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udev: gracefully handle ENODEV or friends in opening device node
[thirdparty/systemd.git] / src / resolve / resolved-link-bus.c
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1/* SPDX-License-Identifier: LGPL-2.1-or-later */
2
3#include <net/if.h>
4
5#include "sd-bus.h"
6
7#include "alloc-util.h"
8#include "bus-common-errors.h"
9#include "bus-get-properties.h"
10#include "bus-message-util.h"
11#include "bus-object.h"
12#include "bus-polkit.h"
13#include "dns-domain.h"
14#include "log-link.h"
15#include "parse-util.h"
16#include "resolve-util.h"
17#include "resolved-bus.h"
18#include "resolved-def.h"
19#include "resolved-dns-search-domain.h"
20#include "resolved-dns-server.h"
21#include "resolved-link.h"
22#include "resolved-link-bus.h"
23#include "resolved-llmnr.h"
24#include "resolved-manager.h"
25#include "resolved-mdns.h"
26#include "resolved-resolv-conf.h"
27#include "set.h"
28#include "socket-netlink.h"
29#include "stdio-util.h"
30#include "string-util.h"
31#include "strv.h"
32
33static BUS_DEFINE_PROPERTY_GET(property_get_dnssec_supported, "b", Link, link_dnssec_supported);
34static BUS_DEFINE_PROPERTY_GET2(property_get_dnssec_mode, "s", Link, link_get_dnssec_mode, dnssec_mode_to_string);
35static BUS_DEFINE_PROPERTY_GET2(property_get_llmnr_support, "s", Link, link_get_llmnr_support, resolve_support_to_string);
36static BUS_DEFINE_PROPERTY_GET2(property_get_mdns_support, "s", Link, link_get_mdns_support, resolve_support_to_string);
37static BUS_DEFINE_PROPERTY_GET(property_get_default_route, "b", Link, link_get_default_route);
38
39static int property_get_dns_over_tls_mode(
40 sd_bus *bus,
41 const char *path,
42 const char *interface,
43 const char *property,
44 sd_bus_message *reply,
45 void *userdata,
46 sd_bus_error *error) {
47
48 Link *l = ASSERT_PTR(userdata);
49
50 assert(reply);
51
52 return sd_bus_message_append(reply, "s", dns_over_tls_mode_to_string(link_get_dns_over_tls_mode(l)));
53}
54
55static int property_get_dns_internal(
56 sd_bus *bus,
57 const char *path,
58 const char *interface,
59 const char *property,
60 sd_bus_message *reply,
61 void *userdata,
62 sd_bus_error *error,
63 bool extended) {
64
65 Link *l = ASSERT_PTR(userdata);
66 int r;
67
68 assert(reply);
69
70 r = sd_bus_message_open_container(reply, 'a', extended ? "(iayqs)" : "(iay)");
71 if (r < 0)
72 return r;
73
74 LIST_FOREACH(servers, s, l->dns_servers) {
75 r = bus_dns_server_append(reply, s, false, extended);
76 if (r < 0)
77 return r;
78 }
79
80 return sd_bus_message_close_container(reply);
81}
82
83static int property_get_dns(
84 sd_bus *bus,
85 const char *path,
86 const char *interface,
87 const char *property,
88 sd_bus_message *reply,
89 void *userdata,
90 sd_bus_error *error) {
91 return property_get_dns_internal(bus, path, interface, property, reply, userdata, error, false);
92}
93
94static int property_get_dns_ex(
95 sd_bus *bus,
96 const char *path,
97 const char *interface,
98 const char *property,
99 sd_bus_message *reply,
100 void *userdata,
101 sd_bus_error *error) {
