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# -*- coding: binary -*-
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module Rex
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module Proto
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module DCERPC
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class Handle
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  @@protocols = ['ncacn_ip_tcp', 'ncacn_ip_udp', 'ncacn_np', 'ncacn_http']
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  attr_accessor :uuid, :protocol, :address, :options
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  # instantiate a handle object, akin to Microsoft's string binding handle by values
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  def initialize(uuid, protocol, address, options)
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    raise ArgumentError if !Rex::Proto
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    raise ArgumentError if !Rex::Proto::DCERPC::UUID.is?(uuid[0])
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    raise ArgumentError if !@@protocols.include?(protocol)
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    self.uuid = uuid
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    self.protocol = protocol
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    self.address = address
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    self.options = options
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  end
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  # instantiate a handle object, by parsing a string binding handle
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  def self.parse (handle)
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    uuid_re = '[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}'
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    rev_re = '\d+.\d+'
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    proto_re = '(?:' + @@protocols.join('|') + ')'
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    re = Regexp.new("(#{uuid_re}):(#{rev_re})\@(#{proto_re}):(.*?)\\[(.*)\\]$", Regexp::IGNORECASE | Regexp::NOENCODING)
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    match = re.match(handle)
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    raise ArgumentError if !match
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    uuid = [match[1], match[2]]
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    protocol = match[3]
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    address = match[4]
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    options = match[5].split(',')
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    i = Rex::Proto::DCERPC::Handle.new(uuid, protocol, address, options)
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    return i
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  end
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  # stringify a handle
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  def to_s
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    self.uuid.join(':') + '@' + self.protocol + ':' + self.address + '[' + self.options.join(', ') + ']'
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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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