WID_DST(sa->sa_family));
312:
313: /* Bypass and deny flows do not set SADB_EXT_ADDRESS_DST! */
314: sap = headers[SADB_X_EXT_PROTOCOL];
315: saft = headers[SADB_X_EXT_FLOW_TYPE];
316: saddr = headers[SADB_EXT_ADDRESS_DST];
317: if (saddr)
318: sa = (struct sockaddr *)(saddr + 1);
319: else
320: sa = NULL;
321: p_protocol(sap, sa, saft, msg->sadb_msg_satype);
322:
323: printf("\n");
324: }
325:
326: /*
327: * Print address family header before a section of the routing table.
328: */
329: void
330: pr_family(int af)
331: {
332: char *afname;
333:
334: switch (af) {
335: case AF_INET:
336: afname = "Internet";
337: break;
338: case AF_INET6:
339: afname = "Internet6";
340: break;
341: case AF_IPX:
342: afname = "IPX";
343: break;
344: case PF_KEY:
345: afname = "Encap";
346: break;
347: case AF_APPLETALK:
348: afname = "AppleTalk";
349: break;
350: default:
351: afname = NULL;
352: break;
353: }
354: if (afname)
355: printf("\n%s:\n", afname);
356: else
357: printf("\nProtocol Family %d:\n", af);
358: }
359:
360: void
361: p_addr(struct sockaddr *sa, struct sockaddr *mask, int flags)
362: {
363: p_sockaddr(sa, mask, flags, WID_DST(sa->sa_family));
364: }
365:
366: void
367: p_gwaddr(struct sockaddr *sa, int af)
368: {
369: p_sockaddr(sa, 0, RTF_HOST, WID_GW(af));
370: }
371:
372: void
373: p_encap(struct sockaddr *sa, struct sockaddr *mask, int width)
374: {
375: char *cp;
376: unsigned short port;
377:
1.2 todd 378: if (mask)
379: cp = netname(sa, mask);
380: else
381: cp = routename(sa);
1.1 claudio 382: switch (sa->sa_family) {
1.2 todd 383: case AF_INET6:
384: port = ntohs(((struct sockaddr_in6 *)sa)->sin6_port);
1.1 claudio 385: break;
386: default:
387: port = ntohs(((struct sockaddr_in *)sa)->sin_port);
388: break;
389: }
390: if (width < 0)
391: printf("%s", cp);
392: else {
393: if (nflag)
394: printf("%-*s %-5u ", width, cp, port);
395: else
396: printf("%-*.*s %-5u ", width, width, cp, port);
397: }
398: }
399:
400: void
401: p_protocol(struct sadb_protocol *sap, struct sockaddr *sa, struct sadb_protocol
402: *saft, int proto)
403: {
404: printf("%-6u", sap->sadb_protocol_proto);
405: if (sa)
406: p_sockaddr(sa, NULL, 0, -1);
407: else
408: printf("none");
409:
410: switch (proto) {
411: case SADB_SATYPE_ESP:
412: printf("/esp");
413: break;
414: case SADB_SATYPE_AH:
415: printf("/ah");
416: break;
417: case SADB_X_SATYPE_IPCOMP:
418: printf("/ipcomp");
419: break;
420: case SADB_X_SATYPE_IPIP:
421: printf("/ipip");
422: break;
423: default:
424: printf("/<unknown>");
425: }
426:
427: switch(saft->sadb_protocol_proto) {
428: case SADB_X_FLOW_TYPE_USE:
429: printf("/use");
430: break;
431: case SADB_X_FLOW_TYPE_REQUIRE:
432: printf("/require");
433: break;
434: case SADB_X_FLOW_TYPE_ACQUIRE:
435: printf("/acquire");
436: break;
437: case SADB_X_FLOW_TYPE_DENY:
438: printf("/deny");
439: break;
440: case SADB_X_FLOW_TYPE_BYPASS:
441: printf("/bypass");
442: break;
443: case SADB_X_FLOW_TYPE_DONTACQ:
444: printf("/dontacq");
445: break;
446: default:
447: printf("/<unknown type>");
448: }
449:
450: switch(saft->sadb_protocol_direction) {
451: case IPSP_DIRECTION_IN:
452: printf("/in");
453: break;
454: case IPSP_DIRECTION_OUT:
455: printf("/out");
456: break;
457: default:
458: printf("/<unknown>");
459: }
460: }
461:
462: void
463: p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width)
464: {
465: char *cp;
466:
467: switch (sa->sa_family) {
468: case AF_INET6:
469: {
470: struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa;
471: struct in6_addr *in6 = &sa6->sin6_addr;
472:
473: /*
474: * XXX: This is a special workaround for KAME kernels.
