diff options
Diffstat (limited to 'networking/libiproute/ipaddress.c')
-rw-r--r-- | networking/libiproute/ipaddress.c | 824 |
1 files changed, 824 insertions, 0 deletions
diff --git a/networking/libiproute/ipaddress.c b/networking/libiproute/ipaddress.c new file mode 100644 index 000000000..2a267fef6 --- /dev/null +++ b/networking/libiproute/ipaddress.c | |||
@@ -0,0 +1,824 @@ | |||
1 | /* vi: set sw=4 ts=4: */ | ||
2 | /* | ||
3 | * ipaddress.c "ip address". | ||
4 | * | ||
5 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. | ||
6 | * | ||
7 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | ||
8 | * | ||
9 | * Changes: | ||
10 | * Laszlo Valko <valko@linux.karinthy.hu> 990223: address label must be zero terminated | ||
11 | */ | ||
12 | |||
13 | #include "libbb.h" | ||
14 | #include <sys/socket.h> | ||
15 | #include <sys/ioctl.h> | ||
16 | |||
17 | #include <fnmatch.h> | ||
18 | #include <string.h> | ||
19 | #include <unistd.h> | ||
20 | |||
21 | #include <net/if.h> | ||
22 | #include <net/if_arp.h> | ||
23 | |||
24 | #include "rt_names.h" | ||
25 | #include "utils.h" | ||
26 | #include "ip_common.h" | ||
27 | |||
28 | |||
29 | static struct | ||
30 | { | ||
31 | int ifindex; | ||
32 | int family; | ||
33 | int oneline; | ||
34 | int showqueue; | ||
35 | inet_prefix pfx; | ||
36 | int scope, scopemask; | ||
37 | int flags, flagmask; | ||
38 | int up; | ||
39 | char *label; | ||
40 | int flushed; | ||
41 | char *flushb; | ||
42 | int flushp; | ||
43 | int flushe; | ||
44 | struct rtnl_handle *rth; | ||
45 | } filter; | ||
46 | |||
47 | static void print_link_flags(FILE *fp, unsigned flags, unsigned mdown) | ||
48 | { | ||
49 | fprintf(fp, "<"); | ||
50 | flags &= ~IFF_RUNNING; | ||
51 | #define _PF(f) if (flags&IFF_##f) { \ | ||
52 | flags &= ~IFF_##f ; \ | ||
53 | fprintf(fp, #f "%s", flags ? "," : ""); } | ||
54 | _PF(LOOPBACK); | ||
55 | _PF(BROADCAST); | ||
56 | _PF(POINTOPOINT); | ||
57 | _PF(MULTICAST); | ||
58 | _PF(NOARP); | ||
59 | #if 0 | ||
60 | _PF(ALLMULTI); | ||
61 | _PF(PROMISC); | ||
62 | _PF(MASTER); | ||
63 | _PF(SLAVE); | ||
64 | _PF(DEBUG); | ||
65 | _PF(DYNAMIC); | ||
66 | _PF(AUTOMEDIA); | ||
67 | _PF(PORTSEL); | ||
68 | _PF(NOTRAILERS); | ||
69 | #endif | ||
70 | _PF(UP); | ||
71 | #undef _PF | ||
72 | if (flags) | ||
73 | fprintf(fp, "%x", flags); | ||
74 | if (mdown) | ||
75 | fprintf(fp, ",M-DOWN"); | ||
76 | fprintf(fp, "> "); | ||
77 | } | ||
78 | |||
79 | static void print_queuelen(char *name) | ||
80 | { | ||
81 | struct ifreq ifr; | ||
82 | int s; | ||
83 | |||
84 | s = socket(AF_INET, SOCK_STREAM, 0); | ||
85 | if (s < 0) | ||
86 | return; | ||
87 | |||
88 | memset(&ifr, 0, sizeof(ifr)); | ||
89 | strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); | ||
90 | if (ioctl(s, SIOCGIFTXQLEN, &ifr) < 0) { | ||
91 | perror("SIOCGIFXQLEN"); | ||
92 | close(s); | ||
93 | return; | ||
94 | } | ||
95 | close(s); | ||
96 | |||
97 | if (ifr.ifr_qlen) | ||
98 | printf("qlen %d", ifr.ifr_qlen); | ||
99 | } | ||
100 | |||
101 | static int print_linkinfo(struct sockaddr_nl ATTRIBUTE_UNUSED *who, | ||
102 | const struct nlmsghdr *n, void ATTRIBUTE_UNUSED *arg) | ||
103 | { | ||
104 | FILE *fp = (FILE*)arg; | ||
105 | struct ifinfomsg *ifi = NLMSG_DATA(n); | ||
106 | struct rtattr * tb[IFLA_MAX+1]; | ||
107 | int len = n->nlmsg_len; | ||
108 | unsigned m_flag = 0; | ||
