1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
3 /* GIO - GLib Input, Output and Streaming Library
5 * Copyright (C) 2008 Red Hat, Inc.
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General
18 * Public License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20 * Boston, MA 02111-1307, USA.
27 #include "gresolver.h"
28 #include "gnetworkingprivate.h"
29 #include "gasyncresult.h"
30 #include "ginetaddress.h"
31 #include "ginetsocketaddress.h"
32 #include "gsimpleasyncresult.h"
33 #include "gsrvtarget.h"
36 #include "gunixresolver.h"
40 #include "gwin32resolver.h"
48 * @short_description: Asynchronous and cancellable DNS resolver
51 * #GResolver provides cancellable synchronous and asynchronous DNS
52 * resolution, for hostnames (g_resolver_lookup_by_address(),
53 * g_resolver_lookup_by_name() and their async variants) and SRV
54 * (service) records (g_resolver_lookup_service()).
56 * #GNetworkAddress and #GNetworkService provide wrappers around
57 * #GResolver functionality that also implement #GSocketConnectable,
58 * making it easy to connect to a remote host/service.
66 static guint signals[LAST_SIGNAL] = { 0 };
68 struct _GResolverPrivate {
70 time_t resolv_conf_timestamp;
79 * The object that handles DNS resolution. Use g_resolver_get_default()
80 * to get the default resolver.
82 G_DEFINE_TYPE (GResolver, g_resolver, G_TYPE_OBJECT)
85 g_resolver_class_init (GResolverClass *resolver_class)
89 g_type_class_add_private (resolver_class, sizeof (GResolverPrivate));
91 /* Make sure _g_networking_init() has been called */
92 type = g_inet_address_get_type ();
93 (type); /* To avoid -Wunused-but-set-variable */
95 /* Initialize _g_resolver_addrinfo_hints */
97 _g_resolver_addrinfo_hints.ai_flags |= AI_ADDRCONFIG;
99 /* These two don't actually matter, they just get copied into the
100 * returned addrinfo structures (and then we ignore them). But if
101 * we leave them unset, we'll get back duplicate answers.
103 _g_resolver_addrinfo_hints.ai_socktype = SOCK_STREAM;
104 _g_resolver_addrinfo_hints.ai_protocol = IPPROTO_TCP;
108 * @resolver: a #GResolver
110 * Emitted when the resolver notices that the system resolver
111 * configuration has changed.
114 g_signal_new (I_("reload"),
117 G_STRUCT_OFFSET (GResolverClass, reload),
119 g_cclosure_marshal_VOID__VOID,
124 g_resolver_init (GResolver *resolver)
130 resolver->priv = G_TYPE_INSTANCE_GET_PRIVATE (resolver, G_TYPE_RESOLVER, GResolverPrivate);
133 if (stat (_PATH_RESCONF, &st) == 0)
134 resolver->priv->resolv_conf_timestamp = st.st_mtime;
138 static GResolver *default_resolver;
141 * g_resolver_get_default:
143 * Gets the default #GResolver. You should unref it when you are done
144 * with it. #GResolver may use its reference count as a hint about how
145 * many threads/processes, etc it should allocate for concurrent DNS
148 * Return value: (transfer full): the default #GResolver.
153 g_resolver_get_default (void)
155 if (!default_resolver)
157 if (g_thread_supported ())
158 default_resolver = g_object_new (G_TYPE_THREADED_RESOLVER, NULL);
161 #if defined(G_OS_UNIX)
162 default_resolver = g_object_new (G_TYPE_UNIX_RESOLVER, NULL);
163 #elif defined(G_OS_WIN32)
164 default_resolver = g_object_new (G_TYPE_WIN32_RESOLVER, NULL);
169 return g_object_ref (default_resolver);
173 * g_resolver_set_default:
174 * @resolver: the new default #GResolver
176 * Sets @resolver to be the application's default resolver (reffing
177 * @resolver, and unreffing the previous default resolver, if any).
178 * Future calls to g_resolver_get_default() will return this resolver.
180 * This can be used if an application wants to perform any sort of DNS
181 * caching or "pinning"; it can implement its own #GResolver that
182 * calls the original default resolver for DNS operations, and
183 * implements its own cache policies on top of that, and then set
184 * itself as the default resolver for all later code to use.
