Annotation of /trunk/mkinitrd-magellan/busybox/networking/libiproute/ipaddress.c
Parent Directory | Revision Log
Revision 984 -
(hide annotations)
(download)
Sun May 30 11:32:42 2010 UTC (14 years ago) by niro
File MIME type: text/plain
File size: 18840 byte(s)
Sun May 30 11:32:42 2010 UTC (14 years ago) by niro
File MIME type: text/plain
File size: 18840 byte(s)
-updated to busybox-1.16.1 and enabled blkid/uuid support in default config
1 | niro | 532 | /* 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 <fnmatch.h> | ||
14 | #include <net/if.h> | ||
15 | #include <net/if_arp.h> | ||
16 | |||
17 | niro | 816 | #include "ip_common.h" /* #include "libbb.h" is inside */ |
18 | niro | 532 | #include "rt_names.h" |
19 | #include "utils.h" | ||
20 | |||
21 | niro | 816 | #ifndef IFF_LOWER_UP |
22 | /* from linux/if.h */ | ||
23 | #define IFF_LOWER_UP 0x10000 /* driver signals L1 up*/ | ||
24 | #endif | ||
25 | niro | 532 | |
26 | niro | 816 | typedef struct filter_t { |
27 | char *label; | ||
28 | char *flushb; | ||
29 | struct rtnl_handle *rth; | ||
30 | niro | 532 | int scope, scopemask; |
31 | int flags, flagmask; | ||
32 | int flushp; | ||
33 | int flushe; | ||
34 | niro | 816 | 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 | niro | 532 | |
43 | niro | 816 | #define filter (*(filter_t*)&bb_common_bufsiz1) |
44 | |||
45 | |||
46 | static void print_link_flags(unsigned flags, unsigned mdown) | ||
47 | niro | 532 | { |
48 | niro | 816 | 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 | niro | 532 | 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 | niro | 816 | flags = print_flags_separated(flag_masks, flag_labels, flags, ","); |
69 | niro | 532 | if (flags) |
70 | niro | 816 | printf("%x", flags); |
71 | niro | 532 | if (mdown) |
72 | niro | 816 | printf(",M-DOWN"); |
73 | printf("> "); | ||
74 | niro | 532 | } |
75 | |||
76 | static 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 | niro | 984 | strncpy_IFNAMSIZ(ifr.ifr_name, name); |
87 | niro | 816 | if (ioctl_or_warn(s, SIOCGIFTXQLEN, &ifr) < 0) { |
88 | niro | 532 | close(s); |
89 | return; | ||
90 | } | ||
91 | close(s); | ||
92 | |||
93 | if (ifr.ifr_qlen) | ||
94 | printf("qlen %d", ifr.ifr_qlen); | ||
95 | } | ||
96 | |||
97 | niro | 984 | static NOINLINE int print_linkinfo(const struct nlmsghdr *n) |
98 | niro | 532 | { |
99 | struct ifinfomsg *ifi = NLMSG_DATA(n); | ||
100 | niro | 984 | struct rtattr *tb[IFLA_MAX+1]; |
101 | niro | 532 | int len = n->nlmsg_len; |
102 | |||
103 | if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK) | ||
104 | return 0; | ||
105 | |||
106 | len -= NLMSG_LENGTH(sizeof(*ifi)); | ||
107 | if (len < 0) | ||
108 | return -1; | ||
109 | |||
110 | if (filter.ifindex && ifi->ifi_index != filter.ifindex) | ||
111 | return 0; | ||
112 | niro | 816 | if (filter.up && !(ifi->ifi_flags & IFF_UP)) |
113 | niro | 532 | return 0; |
114 | |||
115 | memset(tb, 0, sizeof(tb)); | ||
116 | parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); | ||
117 | if (tb[IFLA_IFNAME] == NULL) { | ||
118 | bb_error_msg("nil ifname"); | ||
119 | return -1; | ||
120 | } | ||
121 | niro | 816 | if (filter.label |
122 | && (!filter.family || filter.family == AF_PACKET) | ||
123 | && fnmatch(filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0) | ||
