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1.9 ! claudio 1: /* $OpenBSD: show.c,v 1.8 2007/07/21 15:43:42 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>
47: #include <arpa/inet.h>
48:
49: #include <err.h>
50: #include <errno.h>
51: #include <netdb.h>
52: #include <stdio.h>
53: #include <stddef.h>
54: #include <stdlib.h>
55: #include <string.h>
56: #include <unistd.h>
57:
58: #include "netstat.h"
59:
60: char *any_ntoa(const struct sockaddr *);
61: char *link_print(struct sockaddr *);
62:
63: #define ROUNDUP(a) \
64: ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
65: #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
66:
67: #define PFKEYV2_CHUNK sizeof(u_int64_t)
68:
69: /*
70: * Definitions for showing gateway flags.
71: */
72: struct bits {
73: int b_mask;
74: char b_val;
75: };
76: static const struct bits bits[] = {
77: { RTF_UP, 'U' },
78: { RTF_GATEWAY, 'G' },
79: { RTF_HOST, 'H' },
80: { RTF_REJECT, 'R' },
81: { RTF_BLACKHOLE, 'B' },
82: { RTF_DYNAMIC, 'D' },
83: { RTF_MODIFIED, 'M' },
84: { RTF_DONE, 'd' }, /* Completed -- for routing messages only */
85: { RTF_MASK, 'm' }, /* Mask Present -- for routing messages only */
86: { RTF_CLONING, 'C' },
87: { RTF_XRESOLVE, 'X' },
88: { RTF_LLINFO, 'L' },
89: { RTF_STATIC, 'S' },
90: { RTF_PROTO1, '1' },
91: { RTF_PROTO2, '2' },
92: { RTF_PROTO3, '3' },
93: { RTF_CLONED, 'c' },
94: { RTF_JUMBO, 'J' },
95: { 0 }
96: };
97:
98: void pr_rthdr(int, int);
99: void p_rtentry(struct rt_msghdr *);
100: void p_pfkentry(struct sadb_msg *);
101: void pr_family(int);
102: void p_encap(struct sockaddr *, struct sockaddr *, int);
103: void p_protocol(struct sadb_protocol *, struct sockaddr *, struct
104: sadb_protocol *, int);
105: void p_sockaddr(struct sockaddr *, struct sockaddr *, int, int);
106: void p_flags(int, char *);
107: char *routename4(in_addr_t);
108: char *routename6(struct sockaddr_in6 *);
109: void index_pfk(struct sadb_msg *, void **);
110:
111: /*
112: * Print routing tables.
113: */
114: void
115: p_rttables(int af)
116: {
117: struct rt_msghdr *rtm;
118: struct sadb_msg *msg;
119: char *buf = NULL, *next, *lim = NULL;
120: size_t needed;
121: int mib[6];
122: struct sockaddr *sa;
123:
124: mib[0] = CTL_NET;
125: mib[1] = PF_ROUTE;
126: mib[2] = 0;
127: mib[3] = af;
128: mib[4] = NET_RT_DUMP;
129: mib[5] = 0;
130: if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
131: err(1, "route-sysctl-estimate");
132: if (needed > 0) {
133: if ((buf = malloc(needed)) == 0)
134: err(1, NULL);
135: if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
136: err(1, "sysctl of routing table");
137: lim = buf + needed;
138: }
139:
140: printf("Routing tables\n");
141:
142: if (buf) {
143: for (next = buf; next < lim; next += rtm->rtm_msglen) {
144: rtm = (struct rt_msghdr *)next;
1.8 claudio 145: if (rtm->rtm_version != RTM_VERSION)
146: continue;
1.1 claudio 147: sa = (struct sockaddr *)(rtm + 1);
148: if (af != AF_UNSPEC && sa->sa_family != af)
149: continue;
150: p_rtentry(rtm);
151: }
152: free(buf);
153: buf = NULL;
154: }
155:
156: if (af != 0 && af != PF_KEY)
157: return;
158:
159: mib[0] = CTL_NET;
160: mib[1] = PF_KEY;
161: mib[2] = PF_KEY_V2;
162: mib[3] = NET_KEY_SPD_DUMP;
163: mib[4] = mib[5] = 0;
164:
165: if (sysctl(mib, 4, NULL, &needed, NULL, 0) == -1) {
166: if (errno == ENOPROTOOPT)
167: return;
168: err(1, "spd-sysctl-estimate");
169: }
170: if (needed > 0) {
171: if ((buf = malloc(needed)) == 0)
172: err(1, NULL);
173: if (sysctl(mib, 4, buf, &needed, NULL, 0) == -1)
174: err(1,"sysctl of spd");
175: lim = buf + needed;
176: }
177:
178: if (buf) {
179: printf("\nEncap:\n");
180:
181: for (next = buf; next < lim; next += msg->sadb_msg_len *
182: PFKEYV2_CHUNK) {
183: msg = (struct sadb_msg *)next;
184: if (msg->sadb_msg_len == 0)
185: break;
186: p_pfkentry(msg);
187: }
188: free(buf);
189: buf = NULL;
190: }
191: }
192:
193: /*
194: * column widths; each followed by one space
195: * width of destination/gateway column
196: * strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4
197: */
198: #define WID_DST(af) ((af) == AF_INET6 ? (nflag ? 34 : 18) : 18)
199: #define WID_GW(af) ((af) == AF_INET6 ? (nflag ? 30 : 18) : 18)
200:
201: /*
202: * Print header for routing table columns.