189 g_resolver_set_default (GResolver *resolver)
191 if (default_resolver)
192 g_object_unref (default_resolver);
193 default_resolver = g_object_ref (resolver);
198 g_resolver_maybe_reload (GResolver *resolver)
203 if (stat (_PATH_RESCONF, &st) == 0)
205 if (st.st_mtime != resolver->priv->resolv_conf_timestamp)
207 resolver->priv->resolv_conf_timestamp = st.st_mtime;
209 g_signal_emit (resolver, signals[RELOAD], 0);
216 * g_resolver_lookup_by_name:
217 * @resolver: a #GResolver
218 * @hostname: the hostname to look up
219 * @cancellable: (allow-none): a #GCancellable, or %NULL
220 * @error: return location for a #GError, or %NULL
222 * Synchronously resolves @hostname to determine its associated IP
223 * address(es). @hostname may be an ASCII-only or UTF-8 hostname, or
224 * the textual form of an IP address (in which case this just becomes
225 * a wrapper around g_inet_address_new_from_string()).
227 * On success, g_resolver_lookup_by_name() will return a #GList of
228 * #GInetAddress, sorted in order of preference. (That is, you should
229 * attempt to connect to the first address first, then the second if
230 * the first fails, etc.)
232 * If the DNS resolution fails, @error (if non-%NULL) will be set to a
233 * value from #GResolverError.
235 * If @cancellable is non-%NULL, it can be used to cancel the
236 * operation, in which case @error (if non-%NULL) will be set to
237 * %G_IO_ERROR_CANCELLED.
239 * If you are planning to connect to a socket on the resolved IP
240 * address, it may be easier to create a #GNetworkAddress and use its
241 * #GSocketConnectable interface.
243 * Return value: (element-type GInetAddress) (transfer full): a #GList
244 * of #GInetAddress, or %NULL on error. You
245 * must unref each of the addresses and free the list when you are
246 * done with it. (You can use g_resolver_free_addresses() to do this.)
251 g_resolver_lookup_by_name (GResolver *resolver,
252 const gchar *hostname,
253 GCancellable *cancellable,
258 gchar *ascii_hostname = NULL;
260 g_return_val_if_fail (G_IS_RESOLVER (resolver), NULL);
261 g_return_val_if_fail (hostname != NULL, NULL);
263 /* Check if @hostname is just an IP address */
264 addr = g_inet_address_new_from_string (hostname);
266 return g_list_append (NULL, addr);
268 if (g_hostname_is_non_ascii (hostname))
269 hostname = ascii_hostname = g_hostname_to_ascii (hostname);
271 g_resolver_maybe_reload (resolver);
272 addrs = G_RESOLVER_GET_CLASS (resolver)->
273 lookup_by_name (resolver, hostname, cancellable, error);
275 g_free (ascii_hostname);
280 * g_resolver_lookup_by_name_async:
281 * @resolver: a #GResolver
282 * @hostname: the hostname to look up the address of
283 * @cancellable: (allow-none): a #GCancellable, or %NULL
284 * @callback: (scope async): callback to call after resolution completes
285 * @user_data: (closure): data for @callback
287 * Begins asynchronously resolving @hostname to determine its
288 * associated IP address(es), and eventually calls @callback, which
289 * must call g_resolver_lookup_by_name_finish() to get the result.
290 * See g_resolver_lookup_by_name() for more details.
295 g_resolver_lookup_by_name_async (GResolver *resolver,
296 const gchar *hostname,
297 GCancellable *cancellable,
298 GAsyncReadyCallback callback,
302 gchar *ascii_hostname = NULL;
304 g_return_if_fail (G_IS_RESOLVER (resolver));
305 g_return_if_fail (hostname != NULL);
307 /* Check if @hostname is just an IP address */
308 addr = g_inet_address_new_from_string (hostname);
311 GSimpleAsyncResult *simple;
313 simple = g_simple_async_result_new (G_OBJECT (resolver),
315 g_resolver_lookup_by_name_async);
317 g_simple_async_result_set_op_res_gpointer (simple, addr, g_object_unref);
318 g_simple_async_result_complete_in_idle (simple);
319 g_object_unref (simple);
323 if (g_hostname_is_non_ascii (hostname))
324 hostname = ascii_hostname = g_hostname_to_ascii (hostname);
326 g_resolver_maybe_reload (resolver);
327 G_RESOLVER_GET_CLASS (resolver)->
328 lookup_by_name_async (resolver, hostname, cancellable, callback, user_data);
330 g_free (ascii_hostname);
334 * g_resolver_lookup_by_name_finish:
335 * @resolver: a #GResolver
336 * @result: the result passed to your #GAsyncReadyCallback
337 * @error: return location for a #GError, or %NULL
339 * Retrieves the result of a call to
340 * g_resolver_lookup_by_name_async().
