]>
Commit | Line | Data |
---|---|---|
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" |
0a970718 | 7 | #include "memory-util.h" |
ef118d00 | 8 | #include "missing_capability.h" |
39d8db04 | 9 | #include "resolved-bus.h" |
51323288 | 10 | #include "resolved-def.h" |
c3be369f | 11 | #include "resolved-dns-synthesize.h" |
c3036641 | 12 | #include "resolved-dnssd-bus.h" |
0a970718 | 13 | #include "resolved-dnssd.h" |
3abaabda | 14 | #include "resolved-link-bus.h" |
84b0f133 | 15 | #include "user-util.h" |
c3036641 | 16 | #include "utf8.h" |
74b2466e | 17 | |
bf4e5c4c YW |
18 | BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_resolve_support, resolve_support, ResolveSupport); |
19 | ||
ad867662 | 20 | static int reply_query_state(DnsQuery *q) { |
ad867662 LP |
21 | |
22 | switch (q->state) { | |
74b2466e | 23 | |
ec2c5e43 | 24 | case DNS_TRANSACTION_NO_SERVERS: |
309e9d86 | 25 | return sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_NAME_SERVERS, "No appropriate name servers or networks for name found"); |
74b2466e | 26 | |
ec2c5e43 | 27 | case DNS_TRANSACTION_TIMEOUT: |
ad867662 | 28 | return sd_bus_reply_method_errorf(q->request, SD_BUS_ERROR_TIMEOUT, "Query timed out"); |
74b2466e | 29 | |
ec2c5e43 | 30 | case DNS_TRANSACTION_ATTEMPTS_MAX_REACHED: |
ad867662 LP |
31 | return sd_bus_reply_method_errorf(q->request, SD_BUS_ERROR_TIMEOUT, "All attempts to contact name servers or networks failed"); |
32 | ||
818f766b LP |
33 | case DNS_TRANSACTION_INVALID_REPLY: |
34 | return sd_bus_reply_method_errorf(q->request, BUS_ERROR_INVALID_REPLY, "Received invalid reply"); | |
35 | ||
7cc6ed7b LP |
36 | case DNS_TRANSACTION_ERRNO: |
37 | return sd_bus_reply_method_errnof(q->request, q->answer_errno, "Lookup failed due to system error: %m"); | |
ad867662 | 38 | |
818f766b LP |
39 | case DNS_TRANSACTION_ABORTED: |
40 | return sd_bus_reply_method_errorf(q->request, BUS_ERROR_ABORTED, "Query aborted"); | |
74b2466e | 41 | |
547973de | 42 | case DNS_TRANSACTION_DNSSEC_FAILED: |
a761c1ca | 43 | return sd_bus_reply_method_errorf(q->request, BUS_ERROR_DNSSEC_FAILED, "DNSSEC validation failed: %s", |
019036a4 | 44 | dnssec_result_to_string(q->answer_dnssec_result)); |
547973de | 45 | |
b2b796b8 LP |
46 | case DNS_TRANSACTION_NO_TRUST_ANCHOR: |
47 | return sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_TRUST_ANCHOR, "No suitable trust anchor known"); | |
48 | ||
91adc4db LP |
49 | case DNS_TRANSACTION_RR_TYPE_UNSUPPORTED: |
50 | return sd_bus_reply_method_errorf(q->request, BUS_ERROR_RR_TYPE_UNSUPPORTED, "Server does not support requested resource record type"); | |
51 | ||
edbcc1fd LP |
52 | case DNS_TRANSACTION_NETWORK_DOWN: |
53 | return sd_bus_reply_method_errorf(q->request, BUS_ERROR_NETWORK_DOWN, "Network is down"); | |
54 | ||
0791110f LP |
55 | case DNS_TRANSACTION_NOT_FOUND: |
56 | /* We return this as NXDOMAIN. This is only generated when a host doesn't implement LLMNR/TCP, and we | |
57 | * thus quickly know that we cannot resolve an in-addr.arpa or ip6.arpa address. */ | |
58 | return sd_bus_reply_method_errorf(q->request, _BUS_ERROR_DNS "NXDOMAIN", "'%s' not found", dns_query_string(q)); | |
59 | ||
3bbdc31d | 60 | case DNS_TRANSACTION_RCODE_FAILURE: { |
4afd3348 | 61 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
74b2466e | 62 | |
faa133f3 | 63 | if (q->answer_rcode == DNS_RCODE_NXDOMAIN) |
23b298bc | 64 | sd_bus_error_setf(&error, _BUS_ERROR_DNS "NXDOMAIN", "'%s' not found", dns_query_string(q)); |
74b2466e LP |
65 | else { |
66 | const char *rc, *n; | |
3347dd5e | 67 | char p[DECIMAL_STR_MAX(q->answer_rcode)]; |
74b2466e | 68 | |
faa133f3 | 69 | rc = dns_rcode_to_string(q->answer_rcode); |
74b2466e | 70 | if (!rc) { |
faa133f3 | 71 | sprintf(p, "%i", q->answer_rcode); |
74b2466e LP |
72 | rc = p; |
73 | } | |
74 | ||
63c372cb | 75 | n = strjoina(_BUS_ERROR_DNS, rc); |
23b298bc | 76 | sd_bus_error_setf(&error, n, "Could not resolve '%s', server or network returned error %s", dns_query_string(q), rc); |
74b2466e LP |
77 | } |
78 | ||
ad867662 | 79 | return sd_bus_reply_method_error(q->request, &error); |
74b2466e LP |
80 | } |
81 | ||
ec2c5e43 LP |
82 | case DNS_TRANSACTION_NULL: |
83 | case DNS_TRANSACTION_PENDING: | |
ef9fb66c | 84 | case DNS_TRANSACTION_VALIDATING: |
ec2c5e43 | 85 | case DNS_TRANSACTION_SUCCESS: |
8ba9fd9c | 86 | default: |
ad867662 LP |
87 | assert_not_reached("Impossible state"); |
88 | } | |
89 | } | |
74b2466e | 90 | |
78c6a153 | 91 | static int append_address(sd_bus_message *reply, DnsResourceRecord *rr, int ifindex) { |
8ba9fd9c LP |
92 | int r; |
93 | ||
94 | assert(reply); | |
95 | assert(rr); | |
96 | ||
78c6a153 LP |
97 | r = sd_bus_message_open_container(reply, 'r', "iiay"); |
98 | if (r < 0) | |
99 | return r; | |
100 | ||
101 | r = sd_bus_message_append(reply, "i", ifindex); | |
8ba9fd9c LP |
102 | if (r < 0) |
103 | return r; | |
104 | ||
faa133f3 | 105 | if (rr->key->type == DNS_TYPE_A) { |
0dd25fb9 | 106 | r = sd_bus_message_append(reply, "i", AF_INET); |
8ba9fd9c LP |
107 | if (r < 0) |
108 | return r; | |
109 | ||
110 | r = sd_bus_message_append_array(reply, 'y', &rr->a.in_addr, sizeof(struct in_addr)); | |
faa133f3 LP |
111 | |
112 | } else if (rr->key->type == DNS_TYPE_AAAA) { | |
0dd25fb9 | 113 | r = sd_bus_message_append(reply, "i", AF_INET6); |
8ba9fd9c LP |
114 | if (r < 0) |
115 | return r; | |
116 | ||
117 | r = sd_bus_message_append_array(reply, 'y', &rr->aaaa.in6_addr, sizeof(struct in6_addr)); | |
faa133f3 LP |
118 | } else |
119 | return -EAFNOSUPPORT; | |
120 | ||
8ba9fd9c LP |
121 | if (r < 0) |
122 | return r; | |
123 | ||
8ba9fd9c LP |
124 | r = sd_bus_message_close_container(reply); |
125 | if (r < 0) | |
126 | return r; | |
127 | ||
128 | return 0; | |
129 | } | |
130 | ||
ad867662 | 131 | static void bus_method_resolve_hostname_complete(DnsQuery *q) { |
45ec7efb | 132 | _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *canonical = NULL; |
4afd3348 | 133 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
c77d2612 | 134 | _cleanup_free_ char *normalized = NULL; |
ce736ace | 135 | DnsResourceRecord *rr; |
45ec7efb | 136 | unsigned added = 0; |
ce736ace | 137 | int ifindex, r; |
74b2466e | 138 | |
ad867662 | 139 | assert(q); |
74b2466e | 140 | |
ec2c5e43 | 141 | if (q->state != DNS_TRANSACTION_SUCCESS) { |
ad867662 LP |
142 | r = reply_query_state(q); |
143 | goto finish; | |
144 | } | |
74b2466e | 145 | |
45ec7efb LP |
146 | r = dns_query_process_cname(q); |
147 | if (r == -ELOOP) { | |
23b298bc | 148 | 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 |
149 | goto finish; |
150 | } | |
151 | if (r < 0) | |
152 | goto finish; | |
7588460a | 153 | if (r == DNS_QUERY_RESTARTED) /* This was a cname, and the query was restarted. */ |
45ec7efb LP |
154 | return; |
155 | ||
ad867662 LP |
156 | r = sd_bus_message_new_method_return(q->request, &reply); |
157 | if (r < 0) | |
158 | goto finish; | |
74b2466e | 159 | |
78c6a153 | 160 | r = sd_bus_message_open_container(reply, 'a', "(iiay)"); |
51323288 LP |
161 | if (r < 0) |
162 | goto finish; | |
8ba9fd9c | 163 | |
ce736ace LP |
164 | DNS_ANSWER_FOREACH_IFINDEX(rr, ifindex, q->answer) { |
165 | DnsQuestion *question; | |
23b298bc | 166 | |
ce736ace | 167 | question = dns_query_question_for_protocol(q, q->answer_protocol); |
23b298bc | 168 | |
ce736ace LP |
169 | r = dns_question_matches_rr(question, rr, DNS_SEARCH_DOMAIN_NAME(q->answer_search_domain)); |
170 | if (r < 0) | |
171 | goto finish; | |
172 | if (r == 0) | |
173 | continue; | |
74b2466e | 174 | |
ce736ace LP |
175 | r = append_address(reply, rr, ifindex); |
176 | if (r < 0) | |
177 | goto finish; | |
74b2466e | 178 | |
ce736ace LP |
179 | if (!canonical) |
180 | canonical = dns_resource_record_ref(rr); | |
309e9d86 | 181 | |
313cefa1 | 182 | added++; |
8ba9fd9c | 183 | } |
74b2466e | 184 | |
45ec7efb | 185 | if (added <= 0) { |
23b298bc | 186 | 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 | 187 | goto finish; |
74b2466e LP |
188 | } |
189 | ||
ad867662 LP |
190 | r = sd_bus_message_close_container(reply); |
191 | if (r < 0) | |
192 | goto finish; | |
193 | ||
c77d2612 LP |
194 | /* The key names are not necessarily normalized, make sure that they are when we return them to our bus |
195 | * clients. */ | |
7470cc4c | 196 | r = dns_name_normalize(dns_resource_key_name(canonical->key), 0, &normalized); |
c77d2612 LP |
197 | if (r < 0) |
198 | goto finish; | |
199 | ||
45ec7efb | 200 | /* Return the precise spelling and uppercasing and CNAME target reported by the server */ |
309e9d86 | 201 | assert(canonical); |
45ec7efb LP |
202 | r = sd_bus_message_append( |
203 | reply, "st", | |
c77d2612 | 204 | normalized, |
28830a64 | 205 | SD_RESOLVED_FLAGS_MAKE(q->answer_protocol, q->answer_family, dns_query_fully_authenticated(q))); |
309e9d86 LP |
206 | if (r < 0) |
207 | goto finish; | |
208 | ||
ad867662 | 209 | r = sd_bus_send(q->manager->bus, reply, NULL); |
ad867662 | 210 | |
74b2466e | 211 | finish: |
2d4c5cbc | 212 | if (r < 0) { |
da927ba9 | 213 | log_error_errno(r, "Failed to send hostname reply: %m"); |
45ec7efb | 214 | sd_bus_reply_method_errno(q->request, r, NULL); |
2d4c5cbc | 215 | } |
74b2466e LP |
216 | |
