[evolution-data-server/account-mgmt: 6/37] Add a new "evolution-source-registry" D-Bus service.



commit 8299648e4a2e00110e59d7d9516933fe3f9a8c1f
Author: Matthew Barnes <mbarnes redhat com>
Date:   Thu Sep 29 16:08:20 2011 -0400

    Add a new "evolution-source-registry" D-Bus service.
    
    This new service manages data source key files and serves them to
    clients, through the ESource and ESourceRegistry client-side APIs.

 configure.ac                                       |   23 +-
 docs/reference/libebackend/libebackend-docs.xml    |    4 +-
 .../reference/libebackend/libebackend-sections.txt |   52 ++
 .../libebackend/tmpl/e-dbus-source-object.sgml     |  132 ++++
 .../libebackend/tmpl/e-dbus-source-server.sgml     |  120 ++++
 libebackend/Makefile.am                            |    7 +-
 libebackend/e-dbus-source-object.c                 |  615 ++++++++++++++++++
 libebackend/e-dbus-source-object.h                 |   98 +++
 libebackend/e-dbus-source-server.c                 |  681 ++++++++++++++++++++
 libebackend/e-dbus-source-server.h                 |  105 +++
 services/Makefile.am                               |    1 +
 services/evolution-source-registry/Makefile.am     |   32 +
 .../evolution-source-registry.c                    |   66 ++
 ...g.gnome.evolution.dataserver.Sources.service.in |    3 +
 14 files changed, 1930 insertions(+), 9 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 9742f4a..360fedf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -60,6 +60,7 @@ dnl D-Bus versioning
 dnl ******************************
 ADDRESS_BOOK_DBUS_SERVICE_NAME="org.gnome.evolution.dataserver.AddressBook1"
 CALENDAR_DBUS_SERVICE_NAME="org.gnome.evolution.dataserver.Calendar1"
+SOURCES_DBUS_SERVICE_NAME="org.gnome.evolution.dataserver.Sources0"
 
 AC_DEFINE_UNQUOTED(
        ADDRESS_BOOK_DBUS_SERVICE_NAME,
@@ -71,8 +72,14 @@ AC_DEFINE_UNQUOTED(
        ["$CALENDAR_DBUS_SERVICE_NAME"],
        [D-Bus service name for the calendar factory])
 
+AC_DEFINE_UNQUOTED(
+	SOURCES_DBUS_SERVICE_NAME,
+	["$SOURCES_DBUS_SERVICE_NAME"],
+	[D-Bus service name for the source registry])
+
 AC_SUBST(ADDRESS_BOOK_DBUS_SERVICE_NAME)
 AC_SUBST(CALENDAR_DBUS_SERVICE_NAME)
+AC_SUBST(SOURCES_DBUS_SERVICE_NAME)
 
 dnl ******************************
 dnl Libtool versioning
@@ -384,14 +391,15 @@ if test "x$enable_goa" = xyes; then
 fi
 AM_CONDITIONAL(HAVE_GOA, [test x$enable_goa = xyes])
 
+dnl ***********************************
+dnl Check for GNOME Keyring.
+dnl ***********************************
 if test x$os_win32 = xno; then
-  dnl ***********************************
-  dnl Check for GNOME Keyring.
-  dnl ***********************************
-  PKG_CHECK_MODULES(GNOME_KEYRING,
-	[gnome-keyring-1 >= gnome_keyring_minimum_version])
+	PKG_CHECK_MODULES(GNOME_KEYRING,
+		[gnome-keyring-1 >= gnome_keyring_minimum_version])
 fi
-
+AC_SUBST(GNOME_KEYRING_CFLAGS)
+AC_SUBST(GNOME_KEYRING_LIBS)
 
 LIBICAL_REQUIRED=libical_minimum_version
 AC_SUBST(LIBICAL_REQUIRED)
@@ -1489,7 +1497,7 @@ dnl *******************
 dnl D-BUS service stuff
 dnl *******************
 m4_pattern_allow([AM_V_GEN])
-EVO_SUBST_SERVICE_RULE='%.service: %.service.in Makefile ; $(AM_V_GEN) sed -e "s|\ libexecdir\@|$(libexecdir)|" -e s"|\ ADDRESS_BOOK_DBUS_SERVICE_NAME\@|$(ADDRESS_BOOK_DBUS_SERVICE_NAME)|" -e "s|\ CALENDAR_DBUS_SERVICE_NAME\@|$(CALENDAR_DBUS_SERVICE_NAME)|" $< > $@'
+EVO_SUBST_SERVICE_RULE='%.service: %.service.in Makefile ; $(AM_V_GEN) sed -e "s|\ libexecdir\@|$(libexecdir)|" -e s"|\ ADDRESS_BOOK_DBUS_SERVICE_NAME\@|$(ADDRESS_BOOK_DBUS_SERVICE_NAME)|" -e "s|\ CALENDAR_DBUS_SERVICE_NAME\@|$(CALENDAR_DBUS_SERVICE_NAME)|" -e "s|\ SOURCES_DBUS_SERVICE_NAME\@|$(SOURCES_DBUS_SERVICE_NAME)|" $< > $@'
 AC_SUBST(EVO_SUBST_SERVICE_RULE)
 
 dnl ******************************
@@ -1604,6 +1612,7 @@ libedataserverui/libedataserverui.pc
 services/Makefile
 services/evolution-addressbook-factory/Makefile
 services/evolution-calendar-factory/Makefile
+services/evolution-source-registry/Makefile
 tests/Makefile
 tests/libebook/Makefile
 tests/libebook/client/Makefile
diff --git a/docs/reference/libebackend/libebackend-docs.xml b/docs/reference/libebackend/libebackend-docs.xml
index 312b5f0..c774ee2 100644
--- a/docs/reference/libebackend/libebackend-docs.xml
+++ b/docs/reference/libebackend/libebackend-docs.xml
@@ -13,7 +13,9 @@
     <xi:include href="xml/e-backend.xml"/>
     <xi:include href="xml/e-backend-factory.xml"/>
     <xi:include href="xml/e-data-factory.xml"/>
-    <xi:include href="xml/e-dbus-service.xml"/>
+    <xi:include href="xml/e-dbus-server.xml"/>
+    <xi:include href="xml/e-dbus-source-object.xml"/>
+    <xi:include href="xml/e-dbus-source-server.xml"/>
     <xi:include href="xml/e-extensible.xml"/>
     <xi:include href="xml/e-extension.xml"/>
     <xi:include href="xml/e-module.xml"/>
diff --git a/docs/reference/libebackend/libebackend-sections.txt b/docs/reference/libebackend/libebackend-sections.txt
index c54cdbc..b550b86 100644
--- a/docs/reference/libebackend/libebackend-sections.txt
+++ b/docs/reference/libebackend/libebackend-sections.txt
@@ -80,6 +80,58 @@ e_dbus_server_get_type
 </SECTION>
 
 <SECTION>
+<FILE>e-dbus-source-object</FILE>
+<TITLE>EDBusSourceObject</TITLE>
+EDBusSourceObject
+e_dbus_source_object_get_user_dir
+e_dbus_source_object_new
+e_dbus_source_object_get_file
+e_dbus_source_object_get_uid
+e_dbus_source_object_get_writable
+e_dbus_source_object_set_writable
+e_dbus_source_object_to_string
+e_dbus_source_object_parse
+e_dbus_source_object_reload
+e_dbus_source_object_write
+<SUBSECTION Standard>
+E_DBUS_SOURCE_OBJECT
+E_IS_DBUS_SOURCE_OBJECT
+E_TYPE_DBUS_SOURCE_OBJECT
+E_DBUS_SOURCE_OBJECT_CLASS
+E_IS_DBUS_SOURCE_OBJECT_CLASS
+E_DBUS_SOURCE_OBJECT_GET_CLASS
+EDBusSourceObjectClass
+<SUBSECTION Private>
