[glib/gresolver: 3/4] add GResolver, a glib-ish interface to DNS
- From: Dan Winship <danw src gnome org>
- To: svn-commits-list gnome org
- Subject: [glib/gresolver: 3/4] add GResolver, a glib-ish interface to DNS
- Date: Thu, 2 Apr 2009 13:51:42 -0400 (EDT)
commit 05507dce1f540581028e8be0e220e68c44fade2f
Author: Dan Winship <danw gnome org>
Date: Mon Dec 29 12:53:47 2008 -0500
add GResolver, a glib-ish interface to DNS
GResolver provides asynchronous (and synchronous-but-cancellable) APIs
for resolving hostnames, reverse-resolving IP addresses back to
hostnames, and resolving SRV records.
Part of http://bugzilla.gnome.org/show_bug.cgi?id=548466
---
configure.in | 25 +
docs/reference/gio/Makefile.am | 6 +-
docs/reference/gio/gio-docs.xml | 2 +
docs/reference/gio/gio-sections.txt | 52 ++
docs/reference/gio/gio.types | 1 +
gio/Makefile.am | 18 +-
gio/ginetaddress.c | 7 +-
gio/gio.h | 2 +
gio/gio.symbols | 57 ++
gio/gioenums.h | 14 +
gio/giotypes.h | 4 +-
gio/gnetworkingprivate.h | 32 +
gio/gresolver.c | 850 ++++++++++++++++++++
gio/gresolver.h | 159 ++++
gio/gsrvtarget.c | 332 ++++++++
gio/gsrvtarget.h | 52 ++
gio/gthreadedresolver.c | 617 ++++++++++++++
gio/gthreadedresolver.h | 50 ++
gio/gunixresolver.c | 433 ++++++++++
gio/gunixresolver.h | 53 ++
gio/gwin32resolver.c | 481 +++++++++++
gio/gwin32resolver.h | 49 ++
gio/libasyncns/Makefile.am | 15 +
gio/libasyncns/README | 7 +
gio/libasyncns/asyncns.c | 1498 +++++++++++++++++++++++++++++++++++
gio/libasyncns/asyncns.h | 163 ++++
gio/libasyncns/g-asyncns.h | 28 +
gio/libasyncns/update.sh | 20 +
gio/pltcheck.sh | 2 +-
gio/tests/.gitignore | 1 +
gio/tests/Makefile.am | 8 +-
gio/tests/resolver.c | 377 +++++++++
32 files changed, 5405 insertions(+), 10 deletions(-)
diff --git a/configure.in b/configure.in
index 1ace2b6..2541020 100644
--- a/configure.in
+++ b/configure.in
@@ -974,6 +974,30 @@ if $glib_failed ; then
AC_MSG_ERROR([Could not determine values for AF_INET* constants])
fi
+# For gio/libasyncns
+if test $glib_native_win32 = no; then
+ AC_CHECK_FUNCS(strndup setresuid setreuid)
+ AC_CHECK_HEADERS(sys/prctl.h arpa/nameser_compat.h)
+ AC_CHECK_FUNC(res_query, ,
+ [AC_CHECK_LIB(resolv, res_query, [ LIBASYNCNS_LIBADD="-lresolv" ],
+ [ save_libs="$LIBS"
+ LIBS="-lresolv $LIBS"
+ AC_MSG_CHECKING([for res_query in -lresolv (alternate version)])
+ AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM([[#include <resolv.h>]], [[res_query(0,0,0,0,0)]])],
+ [ AC_MSG_RESULT(yes)
+ LIBASYNCNS_LIBADD="-lresolv" ],
+ [ AC_MSG_RESULT(no)
+ AC_CHECK_LIB(bind, res_query,
+ [ LIBASYNCNS_LIBADD="-lbind" ],
+ [ AC_MSG_ERROR(res_query not found) ] ) ] )
+ LIBS="$save_libs"
+ ] )
+ ]
+ )
+ AC_SUBST(LIBASYNCNS_LIBADD)
+fi
+
dnl
dnl if statfs() takes 2 arguments (Posix) or 4 (Solaris)
dnl
@@ -3384,6 +3408,7 @@ gthread/Makefile
gio/Makefile
gio/xdgmime/Makefile
gio/inotify/Makefile
+gio/libasyncns/Makefile
gio/fen/Makefile
gio/fam/Makefile
gio/win32/Makefile
diff --git a/docs/reference/gio/Makefile.am b/docs/reference/gio/Makefile.am
index 43e003f..1cd0cdc 100644
--- a/docs/reference/gio/Makefile.am
+++ b/docs/reference/gio/Makefile.am
@@ -43,11 +43,14 @@ IGNORE_HFILES= \
glocalvfs.h \
gnativevolumemonitor.h \
gpollfilemonitor.h \
+ gthreadedresolver.h \
gunionvolumemonitor.h \
gunixdrive.h \
+ gunixresolver.h \
gunixvolume.h \
gvolumeprivate.h \
gwin32appinfo.h \
+ gwin32resolver.h \
inotify-diag.h \
inotify-helper.h \
inotify-kernel.h \
@@ -85,7 +88,8 @@ GTKDOC_LIBS = \
$(NULL)
# Extra options to supply to gtkdoc-mkdb
-MKDB_OPTIONS = --output-format=xml --sgml-mode --name-space=g
+MKDB_OPTIONS = --output-format=xml --sgml-mode --name-space=g \
+ --ignore-files=libasyncns
# Images to copy into HTML directory
HTML_IMAGES = \
diff --git a/docs/reference/gio/gio-docs.xml b/docs/reference/gio/gio-docs.xml
index 8872ed7..223127c 100644
--- a/docs/reference/gio/gio-docs.xml
+++ b/docs/reference/gio/gio-docs.xml
@@ -92,10 +92,12 @@
</chapter>
<chapter id="networking">
<title>Networking</title>
+ <xi:include href="xml/gresolver.xml"/>
<xi:include href="xml/ginetaddress.xml"/>
<xi:include href="xml/gsocketaddress.xml"/>
<xi:include href="xml/ginetsocketaddress.xml"/>
<xi:include href="xml/gunixsocketaddress.xml"/>
+ <xi:include href="xml/gsrvtarget.xml"/>
</chapter>
<chapter id="utils">
<title>Utilities</title>
diff --git a/docs/reference/gio/gio-sections.txt b/docs/reference/gio/gio-sections.txt
index 884477e..d0f744d 100644
--- a/docs/reference/gio/gio-sections.txt
+++ b/docs/reference/gio/gio-sections.txt
@@ -1402,3 +1402,55 @@ G_UNIX_SOCKET_ADDRESS_GET_CLASS
<SUBSECTION Private>
g_unix_socket_address_get_type
</SECTION>
+
+<SECTION>
+<FILE>gresolver</FILE>
+<TITLE>GResolver</TITLE>
+GResolver
+g_resolver_get_default
+g_resolver_set_default
+g_resolver_lookup_by_name
+g_resolver_lookup_by_name_async
+g_resolver_lookup_by_name_finish
+g_resolver_free_addresses
+g_resolver_lookup_by_address
+g_resolver_lookup_by_address_async
+g_resolver_lookup_by_address_finish
+g_resolver_lookup_service
+g_resolver_lookup_service_async
+g_resolver_lookup_service_finish
+g_resolver_free_targets
+<SUBSECTION>
+G_RESOLVER_ERROR
+GResolverError
+<SUBSECTION Standard>
+GResolverClass
+G_IS_RESOLVER
+G_IS_RESOLVER_CLASS
+G_RESOLVER
+G_RESOLVER_CLASS
+G_RESOLVER_GET_CLASS
+G_TYPE_RESOLVER
+<SUBSECTION Private>
+g_resolver_get_type
+g_resolver_error_quark
+</SECTION>
+
+<SECTION>
+<FILE>gsrvtarget</FILE>
+<TITLE>GSrvTarget</TITLE>
+GSrvTarget
+g_srv_target_new
+g_srv_target_copy
+g_srv_target_free
+g_srv_target_get_hostname
+g_srv_target_get_port
+g_srv_target_get_priority
+g_srv_target_get_weight
+g_srv_target_get_expires
+g_srv_target_array_sort
+<SUBSECTION Standard>
+G_TYPE_SRV_TARGET
+<SUBSECTION Private>
+g_srv_target_get_type
+</SECTION>
diff --git a/docs/reference/gio/gio.types b/docs/reference/gio/gio.types
index cedae87..54d834d 100644
--- a/docs/reference/gio/gio.types
+++ b/docs/reference/gio/gio.types
@@ -55,6 +55,7 @@ g_native_volume_monitor_get_type
g_output_stream_get_type
g_output_stream_splice_flags_get_type
g_password_save_get_type
+g_resolver_get_type
g_seekable_get_type
g_simple_async_result_get_type
g_socket_address_get_type
diff --git a/gio/Makefile.am b/gio/Makefile.am
index 53b30c2..e889ecb 100644
--- a/gio/Makefile.am
+++ b/gio/Makefile.am
@@ -5,7 +5,7 @@ NULL =
SUBDIRS=
if OS_UNIX
-SUBDIRS += xdgmime
+SUBDIRS += libasyncns xdgmime
endif
if OS_WIN32_AND_DLL_COMPILATION
@@ -125,13 +125,15 @@ endif
if OS_UNIX
appinfo_sources += gdesktopappinfo.c gdesktopappinfo.h
-platform_libadd += xdgmime/libxdgmime.la
-platform_deps += xdgmime/libxdgmime.la
+platform_libadd += libasyncns/libasyncns.la xdgmime/libxdgmime.la
+platform_deps += libasyncns/libasyncns.la xdgmime/libxdgmime.la
unix_sources = \
gunixmount.c \
gunixmount.h \
gunixmounts.c \
gunixmounts.h \
+ gunixresolver.c \
+ gunixresolver.h \
gunixsocketaddress.c \
gunixvolume.c \
gunixvolume.h \
@@ -154,10 +156,12 @@ endif
if OS_WIN32
appinfo_sources += gwin32appinfo.c gwin32appinfo.h
-platform_libadd += -lshlwapi -lws2_32
+platform_libadd += -lshlwapi -lws2_32 -ldnsapi
win32_sources = \
gwin32mount.c \
gwin32mount.h \
+ gwin32resolver.c \
+ gwin32resolver.h \
gwin32volumemonitor.c \
gwin32volumemonitor.h \
$(NULL)
@@ -217,10 +221,14 @@ libgio_2_0_la_SOURCES = \
goutputstream.c \
gpollfilemonitor.c \
gpollfilemonitor.h \
+ gresolver.c \
gseekable.c \
gsimpleasyncresult.c \
gsocketaddress.c \
+ gsrvtarget.c \
gthemedicon.c \
+ gthreadedresolver.c \
+ gthreadedresolver.h \
gunionvolumemonitor.c \
gunionvolumemonitor.h \
gvfs.c \
@@ -321,9 +329,11 @@ gio_headers = \
gmountoperation.h \
gnativevolumemonitor.h \
goutputstream.h \
+ gresolver.h \
gseekable.h \
gsimpleasyncresult.h \
gsocketaddress.h \
+ gsrvtarget.h \
gthemedicon.h \
gvfs.h \
gvolume.h \
diff --git a/gio/ginetaddress.c b/gio/ginetaddress.c
index b43cab7..aa9d574 100644
--- a/gio/ginetaddress.c
+++ b/gio/ginetaddress.c
@@ -36,7 +36,12 @@
* SECTION:ginetaddress
* @short_description: An IPv4/IPv6 address
*
- * #GInetAddress represents an IPv4 or IPv6 internet address.
+ * #GInetAddress represents an IPv4 or IPv6 internet address. Use
+ * g_resolver_lookup_by_name() or g_resolver_lookup_by_name_async() to
+ * look up the #GInetAddress for a hostname. Use
+ * g_resolver_lookup_by_address() or
+ * g_resolver_lookup_by_address_async() to look up the hostname for a
+ * #GInetAddress.
*
* To actually connect to a remote host, you will need a
* #GInetSocketAddress (which includes a #GInetAddress as well as a
diff --git a/gio/gio.h b/gio/gio.h
index 6e809ba..779ce40 100644
--- a/gio/gio.h
+++ b/gio/gio.h
@@ -64,9 +64,11 @@
#include <gio/gmountoperation.h>
#include <gio/gnativevolumemonitor.h>
#include <gio/goutputstream.h>
+#include <gio/gresolver.h>
#include <gio/gseekable.h>
#include <gio/gsimpleasyncresult.h>
#include <gio/gsocketaddress.h>
+#include <gio/gsrvtarget.h>
#include <gio/gthemedicon.h>
#include <gio/gvfs.h>
#include <gio/gvolume.h>
diff --git a/gio/gio.symbols b/gio/gio.symbols
index ac6c1c2..f792a8a 100644
--- a/gio/gio.symbols
+++ b/gio/gio.symbols
@@ -832,6 +832,7 @@ g_ask_password_flags_get_type G_GNUC_CONST
g_password_save_get_type G_GNUC_CONST
g_emblem_origin_get_type G_GNUC_CONST
g_socket_family_get_type G_GNUC_CONST
+g_resolver_error_get_type G_GNUC_CONST
#endif
#endif
@@ -906,3 +907,59 @@ g_socket_address_get_native_size
g_socket_address_to_native
#endif
#endif
+
+#if IN_HEADER(__G_RESOLVER_H__)
+#if IN_FILE(__G_RESOLVER_C__)
+g_resolver_error_quark
+g_resolver_free_addresses
+g_resolver_free_targets
+g_resolver_get_type G_GNUC_CONST
+g_resolver_get_default
+g_resolver_set_default
+g_resolver_lookup_by_name
+g_resolver_lookup_by_name_async
+g_resolver_lookup_by_name_finish
+g_resolver_lookup_by_address
+g_resolver_lookup_by_address_async
+g_resolver_lookup_by_address_finish
+g_resolver_lookup_service
+g_resolver_lookup_service_async
+g_resolver_lookup_service_finish
+#endif
+#endif
+
+#if IN_HEADER(__G_THREADED_RESOLVER_H__)
+#if IN_FILE(__G_THREADED_RESOLVER_C__)
+g_threaded_resolver_get_type G_GNUC_CONST
+#endif
+#endif
+
+#if IN_HEADER(__G_UNIX_RESOLVER_H__)
+#if IN_FILE(__G_UNIX_RESOLVER_C__)
+#ifdef G_OS_UNIX
+g_unix_resolver_get_type G_GNUC_CONST
+#endif
+#endif
+#endif
+
+#if IN_HEADER(__G_WIN32_RESOLVER_H__)
+#if IN_FILE(__G_WIN32_RESOLVER_C__)
+#ifdef G_OS_WIN32
+g_win32_resolver_get_type G_GNUC_CONST
+#endif
+#endif
+#endif
+
+#if IN_HEADER(__G_SRV_TARGET_H__)
+#if IN_FILE(__G_SRV_TARGET_C__)
+g_srv_target_get_type G_GNUC_CONST
+g_srv_target_new
+g_srv_target_copy
+g_srv_target_free
+g_srv_target_get_hostname
+g_srv_target_get_port
+g_srv_target_get_priority
+g_srv_target_get_weight
+g_srv_target_list_sort
+#endif
+#endif
diff --git a/gio/gioenums.h b/gio/gioenums.h
index e6e6dfc..e9f440b 100644
--- a/gio/gioenums.h
+++ b/gio/gioenums.h
@@ -476,6 +476,20 @@ typedef enum {
G_EMBLEM_ORIGIN_TAG
} GEmblemOrigin;
+/**
+ * GResolverError:
+ * @G_RESOLVER_ERROR_NOT_FOUND: the requested name/address/service was not found
+ * @G_RESOLVER_ERROR_TEMPORARY_FAILURE: the requested information could not be looked up due to a network error or similar problem
+ * @G_RESOLVER_ERROR_INTERNAL: unknown error
+ *
+ * An error code used with %G_RESOLVER_ERROR in a #GError returned
+ * from a #GResolver routine.
+ */
+typedef enum {
+ G_RESOLVER_ERROR_NOT_FOUND,
+ G_RESOLVER_ERROR_TEMPORARY_FAILURE,
+ G_RESOLVER_ERROR_INTERNAL
+} GResolverError;
/**
* GSocketFamily:
diff --git a/gio/giotypes.h b/gio/giotypes.h
index 6ea1c1b..1e44e4c 100644
--- a/gio/giotypes.h
+++ b/gio/giotypes.h
@@ -99,12 +99,12 @@ typedef struct _GMemoryOutputStream GMemoryOutputStream;
**/
typedef struct _GMount GMount; /* Dummy typedef */
typedef struct _GMountOperation GMountOperation;
-typedef struct _GNetworkAddress GNetworkAddress;
-typedef struct _GNetworkService GNetworkService;
typedef struct _GOutputStream GOutputStream;
+typedef struct _GResolver GResolver;
typedef struct _GSeekable GSeekable;
typedef struct _GSimpleAsyncResult GSimpleAsyncResult;
typedef struct _GSocketAddress GSocketAddress;
+typedef struct _GSrvTarget GSrvTarget;
typedef struct _GThemedIcon GThemedIcon;
typedef struct _GVfs GVfs; /* Dummy typedef */
diff --git a/gio/gnetworkingprivate.h b/gio/gnetworkingprivate.h
index a90d264..c41f598 100644
--- a/gio/gnetworkingprivate.h
+++ b/gio/gnetworkingprivate.h
@@ -50,4 +50,36 @@
#endif
+G_BEGIN_DECLS
+
+extern struct addrinfo _g_resolver_addrinfo_hints;
+
+GList *_g_resolver_addresses_from_addrinfo (const char *hostname,
+ struct addrinfo *res,
+ gint gai_retval,
+ GError **error);
+
+void _g_resolver_address_to_sockaddr (GInetAddress *address,
+ struct sockaddr_storage *sa,
+ gsize *sa_len);
+char *_g_resolver_name_from_nameinfo (GInetAddress *address,
+ const gchar *name,
+ gint gni_retval,
+ GError **error);
+
+#if defined(G_OS_UNIX)
+GList *_g_resolver_targets_from_res_query (const gchar *rrname,
+ guchar *answer,
+ gint len,
+ gint herr,
+ GError **error);
+#elif defined(G_OS_WIN32)
+GList *_g_resolver_targets_from_DnsQuery (const gchar *rrname,
+ DNS_STATUS status,
+ DNS_RECORD *results,
+ GError **error);
+#endif
+
+G_END_DECLS
+
#endif /* __G_NETWORKINGPRIVATE_H__ */
diff --git a/gio/gresolver.c b/gio/gresolver.c
new file mode 100644
index 0000000..f529e5c
--- /dev/null
+++ b/gio/gresolver.c
@@ -0,0 +1,850 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "config.h"
+#include <glib.h>
+#include "glibintl.h"
+
+#include "gresolver.h"
+#include "gnetworkingprivate.h"
+#include "gasyncresult.h"
+#include "ginetaddress.h"
+#include "ginetsocketaddress.h"
+#include "gsimpleasyncresult.h"
+#include "gsrvtarget.h"
+
+#ifdef G_OS_UNIX
+#include "gunixresolver.h"
+#endif
+#ifdef G_OS_WIN32
+#include "gwin32resolver.h"
+#endif
+
+#include <stdlib.h>
+
+#include "gioalias.h"
+
+/**
+ * SECTION:gresolver
+ * @short_description: Asynchronous and cancellable DNS resolver
+ * @include: gio/gio.h
+ *
+ * #GResolver provides cancellable synchronous and asynchronous DNS
+ * resolution, for hostnames (g_resolver_lookup_by_address(),
+ * g_resolver_lookup_by_name() and their async variants) and SRV
+ * (service) records (g_resolver_lookup_service()).
+ **/
+
+/**
+ * GResolver:
+ *
+ * The object that handles DNS resolution. Use g_resolver_get_default()
+ * to get the default resolver.
+ */
+G_DEFINE_TYPE (GResolver, g_resolver, G_TYPE_OBJECT)
+
+static void
+g_resolver_class_init (GResolverClass *resolver_class)
+{
+ /* Make sure _g_networking_init() has been called */
+ (void) g_inet_address_get_type ();
+
+ /* Initialize _g_resolver_addrinfo_hints */
+#ifdef AI_ADDRCONFIG
+ _g_resolver_addrinfo_hints.ai_flags |= AI_ADDRCONFIG;
+#endif
+ /* These two don't actually matter, they just get copied into the
+ * returned addrinfo structures (and then we ignore them). But if
+ * we leave them unset, we'll get back duplicate answers.
+ */
+ _g_resolver_addrinfo_hints.ai_socktype = SOCK_STREAM;
+ _g_resolver_addrinfo_hints.ai_protocol = IPPROTO_TCP;
+}
+
+static void
+g_resolver_init (GResolver *resolver)
+{
+ ;
+}
+
+static GResolver *default_resolver;
+
+/**
+ * g_resolver_get_default:
+ *
+ * Gets the default #GResolver. You should unref it when you are done
+ * with it. #GResolver may use its reference count as a hint about how
+ * many threads/processes, etc it should allocate for concurrent DNS
+ * resolutions.
+ *
+ * Return value: the #GResolver.
+ *
+ * Since: 2.20
+ **/
+GResolver *
+g_resolver_get_default (void)
+{
+ if (!default_resolver)
+ {
+ if (g_thread_supported ())
+ default_resolver = g_object_new (G_TYPE_THREADED_RESOLVER, NULL);
+ else
+ {
+#if defined(G_OS_UNIX)
+ default_resolver = g_object_new (G_TYPE_UNIX_RESOLVER, NULL);
+#elif defined(G_OS_WIN32)
+ default_resolver = g_object_new (G_TYPE_WIN32_RESOLVER, NULL);
+#endif
+ }
+ }
+
+ return g_object_ref (default_resolver);
+}
+
+/**
+ * g_resolver_set_default:
+ * @resolver: the new default #GResolver
+ *
+ * Sets @resolver to be the application's default resolver (reffing
+ * @resolver, and unreffing the previous default resolver, if any).
+ * Future calls to g_resolver_get_default() will return this resolver.
+ *
+ * This can be used if an applications wants to perform any sort of
+ * DNS caching or "pinning"; it can implement its own #GResolver that
+ * calls the original default resolver for DNS operations, and
+ * implements its own cache policies on top of that, and then set
+ * itself as the default resolver for all later code to use.
+ **/
+void
+g_resolver_set_default (GResolver *resolver)
+{
+ if (default_resolver)
+ g_object_unref (default_resolver);
+ default_resolver = g_object_ref (resolver);
+}
+
+
+/**
+ * g_resolver_lookup_by_name:
+ * @resolver: a #GResolver
+ * @hostname: the hostname to look up
+ * @cancellable: a #GCancellable, or %NULL
+ * @error: return location for a #GError, or %NULL
+ *
+ * Synchronously resolves @hostname to determine its associated IP
+ * address(es). @hostname may be an ASCII-only or UTF-8 hostname, or
+ * the textual form of an IP address (in which case this just becomes
+ * a wrapper around g_inet_address_new_from_string()).