217 | dns_query_free(q); | |
218 | } | |
219 | ||
45ec7efb | 220 | static int check_ifindex_flags(int ifindex, uint64_t *flags, uint64_t ok, sd_bus_error *error) { |
51323288 LP |
221 | assert(flags); |
222 | ||
223 | if (ifindex < 0) | |
224 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid interface index"); | |
225 | ||
45ec7efb | 226 | if (*flags & ~(SD_RESOLVED_PROTOCOLS_ALL|SD_RESOLVED_NO_CNAME|ok)) |
51323288 LP |
227 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid flags parameter"); |
228 | ||
45ec7efb LP |
229 | if ((*flags & SD_RESOLVED_PROTOCOLS_ALL) == 0) /* If no protocol is enabled, enable all */ |
230 | *flags |= SD_RESOLVED_PROTOCOLS_ALL; | |
51323288 LP |
231 | |
232 | return 0; | |
233 | } | |
234 | ||
c3be369f LP |
235 | static int parse_as_address(sd_bus_message *m, int ifindex, const char *hostname, int family, uint64_t flags) { |
236 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; | |
237 | _cleanup_free_ char *canonical = NULL; | |
238 | union in_addr_union parsed; | |
94831eae | 239 | int r, ff, parsed_ifindex = 0; |
c3be369f LP |
240 | |
241 | /* Check if the hostname is actually already an IP address formatted as string. In that case just parse it, | |
242 | * let's not attempt to look it up. */ | |
243 | ||
94831eae | 244 | r = in_addr_ifindex_from_string_auto(hostname, &ff, &parsed, &parsed_ifindex); |
c3be369f LP |
245 | if (r < 0) /* not an address */ |
246 | return 0; | |
247 | ||
248 | if (family != AF_UNSPEC && ff != family) | |
249 | return sd_bus_reply_method_errorf(m, BUS_ERROR_NO_SUCH_RR, "The specified address is not of the requested family."); | |
94831eae LP |
250 | if (ifindex > 0 && parsed_ifindex > 0 && parsed_ifindex != ifindex) |
251 | return sd_bus_reply_method_errorf(m, BUS_ERROR_NO_SUCH_RR, "The specified address interface index does not match requested interface."); | |
252 | ||
253 | if (parsed_ifindex > 0) | |
254 | ifindex = parsed_ifindex; | |
c3be369f LP |
255 | |
256 | r = sd_bus_message_new_method_return(m, &reply); | |
257 | if (r < 0) | |
258 | return r; | |
259 | ||
260 | r = sd_bus_message_open_container(reply, 'a', "(iiay)"); | |
261 | if (r < 0) | |
262 | return r; | |
263 | ||
264 | r = sd_bus_message_open_container(reply, 'r', "iiay"); | |
265 | if (r < 0) | |
266 | return r; | |
267 | ||
268 | r = sd_bus_message_append(reply, "ii", ifindex, ff); | |
269 | if (r < 0) | |
270 | return r; | |
271 | ||
272 | r = sd_bus_message_append_array(reply, 'y', &parsed, FAMILY_ADDRESS_SIZE(ff)); | |
273 | if (r < 0) | |
274 | return r; | |
275 | ||
276 | r = sd_bus_message_close_container(reply); | |
277 | if (r < 0) | |
278 | return r; | |
279 | ||
280 | r = sd_bus_message_close_container(reply); | |
281 | if (r < 0) | |
282 | return r; | |
283 | ||
284 | /* When an IP address is specified we just return it as canonical name, in order to avoid a DNS | |
285 | * look-up. However, we reformat it to make sure it's in a truly canonical form (i.e. on IPv6 the inner | |
286 | * omissions are always done the same way). */ | |
94831eae | 287 | r = in_addr_ifindex_to_string(ff, &parsed, ifindex, &canonical); |
c3be369f LP |
288 | if (r < 0) |
289 | return r; | |
290 | ||
291 | r = sd_bus_message_append(reply, "st", canonical, | |
292 | SD_RESOLVED_FLAGS_MAKE(dns_synthesize_protocol(flags), ff, true)); | |
293 | if (r < 0) | |
294 | return r; | |
295 | ||
296 | return sd_bus_send(sd_bus_message_get_bus(m), reply, NULL); | |
297 | } | |
298 | ||
19070062 | 299 | static int bus_method_resolve_hostname(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
23b298bc | 300 | _cleanup_(dns_question_unrefp) DnsQuestion *question_idna = NULL, *question_utf8 = NULL; |
74b2466e LP |
301 | Manager *m = userdata; |
302 | const char *hostname; | |
51323288 LP |
303 | int family, ifindex; |
304 | uint64_t flags; | |
74b2466e | 305 | DnsQuery *q; |
74b2466e LP |
306 | int r; |
307 | ||
74b2466e LP |
308 | assert(message); |
309 | assert(m); | |
310 | ||
45ec7efb LP |
311 | assert_cc(sizeof(int) == sizeof(int32_t)); |
312 | ||
51323288 | 313 | r = sd_bus_message_read(message, "isit", &ifindex, &hostname, &family, &flags); |
74b2466e LP |
314 | if (r < 0) |
315 | return r; | |
316 | ||
317 | if (!IN_SET(family, AF_INET, AF_INET6, AF_UNSPEC)) | |
0dd25fb9 | 318 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown address family %i", family); |
74b2466e | 319 | |
c3be369f | 320 | r = check_ifindex_flags(ifindex, &flags, SD_RESOLVED_NO_SEARCH, error); |
7b9f7afc | 321 | if (r < 0) |
45ec7efb | 322 | return r; |
74b2466e | 323 | |
c3be369f LP |
324 | r = parse_as_address(message, ifindex, hostname, family, flags); |
325 | if (r != 0) | |
326 | return r; | |
327 | ||
328 | r = dns_name_is_valid(hostname); | |
51323288 LP |
329 | if (r < 0) |
330 | return r; | |
c3be369f LP |
331 | if (r == 0) |
332 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid hostname '%s'", hostname); | |
51323288 | 333 | |
23b298bc LP |
334 | r = dns_question_new_address(&question_utf8, family, hostname, false); |
335 | if (r < 0) | |
336 | return r; | |
337 | ||
338 | r = dns_question_new_address(&question_idna, family, hostname, true); | |
ad1f3fe6 | 339 | if (r < 0 && r != -EALREADY) |
45ec7efb | 340 | return r; |
74b2466e | 341 | |
ad1f3fe6 | 342 | r = dns_query_new(m, &q, question_utf8, question_idna ?: question_utf8, ifindex, flags); |
74b2466e LP |
343 | if (r < 0) |
344 | return r; | |
345 | ||
346 | q->request = sd_bus_message_ref(message); | |
347 | q->request_family = family; | |
74b2466e | 348 | q->complete = bus_method_resolve_hostname_complete; |
011696f7 | 349 | q->suppress_unroutable_family = family == AF_UNSPEC; |
74b2466e | 350 | |
966c66e3 | 351 | r = dns_query_bus_track(q, message); |
82bd6ddd | 352 | if (r < 0) |
45ec7efb | 353 | goto fail; |
82bd6ddd | 354 | |
322345fd | 355 | r = dns_query_go(q); |
45ec7efb LP |
356 | if (r < 0) |
357 | goto fail; | |
74b2466e LP |
358 | |
359 | return 1; | |
45ec7efb LP |
360 | |
361 | fail: | |
362 | dns_query_free(q); | |
363 | return r; | |
74b2466e LP |
364 | } |
365 | ||
366 | static void bus_method_resolve_address_complete(DnsQuery *q) { | |
4afd3348 | 367 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
23b298bc | 368 | DnsQuestion *question; |
45ec7efb LP |
369 | DnsResourceRecord *rr; |
370 | unsigned added = 0; | |
371 | int ifindex, r; | |
74b2466e LP |
372 | |
373 | assert(q); | |
374 | ||
ec2c5e43 | 375 | if (q->state != DNS_TRANSACTION_SUCCESS) { |
ad867662 LP |
376 | r = reply_query_state(q); |
377 | goto finish; | |
378 | } | |
74b2466e | 379 | |
95d46fca TG |
380 | r = dns_query_process_cname(q); |
381 | if (r == -ELOOP) { | |
23b298bc | 382 | 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 |
383 | goto finish; |
384 | } | |
385 | if (r < 0) | |
386 | goto finish; | |
7588460a | 387 | if (r == DNS_QUERY_RESTARTED) /* This was a cname, and the query was restarted. */ |
95d46fca | 388 | return; |
45ec7efb | 389 | |
ad867662 LP |
390 | r = sd_bus_message_new_method_return(q->request, &reply); |
391 | if (r < 0) | |
392 | goto finish; | |
74b2466e | 393 | |
78c6a153 | 394 | r = sd_bus_message_open_container(reply, 'a', "(is)"); |
ad867662 LP |
395 | if (r < 0) |
396 | goto finish; | |
74b2466e | 397 | |
23b298bc | 398 | question = dns_query_question_for_protocol(q, q->answer_protocol); |
74b2466e | 399 | |
23b298bc | 400 | DNS_ANSWER_FOREACH_IFINDEX(rr, ifindex, q->answer) { |
c77d2612 LP |
401 | _cleanup_free_ char *normalized = NULL; |
402 | ||
23b298bc LP |
403 | r = dns_question_matches_rr(question, rr, NULL); |
404 | if (r < 0) | |
405 | goto finish; | |
406 | if (r == 0) | |
407 | continue; | |
74b2466e | 408 | |
7470cc4c | 409 | r = dns_name_normalize(rr->ptr.name, 0, &normalized); |
c77d2612 LP |
410 | if (r < 0) |
411 | goto finish; | |
412 | ||
413 | r = sd_bus_message_append(reply, "(is)", ifindex, normalized); | |
23b298bc LP |
414 | if (r < 0) |
415 | goto finish; | |
416 | ||
313cefa1 | 417 | added++; |
ad867662 | 418 | } |
74b2466e | 419 | |
45ec7efb | 420 | if (added <= 0) { |
ad867662 | 421 | _cleanup_free_ char *ip = NULL; |
74b2466e | 422 | |
164d025d ZJS |
423 | (void) in_addr_to_string(q->request_family, &q->request_address, &ip); |
424 | r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_SUCH_RR, | |
425 | "Address '%s' does not have any RR of requested type", strnull(ip)); | |
ad867662 | 426 | goto finish; |
74b2466e LP |
427 | } |
428 | ||
ad867662 LP |
429 | r = sd_bus_message_close_container(reply); |
430 | if (r < 0) | |
431 | goto finish; | |
74b2466e | 432 | |
28830a64 | 433 | r = sd_bus_message_append(reply, "t", SD_RESOLVED_FLAGS_MAKE(q->answer_protocol, q->answer_family, dns_query_fully_authenticated(q))); |
51323288 LP |
434 | if (r < 0) |
435 | goto finish; | |
436 | ||
ad867662 | 437 | r = sd_bus_send(q->manager->bus, reply, NULL); |
74b2466e LP |
438 | |
439 | finish: | |
2d4c5cbc | 440 | if (r < 0) { |
da927ba9 | 441 | log_error_errno(r, "Failed to send address reply: %m"); |
45ec7efb | 442 | sd_bus_reply_method_errno(q->request, r, NULL); |
2d4c5cbc | 443 | } |
74b2466e LP |
444 | |
445 | dns_query_free(q); | |
446 | } | |
447 | ||
