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