342 * If the DNS resolution failed, @error (if non-%NULL) will be set to
343 * a value from #GResolverError. If the operation was cancelled,
344 * @error will be set to %G_IO_ERROR_CANCELLED.
346 * Return value: (element-type GInetAddress) (transfer full): a #GList
347 * of #GInetAddress, or %NULL on error. See g_resolver_lookup_by_name()
353 g_resolver_lookup_by_name_finish (GResolver *resolver,
354 GAsyncResult *result,
357 g_return_val_if_fail (G_IS_RESOLVER (resolver), NULL);
359 if (G_IS_SIMPLE_ASYNC_RESULT (result))
361 GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
363 if (g_simple_async_result_propagate_error (simple, error))
366 /* Handle the stringified-IP-addr case */
367 if (g_simple_async_result_get_source_tag (simple) == g_resolver_lookup_by_name_async)
371 addr = g_simple_async_result_get_op_res_gpointer (simple);
372 return g_list_append (NULL, g_object_ref (addr));
376 return G_RESOLVER_GET_CLASS (resolver)->
377 lookup_by_name_finish (resolver, result, error);
381 * g_resolver_free_addresses: (skip)
382 * @addresses: a #GList of #GInetAddress
384 * Frees @addresses (which should be the return value from
385 * g_resolver_lookup_by_name() or g_resolver_lookup_by_name_finish()).
386 * (This is a convenience method; you can also simply free the results
392 g_resolver_free_addresses (GList *addresses)
396 for (a = addresses; a; a = a->next)
397 g_object_unref (a->data);
398 g_list_free (addresses);
402 * g_resolver_lookup_by_address:
403 * @resolver: a #GResolver
404 * @address: the address to reverse-resolve
405 * @cancellable: (allow-none): a #GCancellable, or %NULL
406 * @error: return location for a #GError, or %NULL
408 * Synchronously reverse-resolves @address to determine its
409 * associated hostname.
411 * If the DNS resolution fails, @error (if non-%NULL) will be set to
412 * a value from #GResolverError.
414 * If @cancellable is non-%NULL, it can be used to cancel the
415 * operation, in which case @error (if non-%NULL) will be set to
416 * %G_IO_ERROR_CANCELLED.
418 * Return value: a hostname (either ASCII-only, or in ASCII-encoded
419 * form), or %NULL on error.
424 g_resolver_lookup_by_address (GResolver *resolver,
425 GInetAddress *address,
426 GCancellable *cancellable,
429 g_return_val_if_fail (G_IS_RESOLVER (resolver), NULL);
430 g_return_val_if_fail (G_IS_INET_ADDRESS (address), NULL);
432 g_resolver_maybe_reload (resolver);
433 return G_RESOLVER_GET_CLASS (resolver)->
434 lookup_by_address (resolver, address, cancellable, error);
438 * g_resolver_lookup_by_address_async:
439 * @resolver: a #GResolver
440 * @address: the address to reverse-resolve
441 * @cancellable: (allow-none): a #GCancellable, or %NULL
442 * @callback: (scope async): callback to call after resolution completes
443 * @user_data: (closure): data for @callback
445 * Begins asynchronously reverse-resolving @address to determine its
446 * associated hostname, and eventually calls @callback, which must
447 * call g_resolver_lookup_by_address_finish() to get the final result.