124 | ) { | ||
125 | niro | 532 | return 0; |
126 | niro | 816 | } |
127 | niro | 532 | |
128 | if (n->nlmsg_type == RTM_DELLINK) | ||
129 | niro | 816 | printf("Deleted "); |
130 | niro | 532 | |
131 | niro | 816 | printf("%d: %s", ifi->ifi_index, |
132 | niro | 984 | /*tb[IFLA_IFNAME] ? (char*)RTA_DATA(tb[IFLA_IFNAME]) : "<nil>" - we checked tb[IFLA_IFNAME] above*/ |
133 | (char*)RTA_DATA(tb[IFLA_IFNAME]) | ||
134 | ); | ||
135 | niro | 532 | |
136 | niro | 984 | { |
137 | unsigned m_flag = 0; | ||
138 | if (tb[IFLA_LINK]) { | ||
139 | SPRINT_BUF(b1); | ||
140 | int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]); | ||
141 | if (iflink == 0) | ||
142 | printf("@NONE: "); | ||
143 | else { | ||
144 | printf("@%s: ", ll_idx_n2a(iflink, b1)); | ||
145 | m_flag = ll_index_to_flags(iflink); | ||
146 | m_flag = !(m_flag & IFF_UP); | ||
147 | } | ||
148 | } else { | ||
149 | printf(": "); | ||
150 | niro | 532 | } |
151 | niro | 984 | print_link_flags(ifi->ifi_flags, m_flag); |
152 | niro | 532 | } |
153 | |||
154 | if (tb[IFLA_MTU]) | ||
155 | niro | 816 | printf("mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU])); |
156 | niro | 532 | if (tb[IFLA_QDISC]) |
157 | niro | 816 | printf("qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC])); |
158 | niro | 532 | #ifdef IFLA_MASTER |
159 | if (tb[IFLA_MASTER]) { | ||
160 | SPRINT_BUF(b1); | ||
161 | niro | 816 | printf("master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1)); |
162 | niro | 532 | } |
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 | niro | 984 | printf("%c link/%s ", _SL_, ll_type_n2a(ifi->ifi_type, b1)); |
170 | niro | 532 | |
171 | if (tb[IFLA_ADDRESS]) { | ||
172 | niro | 816 | fputs(ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]), |
173 | niro | 532 | RTA_PAYLOAD(tb[IFLA_ADDRESS]), |
174 | ifi->ifi_type, | ||
175 | niro | 816 | b1, sizeof(b1)), stdout); |
176 | niro | 532 | } |
177 | if (tb[IFLA_BROADCAST]) { | ||
178 | niro | 816 | if (ifi->ifi_flags & IFF_POINTOPOINT) |
179 | printf(" peer "); | ||
180 | niro | 532 | else |
181 | niro | 816 | printf(" brd "); |
182 | fputs(ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]), | ||
183 | niro | 532 | RTA_PAYLOAD(tb[IFLA_BROADCAST]), |
184 | ifi->ifi_type, | ||
185 | niro | 816 | b1, sizeof(b1)), stdout); |
186 | niro | 532 | } |
187 | } | ||
188 | niro | 816 | bb_putchar('\n'); |
189 | niro | 984 | /*fflush_all();*/ |
190 | niro | 532 | return 0; |
191 | } | ||
192 | |||
193 | static int flush_update(void) | ||
194 | { | ||
195 | if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) { | ||
196 | niro | 816 | bb_perror_msg("failed to send flush request"); |
197 | niro | 532 | return -1; |
198 | } | ||
199 | filter.flushp = 0; | ||
200 | return 0; | ||
201 | } | ||
202 | |||
203 | niro | 984 | static int FAST_FUNC print_addrinfo(const struct sockaddr_nl *who UNUSED_PARAM, |
204 | niro | 816 | struct nlmsghdr *n, void *arg UNUSED_PARAM) |
205 | niro | 532 | { |
206 | struct ifaddrmsg *ifa = NLMSG_DATA(n); | ||
207 | int len = n->nlmsg_len; | ||
208 | struct rtattr * rta_tb[IFA_MAX+1]; | ||
209 | char abuf[256]; | ||
210 | SPRINT_BUF(b1); | ||
211 | |||
212 | if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR) | ||
213 | return 0; | ||
214 | len -= NLMSG_LENGTH(sizeof(*ifa)); | ||
