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"
34 #include "gthreadedresolver.h"
45 * @short_description: Asynchronous and cancellable DNS resolver
48 * #GResolver provides cancellable synchronous and asynchronous DNS
49 * resolution, for hostnames (g_resolver_lookup_by_address(),
50 * g_resolver_lookup_by_name() and their async variants) and SRV
51 * (service) records (g_resolver_lookup_service()).
53 * #GNetworkAddress and #GNetworkService provide wrappers around
54 * #GResolver functionality that also implement #GSocketConnectable,
55 * making it easy to connect to a remote host/service.
63 static guint signals[LAST_SIGNAL] = { 0 };
65 struct _GResolverPrivate {
67 time_t resolv_conf_timestamp;
76 * The object that handles DNS resolution. Use g_resolver_get_default()
77 * to get the default resolver.
79 G_DEFINE_TYPE (GResolver, g_resolver, G_TYPE_OBJECT)
82 g_resolver_class_init (GResolverClass *resolver_class)
86 g_type_class_add_private (resolver_class, sizeof (GResolverPrivate));
88 /* Make sure _g_networking_init() has been called */
89 type = g_inet_address_get_type ();
90 (type); /* To avoid -Wunused-but-set-variable */
92 /* Initialize _g_resolver_addrinfo_hints */
94 _g_resolver_addrinfo_hints.ai_flags |= AI_ADDRCONFIG;
96 /* These two don't actually matter, they just get copied into the
97 * returned addrinfo structures (and then we ignore them). But if
98 * we leave them unset, we'll get back duplicate answers.
100 _g_resolver_addrinfo_hints.ai_socktype = SOCK_STREAM;
101 _g_resolver_addrinfo_hints.ai_protocol = IPPROTO_TCP;
105 * @resolver: a #GResolver
107 * Emitted when the resolver notices that the system resolver
108 * configuration has changed.
111 g_signal_new (I_("reload"),
114 G_STRUCT_OFFSET (GResolverClass, reload),
116 g_cclosure_marshal_VOID__VOID,
121 g_resolver_init (GResolver *resolver)
127 resolver->priv = G_TYPE_INSTANCE_GET_PRIVATE (resolver, G_TYPE_RESOLVER, GResolverPrivate);
130 if (stat (_PATH_RESCONF, &st) == 0)
131 resolver->priv->resolv_conf_timestamp = st.st_mtime;
135 static GResolver *default_resolver;
138 * g_resolver_get_default:
140 * Gets the default #GResolver. You should unref it when you are done
141 * with it. #GResolver may use its reference count as a hint about how
142 * many threads/processes, etc it should allocate for concurrent DNS
145 * Return value: (transfer full): the default #GResolver.
150 g_resolver_get_default (void)
152 if (!default_resolver)
153 default_resolver = g_object_new (G_TYPE_THREADED_RESOLVER, NULL);
155 return g_object_ref (default_resolver);
159 * g_resolver_set_default:
160 * @resolver: the new default #GResolver
162 * Sets @resolver to be the application's default resolver (reffing
163 * @resolver, and unreffing the previous default resolver, if any).
164 * Future calls to g_resolver_get_default() will return this resolver.
166 * This can be used if an application wants to perform any sort of DNS
167 * caching or "pinning"; it can implement its own #GResolver that
168 * calls the original default resolver for DNS operations, and
169 * implements its own cache policies on top of that, and then set
170 * itself as the default resolver for all later code to use.
175 g_resolver_set_default (GResolver *resolver)
177 if (default_resolver)
178 g_object_unref (default_resolver);
179 default_resolver = g_object_ref (resolver);
184 g_resolver_maybe_reload (GResolver *resolver)
189 if (stat (_PATH_RESCONF, &st) == 0)
191 if (st.st_mtime != resolver->priv->resolv_conf_timestamp)
193 resolver->priv->resolv_conf_timestamp = st.st_mtime;
195 g_signal_emit (resolver, signals[RELOAD], 0);
201 /* filter out duplicates, cf. https://bugzilla.gnome.org/show_bug.cgi?id=631379 */
203 remove_duplicates (GList *addrs)
209 /* TODO: if this is too slow (it's O(n^2) but n is typically really
210 * small), we can do something more clever but note that we must not
211 * change the order of elements...
