Added IPv4#private?

2 files changed, 17 insertions, 1 deletions

diff --git a/lib/ipaddress/ipv4.rb b/lib/ipaddress/ipv4.rb
index 7db750c..3ef811a 100644
--- a/lib/ipaddress/ipv4.rb
+++ b/lib/ipaddress/ipv4.rb
@@ -539,6 +539,22 @@ module IPAddress;
     end
 
     #
+    # Checks if an IPv4 address objects belongs
+    # to a private network RFC1918
+    #
+    # Example:
+    #
+    #   ip = IPAddress "10.1.1.1/24"
+    #   ip.private?
+    #     #=> true
+    #
+    def private?
+      [self.class.new("10.0.0.0/8"),
+       self.class.new("172.16.0.0/12"),
+       self.class.new("192.168.0.0/16")].any? {|i| i.include? self}
+    end
+
+    #
     # Returns the IP address in in-addr.arpa format
     # for DNS lookups
     #
diff --git a/lib/ipaddress/prefix.rb b/lib/ipaddress/prefix.rb
index 2e915d8..c881811 100644
--- a/lib/ipaddress/prefix.rb
+++ b/lib/ipaddress/prefix.rb
@@ -244,7 +244,7 @@ module IPAddress
     #     #=> 340282366920938463444927863358058659840
     #
     def to_u128
-      eval "0b#{bits}.to_i"
+      bits.to_i(2)
     end
 
   end # class Prefix123 < Prefix