66 lines
1.6 KiB
Ruby
66 lines
1.6 KiB
Ruby
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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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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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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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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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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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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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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# 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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