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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
f579559b TG |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2013 Tom Gundersen <teg@jklm.no> | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
20 | ||
21 | #include <net/if.h> | |
22 | ||
b5efdb8a | 23 | #include "alloc-util.h" |
f579559b | 24 | #include "conf-parser.h" |
12c2884c | 25 | #include "firewall-util.h" |
fc2f9534 | 26 | #include "netlink-util.h" |
6bedfcbb | 27 | #include "networkd-address.h" |
23f53b99 | 28 | #include "networkd-manager.h" |
6bedfcbb | 29 | #include "parse-util.h" |
3ac8e543 | 30 | #include "set.h" |
d31645ad | 31 | #include "socket-util.h" |
07630cea | 32 | #include "string-util.h" |
3ac8e543 TG |
33 | #include "utf8.h" |
34 | #include "util.h" | |
f579559b | 35 | |
1b566071 | 36 | #define ADDRESSES_PER_LINK_MAX 2048U |
8c34b963 LP |
37 | #define STATIC_ADDRESSES_PER_NETWORK_MAX 1024U |
38 | ||
f0213e37 TG |
39 | int address_new(Address **ret) { |
40 | _cleanup_address_free_ Address *address = NULL; | |
41 | ||
42 | address = new0(Address, 1); | |
43 | if (!address) | |
44 | return -ENOMEM; | |
aba496a5 UTL |
45 | |
46 | address->family = AF_UNSPEC; | |
47 | address->scope = RT_SCOPE_UNIVERSE; | |
48 | address->cinfo.ifa_prefered = CACHE_INFO_INFINITY_LIFE_TIME; | |
49 | address->cinfo.ifa_valid = CACHE_INFO_INFINITY_LIFE_TIME; | |
f0213e37 | 50 | |
1cc6c93a | 51 | *ret = TAKE_PTR(address); |
f0213e37 TG |
52 | |
53 | return 0; | |
aba496a5 UTL |
54 | } |
55 | ||
f4859fc7 SS |
56 | int address_new_static(Network *network, const char *filename, unsigned section_line, Address **ret) { |
57 | _cleanup_network_config_section_free_ NetworkConfigSection *n = NULL; | |
f579559b | 58 | _cleanup_address_free_ Address *address = NULL; |
f0213e37 | 59 | int r; |
f579559b | 60 | |
8c34b963 LP |
61 | assert(network); |
62 | assert(ret); | |
48317c39 | 63 | assert(!!filename == (section_line > 0)); |
8c34b963 | 64 | |
48317c39 | 65 | if (filename) { |
f4859fc7 SS |
66 | r = network_config_section_new(filename, section_line, &n); |
67 | if (r < 0) | |
68 | return r; | |
69 | ||
70 | address = hashmap_get(network->addresses_by_section, n); | |
6ae115c1 | 71 | if (address) { |
1cc6c93a | 72 | *ret = TAKE_PTR(address); |
6ae115c1 TG |
73 | |
74 | return 0; | |
75 | } | |
76 | } | |
77 | ||
8c34b963 LP |
78 | if (network->n_static_addresses >= STATIC_ADDRESSES_PER_NETWORK_MAX) |
79 | return -E2BIG; | |
80 | ||
f0213e37 TG |
81 | r = address_new(&address); |
82 | if (r < 0) | |
83 | return r; | |
801bd9e8 | 84 | |
48317c39 | 85 | if (filename) { |
1cc6c93a | 86 | address->section = TAKE_PTR(n); |
fcc48287 | 87 | |
f7fe70ea SS |
88 | r = hashmap_put(network->addresses_by_section, address->section, address); |
89 | if (r < 0) | |
90 | return r; | |
6ae115c1 TG |
91 | } |
92 | ||
5215524d SS |
93 | address->network = network; |
94 | LIST_APPEND(addresses, network->static_addresses, address); | |
8c34b963 | 95 | network->n_static_addresses++; |
5215524d | 96 | |
1cc6c93a | 97 | *ret = TAKE_PTR(address); |
f579559b TG |
98 | |
99 | return 0; | |
100 | } | |
101 | ||
102 | void address_free(Address *address) { | |
103 | if (!address) | |
104 | return; | |
105 | ||
f048a16b | 106 | if (address->network) { |
3d3d4255 | 107 | LIST_REMOVE(addresses, address->network->static_addresses, address); |
8c34b963 LP |
108 | assert(address->network->n_static_addresses > 0); |
109 | address->network->n_static_addresses--; | |
f579559b | 110 | |
f4859fc7 SS |
111 | if (address->section) { |
112 | hashmap_remove(address->network->addresses_by_section, address->section); | |
113 | network_config_section_free(address->section); | |
114 | } | |
f048a16b | 115 | } |
6ae115c1 | 116 | |
adda1ed9 | 117 | if (address->link) { |
cf1d700d | 118 | set_remove(address->link->addresses, address); |
adda1ed9 | 119 | set_remove(address->link->addresses_foreign, address); |
f150100a SS |
120 | |
121 | if (in_addr_equal(AF_INET6, &address->in_addr, (const union in_addr_union *) &address->link->ipv6ll_address)) | |
122 | memzero(&address->link->ipv6ll_address, sizeof(struct in6_addr)); | |
adda1ed9 | 123 | } |
cf1d700d | 124 | |
f579559b TG |
125 | free(address); |
126 | } | |
127 | ||
3ac8e543 TG |
128 | static void address_hash_func(const void *b, struct siphash *state) { |
