Method: Rex::Post::Meterpreter::Channel#_write

Defined in:
lib/rex/post/meterpreter/channel.rb

#_write(buf, length = nil, addends = nil) ⇒ Object

Writes data to the remote half of the channel.



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# File 'lib/rex/post/meterpreter/channel.rb', line 216

def _write(buf, length = nil, addends = nil)

  if (self.cid == nil)
    raise IOError, "Channel has been closed.", caller
  end

  request = Packet.create_request('core_channel_write')

  # Truncation and celebration
  if ((length != nil) &&
      (buf.length >= length))
    buf = buf[0..length]
  else
    length = buf.length
  end

  # Populate the request
  request.add_tlv(TLV_TYPE_CHANNEL_ID, self.cid)

  cdata = request.add_tlv(TLV_TYPE_CHANNEL_DATA, buf)
  if( ( self.flags & CHANNEL_FLAG_COMPRESS ) == CHANNEL_FLAG_COMPRESS )
    cdata.compress = true
  end

  request.add_tlv(TLV_TYPE_LENGTH, length)
  request.add_tlvs(addends)

  response = self.client.send_request(request)
  written  = response.get_tlv(TLV_TYPE_LENGTH)

  return (written == nil) ? 0 : written.value
end