19070062 | 448 | static int bus_method_resolve_address(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
faa133f3 | 449 | _cleanup_(dns_question_unrefp) DnsQuestion *question = NULL; |
74b2466e | 450 | Manager *m = userdata; |
faa133f3 | 451 | int family, ifindex; |
51323288 | 452 | uint64_t flags; |
74b2466e | 453 | const void *d; |
74b2466e LP |
454 | DnsQuery *q; |
455 | size_t sz; | |
456 | int r; | |
457 | ||
74b2466e LP |
458 | assert(message); |
459 | assert(m); | |
460 | ||
45ec7efb LP |
461 | assert_cc(sizeof(int) == sizeof(int32_t)); |
462 | ||
51323288 | 463 | r = sd_bus_message_read(message, "ii", &ifindex, &family); |
74b2466e LP |
464 | if (r < 0) |
465 | return r; | |
466 | ||
467 | if (!IN_SET(family, AF_INET, AF_INET6)) | |
0dd25fb9 | 468 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown address family %i", family); |
74b2466e LP |
469 | |
470 | r = sd_bus_message_read_array(message, 'y', &d, &sz); | |
471 | if (r < 0) | |
472 | return r; | |
473 | ||
0dd25fb9 | 474 | if (sz != FAMILY_ADDRESS_SIZE(family)) |
74b2466e LP |
475 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid address size"); |
476 | ||
51323288 LP |
477 | r = sd_bus_message_read(message, "t", &flags); |
478 | if (r < 0) | |
479 | return r; | |
480 | ||
45ec7efb | 481 | r = check_ifindex_flags(ifindex, &flags, 0, error); |
faa133f3 LP |
482 | if (r < 0) |
483 | return r; | |
484 | ||
45ec7efb | 485 | r = dns_question_new_reverse(&question, family, d); |
74b2466e LP |
486 | if (r < 0) |
487 | return r; | |
488 | ||
23b298bc | 489 | r = dns_query_new(m, &q, question, question, ifindex, flags|SD_RESOLVED_NO_SEARCH); |
74b2466e LP |
490 | if (r < 0) |
491 | return r; | |
492 | ||
493 | q->request = sd_bus_message_ref(message); | |
494 | q->request_family = family; | |
495 | memcpy(&q->request_address, d, sz); | |
496 | q->complete = bus_method_resolve_address_complete; | |
497 | ||
966c66e3 | 498 | r = dns_query_bus_track(q, message); |
82bd6ddd | 499 | if (r < 0) |
45ec7efb | 500 | goto fail; |
82bd6ddd | 501 | |
322345fd | 502 | r = dns_query_go(q); |
45ec7efb LP |
503 | if (r < 0) |
504 | goto fail; | |
74b2466e LP |
505 | |
506 | return 1; | |
45ec7efb LP |
507 | |
508 | fail: | |
509 | dns_query_free(q); | |
510 | return r; | |
511 | } | |
512 | ||
513 | static int bus_message_append_rr(sd_bus_message *m, DnsResourceRecord *rr, int ifindex) { | |
45ec7efb LP |
514 | int r; |
515 | ||
516 | assert(m); | |
517 | assert(rr); | |
518 | ||
519 | r = sd_bus_message_open_container(m, 'r', "iqqay"); | |
520 | if (r < 0) | |
521 | return r; | |
522 | ||
523 | r = sd_bus_message_append(m, "iqq", | |
524 | ifindex, | |
525 | rr->key->class, | |
526 | rr->key->type); | |
527 | if (r < 0) | |
528 | return r; | |
529 | ||
4e2d538f | 530 | r = dns_resource_record_to_wire_format(rr, false); |
45ec7efb LP |
531 | if (r < 0) |
532 | return r; | |
533 | ||
4e2d538f | 534 | r = sd_bus_message_append_array(m, 'y', rr->wire_format, rr->wire_format_size); |
45ec7efb LP |
535 | if (r < 0) |
536 | return r; | |
537 | ||
538 | return sd_bus_message_close_container(m); | |
74b2466e LP |
539 | } |
540 | ||
2d4c5cbc | 541 | static void bus_method_resolve_record_complete(DnsQuery *q) { |
4afd3348 | 542 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
23b298bc LP |
543 | DnsResourceRecord *rr; |
544 | DnsQuestion *question; | |
45ec7efb | 545 | unsigned added = 0; |
23b298bc | 546 | int ifindex; |
2d4c5cbc LP |
547 | int r; |
548 | ||
549 | assert(q); | |
550 | ||
ec2c5e43 | 551 | if (q->state != DNS_TRANSACTION_SUCCESS) { |
2d4c5cbc LP |
552 | r = reply_query_state(q); |
553 | goto finish; | |
554 | } | |
555 | ||
45ec7efb LP |
556 | r = dns_query_process_cname(q); |
557 | if (r == -ELOOP) { | |
23b298bc | 558 | 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 |
559 | goto finish; |
560 | } | |
561 | if (r < 0) | |
562 | goto finish; | |
7588460a | 563 | if (r == DNS_QUERY_RESTARTED) /* This was a cname, and the query was restarted. */ |
45ec7efb LP |
564 | return; |
565 | ||
2d4c5cbc LP |
566 | r = sd_bus_message_new_method_return(q->request, &reply); |
567 | if (r < 0) | |
568 | goto finish; | |
569 | ||
78c6a153 | 570 | r = sd_bus_message_open_container(reply, 'a', "(iqqay)"); |
2d4c5cbc LP |
571 | if (r < 0) |
572 | goto finish; | |
573 | ||
23b298bc | 574 | question = dns_query_question_for_protocol(q, q->answer_protocol); |
2d4c5cbc | 575 | |
23b298bc LP |
576 | DNS_ANSWER_FOREACH_IFINDEX(rr, ifindex, q->answer) { |
577 | r = dns_question_matches_rr(question, rr, NULL); | |
578 | if (r < 0) | |
579 | goto finish; | |
580 | if (r == 0) | |
581 | continue; | |
2d4c5cbc | 582 | |
23b298bc LP |
583 | r = bus_message_append_rr(reply, rr, ifindex); |
584 | if (r < 0) | |
585 | goto finish; | |
2d4c5cbc | 586 | |
313cefa1 | 587 | added++; |
2d4c5cbc LP |
588 | } |
589 | ||
590 | if (added <= 0) { | |
23b298bc | 591 | 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 |
592 | goto finish; |
593 | } | |
594 | ||
595 | r = sd_bus_message_close_container(reply); | |
596 | if (r < 0) | |
597 | goto finish; | |
598 | ||
28830a64 | 599 | r = sd_bus_message_append(reply, "t", SD_RESOLVED_FLAGS_MAKE(q->answer_protocol, q->answer_family, dns_query_fully_authenticated(q))); |
51323288 LP |
600 | if (r < 0) |
601 | goto finish; | |
602 | ||
2d4c5cbc LP |
603 | r = sd_bus_send(q->manager->bus, reply, NULL); |
604 | ||
605 | finish: | |
606 | if (r < 0) { | |
da927ba9 | 607 | log_error_errno(r, "Failed to send record reply: %m"); |
45ec7efb | 608 | sd_bus_reply_method_errno(q->request, r, NULL); |
2d4c5cbc LP |
609 | } |
610 | ||
611 | dns_query_free(q); | |
612 | } | |
613 | ||
19070062 | 614 | static int bus_method_resolve_record(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
2d4c5cbc LP |
615 | _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL; |
616 | _cleanup_(dns_question_unrefp) DnsQuestion *question = NULL; | |
2d4c5cbc | 617 | Manager *m = userdata; |
2d4c5cbc LP |
618 | uint16_t class, type; |
619 | const char *name; | |
51323288 LP |
620 | int r, ifindex; |
621 | uint64_t flags; | |
622 | DnsQuery *q; | |
2d4c5cbc | 623 | |
2d4c5cbc LP |
624 | assert(message); |
625 | assert(m); | |
626 | ||
45ec7efb LP |
627 | assert_cc(sizeof(int) == sizeof(int32_t)); |
628 | ||
51323288 | 629 | r = sd_bus_message_read(message, "isqqt", &ifindex, &name, &class, &type, &flags); |
2d4c5cbc LP |
630 | if (r < 0) |
631 | return r; | |
632 | ||
45ec7efb | 633 | r = dns_name_is_valid(name); |
7b9f7afc | 634 | if (r < 0) |
45ec7efb LP |
635 | return r; |
636 | if (r == 0) | |
7b9f7afc LP |
637 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid name '%s'", name); |
638 | ||
c463eb78 | 639 | if (!dns_type_is_valid_query(type)) |
eee026a7 | 640 | 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 |
641 | if (dns_type_is_zone_transer(type)) |
642 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Zone transfers not permitted via this programming interface."); | |
d0129ddb | 643 | if (dns_type_is_obsolete(type)) |
eee026a7 | 644 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Specified DNS resource record type %" PRIu16 " is obsolete.", type); |
c463eb78 | 645 | |
45ec7efb | 646 | r = check_ifindex_flags(ifindex, &flags, 0, error); |
51323288 LP |
647 | if (r < 0) |
648 | return r; | |
649 | ||
2d4c5cbc LP |
650 | question = dns_question_new(1); |
651 | if (!question) | |
652 | return -ENOMEM; | |
653 | ||
654 | key = dns_resource_key_new(class, type, name); | |
655 | if (!key) | |
656 | return -ENOMEM; | |
657 | ||
658 | r = dns_question_add(question, key); | |
659 | if (r < 0) | |
660 | return r; | |
661 | ||
23b298bc | 662 | r = dns_query_new(m, &q, question, question, ifindex, flags|SD_RESOLVED_NO_SEARCH); |
2d4c5cbc LP |
663 | if (r < 0) |
664 | return r; | |
665 | ||
17c8de63 LP |
666 | /* Let's request that the TTL is fixed up for locally cached entries, after all we return it in the wire format |
667 | * blob */ | |
668 | q->clamp_ttl = true; | |
669 | ||
2d4c5cbc | 670 | q->request = sd_bus_message_ref(message); |
2d4c5cbc LP |
671 | q->complete = bus_method_resolve_record_complete; |
672 | ||
966c66e3 | 673 | r = dns_query_bus_track(q, message); |
82bd6ddd | 674 | if (r < 0) |
45ec7efb | 675 | goto fail; |
82bd6ddd | 676 | |
2d4c5cbc | 677 | r = dns_query_go(q); |
45ec7efb LP |
678 | if (r < 0) |
679 | goto fail; | |
680 | ||
681 | return 1; | |
682 | ||
683 | fail: | |
684 | dns_query_free(q); | |
685 | return r; | |
686 | } | |
687 | ||
688 | static int append_srv(DnsQuery *q, sd_bus_message *reply, DnsResourceRecord *rr) { | |
689 | _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *canonical = NULL; | |
c77d2612 | 690 | _cleanup_free_ char *normalized = NULL; |
45ec7efb LP |
691 | DnsQuery *aux; |
692 | int r; | |
693 | ||
694 | assert(q); | |
695 | assert(reply); | |
696 | assert(rr); | |
697 | assert(rr->key); | |
698 | ||
699 | if (rr->key->type != DNS_TYPE_SRV) | |
700 | return 0; | |
701 | ||
702 | if ((q->flags & SD_RESOLVED_NO_ADDRESS) == 0) { | |
703 | /* First, let's see if we could find an appropriate A or AAAA | |
704 | * record for the SRV record */ | |
705 | LIST_FOREACH(auxiliary_queries, aux, q->auxiliary_queries) { | |
706 | DnsResourceRecord *zz; | |