+EDBusSourceObjectPrivate
+e_dbus_source_object_get_type
+</SECTION>
+
+<SECTION>
+<FILE>e-dbus-source-server</FILE>
+EDBusSourceServer
+e_dbus_source_server_new
+e_dbus_source_server_add_object
+e_dbus_source_server_remove_object
+e_dbus_source_server_load_all
+e_dbus_source_server_load_directory
+e_dbus_source_server_load_file
+e_dbus_source_server_load_error
+e_dbus_source_server_lookup_by_uid
+e_dbus_source_server_lookup_by_file
+<SUBSECTION Standard>
+E_DBUS_SOURCE_SERVER
+E_IS_DBUS_SOURCE_SERVER
+E_TYPE_DBUS_SOURCE_SERVER
+E_DBUS_SOURCE_SERVER_CLASS
+E_IS_DBUS_SOURCE_SERVER_CLASS
+E_DBUS_SOURCE_SERVER_GET_CLASS
+EDBusSourceServerClass
+<SUBSECTION Private>
+EDBusSourceServerPrivate
+e_dbus_source_server_get_type
+</SECTION>
+
+<SECTION>
 <FILE>e-file-cache</FILE>
 <TITLE>EFileCache</TITLE>
 EFileCache
diff --git a/docs/reference/libebackend/tmpl/e-dbus-source-object.sgml b/docs/reference/libebackend/tmpl/e-dbus-source-object.sgml
new file mode 100644
index 0000000..7af46a3
--- /dev/null
+++ b/docs/reference/libebackend/tmpl/e-dbus-source-object.sgml
@@ -0,0 +1,132 @@
+<!-- ##### SECTION Title ##### -->
+e-dbus-source-object
+
+<!-- ##### SECTION Short_Description ##### -->
+
+
+<!-- ##### SECTION Long_Description ##### -->
+<para>
+
+</para>
+
+<!-- ##### SECTION See_Also ##### -->
+<para>
+
+</para>
+
+<!-- ##### SECTION Stability_Level ##### -->
+
+
+<!-- ##### SECTION Image ##### -->
+
+
+<!-- ##### STRUCT EDBusSourceObject ##### -->
+<para>
+
+</para>
+
+ parent: 
+ priv: 
+
+<!-- ##### FUNCTION e_dbus_source_object_get_user_dir ##### -->
+<para>
+
+</para>
+
+ void: 
+ Returns: 
+
+
+<!-- ##### FUNCTION e_dbus_source_object_new ##### -->
+<para>
+
+</para>
+
+ file: 
+ cancellable: 
+ error: 
+ Returns: 
+
+
+<!-- ##### FUNCTION e_dbus_source_object_get_file ##### -->
+<para>
+
+</para>
+
+ object: 
+ Returns: 
+
+
+<!-- ##### FUNCTION e_dbus_source_object_get_uid ##### -->
+<para>
+
+</para>
+
+ object: 
+ Returns: 
+
+
+<!-- ##### FUNCTION e_dbus_source_object_get_writable ##### -->
+<para>
+
+</para>
+
+ object: 
+ Returns: 
+
+
+<!-- ##### FUNCTION e_dbus_source_object_set_writable ##### -->
+<para>
+
+</para>
+
+ object: 
+ writable: 
+
+
+<!-- ##### FUNCTION e_dbus_source_object_to_string ##### -->
+<para>
+
+</para>
+
+ object: 
+ length: 
+ Returns: 
+
+
+<!-- ##### FUNCTION e_dbus_source_object_parse ##### -->
+<para>
+
+</para>
+
+ object: 
+ data: 
+ length: 
+ error: 
+ Returns: 
+
+
+<!-- ##### FUNCTION e_dbus_source_object_reload ##### -->
+<para>
+
+</para>
+
+ object: 
+ cancellable: 
+ error: 
+ Returns: 
+
+
+<!-- ##### FUNCTION e_dbus_source_object_write ##### -->
+<para>
+
+</para>
+
+ object: 
+ etag: 
+ new_etag: 
+ cancellable: 
+ error: 
+ Returns: 
+
+
diff --git a/docs/reference/libebackend/tmpl/e-dbus-source-server.sgml b/docs/reference/libebackend/tmpl/e-dbus-source-server.sgml
new file mode 100644
index 0000000..1bb80e7
--- /dev/null
+++ b/docs/reference/libebackend/tmpl/e-dbus-source-server.sgml
@@ -0,0 +1,120 @@
+<!-- ##### SECTION Title ##### -->
+e-dbus-source-server
+
+<!-- ##### SECTION Short_Description ##### -->
+
+
+<!-- ##### SECTION Long_Description ##### -->
+<para>
+
+</para>
+
+<!-- ##### SECTION See_Also ##### -->
+<para>
+
+</para>
+
+<!-- ##### SECTION Stability_Level ##### -->
+
+
+<!-- ##### SECTION Image ##### -->
+
+
+<!-- ##### STRUCT EDBusSourceServer ##### -->
+<para>
+
+</para>
+
+ parent: 
+ priv: 
+
+<!-- ##### FUNCTION e_dbus_source_server_new ##### -->
+<para>
+
+</para>
+
+ void: 
+ Returns: 
+
+
+<!-- ##### FUNCTION e_dbus_source_server_add_object ##### -->
+<para>
+
+</para>
+
+ server: 
+ object: 
+
+
+<!-- ##### FUNCTION e_dbus_source_server_remove_object ##### -->
+<para>
+
+</para>
+
+ server: 
+ object: 
+
+
+<!-- ##### FUNCTION e_dbus_source_server_load_all ##### -->
+<para>
+
+</para>
+
+ server: 
+ error: 
+ Returns: 
+
+
+<!-- ##### FUNCTION e_dbus_source_server_load_directory ##### -->
+<para>
+
+</para>
+
+ server: 
+ path: 
+ monitor_for_changes: 
+ error: 
+ Returns: 
+
+
+<!-- ##### FUNCTION e_dbus_source_server_load_file ##### -->
+<para>
+
+</para>
+
+ server: 
+ file: 
+ error: 
+ Returns: 
+
+
+<!-- ##### FUNCTION e_dbus_source_server_load_error ##### -->
+<para>
+
+</para>
+
+ server: 
+ file: 
+ error: 
+
+
+<!-- ##### FUNCTION e_dbus_source_server_lookup_by_uid ##### -->
+<para>
+
+</para>
+
+ server: 
+ uid: 
+ Returns: 
+
+
+<!-- ##### FUNCTION e_dbus_source_server_lookup_by_file ##### -->
+<para>
+
+</para>
+
+ server: 
+ file: 
+ Returns: 
+
+
diff --git a/libebackend/Makefile.am b/libebackend/Makefile.am
index 562afce..1f78eb7 100644
--- a/libebackend/Makefile.am
+++ b/libebackend/Makefile.am
@@ -3,7 +3,8 @@ lib_LTLIBRARIES = libebackend-1.2.la
 libebackend_1_2_la_CPPFLAGS = \
 	$(AM_CPPFLAGS)						\
 	-I$(top_srcdir)						\
-	-DG_LOG_DOMAIN=\"e-data-server\"			\
+	-DG_LOG_DOMAIN=\"libebackend\"				\
+	-DE_DATA_SERVER_PRIVDATADIR=\"$(privdatadir)\"		\
 	$(DB_CFLAGS)						\
 	$(SQLITE3_CFLAGS)					\
 	$(E_BACKEND_CFLAGS)					\
@@ -14,6 +15,8 @@ libebackend_1_2_la_SOURCES =		\
 	e-backend-factory.c		\
 	e-data-factory.c		\
 	e-dbus-server.c			\
+	e-dbus-source-object.c		\
+	e-dbus-source-server.c		\
 	e-extensible.c			\
 	e-extension.c			\
 	e-offline-listener.c		\
@@ -40,6 +43,8 @@ libebackendinclude_HEADERS =		\
 	e-backend-factory.h		\
 	e-data-factory.h		\
 	e-dbus-server.h			\
+	e-dbus-source-object.h		\
+	e-dbus-source-server.h		\
 	e-extensible.h			\
 	e-extension.h			\
 	e-offline-listener.h		\
diff --git a/libebackend/e-dbus-source-object.c b/libebackend/e-dbus-source-object.c
new file mode 100644
index 0000000..de6e205
--- /dev/null
+++ b/libebackend/e-dbus-source-object.c
@@ -0,0 +1,615 @@
+/*
+ * e-dbus-source-object.c
+ *
+ * This program 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) version 3.
