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3abaabda LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2016 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
20 | #include "alloc-util.h" | |
21 | #include "bus-util.h" | |
22 | #include "parse-util.h" | |
23 | #include "resolve-util.h" | |
24 | #include "resolved-bus.h" | |
25 | #include "resolved-link-bus.h" | |
7207052d | 26 | #include "resolved-resolv-conf.h" |
3abaabda LP |
27 | #include "strv.h" |
28 | ||
29 | static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_resolve_support, resolve_support, ResolveSupport); | |
30 | static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_dnssec_mode, dnssec_mode, DnssecMode); | |
31 | ||
32 | static int property_get_dns( | |
33 | sd_bus *bus, | |
34 | const char *path, | |
35 | const char *interface, | |
36 | const char *property, | |
37 | sd_bus_message *reply, | |
38 | void *userdata, | |
39 | sd_bus_error *error) { | |
40 | ||
41 | Link *l = userdata; | |
42 | DnsServer *s; | |
43 | int r; | |
44 | ||
45 | assert(reply); | |
46 | assert(l); | |
47 | ||
48 | r = sd_bus_message_open_container(reply, 'a', "(iay)"); | |
49 | if (r < 0) | |
50 | return r; | |
51 | ||
52 | LIST_FOREACH(servers, s, l->dns_servers) { | |
53 | r = bus_dns_server_append(reply, s, false); | |
54 | if (r < 0) | |
55 | return r; | |
56 | } | |
57 | ||
58 | return sd_bus_message_close_container(reply); | |
59 | } | |
60 | ||
61 | static int property_get_domains( | |
62 | sd_bus *bus, | |
63 | const char *path, | |
64 | const char *interface, | |
65 | const char *property, | |
66 | sd_bus_message *reply, | |
67 | void *userdata, | |
68 | sd_bus_error *error) { | |
69 | ||
70 | Link *l = userdata; | |
71 | DnsSearchDomain *d; | |
72 | int r; | |
73 | ||
74 | assert(reply); | |
75 | assert(l); | |
76 | ||
ad44b56b | 77 | r = sd_bus_message_open_container(reply, 'a', "(sb)"); |
3abaabda LP |
78 | if (r < 0) |
79 | return r; | |
80 | ||
81 | LIST_FOREACH(domains, d, l->search_domains) { | |
ad44b56b | 82 | r = sd_bus_message_append(reply, "(sb)", d->name, d->route_only); |
3abaabda LP |
83 | if (r < 0) |
84 | return r; | |
85 | } | |
86 | ||
87 | return sd_bus_message_close_container(reply); | |
88 | } | |
89 | ||
90 | static int property_get_scopes_mask( | |
91 | sd_bus *bus, | |
92 | const char *path, | |
93 | const char *interface, | |
94 | const char *property, | |
95 | sd_bus_message *reply, | |
96 | void *userdata, | |
97 | sd_bus_error *error) { | |
98 | ||
99 | Link *l = userdata; | |
100 | uint64_t mask; | |
101 | ||
102 | assert(reply); | |
103 | assert(l); | |
104 | ||
105 | mask = (l->unicast_scope ? SD_RESOLVED_DNS : 0) | | |
106 | (l->llmnr_ipv4_scope ? SD_RESOLVED_LLMNR_IPV4 : 0) | | |
107 | (l->llmnr_ipv6_scope ? SD_RESOLVED_LLMNR_IPV6 : 0) | | |
108 | (l->mdns_ipv4_scope ? SD_RESOLVED_MDNS_IPV4 : 0) | | |
109 | (l->mdns_ipv6_scope ? SD_RESOLVED_MDNS_IPV6 : 0); | |
110 | ||
111 | return sd_bus_message_append(reply, "t", mask); | |
112 | } | |
113 | ||
114 | static int property_get_ntas( | |
115 | sd_bus *bus, | |
116 | const char *path, | |
117 | const char *interface, | |
118 | const char *property, | |
119 | sd_bus_message *reply, | |
120 | void *userdata, | |
121 | sd_bus_error *error) { | |
122 | ||
123 | Link *l = userdata; | |
124 | const char *name; | |
125 | Iterator i; | |
126 | int r; | |
127 | ||
128 | assert(reply); | |
