Annotation of src/usr.bin/netstat/show.c, Revision 1.49
1.49 ! mpi 1: /* $OpenBSD: show.c,v 1.48 2015/04/27 09:54:04 benno 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/socket.h>
34: #include <sys/sysctl.h>
35:
36: #include <net/if.h>
37: #include <net/if_dl.h>
38: #include <net/if_types.h>
39: #include <net/route.h>
40: #include <netinet/in.h>
41: #include <netinet/if_ether.h>
1.13 claudio 42: #include <netmpls/mpls.h>
1.1 claudio 43: #include <arpa/inet.h>
44:
45: #include <err.h>
46: #include <errno.h>
47: #include <netdb.h>
48: #include <stdio.h>
49: #include <stddef.h>
50: #include <stdlib.h>
51: #include <string.h>
52: #include <unistd.h>
1.44 deraadt 53: #include <limits.h>
1.1 claudio 54:
55: #include "netstat.h"
56:
57: char *any_ntoa(const struct sockaddr *);
58: char *link_print(struct sockaddr *);
1.30 claudio 59: char *label_print(struct sockaddr *);
1.1 claudio 60:
61: #define ROUNDUP(a) \
62: ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
63: #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
64:
65: /*
66: * Definitions for showing gateway flags.
67: */
68: struct bits {
69: int b_mask;
70: char b_val;
71: };
72: static const struct bits bits[] = {
73: { RTF_UP, 'U' },
74: { RTF_GATEWAY, 'G' },
75: { RTF_HOST, 'H' },
76: { RTF_REJECT, 'R' },
77: { RTF_BLACKHOLE, 'B' },
78: { RTF_DYNAMIC, 'D' },
79: { RTF_MODIFIED, 'M' },
80: { RTF_DONE, 'd' }, /* Completed -- for routing messages only */
81: { RTF_MASK, 'm' }, /* Mask Present -- for routing messages only */
82: { RTF_CLONING, 'C' },
83: { RTF_LLINFO, 'L' },
84: { RTF_STATIC, 'S' },
85: { RTF_PROTO1, '1' },
86: { RTF_PROTO2, '2' },
87: { RTF_PROTO3, '3' },
88: { RTF_CLONED, 'c' },
1.18 claudio 89: { RTF_MPATH, 'P' },
1.25 michele 90: { RTF_MPLS, 'T' },
1.42 mpi 91: { RTF_LOCAL, 'l' },
92: { RTF_BROADCAST, 'b' },
1.1 claudio 93: { 0 }
94: };
95:
1.41 claudio 96: int WID_DST(int);
1.1 claudio 97: void p_rtentry(struct rt_msghdr *);
98: void pr_family(int);
99: void p_sockaddr(struct sockaddr *, struct sockaddr *, int, int);
1.17 michele 100: void p_sockaddr_mpls(struct sockaddr *, struct sockaddr *, int, int);
1.1 claudio 101: void p_flags(int, char *);
102: char *routename4(in_addr_t);
103: char *routename6(struct sockaddr_in6 *);
104:
1.46 claudio 105: size_t
106: get_sysctl(const int *mib, u_int mcnt, char **buf)
107: {
108: size_t needed;
109:
110: while (1) {
111: if (sysctl(mib, mcnt, NULL, &needed, NULL, 0) == -1)
112: err(1, "sysctl-estimate");
113: if (needed == 0)
114: break;
115: if ((*buf = realloc(*buf, needed)) == NULL)
116: err(1, NULL);
117: if (sysctl(mib, mcnt, *buf, &needed, NULL, 0) == -1) {
118: if (errno == ENOMEM)
119: continue;
120: err(1, "sysctl");
121: }
122: break;
123: }
124:
125: return needed;
126: }
127:
1.1 claudio 128: /*
129: * Print routing tables.
