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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 SPRINT_BUF(b1);
141 int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
142 if (iflink == 0)
143 printf("@NONE: ");
144 else {
145 printf("@%s: ", ll_idx_n2a(iflink, b1));
146 m_flag = ll_index_to_flags(iflink);
147 m_flag = !(m_flag & IFF_UP);
148 }
149 } else {
150 printf(": ");
151 }
152 print_link_flags(ifi->ifi_flags, m_flag);
153 }
154
155 if (tb[IFLA_MTU])
156 printf("mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU]));
157 if (tb[IFLA_QDISC])
158 printf("qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC]));
159#ifdef IFLA_MASTER
160 if (tb[IFLA_MASTER]) {
161 SPRINT_BUF(b1);
162 printf("master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1));
163 }
164#endif
165
166#ifdef IFF_DORMANT
167 if (tb[IFLA_OPERSTATE]) {
168 static const char operstate_labels[] ALIGN1 =
169 "UNKNOWN\0""NOTPRESENT\0""DOWN\0""LOWERLAYERDOWN\0"
170 "TESTING\0""DORMANT\0""UP\0";
171 printf("state %s ", nth_string(operstate_labels,
172 *(uint8_t *)RTA_DATA(tb[IFLA_OPERSTATE])));
173 }
174#endif
175 if (G_filter.showqueue)
176 print_queuelen((char*)RTA_DATA(tb[IFLA_IFNAME]));
177
178 if (!G_filter.family || G_filter.family == AF_PACKET) {
179 SPRINT_BUF(b1);
180 printf("%c link/%s ", _SL_, ll_type_n2a(ifi->ifi_type, b1));
181
182 if (tb[IFLA_ADDRESS]) {
183 fputs(ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
184 RTA_PAYLOAD(tb[IFLA_ADDRESS]),
185 ifi->ifi_type,
186 b1, sizeof(b1)), stdout);
187 }
188 if (tb[IFLA_BROADCAST]) {
189 if (ifi->ifi_flags & IFF_POINTOPOINT)
190 printf(" peer ");
191 else
192 printf(" brd ");
193 fputs(ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]),
194 RTA_PAYLOAD(tb[IFLA_BROADCAST]),
195 ifi->ifi_type,
196 b1, sizeof(b1)), stdout);
197 }
198 }
199 bb_putchar('\n');
200
201 return 0;
202}
203
204static int flush_update(void)
205{
206 if (rtnl_send(G_filter.rth, G_filter.flushb, G_filter.flushp) < 0) {
207 bb_perror_msg("can't send flush request");
208 return -1;
209 }
210 G_filter.flushp = 0;
211 return 0;
212}
213
214static int FAST_FUNC print_addrinfo(const struct sockaddr_nl *who UNUSED_PARAM,
215 struct nlmsghdr *n, void *arg UNUSED_PARAM)
216{
217 struct ifaddrmsg *ifa = NLMSG_DATA(n);
218 int len = n->nlmsg_len;
219 struct rtattr * rta_tb[IFA_MAX+1];
220 char abuf[256];
221 SPRINT_BUF(b1);
222
223 if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR)
224 return 0;
225 len -= NLMSG_LENGTH(sizeof(*ifa));
226 if (len < 0) {
227 bb_error_msg("wrong nlmsg len %d", len);
228 return -1;
229 }
230
231 if (G_filter.flushb && n->nlmsg_type != RTM_NEWADDR)
232 return 0;
233
234 memset(rta_tb, 0, sizeof(rta_tb));
235 parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
236
237 if (!rta_tb[IFA_LOCAL])
238 rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS];
239 if (!rta_tb[IFA_ADDRESS])
240 rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL];
241
242 if (G_filter.ifindex && G_filter.ifindex != ifa->ifa_index)
243 return 0;
244 if ((G_filter.scope ^ ifa->ifa_scope) & G_filter.scopemask)
245 return 0;
246 if ((G_filter.flags ^ ifa->ifa_flags) & G_filter.flagmask)
247 return 0;
248 if (G_filter.label) {
249 const char *label;
250 if (rta_tb[IFA_LABEL])
251 label = RTA_DATA(rta_tb[IFA_LABEL]);
