Annotation of src/usr.bin/netstat/show.c, Revision 1.53
1.53 ! guenther 1: /* $OpenBSD: show.c,v 1.52 2016/09/03 14:23:14 phessler 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_DYNAMIC, 'D' },
78: { RTF_MODIFIED, 'M' },
79: { RTF_DONE, 'd' }, /* Completed -- for routing messages only */
80: { RTF_CLONING, 'C' },
1.50 mpi 81: { RTF_MULTICAST,'m' },
1.1 claudio 82: { RTF_LLINFO, 'L' },
83: { RTF_STATIC, 'S' },
1.51 bluhm 84: { RTF_BLACKHOLE,'B' },
85: { RTF_PROTO3, '3' },
86: { RTF_PROTO2, '2' },
1.1 claudio 87: { RTF_PROTO1, '1' },
88: { RTF_CLONED, 'c' },
1.51 bluhm 89: { RTF_CACHED, 'h' },
1.18 claudio 90: { RTF_MPATH, 'P' },
1.25 michele 91: { RTF_MPLS, 'T' },
1.42 mpi 92: { RTF_LOCAL, 'l' },
1.52 phessler 93: { RTF_BFD, 'F' },
1.51 bluhm 94: { RTF_BROADCAST,'b' },
95: { RTF_CONNECTED,'n' },
1.1 claudio 96: { 0 }
97: };
98:
1.41 claudio 99: int WID_DST(int);
1.1 claudio 100: void p_rtentry(struct rt_msghdr *);
101: void pr_family(int);
102: void p_sockaddr(struct sockaddr *, struct sockaddr *, int, int);
1.17 michele 103: void p_sockaddr_mpls(struct sockaddr *, struct sockaddr *, int, int);
1.1 claudio 104: void p_flags(int, char *);
105: char *routename4(in_addr_t);
106: char *routename6(struct sockaddr_in6 *);
107:
1.46 claudio 108: size_t
109: get_sysctl(const int *mib, u_int mcnt, char **buf)
110: {
111: size_t needed;
112:
113: while (1) {
114: if (sysctl(mib, mcnt, NULL, &needed, NULL, 0) == -1)
115: err(1, "sysctl-estimate");
116: if (needed == 0)
117: break;
118: if ((*buf = realloc(*buf, needed)) == NULL)
119: err(1, NULL);
120: if (sysctl(mib, mcnt, *buf, &needed, NULL, 0) == -1) {
121: if (errno == ENOMEM)
122: continue;
123: err(1, "sysctl");
124: }
125: break;
126: }
127:
128: return needed;
129: }
130:
1.1 claudio 131: /*
132: * Print routing tables.
133: */
134: void
1.35 mikeb 135: p_rttables(int af, u_int tableid)
1.1 claudio 136: {
137: struct rt_msghdr *rtm;
138: char *buf = NULL, *next, *lim = NULL;
139: size_t needed;
1.34 claudio 140: int mib[7], mcnt;
1.1 claudio 141: struct sockaddr *sa;
142:
143: mib[0] = CTL_NET;
144: mib[1] = PF_ROUTE;
145: mib[2] = 0;
146: mib[3] = af;
147: mib[4] = NET_RT_DUMP;
148: mib[5] = 0;
1.35 mikeb 149: mib[6] = tableid;
150: mcnt = 7;
1.46 claudio 151:
152: needed = get_sysctl(mib, mcnt, &buf);
153: lim = buf + needed;
1.1 claudio 154:
155: printf("Routing tables\n");
156:
157: if (buf) {
158: for (next = buf; next < lim; next += rtm->rtm_msglen) {
159: rtm = (struct rt_msghdr *)next;
1.8 claudio 160: if (rtm->rtm_version != RTM_VERSION)
161: continue;
1.23 chris 162: sa = (struct sockaddr *)(next + rtm->rtm_hdrlen);
1.1 claudio 163: p_rtentry(rtm);
164: }
165: }
1.47 claudio 166: free(buf);
1.1 claudio 167: }
168:
1.12 deraadt 169: /*
1.1 claudio 170: * column widths; each followed by one space
171: * width of destination/gateway column
172: * strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4
173: */
174: #define WID_GW(af) ((af) == AF_INET6 ? (nflag ? 30 : 18) : 18)
175:
1.41 claudio 176: int
1.13 claudio 177: WID_DST(int af)
178: {
179:
180: if (nflag)
181: switch (af) {
182: case AF_MPLS:
1.30 claudio 183: return 9;
1.13 claudio 184: case AF_INET6:
185: return 34;
186: default:
187: return 18;
188: }
189: else
190: switch (af) {
191: case AF_MPLS:
1.30 claudio 192: return 9;
1.13 claudio 193: default:
194: return 18;
195: }
196: }
197:
1.1 claudio 198: /*
199: * Print header for routing table columns.