203: */
204: void
205: pr_rthdr(int af, int Aflag)
206: {
207: if (Aflag)
208: printf("%-*.*s ", PLEN, PLEN, "Address");
209: if (af != PF_KEY)
210: printf("%-*.*s %-*.*s %-6.6s %6.6s %8.8s %6.6s %s\n",
211: WID_DST(af), WID_DST(af), "Destination",
212: WID_GW(af), WID_GW(af), "Gateway",
213: "Flags", "Refs", "Use", "Mtu", "Interface");
214: else
215: printf("%-18s %-5s %-18s %-5s %-5s %-22s\n",
216: "Source", "Port", "Destination",
217: "Port", "Proto", "SA(Address/Proto/Type/Direction)");
218: }
219:
220: static void
221: get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info)
222: {
223: int i;
224:
225: for (i = 0; i < RTAX_MAX; i++) {
226: if (addrs & (1 << i)) {
227: rti_info[i] = sa;
228: sa = (struct sockaddr *)((char *)(sa) +
229: ROUNDUP(sa->sa_len));
230: } else
231: rti_info[i] = NULL;
232: }
233: }
234:
235: /*
236: * Print a routing table entry.
237: */
238: void
239: p_rtentry(struct rt_msghdr *rtm)
240: {
241: static int old_af = -1;
242: struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
243: struct sockaddr *mask, *rti_info[RTAX_MAX];
244: char ifbuf[IF_NAMESIZE];
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_address *saddr;
286: struct sadb_protocol *sap, *saft;
287: struct sockaddr *sa, *mask;
288: void *headers[SADB_EXT_MAX + 1];
289:
290: if (!old) {
291: pr_rthdr(PF_KEY, 0);
292: old++;
293: }
294:
295: bzero(headers, sizeof(headers));
296: index_pfk(msg, headers);
297:
298: /* These are always set */
299: saddr = headers[SADB_X_EXT_SRC_FLOW];
300: sa = (struct sockaddr *)(saddr + 1);
301: saddr = headers[SADB_X_EXT_SRC_MASK];
302: mask = (struct sockaddr *)(saddr + 1);
303: p_encap(sa, mask, WID_DST(sa->sa_family));
304:
305: /* These are always set, too. */
306: saddr = headers[SADB_X_EXT_DST_FLOW];
307: sa = (struct sockaddr *)(saddr + 1);
308: saddr = headers[SADB_X_EXT_DST_MASK];
309: mask = (struct sockaddr *)(saddr + 1);
310: p_encap(sa, mask, WID_DST(sa->sa_family));
311:
312: /* Bypass and deny flows do not set SADB_EXT_ADDRESS_DST! */
313: sap = headers[SADB_X_EXT_PROTOCOL];
314: saft = headers[SADB_X_EXT_FLOW_TYPE];
315: saddr = headers[SADB_EXT_ADDRESS_DST];
316: if (saddr)
317: sa = (struct sockaddr *)(saddr + 1);
318: else
319: sa = NULL;
320: p_protocol(sap, sa, saft, msg->sadb_msg_satype);
321:
322: printf("\n");
323: }
324:
325: /*
326: * Print address family header before a section of the routing table.
