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13#include <fnmatch.h>
14#include <net/if.h>
15#include <net/if_arp.h>
16
17#include "ip_common.h"
18#include "rt_names.h"
19#include "utils.h"
20
21#ifndef IFF_LOWER_UP
22
23#define IFF_LOWER_UP 0x10000
24#endif
25
26typedef struct filter_t {
27 char *label;
28 char *flushb;
29 struct rtnl_handle *rth;
30 int scope, scopemask;
31 int flags, flagmask;
32 int flushp;
33 int flushe;
34 int ifindex;
35 family_t family;
36 smallint showqueue;
37 smallint oneline;
38 smallint up;
39 smallint flushed;
40 inet_prefix pfx;
41} filter_t;
42
43#define filter (*(filter_t*)&bb_common_bufsiz1)
44
45
46static void print_link_flags(unsigned flags, unsigned mdown)
47{
48 static const int flag_masks[] = {
49 IFF_LOOPBACK, IFF_BROADCAST, IFF_POINTOPOINT,
50 IFF_MULTICAST, IFF_NOARP, IFF_UP, IFF_LOWER_UP };
51 static const char flag_labels[] ALIGN1 =
52 "LOOPBACK\0""BROADCAST\0""POINTOPOINT\0"
53 "MULTICAST\0""NOARP\0""UP\0""LOWER_UP\0";
54
55 bb_putchar('<');
56 flags &= ~IFF_RUNNING;
57#if 0
58 _PF(ALLMULTI);
59 _PF(PROMISC);
60 _PF(MASTER);
61 _PF(SLAVE);
62 _PF(DEBUG);
63 _PF(DYNAMIC);
64 _PF(AUTOMEDIA);
65 _PF(PORTSEL);
66 _PF(NOTRAILERS);
67#endif
68 flags = print_flags_separated(flag_masks, flag_labels, flags, ",");
69 if (flags)
70 printf("%x", flags);
71 if (mdown)
72 printf(",M-DOWN");
73 printf("> ");
74}
75
76static void print_queuelen(char *name)
77{
78 struct ifreq ifr;
79 int s;
80
81 s = socket(AF_INET, SOCK_STREAM, 0);
82 if (s < 0)
83 return;
84
85 memset(&ifr, 0, sizeof(ifr));
86 strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
87 if (ioctl_or_warn(s, SIOCGIFTXQLEN, &ifr) < 0) {
88 close(s);
89 return;
90 }
91 close(s);
92
93 if (ifr.ifr_qlen)
94 printf("qlen %d", ifr.ifr_qlen);
95}
96
97static int print_linkinfo(const struct nlmsghdr *n)
98{
99 struct ifinfomsg *ifi = NLMSG_DATA(n);
100 struct rtattr * tb[IFLA_MAX+1];
101 int len = n->nlmsg_len;
102 unsigned m_flag = 0;
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 (filter.ifindex && ifi->ifi_index != filter.ifindex)
112 return 0;
113 if (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 (filter.label
123 && (!filter.family || filter.family == AF_PACKET)
124 && fnmatch(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 tb[IFLA_IFNAME] ? (char*)RTA_DATA(tb[IFLA_IFNAME]) : "<nil>");
134
135 if (tb[IFLA_LINK]) {
136 SPRINT_BUF(b1);
137 int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
138 if (iflink == 0)
139 printf("@NONE: ");
140 else {
141 printf("@%s: ", ll_idx_n2a(iflink, b1));
142 m_flag = ll_index_to_flags(iflink);
143 m_flag = !(m_flag & IFF_UP);
144 }
145 } else {
146 printf(": ");
147 }
148 print_link_flags(ifi->ifi_flags, m_flag);
149
150 if (tb[IFLA_MTU])
151 printf("mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU]));
152 if (tb[IFLA_QDISC])
153 printf("qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC]));
154#ifdef IFLA_MASTER
155 if (tb[IFLA_MASTER]) {
156 SPRINT_BUF(b1);
157 printf("master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1));
158 }
159#endif
160 if (filter.showqueue)