+ *
+ * On success, g_resolver_lookup_by_name() will return a #GList of
+ * #GInetAddress, sorted in order of preference. (That is, you should
+ * attempt to connect to the first address first, then the second if
+ * the first fails, etc.) You must unref each address and free the
+ * list when you are done with it.
+ *
+ * If the DNS resolution fails, @error (if non-%NULL) will be set to a
+ * value from #GResolverError.
+ *
+ * If @cancellable is non-%NULL, it can be used to cancel the
+ * operation, in which case @error (if non-%NULL) will be set to
+ * %G_IO_ERROR_CANCELLED.
+ *
+ * Return value: a #GList of #GInetAddress, or %NULL on error. You
+ * must unref each of the addresses and free the list when you are
+ * done with it. (You can use g_resolver_free_addresses() to do this.)
+ *
+ * Since: 2.20
+ **/
+GList *
+g_resolver_lookup_by_name (GResolver *resolver,
+ const gchar *hostname,
+ GCancellable *cancellable,
+ GError **error)
+{
+ GInetAddress *addr;
+ GList *addrs;
+ gchar *ascii_hostname = NULL;
+
+ g_return_val_if_fail (G_IS_RESOLVER (resolver), NULL);
+ g_return_val_if_fail (hostname != NULL, NULL);
+
+ /* Check if @hostname is just an IP address */
+ addr = g_inet_address_new_from_string (hostname);
+ if (addr)
+ return g_list_append (NULL, addr);
+
+ if (g_hostname_is_non_ascii (hostname))
+ hostname = ascii_hostname = g_hostname_to_ascii (hostname);
+
+ addrs = G_RESOLVER_GET_CLASS (resolver)->
+ lookup_by_name (resolver, hostname, cancellable, error);
+
+ g_free (ascii_hostname);
+ return addrs;
+}
+
+/**
+ * g_resolver_lookup_by_name_async:
+ * @resolver: a #GResolver
+ * @hostname: the hostname to look up the address of
+ * @cancellable: a #GCancellable, or %NULL
+ * @callback: callback to call after resolution completes
+ * @user_data: data for @callback
+ *
+ * Begins asynchronously resolving @hostname to determine its
+ * associated IP address(es), and eventually calls @callback, which
+ * must call g_resolver_lookup_by_name_finish() to get the result. See
+ * g_resolver_lookup_by_name() for more details.
+ *
+ * Since: 2.20
+ **/
+void
+g_resolver_lookup_by_name_async (GResolver *resolver,
+ const gchar *hostname,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GInetAddress *addr;
+ gchar *ascii_hostname = NULL;
+
+ g_return_if_fail (G_IS_RESOLVER (resolver));
+ g_return_if_fail (hostname != NULL);
+
+ /* Check if @hostname is just an IP address */
+ addr = g_inet_address_new_from_string (hostname);
+ if (addr)
+ {
+ GSimpleAsyncResult *simple;
+ GList *addrs;
+
+ simple = g_simple_async_result_new (G_OBJECT (resolver),
+ callback, user_data,
+ g_resolver_lookup_by_name_async);
+
+ addrs = g_list_append (NULL, addr);
+ g_simple_async_result_set_op_res_gpointer (simple, addrs, (GDestroyNotify)g_resolver_free_addresses);
+ g_simple_async_result_complete_in_idle (simple);
+ g_object_unref (simple);
+ return;
+ }
+
+ if (g_hostname_is_non_ascii (hostname))
+ hostname = ascii_hostname = g_hostname_to_ascii (hostname);
+
+ G_RESOLVER_GET_CLASS (resolver)->
+ lookup_by_name_async (resolver, hostname, cancellable, callback, user_data);
+
+ g_free (ascii_hostname);
+}
+
+/**
+ * g_resolver_lookup_by_name_finish:
+ * @resolver: a #GResolver
+ * @result: the result passed to your #GAsyncReadyCallback
+ * @error: return location for a #GError, or %NULL
+ *
+ * Retrieves the result of a call to
+ * g_resolver_lookup_by_name_async().
+ *
+ * If the DNS resolution failed, @error (if non-%NULL) will be set to
+ * a value from #GResolverError. If the operation was cancelled,
+ * @error will be set to %G_IO_ERROR_CANCELLED.
+ *
+ * Return value: a #GList of #GInetAddress, or %NULL on error. See
+ * g_resolver_lookup_by_name() for more details.
+ *
+ * Since: 2.20
+ **/
+GList *
+g_resolver_lookup_by_name_finish (GResolver *resolver,
+ GAsyncResult *result,
+ GError **error)
+{
+ g_return_val_if_fail (G_IS_RESOLVER (resolver), NULL);
+
+ if (G_IS_SIMPLE_ASYNC_RESULT (result))
+ {
+ GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
+
+ if (g_simple_async_result_propagate_error (simple, error))
+ return NULL;
+
+ /* Handle the stringified-IP-addr case */
+ if (g_simple_async_result_get_source_tag (simple) == g_resolver_lookup_by_name_async)
+ {
+ GList *addrs;
+
+ addrs = g_simple_async_result_get_op_res_gpointer (simple);
+ g_simple_async_result_set_op_res_gpointer (simple, NULL, NULL);
+ return addrs;
+ }
+ }
+
+ return G_RESOLVER_GET_CLASS (resolver)->
+ lookup_by_name_finish (resolver, result, error);
+}
+
+/**
+ * g_resolver_free_addresses:
+ * @addresses: a #GList of #GInetAddress
+ *
+ * Frees @addresses (which should be the return value from
+ * g_resolver_lookup_by_name() or g_resolver_lookup_by_name_finish()).
+ * (This is a convenience method; you can also simply free the results
+ * by hand.)
+ **/
+void
+g_resolver_free_addresses (GList *addresses)
+{
+ GList *a;
+
+ for (a = addresses; a; a = a->next)
+ g_object_unref (a->data);
+ g_list_free (addresses);
+}
+
+/**
+ * g_resolver_lookup_by_address:
+ * @resolver: a #GResolver
+ * @address: the address to reverse-resolve
+ * @cancellable: a #GCancellable, or %NULL
+ * @error: return location for a #GError, or %NULL
+ *
+ * Synchronously reverse-resolves @address to determine its
+ * associated hostname.
+ *
+ * If the DNS resolution fails, @error (if non-%NULL) will be set to
+ * a value from #GResolverError.
+ *
+ * If @cancellable is non-%NULL, it can be used to cancel the
+ * operation, in which case @error (if non-%NULL) will be set to
+ * %G_IO_ERROR_CANCELLED.
+ *
+ * Return value: a hostname (either ASCII-only, or in ASCII-encoded
+ * form), or %NULL on error.
+ *
+ * Since: 2.20
+ **/
+gchar *
+g_resolver_lookup_by_address (GResolver *resolver,
+ GInetAddress *address,
+ GCancellable *cancellable,
+ GError **error)
+{
+ g_return_val_if_fail (G_IS_RESOLVER (resolver), NULL);
+ g_return_val_if_fail (G_IS_INET_ADDRESS (address), NULL);
+
+ return G_RESOLVER_GET_CLASS (resolver)->
+ lookup_by_address (resolver, address, cancellable, error);
+}
+
+/**
+ * g_resolver_lookup_by_address_async:
+ * @resolver: a #GResolver
+ * @address: the address to reverse-resolve
+ * @cancellable: a #GCancellable, or %NULL
+ * @callback: callback to call after resolution completes
+ * @user_data: data for @callback
+ *
+ * Begins asynchronously reverse-resolving @address to determine its
+ * associated hostname, and eventually calls @callback, which must
+ * call g_resolver_lookup_by_address_finish() to get the final result.
+ *
+ * Since: 2.20
+ **/
+void
+g_resolver_lookup_by_address_async (GResolver *resolver,
+ GInetAddress *address,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ g_return_if_fail (G_IS_RESOLVER (resolver));
+ g_return_if_fail (G_IS_INET_ADDRESS (address));
+
+ G_RESOLVER_GET_CLASS (resolver)->
+ lookup_by_address_async (resolver, address, cancellable, callback, user_data);
+}
+
+/**
+ * g_resolver_lookup_by_address_finish:
+ * @resolver: a #GResolver
+ * @result: the result passed to your #GAsyncReadyCallback
+ * @error: return location for a #GError, or %NULL
+ *
+ * Retrieves the result of a previous call to
+ * g_resolver_lookup_by_address_async().
+ *
+ * If the DNS resolution failed, @error (if non-%NULL) will be set to
+ * a value from #GResolverError. If the operation was cancelled,
+ * @error will be set to %G_IO_ERROR_CANCELLED.
+ *
+ * Return value: a hostname (either ASCII-only, or in ASCII-encoded
+ * form), or %NULL on error.
+ *
+ * Since: 2.20
+ **/
+gchar *
+g_resolver_lookup_by_address_finish (GResolver *resolver,
+ GAsyncResult *result,
+ GError **error)
+{
+ g_return_val_if_fail (G_IS_RESOLVER (resolver), NULL);
+
+ if (G_IS_SIMPLE_ASYNC_RESULT (result))
+ {
+ GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
+
+ if (g_simple_async_result_propagate_error (simple, error))
+ return NULL;
+ }
+
+ return G_RESOLVER_GET_CLASS (resolver)->
+ lookup_by_address_finish (resolver, result, error);
+}
+
+static gchar *
+g_resolver_get_service_rrname (const char *service,
+ const char *protocol,
+ const char *domain)
+{
+ gchar *rrname, *ascii_domain = NULL;
+
+ if (g_hostname_is_non_ascii (domain))
+ domain = ascii_domain = g_hostname_to_ascii (domain);
+
+ rrname = g_strdup_printf ("_%s._%s.%s", service, protocol, domain);
+
+ g_free (ascii_domain);
+ return rrname;
+}
+
+/**
+ * g_resolver_lookup_service:
+ * @resolver: a #GResolver
+ * @service: the service type to look up (eg, "ldap")
+ * @protocol: the networking protocol to use for @service (eg, "tcp")
+ * @domain: the DNS domain to look up the service in
+ * @cancellable: a #GCancellable, or %NULL
+ * @error: return location for a #GError, or %NULL
+ *
+ * Synchronously performs a DNS SRV lookup for the given @service and
+ * @protocol in the given @domain and returns an array of #GSrvTarget.
+ * @domain may be an ASCII-only or UTF-8 hostname. Note also that the
+ * @service and @protocol arguments DO NOT include the leading
+ * underscore that appears in the actual DNS entry.
+ *
+ * On success, g_resolver_lookup_service() will return a #GList of
+ * #GSrvTarget, sorted in order of preference. (That is, you should
+ * attempt to connect to the first target first, then the second if
+ * the first fails, etc.) You must free each target and the list when
+ * you are done with it.
+ *
+ * If the DNS resolution fails, @error (if non-%NULL) will be set to
+ * a value from #GResolverError.
+ *
+ * If @cancellable is non-%NULL, it can be used to cancel the
+ * operation, in which case @error (if non-%NULL) will be set to
+ * %G_IO_ERROR_CANCELLED.
+ *
+ * Return value: a #GList of #GSrvTarget, or %NULL on error. You must
+ * free each of the targets and the list when you are done with it.
+ * (You can use g_resolver_free_targets() to do this.)
+ *
+ * Since: 2.20
+ **/
+GList *
+g_resolver_lookup_service (GResolver *resolver,
+ const gchar *service,
+ const gchar *protocol,
+ const gchar *domain,
+ GCancellable *cancellable,
+ GError **error)
+{
+ GList *targets;
+ gchar *rrname;
+
+ g_return_val_if_fail (G_IS_RESOLVER (resolver), NULL);
+ g_return_val_if_fail (service != NULL, NULL);
+ g_return_val_if_fail (protocol != NULL, NULL);
+ g_return_val_if_fail (domain != NULL, NULL);
+
+ rrname = g_resolver_get_service_rrname (service, protocol, domain);
+
+ targets = G_RESOLVER_GET_CLASS (resolver)->
+ lookup_service (resolver, rrname, cancellable, error);
+
+ g_free (rrname);
+ return targets;
+}
+
+/**
+ * g_resolver_lookup_service_async:
+ * @resolver: a #GResolver
+ * @service: the service type to look up (eg, "ldap")
+ * @protocol: the networking protocol to use for @service (eg, "tcp")
+ * @domain: the DNS domain to look up the service in
+ * @cancellable: a #GCancellable, or %NULL
+ * @callback: callback to call after resolution completes
+ * @user_data: data for @callback
+ *
+ * Begins asynchronously performing a DNS SRV lookup for the given
+ * @service and @protocol in the given @domain, and eventually calls
+ * @callback, which must call g_resolver_lookup_service_finish() to
+ * get the final result. See g_resolver_lookup_service() for more
+ * details.
+ *
+ * Since: 2.20
+ **/
+void
+g_resolver_lookup_service_async (GResolver *resolver,
+ const gchar *service,
+ const gchar *protocol,
+ const gchar *domain,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ gchar *rrname;
+
+ g_return_if_fail (G_IS_RESOLVER (resolver));
+ g_return_if_fail (service != NULL);
+ g_return_if_fail (protocol != NULL);
+ g_return_if_fail (domain != NULL);
+
+ rrname = g_resolver_get_service_rrname (service, protocol, domain);
+
+ G_RESOLVER_GET_CLASS (resolver)->
+ lookup_service_async (resolver, rrname, cancellable, callback, user_data);
+
+ g_free (rrname);
+}
+
+/**
+ * g_resolver_lookup_service_finish:
+ * @resolver: a #GResolver
+ * @result: the result passed to your #GAsyncReadyCallback
+ * @error: return location for a #GError, or %NULL
+ *
+ * Retrieves the result of a previous call to
+ * g_resolver_lookup_service_async().
+ *
+ * If the DNS resolution failed, @error (if non-%NULL) will be set to
+ * a value from #GResolverError. If the operation was cancelled,
+ * @error will be set to %G_IO_ERROR_CANCELLED.
+ *
+ * Return value: a #GList of #GSrvTarget, or %NULL on error. See
+ * g_resolver_lookup_service() for more details.
+ *
+ * Since: 2.20
+ **/
+GList *
+g_resolver_lookup_service_finish (GResolver *resolver,
+ GAsyncResult *result,
+ GError **error)
+{
+ g_return_val_if_fail (G_IS_RESOLVER (resolver), NULL);
+
+ if (G_IS_SIMPLE_ASYNC_RESULT (result))
+ {
+ GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
+
+ if (g_simple_async_result_propagate_error (simple, error))
+ return NULL;
+ }
+
+ return G_RESOLVER_GET_CLASS (resolver)->
+ lookup_service_finish (resolver, result, error);
+}
+
+/**
+ * g_resolver_free_targets:
+ * @targets: a #GList of #GSrvTarget
+ *
+ * Frees @targets (which should be the return value from
+ * g_resolver_lookup_service() or g_resolver_lookup_service_finish()).
+ * (This is a convenience method; you can also simply free the
+ * results by hand.)
+ **/
+void
+g_resolver_free_targets (GList *targets)
+{
+ GList *t;
+
+ for (t = targets; t; t = t->next)
+ g_srv_target_free (t->data);
+ g_list_free (targets);
+}
+
+/**
+ * g_resolver_error_quark:
+ *
+ * Gets the #GResolver Error Quark.
+ *
+ * Return value: a #GQuark.
+ *
+ * Since: 2.20
+ **/
+GQuark
+g_resolver_error_quark (void)
+{
+ return g_quark_from_static_string ("g-resolver-error-quark");
+}
+
+
+static GResolverError
+g_resolver_error_from_addrinfo_error (gint err)
+{
+ switch (err)
+ {
+ case EAI_FAIL:
+ case EAI_NODATA:
+ case EAI_NONAME:
+ return G_RESOLVER_ERROR_NOT_FOUND;
+
+ case EAI_AGAIN:
+ return G_RESOLVER_ERROR_TEMPORARY_FAILURE;
+
+ default:
+ return G_RESOLVER_ERROR_INTERNAL;
+ }
+}
+
+struct addrinfo _g_resolver_addrinfo_hints;
+
+/* Private method to process a getaddrinfo() response. */
+GList *
+_g_resolver_addresses_from_addrinfo (const char *hostname,
+ struct addrinfo *res,
+ gint gai_retval,
+ GError **error)
+{
+ struct addrinfo *ai;
+ GSocketAddress *sockaddr;
+ GInetAddress *addr;
+ GList *addrs;
+
+ if (gai_retval != 0)
+ {
+ g_set_error (error, G_RESOLVER_ERROR,
+ g_resolver_error_from_addrinfo_error (gai_retval),
+ _("Error resolving '%s': %s"),
+ hostname, gai_strerror (gai_retval));
+ return NULL;
+ }
+
+ g_return_val_if_fail (res != NULL, NULL);
+
+ addrs = NULL;
+ for (ai = res; ai; ai = ai->ai_next)
+ {
+ sockaddr = g_socket_address_new_from_native (ai->ai_addr, ai->ai_addrlen);
+ if (!sockaddr || !G_IS_INET_SOCKET_ADDRESS (sockaddr))
+ continue;
+
+ addr = g_object_ref (g_inet_socket_address_get_address ((GInetSocketAddress *)sockaddr));
+ addrs = g_list_prepend (addrs, addr);
+ g_object_unref (sockaddr);
+ }
+
+ return g_list_reverse (addrs);
+}
+
+/* Private method to set up a getnameinfo() request */
+void
+_g_resolver_address_to_sockaddr (GInetAddress *address,
+ struct sockaddr_storage *sa,
+ gsize *sa_len)
+{
+ GSocketAddress *sockaddr;
+
+ sockaddr = g_inet_socket_address_new (address, 0);
+ g_socket_address_to_native (sockaddr, (struct sockaddr *)sa, sizeof (*sa));
+ *sa_len = g_socket_address_get_native_size (sockaddr);
+ g_object_unref (sockaddr);
+}
+
+/* Private method to process a getnameinfo() response. */
+char *
+_g_resolver_name_from_nameinfo (GInetAddress *address,
+ const gchar *name,
+ gint gni_retval,
+ GError **error)
+{
+ if (gni_retval != 0)
+ {
+ gchar *phys;
+
+ phys = g_inet_address_to_string (address);
+ g_set_error (error, G_RESOLVER_ERROR,
+ g_resolver_error_from_addrinfo_error (gni_retval),
+ _("Error reverse-resolving '%s': %s"),
+ phys ? phys : "(unknown)", gai_strerror (gni_retval));
+ g_free (phys);
+ return NULL;
+ }
+
+ return g_strdup (name);
+}
+
+#if defined(G_OS_UNIX)
+/* Private method to process a res_query response into GSrvTargets */
+GList *
+_g_resolver_targets_from_res_query (const gchar *rrname,
+ guchar *answer,
+ gint len,
+ gint herr,
+ GError **error)
+{
+ gint count;
+ gchar namebuf[1024];
+ guchar *end, *p;
+ guint16 type, qclass, rdlength, priority, weight, port;
+ guint32 ttl;
+ HEADER *header;
+ GSrvTarget *target;
+ GList *targets;
+
+ if (len <= 0)
+ {
+ GResolverError errnum;
+ const gchar *format;
+
+ if (len == 0 || herr == HOST_NOT_FOUND || herr == NO_DATA)
+ {
+ errnum = G_RESOLVER_ERROR_NOT_FOUND;
+ format = _("No service record for '%s'");
+ }
+ else if (herr == TRY_AGAIN)
+ {
+ errnum = G_RESOLVER_ERROR_TEMPORARY_FAILURE;
+ format = _("Temporarily unable to resolve '%s'");
+ }
+ else
+ {
+ errnum = G_RESOLVER_ERROR_INTERNAL;
+ format = _("Error resolving '%s'");
+ }
+
+ g_set_error (error, G_RESOLVER_ERROR, errnum, format, rrname);
+ return NULL;
+ }
+
+ targets = NULL;
+
+ header = (HEADER *)answer;
+ p = answer + sizeof (HEADER);
+ end = answer + len;
+
+ /* Skip query */
+ count = ntohs (header->qdcount);
+ while (count-- && p < end)
+ {
+ p += dn_expand (answer, end, p, namebuf, sizeof (namebuf));
+ p += 4;
+ }
+
+ /* Read answers */
+ count = ntohs (header->ancount);
+ while (count-- && p < end)
+ {
+ p += dn_expand (answer, end, p, namebuf, sizeof (namebuf));
+ GETSHORT (type, p);
+ GETSHORT (qclass, p);
+ GETLONG (ttl, p);
+ GETSHORT (rdlength, p);
+
+ if (type != T_SRV || qclass != C_IN)
+ {
+ p += rdlength;
+ continue;
+ }
+
+ GETSHORT (priority, p);
+ GETSHORT (weight, p);
+ GETSHORT (port, p);
+ p += dn_expand (answer, end, p, namebuf, sizeof (namebuf));
+
+ target = g_srv_target_new (namebuf, port, priority, weight);
+ targets = g_list_prepend (targets, target);
+ }
+
+ return g_srv_target_list_sort (targets);
+}
+#elif defined(G_OS_WIN32)
+/* Private method to process a DnsQuery response into GSrvTargets */
+GList *
+_g_resolver_targets_from_DnsQuery (const gchar *rrname,
+ DNS_STATUS status,
+ DNS_RECORD *results,
+ GError **error)
+{
+ DNS_RECORD *rec;
+ GSrvTarget *target;
+ GList *targets;
+
+ if (status != ERROR_SUCCESS)
+ {
+ GResolverError errnum;
+ const gchar *format;
+
+ if (status == DNS_ERROR_RCODE_NAME_ERROR)
+ {
+ errnum = G_RESOLVER_ERROR_NOT_FOUND;
+ format = _("No service record for '%s'");
+ }
+ else if (status == DNS_ERROR_RCODE_SERVER_FAILURE)
+ {
+ errnum = G_RESOLVER_ERROR_TEMPORARY_FAILURE;
+ format = _("Temporarily unable to resolve '%s'");
+ }
+ else
+ {
+ errnum = G_RESOLVER_ERROR_INTERNAL;
+ format = _("Error resolving '%s'");
+ }
+
+ g_set_error (error, G_RESOLVER_ERROR, errnum, format, rrname);
+ return NULL;
+ }
+
+ targets = NULL;
+ for (rec = results; rec; rec = rec->pNext)
+ {
+ if (rec->wType != DNS_TYPE_SRV)
+ continue;
+
+ target = g_srv_target_new (rec->Data.SRV.pNameTarget,
+ rec->Data.SRV.wPort,
+ rec->Data.SRV.wPriority,
+ rec->Data.SRV.wWeight);
+ targets = g_list_prepend (targets, target);
+ }
+
+ return g_srv_target_list_sort (targets);
+}
+
+#endif
+
+#define __G_RESOLVER_C__
+#include "gioaliasdef.c"
diff --git a/gio/gresolver.h b/gio/gresolver.h
new file mode 100644
index 0000000..788851e
--- /dev/null
+++ b/gio/gresolver.h
@@ -0,0 +1,159 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
+#ifndef __G_RESOLVER_H__
+#define __G_RESOLVER_H__
+
+#include <gio/giotypes.h>
+
+G_BEGIN_DECLS
+
+#define G_TYPE_RESOLVER (g_resolver_get_type ())
+#define G_RESOLVER(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_RESOLVER, GResolver))
+#define G_RESOLVER_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_TYPE_RESOLVER, GResolverClass))
+#define G_IS_RESOLVER(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_RESOLVER))
+#define G_IS_RESOLVER_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_RESOLVER))
+#define G_RESOLVER_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_RESOLVER, GResolverClass))
+
+struct _GResolver {
+ GObject parent_instance;
+
+};
+
+typedef struct {
+ GObjectClass parent_class;
+
+ GList * ( *lookup_by_name) (GResolver *resolver,
+ const gchar *hostname,
+ GCancellable *cancellable,
+ GError **error);
+ void ( *lookup_by_name_async) (GResolver *resolver,
+ const gchar *hostname,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data);
+ GList * ( *lookup_by_name_finish) (GResolver *resolver,
+ GAsyncResult *result,
+ GError **error);
+
+ gchar * ( *lookup_by_address) (GResolver *resolver,
+ GInetAddress *address,
+ GCancellable *cancellable,
+ GError **error);
+ void ( *lookup_by_address_async) (GResolver *resolver,
+ GInetAddress *address,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data);
+ gchar * ( *lookup_by_address_finish) (GResolver *resolver,
+ GAsyncResult *result,
+ GError **error);
+
+ GList * ( *lookup_service) (GResolver *resolver,
+ const gchar *rrname,
+ GCancellable *cancellable,
+ GError **error);
+ void ( *lookup_service_async) (GResolver *resolver,
+ const gchar *rrname,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data);
+ GList * ( *lookup_service_finish) (GResolver *resolver,
+ GAsyncResult *result,
+ GError **error);
+
+ /* Padding for future expansion */
+ void (*_g_reserved1) (void);
+ void (*_g_reserved2) (void);
+ void (*_g_reserved3) (void);
+ void (*_g_reserved4) (void);
+ void (*_g_reserved5) (void);
+ void (*_g_reserved6) (void);
+
+} GResolverClass;
+
+GType g_resolver_get_type (void) G_GNUC_CONST;
+GResolver *g_resolver_get_default (void);
+void g_resolver_set_default (GResolver *resolver);
+
+GList *g_resolver_lookup_by_name (GResolver *resolver,
+ const gchar *hostname,
+ GCancellable *cancellable,
+ GError **error);
+void g_resolver_lookup_by_name_async (GResolver *resolver,
+ const gchar *hostname,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data);
+GList *g_resolver_lookup_by_name_finish (GResolver *resolver,
+ GAsyncResult *result,
+ GError **error);
+
+void g_resolver_free_addresses (GList *addresses);
+
+gchar *g_resolver_lookup_by_address (GResolver *resolver,
+ GInetAddress *address,
+ GCancellable *cancellable,
+ GError **error);
+void g_resolver_lookup_by_address_async (GResolver *resolver,
+ GInetAddress *address,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data);
+gchar *g_resolver_lookup_by_address_finish (GResolver *resolver,
+ GAsyncResult *result,
+ GError **error);
+
+GList *g_resolver_lookup_service (GResolver *resolver,
+ const gchar *service,
+ const gchar *protocol,
+ const gchar *domain,
+ GCancellable *cancellable,
+ GError **error);
+void g_resolver_lookup_service_async (GResolver *resolver,
+ const gchar *service,
+ const gchar *protocol,
+ const gchar *domain,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data);
+GList *g_resolver_lookup_service_finish (GResolver *resolver,
+ GAsyncResult *result,
+ GError **error);
+
+void g_resolver_free_targets (GList *targets);
+
+/**
+ * G_RESOLVER_ERROR:
+ *
+ * Error domain for #GResolver. Errors in this domain will be from the
+ * #GResolverError enumeration. See #GError for more information on
+ * error domains.
