Annotation of src/usr.bin/netstat/show.c, Revision 1.48
1.48 ! benno 1: /* $OpenBSD: show.c,v 1.47 2015/02/12 23:31:12 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/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_XRESOLVE, 'X' },
84: { RTF_LLINFO, 'L' },
85: { RTF_STATIC, 'S' },
86: { RTF_PROTO1, '1' },
87: { RTF_PROTO2, '2' },
88: { RTF_PROTO3, '3' },
89: { RTF_CLONED, 'c' },
1.18 claudio 90: { RTF_MPATH, 'P' },
1.25 michele 91: { RTF_MPLS, 'T' },
1.42 mpi 92: { RTF_LOCAL, 'l' },
93: { RTF_BROADCAST, 'b' },
1.1 claudio 94: { 0 }
95: };
96:
1.41 claudio 97: int WID_DST(int);
1.1 claudio 98: void p_rtentry(struct rt_msghdr *);
99: void pr_family(int);
100: void p_sockaddr(struct sockaddr *, struct sockaddr *, int, int);
1.17 michele 101: void p_sockaddr_mpls(struct sockaddr *, struct sockaddr *, int, int);
1.1 claudio 102: void p_flags(int, char *);
103: char *routename4(in_addr_t);
104: char *routename6(struct sockaddr_in6 *);
105:
1.46 claudio 106: size_t
107: get_sysctl(const int *mib, u_int mcnt, char **buf)
108: {
109: size_t needed;
110:
111: while (1) {
112: if (sysctl(mib, mcnt, NULL, &needed, NULL, 0) == -1)
113: err(1, "sysctl-estimate");
114: if (needed == 0)
115: break;
116: if ((*buf = realloc(*buf, needed)) == NULL)
117: err(1, NULL);
118: if (sysctl(mib, mcnt, *buf, &needed, NULL, 0) == -1) {
119: if (errno == ENOMEM)
120: continue;
121: err(1, "sysctl");
122: }
123: break;
124: }
125:
126: return needed;
127: }
128:
1.1 claudio 129: /*
130: * Print routing tables.
131: */
132: void
1.35 mikeb 133: p_rttables(int af, u_int tableid)
1.1 claudio 134: {
135: struct rt_msghdr *rtm;
136: char *buf = NULL, *next, *lim = NULL;
137: size_t needed;
1.34 claudio 138: int mib[7], mcnt;
1.1 claudio 139: struct sockaddr *sa;
140:
141: mib[0] = CTL_NET;
142: mib[1] = PF_ROUTE;
143: mib[2] = 0;
144: mib[3] = af;
145: mib[4] = NET_RT_DUMP;
146: mib[5] = 0;
1.35 mikeb 147: mib[6] = tableid;
148: mcnt = 7;
1.46 claudio 149:
150: needed = get_sysctl(mib, mcnt, &buf);
151: lim = buf + needed;
1.1 claudio 152:
153: printf("Routing tables\n");
154:
155: if (buf) {
156: for (next = buf; next < lim; next += rtm->rtm_msglen) {
157: rtm = (struct rt_msghdr *)next;
1.8 claudio 158: if (rtm->rtm_version != RTM_VERSION)
159: continue;
1.23 chris 160: sa = (struct sockaddr *)(next + rtm->rtm_hdrlen);
1.1 claudio 161: p_rtentry(rtm);
162: }
163: }
1.47 claudio 164: free(buf);
1.1 claudio 165: }
166:
1.12 deraadt 167: /*
1.1 claudio 168: * column widths; each followed by one space
169: * width of destination/gateway column
170: * strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4
171: */
172: #define WID_GW(af) ((af) == AF_INET6 ? (nflag ? 30 : 18) : 18)
173:
1.41 claudio 174: int
1.13 claudio 175: WID_DST(int af)
176: {
177:
178: if (nflag)
179: switch (af) {
180: case AF_MPLS:
1.30 claudio 181: return 9;
1.13 claudio 182: case AF_INET6:
183: return 34;
184: default:
185: return 18;
186: }
187: else
188: switch (af) {
189: case AF_MPLS:
1.30 claudio 190: return 9;
1.13 claudio 191: default:
192: return 18;
193: }
194: }
195:
1.1 claudio 196: /*
197: * Print header for routing table columns.