23b298bc | 707 | DnsQuestion *question; |
45ec7efb LP |
708 | |
709 | if (aux->state != DNS_TRANSACTION_SUCCESS) | |
710 | continue; | |
711 | if (aux->auxiliary_result != 0) | |
712 | continue; | |
713 | ||
23b298bc LP |
714 | question = dns_query_question_for_protocol(aux, aux->answer_protocol); |
715 | ||
716 | r = dns_name_equal(dns_question_first_name(question), rr->srv.name); | |
45ec7efb LP |
717 | if (r < 0) |
718 | return r; | |
719 | if (r == 0) | |
720 | continue; | |
721 | ||
722 | DNS_ANSWER_FOREACH(zz, aux->answer) { | |
723 | ||
23b298bc | 724 | r = dns_question_matches_rr(question, zz, NULL); |
45ec7efb LP |
725 | if (r < 0) |
726 | return r; | |
727 | if (r == 0) | |
728 | continue; | |
729 | ||
730 | canonical = dns_resource_record_ref(zz); | |
731 | break; | |
732 | } | |
733 | ||
734 | if (canonical) | |
735 | break; | |
736 | } | |
737 | ||
738 | /* Is there are successful A/AAAA lookup for this SRV RR? If not, don't add it */ | |
739 | if (!canonical) | |
740 | return 0; | |
741 | } | |
742 | ||
743 | r = sd_bus_message_open_container(reply, 'r', "qqqsa(iiay)s"); | |
744 | if (r < 0) | |
745 | return r; | |
746 | ||
7470cc4c | 747 | r = dns_name_normalize(rr->srv.name, 0, &normalized); |
c77d2612 LP |
748 | if (r < 0) |
749 | return r; | |
750 | ||
45ec7efb LP |
751 | r = sd_bus_message_append( |
752 | reply, | |
753 | "qqqs", | |
c77d2612 | 754 | rr->srv.priority, rr->srv.weight, rr->srv.port, normalized); |
45ec7efb LP |
755 | if (r < 0) |
756 | return r; | |
757 | ||
758 | r = sd_bus_message_open_container(reply, 'a', "(iiay)"); | |
759 | if (r < 0) | |
760 | return r; | |
761 | ||
762 | if ((q->flags & SD_RESOLVED_NO_ADDRESS) == 0) { | |
763 | LIST_FOREACH(auxiliary_queries, aux, q->auxiliary_queries) { | |
764 | DnsResourceRecord *zz; | |
23b298bc | 765 | DnsQuestion *question; |
45ec7efb LP |
766 | int ifindex; |
767 | ||
768 | if (aux->state != DNS_TRANSACTION_SUCCESS) | |
769 | continue; | |
770 | if (aux->auxiliary_result != 0) | |
771 | continue; | |
772 | ||
23b298bc LP |
773 | question = dns_query_question_for_protocol(aux, aux->answer_protocol); |
774 | ||
775 | r = dns_name_equal(dns_question_first_name(question), rr->srv.name); | |
45ec7efb LP |
776 | if (r < 0) |
777 | return r; | |
778 | if (r == 0) | |
779 | continue; | |
780 | ||
781 | DNS_ANSWER_FOREACH_IFINDEX(zz, ifindex, aux->answer) { | |
782 | ||
23b298bc | 783 | r = dns_question_matches_rr(question, zz, NULL); |
45ec7efb LP |
784 | if (r < 0) |
785 | return r; | |
786 | if (r == 0) | |
787 | continue; | |
788 | ||
789 | r = append_address(reply, zz, ifindex); | |
790 | if (r < 0) | |
791 | return r; | |
792 | } | |
793 | } | |
794 | } | |
795 | ||
796 | r = sd_bus_message_close_container(reply); | |
797 | if (r < 0) | |
798 | return r; | |
799 | ||
c77d2612 LP |
800 | if (canonical) { |
801 | normalized = mfree(normalized); | |
802 | ||
7470cc4c | 803 | r = dns_name_normalize(dns_resource_key_name(canonical->key), 0, &normalized); |
c77d2612 LP |
804 | if (r < 0) |
805 | return r; | |
806 | } | |
807 | ||
45ec7efb LP |
808 | /* Note that above we appended the hostname as encoded in the |
809 | * SRV, and here the canonical hostname this maps to. */ | |
c77d2612 | 810 | r = sd_bus_message_append(reply, "s", normalized); |
45ec7efb LP |
811 | if (r < 0) |
812 | return r; | |
813 | ||
814 | r = sd_bus_message_close_container(reply); | |
815 | if (r < 0) | |
816 | return r; | |
817 | ||
818 | return 1; | |
819 | } | |
820 | ||
821 | static int append_txt(sd_bus_message *reply, DnsResourceRecord *rr) { | |
822 | DnsTxtItem *i; | |
823 | int r; | |
824 | ||
825 | assert(reply); | |
826 | assert(rr); | |
827 | assert(rr->key); | |
828 | ||
829 | if (rr->key->type != DNS_TYPE_TXT) | |
830 | return 0; | |
831 | ||
832 | LIST_FOREACH(items, i, rr->txt.items) { | |
833 | ||
834 | if (i->length <= 0) | |
835 | continue; | |
836 | ||
837 | r = sd_bus_message_append_array(reply, 'y', i->data, i->length); | |
838 | if (r < 0) | |
839 | return r; | |
840 | } | |
841 | ||
842 | return 1; | |
843 | } | |
844 | ||
845 | static void resolve_service_all_complete(DnsQuery *q) { | |
846 | _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *canonical = NULL; | |
847 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; | |
848 | _cleanup_free_ char *name = NULL, *type = NULL, *domain = NULL; | |
23b298bc LP |
849 | DnsQuestion *question; |
850 | DnsResourceRecord *rr; | |
851 | unsigned added = 0; | |
45ec7efb | 852 | DnsQuery *aux; |
45ec7efb LP |
853 | int r; |
854 | ||
855 | assert(q); | |
856 | ||
857 | if (q->block_all_complete > 0) | |
858 | return; | |
859 | ||
860 | if ((q->flags & SD_RESOLVED_NO_ADDRESS) == 0) { | |
861 | DnsQuery *bad = NULL; | |
862 | bool have_success = false; | |
863 | ||
864 | LIST_FOREACH(auxiliary_queries, aux, q->auxiliary_queries) { | |
865 | ||
866 | switch (aux->state) { | |
867 | ||
868 | case DNS_TRANSACTION_PENDING: | |
869 | /* If an auxiliary query is still pending, let's wait */ | |
870 | return; | |
871 | ||
872 | case DNS_TRANSACTION_SUCCESS: | |
873 | if (aux->auxiliary_result == 0) | |
874 | have_success = true; | |
875 | else | |
876 | bad = aux; | |
877 | break; | |
878 | ||
879 | default: | |
880 | bad = aux; | |
881 | break; | |
882 | } | |
883 | } | |
884 | ||
885 | if (!have_success) { | |
886 | /* We can only return one error, hence pick the last error we encountered */ | |
887 | ||
888 | assert(bad); | |
889 | ||
890 | if (bad->state == DNS_TRANSACTION_SUCCESS) { | |
891 | assert(bad->auxiliary_result != 0); | |
892 | ||
893 | if (bad->auxiliary_result == -ELOOP) { | |
23b298bc | 894 | 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 |
895 | goto finish; |
896 | } | |
897 | ||
898 | r = bad->auxiliary_result; | |
899 | goto finish; | |
900 | } | |
901 | ||
902 | r = reply_query_state(bad); | |
903 | goto finish; | |
904 | } | |
905 | } | |
906 | ||
907 | r = sd_bus_message_new_method_return(q->request, &reply); | |
908 | if (r < 0) | |
909 | goto finish; | |
910 | ||
911 | r = sd_bus_message_open_container(reply, 'a', "(qqqsa(iiay)s)"); | |
912 | if (r < 0) | |
913 | goto finish; | |
914 | ||
23b298bc LP |
915 | question = dns_query_question_for_protocol(q, q->answer_protocol); |
916 | DNS_ANSWER_FOREACH(rr, q->answer) { | |
917 | r = dns_question_matches_rr(question, rr, NULL); | |
918 | if (r < 0) | |
919 | goto finish; | |
920 | if (r == 0) | |
921 | continue; | |
45ec7efb | 922 | |
23b298bc LP |
923 | r = append_srv(q, reply, rr); |
924 | if (r < 0) | |
925 | goto finish; | |
926 | if (r == 0) /* not an SRV record */ | |
927 | continue; | |
45ec7efb | 928 | |
23b298bc LP |
929 | if (!canonical) |
930 | canonical = dns_resource_record_ref(rr); | |
45ec7efb | 931 | |
23b298bc | 932 | added++; |
45ec7efb LP |
933 | } |
934 | ||
935 | if (added <= 0) { | |
23b298bc | 936 | 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 |
937 | goto finish; |
938 | } | |
939 | ||
940 | r = sd_bus_message_close_container(reply); | |
941 | if (r < 0) | |
942 | goto finish; | |
943 | ||
944 | r = sd_bus_message_open_container(reply, 'a', "ay"); | |
945 | if (r < 0) | |
946 | goto finish; | |
947 | ||
23b298bc LP |
948 | DNS_ANSWER_FOREACH(rr, q->answer) { |
949 | r = dns_question_matches_rr(question, rr, NULL); | |
950 | if (r < 0) | |
951 | goto finish; | |
952 | if (r == 0) | |
953 | continue; | |
45ec7efb | 954 | |
23b298bc LP |
955 | r = append_txt(reply, rr); |
956 | if (r < 0) | |
957 | goto finish; | |
45ec7efb LP |
958 | } |
959 | ||
960 | r = sd_bus_message_close_container(reply); | |
961 | if (r < 0) | |
962 | goto finish; | |
963 | ||
964 | assert(canonical); | |
1c02e7ba | 965 | r = dns_service_split(dns_resource_key_name(canonical->key), &name, &type, &domain); |
45ec7efb LP |
966 | if (r < 0) |
967 | goto finish; | |
968 | ||
969 | r = sd_bus_message_append( | |
970 | reply, | |
971 | "ssst", | |
972 | name, type, domain, | |
28830a64 | 973 | SD_RESOLVED_FLAGS_MAKE(q->answer_protocol, q->answer_family, dns_query_fully_authenticated(q))); |
45ec7efb LP |
974 | if (r < 0) |
975 | goto finish; | |
976 | ||
977 | r = sd_bus_send(q->manager->bus, reply, NULL); | |
978 | ||
979 | finish: | |
980 | if (r < 0) { | |
981 | log_error_errno(r, "Failed to send service reply: %m"); | |
982 | sd_bus_reply_method_errno(q->request, r, NULL); | |
983 | } | |
984 | ||
985 | dns_query_free(q); | |
986 | } | |
987 | ||
988 | static void resolve_service_hostname_complete(DnsQuery *q) { | |
989 | int r; | |
990 | ||
991 | assert(q); | |
992 | assert(q->auxiliary_for); | |
993 | ||
994 | if (q->state != DNS_TRANSACTION_SUCCESS) { | |
995 | resolve_service_all_complete(q->auxiliary_for); | |
996 | return; | |
997 | } | |
998 | ||
999 | r = dns_query_process_cname(q); | |
7588460a | 1000 | if (r == DNS_QUERY_RESTARTED) /* This was a cname, and the query was restarted. */ |
45ec7efb LP |
1001 | return; |
1002 | ||
1003 | /* This auxiliary lookup is finished or failed, let's see if all are finished now. */ | |
1004 | q->auxiliary_result = r; | |
1005 | resolve_service_all_complete(q->auxiliary_for); | |
1006 | } | |
1007 | ||
1008 | static int resolve_service_hostname(DnsQuery *q, DnsResourceRecord *rr, int ifindex) { | |
