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diff --git a/src/utils_cmd_putval.c b/src/utils_cmd_putval.c
--- /dev/null
+++ b/src/utils_cmd_putval.c
@@ -0,0 +1,265 @@
+/**
+ * collectd - src/utils_cmd_putval.c
+ * Copyright (C) 2007-2009 Florian octo Forster
+ *
+ * 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:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * 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.
+ *
+ * Authors:
+ * Florian octo Forster <octo at collectd.org>
+ **/
+
+#include "collectd.h"
+#include "common.h"
+#include "plugin.h"
+
+#include "utils_parse_option.h"
+
+#define print_to_socket(fh, ...) \
+ do { \
+ if (fprintf (fh, __VA_ARGS__) < 0) { \
+ char errbuf[1024]; \
+ WARNING ("handle_putval: failed to write to socket #%i: %s", \
+ fileno (fh), sstrerror (errno, errbuf, sizeof (errbuf))); \
+ return -1; \
+ } \
+ fflush(fh); \
+ } while (0)
+
+static int dispatch_values (const data_set_t *ds, value_list_t *vl,
+ FILE *fh, char *buffer)
+{
+ int status;
+
+ status = parse_values (buffer, vl, ds);
+ if (status != 0)
+ {
+ print_to_socket (fh, "-1 Parsing the values string failed.\n");
+ return (-1);
+ }
+
+ plugin_dispatch_values (vl);
+ return (0);
+} /* int dispatch_values */
+
+static int set_option (value_list_t *vl, const char *key, const char *value)
+{
+ if ((vl == NULL) || (key == NULL) || (value == NULL))
+ return (-1);
+
+ if (strcasecmp ("interval", key) == 0)
+ {
+ double tmp;
+ char *endptr;
+
+ endptr = NULL;
+ errno = 0;
+ tmp = strtod (value, &endptr);
+
+ if ((errno == 0) && (endptr != NULL)
+ && (endptr != value) && (tmp > 0.0))
+ vl->interval = DOUBLE_TO_CDTIME_T (tmp);
+ }
+ else
+ return (1);
+
+ return (0);
+} /* int parse_option */
+
+int handle_putval (FILE *fh, char *buffer)
+{
+ char *command;
+ char *identifier;
+ char *hostname;
+ char *plugin;
+ char *plugin_instance;
+ char *type;
+ char *type_instance;
+ int status;
+ int values_submitted;
+
+ char *identifier_copy;
+
+ const data_set_t *ds;
+ value_list_t vl = VALUE_LIST_INIT;
+
+ DEBUG ("utils_cmd_putval: handle_putval (fh = %p, buffer = %s);",
+ (void *) fh, buffer);
+
+ command = NULL;
+ status = parse_string (&buffer, &command);
+ if (status != 0)
+ {
+ print_to_socket (fh, "-1 Cannot parse command.\n");
+ return (-1);
+ }
+ assert (command != NULL);
+
+ if (strcasecmp ("PUTVAL", command) != 0)
+ {
+ print_to_socket (fh, "-1 Unexpected command: `%s'.\n", command);
+ return (-1);
+ }
+
+ identifier = NULL;
+ status = parse_string (&buffer, &identifier);
+ if (status != 0)
+ {
+ print_to_socket (fh, "-1 Cannot parse identifier.\n");
+ return (-1);
+ }
+ assert (identifier != NULL);
+
+ /* parse_identifier() modifies its first argument,
+ * returning pointers into it */
+ identifier_copy = sstrdup (identifier);
+
+ status = parse_identifier (identifier_copy, &hostname,
+ &plugin, &plugin_instance,
+ &type, &type_instance);
+ if (status != 0)
+ {
+ DEBUG ("handle_putval: Cannot parse identifier `%s'.",
+ identifier);
+ print_to_socket (fh, "-1 Cannot parse identifier `%s'.\n",
+ identifier);
+ sfree (identifier_copy);
+ return (-1);
+ }
+
+ if ((strlen (hostname) >= sizeof (vl.host))