102 return property_get_dns_internal(bus, path, interface, property, reply, userdata, error, true);
103}
104
105static int property_get_current_dns_server_internal(
106 sd_bus *bus,
107 const char *path,
108 const char *interface,
109 const char *property,
110 sd_bus_message *reply,
111 void *userdata,
112 sd_bus_error *error,
113 bool extended) {
114
115 DnsServer *s;
116
117 assert(reply);
118 assert(userdata);
119
120 s = *(DnsServer **) userdata;
121
122 return bus_dns_server_append(reply, s, false, extended);
123}
124
125static int property_get_current_dns_server(
126 sd_bus *bus,
127 const char *path,
128 const char *interface,
129 const char *property,
130 sd_bus_message *reply,
131 void *userdata,
132 sd_bus_error *error) {
133 return property_get_current_dns_server_internal(bus, path, interface, property, reply, userdata, error, false);
134}
135
136static int property_get_current_dns_server_ex(
137 sd_bus *bus,
138 const char *path,
139 const char *interface,
140 const char *property,
141 sd_bus_message *reply,
142 void *userdata,
143 sd_bus_error *error) {
144 return property_get_current_dns_server_internal(bus, path, interface, property, reply, userdata, error, true);
145}
146
147static int property_get_domains(
148 sd_bus *bus,
149 const char *path,
150 const char *interface,
151 const char *property,
152 sd_bus_message *reply,
153 void *userdata,
154 sd_bus_error *error) {
155
156 Link *l = ASSERT_PTR(userdata);
157 int r;
158
159 assert(reply);
160
161 r = sd_bus_message_open_container(reply, 'a', "(sb)");
162 if (r < 0)
163 return r;
164
165 LIST_FOREACH(domains, d, l->search_domains) {
166 r = sd_bus_message_append(reply, "(sb)", d->name, d->route_only);
167 if (r < 0)
168 return r;
169 }
170
171 return sd_bus_message_close_container(reply);
172}
173
174static int property_get_scopes_mask(
175 sd_bus *bus,
176 const char *path,
177 const char *interface,
178 const char *property,
179 sd_bus_message *reply,
180 void *userdata,
181 sd_bus_error *error) {
182
183 Link *l = ASSERT_PTR(userdata);
184 uint64_t mask;
185
186 assert(reply);
187
188 mask = (l->unicast_scope ? SD_RESOLVED_DNS : 0) |
189 (l->llmnr_ipv4_scope ? SD_RESOLVED_LLMNR_IPV4 : 0) |
190 (l->llmnr_ipv6_scope ? SD_RESOLVED_LLMNR_IPV6 : 0) |
191 (l->mdns_ipv4_scope ? SD_RESOLVED_MDNS_IPV4 : 0) |
192 (l->mdns_ipv6_scope ? SD_RESOLVED_MDNS_IPV6 : 0);
193
194 return sd_bus_message_append(reply, "t", mask);
195}
196
197static int verify_unmanaged_link(Link *l, sd_bus_error *error) {
198 assert(l);
199
200 if (l->flags & IFF_LOOPBACK)
201 return sd_bus_error_setf(error, BUS_ERROR_LINK_BUSY, "Link %s is loopback device.", l->ifname);
202 if (l->is_managed)
203 return sd_bus_error_setf(error, BUS_ERROR_LINK_BUSY, "Link %s is managed.", l->ifname);
204
205 return 0;
206}
207
208static int bus_link_method_set_dns_servers_internal(sd_bus_message *message, void *userdata, sd_bus_error *error, bool extended) {
209 _cleanup_free_ char *j = NULL;
210 struct in_addr_full **dns;
211 bool changed = false;
212 Link *l = ASSERT_PTR(userdata);
213 size_t n;
214 int r;
215
216 assert(message);
217
218 r = verify_unmanaged_link(l, error);
