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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
74b2466e | 2 | |
b5efdb8a | 3 | #include "alloc-util.h" |
96aad8d1 | 4 | #include "bus-common-errors.h" |
74b2466e | 5 | #include "bus-util.h" |
4ad7f276 | 6 | #include "dns-domain.h" |
ef118d00 | 7 | #include "missing_capability.h" |
39d8db04 | 8 | #include "resolved-bus.h" |
51323288 | 9 | #include "resolved-def.h" |
c3be369f | 10 | #include "resolved-dns-synthesize.h" |
c3036641 DR |
11 | #include "resolved-dnssd.h" |
12 | #include "resolved-dnssd-bus.h" | |
3abaabda | 13 | #include "resolved-link-bus.h" |
84b0f133 | 14 | #include "user-util.h" |
c3036641 | 15 | #include "utf8.h" |
74b2466e | 16 | |
bf4e5c4c YW |
17 | BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_resolve_support, resolve_support, ResolveSupport); |
18 | ||
ad867662 | 19 | static int reply_query_state(DnsQuery *q) { |
ad867662 LP |
20 | |
21 | switch (q->state) { | |
74b2466e | 22 | |
ec2c5e43 | 23 | case DNS_TRANSACTION_NO_SERVERS: |
309e9d86 | 24 | return sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_NAME_SERVERS, "No appropriate name servers or networks for name found"); |
74b2466e | 25 | |
ec2c5e43 | 26 | case DNS_TRANSACTION_TIMEOUT: |
ad867662 | 27 | return sd_bus_reply_method_errorf(q->request, SD_BUS_ERROR_TIMEOUT, "Query timed out"); |
74b2466e | 28 | |
ec2c5e43 | 29 | case DNS_TRANSACTION_ATTEMPTS_MAX_REACHED: |
ad867662 LP |
30 | return sd_bus_reply_method_errorf(q->request, SD_BUS_ERROR_TIMEOUT, "All attempts to contact name servers or networks failed"); |
31 | ||
818f766b LP |
32 | case DNS_TRANSACTION_INVALID_REPLY: |
33 | return sd_bus_reply_method_errorf(q->request, BUS_ERROR_INVALID_REPLY, "Received invalid reply"); | |
34 | ||
7cc6ed7b LP |
35 | case DNS_TRANSACTION_ERRNO: |
36 | return sd_bus_reply_method_errnof(q->request, q->answer_errno, "Lookup failed due to system error: %m"); | |
ad867662 | 37 | |
818f766b LP |
38 | case DNS_TRANSACTION_ABORTED: |
39 | return sd_bus_reply_method_errorf(q->request, BUS_ERROR_ABORTED, "Query aborted"); | |
74b2466e | 40 | |
547973de | 41 | case DNS_TRANSACTION_DNSSEC_FAILED: |
a761c1ca | 42 | return sd_bus_reply_method_errorf(q->request, BUS_ERROR_DNSSEC_FAILED, "DNSSEC validation failed: %s", |
019036a4 | 43 | dnssec_result_to_string(q->answer_dnssec_result)); |
547973de | 44 | |
b2b796b8 LP |
45 | case DNS_TRANSACTION_NO_TRUST_ANCHOR: |
46 | return sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_TRUST_ANCHOR, "No suitable trust anchor known"); | |
47 | ||
91adc4db LP |
48 | case DNS_TRANSACTION_RR_TYPE_UNSUPPORTED: |
49 | return sd_bus_reply_method_errorf(q->request, BUS_ERROR_RR_TYPE_UNSUPPORTED, "Server does not support requested resource record type"); | |
50 | ||
edbcc1fd LP |
51 | case DNS_TRANSACTION_NETWORK_DOWN: |
52 | return sd_bus_reply_method_errorf(q->request, BUS_ERROR_NETWORK_DOWN, "Network is down"); | |
53 | ||
0791110f LP |
54 | case DNS_TRANSACTION_NOT_FOUND: |
55 | /* We return this as NXDOMAIN. This is only generated when a host doesn't implement LLMNR/TCP, and we | |
56 | * thus quickly know that we cannot resolve an in-addr.arpa or ip6.arpa address. */ | |
57 | return sd_bus_reply_method_errorf(q->request, _BUS_ERROR_DNS "NXDOMAIN", "'%s' not found", dns_query_string(q)); | |
58 | ||
3bbdc31d | 59 | case DNS_TRANSACTION_RCODE_FAILURE: { |
4afd3348 | 60 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
74b2466e | 61 | |
faa133f3 | 62 | if (q->answer_rcode == DNS_RCODE_NXDOMAIN) |
23b298bc | 63 | sd_bus_error_setf(&error, _BUS_ERROR_DNS "NXDOMAIN", "'%s' not found", dns_query_string(q)); |
74b2466e LP |
64 | else { |
65 | const char *rc, *n; | |
3347dd5e | 66 | char p[DECIMAL_STR_MAX(q->answer_rcode)]; |
74b2466e | 67 | |
faa133f3 | 68 | rc = dns_rcode_to_string(q->answer_rcode); |
74b2466e | 69 | if (!rc) { |
faa133f3 | 70 | sprintf(p, "%i", q->answer_rcode); |
74b2466e LP |
71 | rc = p; |
72 | } | |
73 | ||
63c372cb | 74 | n = strjoina(_BUS_ERROR_DNS, rc); |
23b298bc | 75 | sd_bus_error_setf(&error, n, "Could not resolve '%s', server or network returned error %s", dns_query_string(q), rc); |
74b2466e LP |
76 | } |
77 | ||
ad867662 | 78 | return sd_bus_reply_method_error(q->request, &error); |
74b2466e LP |
79 | } |
80 | ||
ec2c5e43 LP |
81 | case DNS_TRANSACTION_NULL: |
82 | case DNS_TRANSACTION_PENDING: | |
ef9fb66c | 83 | case DNS_TRANSACTION_VALIDATING: |
ec2c5e43 | 84 | case DNS_TRANSACTION_SUCCESS: |
8ba9fd9c | 85 | default: |
ad867662 LP |
86 | assert_not_reached("Impossible state"); |
87 | } | |
88 | } | |
74b2466e | 89 | |
78c6a153 | 90 | static int append_address(sd_bus_message *reply, DnsResourceRecord *rr, int ifindex) { |
8ba9fd9c LP |
91 | int r; |
92 | ||
93 | assert(reply); | |
94 | assert(rr); | |
95 | ||
78c6a153 LP |
96 | r = sd_bus_message_open_container(reply, 'r', "iiay"); |
97 | if (r < 0) | |
98 | return r; | |
99 | ||
100 | r = sd_bus_message_append(reply, "i", ifindex); | |
8ba9fd9c LP |
101 | if (r < 0) |
102 | return r; | |
103 | ||
faa133f3 | 104 | if (rr->key->type == DNS_TYPE_A) { |
0dd25fb9 | 105 | r = sd_bus_message_append(reply, "i", AF_INET); |
8ba9fd9c LP |
106 | if (r < 0) |
107 | return r; | |
108 | ||
109 | r = sd_bus_message_append_array(reply, 'y', &rr->a.in_addr, sizeof(struct in_addr)); | |
faa133f3 LP |
110 | |
111 | } else if (rr->key->type == DNS_TYPE_AAAA) { | |
0dd25fb9 | 112 | r = sd_bus_message_append(reply, "i", AF_INET6); |
8ba9fd9c LP |
113 | if (r < 0) |
114 | return r; | |
115 | ||
116 | r = sd_bus_message_append_array(reply, 'y', &rr->aaaa.in6_addr, sizeof(struct in6_addr)); | |
faa133f3 LP |
117 | } else |
118 | return -EAFNOSUPPORT; | |
119 | ||
8ba9fd9c LP |
120 | if (r < 0) |
121 | return r; | |
122 | ||
8ba9fd9c LP |
123 | r = sd_bus_message_close_container(reply); |
124 | if (r < 0) | |
125 | return r; | |
126 | ||
127 | return 0; | |
128 | } | |
129 | ||
ad867662 | 130 | static void bus_method_resolve_hostname_complete(DnsQuery *q) { |
45ec7efb | 131 | _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *canonical = NULL; |
4afd3348 | 132 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
c77d2612 | 133 | _cleanup_free_ char *normalized = NULL; |
ce736ace | 134 | DnsResourceRecord *rr; |
45ec7efb | 135 | unsigned added = 0; |
ce736ace | 136 | int ifindex, r; |
74b2466e | 137 | |
ad867662 | 138 | assert(q); |
74b2466e | 139 | |
ec2c5e43 | 140 | if (q->state != DNS_TRANSACTION_SUCCESS) { |
ad867662 LP |
141 | r = reply_query_state(q); |
142 | goto finish; | |
143 | } | |
74b2466e | 144 | |
45ec7efb LP |
145 | r = dns_query_process_cname(q); |
146 | if (r == -ELOOP) { | |
23b298bc | 147 | r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_CNAME_LOOP, "CNAME loop detected, or CNAME resolving disabled on '%s'", dns_query_string(q)); |
45ec7efb LP |
148 | goto finish; |
149 | } | |
150 | if (r < 0) | |
151 | goto finish; | |
7588460a | 152 | if (r == DNS_QUERY_RESTARTED) /* This was a cname, and the query was restarted. */ |
45ec7efb LP |
153 | return; |
154 | ||
ad867662 LP |
155 | r = sd_bus_message_new_method_return(q->request, &reply); |
156 | if (r < 0) | |
157 | goto finish; | |
74b2466e | 158 | |
78c6a153 | 159 | r = sd_bus_message_open_container(reply, 'a', "(iiay)"); |
51323288 LP |
160 | if (r < 0) |
161 | goto finish; | |
8ba9fd9c | 162 | |
ce736ace LP |
163 | DNS_ANSWER_FOREACH_IFINDEX(rr, ifindex, q->answer) { |
164 | DnsQuestion *question; | |
23b298bc | 165 | |
ce736ace | 166 | question = dns_query_question_for_protocol(q, q->answer_protocol); |
23b298bc | 167 | |
ce736ace LP |
168 | r = dns_question_matches_rr(question, rr, DNS_SEARCH_DOMAIN_NAME(q->answer_search_domain)); |
169 | if (r < 0) | |
170 | goto finish; | |
171 | if (r == 0) | |
172 | continue; | |
74b2466e | 173 | |
ce736ace LP |
174 | r = append_address(reply, rr, ifindex); |
175 | if (r < 0) | |
176 | goto finish; | |
74b2466e | 177 | |
ce736ace LP |
178 | if (!canonical) |
179 | canonical = dns_resource_record_ref(rr); | |
309e9d86 | 180 | |
313cefa1 | 181 | added++; |
8ba9fd9c | 182 | } |
74b2466e | 183 | |
45ec7efb | 184 | if (added <= 0) { |
23b298bc | 185 | r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_SUCH_RR, "'%s' does not have any RR of the requested type", dns_query_string(q)); |
45ec7efb | 186 | goto finish; |
74b2466e LP |
187 | } |
188 | ||
ad867662 LP |
189 | r = sd_bus_message_close_container(reply); |
190 | if (r < 0) | |
191 | goto finish; | |
192 | ||
c77d2612 LP |
193 | /* The key names are not necessarily normalized, make sure that they are when we return them to our bus |
194 | * clients. */ | |
1c02e7ba | 195 | r = dns_name_normalize(dns_resource_key_name(canonical->key), &normalized); |
c77d2612 LP |
196 | if (r < 0) |
197 | goto finish; | |
198 | ||
45ec7efb | 199 | /* Return the precise spelling and uppercasing and CNAME target reported by the server */ |
309e9d86 | 200 | assert(canonical); |
45ec7efb LP |
201 | r = sd_bus_message_append( |
202 | reply, "st", | |
c77d2612 | 203 | normalized, |
28830a64 | 204 | SD_RESOLVED_FLAGS_MAKE(q->answer_protocol, q->answer_family, dns_query_fully_authenticated(q))); |
309e9d86 LP |
205 | if (r < 0) |
206 | goto finish; | |
207 | ||
ad867662 | 208 | r = sd_bus_send(q->manager->bus, reply, NULL); |
ad867662 | 209 | |
74b2466e | 210 | finish: |
