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-rw-r--r--plugins/libsensors/libsensors-plugin.c515
1 files changed, 515 insertions, 0 deletions
diff --git a/plugins/libsensors/libsensors-plugin.c b/plugins/libsensors/libsensors-plugin.c
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--- /dev/null
+++ b/plugins/libsensors/libsensors-plugin.c
@@ -0,0 +1,515 @@
+/*
+ * 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_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#ifdef HAVE_REGEX_H
+#include <regex.h>
+#endif
+
+#ifdef HAVE_SENSORS_SENSORS_H
+#include <sensors/sensors.h>
+#endif
+
+#include "libsensors-plugin.h"
+
+const gchar *plugin_name = "libsensors";
+
+GHashTable *hash_table = NULL;
+
+enum {
+ LIBSENSORS_CHIP_PARSE_ERROR,
+ LIBSENSORS_MISSING_FEATURE_ERROR,
+ LIBSENSORS_REGEX_URL_COMPILE_ERROR,
+ LIBSENSORS_CHIP_NOT_FOUND_ERROR
+};
+
+#if SENSORS_API_VERSION < 0x400
+#define LIBSENSORS_CONFIG_FILE "/etc/sensors.conf"
+#define LIBSENSORS_ALTERNATIVE_CONFIG_FILE "/usr/local/etc/sensors.conf"
+#endif
+
+regex_t uri_re;
+
+static char *get_chip_name_string(const sensors_chip_name *chip) {
+ char *name;
+
+#if SENSORS_API_VERSION < 0x400
+ // taken from lm-sensors:prog/sensors/main.c:sprintf_chip_name
+ switch (chip->bus) {
+ case SENSORS_CHIP_NAME_BUS_ISA:
+ name = g_strdup_printf ("%s-isa-%04x", chip->prefix, chip->addr);
+ break;
+ case SENSORS_CHIP_NAME_BUS_DUMMY:
+ name = g_strdup_printf ("%s-%s-%04x", chip->prefix, chip->busname, chip->addr);
+ break;
+ case SENSORS_CHIP_NAME_BUS_PCI:
+ name = g_strdup_printf ("%s-pci-%04x", chip->prefix, chip->addr);
+ break;
+ default:
+ name = g_strdup_printf ("%s-i2c-%d-%02x", chip->prefix, chip->bus, chip->addr);
+ break;
+ }
+#else
+ // adapted from lm-sensors:prog/sensors/main.c:sprintf_chip_name
+ // in lm-sensors-3.0
+#define BUF_SIZE 200
+ name = g_malloc0(BUF_SIZE);
+ if (sensors_snprintf_chip_name(name, BUF_SIZE, chip) < 0) {
+ g_free(name);
+ name = NULL;
+ }
+
+#endif
+
+ return name;
+}
+
+#if SENSORS_API_VERSION < 0x400
+static SensorType get_sensor_type (const char *name) {
+ SensorType type = CURRENT_SENSOR;
+
+ if (g_strrstr(name, "in")) {
+ type = VOLTAGE_SENSOR;
+ }
+ else if (g_strrstr(name, "fan")) {
+ type = FAN_SENSOR;
+ }
+ else if (g_strrstr(name, "temp")) {
+ type = TEMP_SENSOR;
+ } else {
+ g_debug("sensor %s not recognised as either voltage, fan or temp sensor - assuming is a current sensor", name);
+ type = CURRENT_SENSOR;
+ }
+ return type;
+}
+
+
+/* If a sensor is 'interesting' to us then return its label, otherwise NULL. */
+static char *get_sensor_interesting_label (sensors_chip_name chip, int feature) {
+ char *label;
+
+ if (sensors_get_ignored(chip, feature) &&
+ (sensors_get_label(chip, feature, &label) == 0)) {
+ if (! (strcmp ("alarms", label) == 0 || strncmp ("sensor", label, 6) == 0)) {
+ return label;
+ } else {
+ free (label);
+ }
+ }
+
+
+ return NULL;
+}
+
+static const sensors_feature_data * get_sensor_min_max(const sensors_chip_name *chip,
+ int *n1, int *n2,
+ int number,
+ gdouble *low_value,
+ gdouble *high_value) {
+ const sensors_feature_data *data;
+ double value;
+
+ /* The sub features are returned directly after the main feature by
+ sensors_get_all_features(), so no need to iterate over all features */
+ while ((data = sensors_get_all_features (*chip, n1, n2)) != NULL &&