109 | |||
110 | if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK) | ||
111 | return 0; | ||
112 | |||
113 | len -= NLMSG_LENGTH(sizeof(*ifi)); | ||
114 | if (len < 0) | ||
115 | return -1; | ||
116 | |||
117 | if (filter.ifindex && ifi->ifi_index != filter.ifindex) | ||
118 | return 0; | ||
119 | if (filter.up && !(ifi->ifi_flags&IFF_UP)) | ||
120 | return 0; | ||
121 | |||
122 | memset(tb, 0, sizeof(tb)); | ||
123 | parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); | ||
124 | if (tb[IFLA_IFNAME] == NULL) { | ||
125 | bb_error_msg("nil ifname"); | ||
126 | return -1; | ||
127 | } | ||
128 | if (filter.label && | ||
129 | (!filter.family || filter.family == AF_PACKET) && | ||
130 | fnmatch(filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0)) | ||
131 | return 0; | ||
132 | |||
133 | if (n->nlmsg_type == RTM_DELLINK) | ||
134 | fprintf(fp, "Deleted "); | ||
135 | |||
136 | fprintf(fp, "%d: %s", ifi->ifi_index, | ||
137 | tb[IFLA_IFNAME] ? (char*)RTA_DATA(tb[IFLA_IFNAME]) : "<nil>"); | ||
138 | |||
139 | if (tb[IFLA_LINK]) { | ||
140 | SPRINT_BUF(b1); | ||
141 | int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]); | ||
142 | if (iflink == 0) | ||
143 | fprintf(fp, "@NONE: "); | ||
144 | else { | ||
145 | fprintf(fp, "@%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 | fprintf(fp, ": "); | ||
151 | } | ||
152 | print_link_flags(fp, ifi->ifi_flags, m_flag); | ||
153 | |||
154 | if (tb[IFLA_MTU]) | ||
155 | fprintf(fp, "mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU])); | ||
156 | if (tb[IFLA_QDISC]) | ||
157 | fprintf(fp, "qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC])); | ||
158 | #ifdef IFLA_MASTER | ||
159 | if (tb[IFLA_MASTER]) { | ||
160 | SPRINT_BUF(b1); | ||
161 | fprintf(fp, "master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1)); | ||
162 | } | ||
163 | #endif | ||
164 | if (filter.showqueue) | ||
165 | print_queuelen((char*)RTA_DATA(tb[IFLA_IFNAME])); | ||
166 | |||
167 | if (!filter.family || filter.family == AF_PACKET) { | ||
168 | SPRINT_BUF(b1); | ||
169 | fprintf(fp, "%s", _SL_); | ||
170 | fprintf(fp, " link/%s ", ll_type_n2a(ifi->ifi_type, b1, sizeof(b1))); | ||
171 | |||
172 | if (tb[IFLA_ADDRESS]) { | ||
173 | fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]), | ||
174 | RTA_PAYLOAD(tb[IFLA_ADDRESS]), | ||
175 | ifi->ifi_type, | ||
176 | b1, sizeof(b1))); | ||
177 | } | ||
178 | if (tb[IFLA_BROADCAST]) { | ||
179 | if (ifi->ifi_flags&IFF_POINTOPOINT) | ||
180 | fprintf(fp, " peer "); | ||
181 | else | ||
182 | fprintf(fp, " brd "); | ||
183 | fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]), | ||
184 | RTA_PAYLOAD(tb[IFLA_BROADCAST]), | ||
185 | ifi->ifi_type, | ||
186 | b1, sizeof(b1))); | ||
187 | } | ||
188 | } | ||
189 | fprintf(fp, "\n"); | ||
190 | fflush(fp); | ||
191 | return 0; | ||
192 | } | ||
193 | |||
194 | static int flush_update(void) | ||
195 | { | ||
196 | if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) { | ||
197 | perror("Failed to send flush request\n"); | ||
198 | return -1; | ||
199 | } | ||
200 | filter.flushp = 0; | ||
201 | return 0; | ||
202 | } | ||
203 | |||
204 | static int print_addrinfo(struct sockaddr_nl ATTRIBUTE_UNUSED *who, | ||
205 | struct nlmsghdr *n, void ATTRIBUTE_UNUSED *arg) | ||
206 | { | ||
207 | FILE *fp = (FILE*)arg; | ||