2d4c5cbc | 211 | if (r < 0) { |
da927ba9 | 212 | log_error_errno(r, "Failed to send hostname reply: %m"); |
45ec7efb | 213 | sd_bus_reply_method_errno(q->request, r, NULL); |
2d4c5cbc | 214 | } |
74b2466e LP |
215 | |
216 | dns_query_free(q); | |
217 | } | |
218 | ||
45ec7efb | 219 | static int check_ifindex_flags(int ifindex, uint64_t *flags, uint64_t ok, sd_bus_error *error) { |
51323288 LP |
220 | assert(flags); |
221 | ||
222 | if (ifindex < 0) | |
223 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid interface index"); | |
224 | ||
45ec7efb | 225 | if (*flags & ~(SD_RESOLVED_PROTOCOLS_ALL|SD_RESOLVED_NO_CNAME|ok)) |
51323288 LP |
226 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid flags parameter"); |
227 | ||
45ec7efb LP |
228 | if ((*flags & SD_RESOLVED_PROTOCOLS_ALL) == 0) /* If no protocol is enabled, enable all */ |
229 | *flags |= SD_RESOLVED_PROTOCOLS_ALL; | |
51323288 LP |
230 | |
231 | return 0; | |
232 | } | |
233 | ||
c3be369f LP |
234 | static int parse_as_address(sd_bus_message *m, int ifindex, const char *hostname, int family, uint64_t flags) { |
235 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; | |
236 | _cleanup_free_ char *canonical = NULL; | |
237 | union in_addr_union parsed; | |
94831eae | 238 | int r, ff, parsed_ifindex = 0; |
c3be369f LP |
239 | |
240 | /* Check if the hostname is actually already an IP address formatted as string. In that case just parse it, | |
241 | * let's not attempt to look it up. */ | |
242 | ||
94831eae | 243 | r = in_addr_ifindex_from_string_auto(hostname, &ff, &parsed, &parsed_ifindex); |
c3be369f LP |
244 | if (r < 0) /* not an address */ |
245 | return 0; | |
246 | ||
247 | if (family != AF_UNSPEC && ff != family) | |
248 | return sd_bus_reply_method_errorf(m, BUS_ERROR_NO_SUCH_RR, "The specified address is not of the requested family."); | |
94831eae LP |
249 | if (ifindex > 0 && parsed_ifindex > 0 && parsed_ifindex != ifindex) |
250 | return sd_bus_reply_method_errorf(m, BUS_ERROR_NO_SUCH_RR, "The specified address interface index does not match requested interface."); | |
251 | ||
252 | if (parsed_ifindex > 0) | |
253 | ifindex = parsed_ifindex; | |
c3be369f LP |
254 | |
255 | r = sd_bus_message_new_method_return(m, &reply); | |
256 | if (r < 0) | |
257 | return r; | |
258 | ||
259 | r = sd_bus_message_open_container(reply, 'a', "(iiay)"); | |
260 | if (r < 0) | |
261 | return r; | |
262 | ||
263 | r = sd_bus_message_open_container(reply, 'r', "iiay"); | |
264 | if (r < 0) | |
265 | return r; | |
266 | ||
267 | r = sd_bus_message_append(reply, "ii", ifindex, ff); | |
268 | if (r < 0) | |
269 | return r; | |
270 | ||
271 | r = sd_bus_message_append_array(reply, 'y', &parsed, FAMILY_ADDRESS_SIZE(ff)); | |
272 | if (r < 0) | |
273 | return r; | |
274 | ||
275 | r = sd_bus_message_close_container(reply); | |
276 | if (r < 0) | |
277 | return r; | |
278 | ||
279 | r = sd_bus_message_close_container(reply); | |
280 | if (r < 0) | |
281 | return r; | |
282 | ||
283 | /* When an IP address is specified we just return it as canonical name, in order to avoid a DNS | |
284 | * look-up. However, we reformat it to make sure it's in a truly canonical form (i.e. on IPv6 the inner | |
285 | * omissions are always done the same way). */ | |
94831eae | 286 | r = in_addr_ifindex_to_string(ff, &parsed, ifindex, &canonical); |
c3be369f LP |
287 | if (r < 0) |
288 | return r; | |
289 | ||
290 | r = sd_bus_message_append(reply, "st", canonical, | |
291 | SD_RESOLVED_FLAGS_MAKE(dns_synthesize_protocol(flags), ff, true)); | |
292 | if (r < 0) | |
293 | return r; | |
294 | ||
295 | return sd_bus_send(sd_bus_message_get_bus(m), reply, NULL); | |
296 | } | |
297 | ||
19070062 | 298 | static int bus_method_resolve_hostname(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
23b298bc | 299 | _cleanup_(dns_question_unrefp) DnsQuestion *question_idna = NULL, *question_utf8 = NULL; |
74b2466e LP |
300 | Manager *m = userdata; |
301 | const char *hostname; | |
51323288 LP |
302 | int family, ifindex; |
303 | uint64_t flags; | |
74b2466e | 304 | DnsQuery *q; |
74b2466e LP |
305 | int r; |
306 | ||
74b2466e LP |
307 | assert(message); |
308 | assert(m); | |
309 | ||
45ec7efb LP |
310 | assert_cc(sizeof(int) == sizeof(int32_t)); |
311 | ||
51323288 | 312 | r = sd_bus_message_read(message, "isit", &ifindex, &hostname, &family, &flags); |
74b2466e LP |
313 | if (r < 0) |
314 | return r; | |
315 | ||
316 | if (!IN_SET(family, AF_INET, AF_INET6, AF_UNSPEC)) | |
0dd25fb9 | 317 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown address family %i", family); |
74b2466e | 318 | |
c3be369f | 319 | r = check_ifindex_flags(ifindex, &flags, SD_RESOLVED_NO_SEARCH, error); |
7b9f7afc | 320 | if (r < 0) |
45ec7efb | 321 | return r; |
74b2466e | 322 | |
c3be369f LP |
323 | r = parse_as_address(message, ifindex, hostname, family, flags); |
324 | if (r != 0) | |
325 | return r; | |
326 | ||
327 | r = dns_name_is_valid(hostname); | |
51323288 LP |
328 | if (r < 0) |
329 | return r; | |
c3be369f LP |
330 | if (r == 0) |
331 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid hostname '%s'", hostname); | |
51323288 | 332 | |
23b298bc LP |
333 | r = dns_question_new_address(&question_utf8, family, hostname, false); |
334 | if (r < 0) | |
335 | return r; | |
336 | ||
337 | r = dns_question_new_address(&question_idna, family, hostname, true); | |
ad1f3fe6 | 338 | if (r < 0 && r != -EALREADY) |
45ec7efb | 339 | return r; |
74b2466e | 340 | |
ad1f3fe6 | 341 | r = dns_query_new(m, &q, question_utf8, question_idna ?: question_utf8, ifindex, flags); |
74b2466e LP |
342 | if (r < 0) |
343 | return r; | |
344 | ||
345 | q->request = sd_bus_message_ref(message); | |
346 | q->request_family = family; | |
74b2466e | 347 | q->complete = bus_method_resolve_hostname_complete; |
011696f7 | 348 | q->suppress_unroutable_family = family == AF_UNSPEC; |
74b2466e | 349 | |
966c66e3 | 350 | r = dns_query_bus_track(q, message); |
82bd6ddd | 351 | if (r < 0) |
45ec7efb | 352 | goto fail; |
82bd6ddd | 353 | |
322345fd | 354 | r = dns_query_go(q); |
45ec7efb LP |
355 | if (r < 0) |
356 | goto fail; | |
74b2466e LP |
357 | |
358 | return 1; | |
45ec7efb LP |
359 | |
360 | fail: | |
361 | dns_query_free(q); | |
362 | return r; | |
74b2466e LP |
363 | } |
364 | ||
365 | static void bus_method_resolve_address_complete(DnsQuery *q) { | |
4afd3348 | 366 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
23b298bc | 367 | DnsQuestion *question; |
45ec7efb LP |
368 | DnsResourceRecord *rr; |
369 | unsigned added = 0; | |
370 | int ifindex, r; | |
74b2466e LP |
371 | |
372 | assert(q); | |
373 | ||
ec2c5e43 | 374 | if (q->state != DNS_TRANSACTION_SUCCESS) { |
ad867662 LP |
375 | r = reply_query_state(q); |
376 | goto finish; | |
377 | } | |
74b2466e | 378 | |
95d46fca TG |
379 | r = dns_query_process_cname(q); |
380 | if (r == -ELOOP) { | |
23b298bc | 381 | r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_CNAME_LOOP, "CNAME loop detected, or CNAME resolving disabled on '%s'", dns_query_string(q)); |
95d46fca TG |
382 | goto finish; |
383 | } | |
384 | if (r < 0) | |
385 | goto finish; | |
7588460a | 386 | if (r == DNS_QUERY_RESTARTED) /* This was a cname, and the query was restarted. */ |
95d46fca | 387 | return; |
45ec7efb | 388 | |
ad867662 LP |
389 | r = sd_bus_message_new_method_return(q->request, &reply); |
390 | if (r < 0) | |
391 | goto finish; | |
74b2466e | 392 | |
78c6a153 | 393 | r = sd_bus_message_open_container(reply, 'a', "(is)"); |
ad867662 LP |
394 | if (r < 0) |
395 | goto finish; | |
74b2466e | 396 | |
23b298bc | 397 | question = dns_query_question_for_protocol(q, q->answer_protocol); |
74b2466e | 398 | |
23b298bc | 399 | DNS_ANSWER_FOREACH_IFINDEX(rr, ifindex, q->answer) { |
c77d2612 LP |
400 | _cleanup_free_ char *normalized = NULL; |
401 | ||
23b298bc LP |
402 | r = dns_question_matches_rr(question, rr, NULL); |
403 | if (r < 0) | |
404 | goto finish; | |
405 | if (r == 0) | |
406 | continue; | |
74b2466e | 407 | |
c77d2612 LP |
408 | r = dns_name_normalize(rr->ptr.name, &normalized); |
409 | if (r < 0) | |
410 | goto finish; | |
411 | ||
412 | r = sd_bus_message_append(reply, "(is)", ifindex, normalized); | |
23b298bc LP |
413 | if (r < 0) |
414 | goto finish; | |
415 | ||
313cefa1 | 416 | added++; |
ad867662 | 417 | } |
74b2466e | 418 | |
45ec7efb | 419 | if (added <= 0) { |
ad867662 | 420 | _cleanup_free_ char *ip = NULL; |
74b2466e | 421 | |
164d025d ZJS |
422 | (void) in_addr_to_string(q->request_family, &q->request_address, &ip); |
423 | r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_SUCH_RR, | |
424 | "Address '%s' does not have any RR of requested type", strnull(ip)); | |
ad867662 | 425 | goto finish; |
74b2466e LP |
426 | } |
427 | ||
ad867662 LP |
428 | r = sd_bus_message_close_container(reply); |
429 | if (r < 0) | |
430 | goto finish; | |
74b2466e | 431 | |
28830a64 | 432 | r = sd_bus_message_append(reply, "t", SD_RESOLVED_FLAGS_MAKE(q->answer_protocol, q->answer_family, dns_query_fully_authenticated(q))); |
51323288 LP |
433 | if (r < 0) |
434 | goto finish; | |
435 | ||
ad867662 | 436 | r = sd_bus_send(q->manager->bus, reply, NULL); |
74b2466e LP |
437 | |
438 | finish: | |
2d4c5cbc | 439 | if (r < 0) { |
da927ba9 | 440 | log_error_errno(r, "Failed to send address reply: %m"); |