+ **/
+#define G_RESOLVER_ERROR (g_resolver_error_quark ())
+GQuark g_resolver_error_quark (void);
+
+G_END_DECLS
+
+#endif /* __G_RESOLVER_H__ */
diff --git a/gio/gsrvtarget.c b/gio/gsrvtarget.c
new file mode 100644
index 0000000..22f3d60
--- /dev/null
+++ b/gio/gsrvtarget.c
@@ -0,0 +1,332 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "config.h"
+#include <glib.h>
+#include "glibintl.h"
+
+#include "gsrvtarget.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "gioalias.h"
+
+/**
+ * SECTION:gsrvtarget
+ * @short_description: DNS SRV record target
+ * @include: gio/gio.h
+ *
+ * SRV (service) records are used by some network protocols to provide
+ * service-specific aliasing and load-balancing. For example, XMPP
+ * (Jabber) uses SRV records to locate the XMPP server for a domain;
+ * rather than connecting directly to "example.com" or assuming a
+ * specific server hostname like "xmpp.example.com", an XMPP client
+ * would look up the "xmpp-client" SRV record for "example.com", and
+ * then connect to whatever host was pointed to by that record.
+ *
+ * Use g_resolver_lookup_service() or
+ * g_resolver_lookup_service_async() to find the #GSrvTarget<!-- -->s
+ * for a given service.
+ **/
+
+struct _GSrvTarget {
+ gchar *hostname;
+ guint16 port;
+
+ guint16 priority;
+ guint16 weight;
+};
+
+/**
+ * GSrvTarget:
+ *
+ * A single target host/port that a network service is running on.
+ */
+
+GType
+g_srv_target_get_type (void)
+{
+ static volatile gsize type_volatile = 0;
+
+ if (g_once_init_enter (&type_volatile))
+ {
+ GType type = g_boxed_type_register_static (
+ g_intern_static_string ("GSrvTarget"),
+ (GBoxedCopyFunc) g_srv_target_copy,
+ (GBoxedFreeFunc) g_srv_target_free);
+ g_once_init_leave (&type_volatile, type);
+ }
+ return type_volatile;
+}
+
+/**
+ * g_srv_target_new:
+ * @hostname: the host that the service is running on
+ * @port: the port that the service is running on
+ * @priority: the target's priority
+ * @weight: the target's weight
+ *
+ * Creates a new #GSrvTarget with the given parameters.
+ *
+ * You should not need to use this; normally #GSrvTarget<!-- -->s are
+ * created by #GResolver.
+ *
+ * Return value: a new #GSrvTarget.
+ *
+ * Since: 2.20
+ **/
+GSrvTarget *
+g_srv_target_new (const gchar *hostname,
+ guint16 port,
+ guint16 priority,
+ guint16 weight)
+{
+ GSrvTarget *target = g_slice_new0 (GSrvTarget);
+
+ target->hostname = g_strdup (hostname);
+ target->port = port;
+ target->priority = priority;
+ target->weight = weight;
+
+ return target;
+}
+
+/**
+ * g_srv_target_copy:
+ * @target: a #GSrvTarget
+ *
+ * Copies @target
+ *
+ * Return value: a copy of @target
+ *
+ * Since: 2.20
+ **/
+GSrvTarget *
+g_srv_target_copy (GSrvTarget *target)
+{
+ return g_srv_target_new (target->hostname, target->port,
+ target->priority, target->weight);
+}
+
+/**
+ * g_srv_target_free:
+ * @target: a #GSrvTarget
+ *
+ * Frees @target
+ *
+ * Since: 2.20
+ **/
+void
+g_srv_target_free (GSrvTarget *target)
+{
+ g_free (target->hostname);
+ g_slice_free (GSrvTarget, target);
+}
+
+/**
+ * g_srv_target_get_hostname:
+ * @target: a #GSrvTarget
+ *
+ * Gets @target's hostname (in ASCII form; if you are going to present
+ * this to the user, you should use g_hostname_is_ascii_encoded() to
+ * check if it contains encoded Unicode segments, and use
+ * g_hostname_to_unicode() to convert it if it does.)
+ *
+ * Return value: @target's hostname
+ *
+ * Since: 2.20
+ **/
+const gchar *
+g_srv_target_get_hostname (GSrvTarget *target)
+{
+ return target->hostname;
+}
+
+/**
+ * g_srv_target_get_port:
+ * @target: a #GSrvTarget
+ *
+ * Gets @target's port
+ *
+ * Return value: @target's port
+ *
+ * Since: 2.20
+ **/
+guint16
+g_srv_target_get_port (GSrvTarget *target)
+{
+ return target->port;
+}
+
+/**
+ * g_srv_target_get_priority:
+ * @target: a #GSrvTarget
+ *
+ * Gets @target's priority. You should not need to look at this;
+ * #GResolver already sorts the targets according to the algorithm in
+ * RFC 2782.
+ *
+ * Return value: @target's priority
+ *
+ * Since: 2.20
+ **/
+guint16
+g_srv_target_get_priority (GSrvTarget *target)
+{
+ return target->priority;
+}
+
+/**
+ * g_srv_target_get_weight:
+ * @target: a #GSrvTarget
+ *
+ * Gets @target's weight. You should not need to look at this;
+ * #GResolver already sorts the targets according to the algorithm in
+ * RFC 2782.
+ *
+ * Return value: @target's weight
+ *
+ * Since: 2.20
+ **/
+guint16
+g_srv_target_get_weight (GSrvTarget *target)
+{
+ return target->weight;
+}
+
+gint
+compare_target (gconstpointer a, gconstpointer b)
+{
+ GSrvTarget *ta = (GSrvTarget *)a;
+ GSrvTarget *tb = (GSrvTarget *)b;
+
+ if (ta->priority == tb->priority)
+ {
+ /* Arrange targets of the same priority "in any order, except
+ * that all those with weight 0 are placed at the beginning of
+ * the list"
+ */
+ if (ta->weight == 0)
+ return -1;
+ else if (tb->weight == 0)
+ return 1;
+ else
+ return g_random_int_range (-1, 1);
+ }
+ else
+ return ta->priority - tb->priority;
+}
+
+/**
+ * g_srv_target_list_sort:
+ * @targets: a #GList of #GSrvTarget
+ *
+ * Sorts @targets in place according to the algorithm in RFC 2782.
+ *
+ * Return value: the head of the sorted list.
+ **/
+GList *
+g_srv_target_list_sort (GList *targets)
+{
+ gint sum, val, priority, weight;
+ GList *first, *last, *n;
+ GSrvTarget *target;
+ gpointer tmp;
+
+ if (!targets)
+ return NULL;
+
+ if (!targets->next)
+ {
+ target = targets->data;
+ if (!strcmp (target->hostname, "."))
+ {
+ /* 'A Target of "." means that the service is decidedly not
+ * available at this domain.'
+ */
+ g_srv_target_free (target);
+ g_list_free (targets);
+ return NULL;
+ }
+ }
+
+ /* Sort by priority, and partly by weight */
+ targets = g_list_sort (targets, compare_target);
+
+ /* For each group of targets with the same priority, rebalance them
+ * according to weight.
+ */
+ for (first = targets; first; first = last->next)
+ {
+ /* Skip @first to a non-0-weight target. */
+ while (first && ((GSrvTarget *)first->data)->weight == 0)
+ first = first->next;
+ if (!first)
+ break;
+
+ /* Skip @last to the last target of the same priority. */
+ priority = ((GSrvTarget *)first->data)->priority;
+ last = first;
+ while (last->next &&
+ ((GSrvTarget *)last->next->data)->priority == priority)
+ last = last->next;
+
+ /* If there's only one non-0 weight target at this priority,
+ * we can move on to the next priority level.
+ */
+ if (last == first)
+ continue;
+
+ /* Randomly reorder the non-0 weight targets, giving precedence
+ * to the ones with higher weight. RFC 2782 describes this in
+ * terms of assigning a running sum to each target and building
+ * a new list. We do things slightly differently, but should get
+ * the same result.
+ */
+ for (n = first, sum = 0; n != last->next; n = n->next)
+ sum += ((GSrvTarget *)n->data)->weight;
+ while (first != last)
+ {
+ val = g_random_int_range (0, sum);
+ for (n = first; n != last; n = n->next)
+ {
+ weight = ((GSrvTarget *)n->data)->weight;
+ if (val < weight)
+ break;
+ val -= weight;
+ }
+
+ tmp = first->data;
+ first->data = n->data;
+ n->data = tmp;
+
+ sum -= weight;
+ first = first->next;
+ }
+ }
+
+ return targets;
+}
+
+#define __G_SRV_TARGET_C__
+#include "gioaliasdef.c"
diff --git a/gio/gsrvtarget.h b/gio/gsrvtarget.h
new file mode 100644
index 0000000..67ce2a9
--- /dev/null
+++ b/gio/gsrvtarget.h
@@ -0,0 +1,52 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
+#ifndef __G_SRV_TARGET_H__
+#define __G_SRV_TARGET_H__
+
+#include <gio/giotypes.h>
+
+G_BEGIN_DECLS
+
+GType g_srv_target_get_type (void) G_GNUC_CONST;
+#define G_TYPE_SRV_TARGET (g_srv_target_get_type ())
+
+GSrvTarget *g_srv_target_new (const gchar *hostname,
+ guint16 port,
+ guint16 priority,
+ guint16 weight);
+GSrvTarget *g_srv_target_copy (GSrvTarget *target);
+void g_srv_target_free (GSrvTarget *target);
+
+const gchar *g_srv_target_get_hostname (GSrvTarget *target);
+guint16 g_srv_target_get_port (GSrvTarget *target);
+guint16 g_srv_target_get_priority (GSrvTarget *target);
+guint16 g_srv_target_get_weight (GSrvTarget *target);
+
+GList *g_srv_target_list_sort (GList *targets);
+
+G_END_DECLS
+
+#endif /* __G_SRV_TARGET_H__ */
+
diff --git a/gio/gthreadedresolver.c b/gio/gthreadedresolver.c
new file mode 100644
index 0000000..0440a3d
--- /dev/null
+++ b/gio/gthreadedresolver.c
@@ -0,0 +1,617 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "config.h"
+#include <glib.h>
+#include "glibintl.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "gthreadedresolver.h"
+#include "gnetworkingprivate.h"
+
+#include "gcancellable.h"
+#include "gsimpleasyncresult.h"
+#include "gsocketaddress.h"
+
+#include "gioalias.h"
+
+G_DEFINE_TYPE (GThreadedResolver, g_threaded_resolver, G_TYPE_RESOLVER)
+
+static void threaded_resolver_thread (gpointer thread_data, gpointer pool_data);
+
+static void
+g_threaded_resolver_init (GThreadedResolver *gtr)
+{
+ if (g_thread_supported ())
+ {
+ gtr->thread_pool = g_thread_pool_new (threaded_resolver_thread, gtr,
+ -1, FALSE, NULL);
+ }
+}
+
+static void
+finalize (GObject *object)
+{
+ GThreadedResolver *gtr = G_THREADED_RESOLVER (object);
+
+ g_thread_pool_free (gtr->thread_pool, FALSE, FALSE);
+
+ G_OBJECT_CLASS (g_threaded_resolver_parent_class)->finalize (object);
+}
+
+/* A GThreadedResolverRequest represents a request in progress
+ * (usually, but see case 1). It is refcounted, to make sure that it
+ * doesn't get freed too soon. In particular, it can't be freed until
+ * (a) the resolver thread has finished resolving, (b) the calling
+ * thread has received an answer, and (c) no other thread could be in
+ * the process of trying to cancel it.
+ *
+ * The possibilities:
+ *
+ * 1. Synchronous non-cancellable request: in this case, the request
+ * is simply done in the calling thread, without using
+ * GThreadedResolverRequest at all.
+ *
+ * 2. Synchronous cancellable request: A req is created with a GCond,
+ * and 3 refs (for the resolution thread, the calling thread, and
+ * the cancellation signal handler).
+ *
+ * a. If the resolution completes successfully, the thread pool
+ * function (threaded_resolver_thread()) will call
+ * g_threaded_resolver_request_complete(), which will detach
+ * the "cancelled" signal handler (dropping one ref on req)
+ * and signal the GCond, and then unref the req. The calling
+ * thread receives the signal from the GCond, processes the
+ * response, and unrefs the req, causing it to be freed.
+ *
+ * b. If the resolution is cancelled before completing,
+ * request_cancelled() will call
+ * g_threaded_resolver_request_complete(), which will detach
+ * the signal handler (as above, unreffing the req), set
+ * req->error to indicate that it was cancelled, and signal
+ * the GCond. The calling thread receives the signal from the
+ * GCond, processes the response, and unrefs the req.
+ * Eventually, the resolver thread finishes resolving (or
+ * times out in the resolver) and calls
+ * g_threaded_resolver_request_complete() again, but
+ * _request_complete() does nothing this time since the
+ * request is already complete. The thread pool func then
+ * unrefs the req, causing it to be freed.
+ *
+ * 3. Asynchronous request: A req is created with a GSimpleAsyncResult
+ * (and no GCond). The calling thread's ref on req is set up to be
+ * automatically dropped when the async_result is freed. Two
+ * sub-possibilities:
+ *
+ * a. If the resolution completes, the thread pool function
+ * (threaded_resolver_thread()) will call
+ * g_threaded_resolver_request_complete(), which will detach
+ * the "cancelled" signal handler (if it was present)
+ * (unreffing the req), queue the async_result to complete in
+ * an idle handler, unref the async_result (which is still
+ * reffed by the idle handler though), and then unref the req.
+ * The main thread then invokes the async_result's callback
+ * and processes the response. When it finishes, the
+ * async_result drops the ref that was taken by
+ * g_simple_async_result_complete_in_idle(), which causes the
+ * async_result to be freed, which causes req to be unreffed
+ * and freed.
+ *
+ * b. If the resolution is cancelled, request_cancelled() will
+ * call g_threaded_resolver_request_complete(), which will
+ * detach the signal handler (as above, unreffing the req) set
+ * req->error to indicate that it was cancelled, and queue and
+ * unref the async_result. The main thread completes the
+ * async_request and unrefs it and the req, as above.
+ * Eventually, the resolver thread finishes resolving (or
+ * times out in the resolver) and calls
+ * g_threaded_resolver_request_complete() again, but
+ * _request_complete() does nothing this time since the
+ * request is already complete. The thread pool func then
+ * unrefs the req, causing it to be freed.
+ *
+ * g_threaded_resolver_request_complete() ensures that if the request
+ * completes and cancels "at the same time" that only one of the two
+ * conditions gets processed.
+ */
+
+typedef struct _GThreadedResolverRequest GThreadedResolverRequest;
+typedef void (*GThreadedResolverResolveFunc) (GThreadedResolverRequest *, GError **);
+typedef void (*GThreadedResolverFreeFunc) (GThreadedResolverRequest *);
+
+struct _GThreadedResolverRequest {
+ GThreadedResolverResolveFunc resolve_func;
+ GThreadedResolverFreeFunc free_func;
+
+ union {
+ struct {
+ gchar *hostname;
+ GList *addresses;
+ } name;
+ struct {
+ GInetAddress *address;
+ gchar *name;
+ } address;
+ struct {
+ gchar *rrname;
+ GList *targets;
+ } service;
+ } u;
+
+ GCancellable *cancellable;
+ GError *error;
+
+ GMutex *mutex;
+ guint ref_count;
+
+ GCond *cond;
+ GSimpleAsyncResult *async_result;
+ gboolean complete;
+
+};
+
+static void g_threaded_resolver_request_unref (GThreadedResolverRequest *req);
+static void request_cancelled (GCancellable *cancellable, gpointer req);
+static void request_cancelled_disconnect_notify (gpointer req, GClosure *closure);
+
+static GThreadedResolverRequest *
+g_threaded_resolver_request_new (GThreadedResolverResolveFunc resolve_func,
+ GThreadedResolverFreeFunc free_func,
+ GCancellable *cancellable)
+{
+ GThreadedResolverRequest *req;
+
+ req = g_slice_new0 (GThreadedResolverRequest);
+ req->resolve_func = resolve_func;
+ req->free_func = free_func;
+
+ /* Initial refcount is 2; one for the caller and one for resolve_func */
+ req->ref_count = 2;
+
+ if (g_thread_supported ())
+ req->mutex = g_mutex_new ();
+ /* Initially locked; caller must unlock */
+ g_mutex_lock (req->mutex);
+
+ if (cancellable)
+ {
+ req->ref_count++;
+ req->cancellable = g_object_ref (cancellable);
+ g_signal_connect_data (cancellable, "cancelled",
+ G_CALLBACK (request_cancelled), req,
+ request_cancelled_disconnect_notify, 0);
+ }
+
+ return req;
+}
+
+static void
+g_threaded_resolver_request_unref (GThreadedResolverRequest *req)
+{
+ guint ref_count;
+
+ g_mutex_lock (req->mutex);
+ ref_count = --req->ref_count;
+ g_mutex_unlock (req->mutex);
+ if (ref_count > 0)
+ return;
+
+ g_mutex_free (req->mutex);
+
+ if (req->cond)
+ g_cond_free (req->cond);
+
+ if (req->error)
+ g_error_free (req->error);
+
+ if (req->free_func)
+ req->free_func (req);
+
+ /* We don't have to free req->cancellable or req->async_result,
+ * since (if set), they must already have been freed by
+ * request_complete() in order to get here.
+ */
+
+ g_slice_free (GThreadedResolverRequest, req);
+}
+
+static void
+g_threaded_resolver_request_complete (GThreadedResolverRequest *req,
+ gboolean cancelled)
+{
+ g_mutex_lock (req->mutex);
+ if (req->complete)
+ {
+ /* The req was cancelled, and now it has finished resolving as
+ * well. But we have nowhere to send the result, so just return.