129 | const Address *a = b; | |
130 | ||
131 | assert(a); | |
132 | ||
133 | siphash24_compress(&a->family, sizeof(a->family), state); | |
134 | ||
135 | switch (a->family) { | |
136 | case AF_INET: | |
137 | siphash24_compress(&a->prefixlen, sizeof(a->prefixlen), state); | |
138 | ||
139 | /* peer prefix */ | |
140 | if (a->prefixlen != 0) { | |
141 | uint32_t prefix; | |
142 | ||
143 | if (a->in_addr_peer.in.s_addr != 0) | |
144 | prefix = be32toh(a->in_addr_peer.in.s_addr) >> (32 - a->prefixlen); | |
145 | else | |
146 | prefix = be32toh(a->in_addr.in.s_addr) >> (32 - a->prefixlen); | |
147 | ||
148 | siphash24_compress(&prefix, sizeof(prefix), state); | |
149 | } | |
150 | ||
4831981d | 151 | _fallthrough_; |
3ac8e543 TG |
152 | case AF_INET6: |
153 | /* local address */ | |
154 | siphash24_compress(&a->in_addr, FAMILY_ADDRESS_SIZE(a->family), state); | |
155 | ||
156 | break; | |
157 | default: | |
158 | /* treat any other address family as AF_UNSPEC */ | |
159 | break; | |
160 | } | |
161 | } | |
162 | ||
163 | static int address_compare_func(const void *c1, const void *c2) { | |
164 | const Address *a1 = c1, *a2 = c2; | |
165 | ||
166 | if (a1->family < a2->family) | |
167 | return -1; | |
168 | if (a1->family > a2->family) | |
169 | return 1; | |
170 | ||
171 | switch (a1->family) { | |
172 | /* use the same notion of equality as the kernel does */ | |
173 | case AF_INET: | |
174 | if (a1->prefixlen < a2->prefixlen) | |
175 | return -1; | |
176 | if (a1->prefixlen > a2->prefixlen) | |
177 | return 1; | |
178 | ||
179 | /* compare the peer prefixes */ | |
180 | if (a1->prefixlen != 0) { | |
181 | /* make sure we don't try to shift by 32. | |
182 | * See ISO/IEC 9899:TC3 § 6.5.7.3. */ | |
183 | uint32_t b1, b2; | |
184 | ||
185 | if (a1->in_addr_peer.in.s_addr != 0) | |
186 | b1 = be32toh(a1->in_addr_peer.in.s_addr) >> (32 - a1->prefixlen); | |
187 | else | |
188 | b1 = be32toh(a1->in_addr.in.s_addr) >> (32 - a1->prefixlen); | |
189 | ||
190 | if (a2->in_addr_peer.in.s_addr != 0) | |
191 | b2 = be32toh(a2->in_addr_peer.in.s_addr) >> (32 - a1->prefixlen); | |
192 | else | |
193 | b2 = be32toh(a2->in_addr.in.s_addr) >> (32 - a1->prefixlen); | |
194 | ||
195 | if (b1 < b2) | |
196 | return -1; | |
197 | if (b1 > b2) | |
198 | return 1; | |
199 | } | |
200 | ||
4831981d | 201 | _fallthrough_; |
3ac8e543 TG |
202 | case AF_INET6: |
203 | return memcmp(&a1->in_addr, &a2->in_addr, FAMILY_ADDRESS_SIZE(a1->family)); | |
204 | default: | |
205 | /* treat any other address family as AF_UNSPEC */ | |
206 | return 0; | |
207 | } | |
208 | } | |
209 | ||
210 | static const struct hash_ops address_hash_ops = { | |
211 | .hash = address_hash_func, | |
212 | .compare = address_compare_func | |
213 | }; | |
214 | ||
215 | bool address_equal(Address *a1, Address *a2) { | |
216 | if (a1 == a2) | |
217 | return true; | |
218 | ||
219 | if (!a1 || !a2) | |
220 | return false; | |
221 | ||
222 | return address_compare_func(a1, a2) == 0; | |
223 | } | |
224 | ||
91b5f997 TG |
225 | static int address_establish(Address *address, Link *link) { |
226 | bool masq; | |
227 | int r; | |
228 | ||
229 | assert(address); | |
230 | assert(link); | |
231 | ||
232 | masq = link->network && | |
fcf50cff TG |
233 | link->network->ip_masquerade && |
234 | address->family == AF_INET && | |
235 | address->scope < RT_SCOPE_LINK; | |
91b5f997 TG |
236 | |
237 | /* Add firewall entry if this is requested */ | |
238 | if (address->ip_masquerade_done != masq) { | |
239 | union in_addr_union masked = address->in_addr; | |
240 | in_addr_mask(address->family, &masked, address->prefixlen); | |
241 | ||
242 | r = fw_add_masquerade(masq, AF_INET, 0, &masked, address->prefixlen, NULL, NULL, 0); | |
243 | if (r < 0) | |
244 | log_link_warning_errno(link, r, "Could not enable IP masquerading: %m"); | |
245 | ||
246 | address->ip_masquerade_done = masq; | |
247 | } | |
248 | ||
249 | return 0; | |
250 | } | |
251 | ||
adda1ed9 TG |
252 | static int address_add_internal(Link *link, Set **addresses, |
253 | int family, | |
254 | const union in_addr_union *in_addr, | |
255 | unsigned char prefixlen, | |
256 | Address **ret) { | |
054f0db4 | 257 | _cleanup_address_free_ Address *address = NULL; |
cf1d700d TG |
258 | int r; |
259 | ||
