34 lines
		
	
	
		
			1021 B
		
	
	
	
		
			Ruby
		
	
	
	
			
		
		
	
	
			34 lines
		
	
	
		
			1021 B
		
	
	
	
		
			Ruby
		
	
	
	
# frozen_string_literal: true
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module Gitlab
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  module Database
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    # Class for casting binary data to hexadecimal SHA256 hashes (and vice-versa).
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    #
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    # Using Sha256Attribute allows you to store SHA256 values as binary while still
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    # using them as if they were stored as string values. This gives you the
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    # ease of use of string values, but without the storage overhead.
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    class Sha256Attribute < ActiveRecord::ConnectionAdapters::PostgreSQL::OID::Bytea
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      # Casts binary data to a SHA256 and remove trailing = and newline from encode64
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      def deserialize(value)
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        value = super(value)
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        if value.present?
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          Base64.encode64(value).delete("=").chomp("\n")
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        else
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          nil
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        end
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      end
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      # Casts a SHA256 in a proper binary format. which is 32 bytes long
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      def serialize(value)
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        arg = if value.present?
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                Base64.decode64(value)
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              else
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                nil
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              end
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        super(arg)
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      end
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    end
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  end
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end
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