Class: Cwmp::Handler

Inherits:
Object
  • Object
show all
Defined in:
lib/cwmp/acs.rb

Instance Method Summary collapse

Constructor Details

#initialize(obj) ⇒ Handler

Returns a new instance of Handler.



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# File 'lib/cwmp/acs.rb', line 29

def initialize obj
    @acs = obj
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/cwmp/acs.rb', line 33

def call(env)
    req = Rack::Request.new(env)
    len = req.content_length.to_i

    if len == 0
        message_type = ''
    else
        body = req.body.read
        doc = Nokogiri::XML(body)
        body =~ /(\w+):Envelope/
        soap_ns = $1
        message_type = doc.css("#{soap_ns}|Body")[0].element_children[0].name
    end

    if message_type == "Inform"
        manufacturer = doc.css("Manufacturer").text
        oui = doc.css("OUI").text
        serial_number = doc.css("SerialNumber").text
        event_codes = doc.css("EventCode").map { |n| n.text }
        parameters = {}
        doc.css("ParameterValueStruct").map { |it| parameters[it.element_children[0].text] = it.element_children[1].text }

        ck = Digest::MD5.hexdigest("#{serial_number}#{Time.new.to_i}")

        if !@acs.cpes.has_key? serial_number
            cpe = AcsCpe.new serial_number
            cpe.conn_req = parameters['InternetGatewayDevice.ManagementServer.ConnectionRequestURL']
            cpe.session_cookie = ck
            @acs.cpes[serial_number] = cpe
        end
        puts "got Inform from #{req.ip}:#{req.port} [sn #{serial_number}] with eventcodes #{event_codes.join(", ")}"

        inform_response = Cwmp::Message::inform_response
        response = Rack::Response.new inform_response, 200, {'Connection' => 'Keep-Alive', 'Server' => 'ruby-cwmp'}
        response.set_cookie("sessiontrack", {:value => ck, :path => "/", :expires => Time.now+24*60*60})
        response.finish
    elsif message_type == "TransferComplete"
        puts "got TransferComplete"
    else
        if len == 0
            puts "got Empty Post"
        else
            puts "got #{message_type}"
            case message_type
                when "GetParameterValuesResponse"
                    doc.css("ParameterValueStruct").each do |node|
                        puts "#{node.element_children[0].text}: #{node.element_children[1].text}"
                    end
                when "Fault"
                    puts "#{doc.css("faultstring").text}: #{doc.css("FaultString").text}"
            end
        end

        cookie = req.cookies['sessiontrack']
        @acs.cpes.each do |k,c|
            cpe = c if c.session_cookie = cookie
        end

        # Got Empty Post or a Response. Now check for any event to send, otherwise 204
        if cpe.queue.size > 0
            m = cpe.queue.pop
            response = Rack::Response.new m, 200, {'Connection' => 'Keep-Alive', 'Server' => 'ruby-cwmp'}
            response.finish
        else
            puts "sending 204"
            [204, {"Connection" => "Close", 'Server' => 'ruby-cwmp'}, ""]
        end

    end
end