452 g_resolver_lookup_by_address_async (GResolver *resolver,
453 GInetAddress *address,
454 GCancellable *cancellable,
455 GAsyncReadyCallback callback,
458 g_return_if_fail (G_IS_RESOLVER (resolver));
459 g_return_if_fail (G_IS_INET_ADDRESS (address));
461 g_resolver_maybe_reload (resolver);
462 G_RESOLVER_GET_CLASS (resolver)->
463 lookup_by_address_async (resolver, address, cancellable, callback, user_data);
467 * g_resolver_lookup_by_address_finish:
468 * @resolver: a #GResolver
469 * @result: the result passed to your #GAsyncReadyCallback
470 * @error: return location for a #GError, or %NULL
472 * Retrieves the result of a previous call to
473 * g_resolver_lookup_by_address_async().
475 * If the DNS resolution failed, @error (if non-%NULL) will be set to
476 * a value from #GResolverError. If the operation was cancelled,
477 * @error will be set to %G_IO_ERROR_CANCELLED.
479 * Return value: a hostname (either ASCII-only, or in ASCII-encoded
480 * form), or %NULL on error.
485 g_resolver_lookup_by_address_finish (GResolver *resolver,
486 GAsyncResult *result,
489 g_return_val_if_fail (G_IS_RESOLVER (resolver), NULL);
491 if (G_IS_SIMPLE_ASYNC_RESULT (result))
493 GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
495 if (g_simple_async_result_propagate_error (simple, error))
499 return G_RESOLVER_GET_CLASS (resolver)->
500 lookup_by_address_finish (resolver, result, error);
504 g_resolver_get_service_rrname (const char *service,
505 const char *protocol,
508 gchar *rrname, *ascii_domain = NULL;
510 if (g_hostname_is_non_ascii (domain))
511 domain = ascii_domain = g_hostname_to_ascii (domain);
513 rrname = g_strdup_printf ("_%s._%s.%s", service, protocol, domain);
515 g_free (ascii_domain);
520 * g_resolver_lookup_service:
521 * @resolver: a #GResolver
522 * @service: the service type to look up (eg, "ldap")
523 * @protocol: the networking protocol to use for @service (eg, "tcp")
524 * @domain: the DNS domain to look up the service in
525 * @cancellable: (allow-none): a #GCancellable, or %NULL
526 * @error: return location for a #GError, or %NULL
528 * Synchronously performs a DNS SRV lookup for the given @service and
529 * @protocol in the given @domain and returns an array of #GSrvTarget.
530 * @domain may be an ASCII-only or UTF-8 hostname. Note also that the
531 * @service and @protocol arguments <emphasis>do not</emphasis>
532 * include the leading underscore that appears in the actual DNS
535 * On success, g_resolver_lookup_service() will return a #GList of
536 * #GSrvTarget, sorted in order of preference. (That is, you should
537 * attempt to connect to the first target first, then the second if
538 * the first fails, etc.)
540 * If the DNS resolution fails, @error (if non-%NULL) will be set to
541 * a value from #GResolverError.
543 * If @cancellable is non-%NULL, it can be used to cancel the
544 * operation, in which case @error (if non-%NULL) will be set to
545 * %G_IO_ERROR_CANCELLED.
547 * If you are planning to connect to the service, it is usually easier
548 * to create a #GNetworkService and use its #GSocketConnectable
551 * Return value: (element-type GSrvTarget) (transfer full): a #GList of #GSrvTarget,
552 * or %NULL on error. You must free each of the targets and the list when you are
553 * done with it. (You can use g_resolver_free_targets() to do this.)
