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Diffstat (limited to 'sensors-applet/sensors-applet-plugins.c')
| -rw-r--r-- | sensors-applet/sensors-applet-plugins.c | 157 |
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); +} + + |