1 /*-
2 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $OpenBSD: iface.c,v 1.27 2005/07/17 19:13:24 brad Exp $
27 */
28
29 #include <sys/param.h>
30 #include <sys/socket.h>
31 #include <netinet/in.h>
32 #include <net/if.h>
33 #include <net/if_dl.h>
34 #ifdef __FreeBSD__
35 #include <net/if_var.h>
36 #endif
37 #include <net/route.h>
38 #include <netinet/in_systm.h>
39 #include <netinet/in_var.h>
40 #include <netinet/ip.h>
41 #ifndef NOINET6
42 #include <netinet6/nd6.h>
43 #endif
44 #include <sys/un.h>
45
46 #include <errno.h>
47 #include <string.h>
48 #include <stdarg.h>
49 #include <stdio.h>
50 #include <stdlib.h>
51 #include <sys/ioctl.h>
52 #include <sys/sysctl.h>
53 #include <termios.h>
54 #include <unistd.h>
55
56 #include "layer.h"
57 #include "defs.h"
58 #include "command.h"
59 #include "mbuf.h"
60 #include "log.h"
61 #include "id.h"
62 #include "timer.h"
63 #include "fsm.h"
64 #include "iplist.h"
65 #include "lqr.h"
66 #include "hdlc.h"
67 #include "throughput.h"
68 #include "slcompress.h"
69 #include "descriptor.h"
70 #include "ncpaddr.h"
71 #include "ipcp.h"
72 #include "filter.h"
73 #include "lcp.h"
74 #include "ccp.h"
75 #include "link.h"
76 #include "mp.h"
77 #ifndef NORADIUS
78 #include "radius.h"
79 #endif
80 #include "ipv6cp.h"
81 #include "ncp.h"
82 #include "bundle.h"
83 #include "prompt.h"
84 #include "iface.h"
85
86 #define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
87 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
88 static const struct in6_addr in6mask128 = IN6MASK128;
89
90 struct iface *
iface_Create(const char * name)91 iface_Create(const char *name)
92 {
93 int mib[6], maxtries, err;
94 size_t needed, namelen;
95 char *buf, *ptr, *end;
96 struct if_msghdr *ifm;
97 struct ifa_msghdr *ifam;
98 struct sockaddr_dl *dl;
99 struct sockaddr *sa[RTAX_MAX];
100 struct iface *iface;
101 struct iface_addr *addr;
102
103 mib[0] = CTL_NET;
104 mib[1] = PF_ROUTE;
105 mib[2] = 0;
106 mib[3] = 0;
107 mib[4] = NET_RT_IFLIST;
108 mib[5] = 0;
109
110 maxtries = 20;
111 err = 0;
112 do {
113 if (maxtries-- == 0 || (err && err != ENOMEM)) {
114 fprintf(stderr, "iface_Create: sysctl: %s\n", strerror(err));
115 return NULL;
116 }
117
118 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) {
119 fprintf(stderr, "iface_Create: sysctl: estimate: %s\n",
120 strerror(errno));
121 return NULL;
122 }
123
124 if ((buf = (char *)malloc(needed)) == NULL) {
125 fprintf(stderr, "iface_Create: malloc failed: %s\n", strerror(errno));
126 return NULL;
127 }
128
129 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
130 err = errno;
131 free(buf);
132 buf = NULL;
133 }
134 } while (buf == NULL);
135
136 ptr = buf;
137 end = buf + needed;