260 | assert(link); | |
adda1ed9 | 261 | assert(addresses); |
054f0db4 | 262 | assert(in_addr); |
054f0db4 TG |
263 | |
264 | r = address_new(&address); | |
265 | if (r < 0) | |
266 | return r; | |
267 | ||
268 | address->family = family; | |
269 | address->in_addr = *in_addr; | |
270 | address->prefixlen = prefixlen; | |
63bbe5c7 TG |
271 | /* Consider address tentative until we get the real flags from the kernel */ |
272 | address->flags = IFA_F_TENTATIVE; | |
cf1d700d | 273 | |
adda1ed9 | 274 | r = set_ensure_allocated(addresses, &address_hash_ops); |
cf1d700d TG |
275 | if (r < 0) |
276 | return r; | |
277 | ||
adda1ed9 | 278 | r = set_put(*addresses, address); |
cf1d700d TG |
279 | if (r < 0) |
280 | return r; | |
281 | ||
282 | address->link = link; | |
283 | ||
adda1ed9 TG |
284 | if (ret) |
285 | *ret = address; | |
286 | ||
054f0db4 TG |
287 | address = NULL; |
288 | ||
cf1d700d TG |
289 | return 0; |
290 | } | |
291 | ||
adda1ed9 TG |
292 | int address_add_foreign(Link *link, int family, const union in_addr_union *in_addr, unsigned char prefixlen, Address **ret) { |
293 | return address_add_internal(link, &link->addresses_foreign, family, in_addr, prefixlen, ret); | |
294 | } | |
295 | ||
c4a03a56 | 296 | int address_add(Link *link, int family, const union in_addr_union *in_addr, unsigned char prefixlen, Address **ret) { |
cab974b0 | 297 | Address *address; |
e7780c8d TG |
298 | int r; |
299 | ||
cab974b0 TG |
300 | r = address_get(link, family, in_addr, prefixlen, &address); |
301 | if (r == -ENOENT) { | |
302 | /* Address does not exist, create a new one */ | |
303 | r = address_add_internal(link, &link->addresses, family, in_addr, prefixlen, &address); | |
304 | if (r < 0) | |
305 | return r; | |
306 | } else if (r == 0) { | |
307 | /* Take over a foreign address */ | |
308 | r = set_ensure_allocated(&link->addresses, &address_hash_ops); | |
309 | if (r < 0) | |
310 | return r; | |
311 | ||
312 | r = set_put(link->addresses, address); | |
313 | if (r < 0) | |
314 | return r; | |
315 | ||
316 | set_remove(link->addresses_foreign, address); | |
317 | } else if (r == 1) { | |
318 | /* Already exists, do nothing */ | |
319 | ; | |
320 | } else | |
e7780c8d TG |
321 | return r; |
322 | ||
cab974b0 TG |
323 | if (ret) |
324 | *ret = address; | |
e7780c8d TG |
325 | |
326 | return 0; | |
adda1ed9 TG |
327 | } |
328 | ||
fcf50cff | 329 | static int address_release(Address *address) { |
5a8bcb67 LP |
330 | int r; |
331 | ||
332 | assert(address); | |
fcf50cff | 333 | assert(address->link); |
5a8bcb67 | 334 | |
91b5f997 TG |
335 | /* Remove masquerading firewall entry if it was added */ |
336 | if (address->ip_masquerade_done) { | |
5a8bcb67 LP |
337 | union in_addr_union masked = address->in_addr; |
338 | in_addr_mask(address->family, &masked, address->prefixlen); | |
339 | ||
91b5f997 | 340 | r = fw_add_masquerade(false, AF_INET, 0, &masked, address->prefixlen, NULL, NULL, 0); |
5a8bcb67 | 341 | if (r < 0) |
fcf50cff | 342 | log_link_warning_errno(address->link, r, "Failed to disable IP masquerading: %m"); |
5a8bcb67 | 343 | |
91b5f997 | 344 | address->ip_masquerade_done = false; |
5a8bcb67 LP |
345 | } |
346 | ||
347 | return 0; | |
348 | } | |
349 | ||
889b550f LP |
350 | int address_update( |
351 | Address *address, | |
352 | unsigned char flags, | |
353 | unsigned char scope, | |
354 | const struct ifa_cacheinfo *cinfo) { | |
355 | ||
36c32f61 | 356 | bool ready; |
e7ab854c | 357 | int r; |
36c32f61 TG |
358 | |
359 | assert(address); | |
360 | assert(cinfo); | |
7209086d SS |
361 | assert_return(address->link, 1); |
362 | ||
363 | if (IN_SET(address->link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
364 | return 1; | |
36c32f61 TG |
365 | |
366 | ready = address_is_ready(address); | |
367 | ||
368 | address->flags = flags; | |
369 | address->scope = scope; | |
370 | address->cinfo = *cinfo; | |
371 | ||
7209086d SS |
372 | link_update_operstate(address->link); |
373 | ||
374 | if (!ready && address_is_ready(address)) { | |
375 | link_check_ready(address->link); | |
376 | ||
377 | if (address->family == AF_INET6 && | |
378 | in_addr_is_link_local(AF_INET6, &address->in_addr) > 0 && | |
379 | in_addr_is_null(AF_INET6, (const union in_addr_union*) &address->link->ipv6ll_address) > 0) { | |
380 | ||
