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/*
* Copyright (C) 2005-2009 Alex Murray <murray.alex@gmail.com>
* Copyright (C) 2012-2021 MATE Developers
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 ".mate2/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;
SensorsAppletPluginInit init_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) {
SensorsAppletPluginName name_fn;
SensorsAppletPluginGetSensorValue get_value_fn;
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);
// sensors_applet_add_sensor() doesn't free strings, so free them here
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);
}
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