138 iface = NULL;
139 namelen = strlen(name);
140
141 while (ptr < end && iface == NULL) {
142 ifm = (struct if_msghdr *)ptr; /* On if_msghdr */
143 if (ifm->ifm_type != RTM_IFINFO)
144 break;
145 dl = (struct sockaddr_dl *)(ifm + 1); /* Single _dl at end */
146 if (dl->sdl_nlen == namelen && !strncmp(name, dl->sdl_data, namelen)) {
147 iface = (struct iface *)malloc(sizeof *iface);
148 if (iface == NULL) {
149 fprintf(stderr, "iface_Create: malloc: %s\n", strerror(errno));
150 return NULL;
151 }
152 iface->name = strdup(name);
153 iface->index = ifm->ifm_index;
154 iface->flags = ifm->ifm_flags;
155 iface->mtu = 0;
156 iface->addrs = 0;
157 iface->addr = NULL;
158 }
159 ptr += ifm->ifm_msglen; /* First ifa_msghdr */
160 for (; ptr < end; ptr += ifam->ifam_msglen) {
161 ifam = (struct ifa_msghdr *)ptr; /* Next if address */
162
163 if (ifam->ifam_type != RTM_NEWADDR) /* finished this if */
164 break;
165
166 if (iface != NULL && ifam->ifam_addrs & RTA_IFA) {
167 /* Found a configured interface ! */
168 iface_ParseHdr(ifam, sa);
169
170 if (sa[RTAX_IFA] && (sa[RTAX_IFA]->sa_family == AF_INET
171 #ifndef NOINET6
172 || sa[RTAX_IFA]->sa_family == AF_INET6
173 #endif
174 )) {
175 /* Record the address */
176
177 addr = (struct iface_addr *)
178 realloc(iface->addr, (iface->addrs + 1) * sizeof iface->addr[0]);
179 if (addr == NULL)
180 break;
181 iface->addr = addr;
182
183 addr += iface->addrs;
184 iface->addrs++;
185
186 ncprange_setsa(&addr->ifa, sa[RTAX_IFA], sa[RTAX_NETMASK]);
187 if (sa[RTAX_BRD])
188 ncpaddr_setsa(&addr->peer, sa[RTAX_BRD]);
189 else
190 ncpaddr_init(&addr->peer);
191 }
192 }
193 }
194 }
195
196 free(buf);
197
198 return iface;
199 }
200
201 static int
iface_addr_Zap(const char * name,struct iface_addr * addr,int s)202 iface_addr_Zap(const char *name, struct iface_addr *addr, int s)
203 {
204 struct ifaliasreq ifra;
205 #ifndef NOINET6
206 struct in6_aliasreq ifra6;
207 #endif
208 struct sockaddr_in *me4, *msk4, *peer4;
209 struct sockaddr_storage ssme, sspeer, ssmsk;
210 int res;
211
212 ncprange_getsa(&addr->ifa, &ssme, &ssmsk);
213 ncpaddr_getsa(&addr->peer, &sspeer);
214 res = 0;
215
216 switch (ncprange_family(&addr->ifa)) {
217 case AF_INET:
218 memset(&ifra, '\0', sizeof ifra);
219 strncpy(ifra.ifra_name, name, sizeof ifra.ifra_name - 1);
220
221 me4 = (struct sockaddr_in *)&ifra.ifra_addr;
222 memcpy(me4, &ssme, sizeof *me4);
223
224 msk4 = (struct sockaddr_in *)&ifra.ifra_mask;
225 memcpy(msk4, &ssmsk, sizeof *msk4);
226
227 peer4 = (struct sockaddr_in *)&ifra.ifra_broadaddr;
228 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) {
229 peer4->sin_family = AF_INET;
230 peer4->sin_len = sizeof(*peer4);
