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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
f579559b TG |
2 | |
3 | #include <net/if.h> | |
b8162cd2 | 4 | #include <net/if_arp.h> |
f579559b | 5 | |
b5efdb8a | 6 | #include "alloc-util.h" |
12c2884c | 7 | #include "firewall-util.h" |
0a970718 | 8 | #include "memory-util.h" |
fc2f9534 | 9 | #include "netlink-util.h" |
bfbf150e | 10 | #include "networkd-address-pool.h" |
6bedfcbb | 11 | #include "networkd-address.h" |
3b6a3bde | 12 | #include "networkd-dhcp-server.h" |
76a86ffd | 13 | #include "networkd-ipv4acd.h" |
23f53b99 | 14 | #include "networkd-manager.h" |
093e3533 | 15 | #include "networkd-network.h" |
76c5a0f2 | 16 | #include "networkd-queue.h" |
3b6a3bde | 17 | #include "networkd-route.h" |
6bedfcbb | 18 | #include "parse-util.h" |
07630cea | 19 | #include "string-util.h" |
51517f9e | 20 | #include "strv.h" |
0fd97a25 | 21 | #include "strxcpyx.h" |
f579559b | 22 | |
1b566071 | 23 | #define ADDRESSES_PER_LINK_MAX 2048U |
8c34b963 LP |
24 | #define STATIC_ADDRESSES_PER_NETWORK_MAX 1024U |
25 | ||
a2362484 YW |
26 | static int address_flags_to_string_alloc(uint32_t flags, int family, char **ret) { |
27 | _cleanup_free_ char *str = NULL; | |
28 | static const struct { | |
29 | uint32_t flag; | |
30 | const char *name; | |
31 | } map[] = { | |
32 | { IFA_F_SECONDARY, "secondary" }, /* This is also called "temporary" for ipv6. */ | |
33 | { IFA_F_NODAD, "nodad" }, | |
34 | { IFA_F_OPTIMISTIC, "optimistic" }, | |
35 | { IFA_F_DADFAILED, "dadfailed" }, | |
36 | { IFA_F_HOMEADDRESS, "home-address" }, | |
37 | { IFA_F_DEPRECATED, "deprecated" }, | |
38 | { IFA_F_TENTATIVE, "tentative" }, | |
39 | { IFA_F_PERMANENT, "permanent" }, | |
40 | { IFA_F_MANAGETEMPADDR, "manage-temporary-address" }, | |
41 | { IFA_F_NOPREFIXROUTE, "no-prefixroute" }, | |
42 | { IFA_F_MCAUTOJOIN, "auto-join" }, | |
43 | { IFA_F_STABLE_PRIVACY, "stable-privacy" }, | |
44 | }; | |
45 | ||
46 | assert(IN_SET(family, AF_INET, AF_INET6)); | |
47 | assert(ret); | |
48 | ||
0828a386 YW |
49 | for (size_t i = 0; i < ELEMENTSOF(map); i++) |
50 | if (flags & map[i].flag && | |
51 | !strextend_with_separator( | |
52 | &str, ",", | |
53 | map[i].flag == IFA_F_SECONDARY && family == AF_INET6 ? "temporary" : map[i].name)) | |
54 | return -ENOMEM; | |
a2362484 YW |
55 | |
56 | *ret = TAKE_PTR(str); | |
57 | return 0; | |
58 | } | |
59 | ||
b1476b52 | 60 | int generate_ipv6_eui_64_address(const Link *link, struct in6_addr *ret) { |
5ead5352 SS |
61 | assert(link); |
62 | assert(ret); | |
63 | ||
b8162cd2 TR |
64 | if (link->iftype == ARPHRD_INFINIBAND) { |
65 | /* see RFC4391 section 8 */ | |
ca2b7cd8 | 66 | memcpy(&ret->s6_addr[8], &link->hw_addr.infiniband[12], 8); |
b8162cd2 TR |
67 | ret->s6_addr[8] ^= 1 << 1; |
68 | ||
69 | return 0; | |
70 | } | |
71 | ||
5ead5352 | 72 | /* see RFC4291 section 2.5.1 */ |
ca2b7cd8 | 73 | ret->s6_addr[8] = link->hw_addr.ether.ether_addr_octet[0]; |
5ead5352 | 74 | ret->s6_addr[8] ^= 1 << 1; |
ca2b7cd8 YW |
75 | ret->s6_addr[9] = link->hw_addr.ether.ether_addr_octet[1]; |
76 | ret->s6_addr[10] = link->hw_addr.ether.ether_addr_octet[2]; | |
5ead5352 SS |
77 | ret->s6_addr[11] = 0xff; |
78 | ret->s6_addr[12] = 0xfe; | |
ca2b7cd8 YW |
79 | ret->s6_addr[13] = link->hw_addr.ether.ether_addr_octet[3]; |
80 | ret->s6_addr[14] = link->hw_addr.ether.ether_addr_octet[4]; | |
81 | ret->s6_addr[15] = link->hw_addr.ether.ether_addr_octet[5]; | |
5ead5352 SS |
82 | |
83 | return 0; | |
84 | } | |
85 | ||
f0213e37 | 86 | int address_new(Address **ret) { |
8e766630 | 87 | _cleanup_(address_freep) Address *address = NULL; |
f0213e37 | 88 | |
17f9c355 | 89 | address = new(Address, 1); |
f0213e37 TG |
90 | if (!address) |
91 | return -ENOMEM; | |
aba496a5 | 92 | |
17f9c355 YW |
93 | *address = (Address) { |
94 | .family = AF_UNSPEC, | |
95 | .scope = RT_SCOPE_UNIVERSE, | |
96 | .cinfo.ifa_prefered = CACHE_INFO_INFINITY_LIFE_TIME, | |
97 | .cinfo.ifa_valid = CACHE_INFO_INFINITY_LIFE_TIME, | |
832583ad | 98 | .set_broadcast = -1, |
051e77ca | 99 | .duplicate_address_detection = ADDRESS_FAMILY_IPV6, |
17f9c355 | 100 | }; |
f0213e37 | 101 | |
1cc6c93a | 102 | *ret = TAKE_PTR(address); |
f0213e37 TG |
103 | |
104 | return 0; | |
aba496a5 UTL |
105 | } |
106 | ||
9560e5b3 | 107 | static int address_new_static(Network *network, const char *filename, unsigned section_line, Address **ret) { |
8e766630 LP |
108 | _cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL; |
109 | _cleanup_(address_freep) Address *address = NULL; | |
f0213e37 | 110 | int r; |
f579559b | 111 | |
8c34b963 LP |
112 | assert(network); |
113 | assert(ret); | |
9cd9fc8f YW |
114 | assert(filename); |
115 | assert(section_line > 0); | |
f4859fc7 | 116 | |
9cd9fc8f YW |
117 | r = network_config_section_new(filename, section_line, &n); |
118 | if (r < 0) | |
119 | return r; | |
6ae115c1 | 120 | |
9cd9fc8f YW |
121 | address = ordered_hashmap_get(network->addresses_by_section, n); |
122 | if (address) { | |
123 | *ret = TAKE_PTR(address); | |
124 | return 0; | |
6ae115c1 TG |
125 | } |
126 | ||
9cd9fc8f | 127 | if (ordered_hashmap_size(network->addresses_by_section) >= STATIC_ADDRESSES_PER_NETWORK_MAX) |
8c34b963 LP |
128 | return -E2BIG; |
129 | ||
f0213e37 TG |
130 | r = address_new(&address); |
131 | if (r < 0) | |
132 | return r; | |
801bd9e8 | 133 | |
0f7f2769 | 134 | address->network = network; |
9cd9fc8f | 135 | address->section = TAKE_PTR(n); |
3b6a3bde | 136 | address->source = NETWORK_CONFIG_SOURCE_STATIC; |
0f7f2769 | 137 | |
28d9587b | 138 | r = ordered_hashmap_ensure_put(&network->addresses_by_section, &network_config_hash_ops, address->section, address); |
9cd9fc8f YW |
139 | if (r < 0) |
140 | return r; | |
6ae115c1 | 141 | |
1cc6c93a | 142 | *ret = TAKE_PTR(address); |
f579559b TG |
143 | return 0; |
144 | } | |
145 | ||
7818f858 | 146 | Address *address_free(Address *address) { |
f579559b | 147 | if (!address) |
7818f858 | 148 | return NULL; |
f579559b | 149 | |
f048a16b | 150 | if (address->network) { |
9cd9fc8f YW |
151 | assert(address->section); |
152 | ordered_hashmap_remove(address->network->addresses_by_section, address->section); | |
f048a16b | 153 | } |
6ae115c1 | 154 | |
490ccbd5 | 155 | if (address->link) { |
cf1d700d | 156 | set_remove(address->link->addresses, address); |
f150100a | 157 | |
94876904 YW |
158 | if (address->family == AF_INET6 && |
159 | in6_addr_equal(&address->in_addr.in6, &address->link->ipv6ll_address)) | |
f150100a | 160 | memzero(&address->link->ipv6ll_address, sizeof(struct in6_addr)); |
adda1ed9 | 161 | } |
cf1d700d | 162 | |
051e77ca SS |
163 | sd_ipv4acd_unref(address->acd); |
164 | ||
de4224aa YW |
165 | network_config_section_free(address->section); |
166 | free(address->label); | |
7818f858 | 167 | return mfree(address); |
f579559b TG |
168 | } |
169 | ||
3b6a3bde YW |
170 | bool address_is_ready(const Address *a) { |
171 | assert(a); | |
172 | ||
173 | if (FLAGS_SET(a->flags, IFA_F_TENTATIVE)) | |
174 | return false; | |
175 | ||
176 | if (FLAGS_SET(a->state, NETWORK_CONFIG_STATE_REMOVING)) | |
177 | return false; | |
178 | ||
179 | if (FLAGS_SET(a->state, NETWORK_CONFIG_STATE_PROBING)) | |
180 | return false; | |
181 | ||
182 | if (!FLAGS_SET(a->state, NETWORK_CONFIG_STATE_CONFIGURED)) | |
183 | return false; | |
184 | ||
185 | return true; | |
186 | } | |
187 | ||
188 | void link_mark_addresses(Link *link, NetworkConfigSource source, const struct in6_addr *router) { | |
189 | Address *a; | |
190 | ||
191 | assert(link); | |
192 | ||
193 | SET_FOREACH(a, link->addresses) { | |
194 | if (a->source != source) | |
195 | continue; | |
196 | ||
197 | if (source == NETWORK_CONFIG_SOURCE_NDISC && | |
198 | router && !in6_addr_equal(router, &a->provider.in6)) | |
199 | continue; | |
200 | ||
201 | address_mark(a); | |
202 | } | |
203 | } | |
204 | ||
2a236f9f YW |
205 | static bool address_may_have_broadcast(const Address *a) { |
206 | assert(a); | |
207 | ||
473680be YW |
208 | if (a->family != AF_INET) |
209 | return false; | |
210 | ||
211 | if (in4_addr_is_set(&a->in_addr_peer.in)) | |
212 | return false; | |
213 | ||
2a236f9f YW |
214 | /* A /31 or /32 IPv4 address does not have a broadcast address. |
215 | * See https://tools.ietf.org/html/rfc3021 */ | |
473680be YW |
216 | if (a->prefixlen > 30) |
217 | return false; | |
218 | ||
219 | if (a->set_broadcast >= 0) | |
220 | return a->set_broadcast; | |
2a236f9f | 221 | |
473680be YW |
222 | return true; /* Defaults to true. */ |
223 | } | |
224 | ||
225 | void address_set_broadcast(Address *a) { | |
226 | assert(a); | |
227 | ||
228 | if (!address_may_have_broadcast(a)) | |
229 | return; | |
2a236f9f | 230 | |
473680be YW |
231 | /* If explicitly configured, do not update the address. */ |
232 | if (in4_addr_is_set(&a->broadcast)) | |
233 | return; | |
234 | ||
235 | /* If Address= is 0.0.0.0, then the broadcast address will be set later in address_acquire(). */ | |
236 | if (in4_addr_is_null(&a->in_addr.in)) | |
237 | return; | |
238 | ||
239 | a->broadcast.s_addr = a->in_addr.in.s_addr | htobe32(UINT32_C(0xffffffff) >> a->prefixlen); | |
