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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" |
3ae6b3bf | 8 | #include "logarithm.h" |
0a970718 | 9 | #include "memory-util.h" |
fc2f9534 | 10 | #include "netlink-util.h" |
bfbf150e | 11 | #include "networkd-address-pool.h" |
6bedfcbb | 12 | #include "networkd-address.h" |
3b6a3bde | 13 | #include "networkd-dhcp-server.h" |
76a86ffd | 14 | #include "networkd-ipv4acd.h" |
23f53b99 | 15 | #include "networkd-manager.h" |
4b3590c3 | 16 | #include "networkd-netlabel.h" |
093e3533 | 17 | #include "networkd-network.h" |
76c5a0f2 | 18 | #include "networkd-queue.h" |
d8c472f2 | 19 | #include "networkd-route-util.h" |
3b6a3bde | 20 | #include "networkd-route.h" |
6bedfcbb | 21 | #include "parse-util.h" |
07630cea | 22 | #include "string-util.h" |
51517f9e | 23 | #include "strv.h" |
0fd97a25 | 24 | #include "strxcpyx.h" |
f579559b | 25 | |
1b566071 | 26 | #define ADDRESSES_PER_LINK_MAX 2048U |
8c34b963 LP |
27 | #define STATIC_ADDRESSES_PER_NETWORK_MAX 1024U |
28 | ||
42ceb474 | 29 | int address_flags_to_string_alloc(uint32_t flags, int family, char **ret) { |
a2362484 | 30 | _cleanup_free_ char *str = NULL; |
7396e014 ZJS |
31 | static const char* map[] = { |
32 | [LOG2U(IFA_F_SECONDARY)] = "secondary", /* This is also called "temporary" for ipv6. */ | |
33 | [LOG2U(IFA_F_NODAD)] = "nodad", | |
34 | [LOG2U(IFA_F_OPTIMISTIC)] = "optimistic", | |
35 | [LOG2U(IFA_F_DADFAILED)] = "dadfailed", | |
36 | [LOG2U(IFA_F_HOMEADDRESS)] = "home-address", | |
37 | [LOG2U(IFA_F_DEPRECATED)] = "deprecated", | |
38 | [LOG2U(IFA_F_TENTATIVE)] = "tentative", | |
39 | [LOG2U(IFA_F_PERMANENT)] = "permanent", | |
40 | [LOG2U(IFA_F_MANAGETEMPADDR)] = "manage-temporary-address", | |
41 | [LOG2U(IFA_F_NOPREFIXROUTE)] = "no-prefixroute", | |
42 | [LOG2U(IFA_F_MCAUTOJOIN)] = "auto-join", | |
43 | [LOG2U(IFA_F_STABLE_PRIVACY)] = "stable-privacy", | |
a2362484 YW |
44 | }; |
45 | ||
46 | assert(IN_SET(family, AF_INET, AF_INET6)); | |
47 | assert(ret); | |
48 | ||
0828a386 | 49 | for (size_t i = 0; i < ELEMENTSOF(map); i++) |
7396e014 ZJS |
50 | if (FLAGS_SET(flags, 1 << i) && map[i]) |
51 | if (!strextend_with_separator( | |
52 | &str, ",", | |
53 | family == AF_INET6 && (1 << i) == IFA_F_SECONDARY ? "temporary" : map[i])) | |
54 | return -ENOMEM; | |
a2362484 YW |
55 | |
56 | *ret = TAKE_PTR(str); | |
57 | return 0; | |
58 | } | |
59 | ||
f0213e37 | 60 | int address_new(Address **ret) { |
8e766630 | 61 | _cleanup_(address_freep) Address *address = NULL; |
f0213e37 | 62 | |
17f9c355 | 63 | address = new(Address, 1); |
f0213e37 TG |
64 | if (!address) |
65 | return -ENOMEM; | |
aba496a5 | 66 | |
17f9c355 YW |
67 | *address = (Address) { |
68 | .family = AF_UNSPEC, | |
69 | .scope = RT_SCOPE_UNIVERSE, | |
16bc8635 YW |
70 | .lifetime_valid_usec = USEC_INFINITY, |
71 | .lifetime_preferred_usec = USEC_INFINITY, | |
832583ad | 72 | .set_broadcast = -1, |
17f9c355 | 73 | }; |
f0213e37 | 74 | |
1cc6c93a | 75 | *ret = TAKE_PTR(address); |
f0213e37 TG |
76 | |
77 | return 0; | |
aba496a5 UTL |
78 | } |
79 | ||
9560e5b3 | 80 | static int address_new_static(Network *network, const char *filename, unsigned section_line, Address **ret) { |
307fe3cd | 81 | _cleanup_(config_section_freep) ConfigSection *n = NULL; |
8e766630 | 82 | _cleanup_(address_freep) Address *address = NULL; |
f0213e37 | 83 | int r; |
f579559b | 84 | |
8c34b963 LP |
85 | assert(network); |
86 | assert(ret); | |
9cd9fc8f YW |
87 | assert(filename); |
88 | assert(section_line > 0); | |
f4859fc7 | 89 | |
307fe3cd | 90 | r = config_section_new(filename, section_line, &n); |
9cd9fc8f YW |
91 | if (r < 0) |
92 | return r; | |
6ae115c1 | 93 | |
9cd9fc8f YW |
94 | address = ordered_hashmap_get(network->addresses_by_section, n); |
95 | if (address) { | |
96 | *ret = TAKE_PTR(address); | |
97 | return 0; | |
6ae115c1 TG |
98 | } |
99 | ||
9cd9fc8f | 100 | if (ordered_hashmap_size(network->addresses_by_section) >= STATIC_ADDRESSES_PER_NETWORK_MAX) |
8c34b963 LP |
101 | return -E2BIG; |
102 | ||
f0213e37 TG |
103 | r = address_new(&address); |
104 | if (r < 0) | |
105 | return r; | |
801bd9e8 | 106 | |
0f7f2769 | 107 | address->network = network; |
9cd9fc8f | 108 | address->section = TAKE_PTR(n); |
3b6a3bde | 109 | address->source = NETWORK_CONFIG_SOURCE_STATIC; |
2859932b YW |
110 | /* This will be adjusted in address_section_verify(). */ |
111 | address->duplicate_address_detection = _ADDRESS_FAMILY_INVALID; | |
0f7f2769 | 112 | |
307fe3cd | 113 | r = ordered_hashmap_ensure_put(&network->addresses_by_section, &config_section_hash_ops, address->section, address); |
9cd9fc8f YW |
114 | if (r < 0) |
115 | return r; | |
6ae115c1 | 116 | |
1cc6c93a | 117 | *ret = TAKE_PTR(address); |
f579559b TG |
118 | return 0; |
119 | } | |
120 | ||
7818f858 | 121 | Address *address_free(Address *address) { |
f579559b | 122 | if (!address) |
7818f858 | 123 | return NULL; |
f579559b | 124 | |
f048a16b | 125 | if (address->network) { |
9cd9fc8f YW |
126 | assert(address->section); |
127 | ordered_hashmap_remove(address->network->addresses_by_section, address->section); | |
f048a16b | 128 | } |
6ae115c1 | 129 | |
490ccbd5 | 130 | if (address->link) { |
cf1d700d | 131 | set_remove(address->link->addresses, address); |
f150100a | 132 | |
94876904 YW |
133 | if (address->family == AF_INET6 && |
134 | in6_addr_equal(&address->in_addr.in6, &address->link->ipv6ll_address)) | |
f150100a | 135 | memzero(&address->link->ipv6ll_address, sizeof(struct in6_addr)); |
adda1ed9 | 136 | } |
cf1d700d | 137 | |
051e77ca SS |
138 | sd_ipv4acd_unref(address->acd); |
139 | ||
307fe3cd | 140 | config_section_free(address->section); |
de4224aa | 141 | free(address->label); |
4b3590c3 | 142 | free(address->netlabel); |
7818f858 | 143 | return mfree(address); |
f579559b TG |
144 | } |
145 | ||
3b6a3bde YW |
146 | bool address_is_ready(const Address *a) { |
147 | assert(a); | |
148 | ||
e402e99e | 149 | if (!ipv4acd_bound(a)) |
3b6a3bde YW |
150 | return false; |
151 | ||
e402e99e | 152 | if (FLAGS_SET(a->flags, IFA_F_TENTATIVE)) |
3b6a3bde YW |
153 | return false; |
154 | ||
e402e99e | 155 | if (FLAGS_SET(a->state, NETWORK_CONFIG_STATE_REMOVING)) |
3b6a3bde YW |
156 | return false; |
157 | ||
158 | if (!FLAGS_SET(a->state, NETWORK_CONFIG_STATE_CONFIGURED)) | |
159 | return false; | |
160 | ||
161 | return true; | |
162 | } | |
163 | ||
2ccada8d | 164 | void link_mark_addresses(Link *link, NetworkConfigSource source) { |
3b6a3bde YW |
165 | Address *a; |
166 | ||
167 | assert(link); | |
168 | ||
169 | SET_FOREACH(a, link->addresses) { | |
170 | if (a->source != source) | |
171 | continue; | |
172 | ||
3b6a3bde YW |
173 | address_mark(a); |
174 | } | |
175 | } | |
176 | ||
e680486d | 177 | static bool address_needs_to_set_broadcast(const Address *a, Link *link) { |
2a236f9f | 178 | assert(a); |
e680486d | 179 | assert(link); |
2a236f9f | 180 | |
473680be YW |
181 | if (a->family != AF_INET) |
182 | return false; | |
183 | ||
184 | if (in4_addr_is_set(&a->in_addr_peer.in)) | |
185 | return false; | |
186 | ||
2a236f9f YW |
187 | /* A /31 or /32 IPv4 address does not have a broadcast address. |
188 | * See https://tools.ietf.org/html/rfc3021 */ | |
473680be YW |
189 | if (a->prefixlen > 30) |
190 | return false; | |
191 | ||
473680be YW |
192 | /* If explicitly configured, do not update the address. */ |
193 | if (in4_addr_is_set(&a->broadcast)) | |
e680486d | 194 | return false; |
473680be | 195 | |
e680486d YW |
196 | if (a->set_broadcast >= 0) |
197 | return a->set_broadcast; | |
473680be | 198 | |
e680486d YW |
199 | /* Defaults to true, except for wireguard, as typical configuration for wireguard does not set |
200 | * broadcast. */ | |
201 | return !streq_ptr(link->kind, "wireguard"); | |
2a236f9f YW |
202 | } |
203 | ||
e680486d | 204 | void address_set_broadcast(Address *a, Link *link) { |
832583ad YW |
205 | assert(a); |
206 | assert(link); | |
207 | ||
e680486d YW |
208 | if (!address_needs_to_set_broadcast(a, link)) |
209 | return; | |
832583ad | 210 | |
e680486d | 211 | a->broadcast.s_addr = a->in_addr.in.s_addr | htobe32(UINT32_C(0xffffffff) >> a->prefixlen); |
832583ad YW |
212 | } |
213 | ||
b9e4ec50 | 214 | static void address_set_cinfo(Manager *m, const Address *a, struct ifa_cacheinfo *cinfo) { |
16bc8635 YW |
215 | usec_t now_usec; |
216 | ||
def4741b | 217 | assert(m); |
16bc8635 YW |
218 | assert(a); |
219 | assert(cinfo); | |
220 | ||
def4741b | 221 | assert_se(sd_event_now(m->event, CLOCK_BOOTTIME, &now_usec) >= 0); |
16bc8635 YW |
222 | |
223 | *cinfo = (struct ifa_cacheinfo) { | |
5235d739 YW |
224 | .ifa_valid = usec_to_sec(a->lifetime_valid_usec, now_usec), |
225 | .ifa_prefered = usec_to_sec(a->lifetime_preferred_usec, now_usec), | |
16bc8635 | 226 | }; |
16bc8635 YW |
227 | } |
228 | ||
def4741b | 229 | static void address_set_lifetime(Manager *m, Address *a, const struct ifa_cacheinfo *cinfo) { |
16bc8635 YW |
230 | usec_t now_usec; |
231 | ||
def4741b | 232 | assert(m); |
16bc8635 YW |
233 | assert(a); |
234 | assert(cinfo); | |
235 | ||
def4741b | 236 | assert_se(sd_event_now(m->event, CLOCK_BOOTTIME, &now_usec) >= 0); |
16bc8635 | 237 | |
5235d739 YW |
238 | a->lifetime_valid_usec = sec_to_usec(cinfo->ifa_valid, now_usec); |
239 | a->lifetime_preferred_usec = sec_to_usec(cinfo->ifa_prefered, now_usec); | |
16bc8635 YW |
240 | } |
241 | ||
1d30fc5c YW |
242 | static uint32_t address_prefix(const Address *a) { |
243 | assert(a); | |
244 | ||
245 | /* make sure we don't try to shift by 32. | |
246 | * See ISO/IEC 9899:TC3 § 6.5.7.3. */ | |
247 | if (a->prefixlen == 0) | |
248 | return 0; | |
249 | ||
250 | if (a->in_addr_peer.in.s_addr != 0) | |
251 | return be32toh(a->in_addr_peer.in.s_addr) >> (32 - a->prefixlen); | |
252 | else | |
253 | return be32toh(a->in_addr.in.s_addr) >> (32 - a->prefixlen); | |
254 | } | |
255 | ||
5d003031 | 256 | static void address_kernel_hash_func(const Address *a, struct siphash *state) { |
3ac8e543 TG |
257 | assert(a); |
258 | ||
259 | siphash24_compress(&a->family, sizeof(a->family), state); | |
260 | ||
1d30fc5c YW |
261 | switch (a->family) { |
262 | case AF_INET: | |
263 | siphash24_compress(&a->prefixlen, sizeof(a->prefixlen), state); | |
3ac8e543 | 264 | |
1d30fc5c YW |
265 | uint32_t prefix = address_prefix(a); |
