+/**
+ * collectd - src/owfs.c
+ * Copyright (C) 2008 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.
+ *
+ * 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
+ *
+ * Authors:
+ * Florian octo Forster <octo at noris.net>
+ **/
+
+#include "collectd.h"
+#include "common.h"
+#include "plugin.h"
+#include "utils_ignorelist.h"
+
+#include <owcapi.h>
+
+#define OW_FAMILY_MAX_FEATURES 2
+struct ow_family_features_s
+{
+ char *family;
+ struct
+ {
+ char filename[DATA_MAX_NAME_LEN];
+ char type[DATA_MAX_NAME_LEN];
+ char type_instance[DATA_MAX_NAME_LEN];
+ } features[OW_FAMILY_MAX_FEATURES];
+ size_t features_num;
+};
+typedef struct ow_family_features_s ow_family_features_t;
+
+/* see http://owfs.sourceforge.net/ow_table.html for a list of families */
+static ow_family_features_t ow_family_features[] =
+{
+ {
+ /* family = */ "10",
+ {
+ {
+ /* filename = */ "temperature",
+ /* type = */ "temperature",
+ /* type_instance = */ ""
+ }
+ },
+ /* features_num = */ 1
+ }
+};
+static int ow_family_features_num = STATIC_ARRAY_SIZE (ow_family_features);
+
+static char *device_g = NULL;
+
+static const char *config_keys[] =
+{
+ "Alias",
+ "Device",
+ "IgnoreSelected",
+ "Sensor",
+};
+static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
+
+static ignorelist_t *sensor_list;
+
+static int cow_load_config (const char *key, const char *value)
+{
+ if (sensor_list == NULL)
+ sensor_list = ignorelist_create (1);
+
+ if (strcasecmp (key, "Sensor") == 0)
+ {
+ if (ignorelist_add (sensor_list, value))
+ {
+ ERROR ("sensors plugin: "
+ "Cannot add value to ignorelist.");
+ return (1);
+ }
+ }
+ else if (strcasecmp (key, "IgnoreSelected") == 0)
+ {
+ ignorelist_set_invert (sensor_list, 1);
+ if ((strcasecmp (value, "True") == 0)
+ || (strcasecmp (value, "Yes") == 0)
+ || (strcasecmp (value, "On") == 0))
+ ignorelist_set_invert (sensor_list, 0);
+ }
+ else if (strcasecmp (key, "Device") == 0)
+ {
+ char *temp;
+ temp = strdup (value);
+ if (temp == NULL)
+ {
+ ERROR ("onewire plugin: strdup failed.");
+ return (1);
+ }
+ sfree (device_g);
+ device_g = temp;
+ }
+ else if (strcasecmp (key, "Alias") == 0)
+ {
+ /* azogtodo alias-list */
+ }
+ else
+ {
+ return (-1);
+ }
+
+ return (0);
+}
+
+static int cow_init (void)
+{
+ int status;
+
+ if (device_g == NULL)
+ {
+ ERROR ("onewire plugin: cow_init: No device configured.");
+ return (-1);
+ }
+
+ status = (int) OW_init (device_g);
+ if (status != 0)
+ {
+ ERROR ("onewire plugin: OW_init(%s) failed: %i.", device_g, status);
+ return (1);
+ }
+
+ return (0);
+} /* int cow_init */
+
+static int cow_read_values (const char *path, const char *name,
+ const ow_family_features_t *family_info)
+{
+ value_t values[1];
+ value_list_t vl = VALUE_LIST_INIT;
+ int success = 0;
+ size_t i;
+
+ if (sensor_list != NULL)
+ {
+ DEBUG ("onewire plugin: Checking ignorelist for `%s'", name);
+ if (ignorelist_match (sensor_list, name) != 0)
+ return 0;
+ }
+
+ vl.values = values;
+ vl.values_len = 1;
+ vl.time = time (NULL);
+
+ sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+ sstrncpy (vl.plugin, "onewire", sizeof (vl.plugin));
+ sstrncpy (vl.plugin_instance, name, sizeof (vl.plugin_instance));
+