381 | r = link_ipv6ll_gained(address->link, &address->in_addr.in6); | |
382 | if (r < 0) | |
383 | return r; | |
e7ab854c | 384 | } |
a3a019e1 | 385 | } |
36c32f61 TG |
386 | |
387 | return 0; | |
388 | } | |
389 | ||
91b5f997 | 390 | int address_drop(Address *address) { |
8012cd39 TG |
391 | Link *link; |
392 | bool ready; | |
393 | ||
5a8bcb67 | 394 | assert(address); |
91b5f997 | 395 | |
8012cd39 TG |
396 | ready = address_is_ready(address); |
397 | link = address->link; | |
398 | ||
fcf50cff | 399 | address_release(address); |
91b5f997 TG |
400 | address_free(address); |
401 | ||
84de38c5 TG |
402 | link_update_operstate(link); |
403 | ||
8012cd39 TG |
404 | if (link && !ready) |
405 | link_check_ready(link); | |
406 | ||
91b5f997 TG |
407 | return 0; |
408 | } | |
409 | ||
1b566071 LP |
410 | int address_get(Link *link, |
411 | int family, | |
412 | const union in_addr_union *in_addr, | |
413 | unsigned char prefixlen, | |
414 | Address **ret) { | |
415 | ||
416 | Address address, *existing; | |
91b5f997 | 417 | |
5a8bcb67 | 418 | assert(link); |
91b5f997 | 419 | assert(in_addr); |
5a8bcb67 | 420 | |
1b566071 LP |
421 | address = (Address) { |
422 | .family = family, | |
423 | .in_addr = *in_addr, | |
424 | .prefixlen = prefixlen, | |
425 | }; | |
5a8bcb67 | 426 | |
91b5f997 | 427 | existing = set_get(link->addresses, &address); |
cab974b0 | 428 | if (existing) { |
1b566071 LP |
429 | if (ret) |
430 | *ret = existing; | |
cab974b0 | 431 | return 1; |
adda1ed9 | 432 | } |
5a8bcb67 | 433 | |
1b566071 LP |
434 | existing = set_get(link->addresses_foreign, &address); |
435 | if (existing) { | |
436 | if (ret) | |
437 | *ret = existing; | |
438 | return 0; | |
439 | } | |
5a8bcb67 | 440 | |
1b566071 | 441 | return -ENOENT; |
5a8bcb67 LP |
442 | } |
443 | ||
483d099e ZJS |
444 | int address_remove( |
445 | Address *address, | |
446 | Link *link, | |
447 | sd_netlink_message_handler_t callback) { | |
448 | ||
4afd3348 | 449 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
407fe036 TG |
450 | int r; |
451 | ||
452 | assert(address); | |
4c701096 | 453 | assert(IN_SET(address->family, AF_INET, AF_INET6)); |
407fe036 TG |
454 | assert(link); |
455 | assert(link->ifindex > 0); | |
456 | assert(link->manager); | |
457 | assert(link->manager->rtnl); | |
458 | ||
151b9b96 LP |
459 | r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_DELADDR, |
460 | link->ifindex, address->family); | |
eb56eb9b MS |
461 | if (r < 0) |
462 | return log_error_errno(r, "Could not allocate RTM_DELADDR message: %m"); | |
407fe036 | 463 | |
5a723174 | 464 | r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen); |
eb56eb9b MS |
465 | if (r < 0) |
466 | return log_error_errno(r, "Could not set prefixlen: %m"); | |
5a723174 | 467 | |
407fe036 | 468 | if (address->family == AF_INET) |
1c4baffc | 469 | r = sd_netlink_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in); |
407fe036 | 470 | else if (address->family == AF_INET6) |
1c4baffc | 471 | r = sd_netlink_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6); |
eb56eb9b MS |
472 | if (r < 0) |
473 | return log_error_errno(r, "Could not append IFA_LOCAL attribute: %m"); | |
407fe036 | 474 | |
1c4baffc | 475 | r = sd_netlink_call_async(link->manager->rtnl, req, callback, link, 0, NULL); |
eb56eb9b MS |
476 | if (r < 0) |
477 | return log_error_errno(r, "Could not send rtnetlink message: %m"); | |
407fe036 | 478 | |
563c69c6 TG |
479 | link_ref(link); |
480 | ||
407fe036 TG |
481 | return 0; |
482 | } | |
483 | ||
11bf3cce LP |
484 | static int address_acquire(Link *link, Address *original, Address **ret) { |
485 | union in_addr_union in_addr = {}; | |
486 | struct in_addr broadcast = {}; | |
0099bc15 | 487 | _cleanup_address_free_ Address *na = NULL; |
11bf3cce LP |
488 | int r; |
489 | ||
490 | assert(link); | |
491 | assert(original); | |
492 | assert(ret); | |
493 | ||
494 | /* Something useful was configured? just use it */ | |
af93291c | 495 | if (in_addr_is_null(original->family, &original->in_addr) <= 0) |
11bf3cce LP |
496 | return 0; |
497 | ||
498 | /* The address is configured to be 0.0.0.0 or [::] by the user? | |
499 | * Then let's acquire something more useful from the pool. */ | |
500 | r = manager_address_pool_acquire(link->manager, original->family, original->prefixlen, &in_addr); | |