231 peer4->sin_addr.s_addr = INADDR_NONE;
232 } else
233 memcpy(peer4, &sspeer, sizeof *peer4);
234
235 res = ID0ioctl(s, SIOCDIFADDR, &ifra);
236 if (log_IsKept(LogDEBUG)) {
237 char buf[100];
238
239 snprintf(buf, sizeof buf, "%s", ncprange_ntoa(&addr->ifa));
240 log_Printf(LogWARN, "%s: DIFADDR %s -> %s returns %d\n",
241 ifra.ifra_name, buf, ncpaddr_ntoa(&addr->peer), res);
242 }
243 break;
244
245 #ifndef NOINET6
246 case AF_INET6:
247 memset(&ifra6, '\0', sizeof ifra6);
248 strncpy(ifra6.ifra_name, name, sizeof ifra6.ifra_name - 1);
249
250 memcpy(&ifra6.ifra_addr, &ssme, sizeof ifra6.ifra_addr);
251 memcpy(&ifra6.ifra_prefixmask, &ssmsk, sizeof ifra6.ifra_prefixmask);
252 ifra6.ifra_prefixmask.sin6_family = AF_UNSPEC;
253 if (ncpaddr_family(&addr->peer) == AF_UNSPEC)
254 ifra6.ifra_dstaddr.sin6_family = AF_UNSPEC;
255 else
256 memcpy(&ifra6.ifra_dstaddr, &sspeer, sizeof ifra6.ifra_dstaddr);
257 ifra6.ifra_lifetime.ia6t_vltime = ND6_INFINITE_LIFETIME;
258 ifra6.ifra_lifetime.ia6t_pltime = ND6_INFINITE_LIFETIME;
259
260 res = ID0ioctl(s, SIOCDIFADDR_IN6, &ifra6);
261 break;
262 #endif
263 }
264
265 if (res == -1) {
266 char dst[40];
267 const char *end =
268 #ifndef NOINET6
269 ncprange_family(&addr->ifa) == AF_INET6 ? "_IN6" :
270 #endif
271 "";
272
273 if (ncpaddr_family(&addr->peer) == AF_UNSPEC)
274 log_Printf(LogWARN, "iface rm: ioctl(SIOCDIFADDR%s, %s): %s\n",
275 end, ncprange_ntoa(&addr->ifa), strerror(errno));
276 else {
277 snprintf(dst, sizeof dst, "%s", ncpaddr_ntoa(&addr->peer));
278 log_Printf(LogWARN, "iface rm: ioctl(SIOCDIFADDR%s, %s -> %s): %s\n",
279 end, ncprange_ntoa(&addr->ifa), dst, strerror(errno));
280 }
281 }
282
283 return res != -1;
284 }
285
286 static int
iface_addr_Add(const char * name,struct iface_addr * addr,int s)287 iface_addr_Add(const char *name, struct iface_addr *addr, int s)
288 {
289 struct ifaliasreq ifra;
290 #ifndef NOINET6
291 struct in6_aliasreq ifra6;
292 #endif
293 struct sockaddr_in *me4, *msk4, *peer4;
294 struct sockaddr_storage ssme, sspeer, ssmsk;
295 int res;
296
297 ncprange_getsa(&addr->ifa, &ssme, &ssmsk);
298 ncpaddr_getsa(&addr->peer, &sspeer);
299 res = 0;
300
301 switch (ncprange_family(&addr->ifa)) {
302 case AF_INET:
303 memset(&ifra, '\0', sizeof ifra);
304 strncpy(ifra.ifra_name, name, sizeof ifra.ifra_name - 1);
305
306 me4 = (struct sockaddr_in *)&ifra.ifra_addr;
307 memcpy(me4, &ssme, sizeof *me4);
308
309 msk4 = (struct sockaddr_in *)&ifra.ifra_mask;
310 memcpy(msk4, &ssmsk, sizeof *msk4);
311
312 peer4 = (struct sockaddr_in *)&ifra.ifra_broadaddr;
313 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) {
314 peer4->sin_family = AF_INET;
315 peer4->sin_len = sizeof(*peer4);