1009 | _cleanup_(dns_question_unrefp) DnsQuestion *question = NULL; | |
1010 | DnsQuery *aux; | |
1011 | int r; | |
1012 | ||
1013 | assert(q); | |
1014 | assert(rr); | |
1015 | assert(rr->key); | |
1016 | assert(rr->key->type == DNS_TYPE_SRV); | |
1017 | ||
1018 | /* OK, we found an SRV record for the service. Let's resolve | |
1019 | * the hostname included in it */ | |
1020 | ||
23b298bc | 1021 | r = dns_question_new_address(&question, q->request_family, rr->srv.name, false); |
45ec7efb LP |
1022 | if (r < 0) |
1023 | return r; | |
1024 | ||
23b298bc | 1025 | r = dns_query_new(q->manager, &aux, question, question, ifindex, q->flags|SD_RESOLVED_NO_SEARCH); |
45ec7efb LP |
1026 | if (r < 0) |
1027 | return r; | |
1028 | ||
1029 | aux->request_family = q->request_family; | |
1030 | aux->complete = resolve_service_hostname_complete; | |
1031 | ||
1032 | r = dns_query_make_auxiliary(aux, q); | |
1033 | if (r == -EAGAIN) { | |
1034 | /* Too many auxiliary lookups? If so, don't complain, | |
1035 | * let's just not add this one, we already have more | |
1036 | * than enough */ | |
1037 | ||
1038 | dns_query_free(aux); | |
1039 | return 0; | |
1040 | } | |
1041 | if (r < 0) | |
1042 | goto fail; | |
1043 | ||
1044 | /* Note that auxiliary queries do not track the original bus | |
1045 | * client, only the primary request does that. */ | |
1046 | ||
1047 | r = dns_query_go(aux); | |
1048 | if (r < 0) | |
1049 | goto fail; | |
1050 | ||
1051 | return 1; | |
1052 | ||
1053 | fail: | |
1054 | dns_query_free(aux); | |
1055 | return r; | |
1056 | } | |
1057 | ||
1058 | static void bus_method_resolve_service_complete(DnsQuery *q) { | |
23b298bc LP |
1059 | bool has_root_domain = false; |
1060 | DnsResourceRecord *rr; | |
1061 | DnsQuestion *question; | |
45ec7efb | 1062 | unsigned found = 0; |
23b298bc | 1063 | int ifindex, r; |
45ec7efb LP |
1064 | |
1065 | assert(q); | |
1066 | ||
1067 | if (q->state != DNS_TRANSACTION_SUCCESS) { | |
1068 | r = reply_query_state(q); | |
1069 | goto finish; | |
1070 | } | |
1071 | ||
1072 | r = dns_query_process_cname(q); | |
1073 | if (r == -ELOOP) { | |
23b298bc | 1074 | 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 |
1075 | goto finish; |
1076 | } | |
1077 | if (r < 0) | |
1078 | goto finish; | |
7588460a | 1079 | if (r == DNS_QUERY_RESTARTED) /* This was a cname, and the query was restarted. */ |
45ec7efb LP |
1080 | return; |
1081 | ||
23b298bc | 1082 | question = dns_query_question_for_protocol(q, q->answer_protocol); |
45ec7efb | 1083 | |
23b298bc LP |
1084 | DNS_ANSWER_FOREACH_IFINDEX(rr, ifindex, q->answer) { |
1085 | r = dns_question_matches_rr(question, rr, NULL); | |
1086 | if (r < 0) | |
1087 | goto finish; | |
1088 | if (r == 0) | |
1089 | continue; | |
45ec7efb | 1090 | |
23b298bc LP |
1091 | if (rr->key->type != DNS_TYPE_SRV) |
1092 | continue; | |
9a1f0c28 | 1093 | |
23b298bc LP |
1094 | if (dns_name_is_root(rr->srv.name)) { |
1095 | has_root_domain = true; | |
1096 | continue; | |
1097 | } | |
45ec7efb | 1098 | |
23b298bc | 1099 | if ((q->flags & SD_RESOLVED_NO_ADDRESS) == 0) { |
313cefa1 | 1100 | q->block_all_complete++; |
23b298bc | 1101 | r = resolve_service_hostname(q, rr, ifindex); |
313cefa1 | 1102 | q->block_all_complete--; |
45ec7efb | 1103 | |
23b298bc LP |
1104 | if (r < 0) |
1105 | goto finish; | |
45ec7efb | 1106 | } |
9a1f0c28 | 1107 | |
23b298bc LP |
1108 | found++; |
1109 | } | |
9a1f0c28 | 1110 | |
23b298bc LP |
1111 | if (has_root_domain && found <= 0) { |
1112 | /* If there's exactly one SRV RR and it uses | |
1113 | * the root domain as host name, then the | |
1114 | * service is explicitly not offered on the | |
1115 | * domain. Report this as a recognizable | |
1116 | * error. See RFC 2782, Section "Usage | |
1117 | * Rules". */ | |
1118 | r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_SUCH_SERVICE, "'%s' does not provide the requested service", dns_query_string(q)); | |
1119 | goto finish; | |
45ec7efb LP |
1120 | } |
1121 | ||
1122 | if (found <= 0) { | |
23b298bc | 1123 | 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 |
1124 | goto finish; |
1125 | } | |
1126 | ||
1127 | /* Maybe we are already finished? check now... */ | |
1128 | resolve_service_all_complete(q); | |
1129 | return; | |
1130 | ||
1131 | finish: | |
2d4c5cbc | 1132 | if (r < 0) { |
45ec7efb LP |
1133 | log_error_errno(r, "Failed to send service reply: %m"); |
1134 | sd_bus_reply_method_errno(q->request, r, NULL); | |
1135 | } | |
1136 | ||
1137 | dns_query_free(q); | |
1138 | } | |
1139 | ||
1140 | static int bus_method_resolve_service(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
23b298bc LP |
1141 | _cleanup_(dns_question_unrefp) DnsQuestion *question_idna = NULL, *question_utf8 = NULL; |
1142 | const char *name, *type, *domain; | |
45ec7efb LP |
1143 | Manager *m = userdata; |
1144 | int family, ifindex; | |
1145 | uint64_t flags; | |
1146 | DnsQuery *q; | |
1147 | int r; | |
1148 | ||
1149 | assert(message); | |
1150 | assert(m); | |
1151 | ||
1152 | assert_cc(sizeof(int) == sizeof(int32_t)); | |
1153 | ||
1154 | r = sd_bus_message_read(message, "isssit", &ifindex, &name, &type, &domain, &family, &flags); | |
1155 | if (r < 0) | |
2d4c5cbc | 1156 | return r; |
45ec7efb LP |
1157 | |
1158 | if (!IN_SET(family, AF_INET, AF_INET6, AF_UNSPEC)) | |
1159 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown address family %i", family); | |
1160 | ||
1161 | if (isempty(name)) | |
1162 | name = NULL; | |
23b298bc LP |
1163 | else if (!dns_service_name_is_valid(name)) |
1164 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid service name '%s'", name); | |
2d4c5cbc | 1165 | |
45ec7efb LP |
1166 | if (isempty(type)) |
1167 | type = NULL; | |
7e8131e9 LP |
1168 | else if (!dns_srv_type_is_valid(type)) |
1169 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid SRV service type '%s'", type); | |
45ec7efb LP |
1170 | |
1171 | r = dns_name_is_valid(domain); | |
1172 | if (r < 0) | |
1173 | return r; | |
1174 | if (r == 0) | |
1175 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid domain '%s'", domain); | |
1176 | ||
1177 | if (name && !type) | |
1178 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Service name cannot be specified without service type."); | |
1179 | ||
1180 | r = check_ifindex_flags(ifindex, &flags, SD_RESOLVED_NO_TXT|SD_RESOLVED_NO_ADDRESS, error); | |
1181 | if (r < 0) | |
1182 | return r; | |
1183 | ||
23b298bc LP |
1184 | r = dns_question_new_service(&question_utf8, name, type, domain, !(flags & SD_RESOLVED_NO_TXT), false); |
1185 | if (r < 0) | |
1186 | return r; | |
45ec7efb | 1187 | |
23b298bc | 1188 | r = dns_question_new_service(&question_idna, name, type, domain, !(flags & SD_RESOLVED_NO_TXT), true); |
45ec7efb LP |
1189 | if (r < 0) |
1190 | return r; | |
1191 | ||
23b298bc | 1192 | r = dns_query_new(m, &q, question_utf8, question_idna, ifindex, flags|SD_RESOLVED_NO_SEARCH); |
45ec7efb LP |
1193 | if (r < 0) |
1194 | return r; | |
1195 | ||
1196 | q->request = sd_bus_message_ref(message); | |
1197 | q->request_family = family; | |
1198 | q->complete = bus_method_resolve_service_complete; | |
1199 | ||
1200 | r = dns_query_bus_track(q, message); | |
1201 | if (r < 0) | |
1202 | goto fail; | |
1203 | ||
1204 | r = dns_query_go(q); | |
1205 | if (r < 0) | |
1206 | goto fail; | |
1207 | ||
2d4c5cbc | 1208 | return 1; |
45ec7efb LP |
1209 | |
1210 | fail: | |
1211 | dns_query_free(q); | |
1212 | return r; | |
2d4c5cbc LP |
1213 | } |
1214 | ||
3abaabda | 1215 | int bus_dns_server_append(sd_bus_message *reply, DnsServer *s, bool with_ifindex) { |
7f220d94 LP |
1216 | int r; |
1217 | ||
1218 | assert(reply); | |
b7ac92cd YW |
1219 | |
1220 | if (!s) { | |
1221 | if (with_ifindex) | |
1222 | return sd_bus_message_append(reply, "(iiay)", 0, AF_UNSPEC, 0); | |
1223 | else | |
1224 | return sd_bus_message_append(reply, "(iay)", AF_UNSPEC, 0); | |
1225 | } | |
7f220d94 | 1226 | |
3abaabda | 1227 | r = sd_bus_message_open_container(reply, 'r', with_ifindex ? "iiay" : "iay"); |
7f220d94 LP |
1228 | if (r < 0) |
1229 | return r; | |
1230 | ||
3abaabda | 1231 | if (with_ifindex) { |
2817157b | 1232 | r = sd_bus_message_append(reply, "i", dns_server_ifindex(s)); |
3abaabda LP |
1233 | if (r < 0) |
1234 | return r; | |
1235 | } | |
1236 | ||
1237 | r = sd_bus_message_append(reply, "i", s->family); | |
7f220d94 LP |
1238 | if (r < 0) |
1239 | return r; | |
1240 | ||
1241 | r = sd_bus_message_append_array(reply, 'y', &s->address, FAMILY_ADDRESS_SIZE(s->family)); | |
1242 | if (r < 0) | |
1243 | return r; | |
1244 | ||
1245 | return sd_bus_message_close_container(reply); | |
1246 | } | |
1247 | ||
1248 | static int bus_property_get_dns_servers( | |
1249 | sd_bus *bus, | |
1250 | const char *path, | |
1251 | const char *interface, | |
1252 | const char *property, | |
1253 | sd_bus_message *reply, | |
1254 | void *userdata, | |
1255 | sd_bus_error *error) { | |
1256 | ||
1257 | Manager *m = userdata; | |
7f220d94 LP |
1258 | DnsServer *s; |
1259 | Iterator i; | |
1260 | Link *l; | |
1261 | int r; | |
1262 | ||
1263 | assert(reply); | |
1264 | assert(m); | |
1265 | ||
1266 | r = sd_bus_message_open_container(reply, 'a', "(iiay)"); | |
1267 | if (r < 0) | |