+ *
+ * This program 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 the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#include "e-dbus-source-object.h"
+
+#include <config.h>
+#include <glib/gi18n.h>
+
+#include <libedataserver/e-dbus-manager.h>
+#include <libedataserver/e-data-server-util.h>
+
+#define E_DBUS_SOURCE_OBJECT_GET_PRIVATE(obj) \
+	(G_TYPE_INSTANCE_GET_PRIVATE \
+	((obj), E_TYPE_DBUS_SOURCE_OBJECT, EDBusSourceObjectPrivate))
+
+#define REQD_GROUP_NAME		"Data Source"
+#define DBUS_OBJECT_PATH	"/org/gnome/evolution/dataserver/SourceManager/Source"
+
+struct _EDBusSourceObjectPrivate {
+	EDBusSource *interface;
+
+	GFile *file;
+	GKeyFile *key_file;
+	GFileMonitor *file_monitor;
+	gulong file_monitor_handler_id;
+
+	gboolean writable;
+};
+
+enum {
+	PROP_0,
+	PROP_FILE,
+	PROP_UID,
+	PROP_WRITABLE
+};
+
+/* Forward Declarations */
+static void	e_dbus_source_object_initable_init
+						(GInitableIface *interface);
+
+G_DEFINE_TYPE_WITH_CODE (
+	EDBusSourceObject,
+	e_dbus_source_object,
+	G_TYPE_DBUS_OBJECT_SKELETON,
+	G_IMPLEMENT_INTERFACE (
+		G_TYPE_INITABLE,
+		e_dbus_source_object_initable_init))
+
+static void
+dbus_source_object_monitor_changed_cb (GFileMonitor *file_monitor,
+                                       GFile *file,
+                                       GFile *other_file,
+                                       GFileMonitorEvent event_type,
+                                       EDBusSourceObject *object)
+{
+	GError *error = NULL;
+
+	/* Ignore file deletion events. */
+	if (event_type != G_FILE_MONITOR_EVENT_DELETED)
+		e_dbus_source_object_reload (object, NULL, &error);
+
+	/* XXX Not much we can do beyond emitting a
+	 *     warning if we fail to reload the file. */
+	if (error != NULL) {
+		g_warning ("%s", error->message);
+		g_error_free (error);
+	}
+}
+
+static gboolean
+dbus_source_object_monitor_file (EDBusSourceObject *object,
+                                 GFile *file,
+                                 GCancellable *cancellable,
+                                 GError **error)
+{
+	GFileMonitor *file_monitor;
+
+	/* Attempt to create a new file monitor before destroying the
+	 * old one, so if this fails the old file monitor will persist. */
+	file_monitor = g_file_monitor (
+		file, G_FILE_MONITOR_NONE, cancellable, error);
+
+	if (file_monitor == NULL)
+		return FALSE;
+
+	if (object->priv->file_monitor != NULL) {
+		g_signal_handler_disconnect (
+			object->priv->file_monitor,
+			object->priv->file_monitor_handler_id);
+		g_object_unref (object->priv->file_monitor);
+	}
+
+	object->priv->file_monitor = g_object_ref (file_monitor);
+
+	object->priv->file_monitor_handler_id = g_signal_connect (
+		object->priv->file_monitor, "changed",
+		G_CALLBACK (dbus_source_object_monitor_changed_cb),
+		object);
+
+	return TRUE;
+}
+
+static gboolean
+dbus_source_object_submit_data_cb (EDBusSource *interface,
+                                   GDBusMethodInvocation *invocation,
+                                   const gchar *data)
+{
+	GDBusObject *dbus_object;
+	GDBusInterface *dbus_interface;
+	EDBusSourceObject *object;
+	const gchar *dirname;
+	gchar *basename;
+	gchar *filename;
+	GFile *file;
+	GError *error = NULL;
+
+	dbus_interface = G_DBUS_INTERFACE (interface);
+	dbus_object = g_dbus_interface_get_object (dbus_interface);
+	object = E_DBUS_SOURCE_OBJECT (dbus_object);
+
+	if (!e_dbus_source_object_get_writable (object)) {
+		g_dbus_method_invocation_return_error (
+			invocation, G_IO_ERROR,
+			G_IO_ERROR_PERMISSION_DENIED,
+			_("Data source '%s' is not writable"),
+			e_dbus_source_object_get_uid (object));
+		return TRUE;
+	}
+
+	/* When writing source data to disk, always write to the
+	 * user directory, even if the key file was originally in
+	 * the system-wide directory. */
+
+	dirname = e_dbus_source_object_get_user_dir ();
+	basename = g_file_get_basename (object->priv->file);
+	filename = g_build_filename (dirname, basename, NULL);
+	file = g_file_new_for_path (filename);
+	g_free (filename);
+	g_free (basename);
+
+	/* If we need to replace the GFile, make sure we
+	 * successfully place a file monitor on it first. */
+	if (!g_file_equal (file, object->priv->file) &&
+	    dbus_source_object_monitor_file (object, file, NULL, &error)) {
+		g_object_unref (object->priv->file);
+		object->priv->file = g_object_ref (file);
+	}
+
+	g_object_unref (file);
+
+	/* Write the data to disk.  The file monitor should then
+	 * notice the change and call e_dbus_source_object_reload(). */
+
+	if (error == NULL)
+		e_dbus_source_object_write (object, NULL, NULL, NULL, &error);
+
+	if (error != NULL)
+		g_dbus_method_invocation_take_error (invocation, error);
+
+	return TRUE;
+}
+
+static void
+dbus_source_object_set_file (EDBusSourceObject *object,
+                             GFile *file)
+{
+	g_return_if_fail (G_IS_FILE (file));
+	g_return_if_fail (object->priv->file == NULL);
+
+	object->priv->file = g_object_ref (file);
+}
+
+static void
+dbus_source_object_set_property (GObject *object,
+                                 guint property_id,
+                                 const GValue *value,
+                                 GParamSpec *pspec)
+{
+	switch (property_id) {
+		case PROP_FILE:
+			dbus_source_object_set_file (
+				E_DBUS_SOURCE_OBJECT (object),
+				g_value_get_object (value));
+			return;
+
+		case PROP_WRITABLE:
+			e_dbus_source_object_set_writable (
+				E_DBUS_SOURCE_OBJECT (object),
+				g_value_get_boolean (value));
+			return;
+	}
+
+	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+dbus_source_object_get_property (GObject *object,
+                                 guint property_id,
+                                 GValue *value,
+                                 GParamSpec *pspec)
+{
+	switch (property_id) {
+		case PROP_FILE:
+			g_value_set_object (
+				value,
+				e_dbus_source_object_get_file (
+				E_DBUS_SOURCE_OBJECT (object)));
+			return;
+
+		case PROP_UID:
+			g_value_set_string (
+				value,
+				e_dbus_source_object_get_uid (
+				E_DBUS_SOURCE_OBJECT (object)));
+			return;
+
+		case PROP_WRITABLE:
+			g_value_set_boolean (
+				value,
+				e_dbus_source_object_get_writable (
+				E_DBUS_SOURCE_OBJECT (object)));
+			return;
+	}
+
+	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+dbus_source_object_dispose (GObject *object)
+{
+	EDBusSourceObjectPrivate *priv;
+
+	priv = E_DBUS_SOURCE_OBJECT_GET_PRIVATE (object);
+
+	if (priv->interface != NULL) {
+		g_object_unref (priv->interface);
+		priv->interface = NULL;
+	}
+
+	if (priv->file != NULL) {
+		g_object_unref (priv->file);
+		priv->file = NULL;
+	}
+
+	if (priv->file_monitor != NULL) {
+		g_signal_handler_disconnect (
+			priv->file_monitor,
+			priv->file_monitor_handler_id);
+		g_object_unref (priv->file_monitor);
+		priv->file_monitor = NULL;
+	}
+
+	/* Chain up to parent's dispose() method. */
+	G_OBJECT_CLASS (e_dbus_source_object_parent_class)->dispose (object);
+}
+
+static void
+dbus_source_object_finalize (GObject *object)
+{
+	EDBusSourceObjectPrivate *priv;
+
+	priv = E_DBUS_SOURCE_OBJECT_GET_PRIVATE (object);
+
+	g_key_file_free (priv->key_file);
+
+	/* Chain up to parent's finalize() method. */
+	G_OBJECT_CLASS (e_dbus_source_object_parent_class)->finalize (object);
+}
+
+static void
+dbus_source_object_constructed (GObject *object)
+{
+	EDBusSourceObjectPrivate *priv;
+	const gchar *user_dir;
+	GFile *directory;
+	gchar *uid;
+
+	priv = E_DBUS_SOURCE_OBJECT_GET_PRIVATE (object);
+
+	uid = g_file_get_basename (priv->file);
+	e_dbus_source_set_uid (priv->interface, uid);
+	g_free (uid);
+
+	/* Assume the source is writable only if and only if
+	 * it's in the current user-specific config directory. */
+	user_dir = e_dbus_source_object_get_user_dir ();
