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Fix WARNS6 regression.
[dragonfly.git] / sbin / ifconfig / af_inet6.c
blobf550f3bc33fb621600d5a8a83bb6b7d5eeed7874
1 /*
2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. 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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: src/sbin/ifconfig/af_inet6.c,v 1.3 2005/06/16 19:37:09 ume Exp $
30 * $DragonFly: src/sbin/ifconfig/af_inet6.c,v 1.1 2006/04/02 03:33:59 sephe Exp $
31 */
32
33 #include <sys/param.h>
34 #include <sys/ioctl.h>
35 #include <sys/socket.h>
36 #include <net/if.h>
37 #include <net/route.h> /* for RTX_IFA */
38
39 #include <err.h>
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <string.h>
43 #include <unistd.h>
44 #include <ifaddrs.h>
45
46 #include <arpa/inet.h>
47
48 #include <netinet/in.h>
49 #include <net/if_var.h> /* for struct ifaddr */
50 #include <netinet/in_var.h>
51 #include <arpa/inet.h>
52 #include <netdb.h>
53
54 #include <netinet6/nd6.h> /* Define ND6_INFINITE_LIFETIME */
55
56 #include "ifconfig.h"
57
58 static struct in6_ifreq in6_ridreq;
59 static struct in6_aliasreq in6_addreq =
60 { { 0 },
61 { 0 },
62 { 0 },
63 { 0 },
64 0,
65 { 0, 0, ND6_INFINITE_LIFETIME, ND6_INFINITE_LIFETIME } };
66 static int ip6lifetime;
67
68 static void in6_fillscopeid(struct sockaddr_in6 *sin6);
69 static int prefix(void *, int);
70 static char *sec2str(time_t);
71 static int explicit_prefix = 0;
72
73 static char addr_buf[MAXHOSTNAMELEN *2 + 1]; /*for getnameinfo()*/
74
75 static void
76 setifprefixlen(const char *addr, int dummy __unused, int s,
77 const struct afswtch *afp)
78 {
79 if (afp->af_getprefix != NULL)
80 afp->af_getprefix(addr, MASK);
81 explicit_prefix = 1;
82 }
83
84 static void
85 setip6flags(const char *dummyaddr __unused, int flag, int dummysoc __unused,
86 const struct afswtch *afp)
87 {
88 if (afp->af_af != AF_INET6)
89 err(1, "address flags can be set only for inet6 addresses");
90
91 if (flag < 0)
92 in6_addreq.ifra_flags &= ~(-flag);
93 else
94 in6_addreq.ifra_flags |= flag;
95 }
96
97 static void
98 setip6lifetime(const char *cmd, const char *val, int s,
99 const struct afswtch *afp)
100 {
101 time_t newval, t;
102 char *ep;
103
104 t = time(NULL);
105 newval = (time_t)strtoul(val, &ep, 0);
106 if (val == ep)
107 errx(1, "invalid %s", cmd);
108 if (afp->af_af != AF_INET6)
109 errx(1, "%s not allowed for the AF", cmd);
110 if (strcmp(cmd, "vltime") == 0) {
111 in6_addreq.ifra_lifetime.ia6t_expire = t + newval;
112 in6_addreq.ifra_lifetime.ia6t_vltime = newval;
113 } else if (strcmp(cmd, "pltime") == 0) {
114 in6_addreq.ifra_lifetime.ia6t_preferred = t + newval;
115 in6_addreq.ifra_lifetime.ia6t_pltime = newval;
116 }
117 }
118
119 static void
120 setip6pltime(const char *seconds, int dummy __unused, int s,
121 const struct afswtch *afp)
122 {
123 setip6lifetime("pltime", seconds, s, afp);
124 }
125
126 static void
127 setip6vltime(const char *seconds, int dummy __unused, int s,
128 const struct afswtch *afp)
129 {
130 setip6lifetime("vltime", seconds, s, afp);
131 }
132
133 static void
134 setip6eui64(const char *cmd, int dummy __unused, int s,
135 const struct afswtch *afp)
136 {
137 struct ifaddrs *ifap, *ifa;
138 const struct sockaddr_in6 *sin6 = NULL;