1268 | return r; | |
1269 | ||
1270 | LIST_FOREACH(servers, s, m->dns_servers) { | |
3abaabda | 1271 | r = bus_dns_server_append(reply, s, true); |
7f220d94 LP |
1272 | if (r < 0) |
1273 | return r; | |
7f220d94 LP |
1274 | } |
1275 | ||
1276 | HASHMAP_FOREACH(l, m->links, i) { | |
1277 | LIST_FOREACH(servers, s, l->dns_servers) { | |
3abaabda | 1278 | r = bus_dns_server_append(reply, s, true); |
7f220d94 LP |
1279 | if (r < 0) |
1280 | return r; | |
7f220d94 LP |
1281 | } |
1282 | } | |
1283 | ||
ad32ac53 YW |
1284 | return sd_bus_message_close_container(reply); |
1285 | } | |
1286 | ||
1287 | static int bus_property_get_fallback_dns_servers( | |
1288 | sd_bus *bus, | |
1289 | const char *path, | |
1290 | const char *interface, | |
1291 | const char *property, | |
1292 | sd_bus_message *reply, | |
1293 | void *userdata, | |
1294 | sd_bus_error *error) { | |
1295 | ||
1296 | DnsServer *s, **f = userdata; | |
1297 | int r; | |
1298 | ||
1299 | assert(reply); | |
1300 | assert(f); | |
1301 | ||
1302 | r = sd_bus_message_open_container(reply, 'a', "(iiay)"); | |
1303 | if (r < 0) | |
1304 | return r; | |
1305 | ||
1306 | LIST_FOREACH(servers, s, *f) { | |
1307 | r = bus_dns_server_append(reply, s, true); | |
1308 | if (r < 0) | |
1309 | return r; | |
7f220d94 LP |
1310 | } |
1311 | ||
1312 | return sd_bus_message_close_container(reply); | |
1313 | } | |
1314 | ||
b7ac92cd YW |
1315 | static int bus_property_get_current_dns_server( |
1316 | sd_bus *bus, | |
1317 | const char *path, | |
1318 | const char *interface, | |
1319 | const char *property, | |
1320 | sd_bus_message *reply, | |
1321 | void *userdata, | |
1322 | sd_bus_error *error) { | |
1323 | ||
1324 | DnsServer *s; | |
1325 | ||
1326 | assert(reply); | |
1327 | assert(userdata); | |
1328 | ||
1329 | s = *(DnsServer **) userdata; | |
1330 | ||
1331 | return bus_dns_server_append(reply, s, true); | |
1332 | } | |
1333 | ||
ee116b54 | 1334 | static int bus_property_get_domains( |
7f220d94 LP |
1335 | sd_bus *bus, |
1336 | const char *path, | |
1337 | const char *interface, | |
1338 | const char *property, | |
1339 | sd_bus_message *reply, | |
1340 | void *userdata, | |
1341 | sd_bus_error *error) { | |
1342 | ||
1343 | Manager *m = userdata; | |
1344 | DnsSearchDomain *d; | |
1345 | Iterator i; | |
1346 | Link *l; | |
1347 | int r; | |
1348 | ||
1349 | assert(reply); | |
1350 | assert(m); | |
1351 | ||
ad44b56b | 1352 | r = sd_bus_message_open_container(reply, 'a', "(isb)"); |
7f220d94 LP |
1353 | if (r < 0) |
1354 | return r; | |
1355 | ||
1356 | LIST_FOREACH(domains, d, m->search_domains) { | |
ad44b56b | 1357 | r = sd_bus_message_append(reply, "(isb)", 0, d->name, d->route_only); |
7f220d94 LP |
1358 | if (r < 0) |
1359 | return r; | |
1360 | } | |
1361 | ||
1362 | HASHMAP_FOREACH(l, m->links, i) { | |
1363 | LIST_FOREACH(domains, d, l->search_domains) { | |
ad44b56b | 1364 | r = sd_bus_message_append(reply, "(isb)", l->ifindex, d->name, d->route_only); |
7f220d94 LP |
1365 | if (r < 0) |
1366 | return r; | |
1367 | } | |
1368 | } | |
1369 | ||
1370 | return sd_bus_message_close_container(reply); | |
1371 | } | |
1372 | ||
a150ff5e LP |
1373 | static int bus_property_get_transaction_statistics( |
1374 | sd_bus *bus, | |
1375 | const char *path, | |
1376 | const char *interface, | |
1377 | const char *property, | |
1378 | sd_bus_message *reply, | |
1379 | void *userdata, | |
1380 | sd_bus_error *error) { | |
1381 | ||
1382 | Manager *m = userdata; | |
1383 | ||
1384 | assert(reply); | |
1385 | assert(m); | |
1386 | ||
1387 | return sd_bus_message_append(reply, "(tt)", | |
1388 | (uint64_t) hashmap_size(m->dns_transactions), | |
1389 | (uint64_t) m->n_transactions_total); | |
1390 | } | |
1391 | ||
1392 | static int bus_property_get_cache_statistics( | |
1393 | sd_bus *bus, | |
1394 | const char *path, | |
1395 | const char *interface, | |
1396 | const char *property, | |
1397 | sd_bus_message *reply, | |
1398 | void *userdata, | |
1399 | sd_bus_error *error) { | |
1400 | ||
1401 | uint64_t size = 0, hit = 0, miss = 0; | |
1402 | Manager *m = userdata; | |
1403 | DnsScope *s; | |
1404 | ||
1405 | assert(reply); | |
1406 | assert(m); | |
1407 | ||
1408 | LIST_FOREACH(scopes, s, m->dns_scopes) { | |
1409 | size += dns_cache_size(&s->cache); | |
1410 | hit += s->cache.n_hit; | |
1411 | miss += s->cache.n_miss; | |
1412 | } | |
1413 | ||
1414 | return sd_bus_message_append(reply, "(ttt)", size, hit, miss); | |
1415 | } | |
1416 | ||
1417 | static int bus_property_get_dnssec_statistics( | |
1418 | sd_bus *bus, | |
1419 | const char *path, | |
1420 | const char *interface, | |
1421 | const char *property, | |
1422 | sd_bus_message *reply, | |
1423 | void *userdata, | |
1424 | sd_bus_error *error) { | |
1425 | ||
1426 | Manager *m = userdata; | |
1427 | ||
1428 | assert(reply); | |
1429 | assert(m); | |
1430 | ||
1431 | return sd_bus_message_append(reply, "(tttt)", | |
59c5b597 LP |
1432 | (uint64_t) m->n_dnssec_verdict[DNSSEC_SECURE], |
1433 | (uint64_t) m->n_dnssec_verdict[DNSSEC_INSECURE], | |
1434 | (uint64_t) m->n_dnssec_verdict[DNSSEC_BOGUS], | |
1435 | (uint64_t) m->n_dnssec_verdict[DNSSEC_INDETERMINATE]); | |
a150ff5e LP |
1436 | } |
1437 | ||
476798b1 LP |
1438 | static int bus_property_get_ntas( |
1439 | sd_bus *bus, | |
1440 | const char *path, | |
1441 | const char *interface, | |
1442 | const char *property, | |
1443 | sd_bus_message *reply, | |
1444 | void *userdata, | |
1445 | sd_bus_error *error) { | |
1446 | ||
1447 | Manager *m = userdata; | |
1448 | const char *domain; | |
1449 | Iterator i; | |
1450 | int r; | |
1451 | ||
1452 | assert(reply); | |
1453 | assert(m); | |
1454 | ||
1455 | r = sd_bus_message_open_container(reply, 'a', "s"); | |
1456 | if (r < 0) | |
1457 | return r; | |
1458 | ||
1459 | SET_FOREACH(domain, m->trust_anchor.negative_by_name, i) { | |
1460 | r = sd_bus_message_append(reply, "s", domain); | |
1461 | if (r < 0) | |
1462 | return r; | |
1463 | } | |
1464 | ||
1465 | return sd_bus_message_close_container(reply); | |
1466 | } | |
1467 | ||
7ed1565a | 1468 | static BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_dns_stub_listener_mode, dns_stub_listener_mode, DnsStubListenerMode); |
acd380c4 YW |
1469 | static BUS_DEFINE_PROPERTY_GET(bus_property_get_dnssec_supported, "b", Manager, manager_dnssec_supported); |
1470 | static BUS_DEFINE_PROPERTY_GET2(bus_property_get_dnssec_mode, "s", Manager, manager_get_dnssec_mode, dnssec_mode_to_string); | |
c9299be2 | 1471 | 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 | 1472 | |
a150ff5e LP |
1473 | static int bus_method_reset_statistics(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
1474 | Manager *m = userdata; | |
1475 | DnsScope *s; | |
1476 | ||
1477 | assert(message); | |
1478 | assert(m); | |
1479 | ||
1480 | LIST_FOREACH(scopes, s, m->dns_scopes) | |
1481 | s->cache.n_hit = s->cache.n_miss = 0; | |
1482 | ||
1483 | m->n_transactions_total = 0; | |
59c5b597 | 1484 | zero(m->n_dnssec_verdict); |
a150ff5e LP |
1485 | |
1486 | return sd_bus_reply_method_return(message, NULL); | |
1487 | } | |
1488 | ||
3abaabda | 1489 | static int get_any_link(Manager *m, int ifindex, Link **ret, sd_bus_error *error) { |
97e5d693 LP |
1490 | Link *l; |
1491 | ||
1492 | assert(m); | |
3abaabda | 1493 | assert(ret); |
97e5d693 LP |
1494 | |
1495 | if (ifindex <= 0) | |
1496 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid interface index"); | |
1497 | ||
1498 | l = hashmap_get(m->links, INT_TO_PTR(ifindex)); | |
1499 | if (!l) | |
1500 | return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_LINK, "Link %i not known", ifindex); | |
3abaabda LP |
1501 | |
1502 | *ret = l; | |
1503 | return 0; | |
1504 | } | |
1505 | ||
d2ec6608 | 1506 | static int call_link_method(Manager *m, sd_bus_message *message, sd_bus_message_handler_t handler, sd_bus_error *error) { |
97e5d693 | 1507 | int ifindex, r; |
97e5d693 LP |
1508 | Link *l; |
1509 | ||
97e5d693 | 1510 | assert(m); |
97e5d693 | 1511 | assert(message); |
d2ec6608 | 1512 | assert(handler); |
97e5d693 | 1513 | |
d2ec6608 | 1514 | assert_cc(sizeof(int) == sizeof(int32_t)); |
97e5d693 LP |
1515 | r = sd_bus_message_read(message, "i", &ifindex); |
1516 | if (r < 0) | |
1517 | return r; | |
1518 | ||
04b764bf | 1519 | r = get_any_link(m, ifindex, &l, error); |
97e5d693 LP |
1520 | if (r < 0) |
1521 | return r; | |
1522 | ||
d2ec6608 LP |
1523 | return handler(message, l, error); |
1524 | } | |
97e5d693 | 1525 | |
d2ec6608 LP |
1526 | static int bus_method_set_link_dns_servers(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
1527 | return call_link_method(userdata, message, bus_link_method_set_dns_servers, error); | |
1528 | } | |
97e5d693 | 1529 | |
ee116b54 LP |
1530 | static int bus_method_set_link_domains(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
1531 | return call_link_method(userdata, message, bus_link_method_set_domains, error); | |
97e5d693 LP |
1532 | } |
1533 | ||
77673795 LP |
1534 | static int bus_method_set_link_default_route(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
1535 | return call_link_method(userdata, message, bus_link_method_set_default_route, error); | |
1536 | } | |
1537 | ||