129 | assert(l); | |
130 | ||
131 | r = sd_bus_message_open_container(reply, 'a', "s"); | |
132 | if (r < 0) | |
133 | return r; | |
134 | ||
135 | SET_FOREACH(name, l->dnssec_negative_trust_anchors, i) { | |
136 | r = sd_bus_message_append(reply, "s", name); | |
137 | if (r < 0) | |
138 | return r; | |
139 | } | |
140 | ||
141 | return sd_bus_message_close_container(reply); | |
142 | } | |
143 | ||
c69fa7e3 LP |
144 | static int property_get_dnssec_supported( |
145 | sd_bus *bus, | |
146 | const char *path, | |
147 | const char *interface, | |
148 | const char *property, | |
149 | sd_bus_message *reply, | |
150 | void *userdata, | |
151 | sd_bus_error *error) { | |
152 | ||
153 | Link *l = userdata; | |
154 | ||
155 | assert(reply); | |
156 | assert(l); | |
157 | ||
158 | return sd_bus_message_append(reply, "b", link_dnssec_supported(l)); | |
159 | } | |
160 | ||
d2ec6608 LP |
161 | int bus_link_method_set_dns_servers(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
162 | _cleanup_free_ struct in_addr_data *dns = NULL; | |
163 | size_t allocated = 0, n = 0; | |
164 | Link *l = userdata; | |
165 | unsigned i; | |
166 | int r; | |
167 | ||
168 | assert(message); | |
169 | assert(l); | |
170 | ||
171 | r = sd_bus_message_enter_container(message, 'a', "(iay)"); | |
172 | if (r < 0) | |
173 | return r; | |
174 | ||
175 | for (;;) { | |
176 | int family; | |
177 | size_t sz; | |
178 | const void *d; | |
179 | ||
180 | assert_cc(sizeof(int) == sizeof(int32_t)); | |
181 | ||
182 | r = sd_bus_message_enter_container(message, 'r', "iay"); | |
183 | if (r < 0) | |
184 | return r; | |
185 | if (r == 0) | |
186 | break; | |
187 | ||
188 | r = sd_bus_message_read(message, "i", &family); | |
189 | if (r < 0) | |
190 | return r; | |
191 | ||
192 | if (!IN_SET(family, AF_INET, AF_INET6)) | |
193 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown address family %i", family); | |
194 | ||
195 | r = sd_bus_message_read_array(message, 'y', &d, &sz); | |
196 | if (r < 0) | |
197 | return r; | |
198 | if (sz != FAMILY_ADDRESS_SIZE(family)) | |
199 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid address size"); | |
200 | ||
201 | r = sd_bus_message_exit_container(message); | |
202 | if (r < 0) | |
203 | return r; | |
204 | ||
205 | if (!GREEDY_REALLOC(dns, allocated, n+1)) | |
206 | return -ENOMEM; | |
207 | ||
208 | dns[n].family = family; | |
209 | memcpy(&dns[n].address, d, sz); | |
210 | n++; | |
211 | } | |
212 | ||
213 | r = sd_bus_message_exit_container(message); | |
214 | if (r < 0) | |
215 | return r; | |
216 | ||
217 | dns_server_mark_all(l->dns_servers); | |
218 | ||
219 | for (i = 0; i < n; i++) { | |
220 | DnsServer *s; | |
221 | ||
2817157b | 222 | s = dns_server_find(l->dns_servers, dns[i].family, &dns[i].address, 0); |
d2ec6608 LP |
223 | if (s) |
224 | dns_server_move_back_and_unmark(s); | |
225 | else { | |
2817157b | 226 | r = dns_server_new(l->manager, NULL, DNS_SERVER_LINK, l, dns[i].family, &dns[i].address, 0); |
d2ec6608 LP |
227 | if (r < 0) |
228 | goto clear; | |
229 | } | |
230 | ||
231 | } | |
232 | ||
233 | dns_server_unlink_marked(l->dns_servers); | |
234 | link_allocate_scopes(l); | |
235 | ||
7207052d LP |
236 | (void) manager_write_resolv_conf(l->manager); |
237 | ||
d2ec6608 LP |
238 | return sd_bus_reply_method_return(message, NULL); |
239 | ||
240 | clear: | |
241 | dns_server_unlink_all(l->dns_servers); | |