6a7a4e4d LP |
501 | if (r < 0) |
502 | return log_link_error_errno(link, r, "Failed to acquire address from pool: %m"); | |
11bf3cce | 503 | if (r == 0) { |
79008bdd | 504 | log_link_error(link, "Couldn't find free address for interface, all taken."); |
11bf3cce LP |
505 | return -EBUSY; |
506 | } | |
507 | ||
508 | if (original->family == AF_INET) { | |
d076c6f9 | 509 | /* Pick first address in range for ourselves ... */ |
11bf3cce LP |
510 | in_addr.in.s_addr = in_addr.in.s_addr | htobe32(1); |
511 | ||
512 | /* .. and use last as broadcast address */ | |
e87e2b78 SS |
513 | if (original->prefixlen > 30) |
514 | broadcast.s_addr = 0; | |
515 | else | |
516 | broadcast.s_addr = in_addr.in.s_addr | htobe32(0xFFFFFFFFUL >> original->prefixlen); | |
11bf3cce LP |
517 | } else if (original->family == AF_INET6) |
518 | in_addr.in6.s6_addr[15] |= 1; | |
519 | ||
f0213e37 | 520 | r = address_new(&na); |
11bf3cce LP |
521 | if (r < 0) |
522 | return r; | |
523 | ||
524 | na->family = original->family; | |
525 | na->prefixlen = original->prefixlen; | |
526 | na->scope = original->scope; | |
527 | na->cinfo = original->cinfo; | |
528 | ||
529 | if (original->label) { | |
530 | na->label = strdup(original->label); | |
0099bc15 | 531 | if (!na->label) |
11bf3cce | 532 | return -ENOMEM; |
11bf3cce LP |
533 | } |
534 | ||
535 | na->broadcast = broadcast; | |
536 | na->in_addr = in_addr; | |
537 | ||
538 | LIST_PREPEND(addresses, link->pool_addresses, na); | |
539 | ||
1cc6c93a | 540 | *ret = TAKE_PTR(na); |
0099bc15 | 541 | |
11bf3cce LP |
542 | return 0; |
543 | } | |
544 | ||
1b566071 LP |
545 | int address_configure( |
546 | Address *address, | |
547 | Link *link, | |
548 | sd_netlink_message_handler_t callback, | |
549 | bool update) { | |
550 | ||
4afd3348 | 551 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
f579559b TG |
552 | int r; |
553 | ||
c166a070 | 554 | assert(address); |
4c701096 | 555 | assert(IN_SET(address->family, AF_INET, AF_INET6)); |
c166a070 TG |
556 | assert(link); |
557 | assert(link->ifindex > 0); | |
f882c247 | 558 | assert(link->manager); |
c166a070 | 559 | assert(link->manager->rtnl); |
f882c247 | 560 | |
1b566071 LP |
561 | /* If this is a new address, then refuse adding more than the limit */ |
562 | if (address_get(link, address->family, &address->in_addr, address->prefixlen, NULL) <= 0 && | |
563 | set_size(link->addresses) >= ADDRESSES_PER_LINK_MAX) | |
564 | return -E2BIG; | |
565 | ||
11bf3cce LP |
566 | r = address_acquire(link, address, &address); |
567 | if (r < 0) | |
568 | return r; | |
569 | ||
66669078 TG |
570 | if (update) |
571 | r = sd_rtnl_message_new_addr_update(link->manager->rtnl, &req, | |
572 | link->ifindex, address->family); | |
573 | else | |
574 | r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_NEWADDR, | |
575 | link->ifindex, address->family); | |
eb56eb9b MS |
576 | if (r < 0) |
577 | return log_error_errno(r, "Could not allocate RTM_NEWADDR message: %m"); | |
f579559b | 578 | |
5a723174 | 579 | r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen); |
eb56eb9b MS |
580 | if (r < 0) |
581 | return log_error_errno(r, "Could not set prefixlen: %m"); | |
5a723174 | 582 | |
851c9f82 PF |
583 | address->flags |= IFA_F_PERMANENT; |
584 | ||
e63be084 SS |
585 | if (address->home_address) |
586 | address->flags |= IFA_F_HOMEADDRESS; | |
587 | ||
588 | if (address->duplicate_address_detection) | |
589 | address->flags |= IFA_F_NODAD; | |
590 | ||
591 | if (address->manage_temporary_address) | |
592 | address->flags |= IFA_F_MANAGETEMPADDR; | |
593 | ||
594 | if (address->prefix_route) | |
595 | address->flags |= IFA_F_NOPREFIXROUTE; | |
596 | ||
597 | if (address->autojoin) | |
598 | address->flags |= IFA_F_MCAUTOJOIN; | |
599 | ||
851c9f82 | 600 | r = sd_rtnl_message_addr_set_flags(req, (address->flags & 0xff)); |
eb56eb9b MS |
601 | if (r < 0) |
602 | return log_error_errno(r, "Could not set flags: %m"); | |
5a723174 | 603 | |
851c9f82 | 604 | if (address->flags & ~0xff) { |
1c4baffc | 605 | r = sd_netlink_message_append_u32(req, IFA_FLAGS, address->flags); |
851c9f82 PF |
606 | if (r < 0) |
607 | return log_error_errno(r, "Could not set extended flags: %m"); | |
608 | } | |
609 | ||
5c1d3fc9 | 610 | r = sd_rtnl_message_addr_set_scope(req, address->scope); |
eb56eb9b MS |