266 | siphash24_compress(&prefix, sizeof(prefix), state); | |
3ac8e543 | 267 | |
1d30fc5c YW |
268 | _fallthrough_; |
269 | case AF_INET6: | |
270 | siphash24_compress(&a->in_addr, FAMILY_ADDRESS_SIZE(a->family), state); | |
271 | break; | |
272 | default: | |
273 | /* treat any other address family as AF_UNSPEC */ | |
274 | break; | |
275 | } | |
3ac8e543 TG |
276 | } |
277 | ||
5d003031 | 278 | static int address_kernel_compare_func(const Address *a1, const Address *a2) { |
a0edd02e | 279 | int r; |
3ac8e543 | 280 | |
a0edd02e FB |
281 | r = CMP(a1->family, a2->family); |
282 | if (r != 0) | |
283 | return r; | |
3ac8e543 | 284 | |
1d30fc5c YW |
285 | switch (a1->family) { |
286 | case AF_INET: | |
287 | /* See kernel's find_matching_ifa() in net/ipv4/devinet.c */ | |
288 | r = CMP(a1->prefixlen, a2->prefixlen); | |
24be9181 ZJS |
289 | if (r != 0) |
290 | return r; | |
3ac8e543 | 291 | |
1d30fc5c YW |
292 | r = CMP(address_prefix(a1), address_prefix(a2)); |
293 | if (r != 0) | |
294 | return r; | |
2a236f9f | 295 | |
1d30fc5c YW |
296 | _fallthrough_; |
297 | case AF_INET6: | |
298 | /* See kernel's ipv6_get_ifaddr() in net/ipv6/addrconf.c */ | |
299 | return memcmp(&a1->in_addr, &a2->in_addr, FAMILY_ADDRESS_SIZE(a1->family)); | |
300 | default: | |
301 | /* treat any other address family as AF_UNSPEC */ | |
302 | return 0; | |
303 | } | |
3ac8e543 TG |
304 | } |
305 | ||
50783f91 | 306 | DEFINE_PRIVATE_HASH_OPS( |
5d003031 | 307 | address_kernel_hash_ops, |
50783f91 | 308 | Address, |
5d003031 YW |
309 | address_kernel_hash_func, |
310 | address_kernel_compare_func); | |
311 | ||
42f8b6a8 YW |
312 | DEFINE_PRIVATE_HASH_OPS_WITH_KEY_DESTRUCTOR( |
313 | address_kernel_hash_ops_free, | |
314 | Address, | |
315 | address_kernel_hash_func, | |
316 | address_kernel_compare_func, | |
317 | address_free); | |
318 | ||
319 | /* The functions below are mainly used by managing Request. */ | |
09d09207 | 320 | static void address_hash_func(const Address *a, struct siphash *state) { |
5d003031 YW |
321 | assert(a); |
322 | ||
323 | siphash24_compress(&a->family, sizeof(a->family), state); | |
324 | ||
325 | /* treat any other address family as AF_UNSPEC */ | |
326 | if (!IN_SET(a->family, AF_INET, AF_INET6)) | |
327 | return; | |
328 | ||
329 | siphash24_compress(&a->prefixlen, sizeof(a->prefixlen), state); | |
330 | siphash24_compress(&a->in_addr, FAMILY_ADDRESS_SIZE(a->family), state); | |
331 | siphash24_compress(&a->in_addr_peer, FAMILY_ADDRESS_SIZE(a->family), state); | |
390247d2 YW |
332 | |
333 | if (a->family == AF_INET) { | |
334 | /* On update, the kernel ignores the address label and broadcast address, hence we need | |
335 | * to distinguish addresses with different labels or broadcast addresses. Otherwise, | |
336 | * the label or broadcast address change will not be applied when we reconfigure the | |
337 | * interface. */ | |
338 | siphash24_compress_string(a->label, state); | |
339 | siphash24_compress(&a->broadcast, sizeof(a->broadcast), state); | |
340 | } | |
5d003031 YW |
341 | } |
342 | ||
343 | int address_compare_func(const Address *a1, const Address *a2) { | |
344 | int r; | |
345 | ||
346 | r = CMP(a1->family, a2->family); | |
347 | if (r != 0) | |
348 | return r; | |
349 | ||
350 | if (!IN_SET(a1->family, AF_INET, AF_INET6)) | |
351 | return 0; | |
352 | ||
353 | r = CMP(a1->prefixlen, a2->prefixlen); | |
354 | if (r != 0) | |
355 | return r; | |
356 | ||
357 | r = memcmp(&a1->in_addr, &a2->in_addr, FAMILY_ADDRESS_SIZE(a1->family)); | |
358 | if (r != 0) | |
359 | return r; | |
360 | ||
361 | r = memcmp(&a1->in_addr_peer, &a2->in_addr_peer, FAMILY_ADDRESS_SIZE(a1->family)); | |
362 | if (r != 0) | |
363 | return r; | |
364 | ||
390247d2 YW |
365 | if (a1->family == AF_INET) { |
366 | r = strcmp_ptr(a1->label, a2->label); | |
367 | if (r != 0) | |
368 | return r; | |
369 | ||
370 | r = CMP(a1->broadcast.s_addr, a2->broadcast.s_addr); | |
371 | if (r != 0) | |
372 | return r; | |
373 | } | |
374 | ||
5d003031 YW |
375 | return 0; |
376 | } | |
50783f91 | 377 | |
42f8b6a8 YW |
378 | int address_equal(const Address *a1, const Address *a2) { |
379 | if (a1 == a2) | |
380 | return true; | |
381 | ||
382 | if (!a1 || !a2) | |
383 | return false; | |
384 | ||
385 | return address_compare_func(a1, a2) == 0; | |
386 | } | |
387 | ||
388 | static int address_equalify(Address *address, const Address *src) { | |
389 | int r; | |
390 | ||
391 | assert(address); | |
392 | assert(src); | |
393 | ||
394 | if (address_kernel_compare_func(address, src) != 0) | |
395 | return -EINVAL; | |
396 | ||
397 | if (address->family == AF_INET) { | |
398 | address->broadcast = src->broadcast; | |
399 | r = free_and_strdup(&address->label, src->label); | |
400 | if (r < 0) | |
401 | return r; | |
402 | } else { | |
403 | address->prefixlen = src->prefixlen; | |
404 | address->in_addr_peer = src->in_addr_peer; | |
405 | } | |
406 | ||
407 | return 0; | |
408 | } | |
3ac8e543 | 409 | |
99b46669 YW |
410 | int address_dup(const Address *src, Address **ret) { |
411 | _cleanup_(address_freep) Address *dest = NULL; | |
cde1f0e8 YW |
412 | int r; |
413 | ||
cde1f0e8 | 414 | assert(src); |
99b46669 YW |
415 | assert(ret); |
416 | ||
417 | dest = newdup(Address, src, 1); | |
418 | if (!dest) | |
419 | return -ENOMEM; | |
420 | ||
421 | /* clear all pointers */ | |
422 | dest->network = NULL; | |
423 | dest->section = NULL; | |
424 | dest->link = NULL; | |
425 | dest->label = NULL; | |
426 | dest->acd = NULL; | |
4b3590c3 | 427 | dest->netlabel = NULL; |
cde1f0e8 | 428 | |
2a236f9f YW |
429 | if (src->family == AF_INET) { |
430 | r = free_and_strdup(&dest->label, src->label); | |
431 | if (r < 0) | |
432 | return r; | |
433 | } | |
cde1f0e8 | 434 | |
4b3590c3 TM |
435 | r = free_and_strdup(&dest->netlabel, src->netlabel); |
436 | if (r < 0) | |
437 | return r; | |
438 | ||
99b46669 | 439 | *ret = TAKE_PTR(dest); |
cde1f0e8 YW |
440 | return 0; |
441 | } | |
442 | ||
494b6b43 YW |
443 | static int address_set_masquerade(Address *address, bool add) { |
444 | union in_addr_union masked; | |
91b5f997 TG |
445 | int r; |
446 | ||
447 | assert(address); | |
494b6b43 | 448 | assert(address->link); |
91b5f997 | 449 | |
494b6b43 YW |
450 | if (!address->link->network) |
451 | return 0; | |
91b5f997 | 452 | |
48ed2766 FW |
453 | if (address->family == AF_INET && |
454 | !FLAGS_SET(address->link->network->ip_masquerade, ADDRESS_FAMILY_IPV4)) | |
494b6b43 | 455 | return 0; |
91b5f997 | 456 | |
48ed2766 FW |
457 | if (address->family == AF_INET6 && |
458 | !FLAGS_SET(address->link->network->ip_masquerade, ADDRESS_FAMILY_IPV6)) | |
494b6b43 | 459 | return 0; |
91b5f997 | 460 | |
494b6b43 YW |
461 | if (address->scope >= RT_SCOPE_LINK) |
462 | return 0; | |
463 | ||
da0e2bae | 464 | if (address->ip_masquerade_done == add) |
494b6b43 YW |
465 | return 0; |
466 | ||
467 | masked = address->in_addr; | |
468 | r = in_addr_mask(address->family, &masked, address->prefixlen); | |
469 | if (r < 0) | |
470 | return r; | |
471 | ||
48ed2766 | 472 | r = fw_add_masquerade(&address->link->manager->fw_ctx, add, address->family, &masked, address->prefixlen); |
494b6b43 YW |
473 | if (r < 0) |
474 | return r; | |
475 | ||
da0e2bae | 476 | address->ip_masquerade_done = add; |
91b5f997 TG |
477 | |
478 | return 0; | |
479 | } | |
480 | ||
3b6a3bde | 481 | static int address_add(Link *link, Address *address) { |
cf1d700d TG |
482 | int r; |
483 | ||
484 | assert(link); | |
3b6a3bde | 485 | assert(address); |
cf1d700d | 486 | |
42f8b6a8 | 487 | r = set_ensure_put(&link->addresses, &address_kernel_hash_ops_free, address); |
cf1d700d TG |
488 | if (r < 0) |
489 | return r; | |
75a302b5 YW |
490 | if (r == 0) |
491 | return -EEXIST; | |
cf1d700d TG |
492 | |
493 | address->link = link; | |
7b3a7581 | 494 | return 0; |
adda1ed9 TG |
495 | } |
496 | ||
f9831557 | 497 | static int address_update(Address *address) { |
4bbe559b | 498 | Link *link = ASSERT_PTR(ASSERT_PTR(address)->link); |
e7ab854c | 499 | int r; |
36c32f61 | 500 | |
7657ec3e YW |
501 | if (address_is_ready(address) && |
502 | address->family == AF_INET6 && | |
503 | in6_addr_is_link_local(&address->in_addr.in6) && | |
504 | in6_addr_is_null(&link->ipv6ll_address)) { | |
505 | ||
506 | link->ipv6ll_address = address->in_addr.in6; | |
507 | ||
508 | r = link_ipv6ll_gained(link); | |
509 | if (r < 0) | |
510 | return r; | |
511 | } | |
512 | ||
2c40a889 | 513 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
ea121d8f YW |
514 | return 0; |
515 | ||
4bbe559b | 516 | r = address_set_masquerade(address, /* add = */ true); |
7a8685ff YW |
517 | if (r < 0) |
518 | return log_link_warning_errno(link, r, "Could not enable IP masquerading: %m"); | |
519 | ||
4b3590c3 TM |
520 | address_add_netlabel(address); |
521 | ||
981fab5d YW |
522 | if (address_is_ready(address) && address->callback) { |
523 | r = address->callback(address); | |
524 | if (r < 0) | |
525 | return r; | |
a3a019e1 | 526 | } |
36c32f61 | 527 | |
4bbe559b | 528 | link_update_operstate(link, /* also_update_master = */ true); |
981fab5d | 529 | link_check_ready(link); |
36c32f61 TG |
530 | return 0; |
531 | } | |
532 | ||
67a58eb3 | 533 | static int address_drop(Address *address) { |
4bbe559b | 534 | Link *link = ASSERT_PTR(ASSERT_PTR(address)->link); |
7750b796 | 535 | int r; |
8012cd39 | 536 | |
4bbe559b | 537 | r = address_set_masquerade(address, /* add = */ false); |
7750b796 YW |
538 | if (r < 0) |
539 | log_link_warning_errno(link, r, "Failed to disable IP masquerading, ignoring: %m"); | |
540 | ||
4b3590c3 TM |
541 | address_del_netlabel(address); |
542 | ||
3b6a3bde YW |
543 | if (address->state == 0) |
544 | address_free(address); | |
91b5f997 | 545 | |
aaad20e0 YW |
546 | link_update_operstate(link, /* also_update_master = */ true); |
547 | link_check_ready(link); | |
91b5f997 TG |
548 | return 0; |
549 | } | |
550 | ||
fe841414 YW |
551 | int address_get(Link *link, const Address *in, Address **ret) { |
552 | Address *existing; | |
91b5f997 | 553 | |
5a8bcb67 | 554 | assert(link); |
fe841414 | 555 | assert(in); |
5a8bcb67 | 556 | |
fe841414 | 557 | existing = set_get(link->addresses, in); |
3b6a3bde YW |
558 | if (!existing) |
559 | return -ENOENT; | |
5a8bcb67 | 560 | |
3b6a3bde YW |
561 | if (ret) |
562 | *ret = existing; | |