475: * sin6_scope_id field of SA should be set in the future.
476: */
477: if (IN6_IS_ADDR_LINKLOCAL(in6) ||
1.3 itojun 478: IN6_IS_ADDR_MC_LINKLOCAL(in6) ||
479: IN6_IS_ADDR_MC_INTFACELOCAL(in6)) {
1.1 claudio 480: /* XXX: override is ok? */
481: sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)
482: &in6->s6_addr[2]);
483: *(u_short *)&in6->s6_addr[2] = 0;
484: }
485: if (flags & RTF_HOST)
486: cp = routename((struct sockaddr *)sa6);
487: else
488: cp = netname((struct sockaddr *)sa6, mask);
489: break;
490: }
491: default:
492: if ((flags & RTF_HOST) || mask == NULL)
493: cp = routename(sa);
494: else
495: cp = netname(sa, mask);
496: break;
497: }
498: if (width < 0)
499: printf("%s", cp);
500: else {
501: if (nflag)
502: printf("%-*s ", width, cp);
503: else
504: printf("%-*.*s ", width, width, cp);
505: }
506: }
507:
508: void
509: p_flags(int f, char *format)
510: {
511: char name[33], *flags;
512: const struct bits *p = bits;
513:
514: for (flags = name; p->b_mask && flags < &name[sizeof(name) - 2]; p++)
515: if (p->b_mask & f)
516: *flags++ = p->b_val;
517: *flags = '\0';
518: printf(format, name);
519: }
520:
521: static char line[MAXHOSTNAMELEN];
522: static char domain[MAXHOSTNAMELEN];
523:
524: char *
525: routename(struct sockaddr *sa)
526: {
527: char *cp = NULL;
528: static int first = 1;
529:
530: if (first) {
531: first = 0;
532: if (gethostname(domain, sizeof(domain)) == 0 &&
533: (cp = strchr(domain, '.')))
534: (void)strlcpy(domain, cp + 1, sizeof(domain));
535: else
536: domain[0] = '\0';
537: cp = NULL;
538: }
539:
540: if (sa->sa_len == 0) {
541: (void)strlcpy(line, "default", sizeof(line));
542: return (line);
543: }
544:
545: switch (sa->sa_family) {
546: case AF_INET:
547: return
548: (routename4(((struct sockaddr_in *)sa)->sin_addr.s_addr));
549:
550: case AF_INET6:
551: {
552: struct sockaddr_in6 sin6;
553:
554: memset(&sin6, 0, sizeof(sin6));
555: memcpy(&sin6, sa, sa->sa_len);
556: sin6.sin6_len = sizeof(struct sockaddr_in6);
557: sin6.sin6_family = AF_INET6;
558: if (sa->sa_len == sizeof(struct sockaddr_in6) &&
559: (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
1.3 itojun 560: IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) ||
561: IN6_IS_ADDR_MC_INTFACELOCAL(&sin6.sin6_addr)) &&
1.1 claudio 562: sin6.sin6_scope_id == 0) {
563: sin6.sin6_scope_id =
564: ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
565: sin6.sin6_addr.s6_addr[2] = 0;
566: sin6.sin6_addr.s6_addr[3] = 0;
567: }
568: return (routename6(&sin6));
569: }
570:
571: case AF_IPX:
572: return (ipx_print(sa));
573:
574: case AF_LINK:
575: return (link_print(sa));
576:
577: case AF_UNSPEC:
578: if (sa->sa_len == sizeof(struct sockaddr_rtlabel)) {
579: static char name[RTLABEL_LEN];