327: */
328: void
329: pr_family(int af)
330: {
331: char *afname;
332:
333: switch (af) {
334: case AF_INET:
335: afname = "Internet";
336: break;
337: case AF_INET6:
338: afname = "Internet6";
339: break;
340: case PF_KEY:
341: afname = "Encap";
342: break;
343: case AF_APPLETALK:
344: afname = "AppleTalk";
345: break;
346: default:
347: afname = NULL;
348: break;
349: }
350: if (afname)
351: printf("\n%s:\n", afname);
352: else
353: printf("\nProtocol Family %d:\n", af);
354: }
355:
356: void
357: p_addr(struct sockaddr *sa, struct sockaddr *mask, int flags)
358: {
359: p_sockaddr(sa, mask, flags, WID_DST(sa->sa_family));
360: }
361:
362: void
363: p_gwaddr(struct sockaddr *sa, int af)
364: {
365: p_sockaddr(sa, 0, RTF_HOST, WID_GW(af));
366: }
367:
368: void
369: p_encap(struct sockaddr *sa, struct sockaddr *mask, int width)
370: {
371: char *cp;
372: unsigned short port;
373:
1.2 todd 374: if (mask)
375: cp = netname(sa, mask);
376: else
377: cp = routename(sa);
1.1 claudio 378: switch (sa->sa_family) {
1.9 ! claudio 379: case AF_INET:
! 380: port = ntohs(((struct sockaddr_in *)sa)->sin_port);
! 381: break;
1.2 todd 382: case AF_INET6:
383: port = ntohs(((struct sockaddr_in6 *)sa)->sin6_port);
1.1 claudio 384: break;
385: }
386: if (width < 0)
387: printf("%s", cp);
388: else {
389: if (nflag)
390: printf("%-*s %-5u ", width, cp, port);
391: else
392: printf("%-*.*s %-5u ", width, width, cp, port);
393: }
394: }
395:
396: void
397: p_protocol(struct sadb_protocol *sap, struct sockaddr *sa, struct sadb_protocol
398: *saft, int proto)
399: {
400: printf("%-6u", sap->sadb_protocol_proto);
1.9 ! claudio 401:
1.1 claudio 402: if (sa)
403: p_sockaddr(sa, NULL, 0, -1);
404: else
405: printf("none");
406:
407: switch (proto) {
408: case SADB_SATYPE_ESP:
409: printf("/esp");
410: break;
411: case SADB_SATYPE_AH:
412: printf("/ah");
413: break;
414: case SADB_X_SATYPE_IPCOMP:
415: printf("/ipcomp");
416: break;
417: case SADB_X_SATYPE_IPIP:
418: printf("/ipip");
419: break;
420: default:
421: printf("/<unknown>");
422: }
423:
424: switch(saft->sadb_protocol_proto) {
425: case SADB_X_FLOW_TYPE_USE:
426: printf("/use");
427: break;
428: case SADB_X_FLOW_TYPE_REQUIRE:
429: printf("/require");
430: break;
431: case SADB_X_FLOW_TYPE_ACQUIRE:
432: printf("/acquire");
433: break;
434: case SADB_X_FLOW_TYPE_DENY:
435: printf("/deny");
436: break;
437: case SADB_X_FLOW_TYPE_BYPASS:
438: printf("/bypass");
439: break;
440: case SADB_X_FLOW_TYPE_DONTACQ:
441: printf("/dontacq");
442: break;
443: default:
444: printf("/<unknown type>");
445: }
446:
447: switch(saft->sadb_protocol_direction) {
448: case IPSP_DIRECTION_IN:
449: printf("/in");
450: break;
451: case IPSP_DIRECTION_OUT:
452: printf("/out");
453: break;
454: default:
455: printf("/<unknown>");
456: }
457: }
458:
459: void
460: p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width)
461: {
462: char *cp;
463:
464: switch (sa->sa_family) {
465: case AF_INET6:
466: {
467: struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa;
468: struct in6_addr *in6 = &sa6->sin6_addr;
469:
470: /*
471: * XXX: This is a special workaround for KAME kernels.
472: * sin6_scope_id field of SA should be set in the future.
