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Commit | Line | Data |
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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
091214b6 | 2 | /*** |
810adae9 | 3 | Copyright © 2017 Intel Corporation. All rights reserved. |
091214b6 PF |
4 | ***/ |
5 | ||
6 | #include <netinet/icmp6.h> | |
7 | #include <arpa/inet.h> | |
8 | ||
ca5ad760 | 9 | #include "dns-domain.h" |
b5ce4047 | 10 | #include "networkd-link.h" |
c555a358 | 11 | #include "networkd-manager.h" |
b5ce4047 | 12 | #include "networkd-network.h" |
091214b6 | 13 | #include "networkd-radv.h" |
6e849e95 | 14 | #include "parse-util.h" |
6e849e95 | 15 | #include "string-util.h" |
6b1dec66 | 16 | #include "string-table.h" |
51517f9e | 17 | #include "strv.h" |
6e849e95 | 18 | |
064dfb05 | 19 | Prefix *prefix_free(Prefix *prefix) { |
6e849e95 | 20 | if (!prefix) |
064dfb05 | 21 | return NULL; |
6e849e95 PF |
22 | |
23 | if (prefix->network) { | |
ecb0e85e YW |
24 | assert(prefix->section); |
25 | hashmap_remove(prefix->network->prefixes_by_section, prefix->section); | |
6e849e95 PF |
26 | } |
27 | ||
ecee0abe | 28 | network_config_section_free(prefix->section); |
471e126b | 29 | sd_radv_prefix_unref(prefix->radv_prefix); |
6e849e95 | 30 | |
064dfb05 | 31 | return mfree(prefix); |
6e849e95 PF |
32 | } |
33 | ||
064dfb05 YW |
34 | DEFINE_NETWORK_SECTION_FUNCTIONS(Prefix, prefix_free); |
35 | ||
95081e08 | 36 | static int prefix_new(Prefix **ret) { |
15b8332e | 37 | _cleanup_(prefix_freep) Prefix *prefix = NULL; |
6e849e95 PF |
38 | |
39 | prefix = new0(Prefix, 1); | |
40 | if (!prefix) | |
41 | return -ENOMEM; | |
42 | ||
43 | if (sd_radv_prefix_new(&prefix->radv_prefix) < 0) | |
44 | return -ENOMEM; | |
45 | ||
ae2a15bc | 46 | *ret = TAKE_PTR(prefix); |
6e849e95 PF |
47 | |
48 | return 0; | |
49 | } | |
50 | ||
a8d4a210 | 51 | static int prefix_new_static(Network *network, const char *filename, unsigned section_line, Prefix **ret) { |
8e766630 LP |
52 | _cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL; |
53 | _cleanup_(prefix_freep) Prefix *prefix = NULL; | |
6e849e95 PF |
54 | int r; |
55 | ||
56 | assert(network); | |
57 | assert(ret); | |
ecb0e85e YW |
58 | assert(filename); |
59 | assert(section_line > 0); | |
6e849e95 | 60 | |
ecb0e85e YW |
61 | r = network_config_section_new(filename, section_line, &n); |
62 | if (r < 0) | |
63 | return r; | |
6e849e95 | 64 | |
ecb0e85e YW |
65 | prefix = hashmap_get(network->prefixes_by_section, n); |
66 | if (prefix) { | |
67 | *ret = TAKE_PTR(prefix); | |
68 | return 0; | |
6e849e95 PF |
69 | } |
70 | ||
71 | r = prefix_new(&prefix); | |
72 | if (r < 0) | |
73 | return r; | |
74 | ||
0f7f2769 | 75 | prefix->network = network; |
ecb0e85e | 76 | prefix->section = TAKE_PTR(n); |
6e849e95 | 77 | |
b9eea0a7 | 78 | r = hashmap_ensure_put(&network->prefixes_by_section, &network_config_hash_ops, prefix->section, prefix); |
ecb0e85e YW |
79 | if (r < 0) |
80 | return r; | |
6e849e95 | 81 | |
1cc6c93a | 82 | *ret = TAKE_PTR(prefix); |
6e849e95 PF |
83 | |
84 | return 0; | |
85 | } | |
86 | ||
064dfb05 | 87 | RoutePrefix *route_prefix_free(RoutePrefix *prefix) { |
203d4df5 | 88 | if (!prefix) |
064dfb05 | 89 | return NULL; |
203d4df5 SS |
90 | |
91 | if (prefix->network) { | |
ecb0e85e YW |
92 | assert(prefix->section); |
93 | hashmap_remove(prefix->network->route_prefixes_by_section, prefix->section); | |
203d4df5 SS |
94 | } |
95 | ||
96 | network_config_section_free(prefix->section); | |
471e126b | 97 | sd_radv_route_prefix_unref(prefix->radv_route_prefix); |
203d4df5 | 98 | |
064dfb05 YW |
99 | return mfree(prefix); |
100 | } | |
101 | ||
102 | DEFINE_NETWORK_SECTION_FUNCTIONS(RoutePrefix, route_prefix_free); | |
103 | ||
104 | static int route_prefix_new(RoutePrefix **ret) { | |
105 | _cleanup_(route_prefix_freep) RoutePrefix *prefix = NULL; | |
106 | ||
107 | prefix = new0(RoutePrefix, 1); | |
108 | if (!prefix) | |
109 | return -ENOMEM; | |
110 | ||
111 | if (sd_radv_route_prefix_new(&prefix->radv_route_prefix) < 0) | |
112 | return -ENOMEM; | |
113 | ||
114 | *ret = TAKE_PTR(prefix); | |
115 | ||
116 | return 0; | |
203d4df5 SS |
117 | } |
118 | ||
a8d4a210 | 119 | static int route_prefix_new_static(Network *network, const char *filename, unsigned section_line, RoutePrefix **ret) { |
203d4df5 | 120 | _cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL; |