252 else
253 label = ll_idx_n2a(ifa->ifa_index, b1);
254 if (fnmatch(G_filter.label, label, 0) != 0)
255 return 0;
256 }
257 if (G_filter.pfx.family) {
258 if (rta_tb[IFA_LOCAL]) {
259 inet_prefix dst;
260 memset(&dst, 0, sizeof(dst));
261 dst.family = ifa->ifa_family;
262 memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL]));
263 if (inet_addr_match(&dst, &G_filter.pfx, G_filter.pfx.bitlen))
264 return 0;
265 }
266 }
267
268 if (G_filter.flushb) {
269 struct nlmsghdr *fn;
270 if (NLMSG_ALIGN(G_filter.flushp) + n->nlmsg_len > G_filter.flushe) {
271 if (flush_update())
272 return -1;
273 }
274 fn = (struct nlmsghdr*)(G_filter.flushb + NLMSG_ALIGN(G_filter.flushp));
275 memcpy(fn, n, n->nlmsg_len);
276 fn->nlmsg_type = RTM_DELADDR;
277 fn->nlmsg_flags = NLM_F_REQUEST;
278 fn->nlmsg_seq = ++G_filter.rth->seq;
279 G_filter.flushp = (((char*)fn) + n->nlmsg_len) - G_filter.flushb;
280 G_filter.flushed = 1;
281 return 0;
282 }
283
284 if (n->nlmsg_type == RTM_DELADDR)
285 printf("Deleted ");
286
287 if (G_filter.oneline)
288 printf("%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
289 if (ifa->ifa_family == AF_INET)
290 printf(" inet ");
291 else if (ifa->ifa_family == AF_INET6)
292 printf(" inet6 ");
293 else
294 printf(" family %d ", ifa->ifa_family);
295
296 if (rta_tb[IFA_LOCAL]) {
297 fputs(rt_addr_n2a(ifa->ifa_family,
298 RTA_DATA(rta_tb[IFA_LOCAL]),
299 abuf, sizeof(abuf)), stdout);
300
301 if (rta_tb[IFA_ADDRESS] == NULL
302 || memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]), 4) == 0
303 ) {
304 printf("/%d ", ifa->ifa_prefixlen);
305 } else {
306 printf(" peer %s/%d ",
307 rt_addr_n2a(ifa->ifa_family,
308 RTA_DATA(rta_tb[IFA_ADDRESS]),
309 abuf, sizeof(abuf)),
310 ifa->ifa_prefixlen);
311 }
312 }
313
314 if (rta_tb[IFA_BROADCAST]) {
315 printf("brd %s ",
316 rt_addr_n2a(ifa->ifa_family,
317 RTA_DATA(rta_tb[IFA_BROADCAST]),
318 abuf, sizeof(abuf))
319 );
320 }
321 if (rta_tb[IFA_ANYCAST]) {
322 printf("any %s ",
323 rt_addr_n2a(ifa->ifa_family,
324 RTA_DATA(rta_tb[IFA_ANYCAST]),
325 abuf, sizeof(abuf))
326 );
327 }
328 printf("scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1));
329 if (ifa->ifa_flags & IFA_F_SECONDARY) {
330 ifa->ifa_flags &= ~IFA_F_SECONDARY;
331 printf("secondary ");
332 }
333 if (ifa->ifa_flags & IFA_F_TENTATIVE) {
334 ifa->ifa_flags &= ~IFA_F_TENTATIVE;
335 printf("tentative ");
336 }
337 if (ifa->ifa_flags & IFA_F_DEPRECATED) {
338 ifa->ifa_flags &= ~IFA_F_DEPRECATED;
339 printf("deprecated ");
340 }
341 if (!(ifa->ifa_flags & IFA_F_PERMANENT)) {
342 printf("dynamic ");
343 } else
344 ifa->ifa_flags &= ~IFA_F_PERMANENT;
345 if (ifa->ifa_flags)
346 printf("flags %02x ", ifa->ifa_flags);
347 if (rta_tb[IFA_LABEL])
348 fputs((char*)RTA_DATA(rta_tb[IFA_LABEL]), stdout);
349 if (rta_tb[IFA_CACHEINFO]) {
350 struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]);
351 char buf[128];
352 bb_putchar(_SL_);
353 if (ci->ifa_valid == 0xFFFFFFFFU)
354 sprintf(buf, "valid_lft forever");
355 else
356 sprintf(buf, "valid_lft %dsec", ci->ifa_valid);
357 if (ci->ifa_prefered == 0xFFFFFFFFU)
358 sprintf(buf+strlen(buf), " preferred_lft forever");
359 else
360 sprintf(buf+strlen(buf), " preferred_lft %dsec", ci->ifa_prefered);
361 printf(" %s", buf);
362 }
363 bb_putchar('\n');
364
365 return 0;
366}
367