139 const struct in6_addr *lladdr = NULL;
140 struct in6_addr *in6;
141
142 if (afp->af_af != AF_INET6)
143 errx(EXIT_FAILURE, "%s not allowed for the AF", cmd);
144 in6 = (struct in6_addr *)&in6_addreq.ifra_addr.sin6_addr;
145 if (memcmp(&in6addr_any.s6_addr[8], &in6->s6_addr[8], 8) != 0)
146 errx(EXIT_FAILURE, "interface index is already filled");
147 if (getifaddrs(&ifap) != 0)
148 err(EXIT_FAILURE, "getifaddrs");
149 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
150 if (ifa->ifa_addr->sa_family == AF_INET6 &&
151 strcmp(ifa->ifa_name, name) == 0) {
152 sin6 = (const struct sockaddr_in6 *)ifa->ifa_addr;
153 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
154 lladdr = &sin6->sin6_addr;
155 break;
156 }
157 }
158 }
159 if (!lladdr)
160 errx(EXIT_FAILURE, "could not determine link local address");
161
162 memcpy(&in6->s6_addr[8], &lladdr->s6_addr[8], 8);
163
164 freeifaddrs(ifap);
165 }
166
167 static void
168 in6_fillscopeid(struct sockaddr_in6 *sin6)
169 {
170 #if defined(__KAME__) && defined(KAME_SCOPEID)
171 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
172 sin6->sin6_scope_id =
173 ntohs(*(u_int16_t *)&sin6->sin6_addr.s6_addr[2]);
174 sin6->sin6_addr.s6_addr[2] = sin6->sin6_addr.s6_addr[3] = 0;
175 }
176 #endif
177 }
178
179 static void
180 in6_status(int s __unused, const struct rt_addrinfo * info)
181 {
182 struct sockaddr_in6 *sin, null_sin;
183 struct in6_ifreq ifr6;
184 int s6;
185 u_int32_t flags6;
186 struct in6_addrlifetime lifetime;
187 time_t t = time(NULL);
188 int error;
189 u_int32_t scopeid;
190
191 memset(&null_sin, 0, sizeof(null_sin));
192
193 sin = (struct sockaddr_in6 *)info->rti_info[RTAX_IFA];
194 if (sin == NULL)
195 return;
196
197 strncpy(ifr6.ifr_name, ifr.ifr_name, sizeof(ifr.ifr_name));
198 if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
199 warn("socket(AF_INET6,SOCK_DGRAM)");
200 return;
201 }
202 ifr6.ifr_addr = *sin;
203 if (ioctl(s6, SIOCGIFAFLAG_IN6, &ifr6) < 0) {
204 warn("ioctl(SIOCGIFAFLAG_IN6)");
205 close(s6);
206 return;
207 }
208 flags6 = ifr6.ifr_ifru.ifru_flags6;
209 memset(&lifetime, 0, sizeof(lifetime));
210 ifr6.ifr_addr = *sin;
211 if (ioctl(s6, SIOCGIFALIFETIME_IN6, &ifr6) < 0) {
212 warn("ioctl(SIOCGIFALIFETIME_IN6)");
213 close(s6);
214 return;
215 }
216 lifetime = ifr6.ifr_ifru.ifru_lifetime;
217 close(s6);
218
219 /* XXX: embedded link local addr check */
220 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
221 *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
222 u_short index;
223
224 index = *(u_short *)&sin->sin6_addr.s6_addr[2];
225 *(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
226 if (sin->sin6_scope_id == 0)
227 sin->sin6_scope_id = ntohs(index);
228 }
229 scopeid = sin->sin6_scope_id;
230
231 error = getnameinfo((struct sockaddr *)sin, sin->sin6_len, addr_buf,
232 sizeof(addr_buf), NULL, 0, NI_NUMERICHOST);
233 if (error != 0)
234 inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
235 sizeof(addr_buf));
236 printf("\tinet6 %s ", addr_buf);
237
238 if (flags & IFF_POINTOPOINT) {
239 /* note RTAX_BRD overlap with IFF_BROADCAST */
240 sin = (struct sockaddr_in6 *)info->rti_info[RTAX_BRD];
241 /*
242 * some of the interfaces do not have valid destination
243 * address.
