| File: | plugins/libsensors/libsensors-plugin.c |
| Warning: | line 283, column 5 Value stored to 'i' is never read |
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| 1 | /* |
| 2 | * Copyright (C) 2005-2009 Alex Murray <murray.alex@gmail.com> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 17 | */ |
| 18 | |
| 19 | #ifdef HAVE_CONFIG_H1 |
| 20 | #include "config.h" |
| 21 | #endif /* HAVE_CONFIG_H */ |
| 22 | |
| 23 | #ifdef HAVE_STDLIB_H1 |
| 24 | #include <stdlib.h> |
| 25 | #endif |
| 26 | |
| 27 | #ifdef HAVE_STRING_H1 |
| 28 | #include <string.h> |
| 29 | #endif |
| 30 | |
| 31 | #ifdef HAVE_SYS_TYPES_H1 |
| 32 | #include <sys/types.h> |
| 33 | #endif |
| 34 | |
| 35 | #ifdef HAVE_SENSORS_SENSORS_H1 |
| 36 | #include <sensors/sensors.h> |
| 37 | #endif |
| 38 | |
| 39 | #include "libsensors-plugin.h" |
| 40 | |
| 41 | const gchar *plugin_name = "libsensors"; |
| 42 | |
| 43 | GHashTable *hash_table = NULL((void*)0); |
| 44 | |
| 45 | enum { |
| 46 | LIBSENSORS_CHIP_PARSE_ERROR, |
| 47 | LIBSENSORS_MISSING_FEATURE_ERROR, |
| 48 | LIBSENSORS_REGEX_URL_COMPILE_ERROR, |
| 49 | LIBSENSORS_CHIP_NOT_FOUND_ERROR |
| 50 | }; |
| 51 | |
| 52 | #if SENSORS_API_VERSION0x500 < 0x400 |
| 53 | #define LIBSENSORS_CONFIG_FILE "/etc/sensors.conf" |
| 54 | #define LIBSENSORS_ALTERNATIVE_CONFIG_FILE "/usr/local/etc/sensors.conf" |
| 55 | #endif |
| 56 | |
| 57 | GRegex *uri_re; |
| 58 | |
| 59 | static char *get_chip_name_string(const sensors_chip_name *chip) { |
| 60 | char *name; |
| 61 | |
| 62 | #if SENSORS_API_VERSION0x500 < 0x400 |
| 63 | /* taken from lm-sensors:prog/sensors/main.c:sprintf_chip_name */ |
| 64 | switch (chip->bus) { |
| 65 | case SENSORS_CHIP_NAME_BUS_ISA: |
| 66 | name = g_strdup_printf ("%s-isa-%04x", chip->prefix, chip->addr); |
| 67 | break; |
| 68 | case SENSORS_CHIP_NAME_BUS_DUMMY: |
| 69 | name = g_strdup_printf ("%s-%s-%04x", chip->prefix, chip->busname, chip->addr); |
| 70 | break; |
| 71 | case SENSORS_CHIP_NAME_BUS_PCI: |
| 72 | name = g_strdup_printf ("%s-pci-%04x", chip->prefix, chip->addr); |
| 73 | break; |
| 74 | default: |
| 75 | name = g_strdup_printf ("%s-i2c-%d-%02x", chip->prefix, chip->bus, chip->addr); |
| 76 | break; |
| 77 | } |
| 78 | |
| 79 | #else |
| 80 | /* adapted from lm-sensors:prog/sensors/main.c:sprintf_chip_name in lm-sensors-3.0 */ |
| 81 | #define BUF_SIZE200 200 |
| 82 | static char buf[BUF_SIZE200]; |
| 83 | if (sensors_snprintf_chip_name(buf, BUF_SIZE200, chip) < 0) { |
| 84 | name = NULL((void*)0); |
| 85 | } else { |
| 86 | name = g_strdup (buf); |
| 87 | } |
| 88 | #endif |
| 89 | |
| 90 | return name; |
| 91 | } |
| 92 | |
| 93 | #if SENSORS_API_VERSION0x500 < 0x400 |
| 94 | static SensorType get_sensor_type (const char *name) { |
| 95 | SensorType type = CURRENT_SENSOR; |
| 96 | |
| 97 | if (g_strrstr(name, "in")) { |
| 98 | type = VOLTAGE_SENSOR; |
| 99 | } |
| 100 | else if (g_strrstr(name, "fan")) { |
| 101 | type = FAN_SENSOR; |
| 102 | } |