563 | return 0; | |
5a8bcb67 LP |
564 | } |
565 | ||
5d003031 | 566 | int link_get_address(Link *link, int family, const union in_addr_union *address, unsigned char prefixlen, Address **ret) { |
390247d2 | 567 | Address *a; |
c5a0aeb3 | 568 | int r; |
5eec0a08 | 569 | |
c5a0aeb3 | 570 | assert(link); |
5d003031 | 571 | assert(IN_SET(family, AF_INET, AF_INET6)); |
c5a0aeb3 | 572 | assert(address); |
5eec0a08 | 573 | |
5d003031 YW |
574 | /* This find an Address object on the link which matches the given address and prefix length |
575 | * and does not have peer address. When the prefixlen is zero, then an Address object with an | |
576 | * arbitrary prefixlen will be returned. */ | |
998545a7 | 577 | |
42f8b6a8 | 578 | if (family == AF_INET6 || prefixlen != 0) { |
390247d2 | 579 | _cleanup_(address_freep) Address *tmp = NULL; |
998545a7 | 580 | |
42f8b6a8 | 581 | /* In this case, we can use address_get(). */ |
998545a7 | 582 | |
390247d2 | 583 | r = address_new(&tmp); |
998545a7 YW |
584 | if (r < 0) |
585 | return r; | |
586 | ||
390247d2 YW |
587 | tmp->family = family; |
588 | tmp->in_addr = *address; | |
589 | tmp->prefixlen = prefixlen; | |
3b6a3bde | 590 | |
42f8b6a8 YW |
591 | r = address_get(link, tmp, &a); |
592 | if (r < 0) | |
593 | return r; | |
3b6a3bde | 594 | |
42f8b6a8 YW |
595 | if (family == AF_INET6) { |
596 | /* IPv6 addresses are managed without peer address and prefix length. Hence, we need | |
597 | * to check them explicitly. */ | |
598 | if (in_addr_is_set(family, &a->in_addr_peer)) | |
599 | return -ENOENT; | |
600 | if (prefixlen != 0 && a->prefixlen != prefixlen) | |
601 | return -ENOENT; | |
3b6a3bde YW |
602 | } |
603 | ||
42f8b6a8 YW |
604 | if (ret) |
605 | *ret = a; | |
390247d2 | 606 | |
42f8b6a8 | 607 | return 0; |
390247d2 YW |
608 | } |
609 | ||
610 | SET_FOREACH(a, link->addresses) { | |
611 | if (a->family != family) | |
612 | continue; | |
613 | ||
614 | if (!in_addr_equal(family, &a->in_addr, address)) | |
615 | continue; | |
616 | ||
617 | if (in_addr_is_set(family, &a->in_addr_peer)) | |
618 | continue; | |
619 | ||
620 | if (ret) | |
621 | *ret = a; | |
622 | ||
623 | return 0; | |
3b6a3bde | 624 | } |
390247d2 YW |
625 | |
626 | return -ENOENT; | |
998545a7 YW |
627 | } |
628 | ||
77e9be1e | 629 | int manager_get_address(Manager *manager, int family, const union in_addr_union *address, unsigned char prefixlen, Address **ret) { |
591bd5f3 | 630 | Link *link; |
591bd5f3 YW |
631 | |
632 | assert(manager); | |
633 | assert(IN_SET(family, AF_INET, AF_INET6)); | |
634 | assert(address); | |
635 | ||
77e9be1e YW |
636 | HASHMAP_FOREACH(link, manager->links_by_index) { |
637 | if (!IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) | |
638 | continue; | |
639 | ||
640 | if (link_get_address(link, family, address, prefixlen, ret) >= 0) | |
641 | return 0; | |
642 | } | |
643 | ||
644 | return -ENOENT; | |
645 | } | |
646 | ||
647 | bool manager_has_address(Manager *manager, int family, const union in_addr_union *address, bool check_ready) { | |
648 | Address *a; | |
649 | ||
650 | assert(manager); | |
651 | assert(IN_SET(family, AF_INET, AF_INET6)); | |
652 | assert(address); | |
653 | ||
654 | if (manager_get_address(manager, family, address, 0, &a) < 0) | |
655 | return false; | |
591bd5f3 | 656 | |
77e9be1e | 657 | return check_ready ? address_is_ready(a) : address_exists(a); |
591bd5f3 YW |
658 | } |
659 | ||
16bc8635 | 660 | const char* format_lifetime(char *buf, size_t l, usec_t lifetime_usec) { |
0fd97a25 | 661 | assert(buf); |
a35f3128 | 662 | assert(l > 4); |
0fd97a25 | 663 | |
16bc8635 | 664 | if (lifetime_usec == USEC_INFINITY) |
a35f3128 | 665 | return "forever"; |
0fd97a25 | 666 | |
a35f3128 ZJS |
667 | sprintf(buf, "for "); |
668 | /* format_timespan() never fails */ | |
ba4e0427 | 669 | assert_se(format_timespan(buf + 4, l - 4, usec_sub_unsigned(lifetime_usec, now(CLOCK_BOOTTIME)), USEC_PER_SEC)); |
a35f3128 | 670 | return buf; |
0fd97a25 YW |
671 | } |
672 | ||
24f50382 | 673 | static void log_address_debug(const Address *address, const char *str, const Link *link) { |
84dbb3fd | 674 | _cleanup_free_ char *state = NULL, *flags_str = NULL, *scope_str = NULL; |
7653a9dc | 675 | |
24f50382 YW |
676 | assert(address); |
677 | assert(str); | |
678 | assert(link); | |
679 | ||
7653a9dc YW |
680 | if (!DEBUG_LOGGING) |
681 | return; | |
682 | ||
3b6a3bde | 683 | (void) network_config_state_to_string_alloc(address->state, &state); |
84dbb3fd ZJS |
684 | |
685 | const char *peer = in_addr_is_set(address->family, &address->in_addr_peer) ? | |
686 | IN_ADDR_TO_STRING(address->family, &address->in_addr_peer) : NULL; | |
7653a9dc | 687 | |
a2362484 | 688 | (void) address_flags_to_string_alloc(address->flags, address->family, &flags_str); |
78ef25a5 | 689 | (void) route_scope_to_string_alloc(address->scope, &scope_str); |
a2362484 | 690 | |
78ef25a5 | 691 | log_link_debug(link, "%s %s address (%s): %s%s%s/%u (valid %s, preferred %s), flags: %s, scope: %s", |
3b6a3bde | 692 | str, strna(network_config_source_to_string(address->source)), strna(state), |
84dbb3fd ZJS |
693 | IN_ADDR_TO_STRING(address->family, &address->in_addr), |
694 | peer ? " peer " : "", strempty(peer), address->prefixlen, | |
16bc8635 YW |
695 | FORMAT_LIFETIME(address->lifetime_valid_usec), |
696 | FORMAT_LIFETIME(address->lifetime_preferred_usec), | |
78ef25a5 | 697 | strna(flags_str), strna(scope_str)); |
24f50382 YW |
698 | } |
699 | ||
a79a8d16 | 700 | static int address_set_netlink_message(const Address *address, sd_netlink_message *m, Link *link) { |
d5e3b3eb | 701 | uint32_t flags; |
a8481354 YW |
702 | int r; |
703 | ||
704 | assert(address); | |
a79a8d16 | 705 | assert(m); |
a8481354 YW |
706 | assert(link); |
707 | ||
a79a8d16 | 708 | r = sd_rtnl_message_addr_set_prefixlen(m, address->prefixlen); |
a8481354 | 709 | if (r < 0) |
a79a8d16 | 710 | return r; |
a8481354 YW |
711 | |
712 | /* On remove, only IFA_F_MANAGETEMPADDR flag for IPv6 addresses are used. But anyway, set all | |
d5e3b3eb YW |
713 | * flags except tentative flag here unconditionally. Without setting the flag, the template |
714 | * addresses generated by kernel will not be removed automatically when the main address is | |
715 | * removed. */ | |
716 | flags = address->flags & ~IFA_F_TENTATIVE; | |
a79a8d16 | 717 | r = sd_rtnl_message_addr_set_flags(m, flags & 0xff); |
a8481354 | 718 | if (r < 0) |
a79a8d16 | 719 | return r; |
a8481354 | 720 | |
d5e3b3eb | 721 | if ((flags & ~0xff) != 0) { |
a79a8d16 | 722 | r = sd_netlink_message_append_u32(m, IFA_FLAGS, flags); |
a8481354 | 723 | if (r < 0) |
a79a8d16 | 724 | return r; |
a8481354 YW |
725 | } |
726 | ||
a79a8d16 | 727 | r = netlink_message_append_in_addr_union(m, IFA_LOCAL, address->family, &address->in_addr); |
a8481354 | 728 | if (r < 0) |
a79a8d16 | 729 | return r; |
a8481354 YW |
730 | |
731 | return 0; | |
732 | } | |
733 | ||
f4cc1364 | 734 | static int address_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
5a07fa9d YW |
735 | int r; |
736 | ||
5a07fa9d YW |
737 | assert(m); |
738 | assert(link); | |
76c5a0f2 | 739 | |
5a07fa9d YW |
740 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
741 | return 0; | |
742 | ||
743 | r = sd_netlink_message_get_errno(m); | |
744 | if (r < 0 && r != -EADDRNOTAVAIL) | |
f4cc1364 | 745 | log_link_message_warning_errno(link, m, r, "Could not drop address"); |
5a07fa9d YW |
746 | |
747 | return 1; | |
748 | } | |
749 | ||
3b6a3bde | 750 | int address_remove(Address *address) { |
a79a8d16 | 751 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; |
3b6a3bde | 752 | Link *link; |
407fe036 TG |
753 | int r; |
754 | ||
755 | assert(address); | |
4c701096 | 756 | assert(IN_SET(address->family, AF_INET, AF_INET6)); |
3b6a3bde YW |
757 | assert(address->link); |
758 | assert(address->link->ifindex > 0); | |
759 | assert(address->link->manager); | |
760 | assert(address->link->manager->rtnl); | |
761 | ||
762 | link = address->link; | |
407fe036 | 763 | |
24f50382 | 764 | log_address_debug(address, "Removing", link); |
30226d27 | 765 | |
a79a8d16 | 766 | r = sd_rtnl_message_new_addr(link->manager->rtnl, &m, RTM_DELADDR, |
151b9b96 | 767 | link->ifindex, address->family); |
eb56eb9b | 768 | if (r < 0) |
a79a8d16 | 769 | return log_link_warning_errno(link, r, "Could not allocate RTM_DELADDR message: %m"); |
407fe036 | 770 | |
a79a8d16 | 771 | r = address_set_netlink_message(address, m, link); |
eb56eb9b | 772 | if (r < 0) |
a79a8d16 | 773 | return log_link_warning_errno(link, r, "Could not set netlink attributes: %m"); |
407fe036 | 774 | |
a79a8d16 | 775 | r = netlink_call_async(link->manager->rtnl, NULL, m, |
f4cc1364 | 776 | address_remove_handler, |
302a796f | 777 | link_netlink_destroy_callback, link); |
eb56eb9b | 778 | if (r < 0) |
a79a8d16 | 779 | return log_link_warning_errno(link, r, "Could not send rtnetlink message: %m"); |
407fe036 | 780 | |
563c69c6 TG |
781 | link_ref(link); |
782 | ||
3b6a3bde | 783 | address_enter_removing(address); |
613d65d8 YW |
784 | |
785 | /* The operational state is determined by address state and carrier state. Hence, if we remove | |
786 | * an address, the operational state may be changed. */ | |
787 | link_update_operstate(link, true); | |
407fe036 TG |
788 | return 0; |
789 | } | |
790 | ||
d4b76314 YW |
791 | int address_remove_and_drop(Address *address) { |
792 | if (!address) | |
793 | return 0; | |
794 | ||
795 | address_cancel_request(address); | |
796 | ||
797 | if (address_exists(address)) | |
798 | return address_remove(address); | |
799 | ||
800 | return address_drop(address); | |
801 | } | |
802 | ||
3def8850 | 803 | bool link_address_is_dynamic(const Link *link, const Address *address) { |
f8f2f880 YW |
804 | Route *route; |
805 | ||
806 | assert(link); | |
807 | assert(address); | |
808 | ||
16bc8635 | 809 | if (address->lifetime_preferred_usec != USEC_INFINITY) |
f8f2f880 YW |
810 | return true; |
811 | ||
812 | /* Even when the address is leased from a DHCP server, networkd assign the address | |
813 | * without lifetime when KeepConfiguration=dhcp. So, let's check that we have | |
814 | * corresponding routes with RTPROT_DHCP. */ | |
3b6a3bde YW |
815 | SET_FOREACH(route, link->routes) { |
816 | if (route->source != NETWORK_CONFIG_SOURCE_FOREIGN) | |
817 | continue; | |