97e5d693 | 1538 | static int bus_method_set_link_llmnr(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
d2ec6608 | 1539 | return call_link_method(userdata, message, bus_link_method_set_llmnr, error); |
97e5d693 LP |
1540 | } |
1541 | ||
1542 | static int bus_method_set_link_mdns(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
d2ec6608 | 1543 | return call_link_method(userdata, message, bus_link_method_set_mdns, error); |
97e5d693 LP |
1544 | } |
1545 | ||
c9299be2 IT |
1546 | static int bus_method_set_link_dns_over_tls(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
1547 | return call_link_method(userdata, message, bus_link_method_set_dns_over_tls, error); | |
b761a107 YW |
1548 | } |
1549 | ||
97e5d693 | 1550 | static int bus_method_set_link_dnssec(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
d2ec6608 | 1551 | return call_link_method(userdata, message, bus_link_method_set_dnssec, error); |
97e5d693 LP |
1552 | } |
1553 | ||
1554 | static int bus_method_set_link_dnssec_negative_trust_anchors(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
d2ec6608 | 1555 | return call_link_method(userdata, message, bus_link_method_set_dnssec_negative_trust_anchors, error); |
97e5d693 LP |
1556 | } |
1557 | ||
1558 | static int bus_method_revert_link(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
d2ec6608 | 1559 | return call_link_method(userdata, message, bus_link_method_revert, error); |
97e5d693 LP |
1560 | } |
1561 | ||
3abaabda LP |
1562 | static int bus_method_get_link(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
1563 | _cleanup_free_ char *p = NULL; | |
1564 | Manager *m = userdata; | |
1565 | int r, ifindex; | |
1566 | Link *l; | |
1567 | ||
1568 | assert(message); | |
1569 | assert(m); | |
1570 | ||
1571 | assert_cc(sizeof(int) == sizeof(int32_t)); | |
3abaabda LP |
1572 | r = sd_bus_message_read(message, "i", &ifindex); |
1573 | if (r < 0) | |
1574 | return r; | |
1575 | ||
1576 | r = get_any_link(m, ifindex, &l, error); | |
1577 | if (r < 0) | |
1578 | return r; | |
1579 | ||
1580 | p = link_bus_path(l); | |
1581 | if (!p) | |
1582 | return -ENOMEM; | |
1583 | ||
1584 | return sd_bus_reply_method_return(message, "o", p); | |
1585 | } | |
1586 | ||
ba35662f LP |
1587 | static int bus_method_flush_caches(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
1588 | Manager *m = userdata; | |
1589 | ||
1590 | assert(message); | |
1591 | assert(m); | |
1592 | ||
1593 | manager_flush_caches(m); | |
1594 | ||
1595 | return sd_bus_reply_method_return(message, NULL); | |
1596 | } | |
1597 | ||
d55b0463 LP |
1598 | static int bus_method_reset_server_features(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
1599 | Manager *m = userdata; | |
1600 | ||
1601 | assert(message); | |
1602 | assert(m); | |
1603 | ||
1604 | manager_reset_server_features(m); | |
1605 | ||
1606 | return sd_bus_reply_method_return(message, NULL); | |
1607 | } | |
1608 | ||
c3036641 DR |
1609 | static int on_bus_track(sd_bus_track *t, void *userdata) { |
1610 | DnssdService *s = userdata; | |
1611 | ||
1612 | assert(t); | |
1613 | assert(s); | |
1614 | ||
1615 | log_debug("Client of active request vanished, destroying DNS-SD service."); | |
1616 | dnssd_service_free(s); | |
1617 | ||
1618 | return 0; | |
1619 | } | |
1620 | ||
1621 | static int bus_method_register_service(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
84b0f133 | 1622 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
c3036641 DR |
1623 | _cleanup_(dnssd_service_freep) DnssdService *service = NULL; |
1624 | _cleanup_(sd_bus_track_unrefp) sd_bus_track *bus_track = NULL; | |
1625 | _cleanup_free_ char *path = NULL; | |
1626 | _cleanup_free_ char *instance_name = NULL; | |
1627 | Manager *m = userdata; | |
1628 | DnssdService *s = NULL; | |
c3036641 DR |
1629 | const char *name; |
1630 | const char *name_template; | |
1631 | const char *type; | |
84b0f133 | 1632 | uid_t euid; |
c3036641 DR |
1633 | int r; |
1634 | ||
1635 | assert(message); | |
1636 | assert(m); | |
1637 | ||
1638 | if (m->mdns_support != RESOLVE_SUPPORT_YES) | |
1639 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Support for MulticastDNS is disabled"); | |
1640 | ||
84b0f133 DR |
1641 | r = bus_verify_polkit_async(message, CAP_SYS_ADMIN, |
1642 | "org.freedesktop.resolve1.register-service", | |
1643 | NULL, false, UID_INVALID, | |
1644 | &m->polkit_registry, error); | |
1645 | if (r < 0) | |
1646 | return r; | |
1647 | if (r == 0) | |
1648 | return 1; /* Polkit will call us back */ | |
1649 | ||
c3036641 DR |
1650 | service = new0(DnssdService, 1); |
1651 | if (!service) | |
1652 | return log_oom(); | |
1653 | ||
84b0f133 DR |
1654 | r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds); |
1655 | if (r < 0) | |
1656 | return r; | |
1657 | ||
1658 | r = sd_bus_creds_get_euid(creds, &euid); | |
1659 | if (r < 0) | |
1660 | return r; | |
1661 | service->originator = euid; | |
1662 | ||
c3036641 DR |
1663 | r = sd_bus_message_read(message, "sssqqq", &name, &name_template, &type, |
1664 | &service->port, &service->priority, | |
1665 | &service->weight); | |
1666 | if (r < 0) | |
1667 | return r; | |
1668 | ||
1669 | s = hashmap_get(m->dnssd_services, name); | |
1670 | if (s) | |
1671 | return sd_bus_error_setf(error, BUS_ERROR_DNSSD_SERVICE_EXISTS, "DNS-SD service '%s' exists already", name); | |
1672 | ||
1673 | if (!dnssd_srv_type_is_valid(type)) | |
1674 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "DNS-SD service type '%s' is invalid", type); | |
1675 | ||
1676 | service->name = strdup(name); | |
1677 | if (!service->name) | |
1678 | return log_oom(); | |
1679 | ||
1680 | service->name_template = strdup(name_template); | |
1681 | if (!service->name_template) | |
1682 | return log_oom(); | |
1683 | ||
1684 | service->type = strdup(type); | |
1685 | if (!service->type) | |
1686 | return log_oom(); | |
1687 | ||
1688 | r = dnssd_render_instance_name(service, &instance_name); | |
1689 | if (r < 0) | |
1690 | return r; | |
1691 | ||
400f54fb | 1692 | r = sd_bus_message_enter_container(message, SD_BUS_TYPE_ARRAY, "a{say}"); |
c3036641 | 1693 | if (r < 0) |
400f54fb | 1694 | return r; |
c3036641 | 1695 | |
400f54fb DR |
1696 | while ((r = sd_bus_message_enter_container(message, SD_BUS_TYPE_ARRAY, "{say}")) > 0) { |
1697 | _cleanup_(dnssd_txtdata_freep) DnssdTxtData *txt_data = NULL; | |
1698 | DnsTxtItem *last = NULL; | |
c3036641 | 1699 | |
400f54fb DR |
1700 | txt_data = new0(DnssdTxtData, 1); |
1701 | if (!txt_data) | |
1702 | return log_oom(); | |
1703 | ||
1704 | while ((r = sd_bus_message_enter_container(message, SD_BUS_TYPE_DICT_ENTRY, "say")) > 0) { | |
1705 | const char *key; | |
1706 | const void *value; | |
1707 | size_t size; | |
1708 | DnsTxtItem *i; | |
1709 | ||
1710 | r = sd_bus_message_read(message, "s", &key); | |
1711 | if (r < 0) | |
1712 | return r; | |
1713 | ||
1714 | if (isempty(key)) | |
1715 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Keys in DNS-SD TXT RRs can't be empty"); | |
c3036641 | 1716 | |
400f54fb DR |
1717 | if (!ascii_is_valid(key)) |
1718 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "TXT key '%s' contains non-ASCII symbols", key); | |
c3036641 | 1719 | |
400f54fb DR |
1720 | r = sd_bus_message_read_array(message, 'y', &value, &size); |
1721 | if (r < 0) | |
1722 | return r; | |
c3036641 | 1723 | |
400f54fb DR |
1724 | r = dnssd_txt_item_new_from_data(key, value, size, &i); |
1725 | if (r < 0) | |
1726 | return r; | |
1727 | ||
1728 | LIST_INSERT_AFTER(items, txt_data->txt, last, i); | |
1729 | last = i; | |
1730 | ||
1731 | r = sd_bus_message_exit_container(message); | |
1732 | if (r < 0) | |
1733 | return r; | |
1734 | ||
1735 | } | |
c3036641 | 1736 | if (r < 0) |
400f54fb | 1737 | return r; |
c3036641 | 1738 | |
400f54fb | 1739 | r = sd_bus_message_exit_container(message); |
c3036641 | 1740 | if (r < 0) |
400f54fb | 1741 | return r; |
c3036641 | 1742 | |
400f54fb DR |
1743 | if (txt_data->txt) { |
1744 | LIST_PREPEND(items, service->txt_data_items, txt_data); | |
1745 | txt_data = NULL; | |
1746 | } | |
c3036641 | 1747 | } |
400f54fb DR |
1748 | if (r < 0) |
1749 | return r; | |
c3036641 DR |
1750 | |
1751 | r = sd_bus_message_exit_container(message); | |
1752 | if (r < 0) | |
400f54fb DR |
1753 | return r; |
1754 | ||
1755 | if (!service->txt_data_items) { | |
1756 | _cleanup_(dnssd_txtdata_freep) DnssdTxtData *txt_data = NULL; | |
c3036641 | 1757 | |
400f54fb DR |
1758 | txt_data = new0(DnssdTxtData, 1); |
1759 | if (!txt_data) | |
1760 | return log_oom(); | |
1761 | ||
1762 | r = dns_txt_item_new_empty(&txt_data->txt); | |
c3036641 | 1763 | if (r < 0) |
400f54fb DR |
1764 | return r; |
1765 | ||
1766 | LIST_PREPEND(items, service->txt_data_items, txt_data); | |
1767 | txt_data = NULL; | |
c3036641 DR |
1768 | } |
1769 | ||
1770 | r = sd_bus_path_encode("/org/freedesktop/resolve1/dnssd", service->name, &path); | |
1771 | if (r < 0) | |
1772 | return r; | |
1773 | ||
1774 | r = hashmap_ensure_allocated(&m->dnssd_services, &string_hash_ops); | |
1775 | if (r < 0) | |
1776 | return r; | |
1777 | ||
1778 | r = hashmap_put(m->dnssd_services, service->name, service); | |
1779 | if (r < 0) | |
1780 | return r; | |
