lib/legitbot/facebook.rb in legitbot-0.3.2 vs lib/legitbot/facebook.rb in legitbot-0.4.0

@@ -1,48 +1,22 @@
-require 'ipaddr'
+# frozen_string_literal: true
+
 require 'irrc'
-require 'interval_tree'
 
-module Legitbot
+module Legitbot # :nodoc:
   # https://developers.facebook.com/docs/sharing/webmasters/crawler
-
   class Facebook < BotMatch
     AS = 'AS32934'
 
-    def valid?
-      ip = IPAddr.new(@ip)
-      Facebook.valid_ips[ip.ipv4? ? :ipv4 : :ipv6].search(ip.to_i).size > 0
-    end
-
-    @mutex = Mutex.new
-
-    def self.valid_ips
-      @mutex.synchronize { @ips ||= load_ips }
-    end
-
-    def self.reload!
-      @mutex.synchronize { @ips = load_ips }
-    end
-
-    def self.load_ips
-      whois.map do |(family, records)|
-        ranges = records.map do |cidr|
-          range = IPAddr.new(cidr).to_range
-          (range.begin.to_i..range.end.to_i)
-        end
-        [family, IntervalTree::Tree.new(ranges)]
-      end.to_h
-    end
-
-    def self.whois
+    ip_ranges do
       client = Irrc::Client.new
       client.query :radb, AS
       results = client.perform
 
-      %i(ipv4 ipv6).map do |family|
-        [family, results[AS][family][AS]]
-      end.to_h
+      %i[ipv4 ipv6].map do |family|
+        results[AS][family][AS]
+      end.flatten
     end
   end
 
-  rule Legitbot::Facebook, %w(Facebot facebookexternalhit/1.1)
+  rule Legitbot::Facebook, %w[Facebot facebookexternalhit/1.1]
 end