316 peer4->sin_addr.s_addr = INADDR_NONE;
317 } else
318 memcpy(peer4, &sspeer, sizeof *peer4);
319
320 res = ID0ioctl(s, SIOCAIFADDR, &ifra);
321 if (log_IsKept(LogDEBUG)) {
322 char buf[100];
323
324 snprintf(buf, sizeof buf, "%s", ncprange_ntoa(&addr->ifa));
325 log_Printf(LogWARN, "%s: AIFADDR %s -> %s returns %d\n",
326 ifra.ifra_name, buf, ncpaddr_ntoa(&addr->peer), res);
327 }
328 break;
329
330 #ifndef NOINET6
331 case AF_INET6:
332 memset(&ifra6, '\0', sizeof ifra6);
333 strncpy(ifra6.ifra_name, name, sizeof ifra6.ifra_name - 1);
334
335 memcpy(&ifra6.ifra_addr, &ssme, sizeof ifra6.ifra_addr);
336 memcpy(&ifra6.ifra_prefixmask, &ssmsk, sizeof ifra6.ifra_prefixmask);
337 if (ncpaddr_family(&addr->peer) == AF_UNSPEC)
338 ifra6.ifra_dstaddr.sin6_family = AF_UNSPEC;
339 else if (memcmp(&((struct sockaddr_in6 *)&ssmsk)->sin6_addr, &in6mask128,
340 sizeof in6mask128) == 0)
341 memcpy(&ifra6.ifra_dstaddr, &sspeer, sizeof ifra6.ifra_dstaddr);
342 ifra6.ifra_lifetime.ia6t_vltime = ND6_INFINITE_LIFETIME;
343 ifra6.ifra_lifetime.ia6t_pltime = ND6_INFINITE_LIFETIME;
344
345 res = ID0ioctl(s, SIOCAIFADDR_IN6, &ifra6);
346 break;
347 #endif
348 }
349
350 if (res == -1) {
351 char dst[40];
352 const char *end =
353 #ifndef NOINET6
354 ncprange_family(&addr->ifa) == AF_INET6 ? "_IN6" :
355 #endif
356 "";
357
358 if (ncpaddr_family(&addr->peer) == AF_UNSPEC)
359 log_Printf(LogWARN, "iface add: ioctl(SIOCAIFADDR%s, %s): %s\n",
360 end, ncprange_ntoa(&addr->ifa), strerror(errno));
361 else {
362 snprintf(dst, sizeof dst, "%s", ncpaddr_ntoa(&addr->peer));
363 log_Printf(LogWARN, "iface add: ioctl(SIOCAIFADDR%s, %s -> %s): %s\n",
364 end, ncprange_ntoa(&addr->ifa), dst, strerror(errno));
365 }
366 }
367
368 return res != -1;
369 }
370
371
372 void
iface_Clear(struct iface * iface,struct ncp * ncp,int family,int how)373 iface_Clear(struct iface *iface, struct ncp *ncp, int family, int how)
374 {
375 int addrs, af, inskip, in6skip, n, s4 = -1, s6 = -1, *s;
376
377 if (iface->addrs) {
378 inskip = in6skip = how == IFACE_CLEAR_ALL ? 0 : 1;
379 addrs = 0;
380
381 for (n = 0; n < iface->addrs; n++) {
382 af = ncprange_family(&iface->addr[n].ifa);
383 if (family == 0 || family == af) {
384 if (!iface->addr[n].system && (how & IFACE_SYSTEM))
385 continue;
386 switch (af) {
387 case AF_INET:
388 if (inskip) {
389 inskip = 0;
390 continue;
391 }
392 s = &s4;
393 break;
394
395 #ifndef NOINET6
396 case AF_INET6:
397 if (in6skip) {
398 in6skip = 0;
399 continue;
400 }
401 s = &s6;
402 break;
403 #endif
404 default:
405 continue;
406 }
407
408 if (*s == -1 && (*s = ID0socket(af, SOCK_DGRAM, 0)) == -1)
409 log_Printf(LogERROR, "iface_Clear: socket(): %s\n", strerror(errno));