95081e08 | 121 | _cleanup_(route_prefix_freep) RoutePrefix *prefix = NULL; |
203d4df5 SS |
122 | int r; |
123 | ||
124 | assert(network); | |
125 | assert(ret); | |
ecb0e85e YW |
126 | assert(filename); |
127 | assert(section_line > 0); | |
203d4df5 | 128 | |
ecb0e85e YW |
129 | r = network_config_section_new(filename, section_line, &n); |
130 | if (r < 0) | |
131 | return r; | |
203d4df5 | 132 | |
ecb0e85e YW |
133 | prefix = hashmap_get(network->route_prefixes_by_section, n); |
134 | if (prefix) { | |
135 | *ret = TAKE_PTR(prefix); | |
136 | return 0; | |
203d4df5 SS |
137 | } |
138 | ||
139 | r = route_prefix_new(&prefix); | |
140 | if (r < 0) | |
141 | return r; | |
142 | ||
143 | prefix->network = network; | |
ecb0e85e | 144 | prefix->section = TAKE_PTR(n); |
203d4df5 | 145 | |
b2cb2e82 | 146 | r = hashmap_ensure_put(&network->route_prefixes_by_section, &network_config_hash_ops, prefix->section, prefix); |
ecb0e85e YW |
147 | if (r < 0) |
148 | return r; | |
203d4df5 SS |
149 | |
150 | *ret = TAKE_PTR(prefix); | |
151 | ||
152 | return 0; | |
153 | } | |
154 | ||
13ffa39f | 155 | void network_drop_invalid_prefixes(Network *network) { |
1a7deb2f YW |
156 | Prefix *prefix; |
157 | ||
158 | assert(network); | |
159 | ||
160 | HASHMAP_FOREACH(prefix, network->prefixes_by_section) | |
161 | if (section_is_invalid(prefix->section)) | |
162 | prefix_free(prefix); | |
163 | } | |
164 | ||
13ffa39f | 165 | void network_drop_invalid_route_prefixes(Network *network) { |
1a7deb2f YW |
166 | RoutePrefix *prefix; |
167 | ||
168 | assert(network); | |
169 | ||
170 | HASHMAP_FOREACH(prefix, network->route_prefixes_by_section) | |
171 | if (section_is_invalid(prefix->section)) | |
172 | route_prefix_free(prefix); | |
173 | } | |
174 | ||
69e0f833 YW |
175 | void network_adjust_radv(Network *network) { |
176 | assert(network); | |
177 | ||
e502f94d YW |
178 | /* After this function is called, network->router_prefix_delegation can be treated as a boolean. */ |
179 | ||
180 | if (network->dhcp6_pd < 0) | |
181 | /* For backward compatibility. */ | |
182 | network->dhcp6_pd = FLAGS_SET(network->router_prefix_delegation, RADV_PREFIX_DELEGATION_DHCP6); | |
183 | ||
69e0f833 YW |
184 | if (!FLAGS_SET(network->link_local, ADDRESS_FAMILY_IPV6)) { |
185 | if (network->router_prefix_delegation != RADV_PREFIX_DELEGATION_NONE) | |
186 | log_warning("%s: IPv6PrefixDelegation= is enabled but IPv6 link local addressing is disabled. " | |
187 | "Disabling IPv6PrefixDelegation=.", network->filename); | |
188 | ||
189 | network->router_prefix_delegation = RADV_PREFIX_DELEGATION_NONE; | |
190 | } | |
191 | ||
192 | if (network->router_prefix_delegation == RADV_PREFIX_DELEGATION_NONE) { | |
193 | network->n_router_dns = 0; | |
194 | network->router_dns = mfree(network->router_dns); | |
195 | network->router_search_domains = ordered_set_free(network->router_search_domains); | |
8a08bbfc YW |
196 | } |
197 | ||
198 | if (!FLAGS_SET(network->router_prefix_delegation, RADV_PREFIX_DELEGATION_STATIC)) { | |
69e0f833 YW |
199 | network->prefixes_by_section = hashmap_free_with_destructor(network->prefixes_by_section, prefix_free); |
200 | network->route_prefixes_by_section = hashmap_free_with_destructor(network->route_prefixes_by_section, route_prefix_free); | |
201 | } | |
202 | } | |
203 | ||
a8d4a210 YW |
204 | int config_parse_prefix( |
205 | const char *unit, | |
206 | const char *filename, | |
207 | unsigned line, | |
208 | const char *section, | |
209 | unsigned section_line, | |
210 | const char *lvalue, | |
211 | int ltype, | |
212 | const char *rvalue, | |
213 | void *data, | |
214 | void *userdata) { | |
6e849e95 PF |
215 | |
216 | Network *network = userdata; | |
fcbf4cb7 | 217 | _cleanup_(prefix_free_or_set_invalidp) Prefix *p = NULL; |
6e849e95 PF |
218 | uint8_t prefixlen = 64; |
219 | union in_addr_union in6addr; | |
220 | int r; | |
221 | ||
222 | assert(filename); | |
223 | assert(section); | |
224 | assert(lvalue); | |
225 | assert(rvalue); | |
226 | assert(data); | |
227 | ||
228 | r = prefix_new_static(network, filename, section_line, &p); | |
229 | if (r < 0) | |
d96edb2c | 230 | return log_oom(); |
6e849e95 PF |
231 | |
232 | r = in_addr_prefix_from_string(rvalue, AF_INET6, &in6addr, &prefixlen); | |
233 | if (r < 0) { | |