215 | if (len < 0) { | ||
216 | bb_error_msg("wrong nlmsg len %d", len); | ||
217 | return -1; | ||
218 | } | ||
219 | |||
220 | if (filter.flushb && n->nlmsg_type != RTM_NEWADDR) | ||
221 | return 0; | ||
222 | |||
223 | memset(rta_tb, 0, sizeof(rta_tb)); | ||
224 | parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa))); | ||
225 | |||
226 | if (!rta_tb[IFA_LOCAL]) | ||
227 | rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS]; | ||
228 | if (!rta_tb[IFA_ADDRESS]) | ||
229 | rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL]; | ||
230 | |||
231 | if (filter.ifindex && filter.ifindex != ifa->ifa_index) | ||
232 | return 0; | ||
233 | niro | 816 | if ((filter.scope ^ ifa->ifa_scope) & filter.scopemask) |
234 | niro | 532 | return 0; |
235 | niro | 816 | if ((filter.flags ^ ifa->ifa_flags) & filter.flagmask) |
236 | niro | 532 | return 0; |
237 | if (filter.label) { | ||
238 | const char *label; | ||
239 | if (rta_tb[IFA_LABEL]) | ||
240 | label = RTA_DATA(rta_tb[IFA_LABEL]); | ||
241 | else | ||
242 | label = ll_idx_n2a(ifa->ifa_index, b1); | ||
243 | if (fnmatch(filter.label, label, 0) != 0) | ||
244 | return 0; | ||
245 | } | ||
246 | if (filter.pfx.family) { | ||
247 | if (rta_tb[IFA_LOCAL]) { | ||
248 | inet_prefix dst; | ||
249 | memset(&dst, 0, sizeof(dst)); | ||
250 | dst.family = ifa->ifa_family; | ||
251 | memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL])); | ||
252 | if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen)) | ||
253 | return 0; | ||
254 | } | ||
255 | } | ||
256 | |||
257 | if (filter.flushb) { | ||
258 | struct nlmsghdr *fn; | ||
259 | if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) { | ||
260 | if (flush_update()) | ||
261 | return -1; | ||
262 | } | ||
263 | fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp)); | ||
264 | memcpy(fn, n, n->nlmsg_len); | ||
265 | fn->nlmsg_type = RTM_DELADDR; | ||
266 | fn->nlmsg_flags = NLM_F_REQUEST; | ||
267 | fn->nlmsg_seq = ++filter.rth->seq; | ||
268 | filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb; | ||
269 | niro | 816 | filter.flushed = 1; |
270 | niro | 532 | return 0; |
271 | } | ||
272 | |||
273 | if (n->nlmsg_type == RTM_DELADDR) | ||
274 | niro | 816 | printf("Deleted "); |
275 | niro | 532 | |
276 | if (filter.oneline) | ||
277 | niro | 816 | printf("%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index)); |
278 | niro | 532 | if (ifa->ifa_family == AF_INET) |
279 | niro | 816 | printf(" inet "); |
280 | niro | 532 | else if (ifa->ifa_family == AF_INET6) |
281 | niro | 816 | printf(" inet6 "); |
282 | niro | 532 | else |
283 | niro | 816 | printf(" family %d ", ifa->ifa_family); |
284 | niro | 532 | |
285 | if (rta_tb[IFA_LOCAL]) { | ||
286 | niro | 816 | fputs(rt_addr_n2a(ifa->ifa_family, |
287 | niro | 532 | RTA_DATA(rta_tb[IFA_LOCAL]), |
288 | niro | 816 | abuf, sizeof(abuf)), stdout); |
289 | niro | 532 | |
290 | niro | 984 | if (rta_tb[IFA_ADDRESS] == NULL |
291 | || memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]), 4) == 0 | ||
292 | ) { | ||
293 | niro | 816 | printf("/%d ", ifa->ifa_prefixlen); |
294 | niro | 532 | } else { |
295 | niro | 816 | printf(" peer %s/%d ", |
296 | niro | 532 | rt_addr_n2a(ifa->ifa_family, |
297 | RTA_DATA(rta_tb[IFA_ADDRESS]), | ||
298 | abuf, sizeof(abuf)), | ||
