Class: Oxd::OxdConnector

Inherits:
Object
  • Object
show all
Defined in:
lib/oxd/oxd_connector.rb

Overview

A class which takes care of the socket communication with oxD Server.

Direct Known Subclasses

ClientOxdCommands, UMACommands

Instance Method Summary collapse

Constructor Details

#initialize ⇒ OxdConnector

class constructor



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# File 'lib/oxd/oxd_connector.rb', line 15

def initialize
@command	    	
	@response_json
	@response_object
	@data = Hash.new
	@params = Hash.new
	@response_data = Hash.new
	@configuration = Oxd.config		    	
			logger(:log_msg => "Problem with json data : authorization_redirect_uri can't be blank") if @configuration.authorization_redirect_uri.empty?
			logger(:log_msg => "#{@configuration.oxd_host_ip} is not a valid IP address") if (IPAddr.new(@configuration.oxd_host_ip) rescue nil).nil?
			logger(:log_msg => "#{@configuration.oxd_host_port} is not a valid port for socket. Port must be integer and between from 0 to 65535") if (!@configuration.oxd_host_port.is_a?(Integer) || (@configuration.oxd_host_port < 0 && @configuration.oxd_host_port > 65535))	
end

Instance Method Details

#getData ⇒ Array

combines command and command parameters for socket request

Returns:

  • (Array) —

    @data



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# File 'lib/oxd/oxd_connector.rb', line 144

def getData
	@data = {'command' => @command, 'params' => @params}
   	return @data
end

#getData2 ⇒ Object 



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# File 'lib/oxd/oxd_connector.rb', line 149

def getData2
	@data = @params
   	return @data
end

#getResponseData ⇒ Mixed

extracts ‘data’ parameter from @response_object

Returns:

  • (Mixed) —

    @response_data



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# File 'lib/oxd/oxd_connector.rb', line 133

def getResponseData
	if (!@response_object)
        @response_data = 'Data is empty';
    else
        @response_data = @response_object['data']
    end
    return @response_data
end

#getResponseObject ⇒ Mixed

Returns @response_object set by request method.

Returns:

  • (Mixed) —

    @response_object set by request method



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# File 'lib/oxd/oxd_connector.rb', line 127

def getResponseObject
	return @response_object
end

#is_json?(string_to_validate) ⇒ Boolean

checks whether the passed string is in JSON format or not

Parameters:

  • string_to_validate (String)

Returns:

  • (Boolean) 


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# File 'lib/oxd/oxd_connector.rb', line 157

def is_json? (string_to_validate)
	begin
     !!JSON.parse(string_to_validate)
   rescue
     false
   end 			
end

#logger(args = {}) ⇒ Object

Logs server response and errors to log file

Parameters:

  • log_msg (Hash) —

    response to print in log file

  • error (Hash) —

    error message to print in log file

Raises:

  • RuntimeError



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# File 'lib/oxd/oxd_connector.rb', line 169

def logger(args={})
		# Initialize Log file
	# Location : app_root/log/oxd-ruby.log
	@logger ||= Logger.new("log/oxd-ruby.log")
	@logger.info(args[:log_msg])

	raise (args[:error] || args[:log_msg]) if args[:error] != ""
end

#oxd_http_request(requst, command = "") ⇒ Object

method to communicate with the oxD-to-http server

Parameters:

  • request (JSON) —

    representation of the JSON command string

  • char_count (Integer) —

    number of characters to read from response

Returns:

  • response from the oxD-to-http server



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# File 'lib/oxd/oxd_connector.rb', line 70

def oxd_http_request(requst, command = "")
	uri = URI.parse("https://127.0.0.1/"+command)
	http = Net::HTTP.new("127.0.0.1", 8443)
	http.use_ssl = true
	http.verify_mode = OpenSSL::SSL::VERIFY_NONE
	request = Net::HTTP::Post.new(uri.request_uri)
	request.add_field('Content-Type', 'application/json')
	request.body = requst
	response = http.request(request)
	response2 = response.body
	return response2
end

#oxd_socket_request(request, char_count = 8192) ⇒ Object

method to communicate with the oxD server

Parameters:

  • request (JSON) —

    representation of the JSON command string

  • char_count (Integer) (defaults to: 8192) —

    number of characters to read from response

Returns:

  • response from the oxD Server



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# File 'lib/oxd/oxd_connector.rb', line 40

def oxd_socket_request(request, char_count = 8192)
	host = @configuration.oxd_host_ip     # The web server
	port = @configuration.oxd_host_port   # Default HTTP port

	if(!socket = TCPSocket.new(host, port) )  # Connect to Oxd server
		logger(:log_msg => "Socket Error : Couldn't connect to socket ")
	else
		logger(:log_msg => "Client: socket::socket_connect connected : #{request}", :error => "")
	end
	
	socket.print(request)               # Send request
	response = socket.recv(char_count)  # Read response
	if(response)
		logger(:log_msg => "Client: oxd_socket_response: #{response}", :error => "")
       else
		logger(:log_msg => "Client: oxd_socket_response : Error socket reading process.")
       end
       # close connection
       if(socket.close)
       	logger(:log_msg => "Client: oxd_socket_connection : disconnected.", :error => "")
       end
       #logger(:log_msg => response)
	#abort
       return response
end

#request(comm = "") ⇒ JSON

method to send commands to the oxD server and oxd-to-http and to recieve the response via #oxd_socket_request

Parameters:

  • comm (String) (defaults to: "") —

    command string for oxd-to-http

Returns:

  • (JSON) —

    @response_object : response from the oxd server in JSON form



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# File 'lib/oxd/oxd_connector.rb', line 86

def request(comm = "")
			
	uri = URI.parse(@configuration.authorization_redirect_uri)	
			logger(:log_msg => "Please enable SSL on your website or check URIs in Oxd configuration.") if (uri.scheme != 'https')
	validate_command
	
	if(@configuration.oxd_host_port == 8099)
				jsondata = getData.to_json
				if(!is_json? (jsondata))
logger(:log_msg => "Sending parameters must be JSON. Exiting process.")
				end
				length = jsondata.length
				if( length <= 0 )
logger(:log_msg => "JSON data length must be more than zero. Exiting process.")
				else
length = length <= 999 ? sprintf('0%d', length) : length
				end
				@response_json = oxd_socket_request((length.to_s + jsondata).encode("UTF-8"))
				@response_json.sub!(@response_json[0..3], "")
    else
				jsondata = getData2.to_json
				@response_json = oxd_http_request(jsondata, comm)
    end


    if (@response_json)
        response = JSON.parse(@response_json)
        if (response['status'] == 'error') 
			logger(:log_msg => "OxD Server Error : #{response['data']['error_description']}")
        elsif (response['status'] == 'ok')

            @response_object = JSON.parse(@response_json)
        end
    else
    	logger(:log_msg => "Response is empty. Exiting process.")
    end
    
    return @response_object
end

#validate_command ⇒ Object

Checks the validity of command that is to be passed to oxd-server



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# File 'lib/oxd/oxd_connector.rb', line 29

def validate_command
	command_types = ['get_authorization_url','update_site_registration', 'get_tokens_by_code','get_user_info', 'register_site', 'get_logout_uri','get_authorization_code','uma_rs_protect','uma_rs_check_access','uma_rp_get_rpt','uma_rp_authorize_rpt','uma_rp_get_gat']
	if (!command_types.include?(@command))
				logger(:log_msg => "Command: #{@command} does not exist! Exiting process.")
   	end
end