244 */
245 if (sin && sin->sin6_family == AF_INET6) {
246 int error;
247
248 /* XXX: embedded link local addr check */
249 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
250 *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
251 u_short index;
252
253 index = *(u_short *)&sin->sin6_addr.s6_addr[2];
254 *(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
255 if (sin->sin6_scope_id == 0)
256 sin->sin6_scope_id = ntohs(index);
257 }
258
259 error = getnameinfo((struct sockaddr *)sin,
260 sin->sin6_len, addr_buf,
261 sizeof(addr_buf), NULL, 0,
262 NI_NUMERICHOST);
263 if (error != 0)
264 inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
265 sizeof(addr_buf));
266 printf("--> %s ", addr_buf);
267 }
268 }
269
270 sin = (struct sockaddr_in6 *)info->rti_info[RTAX_NETMASK];
271 if (!sin)
272 sin = &null_sin;
273 printf("prefixlen %d ", prefix(&sin->sin6_addr,
274 sizeof(struct in6_addr)));
275
276 if ((flags6 & IN6_IFF_ANYCAST) != 0)
277 printf("anycast ");
278 if ((flags6 & IN6_IFF_TENTATIVE) != 0)
279 printf("tentative ");
280 if ((flags6 & IN6_IFF_DUPLICATED) != 0)
281 printf("duplicated ");
282 if ((flags6 & IN6_IFF_DETACHED) != 0)
283 printf("detached ");
284 if ((flags6 & IN6_IFF_DEPRECATED) != 0)
285 printf("deprecated ");
286 if ((flags6 & IN6_IFF_AUTOCONF) != 0)
287 printf("autoconf ");
288 if ((flags6 & IN6_IFF_TEMPORARY) != 0)
289 printf("temporary ");
290
291 if (scopeid)
292 printf("scopeid 0x%x ", scopeid);
293
294 if (ip6lifetime && (lifetime.ia6t_preferred || lifetime.ia6t_expire)) {
295 printf("pltime ");
296 if (lifetime.ia6t_preferred) {
297 printf("%s ", lifetime.ia6t_preferred < t
298 ? "0" : sec2str(lifetime.ia6t_preferred - t));
299 } else
300 printf("infty ");
301
302 printf("vltime ");
303 if (lifetime.ia6t_expire) {
304 printf("%s ", lifetime.ia6t_expire < t
305 ? "0" : sec2str(lifetime.ia6t_expire - t));
306 } else
307 printf("infty ");
308 }
309
310 putchar('\n');
311 }
312
313 #define SIN6(x) ((struct sockaddr_in6 *) &(x))
314 static struct sockaddr_in6 *sin6tab[] = {
315 SIN6(in6_ridreq.ifr_addr), SIN6(in6_addreq.ifra_addr),
316 SIN6(in6_addreq.ifra_prefixmask), SIN6(in6_addreq.ifra_dstaddr)
317 };
318
319 static void
320 in6_getprefix(const char *plen, int which)
321 {
322 struct sockaddr_in6 *sin = sin6tab[which];
323 u_char *cp;
324 int len = atoi(plen);
325
326 if ((len < 0) || (len > 128))
327 errx(1, "%s: bad value", plen);
328 sin->sin6_len = sizeof(*sin);
329 if (which != MASK)
330 sin->sin6_family = AF_INET6;
331 if ((len == 0) || (len == 128)) {
332 memset(&sin->sin6_addr, 0xff, sizeof(struct in6_addr));
333 return;
334 }
335 memset((void *)&sin->sin6_addr, 0x00, sizeof(sin->sin6_addr));