818 | ||
f974f17a YW |
819 | /* The route is not assigned yet, or already removed. Ignoring. */ |
820 | if (!route_exists(route)) | |
821 | continue; | |
822 | ||
f8f2f880 YW |
823 | if (route->protocol != RTPROT_DHCP) |
824 | continue; | |
825 | ||
826 | if (address->family != route->family) | |
827 | continue; | |
828 | ||
829 | if (in_addr_equal(address->family, &address->in_addr, &route->prefsrc)) | |
830 | return true; | |
831 | } | |
832 | ||
833 | return false; | |
834 | } | |
835 | ||
b9bf3f22 | 836 | int link_drop_ipv6ll_addresses(Link *link) { |
51f5dfd8 | 837 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; |
51f5dfd8 YW |
838 | int r; |
839 | ||
840 | assert(link); | |
841 | assert(link->manager); | |
842 | assert(link->manager->rtnl); | |
843 | ||
b9bf3f22 YW |
844 | /* IPv6LL address may be in the tentative state, and in that case networkd has not received it. |
845 | * So, we need to dump all IPv6 addresses. */ | |
846 | ||
bd7e0a3f | 847 | if (link_may_have_ipv6ll(link, /* check_multicast = */ false)) |
b9bf3f22 YW |
848 | return 0; |
849 | ||
c31298be | 850 | r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_GETADDR, link->ifindex, AF_INET6); |
51f5dfd8 YW |
851 | if (r < 0) |
852 | return r; | |
853 | ||
24c0f385 | 854 | r = sd_netlink_message_set_request_dump(req, true); |
f318f643 YW |
855 | if (r < 0) |
856 | return r; | |
857 | ||
51f5dfd8 YW |
858 | r = sd_netlink_call(link->manager->rtnl, req, 0, &reply); |
859 | if (r < 0) | |
860 | return r; | |
861 | ||
cda7fc8d | 862 | for (sd_netlink_message *addr = reply; addr; addr = sd_netlink_message_next(addr)) { |
b9bf3f22 YW |
863 | _cleanup_(address_freep) Address *a = NULL; |
864 | unsigned char flags, prefixlen; | |
865 | struct in6_addr address; | |
3b6a3bde | 866 | Address *existing; |
51f5dfd8 YW |
867 | int ifindex; |
868 | ||
c31298be YW |
869 | /* NETLINK_GET_STRICT_CHK socket option is supported since kernel 4.20. To support |
870 | * older kernels, we need to check ifindex here. */ | |
51f5dfd8 YW |
871 | r = sd_rtnl_message_addr_get_ifindex(addr, &ifindex); |
872 | if (r < 0) { | |
b9bf3f22 | 873 | log_link_debug_errno(link, r, "rtnl: received address message without valid ifindex, ignoring: %m"); |
51f5dfd8 YW |
874 | continue; |
875 | } else if (link->ifindex != ifindex) | |
876 | continue; | |
877 | ||
878 | r = sd_rtnl_message_addr_get_flags(addr, &flags); | |
879 | if (r < 0) { | |
b9bf3f22 YW |
880 | log_link_debug_errno(link, r, "rtnl: received address message without valid flags, ignoring: %m"); |
881 | continue; | |
882 | } | |
883 | ||
884 | r = sd_rtnl_message_addr_get_prefixlen(addr, &prefixlen); | |
885 | if (r < 0) { | |
886 | log_link_debug_errno(link, r, "rtnl: received address message without prefixlen, ignoring: %m"); | |
51f5dfd8 | 887 | continue; |
b9bf3f22 YW |
888 | } |
889 | ||
890 | if (sd_netlink_message_read_in6_addr(addr, IFA_LOCAL, NULL) >= 0) | |
891 | /* address with peer, ignoring. */ | |
51f5dfd8 YW |
892 | continue; |
893 | ||
b9bf3f22 YW |
894 | r = sd_netlink_message_read_in6_addr(addr, IFA_ADDRESS, &address); |
895 | if (r < 0) { | |
896 | log_link_debug_errno(link, r, "rtnl: received address message without valid address, ignoring: %m"); | |
897 | continue; | |
898 | } | |
899 | ||
900 | if (!in6_addr_is_link_local(&address)) | |
901 | continue; | |
902 | ||
903 | r = address_new(&a); | |
904 | if (r < 0) | |
905 | return -ENOMEM; | |
906 | ||
907 | a->family = AF_INET6; | |
908 | a->in_addr.in6 = address; | |
909 | a->prefixlen = prefixlen; | |
910 | a->flags = flags; | |
911 | ||
3b6a3bde YW |
912 | if (address_get(link, a, &existing) < 0) { |
913 | r = address_add(link, a); | |
914 | if (r < 0) | |
915 | return r; | |
916 | ||
917 | existing = TAKE_PTR(a); | |
918 | } | |
919 | ||
920 | r = address_remove(existing); | |
b9bf3f22 YW |
921 | if (r < 0) |
922 | return r; | |
51f5dfd8 YW |
923 | } |
924 | ||
925 | return 0; | |
926 | } | |
927 | ||
f8f2f880 YW |
928 | int link_drop_foreign_addresses(Link *link) { |
929 | Address *address; | |
930 | int k, r = 0; | |
931 | ||
932 | assert(link); | |
3b6a3bde | 933 | assert(link->network); |
f8f2f880 | 934 | |
3b6a3bde YW |
935 | /* First, mark all addresses. */ |
936 | SET_FOREACH(address, link->addresses) { | |
b9bf3f22 | 937 | /* We consider IPv6LL addresses to be managed by the kernel, or dropped in link_drop_ipv6ll_addresses() */ |
ecedc48b | 938 | if (address->family == AF_INET6 && in6_addr_is_link_local(&address->in_addr.in6)) |
f8f2f880 YW |
939 | continue; |
940 | ||
b69bfa43 YW |
941 | /* Do not remove localhost address (127.0.0.1 and ::1) */ |
942 | if (link->flags & IFF_LOOPBACK && in_addr_is_localhost_one(address->family, &address->in_addr) > 0) | |
943 | continue; | |
944 | ||
3b6a3bde YW |
945 | /* Ignore addresses we configured. */ |
946 | if (address->source != NETWORK_CONFIG_SOURCE_FOREIGN) | |
947 | continue; | |
948 | ||
949 | /* Ignore addresses not assigned yet or already removing. */ | |
950 | if (!address_exists(address)) | |
951 | continue; | |
952 | ||
a71c5c44 YW |
953 | /* link_address_is_dynamic() is slightly heavy. Let's call the function only when KeepConfiguration= is set. */ |
954 | if (IN_SET(link->network->keep_configuration, KEEP_CONFIGURATION_DHCP, KEEP_CONFIGURATION_STATIC) && | |
955 | link_address_is_dynamic(link, address) == (link->network->keep_configuration == KEEP_CONFIGURATION_DHCP)) | |
f8f2f880 YW |
956 | continue; |
957 | ||
3b6a3bde YW |
958 | address_mark(address); |
959 | } | |
960 | ||
961 | /* Then, unmark requested addresses. */ | |
962 | ORDERED_HASHMAP_FOREACH(address, link->network->addresses_by_section) { | |
963 | Address *existing; | |
964 | ||
42f8b6a8 YW |
965 | /* On update, the kernel ignores the address label and broadcast address. Hence we need to |
966 | * distinguish addresses with different labels or broadcast addresses. Thus, we need to check | |
967 | * the existing address with address_equal(). Otherwise, the label or broadcast address | |
968 | * change will not be applied when we reconfigure the interface. */ | |
969 | if (address_get(link, address, &existing) >= 0 && address_equal(address, existing)) | |
3b6a3bde YW |
970 | address_unmark(existing); |
971 | } | |
972 | ||
973 | /* Finally, remove all marked addresses. */ | |
974 | SET_FOREACH(address, link->addresses) { | |
975 | if (!address_is_marked(address)) | |
976 | continue; | |
977 | ||
978 | k = address_remove(address); | |
979 | if (k < 0 && r >= 0) | |
980 | r = k; | |
f8f2f880 YW |
981 | } |
982 | ||
983 | return r; | |
984 | } | |
985 | ||
a0e99a37 | 986 | int link_drop_managed_addresses(Link *link) { |
3b6a3bde | 987 | Address *address; |
d7fbb9f5 YW |
988 | int k, r = 0; |
989 | ||
990 | assert(link); | |
991 | ||
992 | SET_FOREACH(address, link->addresses) { | |
a0e99a37 YW |
993 | /* Do not touch addresses managed by kernel or other tools. */ |
994 | if (address->source == NETWORK_CONFIG_SOURCE_FOREIGN) | |
3b6a3bde YW |
995 | continue; |
996 | ||
a0e99a37 YW |
997 | /* Ignore addresses not assigned yet or already removing. */ |
998 | if (!address_exists(address)) | |
d7fbb9f5 YW |
999 | continue; |
1000 | ||
3b6a3bde | 1001 | k = address_remove(address); |
d7fbb9f5 YW |
1002 | if (k < 0 && r >= 0) { |
1003 | r = k; | |
1004 | continue; | |
1005 | } | |
d7fbb9f5 YW |
1006 | } |
1007 | ||
1008 | return r; | |
1009 | } | |
1010 | ||
b4564f4e YW |
1011 | void link_foreignize_addresses(Link *link) { |
1012 | Address *address; | |
1013 | ||
1014 | assert(link); | |
1015 | ||
1016 | SET_FOREACH(address, link->addresses) | |
1017 | address->source = NETWORK_CONFIG_SOURCE_FOREIGN; | |
1018 | } | |
1019 | ||
693ec5ca | 1020 | static int address_acquire(Link *link, const Address *original, Address **ret) { |
8e766630 | 1021 | _cleanup_(address_freep) Address *na = NULL; |
3b6a3bde | 1022 | union in_addr_union in_addr; |
11bf3cce LP |
1023 | int r; |
1024 | ||
1025 | assert(link); | |
1026 | assert(original); | |
1027 | assert(ret); | |
1028 | ||
1029 | /* Something useful was configured? just use it */ | |
94876904 | 1030 | if (in_addr_is_set(original->family, &original->in_addr)) { |
aa651e88 YW |
1031 | *ret = NULL; |
1032 | return 0; | |
1033 | } | |
11bf3cce LP |
1034 | |
1035 | /* The address is configured to be 0.0.0.0 or [::] by the user? | |
1036 | * Then let's acquire something more useful from the pool. */ | |
ed76f585 | 1037 | r = address_pool_acquire(link->manager, original->family, original->prefixlen, &in_addr); |
6a7a4e4d | 1038 | if (r < 0) |
7750b796 YW |
1039 | return r; |
1040 | if (r == 0) | |
11bf3cce | 1041 | return -EBUSY; |
11bf3cce | 1042 | |
473680be YW |
1043 | /* Pick first address in range for ourselves. */ |
1044 | if (original->family == AF_INET) | |
11bf3cce | 1045 | in_addr.in.s_addr = in_addr.in.s_addr | htobe32(1); |
473680be | 1046 | else if (original->family == AF_INET6) |
11bf3cce LP |
1047 | in_addr.in6.s6_addr[15] |= 1; |
1048 | ||
99b46669 | 1049 | r = address_dup(original, &na); |
cde1f0e8 YW |
1050 | if (r < 0) |
1051 | return r; | |
11bf3cce | 1052 | |
11bf3cce LP |
1053 | na->in_addr = in_addr; |
1054 | ||
1cc6c93a | 1055 | *ret = TAKE_PTR(na); |
aa651e88 | 1056 | return 1; |
11bf3cce LP |
1057 | } |
1058 | ||
5a07fa9d YW |
1059 | int address_configure_handler_internal(sd_netlink *rtnl, sd_netlink_message *m, Link *link, const char *error_msg) { |
1060 | int r; | |
1061 | ||
1062 | assert(rtnl); | |
1063 | assert(m); | |
1064 | assert(link); | |
1065 | assert(error_msg); | |
1066 | ||
5a07fa9d YW |
1067 | r = sd_netlink_message_get_errno(m); |
1068 | if (r < 0 && r != -EEXIST) { | |
1069 | log_link_message_warning_errno(link, m, r, error_msg); | |
1070 | link_enter_failed(link); | |
1071 | return 0; | |
3a1dfdb4 | 1072 | } |
5a07fa9d YW |
1073 | |
1074 | return 1; | |
1075 | } | |
1076 | ||
b9e4ec50 | 1077 | static int address_configure(const Address *address, const struct ifa_cacheinfo *c, Link *link, Request *req) { |
a79a8d16 | 1078 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; |
7b3a7581 | 1079 | int r; |
f579559b | 1080 | |
c166a070 | 1081 | assert(address); |
4c701096 | 1082 | assert(IN_SET(address->family, AF_INET, AF_INET6)); |
b9e4ec50 | 1083 | assert(c); |
c166a070 TG |
1084 | assert(link); |
1085 | assert(link->ifindex > 0); | |