299 | ifa->ifa_prefixlen); | ||
300 | } | ||
301 | } | ||
302 | |||
303 | if (rta_tb[IFA_BROADCAST]) { | ||
304 | niro | 816 | printf("brd %s ", |
305 | niro | 532 | rt_addr_n2a(ifa->ifa_family, |
306 | RTA_DATA(rta_tb[IFA_BROADCAST]), | ||
307 | abuf, sizeof(abuf))); | ||
308 | } | ||
309 | if (rta_tb[IFA_ANYCAST]) { | ||
310 | niro | 816 | printf("any %s ", |
311 | niro | 532 | rt_addr_n2a(ifa->ifa_family, |
312 | RTA_DATA(rta_tb[IFA_ANYCAST]), | ||
313 | abuf, sizeof(abuf))); | ||
314 | } | ||
315 | niro | 984 | printf("scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1)); |
316 | niro | 816 | if (ifa->ifa_flags & IFA_F_SECONDARY) { |
317 | niro | 532 | ifa->ifa_flags &= ~IFA_F_SECONDARY; |
318 | niro | 816 | printf("secondary "); |
319 | niro | 532 | } |
320 | niro | 816 | if (ifa->ifa_flags & IFA_F_TENTATIVE) { |
321 | niro | 532 | ifa->ifa_flags &= ~IFA_F_TENTATIVE; |
322 | niro | 816 | printf("tentative "); |
323 | niro | 532 | } |
324 | niro | 816 | if (ifa->ifa_flags & IFA_F_DEPRECATED) { |
325 | niro | 532 | ifa->ifa_flags &= ~IFA_F_DEPRECATED; |
326 | niro | 816 | printf("deprecated "); |
327 | niro | 532 | } |
328 | niro | 816 | if (!(ifa->ifa_flags & IFA_F_PERMANENT)) { |
329 | printf("dynamic "); | ||
330 | niro | 532 | } else |
331 | ifa->ifa_flags &= ~IFA_F_PERMANENT; | ||
332 | if (ifa->ifa_flags) | ||
333 | niro | 816 | printf("flags %02x ", ifa->ifa_flags); |
334 | niro | 532 | if (rta_tb[IFA_LABEL]) |
335 | niro | 816 | fputs((char*)RTA_DATA(rta_tb[IFA_LABEL]), stdout); |
336 | niro | 532 | if (rta_tb[IFA_CACHEINFO]) { |
337 | struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]); | ||
338 | char buf[128]; | ||
339 | niro | 816 | bb_putchar(_SL_); |
340 | niro | 532 | if (ci->ifa_valid == 0xFFFFFFFFU) |
341 | sprintf(buf, "valid_lft forever"); | ||
342 | else | ||
343 | sprintf(buf, "valid_lft %dsec", ci->ifa_valid); | ||
344 | if (ci->ifa_prefered == 0xFFFFFFFFU) | ||
345 | sprintf(buf+strlen(buf), " preferred_lft forever"); | ||
346 | else | ||
347 | sprintf(buf+strlen(buf), " preferred_lft %dsec", ci->ifa_prefered); | ||
348 | niro | 816 | printf(" %s", buf); |
349 | niro | 532 | } |
350 | niro | 816 | bb_putchar('\n'); |
351 | niro | 984 | /*fflush_all();*/ |
352 | niro | 532 | return 0; |
353 | } | ||
354 | |||
355 | |||
356 | niro | 984 | struct nlmsg_list { |
357 | niro | 532 | struct nlmsg_list *next; |
358 | struct nlmsghdr h; | ||
359 | }; | ||
360 | |||
361 | niro | 816 | static int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo) |
362 | niro | 532 | { |
363 | niro | 816 | for (; ainfo; ainfo = ainfo->next) { |
364 | niro | 532 | 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 | niro | 816 | print_addrinfo(NULL, n, NULL); |
378 | niro | 532 | } |
379 | return 0; | ||
380 | } | ||
381 | |||
382 | |||
383 | niro | 984 | static int FAST_FUNC store_nlmsg(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg) |
384 | niro | 532 | { |
385 | struct nlmsg_list **linfo = (struct nlmsg_list**)arg; | ||
386 | struct nlmsg_list *h; | ||
387 | struct nlmsg_list **lp; | ||
388 | |||
389 | niro | 984 | h = xzalloc(n->nlmsg_len + sizeof(void*)); |
390 | niro | 532 | |
391 | memcpy(&h->h, n, n->nlmsg_len); | ||
392 | niro | 984 | /*h->next = NULL; - xzalloc did it */ |
393 | niro | 532 | |
