* collectd - src/wireless.c
* Copyright (C) 2006,2007 Florian octo Forster
*
- * 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; only version 2 of the License is applicable.
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
*
- * 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.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*
- * 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
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
*
- * Author:
- * Florian octo Forster <octo at verplant.org>
+ * Authors:
+ * Florian octo Forster <octo at collectd.org>
**/
#include "collectd.h"
+
#include "common.h"
#include "plugin.h"
#if !KERNEL_LINUX
-# error "No applicable input method."
+#error "No applicable input method."
#endif
#define WIRELESS_PROC_FILE "/proc/net/wireless"
/*
* dbm = 10 * log_{10} (1000 * power / W)
- * power = 10^(dbm/10) * W/1000
+ * power = 10^(dbm/10) * W/1000
*/
watt = pow (10.0, (dbm / 10.0)) / 1000.0;
- return (watt);
+ return watt;
}
#endif
-static void wireless_submit (const char *plugin_instance, const char *type,
- double value)
-{
- value_t values[1];
- value_list_t vl = VALUE_LIST_INIT;
-
- values[0].gauge = value;
+static void wireless_submit(const char *plugin_instance, const char *type,
+ double value) {
+ value_list_t vl = VALUE_LIST_INIT;
- vl.values = values;
- vl.values_len = 1;
- vl.time = time (NULL);
- sstrncpy (vl.host, hostname_g, sizeof (vl.host));
- sstrncpy (vl.plugin, "wireless", sizeof (vl.plugin));
- sstrncpy (vl.plugin_instance, plugin_instance,
- sizeof (vl.plugin_instance));
- sstrncpy (vl.type, type, sizeof (vl.type));
+ vl.values = &(value_t){.gauge = value};
+ vl.values_len = 1;
+ sstrncpy(vl.plugin, "wireless", sizeof(vl.plugin));
+ sstrncpy(vl.plugin_instance, plugin_instance, sizeof(vl.plugin_instance));
+ sstrncpy(vl.type, type, sizeof(vl.type));
- plugin_dispatch_values (&vl);
+ plugin_dispatch_values(&vl);
} /* void wireless_submit */
#define POWER_MIN -90.0
#define POWER_MAX -50.0
-static double wireless_percent_to_power (double quality)
-{
- assert ((quality >= 0.0) && (quality <= 100.0));
+static double wireless_percent_to_power(double quality) {
+ assert((quality >= 0.0) && (quality <= 100.0));
- return ((quality * (POWER_MAX - POWER_MIN)) + POWER_MIN);
+ return (quality * (POWER_MAX - POWER_MIN)) + POWER_MIN;
} /* double wireless_percent_to_power */
-static int wireless_read (void)
-{
+static int wireless_read(void) {
#ifdef KERNEL_LINUX
- FILE *fh;
- char buffer[1024];
-
- char *device;
- double quality;
- double power;
- double noise;
-
- char *fields[8];
- int numfields;
-
- int devices_found;
- int len;
-
- /* there are a variety of names for the wireless device */
- if ((fh = fopen (WIRELESS_PROC_FILE, "r")) == NULL)
- {
- char errbuf[1024];
- WARNING ("wireless: fopen: %s",
- sstrerror (errno, errbuf, sizeof (errbuf)));
- return (-1);
- }
-
- devices_found = 0;
- while (fgets (buffer, sizeof (buffer), fh) != NULL)
- {
- char *endptr;
-
- numfields = strsplit (buffer, fields, 8);
-
- if (numfields < 5)
- continue;
-
- len = strlen (fields[0]) - 1;
- if (len < 1)
- continue;
- if (fields[0][len] != ':')
- continue;
- fields[0][len] = '\0';
-
- device = fields[0];
-
- quality = strtod (fields[2], &endptr);