208 | struct ifaddrmsg *ifa = NLMSG_DATA(n); | ||
209 | int len = n->nlmsg_len; | ||
210 | struct rtattr * rta_tb[IFA_MAX+1]; | ||
211 | char abuf[256]; | ||
212 | SPRINT_BUF(b1); | ||
213 | |||
214 | if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR) | ||
215 | return 0; | ||
216 | len -= NLMSG_LENGTH(sizeof(*ifa)); | ||
217 | if (len < 0) { | ||
218 | bb_error_msg("wrong nlmsg len %d", len); | ||
219 | return -1; | ||
220 | } | ||
221 | |||
222 | if (filter.flushb && n->nlmsg_type != RTM_NEWADDR) | ||
223 | return 0; | ||
224 | |||
225 | memset(rta_tb, 0, sizeof(rta_tb)); | ||
226 | parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa))); | ||
227 | |||
228 | if (!rta_tb[IFA_LOCAL]) | ||
229 | rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS]; | ||
230 | if (!rta_tb[IFA_ADDRESS]) | ||
231 | rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL]; | ||
232 | |||
233 | if (filter.ifindex && filter.ifindex != ifa->ifa_index) | ||
234 | return 0; | ||
235 | if ((filter.scope^ifa->ifa_scope)&filter.scopemask) | ||
236 | return 0; | ||
237 | if ((filter.flags^ifa->ifa_flags)&filter.flagmask) | ||
238 | return 0; | ||
239 | if (filter.label) { | ||
240 | const char *label; | ||
241 | if (rta_tb[IFA_LABEL]) | ||
242 | label = RTA_DATA(rta_tb[IFA_LABEL]); | ||
243 | else | ||
244 | label = ll_idx_n2a(ifa->ifa_index, b1); | ||
245 | if (fnmatch(filter.label, label, 0) != 0) | ||
246 | return 0; | ||
247 | } | ||
248 | if (filter.pfx.family) { | ||
249 | if (rta_tb[IFA_LOCAL]) { | ||
250 | inet_prefix dst; | ||
251 | memset(&dst, 0, sizeof(dst)); | ||
252 | dst.family = ifa->ifa_family; | ||
253 | memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL])); | ||
254 | if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen)) | ||
255 | return 0; | ||
256 | } | ||
257 | } | ||
258 | |||
259 | if (filter.flushb) { | ||
260 | struct nlmsghdr *fn; | ||
261 | if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) { | ||
262 | if (flush_update()) | ||
263 | return -1; | ||
264 | } | ||
265 | fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp)); | ||
266 | memcpy(fn, n, n->nlmsg_len); | ||
267 | fn->nlmsg_type = RTM_DELADDR; | ||
268 | fn->nlmsg_flags = NLM_F_REQUEST; | ||
269 | fn->nlmsg_seq = ++filter.rth->seq; | ||
270 | filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb; | ||
271 | filter.flushed++; | ||
272 | return 0; | ||
273 | } | ||
274 | |||
275 | if (n->nlmsg_type == RTM_DELADDR) | ||
276 | fprintf(fp, "Deleted "); | ||
277 | |||
278 | if (filter.oneline) | ||
279 | fprintf(fp, "%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index)); | ||
280 | if (ifa->ifa_family == AF_INET) | ||
281 | fprintf(fp, " inet "); | ||
282 | else if (ifa->ifa_family == AF_INET6) | ||
283 | fprintf(fp, " inet6 "); | ||
284 | else | ||
285 | fprintf(fp, " family %d ", ifa->ifa_family); | ||
286 | |||
287 | if (rta_tb[IFA_LOCAL]) { | ||
288 | fprintf(fp, "%s", rt_addr_n2a(ifa->ifa_family, | ||
289 | RTA_PAYLOAD(rta_tb[IFA_LOCAL]), | ||
290 | RTA_DATA(rta_tb[IFA_LOCAL]), | ||
291 | abuf, sizeof(abuf))); | ||
292 | |||
293 | if (rta_tb[IFA_ADDRESS] == NULL || | ||
294 | memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]), 4) == 0) { | ||
295 | fprintf(fp, "/%d ", ifa->ifa_prefixlen); | ||
296 | } else { | ||
297 | fprintf(fp, " peer %s/%d ", | ||
298 | rt_addr_n2a(ifa->ifa_family, | ||
