jvazquez-r7
58 lines
1.6 KiB
Ruby
58 lines
1.6 KiB
Ruby
module Rex
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module Java
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module Serialization
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module Model
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# This class provides a Utf string representation
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class Utf < Element
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# @!attribute length
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# @return [Integer] the length of the string
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attr_accessor :length
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# @!attribute contents
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# @return [String] the contents of the string
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attr_accessor :contents
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# @param contents [String] the contents of the utf string
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def initialize(contents = '')
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self.contents = contents
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self.length = contents.length
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end
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# Deserializes a Java::Serialization::Model::Utf
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#
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# @param io [IO] the io to read from
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# @return [self] if deserialization succeeds
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# @raise [RuntimeError] if deserialization doesn't succeed
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def decode(io)
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raw_length = io.read(2)
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if raw_length.nil? || raw_length.length != 2
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raise ::RuntimeError, 'Failed to unserialize Utf'
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end
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self.length = raw_length.unpack('n')[0]
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if length == 0
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self.contents = ''
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else
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self.contents = io.read(length)
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if contents.nil? || contents.length != length
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raise ::RuntimeError, 'Failed to unserialize Utf'
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end
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end
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self
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end
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# Serializes the Java::Serialization::Model::Utf
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#
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# @return [String]
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def encode
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encoded = [length].pack('n')
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encoded << contents
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encoded
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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 |