2a236f9f YW |
240 | } |
241 | ||
832583ad YW |
242 | static bool address_may_set_broadcast(const Address *a, const Link *link) { |
243 | assert(a); | |
244 | assert(link); | |
245 | ||
246 | if (!address_may_have_broadcast(a)) | |
247 | return false; | |
248 | ||
832583ad YW |
249 | /* Typical configuration for wireguard does not set broadcast. */ |
250 | return !streq_ptr(link->kind, "wireguard"); | |
251 | } | |
252 | ||
1d30fc5c YW |
253 | static uint32_t address_prefix(const Address *a) { |
254 | assert(a); | |
255 | ||
256 | /* make sure we don't try to shift by 32. | |
257 | * See ISO/IEC 9899:TC3 § 6.5.7.3. */ | |
258 | if (a->prefixlen == 0) | |
259 | return 0; | |
260 | ||
261 | if (a->in_addr_peer.in.s_addr != 0) | |
262 | return be32toh(a->in_addr_peer.in.s_addr) >> (32 - a->prefixlen); | |
263 | else | |
264 | return be32toh(a->in_addr.in.s_addr) >> (32 - a->prefixlen); | |
265 | } | |
266 | ||
99a28784 | 267 | void address_hash_func(const Address *a, struct siphash *state) { |
3ac8e543 TG |
268 | assert(a); |
269 | ||
270 | siphash24_compress(&a->family, sizeof(a->family), state); | |
271 | ||
1d30fc5c YW |
272 | switch (a->family) { |
273 | case AF_INET: | |
274 | siphash24_compress(&a->prefixlen, sizeof(a->prefixlen), state); | |
3ac8e543 | 275 | |
1d30fc5c YW |
276 | uint32_t prefix = address_prefix(a); |
277 | siphash24_compress(&prefix, sizeof(prefix), state); | |
3ac8e543 | 278 | |
1d30fc5c YW |
279 | _fallthrough_; |
280 | case AF_INET6: | |
281 | siphash24_compress(&a->in_addr, FAMILY_ADDRESS_SIZE(a->family), state); | |
282 | break; | |
283 | default: | |
284 | /* treat any other address family as AF_UNSPEC */ | |
285 | break; | |
286 | } | |
3ac8e543 TG |
287 | } |
288 | ||
99a28784 | 289 | int address_compare_func(const Address *a1, const Address *a2) { |
a0edd02e | 290 | int r; |
3ac8e543 | 291 | |
a0edd02e FB |
292 | r = CMP(a1->family, a2->family); |
293 | if (r != 0) | |
294 | return r; | |
3ac8e543 | 295 | |
1d30fc5c YW |
296 | switch (a1->family) { |
297 | case AF_INET: | |
298 | /* See kernel's find_matching_ifa() in net/ipv4/devinet.c */ | |
299 | r = CMP(a1->prefixlen, a2->prefixlen); | |
24be9181 ZJS |
300 | if (r != 0) |
301 | return r; | |
3ac8e543 | 302 | |
1d30fc5c YW |
303 | r = CMP(address_prefix(a1), address_prefix(a2)); |
304 | if (r != 0) | |
305 | return r; | |
2a236f9f | 306 | |
1d30fc5c YW |
307 | _fallthrough_; |
308 | case AF_INET6: | |
309 | /* See kernel's ipv6_get_ifaddr() in net/ipv6/addrconf.c */ | |
310 | return memcmp(&a1->in_addr, &a2->in_addr, FAMILY_ADDRESS_SIZE(a1->family)); | |
311 | default: | |
312 | /* treat any other address family as AF_UNSPEC */ | |
313 | return 0; | |
314 | } | |
3ac8e543 TG |
315 | } |
316 | ||
8eec0b9d | 317 | DEFINE_HASH_OPS_WITH_KEY_DESTRUCTOR(address_hash_ops, Address, address_hash_func, address_compare_func, address_free); |
3ac8e543 | 318 | |
99b46669 YW |
319 | int address_dup(const Address *src, Address **ret) { |
320 | _cleanup_(address_freep) Address *dest = NULL; | |
cde1f0e8 YW |
321 | int r; |
322 | ||
cde1f0e8 | 323 | assert(src); |
99b46669 YW |
324 | assert(ret); |
325 | ||
326 | dest = newdup(Address, src, 1); | |
327 | if (!dest) | |
328 | return -ENOMEM; | |
329 | ||
330 | /* clear all pointers */ | |
331 | dest->network = NULL; | |
332 | dest->section = NULL; | |
333 | dest->link = NULL; | |
334 | dest->label = NULL; | |
335 | dest->acd = NULL; | |
cde1f0e8 | 336 | |
2a236f9f YW |
337 | if (src->family == AF_INET) { |
338 | r = free_and_strdup(&dest->label, src->label); | |
339 | if (r < 0) | |
340 | return r; | |
341 | } | |
cde1f0e8 | 342 | |
99b46669 | 343 | *ret = TAKE_PTR(dest); |
cde1f0e8 YW |
344 | return 0; |
345 | } | |
346 | ||
494b6b43 YW |
347 | static int address_set_masquerade(Address *address, bool add) { |
348 | union in_addr_union masked; | |
91b5f997 TG |
349 | int r; |
350 | ||
351 | assert(address); | |
494b6b43 | 352 | assert(address->link); |
91b5f997 | 353 | |
494b6b43 YW |
354 | if (!address->link->network) |
355 | return 0; | |
91b5f997 | 356 | |
48ed2766 FW |
357 | if (address->family == AF_INET && |
358 | !FLAGS_SET(address->link->network->ip_masquerade, ADDRESS_FAMILY_IPV4)) | |
494b6b43 | 359 | return 0; |
91b5f997 | 360 | |
48ed2766 FW |
361 | if (address->family == AF_INET6 && |
362 | !FLAGS_SET(address->link->network->ip_masquerade, ADDRESS_FAMILY_IPV6)) | |
494b6b43 | 363 | return 0; |
91b5f997 | 364 | |
494b6b43 YW |
365 | if (address->scope >= RT_SCOPE_LINK) |
366 | return 0; | |
367 | ||
da0e2bae | 368 | if (address->ip_masquerade_done == add) |
494b6b43 YW |
369 | return 0; |
370 | ||
371 | masked = address->in_addr; | |
372 | r = in_addr_mask(address->family, &masked, address->prefixlen); | |
373 | if (r < 0) | |
374 | return r; | |
375 | ||
48ed2766 | 376 | r = fw_add_masquerade(&address->link->manager->fw_ctx, add, address->family, &masked, address->prefixlen); |
494b6b43 YW |
377 | if (r < 0) |
378 | return r; | |
379 | ||
da0e2bae | 380 | address->ip_masquerade_done = add; |
91b5f997 TG |
381 | |
382 | return 0; | |
383 | } | |
384 | ||
3b6a3bde | 385 | static int address_add(Link *link, Address *address) { |
cf1d700d TG |
386 | int r; |
387 | ||
388 | assert(link); | |
3b6a3bde | 389 | assert(address); |
cf1d700d | 390 | |
3b6a3bde | 391 | r = set_ensure_put(&link->addresses, &address_hash_ops, address); |
cf1d700d TG |
392 | if (r < 0) |
393 | return r; | |
75a302b5 YW |
394 | if (r == 0) |
395 | return -EEXIST; | |
cf1d700d TG |
396 | |
397 | address->link = link; | |
7b3a7581 | 398 | return 0; |
adda1ed9 TG |
399 | } |
400 | ||
fe841414 | 401 | static int address_update(Address *address, const Address *src) { |
2c40a889 | 402 | Link *link; |
e7ab854c | 403 | int r; |
36c32f61 TG |
404 | |
405 | assert(address); | |
ea121d8f | 406 | assert(address->link); |
36c32f61 | 407 | |
2c40a889 | 408 | link = address->link; |
3b6a3bde YW |
409 | if (src) { |
410 | address->flags = src->flags; | |
411 | address->scope = src->scope; | |
412 | address->cinfo = src->cinfo; | |
413 | } | |
36c32f61 | 414 | |
7657ec3e YW |
415 | if (address_is_ready(address) && |
416 | address->family == AF_INET6 && | |
417 | in6_addr_is_link_local(&address->in_addr.in6) && | |
418 | in6_addr_is_null(&link->ipv6ll_address)) { | |
419 | ||
420 | link->ipv6ll_address = address->in_addr.in6; | |
421 | ||
422 | r = link_ipv6ll_gained(link); | |
423 | if (r < 0) | |
424 | return r; | |
425 | } | |
426 | ||
2c40a889 | 427 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
ea121d8f YW |
428 | return 0; |
429 | ||
7a8685ff YW |
430 | r = address_set_masquerade(address, true); |
431 | if (r < 0) | |
432 | return log_link_warning_errno(link, r, "Could not enable IP masquerading: %m"); | |
433 | ||
981fab5d YW |
434 | if (address_is_ready(address) && address->callback) { |
435 | r = address->callback(address); | |
436 | if (r < 0) | |
437 | return r; | |
a3a019e1 | 438 | } |
36c32f61 | 439 | |
981fab5d YW |
440 | link_update_operstate(link, true); |
441 | link_check_ready(link); | |
36c32f61 TG |
442 | return 0; |
443 | } | |
444 | ||
67a58eb3 | 445 | static int address_drop(Address *address) { |
8012cd39 TG |
446 | Link *link; |
447 | bool ready; | |
7750b796 | 448 | int r; |
8012cd39 | 449 | |
3b6a3bde YW |
450 | assert(address); |
451 | assert(address->link); | |
91b5f997 | 452 | |
8012cd39 TG |
453 | ready = address_is_ready(address); |
454 | link = address->link; | |
455 | ||
494b6b43 | 456 | r = address_set_masquerade(address, false); |
7750b796 YW |
457 | if (r < 0) |
458 | log_link_warning_errno(link, r, "Failed to disable IP masquerading, ignoring: %m"); | |
459 | ||
3b6a3bde YW |
460 | if (address->state == 0) |
461 | address_free(address); | |
91b5f997 | 462 | |
959f65d3 | 463 | link_update_operstate(link, true); |
84de38c5 | 464 | |
8012cd39 TG |
465 | if (link && !ready) |
466 | link_check_ready(link); | |
467 | ||
91b5f997 TG |
468 | return 0; |
469 | } | |
470 | ||
fe841414 YW |
471 | int address_get(Link *link, const Address *in, Address **ret) { |
472 | Address *existing; | |
91b5f997 | 473 | |
5a8bcb67 | 474 | assert(link); |
fe841414 | 475 | assert(in); |
5a8bcb67 | 476 | |
fe841414 | 477 | existing = set_get(link->addresses, in); |
3b6a3bde YW |
478 | if (!existing) |
479 | return -ENOENT; | |
5a8bcb67 | 480 | |
3b6a3bde YW |
481 | if (ret) |
482 | *ret = existing; | |
483 | return 0; | |
5a8bcb67 LP |
484 | } |
485 | ||
998545a7 | 486 | int link_get_ipv6_address(Link *link, const struct in6_addr *address, Address **ret) { |
c5a0aeb3 YW |
487 | _cleanup_(address_freep) Address *a = NULL; |
488 | int r; | |
5eec0a08 | 489 | |
c5a0aeb3 YW |
490 | assert(link); |
491 | assert(address); | |
5eec0a08 | 492 | |
c5a0aeb3 YW |
493 | r = address_new(&a); |
494 | if (r < 0) | |
495 | return r; | |
5eec0a08 | 496 | |
c5a0aeb3 YW |
497 | /* address_compare_func() only compares the local address for IPv6 case. So, it is enough to |
498 | * set only family and the address. */ | |
499 | a->family = AF_INET6; | |
500 | a->in_addr.in6 = *address; | |
5eec0a08 | 501 | |
998545a7 | 502 | return address_get(link, a, ret); |
