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11#include <fnmatch.h>
12#include <net/if.h>
13#include <net/if_arp.h>
14
15#include "ip_common.h"
16#include "rt_names.h"
17#include "utils.h"
18
19#ifndef IFF_LOWER_UP
20
21#define IFF_LOWER_UP 0x10000
22#endif
23
24struct filter_t {
25 char *label;
26 char *flushb;
27 struct rtnl_handle *rth;
28 int scope, scopemask;
29 int flags, flagmask;
30 int flushp;
31 int flushe;
32 int ifindex;
33 family_t family;
34 smallint showqueue;
35 smallint oneline;
36 smallint up;
37 smallint flushed;
38 inet_prefix pfx;
39} FIX_ALIASING;
40typedef struct filter_t filter_t;
41
42#define G_filter (*(filter_t*)&bb_common_bufsiz1)
43
44
45static void print_link_flags(unsigned flags, unsigned mdown)
46{
47 static const int flag_masks[] = {
48 IFF_LOOPBACK, IFF_BROADCAST, IFF_POINTOPOINT,
49 IFF_MULTICAST, IFF_NOARP, IFF_UP, IFF_LOWER_UP };
50 static const char flag_labels[] ALIGN1 =
51 "LOOPBACK\0""BROADCAST\0""POINTOPOINT\0"
52 "MULTICAST\0""NOARP\0""UP\0""LOWER_UP\0";
53
54 bb_putchar('<');
55 if (flags & IFF_UP && !(flags & IFF_RUNNING))
56 printf("NO-CARRIER,");
57 flags &= ~IFF_RUNNING;
58#if 0
59 _PF(ALLMULTI);
60 _PF(PROMISC);
61 _PF(MASTER);
62 _PF(SLAVE);
63 _PF(DEBUG);
64 _PF(DYNAMIC);
65 _PF(AUTOMEDIA);
66 _PF(PORTSEL);
67 _PF(NOTRAILERS);
68#endif
69 flags = print_flags_separated(flag_masks, flag_labels, flags, ",");
70 if (flags)
71 printf("%x", flags);
72 if (mdown)
73 printf(",M-DOWN");
74 printf("> ");
75}
76
77static void print_queuelen(char *name)
78{
79 struct ifreq ifr;
80 int s;
81
82 s = socket(AF_INET, SOCK_STREAM, 0);
83 if (s < 0)
84 return;
85
86 memset(&ifr, 0, sizeof(ifr));
87 strncpy_IFNAMSIZ(ifr.ifr_name, name);
88 if (ioctl_or_warn(s, SIOCGIFTXQLEN, &ifr) < 0) {
89 close(s);
90 return;
91 }
92 close(s);
93
94 if (ifr.ifr_qlen)
95 printf("qlen %d", ifr.ifr_qlen);
96}
97
98static NOINLINE int print_linkinfo(const struct nlmsghdr *n)
99{
100 struct ifinfomsg *ifi = NLMSG_DATA(n);
101 struct rtattr *tb[IFLA_MAX+1];
102 int len = n->nlmsg_len;
103
104 if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK)
105 return 0;
106
107 len -= NLMSG_LENGTH(sizeof(*ifi));
108 if (len < 0)
109 return -1;
110
111 if (G_filter.ifindex && ifi->ifi_index != G_filter.ifindex)
112 return 0;
113 if (G_filter.up && !(ifi->ifi_flags & IFF_UP))
114 return 0;
115
116 memset(tb, 0, sizeof(tb));
117 parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
118 if (tb[IFLA_IFNAME] == NULL) {
119 bb_error_msg("nil ifname");
120 return -1;
121 }
122 if (G_filter.label
123 && (!G_filter.family || G_filter.family == AF_PACKET)
124 && fnmatch(G_filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0)
125 ) {
126 return 0;
127 }
128
129 if (n->nlmsg_type == RTM_DELLINK)
130 printf("Deleted ");
131
132 printf("%d: %s", ifi->ifi_index,
133
134 (char*)RTA_DATA(tb[IFLA_IFNAME])
135 );
136
137 {
138 unsigned m_flag = 0;
139 if (tb[IFLA_LINK]) {
140 int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
141 if (iflink == 0)
142 printf("@NONE: ");
143 else {
144 printf("@%s: ", ll_index_to_name(iflink));
145 m_flag = ll_index_to_flags(iflink);
146 m_flag = !(m_flag & IFF_UP);
147 }
148 } else {
149 printf(": ");
150 }
151 print_link_flags(ifi->ifi_flags, m_flag);