213 for (l = addrs; l != NULL; l = l->next)
215 GInetAddress *address = G_INET_ADDRESS (l->data);
216 for (ll = l->next; ll != NULL; ll = lll)
218 GInetAddress *other_address = G_INET_ADDRESS (ll->data);
220 if (g_inet_address_equal (address, other_address))
222 g_object_unref (other_address);
223 /* we never return the first element */
224 g_warn_if_fail (g_list_delete_link (addrs, ll) == addrs);
232 * g_resolver_lookup_by_name:
233 * @resolver: a #GResolver
234 * @hostname: the hostname to look up
235 * @cancellable: (allow-none): a #GCancellable, or %NULL
236 * @error: return location for a #GError, or %NULL
238 * Synchronously resolves @hostname to determine its associated IP
239 * address(es). @hostname may be an ASCII-only or UTF-8 hostname, or
240 * the textual form of an IP address (in which case this just becomes
241 * a wrapper around g_inet_address_new_from_string()).
243 * On success, g_resolver_lookup_by_name() will return a #GList of
244 * #GInetAddress, sorted in order of preference and guaranteed to not
245 * contain duplicates. That is, if using the result to connect to
246 * @hostname, you should attempt to connect to the first address
247 * first, then the second if the first fails, etc. If you are using
248 * the result to listen on a socket, it is appropriate to add each
249 * result using e.g. g_socket_listener_add_address().
251 * If the DNS resolution fails, @error (if non-%NULL) will be set to a
252 * value from #GResolverError.
254 * If @cancellable is non-%NULL, it can be used to cancel the
255 * operation, in which case @error (if non-%NULL) will be set to
256 * %G_IO_ERROR_CANCELLED.
258 * If you are planning to connect to a socket on the resolved IP
259 * address, it may be easier to create a #GNetworkAddress and use its
260 * #GSocketConnectable interface.
262 * Return value: (element-type GInetAddress) (transfer full): a #GList
263 * of #GInetAddress, or %NULL on error. You
264 * must unref each of the addresses and free the list when you are
265 * done with it. (You can use g_resolver_free_addresses() to do this.)
270 g_resolver_lookup_by_name (GResolver *resolver,
271 const gchar *hostname,
272 GCancellable *cancellable,
277 gchar *ascii_hostname = NULL;
279 g_return_val_if_fail (G_IS_RESOLVER (resolver), NULL);
280 g_return_val_if_fail (hostname != NULL, NULL);
282 /* Check if @hostname is just an IP address */
283 addr = g_inet_address_new_from_string (hostname);
285 return g_list_append (NULL, addr);
287 if (g_hostname_is_non_ascii (hostname))
288 hostname = ascii_hostname = g_hostname_to_ascii (hostname);
290 g_resolver_maybe_reload (resolver);
291 addrs = G_RESOLVER_GET_CLASS (resolver)->
292 lookup_by_name (resolver, hostname, cancellable, error);
294 remove_duplicates (addrs);
296 g_free (ascii_hostname);
301 * g_resolver_lookup_by_name_async:
302 * @resolver: a #GResolver
303 * @hostname: the hostname to look up the address of
304 * @cancellable: (allow-none): a #GCancellable, or %NULL
305 * @callback: (scope async): callback to call after resolution completes
306 * @user_data: (closure): data for @callback
308 * Begins asynchronously resolving @hostname to determine its
309 * associated IP address(es), and eventually calls @callback, which
310 * must call g_resolver_lookup_by_name_finish() to get the result.
311 * See g_resolver_lookup_by_name() for more details.