161 print_queuelen((char*)RTA_DATA(tb[IFLA_IFNAME]));
162
163 if (!filter.family || filter.family == AF_PACKET) {
164 SPRINT_BUF(b1);
165 printf("%c link/%s ", _SL_, ll_type_n2a(ifi->ifi_type, b1, sizeof(b1)));
166
167 if (tb[IFLA_ADDRESS]) {
168 fputs(ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
169 RTA_PAYLOAD(tb[IFLA_ADDRESS]),
170 ifi->ifi_type,
171 b1, sizeof(b1)), stdout);
172 }
173 if (tb[IFLA_BROADCAST]) {
174 if (ifi->ifi_flags & IFF_POINTOPOINT)
175 printf(" peer ");
176 else
177 printf(" brd ");
178 fputs(ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]),
179 RTA_PAYLOAD(tb[IFLA_BROADCAST]),
180 ifi->ifi_type,
181 b1, sizeof(b1)), stdout);
182 }
183 }
184 bb_putchar('\n');
185
186 return 0;
187}
188
189static int flush_update(void)
190{
191 if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) {
192 bb_perror_msg("failed to send flush request");
193 return -1;
194 }
195 filter.flushp = 0;
196 return 0;
197}
198
199static int print_addrinfo(const struct sockaddr_nl *who UNUSED_PARAM,
200 struct nlmsghdr *n, void *arg UNUSED_PARAM)
201{
202 struct ifaddrmsg *ifa = NLMSG_DATA(n);
203 int len = n->nlmsg_len;
204 struct rtattr * rta_tb[IFA_MAX+1];
205 char abuf[256];
206 SPRINT_BUF(b1);
207
208 if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR)
209 return 0;
210 len -= NLMSG_LENGTH(sizeof(*ifa));
211 if (len < 0) {
212 bb_error_msg("wrong nlmsg len %d", len);
213 return -1;
214 }
215
216 if (filter.flushb && n->nlmsg_type != RTM_NEWADDR)
217 return 0;
218
219 memset(rta_tb, 0, sizeof(rta_tb));
220 parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
221
222 if (!rta_tb[IFA_LOCAL])
223 rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS];
224 if (!rta_tb[IFA_ADDRESS])
225 rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL];
226
227 if (filter.ifindex && filter.ifindex != ifa->ifa_index)
228 return 0;
229 if ((filter.scope ^ ifa->ifa_scope) & filter.scopemask)
230 return 0;
231 if ((filter.flags ^ ifa->ifa_flags) & filter.flagmask)
232 return 0;
233 if (filter.label) {
234 const char *label;
235 if (rta_tb[IFA_LABEL])
236 label = RTA_DATA(rta_tb[IFA_LABEL]);
237 else
238 label = ll_idx_n2a(ifa->ifa_index, b1);
239 if (fnmatch(filter.label, label, 0) != 0)
240 return 0;
241 }
242 if (filter.pfx.family) {
243 if (rta_tb[IFA_LOCAL]) {
244 inet_prefix dst;
245 memset(&dst, 0, sizeof(dst));
246 dst.family = ifa->ifa_family;
247 memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL]));
248 if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
249 return 0;
250 }
251 }
252
253 if (filter.flushb) {
254 struct nlmsghdr *fn;
255 if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
256 if (flush_update())
257 return -1;
258 }
259 fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
260 memcpy(fn, n, n->nlmsg_len);
261 fn->nlmsg_type = RTM_DELADDR;
262 fn->nlmsg_flags = NLM_F_REQUEST;
263 fn->nlmsg_seq = ++filter.rth->seq;
264 filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
265 filter.flushed = 1;
266 return 0;
267 }
268
269 if (n->nlmsg_type == RTM_DELADDR)
270 printf("Deleted ");
