Add plugin infrastructure

1 files changed, 141 insertions, 0 deletions

diff --git a/src/plugin.c b/src/plugin.c
new file mode 100644
index 00000000..8e164e1e
--- /dev/null
+++ b/src/plugin.c
@@ -0,0 +1,141 @@
+/*
+ *
+ *  Connection Manager
+ *
+ *  Copyright (C) 2007  Intel Corporation. All rights reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <dbus/dbus.h>
+
+#include <glib.h>
+#include <gmodule.h>
+
+#include <connman/plugin.h>
+
+#include "connman.h"
+
+static GSList *plugins = NULL;
+
+struct connman_plugin {
+	GModule *module;
+	struct connman_plugin_desc *desc;
+};
+
+static gboolean add_plugin(GModule *module, struct connman_plugin_desc *desc)
+{
+	struct connman_plugin *plugin;
+
+	plugin = g_try_new0(struct connman_plugin, 1);
+	if (plugin == NULL)
+		return FALSE;
+
+	plugin->module = module;
+	plugin->desc = desc;
+
+	plugins = g_slist_append(plugins, plugin);
+
+	desc->init();
+
+	return TRUE;
+}
+
+static void load_plugins(const gchar *path)
+{
+	GDir *dir;
+	const gchar *file;
+	gchar *filename;
+
+	dir = g_dir_open(path, 0, NULL);
+	if (dir != NULL) {
+		while ((file = g_dir_read_name(dir)) != NULL) {
+			GModule *module;
+			struct connman_plugin_desc *desc;
+
+			if (g_str_has_prefix(file, "libconnman") == FALSE)
+				continue;
+
+			filename = g_build_filename(path, file, NULL);
+
+			module = g_module_open(filename, 0);
+			if (module == NULL) {
+				g_warning("Can't load %s", filename);
+				continue;
+			}
+
+			g_free(filename);
+
+			DBG("%s", g_module_name(module));
+
+			if (g_module_symbol(module, "connman_plugin_desc",
+						(gpointer) &desc) == FALSE) {
+				g_warning("Can't load symbol");
+				g_module_close(module);
+				continue;
+			}
+
+			if (desc == NULL || desc->init == NULL) {
+				g_module_close(module);
+				continue;
+			}
+
+			if (add_plugin(module, desc) == FALSE)
+				g_module_close(module);
+		}
+
+		g_dir_close(dir);
+	}
+}
+
+int __connman_plugin_init(void)
+{
+	DBG("");
+
+	if (g_module_supported() == FALSE) {
+		g_warning("Modules not supported: %s", g_module_error());
+		return FALSE;
+	}
+
+	load_plugins(PLUGINDIR);
+
+	return 0;
+}
+
+void __connman_plugin_cleanup(void)
+{
+	GSList *list;
+
+	DBG("");
+
+	for (list = plugins; list; list = list->next) {
+		struct connman_plugin *plugin = list->data;
+
+		DBG("%s", g_module_name(plugin->module));
+
+		if (plugin->desc->exit)
+			plugin->desc->exit();
+
+		g_module_close(plugin->module);
+
+		g_free(plugin);
+	}
+
+	g_slist_free(plugins);
+}