130: */
131: void
1.35 mikeb 132: p_rttables(int af, u_int tableid)
1.1 claudio 133: {
134: struct rt_msghdr *rtm;
135: char *buf = NULL, *next, *lim = NULL;
136: size_t needed;
1.34 claudio 137: int mib[7], mcnt;
1.1 claudio 138: struct sockaddr *sa;
139:
140: mib[0] = CTL_NET;
141: mib[1] = PF_ROUTE;
142: mib[2] = 0;
143: mib[3] = af;
144: mib[4] = NET_RT_DUMP;
145: mib[5] = 0;
1.35 mikeb 146: mib[6] = tableid;
147: mcnt = 7;
1.46 claudio 148:
149: needed = get_sysctl(mib, mcnt, &buf);
150: lim = buf + needed;
1.1 claudio 151:
152: printf("Routing tables\n");
153:
154: if (buf) {
155: for (next = buf; next < lim; next += rtm->rtm_msglen) {
156: rtm = (struct rt_msghdr *)next;
1.8 claudio 157: if (rtm->rtm_version != RTM_VERSION)
158: continue;
1.23 chris 159: sa = (struct sockaddr *)(next + rtm->rtm_hdrlen);
1.1 claudio 160: p_rtentry(rtm);
161: }
162: }
1.47 claudio 163: free(buf);
1.1 claudio 164: }
165:
1.12 deraadt 166: /*
1.1 claudio 167: * column widths; each followed by one space
168: * width of destination/gateway column
169: * strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4
170: */
171: #define WID_GW(af) ((af) == AF_INET6 ? (nflag ? 30 : 18) : 18)
172:
1.41 claudio 173: int
1.13 claudio 174: WID_DST(int af)
175: {
176:
177: if (nflag)
178: switch (af) {
179: case AF_MPLS:
1.30 claudio 180: return 9;
1.13 claudio 181: case AF_INET6:
182: return 34;
183: default:
184: return 18;
185: }
186: else
187: switch (af) {
188: case AF_MPLS:
1.30 claudio 189: return 9;
1.13 claudio 190: default:
191: return 18;
192: }
193: }
194:
1.1 claudio 195: /*
196: * Print header for routing table columns.
197: */
198: void
199: pr_rthdr(int af, int Aflag)
200: {
201: if (Aflag)
202: printf("%-*.*s ", PLEN, PLEN, "Address");
1.13 claudio 203: switch (af) {
204: case PF_KEY:
1.1 claudio 205: printf("%-18s %-5s %-18s %-5s %-5s %-22s\n",
206: "Source", "Port", "Destination",
207: "Port", "Proto", "SA(Address/Proto/Type/Direction)");
1.13 claudio 208: break;
209: case PF_MPLS:
1.30 claudio 210: printf("%-9s %-9s %-6s %-18s %-6.6s %5.5s %8.8s %5.5s %4.4s %s\n",
1.13 claudio 211: "In label", "Out label", "Op", "Gateway",
212: "Flags", "Refs", "Use", "Mtu", "Prio", "Interface");
213: break;
214: default:
1.32 bluhm 215: printf("%-*.*s %-*.*s %-6.6s %5.5s %8.8s %5.5s %4.4s %s",
1.13 claudio 216: WID_DST(af), WID_DST(af), "Destination",
217: WID_GW(af), WID_GW(af), "Gateway",
218: "Flags", "Refs", "Use", "Mtu", "Prio", "Iface");
1.33 bluhm 219: if (vflag && !Aflag)
1.32 bluhm 220: printf(" %s", "Label");
221: putchar('\n');
1.13 claudio 222: break;
223: }
1.1 claudio 224: }
225:
226: static void
227: get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info)
228: {
229: int i;
230:
231: for (i = 0; i < RTAX_MAX; i++) {
232: if (addrs & (1 << i)) {
233: rti_info[i] = sa;
234: sa = (struct sockaddr *)((char *)(sa) +
235: ROUNDUP(sa->sa_len));
236: } else
237: rti_info[i] = NULL;
238: }
239: }
240:
241: /*
242: * Print a routing table entry.
