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# -*- coding: binary -*-
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require "rex/text"
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module Rex
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module Proto
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module DCERPC
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class NDR
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  # Provide padding to align the string to the 32bit boundary
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  def self.align(string)
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    warn 'should be using Rex::Encoder::NDR'
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    return "\x00" * ((4 - (string.length & 3)) & 3)
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  end
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  # Encode a 4 byte long
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  # use to encode:
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  #       long element_1;
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  def self.long(string)
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    warn 'should be using Rex::Encoder::NDR'
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    return [string].pack('V')
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  end
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  # Encode a 2 byte short
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  # use to encode:
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  #       short element_1;
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  def self.short(string)
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    warn 'should be using Rex::Encoder::NDR'
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    return [string].pack('v')
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  end
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  # Encode a single byte
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  # use to encode:
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  #       byte element_1;
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  def self.byte(string)
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    warn 'should be using Rex::Encoder::NDR'
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    return [string].pack('C')
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  end
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  # Encode a byte array
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  # use to encode:
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  #       char  element_1
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  def self.UniConformantArray(string)
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    warn 'should be using Rex::Encoder::NDR'
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    return long(string.length) + string + align(string)
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  end
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  # Encode a string
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  # use to encode:
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  #       w_char *element_1;
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  def self.UnicodeConformantVaryingString(string)
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    warn 'should be using Rex::Encoder::NDR'
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    string += "\x00" # null pad
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    return long(string.length) + long(0) + long(string.length) + Rex::Text.to_unicode(string) + align(Rex::Text.to_unicode(string))
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  end
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  # Encode a string that is already unicode encoded
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  # use to encode:
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  #       w_char *element_1;
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  def self.UnicodeConformantVaryingStringPreBuilt(string)
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    warn 'should be using Rex::Encoder::NDR'
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    # if the string len is odd, thats bad!
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    if string.length % 2 > 0
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      string += "\x00"
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    end
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    len = string.length / 2;
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    return long(len) + long(0) + long(len) + string + align(string)
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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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