198: */
199: void
200: pr_rthdr(int af, int Aflag)
201: {
202: if (Aflag)
203: printf("%-*.*s ", PLEN, PLEN, "Address");
1.13 claudio 204: switch (af) {
205: case PF_KEY:
1.1 claudio 206: printf("%-18s %-5s %-18s %-5s %-5s %-22s\n",
207: "Source", "Port", "Destination",
208: "Port", "Proto", "SA(Address/Proto/Type/Direction)");
1.13 claudio 209: break;
210: case PF_MPLS:
1.30 claudio 211: printf("%-9s %-9s %-6s %-18s %-6.6s %5.5s %8.8s %5.5s %4.4s %s\n",
1.13 claudio 212: "In label", "Out label", "Op", "Gateway",
213: "Flags", "Refs", "Use", "Mtu", "Prio", "Interface");
214: break;
215: default:
1.32 bluhm 216: printf("%-*.*s %-*.*s %-6.6s %5.5s %8.8s %5.5s %4.4s %s",
1.13 claudio 217: WID_DST(af), WID_DST(af), "Destination",
218: WID_GW(af), WID_GW(af), "Gateway",
219: "Flags", "Refs", "Use", "Mtu", "Prio", "Iface");
1.33 bluhm 220: if (vflag && !Aflag)
1.32 bluhm 221: printf(" %s", "Label");
222: putchar('\n');
1.13 claudio 223: break;
224: }
1.1 claudio 225: }
226:
227: static void
228: get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info)
229: {
230: int i;
231:
232: for (i = 0; i < RTAX_MAX; i++) {
233: if (addrs & (1 << i)) {
234: rti_info[i] = sa;
235: sa = (struct sockaddr *)((char *)(sa) +
236: ROUNDUP(sa->sa_len));
237: } else
238: rti_info[i] = NULL;
239: }
240: }
241:
242: /*
243: * Print a routing table entry.
244: */
245: void
246: p_rtentry(struct rt_msghdr *rtm)
247: {
248: static int old_af = -1;
1.22 chris 249: struct sockaddr *sa = (struct sockaddr *)((char *)rtm + rtm->rtm_hdrlen);
1.1 claudio 250: struct sockaddr *mask, *rti_info[RTAX_MAX];
251: char ifbuf[IF_NAMESIZE];
252:
253: if (sa->sa_family == AF_KEY)
254: return;
255:
1.5 pyr 256: get_rtaddrs(rtm->rtm_addrs, sa, rti_info);
1.41 claudio 257:
1.5 pyr 258: if (Fflag && rti_info[RTAX_GATEWAY]->sa_family != sa->sa_family) {
259: return;
260: }
1.1 claudio 261: if (old_af != sa->sa_family) {
262: old_af = sa->sa_family;
263: pr_family(sa->sa_family);
264: pr_rthdr(sa->sa_family, 0);
265: }
266:
267: mask = rti_info[RTAX_NETMASK];
268: if ((sa = rti_info[RTAX_DST]) == NULL)
269: return;
270:
271: p_sockaddr(sa, mask, rtm->rtm_flags, WID_DST(sa->sa_family));
1.19 michele 272: p_sockaddr_mpls(sa, rti_info[RTAX_SRC], rtm->rtm_mpls,
1.17 michele 273: WID_DST(sa->sa_family));
274:
1.1 claudio 275: p_sockaddr(rti_info[RTAX_GATEWAY], NULL, RTF_HOST,
276: WID_GW(sa->sa_family));
1.30 claudio 277:
1.1 claudio 278: p_flags(rtm->rtm_flags, "%-6.6s ");
1.13 claudio 279: printf("%5u %8llu ", rtm->rtm_rmx.rmx_refcnt,
1.1 claudio 280: rtm->rtm_rmx.rmx_pksent);
281: if (rtm->rtm_rmx.rmx_mtu)
1.13 claudio 282: printf("%5u ", rtm->rtm_rmx.rmx_mtu);
1.1 claudio 283: else
1.13 claudio 284: printf("%5s ", "-");
1.1 claudio 285: putchar((rtm->rtm_rmx.rmx_locks & RTV_MTU) ? 'L' : ' ');
1.32 bluhm 286: printf(" %2d %-5.16s", rtm->rtm_priority,
1.13 claudio 287: if_indextoname(rtm->rtm_index, ifbuf));
1.32 bluhm 288: if (vflag && rti_info[RTAX_LABEL])
289: printf(" %s", ((struct sockaddr_rtlabel *)
290: rti_info[RTAX_LABEL])->sr_label);
1.1 claudio 291: putchar('\n');
292: }
293:
294: /*
295: * Print address family header before a section of the routing table.