243: */
244: void
245: p_rtentry(struct rt_msghdr *rtm)
246: {
247: static int old_af = -1;
1.22 chris 248: struct sockaddr *sa = (struct sockaddr *)((char *)rtm + rtm->rtm_hdrlen);
1.1 claudio 249: struct sockaddr *mask, *rti_info[RTAX_MAX];
250: char ifbuf[IF_NAMESIZE];
251:
252: if (sa->sa_family == AF_KEY)
253: return;
254:
1.5 pyr 255: get_rtaddrs(rtm->rtm_addrs, sa, rti_info);
1.41 claudio 256:
1.5 pyr 257: if (Fflag && rti_info[RTAX_GATEWAY]->sa_family != sa->sa_family) {
258: return;
259: }
1.1 claudio 260: if (old_af != sa->sa_family) {
261: old_af = sa->sa_family;
262: pr_family(sa->sa_family);
263: pr_rthdr(sa->sa_family, 0);
264: }
265:
266: mask = rti_info[RTAX_NETMASK];
267: if ((sa = rti_info[RTAX_DST]) == NULL)
268: return;
269:
270: p_sockaddr(sa, mask, rtm->rtm_flags, WID_DST(sa->sa_family));
1.19 michele 271: p_sockaddr_mpls(sa, rti_info[RTAX_SRC], rtm->rtm_mpls,
1.17 michele 272: WID_DST(sa->sa_family));
273:
1.1 claudio 274: p_sockaddr(rti_info[RTAX_GATEWAY], NULL, RTF_HOST,
275: WID_GW(sa->sa_family));
1.30 claudio 276:
1.1 claudio 277: p_flags(rtm->rtm_flags, "%-6.6s ");
1.13 claudio 278: printf("%5u %8llu ", rtm->rtm_rmx.rmx_refcnt,
1.1 claudio 279: rtm->rtm_rmx.rmx_pksent);
280: if (rtm->rtm_rmx.rmx_mtu)
1.13 claudio 281: printf("%5u ", rtm->rtm_rmx.rmx_mtu);
1.1 claudio 282: else
1.13 claudio 283: printf("%5s ", "-");
1.1 claudio 284: putchar((rtm->rtm_rmx.rmx_locks & RTV_MTU) ? 'L' : ' ');
1.32 bluhm 285: printf(" %2d %-5.16s", rtm->rtm_priority,
1.13 claudio 286: if_indextoname(rtm->rtm_index, ifbuf));
1.32 bluhm 287: if (vflag && rti_info[RTAX_LABEL])
288: printf(" %s", ((struct sockaddr_rtlabel *)
289: rti_info[RTAX_LABEL])->sr_label);
1.1 claudio 290: putchar('\n');
291: }
292:
293: /*
294: * Print address family header before a section of the routing table.
295: */
296: void
297: pr_family(int af)
298: {
299: char *afname;
300:
301: switch (af) {
302: case AF_INET:
303: afname = "Internet";
304: break;
305: case AF_INET6:
306: afname = "Internet6";
307: break;
308: case PF_KEY:
309: afname = "Encap";
310: break;
1.13 claudio 311: case AF_MPLS:
312: afname = "MPLS";
313: break;
1.1 claudio 314: default:
315: afname = NULL;
316: break;
317: }
318: if (afname)
319: printf("\n%s:\n", afname);
320: else
321: printf("\nProtocol Family %d:\n", af);
322: }
323:
324: void
325: p_addr(struct sockaddr *sa, struct sockaddr *mask, int flags)
326: {
327: p_sockaddr(sa, mask, flags, WID_DST(sa->sa_family));
328: }
329:
330: void
331: p_gwaddr(struct sockaddr *sa, int af)
332: {
333: p_sockaddr(sa, 0, RTF_HOST, WID_GW(af));
334: }
335:
336: void
337: p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width)
338: {
339: char *cp;
340:
341: switch (sa->sa_family) {
342: case AF_INET6:
343: {
344: struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa;
345: struct in6_addr *in6 = &sa6->sin6_addr;
346:
347: /*
348: * XXX: This is a special workaround for KAME kernels.
349: * sin6_scope_id field of SA should be set in the future.