558 g_resolver_lookup_service (GResolver *resolver,
559 const gchar *service,
560 const gchar *protocol,
562 GCancellable *cancellable,
568 g_return_val_if_fail (G_IS_RESOLVER (resolver), NULL);
569 g_return_val_if_fail (service != NULL, NULL);
570 g_return_val_if_fail (protocol != NULL, NULL);
571 g_return_val_if_fail (domain != NULL, NULL);
573 rrname = g_resolver_get_service_rrname (service, protocol, domain);
575 g_resolver_maybe_reload (resolver);
576 targets = G_RESOLVER_GET_CLASS (resolver)->
577 lookup_service (resolver, rrname, cancellable, error);
584 * g_resolver_lookup_service_async:
585 * @resolver: a #GResolver
586 * @service: the service type to look up (eg, "ldap")
587 * @protocol: the networking protocol to use for @service (eg, "tcp")
588 * @domain: the DNS domain to look up the service in
589 * @cancellable: (allow-none): a #GCancellable, or %NULL
590 * @callback: (scope async): callback to call after resolution completes
591 * @user_data: (closure): data for @callback
593 * Begins asynchronously performing a DNS SRV lookup for the given
594 * @service and @protocol in the given @domain, and eventually calls
595 * @callback, which must call g_resolver_lookup_service_finish() to
596 * get the final result. See g_resolver_lookup_service() for more
602 g_resolver_lookup_service_async (GResolver *resolver,
603 const gchar *service,
604 const gchar *protocol,
606 GCancellable *cancellable,
607 GAsyncReadyCallback callback,
612 g_return_if_fail (G_IS_RESOLVER (resolver));
613 g_return_if_fail (service != NULL);
614 g_return_if_fail (protocol != NULL);
615 g_return_if_fail (domain != NULL);
617 rrname = g_resolver_get_service_rrname (service, protocol, domain);
619 g_resolver_maybe_reload (resolver);
620 G_RESOLVER_GET_CLASS (resolver)->
621 lookup_service_async (resolver, rrname, cancellable, callback, user_data);
627 * g_resolver_lookup_service_finish:
628 * @resolver: a #GResolver
629 * @result: the result passed to your #GAsyncReadyCallback
630 * @error: return location for a #GError, or %NULL
632 * Retrieves the result of a previous call to
633 * g_resolver_lookup_service_async().
635 * If the DNS resolution failed, @error (if non-%NULL) will be set to
636 * a value from #GResolverError. If the operation was cancelled,
637 * @error will be set to %G_IO_ERROR_CANCELLED.
639 * Return value: (element-type GSrvTarget) (transfer full): a #GList of #GSrvTarget,
640 * or %NULL on error. See g_resolver_lookup_service() for more details.
645 g_resolver_lookup_service_finish (GResolver *resolver,
646 GAsyncResult *result,
649 g_return_val_if_fail (G_IS_RESOLVER (resolver), NULL);
651 if (G_IS_SIMPLE_ASYNC_RESULT (result))
653 GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
655 if (g_simple_async_result_propagate_error (simple, error))
659 return G_RESOLVER_GET_CLASS (resolver)->
660 lookup_service_finish (resolver, result, error);
664 * g_resolver_free_targets: (skip)
665 * @targets: a #GList of #GSrvTarget
667 * Frees @targets (which should be the return value from
668 * g_resolver_lookup_service() or g_resolver_lookup_service_finish()).
669 * (This is a convenience method; you can also simply free the
675 g_resolver_free_targets (GList *targets)
679 for (t = targets; t; t = t->next)
680 g_srv_target_free (t->data);
681 g_list_free (targets);
685 * g_resolver_error_quark:
687 * Gets the #GResolver Error Quark.
689 * Return value: a #GQuark.
694 g_resolver_error_quark (void)
696 return g_quark_from_static_string ("g-resolver-error-quark");
700 static GResolverError
701 g_resolver_error_from_addrinfo_error (gint err)
706 #if defined(EAI_NODATA) && (EAI_NODATA != EAI_NONAME)
710 return G_RESOLVER_ERROR_NOT_FOUND;
713 return G_RESOLVER_ERROR_TEMPORARY_FAILURE;
716 return G_RESOLVER_ERROR_INTERNAL;
720 struct addrinfo _g_resolver_addrinfo_hints;
722 /* Private method to process a getaddrinfo() response. */