219 if (r < 0)
220 return r;
221
222 r = bus_message_read_dns_servers(message, error, extended, &dns, &n);
223 if (r < 0)
224 return r;
225
226 r = bus_verify_polkit_async(
227 message,
228 "org.freedesktop.resolve1.set-dns-servers",
229 (const char**) STRV_MAKE("interface", l->ifname),
230 &l->manager->polkit_registry, error);
231 if (r < 0)
232 goto finalize;
233 if (r == 0) {
234 r = 1; /* Polkit will call us back */
235 goto finalize;
236 }
237
238 for (size_t i = 0; i < n; i++) {
239 const char *s;
240
241 s = in_addr_full_to_string(dns[i]);
242 if (!s) {
243 r = -ENOMEM;
244 goto finalize;
245 }
246
247 if (!strextend_with_separator(&j, ", ", s)) {
248 r = -ENOMEM;
249 goto finalize;
250 }
251 }
252
253 bus_client_log(message, "DNS server change");
254
255 dns_server_mark_all(l->dns_servers);
256
257 for (size_t i = 0; i < n; i++) {
258 DnsServer *s;
259
260 s = dns_server_find(l->dns_servers, dns[i]->family, &dns[i]->address, dns[i]->port, 0, dns[i]->server_name);
261 if (s)
262 dns_server_move_back_and_unmark(s);
263 else {
264 r = dns_server_new(l->manager, NULL, DNS_SERVER_LINK, l, /* delegate= */ NULL, dns[i]->family, &dns[i]->address, dns[i]->port, 0, dns[i]->server_name, RESOLVE_CONFIG_SOURCE_DBUS);
265 if (r < 0) {
266 dns_server_unlink_all(l->dns_servers);
267 goto finalize;
268 }
269
270 changed = true;
271 }
272 }
273
274 changed = dns_server_unlink_marked(l->dns_servers) || changed;
275
276 if (changed) {
277 link_allocate_scopes(l);
278
279 (void) link_save_user(l);
280 (void) manager_write_resolv_conf(l->manager);
281 (void) manager_send_changed(l->manager, "DNS");
282 (void) manager_send_dns_configuration_changed(l->manager, l, /* reset= */ true);
283
284 if (j)
285 log_link_info(l, "Bus client set DNS server list to: %s", j);
286 else
287 log_link_info(l, "Bus client reset DNS server list.");
288 }
289
290 r = sd_bus_reply_method_return(message, NULL);
291
292finalize:
293 for (size_t i = 0; i < n; i++)
294 in_addr_full_free(dns[i]);
295 free(dns);
296
297 return r;
298}
299
300int bus_link_method_set_dns_servers(sd_bus_message *message, void *userdata, sd_bus_error *error) {
301 return bus_link_method_set_dns_servers_internal(message, userdata, error, false);
302}
303
304int bus_link_method_set_dns_servers_ex(sd_bus_message *message, void *userdata, sd_bus_error *error) {
305 return bus_link_method_set_dns_servers_internal(message, userdata, error, true);
306}
307
308int bus_link_method_set_domains(sd_bus_message *message, void *userdata, sd_bus_error *error) {
309 _cleanup_free_ char *j = NULL;
310 Link *l = ASSERT_PTR(userdata);
311 bool changed = false;
312 int r;
313
314 assert(message);
315
316 r = verify_unmanaged_link(l, error);
317 if (r < 0)
318 return r;
319
320 r = sd_bus_message_enter_container(message, 'a', "(sb)");
321 if (r < 0)
322 return r;
323
324 for (;;) {
325 _cleanup_free_ char *prefixed = NULL;
326 const char *name;
327 int route_only;
328
329 r = sd_bus_message_read(message, "(sb)", &name, &route_only);
330 if (r < 0)
331 return r;
332 if (r == 0)
333 break;
334
335 r = dns_name_is_valid(name);
336 if (r < 0)