| 103 | else if (g_strrstr(name, "temp")) { |
| 104 | type = TEMP_SENSOR; |
| 105 | } else { |
| 106 | g_debug("sensor %s not recognised as either voltage, fan or temp sensor - assuming is a current sensor", name); |
| 107 | type = CURRENT_SENSOR; |
| 108 | } |
| 109 | return type; |
| 110 | } |
| 111 | |
| 112 | /* If a sensor is 'interesting' to us then return its label, otherwise NULL. */ |
| 113 | static char *get_sensor_interesting_label (sensors_chip_name chip, int feature) { |
| 114 | char *label; |
| 115 | |
| 116 | if (sensors_get_ignored(chip, feature) && (sensors_get_label(chip, feature, &label) == 0)) { |
| 117 | if (! (strcmp ("alarms", label) == 0 || strncmp ("sensor", label, 6) == 0)) { |
| 118 | return label; |
| 119 | } else { |
| 120 | free (label); |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | return NULL((void*)0); |
| 125 | } |
| 126 | |
| 127 | static const sensors_feature_data * get_sensor_min_max(const sensors_chip_name *chip, |
| 128 | int *n1, int *n2, |
| 129 | int number, |
| 130 | gdouble *low_value, |
| 131 | gdouble *high_value) { |
| 132 | |
| 133 | const sensors_feature_data *data; |
| 134 | double value; |
| 135 | |
| 136 | /* The sub features are returned directly after the main feature by |
| 137 | sensors_get_all_features(), so no need to iterate over all features */ |
| 138 | while ((data = sensors_get_all_features (*chip, n1, n2)) != NULL((void*)0) && data->mapping == number) { |
| 139 | if ((data->mode & SENSORS_MODE_R1) && (sensors_get_feature(*chip, data->number, &value) == 0) && data->name != NULL((void*)0)) { |
| 140 | |
| 141 | if (g_str_has_suffix(data->name, "_min")) { |
| 142 | *low_value = value; |
| 143 | g_debug("overriding low value of sensor %s with value %f", data->name, value); |
| 144 | } else if (g_str_has_suffix(data->name, "_max")) { |
| 145 | *high_value = value; |
| 146 | g_debug("overriding high value of sensor %s with value %f", data->name, value); |
| 147 | } |
| 148 | } |
| 149 | } |
| 150 | return data; |
| 151 | } |
| 152 | |
| 153 | #endif |
| 154 | |
| 155 | static IconType get_sensor_icon (SensorType type) { |
| 156 | switch (type) { |
| 157 | case TEMP_SENSOR: |
| 158 | return CPU_ICON; |
| 159 | case FAN_SENSOR: |
| 160 | return FAN_ICON; |
| 161 | default: |
| 162 | return GENERIC_ICON; |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | #if SENSORS_API_VERSION0x500 < 0x400 |
| 167 | static void check_sensor_with_data(GList **sensors, |
| 168 | const char * const chip_name, |
| 169 | const sensors_chip_name *chip, |
| 170 | int *n1, int *n2, |
| 171 | const sensors_feature_data *data) { |
| 172 | |
| 173 | char *label; |
| 174 | double value; |
| 175 | SensorsAppletSensorInfo *sensor_info = NULL((void*)0); |
| 176 | |
| 177 | /* ... some of which are boring ... */ |
| 178 | if ((label = get_sensor_interesting_label (*chip, data->number))) { |
| 179 | /* ... and some of which are actually sensors */ |
| 180 | if ((data->mode & SENSORS_MODE_R1) && |