299 | RTA_PAYLOAD(rta_tb[IFA_ADDRESS]), | ||
300 | RTA_DATA(rta_tb[IFA_ADDRESS]), | ||
301 | abuf, sizeof(abuf)), | ||
302 | ifa->ifa_prefixlen); | ||
303 | } | ||
304 | } | ||
305 | |||
306 | if (rta_tb[IFA_BROADCAST]) { | ||
307 | fprintf(fp, "brd %s ", | ||
308 | rt_addr_n2a(ifa->ifa_family, | ||
309 | RTA_PAYLOAD(rta_tb[IFA_BROADCAST]), | ||
310 | RTA_DATA(rta_tb[IFA_BROADCAST]), | ||
311 | abuf, sizeof(abuf))); | ||
312 | } | ||
313 | if (rta_tb[IFA_ANYCAST]) { | ||
314 | fprintf(fp, "any %s ", | ||
315 | rt_addr_n2a(ifa->ifa_family, | ||
316 | RTA_PAYLOAD(rta_tb[IFA_ANYCAST]), | ||
317 | RTA_DATA(rta_tb[IFA_ANYCAST]), | ||
318 | abuf, sizeof(abuf))); | ||
319 | } | ||
320 | fprintf(fp, "scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1, sizeof(b1))); | ||
321 | if (ifa->ifa_flags&IFA_F_SECONDARY) { | ||
322 | ifa->ifa_flags &= ~IFA_F_SECONDARY; | ||
323 | fprintf(fp, "secondary "); | ||
324 | } | ||
325 | if (ifa->ifa_flags&IFA_F_TENTATIVE) { | ||
326 | ifa->ifa_flags &= ~IFA_F_TENTATIVE; | ||
327 | fprintf(fp, "tentative "); | ||
328 | } | ||
329 | if (ifa->ifa_flags&IFA_F_DEPRECATED) { | ||
330 | ifa->ifa_flags &= ~IFA_F_DEPRECATED; | ||
331 | fprintf(fp, "deprecated "); | ||
332 | } | ||
333 | if (!(ifa->ifa_flags&IFA_F_PERMANENT)) { | ||
334 | fprintf(fp, "dynamic "); | ||
335 | } else | ||
336 | ifa->ifa_flags &= ~IFA_F_PERMANENT; | ||
337 | if (ifa->ifa_flags) | ||
338 | fprintf(fp, "flags %02x ", ifa->ifa_flags); | ||
339 | if (rta_tb[IFA_LABEL]) | ||
340 | fprintf(fp, "%s", (char*)RTA_DATA(rta_tb[IFA_LABEL])); | ||
341 | if (rta_tb[IFA_CACHEINFO]) { | ||
342 | struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]); | ||
343 | char buf[128]; | ||
344 | fprintf(fp, "%s", _SL_); | ||
345 | if (ci->ifa_valid == 0xFFFFFFFFU) | ||
346 | sprintf(buf, "valid_lft forever"); | ||
347 | else | ||
348 | sprintf(buf, "valid_lft %dsec", ci->ifa_valid); | ||
349 | if (ci->ifa_prefered == 0xFFFFFFFFU) | ||
350 | sprintf(buf+strlen(buf), " preferred_lft forever"); | ||
351 | else | ||
352 | sprintf(buf+strlen(buf), " preferred_lft %dsec", ci->ifa_prefered); | ||
353 | fprintf(fp, " %s", buf); | ||
354 | } | ||
355 | fprintf(fp, "\n"); | ||
356 | fflush(fp); | ||
357 | return 0; | ||
358 | } | ||
359 | |||
360 | |||
361 | struct nlmsg_list | ||
362 | { | ||
363 | struct nlmsg_list *next; | ||
364 | struct nlmsghdr h; | ||
365 | }; | ||
366 | |||
367 | static int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo, FILE *fp) | ||
368 | { | ||
369 | for ( ;ainfo ; ainfo = ainfo->next) { | ||
370 | struct nlmsghdr *n = &ainfo->h; | ||
371 | struct ifaddrmsg *ifa = NLMSG_DATA(n); | ||
372 | |||
373 | if (n->nlmsg_type != RTM_NEWADDR) | ||
374 | continue; | ||
375 | |||
376 | if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifa))) | ||
377 | return -1; | ||
378 | |||
379 | if (ifa->ifa_index != ifindex || | ||
380 | (filter.family && filter.family != ifa->ifa_family)) | ||
381 | continue; | ||
382 | |||
383 | print_addrinfo(NULL, n, fp); | ||
384 | } | ||
385 | return 0; | ||
386 | } | ||
387 | |||
388 | |||
389 | static int store_nlmsg(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg) | ||
390 | { | ||
391 | struct nlmsg_list **linfo = (struct nlmsg_list**)arg; | ||
392 | struct nlmsg_list *h; | ||
393 | struct nlmsg_list **lp; | ||
394 | |||