45ec7efb | 441 | sd_bus_reply_method_errno(q->request, r, NULL); |
2d4c5cbc | 442 | } |
74b2466e LP |
443 | |
444 | dns_query_free(q); | |
445 | } | |
446 | ||
19070062 | 447 | static int bus_method_resolve_address(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
faa133f3 | 448 | _cleanup_(dns_question_unrefp) DnsQuestion *question = NULL; |
74b2466e | 449 | Manager *m = userdata; |
faa133f3 | 450 | int family, ifindex; |
51323288 | 451 | uint64_t flags; |
74b2466e | 452 | const void *d; |
74b2466e LP |
453 | DnsQuery *q; |
454 | size_t sz; | |
455 | int r; | |
456 | ||
74b2466e LP |
457 | assert(message); |
458 | assert(m); | |
459 | ||
45ec7efb LP |
460 | assert_cc(sizeof(int) == sizeof(int32_t)); |
461 | ||
51323288 | 462 | r = sd_bus_message_read(message, "ii", &ifindex, &family); |
74b2466e LP |
463 | if (r < 0) |
464 | return r; | |
465 | ||
466 | if (!IN_SET(family, AF_INET, AF_INET6)) | |
0dd25fb9 | 467 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown address family %i", family); |
74b2466e LP |
468 | |
469 | r = sd_bus_message_read_array(message, 'y', &d, &sz); | |
470 | if (r < 0) | |
471 | return r; | |
472 | ||
0dd25fb9 | 473 | if (sz != FAMILY_ADDRESS_SIZE(family)) |
74b2466e LP |
474 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid address size"); |
475 | ||
51323288 LP |
476 | r = sd_bus_message_read(message, "t", &flags); |
477 | if (r < 0) | |
478 | return r; | |
479 | ||
45ec7efb | 480 | r = check_ifindex_flags(ifindex, &flags, 0, error); |
faa133f3 LP |
481 | if (r < 0) |
482 | return r; | |
483 | ||
45ec7efb | 484 | r = dns_question_new_reverse(&question, family, d); |
74b2466e LP |
485 | if (r < 0) |
486 | return r; | |
487 | ||
23b298bc | 488 | r = dns_query_new(m, &q, question, question, ifindex, flags|SD_RESOLVED_NO_SEARCH); |
74b2466e LP |
489 | if (r < 0) |
490 | return r; | |
491 | ||
492 | q->request = sd_bus_message_ref(message); | |
493 | q->request_family = family; | |
494 | memcpy(&q->request_address, d, sz); | |
495 | q->complete = bus_method_resolve_address_complete; | |
496 | ||
966c66e3 | 497 | r = dns_query_bus_track(q, message); |
82bd6ddd | 498 | if (r < 0) |
45ec7efb | 499 | goto fail; |
82bd6ddd | 500 | |
322345fd | 501 | r = dns_query_go(q); |
45ec7efb LP |
502 | if (r < 0) |
503 | goto fail; | |
74b2466e LP |
504 | |
505 | return 1; | |
45ec7efb LP |
506 | |
507 | fail: | |
508 | dns_query_free(q); | |
509 | return r; | |
510 | } | |
511 | ||
512 | static int bus_message_append_rr(sd_bus_message *m, DnsResourceRecord *rr, int ifindex) { | |
45ec7efb LP |
513 | int r; |
514 | ||
515 | assert(m); | |
516 | assert(rr); | |
517 | ||
518 | r = sd_bus_message_open_container(m, 'r', "iqqay"); | |
519 | if (r < 0) | |
520 | return r; | |
521 | ||
522 | r = sd_bus_message_append(m, "iqq", | |
523 | ifindex, | |
524 | rr->key->class, | |
525 | rr->key->type); | |
526 | if (r < 0) | |
527 | return r; | |
528 | ||
4e2d538f | 529 | r = dns_resource_record_to_wire_format(rr, false); |
45ec7efb LP |
530 | if (r < 0) |
531 | return r; | |
532 | ||
4e2d538f | 533 | r = sd_bus_message_append_array(m, 'y', rr->wire_format, rr->wire_format_size); |
45ec7efb LP |
534 | if (r < 0) |
535 | return r; | |
536 | ||
537 | return sd_bus_message_close_container(m); | |
74b2466e LP |
538 | } |
539 | ||
2d4c5cbc | 540 | static void bus_method_resolve_record_complete(DnsQuery *q) { |
4afd3348 | 541 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
23b298bc LP |
542 | DnsResourceRecord *rr; |
543 | DnsQuestion *question; | |
45ec7efb | 544 | unsigned added = 0; |
23b298bc | 545 | int ifindex; |
2d4c5cbc LP |
546 | int r; |
547 | ||
548 | assert(q); | |
549 | ||
ec2c5e43 | 550 | if (q->state != DNS_TRANSACTION_SUCCESS) { |
2d4c5cbc LP |
551 | r = reply_query_state(q); |
552 | goto finish; | |
553 | } | |
554 | ||
45ec7efb LP |
555 | r = dns_query_process_cname(q); |
556 | if (r == -ELOOP) { | |
23b298bc | 557 | r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_CNAME_LOOP, "CNAME loop detected, or CNAME resolving disabled on '%s'", dns_query_string(q)); |
45ec7efb LP |
558 | goto finish; |
559 | } | |
560 | if (r < 0) | |
561 | goto finish; | |
7588460a | 562 | if (r == DNS_QUERY_RESTARTED) /* This was a cname, and the query was restarted. */ |
45ec7efb LP |
563 | return; |
564 | ||
2d4c5cbc LP |
565 | r = sd_bus_message_new_method_return(q->request, &reply); |
566 | if (r < 0) | |
567 | goto finish; | |
568 | ||
78c6a153 | 569 | r = sd_bus_message_open_container(reply, 'a', "(iqqay)"); |
2d4c5cbc LP |
570 | if (r < 0) |
571 | goto finish; | |
572 | ||
23b298bc | 573 | question = dns_query_question_for_protocol(q, q->answer_protocol); |
2d4c5cbc | 574 | |
23b298bc LP |
575 | DNS_ANSWER_FOREACH_IFINDEX(rr, ifindex, q->answer) { |
576 | r = dns_question_matches_rr(question, rr, NULL); | |
577 | if (r < 0) | |
578 | goto finish; | |
579 | if (r == 0) | |
580 | continue; | |
2d4c5cbc | 581 | |
23b298bc LP |
582 | r = bus_message_append_rr(reply, rr, ifindex); |
583 | if (r < 0) | |
584 | goto finish; | |
2d4c5cbc | 585 | |
313cefa1 | 586 | added++; |
2d4c5cbc LP |
587 | } |
588 | ||
589 | if (added <= 0) { | |
23b298bc | 590 | r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_SUCH_RR, "Name '%s' does not have any RR of the requested type", dns_query_string(q)); |
2d4c5cbc LP |
591 | goto finish; |
592 | } | |
593 | ||
594 | r = sd_bus_message_close_container(reply); | |
595 | if (r < 0) | |
596 | goto finish; | |
597 | ||
28830a64 | 598 | r = sd_bus_message_append(reply, "t", SD_RESOLVED_FLAGS_MAKE(q->answer_protocol, q->answer_family, dns_query_fully_authenticated(q))); |
51323288 LP |
599 | if (r < 0) |
600 | goto finish; | |
601 | ||
2d4c5cbc LP |
602 | r = sd_bus_send(q->manager->bus, reply, NULL); |
603 | ||
604 | finish: | |
605 | if (r < 0) { | |
da927ba9 | 606 | log_error_errno(r, "Failed to send record reply: %m"); |
45ec7efb | 607 | sd_bus_reply_method_errno(q->request, r, NULL); |
2d4c5cbc LP |
608 | } |
609 | ||
610 | dns_query_free(q); | |
611 | } | |
612 | ||
19070062 | 613 | static int bus_method_resolve_record(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
2d4c5cbc LP |
614 | _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL; |
615 | _cleanup_(dns_question_unrefp) DnsQuestion *question = NULL; | |
2d4c5cbc | 616 | Manager *m = userdata; |
2d4c5cbc LP |
617 | uint16_t class, type; |
618 | const char *name; | |
51323288 LP |
619 | int r, ifindex; |
620 | uint64_t flags; | |
621 | DnsQuery *q; | |
2d4c5cbc | 622 | |
2d4c5cbc LP |
623 | assert(message); |
624 | assert(m); | |
625 | ||
45ec7efb LP |
626 | assert_cc(sizeof(int) == sizeof(int32_t)); |
627 | ||
51323288 | 628 | r = sd_bus_message_read(message, "isqqt", &ifindex, &name, &class, &type, &flags); |
2d4c5cbc LP |
629 | if (r < 0) |
630 | return r; | |
631 | ||
45ec7efb | 632 | r = dns_name_is_valid(name); |
7b9f7afc | 633 | if (r < 0) |
45ec7efb LP |
634 | return r; |
635 | if (r == 0) | |
7b9f7afc LP |
636 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid name '%s'", name); |
637 | ||
c463eb78 | 638 | if (!dns_type_is_valid_query(type)) |
eee026a7 | 639 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Specified resource record type %" PRIu16 " may not be used in a query.", type); |
6ebd1e33 LP |
640 | if (dns_type_is_zone_transer(type)) |
641 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Zone transfers not permitted via this programming interface."); | |
d0129ddb | 642 | if (dns_type_is_obsolete(type)) |
eee026a7 | 643 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Specified DNS resource record type %" PRIu16 " is obsolete.", type); |
c463eb78 | 644 | |
45ec7efb | 645 | r = check_ifindex_flags(ifindex, &flags, 0, error); |
51323288 LP |
646 | if (r < 0) |
647 | return r; | |
648 | ||
2d4c5cbc LP |
649 | question = dns_question_new(1); |
650 | if (!question) | |
651 | return -ENOMEM; | |
652 | ||
653 | key = dns_resource_key_new(class, type, name); | |
654 | if (!key) | |
655 | return -ENOMEM; | |
656 | ||
657 | r = dns_question_add(question, key); | |
658 | if (r < 0) | |
659 | return r; | |
660 | ||
23b298bc | 661 | r = dns_query_new(m, &q, question, question, ifindex, flags|SD_RESOLVED_NO_SEARCH); |
2d4c5cbc LP |
662 | if (r < 0) |
663 | return r; | |
664 | ||
17c8de63 LP |
665 | /* Let's request that the TTL is fixed up for locally cached entries, after all we return it in the wire format |
666 | * blob */ | |
667 | q->clamp_ttl = true; | |
668 | ||
2d4c5cbc | 669 | q->request = sd_bus_message_ref(message); |
2d4c5cbc LP |
670 | q->complete = bus_method_resolve_record_complete; |
671 | ||
966c66e3 | 672 | r = dns_query_bus_track(q, message); |
82bd6ddd | 673 | if (r < 0) |
45ec7efb | 674 | goto fail; |
82bd6ddd | 675 | |
2d4c5cbc | 676 | r = dns_query_go(q); |
45ec7efb LP |
677 | if (r < 0) |
678 | goto fail; | |
679 | ||
680 | return 1; | |
681 | ||
682 | fail: | |
683 | dns_query_free(q); | |
684 | return r; | |
685 | } | |
686 | ||
687 | static int append_srv(DnsQuery *q, sd_bus_message *reply, DnsResourceRecord *rr) { | |
688 | _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *canonical = NULL; | |
c77d2612 | 689 | _cleanup_free_ char *normalized = NULL; |
45ec7efb LP |
690 | DnsQuery *aux; |
691 | int r; | |
692 | ||
693 | assert(q); | |
694 | assert(reply); | |