337 return r;
338 if (r == 0)
339 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid search domain %s", name);
340 if (!route_only && dns_name_is_root(name))
341 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Root domain is not suitable as search domain");
342
343 if (route_only) {
344 prefixed = strjoin("~", name);
345 if (!prefixed)
346 return -ENOMEM;
347
348 name = prefixed;
349 }
350
351 if (!strextend_with_separator(&j, ", ", name))
352 return -ENOMEM;
353 }
354
355 r = sd_bus_message_rewind(message, false);
356 if (r < 0)
357 return r;
358
359 r = bus_verify_polkit_async(
360 message,
361 "org.freedesktop.resolve1.set-domains",
362 (const char**) STRV_MAKE("interface", l->ifname),
363 &l->manager->polkit_registry,
364 error);
365 if (r < 0)
366 return r;
367 if (r == 0)
368 return 1; /* Polkit will call us back */
369
370 bus_client_log(message, "dns domains change");
371
372 dns_search_domain_mark_all(l->search_domains);
373
374 for (;;) {
375 DnsSearchDomain *d;
376 const char *name;
377 int route_only;
378
379 r = sd_bus_message_read(message, "(sb)", &name, &route_only);
380 if (r < 0)
381 goto clear;
382 if (r == 0)
383 break;
384
385 r = dns_search_domain_find(l->search_domains, name, &d);
386 if (r < 0)
387 goto clear;
388
389 if (r > 0)
390 dns_search_domain_move_back_and_unmark(d);
391 else {
392 r = dns_search_domain_new(l->manager, &d, DNS_SEARCH_DOMAIN_LINK, l, /* delegate= */ NULL, name);
393 if (r < 0)
394 goto clear;
395
396 changed = true;
397 }
398
399 d->route_only = route_only;
400 }
401
402 r = sd_bus_message_exit_container(message);
403 if (r < 0)
404 goto clear;
405
406 changed = dns_search_domain_unlink_marked(l->search_domains) || changed;
407
408 if (changed) {
409 (void) link_save_user(l);
410 (void) manager_write_resolv_conf(l->manager);
411
412 if (j)
413 log_link_info(l, "Bus client set search domain list to: %s", j);
414 else
415 log_link_info(l, "Bus client reset search domain list.");
416 }
417
418 return sd_bus_reply_method_return(message, NULL);
419
420clear:
421 dns_search_domain_unlink_all(l->search_domains);
422 return r;
423}
424
425int bus_link_method_set_default_route(sd_bus_message *message, void *userdata, sd_bus_error *error) {
426 Link *l = ASSERT_PTR(userdata);
427 int r, b;
428
429 assert(message);
430
431 r = verify_unmanaged_link(l, error);
432 if (r < 0)
433 return r;
434
435 r = sd_bus_message_read(message, "b", &b);
436 if (r < 0)
437 return r;
438
439 r = bus_verify_polkit_async(
440 message,
441 "org.freedesktop.resolve1.set-default-route",
442 (const char**) STRV_MAKE("interface", l->ifname),
443 &l->manager->polkit_registry,
444 error);
445 if (r < 0)
446 return r;
447 if (r == 0)
448 return 1; /* Polkit will call us back */
449
450 bus_client_log(message, "dns default route change");
451
452 if (l->default_route != b) {
453 link_set_default_route(l, b);
454 (void) link_save_user(l);
455 (void) manager_write_resolv_conf(l->manager);
456
457 log_link_info(l, "Bus client set default route setting: %s", yes_no(b));
458 }
459
460 return sd_bus_reply_method_return(message, NULL);
461}
462