| 181 | (data->mapping == SENSORS_NO_MAPPING) && |
| 182 | (sensors_get_feature(*chip, data->number, &value) == 0)) { /* make sure we can actually get a value for it */ |
| 183 | |
| 184 | SensorType type; |
| 185 | gboolean visible; |
| 186 | IconType icon; |
| 187 | gdouble low_value, high_value; |
| 188 | |
| 189 | gchar *url; |
| 190 | |
| 191 | type = get_sensor_type (data->name); |
| 192 | visible = (type == TEMP_SENSOR ? TRUE(!(0)) : FALSE(0)); |
| 193 | icon = get_sensor_icon(type); |
| 194 | |
| 195 | /* the 'path' contains all the information we need to identify this sensor later */ |
| 196 | url = g_strdup_printf ("sensor://%s/%d", chip_name, data->number); |
| 197 | |
| 198 | /* get low and high values */ |
| 199 | sensors_applet_plugin_default_sensor_limits(type, &low_value, &high_value); |
| 200 | |
| 201 | data = get_sensor_min_max(chip, n1, n2, data->number, &low_value, &high_value); |
| 202 | if (data != NULL((void*)0)) { |
| 203 | /* try adding this one */ |
| 204 | /* 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 */ |
| 205 | check_sensor_with_data(sensors, chip_name, chip, n1, n2, data); |
| 206 | } |
| 207 | |
| 208 | g_hash_table_insert(hash_table, g_strdup(url), (void *)chip); |
| 209 | /* the id identifies a particular sensor for the user; */ |
| 210 | /* we default to the label returned by libsensors */ |
| 211 | sensors_applet_plugin_add_sensor_with_limits(sensors, |
| 212 | url, |
| 213 | label, |
| 214 | label, |
| 215 | type, |
| 216 | visible, |
| 217 | low_value, |
| 218 | high_value, |
| 219 | icon, |
| 220 | DEFAULT_GRAPH_COLOR"#ff0000"); |
| 221 | g_free(url); |
| 222 | } |
| 223 | free (label); |
| 224 | } |
| 225 | |
| 226 | } |
| 227 | |
| 228 | #endif |
| 229 | |
| 230 | static GList *libsensors_plugin_get_sensors(void) { |
| 231 | const sensors_chip_name *chip_name; |
| 232 | int i; |
| 233 | GList *sensors = NULL((void*)0); |
| 234 | |
| 235 | #if SENSORS_API_VERSION0x500 < 0x400 |
| 236 | FILE *file; |
| 237 | g_debug("%s: using libsensors version < 4", __FUNCTION__); |
| 238 | |
| 239 | /* try to open config file, otherwise try alternate config |
| 240 | * file - if neither succeed, exit */ |
| 241 | if ((file = fopen (LIBSENSORS_CONFIG_FILE, "r")) == NULL((void*)0)) { |
| 242 | if ((file = fopen (LIBSENSORS_ALTERNATIVE_CONFIG_FILE, "r")) == NULL((void*)0)) { |
| 243 | g_debug("%s: error opening libsensors config file... ", __FUNCTION__); |
| 244 | return sensors; |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | /* at this point should have an open config file, if is not |
| 249 | * valid, close file and return */ |
| 250 | if (sensors_init(file) != 0) { |
| 251 | fclose(file); |
| 252 | g_debug("%s: error initing libsensors from config file...", __FUNCTION__); |
| 253 | return sensors; |
| 254 | } |
| 255 | fclose(file); |
| 256 | |
| 257 | /* libsensors exposes a number of chips - ... */ |
| 258 | i = 0; |
| 259 | while ((chip_name = sensors_get_detected_chips (&i)) != NULL((void*)0)) { |
