+/** Match a string against a mask, defining wether case sensitivity applies,
+ * and defining wether or not to use CIDR rules first.
+ * @param case_sensitive True if the match is case sensitive
+ * @param str The string to check
+ * @param mask the mask to check against
+ * @param use_cidr_match True if CIDR matching rules should be applied first
+ * @return true if the strings match
+ */