463int bus_link_method_set_llmnr(sd_bus_message *message, void *userdata, sd_bus_error *error) {
464 Link *l = ASSERT_PTR(userdata);
465 ResolveSupport mode;
466 const char *llmnr;
467 int r;
468
469 assert(message);
470
471 r = verify_unmanaged_link(l, error);
472 if (r < 0)
473 return r;
474
475 r = sd_bus_message_read(message, "s", &llmnr);
476 if (r < 0)
477 return r;
478
479 if (isempty(llmnr))
480 mode = RESOLVE_SUPPORT_YES;
481 else {
482 mode = resolve_support_from_string(llmnr);
483 if (mode < 0)
484 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid LLMNR setting: %s", llmnr);
485 }
486
487 r = bus_verify_polkit_async(
488 message,
489 "org.freedesktop.resolve1.set-llmnr",
490 (const char**) STRV_MAKE("interface", l->ifname),
491 &l->manager->polkit_registry,
492 error);
493 if (r < 0)
494 return r;
495 if (r == 0)
496 return 1; /* Polkit will call us back */
497
498 bus_client_log(message, "LLMNR change");
499
500 if (l->llmnr_support != mode) {
501 l->llmnr_support = mode;
502 link_allocate_scopes(l);
503 link_add_rrs(l, false);
504
505 (void) link_save_user(l);
506
507 manager_llmnr_maybe_stop(l->manager);
508
509 log_link_info(l, "Bus client set LLMNR setting: %s", resolve_support_to_string(mode));
510 }
511
512 return sd_bus_reply_method_return(message, NULL);
513}
514
515int bus_link_method_set_mdns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
516 Link *l = ASSERT_PTR(userdata);
517 ResolveSupport mode;
518 const char *mdns;
519 int r;
520
521 assert(message);
522
523 r = verify_unmanaged_link(l, error);
524 if (r < 0)
525 return r;
526
527 r = sd_bus_message_read(message, "s", &mdns);
528 if (r < 0)
529 return r;
530
531 if (isempty(mdns))
532 mode = RESOLVE_SUPPORT_YES;
533 else {
534 mode = resolve_support_from_string(mdns);
535 if (mode < 0)
536 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid MulticastDNS setting: %s", mdns);
537 }
538
539 r = bus_verify_polkit_async(
540 message,
541 "org.freedesktop.resolve1.set-mdns",
542 (const char**) STRV_MAKE("interface", l->ifname),
543 &l->manager->polkit_registry,
544 error);
545 if (r < 0)
546 return r;
547 if (r == 0)
548 return 1; /* Polkit will call us back */
549
550 bus_client_log(message, "mDNS change");
551
552 if (l->mdns_support != mode) {
553 l->mdns_support = mode;
554 link_allocate_scopes(l);
555 link_add_rrs(l, false);
556
557 (void) link_save_user(l);
558
559 manager_mdns_maybe_stop(l->manager);
560
561 log_link_info(l, "Bus client set MulticastDNS setting: %s", resolve_support_to_string(mode));
562 }
563
564 return sd_bus_reply_method_return(message, NULL);
565}
566
567int bus_link_method_set_dns_over_tls(sd_bus_message *message, void *userdata, sd_bus_error *error) {
568 Link *l = ASSERT_PTR(userdata);
569 const char *dns_over_tls;
570 DnsOverTlsMode mode;
571 int r;
572
573 assert(message);
574
575 r = verify_unmanaged_link(l, error);
576 if (r < 0)
577 return r;
578
579 r = sd_bus_message_read(message, "s", &dns_over_tls);
580 if (r < 0)
581 return r;
582
583 if (isempty(dns_over_tls))
584 mode = _DNS_OVER_TLS_MODE_INVALID;
585 else {
586 mode = dns_over_tls_mode_from_string(dns_over_tls);