- if (fields[2] == endptr)
- quality = -1.0; /* invalid */
-
- /* power [dBm] < 0.0 */
- power = strtod (fields[3], &endptr);
- if (fields[3] == endptr)
- power = 1.0; /* invalid */
- else if ((power >= 0.0) && (power <= 100.0))
- power = wireless_percent_to_power (power);
- else if ((power > 100.0) && (power <= 256.0))
- power = power - 256.0;
- else if (power > 0.0)
- power = 1.0; /* invalid */
-
- /* noise [dBm] < 0.0 */
- noise = strtod (fields[4], &endptr);
- if (fields[4] == endptr)
- noise = 1.0; /* invalid */
- else if ((noise >= 0.0) && (noise <= 100.0))
- noise = wireless_percent_to_power (noise);
- else if ((noise > 100.0) && (noise <= 256.0))
- noise = noise - 256.0;
- else if (noise > 0.0)
- noise = 1.0; /* invalid */
-
- wireless_submit (device, "signal_quality", quality);
- wireless_submit (device, "signal_power", power);
- wireless_submit (device, "signal_noise", noise);
-
- devices_found++;
- }
-
- fclose (fh);
-
- /* If no wireless devices are present return an error, so the plugin
- * code delays our read function. */
- if (devices_found == 0)
- return (-1);
+ FILE *fh;
+ char buffer[1024];
+
+ char *device;
+ double quality;
+ double power;
+ double noise;
+
+ char *fields[8];
+ int numfields;
+
+ int devices_found;
+ int len;
+
+ /* there are a variety of names for the wireless device */
+ if ((fh = fopen(WIRELESS_PROC_FILE, "r")) == NULL) {
+ char errbuf[1024];
+ WARNING("wireless: fopen: %s", sstrerror(errno, errbuf, sizeof(errbuf)));
+ return -1;
+ }
+
+ devices_found = 0;
+ while (fgets(buffer, sizeof(buffer), fh) != NULL) {
+ char *endptr;
+
+ numfields = strsplit(buffer, fields, 8);
+
+ if (numfields < 5)
+ continue;
+
+ len = strlen(fields[0]) - 1;
+ if (len < 1)
+ continue;
+ if (fields[0][len] != ':')
+ continue;
+ fields[0][len] = '\0';
+
+ device = fields[0];
+
+ quality = strtod(fields[2], &endptr);
+ if (fields[2] == endptr)
+ quality = -1.0; /* invalid */
+
+ /* power [dBm] < 0.0 */
+ power = strtod(fields[3], &endptr);
+ if (fields[3] == endptr)
+ power = 1.0; /* invalid */
+ else if ((power >= 0.0) && (power <= 100.0))
+ power = wireless_percent_to_power(power);
+ else if ((power > 100.0) && (power <= 256.0))
+ power = power - 256.0;
+ else if (power > 0.0)
+ power = 1.0; /* invalid */
+
+ /* noise [dBm] < 0.0 */
+ noise = strtod(fields[4], &endptr);
+ if (fields[4] == endptr)
+ noise = 1.0; /* invalid */
+ else if ((noise >= 0.0) && (noise <= 100.0))
+ noise = wireless_percent_to_power(noise);
+ else if ((noise > 100.0) && (noise <= 256.0))
+ noise = noise - 256.0;
+ else if (noise > 0.0)
+ noise = 1.0; /* invalid */
+
+ wireless_submit(device, "signal_quality", quality);
+ wireless_submit(device, "signal_power", power);
+ wireless_submit(device, "signal_noise", noise);
+
+ devices_found++;
+ }
+
+ fclose(fh);
+
+ /* If no wireless devices are present return an error, so the plugin
+ * code delays our read function. */
+ if (devices_found == 0)
+ return -1;
#endif /* KERNEL_LINUX */
- return (0);
+ return 0;
} /* int wireless_read */
-void module_register (void)
-{
- plugin_register_read ("wireless", wireless_read);
+void module_register(void) {
+ plugin_register_read("wireless", wireless_read);
} /* void module_register */
projects / collectd.git / blobdiff