200: */
201: void
202: pr_rthdr(int af, int Aflag)
203: {
204: if (Aflag)
205: printf("%-*.*s ", PLEN, PLEN, "Address");
1.13 claudio 206: switch (af) {
207: case PF_KEY:
1.1 claudio 208: printf("%-18s %-5s %-18s %-5s %-5s %-22s\n",
209: "Source", "Port", "Destination",
210: "Port", "Proto", "SA(Address/Proto/Type/Direction)");
1.13 claudio 211: break;
212: case PF_MPLS:
1.30 claudio 213: printf("%-9s %-9s %-6s %-18s %-6.6s %5.5s %8.8s %5.5s %4.4s %s\n",
1.13 claudio 214: "In label", "Out label", "Op", "Gateway",
215: "Flags", "Refs", "Use", "Mtu", "Prio", "Interface");
216: break;
217: default:
1.32 bluhm 218: printf("%-*.*s %-*.*s %-6.6s %5.5s %8.8s %5.5s %4.4s %s",
1.13 claudio 219: WID_DST(af), WID_DST(af), "Destination",
220: WID_GW(af), WID_GW(af), "Gateway",
221: "Flags", "Refs", "Use", "Mtu", "Prio", "Iface");
1.33 bluhm 222: if (vflag && !Aflag)
1.32 bluhm 223: printf(" %s", "Label");
224: putchar('\n');
1.13 claudio 225: break;
226: }
1.1 claudio 227: }
228:
229: static void
230: get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info)
231: {
232: int i;
233:
234: for (i = 0; i < RTAX_MAX; i++) {
235: if (addrs & (1 << i)) {
236: rti_info[i] = sa;
237: sa = (struct sockaddr *)((char *)(sa) +
238: ROUNDUP(sa->sa_len));
239: } else
240: rti_info[i] = NULL;
241: }
242: }
243:
244: /*
245: * Print a routing table entry.
246: */
247: void
248: p_rtentry(struct rt_msghdr *rtm)
249: {
250: static int old_af = -1;
1.22 chris 251: struct sockaddr *sa = (struct sockaddr *)((char *)rtm + rtm->rtm_hdrlen);
1.1 claudio 252: struct sockaddr *mask, *rti_info[RTAX_MAX];
253: char ifbuf[IF_NAMESIZE];
254:
255: if (sa->sa_family == AF_KEY)
256: return;
257:
1.5 pyr 258: get_rtaddrs(rtm->rtm_addrs, sa, rti_info);
1.41 claudio 259:
1.5 pyr 260: if (Fflag && rti_info[RTAX_GATEWAY]->sa_family != sa->sa_family) {
261: return;
262: }
1.1 claudio 263: if (old_af != sa->sa_family) {
264: old_af = sa->sa_family;
265: pr_family(sa->sa_family);
266: pr_rthdr(sa->sa_family, 0);
267: }
268:
269: mask = rti_info[RTAX_NETMASK];
270: if ((sa = rti_info[RTAX_DST]) == NULL)
271: return;
272:
273: p_sockaddr(sa, mask, rtm->rtm_flags, WID_DST(sa->sa_family));
1.19 michele 274: p_sockaddr_mpls(sa, rti_info[RTAX_SRC], rtm->rtm_mpls,
1.17 michele 275: WID_DST(sa->sa_family));
276:
1.1 claudio 277: p_sockaddr(rti_info[RTAX_GATEWAY], NULL, RTF_HOST,
278: WID_GW(sa->sa_family));
1.30 claudio 279:
1.1 claudio 280: p_flags(rtm->rtm_flags, "%-6.6s ");
1.13 claudio 281: printf("%5u %8llu ", rtm->rtm_rmx.rmx_refcnt,
1.1 claudio 282: rtm->rtm_rmx.rmx_pksent);
283: if (rtm->rtm_rmx.rmx_mtu)
1.13 claudio 284: printf("%5u ", rtm->rtm_rmx.rmx_mtu);
1.1 claudio 285: else
1.13 claudio 286: printf("%5s ", "-");
1.1 claudio 287: putchar((rtm->rtm_rmx.rmx_locks & RTV_MTU) ? 'L' : ' ');
1.32 bluhm 288: printf(" %2d %-5.16s", rtm->rtm_priority,
1.13 claudio 289: if_indextoname(rtm->rtm_index, ifbuf));
1.32 bluhm 290: if (vflag && rti_info[RTAX_LABEL])
291: printf(" %s", ((struct sockaddr_rtlabel *)