152 }
153
154 if (tb[IFLA_MTU])
155 printf("mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU]));
156 if (tb[IFLA_QDISC])
157 printf("qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC]));
158#ifdef IFLA_MASTER
159 if (tb[IFLA_MASTER]) {
160 printf("master %s ", ll_index_to_name(*(int*)RTA_DATA(tb[IFLA_MASTER])));
161 }
162#endif
163
164#ifdef IFF_DORMANT
165 if (tb[IFLA_OPERSTATE]) {
166 static const char operstate_labels[] ALIGN1 =
167 "UNKNOWN\0""NOTPRESENT\0""DOWN\0""LOWERLAYERDOWN\0"
168 "TESTING\0""DORMANT\0""UP\0";
169 printf("state %s ", nth_string(operstate_labels,
170 *(uint8_t *)RTA_DATA(tb[IFLA_OPERSTATE])));
171 }
172#endif
173 if (G_filter.showqueue)
174 print_queuelen((char*)RTA_DATA(tb[IFLA_IFNAME]));
175
176 if (!G_filter.family || G_filter.family == AF_PACKET) {
177 SPRINT_BUF(b1);
178 printf("%c link/%s ", _SL_, ll_type_n2a(ifi->ifi_type, b1));
179
180 if (tb[IFLA_ADDRESS]) {
181 fputs(ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
182 RTA_PAYLOAD(tb[IFLA_ADDRESS]),
183 ifi->ifi_type,
184 b1, sizeof(b1)), stdout);
185 }
186 if (tb[IFLA_BROADCAST]) {
187 if (ifi->ifi_flags & IFF_POINTOPOINT)
188 printf(" peer ");
189 else
190 printf(" brd ");
191 fputs(ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]),
192 RTA_PAYLOAD(tb[IFLA_BROADCAST]),
193 ifi->ifi_type,
194 b1, sizeof(b1)), stdout);
195 }
196 }
197 bb_putchar('\n');
198
199 return 0;
200}
201
202static int flush_update(void)
203{
204 if (rtnl_send(G_filter.rth, G_filter.flushb, G_filter.flushp) < 0) {
205 bb_perror_msg("can't send flush request");
206 return -1;
207 }
208 G_filter.flushp = 0;
209 return 0;
210}
211
212static int FAST_FUNC print_addrinfo(const struct sockaddr_nl *who UNUSED_PARAM,
213 struct nlmsghdr *n, void *arg UNUSED_PARAM)
214{
215 struct ifaddrmsg *ifa = NLMSG_DATA(n);
216 int len = n->nlmsg_len;
217 struct rtattr * rta_tb[IFA_MAX+1];
218 char abuf[256];
219
220 if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR)
221 return 0;
222 len -= NLMSG_LENGTH(sizeof(*ifa));
223 if (len < 0) {
224 bb_error_msg("wrong nlmsg len %d", len);
225 return -1;
226 }
227
228 if (G_filter.flushb && n->nlmsg_type != RTM_NEWADDR)
229 return 0;
230
231 memset(rta_tb, 0, sizeof(rta_tb));
232 parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
233
234 if (!rta_tb[IFA_LOCAL])
235 rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS];
236 if (!rta_tb[IFA_ADDRESS])
237 rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL];
238
239 if (G_filter.ifindex && G_filter.ifindex != ifa->ifa_index)
240 return 0;
241 if ((G_filter.scope ^ ifa->ifa_scope) & G_filter.scopemask)
242 return 0;
243 if ((G_filter.flags ^ ifa->ifa_flags) & G_filter.flagmask)
244 return 0;
245 if (G_filter.label) {
246 const char *label;
247 if (rta_tb[IFA_LABEL])
248 label = RTA_DATA(rta_tb[IFA_LABEL]);
249 else
250 label = ll_index_to_name(ifa->ifa_index);
251 if (fnmatch(G_filter.label, label, 0) != 0)
252 return 0;
253 }
254 if (G_filter.pfx.family) {
255 if (rta_tb[IFA_LOCAL]) {
256 inet_prefix dst;
257 memset(&dst, 0, sizeof(dst));
258 dst.family = ifa->ifa_family;
259 memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL]));
260 if (inet_addr_match(&dst, &G_filter.pfx, G_filter.pfx.bitlen))
261 return 0;