+	directory = g_file_new_for_path (user_dir);
+	priv->writable = g_file_has_prefix (priv->file, directory);
+	g_object_unref (directory);
+
+	g_object_bind_property (
+		object, "writable",
+		priv->interface, "writable",
+		G_BINDING_SYNC_CREATE);
+
+	/* Chain up to parent's constructed() method. */
+	G_OBJECT_CLASS (e_dbus_source_object_parent_class)->constructed (object);
+}
+
+static gboolean
+dbus_source_object_initable_init (GInitable *initable,
+                                  GCancellable *cancellable,
+                                  GError **error)
+{
+	EDBusSourceObject *object;
+	GFile *file;
+	gboolean success;
+
+	object = E_DBUS_SOURCE_OBJECT (initable);
+	file = e_dbus_source_object_get_file (object);
+
+	/* We do depend on a working file monitor, so the object
+	 * should fail to initialize if we can't set one up. */
+
+	success =
+		dbus_source_object_monitor_file (
+			object, file, cancellable, error) &&
+		e_dbus_source_object_reload (object, cancellable, error);
+
+	return success;
+}
+
+static void
+e_dbus_source_object_class_init (EDBusSourceObjectClass *class)
+{
+	GObjectClass *object_class;
+
+	g_type_class_add_private (class, sizeof (EDBusSourceObjectPrivate));
+
+	object_class = G_OBJECT_CLASS (class);
+	object_class->set_property = dbus_source_object_set_property;
+	object_class->get_property = dbus_source_object_get_property;
+	object_class->dispose = dbus_source_object_dispose;
+	object_class->finalize = dbus_source_object_finalize;
+	object_class->constructed = dbus_source_object_constructed;
+
+	g_object_class_install_property (
+		object_class,
+		PROP_FILE,
+		g_param_spec_object (
+			"file",
+			"File",
+			"The key file for the data source",
+			G_TYPE_FILE,
+			G_PARAM_READWRITE |
+			G_PARAM_CONSTRUCT_ONLY |
+			G_PARAM_STATIC_STRINGS));
+
+	g_object_class_install_property (
+		object_class,
+		PROP_UID,
+		g_param_spec_string (
+			"uid",
+			"UID",
+			"The unique identity of the data source",
+			NULL,
+			G_PARAM_READABLE |
+			G_PARAM_STATIC_STRINGS));
+
+	g_object_class_install_property (
+		object_class,
+		PROP_WRITABLE,
+		g_param_spec_boolean (
+			"writable",
+			"Writable",
+			"Whether the file contents can be changed",
+			TRUE,  /* default varies; see constructed() */
+			G_PARAM_READWRITE |
+			G_PARAM_STATIC_STRINGS));
+}
+
+static void
+e_dbus_source_object_initable_init (GInitableIface *interface)
+{
+	interface->init = dbus_source_object_initable_init;
+}
+
+static void
+e_dbus_source_object_init (EDBusSourceObject *object)
+{
+	EDBusSource *interface;
+
+	interface = e_dbus_source_skeleton_new ();
+
+	object->priv = E_DBUS_SOURCE_OBJECT_GET_PRIVATE (object);
+	object->priv->interface = interface;
+	object->priv->key_file = g_key_file_new ();
+
+	g_dbus_object_skeleton_add_interface (
+		G_DBUS_OBJECT_SKELETON (object),
+		G_DBUS_INTERFACE_SKELETON (interface));
+
+	g_signal_connect (
+		interface, "handle-submit-data",
+		G_CALLBACK (dbus_source_object_submit_data_cb), NULL);
+}
+
+const gchar *
+e_dbus_source_object_get_user_dir (void)
+{
+	static gchar *dirname = NULL;
+
+	if (G_UNLIKELY (dirname == NULL)) {
+		const gchar *config_dir = e_get_user_config_dir ();
+		dirname = g_build_filename (config_dir, "sources", NULL);
+		g_mkdir_with_parents (dirname, 0700);
+	}
+
+	return dirname;
+}
+
+EDBusSourceObject *
+e_dbus_source_object_new (GFile *file,
+                          GCancellable *cancellable,
+                          GError **error)
+{
+	g_return_val_if_fail (G_IS_FILE (file), NULL);
+
+	return g_initable_new (
+		E_TYPE_DBUS_SOURCE_OBJECT,
+		cancellable, error,
+		"file", file,
+		"object-path", DBUS_OBJECT_PATH,
+		NULL);
+}
+
+GFile *
+e_dbus_source_object_get_file (EDBusSourceObject *object)
+{
+	g_return_val_if_fail (E_IS_DBUS_SOURCE_OBJECT (object), NULL);
+
+	return object->priv->file;
+}
+
+const gchar *
+e_dbus_source_object_get_uid (EDBusSourceObject *object)
+{
+	g_return_val_if_fail (E_IS_DBUS_SOURCE_OBJECT (object), NULL);
+
+	return e_dbus_source_get_uid (object->priv->interface);
+}
+
+gboolean
+e_dbus_source_object_get_writable (EDBusSourceObject *object)
+{
+	g_return_val_if_fail (E_IS_DBUS_SOURCE_OBJECT (object), FALSE);
+
+	return object->priv->writable;
+}
+
+void
+e_dbus_source_object_set_writable (EDBusSourceObject *object,
+                                   gboolean writable)
+{
+	g_return_if_fail (E_IS_DBUS_SOURCE_OBJECT (object));
+
+	object->priv->writable = writable;
+
+	g_object_notify (G_OBJECT (object), "writable");
+}
+
+gchar *
+e_dbus_source_object_to_string (EDBusSourceObject *object,
+                                gsize *length)
+{
+	g_return_val_if_fail (E_IS_DBUS_SOURCE_OBJECT (object), NULL);
+
+	return g_key_file_to_data (object->priv->key_file, length, NULL);
+}
+
+gboolean
+e_dbus_source_object_parse (EDBusSourceObject *object,
+                            const gchar *data,
+                            gsize length,
+                            GError **error)
+{
+	GKeyFile *key_file;
+	gboolean success;
+
+	g_return_val_if_fail (E_IS_DBUS_SOURCE_OBJECT (object), FALSE);
+	g_return_val_if_fail (data != NULL, FALSE);
+
+	key_file = object->priv->key_file;
+
+	success = g_key_file_load_from_data (
+		key_file, data, length,
+		G_KEY_FILE_KEEP_COMMENTS |
+		G_KEY_FILE_KEEP_TRANSLATIONS,
+		error);
+
+	if (!success)
+		return FALSE;
+
+	/* Make sure the key file has a [Data Source] group.
+	 * This is the only place where we peek at the data. */
+	if (!g_key_file_has_group (key_file, REQD_GROUP_NAME)) {
+		g_set_error (
+			error, G_KEY_FILE_ERROR,
+			G_KEY_FILE_ERROR_GROUP_NOT_FOUND,
+			_("Source file is missing a [%s] group"),
+			REQD_GROUP_NAME);
+		success = FALSE;
+	}
+
+	return success;
+}
+
+gboolean
+e_dbus_source_object_reload (EDBusSourceObject *object,
+                             GCancellable *cancellable,
+                             GError **error)
+{
+	GFileInfo *file_info;
+	gchar *contents = NULL;
+	gchar *etag = NULL;
+	gboolean file_is_writable = TRUE;
+	gboolean success;
+	gsize length;
+
+	g_return_val_if_fail (E_IS_DBUS_SOURCE_OBJECT (object), FALSE);
+
+	success = g_file_load_contents (
+		object->priv->file, cancellable,
+		&contents, &length, &etag, error);
+
+	if (!success)
+		goto exit;
+
+	g_return_val_if_fail (contents != NULL, FALSE);
+	g_return_val_if_fail (etag != NULL, FALSE);
+
+	success = e_dbus_source_object_parse (
+		object, contents, length, error);
+
+	if (!success)
+		goto exit;
+
+	file_info = g_file_query_info (
+		object->priv->file,
+		G_FILE_ATTRIBUTE_ACCESS_CAN_WRITE,
+		G_FILE_QUERY_INFO_NONE,
+		cancellable, NULL);
+
+	/* This part is optional, so ignore errors. */
+	if (file_info != NULL) {
+		file_is_writable = g_file_info_get_attribute_boolean (
+			file_info, G_FILE_ATTRIBUTE_ACCESS_CAN_WRITE);
+		g_object_unref (file_info);
+	}
+
+	/* Update the D-Bus interface properties. */
+
+	g_object_set (
+		object->priv->interface,
+		"data", contents, NULL);
+
+	/* If we cannot write to the key file then clearly the
+	 * data source is not writable, but the inverse is not
+	 * necessarily true: the data source may still not be
+	 * writable even if its key file is. */
+	if (!file_is_writable)
+		e_dbus_source_set_writable (object->priv->interface, FALSE);
+
+exit:
+	g_free (contents);
+	g_free (etag);
+
+	return success;
+}
+
+gboolean
+e_dbus_source_object_write (EDBusSourceObject *object,
+                            const gchar *etag,
+                            gchar **new_etag,
+                            GCancellable *cancellable,
+                            GError **error)
+{
+	GFile *file;
+	gchar *contents;
+	gboolean success;
+	gsize length;
+
+	g_return_val_if_fail (E_IS_DBUS_SOURCE_OBJECT (object), FALSE);
+
+	/* Note: Don't update D-Bus interface properties here.
