Add a new daemon configuration option to control EnumerateAllDevices

For plugins that are configured to only enumerate devices supported
by metadata this will allow showing them in all contexts

Fixes: #1877

data/daemon.conf

@@ -25,3 +25,6 @@ VerboseDomains=
 
 # Update the message of the day (MOTD) on device and metadata changes
 UpdateMotd=true
+
+# For some plugins, enumerate only devices supported by metadata
+EnumerateAllDevices=true

src/fu-config.c

@@ -34,6 +34,7 @@ struct _FuConfig
 	guint			 idle_timeout;
 	gchar			*config_file;
 	gboolean		 update_motd;
+	gboolean		 enumerate_all_devices;
 };
 
 G_DEFINE_TYPE (FuConfig, fu_config, G_TYPE_OBJECT)
@@ -55,6 +56,7 @@ fu_config_reload (FuConfig *self, GError **error)
 	g_auto(GStrv) plugins = NULL;
 	g_autofree gchar *domains = NULL;
 	g_autoptr(GKeyFile) keyfile = g_key_file_new ();
+	g_autoptr(GError) error_enumerate_all = NULL;
 
 	g_debug ("loading config values from %s", self->config_file);
 	if (!g_key_file_load_from_file (keyfile, self->config_file,
@@ -133,6 +135,17 @@ fu_config_reload (FuConfig *self, GError **error)
 						   "UpdateMotd",
 						   NULL);
 
+	/* whether to only show supported devices for some plugins */
+	self->enumerate_all_devices = g_key_file_get_boolean (keyfile,
+							      "fwupd",
+							      "EnumerateAllDevices",
+							      &error_enumerate_all);
+	/* if error parsing or missing, we want to default to true */
+	if (!self->enumerate_all_devices && error_enumerate_all != NULL) {
+		g_debug ("failed to read EnumerateAllDevices key: %s", error_enumerate_all->message);
+		self->enumerate_all_devices = TRUE;
+	}
+
 	return TRUE;
 }
 
@@ -237,6 +250,13 @@ fu_config_get_update_motd (FuConfig *self)
 	return self->update_motd;
 }
 
+gboolean
+fu_config_get_enumerate_all_devices (FuConfig *self)
+{
+	g_return_val_if_fail (FU_IS_CONFIG (self), FALSE);
+	return self->enumerate_all_devices;
+}
+
 static void
 fu_config_class_init (FuConfigClass *klass)
 {

src/fu-config.h

@@ -27,3 +27,4 @@ GPtrArray	*fu_config_get_blacklist_devices	(FuConfig	*self);
 GPtrArray	*fu_config_get_blacklist_plugins	(FuConfig	*self);
 GPtrArray	*fu_config_get_approved_firmware	(FuConfig	*self);
 gboolean	 fu_config_get_update_motd		(FuConfig	*self);
+gboolean	 fu_config_get_enumerate_all_devices	(FuConfig	*self);

src/fu-engine.c

@@ -501,6 +501,7 @@ fu_engine_modify_config (FuEngine *self, const gchar *key, const gchar *value, G
 		"IdleTimeout",
 		"VerboseDomains",
 		"UpdateMotd",
+		"EnumerateAllDevices",
 		NULL };
 
 	g_return_val_if_fail (FU_IS_ENGINE (self), FALSE);
@@ -4880,6 +4881,10 @@ fu_engine_plugin_check_supported_cb (FuPlugin *plugin, const gchar *guid, FuEngi
 {
 	g_autoptr(XbNode) n = NULL;
 	g_autofree gchar *xpath = NULL;
+
+	if (fu_config_get_enumerate_all_devices (self->config))
+		return TRUE;
+
 	xpath = g_strdup_printf ("components/component/"
 				 "provides/firmware[@type='flashed'][text()='%s']",
 				 guid);