5eec0a08 YW |
503 | } |
504 | ||
998545a7 YW |
505 | int link_get_ipv4_address(Link *link, const struct in_addr *address, unsigned char prefixlen, Address **ret) { |
506 | int r; | |
507 | ||
508 | assert(link); | |
509 | assert(address); | |
510 | ||
511 | if (prefixlen != 0) { | |
512 | _cleanup_(address_freep) Address *a = NULL; | |
513 | ||
514 | /* If prefixlen is set, then we can use address_get(). */ | |
515 | ||
516 | r = address_new(&a); | |
517 | if (r < 0) | |
518 | return r; | |
519 | ||
520 | a->family = AF_INET; | |
521 | a->in_addr.in = *address; | |
522 | a->prefixlen = prefixlen; | |
523 | ||
524 | return address_get(link, a, ret); | |
3b6a3bde YW |
525 | } else { |
526 | Address *a; | |
998545a7 | 527 | |
3b6a3bde YW |
528 | SET_FOREACH(a, link->addresses) { |
529 | if (a->family != AF_INET) | |
530 | continue; | |
531 | ||
532 | if (!in4_addr_equal(&a->in_addr.in, address)) | |
533 | continue; | |
534 | ||
535 | if (ret) | |
536 | *ret = a; | |
537 | ||
538 | return 0; | |
539 | } | |
540 | ||
541 | return -ENOENT; | |
542 | } | |
998545a7 YW |
543 | } |
544 | ||
591bd5f3 | 545 | int manager_has_address(Manager *manager, int family, const union in_addr_union *address, bool check_ready) { |
998545a7 | 546 | Address *a; |
591bd5f3 YW |
547 | Link *link; |
548 | int r; | |
549 | ||
550 | assert(manager); | |
551 | assert(IN_SET(family, AF_INET, AF_INET6)); | |
552 | assert(address); | |
553 | ||
998545a7 | 554 | if (family == AF_INET) { |
6eab614d | 555 | HASHMAP_FOREACH(link, manager->links_by_index) |
998545a7 | 556 | if (link_get_ipv4_address(link, &address->in, 0, &a) >= 0) |
3b6a3bde | 557 | return check_ready ? address_is_ready(a) : address_exists(a); |
998545a7 | 558 | } else { |
591bd5f3 | 559 | _cleanup_(address_freep) Address *tmp = NULL; |
591bd5f3 YW |
560 | |
561 | r = address_new(&tmp); | |
562 | if (r < 0) | |
563 | return r; | |
564 | ||
565 | tmp->family = family; | |
566 | tmp->in_addr = *address; | |
567 | ||
6eab614d | 568 | HASHMAP_FOREACH(link, manager->links_by_index) |
591bd5f3 | 569 | if (address_get(link, tmp, &a) >= 0) |
3b6a3bde | 570 | return check_ready ? address_is_ready(a) : address_exists(a); |
591bd5f3 YW |
571 | } |
572 | ||
573 | return false; | |
574 | } | |
575 | ||
a35f3128 | 576 | const char* format_lifetime(char *buf, size_t l, uint32_t lifetime) { |
0fd97a25 | 577 | assert(buf); |
a35f3128 | 578 | assert(l > 4); |
0fd97a25 | 579 | |
a35f3128 ZJS |
580 | if (lifetime == CACHE_INFO_INFINITY_LIFE_TIME) |
581 | return "forever"; | |
0fd97a25 | 582 | |
a35f3128 ZJS |
583 | sprintf(buf, "for "); |
584 | /* format_timespan() never fails */ | |
585 | assert_se(format_timespan(buf + 4, l - 4, lifetime * USEC_PER_SEC, USEC_PER_SEC)); | |
586 | return buf; | |
0fd97a25 YW |
587 | } |
588 | ||
24f50382 | 589 | static void log_address_debug(const Address *address, const char *str, const Link *link) { |
3b6a3bde | 590 | _cleanup_free_ char *state = NULL, *addr = NULL, *peer = NULL, *flags_str = NULL; |
7653a9dc | 591 | |
24f50382 YW |
592 | assert(address); |
593 | assert(str); | |
594 | assert(link); | |
595 | ||
7653a9dc YW |
596 | if (!DEBUG_LOGGING) |
597 | return; | |
598 | ||
3b6a3bde | 599 | (void) network_config_state_to_string_alloc(address->state, &state); |
7653a9dc | 600 | (void) in_addr_to_string(address->family, &address->in_addr, &addr); |
fa3f917a | 601 | if (in_addr_is_set(address->family, &address->in_addr_peer)) |
7653a9dc YW |
602 | (void) in_addr_to_string(address->family, &address->in_addr_peer, &peer); |
603 | ||
a2362484 YW |
604 | (void) address_flags_to_string_alloc(address->flags, address->family, &flags_str); |
605 | ||
3b6a3bde YW |
606 | log_link_debug(link, "%s %s address (%s): %s%s%s/%u (valid %s, preferred %s), flags: %s", |
607 | str, strna(network_config_source_to_string(address->source)), strna(state), | |
608 | strnull(addr), peer ? " peer " : "", strempty(peer), address->prefixlen, | |
0fd97a25 YW |
609 | FORMAT_LIFETIME(address->cinfo.ifa_valid), |
610 | FORMAT_LIFETIME(address->cinfo.ifa_prefered), | |
a2362484 | 611 | strna(flags_str)); |
24f50382 YW |
612 | } |
613 | ||
a8481354 | 614 | static int address_set_netlink_message(const Address *address, sd_netlink_message *req, Link *link) { |
d5e3b3eb | 615 | uint32_t flags; |
a8481354 YW |
616 | int r; |
617 | ||
618 | assert(address); | |
619 | assert(req); | |
620 | assert(link); | |
621 | ||
622 | r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen); | |
623 | if (r < 0) | |
624 | return log_link_error_errno(link, r, "Could not set prefixlen: %m"); | |
625 | ||
626 | /* On remove, only IFA_F_MANAGETEMPADDR flag for IPv6 addresses are used. But anyway, set all | |
d5e3b3eb YW |
627 | * flags except tentative flag here unconditionally. Without setting the flag, the template |
628 | * addresses generated by kernel will not be removed automatically when the main address is | |
629 | * removed. */ | |
630 | flags = address->flags & ~IFA_F_TENTATIVE; | |
631 | r = sd_rtnl_message_addr_set_flags(req, flags & 0xff); | |
a8481354 YW |
632 | if (r < 0) |
633 | return log_link_error_errno(link, r, "Could not set flags: %m"); | |
634 | ||
d5e3b3eb YW |
635 | if ((flags & ~0xff) != 0) { |
636 | r = sd_netlink_message_append_u32(req, IFA_FLAGS, flags); | |
a8481354 YW |
637 | if (r < 0) |
638 | return log_link_error_errno(link, r, "Could not set extended flags: %m"); | |
639 | } | |
640 | ||
641 | r = netlink_message_append_in_addr_union(req, IFA_LOCAL, address->family, &address->in_addr); | |
642 | if (r < 0) | |
643 | return log_link_error_errno(link, r, "Could not append IFA_LOCAL attribute: %m"); | |
644 | ||
645 | return 0; | |
646 | } | |
647 | ||
f4cc1364 | 648 | static int address_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
5a07fa9d YW |
649 | int r; |
650 | ||
5a07fa9d YW |
651 | assert(m); |
652 | assert(link); | |
76c5a0f2 | 653 | |
5a07fa9d YW |
654 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
655 | return 0; | |
656 | ||
657 | r = sd_netlink_message_get_errno(m); | |
658 | if (r < 0 && r != -EADDRNOTAVAIL) | |
f4cc1364 | 659 | log_link_message_warning_errno(link, m, r, "Could not drop address"); |
5a07fa9d YW |
660 | |
661 | return 1; | |
662 | } | |
663 | ||
3b6a3bde | 664 | int address_remove(Address *address) { |
4afd3348 | 665 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
3b6a3bde | 666 | Link *link; |
407fe036 TG |
667 | int r; |
668 | ||
669 | assert(address); | |
4c701096 | 670 | assert(IN_SET(address->family, AF_INET, AF_INET6)); |
3b6a3bde YW |
671 | assert(address->link); |
672 | assert(address->link->ifindex > 0); | |
673 | assert(address->link->manager); | |
674 | assert(address->link->manager->rtnl); | |
675 | ||
676 | link = address->link; | |
407fe036 | 677 | |
24f50382 | 678 | log_address_debug(address, "Removing", link); |
30226d27 | 679 | |
151b9b96 LP |
680 | r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_DELADDR, |
681 | link->ifindex, address->family); | |
eb56eb9b | 682 | if (r < 0) |
7750b796 | 683 | return log_link_error_errno(link, r, "Could not allocate RTM_DELADDR message: %m"); |
407fe036 | 684 | |
a8481354 | 685 | r = address_set_netlink_message(address, req, link); |
eb56eb9b | 686 | if (r < 0) |
a8481354 | 687 | return r; |
407fe036 | 688 | |
302a796f | 689 | r = netlink_call_async(link->manager->rtnl, NULL, req, |
f4cc1364 | 690 | address_remove_handler, |
302a796f | 691 | link_netlink_destroy_callback, link); |
eb56eb9b | 692 | if (r < 0) |
7750b796 | 693 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); |
407fe036 | 694 | |
563c69c6 TG |
695 | link_ref(link); |
696 | ||
3b6a3bde | 697 | address_enter_removing(address); |
407fe036 TG |
698 | return 0; |
699 | } | |
700 | ||
3def8850 | 701 | bool link_address_is_dynamic(const Link *link, const Address *address) { |
f8f2f880 YW |
702 | Route *route; |
703 | ||
704 | assert(link); | |
705 | assert(address); | |
706 | ||
707 | if (address->cinfo.ifa_prefered != CACHE_INFO_INFINITY_LIFE_TIME) | |
708 | return true; | |
709 | ||
710 | /* Even when the address is leased from a DHCP server, networkd assign the address | |
711 | * without lifetime when KeepConfiguration=dhcp. So, let's check that we have | |
712 | * corresponding routes with RTPROT_DHCP. */ | |
3b6a3bde YW |
713 | SET_FOREACH(route, link->routes) { |
714 | if (route->source != NETWORK_CONFIG_SOURCE_FOREIGN) | |
715 | continue; | |
716 | ||
f8f2f880 YW |
717 | if (route->protocol != RTPROT_DHCP) |
718 | continue; | |
719 | ||
720 | if (address->family != route->family) | |
721 | continue; | |
722 | ||
723 | if (in_addr_equal(address->family, &address->in_addr, &route->prefsrc)) | |
724 | return true; | |
725 | } | |
726 | ||
727 | return false; | |
728 | } | |
729 | ||
b9bf3f22 | 730 | int link_drop_ipv6ll_addresses(Link *link) { |
51f5dfd8 | 731 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; |
51f5dfd8 YW |
732 | int r; |
733 | ||
734 | assert(link); | |
735 | assert(link->manager); | |
736 | assert(link->manager->rtnl); | |
737 | ||
b9bf3f22 YW |