368
369struct nlmsg_list {
370 struct nlmsg_list *next;
371 struct nlmsghdr h;
372};
373
374static int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo)
375{
376 for (; ainfo; ainfo = ainfo->next) {
377 struct nlmsghdr *n = &ainfo->h;
378 struct ifaddrmsg *ifa = NLMSG_DATA(n);
379
380 if (n->nlmsg_type != RTM_NEWADDR)
381 continue;
382 if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifa)))
383 return -1;
384 if (ifa->ifa_index != ifindex
385 || (G_filter.family && G_filter.family != ifa->ifa_family)
386 ) {
387 continue;
388 }
389 print_addrinfo(NULL, n, NULL);
390 }
391 return 0;
392}
393
394
395static int FAST_FUNC store_nlmsg(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
396{
397 struct nlmsg_list **linfo = (struct nlmsg_list**)arg;
398 struct nlmsg_list *h;
399 struct nlmsg_list **lp;
400
401 h = xzalloc(n->nlmsg_len + sizeof(void*));
402
403 memcpy(&h->h, n, n->nlmsg_len);
404
405
406 for (lp = linfo; *lp; lp = &(*lp)->next)
407 continue;
408 *lp = h;
409
410 ll_remember_index(who, n, NULL);
411 return 0;
412}
413
414static void ipaddr_reset_filter(int _oneline)
415{
416 memset(&G_filter, 0, sizeof(G_filter));
417 G_filter.oneline = _oneline;
418}
419
420
421int FAST_FUNC ipaddr_list_or_flush(char **argv, int flush)
422{
423 static const char option[] ALIGN1 = "to\0""scope\0""up\0""label\0""dev\0";
424
425 struct nlmsg_list *linfo = NULL;
426 struct nlmsg_list *ainfo = NULL;
427 struct nlmsg_list *l;
428 struct rtnl_handle rth;
429 char *filter_dev = NULL;
430 int no_link = 0;
431
432 ipaddr_reset_filter(oneline);
433 G_filter.showqueue = 1;
434
435 if (G_filter.family == AF_UNSPEC)
436 G_filter.family = preferred_family;
437
438 if (flush) {
439 if (!*argv) {
440 bb_error_msg_and_die(bb_msg_requires_arg, "flush");
441 }
442 if (G_filter.family == AF_PACKET) {
443 bb_error_msg_and_die("can't flush link addresses");
444 }
445 }
446
447 while (*argv) {
448 const smalluint key = index_in_strings(option, *argv);
449 if (key == 0) {
450 NEXT_ARG();
451 get_prefix(&G_filter.pfx, *argv, G_filter.family);
452 if (G_filter.family == AF_UNSPEC) {
453 G_filter.family = G_filter.pfx.family;
454 }
455 } else if (key == 1) {
456 uint32_t scope = 0;
457 NEXT_ARG();
458 G_filter.scopemask = -1;
459 if (rtnl_rtscope_a2n(&scope, *argv)) {
460 if (strcmp(*argv, "all") != 0) {
461 invarg(*argv, "scope");
462 }
463 scope = RT_SCOPE_NOWHERE;
464 G_filter.scopemask = 0;
465 }
466 G_filter.scope = scope;
467 } else if (key == 2) {
468 G_filter.up = 1;
469 } else if (key == 3) {
470 NEXT_ARG();
471 G_filter.label = *argv;
472 } else {
473 if (key == 4)
474 NEXT_ARG();
475 if (filter_dev)
476 duparg2("dev", *argv);
477 filter_dev = *argv;
478 }
479 argv++;
480 }
481
482 xrtnl_open(&rth);
483
484 xrtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK);
485 xrtnl_dump_filter(&rth, store_nlmsg, &linfo);
486
487 if (filter_dev) {
488 G_filter.ifindex = xll_name_to_index(filter_dev);
489 }
490
491 if (flush) {
492 char flushb[4096-512];
493
494 G_filter.flushb = flushb;
495 G_filter.flushp = 0;
496 G_filter.flushe = sizeof(flushb);
497 G_filter.rth = &rth;
498
499 for (;;) {
500 xrtnl_wilddump_request(&rth, G_filter.family, RTM_GETADDR);
501 G_filter.flushed = 0;
502 xrtnl_dump_filter(&rth, print_addrinfo, NULL);
503 if (G_filter.flushed == 0) {