d96edb2c | 234 | log_syntax(unit, LOG_WARNING, filename, line, r, "Prefix is invalid, ignoring assignment: %s", rvalue); |
6e849e95 PF |
235 | return 0; |
236 | } | |
237 | ||
c9778516 YW |
238 | r = sd_radv_prefix_set_prefix(p->radv_prefix, &in6addr.in6, prefixlen); |
239 | if (r < 0) { | |
240 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to set radv prefix, ignoring assignment: %s", rvalue); | |
241 | return 0; | |
242 | } | |
6e849e95 PF |
243 | |
244 | p = NULL; | |
245 | ||
246 | return 0; | |
247 | } | |
248 | ||
a8d4a210 YW |
249 | int config_parse_prefix_flags( |
250 | const char *unit, | |
251 | const char *filename, | |
252 | unsigned line, | |
253 | const char *section, | |
254 | unsigned section_line, | |
255 | const char *lvalue, | |
256 | int ltype, | |
257 | const char *rvalue, | |
258 | void *data, | |
259 | void *userdata) { | |
260 | ||
6e849e95 | 261 | Network *network = userdata; |
fcbf4cb7 | 262 | _cleanup_(prefix_free_or_set_invalidp) Prefix *p = NULL; |
c9778516 | 263 | int r; |
6e849e95 PF |
264 | |
265 | assert(filename); | |
266 | assert(section); | |
267 | assert(lvalue); | |
268 | assert(rvalue); | |
269 | assert(data); | |
270 | ||
271 | r = prefix_new_static(network, filename, section_line, &p); | |
272 | if (r < 0) | |
d96edb2c | 273 | return log_oom(); |
6e849e95 PF |
274 | |
275 | r = parse_boolean(rvalue); | |
276 | if (r < 0) { | |
c9778516 | 277 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s=, ignoring assignment: %s", lvalue, rvalue); |
6e849e95 PF |
278 | return 0; |
279 | } | |
280 | ||
6e849e95 | 281 | if (streq(lvalue, "OnLink")) |
c9778516 | 282 | r = sd_radv_prefix_set_onlink(p->radv_prefix, r); |
6e849e95 | 283 | else if (streq(lvalue, "AddressAutoconfiguration")) |
c9778516 YW |
284 | r = sd_radv_prefix_set_address_autoconfiguration(p->radv_prefix, r); |
285 | if (r < 0) { | |
286 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to set %s=, ignoring assignment: %m", lvalue); | |
287 | return 0; | |
288 | } | |
6e849e95 PF |
289 | |
290 | p = NULL; | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
a8d4a210 YW |
295 | int config_parse_prefix_lifetime( |
296 | const char *unit, | |
297 | const char *filename, | |
298 | unsigned line, | |
299 | const char *section, | |
300 | unsigned section_line, | |
301 | const char *lvalue, | |
302 | int ltype, | |
303 | const char *rvalue, | |
304 | void *data, | |
305 | void *userdata) { | |
306 | ||
6e849e95 | 307 | Network *network = userdata; |
fcbf4cb7 | 308 | _cleanup_(prefix_free_or_set_invalidp) Prefix *p = NULL; |
6e849e95 PF |
309 | usec_t usec; |
310 | int r; | |
311 | ||
312 | assert(filename); | |
313 | assert(section); | |
314 | assert(lvalue); | |
315 | assert(rvalue); | |
316 | assert(data); | |
317 | ||
318 | r = prefix_new_static(network, filename, section_line, &p); | |
319 | if (r < 0) | |
d96edb2c | 320 | return log_oom(); |
6e849e95 PF |
321 | |
322 | r = parse_sec(rvalue, &usec); | |
323 | if (r < 0) { | |
d96edb2c | 324 | log_syntax(unit, LOG_WARNING, filename, line, r, "Lifetime is invalid, ignoring assignment: %s", rvalue); |
6e849e95 PF |
325 | return 0; |
326 | } | |
327 | ||
328 | /* a value of 0xffffffff represents infinity */ | |
329 | if (streq(lvalue, "PreferredLifetimeSec")) | |
330 | r = sd_radv_prefix_set_preferred_lifetime(p->radv_prefix, | |
331 | DIV_ROUND_UP(usec, USEC_PER_SEC)); | |
332 | else if (streq(lvalue, "ValidLifetimeSec")) | |
333 | r = sd_radv_prefix_set_valid_lifetime(p->radv_prefix, | |
334 | DIV_ROUND_UP(usec, USEC_PER_SEC)); | |
c9778516 YW |
335 | if (r < 0) { |
336 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to set %s=, ignoring assignment: %m", lvalue); | |
337 | return 0; | |
338 | } | |
6e849e95 PF |
339 | |
340 | p = NULL; | |
341 | ||
342 | return 0; | |
343 | } | |
091214b6 | 344 | |
bd6379ec SS |
345 | int config_parse_prefix_assign( |
346 | const char *unit, | |
347 | const char *filename, | |
348 | unsigned line, | |
349 | const char *section, | |
350 | unsigned section_line, | |
351 | const char *lvalue, | |
352 | int ltype, | |
353 | const char *rvalue, | |
354 | void *data, | |
355 | void *userdata) { | |
356 | ||
357 | Network *network = userdata; | |
358 | _cleanup_(prefix_free_or_set_invalidp) Prefix *p = NULL; | |
359 | int r; | |
360 | ||
361 | assert(filename); | |
362 | assert(section); | |
363 | assert(lvalue); | |
364 | assert(rvalue); | |