395 | h = malloc(n->nlmsg_len+sizeof(void*)); | ||
396 | if (h == NULL) | ||
397 | return -1; | ||
398 | |||
399 | memcpy(&h->h, n, n->nlmsg_len); | ||
400 | h->next = NULL; | ||
401 | |||
402 | for (lp = linfo; *lp; lp = &(*lp)->next) /* NOTHING */; | ||
403 | *lp = h; | ||
404 | |||
405 | ll_remember_index(who, n, NULL); | ||
406 | return 0; | ||
407 | } | ||
408 | |||
409 | static void ipaddr_reset_filter(int _oneline) | ||
410 | { | ||
411 | memset(&filter, 0, sizeof(filter)); | ||
412 | filter.oneline = _oneline; | ||
413 | } | ||
414 | |||
415 | int ipaddr_list_or_flush(int argc, char **argv, int flush) | ||
416 | { | ||
417 | static const char *const option[] = { "to", "scope", "up", "label", "dev", 0 }; | ||
418 | |||
419 | struct nlmsg_list *linfo = NULL; | ||
420 | struct nlmsg_list *ainfo = NULL; | ||
421 | struct nlmsg_list *l; | ||
422 | struct rtnl_handle rth; | ||
423 | char *filter_dev = NULL; | ||
424 | int no_link = 0; | ||
425 | |||
426 | ipaddr_reset_filter(oneline); | ||
427 | filter.showqueue = 1; | ||
428 | |||
429 | if (filter.family == AF_UNSPEC) | ||
430 | filter.family = preferred_family; | ||
431 | |||
432 | if (flush) { | ||
433 | if (argc <= 0) { | ||
434 | bb_error_msg(bb_msg_requires_arg, "flush"); | ||
435 | return -1; | ||
436 | } | ||
437 | if (filter.family == AF_PACKET) { | ||
438 | bb_error_msg("cannot flush link addresses"); | ||
439 | return -1; | ||
440 | } | ||
441 | } | ||
442 | |||
443 | while (argc > 0) { | ||
444 | const int option_num = index_in_str_array(option, *argv); | ||
445 | switch (option_num) { | ||
446 | case 0: /* to */ | ||
447 | NEXT_ARG(); | ||
448 | get_prefix(&filter.pfx, *argv, filter.family); | ||
449 | if (filter.family == AF_UNSPEC) { | ||
450 | filter.family = filter.pfx.family; | ||
451 | } | ||
452 | break; | ||
453 | case 1: /* scope */ | ||
454 | { | ||
455 | uint32_t scope = 0; | ||
456 | NEXT_ARG(); | ||
457 | filter.scopemask = -1; | ||
458 | if (rtnl_rtscope_a2n(&scope, *argv)) { | ||
459 | if (strcmp(*argv, "all") != 0) { | ||
460 | invarg(*argv, "scope"); | ||
461 | } | ||
462 | scope = RT_SCOPE_NOWHERE; | ||
463 | filter.scopemask = 0; | ||
464 | } | ||
465 | filter.scope = scope; | ||
466 | break; | ||
467 | } | ||
468 | case 2: /* up */ | ||
469 | filter.up = 1; | ||
470 | break; | ||
471 | case 3: /* label */ | ||
472 | NEXT_ARG(); | ||
473 | filter.label = *argv; | ||
474 | break; | ||
475 | case 4: /* dev */ | ||
476 | NEXT_ARG(); | ||
477 | default: | ||
478 | if (filter_dev) { | ||
479 | duparg2("dev", *argv); | ||
480 | } | ||
481 | filter_dev = *argv; | ||
482 | } | ||
483 | argv++; | ||
484 | argc--; | ||
485 | } | ||
486 | |||
487 | if (rtnl_open(&rth, 0) < 0) | ||
488 | exit(1); | ||
489 | |||
490 | if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK) < 0) { | ||
491 | bb_perror_msg_and_die("cannot send dump request"); | ||
492 | } | ||
493 | |||
494 | if (rtnl_dump_filter(&rth, store_nlmsg, &linfo, NULL, NULL) < 0) { | ||
495 | bb_error_msg_and_die("dump terminated"); | ||
496 | } | ||
497 | |||
498 | if (filter_dev) { | ||
499 | filter.ifindex = ll_name_to_index(filter_dev); | ||
500 | if (filter.ifindex <= 0) { | ||
501 | bb_error_msg("device \"%s\" does not exist", filter_dev); | ||
502 | return -1; | ||
503 | } | ||
504 | } | ||
505 | |||
506 | if (flush) { | ||
507 | char flushb[4096-512]; | ||
508 | |||