+ */
+ g_mutex_unlock (req->mutex);
+ return;
+ }
+
+ req->complete = TRUE;
+ g_mutex_unlock (req->mutex);
+
+ if (req->cancellable)
+ {
+ /* Possibly propagate a cancellation error */
+ if (cancelled && !req->error)
+ g_cancellable_set_error_if_cancelled (req->cancellable, &req->error);
+
+ /* Drop the signal handler's ref on @req */
+ g_signal_handlers_disconnect_by_func (req->cancellable, request_cancelled, req);
+ g_object_unref (req->cancellable);
+ req->cancellable = NULL;
+ }
+
+ if (req->cond)
+ g_cond_signal (req->cond);
+ else if (req->async_result)
+ {
+ if (req->error)
+ g_simple_async_result_set_from_error (req->async_result, req->error);
+ g_simple_async_result_complete_in_idle (req->async_result);
+
+ /* Drop our ref on the async_result, which will eventually cause
+ * it to drop its ref on req.
+ */
+ g_object_unref (req->async_result);
+ req->async_result = NULL;
+ }
+}
+
+static void
+request_cancelled (GCancellable *cancellable,
+ gpointer user_data)
+{
+ GThreadedResolverRequest *req = user_data;
+
+ g_threaded_resolver_request_complete (req, TRUE);
+
+ /* We can't actually cancel the resolver thread; it will eventually
+ * complete on its own and call request_complete() again, which will
+ * do nothing the second time.
+ */
+}
+
+static void
+request_cancelled_disconnect_notify (gpointer req,
+ GClosure *closure)
+{
+ g_threaded_resolver_request_unref (req);
+}
+
+static void
+threaded_resolver_thread (gpointer thread_data,
+ gpointer pool_data)
+{
+ GThreadedResolverRequest *req = thread_data;
+
+ req->resolve_func (req, &req->error);
+ g_threaded_resolver_request_complete (req, FALSE);
+ g_threaded_resolver_request_unref (req);
+}
+
+static void
+resolve_sync (GThreadedResolver *gtr,
+ GThreadedResolverRequest *req,
+ GError **error)
+{
+ if (!req->cancellable || !gtr->thread_pool)
+ {
+ req->resolve_func (req, error);
+ return;
+ }
+
+ req->cond = g_cond_new ();
+ g_thread_pool_push (gtr->thread_pool, req, NULL);
+ g_cond_wait (req->cond, req->mutex);
+ g_mutex_unlock (req->mutex);
+
+ if (req->error)
+ {
+ g_propagate_error (error, req->error);
+ req->error = NULL;
+ }
+}
+
+static void
+resolve_async (GThreadedResolver *gtr,
+ GThreadedResolverRequest *req,
+ GAsyncReadyCallback callback,
+ gpointer user_data,
+ gpointer tag)
+{
+ req->async_result = g_simple_async_result_new (G_OBJECT (gtr),
+ callback, user_data, tag);
+ g_simple_async_result_set_op_res_gpointer (req->async_result, req, NULL);
+ g_thread_pool_push (gtr->thread_pool, req, NULL);
+ g_mutex_unlock (req->mutex);
+}
+
+static GThreadedResolverRequest *
+resolve_finish (GResolver *resolver,
+ GAsyncResult *result,
+ gpointer tag,
+ GError **error)
+{
+ g_return_val_if_fail (g_simple_async_result_is_valid (result, G_OBJECT (resolver), tag), NULL);
+
+ return g_simple_async_result_get_op_res_gpointer (G_SIMPLE_ASYNC_RESULT (result));
+}
+
+static void
+do_lookup_by_name (GThreadedResolverRequest *req,
+ GError **error)
+{
+ struct addrinfo *res = NULL;
+ gint retval;
+
+ retval = getaddrinfo (req->u.name.hostname, NULL,
+ &_g_resolver_addrinfo_hints, &res);
+ req->u.name.addresses =
+ _g_resolver_addresses_from_addrinfo (req->u.name.hostname, res, retval, error);
+ if (res)
+ freeaddrinfo (res);
+}
+
+static GList *
+lookup_by_name (GResolver *resolver,
+ const gchar *hostname,
+ GCancellable *cancellable,
+ GError **error)
+{
+ GThreadedResolver *gtr = G_THREADED_RESOLVER (resolver);
+ GThreadedResolverRequest *req;
+ GList *addresses;
+
+ req = g_threaded_resolver_request_new (do_lookup_by_name, NULL, cancellable);
+ req->u.name.hostname = (gchar *)hostname;
+ resolve_sync (gtr, req, error);
+
+ addresses = req->u.name.addresses;
+ g_threaded_resolver_request_unref (req);
+ return addresses;
+}
+
+static void
+free_lookup_by_name (GThreadedResolverRequest *req)
+{
+ g_free (req->u.name.hostname);
+ if (req->u.name.addresses)
+ g_resolver_free_addresses (req->u.name.addresses);
+}
+
+static void
+lookup_by_name_async (GResolver *resolver,
+ const gchar *hostname,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GThreadedResolver *gtr = G_THREADED_RESOLVER (resolver);
+ GThreadedResolverRequest *req;
+
+ req = g_threaded_resolver_request_new (do_lookup_by_name, free_lookup_by_name,
+ cancellable);
+ req->u.name.hostname = g_strdup (hostname);
+ resolve_async (gtr, req, callback, user_data, lookup_by_name_async);
+}
+
+static GList *
+lookup_by_name_finish (GResolver *resolver,
+ GAsyncResult *result,
+ GError **error)
+{
+ GThreadedResolverRequest *req;
+ GList *addresses;
+
+ req = resolve_finish (resolver, result, lookup_by_name_async, error);
+ addresses = req->u.name.addresses;
+ req->u.name.addresses = NULL;
+ return addresses;
+}
+
+
+static void
+do_lookup_by_address (GThreadedResolverRequest *req,
+ GError **error)
+{
+ struct sockaddr_storage sockaddr;
+ gsize sockaddr_size;
+ gchar name[NI_MAXHOST];
+ gint retval;
+
+ _g_resolver_address_to_sockaddr (req->u.address.address,
+ &sockaddr, &sockaddr_size);
+
+ retval = getnameinfo ((struct sockaddr *)&sockaddr, sockaddr_size,
+ name, sizeof (name), NULL, 0, NI_NAMEREQD);
+ req->u.address.name = _g_resolver_name_from_nameinfo (req->u.address.address,
+ name, retval, error);
+}
+
+static gchar *
+lookup_by_address (GResolver *resolver,
+ GInetAddress *address,
+ GCancellable *cancellable,
+ GError **error)
+{
+ GThreadedResolver *gtr = G_THREADED_RESOLVER (resolver);
+ GThreadedResolverRequest *req;
+ gchar *name;
+
+ req = g_threaded_resolver_request_new (do_lookup_by_address, NULL, cancellable);
+ req->u.address.address = address;
+ resolve_sync (gtr, req, error);
+
+ name = req->u.address.name;
+ g_threaded_resolver_request_unref (req);
+ return name;
+}
+
+static void
+free_lookup_by_address (GThreadedResolverRequest *req)
+{
+ g_object_unref (req->u.address.address);
+ if (req->u.address.name)
+ g_free (req->u.address.name);
+}
+
+static void
+lookup_by_address_async (GResolver *resolver,
+ GInetAddress *address,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GThreadedResolver *gtr = G_THREADED_RESOLVER (resolver);
+ GThreadedResolverRequest *req;
+
+ req = g_threaded_resolver_request_new (do_lookup_by_address,
+ free_lookup_by_address,
+ cancellable);
+ req->u.address.address = g_object_ref (address);
+ resolve_async (gtr, req, callback, user_data, lookup_by_address_async);
+}
+
+static gchar *
+lookup_by_address_finish (GResolver *resolver,
+ GAsyncResult *result,
+ GError **error)
+{
+ GThreadedResolverRequest *req;
+ gchar *name;
+
+ req = resolve_finish (resolver, result, lookup_by_address_async, error);
+ name = req->u.address.name;
+ req->u.address.name = NULL;
+ return name;
+}
+
+
+static void
+do_lookup_service (GThreadedResolverRequest *req,
+ GError **error)
+{
+#if defined(G_OS_UNIX)
+ gint len, herr;
+ guchar answer[1024];
+#elif defined(G_OS_WIN32)
+ DNS_STATUS status;
+ DNS_RECORD *results;
+#endif
+
+#if defined(G_OS_UNIX)
+ len = res_query (req->u.service.rrname, C_IN, T_SRV, answer, sizeof (answer));
+ herr = h_errno;
+ req->u.service.targets = _g_resolver_targets_from_res_query (req->u.service.rrname, answer, len, herr, error);
+#elif defined(G_OS_WIN32)
+ status = DnsQuery_A (req->u.service.rrname, DNS_TYPE_SRV,
+ DNS_QUERY_STANDARD, NULL, &results, NULL);
+ req->u.service.targets = _g_resolver_targets_from_DnsQuery (req->u.service.rrname, status, results, error);
+ DnsRecordListFree (results, DnsFreeRecordList);
+#endif
+}
+
+static GList *
+lookup_service (GResolver *resolver,
+ const gchar *rrname,
+ GCancellable *cancellable,
+ GError **error)
+{
+ GThreadedResolver *gtr = G_THREADED_RESOLVER (resolver);
+ GThreadedResolverRequest *req;
+ GList *targets;
+
+ req = g_threaded_resolver_request_new (do_lookup_service, NULL, cancellable);
+ req->u.service.rrname = (char *)rrname;
+ resolve_sync (gtr, req, error);
+
+ targets = req->u.service.targets;
+ g_threaded_resolver_request_unref (req);
+ return targets;
+}
+
+static void
+free_lookup_service (GThreadedResolverRequest *req)
+{
+ g_free (req->u.service.rrname);
+ if (req->u.service.targets)
+ g_resolver_free_targets (req->u.service.targets);
+}
+
+static void
+lookup_service_async (GResolver *resolver,
+ const char *rrname,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GThreadedResolver *gtr = G_THREADED_RESOLVER (resolver);
+ GThreadedResolverRequest *req;
+
+ req = g_threaded_resolver_request_new (do_lookup_service,
+ free_lookup_service,
+ cancellable);
+ req->u.service.rrname = g_strdup (rrname);
+ resolve_async (gtr, req, callback, user_data, lookup_service_async);
+}
+
+static GList *
+lookup_service_finish (GResolver *resolver,
+ GAsyncResult *result,
+ GError **error)
+{
+ GThreadedResolverRequest *req;
+ GList *targets;
+
+ req = resolve_finish (resolver, result, lookup_service_async, error);
+ targets = req->u.service.targets;
+ req->u.service.targets = NULL;
+ return targets;
+}
+
+
+static void
+g_threaded_resolver_class_init (GThreadedResolverClass *threaded_class)
+{
+ GResolverClass *resolver_class = G_RESOLVER_CLASS (threaded_class);
+ GObjectClass *object_class = G_OBJECT_CLASS (threaded_class);
+
+ resolver_class->lookup_by_name = lookup_by_name;
+ resolver_class->lookup_by_name_async = lookup_by_name_async;
+ resolver_class->lookup_by_name_finish = lookup_by_name_finish;
+ resolver_class->lookup_by_address = lookup_by_address;
+ resolver_class->lookup_by_address_async = lookup_by_address_async;
+ resolver_class->lookup_by_address_finish = lookup_by_address_finish;
+ resolver_class->lookup_service = lookup_service;
+ resolver_class->lookup_service_async = lookup_service_async;
+ resolver_class->lookup_service_finish = lookup_service_finish;
+
+ object_class->finalize = finalize;
+}
+
+#define __G_THREADED_RESOLVER_C__
+#include "gioaliasdef.c"
diff --git a/gio/gthreadedresolver.h b/gio/gthreadedresolver.h
new file mode 100644
index 0000000..79d3327
--- /dev/null
+++ b/gio/gthreadedresolver.h
@@ -0,0 +1,50 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __G_THREADED_RESOLVER_H__
+#define __G_THREADED_RESOLVER_H__
+
+#include <gio/gresolver.h>
+
+G_BEGIN_DECLS
+
+#define G_TYPE_THREADED_RESOLVER (g_threaded_resolver_get_type ())
+#define G_THREADED_RESOLVER(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_THREADED_RESOLVER, GThreadedResolver))
+#define G_THREADED_RESOLVER_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_TYPE_THREADED_RESOLVER, GThreadedResolverClass))
+#define G_IS_THREADED_RESOLVER(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_THREADED_RESOLVER))
+#define G_IS_THREADED_RESOLVER_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_THREADED_RESOLVER))
+#define G_THREADED_RESOLVER_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_THREADED_RESOLVER, GThreadedResolverClass))
+
+typedef struct {
+ GResolver parent_instance;
+
+ GThreadPool *thread_pool;
+} GThreadedResolver;
+
+typedef struct {
+ GResolverClass parent_class;
+
+} GThreadedResolverClass;
+
+GType g_threaded_resolver_get_type (void) G_GNUC_CONST;
+
+G_END_DECLS
+
+#endif /* __G_RESOLVER_H__ */
diff --git a/gio/gunixresolver.c b/gio/gunixresolver.c
new file mode 100644
index 0000000..36bb046
--- /dev/null
+++ b/gio/gunixresolver.c
@@ -0,0 +1,433 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "config.h"
+#include <glib.h>
+#include "glibintl.h"
+
+#include <resolv.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "gunixresolver.h"
+#include "gnetworkingprivate.h"
+
+#include "gcancellable.h"
+#include "gsimpleasyncresult.h"
+#include "gsocketaddress.h"
+
+#include "gioalias.h"
+
+G_DEFINE_TYPE (GUnixResolver, g_unix_resolver, G_TYPE_THREADED_RESOLVER)
+
+static gboolean g_unix_resolver_watch (GIOChannel *iochannel,
+ GIOCondition condition,
+ gpointer user_data);
+
+static void
+g_unix_resolver_init (GUnixResolver *gur)
+{
+ gint fd;
+ GIOChannel *io;
+
+ /* FIXME: how many workers? */
+ gur->asyncns = _g_asyncns_new (2);
+
+ fd = _g_asyncns_fd (gur->asyncns);
+ io = g_io_channel_unix_new (fd);
+ gur->watch = g_io_add_watch (io, G_IO_IN | G_IO_HUP | G_IO_ERR,
+ g_unix_resolver_watch, gur);
+ g_io_channel_unref (io);
+}
+
+static void
+g_unix_resolver_finalize (GObject *object)
+{
+ GUnixResolver *gur = G_UNIX_RESOLVER (object);
+
+ if (gur->watch)
+ g_source_remove (gur->watch);
+ _g_asyncns_free (gur->asyncns);
+
+ G_OBJECT_CLASS (g_unix_resolver_parent_class)->finalize (object);
+}
+
+/* The various request possibilities:
+ *
+ * 1. Synchronous: handed off to the base class (GThreadedResolver);
+ * since it's never possible to cancel a synchronous request in a
+ * single-threaded program, the request is done in the calling
+ * thread.
+ *
+ * 2. Asynchronous: An appropriate _g_asyncns_query_t is created, and
+ * then a GUnixResolverRequest is created with that query and a
+ * GSimpleAsyncResult. Two sub-possibilities:
+ *
+ * a. The resolution completes: g_unix_resolver_watch() sees that
+ * the request has completed, and calls
+ * g_unix_resolver_request_complete(), which detaches the
+ * "cancelled" signal handler (if it was present) and then
+ * immediately completes the async_result (since
+ * g_unix_resolver_watch() is already run from main-loop
+ * time.) After completing the async_result, it unrefs it,
+ * causing the req to be freed as well.
+ *
+ * b. The resolution is cancelled: request_cancelled() calls
+ * _g_asyncns_cancel() to cancel the resolution. Then it calls
+ * g_unix_resolver_request_complete(), which detaches the
+ * signal handler, and queues async_result to complete in an
+ * idle handler. It then unrefs the async_result to ensure
+ * that after its callback runs, it will be destroyed, in turn
+ * causing the req to be freed. Because the asyncns resolution
+ * was cancelled, g_unix_resolver_watch() will never be
+ * triggered for this req.
+ *
+ * Since there's only a single thread, it's not possible for the
+ * request to both complete and be cancelled "at the same time",
+ * and each of the two possibilities takes steps to block the other
+ * from being able to happen later, so it's always safe to free req
+ * after the async_result completes.
+ */
+
+typedef struct _GUnixResolverRequest GUnixResolverRequest;
+typedef void (*GUnixResolverFreeFunc) (GUnixResolverRequest *);
+
+struct _GUnixResolverRequest {
+ GUnixResolver *gur;
+
+ _g_asyncns_query_t *qy;
+ union {
+ gchar *hostname;
+ GInetAddress *address;
+ gchar *service;
+ } u;
+ GUnixResolverFreeFunc free_func;
+
+ GCancellable *cancellable;
+ GSimpleAsyncResult *async_result;
+
+};
+
+static void g_unix_resolver_request_free (GUnixResolverRequest *req);
+static void request_cancelled (GCancellable *cancellable,
+ gpointer user_data);
+
+static GUnixResolverRequest *
+g_unix_resolver_request_new (GUnixResolver *gur,
+ _g_asyncns_query_t *qy,
+ GUnixResolverFreeFunc free_func,
+ GCancellable *cancellable,
+ GSimpleAsyncResult *async_result)
+{
+ GUnixResolverRequest *req;
+
+ req = g_slice_new0 (GUnixResolverRequest);
+ req->gur = g_object_ref (gur);
+ req->qy = qy;
+ req->free_func = free_func;
+
+ if (cancellable)
+ {
+ req->cancellable = g_object_ref (cancellable);
+ g_signal_connect (cancellable, "cancelled",
+ G_CALLBACK (request_cancelled), req);
+ }
+
+ req->async_result = g_object_ref (async_result);
+
+ g_simple_async_result_set_op_res_gpointer (req->async_result, req, (GDestroyNotify)g_unix_resolver_request_free);
+
+ return req;
+}
+
+static void
+g_unix_resolver_request_free (GUnixResolverRequest *req)
+{
+ /* If the user didn't call _finish the qy will still be around. */
+ if (req->qy)
+ _g_asyncns_cancel (req->gur->asyncns, req->qy);
+
+ /* We don't have to free req->cancellable and req->async_result,
+ * since they must already have been freed if we're here.
+ */
+
+ g_slice_free (GUnixResolverRequest, req);
+}
+
+static void
+g_unix_resolver_request_complete (GUnixResolverRequest *req,
+ gboolean need_idle)
+{
+ if (req->cancellable)
+ {
+ g_signal_handlers_disconnect_by_func (req->cancellable, request_cancelled, req);
+ g_object_unref (req->cancellable);
+ req->cancellable = NULL;
+ }
+
+ if (need_idle)
+ g_simple_async_result_complete_in_idle (req->async_result);
+ else
+ g_simple_async_result_complete (req->async_result);
+
+ /* If we completed_in_idle, that will have taken an extra ref on
+ * req->async_result; if not, then we're already done. Either way we
+ * need to unref the async_result to make sure it eventually is
+ * destroyed, causing req to be freed.