262 }
263 }
264
265 if (G_filter.flushb) {
266 struct nlmsghdr *fn;
267 if (NLMSG_ALIGN(G_filter.flushp) + n->nlmsg_len > G_filter.flushe) {
268 if (flush_update())
269 return -1;
270 }
271 fn = (struct nlmsghdr*)(G_filter.flushb + NLMSG_ALIGN(G_filter.flushp));
272 memcpy(fn, n, n->nlmsg_len);
273 fn->nlmsg_type = RTM_DELADDR;
274 fn->nlmsg_flags = NLM_F_REQUEST;
275 fn->nlmsg_seq = ++G_filter.rth->seq;
276 G_filter.flushp = (((char*)fn) + n->nlmsg_len) - G_filter.flushb;
277 G_filter.flushed = 1;
278 return 0;
279 }
280
281 if (n->nlmsg_type == RTM_DELADDR)
282 printf("Deleted ");
283
284 if (G_filter.oneline)
285 printf("%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
286 if (ifa->ifa_family == AF_INET)
287 printf(" inet ");
288 else if (ifa->ifa_family == AF_INET6)
289 printf(" inet6 ");
290 else
291 printf(" family %d ", ifa->ifa_family);
292
293 if (rta_tb[IFA_LOCAL]) {
294 fputs(rt_addr_n2a(ifa->ifa_family,
295 RTA_DATA(rta_tb[IFA_LOCAL]),
296 abuf, sizeof(abuf)), stdout);
297
298 if (rta_tb[IFA_ADDRESS] == NULL
299 || memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]), 4) == 0
300 ) {
301 printf("/%d ", ifa->ifa_prefixlen);
302 } else {
303 printf(" peer %s/%d ",
304 rt_addr_n2a(ifa->ifa_family,
305 RTA_DATA(rta_tb[IFA_ADDRESS]),
306 abuf, sizeof(abuf)),
307 ifa->ifa_prefixlen);
308 }
309 }
310
311 if (rta_tb[IFA_BROADCAST]) {
312 printf("brd %s ",
313 rt_addr_n2a(ifa->ifa_family,
314 RTA_DATA(rta_tb[IFA_BROADCAST]),
315 abuf, sizeof(abuf))
316 );
317 }
318 if (rta_tb[IFA_ANYCAST]) {
319 printf("any %s ",
320 rt_addr_n2a(ifa->ifa_family,
321 RTA_DATA(rta_tb[IFA_ANYCAST]),
322 abuf, sizeof(abuf))
323 );
324 }
325 printf("scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope));
326 if (ifa->ifa_flags & IFA_F_SECONDARY) {
327 ifa->ifa_flags &= ~IFA_F_SECONDARY;
328 printf("secondary ");
329 }
330 if (ifa->ifa_flags & IFA_F_TENTATIVE) {
331 ifa->ifa_flags &= ~IFA_F_TENTATIVE;
332 printf("tentative ");
333 }
334 if (ifa->ifa_flags & IFA_F_DEPRECATED) {
335 ifa->ifa_flags &= ~IFA_F_DEPRECATED;
336 printf("deprecated ");
337 }
338 if (!(ifa->ifa_flags & IFA_F_PERMANENT)) {
339 printf("dynamic ");
340 } else
341 ifa->ifa_flags &= ~IFA_F_PERMANENT;
342 if (ifa->ifa_flags)
343 printf("flags %02x ", ifa->ifa_flags);
344 if (rta_tb[IFA_LABEL])
345 fputs((char*)RTA_DATA(rta_tb[IFA_LABEL]), stdout);
346 if (rta_tb[IFA_CACHEINFO]) {
347 struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]);
348 char buf[128];
349 bb_putchar(_SL_);
350 if (ci->ifa_valid == 0xFFFFFFFFU)
351 sprintf(buf, "valid_lft forever");
352 else
353 sprintf(buf, "valid_lft %dsec", ci->ifa_valid);
354 if (ci->ifa_prefered == 0xFFFFFFFFU)
355 sprintf(buf+strlen(buf), " preferred_lft forever");
356 else
357 sprintf(buf+strlen(buf), " preferred_lft %dsec", ci->ifa_prefered);
358 printf(" %s", buf);
359 }
360 bb_putchar('\n');
361
362 return 0;
363}
364
365
366struct nlmsg_list {
367 struct nlmsg_list *next;
368 struct nlmsghdr h;
369};
370
371static int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo)
372{
373 for (; ainfo; ainfo = ainfo->next) {
374 struct nlmsghdr *n = &ainfo->h;
375 struct ifaddrmsg *ifa = NLMSG_DATA(n);
376
377 if (n->nlmsg_type != RTM_NEWADDR)
378 continue;