504 return 0;
505 }
506 if (flush_update() < 0) {
507 return 1;
508 }
509 }
510 }
511
512 if (G_filter.family != AF_PACKET) {
513 xrtnl_wilddump_request(&rth, G_filter.family, RTM_GETADDR);
514 xrtnl_dump_filter(&rth, store_nlmsg, &ainfo);
515 }
516
517
518 if (G_filter.family && G_filter.family != AF_PACKET) {
519 struct nlmsg_list **lp;
520 lp = &linfo;
521
522 if (G_filter.oneline)
523 no_link = 1;
524
525 while ((l = *lp) != NULL) {
526 int ok = 0;
527 struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
528 struct nlmsg_list *a;
529
530 for (a = ainfo; a; a = a->next) {
531 struct nlmsghdr *n = &a->h;
532 struct ifaddrmsg *ifa = NLMSG_DATA(n);
533
534 if (ifa->ifa_index != ifi->ifi_index
535 || (G_filter.family && G_filter.family != ifa->ifa_family)
536 ) {
537 continue;
538 }
539 if ((G_filter.scope ^ ifa->ifa_scope) & G_filter.scopemask)
540 continue;
541 if ((G_filter.flags ^ ifa->ifa_flags) & G_filter.flagmask)
542 continue;
543 if (G_filter.pfx.family || G_filter.label) {
544 struct rtattr *tb[IFA_MAX+1];
545 memset(tb, 0, sizeof(tb));
546 parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n));
547 if (!tb[IFA_LOCAL])
548 tb[IFA_LOCAL] = tb[IFA_ADDRESS];
549
550 if (G_filter.pfx.family && tb[IFA_LOCAL]) {
551 inet_prefix dst;
552 memset(&dst, 0, sizeof(dst));
553 dst.family = ifa->ifa_family;
554 memcpy(&dst.data, RTA_DATA(tb[IFA_LOCAL]), RTA_PAYLOAD(tb[IFA_LOCAL]));
555 if (inet_addr_match(&dst, &G_filter.pfx, G_filter.pfx.bitlen))
556 continue;
557 }
558 if (G_filter.label) {
559 SPRINT_BUF(b1);
560 const char *label;
561 if (tb[IFA_LABEL])
562 label = RTA_DATA(tb[IFA_LABEL]);
563 else
564 label = ll_idx_n2a(ifa->ifa_index, b1);
565 if (fnmatch(G_filter.label, label, 0) != 0)
566 continue;
567 }
568 }
569
570 ok = 1;
571 break;
572 }
573 if (!ok)
574 *lp = l->next;
575 else
576 lp = &l->next;
577 }
578 }
579
580 for (l = linfo; l; l = l->next) {
581 if (no_link || print_linkinfo(&l->h) == 0) {
582 struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
583 if (G_filter.family != AF_PACKET)
584 print_selected_addrinfo(ifi->ifi_index, ainfo);
585 }
586 }
587
588 return 0;
589}
590
591static int default_scope(inet_prefix *lcl)
592{
593 if (lcl->family == AF_INET) {
594 if (lcl->bytelen >= 1 && *(uint8_t*)&lcl->data == 127)
595 return RT_SCOPE_HOST;
596 }
597 return 0;
598}
599
600
601static int ipaddr_modify(int cmd, char **argv)
602{
603 static const char option[] ALIGN1 =
604 "peer\0""remote\0""broadcast\0""brd\0"
605 "anycast\0""scope\0""dev\0""label\0""local\0";
606 struct rtnl_handle rth;
607 struct {
608 struct nlmsghdr n;
609 struct ifaddrmsg ifa;
610 char buf[256];
611 } req;
612 char *d = NULL;
613 char *l = NULL;
614 inet_prefix lcl;
615 inet_prefix peer;
616 int local_len = 0;
617 int peer_len = 0;
618 int brd_len = 0;
619 int any_len = 0;
620 bool scoped = 0;
621
622 memset(&req, 0, sizeof(req));
623
624 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
625 req.n.nlmsg_flags = NLM_F_REQUEST;
626 req.n.nlmsg_type = cmd;
627 req.ifa.ifa_family = preferred_family;
628
629 while (*argv) {
630 unsigned arg = index_in_strings(option, *argv);
631
632 if ((int)arg >= 0)
633 NEXT_ARG();
634
635 if (arg <= 1) {
636 if (peer_len) {
637 duparg("peer", *argv);
638 }
639 get_prefix(&peer, *argv, req.ifa.ifa_family);
640 peer_len = peer.bytelen;
