another attempt at speeding this thing up.

cmd/bind/cleanup.go

@@ -38,24 +38,28 @@ func cleanBadDomains(domains []string) []string {
 	// remove allow-listed matches
 	total = len(domains)
 
-	for i, allowedItem := range config.Config.AllowLists {
-		log.Printf("[DEBUG] Processing %d of %d\n", i+1, len(config.Config.AllowLists))
+	// filter out bad regex
+	goodAllowedItemList := []string{}
+	for _, allowedItem := range config.Config.AllowLists {
+		_, err := regexp.Compile(allowedItem)
+		if err != nil {
+			log.Printf("[ERROR] Allow list item (%s) is not valid regex: %v\n", allowedItem, err)
+			break
+		}
+		goodAllowedItemList = append(goodAllowedItemList, allowedItem)
+	}
 
-		list = []string{}
-		for _, v := range domains {
-			r, err := regexp.Compile(allowedItem)
-			if err != nil {
-				log.Printf("[ERROR] Allow list item (%s) is not valid regex: %v\n", allowedItem, err)
-				break
-			}
-			if r.MatchString(v) {
+	list = []string{}
+	for _, v := range domains {
+		for _, allowedItem := range goodAllowedItemList {
+			if regexp.MustCompile(allowedItem).MatchString(v) {
 				log.Printf("[DEBUG] Removing allowed matching item: %s\n", v)
 			} else {
 				list = append(list, v)
 			}
 		}
-		domains = list
 	}
+	domains = list
 	log.Printf("[INFO] Allowed hosts removed: %d\n", total-len(domains))
 
 	log.Printf("[INFO] Total domains in list at end: %d.\n", len(domains))