rtld - do not allow both dynamic DTV index and static TLS offset
[dragonfly.git] / sbin / ifconfig / af_inet6.c
blob639e921698f7cc4a402dc3e4c3a25abbcd9d50cd
1 /*
2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
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 * 3. 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.
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.
29 * $FreeBSD: src/sbin/ifconfig/af_inet6.c,v 1.3 2005/06/16 19:37:09 ume Exp $
32 #include <sys/param.h>
33 #include <sys/ioctl.h>
34 #include <sys/socket.h>
35 #include <net/if.h>
36 #include <net/if_var.h> /* for struct ifaddr */
37 #include <netinet/in.h>
38 #include <netinet/in_var.h>
39 #include <netinet6/nd6.h> /* Define ND6_INFINITE_LIFETIME */
40 #include <arpa/inet.h>
41 #include <netdb.h>
43 #include <err.h>
44 #include <ifaddrs.h>
45 #include <stdbool.h>
46 #include <stdio.h>
47 #include <stdlib.h>
48 #include <string.h>
49 #include <time.h>
50 #include <unistd.h>
52 #include "ifconfig.h"
54 static struct in6_ifreq in6_ridreq;
55 static struct in6_aliasreq in6_addreq =
56 { { 0 },
57 { 0 },
58 { 0 },
59 { 0 },
61 { 0, 0, ND6_INFINITE_LIFETIME, ND6_INFINITE_LIFETIME } };
62 static int ip6lifetime;
64 static void in6_fillscopeid(struct sockaddr_in6 *sin6);
65 static int prefix(void *, int);
66 static char *sec2str(time_t);
67 static int explicit_prefix = 0;
69 static char addr_buf[NI_MAXHOST]; /* for getnameinfo() */
71 static void
72 setifprefixlen(const char *addr, int dummy __unused, int s __unused,
73 const struct afswtch *afp)
75 if (afp->af_getprefix != NULL)
76 afp->af_getprefix(addr, MASK);
77 explicit_prefix = 1;
80 static void
81 setip6flags(const char *addr __unused, int flag, int s __unused,
82 const struct afswtch *afp)
84 if (afp->af_af != AF_INET6)
85 err(1, "address flags can be set only for inet6 addresses");
87 if (flag < 0)
88 in6_addreq.ifra_flags &= ~(-flag);
89 else
90 in6_addreq.ifra_flags |= flag;
93 static void
94 setip6lifetime(const char *cmd, const char *val, int s __unused,
95 const struct afswtch *afp)
97 struct timespec now;
98 time_t newval;
99 char *ep;
101 clock_gettime(CLOCK_MONOTONIC_FAST, &now);
102 newval = (time_t)strtoul(val, &ep, 0);
103 if (val == ep)
104 errx(1, "invalid %s", cmd);
105 if (afp->af_af != AF_INET6)
106 errx(1, "%s not allowed for the AF", cmd);
107 if (strcmp(cmd, "vltime") == 0) {
108 in6_addreq.ifra_lifetime.ia6t_expire = now.tv_sec + newval;
109 in6_addreq.ifra_lifetime.ia6t_vltime = newval;
110 } else if (strcmp(cmd, "pltime") == 0) {
111 in6_addreq.ifra_lifetime.ia6t_preferred = now.tv_sec + newval;
112 in6_addreq.ifra_lifetime.ia6t_pltime = newval;
116 static void
117 setip6pltime(const char *seconds, int dummy __unused, int s,
118 const struct afswtch *afp)
120 setip6lifetime("pltime", seconds, s, afp);
123 static void
124 setip6vltime(const char *seconds, int dummy __unused, int s,
125 const struct afswtch *afp)
127 setip6lifetime("vltime", seconds, s, afp);
130 static void
131 setip6eui64(const char *cmd, int dummy __unused, int s __unused,
132 const struct afswtch *afp)
134 struct ifaddrs *ifap, *ifa;
135 const struct sockaddr_in6 *sin6 = NULL;
136 const struct in6_addr *lladdr = NULL;
137 struct in6_addr *in6;
139 if (afp->af_af != AF_INET6)