292: rti_info[RTAX_LABEL])->sr_label);
1.1 claudio 293: putchar('\n');
294: }
295:
296: /*
297: * Print address family header before a section of the routing table.
298: */
299: void
300: pr_family(int af)
301: {
302: char *afname;
303:
304: switch (af) {
305: case AF_INET:
306: afname = "Internet";
307: break;
308: case AF_INET6:
309: afname = "Internet6";
310: break;
311: case PF_KEY:
312: afname = "Encap";
313: break;
1.13 claudio 314: case AF_MPLS:
315: afname = "MPLS";
316: break;
1.1 claudio 317: default:
318: afname = NULL;
319: break;
320: }
321: if (afname)
322: printf("\n%s:\n", afname);
323: else
324: printf("\nProtocol Family %d:\n", af);
325: }
326:
327: void
328: p_addr(struct sockaddr *sa, struct sockaddr *mask, int flags)
329: {
330: p_sockaddr(sa, mask, flags, WID_DST(sa->sa_family));
331: }
332:
333: void
334: p_gwaddr(struct sockaddr *sa, int af)
335: {
336: p_sockaddr(sa, 0, RTF_HOST, WID_GW(af));
337: }
338:
339: void
340: p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width)
341: {
342: char *cp;
343:
344: switch (sa->sa_family) {
345: case AF_INET6:
346: {
347: struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa;
348: struct in6_addr *in6 = &sa6->sin6_addr;
349:
350: /*
351: * XXX: This is a special workaround for KAME kernels.
352: * sin6_scope_id field of SA should be set in the future.
353: */
354: if (IN6_IS_ADDR_LINKLOCAL(in6) ||
1.3 itojun 355: IN6_IS_ADDR_MC_LINKLOCAL(in6) ||
356: IN6_IS_ADDR_MC_INTFACELOCAL(in6)) {
1.1 claudio 357: /* XXX: override is ok? */
358: sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)
359: &in6->s6_addr[2]);
360: *(u_short *)&in6->s6_addr[2] = 0;
361: }
362: if (flags & RTF_HOST)
363: cp = routename((struct sockaddr *)sa6);
364: else
365: cp = netname((struct sockaddr *)sa6, mask);
366: break;
367: }
1.16 michele 368: case AF_MPLS:
1.17 michele 369: return;
1.1 claudio 370: default:
371: if ((flags & RTF_HOST) || mask == NULL)
372: cp = routename(sa);
373: else
374: cp = netname(sa, mask);
375: break;
376: }
377: if (width < 0)
378: printf("%s", cp);
379: else {
380: if (nflag)
381: printf("%-*s ", width, cp);
382: else
383: printf("%-*.*s ", width, width, cp);
384: }
385: }
386:
1.44 deraadt 387: static char line[HOST_NAME_MAX+1];
388: static char domain[HOST_NAME_MAX+1];
1.17 michele 389:
390: void
391: p_sockaddr_mpls(struct sockaddr *in, struct sockaddr *out, int flags, int width)
392: {
393: if (in->sa_family != AF_MPLS)
394: return;
395:
1.30 claudio 396: if (flags & MPLS_OP_POP || flags == MPLS_OP_LOCAL) {
397: printf("%-*s ", width, label_print(in));
398: printf("%-*s ", width, label_print(NULL));
399: } else {
400: printf("%-*s ", width, label_print(in));
401: printf("%-*s ", width, label_print(out));
402: }
1.17 michele 403:
1.30 claudio 404: printf("%-6s ", mpls_op(flags));
1.17 michele 405: }
406:
1.1 claudio 407: void
408: p_flags(int f, char *format)
409: {
410: char name[33], *flags;
411: const struct bits *p = bits;
412:
413: for (flags = name; p->b_mask && flags < &name[sizeof(name) - 2]; p++)
414: if (p->b_mask & f)
415: *flags++ = p->b_val;
416: *flags = '\0';
417: printf(format, name);
418: }
419:
420: char *
421: routename(struct sockaddr *sa)
422: {
423: char *cp = NULL;
424: static int first = 1;
425:
426: if (first) {
427: first = 0;
428: if (gethostname(domain, sizeof(domain)) == 0 &&
429: (cp = strchr(domain, '.')))
430: (void)strlcpy(domain, cp + 1, sizeof(domain));
431: else
432: domain[0] = '\0';
433: cp = NULL;
434: }
435:
436: if (sa->sa_len == 0) {
437: (void)strlcpy(line, "default", sizeof(line));
438: return (line);
439: }
440:
441: switch (sa->sa_family) {
442: case AF_INET:
443: return
444: (routename4(((struct sockaddr_in *)sa)->sin_addr.s_addr));
445:
446: case AF_INET6:
447: {
448: struct sockaddr_in6 sin6;
449:
450: memset(&sin6, 0, sizeof(sin6));
451: memcpy(&sin6, sa, sa->sa_len);
452: sin6.sin6_family = AF_INET6;
453: if (sa->sa_len == sizeof(struct sockaddr_in6) &&
454: (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
1.3 itojun 455: IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) ||
456: IN6_IS_ADDR_MC_INTFACELOCAL(&sin6.sin6_addr)) &&
1.1 claudio 457: sin6.sin6_scope_id == 0) {
458: sin6.sin6_scope_id =
459: ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
460: sin6.sin6_addr.s6_addr[2] = 0;
461: sin6.sin6_addr.s6_addr[3] = 0;
462: }
463: return (routename6(&sin6));
464: }
465:
466: case AF_LINK:
467: return (link_print(sa));
1.13 claudio 468: case AF_MPLS:
1.30 claudio 469: return (label_print(sa));
1.1 claudio 470: case AF_UNSPEC:
471: if (sa->sa_len == sizeof(struct sockaddr_rtlabel)) {
472: static char name[RTLABEL_LEN];
473: struct sockaddr_rtlabel *sr;
474:
475: sr = (struct sockaddr_rtlabel *)sa;
1.9 claudio 476: (void)strlcpy(name, sr->sr_label, sizeof(name));
1.1 claudio 477: return (name);
478: }
479: /* FALLTHROUGH */
480: default:
481: (void)snprintf(line, sizeof(line), "(%d) %s",
482: sa->sa_family, any_ntoa(sa));
483: break;
484: }
485: return (line);
486: }
487:
488: char *
489: routename4(in_addr_t in)
490: {
491: char *cp = NULL;
492: struct in_addr ina;
493: struct hostent *hp;
494:
495: if (in == INADDR_ANY)
496: cp = "default";
497: if (!cp && !nflag) {
498: if ((hp = gethostbyaddr((char *)&in,
499: sizeof(in), AF_INET)) != NULL) {
500: if ((cp = strchr(hp->h_name, '.')) &&
501: !strcmp(cp + 1, domain))
502: *cp = '\0';
503: cp = hp->h_name;
504: }
505: }
506: ina.s_addr = in;
507: strlcpy(line, cp ? cp : inet_ntoa(ina), sizeof(line));
508:
509: return (line);
510: }
511:
512: char *
513: routename6(struct sockaddr_in6 *sin6)
514: {
515: int niflags = 0;
516:
517: if (nflag)
518: niflags |= NI_NUMERICHOST;
519: else
520: niflags |= NI_NOFQDN;
521:
1.53 ! guenther 522: if (getnameinfo((struct sockaddr *)sin6, sizeof(*sin6),
1.1 claudio 523: line, sizeof(line), NULL, 0, niflags) != 0)
524: strncpy(line, "invalid", sizeof(line));
525:
526: return (line);
527: }
528:
529: /*
530: * Return the name of the network whose address is given.