365 | assert(data); | |
366 | ||
367 | r = prefix_new_static(network, filename, section_line, &p); | |
368 | if (r < 0) | |
d96edb2c | 369 | return log_oom(); |
bd6379ec SS |
370 | |
371 | r = parse_boolean(rvalue); | |
372 | if (r < 0) { | |
d96edb2c | 373 | log_syntax(unit, LOG_WARNING, filename, line, r, |
bd6379ec SS |
374 | "Failed to parse %s=, ignoring assignment: %s", |
375 | lvalue, rvalue); | |
376 | return 0; | |
377 | } | |
378 | ||
379 | p->assign = r; | |
380 | p = NULL; | |
381 | ||
382 | return 0; | |
383 | } | |
384 | ||
0e1fb1d0 YW |
385 | int config_parse_prefix_metric( |
386 | const char *unit, | |
387 | const char *filename, | |
388 | unsigned line, | |
389 | const char *section, | |
390 | unsigned section_line, | |
391 | const char *lvalue, | |
392 | int ltype, | |
393 | const char *rvalue, | |
394 | void *data, | |
395 | void *userdata) { | |
396 | ||
397 | Network *network = userdata; | |
398 | _cleanup_(prefix_free_or_set_invalidp) Prefix *p = NULL; | |
399 | int r; | |
400 | ||
401 | assert(filename); | |
402 | assert(section); | |
403 | assert(lvalue); | |
404 | assert(rvalue); | |
405 | assert(data); | |
406 | ||
407 | r = prefix_new_static(network, filename, section_line, &p); | |
408 | if (r < 0) | |
409 | return log_oom(); | |
410 | ||
411 | r = safe_atou32(rvalue, &p->route_metric); | |
412 | if (r < 0) { | |
413 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
414 | "Failed to parse %s=, ignoring assignment: %s", | |
415 | lvalue, rvalue); | |
416 | return 0; | |
417 | } | |
418 | ||
419 | TAKE_PTR(p); | |
420 | ||
421 | return 0; | |
422 | } | |
423 | ||
a8d4a210 YW |
424 | int config_parse_route_prefix( |
425 | const char *unit, | |
426 | const char *filename, | |
427 | unsigned line, | |
428 | const char *section, | |
429 | unsigned section_line, | |
430 | const char *lvalue, | |
431 | int ltype, | |
432 | const char *rvalue, | |
433 | void *data, | |
434 | void *userdata) { | |
203d4df5 SS |
435 | |
436 | Network *network = userdata; | |
95081e08 | 437 | _cleanup_(route_prefix_free_or_set_invalidp) RoutePrefix *p = NULL; |
203d4df5 SS |
438 | uint8_t prefixlen = 64; |
439 | union in_addr_union in6addr; | |
440 | int r; | |
441 | ||
442 | assert(filename); | |
443 | assert(section); | |
444 | assert(lvalue); | |
445 | assert(rvalue); | |
446 | assert(data); | |
447 | ||
448 | r = route_prefix_new_static(network, filename, section_line, &p); | |
449 | if (r < 0) | |
d96edb2c | 450 | return log_oom(); |
203d4df5 SS |
451 | |
452 | r = in_addr_prefix_from_string(rvalue, AF_INET6, &in6addr, &prefixlen); | |
453 | if (r < 0) { | |
d96edb2c | 454 | log_syntax(unit, LOG_WARNING, filename, line, r, "Route prefix is invalid, ignoring assignment: %s", rvalue); |
203d4df5 SS |
455 | return 0; |
456 | } | |
457 | ||
c9778516 YW |
458 | r = sd_radv_prefix_set_route_prefix(p->radv_route_prefix, &in6addr.in6, prefixlen); |
459 | if (r < 0) { | |
460 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to set route prefix, ignoring assignment: %m"); | |
461 | return 0; | |
462 | } | |
203d4df5 SS |
463 | |
464 | p = NULL; | |
465 | ||
466 | return 0; | |
467 | } | |
468 | ||
a8d4a210 YW |
469 | int config_parse_route_prefix_lifetime( |
470 | const char *unit, | |
471 | const char *filename, | |
472 | unsigned line, | |
473 | const char *section, | |
474 | unsigned section_line, | |
475 | const char *lvalue, | |
476 | int ltype, | |
477 | const char *rvalue, | |
478 | void *data, | |
479 | void *userdata) { | |
480 | ||
203d4df5 | 481 | Network *network = userdata; |
95081e08 | 482 | _cleanup_(route_prefix_free_or_set_invalidp) RoutePrefix *p = NULL; |
203d4df5 SS |
483 | usec_t usec; |
484 | int r; | |
485 | ||
486 | assert(filename); | |
487 | assert(section); | |
488 | assert(lvalue); | |
489 | assert(rvalue); | |
490 | assert(data); | |
491 | ||
492 | r = route_prefix_new_static(network, filename, section_line, &p); | |
493 | if (r < 0) | |
d96edb2c | 494 | return log_oom(); |
203d4df5 SS |
495 | |
496 | r = parse_sec(rvalue, &usec); | |
497 | if (r < 0) { | |
d96edb2c | 498 | log_syntax(unit, LOG_WARNING, filename, line, r, |
095b3a7d | 499 | "Route lifetime is invalid, ignoring assignment: %s", rvalue); |
203d4df5 SS |
500 | return 0; |
501 | } | |
502 | ||
503 | /* a value of 0xffffffff represents infinity */ | |