242 | return r; | |
243 | } | |
244 | ||
ee116b54 | 245 | int bus_link_method_set_domains(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
d2ec6608 | 246 | Link *l = userdata; |
d2ec6608 LP |
247 | int r; |
248 | ||
249 | assert(message); | |
250 | assert(l); | |
251 | ||
ad44b56b | 252 | r = sd_bus_message_enter_container(message, 'a', "(sb)"); |
d2ec6608 LP |
253 | if (r < 0) |
254 | return r; | |
255 | ||
ad44b56b LP |
256 | for (;;) { |
257 | const char *name; | |
258 | int route_only; | |
d2ec6608 | 259 | |
ad44b56b | 260 | r = sd_bus_message_read(message, "(sb)", &name, &route_only); |
d2ec6608 LP |
261 | if (r < 0) |
262 | return r; | |
263 | if (r == 0) | |
ad44b56b LP |
264 | break; |
265 | ||
266 | r = dns_name_is_valid(name); | |
267 | if (r < 0) | |
268 | return r; | |
269 | if (r == 0) | |
270 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid search domain %s", name); | |
271 | if (!route_only && dns_name_is_root(name)) | |
d2ec6608 LP |
272 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Root domain is not suitable as search domain"); |
273 | } | |
274 | ||
275 | dns_search_domain_mark_all(l->search_domains); | |
276 | ||
ad44b56b LP |
277 | r = sd_bus_message_rewind(message, false); |
278 | if (r < 0) | |
279 | return r; | |
280 | ||
281 | for (;;) { | |
d2ec6608 | 282 | DnsSearchDomain *d; |
ad44b56b LP |
283 | const char *name; |
284 | int route_only; | |
d2ec6608 | 285 | |
ad44b56b LP |
286 | r = sd_bus_message_read(message, "(sb)", &name, &route_only); |
287 | if (r < 0) | |
288 | goto clear; | |
289 | if (r == 0) | |
290 | break; | |
291 | ||
292 | r = dns_search_domain_find(l->search_domains, name, &d); | |
d2ec6608 LP |
293 | if (r < 0) |
294 | goto clear; | |
295 | ||
296 | if (r > 0) | |
297 | dns_search_domain_move_back_and_unmark(d); | |
298 | else { | |
ad44b56b | 299 | r = dns_search_domain_new(l->manager, &d, DNS_SEARCH_DOMAIN_LINK, l, name); |
d2ec6608 LP |
300 | if (r < 0) |
301 | goto clear; | |
302 | } | |
ad44b56b LP |
303 | |
304 | d->route_only = route_only; | |
d2ec6608 LP |
305 | } |
306 | ||
ad44b56b LP |
307 | r = sd_bus_message_exit_container(message); |
308 | if (r < 0) | |
309 | goto clear; | |
310 | ||
d2ec6608 | 311 | dns_search_domain_unlink_marked(l->search_domains); |
7207052d LP |
312 | |
313 | (void) manager_write_resolv_conf(l->manager); | |
314 | ||
d2ec6608 LP |
315 | return sd_bus_reply_method_return(message, NULL); |
316 | ||
317 | clear: | |
318 | dns_search_domain_unlink_all(l->search_domains); | |
319 | return r; | |
320 | } | |
321 | ||
322 | int bus_link_method_set_llmnr(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
323 | Link *l = userdata; | |
324 | ResolveSupport mode; | |
325 | const char *llmnr; | |
326 | int r; | |
327 | ||
328 | assert(message); | |
329 | assert(l); | |
330 | ||
331 | r = sd_bus_message_read(message, "s", &llmnr); | |
332 | if (r < 0) | |
333 | return r; | |
334 | ||
335 | if (isempty(llmnr)) | |
336 | mode = RESOLVE_SUPPORT_YES; | |
337 | else { | |
338 | mode = resolve_support_from_string(llmnr); | |
339 | if (mode < 0) | |
340 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid LLMNR setting: %s", llmnr); | |
341 | } | |
342 | ||
343 | l->llmnr_support = mode; | |
344 | link_allocate_scopes(l); | |
345 | link_add_rrs(l, false); | |
346 | ||
347 | return sd_bus_reply_method_return(message, NULL); | |
348 | } | |