140 errx(EXIT_FAILURE, "%s not allowed for the AF", cmd);
141 in6 = (struct in6_addr *)&in6_addreq.ifra_addr.sin6_addr;
142 if (memcmp(&in6addr_any.s6_addr[8], &in6->s6_addr[8], 8) != 0)
143 errx(EXIT_FAILURE, "interface index is already filled");
144 if (getifaddrs(&ifap) != 0)
145 err(EXIT_FAILURE, "getifaddrs");
146 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
147 if (ifa->ifa_addr->sa_family == AF_INET6 &&
148 strcmp(ifa->ifa_name, IfName) == 0) {
149 sin6 = (const struct sockaddr_in6 *)ifa->ifa_addr;
150 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
151 lladdr = &sin6->sin6_addr;
152 break;
156 if (!lladdr)
157 errx(EXIT_FAILURE, "could not determine link local address");
159 memcpy(&in6->s6_addr[8], &lladdr->s6_addr[8], 8);
161 freeifaddrs(ifap);
164 static void
165 in6_fillscopeid(struct sockaddr_in6 *sin6)
167 #if defined(__KAME__) && defined(KAME_SCOPEID)
168 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
169 sin6->sin6_scope_id =
170 ntohs(*(u_int16_t *)&sin6->sin6_addr.s6_addr[2]);
171 sin6->sin6_addr.s6_addr[2] = sin6->sin6_addr.s6_addr[3] = 0;
173 #else
174 (void)sin6;
175 #endif
178 static void
179 in6_status(int s __unused, const struct ifaddrs *ifa)
181 struct sockaddr_in6 *sin, null_sin;
182 struct in6_ifreq ifr6;
183 int s6;
184 u_int32_t flags6;
185 struct in6_addrlifetime lifetime;
186 struct timespec now;
187 int n_flags, prefixlen;
188 int error;
189 u_int32_t scopeid;
191 clock_gettime(CLOCK_MONOTONIC_FAST, &now);
193 memset(&null_sin, 0, sizeof(null_sin));
195 sin = (struct sockaddr_in6 *)ifa->ifa_addr;
196 if (sin == NULL)
197 return;
199 strlcpy(ifr6.ifr_name, IfName, sizeof(ifr6.ifr_name));
200 if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
201 warn("socket(AF_INET6,SOCK_DGRAM)");
202 return;
204 ifr6.ifr_addr = *sin;
205 if (ioctl(s6, SIOCGIFAFLAG_IN6, &ifr6) < 0) {
206 warn("ioctl(SIOCGIFAFLAG_IN6)");
207 close(s6);
208 return;
210 flags6 = ifr6.ifr_ifru.ifru_flags6;
211 memset(&lifetime, 0, sizeof(lifetime));
212 ifr6.ifr_addr = *sin;
213 if (ioctl(s6, SIOCGIFALIFETIME_IN6, &ifr6) < 0) {
214 warn("ioctl(SIOCGIFALIFETIME_IN6)");
215 close(s6);
216 return;
218 lifetime = ifr6.ifr_ifru.ifru_lifetime;
219 close(s6);
221 /* XXX: embedded link local addr check */
222 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
223 *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
224 u_short index;
226 index = *(u_short *)&sin->sin6_addr.s6_addr[2];
227 *(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
228 if (sin->sin6_scope_id == 0)
229 sin->sin6_scope_id = ntohs(index);
231 scopeid = sin->sin6_scope_id;
233 if (f_addr != NULL && strcmp(f_addr, "fqdn") == 0)
234 n_flags = 0;
235 else if (f_addr != NULL && strcmp(f_addr, "host") == 0)
236 n_flags = NI_NOFQDN;
237 else
238 n_flags = NI_NUMERICHOST;
240 error = getnameinfo((struct sockaddr *)sin, sin->sin6_len, addr_buf,
241 sizeof(addr_buf), NULL, 0, n_flags);
242 if (error != 0)
243 inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
244 sizeof(addr_buf));
245 printf("\tinet6 %s", addr_buf);
247 if (ifa->ifa_flags & IFF_POINTOPOINT) {
248 sin = (struct sockaddr_in6 *)ifa->ifa_dstaddr;
250 * some of the interfaces do not have valid destination
251 * address.