+	 *       If we're successful, the file monitor will notice
+	 *       the change and call e_dbus_source_object_reload(). */
+
+	file = e_dbus_source_object_get_file (object);
+	contents = e_dbus_source_object_to_string (object, &length);
+
+	success = g_file_replace_contents (
+		file, contents, length, etag, FALSE,
+		G_FILE_CREATE_NONE, new_etag, NULL, error);
+
+	g_free (contents);
+
+	return success;
+}
+
diff --git a/libebackend/e-dbus-source-object.h b/libebackend/e-dbus-source-object.h
new file mode 100644
index 0000000..01d1860
--- /dev/null
+++ b/libebackend/e-dbus-source-object.h
@@ -0,0 +1,98 @@
+/*
+ * e-dbus-source-object.h
+ *
+ * This program 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) version 3.
+ *
+ * This program 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 the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef E_DBUS_SOURCE_OBJECT_H
+#define E_DBUS_SOURCE_OBJECT_H
+
+#include <gio/gio.h>
+
+/* Standard GObject macros */
+#define E_TYPE_DBUS_SOURCE_OBJECT \
+	(e_dbus_source_object_get_type ())
+#define E_DBUS_SOURCE_OBJECT(obj) \
+	(G_TYPE_CHECK_INSTANCE_CAST \
+	((obj), E_TYPE_DBUS_SOURCE_OBJECT, EDBusSourceObject))
+#define E_DBUS_SOURCE_OBJECT_CLASS(cls) \
+	(G_TYPE_CHECK_CLASS_CAST \
+	((cls), E_TYPE_DBUS_SOURCE_OBJECT, EDBusSourceObjectClass))
+#define E_IS_DBUS_SOURCE_OBJECT(obj) \
+	(G_TYPE_CHECK_INSTANCE_TYPE \
+	((obj), E_TYPE_DBUS_SOURCE_OBJECT))
+#define E_IS_DBUS_SOURCE_OBJECT_CLASS(cls) \
+	(G_TYPE_CHECK_CLASS_TYPE \
+	((cls), E_TYPE_DBUS_SOURCE_OBJECT))
+#define E_DBUS_SOURCE_OBJECT_GET_CLASS(obj) \
+	(G_TYPE_INSTANCE_GET_CLASS \
+	((obj), E_TYPE_DBUS_SOURCE_OBJECT, EDBusSourceObjectClass))
+
+G_BEGIN_DECLS
+
+typedef struct _EDBusSourceObject EDBusSourceObject;
+typedef struct _EDBusSourceObjectClass EDBusSourceObjectClass;
+typedef struct _EDBusSourceObjectPrivate EDBusSourceObjectPrivate;
+
+/**
+ * EDBusSourceObject:
+ *
+ * #EDBusSourceObject is a simplified representation of #ESource that only
+ * concerns itself with key file management and servicing D-Bus operations.
+ * The file content itself is treated as an opaque blob.
+ *
+ * Since: 3.4
+ **/
+struct _EDBusSourceObject {
+	GDBusObjectSkeleton parent;
+	EDBusSourceObjectPrivate *priv;
+};
+
+struct _EDBusSourceObjectClass {
+	GDBusObjectSkeletonClass parent_class;
+};
+
+GType		e_dbus_source_object_get_type	(void) G_GNUC_CONST;
+const gchar *	e_dbus_source_object_get_user_dir
+						(void) G_GNUC_CONST;
+EDBusSourceObject *
+		e_dbus_source_object_new	(GFile *file,
+						 GCancellable *cancellable,
+						 GError **error);
+GFile *		e_dbus_source_object_get_file	(EDBusSourceObject *object);
+const gchar *	e_dbus_source_object_get_uid	(EDBusSourceObject *object);
+gboolean	e_dbus_source_object_get_writable
+						(EDBusSourceObject *object);
+void		e_dbus_source_object_set_writable
+						(EDBusSourceObject *object,
+						 gboolean writable);
+gchar *		e_dbus_source_object_to_string	(EDBusSourceObject *object,
+						 gsize *length);
+gboolean	e_dbus_source_object_parse	(EDBusSourceObject *object,
+						 const gchar *data,
+						 gsize length,
+						 GError **error);
+gboolean	e_dbus_source_object_reload	(EDBusSourceObject *object,
+						 GCancellable *cancellable,
+						 GError **error);
+gboolean	e_dbus_source_object_write	(EDBusSourceObject *object,
+						 const gchar *etag,
+						 gchar **new_etag,
+						 GCancellable *cancellable,
+						 GError **error);
+
+G_END_DECLS
+
+#endif /* E_DBUS_SOURCE_OBJECT_H */
diff --git a/libebackend/e-dbus-source-server.c b/libebackend/e-dbus-source-server.c
new file mode 100644
index 0000000..1f6f392
--- /dev/null
+++ b/libebackend/e-dbus-source-server.c
@@ -0,0 +1,681 @@
+/*
+ * e-dbus-source-server.c
+ *
+ * This program 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) version 3.
+ *
+ * This program 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 the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#include "e-dbus-source-server.h"
+
+#include <config.h>
+#include <string.h>
+#include <glib/gi18n-lib.h>
+
+#include <libedataserver/e-uid.h>
+#include <libedataserver/e-marshal.h>
+#include <libedataserver/e-dbus-manager.h>
+#include <libedataserver/e-data-server-util.h>
+
+#define E_DBUS_SOURCE_SERVER_GET_PRIVATE(obj) \
+	(G_TYPE_INSTANCE_GET_PRIVATE \
+	((obj), E_TYPE_DBUS_SOURCE_SERVER, EDBusSourceServerPrivate))
+
+#define DBUS_OBJECT_PATH \
+	"/org/gnome/evolution/dataserver/SourceManager"
+
+#define SYSTEM_WIDE_SOURCES_DIRECTORY \
+	E_DATA_SERVER_PRIVDATADIR G_DIR_SEPARATOR_S "sources"
+
+struct _EDBusSourceServerPrivate {
+	GDBusObjectManagerServer *object_manager;
+	EDBusSourceManager *source_manager;
+	GHashTable *objects;
+	GHashTable *monitors;
+};
+
+enum {
+	LOAD_ERROR,
+	LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL];
+
+G_DEFINE_TYPE (
+	EDBusSourceServer,
+	e_dbus_source_server,
+	E_TYPE_DBUS_SERVER)
+
+static gboolean
+dbus_source_server_create_source_cb (EDBusSourceManager *interface,
+                                     GDBusMethodInvocation *invocation,
+                                     const gchar *data,
+                                     EDBusSourceServer *server)
+{
+	GFile *file;
+	GKeyFile *key_file;
+	const gchar *user_dir;
+	gchar *path;
+	gchar *uid;
+	gsize length;
+	GError *error = NULL;
+
+	length = strlen (data);
+
+	/* Make sure the data is syntactically valid. */
+	key_file = g_key_file_new ();
+	g_key_file_load_from_data (
+		key_file, data, length, G_KEY_FILE_NONE, &error);
+	g_key_file_free (key_file);
+
+	if (error != NULL) {
+		g_dbus_method_invocation_take_error (invocation, error);
+		return TRUE;
+	}
+
+	/* Generate a new UID and build a file path from it. */
+	uid = e_uid_new ();
+	e_filename_make_safe (uid);
+	user_dir = e_dbus_source_object_get_user_dir ();
+	path = g_build_filename (user_dir, uid, NULL);
+	file = g_file_new_for_path (path);
+	g_free (path);
+	g_free (uid);
+
+	/* Write the data to the new file path.  The file
+	 * monitor will notice the new file and create an
+	 * EDBusSourceObject for it. */
+	g_file_replace_contents (
+		file, data, length, NULL, FALSE,
+		G_FILE_CREATE_PRIVATE, NULL, NULL, &error);
+
+	g_object_unref (file);
+
+	if (error != NULL)
+		g_dbus_method_invocation_take_error (invocation, error);
+
+	return TRUE;
+}
+
+static gboolean
+dbus_source_server_remove_sources_cb (EDBusSourceManager *interface,
+                                      GDBusMethodInvocation *invocation,
+                                      GStrv uids,
+                                      EDBusSourceServer *server)
+{
+	EDBusSourceObject *object;
+	GQueue queue = G_QUEUE_INIT;
+	guint ii, length;
+
+	length = g_strv_length (uids);
+
+	/* Make sure all the UIDs are valid before removing anything. */
+	for (ii = 0; ii < length; ii++) {
+		object = e_dbus_source_server_lookup_by_uid (server, uids[ii]);
+
+		if (object == NULL) {
+			g_dbus_method_invocation_return_error (
+				invocation,
+				G_IO_ERROR,
+				G_IO_ERROR_INVALID_ARGUMENT,
+				_("Unrecognized data source '%s'"),
+				uids[ii]);
+			goto exit;
+		}
+
+		if (!e_dbus_source_object_get_writable (object)) {
+			g_dbus_method_invocation_return_error (