349 | ||
350 | int bus_link_method_set_mdns(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
351 | Link *l = userdata; | |
352 | ResolveSupport mode; | |
353 | const char *mdns; | |
354 | int r; | |
355 | ||
356 | assert(message); | |
357 | assert(l); | |
358 | ||
359 | r = sd_bus_message_read(message, "s", &mdns); | |
360 | if (r < 0) | |
361 | return r; | |
362 | ||
363 | if (isempty(mdns)) | |
364 | mode = RESOLVE_SUPPORT_NO; | |
365 | else { | |
366 | mode = resolve_support_from_string(mdns); | |
367 | if (mode < 0) | |
368 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid MulticastDNS setting: %s", mdns); | |
369 | } | |
370 | ||
371 | l->mdns_support = mode; | |
372 | link_allocate_scopes(l); | |
373 | link_add_rrs(l, false); | |
374 | ||
375 | return sd_bus_reply_method_return(message, NULL); | |
376 | } | |
377 | ||
378 | int bus_link_method_set_dnssec(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
379 | Link *l = userdata; | |
380 | const char *dnssec; | |
381 | DnssecMode mode; | |
382 | int r; | |
383 | ||
384 | assert(message); | |
385 | assert(l); | |
386 | ||
387 | r = sd_bus_message_read(message, "s", &dnssec); | |
388 | if (r < 0) | |
389 | return r; | |
390 | ||
391 | if (isempty(dnssec)) | |
392 | mode = _DNSSEC_MODE_INVALID; | |
393 | else { | |
394 | mode = dnssec_mode_from_string(dnssec); | |
395 | if (mode < 0) | |
396 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid DNSSEC setting: %s", dnssec); | |
397 | } | |
398 | ||
399 | link_set_dnssec_mode(l, mode); | |
400 | ||
401 | return sd_bus_reply_method_return(message, NULL); | |
402 | } | |
403 | ||
404 | int bus_link_method_set_dnssec_negative_trust_anchors(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
405 | _cleanup_set_free_free_ Set *ns = NULL; | |
406 | _cleanup_free_ char **ntas = NULL; | |
407 | Link *l = userdata; | |
408 | int r; | |
409 | char **i; | |
410 | ||
411 | assert(message); | |
412 | assert(l); | |
413 | ||
414 | r = sd_bus_message_read_strv(message, &ntas); | |
415 | if (r < 0) | |
416 | return r; | |
417 | ||
418 | STRV_FOREACH(i, ntas) { | |
419 | r = dns_name_is_valid(*i); | |
420 | if (r < 0) | |
421 | return r; | |
422 | if (r == 0) | |
55abd6da | 423 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid negative trust anchor domain: %s", *i); |
d2ec6608 LP |
424 | } |
425 | ||
426 | ns = set_new(&dns_name_hash_ops); | |
427 | if (!ns) | |
428 | return -ENOMEM; | |
429 | ||
430 | STRV_FOREACH(i, ntas) { | |
431 | r = set_put_strdup(ns, *i); | |
432 | if (r < 0) | |
433 | return r; | |
434 | } | |
435 | ||
436 | set_free_free(l->dnssec_negative_trust_anchors); | |
437 | l->dnssec_negative_trust_anchors = ns; | |
438 | ns = NULL; | |
439 | ||
440 | return sd_bus_reply_method_return(message, NULL); | |
441 | } | |
442 | ||
443 | int bus_link_method_revert(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
444 | Link *l = userdata; | |
445 | ||
446 | assert(message); | |
447 | assert(l); | |
448 | ||
449 | link_flush_settings(l); | |
450 | link_allocate_scopes(l); | |
451 | link_add_rrs(l, false); | |
452 | ||
7207052d LP |
453 | (void) manager_write_resolv_conf(l->manager); |
454 | ||
d2ec6608 LP |
455 | return sd_bus_reply_method_return(message, NULL); |
456 | } | |
457 | ||
3abaabda LP |
458 | const sd_bus_vtable link_vtable[] = { |
459 | SD_BUS_VTABLE_START(0), | |
460 | ||