738 | /* IPv6LL address may be in the tentative state, and in that case networkd has not received it. |
739 | * So, we need to dump all IPv6 addresses. */ | |
740 | ||
741 | if (link_ipv6ll_enabled(link)) | |
742 | return 0; | |
743 | ||
c31298be | 744 | r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_GETADDR, link->ifindex, AF_INET6); |
51f5dfd8 YW |
745 | if (r < 0) |
746 | return r; | |
747 | ||
f318f643 YW |
748 | r = sd_netlink_message_request_dump(req, true); |
749 | if (r < 0) | |
750 | return r; | |
751 | ||
51f5dfd8 YW |
752 | r = sd_netlink_call(link->manager->rtnl, req, 0, &reply); |
753 | if (r < 0) | |
754 | return r; | |
755 | ||
cda7fc8d | 756 | for (sd_netlink_message *addr = reply; addr; addr = sd_netlink_message_next(addr)) { |
b9bf3f22 YW |
757 | _cleanup_(address_freep) Address *a = NULL; |
758 | unsigned char flags, prefixlen; | |
759 | struct in6_addr address; | |
3b6a3bde | 760 | Address *existing; |
51f5dfd8 YW |
761 | int ifindex; |
762 | ||
c31298be YW |
763 | /* NETLINK_GET_STRICT_CHK socket option is supported since kernel 4.20. To support |
764 | * older kernels, we need to check ifindex here. */ | |
51f5dfd8 YW |
765 | r = sd_rtnl_message_addr_get_ifindex(addr, &ifindex); |
766 | if (r < 0) { | |
b9bf3f22 | 767 | log_link_debug_errno(link, r, "rtnl: received address message without valid ifindex, ignoring: %m"); |
51f5dfd8 YW |
768 | continue; |
769 | } else if (link->ifindex != ifindex) | |
770 | continue; | |
771 | ||
772 | r = sd_rtnl_message_addr_get_flags(addr, &flags); | |
773 | if (r < 0) { | |
b9bf3f22 YW |
774 | log_link_debug_errno(link, r, "rtnl: received address message without valid flags, ignoring: %m"); |
775 | continue; | |
776 | } | |
777 | ||
778 | r = sd_rtnl_message_addr_get_prefixlen(addr, &prefixlen); | |
779 | if (r < 0) { | |
780 | log_link_debug_errno(link, r, "rtnl: received address message without prefixlen, ignoring: %m"); | |
51f5dfd8 | 781 | continue; |
b9bf3f22 YW |
782 | } |
783 | ||
784 | if (sd_netlink_message_read_in6_addr(addr, IFA_LOCAL, NULL) >= 0) | |
785 | /* address with peer, ignoring. */ | |
51f5dfd8 YW |
786 | continue; |
787 | ||
b9bf3f22 YW |
788 | r = sd_netlink_message_read_in6_addr(addr, IFA_ADDRESS, &address); |
789 | if (r < 0) { | |
790 | log_link_debug_errno(link, r, "rtnl: received address message without valid address, ignoring: %m"); | |
791 | continue; | |
792 | } | |
793 | ||
794 | if (!in6_addr_is_link_local(&address)) | |
795 | continue; | |
796 | ||
797 | r = address_new(&a); | |
798 | if (r < 0) | |
799 | return -ENOMEM; | |
800 | ||
801 | a->family = AF_INET6; | |
802 | a->in_addr.in6 = address; | |
803 | a->prefixlen = prefixlen; | |
804 | a->flags = flags; | |
805 | ||
3b6a3bde YW |
806 | if (address_get(link, a, &existing) < 0) { |
807 | r = address_add(link, a); | |
808 | if (r < 0) | |
809 | return r; | |
810 | ||
811 | existing = TAKE_PTR(a); | |
812 | } | |
813 | ||
814 | r = address_remove(existing); | |
b9bf3f22 YW |
815 | if (r < 0) |
816 | return r; | |
51f5dfd8 YW |
817 | } |
818 | ||
819 | return 0; | |
820 | } | |
821 | ||
f8f2f880 YW |
822 | int link_drop_foreign_addresses(Link *link) { |
823 | Address *address; | |
824 | int k, r = 0; | |
825 | ||
826 | assert(link); | |
3b6a3bde | 827 | assert(link->network); |
f8f2f880 | 828 | |
3b6a3bde YW |
829 | /* First, mark all addresses. */ |
830 | SET_FOREACH(address, link->addresses) { | |
b9bf3f22 | 831 | /* We consider IPv6LL addresses to be managed by the kernel, or dropped in link_drop_ipv6ll_addresses() */ |
ecedc48b | 832 | if (address->family == AF_INET6 && in6_addr_is_link_local(&address->in_addr.in6)) |
f8f2f880 YW |
833 | continue; |
834 | ||
3b6a3bde YW |
835 | /* Ignore addresses we configured. */ |
836 | if (address->source != NETWORK_CONFIG_SOURCE_FOREIGN) | |
837 | continue; | |
838 | ||
839 | /* Ignore addresses not assigned yet or already removing. */ | |
840 | if (!address_exists(address)) | |
841 | continue; | |
842 | ||
f8f2f880 YW |
843 | if (link_address_is_dynamic(link, address)) { |
844 | if (link->network && FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_DHCP)) | |
845 | continue; | |
846 | } else if (link->network && FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_STATIC)) | |
847 | continue; | |
848 | ||
3b6a3bde YW |
849 | address_mark(address); |
850 | } | |
851 | ||
852 | /* Then, unmark requested addresses. */ | |
853 | ORDERED_HASHMAP_FOREACH(address, link->network->addresses_by_section) { | |
854 | Address *existing; | |
855 | ||
856 | if (address_get(link, address, &existing) >= 0) | |
857 | address_unmark(existing); | |
858 | } | |
859 | ||
860 | /* Finally, remove all marked addresses. */ | |
861 | SET_FOREACH(address, link->addresses) { | |
862 | if (!address_is_marked(address)) | |
863 | continue; | |
864 | ||
865 | k = address_remove(address); | |
866 | if (k < 0 && r >= 0) | |
867 | r = k; | |
f8f2f880 YW |
868 | } |
869 | ||
870 | return r; | |
871 | } | |
872 | ||
d7fbb9f5 | 873 | int link_drop_addresses(Link *link) { |
3b6a3bde | 874 | Address *address; |
d7fbb9f5 YW |
875 | int k, r = 0; |
876 | ||
877 | assert(link); | |
878 | ||
879 | SET_FOREACH(address, link->addresses) { | |
3b6a3bde YW |
880 | /* Ignore addresses not assigned yet or already removing. */ |
881 | if (!address_exists(address)) | |
882 | continue; | |
883 | ||
ecedc48b YW |
884 | /* We consider IPv6LL addresses to be managed by the kernel, or dropped in link_drop_ipv6ll_addresses() */ |
885 | if (address->family == AF_INET6 && in6_addr_is_link_local(&address->in_addr.in6)) | |
d7fbb9f5 YW |
886 | continue; |
887 | ||
3b6a3bde | 888 | k = address_remove(address); |
d7fbb9f5 YW |
889 | if (k < 0 && r >= 0) { |
890 | r = k; | |
891 | continue; | |
892 | } | |
d7fbb9f5 YW |
893 | } |
894 | ||
895 | return r; | |
896 | } | |
897 | ||
693ec5ca | 898 | static int address_acquire(Link *link, const Address *original, Address **ret) { |
8e766630 | 899 | _cleanup_(address_freep) Address *na = NULL; |
3b6a3bde | 900 | union in_addr_union in_addr; |
11bf3cce LP |
901 | int r; |
902 | ||
903 | assert(link); | |
904 | assert(original); | |
905 | assert(ret); | |
906 | ||
907 | /* Something useful was configured? just use it */ | |
94876904 | 908 | if (in_addr_is_set(original->family, &original->in_addr)) { |
aa651e88 YW |
909 | *ret = NULL; |
910 | return 0; | |
911 | } | |
11bf3cce LP |
912 | |
913 | /* The address is configured to be 0.0.0.0 or [::] by the user? | |
914 | * Then let's acquire something more useful from the pool. */ | |
ed76f585 | 915 | r = address_pool_acquire(link->manager, original->family, original->prefixlen, &in_addr); |
6a7a4e4d | 916 | if (r < 0) |
7750b796 YW |
917 | return r; |
918 | if (r == 0) | |
11bf3cce | 919 | return -EBUSY; |
11bf3cce | 920 | |
473680be YW |
921 | /* Pick first address in range for ourselves. */ |
922 | if (original->family == AF_INET) | |
11bf3cce | 923 | in_addr.in.s_addr = in_addr.in.s_addr | htobe32(1); |
473680be | 924 | else if (original->family == AF_INET6) |
11bf3cce LP |
925 | in_addr.in6.s6_addr[15] |= 1; |
926 | ||
99b46669 | 927 | r = address_dup(original, &na); |
cde1f0e8 YW |
928 | if (r < 0) |
929 | return r; | |
11bf3cce | 930 | |
11bf3cce | 931 | na->in_addr = in_addr; |
473680be | 932 | address_set_broadcast(na); |
11bf3cce | 933 | |
1cc6c93a | 934 | *ret = TAKE_PTR(na); |
aa651e88 | 935 | return 1; |
11bf3cce LP |
936 | } |
937 | ||
5a07fa9d YW |
938 | int address_configure_handler_internal(sd_netlink *rtnl, sd_netlink_message *m, Link *link, const char *error_msg) { |
939 | int r; | |
940 | ||
941 | assert(rtnl); | |
942 | assert(m); | |
943 | assert(link); | |
944 | assert(error_msg); | |
945 | ||
946 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
947 | return 0; | |
948 | ||
949 | r = sd_netlink_message_get_errno(m); | |
950 | if (r < 0 && r != -EEXIST) { | |
951 | log_link_message_warning_errno(link, m, r, error_msg); | |
952 | link_enter_failed(link); | |
953 | return 0; | |
3a1dfdb4 | 954 | } |
5a07fa9d YW |
955 | |
956 | return 1; | |
957 | } | |
958 | ||
76c5a0f2 | 959 | static int address_configure( |
b1476b52 | 960 | const Address *address, |
1b566071 | 961 | Link *link, |
c0c04a4b | 962 | link_netlink_message_handler_t callback) { |
1b566071 | 963 | |
4afd3348 | 964 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
7b3a7581 | 965 | int r; |
f579559b | 966 | |
c166a070 | 967 | assert(address); |
4c701096 | 968 | assert(IN_SET(address->family, AF_INET, AF_INET6)); |
c166a070 TG |
969 | assert(link); |
970 | assert(link->ifindex > 0); | |
f882c247 | 971 | assert(link->manager); |
c166a070 | 972 | assert(link->manager->rtnl); |
bd1175bc | 973 | assert(callback); |
f882c247 | 974 | |
c0c04a4b | 975 | log_address_debug(address, "Configuring", link); |
1b566071 | 976 | |
c0c04a4b YW |
977 | r = sd_rtnl_message_new_addr_update(link->manager->rtnl, &req, |
978 | link->ifindex, address->family); | |
eb56eb9b | 979 | if (r < 0) |
7750b796 | 980 | return log_link_error_errno(link, r, "Could not allocate RTM_NEWADDR message: %m"); |
f579559b | 981 | |
a8481354 | 982 | r = address_set_netlink_message(address, req, link); |