+				invocation,
+				G_IO_ERROR,
+				G_IO_ERROR_PERMISSION_DENIED,
+				_("Data source '%s' cannot be removed"),
+				uids[ii]);
+			goto exit;
+		}
+
+		/* Do not reference the object. */
+		g_queue_push_tail (&queue, object);
+	}
+
+	/* All the UIDs are valid, so we can remove objects now. */
+	while ((object = g_queue_pop_head (&queue)) != NULL)
+		e_dbus_source_server_remove_object (server, object);
+
+exit:
+	g_queue_clear (&queue);
+
+	return TRUE;
+}
+
+static void
+dbus_source_server_monitor_changed_cb (GFileMonitor *monitor,
+                                       GFile *file,
+                                       GFile *other_file,
+                                       GFileMonitorEvent event_type,
+                                       EDBusSourceServer *server)
+{
+	gchar *basename;
+	gboolean hidden;
+
+	basename = g_file_get_basename (file);
+	hidden = g_str_has_prefix (basename, ".");
+	g_free (basename);
+
+	/* XXX Ignore hidden files so we don't try
+	 *     to load .goutputstream-XXXXXX files. */
+	if (hidden)
+		return;
+
+	if (event_type == G_FILE_MONITOR_EVENT_CREATED) {
+		GError *error = NULL;
+
+		e_dbus_source_server_load_file (server, file, &error);
+		if (error != NULL) {
+			e_dbus_source_server_load_error (
+				server, file, error);
+			g_error_free (error);
+		}
+	}
+
+	if (event_type == G_FILE_MONITOR_EVENT_DELETED) {
+		EDBusSourceObject *object;
+
+		object = e_dbus_source_server_lookup_by_file (server, file);
+		if (object != NULL)
+			e_dbus_source_server_remove_object (server, object);
+	}
+}
+
+static void
+dbus_source_server_dispose (GObject *object)
+{
+	EDBusSourceServerPrivate *priv;
+
+	priv = E_DBUS_SOURCE_SERVER_GET_PRIVATE (object);
+
+	if (priv->object_manager != NULL) {
+		g_object_unref (priv->object_manager);
+		priv->object_manager = NULL;
+	}
+
+	if (priv->source_manager != NULL) {
+		g_object_unref (priv->source_manager);
+		priv->source_manager = NULL;
+	}
+
+	g_hash_table_remove_all (priv->objects);
+	g_hash_table_remove_all (priv->monitors);
+
+	/* Chain up to parent's dispose() method. */
+	G_OBJECT_CLASS (e_dbus_source_server_parent_class)->dispose (object);
+}
+
+static void
+dbus_source_server_finalize (GObject *object)
+{
+	EDBusSourceServerPrivate *priv;
+
+	priv = E_DBUS_SOURCE_SERVER_GET_PRIVATE (object);
+
+	g_hash_table_destroy (priv->objects);
+	g_hash_table_destroy (priv->monitors);
+
+	/* Chain up to parent's finalize() method. */
+	G_OBJECT_CLASS (e_dbus_source_server_parent_class)->finalize (object);
+}
+
+static void
+dbus_source_server_bus_acquired (EDBusServer *server,
+                                 GDBusConnection *connection)
+{
+	EDBusSourceServerPrivate *priv;
+	GError *error = NULL;
+
+	priv = E_DBUS_SOURCE_SERVER_GET_PRIVATE (server);
+
+	g_dbus_object_manager_server_set_connection (
+		priv->object_manager, connection);
+
+	g_dbus_interface_skeleton_export (
+		G_DBUS_INTERFACE_SKELETON (priv->source_manager),
+		connection, DBUS_OBJECT_PATH, &error);
+
+	/* Terminate the server if we can't export the interface. */
+	if (error != NULL) {
+		g_warning ("%s", error->message);
+		e_dbus_server_quit (server);
+		g_error_free (error);
+	}
+
+	/* Chain up to parent's bus_acquired() method. */
+	E_DBUS_SERVER_CLASS (e_dbus_source_server_parent_class)->
+		bus_acquired (server, connection);
+}
+
+static void
+e_dbus_source_server_class_init (EDBusSourceServerClass *class)
+{
+	GObjectClass *object_class;
+	EDBusServerClass *dbus_server_class;
+
+	g_type_class_add_private (class, sizeof (EDBusSourceServerPrivate));
+
+	object_class = G_OBJECT_CLASS (class);
+	object_class->dispose = dbus_source_server_dispose;
+	object_class->finalize = dbus_source_server_finalize;
+
+	dbus_server_class = E_DBUS_SERVER_CLASS (class);
+	dbus_server_class->bus_name = SOURCES_DBUS_SERVICE_NAME;
+	dbus_server_class->bus_acquired = dbus_source_server_bus_acquired;
+
+	/**
+	 * EDBusSourceServer::load-error:
+	 * @server: the #EDBusSourceServer which emitted the signal
+	 * @file: the #GFile being loaded
+	 * @error: a #GError describing the error
+	 *
+	 * Emitted when an error occurs while loading or parsing a
+	 * data source key file.
+	 **/
+	signals[LOAD_ERROR] = g_signal_new (
+		"load-error",
+		G_OBJECT_CLASS_TYPE (object_class),
+		G_SIGNAL_RUN_LAST,
+		G_STRUCT_OFFSET (EDBusSourceServerClass, load_error),
+		NULL, NULL,
+		e_marshal_VOID__OBJECT_BOXED,
+		G_TYPE_NONE, 2,
+		G_TYPE_FILE,
+		G_TYPE_ERROR | G_SIGNAL_TYPE_STATIC_SCOPE);
+}
+
+static void
+e_dbus_source_server_init (EDBusSourceServer *server)
+{
+	GDBusObjectManagerServer *object_manager;
+	EDBusSourceManager *source_manager;
+	GHashTable *objects;
+	GHashTable *monitors;
+
+	object_manager = g_dbus_object_manager_server_new (DBUS_OBJECT_PATH);
+	source_manager = e_dbus_source_manager_skeleton_new ();
+
+	objects = g_hash_table_new_full (
+		(GHashFunc) g_str_hash,
+		(GEqualFunc) g_str_equal,
+		(GDestroyNotify) g_free,
+		(GDestroyNotify) g_object_unref);
+
+	monitors = g_hash_table_new_full (
+		(GHashFunc) g_file_hash,
+		(GEqualFunc) g_file_equal,
+		(GDestroyNotify) g_object_unref,
+		(GDestroyNotify) g_object_unref);
+
+	server->priv = E_DBUS_SOURCE_SERVER_GET_PRIVATE (server);
+	server->priv->object_manager = object_manager;
+	server->priv->source_manager = source_manager;
+	server->priv->objects = objects;
+	server->priv->monitors = monitors;
+
+	g_signal_connect (
+		source_manager, "handle-create-source",
+		G_CALLBACK (dbus_source_server_create_source_cb),
+		server);
+
+	g_signal_connect (
+		source_manager, "handle-remove-sources",
+		G_CALLBACK (dbus_source_server_remove_sources_cb),
+		server);
+}
+
+/**
+ * e_dbus_source_server_new:
+ *
+ * Creates a new instance of #EDBusSourceServer.
+ *
+ * Returns: a new instance of #EDBusSourceServer
+ *
+ * Since: 3.4
+ **/
+EDBusServer *
+e_dbus_source_server_new (void)
+{
+	return g_object_new (E_TYPE_DBUS_SOURCE_SERVER, NULL);
+}
+
+/**
+ * e_dbus_source_server_add_object:
+ * @server: an #EDBusSourceServer
+ * @object: an #EDBusSourceObject
+ *
+ * Adds @object to @server.
+ *
+ * Since: 3.4
+ **/
+void
+e_dbus_source_server_add_object (EDBusSourceServer *server,
+                                 EDBusSourceObject *object)
+{
+	const gchar *object_name;
+	const gchar *object_path;
+	const gchar *uid;
+
+	g_return_if_fail (E_IS_DBUS_SOURCE_SERVER (server));
+	g_return_if_fail (E_IS_DBUS_SOURCE_OBJECT (object));
+
+	uid = e_dbus_source_object_get_uid (object);
+
+	/* Check if we already this object in the server. */
+	if (e_dbus_source_server_lookup_by_uid (server, uid) != NULL)
+		return;
+
+	g_hash_table_insert (
+		server->priv->objects,
+		g_strdup (uid), g_object_ref (object));
+
+	g_dbus_object_manager_server_export_uniquely (
+		server->priv->object_manager,
+		G_DBUS_OBJECT_SKELETON (object));
+
+	object_path = g_dbus_object_get_object_path (G_DBUS_OBJECT (object));
+	object_name = strrchr (object_path, '/') + 1;
+
+	g_print ("Adding UID:%s ('%s')\n", uid, object_name);
+}
+
+/**
+ * e_dbus_source_server_remove_object:
+ * @server: an #EDBusSourceServer
+ * @object: an #EDBusSourceObject
+ *
+ * Removes @object from @server.