+ || (strlen (plugin) >= sizeof (vl.plugin))
+ || ((plugin_instance != NULL)
+ && (strlen (plugin_instance) >= sizeof (vl.plugin_instance)))
+ || ((type_instance != NULL)
+ && (strlen (type_instance) >= sizeof (vl.type_instance))))
+ {
+ print_to_socket (fh, "-1 Identifier too long.\n");
+ sfree (identifier_copy);
+ return (-1);
+ }
+
+ sstrncpy (vl.host, hostname, sizeof (vl.host));
+ sstrncpy (vl.plugin, plugin, sizeof (vl.plugin));
+ sstrncpy (vl.type, type, sizeof (vl.type));
+ if (plugin_instance != NULL)
+ sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
+ if (type_instance != NULL)
+ sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
+
+ ds = plugin_get_ds (type);
+ if (ds == NULL) {
+ print_to_socket (fh, "-1 Type `%s' isn't defined.\n", type);
+ sfree (identifier_copy);
+ return (-1);
+ }
+
+ /* Free identifier_copy */
+ hostname = NULL;
+ plugin = NULL; plugin_instance = NULL;
+ type = NULL; type_instance = NULL;
+ sfree (identifier_copy);
+
+ vl.values_len = ds->ds_num;
+ vl.values = (value_t *) malloc (vl.values_len * sizeof (value_t));
+ if (vl.values == NULL)
+ {
+ print_to_socket (fh, "-1 malloc failed.\n");
+ return (-1);
+ }
+
+ /* All the remaining fields are part of the optionlist. */
+ values_submitted = 0;
+ while (*buffer != 0)
+ {
+ char *string = NULL;
+ char *value = NULL;
+
+ status = parse_option (&buffer, &string, &value);
+ if (status < 0)
+ {
+ /* parse_option failed, buffer has been modified.
+ * => we need to abort */
+ print_to_socket (fh, "-1 Misformatted option.\n");
+ return (-1);
+ }
+ else if (status == 0)
+ {
+ assert (string != NULL);
+ assert (value != NULL);
+ set_option (&vl, string, value);
+ continue;
+ }
+ /* else: parse_option but buffer has not been modified. This is
+ * the default if no `=' is found.. */
+
+ status = parse_string (&buffer, &string);
+ if (status != 0)
+ {
+ print_to_socket (fh, "-1 Misformatted value.\n");
+ return (-1);
+ }
+ assert (string != NULL);
+
+ status = dispatch_values (ds, &vl, fh, string);
+ if (status != 0)
+ {
+ /* An error has already been printed. */
+ return (-1);
+ }
+ values_submitted++;
+ } /* while (*buffer != 0) */
+ /* Done parsing the options. */
+
+ print_to_socket (fh, "0 Success: %i %s been dispatched.\n",
+ values_submitted,
+ (values_submitted == 1) ? "value has" : "values have");
+
+ sfree (vl.values);
+
+ return (0);
+} /* int handle_putval */
+
+int create_putval (char *ret, size_t ret_len, /* {{{ */
+ const data_set_t *ds, const value_list_t *vl)
+{
+ char buffer_ident[6 * DATA_MAX_NAME_LEN];
+ char buffer_values[1024];
+ int status;
+
+ status = FORMAT_VL (buffer_ident, sizeof (buffer_ident), vl);
+ if (status != 0)
+ return (status);
+ escape_string (buffer_ident, sizeof (buffer_ident));
+
+ status = format_values (buffer_values, sizeof (buffer_values),
+ ds, vl, /* store rates = */ 0);
+ if (status != 0)
+ return (status);
+ escape_string (buffer_values, sizeof (buffer_values));
+
+ ssnprintf (ret, ret_len,
+ "PUTVAL %s interval=%.3f %s",
+ buffer_ident,
+ (vl->interval > 0)
+ ? CDTIME_T_TO_DOUBLE (vl->interval)
+ : CDTIME_T_TO_DOUBLE (plugin_get_interval ()),
+ buffer_values);
+
+ return (0);
+} /* }}} int create_putval */