+ */
+ g_object_unref (req->async_result);
+}
+
+static void
+request_cancelled (GCancellable *cancellable,
+ gpointer user_data)
+{
+ GUnixResolverRequest *req = user_data;
+ GError *error = NULL;
+
+ _g_asyncns_cancel (req->gur->asyncns, req->qy);
+ req->qy = NULL;
+
+ g_cancellable_set_error_if_cancelled (cancellable, &error);
+ g_simple_async_result_set_from_error (req->async_result, error);
+ g_error_free (error);
+
+ g_unix_resolver_request_complete (req, TRUE);
+}
+
+static gboolean
+g_unix_resolver_watch (GIOChannel *iochannel,
+ GIOCondition condition,
+ gpointer user_data)
+{
+ GUnixResolver *gur = user_data;
+ _g_asyncns_query_t *qy;
+ GUnixResolverRequest *req;
+
+ if (condition & (G_IO_HUP | G_IO_ERR))
+ {
+ /* Shouldn't happen. Should we create a new asyncns? FIXME */
+ g_warning ("asyncns died");
+ gur->watch = 0;
+ return FALSE;
+ }
+
+ while (_g_asyncns_wait (gur->asyncns, FALSE) == 0 &&
+ (qy = _g_asyncns_getnext (gur->asyncns)) != NULL)
+ {
+ req = _g_asyncns_getuserdata (gur->asyncns, qy);
+ g_unix_resolver_request_complete (req, FALSE);
+ }
+
+ return TRUE;
+}
+
+static GUnixResolverRequest *
+resolve_async (GUnixResolver *gur,
+ _g_asyncns_query_t *qy,
+ GUnixResolverFreeFunc free_func,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data,
+ gpointer tag)
+{
+ GSimpleAsyncResult *result;
+ GUnixResolverRequest *req;
+
+ result = g_simple_async_result_new (G_OBJECT (gur), callback, user_data, tag);
+ req = g_unix_resolver_request_new (gur, qy, free_func, cancellable, result);
+ g_object_unref (result);
+ _g_asyncns_setuserdata (gur->asyncns, qy, req);
+
+ return req;
+}
+
+static void
+lookup_by_name_free (GUnixResolverRequest *req)
+{
+ g_free (req->u.hostname);
+}
+
+static void
+lookup_by_name_async (GResolver *resolver,
+ const gchar *hostname,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GUnixResolver *gur = G_UNIX_RESOLVER (resolver);
+ GUnixResolverRequest *req;
+ _g_asyncns_query_t *qy;
+
+ qy = _g_asyncns_getaddrinfo (gur->asyncns, hostname, NULL,
+ &_g_resolver_addrinfo_hints);
+ req = resolve_async (gur, qy, lookup_by_name_free, cancellable,
+ callback, user_data, lookup_by_name_async);
+ req->u.hostname = g_strdup (hostname);
+}
+
+static GList *
+lookup_by_name_finish (GResolver *resolver,
+ GAsyncResult *result,
+ GError **error)
+{
+ GSimpleAsyncResult *simple;
+ GUnixResolverRequest *req;
+ struct addrinfo *res;
+ gint retval;
+ GList *addresses;
+
+ g_return_val_if_fail (g_simple_async_result_is_valid (result, G_OBJECT (resolver), lookup_by_name_async), FALSE);
+ simple = G_SIMPLE_ASYNC_RESULT (result);
+
+ req = g_simple_async_result_get_op_res_gpointer (simple);
+ retval = _g_asyncns_getaddrinfo_done (req->gur->asyncns, req->qy, &res);
+ req->qy = NULL;
+ addresses = _g_resolver_addresses_from_addrinfo (req->u.hostname, res, retval, error);
+ if (res)
+ freeaddrinfo (res);
+
+ return addresses;
+}
+
+
+static void
+lookup_by_address_free (GUnixResolverRequest *req)
+{
+ g_object_unref (req->u.address);
+}
+
+static void
+lookup_by_address_async (GResolver *resolver,
+ GInetAddress *address,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GUnixResolver *gur = G_UNIX_RESOLVER (resolver);
+ GUnixResolverRequest *req;
+ _g_asyncns_query_t *qy;
+ struct sockaddr_storage sockaddr;
+ gsize sockaddr_size;
+
+ _g_resolver_address_to_sockaddr (address, &sockaddr, &sockaddr_size);
+ qy = _g_asyncns_getnameinfo (gur->asyncns,
+ (struct sockaddr *)&sockaddr, sockaddr_size,
+ NI_NAMEREQD, TRUE, FALSE);
+ req = resolve_async (gur, qy, lookup_by_address_free, cancellable,
+ callback, user_data, lookup_by_address_async);
+ req->u.address = g_object_ref (address);
+}
+
+static gchar *
+lookup_by_address_finish (GResolver *resolver,
+ GAsyncResult *result,
+ GError **error)
+{
+ GSimpleAsyncResult *simple;
+ GUnixResolverRequest *req;
+ gchar host[NI_MAXHOST], *name;
+ gint retval;
+
+ g_return_val_if_fail (g_simple_async_result_is_valid (result, G_OBJECT (resolver), lookup_by_address_async), FALSE);
+ simple = G_SIMPLE_ASYNC_RESULT (result);
+
+ req = g_simple_async_result_get_op_res_gpointer (simple);
+ retval = _g_asyncns_getnameinfo_done (req->gur->asyncns, req->qy,
+ host, sizeof (host), NULL, 0);
+ req->qy = NULL;
+ name = _g_resolver_name_from_nameinfo (req->u.address, host, retval, error);
+
+ return name;
+}
+
+
+static void
+lookup_service_free (GUnixResolverRequest *req)
+{
+ g_free (req->u.service);
+}
+
+static void
+lookup_service_async (GResolver *resolver,
+ const char *rrname,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GUnixResolver *gur = G_UNIX_RESOLVER (resolver);
+ GUnixResolverRequest *req;
+ _g_asyncns_query_t *qy;
+
+ qy = _g_asyncns_res_query (gur->asyncns, rrname, C_IN, T_SRV);
+ req = resolve_async (gur, qy, lookup_service_free, cancellable,
+ callback, user_data, lookup_service_async);
+ req->u.service = g_strdup (rrname);
+}
+
+static GList *
+lookup_service_finish (GResolver *resolver,
+ GAsyncResult *result,
+ GError **error)
+{
+ GSimpleAsyncResult *simple;
+ GUnixResolverRequest *req;
+ guchar *answer;
+ gint len, herr;
+ GList *targets;
+
+ g_return_val_if_fail (g_simple_async_result_is_valid (result, G_OBJECT (resolver), lookup_service_async), FALSE);
+ simple = G_SIMPLE_ASYNC_RESULT (result);
+
+ req = g_simple_async_result_get_op_res_gpointer (simple);
+ len = _g_asyncns_res_done (req->gur->asyncns, req->qy, &answer);
+ req->qy = NULL;
+ if (len < 0)
+ herr = h_errno;
+ else
+ herr = 0;
+
+ targets = _g_resolver_targets_from_res_query (req->u.service, answer, len, herr, error);
+ _g_asyncns_freeanswer (answer);
+
+ return targets;
+}
+
+
+static void
+g_unix_resolver_class_init (GUnixResolverClass *unix_class)
+{
+ GResolverClass *resolver_class = G_RESOLVER_CLASS (unix_class);
+ GObjectClass *object_class = G_OBJECT_CLASS (unix_class);
+
+ resolver_class->lookup_by_name_async = lookup_by_name_async;
+ resolver_class->lookup_by_name_finish = lookup_by_name_finish;
+ resolver_class->lookup_by_address_async = lookup_by_address_async;
+ resolver_class->lookup_by_address_finish = lookup_by_address_finish;
+ resolver_class->lookup_service_async = lookup_service_async;
+ resolver_class->lookup_service_finish = lookup_service_finish;
+
+ object_class->finalize = g_unix_resolver_finalize;
+}
+
+#define __G_UNIX_RESOLVER_C__
+#include "gioaliasdef.c"
diff --git a/gio/gunixresolver.h b/gio/gunixresolver.h
new file mode 100644
index 0000000..cf7765b
--- /dev/null
+++ b/gio/gunixresolver.h
@@ -0,0 +1,53 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __G_UNIX_RESOLVER_H__
+#define __G_UNIX_RESOLVER_H__
+
+#include <gio/gthreadedresolver.h>
+#include "libasyncns/asyncns.h"
+
+G_BEGIN_DECLS
+
+#define G_TYPE_UNIX_RESOLVER (g_unix_resolver_get_type ())
+#define G_UNIX_RESOLVER(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_UNIX_RESOLVER, GUnixResolver))
+#define G_UNIX_RESOLVER_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_TYPE_UNIX_RESOLVER, GUnixResolverClass))
+#define G_IS_UNIX_RESOLVER(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_UNIX_RESOLVER))
+#define G_IS_UNIX_RESOLVER_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_UNIX_RESOLVER))
+#define G_UNIX_RESOLVER_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_UNIX_RESOLVER, GUnixResolverClass))
+
+typedef struct {
+ GThreadedResolver parent_instance;
+
+ _g_asyncns_t *asyncns;
+ guint watch;
+
+} GUnixResolver;
+
+typedef struct {
+ GThreadedResolverClass parent_class;
+
+} GUnixResolverClass;
+
+GType g_unix_resolver_get_type (void) G_GNUC_CONST;
+
+G_END_DECLS
+
+#endif /* __G_RESOLVER_H__ */
diff --git a/gio/gwin32resolver.c b/gio/gwin32resolver.c
new file mode 100644
index 0000000..cab45cc
--- /dev/null
+++ b/gio/gwin32resolver.c
@@ -0,0 +1,481 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "config.h"
+#include <glib.h>
+#include "glibintl.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "gwin32resolver.h"
+#include "gnetworkingprivate.h"
+
+#include "gcancellable.h"
+#include "gsimpleasyncresult.h"
+#include "gsocketaddress.h"
+
+#include "gioalias.h"
+
+G_DEFINE_TYPE (GWin32Resolver, g_win32_resolver, G_TYPE_THREADED_RESOLVER)
+
+static void
+g_win32_resolver_init (GWin32Resolver *gwr)
+{
+}
+
+/* This is simpler than GThreadedResolver since we don't have to worry
+ * about multiple application-level threads, but more complicated than
+ * GUnixResolver, since we do have to deal with multiple threads of
+ * our own.
+ *
+ * The various request possibilities:
+ *
+ * 1. Synchronous: handed off to the base class (GThreadedResolver);
+ * since it's never possible to cancel a synchronous request in a
+ * single-threaded program, the request is done in the calling
+ * thread.
+ *
+ * 2. Asynchronous: A GWin32ResolverRequest is created with
+ * appropriate query-specific information, a Windows event handle,
+ * and a GSimpleAsyncResult. This is then handed to the
+ * Windows-internal thread pool, which does the raw DNS query part
+ * of the operation (being careful to not call any glib methods
+ * that might fail when called from another thread when
+ * g_thread_init() has not been called). The main thread sets up a
+ * GSource to asynchronously poll the event handle. There are two
+ * sub-possibilities:
+ *
+ * a. The resolution completes: the threadpool function calls
+ * SetEvent() on the event handle and then returns.
+ *
+ * b. The resolution is cancelled: request_cancelled()
+ * disconnects the "cancelled" signal handler, and queues an
+ * idle handler to complete the async_result.
+ *
+ * Since we can't free the request from the threadpool thread
+ * (because of glib locking issues), we *always* have to have it
+ * call SetEvent and trigger the callback to indicate that it is
+ * done. But this means that it's possible for the request to be
+ * cancelled (queuing an idle handler to return that result) and
+ * then have the resolution thread complete before the idle handler
+ * runs. So the event callback and the idle handler need to both
+ * watch out for this, making sure we don't complete the same
+ * result twice.
+ */
+
+typedef struct GWin32ResolverRequest GWin32ResolverRequest;
+typedef void (*GWin32ResolverRequestFreeFunc) (GWin32ResolverRequest *);
+
+struct GWin32ResolverRequest {
+ GWin32ResolverRequestFreeFunc free_func;
+
+ GCancellable *cancellable;
+ GError *error;
+
+ HANDLE *event;
+ GSimpleAsyncResult *async_result;
+ gboolean complete;
+ guint cancelled_idle;
+
+ union {
+ struct {
+ gchar *name;
+ gint retval;
+ struct addrinfo *res;
+ } name;
+
+ struct {
+ GInetAddress *iaddr;
+ struct sockaddr_storage addr;
+ gsize addrlen;
+ gint retval;
+ gchar *namebuf;
+ } address;
+
+ struct {
+ gchar *rrname;
+ DNS_STATUS retval;
+ DNS_RECORD *results;
+ } service;
+ } u;
+
+};
+
+static GSource *g_win32_handle_source_add (HANDLE handle,
+ GSourceFunc callback,
+ gpointer user_data);
+
+static gboolean request_completed (gpointer user_data);
+static void request_cancelled (GCancellable *cancellable,
+ gpointer user_data);
+
+GWin32ResolverRequest *
+g_win32_resolver_request_new (GResolver *resolver,
+ GWin32ResolverRequestFreeFunc free_func,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data,
+ gpointer tag)
+{
+ GWin32ResolverRequest *req;
+
+ req = g_slice_new0 (GWin32ResolverRequest);
+ req->free_func = free_func;
+
+ req->async_result = g_simple_async_result_new (G_OBJECT (resolver), callback,
+ user_data, tag);
+ g_simple_async_result_set_op_res_gpointer (req->async_result, req, NULL);
+
+ req->event = CreateEvent (NULL, FALSE, FALSE, NULL);
+ g_win32_handle_source_add (req->event, request_completed, req);
+
+ if (cancellable)
+ {
+ req->cancellable = g_object_ref (cancellable);
+ g_signal_connect (cancellable, "cancelled",
+ G_CALLBACK (request_cancelled), req);
+ }
+
+ return req;
+}
+
+static gboolean
+request_completed (gpointer user_data)
+{
+ GWin32ResolverRequest *req = user_data;
+
+ /* Clean up cancellation-related stuff first */
+ if (req->cancelled_idle)
+ {
+ g_source_remove (req->cancelled_idle);
+ req->cancelled_idle = 0;
+ }
+ if (req->cancellable)
+ {
+ g_signal_handlers_disconnect_by_func (req->cancellable, request_cancelled, req);
+ g_object_unref (req->cancellable);
+ }
+
+ /* Now complete the result (assuming it wasn't already completed) */
+ if (req->async_result)
+ {
+ g_simple_async_result_complete (req->async_result);
+ g_object_unref (req->async_result);
+ }
+
+ /* And free req */
+ CloseHandle (req->event);
+ req->free_func (req);
+ g_slice_free (GWin32ResolverRequest, req);
+
+ return FALSE;
+}
+
+static gboolean
+request_cancelled_idle (gpointer user_data)
+{
+ GWin32ResolverRequest *req = user_data;
+ GError *error = NULL;
+
+ req->cancelled_idle = 0;
+
+ g_cancellable_set_error_if_cancelled (req->cancellable, &error);
+ g_simple_async_result_set_from_error (req->async_result, error);
+ g_simple_async_result_complete (req->async_result);
+
+ g_object_unref (req->async_result);
+ req->async_result = NULL;
+
+ /* request_completed will eventually be called to free req */
+
+ return FALSE;
+}
+
+static void
+request_cancelled (GCancellable *cancellable,
+ gpointer user_data)
+{
+ GWin32ResolverRequest *req = user_data;
+
+ if (req->cancellable)
+ {
+ g_signal_handlers_disconnect_by_func (req->cancellable, request_cancelled, req);
+ g_object_unref (req->cancellable);
+ req->cancellable = NULL;
+ }
+
+ /* We need to wait until main-loop-time to actually complete the
+ * result; we don't use _complete_in_idle() here because we need to
+ * keep track of the source id.
+ */
+ req->cancelled_idle = g_idle_add (request_cancelled_idle, req);
+}
+
+static DWORD WINAPI
+lookup_by_name_in_thread (LPVOID data)
+{
+ GWin32ResolverRequest *req = data;
+
+ req->u.name.retval = getaddrinfo (req->u.name.name, NULL,
+ &_g_resolver_addrinfo_hints,
+ &req->u.name.res);
+ SetEvent (req->event);
+ return 0;
+}
+
+static void
+free_lookup_by_name (GWin32ResolverRequest *req)
+{
+ g_free (req->u.name.name);
+ if (req->u.name.res)
+ freeaddrinfo (req->u.name.res);
+}
+
+static void
+lookup_by_name_async (GResolver *resolver,
+ const gchar *hostname,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GWin32ResolverRequest *req;
+
+ req = g_win32_resolver_request_new (resolver, free_lookup_by_name,
+ cancellable, callback, user_data,
+ lookup_by_name_async);
+ req->u.name.name = g_strdup (hostname);
+
+ QueueUserWorkItem (lookup_by_name_in_thread, req, 0);
+}
+
+static GList *
+lookup_by_name_finish (GResolver *resolver,
+ GAsyncResult *result,
+ GError **error)
+{
+ GSimpleAsyncResult *simple;
+ GWin32ResolverRequest *req;
+
+ g_return_val_if_fail (g_simple_async_result_is_valid (result, G_OBJECT (resolver), lookup_by_name_async), NULL);
+ simple = G_SIMPLE_ASYNC_RESULT (result);
+
+ req = g_simple_async_result_get_op_res_gpointer (simple);
+ return _g_resolver_addresses_from_addrinfo (req->u.name.name, req->u.name.res,
+ req->u.name.retval, error);
+}
+
+
+static DWORD WINAPI
+lookup_by_addresses_in_thread (LPVOID data)
+{
+ GWin32ResolverRequest *req = data;
+
+ req->u.address.retval =
+ getnameinfo ((struct sockaddr *)&req->u.address.addr,
+ req->u.address.addrlen,
+ req->u.address.namebuf, NI_MAXHOST, NULL, 0, NI_NAMEREQD);
+ SetEvent (req->event);
+ return 0;
+}
+
+static void
+free_lookup_by_address (GWin32ResolverRequest *req)
+{
+ g_object_unref (req->u.address.iaddr);
+ g_free (req->u.address.namebuf);
+}
+
+static void
+lookup_by_address_async (GResolver *resolver,
+ GInetAddress *address,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GWin32ResolverRequest *req;
+
+ req = g_win32_resolver_request_new (resolver, free_lookup_by_address,
+ cancellable, callback, user_data,
+ lookup_by_address_async);
+
+ req->u.address.iaddr = g_object_ref (address);
+ _g_resolver_address_to_sockaddr (address, &req->u.address.addr,
+ &req->u.address.addrlen);
+ req->u.address.namebuf = g_malloc (NI_MAXHOST);
+
+ QueueUserWorkItem (lookup_by_addresses_in_thread, req, 0);
+}
+
+static char *
+lookup_by_address_finish (GResolver *resolver,
+ GAsyncResult *result,
+ GError **error)
+{
+ GSimpleAsyncResult *simple;
+ GWin32ResolverRequest *req;
+
+ g_return_val_if_fail (g_simple_async_result_is_valid (result, G_OBJECT (resolver), lookup_by_address_async), NULL);
+ simple = G_SIMPLE_ASYNC_RESULT (result);
+
+ req = g_simple_async_result_get_op_res_gpointer (simple);
+ return _g_resolver_name_from_nameinfo (req->u.address.iaddr,
+ req->u.address.namebuf,
+ req->u.address.retval, error);
+}
+
+
+static DWORD WINAPI
+lookup_service_in_thread (LPVOID data)
+{
+ GWin32ResolverRequest *req = data;
+
+ req->u.service.retval =
+ DnsQuery_A (req->u.service.rrname, DNS_TYPE_SRV, DNS_QUERY_STANDARD,
+ NULL, &req->u.service.results, NULL);
+ SetEvent (req->event);
+ return 0;
+}
+
+static void
+free_lookup_service (GWin32ResolverRequest *req)
+{
+ g_free (req->u.service.rrname);
+ if (req->u.service.results)
+ DnsRecordListFree (req->u.service.results, DnsFreeRecordList);
+}
+
+static void
+lookup_service_async (GResolver *resolver,
+ const char *rrname,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GWin32ResolverRequest *req;
+
+ req = g_win32_resolver_request_new (resolver, free_lookup_service,
+ cancellable, callback, user_data,
+ lookup_service_async);
+ req->u.service.rrname = g_strdup (rrname);
+
+ QueueUserWorkItem (lookup_service_in_thread, req, 0);
+}
+
+static GList *
+lookup_service_finish (GResolver *resolver,
+ GAsyncResult *result,
+ GError **error)
+{
+ GSimpleAsyncResult *simple;
+ GWin32ResolverRequest *req;
+
+ g_return_val_if_fail (g_simple_async_result_is_valid (result, G_OBJECT (resolver), lookup_service_async), NULL);
+ simple = G_SIMPLE_ASYNC_RESULT (result);
+
+ req = g_simple_async_result_get_op_res_gpointer (simple);
+ return _g_resolver_targets_from_DnsQuery (req->u.service.rrname,
+ req->u.service.retval,
+ req->u.service.results, error);
+}
+
+
+static void
+g_win32_resolver_class_init (GWin32ResolverClass *win32_class)
+{
+ GResolverClass *resolver_class = G_RESOLVER_CLASS (win32_class);
+
+ resolver_class->lookup_by_name_async = lookup_by_name_async;
+ resolver_class->lookup_by_name_finish = lookup_by_name_finish;
+ resolver_class->lookup_by_address_async = lookup_by_address_async;
+ resolver_class->lookup_by_address_finish = lookup_by_address_finish;
+ resolver_class->lookup_service_async = lookup_service_async;
+ resolver_class->lookup_service_finish = lookup_service_finish;
+}
+
+
+/* Windows HANDLE GSource */
+
+typedef struct {
+ GSource source;
+ GPollFD pollfd;
+} GWin32HandleSource;
+
+static gboolean
+g_win32_handle_source_prepare (GSource *source,
+ gint *timeout)
+{
+ *timeout = -1;
+ return FALSE;
+}
+
+static gboolean
+g_win32_handle_source_check (GSource *source)
+{
+ GWin32HandleSource *hsource = (GWin32HandleSource *)source;
+
+ return hsource->pollfd.revents;
+}
+
+static gboolean
+g_win32_handle_source_dispatch (GSource *source,
+ GSourceFunc callback,
+ gpointer user_data)
+{
+ return (*callback) (user_data);
+}
+
+static void
+g_win32_handle_source_finalize (GSource *source)
+{
+ ;
+}
+
+GSourceFuncs g_win32_handle_source_funcs = {
+ g_win32_handle_source_prepare,
+ g_win32_handle_source_check,
+ g_win32_handle_source_dispatch,
+ g_win32_handle_source_finalize
+};
+
+static GSource *
+g_win32_handle_source_add (HANDLE handle,
+ GSourceFunc callback,
+ gpointer user_data)
+{
+ GWin32HandleSource *hsource;
+ GSource *source;
+
+ source = g_source_new (&g_win32_handle_source_funcs, sizeof (GWin32HandleSource));
+ hsource = (GWin32HandleSource *)source;
+ hsource->pollfd.fd = (gint)handle;
+ hsource->pollfd.events = G_IO_IN;
+ hsource->pollfd.revents = 0;
+ g_source_add_poll (source, &hsource->pollfd);
+
+ g_source_set_callback (source, callback, user_data, NULL);
+ g_source_attach (source, NULL);
+ return source;
+}
+
+#define __G_WIN32_RESOLVER_C__
+#include "gioaliasdef.c"
diff --git a/gio/gwin32resolver.h b/gio/gwin32resolver.h
new file mode 100644
index 0000000..5cc6a2c
--- /dev/null
+++ b/gio/gwin32resolver.h
@@ -0,0 +1,49 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __G_WIN32_RESOLVER_H__
+#define __G_WIN32_RESOLVER_H__
+
+#include <gio/gthreadedresolver.h>
+
+G_BEGIN_DECLS
+
+#define G_TYPE_WIN32_RESOLVER (g_win32_resolver_get_type ())
+#define G_WIN32_RESOLVER(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_WIN32_RESOLVER, GWin32Resolver))
+#define G_WIN32_RESOLVER_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_TYPE_WIN32_RESOLVER, GWin32ResolverClass))
+#define G_IS_WIN32_RESOLVER(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_WIN32_RESOLVER))
+#define G_IS_WIN32_RESOLVER_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_WIN32_RESOLVER))
+#define G_WIN32_RESOLVER_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_WIN32_RESOLVER, GWin32ResolverClass))
+
+typedef struct {
+ GThreadedResolver parent_instance;
+
+} GWin32Resolver;
+
+typedef struct {
+ GThreadedResolverClass parent_class;
+
+} GWin32ResolverClass;
+
+GType g_win32_resolver_get_type (void) G_GNUC_CONST;
+
+G_END_DECLS
+
+#endif /* __G_RESOLVER_H__ */
diff --git a/gio/libasyncns/Makefile.am b/gio/libasyncns/Makefile.am
new file mode 100644
index 0000000..80b20a2
--- /dev/null
+++ b/gio/libasyncns/Makefile.am
@@ -0,0 +1,15 @@
+## Process this file with automake to produce Makefile.in
+include $(top_srcdir)/Makefile.decl
+
+INCLUDES = -I$(top_srcdir)
+
+noinst_LTLIBRARIES = libasyncns.la
+
+libasyncns_la_SOURCES = \
+ asyncns.c \
+ asyncns.h \
+ g-asyncns.h
+
+libasyncns_la_LIBADD = $(LIBASYNCNS_LIBADD)
+
+EXTRA_DIST += README update.sh
diff --git a/gio/libasyncns/README b/gio/libasyncns/README
new file mode 100644
index 0000000..b926291
--- /dev/null
+++ b/gio/libasyncns/README
@@ -0,0 +1,7 @@
+The sources are derived from Lennart Poettering's libasyncns library:
+
+ http://0pointer.de/lennart/projects/libasyncns/
+
+The 'update.sh' script in this directory, when pointed at
+the original sources updates the files in this directory
+to the new version
diff --git a/gio/libasyncns/asyncns.c b/gio/libasyncns/asyncns.c
new file mode 100644
index 0000000..3c4db73
--- /dev/null
+++ b/gio/libasyncns/asyncns.c
@@ -0,0 +1,1498 @@
+/***
+ This file is part of libasyncns.
+
+ Copyright 2005-2008 Lennart Poettering
+
+ libasyncns is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation, either version 2.1 of the
+ License, or (at your option) any later version.