504 | r = sd_radv_route_prefix_set_lifetime(p->radv_route_prefix, DIV_ROUND_UP(usec, USEC_PER_SEC)); | |
c9778516 YW |
505 | if (r < 0) { |
506 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
507 | "Failed to set route lifetime, ignoring assignment: %m"); | |
508 | return 0; | |
509 | } | |
203d4df5 SS |
510 | |
511 | p = NULL; | |
512 | ||
513 | return 0; | |
514 | } | |
515 | ||
be023c67 | 516 | static int network_get_ipv6_dns(Network *network, struct in6_addr **ret_addresses, size_t *ret_size) { |
c555a358 | 517 | _cleanup_free_ struct in6_addr *addresses = NULL; |
319a4f4b | 518 | size_t n_addresses = 0; |
c555a358 PF |
519 | |
520 | assert(network); | |
be023c67 YW |
521 | assert(ret_addresses); |
522 | assert(ret_size); | |
c555a358 | 523 | |
be023c67 | 524 | for (size_t i = 0; i < network->n_dns; i++) { |
c555a358 PF |
525 | union in_addr_union *addr; |
526 | ||
e77bd3fd | 527 | if (network->dns[i]->family != AF_INET6) |
c555a358 PF |
528 | continue; |
529 | ||
e77bd3fd | 530 | addr = &network->dns[i]->address; |
c555a358 PF |
531 | |
532 | if (in_addr_is_null(AF_INET6, addr) || | |
533 | in_addr_is_link_local(AF_INET6, addr) || | |
534 | in_addr_is_localhost(AF_INET6, addr)) | |
535 | continue; | |
536 | ||
319a4f4b | 537 | if (!GREEDY_REALLOC(addresses, n_addresses + 1)) |
c555a358 PF |
538 | return -ENOMEM; |
539 | ||
540 | addresses[n_addresses++] = addr->in6; | |
541 | } | |
542 | ||
be023c67 YW |
543 | *ret_addresses = TAKE_PTR(addresses); |
544 | *ret_size = n_addresses; | |
c555a358 PF |
545 | |
546 | return n_addresses; | |
547 | } | |
548 | ||
549 | static int radv_set_dns(Link *link, Link *uplink) { | |
550 | _cleanup_free_ struct in6_addr *dns = NULL; | |
c555a358 | 551 | usec_t lifetime_usec; |
fd3ef936 | 552 | size_t n_dns; |
c555a358 PF |
553 | int r; |
554 | ||
555 | if (!link->network->router_emit_dns) | |
556 | return 0; | |
557 | ||
558 | if (link->network->router_dns) { | |
fd3ef936 YW |
559 | struct in6_addr *p; |
560 | ||
561 | dns = new(struct in6_addr, link->network->n_router_dns); | |
4e361acc | 562 | if (!dns) |
c555a358 PF |
563 | return -ENOMEM; |
564 | ||
fd3ef936 YW |
565 | p = dns; |
566 | for (size_t i = 0; i < link->network->n_router_dns; i++) | |
94876904 YW |
567 | if (in6_addr_is_null(&link->network->router_dns[i])) { |
568 | if (in6_addr_is_set(&link->ipv6ll_address)) | |
fd3ef936 YW |
569 | *(p++) = link->ipv6ll_address; |
570 | } else | |
571 | *(p++) = link->network->router_dns[i]; | |
572 | ||
573 | n_dns = p - dns; | |
c555a358 PF |
574 | lifetime_usec = link->network->router_dns_lifetime_usec; |
575 | ||
576 | goto set_dns; | |
577 | } | |
578 | ||
579 | lifetime_usec = SD_RADV_DEFAULT_DNS_LIFETIME_USEC; | |
580 | ||
be023c67 | 581 | r = network_get_ipv6_dns(link->network, &dns, &n_dns); |
c555a358 PF |
582 | if (r > 0) |
583 | goto set_dns; | |
584 | ||
585 | if (uplink) { | |
4e361acc | 586 | if (!uplink->network) { |
349a981d PF |
587 | log_link_debug(uplink, "Cannot fetch DNS servers as uplink interface is not managed by us"); |
588 | return 0; | |
589 | } | |
590 | ||
be023c67 | 591 | r = network_get_ipv6_dns(uplink->network, &dns, &n_dns); |
c555a358 PF |
592 | if (r > 0) |
593 | goto set_dns; | |
594 | } | |
595 | ||
596 | return 0; | |
597 | ||
598 | set_dns: | |
599 | return sd_radv_set_rdnss(link->radv, | |
600 | DIV_ROUND_UP(lifetime_usec, USEC_PER_SEC), | |
601 | dns, n_dns); | |
602 | } | |
603 | ||
604 | static int radv_set_domains(Link *link, Link *uplink) { | |
5e2a51d5 | 605 | OrderedSet *search_domains; |
c555a358 | 606 | usec_t lifetime_usec; |
5e2a51d5 | 607 | _cleanup_free_ char **s = NULL; /* just free() because the strings are owned by the set */ |
c555a358 PF |
608 | |
609 | if (!link->network->router_emit_domains) | |
610 | return 0; | |
611 | ||
612 | search_domains = link->network->router_search_domains; | |
613 | lifetime_usec = link->network->router_dns_lifetime_usec; | |
614 | ||
615 | if (search_domains) | |
616 | goto set_domains; | |
617 | ||
618 | lifetime_usec = SD_RADV_DEFAULT_DNS_LIFETIME_USEC; | |
619 | ||
620 | search_domains = link->network->search_domains; | |
621 | if (search_domains) | |
622 | goto set_domains; | |
623 | ||
624 | if (uplink) { | |
4e361acc | 625 | if (!uplink->network) { |
349a981d PF |
626 | log_link_debug(uplink, "Cannot fetch DNS search domains as uplink interface is not managed by us"); |
627 | return 0; | |
