Contents

module FinTS
  class Message
    attr_accessor :msg_no
    attr_accessor :dialog_id
    attr_accessor :encrypted_segments

    def initialize(blz, username, pin, system_id, dialog_id, msg_no, encrypted_segments, tan_mechs=nil)
      @blz = blz
      @username = username
      @pin = pin
      @system_id = system_id
      @dialog_id = dialog_id
      @msg_no = msg_no
      @segments = []
      @encrypted_segments = []

      if tan_mechs && !tan_mechs.include?('999')
        @profile_version = 2
        @security_function = tan_mechs[0]
      else
        @profile_version = 1
        @security_function = '999'
      end

      sig_head = build_signature_head
      enc_head = build_encryption_head
      @segments << enc_head

      @enc_envelop = Segment::HNVSD.new(999, '')
      @segments << @enc_envelop

      append_enc_segment(sig_head)
      encrypted_segments.each do |segment|
        append_enc_segment(segment)
      end

      cur_count = encrypted_segments.length + 3

      sig_end = Segment::HNSHA.new(cur_count, @secref, @pin)
      append_enc_segment(sig_end)
      @segments << Segment::HNHBS.new(cur_count + 1, msg_no)
    end

    def append_enc_segment(seg)
      @encrypted_segments << seg
      @enc_envelop.set_data(@enc_envelop.encoded_data + seg.to_s)
    end

    def build_signature_head
      @secref = Kernel.rand(1000000..9999999)
      Segment::HNSHK.new(2, @secref, @blz, @username, @system_id, @profile_version, @security_function)
    end

    def build_encryption_head
      Segment::HNVSK.new(998, @blz, @username, @system_id, @profile_version)
    end

    def build_header
      length = @segments.map(&:to_s).inject(0) { |sum, segment| sum + segment.length }
      Segment::HNHBK.new(length, @dialog_id, @msg_no)
    end

    def to_s
      build_header.to_s + @segments.map(&:to_s).join('')
    end
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
ruby_fints-0.0.4	lib/fints/message.rb
ruby_fints-0.0.3	lib/fints/message.rb
ruby_fints-0.0.2	lib/fints/message.rb