| 260 | char *chip_name_string; |
| 261 | const sensors_feature_data *data; |
| 262 | int n1 = 0, n2 = 0; |
| 263 | |
| 264 | chip_name_string = get_chip_name_string(chip_name); |
| 265 | |
| 266 | /* ... each of which has one or more 'features' ... */ |
| 267 | while ((data = sensors_get_all_features (*chip_name, &n1, &n2)) != NULL((void*)0)) { /* error */ |
| 268 | /* fill in list for us */ |
| 269 | check_sensor_with_data(&sensors, chip_name_string, chip_name, &n1, &n2, data); |
| 270 | } |
| 271 | g_free (chip_name_string); |
| 272 | } |
| 273 | |
| 274 | #else |
| 275 | g_debug("%s: using libsensors version >= 4", __FUNCTION__); |
| 276 | |
| 277 | int nr = 0; |
| 278 | if (sensors_init(NULL((void*)0)) != 0) { |
| 279 | g_debug("%s: error initing libsensors", __FUNCTION__); |
| 280 | return sensors; |
| 281 | } |
| 282 | |
| 283 | i = 0; |
Value stored to 'i' is never read | |
| 284 | while ((chip_name = sensors_get_detected_chips(NULL((void*)0), &nr))) { |
| 285 | |
| 286 | char *chip_name_string, *label; |
| 287 | const sensors_subfeature *input_feature; |
| 288 | const sensors_subfeature *low_feature; |
| 289 | const sensors_subfeature *high_feature; |
| 290 | const sensors_feature *main_feature; |
| 291 | SensorType type; |
| 292 | gint nr1 = 0; |
| 293 | gdouble value, low, high; |
| 294 | gchar *path; |
| 295 | gboolean visible; |
| 296 | IconType icon; |
| 297 | |
| 298 | chip_name_string = get_chip_name_string(chip_name); |
| 299 | if (chip_name_string == NULL((void*)0)) { |
| 300 | g_debug("%s: %d: error getting name string for sensor: %s\n", __FILE__"libsensors-plugin.c", __LINE__300, chip_name->path); |
| 301 | continue; |
| 302 | } |
| 303 | |
| 304 | while ((main_feature = sensors_get_features(chip_name, &nr1))) { |
| 305 | switch (main_feature->type) { |
| 306 | case SENSORS_FEATURE_IN: |
| 307 | type = VOLTAGE_SENSOR; |
| 308 | input_feature = sensors_get_subfeature(chip_name, main_feature, SENSORS_SUBFEATURE_IN_INPUT); |
| 309 | low_feature = sensors_get_subfeature(chip_name, main_feature, SENSORS_SUBFEATURE_IN_MIN); |
| 310 | high_feature = sensors_get_subfeature(chip_name, main_feature, SENSORS_SUBFEATURE_IN_MAX); |
| 311 | break; |
| 312 | |
| 313 | case SENSORS_FEATURE_FAN: |
| 314 | type = FAN_SENSOR; |
| 315 | input_feature = sensors_get_subfeature(chip_name, main_feature, SENSORS_SUBFEATURE_FAN_INPUT); |
| 316 | low_feature = sensors_get_subfeature(chip_name, main_feature, SENSORS_SUBFEATURE_FAN_MIN); |
| 317 | /* no fan max feature */ |
| 318 | high_feature = NULL((void*)0); |
| 319 | break; |
| 320 | |
| 321 | case SENSORS_FEATURE_TEMP: |
| 322 | type = TEMP_SENSOR; |
| 323 | input_feature = sensors_get_subfeature(chip_name, main_feature, SENSORS_SUBFEATURE_TEMP_INPUT); |
| 324 | low_feature = sensors_get_subfeature(chip_name, main_feature, SENSORS_SUBFEATURE_TEMP_MIN); |
| 325 | high_feature = sensors_get_subfeature(chip_name, main_feature, SENSORS_SUBFEATURE_TEMP_MAX); |