271
272 if (filter.oneline)
273 printf("%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
274 if (ifa->ifa_family == AF_INET)
275 printf(" inet ");
276 else if (ifa->ifa_family == AF_INET6)
277 printf(" inet6 ");
278 else
279 printf(" family %d ", ifa->ifa_family);
280
281 if (rta_tb[IFA_LOCAL]) {
282 fputs(rt_addr_n2a(ifa->ifa_family,
283 RTA_PAYLOAD(rta_tb[IFA_LOCAL]),
284 RTA_DATA(rta_tb[IFA_LOCAL]),
285 abuf, sizeof(abuf)), stdout);
286
287 if (rta_tb[IFA_ADDRESS] == NULL ||
288 memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]), 4) == 0) {
289 printf("/%d ", ifa->ifa_prefixlen);
290 } else {
291 printf(" peer %s/%d ",
292 rt_addr_n2a(ifa->ifa_family,
293 RTA_PAYLOAD(rta_tb[IFA_ADDRESS]),
294 RTA_DATA(rta_tb[IFA_ADDRESS]),
295 abuf, sizeof(abuf)),
296 ifa->ifa_prefixlen);
297 }
298 }
299
300 if (rta_tb[IFA_BROADCAST]) {
301 printf("brd %s ",
302 rt_addr_n2a(ifa->ifa_family,
303 RTA_PAYLOAD(rta_tb[IFA_BROADCAST]),
304 RTA_DATA(rta_tb[IFA_BROADCAST]),
305 abuf, sizeof(abuf)));
306 }
307 if (rta_tb[IFA_ANYCAST]) {
308 printf("any %s ",
309 rt_addr_n2a(ifa->ifa_family,
310 RTA_PAYLOAD(rta_tb[IFA_ANYCAST]),
311 RTA_DATA(rta_tb[IFA_ANYCAST]),
312 abuf, sizeof(abuf)));
313 }
314 printf("scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1, sizeof(b1)));
315 if (ifa->ifa_flags & IFA_F_SECONDARY) {
316 ifa->ifa_flags &= ~IFA_F_SECONDARY;
317 printf("secondary ");
318 }
319 if (ifa->ifa_flags & IFA_F_TENTATIVE) {
320 ifa->ifa_flags &= ~IFA_F_TENTATIVE;
321 printf("tentative ");
322 }
323 if (ifa->ifa_flags & IFA_F_DEPRECATED) {
324 ifa->ifa_flags &= ~IFA_F_DEPRECATED;
325 printf("deprecated ");
326 }
327 if (!(ifa->ifa_flags & IFA_F_PERMANENT)) {
328 printf("dynamic ");
329 } else
330 ifa->ifa_flags &= ~IFA_F_PERMANENT;
331 if (ifa->ifa_flags)
332 printf("flags %02x ", ifa->ifa_flags);
333 if (rta_tb[IFA_LABEL])
334 fputs((char*)RTA_DATA(rta_tb[IFA_LABEL]), stdout);
335 if (rta_tb[IFA_CACHEINFO]) {
336 struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]);
337 char buf[128];
338 bb_putchar(_SL_);
339 if (ci->ifa_valid == 0xFFFFFFFFU)
340 sprintf(buf, "valid_lft forever");
341 else
342 sprintf(buf, "valid_lft %dsec", ci->ifa_valid);
343 if (ci->ifa_prefered == 0xFFFFFFFFU)
344 sprintf(buf+strlen(buf), " preferred_lft forever");
345 else
346 sprintf(buf+strlen(buf), " preferred_lft %dsec", ci->ifa_prefered);
347 printf(" %s", buf);
348 }
349 bb_putchar('\n');
350
351 return 0;
352}
353
354
355struct nlmsg_list
356{
357 struct nlmsg_list *next;
358 struct nlmsghdr h;
359};
360
361static int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo)
362{
363 for (; ainfo; ainfo = ainfo->next) {
364 struct nlmsghdr *n = &ainfo->h;
365 struct ifaddrmsg *ifa = NLMSG_DATA(n);
366
367 if (n->nlmsg_type != RTM_NEWADDR)
368 continue;
369
370 if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifa)))
371 return -1;
372
373 if (ifa->ifa_index != ifindex ||
374 (filter.family && filter.family != ifa->ifa_family))
375 continue;
376
377 print_addrinfo(NULL, n, NULL);
378 }
379 return 0;
380}
381
382