379 if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifa)))
380 return -1;
381 if (ifa->ifa_index != ifindex
382 || (G_filter.family && G_filter.family != ifa->ifa_family)
383 ) {
384 continue;
385 }
386 print_addrinfo(NULL, n, NULL);
387 }
388 return 0;
389}
390
391
392static int FAST_FUNC store_nlmsg(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
393{
394 struct nlmsg_list **linfo = (struct nlmsg_list**)arg;
395 struct nlmsg_list *h;
396 struct nlmsg_list **lp;
397
398 h = xzalloc(n->nlmsg_len + sizeof(void*));
399
400 memcpy(&h->h, n, n->nlmsg_len);
401
402
403 for (lp = linfo; *lp; lp = &(*lp)->next)
404 continue;
405 *lp = h;
406
407 ll_remember_index(who, n, NULL);
408 return 0;
409}
410
411static void ipaddr_reset_filter(int _oneline)
412{
413 memset(&G_filter, 0, sizeof(G_filter));
414 G_filter.oneline = _oneline;
415}
416
417
418int FAST_FUNC ipaddr_list_or_flush(char **argv, int flush)
419{
420 static const char option[] ALIGN1 = "to\0""scope\0""up\0""label\0""dev\0";
421
422 struct nlmsg_list *linfo = NULL;
423 struct nlmsg_list *ainfo = NULL;
424 struct nlmsg_list *l;
425 struct rtnl_handle rth;
426 char *filter_dev = NULL;
427 int no_link = 0;
428
429 ipaddr_reset_filter(oneline);
430 G_filter.showqueue = 1;
431
432 if (G_filter.family == AF_UNSPEC)
433 G_filter.family = preferred_family;
434
435 if (flush) {
436 if (!*argv) {
437 bb_error_msg_and_die(bb_msg_requires_arg, "flush");
438 }
439 if (G_filter.family == AF_PACKET) {
440 bb_error_msg_and_die("can't flush link addresses");
441 }
442 }
443
444 while (*argv) {
445 const smalluint key = index_in_strings(option, *argv);
446 if (key == 0) {
447 NEXT_ARG();
448 get_prefix(&G_filter.pfx, *argv, G_filter.family);
449 if (G_filter.family == AF_UNSPEC) {
450 G_filter.family = G_filter.pfx.family;
451 }
452 } else if (key == 1) {
453 uint32_t scope = 0;
454 NEXT_ARG();
455 G_filter.scopemask = -1;
456 if (rtnl_rtscope_a2n(&scope, *argv)) {
457 if (strcmp(*argv, "all") != 0) {
458 invarg(*argv, "scope");
459 }
460 scope = RT_SCOPE_NOWHERE;
461 G_filter.scopemask = 0;
462 }
463 G_filter.scope = scope;
464 } else if (key == 2) {
465 G_filter.up = 1;
466 } else if (key == 3) {
467 NEXT_ARG();
468 G_filter.label = *argv;
469 } else {
470 if (key == 4)
471 NEXT_ARG();
472 if (filter_dev)
473 duparg2("dev", *argv);
474 filter_dev = *argv;
475 }
476 argv++;
477 }
478
479 xrtnl_open(&rth);
480
481 xrtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK);
482 xrtnl_dump_filter(&rth, store_nlmsg, &linfo);
483
484 if (filter_dev) {
485 G_filter.ifindex = xll_name_to_index(filter_dev);
486 }
487
488 if (flush) {
489 char flushb[4096-512];
490
491 G_filter.flushb = flushb;
492 G_filter.flushp = 0;
493 G_filter.flushe = sizeof(flushb);
494 G_filter.rth = &rth;
495
496 for (;;) {
497 xrtnl_wilddump_request(&rth, G_filter.family, RTM_GETADDR);
498 G_filter.flushed = 0;
499 xrtnl_dump_filter(&rth, print_addrinfo, NULL);
500 if (G_filter.flushed == 0) {
501 return 0;
502 }
503 if (flush_update() < 0) {
504 return 1;
505 }
506 }
507 }
508
509 if (G_filter.family != AF_PACKET) {
510 xrtnl_wilddump_request(&rth, G_filter.family, RTM_GETADDR);
511 xrtnl_dump_filter(&rth, store_nlmsg, &ainfo);
512 }
513
514
515 if (G_filter.family && G_filter.family != AF_PACKET) {