394 | niro | 816 | for (lp = linfo; *lp; lp = &(*lp)->next) |
395 | continue; | ||
396 | niro | 532 | *lp = h; |
397 | |||
398 | ll_remember_index(who, n, NULL); | ||
399 | return 0; | ||
400 | } | ||
401 | |||
402 | static void ipaddr_reset_filter(int _oneline) | ||
403 | { | ||
404 | memset(&filter, 0, sizeof(filter)); | ||
405 | filter.oneline = _oneline; | ||
406 | } | ||
407 | |||
408 | niro | 816 | /* Return value becomes exitcode. It's okay to not return at all */ |
409 | int ipaddr_list_or_flush(char **argv, int flush) | ||
410 | niro | 532 | { |
411 | niro | 816 | static const char option[] ALIGN1 = "to\0""scope\0""up\0""label\0""dev\0"; |
412 | niro | 532 | |
413 | struct nlmsg_list *linfo = NULL; | ||
414 | struct nlmsg_list *ainfo = NULL; | ||
415 | struct nlmsg_list *l; | ||
416 | struct rtnl_handle rth; | ||
417 | char *filter_dev = NULL; | ||
418 | int no_link = 0; | ||
419 | |||
420 | ipaddr_reset_filter(oneline); | ||
421 | filter.showqueue = 1; | ||
422 | |||
423 | if (filter.family == AF_UNSPEC) | ||
424 | filter.family = preferred_family; | ||
425 | |||
426 | if (flush) { | ||
427 | niro | 816 | if (!*argv) { |
428 | bb_error_msg_and_die(bb_msg_requires_arg, "flush"); | ||
429 | niro | 532 | } |
430 | if (filter.family == AF_PACKET) { | ||
431 | niro | 984 | bb_error_msg_and_die("can't flush link addresses"); |
432 | niro | 532 | } |
433 | } | ||
434 | |||
435 | niro | 816 | while (*argv) { |
436 | const int option_num = index_in_strings(option, *argv); | ||
437 | niro | 532 | switch (option_num) { |
438 | case 0: /* to */ | ||
439 | NEXT_ARG(); | ||
440 | get_prefix(&filter.pfx, *argv, filter.family); | ||
441 | if (filter.family == AF_UNSPEC) { | ||
442 | filter.family = filter.pfx.family; | ||
443 | } | ||
444 | break; | ||
445 | case 1: /* scope */ | ||
446 | { | ||
447 | uint32_t scope = 0; | ||
448 | NEXT_ARG(); | ||
449 | filter.scopemask = -1; | ||
450 | if (rtnl_rtscope_a2n(&scope, *argv)) { | ||
451 | if (strcmp(*argv, "all") != 0) { | ||
452 | invarg(*argv, "scope"); | ||
453 | } | ||
454 | scope = RT_SCOPE_NOWHERE; | ||
455 | filter.scopemask = 0; | ||
456 | } | ||
457 | filter.scope = scope; | ||
458 | break; | ||
459 | } | ||
460 | case 2: /* up */ | ||
461 | filter.up = 1; | ||
462 | break; | ||
463 | case 3: /* label */ | ||
464 | NEXT_ARG(); | ||
465 | filter.label = *argv; | ||
466 | break; | ||
467 | case 4: /* dev */ | ||
468 | NEXT_ARG(); | ||
469 | default: | ||
470 | if (filter_dev) { | ||
471 | duparg2("dev", *argv); | ||
472 | } | ||
473 | filter_dev = *argv; | ||
474 | } | ||
475 | argv++; | ||
476 | } | ||
477 | |||
478 | niro | 816 | xrtnl_open(&rth); |
479 | niro | 532 | |
480 | niro | 816 | xrtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK); |
481 | xrtnl_dump_filter(&rth, store_nlmsg, &linfo); | ||
482 | niro | 532 | |
483 | if (filter_dev) { | ||
484 | niro | 816 | filter.ifindex = xll_name_to_index(filter_dev); |
485 | niro | 532 | } |
486 | |||
487 | if (flush) { | ||
488 | char flushb[4096-512]; | ||
489 | |||
490 | filter.flushb = flushb; | ||
491 | filter.flushp = 0; | ||
492 | filter.flushe = sizeof(flushb); | ||
493 | filter.rth = &rth; | ||
494 | |||
495 | for (;;) { | ||
496 | niro | 816 | xrtnl_wilddump_request(&rth, filter.family, RTM_GETADDR); |
497 | niro | 532 | filter.flushed = 0; |