296: */
297: void
298: pr_family(int af)
299: {
300: char *afname;
301:
302: switch (af) {
303: case AF_INET:
304: afname = "Internet";
305: break;
306: case AF_INET6:
307: afname = "Internet6";
308: break;
309: case PF_KEY:
310: afname = "Encap";
311: break;
1.13 claudio 312: case AF_MPLS:
313: afname = "MPLS";
314: break;
1.1 claudio 315: default:
316: afname = NULL;
317: break;
318: }
319: if (afname)
320: printf("\n%s:\n", afname);
321: else
322: printf("\nProtocol Family %d:\n", af);
323: }
324:
325: void
326: p_addr(struct sockaddr *sa, struct sockaddr *mask, int flags)
327: {
328: p_sockaddr(sa, mask, flags, WID_DST(sa->sa_family));
329: }
330:
331: void
332: p_gwaddr(struct sockaddr *sa, int af)
333: {
334: p_sockaddr(sa, 0, RTF_HOST, WID_GW(af));
335: }
336:
337: void
338: p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width)
339: {
340: char *cp;
341:
342: switch (sa->sa_family) {
343: case AF_INET6:
344: {
345: struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa;
346: struct in6_addr *in6 = &sa6->sin6_addr;
347:
348: /*
349: * XXX: This is a special workaround for KAME kernels.
350: * sin6_scope_id field of SA should be set in the future.
351: */
352: if (IN6_IS_ADDR_LINKLOCAL(in6) ||
1.3 itojun 353: IN6_IS_ADDR_MC_LINKLOCAL(in6) ||
354: IN6_IS_ADDR_MC_INTFACELOCAL(in6)) {
1.1 claudio 355: /* XXX: override is ok? */
356: sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)
357: &in6->s6_addr[2]);
358: *(u_short *)&in6->s6_addr[2] = 0;
359: }
360: if (flags & RTF_HOST)
361: cp = routename((struct sockaddr *)sa6);
362: else
363: cp = netname((struct sockaddr *)sa6, mask);
364: break;
365: }
1.16 michele 366: case AF_MPLS:
1.17 michele 367: return;
1.1 claudio 368: default:
369: if ((flags & RTF_HOST) || mask == NULL)
370: cp = routename(sa);
371: else
372: cp = netname(sa, mask);
373: break;
374: }
375: if (width < 0)
376: printf("%s", cp);
377: else {
378: if (nflag)
379: printf("%-*s ", width, cp);
380: else
381: printf("%-*.*s ", width, width, cp);
382: }
383: }
384:
1.44 deraadt 385: static char line[HOST_NAME_MAX+1];
386: static char domain[HOST_NAME_MAX+1];
1.17 michele 387:
388: void
389: p_sockaddr_mpls(struct sockaddr *in, struct sockaddr *out, int flags, int width)
390: {
391: if (in->sa_family != AF_MPLS)
392: return;
393:
1.30 claudio 394: if (flags & MPLS_OP_POP || flags == MPLS_OP_LOCAL) {
395: printf("%-*s ", width, label_print(in));
396: printf("%-*s ", width, label_print(NULL));
397: } else {
398: printf("%-*s ", width, label_print(in));
399: printf("%-*s ", width, label_print(out));
400: }
1.17 michele 401:
1.30 claudio 402: printf("%-6s ", mpls_op(flags));
1.17 michele 403: }
404:
1.1 claudio 405: void
406: p_flags(int f, char *format)
407: {
408: char name[33], *flags;
409: const struct bits *p = bits;
410:
411: for (flags = name; p->b_mask && flags < &name[sizeof(name) - 2]; p++)
412: if (p->b_mask & f)
413: *flags++ = p->b_val;
414: *flags = '\0';
415: printf(format, name);
416: }
417:
418: char *
419: routename(struct sockaddr *sa)
420: {
421: char *cp = NULL;
422: static int first = 1;
423:
424: if (first) {
425: first = 0;
426: if (gethostname(domain, sizeof(domain)) == 0 &&
427: (cp = strchr(domain, '.')))