383static int store_nlmsg(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
384{
385 struct nlmsg_list **linfo = (struct nlmsg_list**)arg;
386 struct nlmsg_list *h;
387 struct nlmsg_list **lp;
388
389 h = malloc(n->nlmsg_len+sizeof(void*));
390 if (h == NULL)
391 return -1;
392
393 memcpy(&h->h, n, n->nlmsg_len);
394 h->next = NULL;
395
396 for (lp = linfo; *lp; lp = &(*lp)->next)
397 continue;
398 *lp = h;
399
400 ll_remember_index(who, n, NULL);
401 return 0;
402}
403
404static void ipaddr_reset_filter(int _oneline)
405{
406 memset(&filter, 0, sizeof(filter));
407 filter.oneline = _oneline;
408}
409
410
411int ipaddr_list_or_flush(char **argv, int flush)
412{
413 static const char option[] ALIGN1 = "to\0""scope\0""up\0""label\0""dev\0";
414
415 struct nlmsg_list *linfo = NULL;
416 struct nlmsg_list *ainfo = NULL;
417 struct nlmsg_list *l;
418 struct rtnl_handle rth;
419 char *filter_dev = NULL;
420 int no_link = 0;
421
422 ipaddr_reset_filter(oneline);
423 filter.showqueue = 1;
424
425 if (filter.family == AF_UNSPEC)
426 filter.family = preferred_family;
427
428 if (flush) {
429 if (!*argv) {
430 bb_error_msg_and_die(bb_msg_requires_arg, "flush");
431 }
432 if (filter.family == AF_PACKET) {
433 bb_error_msg_and_die("cannot flush link addresses");
434 }
435 }
436
437 while (*argv) {
438 const int option_num = index_in_strings(option, *argv);
439 switch (option_num) {
440 case 0:
441 NEXT_ARG();
442 get_prefix(&filter.pfx, *argv, filter.family);
443 if (filter.family == AF_UNSPEC) {
444 filter.family = filter.pfx.family;
445 }
446 break;
447 case 1:
448 {
449 uint32_t scope = 0;
450 NEXT_ARG();
451 filter.scopemask = -1;
452 if (rtnl_rtscope_a2n(&scope, *argv)) {
453 if (strcmp(*argv, "all") != 0) {
454 invarg(*argv, "scope");
455 }
456 scope = RT_SCOPE_NOWHERE;
457 filter.scopemask = 0;
458 }
459 filter.scope = scope;
460 break;
461 }
462 case 2:
463 filter.up = 1;
464 break;
465 case 3:
466 NEXT_ARG();
467 filter.label = *argv;
468 break;
469 case 4:
470 NEXT_ARG();
471 default:
472 if (filter_dev) {
473 duparg2("dev", *argv);
474 }
475 filter_dev = *argv;
476 }
477 argv++;
478 }
479
480 xrtnl_open(&rth);
481
482 xrtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK);
483 xrtnl_dump_filter(&rth, store_nlmsg, &linfo);
484
485 if (filter_dev) {
486 filter.ifindex = xll_name_to_index(filter_dev);
487 }
488
489 if (flush) {
490 char flushb[4096-512];
491
492 filter.flushb = flushb;
493 filter.flushp = 0;
494 filter.flushe = sizeof(flushb);
495 filter.rth = &rth;
496
497 for (;;) {
498 xrtnl_wilddump_request(&rth, filter.family, RTM_GETADDR);
499 filter.flushed = 0;
500 xrtnl_dump_filter(&rth, print_addrinfo, NULL);
501 if (filter.flushed == 0) {
502 return 0;
503 }
504 if (flush_update() < 0)
505 return 1;
506 }
507 }
508
509 if (filter.family != AF_PACKET) {
510 xrtnl_wilddump_request(&rth, filter.family, RTM_GETADDR);
511 xrtnl_dump_filter(&rth, store_nlmsg, &ainfo);
512 }
513
514
515 if (filter.family && filter.family != AF_PACKET) {
516 struct nlmsg_list **lp;
517 lp = &linfo;
518
519 if (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 (filter.family && filter.family != ifa->ifa_family))