+ data->mapping == number) {
+ if ((data->mode & SENSORS_MODE_R) &&
+ (sensors_get_feature(*chip, data->number, &value) == 0) &&
+ data->name != NULL) {
+ if (g_str_has_suffix(data->name, "_min")) {
+
+ *low_value = value;
+
+ g_debug("overriding low value of sensor %s with value %f\n", data->name, value);
+
+ } else if (g_str_has_suffix(data->name, "_max")) {
+
+ *high_value = value;
+ g_debug("overriding high value of sensor %s with value %f\n", data->name, value);
+
+ }
+
+ }
+ }
+ return data;
+}
+
+#endif
+
+static IconType get_sensor_icon (SensorType type) {
+ switch (type) {
+ case TEMP_SENSOR:
+ return CPU_ICON;
+ case FAN_SENSOR:
+ return FAN_ICON;
+ default:
+ return GENERIC_ICON;
+ }
+}
+
+
+#if SENSORS_API_VERSION < 0x400
+static void check_sensor_with_data(GList **sensors,
+ const char * const chip_name,
+ const sensors_chip_name *chip,
+ int *n1, int *n2,
+ const sensors_feature_data *data)
+{
+ char *label;
+ double value;
+ SensorsAppletSensorInfo *sensor_info = NULL;
+
+ /* ... some of which are boring ... */
+ if ((label = get_sensor_interesting_label (*chip, data->number))) {
+ /* ... and some of which are actually sensors */
+ if ((data->mode & SENSORS_MODE_R) &&
+ (data->mapping == SENSORS_NO_MAPPING) &&
+ (sensors_get_feature(*chip, data->number, &value) == 0) // make sure we can actually get a value for it
+ ) {
+ SensorType type;
+ gboolean visible;
+ IconType icon;
+ gdouble low_value, high_value;
+
+ gchar *url;
+
+ type = get_sensor_type (data->name);
+ visible = (type == TEMP_SENSOR ? TRUE : FALSE);
+ icon = get_sensor_icon(type);
+
+ // the 'path' contains all the information we need to
+ // identify this sensor later
+ url = g_strdup_printf ("sensor://%s/%d", chip_name, data->number);
+
+ // get low and high values
+ sensors_applet_plugin_default_sensor_limits(type,
+ &low_value,
+ &high_value);
+
+ data = get_sensor_min_max(chip, n1, n2, data->number,
+ &low_value, &high_value);
+ if (data != NULL) {
+ // try adding this one
+ // at this point we have called sensors_get_all_features() and stopped when we have a potential new sensor, so make sure we try this as well - do a recursive call
+ check_sensor_with_data(sensors, chip_name, chip, n1, n2, data);
+
+ }
+
+ g_hash_table_insert(hash_table, g_strdup(url), (void *)chip);
+ // the id identifies a particular sensor for the user;
+ // we default to the label returned by libsensors
+ sensors_applet_plugin_add_sensor_with_limits(sensors,
+ url,
+ label,
+ label,
+ type,
+ visible,
+ low_value,
+ high_value,
+ icon,
+ DEFAULT_GRAPH_COLOR);
+ g_free(url);
+ }
+ free (label);
+ }
+
+}
+
+#endif
+
+
+static GList *libsensors_plugin_get_sensors(void) {
+ const sensors_chip_name *chip_name;
+ int i;
+ GList *sensors = NULL;
+
+#if SENSORS_API_VERSION < 0x400
+ FILE *file;
+ g_debug("%s: using libsensors version < 4", __FUNCTION__);
+
+ /* try to open config file, otherwise try alternate config
+ * file - if neither succeed, exit */
+ if ((file = fopen (LIBSENSORS_CONFIG_FILE, "r")) == NULL) {
+ if ((file = fopen (LIBSENSORS_ALTERNATIVE_CONFIG_FILE, "r")) == NULL) {
+ g_debug("%s: error opening libsensors config file... ", __FUNCTION__);
+ return sensors;
+ }
+ }
+
+ /* at this point should have an open config file, if is not
+ * valid, close file and return */
+ if (sensors_init(file) != 0) {