516 struct nlmsg_list **lp;
517 lp = &linfo;
518
519 if (G_filter.oneline)
520 no_link = 1;
521
522 while ((l = *lp) != NULL) {
523 int ok = 0;
524 struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
525 struct nlmsg_list *a;
526
527 for (a = ainfo; a; a = a->next) {
528 struct nlmsghdr *n = &a->h;
529 struct ifaddrmsg *ifa = NLMSG_DATA(n);
530
531 if (ifa->ifa_index != ifi->ifi_index
532 || (G_filter.family && G_filter.family != ifa->ifa_family)
533 ) {
534 continue;
535 }
536 if ((G_filter.scope ^ ifa->ifa_scope) & G_filter.scopemask)
537 continue;
538 if ((G_filter.flags ^ ifa->ifa_flags) & G_filter.flagmask)
539 continue;
540 if (G_filter.pfx.family || G_filter.label) {
541 struct rtattr *tb[IFA_MAX+1];
542 memset(tb, 0, sizeof(tb));
543 parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n));
544 if (!tb[IFA_LOCAL])
545 tb[IFA_LOCAL] = tb[IFA_ADDRESS];
546
547 if (G_filter.pfx.family && tb[IFA_LOCAL]) {
548 inet_prefix dst;
549 memset(&dst, 0, sizeof(dst));
550 dst.family = ifa->ifa_family;
551 memcpy(&dst.data, RTA_DATA(tb[IFA_LOCAL]), RTA_PAYLOAD(tb[IFA_LOCAL]));
552 if (inet_addr_match(&dst, &G_filter.pfx, G_filter.pfx.bitlen))
553 continue;
554 }
555 if (G_filter.label) {
556 const char *label;
557 if (tb[IFA_LABEL])
558 label = RTA_DATA(tb[IFA_LABEL]);
559 else
560 label = ll_index_to_name(ifa->ifa_index);
561 if (fnmatch(G_filter.label, label, 0) != 0)
562 continue;
563 }
564 }
565
566 ok = 1;
567 break;
568 }
569 if (!ok)
570 *lp = l->next;
571 else
572 lp = &l->next;
573 }
574 }
575
576 for (l = linfo; l; l = l->next) {
577 if (no_link || print_linkinfo(&l->h) == 0) {
578 struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
579 if (G_filter.family != AF_PACKET)
580 print_selected_addrinfo(ifi->ifi_index, ainfo);
581 }
582 }
583
584 return 0;
585}
586
587static int default_scope(inet_prefix *lcl)
588{
589 if (lcl->family == AF_INET) {
590 if (lcl->bytelen >= 1 && *(uint8_t*)&lcl->data == 127)
591 return RT_SCOPE_HOST;
592 }
593 return 0;
594}
595
596
597static int ipaddr_modify(int cmd, int flags, char **argv)
598{
599 static const char option[] ALIGN1 =
600 "peer\0""remote\0""broadcast\0""brd\0"
601 "anycast\0""scope\0""dev\0""label\0""local\0";
602 struct rtnl_handle rth;
603 struct {
604 struct nlmsghdr n;
605 struct ifaddrmsg ifa;
606 char buf[256];
607 } req;
608 char *d = NULL;
609 char *l = NULL;
610 inet_prefix lcl;
611 inet_prefix peer;
612 int local_len = 0;
613 int peer_len = 0;
614 int brd_len = 0;
615 int any_len = 0;
616 bool scoped = 0;
617
618 memset(&req, 0, sizeof(req));
619
620 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
621 req.n.nlmsg_flags = NLM_F_REQUEST | flags;
622 req.n.nlmsg_type = cmd;
623 req.ifa.ifa_family = preferred_family;
624
625 while (*argv) {
626 unsigned arg = index_in_strings(option, *argv);
627
628 if ((int)arg >= 0)
629 NEXT_ARG();
630
631 if (arg <= 1) {
632 if (peer_len) {
633 duparg("peer", *argv);
634 }
635 get_prefix(&peer, *argv, req.ifa.ifa_family);
636 peer_len = peer.bytelen;
637 if (req.ifa.ifa_family == AF_UNSPEC) {
638 req.ifa.ifa_family = peer.family;
639 }
640 addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen);
641 req.ifa.ifa_prefixlen = peer.bitlen;
642 } else if (arg <= 3) {