724 _g_resolver_addresses_from_addrinfo (const char *hostname,
725 struct addrinfo *res,
730 GSocketAddress *sockaddr;
736 g_set_error (error, G_RESOLVER_ERROR,
737 g_resolver_error_from_addrinfo_error (gai_retval),
738 _("Error resolving '%s': %s"),
739 hostname, gai_strerror (gai_retval));
743 g_return_val_if_fail (res != NULL, NULL);
746 for (ai = res; ai; ai = ai->ai_next)
748 sockaddr = g_socket_address_new_from_native (ai->ai_addr, ai->ai_addrlen);
749 if (!sockaddr || !G_IS_INET_SOCKET_ADDRESS (sockaddr))
752 addr = g_object_ref (g_inet_socket_address_get_address ((GInetSocketAddress *)sockaddr));
753 addrs = g_list_prepend (addrs, addr);
754 g_object_unref (sockaddr);
757 return g_list_reverse (addrs);
760 /* Private method to set up a getnameinfo() request */
762 _g_resolver_address_to_sockaddr (GInetAddress *address,
763 struct sockaddr_storage *sa,
766 GSocketAddress *sockaddr;
768 sockaddr = g_inet_socket_address_new (address, 0);
769 g_socket_address_to_native (sockaddr, (struct sockaddr *)sa, sizeof (*sa), NULL);
770 *len = g_socket_address_get_native_size (sockaddr);
771 g_object_unref (sockaddr);
774 /* Private method to process a getnameinfo() response. */
776 _g_resolver_name_from_nameinfo (GInetAddress *address,
785 phys = g_inet_address_to_string (address);
786 g_set_error (error, G_RESOLVER_ERROR,
787 g_resolver_error_from_addrinfo_error (gni_retval),
788 _("Error reverse-resolving '%s': %s"),
789 phys ? phys : "(unknown)", gai_strerror (gni_retval));
794 return g_strdup (name);
797 #if defined(G_OS_UNIX)
798 /* Private method to process a res_query response into GSrvTargets */
800 _g_resolver_targets_from_res_query (const gchar *rrname,
809 guint16 type, qclass, rdlength, priority, weight, port;
817 GResolverError errnum;
820 if (len == 0 || herr == HOST_NOT_FOUND || herr == NO_DATA)
822 errnum = G_RESOLVER_ERROR_NOT_FOUND;
823 format = _("No service record for '%s'");
825 else if (herr == TRY_AGAIN)
827 errnum = G_RESOLVER_ERROR_TEMPORARY_FAILURE;
828 format = _("Temporarily unable to resolve '%s'");
832 errnum = G_RESOLVER_ERROR_INTERNAL;
833 format = _("Error resolving '%s'");
836 g_set_error (error, G_RESOLVER_ERROR, errnum, format, rrname);
842 header = (HEADER *)answer;
843 p = answer + sizeof (HEADER);
847 count = ntohs (header->qdcount);
848 while (count-- && p < end)
850 p += dn_expand (answer, end, p, namebuf, sizeof (namebuf));
855 count = ntohs (header->ancount);
856 while (count-- && p < end)
858 p += dn_expand (answer, end, p, namebuf, sizeof (namebuf));
860 GETSHORT (qclass, p);
862 ttl = ttl; /* To avoid -Wunused-but-set-variable */
863 GETSHORT (rdlength, p);
865 if (type != T_SRV || qclass != C_IN)
871 GETSHORT (priority, p);
872 GETSHORT (weight, p);
874 p += dn_expand (answer, end, p, namebuf, sizeof (namebuf));
876 target = g_srv_target_new (namebuf, port, priority, weight);
877 targets = g_list_prepend (targets, target);
880 return g_srv_target_list_sort (targets);
882 #elif defined(G_OS_WIN32)
883 /* Private method to process a DnsQuery response into GSrvTargets */
885 _g_resolver_targets_from_DnsQuery (const gchar *rrname,
894 if (status != ERROR_SUCCESS)
896 GResolverError errnum;
899 if (status == DNS_ERROR_RCODE_NAME_ERROR)
901 errnum = G_RESOLVER_ERROR_NOT_FOUND;
902 format = _("No service record for '%s'");
904 else if (status == DNS_ERROR_RCODE_SERVER_FAILURE)
906 errnum = G_RESOLVER_ERROR_TEMPORARY_FAILURE;
907 format = _("Temporarily unable to resolve '%s'");
911 errnum = G_RESOLVER_ERROR_INTERNAL;
912 format = _("Error resolving '%s'");
915 g_set_error (error, G_RESOLVER_ERROR, errnum, format, rrname);
920 for (rec = results; rec; rec = rec->pNext)
922 if (rec->wType != DNS_TYPE_SRV)
925 target = g_srv_target_new (rec->Data.SRV.pNameTarget,
927 rec->Data.SRV.wPriority,
928 rec->Data.SRV.wWeight);
929 targets = g_list_prepend (targets, target);
932 return g_srv_target_list_sort (targets);