316 g_resolver_lookup_by_name_async (GResolver *resolver,
317 const gchar *hostname,
318 GCancellable *cancellable,
319 GAsyncReadyCallback callback,
323 gchar *ascii_hostname = NULL;
325 g_return_if_fail (G_IS_RESOLVER (resolver));
326 g_return_if_fail (hostname != NULL);
328 /* Check if @hostname is just an IP address */
329 addr = g_inet_address_new_from_string (hostname);
332 GSimpleAsyncResult *simple;
334 simple = g_simple_async_result_new (G_OBJECT (resolver),
336 g_resolver_lookup_by_name_async);
338 g_simple_async_result_set_op_res_gpointer (simple, addr, g_object_unref);
339 g_simple_async_result_complete_in_idle (simple);
340 g_object_unref (simple);
344 if (g_hostname_is_non_ascii (hostname))
345 hostname = ascii_hostname = g_hostname_to_ascii (hostname);
347 g_resolver_maybe_reload (resolver);
348 G_RESOLVER_GET_CLASS (resolver)->
349 lookup_by_name_async (resolver, hostname, cancellable, callback, user_data);
351 g_free (ascii_hostname);
355 * g_resolver_lookup_by_name_finish:
356 * @resolver: a #GResolver
357 * @result: the result passed to your #GAsyncReadyCallback
358 * @error: return location for a #GError, or %NULL
360 * Retrieves the result of a call to
361 * g_resolver_lookup_by_name_async().
363 * If the DNS resolution failed, @error (if non-%NULL) will be set to
364 * a value from #GResolverError. If the operation was cancelled,
365 * @error will be set to %G_IO_ERROR_CANCELLED.
367 * Return value: (element-type GInetAddress) (transfer full): a #GList
368 * of #GInetAddress, or %NULL on error. See g_resolver_lookup_by_name()
374 g_resolver_lookup_by_name_finish (GResolver *resolver,
375 GAsyncResult *result,
380 g_return_val_if_fail (G_IS_RESOLVER (resolver), NULL);
382 if (G_IS_SIMPLE_ASYNC_RESULT (result))
384 GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
386 if (g_simple_async_result_propagate_error (simple, error))
389 /* Handle the stringified-IP-addr case */
390 if (g_simple_async_result_get_source_tag (simple) == g_resolver_lookup_by_name_async)
394 addr = g_simple_async_result_get_op_res_gpointer (simple);
395 return g_list_append (NULL, g_object_ref (addr));
399 addrs = G_RESOLVER_GET_CLASS (resolver)->
400 lookup_by_name_finish (resolver, result, error);
402 remove_duplicates (addrs);
408 * g_resolver_free_addresses: (skip)
409 * @addresses: a #GList of #GInetAddress
411 * Frees @addresses (which should be the return value from
412 * g_resolver_lookup_by_name() or g_resolver_lookup_by_name_finish()).
413 * (This is a convenience method; you can also simply free the results
419 g_resolver_free_addresses (GList *addresses)
423 for (a = addresses; a; a = a->next)
424 g_object_unref (a->data);
425 g_list_free (addresses);
429 * g_resolver_lookup_by_address:
430 * @resolver: a #GResolver
431 * @address: the address to reverse-resolve
432 * @cancellable: (allow-none): a #GCancellable, or %NULL
433 * @error: return location for a #GError, or %NULL
435 * Synchronously reverse-resolves @address to determine its
436 * associated hostname.
438 * If the DNS resolution fails, @error (if non-%NULL) will be set to
439 * a value from #GResolverError.
441 * If @cancellable is non-%NULL, it can be used to cancel the
442 * operation, in which case @error (if non-%NULL) will be set to
443 * %G_IO_ERROR_CANCELLED.
445 * Return value: a hostname (either ASCII-only, or in ASCII-encoded
446 * form), or %NULL on error.
451 g_resolver_lookup_by_address (GResolver *resolver,
452 GInetAddress *address,
453 GCancellable *cancellable,
456 g_return_val_if_fail (G_IS_RESOLVER (resolver), NULL);
457 g_return_val_if_fail (G_IS_INET_ADDRESS (address), NULL);
459 g_resolver_maybe_reload (resolver);
460 return G_RESOLVER_GET_CLASS (resolver)->
461 lookup_by_address (resolver, address, cancellable, error);
465 * g_resolver_lookup_by_address_async:
466 * @resolver: a #GResolver
467 * @address: the address to reverse-resolve
468 * @cancellable: (allow-none): a #GCancellable, or %NULL
469 * @callback: (scope async): callback to call after resolution completes
470 * @user_data: (closure): data for @callback
472 * Begins asynchronously reverse-resolving @address to determine its
473 * associated hostname, and eventually calls @callback, which must
474 * call g_resolver_lookup_by_address_finish() to get the final result.