531: * The address is assumed to be that of a net or subnet, not a host.
532: */
533: char *
534: netname4(in_addr_t in, in_addr_t mask)
535: {
536: int mbits;
537:
538: in = ntohl(in);
539: mask = ntohl(mask);
1.43 schwarze 540: mbits = mask ? 33 - ffs(mask) : 0;
1.28 dlg 541: if (in == INADDR_ANY && mask == INADDR_ANY)
1.43 schwarze 542: strlcpy(line, "default", sizeof(line));
1.1 claudio 543: #define C(x) ((x) & 0xff)
544: else if (mbits < 9)
545: snprintf(line, sizeof(line), "%u/%d", C(in >> 24), mbits);
546: else if (mbits < 17)
547: snprintf(line, sizeof(line), "%u.%u/%d",
548: C(in >> 24) , C(in >> 16), mbits);
549: else if (mbits < 25)
550: snprintf(line, sizeof(line), "%u.%u.%u/%d",
551: C(in >> 24), C(in >> 16), C(in >> 8), mbits);
552: else
553: snprintf(line, sizeof(line), "%u.%u.%u.%u/%d", C(in >> 24),
554: C(in >> 16), C(in >> 8), C(in), mbits);
555: #undef C
556: return (line);
557: }
558:
559: char *
560: netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask)
561: {
562: struct sockaddr_in6 sin6;
563: u_char *p;
564: int masklen, final = 0, illegal = 0;
565: int i, lim, flag, error;
566: char hbuf[NI_MAXHOST];
567:
568: sin6 = *sa6;
569:
570: flag = 0;
571: masklen = 0;
572: if (mask) {
573: lim = mask->sin6_len - offsetof(struct sockaddr_in6, sin6_addr);
1.4 claudio 574: lim = lim < (int)sizeof(struct in6_addr) ?
1.41 claudio 575: lim : (int)sizeof(struct in6_addr);
1.1 claudio 576: for (p = (u_char *)&mask->sin6_addr, i = 0; i < lim; p++) {
577: if (final && *p) {
578: illegal++;
579: sin6.sin6_addr.s6_addr[i++] = 0x00;
580: continue;
581: }
582:
583: switch (*p & 0xff) {
584: case 0xff:
585: masklen += 8;
586: break;
587: case 0xfe:
588: masklen += 7;
589: final++;
590: break;
591: case 0xfc:
592: masklen += 6;
593: final++;
594: break;
595: case 0xf8:
596: masklen += 5;
597: final++;
598: break;
599: case 0xf0:
600: masklen += 4;
601: final++;
602: break;
603: case 0xe0:
604: masklen += 3;
605: final++;
606: break;
607: case 0xc0:
608: masklen += 2;
609: final++;
610: break;
611: case 0x80:
612: masklen += 1;
613: final++;
614: break;
615: case 0x00:
616: final++;
617: break;
618: default:
619: final++;
620: illegal++;
621: break;
622: }
623:
624: if (!illegal)
625: sin6.sin6_addr.s6_addr[i++] &= *p;
626: else
627: sin6.sin6_addr.s6_addr[i++] = 0x00;
628: }
1.41 claudio 629: while (i < (int)sizeof(struct in6_addr))
1.1 claudio 630: sin6.sin6_addr.s6_addr[i++] = 0x00;
631: } else
632: masklen = 128;
633:
634: if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr))
635: return ("default");
636:
637: if (illegal)
638: warnx("illegal prefixlen");
639:
640: if (nflag)
641: flag |= NI_NUMERICHOST;
1.53 ! guenther 642: error = getnameinfo((struct sockaddr *)&sin6, sizeof(sin6),
1.1 claudio 643: hbuf, sizeof(hbuf), NULL, 0, flag);
644: if (error)
645: snprintf(hbuf, sizeof(hbuf), "invalid");
646:
647: snprintf(line, sizeof(line), "%s/%d", hbuf, masklen);
648: return (line);
649: }
650:
651: /*
652: * Return the name of the network whose address is given.