eb56eb9b | 983 | if (r < 0) |
a8481354 | 984 | return r; |
851c9f82 | 985 | |
5c1d3fc9 | 986 | r = sd_rtnl_message_addr_set_scope(req, address->scope); |
eb56eb9b | 987 | if (r < 0) |
7750b796 | 988 | return log_link_error_errno(link, r, "Could not set scope: %m"); |
5a723174 | 989 | |
94876904 | 990 | if (in_addr_is_set(address->family, &address->in_addr_peer)) { |
43409486 | 991 | r = netlink_message_append_in_addr_union(req, IFA_ADDRESS, address->family, &address->in_addr_peer); |
eb56eb9b | 992 | if (r < 0) |
7750b796 | 993 | return log_link_error_errno(link, r, "Could not append IFA_ADDRESS attribute: %m"); |
832583ad | 994 | } else if (address_may_set_broadcast(address, link)) { |
66e0bb33 YW |
995 | r = sd_netlink_message_append_in_addr(req, IFA_BROADCAST, &address->broadcast); |
996 | if (r < 0) | |
7750b796 | 997 | return log_link_error_errno(link, r, "Could not append IFA_BROADCAST attribute: %m"); |
f579559b TG |
998 | } |
999 | ||
2a236f9f | 1000 | if (address->family == AF_INET && address->label) { |
1c4baffc | 1001 | r = sd_netlink_message_append_string(req, IFA_LABEL, address->label); |
eb56eb9b | 1002 | if (r < 0) |
7750b796 | 1003 | return log_link_error_errno(link, r, "Could not append IFA_LABEL attribute: %m"); |
f579559b TG |
1004 | } |
1005 | ||
66e0bb33 | 1006 | r = sd_netlink_message_append_cache_info(req, IFA_CACHEINFO, &address->cinfo); |
eb56eb9b | 1007 | if (r < 0) |
7750b796 | 1008 | return log_link_error_errno(link, r, "Could not append IFA_CACHEINFO attribute: %m"); |
68ceb9df | 1009 | |
c4ff0629 YW |
1010 | r = sd_netlink_message_append_u32(req, IFA_RT_PRIORITY, address->route_metric); |
1011 | if (r < 0) | |
1012 | return log_link_error_errno(link, r, "Could not append IFA_RT_PRIORITY attribute: %m"); | |
1013 | ||
dfef713f | 1014 | r = netlink_call_async(link->manager->rtnl, NULL, req, callback, link_netlink_destroy_callback, link); |
c0c04a4b | 1015 | if (r < 0) |
7750b796 | 1016 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); |
f579559b | 1017 | |
563c69c6 | 1018 | link_ref(link); |
7b3a7581 | 1019 | return 0; |
f579559b TG |
1020 | } |
1021 | ||
3b6a3bde YW |
1022 | void address_cancel_request(Address *address) { |
1023 | Request req; | |
1024 | ||
1025 | assert(address); | |
1026 | assert(address->link); | |
1027 | ||
1028 | if (!address_is_requesting(address)) | |
1029 | return; | |
1030 | ||
1031 | req = (Request) { | |
1032 | .link = address->link, | |
1033 | .type = REQUEST_TYPE_ADDRESS, | |
1034 | .address = address, | |
1035 | }; | |
1036 | ||
1037 | request_drop(ordered_set_get(address->link->manager->request_queue, &req)); | |
1038 | address_cancel_requesting(address); | |
1039 | } | |
1040 | ||
76c5a0f2 | 1041 | static int static_address_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
682c65b0 YW |
1042 | int r; |
1043 | ||
682c65b0 | 1044 | assert(link); |
76c5a0f2 | 1045 | assert(link->static_address_messages > 0); |
682c65b0 | 1046 | |
76c5a0f2 | 1047 | link->static_address_messages--; |
682c65b0 | 1048 | |
5a07fa9d YW |
1049 | r = address_configure_handler_internal(rtnl, m, link, "Failed to set static address"); |
1050 | if (r <= 0) | |
1051 | return r; | |
682c65b0 | 1052 | |
76c5a0f2 | 1053 | if (link->static_address_messages == 0) { |
682c65b0 | 1054 | log_link_debug(link, "Addresses set"); |
76c5a0f2 YW |
1055 | link->static_addresses_configured = true; |
1056 | link_check_ready(link); | |
682c65b0 YW |
1057 | } |
1058 | ||
1059 | return 1; | |
1060 | } | |
1061 | ||
76c5a0f2 YW |
1062 | int link_request_address( |
1063 | Link *link, | |
1064 | Address *address, | |
1065 | bool consume_object, | |
1066 | unsigned *message_counter, | |
1067 | link_netlink_message_handler_t netlink_handler, | |
1068 | Request **ret) { | |
1069 | ||
3b6a3bde | 1070 | Address *acquired, *existing; |
c0c04a4b YW |
1071 | int r; |
1072 | ||
76c5a0f2 YW |
1073 | assert(link); |
1074 | assert(address); | |
3b6a3bde | 1075 | assert(address->source != NETWORK_CONFIG_SOURCE_FOREIGN); |
76c5a0f2 | 1076 | |
c0c04a4b YW |
1077 | r = address_acquire(link, address, &acquired); |
1078 | if (r < 0) | |
1079 | return log_link_warning_errno(link, r, "Failed to acquire an address from pool: %m"); | |
1080 | if (r > 0) { | |
3b6a3bde | 1081 | if (consume_object) |
c0c04a4b | 1082 | address_free(address); |
3b6a3bde | 1083 | |
c0c04a4b | 1084 | address = acquired; |
3b6a3bde YW |
1085 | consume_object = true; |
1086 | } | |
1087 | ||
1088 | if (address_get(link, address, &existing) < 0) { | |
1089 | _cleanup_(address_freep) Address *tmp = NULL; | |
1090 | ||
1091 | r = address_dup(address, &tmp); | |
1092 | if (r < 0) | |
1093 | return r; | |
1094 | ||
1095 | /* Consider address tentative until we get the real flags from the kernel */ | |
1096 | tmp->flags |= IFA_F_TENTATIVE; | |
1097 | ||
1098 | r = address_add(link, tmp); | |
1099 | if (r < 0) | |
1100 | return r; | |
1101 | ||
1102 | existing = TAKE_PTR(tmp); | |
1103 | } else { | |
1104 | existing->source = address->source; | |
1105 | existing->provider = address->provider; | |
c0c04a4b YW |
1106 | } |
1107 | ||
3b6a3bde YW |
1108 | r = ipv4acd_configure(existing); |
1109 | if (r < 0) | |
1110 | return r; | |
1111 | ||
76c5a0f2 | 1112 | log_address_debug(address, "Requesting", link); |
c0c04a4b YW |
1113 | r = link_queue_request(link, REQUEST_TYPE_ADDRESS, address, consume_object, |
1114 | message_counter, netlink_handler, ret); | |
1115 | if (r < 0) | |
1116 | return log_link_warning_errno(link, r, "Failed to request address: %m"); | |
3b6a3bde YW |
1117 | if (r == 0) |
1118 | return 0; | |
1119 | ||
1120 | address_enter_requesting(existing); | |
1121 | ||
1122 | return 1; | |
76c5a0f2 YW |
1123 | } |
1124 | ||
8c29f484 | 1125 | int link_request_static_address(Link *link, Address *address, bool consume) { |
8c29f484 YW |
1126 | assert(link); |
1127 | assert(address); | |
3b6a3bde | 1128 | assert(address->source == NETWORK_CONFIG_SOURCE_STATIC); |
8c29f484 | 1129 | |
3b6a3bde YW |
1130 | return link_request_address(link, address, consume, &link->static_address_messages, |
1131 | static_address_handler, NULL); | |
8c29f484 YW |
1132 | } |
1133 | ||
76c5a0f2 YW |
1134 | int link_request_static_addresses(Link *link) { |
1135 | Address *a; | |
682c65b0 YW |
1136 | int r; |
1137 | ||
1138 | assert(link); | |
1139 | assert(link->network); | |
1140 | ||
76c5a0f2 | 1141 | link->static_addresses_configured = false; |
682c65b0 | 1142 | |
76c5a0f2 | 1143 | ORDERED_HASHMAP_FOREACH(a, link->network->addresses_by_section) { |
8c29f484 | 1144 | r = link_request_static_address(link, a, false); |
682c65b0 YW |
1145 | if (r < 0) |
1146 | return r; | |
1147 | } | |
1148 | ||
3b6a3bde YW |
1149 | r = link_request_radv_addresses(link); |
1150 | if (r < 0) | |
1151 | return r; | |
0017ba31 | 1152 | |
3b6a3bde YW |
1153 | r = link_request_dhcp_server_address(link); |
1154 | if (r < 0) | |
1155 | return r; | |
0017ba31 | 1156 | |
76c5a0f2 YW |
1157 | if (link->static_address_messages == 0) { |
1158 | link->static_addresses_configured = true; | |
1159 | link_check_ready(link); | |
682c65b0 YW |
1160 | } else { |
1161 | log_link_debug(link, "Setting addresses"); | |
1162 | link_set_state(link, LINK_STATE_CONFIGURING); | |
1163 | } | |
1164 | ||
1165 | return 0; | |
1166 | } | |
1167 | ||
3b6a3bde | 1168 | static bool address_is_ready_to_configure(Link *link, const Address *address) { |
c0c04a4b YW |
1169 | assert(link); |
1170 | assert(address); | |
1171 | ||
1172 | if (!link_is_ready_to_configure(link, false)) | |
1173 | return false; | |
1174 | ||
3b6a3bde | 1175 | if (FLAGS_SET(address->state, NETWORK_CONFIG_STATE_PROBING)) |
c0c04a4b YW |
1176 | return false; |
1177 | ||
3b6a3bde | 1178 | /* Refuse adding more than the limit */ |
c0c04a4b | 1179 | if (set_size(link->addresses) >= ADDRESSES_PER_LINK_MAX) |
3b6a3bde | 1180 | return false; |
c0c04a4b YW |
1181 | |
1182 | return true; | |
1183 | } | |
1184 | ||
76c5a0f2 | 1185 | int request_process_address(Request *req) { |
3b6a3bde | 1186 | Address *existing; |
c0c04a4b | 1187 | Link *link; |
76c5a0f2 YW |
1188 | int r; |
1189 | ||
1190 | assert(req); | |
1191 | assert(req->link); | |
1192 | assert(req->address); | |
1193 | assert(req->type == REQUEST_TYPE_ADDRESS); | |
1194 | ||
c0c04a4b | 1195 | link = req->link; |
76c5a0f2 | 1196 | |
3b6a3bde | 1197 | r = address_get(link, req->address, &existing); |
76c5a0f2 | 1198 | if (r < 0) |
3b6a3bde | 1199 | return log_link_warning_errno(link, r, "Failed to get address: %m"); |
76c5a0f2 | 1200 | |
3b6a3bde YW |
1201 | if (!address_is_ready_to_configure(link, existing)) |
1202 | return 0; | |
ce9388d7 | 1203 | |
3b6a3bde | 1204 | r = address_configure(req->address, link, req->netlink_handler); |
2d302d88 | 1205 | if (r < 0) |
3b6a3bde | 1206 | return log_link_warning_errno(link, r, "Failed to configure address: %m"); |
2d302d88 | 1207 | |
3b6a3bde | 1208 | address_enter_configuring(existing); |
76c5a0f2 YW |
1209 | |
1210 | return 1; | |
1211 | } | |
1212 | ||
e1fc2c43 | 1213 | int manager_rtnl_process_address(sd_netlink *rtnl, sd_netlink_message *message, Manager *m) { |