f882c247 | 1086 | assert(link->manager); |
c166a070 | 1087 | assert(link->manager->rtnl); |
54ff39f7 | 1088 | assert(req); |
f882c247 | 1089 | |
c0c04a4b | 1090 | log_address_debug(address, "Configuring", link); |
1b566071 | 1091 | |
a79a8d16 | 1092 | r = sd_rtnl_message_new_addr_update(link->manager->rtnl, &m, link->ifindex, address->family); |
eb56eb9b | 1093 | if (r < 0) |
a79a8d16 | 1094 | return r; |
f579559b | 1095 | |
a79a8d16 | 1096 | r = address_set_netlink_message(address, m, link); |
eb56eb9b | 1097 | if (r < 0) |
a8481354 | 1098 | return r; |
851c9f82 | 1099 | |
a79a8d16 | 1100 | r = sd_rtnl_message_addr_set_scope(m, address->scope); |
eb56eb9b | 1101 | if (r < 0) |
a79a8d16 | 1102 | return r; |
5a723174 | 1103 | |
94876904 | 1104 | if (in_addr_is_set(address->family, &address->in_addr_peer)) { |
a79a8d16 | 1105 | r = netlink_message_append_in_addr_union(m, IFA_ADDRESS, address->family, &address->in_addr_peer); |
eb56eb9b | 1106 | if (r < 0) |
a79a8d16 | 1107 | return r; |
e680486d | 1108 | } else if (in4_addr_is_set(&address->broadcast)) { |
a79a8d16 | 1109 | r = sd_netlink_message_append_in_addr(m, IFA_BROADCAST, &address->broadcast); |
66e0bb33 | 1110 | if (r < 0) |
a79a8d16 | 1111 | return r; |
f579559b TG |
1112 | } |
1113 | ||
2a236f9f | 1114 | if (address->family == AF_INET && address->label) { |
a79a8d16 | 1115 | r = sd_netlink_message_append_string(m, IFA_LABEL, address->label); |
eb56eb9b | 1116 | if (r < 0) |
a79a8d16 | 1117 | return r; |
f579559b TG |
1118 | } |
1119 | ||
b9e4ec50 | 1120 | r = sd_netlink_message_append_cache_info(m, IFA_CACHEINFO, c); |
eb56eb9b | 1121 | if (r < 0) |
a79a8d16 | 1122 | return r; |
68ceb9df | 1123 | |
a79a8d16 | 1124 | r = sd_netlink_message_append_u32(m, IFA_RT_PRIORITY, address->route_metric); |
c4ff0629 | 1125 | if (r < 0) |
a79a8d16 | 1126 | return r; |
c4ff0629 | 1127 | |
80d62d4f | 1128 | return request_call_netlink_async(link->manager->rtnl, m, req); |
f579559b TG |
1129 | } |
1130 | ||
8bed7c55 YW |
1131 | static bool address_is_ready_to_configure(Link *link, const Address *address) { |
1132 | assert(link); | |
1133 | assert(address); | |
1134 | ||
1135 | if (!link_is_ready_to_configure(link, false)) | |
1136 | return false; | |
1137 | ||
e402e99e | 1138 | if (!ipv4acd_bound(address)) |
8bed7c55 YW |
1139 | return false; |
1140 | ||
1141 | /* Refuse adding more than the limit */ | |
1142 | if (set_size(link->addresses) >= ADDRESSES_PER_LINK_MAX) | |
1143 | return false; | |
1144 | ||
1145 | return true; | |
1146 | } | |
1147 | ||
09d09207 | 1148 | static int address_process_request(Request *req, Link *link, Address *address) { |
b9e4ec50 | 1149 | struct ifa_cacheinfo c; |
8bed7c55 YW |
1150 | int r; |
1151 | ||
1152 | assert(req); | |
ff51134c YW |
1153 | assert(link); |
1154 | assert(address); | |
8bed7c55 YW |
1155 | |
1156 | if (!address_is_ready_to_configure(link, address)) | |
1157 | return 0; | |
1158 | ||
b9e4ec50 YW |
1159 | address_set_cinfo(link->manager, address, &c); |
1160 | if (c.ifa_valid == 0) { | |
1161 | log_link_debug(link, "Refuse to configure %s address %s, as its valid lifetime is zero.", | |
1162 | network_config_source_to_string(address->source), | |
1163 | IN_ADDR_PREFIX_TO_STRING(address->family, &address->in_addr, address->prefixlen)); | |
1164 | address_cancel_requesting(address); | |
1165 | return 1; | |
1166 | } | |
1167 | ||
1168 | r = address_configure(address, &c, link, req); | |
8bed7c55 YW |
1169 | if (r < 0) |
1170 | return log_link_warning_errno(link, r, "Failed to configure address: %m"); | |
1171 | ||
1172 | address_enter_configuring(address); | |
1173 | return 1; | |
1174 | } | |
1175 | ||
76c5a0f2 YW |
1176 | int link_request_address( |
1177 | Link *link, | |
1178 | Address *address, | |
1179 | bool consume_object, | |
1180 | unsigned *message_counter, | |
80d62d4f | 1181 | address_netlink_handler_t netlink_handler, |
76c5a0f2 YW |
1182 | Request **ret) { |
1183 | ||
af2aea8b | 1184 | Address *acquired, *existing = NULL; |
c0c04a4b YW |
1185 | int r; |
1186 | ||
76c5a0f2 YW |
1187 | assert(link); |
1188 | assert(address); | |
3b6a3bde | 1189 | assert(address->source != NETWORK_CONFIG_SOURCE_FOREIGN); |
76c5a0f2 | 1190 | |
c0c04a4b YW |
1191 | r = address_acquire(link, address, &acquired); |
1192 | if (r < 0) | |
1193 | return log_link_warning_errno(link, r, "Failed to acquire an address from pool: %m"); | |
1194 | if (r > 0) { | |
3b6a3bde | 1195 | if (consume_object) |
c0c04a4b | 1196 | address_free(address); |
3b6a3bde | 1197 | |
c0c04a4b | 1198 | address = acquired; |
3b6a3bde YW |
1199 | consume_object = true; |
1200 | } | |
1201 | ||
e680486d YW |
1202 | if (address_needs_to_set_broadcast(address, link)) { |
1203 | if (!consume_object) { | |
1204 | Address *a; | |
1205 | ||
1206 | r = address_dup(address, &a); | |
1207 | if (r < 0) | |
1208 | return r; | |
1209 | ||
1210 | address = a; | |
1211 | consume_object = true; | |
1212 | } | |
1213 | ||
1214 | address_set_broadcast(address, link); | |
1215 | } | |
1216 | ||
af2aea8b YW |
1217 | (void) address_get(link, address, &existing); |
1218 | ||
303dfa73 YW |
1219 | if (address->lifetime_valid_usec == 0) { |
1220 | if (consume_object) | |
1221 | address_free(address); | |
1222 | ||
af2aea8b YW |
1223 | /* The requested address is outdated. Let's remove it. */ |
1224 | return address_remove_and_drop(existing); | |
303dfa73 | 1225 | } |
af2aea8b YW |
1226 | |
1227 | if (!existing) { | |
3b6a3bde YW |
1228 | _cleanup_(address_freep) Address *tmp = NULL; |
1229 | ||
435910b3 YW |
1230 | if (consume_object) |
1231 | tmp = address; | |
1232 | else { | |
1233 | r = address_dup(address, &tmp); | |
1234 | if (r < 0) | |
1235 | return r; | |
1236 | } | |
3b6a3bde YW |
1237 | |
1238 | /* Consider address tentative until we get the real flags from the kernel */ | |
1239 | tmp->flags |= IFA_F_TENTATIVE; | |
1240 | ||
1241 | r = address_add(link, tmp); | |
1242 | if (r < 0) | |
1243 | return r; | |
1244 | ||
1245 | existing = TAKE_PTR(tmp); | |
1246 | } else { | |
42f8b6a8 YW |
1247 | r = address_equalify(existing, address); |
1248 | if (r < 0) | |
1249 | return r; | |
3b6a3bde YW |
1250 | existing->source = address->source; |
1251 | existing->provider = address->provider; | |
3c45d0d0 | 1252 | existing->duplicate_address_detection = address->duplicate_address_detection; |
435910b3 YW |
1253 | existing->lifetime_valid_usec = address->lifetime_valid_usec; |
1254 | existing->lifetime_preferred_usec = address->lifetime_preferred_usec; | |
1255 | if (consume_object) | |
1256 | address_free(address); | |
c0c04a4b YW |
1257 | } |
1258 | ||
3b6a3bde YW |
1259 | r = ipv4acd_configure(existing); |
1260 | if (r < 0) | |
1261 | return r; | |
1262 | ||
435910b3 | 1263 | log_address_debug(existing, "Requesting", link); |
09d09207 YW |
1264 | r = link_queue_request_safe(link, REQUEST_TYPE_ADDRESS, |
1265 | existing, NULL, | |
1266 | address_hash_func, | |
1267 | address_compare_func, | |
1268 | address_process_request, | |
1269 | message_counter, netlink_handler, ret); | |
c0c04a4b YW |
1270 | if (r < 0) |
1271 | return log_link_warning_errno(link, r, "Failed to request address: %m"); | |
3b6a3bde YW |
1272 | if (r == 0) |
1273 | return 0; | |
1274 | ||
1275 | address_enter_requesting(existing); | |
1276 | ||
1277 | return 1; | |
76c5a0f2 YW |
1278 | } |
1279 | ||
80d62d4f | 1280 | static int static_address_handler(sd_netlink *rtnl, sd_netlink_message *m, Request *req, Link *link, Address *address) { |
e1e4cd1e YW |
1281 | int r; |
1282 | ||
1283 | assert(link); | |
e1e4cd1e YW |
1284 | |
1285 | r = address_configure_handler_internal(rtnl, m, link, "Failed to set static address"); | |
1286 | if (r <= 0) | |
1287 | return r; | |
1288 | ||
1289 | if (link->static_address_messages == 0) { | |
1290 | log_link_debug(link, "Addresses set"); | |
1291 | link->static_addresses_configured = true; | |
1292 | link_check_ready(link); | |
1293 | } | |
1294 | ||
1295 | return 1; | |
1296 | } | |
1297 | ||
8c29f484 | 1298 | int link_request_static_address(Link *link, Address *address, bool consume) { |
8c29f484 YW |
1299 | assert(link); |
1300 | assert(address); | |
3b6a3bde | 1301 | assert(address->source == NETWORK_CONFIG_SOURCE_STATIC); |
8c29f484 | 1302 | |
3b6a3bde YW |
1303 | return link_request_address(link, address, consume, &link->static_address_messages, |
1304 | static_address_handler, NULL); | |
8c29f484 YW |
1305 | } |
1306 | ||
76c5a0f2 YW |
1307 | int link_request_static_addresses(Link *link) { |
1308 | Address *a; | |
682c65b0 YW |
1309 | int r; |
1310 | ||
1311 | assert(link); | |
1312 | assert(link->network); | |
1313 | ||
76c5a0f2 | 1314 | link->static_addresses_configured = false; |
682c65b0 | 1315 | |
76c5a0f2 | 1316 | ORDERED_HASHMAP_FOREACH(a, link->network->addresses_by_section) { |
8c29f484 | 1317 | r = link_request_static_address(link, a, false); |
682c65b0 YW |
1318 | if (r < 0) |
1319 | return r; | |
1320 | } | |
1321 | ||
3b6a3bde YW |
1322 | r = link_request_radv_addresses(link); |
1323 | if (r < 0) | |
1324 | return r; | |
0017ba31 | 1325 | |
3b6a3bde YW |
1326 | r = link_request_dhcp_server_address(link); |
1327 | if (r < 0) | |
1328 | return r; | |
0017ba31 | 1329 | |
76c5a0f2 YW |
1330 | if (link->static_address_messages == 0) { |
1331 | link->static_addresses_configured = true; | |
1332 | link_check_ready(link); | |
682c65b0 YW |
1333 | } else { |
1334 | log_link_debug(link, "Setting addresses"); | |
1335 | link_set_state(link, LINK_STATE_CONFIGURING); | |
1336 | } | |
1337 | ||
1338 | return 0; | |
1339 | } | |
1340 | ||
e1e4cd1e YW |
1341 | void address_cancel_request(Address *address) { |
1342 | Request req; | |
1343 | ||
1344 | assert(address); | |
1345 | assert(address->link); | |
1346 | ||
1347 | if (!address_is_requesting(address)) | |
1348 | return; | |
1349 | ||
1350 | req = (Request) { | |
1351 | .link = address->link, | |
1352 | .type = REQUEST_TYPE_ADDRESS, | |
09d09207 YW |
1353 | .userdata = address, |
1354 | .hash_func = (hash_func_t) address_hash_func, | |
1355 | .compare_func = (compare_func_t) address_compare_func, | |
e1e4cd1e YW |
1356 | }; |
1357 | ||
e26d3d40 | 1358 | request_detach(address->link->manager, &req); |
e1e4cd1e YW |
1359 | address_cancel_requesting(address); |
1360 | } | |
1361 | ||
