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Class: Win32::SSPI::SecurityBuffer

Relationships & Source Files
Inherits: Object
Defined in: ext/win32/lib/win32/sspi.rb

Overview

Creates binary representaiton of a SecBufferDesc structure, including the SecBuffer contained inside.

Constant Summary

Class Method Summary

Instance Method Summary

Constructor Details

.new(buffer = nil) ⇒ SecurityBuffer

[ GitHub ] 

  


# File 'ext/win32/lib/win32/sspi.rb', line 84



def initialize(buffer = nil)
	@buffer = buffer || "\0" * TOKENBUFSIZE
	@bufferSize = @buffer.length
	@type = SECBUFFER_TOKEN
end


  







Instance Method Details



  

    #bufferSize  
  

  [ GitHub ]


  

  


# File 'ext/win32/lib/win32/sspi.rb', line 90



def bufferSize
	unpack
	@bufferSize
end


  








  

    #bufferType  
  

  [ GitHub ]


  

  


# File 'ext/win32/lib/win32/sspi.rb', line 95



def bufferType
	unpack
	@type
end


  








  

    #to_p  
  

  [ GitHub ]


  

  


# File 'ext/win32/lib/win32/sspi.rb', line 105



def to_p
	# Assumption is that when to_p is called we are going to get a packed structure. Therefore,
	# set @unpacked back to nil so we know to unpack when accessors are next accessed.
	@unpacked = nil
	# Assignment of inner structure to variable is very important here. Without it,
	# will not be able to unpack changes to the structure. Alternative, nested unpacks,
	# does not work (i.e. @struct.unpack("LLP12")[2].unpack("LLP12") results in "no associated pointer")
	@sec_buffer ||= [@bufferSize, @type, @buffer].pack("LLP")
	@struct ||= [SECBUFFER_VERSION, 1, @sec_buffer].pack("LLP")
end


  








  

    #token  
  

  [ GitHub ]


  

  


# File 'ext/win32/lib/win32/sspi.rb', line 100



def token
	unpack
	@buffer
end


  








  

    #unpack   (private)
  



  

    

Unpacks the SecurityBufferDesc structure into member variables. We only want to do this once per struct, so the struct is deleted after unpacking.


  



  [ GitHub ]


  

  


# File 'ext/win32/lib/win32/sspi.rb', line 121



def unpack
	if ! @unpacked && @sec_buffer && @struct
		@bufferSize, @type = @sec_buffer.unpack("LL")
		@buffer = @sec_buffer.unpack("LLP#{@bufferSize}")[2]
		@struct = nil
		@sec_buffer = nil
		@unpacked = true
	end
end