| 326 | if (!high_feature) |
| 327 | high_feature = sensors_get_subfeature(chip_name, main_feature, SENSORS_SUBFEATURE_TEMP_CRIT); |
| 328 | break; |
| 329 | |
| 330 | default: |
| 331 | g_debug("%s: %d: error determining type for: %s\n", __FILE__"libsensors-plugin.c", __LINE__331, chip_name_string); |
| 332 | continue; |
| 333 | } |
| 334 | |
| 335 | if (!input_feature) { |
| 336 | g_debug("%s: %d: could not get input subfeature for: %s\n", __FILE__"libsensors-plugin.c", __LINE__336, chip_name_string); |
| 337 | continue; |
| 338 | } |
| 339 | |
| 340 | /* if still here we got input feature so get label */ |
| 341 | label = sensors_get_label(chip_name, main_feature); |
| 342 | if (!label) { |
| 343 | g_debug("%s: %d: error: could not get label for: %s\n", __FILE__"libsensors-plugin.c", __LINE__343, chip_name_string); |
| 344 | continue; |
| 345 | } |
| 346 | |
| 347 | g_assert(chip_name_string && label)do { if (chip_name_string && label) ; else g_assertion_message_expr ("sensors-applet", "libsensors-plugin.c", 347, ((const char* ) (__func__)), "chip_name_string && label"); } while ( 0); |
| 348 | |
| 349 | icon = get_sensor_icon(type); |
| 350 | visible = (type == TEMP_SENSOR ? TRUE(!(0)) : FALSE(0)); |
| 351 | sensors_applet_plugin_default_sensor_limits(type, &low, &high); |
| 352 | if (low_feature) { |
| 353 | sensors_get_value(chip_name, low_feature->number, &low); |
| 354 | } |
| 355 | |
| 356 | if (high_feature) { |
| 357 | sensors_get_value(chip_name, high_feature->number, &high); |
| 358 | } |
| 359 | |
| 360 | if (sensors_get_value(chip_name, input_feature->number, &value) < 0) { |
| 361 | g_debug("%s: %d: error: could not get value for input feature of sensor: %s\n", __FILE__"libsensors-plugin.c", __LINE__361, chip_name_string); |
| 362 | free(label); |
| 363 | continue; |
| 364 | } |
| 365 | |
| 366 | g_debug("for chip %s (type %s) got label %s and value %f", chip_name_string, |
| 367 | (type == TEMP_SENSOR ? "temp" : (type == FAN_SENSOR ? "fan" : (type == VOLTAGE_SENSOR ? "voltage" : "error"))), label, value); |
| 368 | |
| 369 | path = g_strdup_printf ("sensor://%s/%d", chip_name_string, input_feature->number); |
| 370 | g_hash_table_insert(hash_table, g_strdup(path), (void *)chip_name); |
| 371 | |
| 372 | sensors_applet_plugin_add_sensor_with_limits(&sensors, |
| 373 | path, |
| 374 | label, |
| 375 | label, |
| 376 | type, |
| 377 | visible, |
| 378 | low, |
| 379 | high, |
| 380 | icon, |
| 381 | DEFAULT_GRAPH_COLOR"#ff0000"); |
| 382 | } |
| 383 | g_free(chip_name_string); |
| 384 | |
| 385 | } |
| 386 | #endif |
| 387 | |
| 388 | return sensors; |
| 389 | } |
| 390 | |
| 391 | static gdouble libsensors_plugin_get_sensor_value(const gchar *path, |
| 392 | const gchar *id, |
| 393 | SensorType type, |
| 394 | GError **error) { |
| 395 | gdouble result = 0; |
| 396 | GMatchInfo *m; |
| 397 | |
| 398 | /* parse the uri into a (chip, feature) tuplet */ |
| 399 | g_regex_match (uri_re, path, 0, &m); |