e1fc2c43 | 1362 | int manager_rtnl_process_address(sd_netlink *rtnl, sd_netlink_message *message, Manager *m) { |
fe841414 | 1363 | _cleanup_(address_freep) Address *tmp = NULL; |
16bc8635 | 1364 | struct ifa_cacheinfo cinfo; |
e1fc2c43 YW |
1365 | Link *link = NULL; |
1366 | uint16_t type; | |
e1fc2c43 | 1367 | Address *address = NULL; |
fe841414 | 1368 | int ifindex, r; |
e1fc2c43 YW |
1369 | |
1370 | assert(rtnl); | |
1371 | assert(message); | |
1372 | assert(m); | |
1373 | ||
1374 | if (sd_netlink_message_is_error(message)) { | |
1375 | r = sd_netlink_message_get_errno(message); | |
1376 | if (r < 0) | |
1377 | log_message_warning_errno(message, r, "rtnl: failed to receive address message, ignoring"); | |
1378 | ||
1379 | return 0; | |
1380 | } | |
1381 | ||
1382 | r = sd_netlink_message_get_type(message, &type); | |
1383 | if (r < 0) { | |
1384 | log_warning_errno(r, "rtnl: could not get message type, ignoring: %m"); | |
1385 | return 0; | |
1386 | } else if (!IN_SET(type, RTM_NEWADDR, RTM_DELADDR)) { | |
1387 | log_warning("rtnl: received unexpected message type %u when processing address, ignoring.", type); | |
1388 | return 0; | |
1389 | } | |
1390 | ||
1391 | r = sd_rtnl_message_addr_get_ifindex(message, &ifindex); | |
1392 | if (r < 0) { | |
1393 | log_warning_errno(r, "rtnl: could not get ifindex from message, ignoring: %m"); | |
1394 | return 0; | |
1395 | } else if (ifindex <= 0) { | |
1396 | log_warning("rtnl: received address message with invalid ifindex %d, ignoring.", ifindex); | |
1397 | return 0; | |
1398 | } | |
1399 | ||
6eab614d | 1400 | r = link_get_by_index(m, ifindex, &link); |
e1fc2c43 YW |
1401 | if (r < 0 || !link) { |
1402 | /* when enumerating we might be out of sync, but we will get the address again, so just | |
1403 | * ignore it */ | |
1404 | if (!m->enumerating) | |
1405 | log_warning("rtnl: received address for link '%d' we don't know about, ignoring.", ifindex); | |
1406 | return 0; | |
1407 | } | |
1408 | ||
fe841414 YW |
1409 | r = address_new(&tmp); |
1410 | if (r < 0) | |
1411 | return log_oom(); | |
1412 | ||
1413 | r = sd_rtnl_message_addr_get_family(message, &tmp->family); | |
e1fc2c43 YW |
1414 | if (r < 0) { |
1415 | log_link_warning(link, "rtnl: received address message without family, ignoring."); | |
1416 | return 0; | |
fe841414 YW |
1417 | } else if (!IN_SET(tmp->family, AF_INET, AF_INET6)) { |
1418 | log_link_debug(link, "rtnl: received address message with invalid family '%i', ignoring.", tmp->family); | |
e1fc2c43 YW |
1419 | return 0; |
1420 | } | |
1421 | ||
fe841414 | 1422 | r = sd_rtnl_message_addr_get_prefixlen(message, &tmp->prefixlen); |
e1fc2c43 | 1423 | if (r < 0) { |
9a0ad16b | 1424 | log_link_warning_errno(link, r, "rtnl: received address message without prefixlen, ignoring: %m"); |
e1fc2c43 YW |
1425 | return 0; |
1426 | } | |
1427 | ||
fe841414 | 1428 | r = sd_rtnl_message_addr_get_scope(message, &tmp->scope); |
e1fc2c43 | 1429 | if (r < 0) { |
9a0ad16b | 1430 | log_link_warning_errno(link, r, "rtnl: received address message without scope, ignoring: %m"); |
e1fc2c43 YW |
1431 | return 0; |
1432 | } | |
1433 | ||
0828a386 | 1434 | r = sd_netlink_message_read_u32(message, IFA_FLAGS, &tmp->flags); |
8ed68422 YW |
1435 | if (r == -ENODATA) { |
1436 | unsigned char flags; | |
1437 | ||
1438 | /* For old kernels. */ | |
1439 | r = sd_rtnl_message_addr_get_flags(message, &flags); | |
1440 | if (r >= 0) | |
1441 | tmp->flags = flags; | |
1442 | } | |
e1fc2c43 | 1443 | if (r < 0) { |
9a0ad16b | 1444 | log_link_warning_errno(link, r, "rtnl: received address message without flags, ignoring: %m"); |
e1fc2c43 YW |
1445 | return 0; |
1446 | } | |
1447 | ||
fe841414 | 1448 | switch (tmp->family) { |
e1fc2c43 | 1449 | case AF_INET: |
fe841414 | 1450 | r = sd_netlink_message_read_in_addr(message, IFA_LOCAL, &tmp->in_addr.in); |
e1fc2c43 YW |
1451 | if (r < 0) { |
1452 | log_link_warning_errno(link, r, "rtnl: received address message without valid address, ignoring: %m"); | |
1453 | return 0; | |
1454 | } | |
1455 | ||
fe841414 YW |
1456 | r = sd_netlink_message_read_in_addr(message, IFA_ADDRESS, &tmp->in_addr_peer.in); |
1457 | if (r < 0 && r != -ENODATA) { | |
1458 | log_link_warning_errno(link, r, "rtnl: could not get peer address from address message, ignoring: %m"); | |
1459 | return 0; | |
1460 | } else if (r >= 0) { | |
1461 | if (in4_addr_equal(&tmp->in_addr.in, &tmp->in_addr_peer.in)) | |
1462 | tmp->in_addr_peer = IN_ADDR_NULL; | |
fe841414 YW |
1463 | } |
1464 | ||
1465 | r = sd_netlink_message_read_in_addr(message, IFA_BROADCAST, &tmp->broadcast); | |
1466 | if (r < 0 && r != -ENODATA) { | |
1467 | log_link_warning_errno(link, r, "rtnl: could not get broadcast from address message, ignoring: %m"); | |
1468 | return 0; | |
1469 | } | |
1470 | ||
1471 | r = sd_netlink_message_read_string_strdup(message, IFA_LABEL, &tmp->label); | |
1472 | if (r < 0 && r != -ENODATA) { | |
1473 | log_link_warning_errno(link, r, "rtnl: could not get label from address message, ignoring: %m"); | |
1474 | return 0; | |
1475 | } else if (r >= 0 && streq_ptr(tmp->label, link->ifname)) | |
1476 | tmp->label = mfree(tmp->label); | |
1477 | ||
e1fc2c43 YW |
1478 | break; |
1479 | ||
1480 | case AF_INET6: | |
fe841414 YW |
1481 | r = sd_netlink_message_read_in6_addr(message, IFA_LOCAL, &tmp->in_addr.in6); |
1482 | if (r >= 0) { | |
1483 | /* Have peer address. */ | |
1484 | r = sd_netlink_message_read_in6_addr(message, IFA_ADDRESS, &tmp->in_addr_peer.in6); | |
1485 | if (r < 0) { | |
1486 | log_link_warning_errno(link, r, "rtnl: could not get peer address from address message, ignoring: %m"); | |
1487 | return 0; | |
1488 | } | |
fe841414 YW |
1489 | } else if (r == -ENODATA) { |
1490 | /* Does not have peer address. */ | |
1491 | r = sd_netlink_message_read_in6_addr(message, IFA_ADDRESS, &tmp->in_addr.in6); | |
1492 | if (r < 0) { | |
1493 | log_link_warning_errno(link, r, "rtnl: received address message without valid address, ignoring: %m"); | |
1494 | return 0; | |
1495 | } | |
1496 | } else { | |
1497 | log_link_warning_errno(link, r, "rtnl: could not get local address from address message, ignoring: %m"); | |
e1fc2c43 YW |
1498 | return 0; |
1499 | } | |
1500 | ||
1501 | break; | |
1502 | ||
1503 | default: | |
04499a70 | 1504 | assert_not_reached(); |
e1fc2c43 YW |
1505 | } |
1506 | ||
16bc8635 | 1507 | r = sd_netlink_message_read_cache_info(message, IFA_CACHEINFO, &cinfo); |
e1fc2c43 YW |
1508 | if (r < 0 && r != -ENODATA) { |
1509 | log_link_warning_errno(link, r, "rtnl: cannot get IFA_CACHEINFO attribute, ignoring: %m"); | |
1510 | return 0; | |
24f50382 | 1511 | } |
e1fc2c43 | 1512 | |
fe841414 | 1513 | (void) address_get(link, tmp, &address); |
e1fc2c43 YW |
1514 | |
1515 | switch (type) { | |
1516 | case RTM_NEWADDR: | |
3b6a3bde | 1517 | if (address) { |
f9831557 | 1518 | /* update flags and etc. */ |
42f8b6a8 YW |
1519 | r = address_equalify(address, tmp); |
1520 | if (r < 0) { | |
1521 | log_link_warning_errno(link, r, "Failed to update properties of address %s, ignoring: %m", | |
1522 | IN_ADDR_PREFIX_TO_STRING(address->family, &address->in_addr, address->prefixlen)); | |
1523 | return 0; | |
1524 | } | |
f9831557 YW |
1525 | address->flags = tmp->flags; |
1526 | address->scope = tmp->scope; | |
def4741b | 1527 | address_set_lifetime(m, address, &cinfo); |
3b6a3bde | 1528 | address_enter_configured(address); |
f9831557 | 1529 | log_address_debug(address, "Received updated", link); |
3b6a3bde | 1530 | } else { |
def4741b | 1531 | address_set_lifetime(m, tmp, &cinfo); |
3b6a3bde YW |
1532 | address_enter_configured(tmp); |
1533 | log_address_debug(tmp, "Received new", link); | |
1534 | ||
1535 | r = address_add(link, tmp); | |
e1fc2c43 | 1536 | if (r < 0) { |
5380707a | 1537 | log_link_warning_errno(link, r, "Failed to remember foreign address %s, ignoring: %m", |
def4741b | 1538 | IN_ADDR_PREFIX_TO_STRING(tmp->family, &tmp->in_addr, tmp->prefixlen)); |
e1fc2c43 | 1539 | return 0; |
24f50382 | 1540 | } |
3b6a3bde YW |
1541 | |
1542 | address = TAKE_PTR(tmp); | |
e1fc2c43 YW |
1543 | } |
1544 | ||
1545 | /* address_update() logs internally, so we don't need to here. */ | |
f9831557 | 1546 | r = address_update(address); |
e1fc2c43 YW |
1547 | if (r < 0) |
1548 | link_enter_failed(link); | |
1549 | ||
1550 | break; | |
1551 | ||
1552 | case RTM_DELADDR: | |
3b6a3bde YW |
1553 | if (address) { |
1554 | address_enter_removed(address); | |
1555 | log_address_debug(address, address->state == 0 ? "Forgetting" : "Removed", link); | |
1556 | (void) address_drop(address); | |
1557 | } else | |
1558 | log_address_debug(tmp, "Kernel removed unknown", link); | |
e1fc2c43 YW |
1559 | |
1560 | break; | |
1561 | ||
1562 | default: | |
04499a70 | 1563 | assert_not_reached(); |
e1fc2c43 YW |
1564 | } |
1565 | ||
1566 | return 1; | |
1567 | } | |
1568 | ||
44e7b949 LP |
1569 | int config_parse_broadcast( |
1570 | const char *unit, | |
eb0ea358 TG |
1571 | const char *filename, |
1572 | unsigned line, | |
1573 | const char *section, | |
1574 | unsigned section_line, | |
1575 | const char *lvalue, | |
1576 | int ltype, | |
1577 | const char *rvalue, | |
1578 | void *data, | |
1579 | void *userdata) { | |
44e7b949 | 1580 | |
eb0ea358 | 1581 | Network *network = userdata; |
fcbf4cb7 | 1582 | _cleanup_(address_free_or_set_invalidp) Address *n = NULL; |
94af46fc | 1583 | union in_addr_union u; |
eb0ea358 TG |
1584 | int r; |
1585 | ||
1586 | assert(filename); | |
1587 | assert(section); | |
1588 | assert(lvalue); | |
1589 | assert(rvalue); | |
1590 | assert(data); | |
1591 | ||
f4859fc7 | 1592 | r = address_new_static(network, filename, section_line, &n); |
d96edb2c YW |
1593 | if (r == -ENOMEM) |
1594 | return log_oom(); | |
1595 | if (r < 0) { | |
1596 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1597 | "Failed to allocate new address, ignoring assignment: %m"); | |
1598 | return 0; | |
1599 | } | |
eb0ea358 | 1600 | |
832583ad YW |
1601 | if (isempty(rvalue)) { |
1602 | /* The broadcast address will be calculated based on Address=, and set if the link is | |
1603 | * not a wireguard interface. Here, we do not check or set n->family. */ | |
1604 | n->broadcast = (struct in_addr) {}; | |
1605 | n->set_broadcast = -1; | |
1606 | TAKE_PTR(n); | |
1607 | return 0; | |
1608 | } | |
1609 | ||
1610 | r = parse_boolean(rvalue); | |