587 if (mode < 0)
588 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid DNSOverTLS setting: %s", dns_over_tls);
589 }
590
591 r = bus_verify_polkit_async(
592 message,
593 "org.freedesktop.resolve1.set-dns-over-tls",
594 (const char**) STRV_MAKE("interface", l->ifname),
595 &l->manager->polkit_registry,
596 error);
597 if (r < 0)
598 return r;
599 if (r == 0)
600 return 1; /* Polkit will call us back */
601
602 bus_client_log(message, "D-o-T change");
603
604 if (l->dns_over_tls_mode != mode) {
605 link_set_dns_over_tls_mode(l, mode);
606 link_allocate_scopes(l);
607
608 (void) link_save_user(l);
609
610 log_link_info(l, "Bus client set DNSOverTLS setting: %s",
611 mode < 0 ? "default" : dns_over_tls_mode_to_string(mode));
612 }
613
614 return sd_bus_reply_method_return(message, NULL);
615}
616
617int bus_link_method_set_dnssec(sd_bus_message *message, void *userdata, sd_bus_error *error) {
618 Link *l = ASSERT_PTR(userdata);
619 const char *dnssec;
620 DnssecMode mode;
621 int r;
622
623 assert(message);
624
625 r = verify_unmanaged_link(l, error);
626 if (r < 0)
627 return r;
628
629 r = sd_bus_message_read(message, "s", &dnssec);
630 if (r < 0)
631 return r;
632
633 if (isempty(dnssec))
634 mode = _DNSSEC_MODE_INVALID;
635 else {
636 mode = dnssec_mode_from_string(dnssec);
637 if (mode < 0)
638 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid DNSSEC setting: %s", dnssec);
639 }
640
641 r = bus_verify_polkit_async(
642 message,
643 "org.freedesktop.resolve1.set-dnssec",
644 (const char**) STRV_MAKE("interface", l->ifname),
645 &l->manager->polkit_registry,
646 error);
647 if (r < 0)
648 return r;
649 if (r == 0)
650 return 1; /* Polkit will call us back */
651
652 bus_client_log(message, "DNSSEC change");
653
654 if (l->dnssec_mode != mode) {
655 link_set_dnssec_mode(l, mode);
656 link_allocate_scopes(l);
657
658 (void) link_save_user(l);
659
660 log_link_info(l, "Bus client set DNSSEC setting: %s",
661 mode < 0 ? "default" : dnssec_mode_to_string(mode));
662 }
663
664 return sd_bus_reply_method_return(message, NULL);
665}
666
667int bus_link_method_set_dnssec_negative_trust_anchors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
668 _cleanup_set_free_ Set *ns = NULL;
669 _cleanup_strv_free_ char **ntas = NULL;
670 _cleanup_free_ char *j = NULL;
671 Link *l = ASSERT_PTR(userdata);
672 int r;
673
674 assert(message);
675
676 r = verify_unmanaged_link(l, error);
677 if (r < 0)
678 return r;
679
680 r = sd_bus_message_read_strv(message, &ntas);
681 if (r < 0)
682 return r;
683
684 STRV_FOREACH(i, ntas) {
685 r = dns_name_is_valid(*i);
686 if (r < 0)
687 return r;
688 if (r == 0)
689 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
690 "Invalid negative trust anchor domain: %s", *i);
691
692 r = set_put_strdup_full(&ns, &dns_name_hash_ops_free, *i);
693 if (r < 0)
694 return r;
695
696 if (!strextend_with_separator(&j, ", ", *i))
697 return -ENOMEM;
698 }
699
700 r = bus_verify_polkit_async(
701 message,
702 "org.freedesktop.resolve1.set-dnssec-negative-trust-anchors",
703 (const char**) STRV_MAKE("interface", l->ifname),