479 g_resolver_lookup_by_address_async (GResolver *resolver,
480 GInetAddress *address,
481 GCancellable *cancellable,
482 GAsyncReadyCallback callback,
485 g_return_if_fail (G_IS_RESOLVER (resolver));
486 g_return_if_fail (G_IS_INET_ADDRESS (address));
488 g_resolver_maybe_reload (resolver);
489 G_RESOLVER_GET_CLASS (resolver)->
490 lookup_by_address_async (resolver, address, cancellable, callback, user_data);
494 * g_resolver_lookup_by_address_finish:
495 * @resolver: a #GResolver
496 * @result: the result passed to your #GAsyncReadyCallback
497 * @error: return location for a #GError, or %NULL
499 * Retrieves the result of a previous call to
500 * g_resolver_lookup_by_address_async().
502 * If the DNS resolution failed, @error (if non-%NULL) will be set to
503 * a value from #GResolverError. If the operation was cancelled,
504 * @error will be set to %G_IO_ERROR_CANCELLED.
506 * Return value: a hostname (either ASCII-only, or in ASCII-encoded
507 * form), or %NULL on error.
512 g_resolver_lookup_by_address_finish (GResolver *resolver,
513 GAsyncResult *result,
516 g_return_val_if_fail (G_IS_RESOLVER (resolver), NULL);
518 if (G_IS_SIMPLE_ASYNC_RESULT (result))
520 GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
522 if (g_simple_async_result_propagate_error (simple, error))
526 return G_RESOLVER_GET_CLASS (resolver)->
527 lookup_by_address_finish (resolver, result, error);
531 g_resolver_get_service_rrname (const char *service,
532 const char *protocol,
535 gchar *rrname, *ascii_domain = NULL;
537 if (g_hostname_is_non_ascii (domain))
538 domain = ascii_domain = g_hostname_to_ascii (domain);
540 rrname = g_strdup_printf ("_%s._%s.%s", service, protocol, domain);
542 g_free (ascii_domain);
547 * g_resolver_lookup_service:
548 * @resolver: a #GResolver
549 * @service: the service type to look up (eg, "ldap")
550 * @protocol: the networking protocol to use for @service (eg, "tcp")
551 * @domain: the DNS domain to look up the service in
552 * @cancellable: (allow-none): a #GCancellable, or %NULL
553 * @error: return location for a #GError, or %NULL
555 * Synchronously performs a DNS SRV lookup for the given @service and
556 * @protocol in the given @domain and returns an array of #GSrvTarget.
557 * @domain may be an ASCII-only or UTF-8 hostname. Note also that the
558 * @service and @protocol arguments <emphasis>do not</emphasis>
559 * include the leading underscore that appears in the actual DNS
562 * On success, g_resolver_lookup_service() will return a #GList of
563 * #GSrvTarget, sorted in order of preference. (That is, you should
564 * attempt to connect to the first target first, then the second if
565 * the first fails, etc.)
567 * If the DNS resolution fails, @error (if non-%NULL) will be set to
568 * a value from #GResolverError.
570 * If @cancellable is non-%NULL, it can be used to cancel the
571 * operation, in which case @error (if non-%NULL) will be set to
572 * %G_IO_ERROR_CANCELLED.
574 * If you are planning to connect to the service, it is usually easier
575 * to create a #GNetworkService and use its #GSocketConnectable
578 * Return value: (element-type GSrvTarget) (transfer full): a #GList of #GSrvTarget,
579 * or %NULL on error. You must free each of the targets and the list when you are
580 * done with it. (You can use g_resolver_free_targets() to do this.)