410 else if (iface_addr_Zap(iface->name, iface->addr + n, *s)) {
411 ncp_IfaceAddrDeleted(ncp, iface->addr + n);
412 memmove(iface->addr + n, iface->addr + n + 1,
413 (iface->addrs - n - 1) * sizeof *iface->addr);
414 iface->addrs--;
415 n--;
416 }
417 }
418 }
419
420 /* Don't bother realloc()ing - we have little to gain */
421
422 if (s4)
423 close(s4);
424 if (s6)
425 close(s6);
426 }
427 }
428
429 int
iface_Add(struct iface * iface,struct ncp * ncp,const struct ncprange * ifa,const struct ncpaddr * peer,int how)430 iface_Add(struct iface *iface, struct ncp *ncp, const struct ncprange *ifa,
431 const struct ncpaddr *peer, int how)
432 {
433 int af, n, removed, s;
434 struct ncpaddr ncplocal;
435 struct iface_addr *addr, newaddr;
436
437 af = ncprange_family(ifa);
438 if ((s = ID0socket(af, SOCK_DGRAM, 0)) == -1) {
439 log_Printf(LogERROR, "iface_Add: socket(): %s\n", strerror(errno));
440 return 0;
441 }
442 ncprange_getaddr(ifa, &ncplocal);
443
444 for (n = 0; n < iface->addrs; n++) {
445 if (ncprange_contains(&iface->addr[n].ifa, &ncplocal) ||
446 ncpaddr_equal(&iface->addr[n].peer, peer)) {
447 /* Replace this sockaddr */
448 if (!(how & IFACE_FORCE_ADD)) {
449 close(s);
450 return 0; /* errno = EEXIST; */
451 }
452
453 if (ncprange_equal(&iface->addr[n].ifa, ifa) &&
454 ncpaddr_equal(&iface->addr[n].peer, peer)) {
455 close(s);
456 return 1; /* Already there */
457 }
458
459 removed = iface_addr_Zap(iface->name, iface->addr + n, s);
460 if (removed)
461 ncp_IfaceAddrDeleted(ncp, iface->addr + n);
462 ncprange_copy(&iface->addr[n].ifa, ifa);
463 ncpaddr_copy(&iface->addr[n].peer, peer);
464 if (!iface_addr_Add(iface->name, iface->addr + n, s)) {
465 if (removed) {
466 memmove(iface->addr + n, iface->addr + n + 1,
467 (iface->addrs - n - 1) * sizeof *iface->addr);
468 iface->addrs--;
469 n--;
470 }
471 close(s);
472 return 0;
473 }
474 close(s);
475 ncp_IfaceAddrAdded(ncp, iface->addr + n);
476 return 1;
477 }
478 }
479
480 addr = (struct iface_addr *)realloc
481 (iface->addr, (iface->addrs + 1) * sizeof iface->addr[0]);
482 if (addr == NULL) {
483 log_Printf(LogERROR, "iface_inAdd: realloc: %s\n", strerror(errno));
484 close(s);
485 return 0;
486 }
487 iface->addr = addr;
488
489 ncprange_copy(&newaddr.ifa, ifa);
490 ncpaddr_copy(&newaddr.peer, peer);
491 newaddr.system = !!(how & IFACE_SYSTEM);
492 if (!iface_addr_Add(iface->name, &newaddr, s)) {
493 close(s);
494 return 0;
495 }
496
497 if (how & IFACE_ADD_FIRST) {
498 /* Stuff it at the start of our list */
499 n = 0;
500 memmove(iface->addr + 1, iface->addr, iface->addrs * sizeof *iface->addr);
501 } else
502 n = iface->addrs;
503
504 iface->addrs++;
505 memcpy(iface->addr + n, &newaddr, sizeof(*iface->addr));