643 inet_prefix addr;
644 if (brd_len) {
645 duparg("broadcast", *argv);
646 }
647 if (LONE_CHAR(*argv, '+')) {
648 brd_len = -1;
649 } else if (LONE_DASH(*argv)) {
650 brd_len = -2;
651 } else {
652 get_addr(&addr, *argv, req.ifa.ifa_family);
653 if (req.ifa.ifa_family == AF_UNSPEC)
654 req.ifa.ifa_family = addr.family;
655 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen);
656 brd_len = addr.bytelen;
657 }
658 } else if (arg == 4) {
659 inet_prefix addr;
660 if (any_len) {
661 duparg("anycast", *argv);
662 }
663 get_addr(&addr, *argv, req.ifa.ifa_family);
664 if (req.ifa.ifa_family == AF_UNSPEC) {
665 req.ifa.ifa_family = addr.family;
666 }
667 addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen);
668 any_len = addr.bytelen;
669 } else if (arg == 5) {
670 uint32_t scope = 0;
671 if (rtnl_rtscope_a2n(&scope, *argv)) {
672 invarg(*argv, "scope");
673 }
674 req.ifa.ifa_scope = scope;
675 scoped = 1;
676 } else if (arg == 6) {
677 d = *argv;
678 } else if (arg == 7) {
679 l = *argv;
680 addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l) + 1);
681 } else {
682
683 if (local_len) {
684 duparg2("local", *argv);
685 }
686 get_prefix(&lcl, *argv, req.ifa.ifa_family);
687 if (req.ifa.ifa_family == AF_UNSPEC) {
688 req.ifa.ifa_family = lcl.family;
689 }
690 addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen);
691 local_len = lcl.bytelen;
692 }
693 argv++;
694 }
695
696 if (!d) {
697
698 bb_error_msg_and_die("need \"dev IFACE\"");
699 }
700 if (l && !is_prefixed_with(l, d)) {
701 bb_error_msg_and_die("\"dev\" (%s) must match \"label\" (%s)", d, l);
702 }
703
704 if (peer_len == 0 && local_len && cmd != RTM_DELADDR) {
705 peer = lcl;
706 addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen);
707 }
708 if (req.ifa.ifa_prefixlen == 0)
709 req.ifa.ifa_prefixlen = lcl.bitlen;
710
711 if (brd_len < 0 && cmd != RTM_DELADDR) {
712 inet_prefix brd;
713 int i;
714 if (req.ifa.ifa_family != AF_INET) {
715 bb_error_msg_and_die("broadcast can be set only for IPv4 addresses");
716 }
717 brd = peer;
718 if (brd.bitlen <= 30) {
719 for (i = 31; i >= brd.bitlen; i--) {
720 if (brd_len == -1)
721 brd.data[0] |= htonl(1<<(31-i));
722 else
723 brd.data[0] &= ~htonl(1<<(31-i));
724 }
725 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen);
726 brd_len = brd.bytelen;
727 }
728 }
729 if (!scoped && cmd != RTM_DELADDR)
730 req.ifa.ifa_scope = default_scope(&lcl);
731
732 xrtnl_open(&rth);
733
734 ll_init_map(&rth);
735
736 req.ifa.ifa_index = xll_name_to_index(d);
737
738 if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
739 return 2;
740
741 return 0;
742}
743
744
745int FAST_FUNC do_ipaddr(char **argv)
746{
747 static const char commands[] ALIGN1 =
748
749 "add\0""change\0""chg\0""replace\0""delete\0""list\0""show\0""lst\0""flush\0";
750 int cmd = 2;
751 if (*argv) {
752 cmd = index_in_substrings(commands, *argv);
753 if (cmd < 0)
754 invarg(*argv, applet_name);
755 argv++;
756 if (cmd <= 4) {
757 return ipaddr_modify(
758 cmd == 4 ? RTM_DELADDR : RTM_NEWADDR,
759
760 cmd == 0 ? NLM_F_CREATE|NLM_F_EXCL :
761 cmd == 1 || cmd == 2 ? NLM_F_REPLACE :
762 cmd == 3 ? NLM_F_CREATE|NLM_F_REPLACE :
763 0
764 , argv);
765 }
766 }
767 return ipaddr_list_or_flush(argv, cmd == 8);
768}
769