473: */
474: if (IN6_IS_ADDR_LINKLOCAL(in6) ||
1.3 itojun 475: IN6_IS_ADDR_MC_LINKLOCAL(in6) ||
476: IN6_IS_ADDR_MC_INTFACELOCAL(in6)) {
1.1 claudio 477: /* XXX: override is ok? */
478: sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)
479: &in6->s6_addr[2]);
480: *(u_short *)&in6->s6_addr[2] = 0;
481: }
482: if (flags & RTF_HOST)
483: cp = routename((struct sockaddr *)sa6);
484: else
485: cp = netname((struct sockaddr *)sa6, mask);
486: break;
487: }
488: default:
489: if ((flags & RTF_HOST) || mask == NULL)
490: cp = routename(sa);
491: else
492: cp = netname(sa, mask);
493: break;
494: }
495: if (width < 0)
496: printf("%s", cp);
497: else {
498: if (nflag)
499: printf("%-*s ", width, cp);
500: else
501: printf("%-*.*s ", width, width, cp);
502: }
503: }
504:
505: void
506: p_flags(int f, char *format)
507: {
508: char name[33], *flags;
509: const struct bits *p = bits;
510:
511: for (flags = name; p->b_mask && flags < &name[sizeof(name) - 2]; p++)
512: if (p->b_mask & f)
513: *flags++ = p->b_val;
514: *flags = '\0';
515: printf(format, name);
516: }
517:
518: static char line[MAXHOSTNAMELEN];
519: static char domain[MAXHOSTNAMELEN];
520:
521: char *
522: routename(struct sockaddr *sa)
523: {
524: char *cp = NULL;
525: static int first = 1;
526:
527: if (first) {
528: first = 0;
529: if (gethostname(domain, sizeof(domain)) == 0 &&
530: (cp = strchr(domain, '.')))
531: (void)strlcpy(domain, cp + 1, sizeof(domain));
532: else
533: domain[0] = '\0';
534: cp = NULL;
535: }
536:
537: if (sa->sa_len == 0) {
538: (void)strlcpy(line, "default", sizeof(line));
539: return (line);
540: }
541:
542: switch (sa->sa_family) {
543: case AF_INET:
544: return
545: (routename4(((struct sockaddr_in *)sa)->sin_addr.s_addr));
546:
547: case AF_INET6:
548: {
549: struct sockaddr_in6 sin6;
550:
551: memset(&sin6, 0, sizeof(sin6));
552: memcpy(&sin6, sa, sa->sa_len);
553: sin6.sin6_len = sizeof(struct sockaddr_in6);
554: sin6.sin6_family = AF_INET6;
555: if (sa->sa_len == sizeof(struct sockaddr_in6) &&
556: (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
1.3 itojun 557: IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) ||
558: IN6_IS_ADDR_MC_INTFACELOCAL(&sin6.sin6_addr)) &&
1.1 claudio 559: sin6.sin6_scope_id == 0) {
560: sin6.sin6_scope_id =
561: ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
562: sin6.sin6_addr.s6_addr[2] = 0;
563: sin6.sin6_addr.s6_addr[3] = 0;
564: }
565: return (routename6(&sin6));
566: }
567:
568: case AF_LINK:
569: return (link_print(sa));
570:
571: case AF_UNSPEC:
572: if (sa->sa_len == sizeof(struct sockaddr_rtlabel)) {
573: static char name[RTLABEL_LEN];
574: struct sockaddr_rtlabel *sr;
575:
576: sr = (struct sockaddr_rtlabel *)sa;
1.9 ! claudio 577: (void)strlcpy(name, sr->sr_label, sizeof(name));
1.1 claudio 578: return (name);
579: }
580: /* FALLTHROUGH */
581: default:
582: (void)snprintf(line, sizeof(line), "(%d) %s",
583: sa->sa_family, any_ntoa(sa));
584: break;
585: }
586: return (line);
587: }
588:
589: char *
590: routename4(in_addr_t in)
591: {
592: char *cp = NULL;
593: struct in_addr ina;
594: struct hostent *hp;
595:
596: if (in == INADDR_ANY)
597: cp = "default";
598: if (!cp && !nflag) {
599: if ((hp = gethostbyaddr((char *)&in,
600: sizeof(in), AF_INET)) != NULL) {
601: if ((cp = strchr(hp->h_name, '.')) &&
602: !strcmp(cp + 1, domain))
603: *cp = '\0';
604: cp = hp->h_name;
605: }
606: }
607: ina.s_addr = in;
608: strlcpy(line, cp ? cp : inet_ntoa(ina), sizeof(line));
609:
610: return (line);
611: }
612:
613: char *
614: routename6(struct sockaddr_in6 *sin6)
615: {
616: int niflags = 0;
617:
618: if (nflag)
619: niflags |= NI_NUMERICHOST;
620: else
621: niflags |= NI_NOFQDN;
622:
623: if (getnameinfo((struct sockaddr *)sin6, sin6->sin6_len,
624: line, sizeof(line), NULL, 0, niflags) != 0)
625: strncpy(line, "invalid", sizeof(line));
626:
627: return (line);
628: }
629:
630: /*
631: * Return the name of the network whose address is given.