611 | if (r < 0) |
612 | return log_error_errno(r, "Could not set scope: %m"); | |
5a723174 | 613 | |
0a0dc69b | 614 | if (address->family == AF_INET) |
1c4baffc | 615 | r = sd_netlink_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in); |
0a0dc69b | 616 | else if (address->family == AF_INET6) |
1c4baffc | 617 | r = sd_netlink_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6); |
eb56eb9b MS |
618 | if (r < 0) |
619 | return log_error_errno(r, "Could not append IFA_LOCAL attribute: %m"); | |
f579559b | 620 | |
af93291c | 621 | if (!in_addr_is_null(address->family, &address->in_addr_peer)) { |
c081882f | 622 | if (address->family == AF_INET) |
1c4baffc | 623 | r = sd_netlink_message_append_in_addr(req, IFA_ADDRESS, &address->in_addr_peer.in); |
c081882f | 624 | else if (address->family == AF_INET6) |
1c4baffc | 625 | r = sd_netlink_message_append_in6_addr(req, IFA_ADDRESS, &address->in_addr_peer.in6); |
eb56eb9b MS |
626 | if (r < 0) |
627 | return log_error_errno(r, "Could not append IFA_ADDRESS attribute: %m"); | |
c081882f SS |
628 | } else { |
629 | if (address->family == AF_INET) { | |
e87e2b78 SS |
630 | if (address->prefixlen <= 30) { |
631 | r = sd_netlink_message_append_in_addr(req, IFA_BROADCAST, &address->broadcast); | |
632 | if (r < 0) | |
633 | return log_error_errno(r, "Could not append IFA_BROADCAST attribute: %m"); | |
634 | } | |
c081882f | 635 | } |
f579559b TG |
636 | } |
637 | ||
638 | if (address->label) { | |
1c4baffc | 639 | r = sd_netlink_message_append_string(req, IFA_LABEL, address->label); |
eb56eb9b MS |
640 | if (r < 0) |
641 | return log_error_errno(r, "Could not append IFA_LABEL attribute: %m"); | |
f579559b TG |
642 | } |
643 | ||
1c4baffc | 644 | r = sd_netlink_message_append_cache_info(req, IFA_CACHEINFO, |
68ceb9df | 645 | &address->cinfo); |
eb56eb9b MS |
646 | if (r < 0) |
647 | return log_error_errno(r, "Could not append IFA_CACHEINFO attribute: %m"); | |
68ceb9df | 648 | |
fcf50cff | 649 | r = address_establish(address, link); |
eb56eb9b | 650 | if (r < 0) |
fcf50cff TG |
651 | return r; |
652 | ||
653 | r = sd_netlink_call_async(link->manager->rtnl, req, callback, link, 0, NULL); | |
654 | if (r < 0) { | |
655 | address_release(address); | |
eb56eb9b | 656 | return log_error_errno(r, "Could not send rtnetlink message: %m"); |
fcf50cff | 657 | } |
f579559b | 658 | |
563c69c6 TG |
659 | link_ref(link); |
660 | ||
adda1ed9 TG |
661 | r = address_add(link, address->family, &address->in_addr, address->prefixlen, NULL); |
662 | if (r < 0) { | |
663 | address_release(address); | |
664 | return log_error_errno(r, "Could not add address: %m"); | |
665 | } | |
666 | ||
f579559b TG |
667 | return 0; |
668 | } | |
669 | ||
44e7b949 LP |
670 | int config_parse_broadcast( |
671 | const char *unit, | |
eb0ea358 TG |
672 | const char *filename, |
673 | unsigned line, | |
674 | const char *section, | |
675 | unsigned section_line, | |
676 | const char *lvalue, | |
677 | int ltype, | |
678 | const char *rvalue, | |
679 | void *data, | |
680 | void *userdata) { | |
44e7b949 | 681 | |
eb0ea358 TG |
682 | Network *network = userdata; |
683 | _cleanup_address_free_ Address *n = NULL; | |
eb0ea358 TG |
684 | int r; |
685 | ||
686 | assert(filename); | |
687 | assert(section); | |
688 | assert(lvalue); | |
689 | assert(rvalue); | |
690 | assert(data); | |
691 | ||
f4859fc7 | 692 | r = address_new_static(network, filename, section_line, &n); |
eb0ea358 TG |
693 | if (r < 0) |
694 | return r; | |
695 | ||
482e2ac1 | 696 | if (n->family == AF_INET6) { |
12ca818f | 697 | log_syntax(unit, LOG_ERR, filename, line, 0, "Broadcast is not valid for IPv6 addresses, ignoring assignment: %s", rvalue); |
482e2ac1 TG |
698 | return 0; |
699 | } | |
700 | ||
44e7b949 | 701 | r = in_addr_from_string(AF_INET, rvalue, (union in_addr_union*) &n->broadcast); |
eb0ea358 | 702 | if (r < 0) { |
12ca818f | 703 | log_syntax(unit, LOG_ERR, filename, line, r, "Broadcast is invalid, ignoring assignment: %s", rvalue); |
eb0ea358 TG |
704 | return 0; |
705 | } | |
706 | ||
44e7b949 | 707 | n->family = AF_INET; |
eb0ea358 TG |
708 | n = NULL; |
709 | ||
710 | return 0; | |
711 | } | |
712 | ||
f579559b TG |
713 | int config_parse_address(const char *unit, |
714 | const char *filename, | |
715 | unsigned line, | |
716 | const char *section, | |