628 | } | |
629 | ||
c555a358 PF |
630 | search_domains = uplink->network->search_domains; |
631 | if (search_domains) | |
632 | goto set_domains; | |
633 | } | |
634 | ||
635 | return 0; | |
636 | ||
637 | set_domains: | |
5e2a51d5 ZJS |
638 | s = ordered_set_get_strv(search_domains); |
639 | if (!s) | |
640 | return log_oom(); | |
641 | ||
c555a358 PF |
642 | return sd_radv_set_dnssl(link->radv, |
643 | DIV_ROUND_UP(lifetime_usec, USEC_PER_SEC), | |
5e2a51d5 | 644 | s); |
c555a358 PF |
645 | |
646 | } | |
647 | ||
648 | int radv_emit_dns(Link *link) { | |
649 | Link *uplink; | |
650 | int r; | |
651 | ||
652 | uplink = manager_find_uplink(link->manager, link); | |
653 | ||
654 | r = radv_set_dns(link, uplink); | |
655 | if (r < 0) | |
656 | log_link_warning_errno(link, r, "Could not set RA DNS: %m"); | |
657 | ||
658 | r = radv_set_domains(link, uplink); | |
659 | if (r < 0) | |
660 | log_link_warning_errno(link, r, "Could not set RA Domains: %m"); | |
661 | ||
662 | return 0; | |
663 | } | |
664 | ||
086b8853 YW |
665 | static bool link_radv_enabled(Link *link) { |
666 | assert(link); | |
667 | ||
668 | if (!link_ipv6ll_enabled(link)) | |
669 | return false; | |
670 | ||
e502f94d | 671 | return link->network->router_prefix_delegation; |
086b8853 YW |
672 | } |
673 | ||
091214b6 | 674 | int radv_configure(Link *link) { |
2075e596 | 675 | uint16_t router_lifetime; |
8a08bbfc YW |
676 | RoutePrefix *q; |
677 | Prefix *p; | |
95081e08 | 678 | int r; |
091214b6 PF |
679 | |
680 | assert(link); | |
681 | assert(link->network); | |
682 | ||
086b8853 YW |
683 | if (!link_radv_enabled(link)) |
684 | return 0; | |
685 | ||
bc9e40c9 YW |
686 | if (link->radv) |
687 | return -EBUSY; | |
688 | ||
091214b6 PF |
689 | r = sd_radv_new(&link->radv); |
690 | if (r < 0) | |
691 | return r; | |
692 | ||
4cf85000 | 693 | r = sd_radv_attach_event(link->radv, link->manager->event, 0); |
091214b6 PF |
694 | if (r < 0) |
695 | return r; | |
696 | ||
b8162cd2 | 697 | r = sd_radv_set_mac(link->radv, &link->hw_addr.addr.ether); |
091214b6 PF |
698 | if (r < 0) |
699 | return r; | |
700 | ||
701 | r = sd_radv_set_ifindex(link->radv, link->ifindex); | |
702 | if (r < 0) | |
703 | return r; | |
704 | ||
705 | r = sd_radv_set_managed_information(link->radv, link->network->router_managed); | |
706 | if (r < 0) | |
707 | return r; | |
708 | ||
709 | r = sd_radv_set_other_information(link->radv, link->network->router_other_information); | |
710 | if (r < 0) | |
711 | return r; | |
712 | ||
2075e596 YW |
713 | /* a value of UINT16_MAX represents infinity, 0x0 means this host is not a router */ |
714 | if (link->network->router_lifetime_usec == USEC_INFINITY) | |
715 | router_lifetime = UINT16_MAX; | |
716 | else if (link->network->router_lifetime_usec > (UINT16_MAX - 1) * USEC_PER_SEC) | |
717 | router_lifetime = UINT16_MAX - 1; | |
718 | else | |
719 | router_lifetime = DIV_ROUND_UP(link->network->router_lifetime_usec, USEC_PER_SEC); | |
720 | ||
721 | r = sd_radv_set_router_lifetime(link->radv, router_lifetime); | |
091214b6 PF |
722 | if (r < 0) |
723 | return r; | |
724 | ||
2075e596 YW |
725 | if (router_lifetime > 0) { |
726 | r = sd_radv_set_preference(link->radv, link->network->router_preference); | |
091214b6 PF |
727 | if (r < 0) |
728 | return r; | |
729 | } | |
730 | ||
8a08bbfc YW |
731 | HASHMAP_FOREACH(p, link->network->prefixes_by_section) { |
732 | r = sd_radv_add_prefix(link->radv, p->radv_prefix, false); | |
733 | if (r == -EEXIST) | |
734 | continue; | |
735 | if (r == -ENOEXEC) { | |
736 | log_link_warning_errno(link, r, "[IPv6Prefix] section configured without Prefix= setting, ignoring section."); | |
737 | continue; | |
56a23cb4 | 738 | } |
8a08bbfc YW |
739 | if (r < 0) |
740 | return r; | |
741 | } | |
203d4df5 | 742 | |
8a08bbfc YW |
743 | HASHMAP_FOREACH(q, link->network->route_prefixes_by_section) { |
744 | r = sd_radv_add_route_prefix(link->radv, q->radv_route_prefix, false); | |
745 | if (r == -EEXIST) | |
746 | continue; | |
747 | if (r < 0) | |
748 | return r; | |
091214b6 PF |
749 | } |
750 | ||
fd3ef936 | 751 | return 0; |
091214b6 | 752 | } |
ca5ad760 | 753 | |
be9363cc YW |
754 | int radv_update_mac(Link *link) { |
755 | bool restart; | |
756 | int r; | |
757 | ||
758 | assert(link); | |
759 | ||
760 | if (!link->radv) | |
761 | return 0; | |
762 | ||
763 | restart = sd_radv_is_running(link->radv); | |