632: * The address is assumed to be that of a net or subnet, not a host.
633: */
634: char *
635: netname4(in_addr_t in, in_addr_t mask)
636: {
637: char *cp = NULL;
638: struct netent *np = NULL;
639: int mbits;
640:
641: in = ntohl(in);
642: mask = ntohl(mask);
643: if (!nflag && in != INADDR_ANY) {
644: if ((np = getnetbyaddr(in, AF_INET)) != NULL)
645: cp = np->n_name;
646: }
647: if (in == INADDR_ANY)
648: cp = "default";
649: mbits = mask ? 33 - ffs(mask) : 0;
650: if (cp)
651: strlcpy(line, cp, sizeof(line));
652: #define C(x) ((x) & 0xff)
653: else if (mbits < 9)
654: snprintf(line, sizeof(line), "%u/%d", C(in >> 24), mbits);
655: else if (mbits < 17)
656: snprintf(line, sizeof(line), "%u.%u/%d",
657: C(in >> 24) , C(in >> 16), mbits);
658: else if (mbits < 25)
659: snprintf(line, sizeof(line), "%u.%u.%u/%d",
660: C(in >> 24), C(in >> 16), C(in >> 8), mbits);
661: else
662: snprintf(line, sizeof(line), "%u.%u.%u.%u/%d", C(in >> 24),
663: C(in >> 16), C(in >> 8), C(in), mbits);
664: #undef C
665: return (line);
666: }
667:
668: char *
669: netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask)
670: {
671: struct sockaddr_in6 sin6;
672: u_char *p;
673: int masklen, final = 0, illegal = 0;
674: int i, lim, flag, error;
675: char hbuf[NI_MAXHOST];
676:
677: sin6 = *sa6;
678:
679: flag = 0;
680: masklen = 0;
681: if (mask) {
682: lim = mask->sin6_len - offsetof(struct sockaddr_in6, sin6_addr);
1.4 claudio 683: lim = lim < (int)sizeof(struct in6_addr) ?
1.1 claudio 684: lim : sizeof(struct in6_addr);
685: for (p = (u_char *)&mask->sin6_addr, i = 0; i < lim; p++) {
686: if (final && *p) {
687: illegal++;
688: sin6.sin6_addr.s6_addr[i++] = 0x00;
689: continue;
690: }
691:
692: switch (*p & 0xff) {
693: case 0xff:
694: masklen += 8;
695: break;
696: case 0xfe:
697: masklen += 7;
698: final++;
699: break;
700: case 0xfc:
701: masklen += 6;
702: final++;
703: break;
704: case 0xf8:
705: masklen += 5;
706: final++;
707: break;
708: case 0xf0:
709: masklen += 4;
710: final++;
711: break;
712: case 0xe0:
713: masklen += 3;
714: final++;
715: break;
716: case 0xc0:
717: masklen += 2;
718: final++;
719: break;
720: case 0x80:
721: masklen += 1;
722: final++;
723: break;
724: case 0x00:
725: final++;
726: break;
727: default:
728: final++;
729: illegal++;
730: break;
731: }
732:
733: if (!illegal)
734: sin6.sin6_addr.s6_addr[i++] &= *p;
735: else
736: sin6.sin6_addr.s6_addr[i++] = 0x00;
737: }
738: while (i < sizeof(struct in6_addr))
739: sin6.sin6_addr.s6_addr[i++] = 0x00;
740: } else
741: masklen = 128;
742:
743: if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr))
744: return ("default");
745:
746: if (illegal)
747: warnx("illegal prefixlen");
748:
749: if (nflag)
750: flag |= NI_NUMERICHOST;
751: error = getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
752: hbuf, sizeof(hbuf), NULL, 0, flag);
753: if (error)
754: snprintf(hbuf, sizeof(hbuf), "invalid");
755:
756: snprintf(line, sizeof(line), "%s/%d", hbuf, masklen);
757: return (line);
758: }
759:
760: /*
761: * Return the name of the network whose address is given.