fe841414 | 1214 | _cleanup_(address_freep) Address *tmp = NULL; |
e1fc2c43 YW |
1215 | Link *link = NULL; |
1216 | uint16_t type; | |
e1fc2c43 | 1217 | Address *address = NULL; |
fe841414 | 1218 | int ifindex, r; |
e1fc2c43 YW |
1219 | |
1220 | assert(rtnl); | |
1221 | assert(message); | |
1222 | assert(m); | |
1223 | ||
1224 | if (sd_netlink_message_is_error(message)) { | |
1225 | r = sd_netlink_message_get_errno(message); | |
1226 | if (r < 0) | |
1227 | log_message_warning_errno(message, r, "rtnl: failed to receive address message, ignoring"); | |
1228 | ||
1229 | return 0; | |
1230 | } | |
1231 | ||
1232 | r = sd_netlink_message_get_type(message, &type); | |
1233 | if (r < 0) { | |
1234 | log_warning_errno(r, "rtnl: could not get message type, ignoring: %m"); | |
1235 | return 0; | |
1236 | } else if (!IN_SET(type, RTM_NEWADDR, RTM_DELADDR)) { | |
1237 | log_warning("rtnl: received unexpected message type %u when processing address, ignoring.", type); | |
1238 | return 0; | |
1239 | } | |
1240 | ||
1241 | r = sd_rtnl_message_addr_get_ifindex(message, &ifindex); | |
1242 | if (r < 0) { | |
1243 | log_warning_errno(r, "rtnl: could not get ifindex from message, ignoring: %m"); | |
1244 | return 0; | |
1245 | } else if (ifindex <= 0) { | |
1246 | log_warning("rtnl: received address message with invalid ifindex %d, ignoring.", ifindex); | |
1247 | return 0; | |
1248 | } | |
1249 | ||
6eab614d | 1250 | r = link_get_by_index(m, ifindex, &link); |
e1fc2c43 YW |
1251 | if (r < 0 || !link) { |
1252 | /* when enumerating we might be out of sync, but we will get the address again, so just | |
1253 | * ignore it */ | |
1254 | if (!m->enumerating) | |
1255 | log_warning("rtnl: received address for link '%d' we don't know about, ignoring.", ifindex); | |
1256 | return 0; | |
1257 | } | |
1258 | ||
fe841414 YW |
1259 | r = address_new(&tmp); |
1260 | if (r < 0) | |
1261 | return log_oom(); | |
1262 | ||
1263 | r = sd_rtnl_message_addr_get_family(message, &tmp->family); | |
e1fc2c43 YW |
1264 | if (r < 0) { |
1265 | log_link_warning(link, "rtnl: received address message without family, ignoring."); | |
1266 | return 0; | |
fe841414 YW |
1267 | } else if (!IN_SET(tmp->family, AF_INET, AF_INET6)) { |
1268 | log_link_debug(link, "rtnl: received address message with invalid family '%i', ignoring.", tmp->family); | |
e1fc2c43 YW |
1269 | return 0; |
1270 | } | |
1271 | ||
fe841414 | 1272 | r = sd_rtnl_message_addr_get_prefixlen(message, &tmp->prefixlen); |
e1fc2c43 | 1273 | if (r < 0) { |
9a0ad16b | 1274 | log_link_warning_errno(link, r, "rtnl: received address message without prefixlen, ignoring: %m"); |
e1fc2c43 YW |
1275 | return 0; |
1276 | } | |
1277 | ||
fe841414 | 1278 | r = sd_rtnl_message_addr_get_scope(message, &tmp->scope); |
e1fc2c43 | 1279 | if (r < 0) { |
9a0ad16b | 1280 | log_link_warning_errno(link, r, "rtnl: received address message without scope, ignoring: %m"); |
e1fc2c43 YW |
1281 | return 0; |
1282 | } | |
1283 | ||
0828a386 | 1284 | r = sd_netlink_message_read_u32(message, IFA_FLAGS, &tmp->flags); |
e1fc2c43 | 1285 | if (r < 0) { |
9a0ad16b | 1286 | log_link_warning_errno(link, r, "rtnl: received address message without flags, ignoring: %m"); |
e1fc2c43 YW |
1287 | return 0; |
1288 | } | |
1289 | ||
fe841414 | 1290 | switch (tmp->family) { |
e1fc2c43 | 1291 | case AF_INET: |
fe841414 | 1292 | r = sd_netlink_message_read_in_addr(message, IFA_LOCAL, &tmp->in_addr.in); |
e1fc2c43 YW |
1293 | if (r < 0) { |
1294 | log_link_warning_errno(link, r, "rtnl: received address message without valid address, ignoring: %m"); | |
1295 | return 0; | |
1296 | } | |
1297 | ||
fe841414 YW |
1298 | r = sd_netlink_message_read_in_addr(message, IFA_ADDRESS, &tmp->in_addr_peer.in); |
1299 | if (r < 0 && r != -ENODATA) { | |
1300 | log_link_warning_errno(link, r, "rtnl: could not get peer address from address message, ignoring: %m"); | |
1301 | return 0; | |
1302 | } else if (r >= 0) { | |
1303 | if (in4_addr_equal(&tmp->in_addr.in, &tmp->in_addr_peer.in)) | |
1304 | tmp->in_addr_peer = IN_ADDR_NULL; | |
fe841414 YW |
1305 | } |
1306 | ||
1307 | r = sd_netlink_message_read_in_addr(message, IFA_BROADCAST, &tmp->broadcast); | |
1308 | if (r < 0 && r != -ENODATA) { | |
1309 | log_link_warning_errno(link, r, "rtnl: could not get broadcast from address message, ignoring: %m"); | |
1310 | return 0; | |
1311 | } | |
1312 | ||
1313 | r = sd_netlink_message_read_string_strdup(message, IFA_LABEL, &tmp->label); | |
1314 | if (r < 0 && r != -ENODATA) { | |
1315 | log_link_warning_errno(link, r, "rtnl: could not get label from address message, ignoring: %m"); | |
1316 | return 0; | |
1317 | } else if (r >= 0 && streq_ptr(tmp->label, link->ifname)) | |
1318 | tmp->label = mfree(tmp->label); | |
1319 | ||
e1fc2c43 YW |
1320 | break; |
1321 | ||
1322 | case AF_INET6: | |
fe841414 YW |
1323 | r = sd_netlink_message_read_in6_addr(message, IFA_LOCAL, &tmp->in_addr.in6); |
1324 | if (r >= 0) { | |
1325 | /* Have peer address. */ | |
1326 | r = sd_netlink_message_read_in6_addr(message, IFA_ADDRESS, &tmp->in_addr_peer.in6); | |
1327 | if (r < 0) { | |
1328 | log_link_warning_errno(link, r, "rtnl: could not get peer address from address message, ignoring: %m"); | |
1329 | return 0; | |
1330 | } | |
fe841414 YW |
1331 | } else if (r == -ENODATA) { |
1332 | /* Does not have peer address. */ | |
1333 | r = sd_netlink_message_read_in6_addr(message, IFA_ADDRESS, &tmp->in_addr.in6); | |
1334 | if (r < 0) { | |
1335 | log_link_warning_errno(link, r, "rtnl: received address message without valid address, ignoring: %m"); | |
1336 | return 0; | |
1337 | } | |
1338 | } else { | |
1339 | log_link_warning_errno(link, r, "rtnl: could not get local address from address message, ignoring: %m"); | |
e1fc2c43 YW |
1340 | return 0; |
1341 | } | |
1342 | ||
1343 | break; | |
1344 | ||
1345 | default: | |
04499a70 | 1346 | assert_not_reached(); |
e1fc2c43 YW |
1347 | } |
1348 | ||
fe841414 | 1349 | r = sd_netlink_message_read_cache_info(message, IFA_CACHEINFO, &tmp->cinfo); |
e1fc2c43 YW |
1350 | if (r < 0 && r != -ENODATA) { |
1351 | log_link_warning_errno(link, r, "rtnl: cannot get IFA_CACHEINFO attribute, ignoring: %m"); | |
1352 | return 0; | |
24f50382 | 1353 | } |
e1fc2c43 | 1354 | |
fe841414 | 1355 | (void) address_get(link, tmp, &address); |
e1fc2c43 YW |
1356 | |
1357 | switch (type) { | |
1358 | case RTM_NEWADDR: | |
3b6a3bde YW |
1359 | if (address) { |
1360 | address_enter_configured(address); | |
1361 | log_address_debug(address, "Remembering updated", link); | |
1362 | } else { | |
1363 | address_enter_configured(tmp); | |
1364 | log_address_debug(tmp, "Received new", link); | |
1365 | ||
1366 | r = address_add(link, tmp); | |
e1fc2c43 | 1367 | if (r < 0) { |
24f50382 YW |
1368 | _cleanup_free_ char *buf = NULL; |
1369 | ||
5380707a YW |
1370 | (void) in_addr_prefix_to_string(tmp->family, &tmp->in_addr, tmp->prefixlen, &buf); |
1371 | log_link_warning_errno(link, r, "Failed to remember foreign address %s, ignoring: %m", | |
1372 | strnull(buf)); | |
e1fc2c43 | 1373 | return 0; |
24f50382 | 1374 | } |
3b6a3bde YW |
1375 | |
1376 | address = TAKE_PTR(tmp); | |
e1fc2c43 YW |
1377 | } |
1378 | ||
1379 | /* address_update() logs internally, so we don't need to here. */ | |
fe841414 | 1380 | r = address_update(address, tmp); |
e1fc2c43 YW |
1381 | if (r < 0) |
1382 | link_enter_failed(link); | |
1383 | ||
1384 | break; | |
1385 | ||
1386 | case RTM_DELADDR: | |
3b6a3bde YW |
1387 | if (address) { |
1388 | address_enter_removed(address); | |
1389 | log_address_debug(address, address->state == 0 ? "Forgetting" : "Removed", link); | |
1390 | (void) address_drop(address); | |
1391 | } else | |
1392 | log_address_debug(tmp, "Kernel removed unknown", link); | |
e1fc2c43 YW |
1393 | |
1394 | break; | |
1395 | ||
1396 | default: | |
04499a70 | 1397 | assert_not_reached(); |
e1fc2c43 YW |
1398 | } |
1399 | ||
1400 | return 1; | |
1401 | } | |
1402 | ||
44e7b949 LP |
1403 | int config_parse_broadcast( |
1404 | const char *unit, | |
eb0ea358 TG |
1405 | const char *filename, |
1406 | unsigned line, | |
1407 | const char *section, | |
1408 | unsigned section_line, | |
1409 | const char *lvalue, | |
1410 | int ltype, | |
1411 | const char *rvalue, | |
1412 | void *data, | |
1413 | void *userdata) { | |
44e7b949 | 1414 | |
eb0ea358 | 1415 | Network *network = userdata; |
fcbf4cb7 | 1416 | _cleanup_(address_free_or_set_invalidp) Address *n = NULL; |
94af46fc | 1417 | union in_addr_union u; |
eb0ea358 TG |
1418 | int r; |
1419 | ||
1420 | assert(filename); | |
1421 | assert(section); | |
1422 | assert(lvalue); | |
1423 | assert(rvalue); | |
1424 | assert(data); | |
1425 | ||
f4859fc7 | 1426 | r = address_new_static(network, filename, section_line, &n); |
d96edb2c YW |
1427 | if (r == -ENOMEM) |
1428 | return log_oom(); | |
1429 | if (r < 0) { | |
1430 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1431 | "Failed to allocate new address, ignoring assignment: %m"); | |
1432 | return 0; | |
1433 | } | |
eb0ea358 | 1434 | |
832583ad YW |
1435 | if (isempty(rvalue)) { |