336 for (cp = (u_char *)&sin->sin6_addr; len > 7; len -= 8)
337 *cp++ = 0xff;
338 *cp = 0xff << (8 - len);
339 }
340
341 static void
342 in6_getaddr(const char *s, int which)
343 {
344 struct sockaddr_in6 *sin = sin6tab[which];
345 struct addrinfo hints, *res;
346 int error = -1;
347
348 newaddr &= 1;
349
350 sin->sin6_len = sizeof(*sin);
351 if (which != MASK)
352 sin->sin6_family = AF_INET6;
353
354 if (which == ADDR) {
355 char *p = NULL;
356 if((p = strrchr(s, '/')) != NULL) {
357 *p = '\0';
358 in6_getprefix(p + 1, MASK);
359 explicit_prefix = 1;
360 }
361 }
362
363 if (sin->sin6_family == AF_INET6) {
364 bzero(&hints, sizeof(struct addrinfo));
365 hints.ai_family = AF_INET6;
366 error = getaddrinfo(s, NULL, &hints, &res);
367 }
368 if (error != 0) {
369 if (inet_pton(AF_INET6, s, &sin->sin6_addr) != 1)
370 errx(1, "%s: bad value", s);
371 } else
372 bcopy(res->ai_addr, sin, res->ai_addrlen);
373 }
374
375 static int
376 prefix(void *val, int size)
377 {
378 u_char *name = (u_char *)val;
379 int byte, bit, plen = 0;
380
381 for (byte = 0; byte < size; byte++, plen += 8)
382 if (name[byte] != 0xff)
383 break;
384 if (byte == size)
385 return (plen);
386 for (bit = 7; bit != 0; bit--, plen++)
387 if (!(name[byte] & (1 << bit)))
388 break;
389 for (; bit != 0; bit--)
390 if (name[byte] & (1 << bit))
391 return(0);
392 byte++;
393 for (; byte < size; byte++)
394 if (name[byte])
395 return(0);
396 return (plen);
397 }
398
399 static char *
400 sec2str(time_t total)
401 {
402 static char result[256];
403 int days, hours, mins, secs;
404 int first = 1;
405 char *p = result;
406
407 if (0) {
408 days = total / 3600 / 24;
409 hours = (total / 3600) % 24;
410 mins = (total / 60) % 60;
411 secs = total % 60;
412
413 if (days) {
414 first = 0;
415 p += sprintf(p, "%dd", days);
416 }
417 if (!first || hours) {
418 first = 0;
419 p += sprintf(p, "%dh", hours);
420 }
421 if (!first || mins) {
422 first = 0;
423 p += sprintf(p, "%dm", mins);
424 }
425 sprintf(p, "%ds", secs);
426 } else
427 sprintf(result, "%lu", (unsigned long)total);
428
429 return(result);
430 }
431
432 static void
433 in6_postproc(int s, const struct afswtch *afp)
434 {
435 if (explicit_prefix == 0) {
436 /* Aggregatable address architecture defines all prefixes
437 are 64. So, it is convenient to set prefixlen to 64 if
438 it is not specified. */
439 setifprefixlen("64", 0, s, afp);
440 /* in6_getprefix("64", MASK) if MASK is available here... */
441 }
442 }
443
444 static void
445 in6_status_tunnel(int s)
446 {
447 char src[NI_MAXHOST];
448 char dst[NI_MAXHOST];
449 struct in6_ifreq in6_ifr;
450 const struct sockaddr *sa = (const struct sockaddr *) &in6_ifr.ifr_addr;
451