653: * The address is assumed to be that of a net or subnet, not a host.
654: */
655: char *
656: netname(struct sockaddr *sa, struct sockaddr *mask)
657: {
658: switch (sa->sa_family) {
659: case AF_INET:
660: return netname4(((struct sockaddr_in *)sa)->sin_addr.s_addr,
1.29 claudio 661: mask->sa_len == 0 ? 0 :
1.1 claudio 662: ((struct sockaddr_in *)mask)->sin_addr.s_addr);
663: case AF_INET6:
664: return netname6((struct sockaddr_in6 *)sa,
665: (struct sockaddr_in6 *)mask);
666: case AF_LINK:
667: return (link_print(sa));
1.13 claudio 668: case AF_MPLS:
1.30 claudio 669: return (label_print(sa));
1.1 claudio 670: default:
671: snprintf(line, sizeof(line), "af %d: %s",
672: sa->sa_family, any_ntoa(sa));
673: break;
674: }
675: return (line);
676: }
677:
678: static const char hexlist[] = "0123456789abcdef";
679:
680: char *
681: any_ntoa(const struct sockaddr *sa)
682: {
683: static char obuf[240];
684: const char *in = sa->sa_data;
685: char *out = obuf;
686: int len = sa->sa_len - offsetof(struct sockaddr, sa_data);
687:
688: *out++ = 'Q';
689: do {
690: *out++ = hexlist[(*in >> 4) & 15];
691: *out++ = hexlist[(*in++) & 15];
692: *out++ = '.';
693: } while (--len > 0 && (out + 3) < &obuf[sizeof(obuf) - 1]);
694: out[-1] = '\0';
695: return (obuf);
696: }
697:
698: char *
699: link_print(struct sockaddr *sa)
700: {
701: struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
702: u_char *lla = (u_char *)sdl->sdl_data + sdl->sdl_nlen;
703:
704: if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
705: sdl->sdl_slen == 0) {
706: (void)snprintf(line, sizeof(line), "link#%d", sdl->sdl_index);
707: return (line);
708: }
709: switch (sdl->sdl_type) {
710: case IFT_ETHER:
711: case IFT_CARP:
712: return (ether_ntoa((struct ether_addr *)lla));
713: default:
714: return (link_ntoa(sdl));
715: }
1.13 claudio 716: }
717:
718: char *
1.30 claudio 719: mpls_op(u_int32_t type)
1.13 claudio 720: {
1.16 michele 721: switch (type & (MPLS_OP_PUSH | MPLS_OP_POP | MPLS_OP_SWAP)) {
1.21 michele 722: case MPLS_OP_LOCAL:
723: return ("LOCAL");
1.13 claudio 724: case MPLS_OP_POP:
725: return ("POP");
726: case MPLS_OP_SWAP:
727: return ("SWAP");
728: case MPLS_OP_PUSH:
729: return ("PUSH");
730: default:
731: return ("?");
732: }
733: }
734:
735: char *
1.30 claudio 736: label_print(struct sockaddr *sa)
1.13 claudio 737: {
1.30 claudio 738: struct sockaddr_mpls *smpls = (struct sockaddr_mpls *)sa;
1.13 claudio 739:
1.30 claudio 740: if (smpls)
741: (void)snprintf(line, sizeof(line), "%u",
742: ntohl(smpls->smpls_label) >> MPLS_LABEL_OFFSET);
743: else
744: (void)snprintf(line, sizeof(line), "-");
1.13 claudio 745:
746: return (line);
1.1 claudio 747: }
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