1436 | /* The broadcast address will be calculated based on Address=, and set if the link is | |
1437 | * not a wireguard interface. Here, we do not check or set n->family. */ | |
1438 | n->broadcast = (struct in_addr) {}; | |
1439 | n->set_broadcast = -1; | |
1440 | TAKE_PTR(n); | |
1441 | return 0; | |
1442 | } | |
1443 | ||
1444 | r = parse_boolean(rvalue); | |
1445 | if (r >= 0) { | |
1446 | /* The broadcast address will be calculated based on Address=. Here, we do not check or | |
1447 | * set n->family. */ | |
1448 | n->broadcast = (struct in_addr) {}; | |
1449 | n->set_broadcast = r; | |
1450 | TAKE_PTR(n); | |
1451 | return 0; | |
1452 | } | |
1453 | ||
482e2ac1 | 1454 | if (n->family == AF_INET6) { |
d96edb2c | 1455 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
2850cd40 | 1456 | "Broadcast is not valid for IPv6 addresses, ignoring assignment: %s", rvalue); |
482e2ac1 TG |
1457 | return 0; |
1458 | } | |
1459 | ||
94af46fc | 1460 | r = in_addr_from_string(AF_INET, rvalue, &u); |
eb0ea358 | 1461 | if (r < 0) { |
d96edb2c | 1462 | log_syntax(unit, LOG_WARNING, filename, line, r, |
2850cd40 | 1463 | "Broadcast is invalid, ignoring assignment: %s", rvalue); |
eb0ea358 TG |
1464 | return 0; |
1465 | } | |
832583ad YW |
1466 | if (in4_addr_is_null(&u.in)) { |
1467 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
1468 | "Broadcast cannot be ANY address, ignoring assignment: %s", rvalue); | |
1469 | return 0; | |
1470 | } | |
eb0ea358 | 1471 | |
94af46fc | 1472 | n->broadcast = u.in; |
832583ad | 1473 | n->set_broadcast = true; |
44e7b949 | 1474 | n->family = AF_INET; |
dea161d9 | 1475 | TAKE_PTR(n); |
eb0ea358 TG |
1476 | |
1477 | return 0; | |
1478 | } | |
1479 | ||
f5ee7d74 YW |
1480 | int config_parse_address( |
1481 | const char *unit, | |
f579559b TG |
1482 | const char *filename, |
1483 | unsigned line, | |
1484 | const char *section, | |
71a61510 | 1485 | unsigned section_line, |
f579559b TG |
1486 | const char *lvalue, |
1487 | int ltype, | |
1488 | const char *rvalue, | |
1489 | void *data, | |
1490 | void *userdata) { | |
44e7b949 | 1491 | |
6ae115c1 | 1492 | Network *network = userdata; |
fcbf4cb7 | 1493 | _cleanup_(address_free_or_set_invalidp) Address *n = NULL; |
44e7b949 | 1494 | union in_addr_union buffer; |
b7cb4452 | 1495 | unsigned char prefixlen; |
44e7b949 | 1496 | int r, f; |
f579559b TG |
1497 | |
1498 | assert(filename); | |
6ae115c1 | 1499 | assert(section); |
f579559b TG |
1500 | assert(lvalue); |
1501 | assert(rvalue); | |
1502 | assert(data); | |
1503 | ||
9cd9fc8f YW |
1504 | if (streq(section, "Network")) |
1505 | /* we are not in an Address section, so use line number instead. */ | |
1506 | r = address_new_static(network, filename, line, &n); | |
1507 | else | |
f4859fc7 | 1508 | r = address_new_static(network, filename, section_line, &n); |
d96edb2c YW |
1509 | if (r == -ENOMEM) |
1510 | return log_oom(); | |
1511 | if (r < 0) { | |
1512 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1513 | "Failed to allocate new address, ignoring assignment: %m"); | |
1514 | return 0; | |
1515 | } | |
f579559b TG |
1516 | |
1517 | /* Address=address/prefixlen */ | |
0f707207 YW |
1518 | r = in_addr_prefix_from_string_auto_internal(rvalue, PREFIXLEN_REFUSE, &f, &buffer, &prefixlen); |
1519 | if (r == -ENOANO) { | |
d96edb2c | 1520 | log_syntax(unit, LOG_WARNING, filename, line, r, |
0f707207 YW |
1521 | "An address '%s' is specified without prefix length. " |
1522 | "The behavior of parsing addresses without prefix length will be changed in the future release. " | |
1523 | "Please specify prefix length explicitly.", rvalue); | |
1524 | ||
1525 | r = in_addr_prefix_from_string_auto_internal(rvalue, PREFIXLEN_LEGACY, &f, &buffer, &prefixlen); | |
1526 | } | |
f579559b | 1527 | if (r < 0) { |
d96edb2c | 1528 | log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid address '%s', ignoring assignment: %m", rvalue); |
f579559b TG |
1529 | return 0; |
1530 | } | |
1531 | ||
44e7b949 | 1532 | if (n->family != AF_UNSPEC && f != n->family) { |
d96edb2c | 1533 | log_syntax(unit, LOG_WARNING, filename, line, 0, "Address is incompatible, ignoring assignment: %s", rvalue); |
44e7b949 LP |
1534 | return 0; |
1535 | } | |
1536 | ||
c9207ff3 YW |
1537 | if (in_addr_is_null(f, &buffer)) { |
1538 | /* Will use address from address pool. Note that for ipv6 case, prefix of the address | |
1539 | * pool is 8, but 40 bit is used by the global ID and 16 bit by the subnet ID. So, | |
1540 | * let's limit the prefix length to 64 or larger. See RFC4193. */ | |
1541 | if ((f == AF_INET && prefixlen < 8) || | |
1542 | (f == AF_INET6 && prefixlen < 64)) { | |
d96edb2c | 1543 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
c9207ff3 YW |
1544 | "Null address with invalid prefixlen='%u', ignoring assignment: %s", |
1545 | prefixlen, rvalue); | |
1546 | return 0; | |
1547 | } | |
1548 | } | |
1549 | ||
44e7b949 | 1550 | n->family = f; |
b7cb4452 | 1551 | n->prefixlen = prefixlen; |
44e7b949 LP |
1552 | |
1553 | if (streq(lvalue, "Address")) | |
1554 | n->in_addr = buffer; | |
1555 | else | |
1556 | n->in_addr_peer = buffer; | |
1557 | ||
dea161d9 | 1558 | TAKE_PTR(n); |
f579559b TG |
1559 | return 0; |
1560 | } | |
6ae115c1 | 1561 | |
d31645ad LP |
1562 | int config_parse_label( |
1563 | const char *unit, | |
6ae115c1 TG |
1564 | const char *filename, |
1565 | unsigned line, | |
1566 | const char *section, | |
1567 | unsigned section_line, | |
1568 | const char *lvalue, | |
1569 | int ltype, | |
1570 | const char *rvalue, | |
1571 | void *data, | |
1572 | void *userdata) { | |
d31645ad | 1573 | |
fcbf4cb7 | 1574 | _cleanup_(address_free_or_set_invalidp) Address *n = NULL; |
d31645ad | 1575 | Network *network = userdata; |
6ae115c1 TG |
1576 | int r; |
1577 | ||
1578 | assert(filename); | |
1579 | assert(section); | |
1580 | assert(lvalue); | |
1581 | assert(rvalue); | |
1582 | assert(data); | |
1583 | ||
f4859fc7 | 1584 | r = address_new_static(network, filename, section_line, &n); |
d96edb2c YW |
1585 | if (r == -ENOMEM) |
1586 | return log_oom(); | |
1587 | if (r < 0) { | |
1588 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1589 | "Failed to allocate new address, ignoring assignment: %m"); | |
1590 | return 0; | |
1591 | } | |
6ae115c1 | 1592 | |
a87d19fe | 1593 | if (!address_label_valid(rvalue)) { |
d96edb2c | 1594 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
2850cd40 | 1595 | "Interface label is too long or invalid, ignoring assignment: %s", rvalue); |
6ae115c1 TG |
1596 | return 0; |
1597 | } | |
1598 | ||
d31645ad LP |
1599 | r = free_and_strdup(&n->label, rvalue); |
1600 | if (r < 0) | |
1601 | return log_oom(); | |
6ae115c1 | 1602 | |
dea161d9 | 1603 | TAKE_PTR(n); |
6ae115c1 TG |
1604 | return 0; |
1605 | } | |
ce6c77eb | 1606 | |
f5ee7d74 YW |
1607 | int config_parse_lifetime( |
1608 | const char *unit, | |
1609 | const char *filename, | |
1610 | unsigned line, | |
1611 | const char *section, | |
1612 | unsigned section_line, | |
1613 | const char *lvalue, | |
1614 | int ltype, | |
1615 | const char *rvalue, | |
1616 | void *data, | |
1617 | void *userdata) { | |
1618 | ||
b5834a0b | 1619 | Network *network = userdata; |
fcbf4cb7 | 1620 | _cleanup_(address_free_or_set_invalidp) Address *n = NULL; |
d2735796 | 1621 | uint32_t k; |
b5834a0b SS |
1622 | int r; |
1623 | ||
1624 | assert(filename); | |
1625 | assert(section); | |
1626 | assert(lvalue); | |
1627 | assert(rvalue); | |
1628 | assert(data); | |
1629 | ||
f4859fc7 | 1630 | r = address_new_static(network, filename, section_line, &n); |
d96edb2c YW |
1631 | if (r == -ENOMEM) |
1632 | return log_oom(); | |
1633 | if (r < 0) { | |
1634 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1635 | "Failed to allocate new address, ignoring assignment: %m"); | |
1636 | return 0; | |
1637 | } | |
b5834a0b | 1638 | |
10b20e5a ZJS |
1639 | /* We accept only "forever", "infinity", empty, or "0". */ |
1640 | if (STR_IN_SET(rvalue, "forever", "infinity", "")) | |
33680b0a YW |
1641 | k = CACHE_INFO_INFINITY_LIFE_TIME; |
1642 | else if (streq(rvalue, "0")) | |
1643 | k = 0; | |
1644 | else { | |
d96edb2c | 1645 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
33680b0a | 1646 | "Invalid PreferredLifetime= value, ignoring: %s", rvalue); |
b5834a0b SS |
1647 | return 0; |
1648 | } | |
1649 | ||
33680b0a | 1650 | n->cinfo.ifa_prefered = k; |
d2735796 | 1651 | TAKE_PTR(n); |
b5834a0b SS |
1652 | |
1653 | return 0; | |
1654 | } | |
1655 | ||
f5ee7d74 YW |
1656 | int config_parse_address_flags( |
1657 | const char *unit, | |
1658 | const char *filename, | |
1659 | unsigned line, | |
1660 | const char *section, | |
1661 | unsigned section_line, | |
1662 | const char *lvalue, | |
1663 | int ltype, | |
1664 | const char *rvalue, | |
1665 | void *data, | |
1666 | void *userdata) { | |
1667 | ||
e63be084 | 1668 | Network *network = userdata; |
fcbf4cb7 | 1669 | _cleanup_(address_free_or_set_invalidp) Address *n = NULL; |
e63be084 SS |
1670 | int r; |
1671 | ||
1672 | assert(filename); | |
1673 | assert(section); | |
1674 | assert(lvalue); | |
1675 | assert(rvalue); | |
