diff --git a/phoned/filters.c b/phoned/filters.c
new file mode 100644
index 0000000..dbc53ba
--- /dev/null
+++ b/phoned/filters.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2005, Dan Ponte
+ *
+ * filters.c - conditional filtering of calls/other actions
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+/* $Amigan: phoned/phoned/filters.c,v 1.1 2005/06/10 00:21:49 dcp1990 Exp $ */
+#include <strings.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <pthread.h>
+#include <phoned.h>
+
+cond_t* topcond = 0x0;
+pthread_mutex_t condmx = PTHREAD_MUTEX_INITIALIZER;
+
+/* BROKEN! Do not use! */
+cond_t* add_condition(nameregex, numregex, action)
+	char* nameregex;
+	char* numregex;
+	int action;
+{
+	cont_t *c, *nc;
+	nc = malloc(sizeof(cond_t));
+	memset(nc, 0, sizeof(cond_t));
+	pthread_mutex_lock(condmx); /* ALWAYS do this if dealing with next, last or topcond!! */
+	if(topcond == 0x0)
+		topcond = nc;
+	else {
+		for(c = topcond; c->next != 0x0; c = c->next);
+		nc->last = c;
+		c->next = nc;
+	}
+	pthread_mutex_unlock(condmc); /* done */
+	nc->name = strdup(nameregex);
+	return nc;
+}