533 continue;
534 if ((filter.scope ^ ifa->ifa_scope) & filter.scopemask)
535 continue;
536 if ((filter.flags ^ ifa->ifa_flags) & filter.flagmask)
537 continue;
538 if (filter.pfx.family || filter.label) {
539 struct rtattr *tb[IFA_MAX+1];
540 memset(tb, 0, sizeof(tb));
541 parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n));
542 if (!tb[IFA_LOCAL])
543 tb[IFA_LOCAL] = tb[IFA_ADDRESS];
544
545 if (filter.pfx.family && tb[IFA_LOCAL]) {
546 inet_prefix dst;
547 memset(&dst, 0, sizeof(dst));
548 dst.family = ifa->ifa_family;
549 memcpy(&dst.data, RTA_DATA(tb[IFA_LOCAL]), RTA_PAYLOAD(tb[IFA_LOCAL]));
550 if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
551 continue;
552 }
553 if (filter.label) {
554 SPRINT_BUF(b1);
555 const char *label;
556 if (tb[IFA_LABEL])
557 label = RTA_DATA(tb[IFA_LABEL]);
558 else
559 label = ll_idx_n2a(ifa->ifa_index, b1);
560 if (fnmatch(filter.label, label, 0) != 0)
561 continue;
562 }
563 }
564
565 ok = 1;
566 break;
567 }
568 if (!ok)
569 *lp = l->next;
570 else
571 lp = &l->next;
572 }
573 }
574
575 for (l = linfo; l; l = l->next) {
576 if (no_link || print_linkinfo(&l->h) == 0) {
577 struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
578 if (filter.family != AF_PACKET)
579 print_selected_addrinfo(ifi->ifi_index, ainfo);
580 }
581 }
582
583 return 0;
584}
585
586static int default_scope(inet_prefix *lcl)
587{
588 if (lcl->family == AF_INET) {
589 if (lcl->bytelen >= 1 && *(uint8_t*)&lcl->data == 127)
590 return RT_SCOPE_HOST;
591 }
592 return 0;
593}
594
595
596static int ipaddr_modify(int cmd, char **argv)
597{
598 static const char option[] ALIGN1 =
599 "peer\0""remote\0""broadcast\0""brd\0"
600 "anycast\0""scope\0""dev\0""label\0""local\0";
601 struct rtnl_handle rth;
602 struct {
603 struct nlmsghdr n;
604 struct ifaddrmsg ifa;
605 char buf[256];
606 } req;
607 char *d = NULL;
608 char *l = NULL;
609 inet_prefix lcl;
610 inet_prefix peer;
611 int local_len = 0;
612 int peer_len = 0;
613 int brd_len = 0;
614 int any_len = 0;
615 bool scoped = 0;
616
617 memset(&req, 0, sizeof(req));
618
619 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
620 req.n.nlmsg_flags = NLM_F_REQUEST;
621 req.n.nlmsg_type = cmd;
622 req.ifa.ifa_family = preferred_family;
623
624 while (*argv) {
625 const int option_num = index_in_strings(option, *argv);
626 switch (option_num) {
627 case 0:
628 case 1:
629 NEXT_ARG();
630
631 if (peer_len) {
632 duparg("peer", *argv);
633 }
634 get_prefix(&peer, *argv, req.ifa.ifa_family);
635 peer_len = peer.bytelen;
636 if (req.ifa.ifa_family == AF_UNSPEC) {
637 req.ifa.ifa_family = peer.family;
638 }
639 addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen);
640 req.ifa.ifa_prefixlen = peer.bitlen;
641 break;
642 case 2:
643 case 3:
644 {
645 inet_prefix addr;
646 NEXT_ARG();
647 if (brd_len) {
648 duparg("broadcast", *argv);
649 }
650 if (LONE_CHAR(*argv, '+')) {
651 brd_len = -1;
652 } else if (LONE_DASH(*argv)) {
653 brd_len = -2;
654 } else {
655 get_addr(&addr, *argv, req.ifa.ifa_family);
656 if (req.ifa.ifa_family == AF_UNSPEC)