| 400 | if (g_match_info_matches (m)) { |
| 401 | const sensors_chip_name *found_chip; |
| 402 | int feature; |
| 403 | int i; |
| 404 | |
| 405 | if ((found_chip = g_hash_table_lookup(hash_table, path)) != NULL((void*)0)) { |
| 406 | gdouble value; |
| 407 | gchar *feature_str; |
| 408 | |
| 409 | feature_str = g_match_info_fetch (m, 1); |
| 410 | feature = atoi(feature_str); |
| 411 | g_free (feature_str); |
| 412 | |
| 413 | #if SENSORS_API_VERSION0x500 < 0x400 |
| 414 | /* retrieve the value of the feature */ |
| 415 | if (sensors_get_feature (*found_chip, feature, &value) == 0) { |
| 416 | result = value; |
| 417 | } else { |
| 418 | g_set_error (error, SENSORS_APPLET_PLUGIN_ERROR(sensors_applet_plugin_error_quark()), LIBSENSORS_MISSING_FEATURE_ERROR, "Error retrieving sensor value"); |
| 419 | } |
| 420 | #else |
| 421 | if (sensors_get_value(found_chip, feature, &value) >= 0) { |
| 422 | result = value; |
| 423 | } else { |
| 424 | g_set_error (error, SENSORS_APPLET_PLUGIN_ERROR(sensors_applet_plugin_error_quark()), LIBSENSORS_MISSING_FEATURE_ERROR, "Error retrieving sensor value"); |
| 425 | } |
| 426 | #endif |
| 427 | |
| 428 | } else { |
| 429 | g_set_error (error, SENSORS_APPLET_PLUGIN_ERROR(sensors_applet_plugin_error_quark()), LIBSENSORS_CHIP_NOT_FOUND_ERROR, "Chip not found"); |
| 430 | } |
| 431 | } else { |
| 432 | g_set_error (error, SENSORS_APPLET_PLUGIN_ERROR(sensors_applet_plugin_error_quark()), LIBSENSORS_REGEX_URL_COMPILE_ERROR, "Error compiling URL regex: Not match"); |
| 433 | } |
| 434 | g_match_info_free (m); |
| 435 | return result; |
| 436 | } |
| 437 | |
| 438 | |
| 439 | static GList *libsensors_plugin_init() { |
| 440 | GError *err = NULL((void*)0); |
| 441 | |
| 442 | /* compile the regular expressions */ |
| 443 | uri_re = g_regex_new ("^sensor://[a-z0-9_-]+/([0-9]+)$", G_REGEX_CASELESS | G_REGEX_OPTIMIZE, G_REGEX_MATCH_ANCHORED, &err); |
| 444 | if (err) { |
| 445 | g_debug("Error compiling regexp: %s\nnot initing libsensors sensors interface", err->message); |
| 446 | g_error_free (err); |
| 447 | return NULL((void*)0); |
| 448 | } |
| 449 | |
| 450 | /* create hash table to associate path strings with sensors_chip_name |
| 451 | * pointers - make sure it free's the keys strings on destroy */ |
| 452 | hash_table = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, NULL((void*)0)); |
| 453 | |
| 454 | return libsensors_plugin_get_sensors(); |
| 455 | } |
| 456 | |
| 457 | const gchar *sensors_applet_plugin_name(void) |
| 458 | { |
| 459 | return plugin_name; |
| 460 | } |
| 461 | |
| 462 | GList *sensors_applet_plugin_init(void) |
| 463 | { |
| 464 | return libsensors_plugin_init(); |
| 465 | } |
| 466 | |
| 467 | gdouble sensors_applet_plugin_get_sensor_value(const gchar *path, |
| 468 | const gchar *id, |
| 469 | SensorType type, |
| 470 | GError **error) { |
| 471 | |
| 472 | return libsensors_plugin_get_sensor_value(path, id, type, error); |
| 473 | } |