+ *
+ * Since: 3.4
+ **/
+void
+e_dbus_source_server_remove_object (EDBusSourceServer *server,
+                                    EDBusSourceObject *object)
+{
+	const gchar *object_name;
+	const gchar *object_path;
+	const gchar *uid;
+
+	g_return_if_fail (E_IS_DBUS_SOURCE_SERVER (server));
+	g_return_if_fail (E_IS_DBUS_SOURCE_OBJECT (object));
+
+	uid = e_dbus_source_object_get_uid (object);
+
+	/* The system object cannot be removed. */
+	if (g_strcmp0 (uid, "system") == 0)
+		return;
+
+	g_hash_table_remove (server->priv->objects, uid);
+
+	object_path = g_dbus_object_get_object_path (G_DBUS_OBJECT (object));
+	object_name = strrchr (object_path, '/') + 1;
+
+	g_print ("Removing UID:%s ('%s')\n", uid, object_name);
+
+	g_dbus_object_manager_server_unexport (
+		server->priv->object_manager, object_path);
+}
+
+/**
+ * e_dbus_source_server_load_all:
+ * @server: an #EDBusSourceServer
+ * @error: return location for a #GError, or %NULL
+ *
+ * Loads data source key files from standard system-wide and user-specific
+ * locations.  Because multiple errors can occur when loading multiple files,
+ * @error is only set if a directory can not be opened.  If a key file fails
+ * to load, the error is broadcast through the #EDBusSourceServer::load-error
+ * signal.
+ *
+ * Returns: %TRUE if the standard directories were successfully opened,
+ *          but this does not imply the key files were successfully loaded
+ *
+ * Since: 3.4
+ **/
+gboolean
+e_dbus_source_server_load_all (EDBusSourceServer *server,
+                               GError **error)
+{
+	const gchar *directory;
+	gboolean success;
+
+	g_return_val_if_fail (E_IS_DBUS_SOURCE_SERVER (server), FALSE);
+
+	/* Load the user's sources directory first so that user-specific
+	 * data sources overshadow predefined data sources with identical
+	 * UIDs.  The "system" data sources is one such example. */
+
+	directory = e_dbus_source_object_get_user_dir ();
+	success = e_dbus_source_server_load_directory (
+		server, directory, TRUE, error);
+	g_prefix_error (error, "%s: ", directory);
+
+	if (!success)
+		return FALSE;
+
+	directory = SYSTEM_WIDE_SOURCES_DIRECTORY;
+	success = e_dbus_source_server_load_directory (
+		server, directory, FALSE, error);
+	g_prefix_error (error, "%s: ", directory);
+
+	return success;
+}
+
+/**
+ * e_dbus_source_server_load_directory:
+ * @server: an #EDBusSourceServer
+ * @path: the path to the directory to load
+ * @monitor_for_changes: monitor the directory for changes
+ * @error: return location for a #GError, or %NULL
+ *
+ * Loads data source key files in @path.  Because multiple errors can
+ * occur when loading multiple files, @error is only set if @path can
+ * not be opened.  If a key file fails to load, the error is broadcast
+ * through the #EDBusSourceServer::load-error signal.
+ *
+ * If @monitor_for_changes is %TRUE, then the @server will emit signals
+ * on the D-Bus interface when key files are created and deleted in @path.
+ *
+ * Returns: %TRUE if @path was successfully opened, but this
+ *          does not imply the key files were successfully loaded
+ *
+ * Since: 3.4
+ **/
+gboolean
+e_dbus_source_server_load_directory (EDBusSourceServer *server,
+                                     const gchar *path,
+                                     gboolean monitor_for_changes,
+                                     GError **error)
+{
+	GDir *dir;
+	GFile *file;
+	const gchar *name;
+
+	g_return_val_if_fail (E_IS_DBUS_SOURCE_SERVER (server), FALSE);
+	g_return_val_if_fail (path != NULL, FALSE);
+
+	/* If the directory doesn't exist then there's nothing to load.
+	 * Note we do not use G_FILE_TEST_DIR here.  If the given path
+	 * exists but is not a directory then we let g_dir_open() fail. */
+	if (!g_file_test (path, G_FILE_TEST_EXISTS))
+		return TRUE;
+
+	dir = g_dir_open (path, 0, error);
+	if (dir == NULL)
+		return FALSE;
+
+	file = g_file_new_for_path (path);
+
+	while ((name = g_dir_read_name (dir)) != NULL) {
+		GFile *child;
+		GError *local_error = NULL;
+
+		/* XXX Ignore hidden files so we don't try
+		 *     to load .goutputstream-XXXXXX files. */
+		if (g_str_has_prefix (name, "."))
+			continue;
+
+		child = g_file_get_child (file, name);
+
+		e_dbus_source_server_load_file (
+			server, child, &local_error);
+
+		if (local_error != NULL) {
+			e_dbus_source_server_load_error (
+				server, child, local_error);
+			g_error_free (local_error);
+		}
+
+		g_object_unref (child);
+	}
+
+	g_dir_close (dir);
+
+	if (monitor_for_changes) {
+		GFileMonitor *monitor;
+
+		monitor = g_file_monitor_directory (
+			file, G_FILE_MONITOR_NONE, NULL, error);
+		if (monitor == NULL)
+			return FALSE;
+
+		g_signal_connect (
+			monitor, "changed",
+			G_CALLBACK (dbus_source_server_monitor_changed_cb),
+			server);
+
+		g_hash_table_insert (
+			server->priv->monitors,
+			g_object_ref (file), monitor);
+	}
+
+	g_object_unref (file);
+
+	return TRUE;
+}
+
+/**
+ * e_dbus_source_server_load_file:
+ * @server: an #EDBusSourceServer
+ * @file: the data source key file to load
+ * @error: return location for a #GError, or %NULL
+ *
+ * Creates an #EDBusSourceObject for a native key file and adds it to
+ * @server.  If an error occurs, the function returns %NULL and sets
+ * @error.
+ *
+ * Returns: the newly-added #EDBusSourceObject, or %NULL on error
+ *
+ * Since: 3.4
+ **/
+EDBusSourceObject *
+e_dbus_source_server_load_file (EDBusSourceServer *server,
+                                GFile *file,
+                                GError **error)
+{
+	EDBusSourceObject *object;
+
+	g_return_val_if_fail (E_IS_DBUS_SOURCE_SERVER (server), NULL);
+	g_return_val_if_fail (G_IS_FILE (file), NULL);
+
+	/* Check if we already have this file loaded. */
+	object = e_dbus_source_server_lookup_by_file (server, file);
+	if (object != NULL)
+		return object;
+
+	/* Create a new ESourceBlob and add it to the server. */
+	object = e_dbus_source_object_new (file, NULL, error);
+	if (object != NULL) {
+		e_dbus_source_server_add_object (server, object);
+		g_object_unref (object);
+	}
+
+	return object;
+}
+
+/**
+ * e_dbus_source_server_load_error:
+ * @server: an #EBusSourceServer
+ * @file: the #GFile that failed to load
+ * @error: a #GError describing the load error
+ *
+ * Emits the #EDBusSourceServer::load-error signal.
+ *
+ * Since: 3.4
+ **/
+void
+e_dbus_source_server_load_error (EDBusSourceServer *server,
+                                 GFile *file,
+                                 const GError *error)
+{
+	g_return_if_fail (E_IS_DBUS_SOURCE_SERVER (server));
+	g_return_if_fail (G_IS_FILE (file));
+	g_return_if_fail (error != NULL);
+
+	g_signal_emit (server, signals[LOAD_ERROR], 0, file, error);
+}
+
+/**
+ * e_dbus_source_server_lookup_by_uid:
+ * @server: an #EDBusSourceServer
+ * @uid: a unique identifier string
+ *
+ * Looks up an #EDBusSourceObject in @server by its unique identifier string.
+ *
+ * Returns: an #EDBusSourceObject, or %NULL if no match was found
+ *
+ * Since: 3.4
+ **/
+EDBusSourceObject *
+e_dbus_source_server_lookup_by_uid (EDBusSourceServer *server,
+                                    const gchar *uid)
+{
+	g_return_val_if_fail (E_IS_DBUS_SOURCE_SERVER (server), NULL);
+	g_return_val_if_fail (uid != NULL, NULL);
+
+	return g_hash_table_lookup (server->priv->objects, uid);
+}
+
+/**
+ * e_dbus_source_server_lookup_by_file:
+ * @server: an #EDBusSourceServer
+ * @file: a #GFile
+ *
+ * Looks up an #EDBusSourceObject in @server by its #GFile.