461 | SD_BUS_PROPERTY("ScopesMask", "t", property_get_scopes_mask, 0, 0), | |
462 | SD_BUS_PROPERTY("DNS", "a(iay)", property_get_dns, 0, 0), | |
ad44b56b | 463 | SD_BUS_PROPERTY("Domains", "a(sb)", property_get_domains, 0, 0), |
3abaabda LP |
464 | SD_BUS_PROPERTY("LLMNR", "s", property_get_resolve_support, offsetof(Link, llmnr_support), 0), |
465 | SD_BUS_PROPERTY("MulticastDNS", "s", property_get_resolve_support, offsetof(Link, mdns_support), 0), | |
466 | SD_BUS_PROPERTY("DNSSEC", "s", property_get_dnssec_mode, offsetof(Link, dnssec_mode), 0), | |
467 | SD_BUS_PROPERTY("DNSSECNegativeTrustAnchors", "as", property_get_ntas, 0, 0), | |
c2cf6e0b | 468 | SD_BUS_PROPERTY("DNSSECSupported", "b", property_get_dnssec_supported, 0, 0), |
3abaabda | 469 | |
d2ec6608 | 470 | SD_BUS_METHOD("SetDNS", "a(iay)", NULL, bus_link_method_set_dns_servers, 0), |
ee116b54 | 471 | SD_BUS_METHOD("SetDomains", "a(sb)", NULL, bus_link_method_set_domains, 0), |
d2ec6608 LP |
472 | SD_BUS_METHOD("SetLLMNR", "s", NULL, bus_link_method_set_llmnr, 0), |
473 | SD_BUS_METHOD("SetMulticastDNS", "s", NULL, bus_link_method_set_mdns, 0), | |
474 | SD_BUS_METHOD("SetDNSSEC", "s", NULL, bus_link_method_set_dnssec, 0), | |
475 | SD_BUS_METHOD("SetDNSSECNegativeTrustAnchors", "as", NULL, bus_link_method_set_dnssec_negative_trust_anchors, 0), | |
476 | SD_BUS_METHOD("Revert", NULL, NULL, bus_link_method_revert, 0), | |
477 | ||
3abaabda LP |
478 | SD_BUS_VTABLE_END |
479 | }; | |
480 | ||
481 | int link_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) { | |
482 | _cleanup_free_ char *e = NULL; | |
483 | Manager *m = userdata; | |
484 | int ifindex; | |
485 | Link *link; | |
486 | int r; | |
487 | ||
488 | assert(bus); | |
489 | assert(path); | |
490 | assert(interface); | |
491 | assert(found); | |
492 | assert(m); | |
493 | ||
494 | r = sd_bus_path_decode(path, "/org/freedesktop/resolve1/link", &e); | |
495 | if (r <= 0) | |
496 | return 0; | |
497 | ||
498 | r = parse_ifindex(e, &ifindex); | |
499 | if (r < 0) | |
500 | return 0; | |
501 | ||
502 | link = hashmap_get(m->links, INT_TO_PTR(ifindex)); | |
503 | if (!link) | |
504 | return 0; | |
505 | ||
506 | *found = link; | |
507 | return 1; | |
508 | } | |
509 | ||
510 | char *link_bus_path(Link *link) { | |
511 | _cleanup_free_ char *ifindex = NULL; | |
512 | char *p; | |
513 | int r; | |
514 | ||
515 | assert(link); | |
516 | ||
517 | if (asprintf(&ifindex, "%i", link->ifindex) < 0) | |
518 | return NULL; | |
519 | ||
520 | r = sd_bus_path_encode("/org/freedesktop/resolve1/link", ifindex, &p); | |
521 | if (r < 0) | |
522 | return NULL; | |
523 | ||
524 | return p; | |
525 | } | |
526 | ||
527 | int link_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) { | |
528 | _cleanup_strv_free_ char **l = NULL; | |
529 | Manager *m = userdata; | |
530 | Link *link; | |
531 | Iterator i; | |
532 | unsigned c = 0; | |
533 | ||
534 | assert(bus); | |
535 | assert(path); | |
536 | assert(m); | |
537 | assert(nodes); | |
538 | ||
539 | l = new0(char*, hashmap_size(m->links) + 1); | |
540 | if (!l) | |
541 | return -ENOMEM; | |
542 | ||
543 | HASHMAP_FOREACH(link, m->links, i) { | |
544 | char *p; | |
545 | ||
546 | p = link_bus_path(link); | |
547 | if (!p) | |
548 | return -ENOMEM; | |
549 | ||
550 | l[c++] = p; | |
551 | } | |
552 | ||
553 | l[c] = NULL; | |
554 | *nodes = l; | |
555 | l = NULL; | |
556 | ||
557 | return 1; | |
558 | } |