253 if (sin != NULL && sin->sin6_family == AF_INET6) {
254 /* XXX: embedded link local addr check */
255 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
256 *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
257 u_short index;
259 index = *(u_short *)&sin->sin6_addr.s6_addr[2];
260 *(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
261 if (sin->sin6_scope_id == 0)
262 sin->sin6_scope_id = ntohs(index);
265 error = getnameinfo((struct sockaddr *)sin,
266 sin->sin6_len, addr_buf,
267 sizeof(addr_buf), NULL, 0,
268 NI_NUMERICHOST);
269 if (error != 0)
270 inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
271 sizeof(addr_buf));
272 printf(" --> %s", addr_buf);
276 sin = (struct sockaddr_in6 *)ifa->ifa_netmask;
277 if (sin == NULL)
278 sin = &null_sin;
279 prefixlen = prefix(&sin->sin6_addr, sizeof(struct in6_addr));
280 if (f_inet6 != NULL && strcmp(f_inet6, "cidr") == 0)
281 printf("/%d", prefixlen);
282 else
283 printf(" prefixlen %d", prefixlen);
285 if ((flags6 & IN6_IFF_ANYCAST) != 0)
286 printf(" anycast");
287 if ((flags6 & IN6_IFF_TENTATIVE) != 0)
288 printf(" tentative");
289 if ((flags6 & IN6_IFF_DUPLICATED) != 0)
290 printf(" duplicated");
291 if ((flags6 & IN6_IFF_DETACHED) != 0)
292 printf(" detached");
293 if ((flags6 & IN6_IFF_DEPRECATED) != 0)
294 printf(" deprecated");
295 if ((flags6 & IN6_IFF_AUTOCONF) != 0)
296 printf(" autoconf");
297 if ((flags6 & IN6_IFF_TEMPORARY) != 0)
298 printf(" temporary");
300 if (scopeid)
301 printf(" scopeid 0x%x", scopeid);
303 if (ip6lifetime && (lifetime.ia6t_preferred || lifetime.ia6t_expire)) {
304 printf(" pltime");
305 if (lifetime.ia6t_preferred) {
306 printf(" %s", lifetime.ia6t_preferred < now.tv_sec
307 ? "0" : sec2str(lifetime.ia6t_preferred - now.tv_sec));
308 } else {
309 printf(" infty");
312 printf(" vltime");
313 if (lifetime.ia6t_expire) {
314 printf(" %s", lifetime.ia6t_expire < now.tv_sec
315 ? "0" : sec2str(lifetime.ia6t_expire - now.tv_sec));
316 } else {
317 printf(" infty");
321 putchar('\n');
324 #define SIN6(x) ((struct sockaddr_in6 *) &(x))
325 static struct sockaddr_in6 *sin6tab[] = {
326 SIN6(in6_ridreq.ifr_addr), SIN6(in6_addreq.ifra_addr),
327 SIN6(in6_addreq.ifra_prefixmask), SIN6(in6_addreq.ifra_dstaddr)
330 static void
331 in6_getprefix(const char *plen, int which)
333 struct sockaddr_in6 *sin = sin6tab[which];
334 u_char *cp;
335 int len = atoi(plen);
337 if ((len < 0) || (len > 128))
338 errx(1, "%s: bad value", plen);
339 sin->sin6_len = sizeof(*sin);
340 if (which != MASK)
341 sin->sin6_family = AF_INET6;
342 if ((len == 0) || (len == 128)) {
343 memset(&sin->sin6_addr, 0xff, sizeof(struct in6_addr));
344 return;
346 memset(&sin->sin6_addr, 0x00, sizeof(sin->sin6_addr));
347 for (cp = (u_char *)&sin->sin6_addr; len > 7; len -= 8)
348 *cp++ = 0xff;
349 *cp = 0xff << (8 - len);
352 static void
353 in6_getaddr(const char *s, int which)
355 struct sockaddr_in6 *sin = sin6tab[which];
356 struct addrinfo hints, *res;
357 int error = -1;
359 newaddr = true;
361 sin->sin6_len = sizeof(*sin);
362 if (which != MASK)
363 sin->sin6_family = AF_INET6;
365 if (which == ADDR) {
366 char *p = NULL;
367 if((p = strrchr(s, '/')) != NULL) {
368 *p = '\0';
369 in6_getprefix(p + 1, MASK);
370 explicit_prefix = 1;
374 if (sin->sin6_family == AF_INET6) {
375 memset(&hints, 0, sizeof(struct addrinfo));
376 hints.ai_family = AF_INET6;
377 error = getaddrinfo(s, NULL, &hints, &res);
379 if (error != 0) {
380 if (inet_pton(AF_INET6, s, &sin->sin6_addr) != 1)
381 errx(1, "%s: bad value", s);
382 } else
383 memcpy(sin, res->ai_addr, res->ai_addrlen);
386 static int
387 prefix(void *val, int size)
389 u_char *name = (u_char *)val;
390 int byte, bit, plen = 0;
392 for (byte = 0; byte < size; byte++, plen += 8)
393 if (name[byte] != 0xff)
394 break;
395 if (byte == size)
396 return (plen);
397 for (bit = 7; bit != 0; bit--, plen++)
398 if (!(name[byte] & (1 << bit)))