498 | niro | 816 | xrtnl_dump_filter(&rth, print_addrinfo, NULL); |
499 | niro | 532 | if (filter.flushed == 0) { |
500 | return 0; | ||
501 | } | ||
502 | if (flush_update() < 0) | ||
503 | niro | 816 | return 1; |
504 | niro | 532 | } |
505 | } | ||
506 | |||
507 | if (filter.family != AF_PACKET) { | ||
508 | niro | 816 | xrtnl_wilddump_request(&rth, filter.family, RTM_GETADDR); |
509 | xrtnl_dump_filter(&rth, store_nlmsg, &ainfo); | ||
510 | niro | 532 | } |
511 | |||
512 | |||
513 | if (filter.family && filter.family != AF_PACKET) { | ||
514 | struct nlmsg_list **lp; | ||
515 | niro | 816 | lp = &linfo; |
516 | niro | 532 | |
517 | if (filter.oneline) | ||
518 | no_link = 1; | ||
519 | |||
520 | niro | 816 | while ((l = *lp) != NULL) { |
521 | niro | 532 | int ok = 0; |
522 | struct ifinfomsg *ifi = NLMSG_DATA(&l->h); | ||
523 | struct nlmsg_list *a; | ||
524 | |||
525 | niro | 816 | for (a = ainfo; a; a = a->next) { |
526 | niro | 532 | struct nlmsghdr *n = &a->h; |
527 | struct ifaddrmsg *ifa = NLMSG_DATA(n); | ||
528 | |||
529 | if (ifa->ifa_index != ifi->ifi_index || | ||
530 | (filter.family && filter.family != ifa->ifa_family)) | ||
531 | continue; | ||
532 | niro | 816 | if ((filter.scope ^ ifa->ifa_scope) & filter.scopemask) |
533 | niro | 532 | continue; |
534 | niro | 816 | if ((filter.flags ^ ifa->ifa_flags) & filter.flagmask) |
535 | niro | 532 | continue; |
536 | if (filter.pfx.family || filter.label) { | ||
537 | struct rtattr *tb[IFA_MAX+1]; | ||
538 | memset(tb, 0, sizeof(tb)); | ||
539 | parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n)); | ||
540 | if (!tb[IFA_LOCAL]) | ||
541 | tb[IFA_LOCAL] = tb[IFA_ADDRESS]; | ||
542 | |||
543 | if (filter.pfx.family && tb[IFA_LOCAL]) { | ||
544 | inet_prefix dst; | ||
545 | memset(&dst, 0, sizeof(dst)); | ||
546 | dst.family = ifa->ifa_family; | ||
547 | memcpy(&dst.data, RTA_DATA(tb[IFA_LOCAL]), RTA_PAYLOAD(tb[IFA_LOCAL])); | ||
548 | if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen)) | ||
549 | continue; | ||
550 | } | ||
551 | if (filter.label) { | ||
552 | SPRINT_BUF(b1); | ||
553 | const char *label; | ||
554 | if (tb[IFA_LABEL]) | ||
555 | label = RTA_DATA(tb[IFA_LABEL]); | ||
556 | else | ||
557 | label = ll_idx_n2a(ifa->ifa_index, b1); | ||
558 | if (fnmatch(filter.label, label, 0) != 0) | ||
559 | continue; | ||
560 | } | ||
561 | } | ||
562 | |||
563 | ok = 1; | ||
564 | break; | ||
565 | } | ||
566 | if (!ok) | ||
567 | *lp = l->next; | ||
568 | else | ||
569 | lp = &l->next; | ||
570 | } | ||
571 | } | ||
572 | |||
573 | niro | 816 | for (l = linfo; l; l = l->next) { |
574 | if (no_link || print_linkinfo(&l->h) == 0) { | ||
575 | niro | 532 | struct ifinfomsg *ifi = NLMSG_DATA(&l->h); |
576 | if (filter.family != AF_PACKET) | ||
577 | niro | 816 | print_selected_addrinfo(ifi->ifi_index, ainfo); |
578 | niro | 532 | } |
579 | } | ||
580 | |||
581 | niro | 816 | return 0; |
582 | niro | 532 | } |
583 | |||
584 | static int default_scope(inet_prefix *lcl) | ||
585 | { | ||
586 | if (lcl->family == AF_INET) { | ||
587 | if (lcl->bytelen >= 1 && *(uint8_t*)&lcl->data == 127) | ||
588 | return RT_SCOPE_HOST; | ||
589 | } | ||
590 | return 0; | ||
591 | } | ||
592 | |||
593 | niro | 816 | /* Return value becomes exitcode. It's okay to not return at all */ |