585 g_resolver_lookup_service (GResolver *resolver,
586 const gchar *service,
587 const gchar *protocol,
589 GCancellable *cancellable,
595 g_return_val_if_fail (G_IS_RESOLVER (resolver), NULL);
596 g_return_val_if_fail (service != NULL, NULL);
597 g_return_val_if_fail (protocol != NULL, NULL);
598 g_return_val_if_fail (domain != NULL, NULL);
600 rrname = g_resolver_get_service_rrname (service, protocol, domain);
602 g_resolver_maybe_reload (resolver);
603 targets = G_RESOLVER_GET_CLASS (resolver)->
604 lookup_service (resolver, rrname, cancellable, error);
611 * g_resolver_lookup_service_async:
612 * @resolver: a #GResolver
613 * @service: the service type to look up (eg, "ldap")
614 * @protocol: the networking protocol to use for @service (eg, "tcp")
615 * @domain: the DNS domain to look up the service in
616 * @cancellable: (allow-none): a #GCancellable, or %NULL
617 * @callback: (scope async): callback to call after resolution completes
618 * @user_data: (closure): data for @callback
620 * Begins asynchronously performing a DNS SRV lookup for the given
621 * @service and @protocol in the given @domain, and eventually calls
622 * @callback, which must call g_resolver_lookup_service_finish() to
623 * get the final result. See g_resolver_lookup_service() for more
629 g_resolver_lookup_service_async (GResolver *resolver,
630 const gchar *service,
631 const gchar *protocol,
633 GCancellable *cancellable,
634 GAsyncReadyCallback callback,
639 g_return_if_fail (G_IS_RESOLVER (resolver));
640 g_return_if_fail (service != NULL);
641 g_return_if_fail (protocol != NULL);
642 g_return_if_fail (domain != NULL);
644 rrname = g_resolver_get_service_rrname (service, protocol, domain);
646 g_resolver_maybe_reload (resolver);
647 G_RESOLVER_GET_CLASS (resolver)->
648 lookup_service_async (resolver, rrname, cancellable, callback, user_data);
654 * g_resolver_lookup_service_finish:
655 * @resolver: a #GResolver
656 * @result: the result passed to your #GAsyncReadyCallback
657 * @error: return location for a #GError, or %NULL
659 * Retrieves the result of a previous call to
660 * g_resolver_lookup_service_async().
662 * If the DNS resolution failed, @error (if non-%NULL) will be set to
663 * a value from #GResolverError. If the operation was cancelled,
664 * @error will be set to %G_IO_ERROR_CANCELLED.
666 * Return value: (element-type GSrvTarget) (transfer full): a #GList of #GSrvTarget,
667 * or %NULL on error. See g_resolver_lookup_service() for more details.
672 g_resolver_lookup_service_finish (GResolver *resolver,
673 GAsyncResult *result,
676 g_return_val_if_fail (G_IS_RESOLVER (resolver), NULL);
678 if (G_IS_SIMPLE_ASYNC_RESULT (result))
680 GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
682 if (g_simple_async_result_propagate_error (simple, error))
686 return G_RESOLVER_GET_CLASS (resolver)->
687 lookup_service_finish (resolver, result, error);
691 * g_resolver_free_targets: (skip)
692 * @targets: a #GList of #GSrvTarget
694 * Frees @targets (which should be the return value from
695 * g_resolver_lookup_service() or g_resolver_lookup_service_finish()).
696 * (This is a convenience method; you can also simply free the
702 g_resolver_free_targets (GList *targets)
706 for (t = targets; t; t = t->next)
707 g_srv_target_free (t->data);
708 g_list_free (targets);
712 * g_resolver_error_quark:
714 * Gets the #GResolver Error Quark.
716 * Return value: a #GQuark.
721 g_resolver_error_quark (void)
723 return g_quark_from_static_string ("g-resolver-error-quark");
727 static GResolverError
728 g_resolver_error_from_addrinfo_error (gint err)
733 #if defined(EAI_NODATA) && (EAI_NODATA != EAI_NONAME)
737 return G_RESOLVER_ERROR_NOT_FOUND;
740 return G_RESOLVER_ERROR_TEMPORARY_FAILURE;
743 return G_RESOLVER_ERROR_INTERNAL;
747 struct addrinfo _g_resolver_addrinfo_hints;
749 /* Private method to process a getaddrinfo() response. */