+
+ libasyncns is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with libasyncns. If not, see
+ <http://www.gnu.org/licenses/>.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include "g-asyncns.h"
+#endif
+
+/* #undef HAVE_PTHREAD */
+
+#include <assert.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <unistd.h>
+#include <sys/select.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/wait.h>
+#include <sys/types.h>
+#include <pwd.h>
+#include <netinet/in.h>
+#include <arpa/nameser.h>
+#include <resolv.h>
+#include <dirent.h>
+
+#if HAVE_ARPA_NAMESER_COMPAT_H
+#include <arpa/nameser_compat.h>
+#endif
+
+#ifdef HAVE_SYS_PRCTL_H
+#include <sys/prctl.h>
+#endif
+
+#if HAVE_PTHREAD
+#include <pthread.h>
+#endif
+
+#include "asyncns.h"
+
+#ifndef MSG_NOSIGNAL
+#define MSG_NOSIGNAL 0
+#endif
+
+#define MAX_WORKERS 16
+#define MAX_QUERIES 256
+#define BUFSIZE (10240)
+
+typedef enum {
+ REQUEST_ADDRINFO,
+ RESPONSE_ADDRINFO,
+ REQUEST_NAMEINFO,
+ RESPONSE_NAMEINFO,
+ REQUEST_RES_QUERY,
+ REQUEST_RES_SEARCH,
+ RESPONSE_RES,
+ REQUEST_TERMINATE,
+ RESPONSE_DIED
+} query_type_t;
+
+enum {
+ REQUEST_RECV_FD = 0,
+ REQUEST_SEND_FD = 1,
+ RESPONSE_RECV_FD = 2,
+ RESPONSE_SEND_FD = 3,
+ MESSAGE_FD_MAX = 4
+};
+
+struct asyncns {
+ int fds[4];
+
+#ifndef HAVE_PTHREAD
+ pid_t workers[MAX_WORKERS];
+#else
+ pthread_t workers[MAX_WORKERS];
+#endif
+ unsigned valid_workers;
+
+ unsigned current_id, current_index;
+ _g_asyncns_query_t* queries[MAX_QUERIES];
+
+ _g_asyncns_query_t *done_head, *done_tail;
+
+ int n_queries;
+ int dead;
+};
+
+struct _g_asyncns_query {
+ _g_asyncns_t *asyncns;
+ int done;
+ unsigned id;
+ query_type_t type;
+ _g_asyncns_query_t *done_next, *done_prev;
+ int ret;
+ int _errno;
+ int _h_errno;
+ struct addrinfo *addrinfo;
+ char *serv, *host;
+ void *userdata;
+};
+
+typedef struct rheader {
+ query_type_t type;
+ unsigned id;
+ size_t length;
+} rheader_t;
+
+typedef struct addrinfo_request {
+ struct rheader header;
+ int hints_is_null;
+ int ai_flags;
+ int ai_family;
+ int ai_socktype;
+ int ai_protocol;
+ size_t node_len, service_len;
+} addrinfo_request_t;
+
+typedef struct addrinfo_response {
+ struct rheader header;
+ int ret;
+ int _errno;
+ int _h_errno;
+ /* followed by addrinfo_serialization[] */
+} addrinfo_response_t;
+
+typedef struct addrinfo_serialization {
+ int ai_flags;
+ int ai_family;
+ int ai_socktype;
+ int ai_protocol;
+ size_t ai_addrlen;
+ size_t canonname_len;
+ /* Followed by ai_addr amd ai_canonname with variable lengths */
+} addrinfo_serialization_t;
+
+typedef struct nameinfo_request {
+ struct rheader header;
+ int flags;
+ socklen_t sockaddr_len;
+ int gethost, getserv;
+} nameinfo_request_t;
+
+typedef struct nameinfo_response {
+ struct rheader header;
+ size_t hostlen, servlen;
+ int ret;
+ int _errno;
+ int _h_errno;
+} nameinfo_response_t;
+
+typedef struct res_query_request {
+ struct rheader header;
+ int class;
+ int type;
+ size_t dname_len;
+} res_request_t;
+
+typedef struct res_query_response {
+ struct rheader header;
+ int ret;
+ int _errno;
+ int _h_errno;
+} res_response_t;
+
+#ifndef HAVE_STRNDUP
+
+static char *strndup(const char *s, size_t l) {
+ size_t a;
+ char *n;
+
+ a = strlen(s);
+ if (a > l)
+ a = l;
+
+ if (!(n = malloc(a+1)))
+ return NULL;
+
+ memcpy(n, s, a);
+ n[a] = 0;
+
+ return n;
+}
+
+#endif
+
+#ifndef HAVE_PTHREAD
+
+static int close_allv(const int except_fds[]) {
+ struct rlimit rl;
+ int fd;
+
+#ifdef __linux__
+
+ DIR *d;
+
+ assert(except_fds);
+
+ if ((d = opendir("/proc/self/fd"))) {
+
+ struct dirent *de;
+
+ while ((de = readdir(d))) {
+ int found;
+ long l;
+ char *e = NULL;
+ int i;
+
+ if (de->d_name[0] == '.')
+ continue;
+
+ errno = 0;
+ l = strtol(de->d_name, &e, 10);
+ if (errno != 0 || !e || *e) {
+ closedir(d);
+ errno = EINVAL;
+ return -1;
+ }
+
+ fd = (int) l;
+
+ if ((long) fd != l) {
+ closedir(d);
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (fd < 3)
+ continue;
+
+ if (fd == dirfd(d))
+ continue;
+
+ found = 0;
+ for (i = 0; except_fds[i] >= 0; i++)
+ if (except_fds[i] == fd) {
+ found = 1;
+ break;
+ }
+
+ if (found)
+ continue;
+
+ if (close(fd) < 0) {
+ int saved_errno;
+
+ saved_errno = errno;
+ closedir(d);
+ errno = saved_errno;
+
+ return -1;
+ }
+ }
+
+ closedir(d);
+ return 0;
+ }
+
+#endif
+
+ if (getrlimit(RLIMIT_NOFILE, &rl) < 0)
+ return -1;
+
+ for (fd = 0; fd < (int) rl.rlim_max; fd++) {
+ int i;
+
+ if (fd <= 3)
+ continue;
+
+ for (i = 0; except_fds[i] >= 0; i++)
+ if (except_fds[i] == fd)
+ continue;
+
+ if (close(fd) < 0 && errno != EBADF)
+ return -1;
+ }
+
+ return 0;
+}
+
+static int reset_sigsv(const int except[]) {
+ int sig;
+ assert(except);
+
+ for (sig = 1; sig < NSIG; sig++) {
+ int reset = 1;
+
+ switch (sig) {
+ case SIGKILL:
+ case SIGSTOP:
+ reset = 0;
+ break;
+
+ default: {
+ int i;
+
+ for (i = 0; except[i] > 0; i++) {
+ if (sig == except[i]) {
+ reset = 0;
+ break;
+ }
+ }
+ }
+ }
+
+ if (reset) {
+ struct sigaction sa;
+
+ memset(&sa, 0, sizeof(sa));
+ sa.sa_handler = SIG_DFL;
+
+ /* On Linux the first two RT signals are reserved by
+ * glibc, and sigaction() will return EINVAL for them. */
+ if ((sigaction(sig, &sa, NULL) < 0))
+ if (errno != EINVAL)
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static int ignore_sigsv(const int ignore[]) {
+ int i;
+ assert(ignore);
+
+ for (i = 0; ignore[i] > 0; i++) {
+ struct sigaction sa;
+
+ memset(&sa, 0, sizeof(sa));
+ sa.sa_handler = SIG_IGN;
+
+ if ((sigaction(ignore[i], &sa, NULL) < 0))
+ return -1;
+ }
+
+ return 0;
+}
+
+#endif
+
+static int fd_nonblock(int fd) {
+ int i;
+ assert(fd >= 0);
+
+ if ((i = fcntl(fd, F_GETFL, 0)) < 0)
+ return -1;
+
+ if (i & O_NONBLOCK)
+ return 0;
+
+ return fcntl(fd, F_SETFL, i | O_NONBLOCK);
+}
+
+static int fd_cloexec(int fd) {
+ int v;
+ assert(fd >= 0);
+
+ if ((v = fcntl(fd, F_GETFD, 0)) < 0)
+ return -1;
+
+ if (v & FD_CLOEXEC)
+ return 0;
+
+ return fcntl(fd, F_SETFD, v | FD_CLOEXEC);
+}
+
+static int send_died(int out_fd) {
+ rheader_t rh;
+ assert(out_fd > 0);
+
+ memset(&rh, 0, sizeof(rh));
+ rh.type = RESPONSE_DIED;
+ rh.id = 0;
+ rh.length = sizeof(rh);
+
+ return send(out_fd, &rh, rh.length, MSG_NOSIGNAL);
+}
+
+static void *serialize_addrinfo(void *p, const struct addrinfo *ai, size_t *length, size_t maxlength) {
+ addrinfo_serialization_t s;
+ size_t cnl, l;
+ assert(p);
+ assert(ai);
+ assert(length);
+ assert(*length <= maxlength);
+
+ cnl = (ai->ai_canonname ? strlen(ai->ai_canonname)+1 : 0);
+ l = sizeof(addrinfo_serialization_t) + ai->ai_addrlen + cnl;
+
+ if (*length + l > maxlength)
+ return NULL;
+
+ s.ai_flags = ai->ai_flags;
+ s.ai_family = ai->ai_family;
+ s.ai_socktype = ai->ai_socktype;
+ s.ai_protocol = ai->ai_protocol;
+ s.ai_addrlen = ai->ai_addrlen;
+ s.canonname_len = cnl;
+
+ memcpy((uint8_t*) p, &s, sizeof(addrinfo_serialization_t));
+ memcpy((uint8_t*) p + sizeof(addrinfo_serialization_t), ai->ai_addr, ai->ai_addrlen);
+
+ if (ai->ai_canonname)
+ strcpy((char*) p + sizeof(addrinfo_serialization_t) + ai->ai_addrlen, ai->ai_canonname);
+
+ *length += l;
+ return (uint8_t*) p + l;
+}
+
+static int send_addrinfo_reply(int out_fd, unsigned id, int ret, struct addrinfo *ai, int _errno, int _h_errno) {
+ addrinfo_response_t data[BUFSIZE/sizeof(addrinfo_response_t) + 1];
+ addrinfo_response_t *resp = data;
+ assert(out_fd >= 0);
+
+ memset(data, 0, sizeof(data));
+ resp->header.type = RESPONSE_ADDRINFO;
+ resp->header.id = id;
+ resp->header.length = sizeof(addrinfo_response_t);
+ resp->ret = ret;
+ resp->_errno = _errno;
+ resp->_h_errno = _h_errno;
+
+ if (ret == 0 && ai) {
+ void *p = data + 1;
+ struct addrinfo *k;
+
+ for (k = ai; k; k = k->ai_next) {
+
+ if (!(p = serialize_addrinfo(p, k, &resp->header.length, (char*) data + BUFSIZE - (char*) p))) {
+ resp->ret = EAI_MEMORY;
+ break;
+ }
+ }
+ }
+
+ if (ai)
+ freeaddrinfo(ai);
+
+ return send(out_fd, resp, resp->header.length, MSG_NOSIGNAL);
+}
+
+static int send_nameinfo_reply(int out_fd, unsigned id, int ret, const char *host, const char *serv, int _errno, int _h_errno) {
+ nameinfo_response_t data[BUFSIZE/sizeof(nameinfo_response_t) + 1];
+ size_t hl, sl;
+ nameinfo_response_t *resp = data;
+
+ assert(out_fd >= 0);
+
+ sl = serv ? strlen(serv)+1 : 0;
+ hl = host ? strlen(host)+1 : 0;
+
+ memset(data, 0, sizeof(data));
+ resp->header.type = RESPONSE_NAMEINFO;
+ resp->header.id = id;
+ resp->header.length = sizeof(nameinfo_response_t) + hl + sl;
+ resp->ret = ret;
+ resp->_errno = _errno;
+ resp->_h_errno = _h_errno;
+ resp->hostlen = hl;
+ resp->servlen = sl;
+
+ assert(sizeof(data) >= resp->header.length);
+
+ if (host)
+ memcpy((uint8_t *)data + sizeof(nameinfo_response_t), host, hl);
+
+ if (serv)
+ memcpy((uint8_t *)data + sizeof(nameinfo_response_t) + hl, serv, sl);
+
+ return send(out_fd, resp, resp->header.length, MSG_NOSIGNAL);
+}
+
+static int send_res_reply(int out_fd, unsigned id, const unsigned char *answer, int ret, int _errno, int _h_errno) {
+ res_response_t data[BUFSIZE/sizeof(res_response_t) + 1];
+ res_response_t *resp = data;
+
+ assert(out_fd >= 0);
+
+ memset(data, 0, sizeof(data));
+ resp->header.type = RESPONSE_RES;
+ resp->header.id = id;
+ resp->header.length = sizeof(res_response_t) + (ret < 0 ? 0 : ret);
+ resp->ret = ret;
+ resp->_errno = _errno;
+ resp->_h_errno = _h_errno;
+
+ assert(sizeof(data) >= resp->header.length);
+
+ if (ret > 0)
+ memcpy((uint8_t *)data + sizeof(res_response_t), answer, ret);
+
+ return send(out_fd, resp, resp->header.length, MSG_NOSIGNAL);
+}
+
+static int handle_request(int out_fd, const rheader_t *req, size_t length) {
+ assert(out_fd >= 0);
+ assert(req);
+ assert(length >= sizeof(rheader_t));
+ assert(length == req->length);
+
+ switch (req->type) {
+ case REQUEST_ADDRINFO: {
+ struct addrinfo ai, *result = NULL;
+ const addrinfo_request_t *ai_req = (const addrinfo_request_t*) req;
+ const char *node, *service;
+ int ret;
+
+ assert(length >= sizeof(addrinfo_request_t));
+ assert(length == sizeof(addrinfo_request_t) + ai_req->node_len + ai_req->service_len);
+
+ memset(&ai, 0, sizeof(ai));
+ ai.ai_flags = ai_req->ai_flags;
+ ai.ai_family = ai_req->ai_family;
+ ai.ai_socktype = ai_req->ai_socktype;
+ ai.ai_protocol = ai_req->ai_protocol;
+
+ node = ai_req->node_len ? (const char*) req + sizeof(addrinfo_request_t) : NULL;
+ service = ai_req->service_len ? (const char*) req + sizeof(addrinfo_request_t) + ai_req->node_len : NULL;
+
+ ret = getaddrinfo(node, service,
+ ai_req->hints_is_null ? NULL : &ai,
+ &result);
+
+ /* send_addrinfo_reply() frees result */
+ return send_addrinfo_reply(out_fd, req->id, ret, result, errno, h_errno);
+ }
+
+ case REQUEST_NAMEINFO: {
+ int ret;
+ const nameinfo_request_t *ni_req = (const nameinfo_request_t*) req;
+ char hostbuf[NI_MAXHOST], servbuf[NI_MAXSERV];
+ struct sockaddr_storage sa;
+
+ assert(length >= sizeof(nameinfo_request_t));
+ assert(length == sizeof(nameinfo_request_t) + ni_req->sockaddr_len);
+
+ memcpy(&sa, (const uint8_t *)req + sizeof(nameinfo_request_t), ni_req->sockaddr_len);
+
+ ret = getnameinfo((struct sockaddr *)&sa, ni_req->sockaddr_len,
+ ni_req->gethost ? hostbuf : NULL, ni_req->gethost ? sizeof(hostbuf) : 0,
+ ni_req->getserv ? servbuf : NULL, ni_req->getserv ? sizeof(servbuf) : 0,
+ ni_req->flags);
+
+ return send_nameinfo_reply(out_fd, req->id, ret,
+ ret == 0 && ni_req->gethost ? hostbuf : NULL,
+ ret == 0 && ni_req->getserv ? servbuf : NULL,
+ errno, h_errno);
+ }
+
+ case REQUEST_RES_QUERY:
+ case REQUEST_RES_SEARCH: {
+ int ret;
+ HEADER answer[BUFSIZE/sizeof(HEADER) + 1];
+ const res_request_t *res_req = (const res_request_t *)req;
+ const char *dname;
+
+ assert(length >= sizeof(res_request_t));
+ assert(length == sizeof(res_request_t) + res_req->dname_len);
+
+ dname = (const char *) req + sizeof(res_request_t);
+
+ if (req->type == REQUEST_RES_QUERY)
+ ret = res_query(dname, res_req->class, res_req->type, (unsigned char *) answer, BUFSIZE);
+ else
+ ret = res_search(dname, res_req->class, res_req->type, (unsigned char *) answer, BUFSIZE);
+
+ return send_res_reply(out_fd, req->id, (unsigned char *) answer, ret, errno, h_errno);
+ }
+
+ case REQUEST_TERMINATE:
+ /* Quit */
+ return -1;
+
+ default:
+ ;
+ }
+
+ return 0;
+}
+
+#ifndef HAVE_PTHREAD
+
+static int process_worker(int in_fd, int out_fd) {
+ int have_death_sig = 0;
+ int good_fds[3];
+ int ret = 1;
+
+ const int ignore_sigs[] = {
+ SIGINT,
+ SIGHUP,
+ SIGPIPE,
+ SIGUSR1,
+ SIGUSR2,
+ -1
+ };
+
+ assert(in_fd > 2);
+ assert(out_fd > 2);
+
+ close(0);
+ close(1);
+ close(2);
+
+ if (open("/dev/null", O_RDONLY) != 0)
+ goto fail;
+
+ if (open("/dev/null", O_WRONLY) != 1)
+ goto fail;
+
+ if (open("/dev/null", O_WRONLY) != 2)
+ goto fail;
+
+ if (chdir("/") < 0)
+ goto fail;
+
+ if (geteuid() == 0) {
+ struct passwd *pw;
+ int r;
+
+ if ((pw = getpwnam("nobody"))) {
+#ifdef HAVE_SETRESUID
+ r = setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid);
+#elif HAVE_SETREUID
+ r = setreuid(pw->pw_uid, pw->pw_uid);
+#else
+ if ((r = setuid(pw->pw_uid)) >= 0)
+ r = seteuid(pw->pw_uid);
+#endif
+ if (r < 0)
+ goto fail;
+ }
+ }
+
+ if (reset_sigsv(ignore_sigs) < 0)
+ goto fail;
+
+ if (ignore_sigsv(ignore_sigs) < 0)
+ goto fail;
+
+ good_fds[0] = in_fd; good_fds[1] = out_fd; good_fds[2] = -1;
+ if (close_allv(good_fds) < 0)
+ goto fail;
+
+#ifdef PR_SET_PDEATHSIG
+ if (prctl(PR_SET_PDEATHSIG, SIGTERM) >= 0)
+ have_death_sig = 1;
+#endif
+
+ if (!have_death_sig)
+ fd_nonblock(in_fd);
+
+ while (getppid() > 1) { /* if the parent PID is 1 our parent process died. */
+ rheader_t buf[BUFSIZE/sizeof(rheader_t) + 1];
+ ssize_t length;
+
+ if (!have_death_sig) {
+ fd_set fds;
+ struct timeval tv = { 0, 500000 };
+
+ FD_ZERO(&fds);
+ FD_SET(in_fd, &fds);
+
+ if (select(in_fd+1, &fds, NULL, NULL, &tv) < 0)
+ break;
+
+ if (getppid() == 1)
+ break;
+ }
+
+ if ((length = recv(in_fd, buf, sizeof(buf), 0)) <= 0) {
+
+ if (length < 0 &&
+ (errno == EAGAIN || errno == EINTR))
+ continue;
+
+ break;
+ }
+
+ if (handle_request(out_fd, buf, (size_t) length) < 0)
+ break;
+ }
+
+ ret = 0;
+
+fail:
+ send_died(out_fd);
+
+ return ret;
+}
+
+#else
+
+static void* thread_worker(void *p) {
+ _g_asyncns_t *asyncns = p;
+ sigset_t fullset;
+
+ /* No signals in this thread please */
+ sigfillset(&fullset);
+ pthread_sigmask(SIG_BLOCK, &fullset, NULL);
+
+ while (!asyncns->dead) {
+ rheader_t buf[BUFSIZE/sizeof(rheader_t) + 1];
+ ssize_t length;
+
+ if ((length = recv(asyncns->fds[REQUEST_RECV_FD], buf, sizeof(buf), 0)) <= 0) {
+
+ if (length < 0 &&
+ (errno == EAGAIN || errno == EINTR))
+ continue;
+
+ break;
+ }
+
+ if (asyncns->dead)
+ break;
+
+ if (handle_request(asyncns->fds[RESPONSE_SEND_FD], buf, (size_t) length) < 0)
+ break;
+ }
+
+ send_died(asyncns->fds[RESPONSE_SEND_FD]);
+
+ return NULL;
+}
+
+#endif
+
+_g_asyncns_t* _g_asyncns_new(unsigned n_proc) {
+ _g_asyncns_t *asyncns = NULL;
+ int i;
+ assert(n_proc >= 1);
+
+ if (n_proc > MAX_WORKERS)
+ n_proc = MAX_WORKERS;
+
+ if (!(asyncns = malloc(sizeof(_g_asyncns_t)))) {
+ errno = ENOMEM;
+ goto fail;
+ }
+
+ asyncns->dead = 0;
+ asyncns->valid_workers = 0;
+
+ for (i = 0; i < MESSAGE_FD_MAX; i++)
+ asyncns->fds[i] = -1;
+
+ memset(asyncns->queries, 0, sizeof(asyncns->queries));
+
+ if (socketpair(PF_UNIX, SOCK_DGRAM, 0, asyncns->fds) < 0 ||
+ socketpair(PF_UNIX, SOCK_DGRAM, 0, asyncns->fds+2) < 0)
+ goto fail;
+
+ for (i = 0; i < MESSAGE_FD_MAX; i++)
+ fd_cloexec(asyncns->fds[i]);
+
+ for (asyncns->valid_workers = 0; asyncns->valid_workers < n_proc; asyncns->valid_workers++) {
+
+#ifndef HAVE_PTHREAD
+ if ((asyncns->workers[asyncns->valid_workers] = fork()) < 0)
+ goto fail;
+ else if (asyncns->workers[asyncns->valid_workers] == 0) {
+ int ret;
+
+ close(asyncns->fds[REQUEST_SEND_FD]);
+ close(asyncns->fds[RESPONSE_RECV_FD]);
+ ret = process_worker(asyncns->fds[REQUEST_RECV_FD], asyncns->fds[RESPONSE_SEND_FD]);
+ close(asyncns->fds[REQUEST_RECV_FD]);
+ close(asyncns->fds[RESPONSE_SEND_FD]);
+ _exit(ret);
+ }
+#else
+ int r;
+
+ if ((r = pthread_create(&asyncns->workers[asyncns->valid_workers], NULL, thread_worker, asyncns)) != 0) {
+ errno = r;
+ goto fail;
+ }
+#endif
+ }
+
+#ifndef HAVE_PTHREAD
+ close(asyncns->fds[REQUEST_RECV_FD]);