428: (void)strlcpy(domain, cp + 1, sizeof(domain));
429: else
430: domain[0] = '\0';
431: cp = NULL;
432: }
433:
434: if (sa->sa_len == 0) {
435: (void)strlcpy(line, "default", sizeof(line));
436: return (line);
437: }
438:
439: switch (sa->sa_family) {
440: case AF_INET:
441: return
442: (routename4(((struct sockaddr_in *)sa)->sin_addr.s_addr));
443:
444: case AF_INET6:
445: {
446: struct sockaddr_in6 sin6;
447:
448: memset(&sin6, 0, sizeof(sin6));
449: memcpy(&sin6, sa, sa->sa_len);
450: sin6.sin6_len = sizeof(struct sockaddr_in6);
451: sin6.sin6_family = AF_INET6;
452: if (sa->sa_len == sizeof(struct sockaddr_in6) &&
453: (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
1.3 itojun 454: IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) ||
455: IN6_IS_ADDR_MC_INTFACELOCAL(&sin6.sin6_addr)) &&
1.1 claudio 456: sin6.sin6_scope_id == 0) {
457: sin6.sin6_scope_id =
458: ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
459: sin6.sin6_addr.s6_addr[2] = 0;
460: sin6.sin6_addr.s6_addr[3] = 0;
461: }
462: return (routename6(&sin6));
463: }
464:
465: case AF_LINK:
466: return (link_print(sa));
1.13 claudio 467: case AF_MPLS:
1.30 claudio 468: return (label_print(sa));
1.1 claudio 469: case AF_UNSPEC:
470: if (sa->sa_len == sizeof(struct sockaddr_rtlabel)) {
471: static char name[RTLABEL_LEN];
472: struct sockaddr_rtlabel *sr;
473:
474: sr = (struct sockaddr_rtlabel *)sa;
1.9 claudio 475: (void)strlcpy(name, sr->sr_label, sizeof(name));
1.1 claudio 476: return (name);
477: }
478: /* FALLTHROUGH */
479: default:
480: (void)snprintf(line, sizeof(line), "(%d) %s",
481: sa->sa_family, any_ntoa(sa));
482: break;
483: }
484: return (line);
485: }
486:
487: char *
488: routename4(in_addr_t in)
489: {
490: char *cp = NULL;
491: struct in_addr ina;
492: struct hostent *hp;
493:
494: if (in == INADDR_ANY)
495: cp = "default";
496: if (!cp && !nflag) {
497: if ((hp = gethostbyaddr((char *)&in,
498: sizeof(in), AF_INET)) != NULL) {
499: if ((cp = strchr(hp->h_name, '.')) &&
500: !strcmp(cp + 1, domain))
501: *cp = '\0';
502: cp = hp->h_name;
503: }
504: }
505: ina.s_addr = in;
506: strlcpy(line, cp ? cp : inet_ntoa(ina), sizeof(line));
507:
508: return (line);
509: }
510:
511: char *
512: routename6(struct sockaddr_in6 *sin6)
513: {
514: int niflags = 0;
515:
516: if (nflag)
517: niflags |= NI_NUMERICHOST;
518: else
519: niflags |= NI_NOFQDN;
520:
521: if (getnameinfo((struct sockaddr *)sin6, sin6->sin6_len,
522: line, sizeof(line), NULL, 0, niflags) != 0)
523: strncpy(line, "invalid", sizeof(line));
524:
525: return (line);
526: }
527:
528: /*
529: * Return the name of the network whose address is given.