580: struct sockaddr_rtlabel *sr;
581:
582: sr = (struct sockaddr_rtlabel *)sa;
583: strlcpy(name, sr->sr_label, sizeof(name));
584: return (name);
585: }
586: /* FALLTHROUGH */
587: default:
588: (void)snprintf(line, sizeof(line), "(%d) %s",
589: sa->sa_family, any_ntoa(sa));
590: break;
591: }
592: return (line);
593: }
594:
595: char *
596: routename4(in_addr_t in)
597: {
598: char *cp = NULL;
599: struct in_addr ina;
600: struct hostent *hp;
601:
602: if (in == INADDR_ANY)
603: cp = "default";
604: if (!cp && !nflag) {
605: if ((hp = gethostbyaddr((char *)&in,
606: sizeof(in), AF_INET)) != NULL) {
607: if ((cp = strchr(hp->h_name, '.')) &&
608: !strcmp(cp + 1, domain))
609: *cp = '\0';
610: cp = hp->h_name;
611: }
612: }
613: ina.s_addr = in;
614: strlcpy(line, cp ? cp : inet_ntoa(ina), sizeof(line));
615:
616: return (line);
617: }
618:
619: char *
620: routename6(struct sockaddr_in6 *sin6)
621: {
622: int niflags = 0;
623:
624: if (nflag)
625: niflags |= NI_NUMERICHOST;
626: else
627: niflags |= NI_NOFQDN;
628:
629: if (getnameinfo((struct sockaddr *)sin6, sin6->sin6_len,
630: line, sizeof(line), NULL, 0, niflags) != 0)
631: strncpy(line, "invalid", sizeof(line));
632:
633: return (line);
634: }
635:
636: /*
637: * Return the name of the network whose address is given.
638: * The address is assumed to be that of a net or subnet, not a host.
639: */
640: char *
641: netname4(in_addr_t in, in_addr_t mask)
642: {
643: char *cp = NULL;
644: struct netent *np = NULL;
645: int mbits;
646:
647: in = ntohl(in);
648: mask = ntohl(mask);
649: if (!nflag && in != INADDR_ANY) {
650: if ((np = getnetbyaddr(in, AF_INET)) != NULL)
651: cp = np->n_name;
652: }
653: if (in == INADDR_ANY)
654: cp = "default";
655: mbits = mask ? 33 - ffs(mask) : 0;
656: if (cp)
657: strlcpy(line, cp, sizeof(line));
658: #define C(x) ((x) & 0xff)
659: else if (mbits < 9)
660: snprintf(line, sizeof(line), "%u/%d", C(in >> 24), mbits);
661: else if (mbits < 17)
662: snprintf(line, sizeof(line), "%u.%u/%d",
663: C(in >> 24) , C(in >> 16), mbits);
664: else if (mbits < 25)
665: snprintf(line, sizeof(line), "%u.%u.%u/%d",
666: C(in >> 24), C(in >> 16), C(in >> 8), mbits);
667: else
668: snprintf(line, sizeof(line), "%u.%u.%u.%u/%d", C(in >> 24),
669: C(in >> 16), C(in >> 8), C(in), mbits);
670: #undef C
671: return (line);
672: }
673:
674: char *
675: netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask)
676: {
677: struct sockaddr_in6 sin6;
678: u_char *p;
679: int masklen, final = 0, illegal = 0;
680: int i, lim, flag, error;
681: char hbuf[NI_MAXHOST];
682:
683: sin6 = *sa6;
684:
685: flag = 0;
686: masklen = 0;
687: if (mask) {
688: lim = mask->sin6_len - offsetof(struct sockaddr_in6, sin6_addr);
1.4 claudio 689: lim = lim < (int)sizeof(struct in6_addr) ?