704 &l->manager->polkit_registry,
705 error);
706 if (r < 0)
707 return r;
708 if (r == 0)
709 return 1; /* Polkit will call us back */
710
711 bus_client_log(message, "DNSSEC NTA change");
712
713 if (!set_equal(ns, l->dnssec_negative_trust_anchors)) {
714 set_free_and_replace(l->dnssec_negative_trust_anchors, ns);
715
716 (void) link_save_user(l);
717
718 if (j)
719 log_link_info(l, "Bus client set NTA list to: %s", j);
720 else
721 log_link_info(l, "Bus client reset NTA list.");
722 }
723
724 return sd_bus_reply_method_return(message, NULL);
725}
726
727int bus_link_method_revert(sd_bus_message *message, void *userdata, sd_bus_error *error) {
728 Link *l = ASSERT_PTR(userdata);
729 int r;
730
731 assert(message);
732
733 r = verify_unmanaged_link(l, error);
734 if (r < 0)
735 return r;
736
737 r = bus_verify_polkit_async(
738 message,
739 "org.freedesktop.resolve1.revert",
740 (const char**) STRV_MAKE("interface", l->ifname),
741 &l->manager->polkit_registry,
742 error);
743 if (r < 0)
744 return r;
745 if (r == 0)
746 return 1; /* Polkit will call us back */
747
748 bus_client_log(message, "revert");
749
750 link_flush_settings(l);
751 link_allocate_scopes(l);
752 link_add_rrs(l, false);
753
754 (void) link_save_user(l);
755 (void) manager_write_resolv_conf(l->manager);
756 (void) manager_send_changed(l->manager, "DNS");
757 (void) manager_send_dns_configuration_changed(l->manager, l, /* reset= */ true);
758
759 manager_llmnr_maybe_stop(l->manager);
760 manager_mdns_maybe_stop(l->manager);
761
762 return sd_bus_reply_method_return(message, NULL);
763}
764
765static int link_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) {
766 _cleanup_free_ char *e = NULL;
767 Manager *m = ASSERT_PTR(userdata);
768 Link *link;
769 int ifindex, r;
770
771 assert(bus);
772 assert(path);
773 assert(interface);
774 assert(found);
775
776 r = sd_bus_path_decode(path, "/org/freedesktop/resolve1/link", &e);
777 if (r <= 0)
778 return 0;
779
780 ifindex = parse_ifindex(e);
781 if (ifindex < 0)
782 return 0;
783
784 link = hashmap_get(m->links, INT_TO_PTR(ifindex));
785 if (!link)
786 return 0;
787
788 *found = link;
789 return 1;
790}
791
792char* link_bus_path(const Link *link) {
793 char *p, ifindex[DECIMAL_STR_MAX(link->ifindex)];
794 int r;
795
796 assert(link);
797
798 xsprintf(ifindex, "%i", link->ifindex);
799
800 r = sd_bus_path_encode("/org/freedesktop/resolve1/link", ifindex, &p);
801 if (r < 0)
802 return NULL;
803
804 return p;
805}
806
807static int link_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) {
808 _cleanup_strv_free_ char **l = NULL;
809 Manager *m = ASSERT_PTR(userdata);
810 Link *link;
811 unsigned c = 0;
812
813 assert(bus);
814 assert(path);
815 assert(nodes);
816
817 l = new0(char*, hashmap_size(m->links) + 1);
818 if (!l)
819 return -ENOMEM;
820
821 HASHMAP_FOREACH(link, m->links) {
822 char *p;
823
824 p = link_bus_path(link);
825 if (!p)
826 return -ENOMEM;
827
828 l[c++] = p;
829 }
830
831 l[c] = NULL;
832 *nodes = TAKE_PTR(l);
833
834 return 1;
835}
836
837static const sd_bus_vtable link_vtable[] = {
838 SD_BUS_VTABLE_START(0),