695 | assert(rr); | |
696 | assert(rr->key); | |
697 | ||
698 | if (rr->key->type != DNS_TYPE_SRV) | |
699 | return 0; | |
700 | ||
701 | if ((q->flags & SD_RESOLVED_NO_ADDRESS) == 0) { | |
702 | /* First, let's see if we could find an appropriate A or AAAA | |
703 | * record for the SRV record */ | |
704 | LIST_FOREACH(auxiliary_queries, aux, q->auxiliary_queries) { | |
705 | DnsResourceRecord *zz; | |
23b298bc | 706 | DnsQuestion *question; |
45ec7efb LP |
707 | |
708 | if (aux->state != DNS_TRANSACTION_SUCCESS) | |
709 | continue; | |
710 | if (aux->auxiliary_result != 0) | |
711 | continue; | |
712 | ||
23b298bc LP |
713 | question = dns_query_question_for_protocol(aux, aux->answer_protocol); |
714 | ||
715 | r = dns_name_equal(dns_question_first_name(question), rr->srv.name); | |
45ec7efb LP |
716 | if (r < 0) |
717 | return r; | |
718 | if (r == 0) | |
719 | continue; | |
720 | ||
721 | DNS_ANSWER_FOREACH(zz, aux->answer) { | |
722 | ||
23b298bc | 723 | r = dns_question_matches_rr(question, zz, NULL); |
45ec7efb LP |
724 | if (r < 0) |
725 | return r; | |
726 | if (r == 0) | |
727 | continue; | |
728 | ||
729 | canonical = dns_resource_record_ref(zz); | |
730 | break; | |
731 | } | |
732 | ||
733 | if (canonical) | |
734 | break; | |
735 | } | |
736 | ||
737 | /* Is there are successful A/AAAA lookup for this SRV RR? If not, don't add it */ | |
738 | if (!canonical) | |
739 | return 0; | |
740 | } | |
741 | ||
742 | r = sd_bus_message_open_container(reply, 'r', "qqqsa(iiay)s"); | |
743 | if (r < 0) | |
744 | return r; | |
745 | ||
c77d2612 LP |
746 | r = dns_name_normalize(rr->srv.name, &normalized); |
747 | if (r < 0) | |
748 | return r; | |
749 | ||
45ec7efb LP |
750 | r = sd_bus_message_append( |
751 | reply, | |
752 | "qqqs", | |
c77d2612 | 753 | rr->srv.priority, rr->srv.weight, rr->srv.port, normalized); |
45ec7efb LP |
754 | if (r < 0) |
755 | return r; | |
756 | ||
757 | r = sd_bus_message_open_container(reply, 'a', "(iiay)"); | |
758 | if (r < 0) | |
759 | return r; | |
760 | ||
761 | if ((q->flags & SD_RESOLVED_NO_ADDRESS) == 0) { | |
762 | LIST_FOREACH(auxiliary_queries, aux, q->auxiliary_queries) { | |
763 | DnsResourceRecord *zz; | |
23b298bc | 764 | DnsQuestion *question; |
45ec7efb LP |
765 | int ifindex; |
766 | ||
767 | if (aux->state != DNS_TRANSACTION_SUCCESS) | |
768 | continue; | |
769 | if (aux->auxiliary_result != 0) | |
770 | continue; | |
771 | ||
23b298bc LP |
772 | question = dns_query_question_for_protocol(aux, aux->answer_protocol); |
773 | ||
774 | r = dns_name_equal(dns_question_first_name(question), rr->srv.name); | |
45ec7efb LP |
775 | if (r < 0) |
776 | return r; | |
777 | if (r == 0) | |
778 | continue; | |
779 | ||
780 | DNS_ANSWER_FOREACH_IFINDEX(zz, ifindex, aux->answer) { | |
781 | ||
23b298bc | 782 | r = dns_question_matches_rr(question, zz, NULL); |
45ec7efb LP |
783 | if (r < 0) |
784 | return r; | |
785 | if (r == 0) | |
786 | continue; | |
787 | ||
788 | r = append_address(reply, zz, ifindex); | |
789 | if (r < 0) | |
790 | return r; | |
791 | } | |
792 | } | |
793 | } | |
794 | ||
795 | r = sd_bus_message_close_container(reply); | |
796 | if (r < 0) | |
797 | return r; | |
798 | ||
c77d2612 LP |
799 | if (canonical) { |
800 | normalized = mfree(normalized); | |
801 | ||
1c02e7ba | 802 | r = dns_name_normalize(dns_resource_key_name(canonical->key), &normalized); |
c77d2612 LP |
803 | if (r < 0) |
804 | return r; | |
805 | } | |
806 | ||
45ec7efb LP |
807 | /* Note that above we appended the hostname as encoded in the |
808 | * SRV, and here the canonical hostname this maps to. */ | |
c77d2612 | 809 | r = sd_bus_message_append(reply, "s", normalized); |
45ec7efb LP |
810 | if (r < 0) |
811 | return r; | |
812 | ||
813 | r = sd_bus_message_close_container(reply); | |
814 | if (r < 0) | |
815 | return r; | |
816 | ||
817 | return 1; | |
818 | } | |
819 | ||
820 | static int append_txt(sd_bus_message *reply, DnsResourceRecord *rr) { | |
821 | DnsTxtItem *i; | |
822 | int r; | |
823 | ||
824 | assert(reply); | |
825 | assert(rr); | |
826 | assert(rr->key); | |
827 | ||
828 | if (rr->key->type != DNS_TYPE_TXT) | |
829 | return 0; | |
830 | ||
831 | LIST_FOREACH(items, i, rr->txt.items) { | |
832 | ||
833 | if (i->length <= 0) | |
834 | continue; | |
835 | ||
836 | r = sd_bus_message_append_array(reply, 'y', i->data, i->length); | |
837 | if (r < 0) | |
838 | return r; | |
839 | } | |
840 | ||
841 | return 1; | |
842 | } | |
843 | ||
844 | static void resolve_service_all_complete(DnsQuery *q) { | |
845 | _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *canonical = NULL; | |
846 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; | |
847 | _cleanup_free_ char *name = NULL, *type = NULL, *domain = NULL; | |
23b298bc LP |
848 | DnsQuestion *question; |
849 | DnsResourceRecord *rr; | |
850 | unsigned added = 0; | |
45ec7efb | 851 | DnsQuery *aux; |
45ec7efb LP |
852 | int r; |
853 | ||
854 | assert(q); | |
855 | ||
856 | if (q->block_all_complete > 0) | |
857 | return; | |
858 | ||
859 | if ((q->flags & SD_RESOLVED_NO_ADDRESS) == 0) { | |
860 | DnsQuery *bad = NULL; | |
861 | bool have_success = false; | |
862 | ||
863 | LIST_FOREACH(auxiliary_queries, aux, q->auxiliary_queries) { | |
864 | ||
865 | switch (aux->state) { | |
866 | ||
867 | case DNS_TRANSACTION_PENDING: | |
868 | /* If an auxiliary query is still pending, let's wait */ | |
869 | return; | |
870 | ||
871 | case DNS_TRANSACTION_SUCCESS: | |
872 | if (aux->auxiliary_result == 0) | |
873 | have_success = true; | |
874 | else | |
875 | bad = aux; | |
876 | break; | |
877 | ||
878 | default: | |
879 | bad = aux; | |
880 | break; | |
881 | } | |
882 | } | |
883 | ||
884 | if (!have_success) { | |
885 | /* We can only return one error, hence pick the last error we encountered */ | |
886 | ||
887 | assert(bad); | |
888 | ||
889 | if (bad->state == DNS_TRANSACTION_SUCCESS) { | |
890 | assert(bad->auxiliary_result != 0); | |
891 | ||
892 | if (bad->auxiliary_result == -ELOOP) { | |
23b298bc | 893 | r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_CNAME_LOOP, "CNAME loop detected, or CNAME resolving disabled on '%s'", dns_query_string(bad)); |
45ec7efb LP |
894 | goto finish; |
895 | } | |
896 | ||
897 | r = bad->auxiliary_result; | |
898 | goto finish; | |
899 | } | |
900 | ||
901 | r = reply_query_state(bad); | |
902 | goto finish; | |
903 | } | |
904 | } | |
905 | ||
906 | r = sd_bus_message_new_method_return(q->request, &reply); | |
907 | if (r < 0) | |
908 | goto finish; | |
909 | ||
910 | r = sd_bus_message_open_container(reply, 'a', "(qqqsa(iiay)s)"); | |
911 | if (r < 0) | |
912 | goto finish; | |
913 | ||
23b298bc LP |
914 | question = dns_query_question_for_protocol(q, q->answer_protocol); |
915 | DNS_ANSWER_FOREACH(rr, q->answer) { | |
916 | r = dns_question_matches_rr(question, rr, NULL); | |
917 | if (r < 0) | |
918 | goto finish; | |
919 | if (r == 0) | |
920 | continue; | |
45ec7efb | 921 | |
23b298bc LP |
922 | r = append_srv(q, reply, rr); |
923 | if (r < 0) | |
924 | goto finish; | |
925 | if (r == 0) /* not an SRV record */ | |
926 | continue; | |
45ec7efb | 927 | |
23b298bc LP |
928 | if (!canonical) |
929 | canonical = dns_resource_record_ref(rr); | |
45ec7efb | 930 | |
23b298bc | 931 | added++; |
45ec7efb LP |
932 | } |
933 | ||
934 | if (added <= 0) { | |
23b298bc | 935 | r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_SUCH_RR, "'%s' does not have any RR of the requested type", dns_query_string(q)); |
45ec7efb LP |
936 | goto finish; |
937 | } | |
938 | ||
939 | r = sd_bus_message_close_container(reply); | |
940 | if (r < 0) | |
941 | goto finish; | |
942 | ||
943 | r = sd_bus_message_open_container(reply, 'a', "ay"); | |
944 | if (r < 0) | |
945 | goto finish; | |
946 | ||
23b298bc LP |
947 | DNS_ANSWER_FOREACH(rr, q->answer) { |
948 | r = dns_question_matches_rr(question, rr, NULL); | |
949 | if (r < 0) | |
950 | goto finish; | |
951 | if (r == 0) | |
952 | continue; | |
45ec7efb | 953 | |
23b298bc LP |
954 | r = append_txt(reply, rr); |
955 | if (r < 0) | |
956 | goto finish; | |
45ec7efb LP |
957 | } |
958 | ||
959 | r = sd_bus_message_close_container(reply); | |
960 | if (r < 0) | |
961 | goto finish; | |
962 | ||
963 | assert(canonical); | |
1c02e7ba | 964 | r = dns_service_split(dns_resource_key_name(canonical->key), &name, &type, &domain); |
45ec7efb LP |
965 | if (r < 0) |
966 | goto finish; | |
967 | ||
968 | r = sd_bus_message_append( | |
969 | reply, | |
970 | "ssst", | |
971 | name, type, domain, | |
28830a64 | 972 | SD_RESOLVED_FLAGS_MAKE(q->answer_protocol, q->answer_family, dns_query_fully_authenticated(q))); |
45ec7efb LP |
973 | if (r < 0) |
974 | goto finish; | |
975 | ||
976 | r = sd_bus_send(q->manager->bus, reply, NULL); | |
977 | ||
978 | finish: | |
979 | if (r < 0) { | |
980 | log_error_errno(r, "Failed to send service reply: %m"); | |
981 | sd_bus_reply_method_errno(q->request, r, NULL); | |
982 | } | |
983 | ||
984 | dns_query_free(q); | |
985 | } | |
986 | ||
987 | static void resolve_service_hostname_complete(DnsQuery *q) { | |
988 | int r; | |
989 | ||
990 | assert(q); | |
991 | assert(q->auxiliary_for); | |
992 | ||
993 | if (q->state != DNS_TRANSACTION_SUCCESS) { | |
994 | resolve_service_all_complete(q->auxiliary_for); | |
995 | return; | |
996 | } | |