1676 | assert(data); | |
1677 | ||
f4859fc7 | 1678 | r = address_new_static(network, filename, section_line, &n); |
d96edb2c YW |
1679 | if (r == -ENOMEM) |
1680 | return log_oom(); | |
1681 | if (r < 0) { | |
1682 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1683 | "Failed to allocate new address, ignoring assignment: %m"); | |
1684 | return 0; | |
1685 | } | |
e63be084 SS |
1686 | |
1687 | r = parse_boolean(rvalue); | |
1688 | if (r < 0) { | |
d96edb2c | 1689 | log_syntax(unit, LOG_WARNING, filename, line, r, |
051e77ca | 1690 | "Failed to parse %s=, ignoring: %s", lvalue, rvalue); |
e63be084 SS |
1691 | return 0; |
1692 | } | |
1693 | ||
eaff204f YW |
1694 | if (streq(lvalue, "AddPrefixRoute")) |
1695 | r = !r; | |
1696 | ||
1697 | SET_FLAG(n->flags, ltype, r); | |
e63be084 | 1698 | |
dea161d9 | 1699 | TAKE_PTR(n); |
e63be084 SS |
1700 | return 0; |
1701 | } | |
1702 | ||
f5ee7d74 YW |
1703 | int config_parse_address_scope( |
1704 | const char *unit, | |
1705 | const char *filename, | |
1706 | unsigned line, | |
1707 | const char *section, | |
1708 | unsigned section_line, | |
1709 | const char *lvalue, | |
1710 | int ltype, | |
1711 | const char *rvalue, | |
1712 | void *data, | |
1713 | void *userdata) { | |
1714 | ||
2959fb07 | 1715 | Network *network = userdata; |
fcbf4cb7 | 1716 | _cleanup_(address_free_or_set_invalidp) Address *n = NULL; |
2959fb07 SS |
1717 | int r; |
1718 | ||
1719 | assert(filename); | |
1720 | assert(section); | |
1721 | assert(lvalue); | |
1722 | assert(rvalue); | |
1723 | assert(data); | |
1724 | ||
1725 | r = address_new_static(network, filename, section_line, &n); | |
d96edb2c YW |
1726 | if (r == -ENOMEM) |
1727 | return log_oom(); | |
1728 | if (r < 0) { | |
1729 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1730 | "Failed to allocate new address, ignoring assignment: %m"); | |
1731 | return 0; | |
1732 | } | |
2959fb07 SS |
1733 | |
1734 | if (streq(rvalue, "host")) | |
1735 | n->scope = RT_SCOPE_HOST; | |
1736 | else if (streq(rvalue, "link")) | |
1737 | n->scope = RT_SCOPE_LINK; | |
1738 | else if (streq(rvalue, "global")) | |
1739 | n->scope = RT_SCOPE_UNIVERSE; | |
1740 | else { | |
1741 | r = safe_atou8(rvalue , &n->scope); | |
1742 | if (r < 0) { | |
d96edb2c | 1743 | log_syntax(unit, LOG_WARNING, filename, line, r, |
2850cd40 | 1744 | "Could not parse address scope \"%s\", ignoring assignment: %m", rvalue); |
2959fb07 SS |
1745 | return 0; |
1746 | } | |
1747 | } | |
1748 | ||
07336a06 | 1749 | n->scope_set = true; |
dea161d9 | 1750 | TAKE_PTR(n); |
2959fb07 SS |
1751 | return 0; |
1752 | } | |
1753 | ||
c4ff0629 YW |
1754 | int config_parse_address_route_metric( |
1755 | const char *unit, | |
1756 | const char *filename, | |
1757 | unsigned line, | |
1758 | const char *section, | |
1759 | unsigned section_line, | |
1760 | const char *lvalue, | |
1761 | int ltype, | |
1762 | const char *rvalue, | |
1763 | void *data, | |
1764 | void *userdata) { | |
1765 | ||
1766 | Network *network = userdata; | |
1767 | _cleanup_(address_free_or_set_invalidp) Address *n = NULL; | |
1768 | int r; | |
1769 | ||
1770 | assert(filename); | |
1771 | assert(section); | |
1772 | assert(lvalue); | |
1773 | assert(rvalue); | |
1774 | assert(data); | |
1775 | ||
1776 | r = address_new_static(network, filename, section_line, &n); | |
1777 | if (r == -ENOMEM) | |
1778 | return log_oom(); | |
1779 | if (r < 0) { | |
1780 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1781 | "Failed to allocate new address, ignoring assignment: %m"); | |
1782 | return 0; | |
1783 | } | |
1784 | ||
1785 | r = safe_atou32(rvalue, &n->route_metric); | |
1786 | if (r < 0) { | |
1787 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1788 | "Could not parse %s=, ignoring assignment: %s", lvalue, rvalue); | |
1789 | return 0; | |
1790 | } | |
1791 | ||
1792 | TAKE_PTR(n); | |
1793 | return 0; | |
1794 | } | |
1795 | ||
051e77ca SS |
1796 | int config_parse_duplicate_address_detection( |
1797 | const char *unit, | |
1798 | const char *filename, | |
1799 | unsigned line, | |
1800 | const char *section, | |
1801 | unsigned section_line, | |
1802 | const char *lvalue, | |
1803 | int ltype, | |
1804 | const char *rvalue, | |
1805 | void *data, | |
1806 | void *userdata) { | |
f5ee7d74 | 1807 | |
051e77ca SS |
1808 | Network *network = userdata; |
1809 | _cleanup_(address_free_or_set_invalidp) Address *n = NULL; | |
051e77ca SS |
1810 | int r; |
1811 | ||
1812 | assert(filename); | |
1813 | assert(section); | |
1814 | assert(lvalue); | |
1815 | assert(rvalue); | |
1816 | assert(data); | |
1817 | ||
1818 | r = address_new_static(network, filename, section_line, &n); | |
d96edb2c YW |
1819 | if (r == -ENOMEM) |
1820 | return log_oom(); | |
1821 | if (r < 0) { | |
1822 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1823 | "Failed to allocate new address, ignoring assignment: %m"); | |
1824 | return 0; | |
1825 | } | |
051e77ca SS |
1826 | |
1827 | r = parse_boolean(rvalue); | |
1828 | if (r >= 0) { | |
1829 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
1830 | "For historical reasons, %s=%s means %s=%s. " | |
1831 | "Please use 'both', 'ipv4', 'ipv6' or 'none' instead.", | |
1832 | lvalue, rvalue, lvalue, r ? "none" : "both"); | |
1833 | n->duplicate_address_detection = r ? ADDRESS_FAMILY_NO : ADDRESS_FAMILY_YES; | |
1834 | n = NULL; | |
1835 | return 0; | |
1836 | } | |
1837 | ||
7211c853 | 1838 | AddressFamily a = duplicate_address_detection_address_family_from_string(rvalue); |
051e77ca | 1839 | if (a < 0) { |
7211c853 | 1840 | log_syntax(unit, LOG_WARNING, filename, line, a, |
051e77ca SS |
1841 | "Failed to parse %s=, ignoring: %s", lvalue, rvalue); |
1842 | return 0; | |
1843 | } | |
051e77ca | 1844 | n->duplicate_address_detection = a; |
7211c853 | 1845 | |
dea161d9 | 1846 | TAKE_PTR(n); |
051e77ca SS |
1847 | return 0; |
1848 | } | |
1849 | ||
32400c2f | 1850 | static int address_section_verify(Address *address) { |
fcbf4cb7 YW |
1851 | if (section_is_invalid(address->section)) |
1852 | return -EINVAL; | |
1853 | ||
1854 | if (address->family == AF_UNSPEC) { | |
1855 | assert(address->section); | |
1856 | ||
1857 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), | |
1858 | "%s: Address section without Address= field configured. " | |
1859 | "Ignoring [Address] section from line %u.", | |
1860 | address->section->filename, address->section->line); | |
1861 | } | |
1862 | ||
473680be YW |
1863 | if (address_may_have_broadcast(address)) |
1864 | address_set_broadcast(address); | |
1865 | else if (address->broadcast.s_addr != 0) { | |
fe841414 YW |
1866 | log_warning("%s: broadcast address is set for IPv6 address or IPv4 address with prefixlength larger than 30. " |
1867 | "Ignoring Broadcast= setting in the [Address] section from line %u.", | |
1868 | address->section->filename, address->section->line); | |
1869 | ||
1870 | address->broadcast.s_addr = 0; | |
1871 | } | |
1872 | ||
1873 | if (address->family == AF_INET6 && address->label) { | |
1874 | log_warning("%s: address label is set for IPv6 address in the [Address] section from line %u. " | |
1875 | "Ignoring Label= setting.", | |
1876 | address->section->filename, address->section->line); | |
1877 | ||
1878 | address->label = mfree(address->label); | |
1879 | } | |
1880 | ||
cd1caf30 YW |
1881 | if (in_addr_is_localhost(address->family, &address->in_addr) > 0 && |
1882 | (address->family == AF_INET || !address->scope_set)) { | |
1883 | /* For IPv4, scope must be always RT_SCOPE_HOST. | |
1884 | * For IPv6, use RT_SCOPE_HOST only when it is not explicitly specified. */ | |
1885 | ||
1886 | if (address->scope_set && address->scope != RT_SCOPE_HOST) | |
1887 | log_warning_errno(SYNTHETIC_ERRNO(EINVAL), | |
1888 | "%s: non-host scope is set in the [Address] section from line %u. " | |
1889 | "Ignoring Scope= setting.", | |
1890 | address->section->filename, address->section->line); | |
1891 | ||
07336a06 | 1892 | address->scope = RT_SCOPE_HOST; |
cd1caf30 | 1893 | } |
07336a06 | 1894 | |
bd5146c6 YW |
1895 | if (address->family == AF_INET6 && |
1896 | !FLAGS_SET(address->duplicate_address_detection, ADDRESS_FAMILY_IPV6)) | |
eaff204f YW |
1897 | address->flags |= IFA_F_NODAD; |
1898 | ||
1cf4ed14 YW |
1899 | if (address->family == AF_INET && in4_addr_is_link_local(&address->in_addr.in) && |
1900 | !FLAGS_SET(address->duplicate_address_detection, ADDRESS_FAMILY_IPV4)) { | |
1901 | log_debug("%s: An IPv4 link-local address is specified, enabling IPv4 Address Conflict Detection (ACD).", | |
1902 | address->section->filename); | |
1903 | address->duplicate_address_detection |= ADDRESS_FAMILY_IPV4; | |
1904 | } | |
1905 | ||
fcbf4cb7 YW |
1906 | return 0; |
1907 | } | |
32400c2f | 1908 | |
13ffa39f | 1909 | void network_drop_invalid_addresses(Network *network) { |
9cd9fc8f | 1910 | Address *address; |
32400c2f YW |
1911 | |
1912 | assert(network); | |
1913 | ||
9cd9fc8f | 1914 | ORDERED_HASHMAP_FOREACH(address, network->addresses_by_section) |
32400c2f YW |
1915 | if (address_section_verify(address) < 0) |
1916 | address_free(address); | |
1917 | } |