509 | filter.flushb = flushb; | ||
510 | filter.flushp = 0; | ||
511 | filter.flushe = sizeof(flushb); | ||
512 | filter.rth = &rth; | ||
513 | |||
514 | for (;;) { | ||
515 | if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) { | ||
516 | perror("Cannot send dump request"); | ||
517 | exit(1); | ||
518 | } | ||
519 | filter.flushed = 0; | ||
520 | if (rtnl_dump_filter(&rth, print_addrinfo, stdout, NULL, NULL) < 0) { | ||
521 | fprintf(stderr, "Flush terminated\n"); | ||
522 | exit(1); | ||
523 | } | ||
524 | if (filter.flushed == 0) { | ||
525 | fflush(stdout); | ||
526 | return 0; | ||
527 | } | ||
528 | if (flush_update() < 0) | ||
529 | exit(1); | ||
530 | } | ||
531 | } | ||
532 | |||
533 | if (filter.family != AF_PACKET) { | ||
534 | if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) { | ||
535 | bb_perror_msg_and_die("cannot send dump request"); | ||
536 | } | ||
537 | |||
538 | if (rtnl_dump_filter(&rth, store_nlmsg, &ainfo, NULL, NULL) < 0) { | ||
539 | bb_error_msg_and_die("dump terminated"); | ||
540 | } | ||
541 | } | ||
542 | |||
543 | |||
544 | if (filter.family && filter.family != AF_PACKET) { | ||
545 | struct nlmsg_list **lp; | ||
546 | lp=&linfo; | ||
547 | |||
548 | if (filter.oneline) | ||
549 | no_link = 1; | ||
550 | |||
551 | while ((l=*lp)!=NULL) { | ||
552 | int ok = 0; | ||
553 | struct ifinfomsg *ifi = NLMSG_DATA(&l->h); | ||
554 | struct nlmsg_list *a; | ||
555 | |||
556 | for (a=ainfo; a; a=a->next) { | ||
557 | struct nlmsghdr *n = &a->h; | ||
558 | struct ifaddrmsg *ifa = NLMSG_DATA(n); | ||
559 | |||
560 | if (ifa->ifa_index != ifi->ifi_index || | ||
561 | (filter.family && filter.family != ifa->ifa_family)) | ||
562 | continue; | ||
563 | if ((filter.scope^ifa->ifa_scope)&filter.scopemask) | ||
564 | continue; | ||
565 | if ((filter.flags^ifa->ifa_flags)&filter.flagmask) | ||
566 | continue; | ||
567 | if (filter.pfx.family || filter.label) { | ||
568 | struct rtattr *tb[IFA_MAX+1]; | ||
569 | memset(tb, 0, sizeof(tb)); | ||
570 | parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n)); | ||
571 | if (!tb[IFA_LOCAL]) | ||
572 | tb[IFA_LOCAL] = tb[IFA_ADDRESS]; | ||
573 | |||
574 | if (filter.pfx.family && tb[IFA_LOCAL]) { | ||
575 | inet_prefix dst; | ||
576 | memset(&dst, 0, sizeof(dst)); | ||
577 | dst.family = ifa->ifa_family; | ||
578 | memcpy(&dst.data, RTA_DATA(tb[IFA_LOCAL]), RTA_PAYLOAD(tb[IFA_LOCAL])); | ||
579 | if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen)) | ||
580 | continue; | ||
581 | } | ||
582 | if (filter.label) { | ||
583 | SPRINT_BUF(b1); | ||
584 | const char *label; | ||
585 | if (tb[IFA_LABEL]) | ||
586 | label = RTA_DATA(tb[IFA_LABEL]); | ||
587 | else | ||
588 | label = ll_idx_n2a(ifa->ifa_index, b1); | ||
589 | if (fnmatch(filter.label, label, 0) != 0) | ||
590 | continue; | ||
591 | } | ||
592 | } | ||
593 | |||
594 | ok = 1; | ||
595 | break; | ||
596 | } | ||
597 | if (!ok) | ||
598 | *lp = l->next; | ||
599 | else | ||
600 | lp = &l->next; | ||
601 | } | ||
602 | } | ||
603 | |||
604 | for (l=linfo; l; l = l->next) { | ||
605 | if (no_link || print_linkinfo(NULL, &l->h, stdout) == 0) { | ||
606 | struct ifinfomsg *ifi = NLMSG_DATA(&l->h); | ||
607 | if (filter.family != AF_PACKET) | ||
608 | print_selected_addrinfo(ifi->ifi_index, ainfo, stdout); | ||
609 | } | ||
610 | fflush(stdout); | ||