506
507 close(s);
508 ncp_IfaceAddrAdded(ncp, iface->addr + n);
509
510 return 1;
511 }
512
513 int
iface_Delete(struct iface * iface,struct ncp * ncp,const struct ncpaddr * del)514 iface_Delete(struct iface *iface, struct ncp *ncp, const struct ncpaddr *del)
515 {
516 struct ncpaddr found;
517 int n, res, s;
518
519 if ((s = ID0socket(ncpaddr_family(del), SOCK_DGRAM, 0)) == -1) {
520 log_Printf(LogERROR, "iface_Delete: socket(): %s\n", strerror(errno));
521 return 0;
522 }
523
524 for (n = res = 0; n < iface->addrs; n++) {
525 ncprange_getaddr(&iface->addr[n].ifa, &found);
526 if (ncpaddr_equal(&found, del)) {
527 if (iface_addr_Zap(iface->name, iface->addr + n, s)) {
528 ncp_IfaceAddrDeleted(ncp, iface->addr + n);
529 memmove(iface->addr + n, iface->addr + n + 1,
530 (iface->addrs - n - 1) * sizeof *iface->addr);
531 iface->addrs--;
532 res = 1;
533 }
534 break;
535 }
536 }
537
538 close(s);
539
540 return res;
541 }
542
543 #define IFACE_ADDFLAGS 1
544 #define IFACE_DELFLAGS 2
545
546 static int
iface_ChangeFlags(const char * ifname,int flags,int how)547 iface_ChangeFlags(const char *ifname, int flags, int how)
548 {
549 struct ifreq ifrq;
550 int s;
551
552 s = ID0socket(PF_INET, SOCK_DGRAM, 0);
553 if (s < 0) {
554 log_Printf(LogERROR, "iface_ChangeFlags: socket: %s\n", strerror(errno));
555 return 0;
556 }
557
558 memset(&ifrq, '\0', sizeof ifrq);
559 strncpy(ifrq.ifr_name, ifname, sizeof ifrq.ifr_name - 1);
560 ifrq.ifr_name[sizeof ifrq.ifr_name - 1] = '\0';
561 if (ID0ioctl(s, SIOCGIFFLAGS, &ifrq) < 0) {
562 log_Printf(LogERROR, "iface_ChangeFlags: ioctl(SIOCGIFFLAGS): %s\n",
563 strerror(errno));
564 close(s);
565 return 0;
566 }
567
568 if (how == IFACE_ADDFLAGS)
569 ifrq.ifr_flags |= flags;
570 else
571 ifrq.ifr_flags &= ~flags;
572
573 if (ID0ioctl(s, SIOCSIFFLAGS, &ifrq) < 0) {
574 log_Printf(LogERROR, "iface_ChangeFlags: ioctl(SIOCSIFFLAGS): %s\n",
575 strerror(errno));
576 close(s);
577 return 0;
578 }
579 close(s);
580
581 return 1; /* Success */
582 }
583
584 int
iface_SetFlags(const char * ifname,int flags)585 iface_SetFlags(const char *ifname, int flags)
586 {
587 return iface_ChangeFlags(ifname, flags, IFACE_ADDFLAGS);
588 }
589
590 int
iface_ClearFlags(const char * ifname,int flags)591 iface_ClearFlags(const char *ifname, int flags)
592 {
593 return iface_ChangeFlags(ifname, flags, IFACE_DELFLAGS);
594 }
595
596 void
iface_Destroy(struct iface * iface)597 iface_Destroy(struct iface *iface)
598 {
599 /*
600 * iface_Clear(iface, IFACE_CLEAR_ALL) must be called manually
601 * if that's what the user wants. It's better to leave the interface
602 * allocated so that existing connections can continue to work.