1611 | if (r >= 0) { | |
1612 | /* The broadcast address will be calculated based on Address=. Here, we do not check or | |
1613 | * set n->family. */ | |
1614 | n->broadcast = (struct in_addr) {}; | |
1615 | n->set_broadcast = r; | |
1616 | TAKE_PTR(n); | |
1617 | return 0; | |
1618 | } | |
1619 | ||
482e2ac1 | 1620 | if (n->family == AF_INET6) { |
d96edb2c | 1621 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
2850cd40 | 1622 | "Broadcast is not valid for IPv6 addresses, ignoring assignment: %s", rvalue); |
482e2ac1 TG |
1623 | return 0; |
1624 | } | |
1625 | ||
94af46fc | 1626 | r = in_addr_from_string(AF_INET, rvalue, &u); |
eb0ea358 | 1627 | if (r < 0) { |
d96edb2c | 1628 | log_syntax(unit, LOG_WARNING, filename, line, r, |
2850cd40 | 1629 | "Broadcast is invalid, ignoring assignment: %s", rvalue); |
eb0ea358 TG |
1630 | return 0; |
1631 | } | |
832583ad YW |
1632 | if (in4_addr_is_null(&u.in)) { |
1633 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
1634 | "Broadcast cannot be ANY address, ignoring assignment: %s", rvalue); | |
1635 | return 0; | |
1636 | } | |
eb0ea358 | 1637 | |
94af46fc | 1638 | n->broadcast = u.in; |
832583ad | 1639 | n->set_broadcast = true; |
44e7b949 | 1640 | n->family = AF_INET; |
dea161d9 | 1641 | TAKE_PTR(n); |
eb0ea358 TG |
1642 | |
1643 | return 0; | |
1644 | } | |
1645 | ||
f5ee7d74 YW |
1646 | int config_parse_address( |
1647 | const char *unit, | |
f579559b TG |
1648 | const char *filename, |
1649 | unsigned line, | |
1650 | const char *section, | |
71a61510 | 1651 | unsigned section_line, |
f579559b TG |
1652 | const char *lvalue, |
1653 | int ltype, | |
1654 | const char *rvalue, | |
1655 | void *data, | |
1656 | void *userdata) { | |
44e7b949 | 1657 | |
6ae115c1 | 1658 | Network *network = userdata; |
fcbf4cb7 | 1659 | _cleanup_(address_free_or_set_invalidp) Address *n = NULL; |
44e7b949 | 1660 | union in_addr_union buffer; |
b7cb4452 | 1661 | unsigned char prefixlen; |
44e7b949 | 1662 | int r, f; |
f579559b TG |
1663 | |
1664 | assert(filename); | |
6ae115c1 | 1665 | assert(section); |
f579559b TG |
1666 | assert(lvalue); |
1667 | assert(rvalue); | |
1668 | assert(data); | |
1669 | ||
9cd9fc8f YW |
1670 | if (streq(section, "Network")) |
1671 | /* we are not in an Address section, so use line number instead. */ | |
1672 | r = address_new_static(network, filename, line, &n); | |
1673 | else | |
f4859fc7 | 1674 | r = address_new_static(network, filename, section_line, &n); |
d96edb2c YW |
1675 | if (r == -ENOMEM) |
1676 | return log_oom(); | |
1677 | if (r < 0) { | |
1678 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1679 | "Failed to allocate new address, ignoring assignment: %m"); | |
1680 | return 0; | |
1681 | } | |
f579559b TG |
1682 | |
1683 | /* Address=address/prefixlen */ | |
0f707207 YW |
1684 | r = in_addr_prefix_from_string_auto_internal(rvalue, PREFIXLEN_REFUSE, &f, &buffer, &prefixlen); |
1685 | if (r == -ENOANO) { | |
d96edb2c | 1686 | log_syntax(unit, LOG_WARNING, filename, line, r, |
0f707207 YW |
1687 | "An address '%s' is specified without prefix length. " |
1688 | "The behavior of parsing addresses without prefix length will be changed in the future release. " | |
1689 | "Please specify prefix length explicitly.", rvalue); | |
1690 | ||
1691 | r = in_addr_prefix_from_string_auto_internal(rvalue, PREFIXLEN_LEGACY, &f, &buffer, &prefixlen); | |
1692 | } | |
f579559b | 1693 | if (r < 0) { |
d96edb2c | 1694 | log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid address '%s', ignoring assignment: %m", rvalue); |
f579559b TG |
1695 | return 0; |
1696 | } | |
1697 | ||
44e7b949 | 1698 | if (n->family != AF_UNSPEC && f != n->family) { |
d96edb2c | 1699 | log_syntax(unit, LOG_WARNING, filename, line, 0, "Address is incompatible, ignoring assignment: %s", rvalue); |
44e7b949 LP |
1700 | return 0; |
1701 | } | |
1702 | ||
c9207ff3 YW |
1703 | if (in_addr_is_null(f, &buffer)) { |
1704 | /* Will use address from address pool. Note that for ipv6 case, prefix of the address | |
1705 | * pool is 8, but 40 bit is used by the global ID and 16 bit by the subnet ID. So, | |
1706 | * let's limit the prefix length to 64 or larger. See RFC4193. */ | |
1707 | if ((f == AF_INET && prefixlen < 8) || | |
1708 | (f == AF_INET6 && prefixlen < 64)) { | |
d96edb2c | 1709 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
c9207ff3 YW |
1710 | "Null address with invalid prefixlen='%u', ignoring assignment: %s", |
1711 | prefixlen, rvalue); | |
1712 | return 0; | |
1713 | } | |
1714 | } | |
1715 | ||
44e7b949 | 1716 | n->family = f; |
b7cb4452 | 1717 | n->prefixlen = prefixlen; |
44e7b949 LP |
1718 | |
1719 | if (streq(lvalue, "Address")) | |
1720 | n->in_addr = buffer; | |
1721 | else | |
1722 | n->in_addr_peer = buffer; | |
1723 | ||
dea161d9 | 1724 | TAKE_PTR(n); |
f579559b TG |
1725 | return 0; |
1726 | } | |
6ae115c1 | 1727 | |
d31645ad LP |
1728 | int config_parse_label( |
1729 | const char *unit, | |
6ae115c1 TG |
1730 | const char *filename, |
1731 | unsigned line, | |
1732 | const char *section, | |
1733 | unsigned section_line, | |
1734 | const char *lvalue, | |
1735 | int ltype, | |
1736 | const char *rvalue, | |
1737 | void *data, | |
1738 | void *userdata) { | |
d31645ad | 1739 | |
fcbf4cb7 | 1740 | _cleanup_(address_free_or_set_invalidp) Address *n = NULL; |
d31645ad | 1741 | Network *network = userdata; |
6ae115c1 TG |
1742 | int r; |
1743 | ||
1744 | assert(filename); | |
1745 | assert(section); | |
1746 | assert(lvalue); | |
1747 | assert(rvalue); | |
1748 | assert(data); | |
1749 | ||
f4859fc7 | 1750 | r = address_new_static(network, filename, section_line, &n); |
d96edb2c YW |
1751 | if (r == -ENOMEM) |
1752 | return log_oom(); | |
1753 | if (r < 0) { | |
1754 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1755 | "Failed to allocate new address, ignoring assignment: %m"); | |
1756 | return 0; | |
1757 | } | |
6ae115c1 | 1758 | |
a87d19fe | 1759 | if (!address_label_valid(rvalue)) { |
d96edb2c | 1760 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
2850cd40 | 1761 | "Interface label is too long or invalid, ignoring assignment: %s", rvalue); |
6ae115c1 TG |
1762 | return 0; |
1763 | } | |
1764 | ||
d31645ad LP |
1765 | r = free_and_strdup(&n->label, rvalue); |
1766 | if (r < 0) | |
1767 | return log_oom(); | |
6ae115c1 | 1768 | |
dea161d9 | 1769 | TAKE_PTR(n); |
6ae115c1 TG |
1770 | return 0; |
1771 | } | |
ce6c77eb | 1772 | |
f5ee7d74 YW |
1773 | int config_parse_lifetime( |
1774 | const char *unit, | |
1775 | const char *filename, | |
1776 | unsigned line, | |
1777 | const char *section, | |
1778 | unsigned section_line, | |
1779 | const char *lvalue, | |
1780 | int ltype, | |
1781 | const char *rvalue, | |
1782 | void *data, | |
1783 | void *userdata) { | |
1784 | ||
b5834a0b | 1785 | Network *network = userdata; |
fcbf4cb7 | 1786 | _cleanup_(address_free_or_set_invalidp) Address *n = NULL; |
16bc8635 | 1787 | usec_t k; |
b5834a0b SS |
1788 | int r; |
1789 | ||
1790 | assert(filename); | |
1791 | assert(section); | |
1792 | assert(lvalue); | |
1793 | assert(rvalue); | |
1794 | assert(data); | |
1795 | ||
f4859fc7 | 1796 | r = address_new_static(network, filename, section_line, &n); |
d96edb2c YW |
1797 | if (r == -ENOMEM) |
1798 | return log_oom(); | |
1799 | if (r < 0) { | |
1800 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1801 | "Failed to allocate new address, ignoring assignment: %m"); | |
1802 | return 0; | |
1803 | } | |
b5834a0b | 1804 | |
10b20e5a ZJS |
1805 | /* We accept only "forever", "infinity", empty, or "0". */ |
1806 | if (STR_IN_SET(rvalue, "forever", "infinity", "")) | |
16bc8635 | 1807 | k = USEC_INFINITY; |
33680b0a YW |
1808 | else if (streq(rvalue, "0")) |
1809 | k = 0; | |
1810 | else { | |
d96edb2c | 1811 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
33680b0a | 1812 | "Invalid PreferredLifetime= value, ignoring: %s", rvalue); |
b5834a0b SS |
1813 | return 0; |
1814 | } | |
1815 | ||
16bc8635 | 1816 | n->lifetime_preferred_usec = k; |
d2735796 | 1817 | TAKE_PTR(n); |
b5834a0b SS |
1818 | |
1819 | return 0; | |
1820 | } | |
1821 | ||
f5ee7d74 YW |
1822 | int config_parse_address_flags( |
1823 | const char *unit, | |
1824 | const char *filename, | |
1825 | unsigned line, | |
1826 | const char *section, | |
1827 | unsigned section_line, | |
1828 | const char *lvalue, | |
1829 | int ltype, | |
1830 | const char *rvalue, | |
1831 | void *data, | |
1832 | void *userdata) { | |
1833 | ||
e63be084 | 1834 | Network *network = userdata; |
fcbf4cb7 | 1835 | _cleanup_(address_free_or_set_invalidp) Address *n = NULL; |
e63be084 SS |
1836 | int r; |
1837 | ||
1838 | assert(filename); | |
1839 | assert(section); | |
1840 | assert(lvalue); | |
1841 | assert(rvalue); | |
1842 | assert(data); | |
1843 | ||
f4859fc7 | 1844 | r = address_new_static(network, filename, section_line, &n); |
d96edb2c YW |
1845 | if (r == -ENOMEM) |
1846 | return log_oom(); | |
1847 | if (r < 0) { | |
1848 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1849 | "Failed to allocate new address, ignoring assignment: %m"); | |
1850 | return 0; | |
1851 | } | |
e63be084 SS |
1852 | |
1853 | r = parse_boolean(rvalue); | |
1854 | if (r < 0) { | |
d96edb2c | 1855 | log_syntax(unit, LOG_WARNING, filename, line, r, |
051e77ca | 1856 | "Failed to parse %s=, ignoring: %s", lvalue, rvalue); |
e63be084 SS |
1857 | return 0; |
1858 | } | |
1859 | ||
eaff204f YW |
1860 | if (streq(lvalue, "AddPrefixRoute")) |
1861 | r = !r; | |
1862 | ||
1863 | SET_FLAG(n->flags, ltype, r); | |
e63be084 | 1864 | |
dea161d9 | 1865 | TAKE_PTR(n); |
e63be084 SS |
1866 | return 0; |
1867 | } | |
1868 | ||
f5ee7d74 YW |
1869 | int config_parse_address_scope( |
1870 | const char *unit, | |
1871 | const char *filename, | |
1872 | unsigned line, | |
1873 | const char *section, | |
1874 | unsigned section_line, | |
1875 | const char *lvalue, | |
1876 | int ltype, | |
1877 | const char *rvalue, | |
1878 | void *data, | |
1879 | void *userdata) { | |
1880 | ||
2959fb07 | 1881 | Network *network = userdata; |
fcbf4cb7 | 1882 | _cleanup_(address_free_or_set_invalidp) Address *n = NULL; |
2959fb07 SS |
1883 | int r; |
1884 | ||
1885 | assert(filename); | |
1886 | assert(section); | |
1887 | assert(lvalue); | |
1888 | assert(rvalue); | |