657 req.ifa.ifa_family = addr.family;
658 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen);
659 brd_len = addr.bytelen;
660 }
661 break;
662 }
663 case 4:
664 {
665 inet_prefix addr;
666 NEXT_ARG();
667 if (any_len) {
668 duparg("anycast", *argv);
669 }
670 get_addr(&addr, *argv, req.ifa.ifa_family);
671 if (req.ifa.ifa_family == AF_UNSPEC) {
672 req.ifa.ifa_family = addr.family;
673 }
674 addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen);
675 any_len = addr.bytelen;
676 break;
677 }
678 case 5:
679 {
680 uint32_t scope = 0;
681 NEXT_ARG();
682 if (rtnl_rtscope_a2n(&scope, *argv)) {
683 invarg(*argv, "scope");
684 }
685 req.ifa.ifa_scope = scope;
686 scoped = 1;
687 break;
688 }
689 case 6:
690 NEXT_ARG();
691 d = *argv;
692 break;
693 case 7:
694 NEXT_ARG();
695 l = *argv;
696 addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l)+1);
697 break;
698 case 8:
699 NEXT_ARG();
700 default:
701 if (local_len) {
702 duparg2("local", *argv);
703 }
704 get_prefix(&lcl, *argv, req.ifa.ifa_family);
705 if (req.ifa.ifa_family == AF_UNSPEC) {
706 req.ifa.ifa_family = lcl.family;
707 }
708 addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen);
709 local_len = lcl.bytelen;
710 }
711 argv++;
712 }
713
714 if (d == NULL) {
715 bb_error_msg(bb_msg_requires_arg, "\"dev\"");
716 return -1;
717 }
718 if (l && strncmp(d, l, strlen(d)) != 0) {
719 bb_error_msg_and_die("\"dev\" (%s) must match \"label\" (%s)", d, l);
720 }
721
722 if (peer_len == 0 && local_len && cmd != RTM_DELADDR) {
723 peer = lcl;
724 addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen);
725 }
726 if (req.ifa.ifa_prefixlen == 0)
727 req.ifa.ifa_prefixlen = lcl.bitlen;
728
729 if (brd_len < 0 && cmd != RTM_DELADDR) {
730 inet_prefix brd;
731 int i;
732 if (req.ifa.ifa_family != AF_INET) {
733 bb_error_msg_and_die("broadcast can be set only for IPv4 addresses");
734 }
735 brd = peer;
736 if (brd.bitlen <= 30) {
737 for (i=31; i>=brd.bitlen; i--) {
738 if (brd_len == -1)
739 brd.data[0] |= htonl(1<<(31-i));
740 else
741 brd.data[0] &= ~htonl(1<<(31-i));
742 }
743 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen);
744 brd_len = brd.bytelen;
745 }
746 }
747 if (!scoped && cmd != RTM_DELADDR)
748 req.ifa.ifa_scope = default_scope(&lcl);
749
750 xrtnl_open(&rth);
751
752 ll_init_map(&rth);
753
754 req.ifa.ifa_index = xll_name_to_index(d);
755
756 if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
757 return 2;
758
759 return 0;
760}
761
762
763int do_ipaddr(char **argv)
764{
765 static const char commands[] ALIGN1 =
766 "add\0""delete\0""list\0""show\0""lst\0""flush\0";
767
768 int command_num = 2;
769
770 if (*argv) {
771 command_num = index_in_substrings(commands, *argv);
772 if (command_num < 0 || command_num > 5)
773 bb_error_msg_and_die("unknown command %s", *argv);
774 argv++;
775 }
776 if (command_num == 0)
777 return ipaddr_modify(RTM_NEWADDR, argv);
778 if (command_num == 1)
779 return ipaddr_modify(RTM_DELADDR, argv);
780 if (command_num == 5)
781 return ipaddr_list_or_flush(argv, 1);
782
783 return ipaddr_list_or_flush(argv, 0);
784}
785