530: * The address is assumed to be that of a net or subnet, not a host.
531: */
532: char *
533: netname4(in_addr_t in, in_addr_t mask)
534: {
535: int mbits;
536:
537: in = ntohl(in);
538: mask = ntohl(mask);
1.43 schwarze 539: mbits = mask ? 33 - ffs(mask) : 0;
1.28 dlg 540: if (in == INADDR_ANY && mask == INADDR_ANY)
1.43 schwarze 541: strlcpy(line, "default", sizeof(line));
1.1 claudio 542: #define C(x) ((x) & 0xff)
543: else if (mbits < 9)
544: snprintf(line, sizeof(line), "%u/%d", C(in >> 24), mbits);
545: else if (mbits < 17)
546: snprintf(line, sizeof(line), "%u.%u/%d",
547: C(in >> 24) , C(in >> 16), mbits);
548: else if (mbits < 25)
549: snprintf(line, sizeof(line), "%u.%u.%u/%d",
550: C(in >> 24), C(in >> 16), C(in >> 8), mbits);
551: else
552: snprintf(line, sizeof(line), "%u.%u.%u.%u/%d", C(in >> 24),
553: C(in >> 16), C(in >> 8), C(in), mbits);
554: #undef C
555: return (line);
556: }
557:
558: char *
559: netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask)
560: {
561: struct sockaddr_in6 sin6;
562: u_char *p;
563: int masklen, final = 0, illegal = 0;
564: int i, lim, flag, error;
565: char hbuf[NI_MAXHOST];
566:
567: sin6 = *sa6;
568:
569: flag = 0;
570: masklen = 0;
571: if (mask) {
572: lim = mask->sin6_len - offsetof(struct sockaddr_in6, sin6_addr);
1.4 claudio 573: lim = lim < (int)sizeof(struct in6_addr) ?
1.41 claudio 574: lim : (int)sizeof(struct in6_addr);
1.1 claudio 575: for (p = (u_char *)&mask->sin6_addr, i = 0; i < lim; p++) {
576: if (final && *p) {
577: illegal++;
578: sin6.sin6_addr.s6_addr[i++] = 0x00;
579: continue;
580: }
581:
582: switch (*p & 0xff) {
583: case 0xff:
584: masklen += 8;
585: break;
586: case 0xfe:
587: masklen += 7;
588: final++;
589: break;
590: case 0xfc:
591: masklen += 6;
592: final++;
593: break;
594: case 0xf8:
595: masklen += 5;
596: final++;
597: break;
598: case 0xf0:
599: masklen += 4;
600: final++;
601: break;
602: case 0xe0:
603: masklen += 3;
604: final++;
605: break;
606: case 0xc0:
607: masklen += 2;
608: final++;
609: break;
610: case 0x80:
611: masklen += 1;
612: final++;
613: break;
614: case 0x00:
615: final++;
616: break;
617: default:
618: final++;
619: illegal++;
620: break;
621: }
622:
623: if (!illegal)
624: sin6.sin6_addr.s6_addr[i++] &= *p;
625: else
626: sin6.sin6_addr.s6_addr[i++] = 0x00;
627: }
1.41 claudio 628: while (i < (int)sizeof(struct in6_addr))
1.1 claudio 629: sin6.sin6_addr.s6_addr[i++] = 0x00;
630: } else
631: masklen = 128;
632:
633: if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr))
634: return ("default");
635:
636: if (illegal)
637: warnx("illegal prefixlen");
638:
639: if (nflag)
640: flag |= NI_NUMERICHOST;
641: error = getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
642: hbuf, sizeof(hbuf), NULL, 0, flag);
643: if (error)
644: snprintf(hbuf, sizeof(hbuf), "invalid");
645:
646: snprintf(line, sizeof(line), "%s/%d", hbuf, masklen);
647: return (line);
648: }
649:
650: /*
651: * Return the name of the network whose address is given.