762: * The address is assumed to be that of a net or subnet, not a host.
763: */
764: char *
765: netname(struct sockaddr *sa, struct sockaddr *mask)
766: {
767: switch (sa->sa_family) {
768:
769: case AF_INET:
770: return netname4(((struct sockaddr_in *)sa)->sin_addr.s_addr,
771: ((struct sockaddr_in *)mask)->sin_addr.s_addr);
772: case AF_INET6:
773: return netname6((struct sockaddr_in6 *)sa,
774: (struct sockaddr_in6 *)mask);
775: case AF_LINK:
776: return (link_print(sa));
777: default:
778: snprintf(line, sizeof(line), "af %d: %s",
779: sa->sa_family, any_ntoa(sa));
780: break;
781: }
782: return (line);
783: }
784:
785: static const char hexlist[] = "0123456789abcdef";
786:
787: char *
788: any_ntoa(const struct sockaddr *sa)
789: {
790: static char obuf[240];
791: const char *in = sa->sa_data;
792: char *out = obuf;
793: int len = sa->sa_len - offsetof(struct sockaddr, sa_data);
794:
795: *out++ = 'Q';
796: do {
797: *out++ = hexlist[(*in >> 4) & 15];
798: *out++ = hexlist[(*in++) & 15];
799: *out++ = '.';
800: } while (--len > 0 && (out + 3) < &obuf[sizeof(obuf) - 1]);
801: out[-1] = '\0';
802: return (obuf);
803: }
804:
805: char *
806: link_print(struct sockaddr *sa)
807: {
808: struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
809: u_char *lla = (u_char *)sdl->sdl_data + sdl->sdl_nlen;
810:
811: if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
812: sdl->sdl_slen == 0) {
813: (void)snprintf(line, sizeof(line), "link#%d", sdl->sdl_index);
814: return (line);
815: }
816: switch (sdl->sdl_type) {
817: case IFT_ETHER:
818: case IFT_CARP:
819: return (ether_ntoa((struct ether_addr *)lla));
820: default:
821: return (link_ntoa(sdl));
822: }
823: }
824:
825: void
826: index_pfk(struct sadb_msg *msg, void **headers)
827: {
828: struct sadb_ext *ext;
829:
830: for (ext = (struct sadb_ext *)(msg + 1);
831: (size_t)((u_int8_t *)ext - (u_int8_t *)msg) <
832: msg->sadb_msg_len * PFKEYV2_CHUNK && ext->sadb_ext_len > 0;
833: ext = (struct sadb_ext *)((u_int8_t *)ext +
834: ext->sadb_ext_len * PFKEYV2_CHUNK)) {
835: switch (ext->sadb_ext_type) {
836: case SADB_EXT_ADDRESS_SRC:
837: headers[SADB_EXT_ADDRESS_SRC] = (void *)ext;
838: break;
839: case SADB_EXT_ADDRESS_DST:
840: headers[SADB_EXT_ADDRESS_DST] = (void *)ext;
841: break;
842: case SADB_X_EXT_PROTOCOL:
843: headers[SADB_X_EXT_PROTOCOL] = (void *)ext;
844: break;
845: case SADB_X_EXT_SRC_FLOW:
846: headers[SADB_X_EXT_SRC_FLOW] = (void *)ext;
847: break;
848: case SADB_X_EXT_DST_FLOW:
849: headers[SADB_X_EXT_DST_FLOW] = (void *)ext;
850: break;
851: case SADB_X_EXT_SRC_MASK:
852: headers[SADB_X_EXT_SRC_MASK] = (void *)ext;
853: break;
854: case SADB_X_EXT_DST_MASK:
855: headers[SADB_X_EXT_DST_MASK] = (void *)ext;
856: break;
857: case SADB_X_EXT_FLOW_TYPE:
858: headers[SADB_X_EXT_FLOW_TYPE] = (void *)ext;
859: default:
860: /* Ignore. */
861: break;
862: }
863: }
864: }