71a61510 | 717 | unsigned section_line, |
f579559b TG |
718 | const char *lvalue, |
719 | int ltype, | |
720 | const char *rvalue, | |
721 | void *data, | |
722 | void *userdata) { | |
44e7b949 | 723 | |
6ae115c1 | 724 | Network *network = userdata; |
f579559b | 725 | _cleanup_address_free_ Address *n = NULL; |
44e7b949 LP |
726 | const char *address, *e; |
727 | union in_addr_union buffer; | |
728 | int r, f; | |
f579559b TG |
729 | |
730 | assert(filename); | |
6ae115c1 | 731 | assert(section); |
f579559b TG |
732 | assert(lvalue); |
733 | assert(rvalue); | |
734 | assert(data); | |
735 | ||
92fe133a TG |
736 | if (streq(section, "Network")) { |
737 | /* we are not in an Address section, so treat | |
738 | * this as the special '0' section */ | |
f4859fc7 SS |
739 | r = address_new_static(network, NULL, 0, &n); |
740 | } else | |
741 | r = address_new_static(network, filename, section_line, &n); | |
92fe133a | 742 | |
f579559b TG |
743 | if (r < 0) |
744 | return r; | |
745 | ||
746 | /* Address=address/prefixlen */ | |
747 | ||
748 | /* prefixlen */ | |
749 | e = strchr(rvalue, '/'); | |
750 | if (e) { | |
751 | unsigned i; | |
12ca818f | 752 | |
f579559b TG |
753 | r = safe_atou(e + 1, &i); |
754 | if (r < 0) { | |
12ca818f | 755 | log_syntax(unit, LOG_ERR, filename, line, r, "Prefix length is invalid, ignoring assignment: %s", e + 1); |
f579559b TG |
756 | return 0; |
757 | } | |
758 | ||
759 | n->prefixlen = (unsigned char) i; | |
8cd11a0f | 760 | |
44e7b949 LP |
761 | address = strndupa(rvalue, e - rvalue); |
762 | } else | |
763 | address = rvalue; | |
f579559b | 764 | |
44e7b949 | 765 | r = in_addr_from_string_auto(address, &f, &buffer); |
f579559b | 766 | if (r < 0) { |
12ca818f | 767 | log_syntax(unit, LOG_ERR, filename, line, r, "Address is invalid, ignoring assignment: %s", address); |
f579559b TG |
768 | return 0; |
769 | } | |
770 | ||
a2a85a22 | 771 | if (!e && f == AF_INET) { |
5a941f5f | 772 | r = in4_addr_default_prefixlen(&buffer.in, &n->prefixlen); |
a2a85a22 | 773 | if (r < 0) { |
87ac8d99 | 774 | log_syntax(unit, LOG_ERR, filename, line, r, "Prefix length not specified, and a default one cannot be deduced for '%s', ignoring assignment", address); |
a2a85a22 TG |
775 | return 0; |
776 | } | |
777 | } | |
778 | ||
44e7b949 | 779 | if (n->family != AF_UNSPEC && f != n->family) { |
12ca818f | 780 | log_syntax(unit, LOG_ERR, filename, line, 0, "Address is incompatible, ignoring assignment: %s", address); |
44e7b949 LP |
781 | return 0; |
782 | } | |
783 | ||
784 | n->family = f; | |
785 | ||
786 | if (streq(lvalue, "Address")) | |
787 | n->in_addr = buffer; | |
788 | else | |
789 | n->in_addr_peer = buffer; | |
790 | ||
791 | if (n->family == AF_INET && n->broadcast.s_addr == 0) | |
792 | n->broadcast.s_addr = n->in_addr.in.s_addr | htonl(0xfffffffflu >> n->prefixlen); | |
eb0ea358 | 793 | |
f579559b TG |
794 | n = NULL; |
795 | ||
796 | return 0; | |
797 | } | |
6ae115c1 | 798 | |
d31645ad LP |
799 | int config_parse_label( |
800 | const char *unit, | |
6ae115c1 TG |
801 | const char *filename, |
802 | unsigned line, | |
803 | const char *section, | |
804 | unsigned section_line, | |
805 | const char *lvalue, | |
806 | int ltype, | |
807 | const char *rvalue, | |
808 | void *data, | |
809 | void *userdata) { | |
d31645ad | 810 | |
6ae115c1 | 811 | _cleanup_address_free_ Address *n = NULL; |
d31645ad | 812 | Network *network = userdata; |
6ae115c1 TG |
813 | int r; |
814 | ||
815 | assert(filename); | |
816 | assert(section); | |
817 | assert(lvalue); | |
818 | assert(rvalue); | |
819 | assert(data); | |
820 | ||
f4859fc7 | 821 | r = address_new_static(network, filename, section_line, &n); |
6ae115c1 TG |
822 | if (r < 0) |
823 | return r; | |
824 | ||
a87d19fe SS |
825 | if (!address_label_valid(rvalue)) { |
826 | log_syntax(unit, LOG_ERR, filename, line, 0, "Interface label is too long or invalid, ignoring assignment: %s", rvalue); | |
6ae115c1 TG |
827 | return 0; |
828 | } | |
829 | ||
d31645ad LP |
830 | r = free_and_strdup(&n->label, rvalue); |
831 | if (r < 0) | |
832 | return log_oom(); | |
6ae115c1 TG |
833 | |
834 | n = NULL; | |
835 | ||
836 | return 0; | |
837 | } | |
ce6c77eb | 838 | |
b5834a0b SS |
839 | int config_parse_lifetime(const char *unit, |
840 | const char *filename, | |