764 | ||
a391901e YW |
765 | r = sd_radv_stop(link->radv); |
766 | if (r < 0) | |
767 | return r; | |
be9363cc | 768 | |
b8162cd2 | 769 | r = sd_radv_set_mac(link->radv, &link->hw_addr.addr.ether); |
be9363cc YW |
770 | if (r < 0) |
771 | return r; | |
772 | ||
773 | if (restart) { | |
774 | r = sd_radv_start(link->radv); | |
775 | if (r < 0) | |
776 | return r; | |
777 | } | |
778 | ||
779 | return 0; | |
780 | } | |
781 | ||
a8d4a210 YW |
782 | int radv_add_prefix( |
783 | Link *link, | |
784 | const struct in6_addr *prefix, | |
785 | uint8_t prefix_len, | |
786 | uint32_t lifetime_preferred, | |
787 | uint32_t lifetime_valid) { | |
788 | ||
1d596fde YW |
789 | _cleanup_(sd_radv_prefix_unrefp) sd_radv_prefix *p = NULL; |
790 | int r; | |
791 | ||
792 | assert(link); | |
85b6a811 YW |
793 | |
794 | if (!link->radv) | |
795 | return 0; | |
1d596fde YW |
796 | |
797 | r = sd_radv_prefix_new(&p); | |
798 | if (r < 0) | |
799 | return r; | |
800 | ||
801 | r = sd_radv_prefix_set_prefix(p, prefix, prefix_len); | |
802 | if (r < 0) | |
803 | return r; | |
804 | ||
805 | r = sd_radv_prefix_set_preferred_lifetime(p, lifetime_preferred); | |
806 | if (r < 0) | |
807 | return r; | |
808 | ||
809 | r = sd_radv_prefix_set_valid_lifetime(p, lifetime_valid); | |
810 | if (r < 0) | |
811 | return r; | |
812 | ||
813 | r = sd_radv_add_prefix(link->radv, p, true); | |
814 | if (r < 0 && r != -EEXIST) | |
815 | return r; | |
816 | ||
817 | return 0; | |
818 | } | |
819 | ||
ca5ad760 YW |
820 | int config_parse_radv_dns( |
821 | const char *unit, | |
822 | const char *filename, | |
823 | unsigned line, | |
824 | const char *section, | |
825 | unsigned section_line, | |
826 | const char *lvalue, | |
827 | int ltype, | |
828 | const char *rvalue, | |
829 | void *data, | |
830 | void *userdata) { | |
831 | ||
832 | Network *n = data; | |
ca5ad760 YW |
833 | int r; |
834 | ||
835 | assert(filename); | |
836 | assert(lvalue); | |
837 | assert(rvalue); | |
838 | ||
a3c1a949 YW |
839 | if (isempty(rvalue)) { |
840 | n->n_router_dns = 0; | |
841 | n->router_dns = mfree(n->router_dns); | |
842 | return 0; | |
843 | } | |
844 | ||
d96edb2c | 845 | for (const char *p = rvalue;;) { |
ca5ad760 YW |
846 | _cleanup_free_ char *w = NULL; |
847 | union in_addr_union a; | |
848 | ||
849 | r = extract_first_word(&p, &w, NULL, 0); | |
850 | if (r == -ENOMEM) | |
851 | return log_oom(); | |
852 | if (r < 0) { | |
d96edb2c | 853 | log_syntax(unit, LOG_WARNING, filename, line, r, |
ca5ad760 YW |
854 | "Failed to extract word, ignoring: %s", rvalue); |
855 | return 0; | |
856 | } | |
857 | if (r == 0) | |
d96edb2c | 858 | return 0; |
ca5ad760 | 859 | |
fd3ef936 YW |
860 | if (streq(w, "_link_local")) |
861 | a = IN_ADDR_NULL; | |
862 | else { | |
863 | r = in_addr_from_string(AF_INET6, w, &a); | |
864 | if (r < 0) { | |
d96edb2c | 865 | log_syntax(unit, LOG_WARNING, filename, line, r, |
fd3ef936 YW |
866 | "Failed to parse DNS server address, ignoring: %s", w); |
867 | continue; | |
868 | } | |
ca5ad760 | 869 | |
fd3ef936 | 870 | if (in_addr_is_null(AF_INET6, &a)) { |
d96edb2c | 871 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
fd3ef936 YW |
872 | "DNS server address is null, ignoring: %s", w); |
873 | continue; | |
874 | } | |
875 | } | |
ca5ad760 | 876 | |
fd3ef936 YW |
877 | struct in6_addr *m; |
878 | m = reallocarray(n->router_dns, n->n_router_dns + 1, sizeof(struct in6_addr)); | |
879 | if (!m) | |
880 | return log_oom(); | |
ca5ad760 | 881 | |
fd3ef936 YW |
882 | m[n->n_router_dns++] = a.in6; |
883 | n->router_dns = m; | |
ca5ad760 | 884 | } |
ca5ad760 YW |
885 | } |
886 | ||
887 | int config_parse_radv_search_domains( | |
888 | const char *unit, | |
889 | const char *filename, | |
890 | unsigned line, | |
891 | const char *section, | |
892 | unsigned section_line, | |
893 | const char *lvalue, | |
894 | int ltype, | |
895 | const char *rvalue, | |
896 | void *data, | |
897 | void *userdata) { | |
898 | ||
899 | Network *n = data; | |
ca5ad760 YW |
900 | int r; |
901 | ||
902 | assert(filename); | |
903 | assert(lvalue); | |
904 | assert(rvalue); | |
905 | ||
a3c1a949 YW |
906 | if (isempty(rvalue)) { |
907 | n->router_search_domains = ordered_set_free(n->router_search_domains); | |
908 | return 0; | |
909 | } | |
910 | ||
d96edb2c | 911 | for (const char *p = rvalue;;) { |
ca5ad760 YW |