452 memset(&in6_ifr, 0, sizeof(in6_ifr));
453 strncpy(in6_ifr.ifr_name, name, IFNAMSIZ);
454
455 if (ioctl(s, SIOCGIFPSRCADDR_IN6, (caddr_t)&in6_ifr) < 0)
456 return;
457 if (sa->sa_family != AF_INET6)
458 return;
459 in6_fillscopeid(&in6_ifr.ifr_addr);
460 if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0,
461 NI_NUMERICHOST) != 0)
462 src[0] = '\0';
463
464 if (ioctl(s, SIOCGIFPDSTADDR_IN6, (caddr_t)&in6_ifr) < 0)
465 return;
466 if (sa->sa_family != AF_INET6)
467 return;
468 in6_fillscopeid(&in6_ifr.ifr_addr);
469 if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0,
470 NI_NUMERICHOST) != 0)
471 dst[0] = '\0';
472
473 printf("\ttunnel inet6 %s --> %s\n", src, dst);
474 }
475
476 static void
477 in6_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
478 {
479 struct in6_aliasreq in6_addreq;
480
481 memset(&in6_addreq, 0, sizeof(in6_addreq));
482 strncpy(in6_addreq.ifra_name, name, IFNAMSIZ);
483 memcpy(&in6_addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
484 memcpy(&in6_addreq.ifra_dstaddr, dstres->ai_addr,
485 dstres->ai_addr->sa_len);
486
487 if (ioctl(s, SIOCSIFPHYADDR_IN6, &in6_addreq) < 0)
488 warn("SIOCSIFPHYADDR_IN6");
489 }
490
491 static struct cmd inet6_cmds[] = {
492 DEF_CMD_ARG("prefixlen", setifprefixlen),
493 DEF_CMD("anycast", IN6_IFF_ANYCAST, setip6flags),
494 DEF_CMD("tentative", IN6_IFF_TENTATIVE, setip6flags),
495 DEF_CMD("-tentative", -IN6_IFF_TENTATIVE, setip6flags),
496 DEF_CMD("deprecated", IN6_IFF_DEPRECATED, setip6flags),
497 DEF_CMD("-deprecated", -IN6_IFF_DEPRECATED, setip6flags),
498 DEF_CMD("autoconf", IN6_IFF_AUTOCONF, setip6flags),
499 DEF_CMD("-autoconf", -IN6_IFF_AUTOCONF, setip6flags),
500 DEF_CMD_ARG("pltime", setip6pltime),
501 DEF_CMD_ARG("vltime", setip6vltime),
502 DEF_CMD("eui64", 0, setip6eui64),
503 };
504
505 static struct afswtch af_inet6 = {
506 .af_name = "inet6",
507 .af_af = AF_INET6,
508 .af_status = in6_status,
509 .af_getaddr = in6_getaddr,
510 .af_getprefix = in6_getprefix,
511 .af_postproc = in6_postproc,
512 .af_status_tunnel = in6_status_tunnel,
513 .af_settunnel = in6_set_tunnel,
514 .af_difaddr = SIOCDIFADDR_IN6,
515 .af_aifaddr = SIOCAIFADDR_IN6,
516 .af_ridreq = &in6_addreq,
517 .af_addreq = &in6_addreq,
518 };
519
520 static void
521 in6_Lopt_cb(const char *optarg __unused)
522 {
523 ip6lifetime++; /* print IPv6 address lifetime */
524 }
525 static struct option in6_Lopt = { "L", "[-L]", in6_Lopt_cb };
526
527 static __constructor void
528 inet6_ctor(void)
529 {
530 #define N(a) (sizeof(a) / sizeof(a[0]))
531 int i;
532
533 for (i = 0; i < N(inet6_cmds); i++)
534 cmd_register(&inet6_cmds[i]);
535 af_register(&af_inet6);
536 opt_register(&in6_Lopt);
537 #undef N
538 }
DragonFly BSD