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34 lines
1.6 KiB
Ruby
34 lines
1.6 KiB
Ruby
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# frozen_string_literal: true
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module PrivateAddressCheck
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module_function
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CIDR_LIST = [
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IPAddr.new('0.0.0.0/8'), # Current network (only valid as source address)
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IPAddr.new('100.64.0.0/10'), # Shared Address Space
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IPAddr.new('172.16.0.0/12'), # Private network
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IPAddr.new('192.0.0.0/24'), # IETF Protocol Assignments
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IPAddr.new('192.0.2.0/24'), # TEST-NET-1, documentation and examples
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IPAddr.new('192.88.99.0/24'), # IPv6 to IPv4 relay (includes 2002::/16)
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IPAddr.new('198.18.0.0/15'), # Network benchmark tests
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IPAddr.new('198.51.100.0/24'), # TEST-NET-2, documentation and examples
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IPAddr.new('203.0.113.0/24'), # TEST-NET-3, documentation and examples
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IPAddr.new('224.0.0.0/4'), # IP multicast (former Class D network)
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IPAddr.new('240.0.0.0/4'), # Reserved (former Class E network)
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IPAddr.new('255.255.255.255'), # Broadcast
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IPAddr.new('64:ff9b::/96'), # IPv4/IPv6 translation (RFC 6052)
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IPAddr.new('100::/64'), # Discard prefix (RFC 6666)
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IPAddr.new('2001::/32'), # Teredo tunneling
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IPAddr.new('2001:10::/28'), # Deprecated (previously ORCHID)
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IPAddr.new('2001:20::/28'), # ORCHIDv2
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IPAddr.new('2001:db8::/32'), # Addresses used in documentation and example source code
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IPAddr.new('2002::/16'), # 6to4
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IPAddr.new('fc00::/7'), # Unique local address
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IPAddr.new('ff00::/8'), # Multicast
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].freeze
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def private_address?(address)
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address.private? || address.loopback? || address.link_local? || CIDR_LIST.any? { |cidr| cidr.include?(address) }
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end
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end
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