+ fclose(file);
+ g_debug("%s: error initing libsensors from config file...", __FUNCTION__);
+ return sensors;
+ }
+ fclose(file);
+
+ /* libsensors exposes a number of chips - ... */
+ i = 0;
+ while ((chip_name = sensors_get_detected_chips (&i)) != NULL) {
+ char *chip_name_string;
+ const sensors_feature_data *data;
+ int n1 = 0, n2 = 0;
+
+ chip_name_string = get_chip_name_string(chip_name);
+
+ /* ... each of which has one or more 'features' ... */
+ while ((data = sensors_get_all_features (*chip_name, &n1, &n2)) != NULL) { // error
+ // fill in list for us
+ check_sensor_with_data(&sensors, chip_name_string,
+ chip_name, &n1, &n2, data);
+ }
+ g_free (chip_name_string);
+ }
+
+#else
+ g_debug("%s: using libsensors version >= 4", __FUNCTION__);
+
+ int nr = 0;
+ if (sensors_init(NULL) != 0) {
+ g_debug("%s: error initing libsensors", __FUNCTION__);
+ return sensors;
+ }
+ i = 0;
+ while ((chip_name = sensors_get_detected_chips(NULL, &nr)))
+ {
+ char *chip_name_string, *label;
+ const sensors_subfeature *input_feature;
+ const sensors_subfeature *low_feature;
+ const sensors_subfeature *high_feature;
+ const sensors_feature *main_feature;
+ SensorType type;
+ gint nr1 = 0;
+ gdouble value, low, high;
+ gchar *path;
+ gboolean visible;
+ IconType icon;
+
+ chip_name_string = get_chip_name_string(chip_name);
+ if (chip_name_string == NULL) {
+ g_debug("%s: %d: error getting name string for sensor: %s\n",
+ __FILE__, __LINE__, chip_name->path);
+ continue;
+ }
+
+ while ((main_feature = sensors_get_features(chip_name, &nr1)))
+ {
+ switch (main_feature->type)
+ {
+ case SENSORS_FEATURE_IN:
+ type = VOLTAGE_SENSOR;
+ input_feature = sensors_get_subfeature(chip_name,
+ main_feature,
+ SENSORS_SUBFEATURE_IN_INPUT);
+ low_feature = sensors_get_subfeature(chip_name,
+ main_feature,
+ SENSORS_SUBFEATURE_IN_MIN);
+ high_feature = sensors_get_subfeature(chip_name,
+ main_feature,
+ SENSORS_SUBFEATURE_IN_MAX);
+ break;
+ case SENSORS_FEATURE_FAN:
+ type = FAN_SENSOR;
+ input_feature = sensors_get_subfeature(chip_name,
+ main_feature,
+ SENSORS_SUBFEATURE_FAN_INPUT);
+ low_feature = sensors_get_subfeature(chip_name,
+ main_feature,
+ SENSORS_SUBFEATURE_FAN_MIN);
+ // no fan max feature
+ high_feature = NULL;
+ break;
+ case SENSORS_FEATURE_TEMP:
+ type = TEMP_SENSOR;
+ input_feature = sensors_get_subfeature(chip_name,
+ main_feature,
+ SENSORS_SUBFEATURE_TEMP_INPUT);
+ low_feature = sensors_get_subfeature(chip_name,
+ main_feature,
+ SENSORS_SUBFEATURE_TEMP_MIN);
+ high_feature = sensors_get_subfeature(chip_name,
+ main_feature,
+ SENSORS_SUBFEATURE_TEMP_MAX);
+ if (!high_feature)
+ high_feature = sensors_get_subfeature(chip_name,
+ main_feature,
+ SENSORS_SUBFEATURE_TEMP_CRIT);
+ break;
+ default:
+ g_debug("%s: %d: error determining type for: %s\n",
+ __FILE__, __LINE__, chip_name_string);
+ continue;
+ }
+
+ if (!input_feature)
+ {
+ g_debug("%s: %d: could not get input subfeature for: %s\n",
+ __FILE__, __LINE__, chip_name_string);
+ continue;
+ }
+ // if still here we got input feature so get label
+ label = sensors_get_label(chip_name, main_feature);
+ if (!label)
+ {
+ g_debug("%s: %d: error: could not get label for: %s\n",
+ __FILE__, __LINE__, chip_name_string);
+ continue;
+ }
+
+ g_assert(chip_name_string && label);
+
+ icon = get_sensor_icon(type);