603 */
604
605 if (iface != NULL) {
606 free(iface->name);
607 free(iface->addr);
608 free(iface);
609 }
610 }
611
612 #define if_entry(x) { IFF_##x, #x }
613
614 struct {
615 int flag;
616 const char *value;
617 } if_flags[] = {
618 if_entry(UP),
619 if_entry(BROADCAST),
620 if_entry(DEBUG),
621 if_entry(LOOPBACK),
622 if_entry(POINTOPOINT),
623 if_entry(RUNNING),
624 if_entry(NOARP),
625 if_entry(PROMISC),
626 if_entry(ALLMULTI),
627 if_entry(OACTIVE),
628 if_entry(SIMPLEX),
629 if_entry(LINK0),
630 if_entry(LINK1),
631 if_entry(LINK2),
632 if_entry(MULTICAST),
633 { 0, "???" }
634 };
635
636 int
iface_Show(struct cmdargs const * arg)637 iface_Show(struct cmdargs const *arg)
638 {
639 struct ncpaddr ncpaddr;
640 struct iface *iface = arg->bundle->iface, *current;
641 int f, flags;
642 #ifndef NOINET6
643 int scopeid, width;
644 #endif
645 struct in_addr mask;
646
647 current = iface_Create(iface->name);
648 flags = iface->flags = current->flags;
649 iface_Destroy(current);
650
651 prompt_Printf(arg->prompt, "%s (idx %d) <", iface->name, iface->index);
652 for (f = 0; f < sizeof if_flags / sizeof if_flags[0]; f++)
653 if ((if_flags[f].flag & flags)) {
654 prompt_Printf(arg->prompt, "%s%s", flags == iface->flags ? "" : ",",
655 if_flags[f].value);
656 flags &= ~if_flags[f].flag;
657 }
658
659 #if 0
660 if (flags)
661 prompt_Printf(arg->prompt, "%s0x%x", flags == iface->flags ? "" : ",",
662 flags);
663 #endif
664
665 prompt_Printf(arg->prompt, "> mtu %d has %d address%s:\n", iface->mtu,
666 iface->addrs, iface->addrs == 1 ? "" : "es");
667
668 for (f = 0; f < iface->addrs; f++) {
669 ncprange_getaddr(&iface->addr[f].ifa, &ncpaddr);
670 switch (ncprange_family(&iface->addr[f].ifa)) {
671 case AF_INET:
672 prompt_Printf(arg->prompt, " inet %s --> ", ncpaddr_ntoa(&ncpaddr));
673 if (ncpaddr_family(&iface->addr[f].peer) == AF_UNSPEC)
674 prompt_Printf(arg->prompt, "255.255.255.255");
675 else
676 prompt_Printf(arg->prompt, "%s", ncpaddr_ntoa(&iface->addr[f].peer));
677 ncprange_getip4mask(&iface->addr[f].ifa, &mask);
678 prompt_Printf(arg->prompt, " netmask 0x%08lx", (long)ntohl(mask.s_addr));
679 break;
680
681 #ifndef NOINET6
682 case AF_INET6:
683 prompt_Printf(arg->prompt, " inet6 %s", ncpaddr_ntoa(&ncpaddr));
684 if (ncpaddr_family(&iface->addr[f].peer) != AF_UNSPEC)
685 prompt_Printf(arg->prompt, " --> %s",
686 ncpaddr_ntoa(&iface->addr[f].peer));
687 ncprange_getwidth(&iface->addr[f].ifa, &width);
688 if (ncpaddr_family(&iface->addr[f].peer) == AF_UNSPEC)
689 prompt_Printf(arg->prompt, " prefixlen %d", width);
690 if ((scopeid = ncprange_scopeid(&iface->addr[f].ifa)) != -1)
691 prompt_Printf(arg->prompt, " scopeid 0x%x", (unsigned)scopeid);
692 break;
693 #endif
694 }
695 prompt_Printf(arg->prompt, "\n");
696 }
697
698 return 0;
699 }
700
701 void
iface_ParseHdr(struct ifa_msghdr * ifam,struct sockaddr * sa[RTAX_MAX])702 iface_ParseHdr(struct ifa_msghdr *ifam, struct sockaddr *sa[RTAX_MAX])
703 {
704 char *wp;
705 int rtax;
706
707 wp = (char *)(ifam + 1);
708
709 for (rtax = 0; rtax < RTAX_MAX; rtax++)
710 if (ifam->ifam_addrs & (1 << rtax)) {
711 sa[rtax] = (struct sockaddr *)wp;
712 wp += ROUNDUP(sa[rtax]->sa_len);
713 } else
714 sa[rtax] = NULL;
715 }
716