+ char *key;
+ time_t *value;
+ avl_iterator_t *iter;
+
+ time_t curtime = time (NULL);
+
+ iter = avl_get_iterator (cache_tree);
+ while (avl_iterator_next (iter, (void *) &key, (void *) &value) == 0)
+ {
+ if ((curtime - *value) <= cache_flush_interval)
+ continue;
+ tmp = (char **) realloc (keys,
+ (keys_num + 1) * sizeof (char *));
+ if (tmp == NULL)
+ {
+ sfree (keys);
+ avl_iterator_destroy (iter);
+ ERROR ("network plugin: cache_flush: realloc"
+ " failed.");
+ return (-1);
+ }
+ keys = tmp;
+ keys[keys_num] = key;
+ keys_num++;
+ } /* while (avl_iterator_next) */
+ avl_iterator_destroy (iter);
+
+ for (i = 0; i < keys_num; i++)
+ {
+ if (avl_remove (cache_tree, keys[i], (void *) &key,
+ (void *) &value) != 0)
+ {
+ WARNING ("network plugin: cache_flush: avl_remove"
+ " (%s) failed.", keys[i]);
+ continue;
+ }
+
+ sfree (key);
+ sfree (value);
+ }
+
+ sfree (keys);
+
+ DEBUG ("network plugin: cache_flush: Removed %i %s",
+ keys_num, (keys_num == 1) ? "entry" : "entries");
+ cache_flush_last = curtime;
+ return (0);
+} /* int cache_flush */
+
+static int cache_check (const char *type, const value_list_t *vl)
+{
+ char key[1024];
+ time_t *value = NULL;
+ int retval = -1;
+
+ if (cache_tree == NULL)
+ return (-1);
+
+ if (format_name (key, sizeof (key), vl->host, vl->plugin,
+ vl->plugin_instance, type, vl->type_instance))
+ return (-1);
+
+ pthread_mutex_lock (&cache_lock);
+
+ if (avl_get (cache_tree, key, (void *) &value) == 0)
+ {
+ if (*value < vl->time)
+ {
+ *value = vl->time;
+ retval = 0;
+ }
+ else
+ {
+ DEBUG ("network plugin: cache_check: *value = %i >= vl->time = %i",
+ (int) *value, (int) vl->time);
+ retval = 1;
+ }
+ }
+ else
+ {
+ char *key_copy = strdup (key);
+ value = malloc (sizeof (time_t));
+ if ((key_copy != NULL) && (value != NULL))
+ {
+ *value = vl->time;
+ avl_insert (cache_tree, key_copy, value);
+ retval = 0;
+ }
+ else
+ {
+ sfree (key_copy);
+ sfree (value);
+ }
+ }
+
+ if ((time (NULL) - cache_flush_last) > cache_flush_interval)
+ cache_flush ();
+
+ pthread_mutex_unlock (&cache_lock);
+
+ DEBUG ("network plugin: cache_check: key = %s; time = %i; retval = %i",
+ key, (int) vl->time, retval);
+
+ return (retval);
+} /* int cache_check */
+
+static int write_part_values (char **ret_buffer, int *ret_buffer_len,
+ const data_set_t *ds, const value_list_t *vl)
+{
+ part_values_t pv;
+ int i;
+
+ i = 6 + (9 * vl->values_len);
+ if (*ret_buffer_len < i)
+ return (-1);
+ *ret_buffer_len -= i;
+
+ pv.head = (part_header_t *) *ret_buffer;
+ pv.num_values = (uint16_t *) (pv.head + 1);
+ pv.values_types = (uint8_t *) (pv.num_values + 1);
+ pv.values = (value_t *) (pv.values_types + vl->values_len);
+ *ret_buffer = (void *) (pv.values + vl->values_len);
+
+ pv.head->type = htons (TYPE_VALUES);
+ pv.head->length = htons (6 + (9 * vl->values_len));
+ *pv.num_values = htons ((uint16_t) vl->values_len);
+
+ for (i = 0; i < vl->values_len; i++)
+ {
+ if (ds->ds[i].type == DS_TYPE_COUNTER)
+ {
+ pv.values_types[i] = DS_TYPE_COUNTER;
+ pv.values[i].counter = htonll (vl->values[i].counter);
+ }
+ else
+ {
+ pv.values_types[i] = DS_TYPE_GAUGE;
+ pv.values[i].gauge = vl->values[i].gauge;
+ }
+ } /* for (values) */
+
+ return (0);
+} /* int write_part_values */
+
+static int write_part_number (char **ret_buffer, int *ret_buffer_len,
+ int type, uint64_t value)
+{
+ part_number_t pn;
+
+ if (*ret_buffer_len < 12)
+ return (-1);
+
+ pn.head = (part_header_t *) *ret_buffer;
+ pn.value = (uint64_t *) (pn.head + 1);
+
+ pn.head->type = htons (type);
+ pn.head->length = htons (12);
+ *pn.value = htonll (value);
+
+ *ret_buffer = (char *) (pn.value + 1);
+ *ret_buffer_len -= 12;
+
+ return (0);
+} /* int write_part_number */
+
+static int write_part_string (char **ret_buffer, int *ret_buffer_len,
+ int type, const char *str, int str_len)
+{
+ part_string_t ps;
+ int len;
+
+ len = 4 + str_len + 1;
+ if (*ret_buffer_len < len)
+ return (-1);
+ *ret_buffer_len -= len;
+
+ ps.head = (part_header_t *) *ret_buffer;
+ ps.value = (char *) (ps.head + 1);
+
+ ps.head->type = htons ((uint16_t) type);
+ ps.head->length = htons ((uint16_t) str_len + 5);
+ if (str_len > 0)
+ memcpy (ps.value, str, str_len);
+ ps.value[str_len] = '\0';
+ *ret_buffer = (void *) (ps.value + (str_len + 1));
+
+ return (0);
+} /* int write_part_string */
+
+static int parse_part_values (void **ret_buffer, int *ret_buffer_len,
+ value_t **ret_values, int *ret_num_values)
+{
+ char *buffer = *ret_buffer;
+ int buffer_len = *ret_buffer_len;
+ part_values_t pv;
+ int i;
+
+ uint16_t h_length;
+ uint16_t h_type;
+ uint16_t h_num;
+
+ if (buffer_len < (15))
+ {
+ DEBUG ("network plugin: packet is too short: buffer_len = %i",
+ buffer_len);
+ return (-1);
+ }
+
+ pv.head = (part_header_t *) buffer;
+ h_length = ntohs (pv.head->length);
+ h_type = ntohs (pv.head->type);
+
+ assert (h_type == TYPE_VALUES);
+
+ pv.num_values = (uint16_t *) (pv.head + 1);
+ h_num = ntohs (*pv.num_values);
+
+ if (h_num != ((h_length - 6) / 9))
+ {
+ DEBUG ("`length' and `num of values' don't match");
+ return (-1);
+ }
+
+ pv.values_types = (uint8_t *) (pv.num_values + 1);
+ pv.values = (value_t *) (pv.values_types + h_num);
+
+ for (i = 0; i < h_num; i++)
+ if (pv.values_types[i] == DS_TYPE_COUNTER)
+ pv.values[i].counter = ntohll (pv.values[i].counter);
+
+ *ret_buffer = (void *) (pv.values + h_num);
+ *ret_buffer_len = buffer_len - h_length;
+ *ret_num_values = h_num;
+ *ret_values = pv.values;
+
+ return (0);
+} /* int parse_part_values */
+
+static int parse_part_number (void **ret_buffer, int *ret_buffer_len,
+ uint64_t *value)