+ for (i = 0; i < family_info->features_num; i++)
+ {
+ char *buffer;
+ size_t buffer_size;
+ int status;
+
+ char file[4096];
+ char *endptr;
+
+ snprintf (file, sizeof (file), "%s/%s",
+ path, family_info->features[i].filename);
+ file[sizeof (file) - 1] = 0;
+
+ buffer = NULL;
+ buffer_size = 0;
+ status = OW_get (file, &buffer, &buffer_size);
+ if (status < 0)
+ {
+ ERROR ("onewire plugin: OW_get (%s/%s) failed. status = %#x;",
+ path, family_info->features[i].filename, status);
+ return (-1);
+ }
+
+ endptr = NULL;
+ values[0].gauge = strtod (buffer, &endptr);
+ if (endptr == NULL)
+ {
+ ERROR ("onewire plugin: Buffer is not a number: %s", buffer);
+ status = -1;
+ continue;
+ }
+
+ sstrncpy (vl.type, family_info->features[i].type, sizeof (vl.type));
+ sstrncpy (vl.type_instance, family_info->features[i].type_instance,
+ sizeof (vl.type_instance));
+
+ plugin_dispatch_values (&vl);
+ success++;
+
+ free (buffer);
+ } /* for (i = 0; i < features_num; i++) */
+
+ return ((success > 0) ? 0 : -1);
+} /* int cow_read_values */
+
+static int cow_read_bus (const char *path)
+{
+ char *buffer;
+ size_t buffer_size;
+ int status;
+
+ char *buffer_ptr;
+ char *dummy;
+ char *saveptr;
+ char subpath[4096];
+ char family_dummy[3]; /* a family only has 2 digits */
+
+ status = OW_get (path, &buffer, &buffer_size);
+ if (status < 0)
+ {
+ ERROR ("onewire plugin: OW_get (%s) failed. status = %#x;",
+ path, status);
+ return (-1);
+ }
+
+ dummy = buffer;
+ saveptr = NULL;
+ while ((buffer_ptr = strtok_r (dummy, ",/", &saveptr)) != NULL)
+ {
+ int i;
+
+ dummy = NULL;
+
+ snprintf (subpath, sizeof (subpath), "%s/%s", path, buffer_ptr);
+ subpath[sizeof (subpath) - 1] = 0;
+
+ for (i = 0; i < ow_family_features_num; i++)
+ {
+ snprintf (family_dummy, sizeof (family_dummy), "%s%s", ow_family_features[i].family, ".");
+ if (strncmp (family_dummy, buffer_ptr, strlen (family_dummy)) != 0)
+ continue;
+
+ cow_read_values (subpath, buffer_ptr + 3, ow_family_features + i);
+ }
+ } /* while (strtok_r) */
+
+ free (buffer);
+ return (0);
+} /* int cow_read_bus */
+
+static int cow_read (void)
+{
+ char *buffer;
+ size_t buffer_size;
+ int status;
+
+ char *buffer_ptr;
+ char *dummy;
+ char *saveptr;
+
+ status = OW_get ("/uncached/", &buffer, &buffer_size);
+ if (status < 0)
+ {
+ ERROR ("onewire plugin: OW_get (\"/\") failed. status = %#x;",
+ status);
+ return (-1);
+ }
+
+ printf ("-- 8< --\n");
+
+ dummy = buffer;
+ saveptr = NULL;
+ while ((buffer_ptr = strtok_r (dummy, ",/", &saveptr)) != NULL)
+ {
+ dummy = NULL;
+ if (strncmp ("bus", buffer_ptr, strlen ("bus")) == 0)
+ {
+ cow_read_bus (buffer_ptr);
+ }
+ } /* while (strtok_r) */
+
+ printf ("-- >8 --\n");
+
+ free (buffer);
+
+ return (0);
+} /* int cow_read */
+
+static int cow_shutdown (void)
+{
+ OW_finish ();
+ ignorelist_free (sensor_list);
+ return (0);
+} /* int cow_shutdown */
+
+void module_register (void)
+{
+ plugin_register_init ("onewire", cow_init);
+ plugin_register_read ("onewire", cow_read);
+ plugin_register_shutdown ("onewire", cow_shutdown);
+ plugin_register_config ("onewire", cow_load_config,
+ config_keys, config_keys_num);
+}
+
+/* vim: set sw=2 sts=2 ts=8 et fdm=marker cindent : */