350: */
351: if (IN6_IS_ADDR_LINKLOCAL(in6) ||
1.3 itojun 352: IN6_IS_ADDR_MC_LINKLOCAL(in6) ||
353: IN6_IS_ADDR_MC_INTFACELOCAL(in6)) {
1.1 claudio 354: /* XXX: override is ok? */
355: sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)
356: &in6->s6_addr[2]);
357: *(u_short *)&in6->s6_addr[2] = 0;
358: }
359: if (flags & RTF_HOST)
360: cp = routename((struct sockaddr *)sa6);
361: else
362: cp = netname((struct sockaddr *)sa6, mask);
363: break;
364: }
1.16 michele 365: case AF_MPLS:
1.17 michele 366: return;
1.1 claudio 367: default:
368: if ((flags & RTF_HOST) || mask == NULL)
369: cp = routename(sa);
370: else
371: cp = netname(sa, mask);
372: break;
373: }
374: if (width < 0)
375: printf("%s", cp);
376: else {
377: if (nflag)
378: printf("%-*s ", width, cp);
379: else
380: printf("%-*.*s ", width, width, cp);
381: }
382: }
383:
1.44 deraadt 384: static char line[HOST_NAME_MAX+1];
385: static char domain[HOST_NAME_MAX+1];
1.17 michele 386:
387: void
388: p_sockaddr_mpls(struct sockaddr *in, struct sockaddr *out, int flags, int width)
389: {
390: if (in->sa_family != AF_MPLS)
391: return;
392:
1.30 claudio 393: if (flags & MPLS_OP_POP || flags == MPLS_OP_LOCAL) {
394: printf("%-*s ", width, label_print(in));
395: printf("%-*s ", width, label_print(NULL));
396: } else {
397: printf("%-*s ", width, label_print(in));
398: printf("%-*s ", width, label_print(out));
399: }
1.17 michele 400:
1.30 claudio 401: printf("%-6s ", mpls_op(flags));
1.17 michele 402: }
403:
1.1 claudio 404: void
405: p_flags(int f, char *format)
406: {
407: char name[33], *flags;
408: const struct bits *p = bits;
409:
410: for (flags = name; p->b_mask && flags < &name[sizeof(name) - 2]; p++)
411: if (p->b_mask & f)
412: *flags++ = p->b_val;
413: *flags = '\0';
414: printf(format, name);
415: }
416:
417: char *
418: routename(struct sockaddr *sa)
419: {
420: char *cp = NULL;
421: static int first = 1;
422:
423: if (first) {
424: first = 0;
425: if (gethostname(domain, sizeof(domain)) == 0 &&
426: (cp = strchr(domain, '.')))
427: (void)strlcpy(domain, cp + 1, sizeof(domain));
428: else
429: domain[0] = '\0';
430: cp = NULL;
431: }
432:
433: if (sa->sa_len == 0) {
434: (void)strlcpy(line, "default", sizeof(line));
435: return (line);
436: }
437:
438: switch (sa->sa_family) {
439: case AF_INET:
440: return
441: (routename4(((struct sockaddr_in *)sa)->sin_addr.s_addr));
442:
443: case AF_INET6:
444: {
445: struct sockaddr_in6 sin6;
446:
447: memset(&sin6, 0, sizeof(sin6));
448: memcpy(&sin6, sa, sa->sa_len);
449: sin6.sin6_len = sizeof(struct sockaddr_in6);
450: sin6.sin6_family = AF_INET6;
451: if (sa->sa_len == sizeof(struct sockaddr_in6) &&
452: (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
1.3 itojun 453: IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) ||
454: IN6_IS_ADDR_MC_INTFACELOCAL(&sin6.sin6_addr)) &&
1.1 claudio 455: sin6.sin6_scope_id == 0) {
456: sin6.sin6_scope_id =
457: ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
458: sin6.sin6_addr.s6_addr[2] = 0;
459: sin6.sin6_addr.s6_addr[3] = 0;
460: }
461: return (routename6(&sin6));
462: }
463:
464: case AF_LINK:
465: return (link_print(sa));
1.13 claudio 466: case AF_MPLS:
1.30 claudio 467: return (label_print(sa));
1.1 claudio 468: case AF_UNSPEC:
469: if (sa->sa_len == sizeof(struct sockaddr_rtlabel)) {
470: static char name[RTLABEL_LEN];
471: struct sockaddr_rtlabel *sr;
472:
473: sr = (struct sockaddr_rtlabel *)sa;
1.9 claudio 474: (void)strlcpy(name, sr->sr_label, sizeof(name));
1.1 claudio 475: return (name);
476: }
477: /* FALLTHROUGH */
478: default:
479: (void)snprintf(line, sizeof(line), "(%d) %s",
480: sa->sa_family, any_ntoa(sa));
481: break;
482: }
483: return (line);
484: }
485:
486: char *
487: routename4(in_addr_t in)
488: {
489: char *cp = NULL;
490: struct in_addr ina;
491: struct hostent *hp;
492:
493: if (in == INADDR_ANY)
494: cp = "default";
495: if (!cp && !nflag) {
496: if ((hp = gethostbyaddr((char *)&in,
497: sizeof(in), AF_INET)) != NULL) {
498: if ((cp = strchr(hp->h_name, '.')) &&
499: !strcmp(cp + 1, domain))
500: *cp = '\0';
501: cp = hp->h_name;
502: }
503: }
504: ina.s_addr = in;
505: strlcpy(line, cp ? cp : inet_ntoa(ina), sizeof(line));
506:
507: return (line);
508: }
509:
510: char *
511: routename6(struct sockaddr_in6 *sin6)
512: {
513: int niflags = 0;
514:
515: if (nflag)
516: niflags |= NI_NUMERICHOST;
517: else
518: niflags |= NI_NOFQDN;
519:
520: if (getnameinfo((struct sockaddr *)sin6, sin6->sin6_len,
521: line, sizeof(line), NULL, 0, niflags) != 0)
522: strncpy(line, "invalid", sizeof(line));
523:
524: return (line);
525: }
526:
527: /*
528: * Return the name of the network whose address is given.