839
840 SD_BUS_PROPERTY("ScopesMask", "t", property_get_scopes_mask, 0, 0),
841 SD_BUS_PROPERTY("DNS", "a(iay)", property_get_dns, 0, 0),
842 SD_BUS_PROPERTY("DNSEx", "a(iayqs)", property_get_dns_ex, 0, 0),
843 SD_BUS_PROPERTY("CurrentDNSServer", "(iay)", property_get_current_dns_server, offsetof(Link, current_dns_server), 0),
844 SD_BUS_PROPERTY("CurrentDNSServerEx", "(iayqs)", property_get_current_dns_server_ex, offsetof(Link, current_dns_server), 0),
845 SD_BUS_PROPERTY("Domains", "a(sb)", property_get_domains, 0, 0),
846 SD_BUS_PROPERTY("DefaultRoute", "b", property_get_default_route, 0, 0),
847 SD_BUS_PROPERTY("LLMNR", "s", property_get_llmnr_support, 0, 0),
848 SD_BUS_PROPERTY("MulticastDNS", "s", property_get_mdns_support, 0, 0),
849 SD_BUS_PROPERTY("DNSOverTLS", "s", property_get_dns_over_tls_mode, 0, 0),
850 SD_BUS_PROPERTY("DNSSEC", "s", property_get_dnssec_mode, 0, 0),
851 SD_BUS_PROPERTY("DNSSECNegativeTrustAnchors", "as", bus_property_get_string_set, offsetof(Link, dnssec_negative_trust_anchors), 0),
852 SD_BUS_PROPERTY("DNSSECSupported", "b", property_get_dnssec_supported, 0, 0),
853
854 SD_BUS_METHOD_WITH_ARGS("SetDNS",
855 SD_BUS_ARGS("a(iay)", addresses),
856 SD_BUS_NO_RESULT,
857 bus_link_method_set_dns_servers,
858 SD_BUS_VTABLE_UNPRIVILEGED),
859 SD_BUS_METHOD_WITH_ARGS("SetDNSEx",
860 SD_BUS_ARGS("a(iayqs)", addresses),
861 SD_BUS_NO_RESULT,
862 bus_link_method_set_dns_servers_ex,
863 SD_BUS_VTABLE_UNPRIVILEGED),
864 SD_BUS_METHOD_WITH_ARGS("SetDomains",
865 SD_BUS_ARGS("a(sb)", domains),
866 SD_BUS_NO_RESULT,
867 bus_link_method_set_domains,
868 SD_BUS_VTABLE_UNPRIVILEGED),
869 SD_BUS_METHOD_WITH_ARGS("SetDefaultRoute",
870 SD_BUS_ARGS("b", enable),
871 SD_BUS_NO_RESULT,
872 bus_link_method_set_default_route,
873 SD_BUS_VTABLE_UNPRIVILEGED),
874 SD_BUS_METHOD_WITH_ARGS("SetLLMNR",
875 SD_BUS_ARGS("s", mode),
876 SD_BUS_NO_RESULT,
877 bus_link_method_set_llmnr,
878 SD_BUS_VTABLE_UNPRIVILEGED),
879 SD_BUS_METHOD_WITH_ARGS("SetMulticastDNS",
880 SD_BUS_ARGS("s", mode),
881 SD_BUS_NO_RESULT,
882 bus_link_method_set_mdns,
883 SD_BUS_VTABLE_UNPRIVILEGED),
884 SD_BUS_METHOD_WITH_ARGS("SetDNSOverTLS",
885 SD_BUS_ARGS("s", mode),
886 SD_BUS_NO_RESULT,
887 bus_link_method_set_dns_over_tls,
888 SD_BUS_VTABLE_UNPRIVILEGED),
889 SD_BUS_METHOD_WITH_ARGS("SetDNSSEC",
890 SD_BUS_ARGS("s", mode),
891 SD_BUS_NO_RESULT,
892 bus_link_method_set_dnssec,
893 SD_BUS_VTABLE_UNPRIVILEGED),
894 SD_BUS_METHOD_WITH_ARGS("SetDNSSECNegativeTrustAnchors",
895 SD_BUS_ARGS("as", names),
896 SD_BUS_NO_RESULT,
897 bus_link_method_set_dnssec_negative_trust_anchors,
898 SD_BUS_VTABLE_UNPRIVILEGED),
899 SD_BUS_METHOD_WITH_ARGS("Revert",
900 SD_BUS_NO_ARGS,
901 SD_BUS_NO_RESULT,
902 bus_link_method_revert,
903 SD_BUS_VTABLE_UNPRIVILEGED),
904
905 SD_BUS_VTABLE_END
906};
907
908const BusObjectImplementation link_object = {
909 "/org/freedesktop/resolve1/link",
910 "org.freedesktop.resolve1.Link",
911 .fallback_vtables = BUS_FALLBACK_VTABLES({link_vtable, link_object_find}),
912 .node_enumerator = link_node_enumerator,
913};
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