Class: Blather::FileTransfer::Ibb

Inherits:
Object
  • Object
show all
Defined in:
lib/blather/file_transfer/ibb.rb

Overview

In-Band Bytestreams Transfer helper Takes care of accepting, declining and offering file transfers through the stream

Instance Method Summary collapse

Constructor Details

#initialize(stream, iq) ⇒ Ibb

Returns a new instance of Ibb.



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# File 'lib/blather/file_transfer/ibb.rb', line 8

def initialize(stream, iq)
  @stream = stream
  @iq = iq
  @seq = 0
end

Instance Method Details

#accept(handler, *params) ⇒ Object

Accept an incoming file-transfer

Parameters:

  • handler (module) —

    the handler for incoming data, see Blather::FileTransfer::SimpleFileReceiver for an example

  • params (Array) —

    the params to be passed into the handler



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# File 'lib/blather/file_transfer/ibb.rb', line 18

def accept(handler, *params)
  @io_read, @io_write = IO.pipe
  EM::attach @io_read, handler, *params

  @stream.register_handler :ibb_data, :from => @iq.from, :sid => @iq.sid do |iq|
    if iq.data['seq'] == @seq.to_s
      begin
        @io_write << Base64.decode64(iq.data.content)

        @stream.write iq.reply

        @seq += 1
        @seq = 0 if @seq > 65535
      rescue Errno::EPIPE => e
        @stream.write StanzaError.new(iq, 'not-acceptable', :cancel).to_node
      end
    else
      @stream.write StanzaError.new(iq, 'unexpected-request', :wait).to_node
    end
    true
  end

  @stream.register_handler :ibb_close, :from => @iq.from, :sid => @iq.sid do |iq|
    @stream.write iq.reply
    @stream.clear_handlers :ibb_data, :from => @iq.from, :sid => @iq.sid
    @stream.clear_handlers :ibb_close, :from => @iq.from, :sid => @iq.sid

    @io_write.close
    true
  end

  @stream.clear_handlers :ibb_open, :from => @iq.from
  @stream.clear_handlers :ibb_open, :from => @iq.from, :sid => @iq.sid
  @stream.write @iq.reply
end

#decline ⇒ Object

Decline an incoming file-transfer



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# File 'lib/blather/file_transfer/ibb.rb', line 55

def decline
  @stream.clear_handlers :ibb_open, :from => @iq.from
  @stream.clear_handlers :ibb_data, :from => @iq.from, :sid => @iq.sid
  @stream.clear_handlers :ibb_close, :from => @iq.from, :sid => @iq.sid
  @stream.write StanzaError.new(@iq, 'not-acceptable', :cancel).to_node
end

#offer ⇒ Object

Offer a file to somebody, not implemented yet



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# File 'lib/blather/file_transfer/ibb.rb', line 63

def offer
  # TODO: implement
end