997 | ||
998 | r = dns_query_process_cname(q); | |
7588460a | 999 | if (r == DNS_QUERY_RESTARTED) /* This was a cname, and the query was restarted. */ |
45ec7efb LP |
1000 | return; |
1001 | ||
1002 | /* This auxiliary lookup is finished or failed, let's see if all are finished now. */ | |
1003 | q->auxiliary_result = r; | |
1004 | resolve_service_all_complete(q->auxiliary_for); | |
1005 | } | |
1006 | ||
1007 | static int resolve_service_hostname(DnsQuery *q, DnsResourceRecord *rr, int ifindex) { | |
1008 | _cleanup_(dns_question_unrefp) DnsQuestion *question = NULL; | |
1009 | DnsQuery *aux; | |
1010 | int r; | |
1011 | ||
1012 | assert(q); | |
1013 | assert(rr); | |
1014 | assert(rr->key); | |
1015 | assert(rr->key->type == DNS_TYPE_SRV); | |
1016 | ||
1017 | /* OK, we found an SRV record for the service. Let's resolve | |
1018 | * the hostname included in it */ | |
1019 | ||
23b298bc | 1020 | r = dns_question_new_address(&question, q->request_family, rr->srv.name, false); |
45ec7efb LP |
1021 | if (r < 0) |
1022 | return r; | |
1023 | ||
23b298bc | 1024 | r = dns_query_new(q->manager, &aux, question, question, ifindex, q->flags|SD_RESOLVED_NO_SEARCH); |
45ec7efb LP |
1025 | if (r < 0) |
1026 | return r; | |
1027 | ||
1028 | aux->request_family = q->request_family; | |
1029 | aux->complete = resolve_service_hostname_complete; | |
1030 | ||
1031 | r = dns_query_make_auxiliary(aux, q); | |
1032 | if (r == -EAGAIN) { | |
1033 | /* Too many auxiliary lookups? If so, don't complain, | |
1034 | * let's just not add this one, we already have more | |
1035 | * than enough */ | |
1036 | ||
1037 | dns_query_free(aux); | |
1038 | return 0; | |
1039 | } | |
1040 | if (r < 0) | |
1041 | goto fail; | |
1042 | ||
1043 | /* Note that auxiliary queries do not track the original bus | |
1044 | * client, only the primary request does that. */ | |
1045 | ||
1046 | r = dns_query_go(aux); | |
1047 | if (r < 0) | |
1048 | goto fail; | |
1049 | ||
1050 | return 1; | |
1051 | ||
1052 | fail: | |
1053 | dns_query_free(aux); | |
1054 | return r; | |
1055 | } | |
1056 | ||
1057 | static void bus_method_resolve_service_complete(DnsQuery *q) { | |
23b298bc LP |
1058 | bool has_root_domain = false; |
1059 | DnsResourceRecord *rr; | |
1060 | DnsQuestion *question; | |
45ec7efb | 1061 | unsigned found = 0; |
23b298bc | 1062 | int ifindex, r; |
45ec7efb LP |
1063 | |
1064 | assert(q); | |
1065 | ||
1066 | if (q->state != DNS_TRANSACTION_SUCCESS) { | |
1067 | r = reply_query_state(q); | |
1068 | goto finish; | |
1069 | } | |
1070 | ||
1071 | r = dns_query_process_cname(q); | |
1072 | if (r == -ELOOP) { | |
23b298bc | 1073 | r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_CNAME_LOOP, "CNAME loop detected, or CNAME resolving disabled on '%s'", dns_query_string(q)); |
45ec7efb LP |
1074 | goto finish; |
1075 | } | |
1076 | if (r < 0) | |
1077 | goto finish; | |
7588460a | 1078 | if (r == DNS_QUERY_RESTARTED) /* This was a cname, and the query was restarted. */ |
45ec7efb LP |
1079 | return; |
1080 | ||
23b298bc | 1081 | question = dns_query_question_for_protocol(q, q->answer_protocol); |
45ec7efb | 1082 | |
23b298bc LP |
1083 | DNS_ANSWER_FOREACH_IFINDEX(rr, ifindex, q->answer) { |
1084 | r = dns_question_matches_rr(question, rr, NULL); | |
1085 | if (r < 0) | |
1086 | goto finish; | |
1087 | if (r == 0) | |
1088 | continue; | |
45ec7efb | 1089 | |
23b298bc LP |
1090 | if (rr->key->type != DNS_TYPE_SRV) |
1091 | continue; | |
9a1f0c28 | 1092 | |
23b298bc LP |
1093 | if (dns_name_is_root(rr->srv.name)) { |
1094 | has_root_domain = true; | |
1095 | continue; | |
1096 | } | |
45ec7efb | 1097 | |
23b298bc | 1098 | if ((q->flags & SD_RESOLVED_NO_ADDRESS) == 0) { |
313cefa1 | 1099 | q->block_all_complete++; |
23b298bc | 1100 | r = resolve_service_hostname(q, rr, ifindex); |
313cefa1 | 1101 | q->block_all_complete--; |
45ec7efb | 1102 | |
23b298bc LP |
1103 | if (r < 0) |
1104 | goto finish; | |
45ec7efb | 1105 | } |
9a1f0c28 | 1106 | |
23b298bc LP |
1107 | found++; |
1108 | } | |
9a1f0c28 | 1109 | |
23b298bc LP |
1110 | if (has_root_domain && found <= 0) { |
1111 | /* If there's exactly one SRV RR and it uses | |
1112 | * the root domain as host name, then the | |
1113 | * service is explicitly not offered on the | |
1114 | * domain. Report this as a recognizable | |
1115 | * error. See RFC 2782, Section "Usage | |
1116 | * Rules". */ | |
1117 | r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_SUCH_SERVICE, "'%s' does not provide the requested service", dns_query_string(q)); | |
1118 | goto finish; | |
45ec7efb LP |
1119 | } |
1120 | ||
1121 | if (found <= 0) { | |
23b298bc | 1122 | r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_SUCH_RR, "'%s' does not have any RR of the requested type", dns_query_string(q)); |
45ec7efb LP |
1123 | goto finish; |
1124 | } | |
1125 | ||
1126 | /* Maybe we are already finished? check now... */ | |
1127 | resolve_service_all_complete(q); | |
1128 | return; | |
1129 | ||
1130 | finish: | |
2d4c5cbc | 1131 | if (r < 0) { |
45ec7efb LP |
1132 | log_error_errno(r, "Failed to send service reply: %m"); |
1133 | sd_bus_reply_method_errno(q->request, r, NULL); | |
1134 | } | |
1135 | ||
1136 | dns_query_free(q); | |
1137 | } | |
1138 | ||
1139 | static int bus_method_resolve_service(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
23b298bc LP |
1140 | _cleanup_(dns_question_unrefp) DnsQuestion *question_idna = NULL, *question_utf8 = NULL; |
1141 | const char *name, *type, *domain; | |
45ec7efb LP |
1142 | Manager *m = userdata; |
1143 | int family, ifindex; | |
1144 | uint64_t flags; | |
1145 | DnsQuery *q; | |
1146 | int r; | |
1147 | ||
1148 | assert(message); | |
1149 | assert(m); | |
1150 | ||
1151 | assert_cc(sizeof(int) == sizeof(int32_t)); | |
1152 | ||
1153 | r = sd_bus_message_read(message, "isssit", &ifindex, &name, &type, &domain, &family, &flags); | |
1154 | if (r < 0) | |
2d4c5cbc | 1155 | return r; |
45ec7efb LP |
1156 | |
1157 | if (!IN_SET(family, AF_INET, AF_INET6, AF_UNSPEC)) | |
1158 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown address family %i", family); | |
1159 | ||
1160 | if (isempty(name)) | |
1161 | name = NULL; | |
23b298bc LP |
1162 | else if (!dns_service_name_is_valid(name)) |
1163 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid service name '%s'", name); | |
2d4c5cbc | 1164 | |
45ec7efb LP |
1165 | if (isempty(type)) |
1166 | type = NULL; | |
7e8131e9 LP |
1167 | else if (!dns_srv_type_is_valid(type)) |
1168 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid SRV service type '%s'", type); | |
45ec7efb LP |
1169 | |
1170 | r = dns_name_is_valid(domain); | |
1171 | if (r < 0) | |
1172 | return r; | |
1173 | if (r == 0) | |
1174 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid domain '%s'", domain); | |
1175 | ||
1176 | if (name && !type) | |
1177 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Service name cannot be specified without service type."); | |
1178 | ||
1179 | r = check_ifindex_flags(ifindex, &flags, SD_RESOLVED_NO_TXT|SD_RESOLVED_NO_ADDRESS, error); | |
1180 | if (r < 0) | |
1181 | return r; | |
1182 | ||
23b298bc LP |
1183 | r = dns_question_new_service(&question_utf8, name, type, domain, !(flags & SD_RESOLVED_NO_TXT), false); |
1184 | if (r < 0) | |
1185 | return r; | |
45ec7efb | 1186 | |
23b298bc | 1187 | r = dns_question_new_service(&question_idna, name, type, domain, !(flags & SD_RESOLVED_NO_TXT), true); |
45ec7efb LP |
1188 | if (r < 0) |
1189 | return r; | |
1190 | ||
23b298bc | 1191 | r = dns_query_new(m, &q, question_utf8, question_idna, ifindex, flags|SD_RESOLVED_NO_SEARCH); |
45ec7efb LP |
1192 | if (r < 0) |
1193 | return r; | |
1194 | ||
1195 | q->request = sd_bus_message_ref(message); | |
1196 | q->request_family = family; | |
1197 | q->complete = bus_method_resolve_service_complete; | |
1198 | ||
1199 | r = dns_query_bus_track(q, message); | |
1200 | if (r < 0) | |
1201 | goto fail; | |
1202 | ||
1203 | r = dns_query_go(q); | |
1204 | if (r < 0) | |
1205 | goto fail; | |
1206 | ||
2d4c5cbc | 1207 | return 1; |
45ec7efb LP |
1208 | |
1209 | fail: | |
1210 | dns_query_free(q); | |
1211 | return r; | |
2d4c5cbc LP |
1212 | } |
1213 | ||
3abaabda | 1214 | int bus_dns_server_append(sd_bus_message *reply, DnsServer *s, bool with_ifindex) { |
7f220d94 LP |
1215 | int r; |
1216 | ||
1217 | assert(reply); | |
b7ac92cd YW |
1218 | |
1219 | if (!s) { | |
1220 | if (with_ifindex) | |
1221 | return sd_bus_message_append(reply, "(iiay)", 0, AF_UNSPEC, 0); | |
1222 | else | |
1223 | return sd_bus_message_append(reply, "(iay)", AF_UNSPEC, 0); | |
1224 | } | |
7f220d94 | 1225 | |
3abaabda | 1226 | r = sd_bus_message_open_container(reply, 'r', with_ifindex ? "iiay" : "iay"); |
7f220d94 LP |
1227 | if (r < 0) |
1228 | return r; | |
1229 | ||
3abaabda | 1230 | if (with_ifindex) { |
2817157b | 1231 | r = sd_bus_message_append(reply, "i", dns_server_ifindex(s)); |
3abaabda LP |
1232 | if (r < 0) |
1233 | return r; | |
1234 | } | |
1235 | ||
1236 | r = sd_bus_message_append(reply, "i", s->family); | |
7f220d94 LP |
1237 | if (r < 0) |
1238 | return r; | |
1239 | ||
1240 | r = sd_bus_message_append_array(reply, 'y', &s->address, FAMILY_ADDRESS_SIZE(s->family)); | |
1241 | if (r < 0) | |
1242 | return r; | |
1243 | ||
1244 | return sd_bus_message_close_container(reply); | |