529: * The address is assumed to be that of a net or subnet, not a host.
530: */
531: char *
532: netname4(in_addr_t in, in_addr_t mask)
533: {
534: int mbits;
535:
536: in = ntohl(in);
537: mask = ntohl(mask);
1.43 schwarze 538: mbits = mask ? 33 - ffs(mask) : 0;
1.28 dlg 539: if (in == INADDR_ANY && mask == INADDR_ANY)
1.43 schwarze 540: strlcpy(line, "default", sizeof(line));
1.1 claudio 541: #define C(x) ((x) & 0xff)
542: else if (mbits < 9)
543: snprintf(line, sizeof(line), "%u/%d", C(in >> 24), mbits);
544: else if (mbits < 17)
545: snprintf(line, sizeof(line), "%u.%u/%d",
546: C(in >> 24) , C(in >> 16), mbits);
547: else if (mbits < 25)
548: snprintf(line, sizeof(line), "%u.%u.%u/%d",
549: C(in >> 24), C(in >> 16), C(in >> 8), mbits);
550: else
551: snprintf(line, sizeof(line), "%u.%u.%u.%u/%d", C(in >> 24),
552: C(in >> 16), C(in >> 8), C(in), mbits);
553: #undef C
554: return (line);
555: }
556:
557: char *
558: netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask)
559: {
560: struct sockaddr_in6 sin6;
561: u_char *p;
562: int masklen, final = 0, illegal = 0;
563: int i, lim, flag, error;
564: char hbuf[NI_MAXHOST];
565:
566: sin6 = *sa6;
567:
568: flag = 0;
569: masklen = 0;
570: if (mask) {
571: lim = mask->sin6_len - offsetof(struct sockaddr_in6, sin6_addr);
1.4 claudio 572: lim = lim < (int)sizeof(struct in6_addr) ?
1.41 claudio 573: lim : (int)sizeof(struct in6_addr);
1.1 claudio 574: for (p = (u_char *)&mask->sin6_addr, i = 0; i < lim; p++) {
575: if (final && *p) {
576: illegal++;
577: sin6.sin6_addr.s6_addr[i++] = 0x00;
578: continue;
579: }
580:
581: switch (*p & 0xff) {
582: case 0xff:
583: masklen += 8;
584: break;
585: case 0xfe:
586: masklen += 7;
587: final++;
588: break;
589: case 0xfc:
590: masklen += 6;
591: final++;
592: break;
593: case 0xf8:
594: masklen += 5;
595: final++;
596: break;
597: case 0xf0:
598: masklen += 4;
599: final++;
600: break;
601: case 0xe0:
602: masklen += 3;
603: final++;
604: break;
605: case 0xc0:
606: masklen += 2;
607: final++;
608: break;
609: case 0x80:
610: masklen += 1;
611: final++;
612: break;
613: case 0x00:
614: final++;
615: break;
616: default:
617: final++;
618: illegal++;
619: break;
620: }
621:
622: if (!illegal)
623: sin6.sin6_addr.s6_addr[i++] &= *p;
624: else
625: sin6.sin6_addr.s6_addr[i++] = 0x00;
626: }
1.41 claudio 627: while (i < (int)sizeof(struct in6_addr))
1.1 claudio 628: sin6.sin6_addr.s6_addr[i++] = 0x00;
629: } else
630: masklen = 128;
631:
632: if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr))
633: return ("default");
634:
635: if (illegal)
636: warnx("illegal prefixlen");
637:
638: if (nflag)
639: flag |= NI_NUMERICHOST;
640: error = getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
641: hbuf, sizeof(hbuf), NULL, 0, flag);
642: if (error)
643: snprintf(hbuf, sizeof(hbuf), "invalid");
644:
645: snprintf(line, sizeof(line), "%s/%d", hbuf, masklen);
646: return (line);
647: }
648:
649: /*
650: * Return the name of the network whose address is given.