1.1 claudio 690: lim : sizeof(struct in6_addr);
691: for (p = (u_char *)&mask->sin6_addr, i = 0; i < lim; p++) {
692: if (final && *p) {
693: illegal++;
694: sin6.sin6_addr.s6_addr[i++] = 0x00;
695: continue;
696: }
697:
698: switch (*p & 0xff) {
699: case 0xff:
700: masklen += 8;
701: break;
702: case 0xfe:
703: masklen += 7;
704: final++;
705: break;
706: case 0xfc:
707: masklen += 6;
708: final++;
709: break;
710: case 0xf8:
711: masklen += 5;
712: final++;
713: break;
714: case 0xf0:
715: masklen += 4;
716: final++;
717: break;
718: case 0xe0:
719: masklen += 3;
720: final++;
721: break;
722: case 0xc0:
723: masklen += 2;
724: final++;
725: break;
726: case 0x80:
727: masklen += 1;
728: final++;
729: break;
730: case 0x00:
731: final++;
732: break;
733: default:
734: final++;
735: illegal++;
736: break;
737: }
738:
739: if (!illegal)
740: sin6.sin6_addr.s6_addr[i++] &= *p;
741: else
742: sin6.sin6_addr.s6_addr[i++] = 0x00;
743: }
744: while (i < sizeof(struct in6_addr))
745: sin6.sin6_addr.s6_addr[i++] = 0x00;
746: } else
747: masklen = 128;
748:
749: if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr))
750: return ("default");
751:
752: if (illegal)
753: warnx("illegal prefixlen");
754:
755: if (nflag)
756: flag |= NI_NUMERICHOST;
757: error = getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
758: hbuf, sizeof(hbuf), NULL, 0, flag);
759: if (error)
760: snprintf(hbuf, sizeof(hbuf), "invalid");
761:
762: snprintf(line, sizeof(line), "%s/%d", hbuf, masklen);
763: return (line);
764: }
765:
766: /*
767: * Return the name of the network whose address is given.
768: * The address is assumed to be that of a net or subnet, not a host.
769: */
770: char *
771: netname(struct sockaddr *sa, struct sockaddr *mask)
772: {
773: switch (sa->sa_family) {
774:
775: case AF_INET:
776: return netname4(((struct sockaddr_in *)sa)->sin_addr.s_addr,
777: ((struct sockaddr_in *)mask)->sin_addr.s_addr);
778: case AF_INET6:
779: return netname6((struct sockaddr_in6 *)sa,
780: (struct sockaddr_in6 *)mask);
781: case AF_IPX:
782: return (ipx_print(sa));
783: case AF_LINK:
784: return (link_print(sa));
785: default:
786: snprintf(line, sizeof(line), "af %d: %s",
787: sa->sa_family, any_ntoa(sa));
788: break;
789: }
790: return (line);
791: }
792:
793: static const char hexlist[] = "0123456789abcdef";
794:
795: char *
796: any_ntoa(const struct sockaddr *sa)
797: {
798: static char obuf[240];
799: const char *in = sa->sa_data;
800: char *out = obuf;
801: int len = sa->sa_len - offsetof(struct sockaddr, sa_data);
802:
803: *out++ = 'Q';
804: do {
805: *out++ = hexlist[(*in >> 4) & 15];
806: *out++ = hexlist[(*in++) & 15];
807: *out++ = '.';
808: } while (--len > 0 && (out + 3) < &obuf[sizeof(obuf) - 1]);
809: out[-1] = '\0';
810: return (obuf);
811: }
812:
813: short ipx_nullh[] = {0,0,0};
814: short ipx_bh[] = {-1,-1,-1};
815:
816: char *
817: ipx_print(struct sockaddr *sa)
818: {
819: struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa;