841 | unsigned line, | |
842 | const char *section, | |
843 | unsigned section_line, | |
844 | const char *lvalue, | |
845 | int ltype, | |
846 | const char *rvalue, | |
847 | void *data, | |
848 | void *userdata) { | |
849 | Network *network = userdata; | |
850 | _cleanup_address_free_ Address *n = NULL; | |
851 | unsigned k; | |
852 | int r; | |
853 | ||
854 | assert(filename); | |
855 | assert(section); | |
856 | assert(lvalue); | |
857 | assert(rvalue); | |
858 | assert(data); | |
859 | ||
f4859fc7 | 860 | r = address_new_static(network, filename, section_line, &n); |
b5834a0b SS |
861 | if (r < 0) |
862 | return r; | |
863 | ||
864 | if (STR_IN_SET(rvalue, "forever", "infinity")) { | |
865 | n->cinfo.ifa_prefered = CACHE_INFO_INFINITY_LIFE_TIME; | |
866 | n = NULL; | |
867 | ||
868 | return 0; | |
869 | } | |
870 | ||
871 | r = safe_atou(rvalue, &k); | |
872 | if (r < 0) { | |
873 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse PreferredLifetime, ignoring: %s", rvalue); | |
874 | return 0; | |
875 | } | |
876 | ||
877 | if (k != 0) | |
878 | log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid PreferredLifetime value, ignoring: %d", k); | |
879 | else { | |
880 | n->cinfo.ifa_prefered = k; | |
881 | n = NULL; | |
882 | } | |
883 | ||
884 | return 0; | |
885 | } | |
886 | ||
e63be084 SS |
887 | int config_parse_address_flags(const char *unit, |
888 | const char *filename, | |
889 | unsigned line, | |
890 | const char *section, | |
891 | unsigned section_line, | |
892 | const char *lvalue, | |
893 | int ltype, | |
894 | const char *rvalue, | |
895 | void *data, | |
896 | void *userdata) { | |
897 | Network *network = userdata; | |
898 | _cleanup_address_free_ Address *n = NULL; | |
899 | int r; | |
900 | ||
901 | assert(filename); | |
902 | assert(section); | |
903 | assert(lvalue); | |
904 | assert(rvalue); | |
905 | assert(data); | |
906 | ||
f4859fc7 | 907 | r = address_new_static(network, filename, section_line, &n); |
e63be084 SS |
908 | if (r < 0) |
909 | return r; | |
910 | ||
911 | r = parse_boolean(rvalue); | |
912 | if (r < 0) { | |
913 | log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse address flag, ignoring: %s", rvalue); | |
914 | return 0; | |
915 | } | |
916 | ||
917 | if (streq(lvalue, "HomeAddress")) | |
918 | n->home_address = r; | |
919 | else if (streq(lvalue, "DuplicateAddressDetection")) | |
920 | n->duplicate_address_detection = r; | |
921 | else if (streq(lvalue, "ManageTemporaryAddress")) | |
922 | n->manage_temporary_address = r; | |
923 | else if (streq(lvalue, "PrefixRoute")) | |
924 | n->prefix_route = r; | |
925 | else if (streq(lvalue, "AutoJoin")) | |
926 | n->autojoin = r; | |
927 | ||
928 | return 0; | |
929 | } | |
930 | ||
2959fb07 SS |
931 | int config_parse_address_scope(const char *unit, |
932 | const char *filename, | |
933 | unsigned line, | |
934 | const char *section, | |
935 | unsigned section_line, | |
936 | const char *lvalue, | |
937 | int ltype, | |
938 | const char *rvalue, | |
939 | void *data, | |
940 | void *userdata) { | |
941 | Network *network = userdata; | |
942 | _cleanup_address_free_ Address *n = NULL; | |
943 | int r; | |
944 | ||
945 | assert(filename); | |
946 | assert(section); | |
947 | assert(lvalue); | |
948 | assert(rvalue); | |
949 | assert(data); | |
950 | ||
951 | r = address_new_static(network, filename, section_line, &n); | |
952 | if (r < 0) | |
953 | return r; | |
954 | ||
955 | if (streq(rvalue, "host")) | |
956 | n->scope = RT_SCOPE_HOST; | |
957 | else if (streq(rvalue, "link")) | |
958 | n->scope = RT_SCOPE_LINK; | |
959 | else if (streq(rvalue, "global")) | |
960 | n->scope = RT_SCOPE_UNIVERSE; | |
961 | else { | |
962 | r = safe_atou8(rvalue , &n->scope); | |
963 | if (r < 0) { | |
964 | log_syntax(unit, LOG_ERR, filename, line, r, "Could not parse address scope \"%s\", ignoring assignment: %m", rvalue); | |
965 | return 0; | |
966 | } | |
967 | } | |
968 | ||
969 | n = NULL; | |
970 | ||
971 | return 0; | |
972 | } | |
973 | ||
ce6c77eb TG |
974 | bool address_is_ready(const Address *a) { |
975 | assert(a); | |
976 | ||
b7ed5384 SS |
977 | if (a->family == AF_INET6) |
978 | return !(a->flags & IFA_F_TENTATIVE); | |
979 | else | |
980 | return !(a->flags & (IFA_F_TENTATIVE | IFA_F_DEPRECATED)); | |
ce6c77eb | 981 | } |