651: * The address is assumed to be that of a net or subnet, not a host.
652: */
653: char *
654: netname(struct sockaddr *sa, struct sockaddr *mask)
655: {
656: switch (sa->sa_family) {
657: case AF_INET:
658: return netname4(((struct sockaddr_in *)sa)->sin_addr.s_addr,
1.29 claudio 659: mask->sa_len == 0 ? 0 :
1.1 claudio 660: ((struct sockaddr_in *)mask)->sin_addr.s_addr);
661: case AF_INET6:
662: return netname6((struct sockaddr_in6 *)sa,
663: (struct sockaddr_in6 *)mask);
664: case AF_LINK:
665: return (link_print(sa));
1.13 claudio 666: case AF_MPLS:
1.30 claudio 667: return (label_print(sa));
1.1 claudio 668: default:
669: snprintf(line, sizeof(line), "af %d: %s",
670: sa->sa_family, any_ntoa(sa));
671: break;
672: }
673: return (line);
674: }
675:
676: static const char hexlist[] = "0123456789abcdef";
677:
678: char *
679: any_ntoa(const struct sockaddr *sa)
680: {
681: static char obuf[240];
682: const char *in = sa->sa_data;
683: char *out = obuf;
684: int len = sa->sa_len - offsetof(struct sockaddr, sa_data);
685:
686: *out++ = 'Q';
687: do {
688: *out++ = hexlist[(*in >> 4) & 15];
689: *out++ = hexlist[(*in++) & 15];
690: *out++ = '.';
691: } while (--len > 0 && (out + 3) < &obuf[sizeof(obuf) - 1]);
692: out[-1] = '\0';
693: return (obuf);
694: }
695:
696: char *
697: link_print(struct sockaddr *sa)
698: {
699: struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
700: u_char *lla = (u_char *)sdl->sdl_data + sdl->sdl_nlen;
701:
702: if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
703: sdl->sdl_slen == 0) {
704: (void)snprintf(line, sizeof(line), "link#%d", sdl->sdl_index);
705: return (line);
706: }
707: switch (sdl->sdl_type) {
708: case IFT_ETHER:
709: case IFT_CARP:
710: return (ether_ntoa((struct ether_addr *)lla));
711: default:
712: return (link_ntoa(sdl));
713: }
1.13 claudio 714: }
715:
716: char *
1.30 claudio 717: mpls_op(u_int32_t type)
1.13 claudio 718: {
1.16 michele 719: switch (type & (MPLS_OP_PUSH | MPLS_OP_POP | MPLS_OP_SWAP)) {
1.21 michele 720: case MPLS_OP_LOCAL:
721: return ("LOCAL");
1.13 claudio 722: case MPLS_OP_POP:
723: return ("POP");
724: case MPLS_OP_SWAP:
725: return ("SWAP");
726: case MPLS_OP_PUSH:
727: return ("PUSH");
728: default:
729: return ("?");
730: }
731: }
732:
733: char *
1.30 claudio 734: label_print(struct sockaddr *sa)
1.13 claudio 735: {
1.30 claudio 736: struct sockaddr_mpls *smpls = (struct sockaddr_mpls *)sa;
1.13 claudio 737:
1.30 claudio 738: if (smpls)
739: (void)snprintf(line, sizeof(line), "%u",
740: ntohl(smpls->smpls_label) >> MPLS_LABEL_OFFSET);
741: else
742: (void)snprintf(line, sizeof(line), "-");
1.13 claudio 743:
744: return (line);
1.1 claudio 745: }
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