+ visible = (type == TEMP_SENSOR ? TRUE : FALSE);
+ sensors_applet_plugin_default_sensor_limits(type,
+ &low,
+ &high);
+ if (low_feature) {
+ sensors_get_value(chip_name, low_feature->number, &low);
+ }
+
+ if (high_feature) {
+ sensors_get_value(chip_name, high_feature->number, &high);
+ }
+
+
+ if (sensors_get_value(chip_name, input_feature->number, &value) < 0) {
+ g_debug("%s: %d: error: could not get value for input feature of sensor: %s\n",
+ __FILE__, __LINE__, chip_name_string);
+ free(label);
+ continue;
+ }
+
+ g_debug("for chip %s (type %s) got label %s and value %f", chip_name_string,
+ (type == TEMP_SENSOR ? "temp" :
+ (type == FAN_SENSOR ? "fan" :
+ (type == VOLTAGE_SENSOR ? "voltage" : "error"))), label, value);
+
+ path = g_strdup_printf ("sensor://%s/%d", chip_name_string, input_feature->number);
+ g_hash_table_insert(hash_table, g_strdup(path), (void *)chip_name);
+ sensors_applet_plugin_add_sensor_with_limits(&sensors,
+ path,
+ label,
+ label,
+ type,
+ visible,
+ low,
+ high,
+ icon,
+ DEFAULT_GRAPH_COLOR);
+ }
+ g_free(chip_name_string);
+
+
+ }
+#endif
+
+ return sensors;
+}
+
+static gdouble libsensors_plugin_get_sensor_value(const gchar *path,
+ const gchar *id,
+ SensorType type,
+ GError **error) {
+ gdouble result = 0;
+ regmatch_t m[3];
+
+ /* parse the uri into a (chip, feature) tuplet */
+ if (regexec (&uri_re, path, 3, m, 0) == 0) {
+ const sensors_chip_name *found_chip;
+ int feature;
+ int i;
+
+ if ((found_chip = g_hash_table_lookup(hash_table,
+ path)) != NULL)
+ {
+ gdouble value;
+ feature = atoi(path + m[2].rm_so);
+#if SENSORS_API_VERSION < 0x400
+ /* retrieve the value of the feature */
+ if (sensors_get_feature (*found_chip, feature, &value) == 0) {
+ result = value;
+ } else {
+ g_set_error (error, SENSORS_APPLET_PLUGIN_ERROR, LIBSENSORS_MISSING_FEATURE_ERROR, "Error retrieving sensor value");
+ }
+#else
+ if (sensors_get_value(found_chip, feature, &value) >= 0) {
+ result = value;
+ } else {
+ g_set_error (error, SENSORS_APPLET_PLUGIN_ERROR, LIBSENSORS_MISSING_FEATURE_ERROR, "Error retrieving sensor value");
+ }
+#endif
+ } else {
+ g_set_error (error, SENSORS_APPLET_PLUGIN_ERROR, LIBSENSORS_CHIP_NOT_FOUND_ERROR, "Chip not found");
+ }
+ } else {
+ g_set_error (error, SENSORS_APPLET_PLUGIN_ERROR, LIBSENSORS_REGEX_URL_COMPILE_ERROR, "Error compiling URL regex");
+ }
+ return result;
+}
+
+
+static GList *libsensors_plugin_init() {
+ /* compile the regular expressions */
+ if (regcomp(&uri_re, "^sensor://([a-z0-9_-]+)/([0-9]+)$",
+ REG_EXTENDED | REG_ICASE) != 0) {
+ g_debug("Error compiling regexp...not initing libsensors sensors interface");
+ return NULL;
+ }
+
+ /* create hash table to associate path strings with sensors_chip_name
+ * pointers - make sure it free's the keys strings on destroy */
+ hash_table = g_hash_table_new_full(g_str_hash,
+ g_str_equal,
+ g_free,
+ NULL);
+ return libsensors_plugin_get_sensors();
+}
+
+
+const gchar *sensors_applet_plugin_name(void)
+{
+ return plugin_name;
+}
+
+GList *sensors_applet_plugin_init(void)
+{
+ return libsensors_plugin_init();
+}
+
+gdouble sensors_applet_plugin_get_sensor_value(const gchar *path,
+ const gchar *id,
+ SensorType type,
+ GError **error) {
+ return libsensors_plugin_get_sensor_value(path, id, type, error);
+}
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