820: struct ipx_addr work;
821: union {
822: union ipx_net net_e;
823: u_int32_t long_e;
824: } net;
825: u_short port;
826: static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25];
827: char *host = "";
828: char *p;
829: u_char *q;
830:
831: work = sipx->sipx_addr;
832: port = ntohs(work.ipx_port);
833: work.ipx_port = 0;
834: net.net_e = work.ipx_net;
835: if (ipx_nullhost(work) && net.long_e == 0) {
836: if (!port)
837: return ("*.*");
838: (void)snprintf(mybuf, sizeof(mybuf), "*.0x%XH", port);
839: return (mybuf);
840: }
841:
842: if (memcmp(ipx_bh, work.ipx_host.c_host, 6) == 0)
843: host = "any";
844: else if (memcmp(ipx_nullh, work.ipx_host.c_host, 6) == 0)
845: host = "*";
846: else {
847: q = work.ipx_host.c_host;
848: (void)snprintf(chost, sizeof(chost), "%02X%02X%02X%02X%02X%02XH",
849: q[0], q[1], q[2], q[3], q[4], q[5]);
850: for (p = chost; *p == '0' && p < chost + 12; p++)
851: /* void */;
852: host = p;
853: }
854: if (port)
855: (void)snprintf(cport, sizeof(cport), ".%XH", htons(port));
856: else
857: *cport = '\0';
858:
859: (void)snprintf(mybuf, sizeof(mybuf), "%XH.%s%s",
860: ntohl(net.long_e), host, cport);
861: return (mybuf);
862: }
863:
864: char *
865: link_print(struct sockaddr *sa)
866: {
867: struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
868: u_char *lla = (u_char *)sdl->sdl_data + sdl->sdl_nlen;
869:
870: if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
871: sdl->sdl_slen == 0) {
872: (void)snprintf(line, sizeof(line), "link#%d", sdl->sdl_index);
873: return (line);
874: }
875: switch (sdl->sdl_type) {
876: case IFT_ETHER:
877: case IFT_CARP:
878: return (ether_ntoa((struct ether_addr *)lla));
879: default:
880: return (link_ntoa(sdl));
881: }
882: }
883:
884: void
885: index_pfk(struct sadb_msg *msg, void **headers)
886: {
887: struct sadb_ext *ext;
888:
889: for (ext = (struct sadb_ext *)(msg + 1);
890: (size_t)((u_int8_t *)ext - (u_int8_t *)msg) <
891: msg->sadb_msg_len * PFKEYV2_CHUNK && ext->sadb_ext_len > 0;
892: ext = (struct sadb_ext *)((u_int8_t *)ext +
893: ext->sadb_ext_len * PFKEYV2_CHUNK)) {
894: switch (ext->sadb_ext_type) {
895: case SADB_EXT_ADDRESS_SRC:
896: headers[SADB_EXT_ADDRESS_SRC] = (void *)ext;
897: break;
898: case SADB_EXT_ADDRESS_DST:
899: headers[SADB_EXT_ADDRESS_DST] = (void *)ext;
900: break;
901: case SADB_X_EXT_PROTOCOL:
902: headers[SADB_X_EXT_PROTOCOL] = (void *)ext;
903: break;
904: case SADB_X_EXT_SRC_FLOW:
905: headers[SADB_X_EXT_SRC_FLOW] = (void *)ext;
906: break;
907: case SADB_X_EXT_DST_FLOW:
908: headers[SADB_X_EXT_DST_FLOW] = (void *)ext;
909: break;
910: case SADB_X_EXT_SRC_MASK:
911: headers[SADB_X_EXT_SRC_MASK] = (void *)ext;
912: break;
913: case SADB_X_EXT_DST_MASK:
914: headers[SADB_X_EXT_DST_MASK] = (void *)ext;
915: break;
916: case SADB_X_EXT_FLOW_TYPE:
917: headers[SADB_X_EXT_FLOW_TYPE] = (void *)ext;
918: default:
919: /* Ignore. */
920: break;
921: }
922: }
923: }