1889 | assert(data); | |
1890 | ||
1891 | r = address_new_static(network, filename, section_line, &n); | |
d96edb2c YW |
1892 | if (r == -ENOMEM) |
1893 | return log_oom(); | |
1894 | if (r < 0) { | |
1895 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1896 | "Failed to allocate new address, ignoring assignment: %m"); | |
1897 | return 0; | |
1898 | } | |
2959fb07 | 1899 | |
d8c472f2 YW |
1900 | r = route_scope_from_string(rvalue); |
1901 | if (r < 0) { | |
1902 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1903 | "Could not parse address scope \"%s\", ignoring assignment: %m", rvalue); | |
1904 | return 0; | |
2959fb07 SS |
1905 | } |
1906 | ||
d8c472f2 | 1907 | n->scope = r; |
07336a06 | 1908 | n->scope_set = true; |
dea161d9 | 1909 | TAKE_PTR(n); |
2959fb07 SS |
1910 | return 0; |
1911 | } | |
1912 | ||
c4ff0629 YW |
1913 | int config_parse_address_route_metric( |
1914 | const char *unit, | |
1915 | const char *filename, | |
1916 | unsigned line, | |
1917 | const char *section, | |
1918 | unsigned section_line, | |
1919 | const char *lvalue, | |
1920 | int ltype, | |
1921 | const char *rvalue, | |
1922 | void *data, | |
1923 | void *userdata) { | |
1924 | ||
1925 | Network *network = userdata; | |
1926 | _cleanup_(address_free_or_set_invalidp) Address *n = NULL; | |
1927 | int r; | |
1928 | ||
1929 | assert(filename); | |
1930 | assert(section); | |
1931 | assert(lvalue); | |
1932 | assert(rvalue); | |
1933 | assert(data); | |
1934 | ||
1935 | r = address_new_static(network, filename, section_line, &n); | |
1936 | if (r == -ENOMEM) | |
1937 | return log_oom(); | |
1938 | if (r < 0) { | |
1939 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1940 | "Failed to allocate new address, ignoring assignment: %m"); | |
1941 | return 0; | |
1942 | } | |
1943 | ||
1944 | r = safe_atou32(rvalue, &n->route_metric); | |
1945 | if (r < 0) { | |
1946 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1947 | "Could not parse %s=, ignoring assignment: %s", lvalue, rvalue); | |
1948 | return 0; | |
1949 | } | |
1950 | ||
1951 | TAKE_PTR(n); | |
1952 | return 0; | |
1953 | } | |
1954 | ||
051e77ca SS |
1955 | int config_parse_duplicate_address_detection( |
1956 | const char *unit, | |
1957 | const char *filename, | |
1958 | unsigned line, | |
1959 | const char *section, | |
1960 | unsigned section_line, | |
1961 | const char *lvalue, | |
1962 | int ltype, | |
1963 | const char *rvalue, | |
1964 | void *data, | |
1965 | void *userdata) { | |
f5ee7d74 | 1966 | |
051e77ca SS |
1967 | Network *network = userdata; |
1968 | _cleanup_(address_free_or_set_invalidp) Address *n = NULL; | |
051e77ca SS |
1969 | int r; |
1970 | ||
1971 | assert(filename); | |
1972 | assert(section); | |
1973 | assert(lvalue); | |
1974 | assert(rvalue); | |
1975 | assert(data); | |
1976 | ||
1977 | r = address_new_static(network, filename, section_line, &n); | |
d96edb2c YW |
1978 | if (r == -ENOMEM) |
1979 | return log_oom(); | |
1980 | if (r < 0) { | |
1981 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1982 | "Failed to allocate new address, ignoring assignment: %m"); | |
1983 | return 0; | |
1984 | } | |
051e77ca SS |
1985 | |
1986 | r = parse_boolean(rvalue); | |
1987 | if (r >= 0) { | |
1988 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
1989 | "For historical reasons, %s=%s means %s=%s. " | |
1990 | "Please use 'both', 'ipv4', 'ipv6' or 'none' instead.", | |
1991 | lvalue, rvalue, lvalue, r ? "none" : "both"); | |
1992 | n->duplicate_address_detection = r ? ADDRESS_FAMILY_NO : ADDRESS_FAMILY_YES; | |
1993 | n = NULL; | |
1994 | return 0; | |
1995 | } | |
1996 | ||
7211c853 | 1997 | AddressFamily a = duplicate_address_detection_address_family_from_string(rvalue); |
051e77ca | 1998 | if (a < 0) { |
7211c853 | 1999 | log_syntax(unit, LOG_WARNING, filename, line, a, |
051e77ca SS |
2000 | "Failed to parse %s=, ignoring: %s", lvalue, rvalue); |
2001 | return 0; | |
2002 | } | |
051e77ca | 2003 | n->duplicate_address_detection = a; |
7211c853 | 2004 | |
dea161d9 | 2005 | TAKE_PTR(n); |
051e77ca SS |
2006 | return 0; |
2007 | } | |
2008 | ||
4b3590c3 TM |
2009 | int config_parse_address_netlabel( |
2010 | const char *unit, | |
2011 | const char *filename, | |
2012 | unsigned line, | |
2013 | const char *section, | |
2014 | unsigned section_line, | |
2015 | const char *lvalue, | |
2016 | int ltype, | |
2017 | const char *rvalue, | |
2018 | void *data, | |
2019 | void *userdata) { | |
2020 | ||
2021 | Network *network = userdata; | |
2022 | _cleanup_(address_free_or_set_invalidp) Address *n = NULL; | |
2023 | int r; | |
2024 | ||
2025 | assert(filename); | |
2026 | assert(section); | |
2027 | assert(lvalue); | |
2028 | assert(rvalue); | |
2029 | assert(data); | |
2030 | assert(network); | |
2031 | ||
2032 | r = address_new_static(network, filename, section_line, &n); | |
2033 | if (r == -ENOMEM) | |
2034 | return log_oom(); | |
2035 | if (r < 0) { | |
2036 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2037 | "Failed to allocate new address, ignoring assignment: %m"); | |
2038 | return 0; | |
2039 | } | |
2040 | ||
2041 | r = config_parse_string(unit, filename, line, section, section_line, | |
2042 | lvalue, CONFIG_PARSE_STRING_SAFE, rvalue, &n->netlabel, network); | |
2043 | if (r < 0) | |
2044 | return r; | |
2045 | ||
2046 | TAKE_PTR(n); | |
2047 | return 0; | |
2048 | } | |
2049 | ||
32400c2f | 2050 | static int address_section_verify(Address *address) { |
fcbf4cb7 YW |
2051 | if (section_is_invalid(address->section)) |
2052 | return -EINVAL; | |
2053 | ||
2054 | if (address->family == AF_UNSPEC) { | |
2055 | assert(address->section); | |
2056 | ||
2057 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), | |
2058 | "%s: Address section without Address= field configured. " | |
2059 | "Ignoring [Address] section from line %u.", | |
2060 | address->section->filename, address->section->line); | |
2061 | } | |
2062 | ||
2859932b YW |
2063 | assert(IN_SET(address->family, AF_INET, AF_INET6)); |
2064 | ||
e680486d YW |
2065 | if (in4_addr_is_set(&address->broadcast) && |
2066 | (address->family == AF_INET6 || address->prefixlen > 30 || | |
2067 | in_addr_is_set(address->family, &address->in_addr_peer))) { | |
2068 | log_warning("%s: broadcast address is set for an IPv6 address, " | |
2069 | "an IPv4 address with peer address, or with prefix length larger than 30. " | |
fe841414 YW |
2070 | "Ignoring Broadcast= setting in the [Address] section from line %u.", |
2071 | address->section->filename, address->section->line); | |
2072 | ||
2073 | address->broadcast.s_addr = 0; | |
2074 | } | |
2075 | ||
2076 | if (address->family == AF_INET6 && address->label) { | |
2077 | log_warning("%s: address label is set for IPv6 address in the [Address] section from line %u. " | |
2078 | "Ignoring Label= setting.", | |
2079 | address->section->filename, address->section->line); | |
2080 | ||
2081 | address->label = mfree(address->label); | |
2082 | } | |
2083 | ||
20228b6d YW |
2084 | if (!address->scope_set) { |
2085 | if (in_addr_is_localhost(address->family, &address->in_addr) > 0) | |
2086 | address->scope = RT_SCOPE_HOST; | |
2087 | else if (in_addr_is_link_local(address->family, &address->in_addr) > 0) | |
2088 | address->scope = RT_SCOPE_LINK; | |
2089 | } | |
07336a06 | 2090 | |
2859932b YW |
2091 | if (address->duplicate_address_detection < 0) { |
2092 | if (address->family == AF_INET6) | |
2093 | address->duplicate_address_detection = ADDRESS_FAMILY_IPV6; | |
2094 | else if (in4_addr_is_link_local(&address->in_addr.in)) | |
2095 | address->duplicate_address_detection = ADDRESS_FAMILY_IPV4; | |
2096 | else | |
2097 | address->duplicate_address_detection = ADDRESS_FAMILY_NO; | |
2098 | } else if (address->duplicate_address_detection == ADDRESS_FAMILY_IPV6 && address->family == AF_INET) | |
2099 | log_warning("%s: DuplicateAddressDetection=ipv6 is specified for IPv4 address, ignoring.", | |
2100 | address->section->filename); | |
2101 | else if (address->duplicate_address_detection == ADDRESS_FAMILY_IPV4 && address->family == AF_INET6) | |
2102 | log_warning("%s: DuplicateAddressDetection=ipv4 is specified for IPv6 address, ignoring.", | |
2103 | address->section->filename); | |
2104 | ||
bd5146c6 YW |
2105 | if (address->family == AF_INET6 && |
2106 | !FLAGS_SET(address->duplicate_address_detection, ADDRESS_FAMILY_IPV6)) | |
eaff204f YW |
2107 | address->flags |= IFA_F_NODAD; |
2108 | ||
fcbf4cb7 YW |
2109 | return 0; |
2110 | } | |
32400c2f | 2111 | |
50783f91 YW |
2112 | int network_drop_invalid_addresses(Network *network) { |
2113 | _cleanup_set_free_ Set *addresses = NULL; | |
9cd9fc8f | 2114 | Address *address; |
50783f91 | 2115 | int r; |
32400c2f YW |
2116 | |
2117 | assert(network); | |
2118 | ||
50783f91 YW |
2119 | ORDERED_HASHMAP_FOREACH(address, network->addresses_by_section) { |
2120 | Address *dup; | |
2121 | ||
2122 | if (address_section_verify(address) < 0) { | |
2123 | /* Drop invalid [Address] sections or Address= settings in [Network]. | |
2124 | * Note that address_free() will drop the address from addresses_by_section. */ | |
32400c2f | 2125 | address_free(address); |
50783f91 YW |
2126 | continue; |
2127 | } | |
2128 | ||
2129 | /* Always use the setting specified later. So, remove the previously assigned setting. */ | |
2130 | dup = set_remove(addresses, address); | |
2131 | if (dup) { | |
50783f91 YW |
2132 | log_warning("%s: Duplicated address %s is specified at line %u and %u, " |
2133 | "dropping the address setting specified at line %u.", | |
c71384a9 ZJS |
2134 | dup->section->filename, |
2135 | IN_ADDR_PREFIX_TO_STRING(address->family, &address->in_addr, address->prefixlen), | |
2136 | address->section->line, | |
50783f91 YW |
2137 | dup->section->line, dup->section->line); |
2138 | /* address_free() will drop the address from addresses_by_section. */ | |
2139 | address_free(dup); | |
2140 | } | |
2141 | ||
42f8b6a8 YW |
2142 | /* Use address_kernel_hash_ops, instead of address_kernel_hash_ops_free. Otherwise, the |
2143 | * Address objects will be freed. */ | |
5d003031 | 2144 | r = set_ensure_put(&addresses, &address_kernel_hash_ops, address); |
50783f91 YW |
2145 | if (r < 0) |
2146 | return log_oom(); | |
2147 | assert(r > 0); | |
2148 | } | |
2149 | ||
2150 | return 0; | |
32400c2f | 2151 | } |