751 _g_resolver_addresses_from_addrinfo (const char *hostname,
752 struct addrinfo *res,
757 GSocketAddress *sockaddr;
763 g_set_error (error, G_RESOLVER_ERROR,
764 g_resolver_error_from_addrinfo_error (gai_retval),
765 _("Error resolving '%s': %s"),
766 hostname, gai_strerror (gai_retval));
770 g_return_val_if_fail (res != NULL, NULL);
773 for (ai = res; ai; ai = ai->ai_next)
775 sockaddr = g_socket_address_new_from_native (ai->ai_addr, ai->ai_addrlen);
776 if (!sockaddr || !G_IS_INET_SOCKET_ADDRESS (sockaddr))
779 addr = g_object_ref (g_inet_socket_address_get_address ((GInetSocketAddress *)sockaddr));
780 addrs = g_list_prepend (addrs, addr);
781 g_object_unref (sockaddr);
784 return g_list_reverse (addrs);
787 /* Private method to set up a getnameinfo() request */
789 _g_resolver_address_to_sockaddr (GInetAddress *address,
790 struct sockaddr_storage *sa,
793 GSocketAddress *sockaddr;
795 sockaddr = g_inet_socket_address_new (address, 0);
796 g_socket_address_to_native (sockaddr, (struct sockaddr *)sa, sizeof (*sa), NULL);
797 *len = g_socket_address_get_native_size (sockaddr);
798 g_object_unref (sockaddr);
801 /* Private method to process a getnameinfo() response. */
803 _g_resolver_name_from_nameinfo (GInetAddress *address,
812 phys = g_inet_address_to_string (address);
813 g_set_error (error, G_RESOLVER_ERROR,
814 g_resolver_error_from_addrinfo_error (gni_retval),
815 _("Error reverse-resolving '%s': %s"),
816 phys ? phys : "(unknown)", gai_strerror (gni_retval));
821 return g_strdup (name);
824 #if defined(G_OS_UNIX)
825 /* Private method to process a res_query response into GSrvTargets */
827 _g_resolver_targets_from_res_query (const gchar *rrname,
836 guint16 type, qclass, rdlength, priority, weight, port;
844 GResolverError errnum;
847 if (len == 0 || herr == HOST_NOT_FOUND || herr == NO_DATA)
849 errnum = G_RESOLVER_ERROR_NOT_FOUND;
850 format = _("No service record for '%s'");
852 else if (herr == TRY_AGAIN)
854 errnum = G_RESOLVER_ERROR_TEMPORARY_FAILURE;
855 format = _("Temporarily unable to resolve '%s'");
859 errnum = G_RESOLVER_ERROR_INTERNAL;
860 format = _("Error resolving '%s'");
863 g_set_error (error, G_RESOLVER_ERROR, errnum, format, rrname);
869 header = (HEADER *)answer;
870 p = answer + sizeof (HEADER);
874 count = ntohs (header->qdcount);
875 while (count-- && p < end)
877 p += dn_expand (answer, end, p, namebuf, sizeof (namebuf));
882 count = ntohs (header->ancount);
883 while (count-- && p < end)
885 p += dn_expand (answer, end, p, namebuf, sizeof (namebuf));
887 GETSHORT (qclass, p);
889 ttl = ttl; /* To avoid -Wunused-but-set-variable */
890 GETSHORT (rdlength, p);
892 if (type != T_SRV || qclass != C_IN)
898 GETSHORT (priority, p);
899 GETSHORT (weight, p);
901 p += dn_expand (answer, end, p, namebuf, sizeof (namebuf));
903 target = g_srv_target_new (namebuf, port, priority, weight);
904 targets = g_list_prepend (targets, target);
907 return g_srv_target_list_sort (targets);
909 #elif defined(G_OS_WIN32)
910 /* Private method to process a DnsQuery response into GSrvTargets */
912 _g_resolver_targets_from_DnsQuery (const gchar *rrname,
921 if (status != ERROR_SUCCESS)
923 GResolverError errnum;
926 if (status == DNS_ERROR_RCODE_NAME_ERROR)
928 errnum = G_RESOLVER_ERROR_NOT_FOUND;
929 format = _("No service record for '%s'");
931 else if (status == DNS_ERROR_RCODE_SERVER_FAILURE)
933 errnum = G_RESOLVER_ERROR_TEMPORARY_FAILURE;
934 format = _("Temporarily unable to resolve '%s'");
938 errnum = G_RESOLVER_ERROR_INTERNAL;
939 format = _("Error resolving '%s'");
942 g_set_error (error, G_RESOLVER_ERROR, errnum, format, rrname);
947 for (rec = results; rec; rec = rec->pNext)
949 if (rec->wType != DNS_TYPE_SRV)
952 target = g_srv_target_new (rec->Data.SRV.pNameTarget,
954 rec->Data.SRV.wPriority,
955 rec->Data.SRV.wWeight);
956 targets = g_list_prepend (targets, target);
959 return g_srv_target_list_sort (targets);