611 | } | ||
612 | |||
613 | exit(0); | ||
614 | } | ||
615 | |||
616 | static int default_scope(inet_prefix *lcl) | ||
617 | { | ||
618 | if (lcl->family == AF_INET) { | ||
619 | if (lcl->bytelen >= 1 && *(__u8*)&lcl->data == 127) | ||
620 | return RT_SCOPE_HOST; | ||
621 | } | ||
622 | return 0; | ||
623 | } | ||
624 | |||
625 | static int ipaddr_modify(int cmd, int argc, char **argv) | ||
626 | { | ||
627 | static const char *const option[] = { | ||
628 | "peer", "remote", "broadcast", "brd", | ||
629 | "anycast", "scope", "dev", "label", "local", 0 | ||
630 | }; | ||
631 | |||
632 | struct rtnl_handle rth; | ||
633 | struct { | ||
634 | struct nlmsghdr n; | ||
635 | struct ifaddrmsg ifa; | ||
636 | char buf[256]; | ||
637 | } req; | ||
638 | char *d = NULL; | ||
639 | char *l = NULL; | ||
640 | inet_prefix lcl; | ||
641 | inet_prefix peer; | ||
642 | int local_len = 0; | ||
643 | int peer_len = 0; | ||
644 | int brd_len = 0; | ||
645 | int any_len = 0; | ||
646 | int scoped = 0; | ||
647 | |||
648 | memset(&req, 0, sizeof(req)); | ||
649 | |||
650 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg)); | ||
651 | req.n.nlmsg_flags = NLM_F_REQUEST; | ||
652 | req.n.nlmsg_type = cmd; | ||
653 | req.ifa.ifa_family = preferred_family; | ||
654 | |||
655 | while (argc > 0) { | ||
656 | const int option_num = index_in_str_array(option, *argv); | ||
657 | switch (option_num) { | ||
658 | case 0: /* peer */ | ||
659 | case 1: /* remote */ | ||
660 | NEXT_ARG(); | ||
661 | |||
662 | if (peer_len) { | ||
663 | duparg("peer", *argv); | ||
664 | } | ||
665 | get_prefix(&peer, *argv, req.ifa.ifa_family); | ||
666 | peer_len = peer.bytelen; | ||
667 | if (req.ifa.ifa_family == AF_UNSPEC) { | ||
668 | req.ifa.ifa_family = peer.family; | ||
669 | } | ||
670 | addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen); | ||
671 | req.ifa.ifa_prefixlen = peer.bitlen; | ||
672 | break; | ||
673 | case 2: /* broadcast */ | ||
674 | case 3: /* brd */ | ||
675 | { | ||
676 | inet_prefix addr; | ||
677 | NEXT_ARG(); | ||
678 | if (brd_len) { | ||
679 | duparg("broadcast", *argv); | ||
680 | } | ||
681 | if (strcmp(*argv, "+") == 0) { | ||
682 | brd_len = -1; | ||
683 | } | ||
684 | else if (strcmp(*argv, "-") == 0) { | ||
685 | brd_len = -2; | ||
686 | } else { | ||
687 | get_addr(&addr, *argv, req.ifa.ifa_family); | ||
688 | if (req.ifa.ifa_family == AF_UNSPEC) | ||
689 | req.ifa.ifa_family = addr.family; | ||
690 | addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen); | ||
691 | brd_len = addr.bytelen; | ||
692 | } | ||
693 | break; | ||
694 | } | ||
695 | case 4: /* anycast */ | ||
696 | { | ||
697 | inet_prefix addr; | ||
698 | NEXT_ARG(); | ||
699 | if (any_len) { | ||
700 | duparg("anycast", *argv); | ||
701 | } | ||
702 | get_addr(&addr, *argv, req.ifa.ifa_family); | ||
703 | if (req.ifa.ifa_family == AF_UNSPEC) { | ||
704 | req.ifa.ifa_family = addr.family; | ||
705 | } | ||
706 | addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen); | ||
707 | any_len = addr.bytelen; | ||
708 | break; | ||
709 | } | ||
710 | case 5: /* scope */ | ||
711 | { | ||
712 | uint32_t scope = 0; | ||
713 | NEXT_ARG(); | ||
714 | if (rtnl_rtscope_a2n(&scope, *argv)) { | ||
715 | invarg(*argv, "scope"); | ||
716 | } | ||
717 | req.ifa.ifa_scope = scope; | ||
718 | scoped = 1; | ||
719 | break; | ||
720 | } | ||
