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# -*- coding: binary -*-
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module Rex
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  module Proto
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    module Kerberos
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      module Model
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        # This class provides a representation of a principal, an asset (e.g., a
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        # workstation user or a network server) on a network.
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        class Element
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          include Rex::Proto::Kerberos::Crypto
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          include Rex::Proto::Kerberos::Model
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          def self.attr_accessor(*vars)
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            @attributes ||= []
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            @attributes.concat vars
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            super(*vars)
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          end
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          # Retrieves the element class fields
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          #
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          # @return [Array]
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          def self.attributes
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            @attributes
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          end
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          def self.decode(input)
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            elem = self.new
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            elem.decode(input)
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          end
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          def initialize(options = {})
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            raise ArgumentError, "Invalid options, expected hash, got #{options.class}" unless options.is_a?(Hash)
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            self.class.attributes.each do |attr|
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              if options.has_key?(attr)
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                m = (attr.to_s + '=').to_sym
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                self.send(m, options[attr])
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              end
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            end
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          end
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          # Retrieves the element instance fields
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          #
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          # @return [Array]
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          def attributes
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            self.class.attributes
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          end
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          # Decodes the Rex::Proto::Kerberos::Model::Element from the input. This
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          # method has been designed to be overridden by subclasses.
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          #
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          # @raise [NoMethodError]
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          def decode(input)
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            raise ::NoMethodError, 'Method designed to be overridden'
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          end
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          # Encodes the Rex::Proto::Kerberos::Model::Element into an ASN.1 String. This
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          # method has been designed to be overridden by subclasses.
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          #
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          # @raise [NoMethodError]
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          def encode
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            raise ::NoMethodError, 'Method designed to be overridden'
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          end
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        end
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      end
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    end
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  end
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end
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