1245 | } | |
1246 | ||
1247 | static int bus_property_get_dns_servers( | |
1248 | sd_bus *bus, | |
1249 | const char *path, | |
1250 | const char *interface, | |
1251 | const char *property, | |
1252 | sd_bus_message *reply, | |
1253 | void *userdata, | |
1254 | sd_bus_error *error) { | |
1255 | ||
1256 | Manager *m = userdata; | |
7f220d94 LP |
1257 | DnsServer *s; |
1258 | Iterator i; | |
1259 | Link *l; | |
1260 | int r; | |
1261 | ||
1262 | assert(reply); | |
1263 | assert(m); | |
1264 | ||
1265 | r = sd_bus_message_open_container(reply, 'a', "(iiay)"); | |
1266 | if (r < 0) | |
1267 | return r; | |
1268 | ||
1269 | LIST_FOREACH(servers, s, m->dns_servers) { | |
3abaabda | 1270 | r = bus_dns_server_append(reply, s, true); |
7f220d94 LP |
1271 | if (r < 0) |
1272 | return r; | |
7f220d94 LP |
1273 | } |
1274 | ||
1275 | HASHMAP_FOREACH(l, m->links, i) { | |
1276 | LIST_FOREACH(servers, s, l->dns_servers) { | |
3abaabda | 1277 | r = bus_dns_server_append(reply, s, true); |
7f220d94 LP |
1278 | if (r < 0) |
1279 | return r; | |
7f220d94 LP |
1280 | } |
1281 | } | |
1282 | ||
ad32ac53 YW |
1283 | return sd_bus_message_close_container(reply); |
1284 | } | |
1285 | ||
1286 | static int bus_property_get_fallback_dns_servers( | |
1287 | sd_bus *bus, | |
1288 | const char *path, | |
1289 | const char *interface, | |
1290 | const char *property, | |
1291 | sd_bus_message *reply, | |
1292 | void *userdata, | |
1293 | sd_bus_error *error) { | |
1294 | ||
1295 | DnsServer *s, **f = userdata; | |
1296 | int r; | |
1297 | ||
1298 | assert(reply); | |
1299 | assert(f); | |
1300 | ||
1301 | r = sd_bus_message_open_container(reply, 'a', "(iiay)"); | |
1302 | if (r < 0) | |
1303 | return r; | |
1304 | ||
1305 | LIST_FOREACH(servers, s, *f) { | |
1306 | r = bus_dns_server_append(reply, s, true); | |
1307 | if (r < 0) | |
1308 | return r; | |
7f220d94 LP |
1309 | } |
1310 | ||
1311 | return sd_bus_message_close_container(reply); | |
1312 | } | |
1313 | ||
b7ac92cd YW |
1314 | static int bus_property_get_current_dns_server( |
1315 | sd_bus *bus, | |
1316 | const char *path, | |
1317 | const char *interface, | |
1318 | const char *property, | |
1319 | sd_bus_message *reply, | |
1320 | void *userdata, | |
1321 | sd_bus_error *error) { | |
1322 | ||
1323 | DnsServer *s; | |
1324 | ||
1325 | assert(reply); | |
1326 | assert(userdata); | |
1327 | ||
1328 | s = *(DnsServer **) userdata; | |
1329 | ||
1330 | return bus_dns_server_append(reply, s, true); | |
1331 | } | |
1332 | ||
ee116b54 | 1333 | static int bus_property_get_domains( |
7f220d94 LP |
1334 | sd_bus *bus, |
1335 | const char *path, | |
1336 | const char *interface, | |
1337 | const char *property, | |
1338 | sd_bus_message *reply, | |
1339 | void *userdata, | |
1340 | sd_bus_error *error) { | |
1341 | ||
1342 | Manager *m = userdata; | |
1343 | DnsSearchDomain *d; | |
1344 | Iterator i; | |
1345 | Link *l; | |
1346 | int r; | |
1347 | ||
1348 | assert(reply); | |
1349 | assert(m); | |
1350 | ||
ad44b56b | 1351 | r = sd_bus_message_open_container(reply, 'a', "(isb)"); |
7f220d94 LP |
1352 | if (r < 0) |
1353 | return r; | |
1354 | ||
1355 | LIST_FOREACH(domains, d, m->search_domains) { | |
ad44b56b | 1356 | r = sd_bus_message_append(reply, "(isb)", 0, d->name, d->route_only); |
7f220d94 LP |
1357 | if (r < 0) |
1358 | return r; | |
1359 | } | |
1360 | ||
1361 | HASHMAP_FOREACH(l, m->links, i) { | |
1362 | LIST_FOREACH(domains, d, l->search_domains) { | |
ad44b56b | 1363 | r = sd_bus_message_append(reply, "(isb)", l->ifindex, d->name, d->route_only); |
7f220d94 LP |
1364 | if (r < 0) |
1365 | return r; | |
1366 | } | |
1367 | } | |
1368 | ||
1369 | return sd_bus_message_close_container(reply); | |
1370 | } | |
1371 | ||
a150ff5e LP |
1372 | static int bus_property_get_transaction_statistics( |
1373 | sd_bus *bus, | |
1374 | const char *path, | |
1375 | const char *interface, | |
1376 | const char *property, | |
1377 | sd_bus_message *reply, | |
1378 | void *userdata, | |
1379 | sd_bus_error *error) { | |
1380 | ||
1381 | Manager *m = userdata; | |
1382 | ||
1383 | assert(reply); | |
1384 | assert(m); | |
1385 | ||
1386 | return sd_bus_message_append(reply, "(tt)", | |
1387 | (uint64_t) hashmap_size(m->dns_transactions), | |
1388 | (uint64_t) m->n_transactions_total); | |
1389 | } | |
1390 | ||
1391 | static int bus_property_get_cache_statistics( | |
1392 | sd_bus *bus, | |
1393 | const char *path, | |
1394 | const char *interface, | |
1395 | const char *property, | |
1396 | sd_bus_message *reply, | |
1397 | void *userdata, | |
1398 | sd_bus_error *error) { | |
1399 | ||
1400 | uint64_t size = 0, hit = 0, miss = 0; | |
1401 | Manager *m = userdata; | |
1402 | DnsScope *s; | |
1403 | ||
1404 | assert(reply); | |
1405 | assert(m); | |
1406 | ||
1407 | LIST_FOREACH(scopes, s, m->dns_scopes) { | |
1408 | size += dns_cache_size(&s->cache); | |
1409 | hit += s->cache.n_hit; | |
1410 | miss += s->cache.n_miss; | |
1411 | } | |
1412 | ||
1413 | return sd_bus_message_append(reply, "(ttt)", size, hit, miss); | |
1414 | } | |
1415 | ||
1416 | static int bus_property_get_dnssec_statistics( | |
1417 | sd_bus *bus, | |
1418 | const char *path, | |
1419 | const char *interface, | |
1420 | const char *property, | |
1421 | sd_bus_message *reply, | |
1422 | void *userdata, | |
1423 | sd_bus_error *error) { | |
1424 | ||
1425 | Manager *m = userdata; | |
1426 | ||
1427 | assert(reply); | |
1428 | assert(m); | |
1429 | ||
1430 | return sd_bus_message_append(reply, "(tttt)", | |
59c5b597 LP |
1431 | (uint64_t) m->n_dnssec_verdict[DNSSEC_SECURE], |
1432 | (uint64_t) m->n_dnssec_verdict[DNSSEC_INSECURE], | |
1433 | (uint64_t) m->n_dnssec_verdict[DNSSEC_BOGUS], | |
1434 | (uint64_t) m->n_dnssec_verdict[DNSSEC_INDETERMINATE]); | |
a150ff5e LP |
1435 | } |
1436 | ||
476798b1 LP |
1437 | static int bus_property_get_ntas( |
1438 | sd_bus *bus, | |
1439 | const char *path, | |
1440 | const char *interface, | |
1441 | const char *property, | |
1442 | sd_bus_message *reply, | |
1443 | void *userdata, | |
1444 | sd_bus_error *error) { | |
1445 | ||
1446 | Manager *m = userdata; | |
1447 | const char *domain; | |
1448 | Iterator i; | |
1449 | int r; | |
1450 | ||
1451 | assert(reply); | |
1452 | assert(m); | |
1453 | ||
1454 | r = sd_bus_message_open_container(reply, 'a', "s"); | |
1455 | if (r < 0) | |
1456 | return r; | |
1457 | ||
1458 | SET_FOREACH(domain, m->trust_anchor.negative_by_name, i) { | |
1459 | r = sd_bus_message_append(reply, "s", domain); | |
1460 | if (r < 0) | |
1461 | return r; | |
1462 | } | |
1463 | ||
1464 | return sd_bus_message_close_container(reply); | |
1465 | } | |
1466 | ||
7ed1565a | 1467 | static BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_dns_stub_listener_mode, dns_stub_listener_mode, DnsStubListenerMode); |
acd380c4 YW |
1468 | static BUS_DEFINE_PROPERTY_GET(bus_property_get_dnssec_supported, "b", Manager, manager_dnssec_supported); |
1469 | static BUS_DEFINE_PROPERTY_GET2(bus_property_get_dnssec_mode, "s", Manager, manager_get_dnssec_mode, dnssec_mode_to_string); | |
c9299be2 | 1470 | static BUS_DEFINE_PROPERTY_GET2(bus_property_get_dns_over_tls_mode, "s", Manager, manager_get_dns_over_tls_mode, dns_over_tls_mode_to_string); |
7ed1565a | 1471 | |
a150ff5e LP |
1472 | static int bus_method_reset_statistics(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
1473 | Manager *m = userdata; | |
1474 | DnsScope *s; | |
1475 | ||
1476 | assert(message); | |
1477 | assert(m); | |
1478 | ||
1479 | LIST_FOREACH(scopes, s, m->dns_scopes) | |
1480 | s->cache.n_hit = s->cache.n_miss = 0; | |
1481 | ||
1482 | m->n_transactions_total = 0; | |
59c5b597 | 1483 | zero(m->n_dnssec_verdict); |
a150ff5e LP |
1484 | |
1485 | return sd_bus_reply_method_return(message, NULL); | |
1486 | } | |
1487 | ||
3abaabda | 1488 | static int get_any_link(Manager *m, int ifindex, Link **ret, sd_bus_error *error) { |
97e5d693 LP |
1489 | Link *l; |
1490 | ||
1491 | assert(m); | |
3abaabda | 1492 | assert(ret); |
97e5d693 LP |
1493 | |
1494 | if (ifindex <= 0) | |
1495 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid interface index"); | |
1496 | ||
1497 | l = hashmap_get(m->links, INT_TO_PTR(ifindex)); | |
1498 | if (!l) | |
1499 | return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_LINK, "Link %i not known", ifindex); | |
3abaabda LP |
1500 | |
1501 | *ret = l; | |
1502 | return 0; | |
1503 | } | |
1504 | ||
d2ec6608 | 1505 | static int call_link_method(Manager *m, sd_bus_message *message, sd_bus_message_handler_t handler, sd_bus_error *error) { |
97e5d693 | 1506 | int ifindex, r; |
97e5d693 LP |
1507 | Link *l; |
1508 | ||
97e5d693 | 1509 | assert(m); |
97e5d693 | 1510 | assert(message); |
d2ec6608 | 1511 | assert(handler); |
97e5d693 | 1512 | |
d2ec6608 | 1513 | assert_cc(sizeof(int) == sizeof(int32_t)); |
97e5d693 LP |
1514 | r = sd_bus_message_read(message, "i", &ifindex); |
1515 | if (r < 0) | |
1516 | return r; | |
1517 | ||
04b764bf | 1518 | r = get_any_link(m, ifindex, &l, error); |
97e5d693 LP |
1519 | if (r < 0) |
1520 | return r; | |
1521 | ||
d2ec6608 LP |
1522 | return handler(message, l, error); |
1523 | } | |
97e5d693 | 1524 | |
d2ec6608 LP |
1525 | static int bus_method_set_link_dns_servers(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