641 if (req.ifa.ifa_family == AF_UNSPEC) {
642 req.ifa.ifa_family = peer.family;
643 }
644 addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen);
645 req.ifa.ifa_prefixlen = peer.bitlen;
646 } else if (arg <= 3) {
647 inet_prefix addr;
648 if (brd_len) {
649 duparg("broadcast", *argv);
650 }
651 if (LONE_CHAR(*argv, '+')) {
652 brd_len = -1;
653 } else if (LONE_DASH(*argv)) {
654 brd_len = -2;
655 } else {
656 get_addr(&addr, *argv, req.ifa.ifa_family);
657 if (req.ifa.ifa_family == AF_UNSPEC)
658 req.ifa.ifa_family = addr.family;
659 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen);
660 brd_len = addr.bytelen;
661 }
662 } else if (arg == 4) {
663 inet_prefix addr;
664 if (any_len) {
665 duparg("anycast", *argv);
666 }
667 get_addr(&addr, *argv, req.ifa.ifa_family);
668 if (req.ifa.ifa_family == AF_UNSPEC) {
669 req.ifa.ifa_family = addr.family;
670 }
671 addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen);
672 any_len = addr.bytelen;
673 } else if (arg == 5) {
674 uint32_t scope = 0;
675 if (rtnl_rtscope_a2n(&scope, *argv)) {
676 invarg(*argv, "scope");
677 }
678 req.ifa.ifa_scope = scope;
679 scoped = 1;
680 } else if (arg == 6) {
681 d = *argv;
682 } else if (arg == 7) {
683 l = *argv;
684 addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l) + 1);
685 } else {
686
687 if (local_len) {
688 duparg2("local", *argv);
689 }
690 get_prefix(&lcl, *argv, req.ifa.ifa_family);
691 if (req.ifa.ifa_family == AF_UNSPEC) {
692 req.ifa.ifa_family = lcl.family;
693 }
694 addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen);
695 local_len = lcl.bytelen;
696 }
697 argv++;
698 }
699
700 if (!d) {
701
702 bb_error_msg_and_die("need \"dev IFACE\"");
703 }
704 if (l && strncmp(d, l, strlen(d)) != 0) {
705 bb_error_msg_and_die("\"dev\" (%s) must match \"label\" (%s)", d, l);
706 }
707
708 if (peer_len == 0 && local_len && cmd != RTM_DELADDR) {
709 peer = lcl;
710 addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen);
711 }
712 if (req.ifa.ifa_prefixlen == 0)
713 req.ifa.ifa_prefixlen = lcl.bitlen;
714
715 if (brd_len < 0 && cmd != RTM_DELADDR) {
716 inet_prefix brd;
717 int i;
718 if (req.ifa.ifa_family != AF_INET) {
719 bb_error_msg_and_die("broadcast can be set only for IPv4 addresses");
720 }
721 brd = peer;
722 if (brd.bitlen <= 30) {
723 for (i = 31; i >= brd.bitlen; i--) {
724 if (brd_len == -1)
725 brd.data[0] |= htonl(1<<(31-i));
726 else
727 brd.data[0] &= ~htonl(1<<(31-i));
728 }
729 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen);
730 brd_len = brd.bytelen;
731 }
732 }
733 if (!scoped && cmd != RTM_DELADDR)
734 req.ifa.ifa_scope = default_scope(&lcl);
735
736 xrtnl_open(&rth);
737
738 ll_init_map(&rth);
739
740 req.ifa.ifa_index = xll_name_to_index(d);
741
742 if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
743 return 2;
744
745 return 0;
746}
747
748
749int FAST_FUNC do_ipaddr(char **argv)
750{
751 static const char commands[] ALIGN1 =
752 "add\0""delete\0""list\0""show\0""lst\0""flush\0";
753 int cmd = 2;
754 if (*argv) {
755 cmd = index_in_substrings(commands, *argv);
756 if (cmd < 0)
757 invarg(*argv, applet_name);
758 argv++;
759 if (cmd <= 1)
760 return ipaddr_modify((cmd == 0) ? RTM_NEWADDR : RTM_DELADDR, argv);
761 }
762
763 return ipaddr_list_or_flush(argv, cmd == 5);
764}
765
