Class: DeviseProxy::Proxy

Inherits:
Object
  • Object
show all
Defined in:
lib/devise-proxy/proxy.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Proxy

Returns a new instance of Proxy.



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# File 'lib/devise-proxy/proxy.rb', line 14

def initialize(options = {})
	opts = {
		'authentication' => {
			'hostname' => 'localhost',
			'port' => 3000},
		'forwarding' => {
			'hostname' => 'localhost',
			'port' => 3000}
		}.merge!(options)
	@host = opts['forwarding']['hostname']
	@port = opts['forwarding']['port']
	# puts "CREDS: #{opts['authentication']['hostname']}:#{opts['authentication']['port']}"
	@authenticator = DeviseProxy::Authenticator.new(opts['authentication']['hostname'], opts['authentication']['port'])
end

Instance Attribute Details

#authenticator ⇒ Object

Returns the value of attribute authenticator.



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# File 'lib/devise-proxy/proxy.rb', line 12

def authenticator
  @authenticator
end

#host ⇒ Object

Returns the value of attribute host.



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# File 'lib/devise-proxy/proxy.rb', line 10

def host
  @host
end

#port ⇒ Object

Returns the value of attribute port.



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# File 'lib/devise-proxy/proxy.rb', line 11

def port
  @port
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/devise-proxy/proxy.rb', line 29

def call(env)
	# puts req.to_yaml
	
	puts "User agent: #{env['HTTP_USER_AGENT']}"

	client_credential_b64 = env['HTTP_PROXY_AUTHORIZATION']
	# puts "B64: #{client_credential_b64}"
	
	if client_credential_b64 != nil and client_credential_b64 != ''
		# Decode the credentials:
		encoded = client_credential_b64.split[1]
		credentials = Base64.decode64(encoded).split(':', 2)
		email = credentials[0]
		password = credentials[1]
		
		#puts "Client password credentials email: #{email}, password, #{password}"

		result = [502, {'Content-Type' => 'text/plain'}, ["HTTP 502 - Ah crap! The authenticating proxy seems to be having issues. :-/"]]
		begin
			# Authenticate against the backend:
			auth =  @authenticator.authenticate(email, password)
			allowed = auth[0].to_s == '201'
			puts "Authenticated #{allowed ? 'approved.' : 'denied!'}\n\n"

			result = [403, auth[1], [auth[2]]]
			if allowed
          env['QUERY_STRING'] = [env['QUERY_STRING'], "auth_token=#{auth[3]}"].reject{|s| s.length < 1}.join('&')

          req = Rack::Request.new(env)
		    method = req.request_method.downcase
		    method[0..0] = method[0..0].upcase

		    sub_request = Net::HTTP.const_get(method).new("#{req.path}?#{req.query_string}")

		    if sub_request.request_body_permitted? and req.body
		      sub_request.body_stream = req.body
		      sub_request.content_length = req.content_length
		      sub_request.content_type = req.content_type
		    end

		    sub_request["X-Forwarded-For"] = (req.env["X-Forwarded-For"].to_s.split(/, +/) + [req.env['REMOTE_ADDR']]).join(", ")
		    sub_request["Accept-Encoding"] = req.accept_encoding
		    sub_request["Referer"] = req.referer

          all_cookies = auth[1]['set-cookie'].split(/;/)
          cookies_array = Array.new
          all_cookies.each { | cookie |
              cookies_array.push(cookie.split('; ')[0])
          }
          cookies = cookies_array.join('; ')

          sub_request["Cookie"] = cookies

		    sub_response = Net::HTTP.start(@host, @port) do |http|
		      http.request(sub_request)
		    end
				
		    headers = {}
		    sub_response.each_header do |k,v|
		      headers[k] = v unless k.to_s =~ /cookie|content-length|transfer-encoding|status/i
		    end

          body = sub_response.body
		    result = [sub_response.code.to_i, headers, [body]]
			end
		rescue Exception => e
        puts e.message
			# Probably an I/O issue connecting to the authentication service.
		end
		

	else
		# The client needs to retry, next time sending proxy credentials!
		headers = {}
    # sub_response.each_header do |k,v|
    #   headers[k] = v unless k.to_s =~ /cookie|content-length|transfer-encoding/i
    # end
		headers['Proxy-Authenticate'] = 'Basic realm="A valid account is required. Please use your registered email address as your username."'		
		headers['Content-Type']	= 'text/plain'
		headers['WWW-Authenticate'] = 'Basic realm="aousntoheunth"'
    # result = [407, headers, ["Email/Password required!"]]
    result = [401, headers, ["Email/Password required!"]]
	end
	

	result
end