652: * The address is assumed to be that of a net or subnet, not a host.
653: */
654: char *
655: netname(struct sockaddr *sa, struct sockaddr *mask)
656: {
657: switch (sa->sa_family) {
658: case AF_INET:
659: return netname4(((struct sockaddr_in *)sa)->sin_addr.s_addr,
1.29 claudio 660: mask->sa_len == 0 ? 0 :
1.1 claudio 661: ((struct sockaddr_in *)mask)->sin_addr.s_addr);
662: case AF_INET6:
663: return netname6((struct sockaddr_in6 *)sa,
664: (struct sockaddr_in6 *)mask);
665: case AF_LINK:
666: return (link_print(sa));
1.13 claudio 667: case AF_MPLS:
1.30 claudio 668: return (label_print(sa));
1.1 claudio 669: default:
670: snprintf(line, sizeof(line), "af %d: %s",
671: sa->sa_family, any_ntoa(sa));
672: break;
673: }
674: return (line);
675: }
676:
677: static const char hexlist[] = "0123456789abcdef";
678:
679: char *
680: any_ntoa(const struct sockaddr *sa)
681: {
682: static char obuf[240];
683: const char *in = sa->sa_data;
684: char *out = obuf;
685: int len = sa->sa_len - offsetof(struct sockaddr, sa_data);
686:
687: *out++ = 'Q';
688: do {
689: *out++ = hexlist[(*in >> 4) & 15];
690: *out++ = hexlist[(*in++) & 15];
691: *out++ = '.';
692: } while (--len > 0 && (out + 3) < &obuf[sizeof(obuf) - 1]);
693: out[-1] = '\0';
694: return (obuf);
695: }
696:
697: char *
698: link_print(struct sockaddr *sa)
699: {
700: struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
701: u_char *lla = (u_char *)sdl->sdl_data + sdl->sdl_nlen;
702:
703: if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
704: sdl->sdl_slen == 0) {
705: (void)snprintf(line, sizeof(line), "link#%d", sdl->sdl_index);
706: return (line);
707: }
708: switch (sdl->sdl_type) {
709: case IFT_ETHER:
710: case IFT_CARP:
711: return (ether_ntoa((struct ether_addr *)lla));
712: default:
713: return (link_ntoa(sdl));
714: }
1.13 claudio 715: }
716:
717: char *
1.30 claudio 718: mpls_op(u_int32_t type)
1.13 claudio 719: {
1.16 michele 720: switch (type & (MPLS_OP_PUSH | MPLS_OP_POP | MPLS_OP_SWAP)) {
1.21 michele 721: case MPLS_OP_LOCAL:
722: return ("LOCAL");
1.13 claudio 723: case MPLS_OP_POP:
724: return ("POP");
725: case MPLS_OP_SWAP:
726: return ("SWAP");
727: case MPLS_OP_PUSH:
728: return ("PUSH");
729: default:
730: return ("?");
731: }
732: }
733:
734: char *
1.30 claudio 735: label_print(struct sockaddr *sa)
1.13 claudio 736: {
1.30 claudio 737: struct sockaddr_mpls *smpls = (struct sockaddr_mpls *)sa;
1.13 claudio 738:
1.30 claudio 739: if (smpls)
740: (void)snprintf(line, sizeof(line), "%u",
741: ntohl(smpls->smpls_label) >> MPLS_LABEL_OFFSET);
742: else
743: (void)snprintf(line, sizeof(line), "-");
1.13 claudio 744:
745: return (line);
1.1 claudio 746: }
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