912 | _cleanup_free_ char *w = NULL, *idna = NULL; |
913 | ||
914 | r = extract_first_word(&p, &w, NULL, 0); | |
915 | if (r == -ENOMEM) | |
916 | return log_oom(); | |
917 | if (r < 0) { | |
d96edb2c | 918 | log_syntax(unit, LOG_WARNING, filename, line, r, |
ca5ad760 YW |
919 | "Failed to extract word, ignoring: %s", rvalue); |
920 | return 0; | |
921 | } | |
922 | if (r == 0) | |
d96edb2c | 923 | return 0; |
ca5ad760 YW |
924 | |
925 | r = dns_name_apply_idna(w, &idna); | |
926 | if (r < 0) { | |
d96edb2c | 927 | log_syntax(unit, LOG_WARNING, filename, line, r, |
ca5ad760 YW |
928 | "Failed to apply IDNA to domain name '%s', ignoring: %m", w); |
929 | continue; | |
930 | } else if (r == 0) | |
931 | /* transfer ownership to simplify subsequent operations */ | |
932 | idna = TAKE_PTR(w); | |
933 | ||
5e276772 | 934 | r = ordered_set_ensure_allocated(&n->router_search_domains, &string_hash_ops_free); |
ca5ad760 | 935 | if (r < 0) |
d96edb2c | 936 | return log_oom(); |
ca5ad760 YW |
937 | |
938 | r = ordered_set_consume(n->router_search_domains, TAKE_PTR(idna)); | |
939 | if (r < 0) | |
d96edb2c | 940 | return log_oom(); |
ca5ad760 | 941 | } |
ca5ad760 YW |
942 | } |
943 | ||
944 | static const char * const radv_prefix_delegation_table[_RADV_PREFIX_DELEGATION_MAX] = { | |
a8d4a210 | 945 | [RADV_PREFIX_DELEGATION_NONE] = "no", |
ca5ad760 | 946 | [RADV_PREFIX_DELEGATION_STATIC] = "static", |
a8d4a210 YW |
947 | [RADV_PREFIX_DELEGATION_DHCP6] = "dhcpv6", |
948 | [RADV_PREFIX_DELEGATION_BOTH] = "yes", | |
ca5ad760 YW |
949 | }; |
950 | ||
951 | DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN( | |
952 | radv_prefix_delegation, | |
953 | RADVPrefixDelegation, | |
954 | RADV_PREFIX_DELEGATION_BOTH); | |
955 | ||
27ff0490 YW |
956 | int config_parse_router_prefix_delegation( |
957 | const char *unit, | |
958 | const char *filename, | |
959 | unsigned line, | |
960 | const char *section, | |
961 | unsigned section_line, | |
962 | const char *lvalue, | |
963 | int ltype, | |
964 | const char *rvalue, | |
965 | void *data, | |
966 | void *userdata) { | |
967 | ||
968 | RADVPrefixDelegation val, *ra = data; | |
969 | int r; | |
970 | ||
971 | assert(filename); | |
972 | assert(lvalue); | |
973 | assert(rvalue); | |
974 | assert(data); | |
975 | ||
976 | if (streq(lvalue, "IPv6SendRA")) { | |
977 | r = parse_boolean(rvalue); | |
978 | if (r < 0) { | |
979 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
980 | "Invalid %s= setting, ignoring assignment: %s", lvalue, rvalue); | |
981 | return 0; | |
982 | } | |
983 | ||
984 | /* When IPv6SendRA= is enabled, only static prefixes are sent by default, and users | |
985 | * need to explicitly enable DHCPv6PrefixDelegation=. */ | |
986 | *ra = r ? RADV_PREFIX_DELEGATION_STATIC : RADV_PREFIX_DELEGATION_NONE; | |
987 | return 0; | |
988 | } | |
989 | ||
990 | /* For backward compatibility */ | |
991 | val = radv_prefix_delegation_from_string(rvalue); | |
992 | if (val < 0) { | |
b98680b2 | 993 | log_syntax(unit, LOG_WARNING, filename, line, val, |
27ff0490 YW |
994 | "Invalid %s= setting, ignoring assignment: %s", lvalue, rvalue); |
995 | return 0; | |
996 | } | |
997 | ||
998 | *ra = val; | |
999 | return 0; | |
1000 | } | |
a8d4a210 YW |
1001 | |
1002 | int config_parse_router_preference( | |
1003 | const char *unit, | |
1004 | const char *filename, | |
1005 | unsigned line, | |
1006 | const char *section, | |
1007 | unsigned section_line, | |
1008 | const char *lvalue, | |
1009 | int ltype, | |
1010 | const char *rvalue, | |
1011 | void *data, | |
1012 | void *userdata) { | |
1013 | ||
ca5ad760 YW |
1014 | Network *network = userdata; |
1015 | ||
1016 | assert(filename); | |
1017 | assert(section); | |
1018 | assert(lvalue); | |
1019 | assert(rvalue); | |
1020 | assert(data); | |
1021 | ||
1022 | if (streq(rvalue, "high")) | |
1023 | network->router_preference = SD_NDISC_PREFERENCE_HIGH; | |
1024 | else if (STR_IN_SET(rvalue, "medium", "normal", "default")) | |
1025 | network->router_preference = SD_NDISC_PREFERENCE_MEDIUM; | |
1026 | else if (streq(rvalue, "low")) | |
1027 | network->router_preference = SD_NDISC_PREFERENCE_LOW; | |
1028 | else | |
d96edb2c YW |
1029 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
1030 | "Invalid router preference, ignoring assignment: %s", rvalue); | |
ca5ad760 YW |
1031 | |
1032 | return 0; | |
1033 | } |