1781 | ||
1782 | r = sd_bus_track_new(sd_bus_message_get_bus(message), &bus_track, on_bus_track, service); | |
1783 | if (r < 0) | |
1784 | return r; | |
1785 | ||
1786 | r = sd_bus_track_add_sender(bus_track, message); | |
1787 | if (r < 0) | |
1788 | return r; | |
1789 | ||
1790 | service->manager = m; | |
1791 | ||
1792 | service = NULL; | |
1793 | ||
1794 | manager_refresh_rrs(m); | |
1795 | ||
1796 | return sd_bus_reply_method_return(message, "o", path); | |
1797 | } | |
1798 | ||
1799 | static int call_dnssd_method(Manager *m, sd_bus_message *message, sd_bus_message_handler_t handler, sd_bus_error *error) { | |
1800 | _cleanup_free_ char *name = NULL; | |
1801 | DnssdService *s = NULL; | |
1802 | const char *path; | |
1803 | int r; | |
1804 | ||
1805 | assert(m); | |
1806 | assert(message); | |
1807 | assert(handler); | |
1808 | ||
1809 | r = sd_bus_message_read(message, "o", &path); | |
1810 | if (r < 0) | |
1811 | return r; | |
1812 | ||
1813 | r = sd_bus_path_decode(path, "/org/freedesktop/resolve1/dnssd", &name); | |
1814 | if (r == 0) | |
1815 | return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DNSSD_SERVICE, "DNS-SD service with object path '%s' does not exist", path); | |
1816 | if (r < 0) | |
1817 | return r; | |
1818 | ||
1819 | s = hashmap_get(m->dnssd_services, name); | |
1820 | if (!s) | |
1821 | return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DNSSD_SERVICE, "DNS-SD service '%s' not known", name); | |
1822 | ||
1823 | return handler(message, s, error); | |
1824 | } | |
1825 | ||
1826 | static int bus_method_unregister_service(sd_bus_message *message, void *userdata, sd_bus_error *error) { | |
1827 | Manager *m = userdata; | |
1828 | ||
1829 | assert(message); | |
1830 | assert(m); | |
1831 | ||
1832 | return call_dnssd_method(m, message, bus_dnssd_method_unregister, error); | |
1833 | } | |
1834 | ||
74b2466e LP |
1835 | static const sd_bus_vtable resolve_vtable[] = { |
1836 | SD_BUS_VTABLE_START(0), | |
7f220d94 | 1837 | SD_BUS_PROPERTY("LLMNRHostname", "s", NULL, offsetof(Manager, llmnr_hostname), 0), |
bf4e5c4c YW |
1838 | SD_BUS_PROPERTY("LLMNR", "s", bus_property_get_resolve_support, offsetof(Manager, llmnr_support), 0), |
1839 | SD_BUS_PROPERTY("MulticastDNS", "s", bus_property_get_resolve_support, offsetof(Manager, mdns_support), 0), | |
c9299be2 | 1840 | SD_BUS_PROPERTY("DNSOverTLS", "s", bus_property_get_dns_over_tls_mode, 0, 0), |
e40f0647 | 1841 | SD_BUS_PROPERTY("DNS", "a(iiay)", bus_property_get_dns_servers, 0, 0), |
ad32ac53 | 1842 | SD_BUS_PROPERTY("FallbackDNS", "a(iiay)", bus_property_get_fallback_dns_servers, offsetof(Manager, fallback_dns_servers), SD_BUS_VTABLE_PROPERTY_CONST), |
b7ac92cd | 1843 | SD_BUS_PROPERTY("CurrentDNSServer", "(iiay)", bus_property_get_current_dns_server, offsetof(Manager, current_dns_server), 0), |
ee116b54 | 1844 | SD_BUS_PROPERTY("Domains", "a(isb)", bus_property_get_domains, 0, 0), |
a150ff5e LP |
1845 | SD_BUS_PROPERTY("TransactionStatistics", "(tt)", bus_property_get_transaction_statistics, 0, 0), |
1846 | SD_BUS_PROPERTY("CacheStatistics", "(ttt)", bus_property_get_cache_statistics, 0, 0), | |
bf4e5c4c | 1847 | SD_BUS_PROPERTY("DNSSEC", "s", bus_property_get_dnssec_mode, 0, 0), |
a150ff5e | 1848 | SD_BUS_PROPERTY("DNSSECStatistics", "(tttt)", bus_property_get_dnssec_statistics, 0, 0), |
593f665c | 1849 | SD_BUS_PROPERTY("DNSSECSupported", "b", bus_property_get_dnssec_supported, 0, 0), |
476798b1 | 1850 | SD_BUS_PROPERTY("DNSSECNegativeTrustAnchors", "as", bus_property_get_ntas, 0, 0), |
7ed1565a | 1851 | SD_BUS_PROPERTY("DNSStubListener", "s", bus_property_get_dns_stub_listener_mode, offsetof(Manager, dns_stub_listener_mode), 0), |
7f220d94 | 1852 | |
78c6a153 LP |
1853 | SD_BUS_METHOD("ResolveHostname", "isit", "a(iiay)st", bus_method_resolve_hostname, SD_BUS_VTABLE_UNPRIVILEGED), |
1854 | SD_BUS_METHOD("ResolveAddress", "iiayt", "a(is)t", bus_method_resolve_address, SD_BUS_VTABLE_UNPRIVILEGED), | |
1855 | SD_BUS_METHOD("ResolveRecord", "isqqt", "a(iqqay)t", bus_method_resolve_record, SD_BUS_VTABLE_UNPRIVILEGED), | |
45ec7efb | 1856 | SD_BUS_METHOD("ResolveService", "isssit", "a(qqqsa(iiay)s)aayssst", bus_method_resolve_service, SD_BUS_VTABLE_UNPRIVILEGED), |
a150ff5e | 1857 | SD_BUS_METHOD("ResetStatistics", NULL, NULL, bus_method_reset_statistics, 0), |
ba35662f | 1858 | SD_BUS_METHOD("FlushCaches", NULL, NULL, bus_method_flush_caches, 0), |
d55b0463 | 1859 | SD_BUS_METHOD("ResetServerFeatures", NULL, NULL, bus_method_reset_server_features, 0), |
3abaabda | 1860 | SD_BUS_METHOD("GetLink", "i", "o", bus_method_get_link, SD_BUS_VTABLE_UNPRIVILEGED), |
97e5d693 | 1861 | SD_BUS_METHOD("SetLinkDNS", "ia(iay)", NULL, bus_method_set_link_dns_servers, 0), |
ee116b54 | 1862 | SD_BUS_METHOD("SetLinkDomains", "ia(sb)", NULL, bus_method_set_link_domains, 0), |
77673795 | 1863 | SD_BUS_METHOD("SetLinkDefaultRoute", "ib", NULL, bus_method_set_link_default_route, 0), |
97e5d693 LP |
1864 | SD_BUS_METHOD("SetLinkLLMNR", "is", NULL, bus_method_set_link_llmnr, 0), |
1865 | SD_BUS_METHOD("SetLinkMulticastDNS", "is", NULL, bus_method_set_link_mdns, 0), | |
c9299be2 | 1866 | SD_BUS_METHOD("SetLinkDNSOverTLS", "is", NULL, bus_method_set_link_dns_over_tls, 0), |
97e5d693 LP |
1867 | SD_BUS_METHOD("SetLinkDNSSEC", "is", NULL, bus_method_set_link_dnssec, 0), |
1868 | SD_BUS_METHOD("SetLinkDNSSECNegativeTrustAnchors", "ias", NULL, bus_method_set_link_dnssec_negative_trust_anchors, 0), | |
1869 | SD_BUS_METHOD("RevertLink", "i", NULL, bus_method_revert_link, 0), | |
1870 | ||
400f54fb | 1871 | SD_BUS_METHOD("RegisterService", "sssqqqaa{say}", "o", bus_method_register_service, SD_BUS_VTABLE_UNPRIVILEGED), |
84b0f133 | 1872 | SD_BUS_METHOD("UnregisterService", "o", NULL, bus_method_unregister_service, SD_BUS_VTABLE_UNPRIVILEGED), |
74b2466e LP |
1873 | SD_BUS_VTABLE_END, |
1874 | }; | |
1875 | ||
19070062 | 1876 | static int match_prepare_for_sleep(sd_bus_message *message, void *userdata, sd_bus_error *ret_error) { |
902bb5d8 LP |
1877 | Manager *m = userdata; |
1878 | int b, r; | |
1879 | ||
19070062 LP |
1880 | assert(message); |
1881 | assert(m); | |
902bb5d8 LP |
1882 | |
1883 | r = sd_bus_message_read(message, "b", &b); | |
1884 | if (r < 0) { | |
da927ba9 | 1885 | log_debug_errno(r, "Failed to parse PrepareForSleep signal: %m"); |
902bb5d8 LP |
1886 | return 0; |
1887 | } | |
1888 | ||
1889 | if (b) | |
1890 | return 0; | |
1891 | ||
1892 | log_debug("Coming back from suspend, verifying all RRs..."); | |
1893 | ||
1894 | manager_verify_all(m); | |
1895 | return 0; | |
1896 | } | |
1897 | ||
74b2466e LP |
1898 | int manager_connect_bus(Manager *m) { |
1899 | int r; | |
1900 | ||
1901 | assert(m); | |
1902 | ||
1903 | if (m->bus) | |
1904 | return 0; | |
1905 | ||
8c6afb77 | 1906 | r = bus_open_system_watch_bind_with_description(&m->bus, "bus-api-resolve"); |
d7afd945 LP |
1907 | if (r < 0) |
1908 | return log_error_errno(r, "Failed to connect to system bus: %m"); | |
74b2466e | 1909 | |
4d1cf1e2 | 1910 | r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/resolve1", "org.freedesktop.resolve1.Manager", resolve_vtable, m); |
f647962d MS |
1911 | if (r < 0) |
1912 | return log_error_errno(r, "Failed to register object: %m"); | |
74b2466e | 1913 | |
3abaabda LP |
1914 | r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/resolve1/link", "org.freedesktop.resolve1.Link", link_vtable, link_object_find, m); |
1915 | if (r < 0) | |
1916 | return log_error_errno(r, "Failed to register link objects: %m"); | |
1917 | ||
1918 | r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/resolve1/link", link_node_enumerator, m); | |
1919 | if (r < 0) | |
1920 | return log_error_errno(r, "Failed to register link enumerator: %m"); | |
1921 | ||
c3036641 DR |
1922 | r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/resolve1/dnssd", "org.freedesktop.resolve1.DnssdService", dnssd_vtable, dnssd_object_find, m); |
1923 | if (r < 0) | |
1924 | return log_error_errno(r, "Failed to register dnssd objects: %m"); | |
1925 | ||
1926 | r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/resolve1/dnssd", dnssd_node_enumerator, m); | |
1927 | if (r < 0) | |
1928 | return log_error_errno(r, "Failed to register dnssd enumerator: %m"); | |
1929 | ||
62fb7e80 | 1930 | r = sd_bus_request_name_async(m->bus, NULL, "org.freedesktop.resolve1", 0, NULL, NULL); |
f647962d | 1931 | if (r < 0) |
0c0b9306 | 1932 | return log_error_errno(r, "Failed to request name: %m"); |
74b2466e LP |
1933 | |
1934 | r = sd_bus_attach_event(m->bus, m->event, 0); | |
f647962d MS |
1935 | if (r < 0) |
1936 | return log_error_errno(r, "Failed to attach bus to event loop: %m"); | |
74b2466e | 1937 | |
75152a4d LP |
1938 | r = sd_bus_match_signal_async( |
1939 | m->bus, | |
4b0051b1 | 1940 | NULL, |
75152a4d LP |
1941 | "org.freedesktop.login1", |
1942 | "/org/freedesktop/login1", | |
1943 | "org.freedesktop.login1.Manager", | |
1944 | "PrepareForSleep", | |
1945 | match_prepare_for_sleep, | |
1946 | NULL, | |
1947 | m); | |
1948 | if (r < 0) | |
d7afd945 | 1949 | log_warning_errno(r, "Failed to request match for PrepareForSleep, ignoring: %m"); |
902bb5d8 | 1950 | |
74b2466e LP |
1951 | return 0; |
1952 | } |