721 | case 6: /* dev */ | ||
722 | NEXT_ARG(); | ||
723 | d = *argv; | ||
724 | break; | ||
725 | case 7: /* label */ | ||
726 | NEXT_ARG(); | ||
727 | l = *argv; | ||
728 | addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l)+1); | ||
729 | break; | ||
730 | case 8: /* local */ | ||
731 | NEXT_ARG(); | ||
732 | default: | ||
733 | if (local_len) { | ||
734 | duparg2("local", *argv); | ||
735 | } | ||
736 | get_prefix(&lcl, *argv, req.ifa.ifa_family); | ||
737 | if (req.ifa.ifa_family == AF_UNSPEC) { | ||
738 | req.ifa.ifa_family = lcl.family; | ||
739 | } | ||
740 | addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen); | ||
741 | local_len = lcl.bytelen; | ||
742 | } | ||
743 | argc--; | ||
744 | argv++; | ||
745 | } | ||
746 | |||
747 | if (d == NULL) { | ||
748 | bb_error_msg(bb_msg_requires_arg,"\"dev\""); | ||
749 | return -1; | ||
750 | } | ||
751 | if (l && matches(d, l) != 0) { | ||
752 | bb_error_msg_and_die("\"dev\" (%s) must match \"label\" (%s)", d, l); | ||
753 | } | ||
754 | |||
755 | if (peer_len == 0 && local_len && cmd != RTM_DELADDR) { | ||
756 | peer = lcl; | ||
757 | addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen); | ||
758 | } | ||
759 | if (req.ifa.ifa_prefixlen == 0) | ||
760 | req.ifa.ifa_prefixlen = lcl.bitlen; | ||
761 | |||
762 | if (brd_len < 0 && cmd != RTM_DELADDR) { | ||
763 | inet_prefix brd; | ||
764 | int i; | ||
765 | if (req.ifa.ifa_family != AF_INET) { | ||
766 | bb_error_msg("broadcast can be set only for IPv4 addresses"); | ||
767 | return -1; | ||
768 | } | ||
769 | brd = peer; | ||
770 | if (brd.bitlen <= 30) { | ||
771 | for (i=31; i>=brd.bitlen; i--) { | ||
772 | if (brd_len == -1) | ||
773 | brd.data[0] |= htonl(1<<(31-i)); | ||
774 | else | ||
775 | brd.data[0] &= ~htonl(1<<(31-i)); | ||
776 | } | ||
777 | addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen); | ||
778 | brd_len = brd.bytelen; | ||
779 | } | ||
780 | } | ||
781 | if (!scoped && cmd != RTM_DELADDR) | ||
782 | req.ifa.ifa_scope = default_scope(&lcl); | ||
783 | |||
784 | if (rtnl_open(&rth, 0) < 0) | ||
785 | exit(1); | ||
786 | |||
787 | ll_init_map(&rth); | ||
788 | |||
789 | if ((req.ifa.ifa_index = ll_name_to_index(d)) == 0) { | ||
790 | bb_error_msg("cannot find device \"%s\"", d); | ||
791 | return -1; | ||
792 | } | ||
793 | |||
794 | if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0) | ||
795 | exit(2); | ||
796 | |||
797 | exit(0); | ||
798 | } | ||
799 | |||
800 | int do_ipaddr(int argc, char **argv) | ||
801 | { | ||
802 | static const char *const commands[] = { | ||
803 | "add", "delete", "list", "show", "lst", "flush", 0 | ||
804 | }; | ||
805 | |||
806 | int command_num = 2; | ||
807 | |||
808 | if (*argv) { | ||
809 | command_num = index_in_substr_array(commands, *argv); | ||
810 | } | ||
811 | switch (command_num) { | ||
812 | case 0: /* add */ | ||
813 | return ipaddr_modify(RTM_NEWADDR, argc-1, argv+1); | ||
814 | case 1: /* delete */ | ||
815 | return ipaddr_modify(RTM_DELADDR, argc-1, argv+1); | ||
816 | case 2: /* list */ | ||
817 | case 3: /* show */ | ||
818 | case 4: /* lst */ | ||
819 | return ipaddr_list_or_flush(argc-1, argv+1, 0); | ||
820 | case 5: /* flush */ | ||
821 | return ipaddr_list_or_flush(argc-1, argv+1, 1); | ||
822 | } | ||
823 | bb_error_msg_and_die("unknown command %s", *argv); | ||
824 | } | ||