Initial release bases on sensors-applet

1 files changed, 157 insertions, 0 deletions

diff --git a/sensors-applet/sensors-applet-plugins.c b/sensors-applet/sensors-applet-plugins.c
new file mode 100644
index 0000000..7dfad78
--- /dev/null
+++ b/sensors-applet/sensors-applet-plugins.c
@@ -0,0 +1,157 @@
+/*
+ * Copyright (C) 2005-2009 Alex Murray <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#ifdef HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif /* HAVE_DLFCN_H */
+
+#include "sensors-applet-plugins.h"
+#include "sensors-applet-sensor.h"
+
+#define SENSORS_APPLET_USER_PLUGIN_DIR ".gnome2/sensors-applet/plugins"
+
+static void load_all_plugins(SensorsApplet *sensors_applet,
+                             const gchar *path) 
+{
+        if (g_file_test(path, 
+                        G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR)) {
+                GDir *dir;
+                if ((dir = g_dir_open(path, 0, NULL)) != NULL) {
+                        const gchar *file;
+                        while ((file = g_dir_read_name(dir)) != NULL) {
+                                // try and open plugin
+                                gchar *plugin_file;
+                                void *handle;
+                                SensorsAppletPluginName name_fn;
+                                SensorsAppletPluginInit init_fn;
+                                SensorsAppletPluginGetSensorValue get_value_fn;
+
+                                plugin_file = g_strdup_printf("%s/%s", path, file);
+                                g_debug("found %s in plugin directory", plugin_file);
+                                if ((handle = dlopen(plugin_file, RTLD_NOW)) != NULL) {
+                                        
+                                        if ((name_fn = dlsym(handle, "sensors_applet_plugin_name")) != NULL &&
+                                            (init_fn = dlsym(handle, "sensors_applet_plugin_init")) != NULL &&
+                                            (get_value_fn = dlsym(handle, "sensors_applet_plugin_get_sensor_value")) != NULL) {
+                                                GList *sensors;
+                                                g_debug("calling init function for plugin file %s", plugin_file);
+                                                
+                                                if ((sensors = init_fn()) != NULL) {
+                                                        GList *sensor;
+                                                        
+                                                        g_debug("registering plugin %s", name_fn());
+                                                        g_hash_table_insert(sensors_applet->plugins,
+                                                                            g_strdup(name_fn()),
+                                                                            get_value_fn);
+                                                        for (sensor = g_list_first(sensors);
+                                                             sensor != NULL;
+                                                             sensor = g_list_next(sensor)) {
+                                                                SensorsAppletSensorInfo *sensor_info = (SensorsAppletSensorInfo *)sensor->data;
+                                                                sensors_applet_add_sensor(sensors_applet,
+                                                                                          sensor_info->path,
+                                                                                          sensor_info->id, 
+                                                                                          sensor_info->label,
+                                                                                          name_fn(),
+                                                                                          sensor_info->type,
+                                                                                          sensor_info->enable,
+                                                                                          sensor_info->low_value,
+                                                                                          sensor_info->high_value,
+                                                                                          FALSE, // ALARM OFF
+                                                                                          "", // no alarm commands
+                                                                                          "", // no alarm commands
+                                                                                          0, // alarm_timeout
+                                                                                          sensor_info->multiplier,
+                                                                                          sensor_info->offset,
+                                                                                          sensor_info->icon,
+                                                                                          sensor_info->graph_color);
+                                                                
+                                                                g_free(sensor_info->path);
+                                                                g_free(sensor_info->id);
+                                                                g_free(sensor_info->label);
+                                                                g_free(sensor_info->graph_color);
+                                                                g_free(sensor_info);
+                                                        }
+                                                        g_list_free(sensors);
+                                                } else {
+                                                        g_debug("plugin could not find any sensors");
+                                                        if (g_hash_table_lookup(sensors_applet->required_plugins,
+                                                                                name_fn()))
+                                                        {
+                                                                g_debug("plugin is required - registering even though no sensors detected");
+                                                        g_debug("registering plugin %s", name_fn());
+                                                        g_hash_table_insert(sensors_applet->plugins,
+                                                                            g_strdup(name_fn()),
+                                                                            get_value_fn);
+                                                        } else {
+                                                                g_debug("unloading plugin");
+                                                        }
+                                                }
+                                                
+                                                                
+
+                                        } else {
+                                                g_debug("plugin file %s does not contain the required interface", plugin_file);
+                                                if (dlclose(handle) != 0) {
+                                                        g_debug("error closing plugin file %s", plugin_file);
+                                                }
+                                        }
+                                } else {
+                                        g_debug("Could not dlopen: %s: %s", plugin_file, dlerror());
+                                }
+                                g_free(plugin_file);
+                        }
+                        g_dir_close(dir);
+                } else {
+                        g_debug("error opening plugin dir %s", path);
+                }
+        } else {
+                g_debug("path %s is not a valid directory", path);
+        }
+}
+
+void sensors_applet_plugins_load_all(SensorsApplet *sensors_applet) 
+{
+        const gchar *home;
+        
+        if ((home = g_get_home_dir()) != NULL) {
+                gchar *path;
+                path = g_build_filename(home, 
+                                        SENSORS_APPLET_USER_PLUGIN_DIR,
+                                        NULL);
+                load_all_plugins(sensors_applet, path);
+                g_free(path);
+        } else {
+                g_warning("could not get home dir of user");
+        }
+        
+        
+        load_all_plugins(sensors_applet, SENSORS_APPLET_PLUGIN_DIR);
+}
+
+SensorsAppletPluginGetSensorValue sensors_applet_plugins_get_sensor_value_func(SensorsApplet *sensors_applet,
+                                                                               const gchar *plugin) 
+{
+        return g_hash_table_lookup(sensors_applet->plugins,
+                                   plugin);
+}
+
+