1526 | return call_link_method(userdata, message, bus_link_method_set_dns_servers, error); | |
1527 | } | |
97e5d693 | 1528 | |
ee116b54 LP |
1529 | static int bus_method_set_link_domains(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
1530 | return call_link_method(userdata, message, bus_link_method_set_domains, error); | |
97e5d693 LP |
1531 | } |
1532 | ||
1533 | static int bus_method_set_link_llmnr(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
d2ec6608 | 1534 | return call_link_method(userdata, message, bus_link_method_set_llmnr, error); |
97e5d693 LP |
1535 | } |
1536 | ||
1537 | static int bus_method_set_link_mdns(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
d2ec6608 | 1538 | return call_link_method(userdata, message, bus_link_method_set_mdns, error); |
97e5d693 LP |
1539 | } |
1540 | ||
c9299be2 IT |
1541 | static int bus_method_set_link_dns_over_tls(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
1542 | return call_link_method(userdata, message, bus_link_method_set_dns_over_tls, error); | |
b761a107 YW |
1543 | } |
1544 | ||
97e5d693 | 1545 | static int bus_method_set_link_dnssec(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
d2ec6608 | 1546 | return call_link_method(userdata, message, bus_link_method_set_dnssec, error); |
97e5d693 LP |
1547 | } |
1548 | ||
1549 | static int bus_method_set_link_dnssec_negative_trust_anchors(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
d2ec6608 | 1550 | return call_link_method(userdata, message, bus_link_method_set_dnssec_negative_trust_anchors, error); |
97e5d693 LP |
1551 | } |
1552 | ||
1553 | static int bus_method_revert_link(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
d2ec6608 | 1554 | return call_link_method(userdata, message, bus_link_method_revert, error); |
97e5d693 LP |
1555 | } |
1556 | ||
3abaabda LP |
1557 | static int bus_method_get_link(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
1558 | _cleanup_free_ char *p = NULL; | |
1559 | Manager *m = userdata; | |
1560 | int r, ifindex; | |
1561 | Link *l; | |
1562 | ||
1563 | assert(message); | |
1564 | assert(m); | |
1565 | ||
1566 | assert_cc(sizeof(int) == sizeof(int32_t)); | |
3abaabda LP |
1567 | r = sd_bus_message_read(message, "i", &ifindex); |
1568 | if (r < 0) | |
1569 | return r; | |
1570 | ||
1571 | r = get_any_link(m, ifindex, &l, error); | |
1572 | if (r < 0) | |
1573 | return r; | |
1574 | ||
1575 | p = link_bus_path(l); | |
1576 | if (!p) | |
1577 | return -ENOMEM; | |
1578 | ||
1579 | return sd_bus_reply_method_return(message, "o", p); | |
1580 | } | |
1581 | ||
ba35662f LP |
1582 | static int bus_method_flush_caches(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
1583 | Manager *m = userdata; | |
1584 | ||
1585 | assert(message); | |
1586 | assert(m); | |
1587 | ||
1588 | manager_flush_caches(m); | |
1589 | ||
1590 | return sd_bus_reply_method_return(message, NULL); | |
1591 | } | |
1592 | ||
d55b0463 LP |
1593 | static int bus_method_reset_server_features(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
1594 | Manager *m = userdata; | |
1595 | ||
1596 | assert(message); | |
1597 | assert(m); | |
1598 | ||
1599 | manager_reset_server_features(m); | |
1600 | ||
1601 | return sd_bus_reply_method_return(message, NULL); | |
1602 | } | |
1603 | ||
c3036641 DR |
1604 | static int on_bus_track(sd_bus_track *t, void *userdata) { |
1605 | DnssdService *s = userdata; | |
1606 | ||
1607 | assert(t); | |
1608 | assert(s); | |
1609 | ||
1610 | log_debug("Client of active request vanished, destroying DNS-SD service."); | |
1611 | dnssd_service_free(s); | |
1612 | ||
1613 | return 0; | |
1614 | } | |
1615 | ||
1616 | static int bus_method_register_service(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
84b0f133 | 1617 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
c3036641 DR |
1618 | _cleanup_(dnssd_service_freep) DnssdService *service = NULL; |
1619 | _cleanup_(sd_bus_track_unrefp) sd_bus_track *bus_track = NULL; | |
1620 | _cleanup_free_ char *path = NULL; | |
1621 | _cleanup_free_ char *instance_name = NULL; | |
1622 | Manager *m = userdata; | |
1623 | DnssdService *s = NULL; | |
c3036641 DR |
1624 | const char *name; |
1625 | const char *name_template; | |
1626 | const char *type; | |
84b0f133 | 1627 | uid_t euid; |
c3036641 DR |
1628 | int r; |
1629 | ||
1630 | assert(message); | |
1631 | assert(m); | |
1632 | ||
1633 | if (m->mdns_support != RESOLVE_SUPPORT_YES) | |
1634 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Support for MulticastDNS is disabled"); | |
1635 | ||
84b0f133 DR |
1636 | r = bus_verify_polkit_async(message, CAP_SYS_ADMIN, |
1637 | "org.freedesktop.resolve1.register-service", | |
1638 | NULL, false, UID_INVALID, | |
1639 | &m->polkit_registry, error); | |
1640 | if (r < 0) | |
1641 | return r; | |
1642 | if (r == 0) | |
1643 | return 1; /* Polkit will call us back */ | |
1644 | ||
c3036641 DR |
1645 | service = new0(DnssdService, 1); |
1646 | if (!service) | |
1647 | return log_oom(); | |
1648 | ||
84b0f133 DR |
1649 | r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds); |
1650 | if (r < 0) | |
1651 | return r; | |
1652 | ||
1653 | r = sd_bus_creds_get_euid(creds, &euid); | |
1654 | if (r < 0) | |
1655 | return r; | |
1656 | service->originator = euid; | |
1657 | ||
c3036641 DR |
1658 | r = sd_bus_message_read(message, "sssqqq", &name, &name_template, &type, |
1659 | &service->port, &service->priority, | |
1660 | &service->weight); | |
1661 | if (r < 0) | |
1662 | return r; | |
1663 | ||
1664 | s = hashmap_get(m->dnssd_services, name); | |
1665 | if (s) | |
1666 | return sd_bus_error_setf(error, BUS_ERROR_DNSSD_SERVICE_EXISTS, "DNS-SD service '%s' exists already", name); | |
1667 | ||
1668 | if (!dnssd_srv_type_is_valid(type)) | |
1669 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "DNS-SD service type '%s' is invalid", type); | |
1670 | ||
1671 | service->name = strdup(name); | |
1672 | if (!service->name) | |
1673 | return log_oom(); | |
1674 | ||
1675 | service->name_template = strdup(name_template); | |
1676 | if (!service->name_template) | |
1677 | return log_oom(); | |
1678 | ||
1679 | service->type = strdup(type); | |
1680 | if (!service->type) | |
1681 | return log_oom(); | |
1682 | ||
1683 | r = dnssd_render_instance_name(service, &instance_name); | |
1684 | if (r < 0) | |
1685 | return r; | |
1686 | ||
400f54fb | 1687 | r = sd_bus_message_enter_container(message, SD_BUS_TYPE_ARRAY, "a{say}"); |
c3036641 | 1688 | if (r < 0) |
400f54fb | 1689 | return r; |
c3036641 | 1690 | |
400f54fb DR |
1691 | while ((r = sd_bus_message_enter_container(message, SD_BUS_TYPE_ARRAY, "{say}")) > 0) { |
1692 | _cleanup_(dnssd_txtdata_freep) DnssdTxtData *txt_data = NULL; | |
1693 | DnsTxtItem *last = NULL; | |
c3036641 | 1694 | |
400f54fb DR |
1695 | txt_data = new0(DnssdTxtData, 1); |
1696 | if (!txt_data) | |
1697 | return log_oom(); | |
1698 | ||
1699 | while ((r = sd_bus_message_enter_container(message, SD_BUS_TYPE_DICT_ENTRY, "say")) > 0) { | |
1700 | const char *key; | |
1701 | const void *value; | |
1702 | size_t size; | |
1703 | DnsTxtItem *i; | |
1704 | ||
1705 | r = sd_bus_message_read(message, "s", &key); | |
1706 | if (r < 0) | |
1707 | return r; | |
1708 | ||
1709 | if (isempty(key)) | |
1710 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Keys in DNS-SD TXT RRs can't be empty"); | |
c3036641 | 1711 | |
400f54fb DR |
1712 | if (!ascii_is_valid(key)) |
1713 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "TXT key '%s' contains non-ASCII symbols", key); | |
c3036641 | 1714 | |
400f54fb DR |
1715 | r = sd_bus_message_read_array(message, 'y', &value, &size); |
1716 | if (r < 0) | |
1717 | return r; | |
c3036641 | 1718 | |
400f54fb DR |
1719 | r = dnssd_txt_item_new_from_data(key, value, size, &i); |
1720 | if (r < 0) | |
1721 | return r; | |
1722 | ||
1723 | LIST_INSERT_AFTER(items, txt_data->txt, last, i); | |
1724 | last = i; | |
1725 | ||
1726 | r = sd_bus_message_exit_container(message); | |
1727 | if (r < 0) | |
1728 | return r; | |
1729 | ||
1730 | } | |
c3036641 | 1731 | if (r < 0) |
400f54fb | 1732 | return r; |
c3036641 | 1733 | |
400f54fb | 1734 | r = sd_bus_message_exit_container(message); |
c3036641 | 1735 | if (r < 0) |
400f54fb | 1736 | return r; |
c3036641 | 1737 | |
400f54fb DR |
1738 | if (txt_data->txt) { |
1739 | LIST_PREPEND(items, service->txt_data_items, txt_data); | |
1740 | txt_data = NULL; | |
1741 | } | |
c3036641 | 1742 | } |
400f54fb DR |
1743 | if (r < 0) |
1744 | return r; | |
c3036641 DR |
1745 | |
1746 | r = sd_bus_message_exit_container(message); | |
1747 | if (r < 0) | |
400f54fb DR |
1748 | return r; |
1749 | ||
1750 | if (!service->txt_data_items) { | |
1751 | _cleanup_(dnssd_txtdata_freep) DnssdTxtData *txt_data = NULL; | |
c3036641 | 1752 | |
400f54fb DR |
1753 | txt_data = new0(DnssdTxtData, 1); |
1754 | if (!txt_data) | |
1755 | return log_oom(); | |
1756 | ||
1757 | r = dns_txt_item_new_empty(&txt_data->txt); | |
c3036641 | 1758 | if (r < 0) |
400f54fb DR |
1759 | return r; |
1760 | ||
1761 | LIST_PREPEND(items, service->txt_data_items, txt_data); | |
1762 | txt_data = NULL; | |
c3036641 DR |
1763 | } |
1764 | ||
1765 | r = sd_bus_path_encode("/org/freedesktop/resolve1/dnssd", service->name, &path); | |
1766 | if (r < 0) | |
1767 | return r; | |
1768 | ||
