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diff --git a/src/match_timediff.c b/src/match_timediff.c
--- /dev/null
+++ b/src/match_timediff.c
@@ -0,0 +1,158 @@
+/**
+ * collectd - src/match_timediff.c
+ * Copyright (C) 2008,2009 Florian 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 Forster <octo at collectd.org>
+ **/
+
+#include "collectd.h"
+#include "common.h"
+#include "utils_cache.h"
+#include "filter_chain.h"
+
+#define SATISFY_ALL 0
+#define SATISFY_ANY 1
+
+/*
+ * private data types
+ */
+struct mt_match_s;
+typedef struct mt_match_s mt_match_t;
+struct mt_match_s
+{
+ cdtime_t future;
+ cdtime_t past;
+};
+
+/*
+ * internal helper functions
+ */
+static int mt_create (const oconfig_item_t *ci, void **user_data) /* {{{ */
+{
+ mt_match_t *m;
+ int status;
+ int i;
+
+ m = (mt_match_t *) malloc (sizeof (*m));
+ if (m == NULL)
+ {
+ ERROR ("mt_create: malloc failed.");
+ return (-ENOMEM);
+ }
+ memset (m, 0, sizeof (*m));
+
+ m->future = 0;
+ m->past = 0;
+
+ status = 0;
+ for (i = 0; i < ci->children_num; i++)
+ {
+ oconfig_item_t *child = ci->children + i;
+
+ if (strcasecmp ("Future", child->key) == 0)
+ status = cf_util_get_cdtime (child, &m->future);
+ else if (strcasecmp ("Past", child->key) == 0)
+ status = cf_util_get_cdtime (child, &m->past);
+ else
+ {
+ ERROR ("timediff match: The `%s' configuration option is not "
+ "understood and will be ignored.", child->key);
+ status = 0;
+ }
+
+ if (status != 0)
+ break;
+ }
+
+ /* Additional sanity-checking */
+ while (status == 0)
+ {
+ if ((m->future == 0) && (m->past == 0))
+ {
+ ERROR ("timediff match: Either `Future' or `Past' must be configured. "
+ "This match will be ignored.");
+ status = -1;
+ }
+
+ break;
+ }
+
+ if (status != 0)
+ {
+ free (m);
+ return (status);
+ }
+
+ *user_data = m;
+ return (0);
+} /* }}} int mt_create */
+
+static int mt_destroy (void **user_data) /* {{{ */
+{
+ if (user_data != NULL)
+ {
+ sfree (*user_data);
+ }
+
+ return (0);
+} /* }}} int mt_destroy */
+
+static int mt_match (const data_set_t __attribute__((unused)) *ds, /* {{{ */
+ const value_list_t *vl,
+ notification_meta_t __attribute__((unused)) **meta, void **user_data)
+{
+ mt_match_t *m;
+ cdtime_t now;
+
+ if ((user_data == NULL) || (*user_data == NULL))
+ return (-1);
+
+ m = *user_data;
+ now = cdtime ();
+
+ if (m->future != 0)
+ {
+ if (vl->time >= (now + m->future))
+ return (FC_MATCH_MATCHES);
+ }
+
+ if (m->past != 0)
+ {
+ if (vl->time <= (now - m->past))
+ return (FC_MATCH_MATCHES);
+ }
+
+ return (FC_MATCH_NO_MATCH);
+} /* }}} int mt_match */
+
+void module_register (void)
+{
+ match_proc_t mproc;
+
+ memset (&mproc, 0, sizeof (mproc));
+ mproc.create = mt_create;
+ mproc.destroy = mt_destroy;
+ mproc.match = mt_match;
+ fc_register_match ("timediff", mproc);
+} /* module_register */
+
+/* vim: set sw=2 sts=2 tw=78 et fdm=marker : */