+ *
+ * Returns: an #EDBusSourceObject, or %NULL if no match was found
+ *
+ * Since: 3.4
+ **/
+EDBusSourceObject *
+e_dbus_source_server_lookup_by_file (EDBusSourceServer *server,
+                                     GFile *file)
+{
+	EDBusSourceObject *object;
+	gchar *uid;
+
+	g_return_val_if_fail (E_IS_DBUS_SOURCE_SERVER (server), NULL);
+	g_return_val_if_fail (G_IS_FILE (file), NULL);
+
+	uid = g_file_get_basename (file);
+	object = e_dbus_source_server_lookup_by_uid (server, uid);
+	g_free (uid);
+
+	return object;
+}
+
diff --git a/libebackend/e-dbus-source-server.h b/libebackend/e-dbus-source-server.h
new file mode 100644
index 0000000..6cc90f2
--- /dev/null
+++ b/libebackend/e-dbus-source-server.h
@@ -0,0 +1,105 @@
+/*
+ * e-dbus-source-server.h
+ *
+ * This program 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) version 3.
+ *
+ * This program 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 the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef E_DBUS_SOURCE_SERVER_H
+#define E_DBUS_SOURCE_SERVER_H
+
+#include <libebackend/e-dbus-server.h>
+#include <libebackend/e-dbus-source-object.h>
+
+/* Standard GObject macros */
+#define E_TYPE_DBUS_SOURCE_SERVER \
+	(e_dbus_source_server_get_type ())
+#define E_DBUS_SOURCE_SERVER(obj) \
+	(G_TYPE_CHECK_INSTANCE_CAST \
+	((obj), E_TYPE_DBUS_SOURCE_SERVER, EDBusSourceServer))
+#define E_DBUS_SOURCE_SERVER_CLASS(cls) \
+	(G_TYPE_CHECK_CLASS_CAST \
+	((cls), E_TYPE_DBUS_SOURCE_SERVER, EDBusSourceServerClass))
+#define E_IS_DBUS_SOURCE_SERVER(obj) \
+	(G_TYPE_CHECK_INSTANCE_TYPE \
+	((obj), E_TYPE_DBUS_SOURCE_SERVER))
+#define E_IS_DBUS_SOURCE_SERVER_CLASS(cls) \
+	(G_TYPE_CHECK_CLASS_TYPE \
+	((cls), E_TYPE_DBUS_SOURCE_SERVER))
+#define E_DBUS_SOURCE_SERVER_GET_CLASS(obj) \
+	(G_TYPE_INSTANCE_GET_CLASS \
+	((obj), E_TYPE_DBUS_SOURCE_SERVER, EDBusSourceServerClass))
+
+G_BEGIN_DECLS
+
+typedef struct _EDBusSourceServer EDBusSourceServer;
+typedef struct _EDBusSourceServerClass EDBusSourceServerClass;
+typedef struct _EDBusSourceServerPrivate EDBusSourceServerPrivate;
+
+/**
+ * EDBusSourceServer:
+ *
+ * Contains only private data that should be read and manipulated using the
+ * functions below.
+ *
+ * Since: 3.4
+ **/
+struct _EDBusSourceServer {
+	EDBusServer parent;
+	EDBusSourceServerPrivate *priv;
+};
+
+struct _EDBusSourceServerClass {
+	EDBusServerClass parent_class;
+
+	/* Signals */
+	void		(*load_error)		(EDBusSourceServer *server,
+						 GFile *file,
+						 const GError *error);
+};
+
+GType		e_dbus_source_server_get_type	(void) G_GNUC_CONST;
+EDBusServer *	e_dbus_source_server_new	(void);
+void		e_dbus_source_server_add_object
+						(EDBusSourceServer *server,
+						 EDBusSourceObject *object);
+void		e_dbus_source_server_remove_object
+						(EDBusSourceServer *server,
+						 EDBusSourceObject *object);
+gboolean	e_dbus_source_server_load_all	(EDBusSourceServer *server,
+						 GError **error);
+gboolean	e_dbus_source_server_load_directory
+						(EDBusSourceServer *server,
+						 const gchar *path,
+						 gboolean monitor_for_changes,
+						 GError **error);
+EDBusSourceObject *
+		e_dbus_source_server_load_file	(EDBusSourceServer *server,
+						 GFile *file,
+						 GError **error);
+void		e_dbus_source_server_load_error	(EDBusSourceServer *server,
+						 GFile *file,
+						 const GError *error);
+EDBusSourceObject *
+		e_dbus_source_server_lookup_by_uid
+						(EDBusSourceServer *server,
+						 const gchar *uid);
+EDBusSourceObject *
+		e_dbus_source_server_lookup_by_file
+						(EDBusSourceServer *server,
+						 GFile *file);
+
+G_END_DECLS
+
+#endif /* E_DBUS_SOURCE_SERVER_H */
diff --git a/services/Makefile.am b/services/Makefile.am
index 1750bfa..551a440 100644
--- a/services/Makefile.am
+++ b/services/Makefile.am
@@ -3,6 +3,7 @@ NULL =
 SUBDIRS = \
 	evolution-addressbook-factory \
 	evolution-calendar-factory \
+	evolution-source-registry \
 	$(NULL)
 
 -include $(top_srcdir)/git.mk
diff --git a/services/evolution-source-registry/Makefile.am b/services/evolution-source-registry/Makefile.am
new file mode 100644
index 0000000..308744d
--- /dev/null
+++ b/services/evolution-source-registry/Makefile.am
@@ -0,0 +1,32 @@
+NULL =
+
+service_in_files = org.gnome.evolution.dataserver.Sources.service.in
+servicedir = $(datadir)/dbus-1/services
+service_DATA = $(service_in_files:.service.in=.service)
+ EVO_SUBST_SERVICE_RULE@
+
+CLEANFILES = $(service_DATA)
+EXTRA_DIST = $(service_in_files)
+
+libexec_PROGRAMS = evolution-source-registry
+
+evolution_source_registry_CPPFLAGS = \
+	$(AM_CPPFLAGS) \
+	-I$(top_srcdir) \
+	-I$(top_builddir) \
+	-DG_LOG_DOMAIN=\"evolution-source-registry\" \
+	-DLOCALEDIR=\"$(localedir)\" \
+	$(E_DATA_SERVER_CFLAGS) \
+	$(NULL)
+
+evolution_source_registry_SOURCES = \
+	evolution-source-registry.c \
+	$(NULL)
+
+evolution_source_registry_LDADD = \
+	$(top_builddir)/libebackend/libebackend-1.2.la \
+	$(top_builddir)/libedataserver/libedataserver-1.2.la \
+	$(E_DATA_SERVER_LIBS) \
+	$(NULL)
+
+-include $(top_srcdir)/git.mk
diff --git a/services/evolution-source-registry/evolution-source-registry.c b/services/evolution-source-registry/evolution-source-registry.c
new file mode 100644
index 0000000..6cd1cba
--- /dev/null
+++ b/services/evolution-source-registry/evolution-source-registry.c
@@ -0,0 +1,66 @@
+/*
+ * e-source-registry.c
+ *
+ * This program 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) version 3.
+ *
+ * This program 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 the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#include <config.h>
+#include <locale.h>
+#include <stdlib.h>
+#include <glib/gi18n.h>
+
+#include <libebackend/e-dbus-source-server.h>
+
+gint
+main (gint argc,
+      gchar **argv)
+{
+	EDBusServer *server;
+	GError *error = NULL;
+
+	setlocale (LC_ALL, "");
+	bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
+	bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
+
+	g_type_init ();
+
+	server = e_dbus_source_server_new ();
+
+	/* Failure here is fatal.  Don't even try to keep going. */
+	e_dbus_source_server_load_all (
+		E_DBUS_SOURCE_SERVER (server), &error);
+
+	if (error != NULL) {
+		g_printerr ("%s\n", error->message);
+		g_object_unref (server);
+		exit (EXIT_FAILURE);
+	}
+
+	g_print ("Server is up and running...\n");
+
+	/* Keep the server from quitting on its own.
+	 * We don't have a way of tracking number of
+	 * active clients, so once the server is up,
+	 * it's up until the session bus closes. */
+	e_dbus_server_hold (server);
+
+	e_dbus_server_run (server);
+
+	g_object_unref (server);
+
+	g_print ("Bye.\n");
+
+	return 0;
+}
diff --git a/services/evolution-source-registry/org.gnome.evolution.dataserver.Sources.service.in b/services/evolution-source-registry/org.gnome.evolution.dataserver.Sources.service.in
new file mode 100644
index 0000000..1db5de8
--- /dev/null
+++ b/services/evolution-source-registry/org.gnome.evolution.dataserver.Sources.service.in
@@ -0,0 +1,3 @@
+[D-BUS Service]
+Name= SOURCES_DBUS_SERVICE_NAME@
+Exec= libexecdir@/e-source-registry



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