+ close(asyncns->fds[RESPONSE_SEND_FD]);
+ asyncns->fds[REQUEST_RECV_FD] = asyncns->fds[RESPONSE_SEND_FD] = -1;
+#endif
+
+ asyncns->current_index = asyncns->current_id = 0;
+ asyncns->done_head = asyncns->done_tail = NULL;
+ asyncns->n_queries = 0;
+
+ fd_nonblock(asyncns->fds[RESPONSE_RECV_FD]);
+
+ return asyncns;
+
+fail:
+ if (asyncns)
+ _g_asyncns_free(asyncns);
+
+ return NULL;
+}
+
+void _g_asyncns_free(_g_asyncns_t *asyncns) {
+ int i;
+ int saved_errno = errno;
+ unsigned p;
+
+ assert(asyncns);
+
+ asyncns->dead = 1;
+
+ if (asyncns->fds[REQUEST_SEND_FD] >= 0) {
+ rheader_t req;
+
+ memset(&req, 0, sizeof(req));
+ req.type = REQUEST_TERMINATE;
+ req.length = sizeof(req);
+ req.id = 0;
+
+ /* Send one termination packet for each worker */
+ for (p = 0; p < asyncns->valid_workers; p++)
+ send(asyncns->fds[REQUEST_SEND_FD], &req, req.length, MSG_NOSIGNAL);
+ }
+
+ /* Now terminate them and wait until they are gone. */
+ for (p = 0; p < asyncns->valid_workers; p++) {
+#ifndef HAVE_PTHREAD
+ kill(asyncns->workers[p], SIGTERM);
+ for (;;) {
+ if (waitpid(asyncns->workers[p], NULL, 0) >= 0 || errno != EINTR)
+ break;
+ }
+#else
+ for (;;) {
+ if (pthread_join(asyncns->workers[p], NULL) != EINTR)
+ break;
+ }
+#endif
+ }
+
+ /* Close all communication channels */
+ for (i = 0; i < MESSAGE_FD_MAX; i++)
+ if (asyncns->fds[i] >= 0)
+ close(asyncns->fds[i]);
+
+ for (p = 0; p < MAX_QUERIES; p++)
+ if (asyncns->queries[p])
+ _g_asyncns_cancel(asyncns, asyncns->queries[p]);
+
+ free(asyncns);
+
+ errno = saved_errno;
+}
+
+int _g_asyncns_fd(_g_asyncns_t *asyncns) {
+ assert(asyncns);
+
+ return asyncns->fds[RESPONSE_RECV_FD];
+}
+
+static _g_asyncns_query_t *lookup_query(_g_asyncns_t *asyncns, unsigned id) {
+ _g_asyncns_query_t *q;
+ assert(asyncns);
+
+ if ((q = asyncns->queries[id % MAX_QUERIES]))
+ if (q->id == id)
+ return q;
+
+ return NULL;
+}
+
+static void complete_query(_g_asyncns_t *asyncns, _g_asyncns_query_t *q) {
+ assert(asyncns);
+ assert(q);
+ assert(!q->done);
+
+ q->done = 1;
+
+ if ((q->done_prev = asyncns->done_tail))
+ asyncns->done_tail->done_next = q;
+ else
+ asyncns->done_head = q;
+
+ asyncns->done_tail = q;
+ q->done_next = NULL;
+}
+
+static void *unserialize_addrinfo(void *p, struct addrinfo **ret_ai, size_t *length) {
+ addrinfo_serialization_t s;
+ size_t l;
+ struct addrinfo *ai;
+ assert(p);
+ assert(ret_ai);
+ assert(length);
+
+ if (*length < sizeof(addrinfo_serialization_t))
+ return NULL;
+
+ memcpy(&s, p, sizeof(s));
+
+ l = sizeof(addrinfo_serialization_t) + s.ai_addrlen + s.canonname_len;
+ if (*length < l)
+ return NULL;
+
+ if (!(ai = malloc(sizeof(struct addrinfo))))
+ goto fail;
+
+ ai->ai_addr = NULL;
+ ai->ai_canonname = NULL;
+ ai->ai_next = NULL;
+
+ if (s.ai_addrlen && !(ai->ai_addr = malloc(s.ai_addrlen)))
+ goto fail;
+
+ if (s.canonname_len && !(ai->ai_canonname = malloc(s.canonname_len)))
+ goto fail;
+
+ ai->ai_flags = s.ai_flags;
+ ai->ai_family = s.ai_family;
+ ai->ai_socktype = s.ai_socktype;
+ ai->ai_protocol = s.ai_protocol;
+ ai->ai_addrlen = s.ai_addrlen;
+
+ if (ai->ai_addr)
+ memcpy(ai->ai_addr, (uint8_t*) p + sizeof(addrinfo_serialization_t), s.ai_addrlen);
+
+ if (ai->ai_canonname)
+ memcpy(ai->ai_canonname, (uint8_t*) p + sizeof(addrinfo_serialization_t) + s.ai_addrlen, s.canonname_len);
+
+ *length -= l;
+ *ret_ai = ai;
+
+ return (uint8_t*) p + l;
+
+
+fail:
+ if (ai)
+ _g_asyncns_freeaddrinfo(ai);
+
+ return NULL;
+}
+
+static int handle_response(_g_asyncns_t *asyncns, rheader_t *resp, size_t length) {
+ _g_asyncns_query_t *q;
+ assert(asyncns);
+ assert(resp);
+ assert(length >= sizeof(rheader_t));
+ assert(length == resp->length);
+
+ if (resp->type == RESPONSE_DIED) {
+ asyncns->dead = 1;
+ return 0;
+ }
+
+ if (!(q = lookup_query(asyncns, resp->id)))
+ return 0;
+
+ switch (resp->type) {
+ case RESPONSE_ADDRINFO: {
+ const addrinfo_response_t *ai_resp = (addrinfo_response_t*) resp;
+ void *p;
+ size_t l;
+ struct addrinfo *prev = NULL;
+
+ assert(length >= sizeof(addrinfo_response_t));
+ assert(q->type == REQUEST_ADDRINFO);
+
+ q->ret = ai_resp->ret;
+ q->_errno = ai_resp->_errno;
+ q->_h_errno = ai_resp->_h_errno;
+ l = length - sizeof(addrinfo_response_t);
+ p = (uint8_t*) resp + sizeof(addrinfo_response_t);
+
+ while (l > 0 && p) {
+ struct addrinfo *ai = NULL;
+ p = unserialize_addrinfo(p, &ai, &l);
+
+ if (!p || !ai) {
+ q->ret = EAI_MEMORY;
+ break;
+ }
+
+ if (prev)
+ prev->ai_next = ai;
+ else
+ q->addrinfo = ai;
+
+ prev = ai;
+ }
+
+ complete_query(asyncns, q);
+ break;
+ }
+
+ case RESPONSE_NAMEINFO: {
+ const nameinfo_response_t *ni_resp = (nameinfo_response_t*) resp;
+
+ assert(length >= sizeof(nameinfo_response_t));
+ assert(q->type == REQUEST_NAMEINFO);
+
+ q->ret = ni_resp->ret;
+ q->_errno = ni_resp->_errno;
+ q->_h_errno = ni_resp->_h_errno;
+
+ if (ni_resp->hostlen)
+ if (!(q->host = strndup((const char*) ni_resp + sizeof(nameinfo_response_t), ni_resp->hostlen-1)))
+ q->ret = EAI_MEMORY;
+
+ if (ni_resp->servlen)
+ if (!(q->serv = strndup((const char*) ni_resp + sizeof(nameinfo_response_t) + ni_resp->hostlen, ni_resp->servlen-1)))
+ q->ret = EAI_MEMORY;
+
+ complete_query(asyncns, q);
+ break;
+ }
+
+ case RESPONSE_RES: {
+ const res_response_t *res_resp = (res_response_t *)resp;
+
+ assert(length >= sizeof(res_response_t));
+ assert(q->type == REQUEST_RES_QUERY || q->type == REQUEST_RES_SEARCH);
+
+ q->ret = res_resp->ret;
+ q->_errno = res_resp->_errno;
+ q->_h_errno = res_resp->_h_errno;
+
+ if (res_resp->ret >= 0) {
+ if (!(q->serv = malloc(res_resp->ret))) {
+ q->ret = -1;
+ q->_errno = ENOMEM;
+ } else
+ memcpy(q->serv, (char *)resp + sizeof(res_response_t), res_resp->ret);
+ }
+
+ complete_query(asyncns, q);
+ break;
+ }
+
+ default:
+ ;
+ }
+
+ return 0;
+}
+
+int _g_asyncns_wait(_g_asyncns_t *asyncns, int block) {
+ int handled = 0;
+ assert(asyncns);
+
+ for (;;) {
+ rheader_t buf[BUFSIZE/sizeof(rheader_t) + 1];
+ ssize_t l;
+
+ if (asyncns->dead) {
+ errno = ECHILD;
+ return -1;
+ }
+
+ if (((l = recv(asyncns->fds[RESPONSE_RECV_FD], buf, sizeof(buf), 0)) < 0)) {
+ fd_set fds;
+
+ if (errno != EAGAIN)
+ return -1;
+
+ if (!block || handled)
+ return 0;
+
+ FD_ZERO(&fds);
+ FD_SET(asyncns->fds[RESPONSE_RECV_FD], &fds);
+
+ if (select(asyncns->fds[RESPONSE_RECV_FD]+1, &fds, NULL, NULL, NULL) < 0)
+ return -1;
+
+ continue;
+ }
+
+ if (handle_response(asyncns, buf, (size_t) l) < 0)
+ return -1;
+
+ handled = 1;
+ }
+}
+
+static _g_asyncns_query_t *alloc_query(_g_asyncns_t *asyncns) {
+ _g_asyncns_query_t *q;
+ assert(asyncns);
+
+ if (asyncns->n_queries >= MAX_QUERIES) {
+ errno = ENOMEM;
+ return NULL;
+ }
+
+ while (asyncns->queries[asyncns->current_index]) {
+
+ asyncns->current_index++;
+ asyncns->current_id++;
+
+ while (asyncns->current_index >= MAX_QUERIES)
+ asyncns->current_index -= MAX_QUERIES;
+ }
+
+ if (!(q = asyncns->queries[asyncns->current_index] = malloc(sizeof(_g_asyncns_query_t)))) {
+ errno = ENOMEM;
+ return NULL;
+ }
+
+ asyncns->n_queries++;
+
+ q->asyncns = asyncns;
+ q->done = 0;
+ q->id = asyncns->current_id;
+ q->done_next = q->done_prev = NULL;
+ q->ret = 0;
+ q->_errno = 0;
+ q->_h_errno = 0;
+ q->addrinfo = NULL;
+ q->userdata = NULL;
+ q->host = q->serv = NULL;
+
+ return q;
+}
+
+_g_asyncns_query_t* _g_asyncns_getaddrinfo(_g_asyncns_t *asyncns, const char *node, const char *service, const struct addrinfo *hints) {
+ addrinfo_request_t data[BUFSIZE/sizeof(addrinfo_request_t) + 1];
+ addrinfo_request_t *req = data;
+ _g_asyncns_query_t *q;
+ assert(asyncns);
+ assert(node || service);
+
+ if (asyncns->dead) {
+ errno = ECHILD;
+ return NULL;
+ }
+
+ if (!(q = alloc_query(asyncns)))
+ return NULL;
+
+ memset(req, 0, sizeof(addrinfo_request_t));
+
+ req->node_len = node ? strlen(node)+1 : 0;
+ req->service_len = service ? strlen(service)+1 : 0;
+
+ req->header.id = q->id;
+ req->header.type = q->type = REQUEST_ADDRINFO;
+ req->header.length = sizeof(addrinfo_request_t) + req->node_len + req->service_len;
+
+ if (req->header.length > BUFSIZE) {
+ errno = ENOMEM;
+ goto fail;
+ }
+
+ if (!(req->hints_is_null = !hints)) {
+ req->ai_flags = hints->ai_flags;
+ req->ai_family = hints->ai_family;
+ req->ai_socktype = hints->ai_socktype;
+ req->ai_protocol = hints->ai_protocol;
+ }
+
+ if (node)
+ strcpy((char*) req + sizeof(addrinfo_request_t), node);
+
+ if (service)
+ strcpy((char*) req + sizeof(addrinfo_request_t) + req->node_len, service);
+
+ if (send(asyncns->fds[REQUEST_SEND_FD], req, req->header.length, MSG_NOSIGNAL) < 0)
+ goto fail;
+
+ return q;
+
+fail:
+ if (q)
+ _g_asyncns_cancel(asyncns, q);
+
+ return NULL;
+}
+
+int _g_asyncns_getaddrinfo_done(_g_asyncns_t *asyncns, _g_asyncns_query_t* q, struct addrinfo **ret_res) {
+ int ret;
+ assert(asyncns);
+ assert(q);
+ assert(q->asyncns == asyncns);
+ assert(q->type == REQUEST_ADDRINFO);
+
+ if (asyncns->dead) {
+ errno = ECHILD;
+ return EAI_SYSTEM;
+ }
+
+ if (!q->done)
+ return EAI_AGAIN;
+
+ *ret_res = q->addrinfo;
+ q->addrinfo = NULL;
+
+ ret = q->ret;
+
+ if (ret == EAI_SYSTEM)
+ errno = q->_errno;
+
+ if (ret != 0)
+ h_errno = q->_h_errno;
+
+ _g_asyncns_cancel(asyncns, q);
+
+ return ret;
+}
+
+_g_asyncns_query_t* _g_asyncns_getnameinfo(_g_asyncns_t *asyncns, const struct sockaddr *sa, socklen_t salen, int flags, int gethost, int getserv) {
+ nameinfo_request_t data[BUFSIZE/sizeof(nameinfo_request_t) + 1];
+ nameinfo_request_t *req = data;
+ _g_asyncns_query_t *q;
+
+ assert(asyncns);
+ assert(sa);
+ assert(salen > 0);
+
+ if (asyncns->dead) {
+ errno = ECHILD;
+ return NULL;
+ }
+
+ if (!(q = alloc_query(asyncns)))
+ return NULL;
+
+ memset(req, 0, sizeof(nameinfo_request_t));
+
+ req->header.id = q->id;
+ req->header.type = q->type = REQUEST_NAMEINFO;
+ req->header.length = sizeof(nameinfo_request_t) + salen;
+
+ if (req->header.length > BUFSIZE) {
+ errno = ENOMEM;
+ goto fail;
+ }
+
+ req->flags = flags;
+ req->sockaddr_len = salen;
+ req->gethost = gethost;
+ req->getserv = getserv;
+
+ memcpy((uint8_t*) req + sizeof(nameinfo_request_t), sa, salen);
+
+ if (send(asyncns->fds[REQUEST_SEND_FD], req, req->header.length, MSG_NOSIGNAL) < 0)
+ goto fail;
+
+ return q;
+
+fail:
+ if (q)
+ _g_asyncns_cancel(asyncns, q);
+
+ return NULL;
+}
+
+int _g_asyncns_getnameinfo_done(_g_asyncns_t *asyncns, _g_asyncns_query_t* q, char *ret_host, size_t hostlen, char *ret_serv, size_t servlen) {
+ int ret;
+ assert(asyncns);
+ assert(q);
+ assert(q->asyncns == asyncns);
+ assert(q->type == REQUEST_NAMEINFO);
+ assert(!ret_host || hostlen);
+ assert(!ret_serv || servlen);
+
+ if (asyncns->dead) {
+ errno = ECHILD;
+ return EAI_SYSTEM;
+ }
+
+ if (!q->done)
+ return EAI_AGAIN;
+
+ if (ret_host && q->host) {
+ strncpy(ret_host, q->host, hostlen);
+ ret_host[hostlen-1] = 0;
+ }
+
+ if (ret_serv && q->serv) {
+ strncpy(ret_serv, q->serv, servlen);
+ ret_serv[servlen-1] = 0;
+ }
+
+ ret = q->ret;
+
+ if (ret == EAI_SYSTEM)
+ errno = q->_errno;
+
+ if (ret != 0)
+ h_errno = q->_h_errno;
+
+ _g_asyncns_cancel(asyncns, q);
+
+ return ret;
+}
+
+static _g_asyncns_query_t * _g_asyncns_res(_g_asyncns_t *asyncns, query_type_t qtype, const char *dname, int class, int type) {
+ res_request_t data[BUFSIZE/sizeof(res_request_t) + 1];
+ res_request_t *req = data;
+ _g_asyncns_query_t *q;
+
+ assert(asyncns);
+ assert(dname);
+
+ if (asyncns->dead) {
+ errno = ECHILD;
+ return NULL;
+ }
+
+ if (!(q = alloc_query(asyncns)))
+ return NULL;
+
+ memset(req, 0, sizeof(res_request_t));
+
+ req->dname_len = strlen(dname) + 1;
+
+ req->header.id = q->id;
+ req->header.type = q->type = qtype;
+ req->header.length = sizeof(res_request_t) + req->dname_len;
+
+ if (req->header.length > BUFSIZE) {
+ errno = ENOMEM;
+ goto fail;
+ }
+
+ req->class = class;
+ req->type = type;
+
+ strcpy((char*) req + sizeof(res_request_t), dname);
+
+ if (send(asyncns->fds[REQUEST_SEND_FD], req, req->header.length, MSG_NOSIGNAL) < 0)
+ goto fail;
+
+ return q;
+
+fail:
+ if (q)
+ _g_asyncns_cancel(asyncns, q);
+
+ return NULL;
+}
+
+_g_asyncns_query_t* _g_asyncns_res_query(_g_asyncns_t *asyncns, const char *dname, int class, int type) {
+ return _g_asyncns_res(asyncns, REQUEST_RES_QUERY, dname, class, type);
+}
+
+_g_asyncns_query_t* _g_asyncns_res_search(_g_asyncns_t *asyncns, const char *dname, int class, int type) {
+ return _g_asyncns_res(asyncns, REQUEST_RES_SEARCH, dname, class, type);
+}
+
+int _g_asyncns_res_done(_g_asyncns_t *asyncns, _g_asyncns_query_t* q, unsigned char **answer) {
+ int ret;
+ assert(asyncns);
+ assert(q);
+ assert(q->asyncns == asyncns);
+ assert(q->type == REQUEST_RES_QUERY || q->type == REQUEST_RES_SEARCH);
+ assert(answer);
+
+ if (asyncns->dead) {
+ errno = ECHILD;
+ return -ECHILD;
+ }
+
+ if (!q->done) {
+ errno = EAGAIN;
+ return -EAGAIN;
+ }
+
+ *answer = (unsigned char *)q->serv;
+ q->serv = NULL;
+
+ ret = q->ret;
+
+ if (ret < 0) {
+ errno = q->_errno;
+ h_errno = q->_h_errno;
+ }
+
+ _g_asyncns_cancel(asyncns, q);
+
+ return ret < 0 ? -errno : ret;
+}
+
+_g_asyncns_query_t* _g_asyncns_getnext(_g_asyncns_t *asyncns) {
+ assert(asyncns);
+ return asyncns->done_head;
+}
+
+int _g_asyncns_getnqueries(_g_asyncns_t *asyncns) {
+ assert(asyncns);
+ return asyncns->n_queries;
+}
+
+void _g_asyncns_cancel(_g_asyncns_t *asyncns, _g_asyncns_query_t* q) {
+ int i;
+ int saved_errno = errno;
+
+ assert(asyncns);
+ assert(q);
+ assert(q->asyncns == asyncns);
+ assert(asyncns->n_queries > 0);
+
+ if (q->done) {
+
+ if (q->done_prev)
+ q->done_prev->done_next = q->done_next;
+ else
+ asyncns->done_head = q->done_next;
+
+ if (q->done_next)
+ q->done_next->done_prev = q->done_prev;
+ else
+ asyncns->done_tail = q->done_prev;
+ }
+
+ i = q->id % MAX_QUERIES;
+ assert(asyncns->queries[i] == q);
+ asyncns->queries[i] = NULL;
+
+ _g_asyncns_freeaddrinfo(q->addrinfo);
+ free(q->host);
+ free(q->serv);
+
+ asyncns->n_queries--;
+ free(q);
+
+ errno = saved_errno;
+}
+
+void _g_asyncns_freeaddrinfo(struct addrinfo *ai) {
+ int saved_errno = errno;
+
+ while (ai) {
+ struct addrinfo *next = ai->ai_next;
+
+ free(ai->ai_addr);
+ free(ai->ai_canonname);
+ free(ai);
+
+ ai = next;
+ }
+
+ errno = saved_errno;
+}
+
+void _g_asyncns_freeanswer(unsigned char *answer) {
+ int saved_errno = errno;
+
+ if (!answer)
+ return;
+
+ /* Please note that this function is new in libasyncns 0.4. In
+ * older versions you were supposed to free the answer directly
+ * with free(). Hence, if this function is changed to do more than
+ * just a simple free() this must be considered ABI/API breakage! */
+
+ free(answer);
+
+ errno = saved_errno;
+}
+
+int _g_asyncns_isdone(_g_asyncns_t *asyncns, _g_asyncns_query_t*q) {
+ assert(asyncns);
+ assert(q);
+ assert(q->asyncns == asyncns);
+
+ return q->done;
+}
+
+void _g_asyncns_setuserdata(_g_asyncns_t *asyncns, _g_asyncns_query_t *q, void *userdata) {
+ assert(q);
+ assert(asyncns);
+ assert(q->asyncns = asyncns);
+
+ q->userdata = userdata;
+}
+
+void* _g_asyncns_getuserdata(_g_asyncns_t *asyncns, _g_asyncns_query_t *q) {
+ assert(q);
+ assert(asyncns);
+ assert(q->asyncns = asyncns);
+
+ return q->userdata;
+}
diff --git a/gio/libasyncns/asyncns.h b/gio/libasyncns/asyncns.h
new file mode 100644
index 0000000..b3d49ff
--- /dev/null
+++ b/gio/libasyncns/asyncns.h
@@ -0,0 +1,163 @@
+#ifndef fooasyncnshfoo
+#define fooasyncnshfoo
+
+/***
+ This file is part of libasyncns.
+
+ Copyright 2005-2008 Lennart Poettering
+
+ libasyncns is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation, either version 2.1 of the
+ License, or (at your option) any later version.
+
+ libasyncns is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with libasyncns. If not, see
+ <http://www.gnu.org/licenses/>.
+***/
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+
+/** \mainpage
+ *
+ * \section moo Method of operation
+ *
+ * To use libasyncns allocate an _g_asyncns_t object with
+ * _g_asyncns_new(). This will spawn a number of worker threads (or processes, depending on what is available) which
+ * are subsequently used to process the queries the controlling
+ * program issues via _g_asyncns_getaddrinfo() and
+ * _g_asyncns_getnameinfo(). Use _g_asyncns_free() to shut down the worker
+ * threads/processes.