1769 | r = hashmap_ensure_allocated(&m->dnssd_services, &string_hash_ops); | |
1770 | if (r < 0) | |
1771 | return r; | |
1772 | ||
1773 | r = hashmap_put(m->dnssd_services, service->name, service); | |
1774 | if (r < 0) | |
1775 | return r; | |
1776 | ||
1777 | r = sd_bus_track_new(sd_bus_message_get_bus(message), &bus_track, on_bus_track, service); | |
1778 | if (r < 0) | |
1779 | return r; | |
1780 | ||
1781 | r = sd_bus_track_add_sender(bus_track, message); | |
1782 | if (r < 0) | |
1783 | return r; | |
1784 | ||
1785 | service->manager = m; | |
1786 | ||
1787 | service = NULL; | |
1788 | ||
1789 | manager_refresh_rrs(m); | |
1790 | ||
1791 | return sd_bus_reply_method_return(message, "o", path); | |
1792 | } | |
1793 | ||
1794 | static int call_dnssd_method(Manager *m, sd_bus_message *message, sd_bus_message_handler_t handler, sd_bus_error *error) { | |
1795 | _cleanup_free_ char *name = NULL; | |
1796 | DnssdService *s = NULL; | |
1797 | const char *path; | |
1798 | int r; | |
1799 | ||
1800 | assert(m); | |
1801 | assert(message); | |
1802 | assert(handler); | |
1803 | ||
1804 | r = sd_bus_message_read(message, "o", &path); | |
1805 | if (r < 0) | |
1806 | return r; | |
1807 | ||
1808 | r = sd_bus_path_decode(path, "/org/freedesktop/resolve1/dnssd", &name); | |
1809 | if (r == 0) | |
1810 | return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DNSSD_SERVICE, "DNS-SD service with object path '%s' does not exist", path); | |
1811 | if (r < 0) | |
1812 | return r; | |
1813 | ||
1814 | s = hashmap_get(m->dnssd_services, name); | |
1815 | if (!s) | |
1816 | return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DNSSD_SERVICE, "DNS-SD service '%s' not known", name); | |
1817 | ||
1818 | return handler(message, s, error); | |
1819 | } | |
1820 | ||
1821 | static int bus_method_unregister_service(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
1822 | Manager *m = userdata; | |
1823 | ||
1824 | assert(message); | |
1825 | assert(m); | |
1826 | ||
1827 | return call_dnssd_method(m, message, bus_dnssd_method_unregister, error); | |
1828 | } | |
1829 | ||
74b2466e LP |
1830 | static const sd_bus_vtable resolve_vtable[] = { |
1831 | SD_BUS_VTABLE_START(0), | |
7f220d94 | 1832 | SD_BUS_PROPERTY("LLMNRHostname", "s", NULL, offsetof(Manager, llmnr_hostname), 0), |
bf4e5c4c YW |
1833 | SD_BUS_PROPERTY("LLMNR", "s", bus_property_get_resolve_support, offsetof(Manager, llmnr_support), 0), |
1834 | SD_BUS_PROPERTY("MulticastDNS", "s", bus_property_get_resolve_support, offsetof(Manager, mdns_support), 0), | |
c9299be2 | 1835 | SD_BUS_PROPERTY("DNSOverTLS", "s", bus_property_get_dns_over_tls_mode, 0, 0), |
e40f0647 | 1836 | SD_BUS_PROPERTY("DNS", "a(iiay)", bus_property_get_dns_servers, 0, 0), |
ad32ac53 | 1837 | SD_BUS_PROPERTY("FallbackDNS", "a(iiay)", bus_property_get_fallback_dns_servers, offsetof(Manager, fallback_dns_servers), SD_BUS_VTABLE_PROPERTY_CONST), |
b7ac92cd | 1838 | SD_BUS_PROPERTY("CurrentDNSServer", "(iiay)", bus_property_get_current_dns_server, offsetof(Manager, current_dns_server), 0), |
ee116b54 | 1839 | SD_BUS_PROPERTY("Domains", "a(isb)", bus_property_get_domains, 0, 0), |
a150ff5e LP |
1840 | SD_BUS_PROPERTY("TransactionStatistics", "(tt)", bus_property_get_transaction_statistics, 0, 0), |
1841 | SD_BUS_PROPERTY("CacheStatistics", "(ttt)", bus_property_get_cache_statistics, 0, 0), | |
bf4e5c4c | 1842 | SD_BUS_PROPERTY("DNSSEC", "s", bus_property_get_dnssec_mode, 0, 0), |
a150ff5e | 1843 | SD_BUS_PROPERTY("DNSSECStatistics", "(tttt)", bus_property_get_dnssec_statistics, 0, 0), |
593f665c | 1844 | SD_BUS_PROPERTY("DNSSECSupported", "b", bus_property_get_dnssec_supported, 0, 0), |
476798b1 | 1845 | SD_BUS_PROPERTY("DNSSECNegativeTrustAnchors", "as", bus_property_get_ntas, 0, 0), |
7ed1565a | 1846 | SD_BUS_PROPERTY("DNSStubListener", "s", bus_property_get_dns_stub_listener_mode, offsetof(Manager, dns_stub_listener_mode), 0), |
7f220d94 | 1847 | |
78c6a153 LP |
1848 | SD_BUS_METHOD("ResolveHostname", "isit", "a(iiay)st", bus_method_resolve_hostname, SD_BUS_VTABLE_UNPRIVILEGED), |
1849 | SD_BUS_METHOD("ResolveAddress", "iiayt", "a(is)t", bus_method_resolve_address, SD_BUS_VTABLE_UNPRIVILEGED), | |
1850 | SD_BUS_METHOD("ResolveRecord", "isqqt", "a(iqqay)t", bus_method_resolve_record, SD_BUS_VTABLE_UNPRIVILEGED), | |
45ec7efb | 1851 | SD_BUS_METHOD("ResolveService", "isssit", "a(qqqsa(iiay)s)aayssst", bus_method_resolve_service, SD_BUS_VTABLE_UNPRIVILEGED), |
a150ff5e | 1852 | SD_BUS_METHOD("ResetStatistics", NULL, NULL, bus_method_reset_statistics, 0), |
ba35662f | 1853 | SD_BUS_METHOD("FlushCaches", NULL, NULL, bus_method_flush_caches, 0), |
d55b0463 | 1854 | SD_BUS_METHOD("ResetServerFeatures", NULL, NULL, bus_method_reset_server_features, 0), |
3abaabda | 1855 | SD_BUS_METHOD("GetLink", "i", "o", bus_method_get_link, SD_BUS_VTABLE_UNPRIVILEGED), |
97e5d693 | 1856 | SD_BUS_METHOD("SetLinkDNS", "ia(iay)", NULL, bus_method_set_link_dns_servers, 0), |
ee116b54 | 1857 | SD_BUS_METHOD("SetLinkDomains", "ia(sb)", NULL, bus_method_set_link_domains, 0), |
97e5d693 LP |
1858 | SD_BUS_METHOD("SetLinkLLMNR", "is", NULL, bus_method_set_link_llmnr, 0), |
1859 | SD_BUS_METHOD("SetLinkMulticastDNS", "is", NULL, bus_method_set_link_mdns, 0), | |
c9299be2 | 1860 | SD_BUS_METHOD("SetLinkDNSOverTLS", "is", NULL, bus_method_set_link_dns_over_tls, 0), |
97e5d693 LP |
1861 | SD_BUS_METHOD("SetLinkDNSSEC", "is", NULL, bus_method_set_link_dnssec, 0), |
1862 | SD_BUS_METHOD("SetLinkDNSSECNegativeTrustAnchors", "ias", NULL, bus_method_set_link_dnssec_negative_trust_anchors, 0), | |
1863 | SD_BUS_METHOD("RevertLink", "i", NULL, bus_method_revert_link, 0), | |
1864 | ||
400f54fb | 1865 | SD_BUS_METHOD("RegisterService", "sssqqqaa{say}", "o", bus_method_register_service, SD_BUS_VTABLE_UNPRIVILEGED), |
84b0f133 | 1866 | SD_BUS_METHOD("UnregisterService", "o", NULL, bus_method_unregister_service, SD_BUS_VTABLE_UNPRIVILEGED), |
74b2466e LP |
1867 | SD_BUS_VTABLE_END, |
1868 | }; | |
1869 | ||
19070062 | 1870 | static int match_prepare_for_sleep(sd_bus_message *message, void *userdata, sd_bus_error *ret_error) { |
902bb5d8 LP |
1871 | Manager *m = userdata; |
1872 | int b, r; | |
1873 | ||
19070062 LP |
1874 | assert(message); |
1875 | assert(m); | |
902bb5d8 LP |
1876 | |
1877 | r = sd_bus_message_read(message, "b", &b); | |
1878 | if (r < 0) { | |
da927ba9 | 1879 | log_debug_errno(r, "Failed to parse PrepareForSleep signal: %m"); |
902bb5d8 LP |
1880 | return 0; |
1881 | } | |
1882 | ||
1883 | if (b) | |
1884 | return 0; | |
1885 | ||
1886 | log_debug("Coming back from suspend, verifying all RRs..."); | |
1887 | ||
1888 | manager_verify_all(m); | |
1889 | return 0; | |
1890 | } | |
1891 | ||
74b2466e LP |
1892 | int manager_connect_bus(Manager *m) { |
1893 | int r; | |
1894 | ||
1895 | assert(m); | |
1896 | ||
1897 | if (m->bus) | |
1898 | return 0; | |
1899 | ||
8c6afb77 | 1900 | r = bus_open_system_watch_bind_with_description(&m->bus, "bus-api-resolve"); |
d7afd945 LP |
1901 | if (r < 0) |
1902 | return log_error_errno(r, "Failed to connect to system bus: %m"); | |
74b2466e | 1903 | |
4d1cf1e2 | 1904 | r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/resolve1", "org.freedesktop.resolve1.Manager", resolve_vtable, m); |
f647962d MS |
1905 | if (r < 0) |
1906 | return log_error_errno(r, "Failed to register object: %m"); | |
74b2466e | 1907 | |
3abaabda LP |
1908 | r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/resolve1/link", "org.freedesktop.resolve1.Link", link_vtable, link_object_find, m); |
1909 | if (r < 0) | |
1910 | return log_error_errno(r, "Failed to register link objects: %m"); | |
1911 | ||
1912 | r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/resolve1/link", link_node_enumerator, m); | |
1913 | if (r < 0) | |
1914 | return log_error_errno(r, "Failed to register link enumerator: %m"); | |
1915 | ||
c3036641 DR |
1916 | r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/resolve1/dnssd", "org.freedesktop.resolve1.DnssdService", dnssd_vtable, dnssd_object_find, m); |
1917 | if (r < 0) | |
1918 | return log_error_errno(r, "Failed to register dnssd objects: %m"); | |
1919 | ||
1920 | r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/resolve1/dnssd", dnssd_node_enumerator, m); | |
1921 | if (r < 0) | |
1922 | return log_error_errno(r, "Failed to register dnssd enumerator: %m"); | |
1923 | ||
62fb7e80 | 1924 | r = sd_bus_request_name_async(m->bus, NULL, "org.freedesktop.resolve1", 0, NULL, NULL); |
f647962d | 1925 | if (r < 0) |
0c0b9306 | 1926 | return log_error_errno(r, "Failed to request name: %m"); |
74b2466e LP |
1927 | |
1928 | r = sd_bus_attach_event(m->bus, m->event, 0); | |
f647962d MS |
1929 | if (r < 0) |
1930 | return log_error_errno(r, "Failed to attach bus to event loop: %m"); | |
74b2466e | 1931 | |
75152a4d LP |
1932 | r = sd_bus_match_signal_async( |
1933 | m->bus, | |
4b0051b1 | 1934 | NULL, |
75152a4d LP |
1935 | "org.freedesktop.login1", |
1936 | "/org/freedesktop/login1", | |
1937 | "org.freedesktop.login1.Manager", | |
1938 | "PrepareForSleep", | |
1939 | match_prepare_for_sleep, | |
1940 | NULL, | |
1941 | m); | |
1942 | if (r < 0) | |
d7afd945 | 1943 | log_warning_errno(r, "Failed to request match for PrepareForSleep, ignoring: %m"); |
902bb5d8 | 1944 | |
74b2466e LP |
1945 | return 0; |
1946 | } |