594 | static int ipaddr_modify(int cmd, char **argv) | ||
595 | niro | 532 | { |
596 | niro | 816 | static const char option[] ALIGN1 = |
597 | "peer\0""remote\0""broadcast\0""brd\0" | ||
598 | "anycast\0""scope\0""dev\0""label\0""local\0"; | ||
599 | niro | 532 | struct rtnl_handle rth; |
600 | struct { | ||
601 | niro | 816 | struct nlmsghdr n; |
602 | struct ifaddrmsg ifa; | ||
603 | char buf[256]; | ||
604 | niro | 532 | } req; |
605 | niro | 816 | char *d = NULL; |
606 | char *l = NULL; | ||
607 | niro | 532 | inet_prefix lcl; |
608 | inet_prefix peer; | ||
609 | int local_len = 0; | ||
610 | int peer_len = 0; | ||
611 | int brd_len = 0; | ||
612 | int any_len = 0; | ||
613 | niro | 816 | bool scoped = 0; |
614 | niro | 532 | |
615 | memset(&req, 0, sizeof(req)); | ||
616 | |||
617 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg)); | ||
618 | req.n.nlmsg_flags = NLM_F_REQUEST; | ||
619 | req.n.nlmsg_type = cmd; | ||
620 | req.ifa.ifa_family = preferred_family; | ||
621 | |||
622 | niro | 816 | while (*argv) { |
623 | const int option_num = index_in_strings(option, *argv); | ||
624 | niro | 532 | switch (option_num) { |
625 | case 0: /* peer */ | ||
626 | case 1: /* remote */ | ||
627 | NEXT_ARG(); | ||
628 | |||
629 | if (peer_len) { | ||
630 | duparg("peer", *argv); | ||
631 | } | ||
632 | get_prefix(&peer, *argv, req.ifa.ifa_family); | ||
633 | peer_len = peer.bytelen; | ||
634 | if (req.ifa.ifa_family == AF_UNSPEC) { | ||
635 | req.ifa.ifa_family = peer.family; | ||
636 | } | ||
637 | addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen); | ||
638 | req.ifa.ifa_prefixlen = peer.bitlen; | ||
639 | break; | ||
640 | case 2: /* broadcast */ | ||
641 | case 3: /* brd */ | ||
642 | { | ||
643 | inet_prefix addr; | ||
644 | NEXT_ARG(); | ||
645 | if (brd_len) { | ||
646 | duparg("broadcast", *argv); | ||
647 | } | ||
648 | if (LONE_CHAR(*argv, '+')) { | ||
649 | brd_len = -1; | ||
650 | niro | 816 | } else if (LONE_DASH(*argv)) { |
651 | niro | 532 | brd_len = -2; |
652 | } else { | ||
653 | get_addr(&addr, *argv, req.ifa.ifa_family); | ||
654 | if (req.ifa.ifa_family == AF_UNSPEC) | ||
655 | req.ifa.ifa_family = addr.family; | ||
656 | addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen); | ||
657 | brd_len = addr.bytelen; | ||
658 | } | ||
659 | break; | ||
660 | } | ||
661 | case 4: /* anycast */ | ||
662 | { | ||
663 | inet_prefix addr; | ||
664 | NEXT_ARG(); | ||
665 | if (any_len) { | ||
666 | duparg("anycast", *argv); | ||
667 | } | ||
668 | get_addr(&addr, *argv, req.ifa.ifa_family); | ||
669 | if (req.ifa.ifa_family == AF_UNSPEC) { | ||
670 | req.ifa.ifa_family = addr.family; | ||
671 | } | ||
672 | addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen); | ||
673 | any_len = addr.bytelen; | ||
674 | break; | ||
675 | } | ||
676 | case 5: /* scope */ | ||
677 | { | ||
678 | uint32_t scope = 0; | ||
679 | NEXT_ARG(); | ||
680 | if (rtnl_rtscope_a2n(&scope, *argv)) { | ||
681 | invarg(*argv, "scope"); | ||
682 | } | ||
683 | req.ifa.ifa_scope = scope; | ||
684 | scoped = 1; | ||
685 | break; | ||
686 | } | ||
687 | case 6: /* dev */ | ||
688 | NEXT_ARG(); | ||
689 | d = *argv; | ||
690 | break; | ||
691 | case 7: /* label */ | ||
692 | NEXT_ARG(); | ||
693 | l = *argv; | ||