399 break;
400 for (; bit != 0; bit--)
401 if (name[byte] & (1 << bit))
402 return(0);
403 byte++;
404 for (; byte < size; byte++)
405 if (name[byte])
406 return(0);
407 return (plen);
410 static char *
411 sec2str(time_t total)
413 static char result[256];
414 int days, hours, mins, secs;
415 int first = 1;
416 char *p = result;
418 if (0) {
419 days = total / 3600 / 24;
420 hours = (total / 3600) % 24;
421 mins = (total / 60) % 60;
422 secs = total % 60;
424 if (days) {
425 first = 0;
426 p += sprintf(p, "%dd", days);
428 if (!first || hours) {
429 first = 0;
430 p += sprintf(p, "%dh", hours);
432 if (!first || mins) {
433 first = 0;
434 p += sprintf(p, "%dm", mins);
436 sprintf(p, "%ds", secs);
437 } else
438 sprintf(result, "%lu", (unsigned long)total);
440 return(result);
443 static void
444 in6_postproc(int s, const struct afswtch *afp)
446 if (explicit_prefix == 0) {
447 /* Aggregatable address architecture defines all prefixes
448 are 64. So, it is convenient to set prefixlen to 64 if
449 it is not specified. */
450 setifprefixlen("64", 0, s, afp);
451 /* in6_getprefix("64", MASK) if MASK is available here... */
455 static void
456 in6_status_tunnel(int s)
458 char src[NI_MAXHOST];
459 char dst[NI_MAXHOST];
460 struct in6_ifreq in6_ifr;
461 const struct sockaddr *sa = (const struct sockaddr *) &in6_ifr.ifr_addr;
463 memset(&in6_ifr, 0, sizeof(in6_ifr));
464 strlcpy(in6_ifr.ifr_name, IfName, sizeof(in6_ifr.ifr_name));
466 if (ioctl(s, SIOCGIFPSRCADDR_IN6, &in6_ifr) < 0)
467 return;
468 if (sa->sa_family != AF_INET6)
469 return;
470 in6_fillscopeid(&in6_ifr.ifr_addr);
471 if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0,
472 NI_NUMERICHOST) != 0)
473 src[0] = '\0';
475 if (ioctl(s, SIOCGIFPDSTADDR_IN6, &in6_ifr) < 0)
476 return;
477 if (sa->sa_family != AF_INET6)
478 return;
479 in6_fillscopeid(&in6_ifr.ifr_addr);
480 if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0,
481 NI_NUMERICHOST) != 0)
482 dst[0] = '\0';
484 printf("\ttunnel inet6 %s --> %s\n", src, dst);
487 static void
488 in6_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
490 struct in6_aliasreq addreq;
492 memset(&addreq, 0, sizeof(addreq));
493 strlcpy(addreq.ifra_name, IfName, sizeof(addreq.ifra_name));
494 memcpy(&addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
495 memcpy(&addreq.ifra_dstaddr, dstres->ai_addr, dstres->ai_addr->sa_len);
497 if (ioctl(s, SIOCSIFPHYADDR_IN6, &addreq) < 0)
498 warn("SIOCSIFPHYADDR_IN6");
501 static struct cmd inet6_cmds[] = {
502 DEF_CMD_ARG("prefixlen", setifprefixlen),
503 DEF_CMD("anycast", IN6_IFF_ANYCAST, setip6flags),
504 DEF_CMD("tentative", IN6_IFF_TENTATIVE, setip6flags),
505 DEF_CMD("-tentative", -IN6_IFF_TENTATIVE, setip6flags),
506 DEF_CMD("deprecated", IN6_IFF_DEPRECATED, setip6flags),
507 DEF_CMD("-deprecated", -IN6_IFF_DEPRECATED, setip6flags),
508 DEF_CMD("autoconf", IN6_IFF_AUTOCONF, setip6flags),
509 DEF_CMD("-autoconf", -IN6_IFF_AUTOCONF, setip6flags),
510 DEF_CMD_ARG("pltime", setip6pltime),
511 DEF_CMD_ARG("vltime", setip6vltime),
512 DEF_CMD("eui64", 0, setip6eui64),
515 static struct afswtch af_inet6 = {
516 .af_name = "inet6",
517 .af_af = AF_INET6,
518 .af_status = in6_status,
519 .af_getaddr = in6_getaddr,
520 .af_getprefix = in6_getprefix,
521 .af_postproc = in6_postproc,
522 .af_status_tunnel = in6_status_tunnel,
523 .af_settunnel = in6_set_tunnel,
524 .af_difaddr = SIOCDIFADDR_IN6,
525 .af_aifaddr = SIOCAIFADDR_IN6,
526 .af_ridreq = &in6_ridreq,
527 .af_addreq = &in6_addreq,
530 static void
531 in6_Lopt_cb(const char *arg __unused)
533 ip6lifetime++; /* print IPv6 address lifetime */
535 static struct option in6_Lopt = { "L", "[-L]", in6_Lopt_cb, NULL };
537 __constructor(113)
538 static void
539 inet6_ctor(void)
541 size_t i;
543 for (i = 0; i < nitems(inet6_cmds); i++)
544 cmd_register(&inet6_cmds[i]);
546 af_register(&af_inet6);
547 opt_register(&in6_Lopt);