+ *
+ * Since libasyncns may fork off new processes you have to make sure that
+ * your program is not irritated by spurious SIGCHLD signals.
+ */
+
+/** \example asyncns-test.c
+ * An example program */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** An opaque libasyncns session structure */
+typedef struct asyncns _g_asyncns_t;
+
+/** An opaque libasyncns query structure */
+typedef struct _g_asyncns_query _g_asyncns_query_t;
+
+/** Allocate a new libasyncns session with n_proc worker processes/threads */
+_g_asyncns_t* _g_asyncns_new(unsigned n_proc);
+
+/** Free a libasyncns session. This destroys all attached
+ * _g_asyncns_query_t objects automatically */
+void _g_asyncns_free(_g_asyncns_t *asyncns);
+
+/** Return the UNIX file descriptor to select() for readability
+ * on. Use this function to integrate libasyncns with your custom main
+ * loop. */
+int _g_asyncns_fd(_g_asyncns_t *asyncns);
+
+/** Process pending responses. After this function is called you can
+ * get the next completed query object(s) using _g_asyncns_getnext(). If
+ * block is non-zero wait until at least one response has been
+ * processed. If block is zero, process all pending responses and
+ * return. */
+int _g_asyncns_wait(_g_asyncns_t *asyncns, int block);
+
+/** Issue a name to address query on the specified session. The
+ * arguments are compatible with the ones of libc's
+ * getaddrinfo(3). The function returns a new query object. When the
+ * query is completed you may retrieve the results using
+ * _g_asyncns_getaddrinfo_done().*/
+_g_asyncns_query_t* _g_asyncns_getaddrinfo(_g_asyncns_t *asyncns, const char *node, const char *service, const struct addrinfo *hints);
+
+/** Retrieve the results of a preceding _g_asyncns_getaddrinfo()
+ * call. Returns a addrinfo structure and a return value compatible
+ * with libc's getaddrinfo(3). The query object q is destroyed by this
+ * call and may not be used any further. Make sure to free the
+ * returned addrinfo structure with _g_asyncns_freeaddrinfo() and not
+ * libc's freeaddrinfo(3)! If the query is not completed yet EAI_AGAIN
+ * is returned.*/
+int _g_asyncns_getaddrinfo_done(_g_asyncns_t *asyncns, _g_asyncns_query_t* q, struct addrinfo **ret_res);
+
+/** Issue an address to name query on the specified session. The
+ * arguments are compatible with the ones of libc's
+ * getnameinfo(3). The function returns a new query object. When the
+ * query is completed you may retrieve the results using
+ * _g_asyncns_getnameinfo_done(). Set gethost (resp. getserv) to non-zero
+ * if you want to query the hostname (resp. the service name). */
+_g_asyncns_query_t* _g_asyncns_getnameinfo(_g_asyncns_t *asyncns, const struct sockaddr *sa, socklen_t salen, int flags, int gethost, int getserv);
+
+/** Retrieve the results of a preceding _g_asyncns_getnameinfo()
+ * call. Returns the hostname and the service name in ret_host and
+ * ret_serv. The query object q is destroyed by this call and may not
+ * be used any further. If the query is not completed yet EAI_AGAIN is
+ * returned. */
+int _g_asyncns_getnameinfo_done(_g_asyncns_t *asyncns, _g_asyncns_query_t* q, char *ret_host, size_t hostlen, char *ret_serv, size_t servlen);
+
+/** Issue a resolver query on the specified session. The arguments are
+ * compatible with the ones of libc's res_query(3). The function returns a new
+ * query object. When the query is completed you may retrieve the results using
+ * _g_asyncns_res_done(). */
+_g_asyncns_query_t* _g_asyncns_res_query(_g_asyncns_t *asyncns, const char *dname, int class, int type);
+
+/** Issue an resolver query on the specified session. The arguments are
+ * compatible with the ones of libc's res_search(3). The function returns a new
+ * query object. When the query is completed you may retrieve the results using
+ * _g_asyncns_res_done(). */
+_g_asyncns_query_t* _g_asyncns_res_search(_g_asyncns_t *asyncns, const char *dname, int class, int type);
+
+/** Retrieve the results of a preceding _g_asyncns_res_query() or
+ * _g_asyncns_res_search call. The query object q is destroyed by this
+ * call and may not be used any further. Returns a pointer to the
+ * answer of the res_query call. If the query is not completed yet
+ * -EAGAIN is returned, on failure -errno is returned, otherwise the
+ * length of answer is returned. Make sure to free the answer is a
+ * call to _g_asyncns_freeanswer(). */
+int _g_asyncns_res_done(_g_asyncns_t *asyncns, _g_asyncns_query_t* q, unsigned char **answer);
+
+/** Return the next completed query object. If no query has been
+ * completed yet, return NULL. Please note that you need to run
+ * _g_asyncns_wait() before this function will return sensible data. */
+_g_asyncns_query_t* _g_asyncns_getnext(_g_asyncns_t *asyncns);
+
+/** Return the number of query objects (completed or not) attached to
+ * this session */
+int _g_asyncns_getnqueries(_g_asyncns_t *asyncns);
+
+/** Cancel a currently running query. q is is destroyed by this call
+ * and may not be used any futher. */
+void _g_asyncns_cancel(_g_asyncns_t *asyncns, _g_asyncns_query_t* q);
+
+/** Free the addrinfo structure as returned by
+ * _g_asyncns_getaddrinfo_done(). Make sure to use this functions instead
+ * of the libc's freeaddrinfo()! */
+void _g_asyncns_freeaddrinfo(struct addrinfo *ai);
+
+/** Free the answer data as returned by _g_asyncns_res_done().*/
+void _g_asyncns_freeanswer(unsigned char *answer);
+
+/** Returns non-zero when the query operation specified by q has been completed */
+int _g_asyncns_isdone(_g_asyncns_t *asyncns, _g_asyncns_query_t*q);
+
+/** Assign some opaque userdata with a query object */
+void _g_asyncns_setuserdata(_g_asyncns_t *asyncns, _g_asyncns_query_t *q, void *userdata);
+
+/** Return userdata assigned to a query object. Use
+ * _g_asyncns_setuserdata() to set this data. If no data has been set
+ * prior to this call it returns NULL. */
+void* _g_asyncns_getuserdata(_g_asyncns_t *asyncns, _g_asyncns_query_t *q);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/gio/libasyncns/g-asyncns.h b/gio/libasyncns/g-asyncns.h
new file mode 100644
index 0000000..a40fadb
--- /dev/null
+++ b/gio/libasyncns/g-asyncns.h
@@ -0,0 +1,28 @@
+/* GLIB - Library of useful routines for C programming
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+#ifndef __G_ASYNCNS_H__
+
+#include "config.h"
+
+#define _GNU_SOURCE
+#undef HAVE_PTHREAD
+
+#include "asyncns.h"
+
+#endif
diff --git a/gio/libasyncns/update.sh b/gio/libasyncns/update.sh
new file mode 100644
index 0000000..4c43ca5
--- /dev/null
+++ b/gio/libasyncns/update.sh
@@ -0,0 +1,20 @@
+#!/bin/sh
+
+if test $# = 1 ; then
+ ORIGINAL=$1
+else
+ echo "Usage: update.sh /path/to/libasyncns" 1>&2
+ exit 1
+fi
+
+if test -f $ORIGINAL/libasyncns/asyncns.c ; then : ; else
+ echo "Usage: update.sh /path/to/libasyncns" 1>&2
+ exit 1
+fi
+
+for i in asyncns.c asyncns.h ; do
+ sed -e 's/\([^a-z]\)asyncns_/\1_g_asyncns_/g' \
+ -e 's/^asyncns_/_g_asyncns_/' \
+ -e 's/<config\.h>/"g-asyncns\.h"/' \
+ $ORIGINAL/libasyncns/$i > $i
+done
diff --git a/gio/pltcheck.sh b/gio/pltcheck.sh
index e09a587..be29be8 100755
--- a/gio/pltcheck.sh
+++ b/gio/pltcheck.sh
@@ -9,7 +9,7 @@ if ! which readelf 2>/dev/null >/dev/null; then
exit 0
fi
-SKIP='\<g_access\|\<g_array_\|\<g_ascii\|\<g_list_\|\<g_assertion_message\|\<g_warn_message\|\<g_atomic\|\<g_build_filename\|\<g_byte_array\|\<g_child_watch\|\<g_convert\|\<g_dir_\|\<g_error_\|\<g_clear_error\|\<g_file_error_quark\|\<g_file_get_contents\|\<g_file_set_contents\|\<g_file_test\|\<g_file_read_link\|\<g_filename_\|\<g_find_program_in_path\|\<g_free\|\<g_get_\|\<g_getenv\|\<g_hash_table_\|\<g_idle_\|\<g_intern_static_string\|\<g_io_channel_\|\<g_key_file_\|\<g_listenv\|\<g_locale_to_utf8\|\<g_log\|\<g_main_context_wakeup\|\<g_malloc\|\<g_markup_\|\<g_mkdir_\|\<g_mkstemp\|\<g_module_\|\<g_object_\|\<g_once_\|\<g_param_spec_\|\<g_path_\|\<g_printerr\|\<g_propagate_error\|\<g_ptr_array_\|\<g_qsort_\|\<g_quark_\|\<g_queue_\|\<g_realloc\|\<g_return_if_fail\|\<g_set_error\|\<g_shell_\|\<g_signal_\|\<g_slice_\|\<g_slist_\|\<g_snprintf\|\<g_source_\|\<g_spawn_\|\<g_static_\|\<g_str\|\<g_thread_pool_\|\<g_time_val_add\|\<g_timeout_\|\<g_type_\|\<g_unlink\|\<g_uri_\|\<g_utf
8_\|\<g_value_\|\<g_enum_\|\<g_flags_\|\<g_checksum\|\<g_io_add_watch\|\<g_bit_\|\<g_poll\|\<g_boxed'
+SKIP='\<g_access\|\<g_array_\|\<g_ascii\|\<g_list_\|\<g_assertion_message\|\<g_warn_message\|\<g_atomic\|\<g_bit_\|\<g_boxed\|\<g_build_filename\|\<g_byte_array\|\<g_checksum\|\<g_child_watch\|\<g_clear_error\|\<g_convert\|\<g_dir_\|\<g_enum_\|\<g_error_\|\<g_file_error_quark\|\<g_file_get_contents\|\<g_file_set_contents\|\<g_file_test\|\<g_file_read_link\|\<g_filename_\|\<g_find_program_in_path\|\<g_flags_\|\<g_free\|\<g_get_\|\<g_getenv\|\<g_hash_table_\|\<g_hostname_\|\<g_idle_\|\<g_intern_static_string\|\<g_io_add_watch\|\<g_io_channel_\|\<g_key_file_\|\<g_listenv\|\<g_locale_to_utf8\|\<g_log\|\<g_main_context_wakeup\|\<g_malloc\|\<g_markup_\|\<g_mkdir_\|\<g_mkstemp\|\<g_module_\|\<g_object_\|\<g_once_\|\<g_param_spec_\|\<g_path_\|\<g_poll\|\<g_printerr\|\<g_propagate_error\|\<g_ptr_array_\|\<g_qsort_\|\<g_quark_\|\<g_queue_\|\<g_random_int_range\|\<g_realloc\|\<g_return_if_fail\|\<g_set_error\|\<g_shell_\|\<g_signal_\|\<g_slice_\|\<g_slist_\|\<g_snprintf\|\<g_source_\|\
<g_spawn_\|\<g_static_\|\<g_str\|\<g_thread_pool_\|\<g_time_val_add\|\<g_timeout_\|\<g_type_\|\<g_unlink\|\<g_uri_\|\<g_utf8_\|\<g_value_'
for so in .libs/lib*.so; do
echo Checking $so for local PLT entries
diff --git a/gio/tests/.gitignore b/gio/tests/.gitignore
index cb94852..d9f5601 100644
--- a/gio/tests/.gitignore
+++ b/gio/tests/.gitignore
@@ -12,3 +12,4 @@ memory-input-stream
memory-output-stream
filter-streams
sleepy-stream
+resolver
diff --git a/gio/tests/Makefile.am b/gio/tests/Makefile.am
index 70a9ae8..eddaaa2 100644
--- a/gio/tests/Makefile.am
+++ b/gio/tests/Makefile.am
@@ -9,7 +9,7 @@ INCLUDES = \
-I$(top_srcdir)/gio \
$(GLIB_DEBUG_FLAGS)
-noinst_PROGRAMS = $(TEST_PROGS)
+noinst_PROGRAMS = $(TEST_PROGS) $(SAMPLE_PROGS)
progs_ldadd = \
$(top_builddir)/glib/libglib-2.0.la \
$(top_builddir)/gobject/libgobject-2.0.la \
@@ -29,6 +29,8 @@ TEST_PROGS += \
filter-streams \
simple-async-result
+SAMPLE_PROGS = resolver
+
if OS_UNIX
TEST_PROGS += live-g-file unix-streams desktop-app-info
endif
@@ -76,4 +78,8 @@ sleepy_stream_LDADD = $(progs_ldadd)
filter_streams_SOURCES = filter-streams.c
filter_streams_LDADD = $(progs_ldadd)
+resolver_SOURCES = resolver.c
+resolver_LDADD = $(progs_ldadd) \
+ $(top_builddir)/gthread/libgthread-2.0.la
+
DISTCLEAN_FILES = applications/mimeinfo.cache
diff --git a/gio/tests/resolver.c b/gio/tests/resolver.c
new file mode 100644
index 0000000..8ee9166
--- /dev/null
+++ b/gio/tests/resolver.c
@@ -0,0 +1,377 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "config.h"
+#include <glib.h>
+#include "glibintl.h"
+
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <gio/gio.h>
+
+static GResolver *resolver;
+static GCancellable *cancellable;
+static GMainLoop *loop;
+static int nlookups = 0;
+
+static void
+usage (void)
+{
+ fprintf (stderr, "Usage: resolver [-t] [-s] [hostname | IP | service/protocol/domain ] ...\n");
+ fprintf (stderr, " Use -t to enable threading.\n");
+ fprintf (stderr, " Use -s to do synchronous lookups.\n");
+ fprintf (stderr, " Both together will result in simultaneous lookups in multiple threads\n");
+ exit (1);
+}
+
+G_LOCK_DEFINE_STATIC (response);
+
+static void
+done_lookup (void)
+{
+ nlookups--;
+ if (nlookups == 0)
+ {
+ /* In the sync case we need to make sure we don't call
+ * g_main_loop_quit before the loop is actually running...
+ */
+ g_idle_add ((GSourceFunc)g_main_loop_quit, loop);
+ }
+}
+
+static void
+print_resolved_name (const char *phys,
+ char *name,
+ GError *error)
+{
+ G_LOCK (response);
+ printf ("Address: %s\n", phys);
+ if (error)
+ {
+ printf ("Error: %s\n", error->message);
+ g_error_free (error);
+ }
+ else
+ {
+ printf ("Name: %s\n", name);
+ g_free (name);
+ }
+ printf ("\n");
+
+ done_lookup ();
+ G_UNLOCK (response);
+}
+
+static void
+print_resolved_addresses (const char *name,
+ GList *addresses,
+ GError *error)
+{
+ char *phys;
+ GList *a;
+
+ G_LOCK (response);
+ printf ("Name: %s\n", name);
+ if (error)
+ {
+ printf ("Error: %s\n", error->message);
+ g_error_free (error);
+ }
+ else
+ {
+ for (a = addresses; a; a = a->next)
+ {
+ phys = g_inet_address_to_string (a->data);
+ printf ("Address: %s\n", phys);
+ g_free (phys);
+ g_object_unref (a->data);
+ }
+ g_list_free (addresses);
+ }
+ printf ("\n");
+
+ done_lookup ();
+ G_UNLOCK (response);
+}
+
+static void
+print_resolved_service (const char *service,
+ GList *targets,
+ GError *error)
+{
+ GList *t;
+
+ G_LOCK (response);
+ printf ("Service: %s\n", service);
+ if (error)
+ {
+ printf ("Error: %s\n", error->message);
+ g_error_free (error);
+ }
+ else
+ {
+ for (t = targets; t; t = t->next)
+ {
+ printf ("%s:%u (pri %u, weight %u)\n",
+ g_srv_target_get_hostname (t->data),
+ g_srv_target_get_port (t->data),
+ g_srv_target_get_priority (t->data),
+ g_srv_target_get_weight (t->data));
+ g_srv_target_free (t->data);
+ }
+ g_list_free (targets);
+ }
+ printf ("\n");
+
+ done_lookup ();
+ G_UNLOCK (response);
+}
+
+static void
+lookup_one_sync (const char *arg)
+{
+ GError *error = NULL;
+
+ if (strchr (arg, '/'))
+ {
+ GList *targets;
+ /* service/protocol/domain */
+ char **parts = g_strsplit (arg, "/", 3);
+
+ if (!parts || !parts[2])
+ usage ();
+
+ targets = g_resolver_lookup_service (resolver,
+ parts[0], parts[1], parts[2],
+ cancellable, &error);
+ print_resolved_service (arg, targets, error);
+ }
+ else if (g_hostname_is_ip_address (arg))
+ {
+ GInetAddress *addr = g_inet_address_new_from_string (arg);
+ char *name;
+
+ name = g_resolver_lookup_by_address (resolver, addr, cancellable, &error);
+ print_resolved_name (arg, name, error);
+ g_object_unref (addr);
+ }
+ else
+ {
+ GList *addresses;
+
+ addresses = g_resolver_lookup_by_name (resolver, arg, cancellable, &error);
+ print_resolved_addresses (arg, addresses, error);
+ }
+}
+
+static gpointer
+lookup_thread (gpointer arg)
+{
+ lookup_one_sync (arg);
+ return NULL;
+}
+
+static void
+start_threaded_lookups (char **argv, int argc)
+{
+ int i;
+
+ for (i = 0; i < argc; i++)
+ g_thread_create (lookup_thread, argv[i], FALSE, NULL);
+}
+
+static void
+start_sync_lookups (char **argv, int argc)
+{
+ int i;
+
+ for (i = 0; i < argc; i++)
+ lookup_one_sync (argv[i]);
+}
+
+static void
+lookup_by_addr_callback (GObject *source, GAsyncResult *result,
+ gpointer user_data)
+{
+ const char *phys = user_data;
+ GError *error = NULL;
+ char *name;
+
+ name = g_resolver_lookup_by_address_finish (resolver, result, &error);
+ print_resolved_name (phys, name, error);
+}
+
+static void
+lookup_by_name_callback (GObject *source, GAsyncResult *result,
+ gpointer user_data)
+{
+ const char *name = user_data;
+ GError *error = NULL;
+ GList *addresses;
+
+ addresses = g_resolver_lookup_by_name_finish (resolver, result, &error);
+ print_resolved_addresses (name, addresses, error);
+}
+
+static void
+lookup_service_callback (GObject *source, GAsyncResult *result,
+ gpointer user_data)
+{
+ const char *service = user_data;
+ GError *error = NULL;
+ GList *targets;
+
+ targets = g_resolver_lookup_service_finish (resolver, result, &error);
+ print_resolved_service (service, targets, error);
+}
+
+static void
+start_async_lookups (char **argv, int argc)
+{
+ int i;
+
+ for (i = 0; i < argc; i++)
+ {
+ if (strchr (argv[i], '/'))
+ {
+ /* service/protocol/domain */
+ char **parts = g_strsplit (argv[i], "/", 3);
+
+ if (!parts || !parts[2])
+ usage ();
+
+ g_resolver_lookup_service_async (resolver,
+ parts[0], parts[1], parts[2],
+ cancellable,
+ lookup_service_callback, argv[i]);
+ }
+ else if (g_hostname_is_ip_address (argv[i]))
+ {
+ GInetAddress *addr = g_inet_address_new_from_string (argv[i]);
+
+ g_resolver_lookup_by_address_async (resolver, addr, cancellable,
+ lookup_by_addr_callback, argv[i]);
+ g_object_unref (addr);
+ }
+ else
+ {
+ g_resolver_lookup_by_name_async (resolver, argv[i], cancellable,
+ lookup_by_name_callback,
+ argv[i]);
+ }
+ }
+}
+
+#ifdef G_OS_UNIX
+static int cancel_fds[2];
+
+static void
+interrupted (int sig)
+{
+ signal (SIGINT, SIG_DFL);
+ write (cancel_fds[1], "x", 1);
+}
+
+static gboolean
+async_cancel (GIOChannel *source, GIOCondition cond, gpointer cancellable)
+{
+ g_cancellable_cancel (cancellable);
+ return FALSE;
+}
+#endif
+
+int
+main (int argc, char **argv)
+{
+ gboolean threaded = FALSE, synchronous = FALSE;
+#ifdef G_OS_UNIX
+ GIOChannel *chan;
+ guint watch;
+#endif
+
+ /* We can't use GOptionContext because we use the arguments to
+ * decide whether or not to call g_thread_init().
+ */
+ while (argc >= 2 && argv[1][0] == '-')
+ {
+ if (!strcmp (argv[1], "-t"))
+ {
+ g_thread_init (NULL);
+ threaded = TRUE;
+ }
+ else if (!strcmp (argv[1], "-s"))
+ synchronous = TRUE;
+ else
+ usage ();
+
+ argv++;
+ argc--;
+ }
+ g_type_init ();
+
+ if (argc < 2)
+ usage ();
+
+ resolver = g_resolver_get_default ();
+
+ cancellable = g_cancellable_new ();
+
+#ifdef G_OS_UNIX
+ /* Set up cancellation; we want to cancel if the user ^C's the
+ * program, but we can't cancel directly from an interrupt.
+ */
+ signal (SIGINT, interrupted);
+
+ if (pipe (cancel_fds) == -1)
+ {
+ perror ("pipe");
+ exit (1);
+ }
+ chan = g_io_channel_unix_new (cancel_fds[0]);
+ watch = g_io_add_watch (chan, G_IO_IN, async_cancel, cancellable);
+ g_io_channel_unref (chan);
+#endif
+
+ nlookups = argc - 1;
+ loop = g_main_loop_new (NULL, TRUE);
+
+ if (threaded && synchronous)
+ start_threaded_lookups (argv + 1, argc - 1);
+ else if (synchronous)
+ start_sync_lookups (argv + 1, argc - 1);
+ else
+ start_async_lookups (argv + 1, argc - 1);
+
+ g_main_run (loop);
+ g_main_loop_unref (loop);
+
+#ifdef G_OS_UNIX
+ g_source_remove (watch);
+#endif
+ g_object_unref (cancellable);
+
+ return 0;
+}
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