694 | addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l)+1); | ||
695 | break; | ||
696 | case 8: /* local */ | ||
697 | NEXT_ARG(); | ||
698 | default: | ||
699 | if (local_len) { | ||
700 | duparg2("local", *argv); | ||
701 | } | ||
702 | get_prefix(&lcl, *argv, req.ifa.ifa_family); | ||
703 | if (req.ifa.ifa_family == AF_UNSPEC) { | ||
704 | req.ifa.ifa_family = lcl.family; | ||
705 | } | ||
706 | addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen); | ||
707 | local_len = lcl.bytelen; | ||
708 | } | ||
709 | argv++; | ||
710 | } | ||
711 | |||
712 | if (d == NULL) { | ||
713 | niro | 816 | bb_error_msg(bb_msg_requires_arg, "\"dev\""); |
714 | niro | 532 | return -1; |
715 | } | ||
716 | niro | 816 | if (l && strncmp(d, l, strlen(d)) != 0) { |
717 | niro | 532 | bb_error_msg_and_die("\"dev\" (%s) must match \"label\" (%s)", d, l); |
718 | } | ||
719 | |||
720 | if (peer_len == 0 && local_len && cmd != RTM_DELADDR) { | ||
721 | peer = lcl; | ||
722 | addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen); | ||
723 | } | ||
724 | if (req.ifa.ifa_prefixlen == 0) | ||
725 | req.ifa.ifa_prefixlen = lcl.bitlen; | ||
726 | |||
727 | if (brd_len < 0 && cmd != RTM_DELADDR) { | ||
728 | inet_prefix brd; | ||
729 | int i; | ||
730 | if (req.ifa.ifa_family != AF_INET) { | ||
731 | niro | 816 | bb_error_msg_and_die("broadcast can be set only for IPv4 addresses"); |
732 | niro | 532 | } |
733 | brd = peer; | ||
734 | if (brd.bitlen <= 30) { | ||
735 | for (i=31; i>=brd.bitlen; i--) { | ||
736 | if (brd_len == -1) | ||
737 | brd.data[0] |= htonl(1<<(31-i)); | ||
738 | else | ||
739 | brd.data[0] &= ~htonl(1<<(31-i)); | ||
740 | } | ||
741 | addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen); | ||
742 | brd_len = brd.bytelen; | ||
743 | } | ||
744 | } | ||
745 | if (!scoped && cmd != RTM_DELADDR) | ||
746 | req.ifa.ifa_scope = default_scope(&lcl); | ||
747 | |||
748 | niro | 816 | xrtnl_open(&rth); |
749 | niro | 532 | |
750 | ll_init_map(&rth); | ||
751 | |||
752 | niro | 816 | req.ifa.ifa_index = xll_name_to_index(d); |
753 | niro | 532 | |
754 | if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0) | ||
755 | niro | 816 | return 2; |
756 | niro | 532 | |
757 | niro | 816 | return 0; |
758 | niro | 532 | } |
759 | |||
760 | niro | 816 | /* Return value becomes exitcode. It's okay to not return at all */ |
761 | int do_ipaddr(char **argv) | ||
762 | niro | 532 | { |
763 | niro | 816 | static const char commands[] ALIGN1 = |
764 | "add\0""delete\0""list\0""show\0""lst\0""flush\0"; | ||
765 | niro | 532 | |
766 | niro | 816 | int command_num = 2; /* default command is list */ |
767 | niro | 532 | |
768 | if (*argv) { | ||
769 | niro | 816 | command_num = index_in_substrings(commands, *argv); |
770 | if (command_num < 0 || command_num > 5) | ||
771 | bb_error_msg_and_die("unknown command %s", *argv); | ||
772 | argv++; | ||
773 | niro | 532 | } |
774 | niro | 816 | if (command_num == 0) /* add */ |
775 | return ipaddr_modify(RTM_NEWADDR, argv); | ||
776 | if (command_num == 1) /* delete */ | ||
777 | return ipaddr_modify(RTM_DELADDR, argv); | ||
778 | if (command_num == 5) /* flush */ | ||
779 | return ipaddr_list_or_flush(argv, 1); | ||
780 | /* 2 == list, 3 == show, 4 == lst */ | ||
781 | return ipaddr_list_or_flush(argv, 0); | ||
782 | niro | 532 | } |