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require 'xmlrpc/parser'
require 'xmlrpc/create'
require 'xmlrpc/config'
require 'xmlrpc/utils'
require 'singleton'
module XMLRPC # :nodoc:
class XmlRpcHelper # :nodoc:
include Singleton
include ParserWriterChooseMixin
def parse_method_call(message)
parser().parseMethodCall(message)
end
def create_method_response(successful, return_value)
create().methodResponse(successful, return_value)
end
end
end
module ActionService # :nodoc:
module Protocol # :nodoc:
module XmlRpc # :nodoc:
def self.append_features(base) # :nodoc:
super
base.register_protocol(BodyOnly, XmlRpcProtocol)
end
class XmlRpcProtocol < AbstractProtocol # :nodoc:
def self.create_protocol_request(container_class, action_pack_request)
helper = XMLRPC::XmlRpcHelper.instance
service_name = action_pack_request.parameters['action']
methodname, params = helper.parse_method_call(action_pack_request.raw_post)
methodname.gsub!(/^[^\.]+\./, '') unless methodname =~ /^system\./ # XXX
protocol = XmlRpcProtocol.new(container_class)
content_type = action_pack_request.env['HTTP_CONTENT_TYPE']
content_type ||= 'text/xml'
request = ProtocolRequest.new(protocol,
action_pack_request.raw_post,
service_name.to_sym,
methodname,
content_type,
:xmlrpc_values => params)
request
rescue
nil
end
def self.create_protocol_client(api, protocol_name, endpoint_uri, options)
return nil unless protocol_name.to_s.downcase.to_sym == :xmlrpc
ActionService::Client::XmlRpc.new(api, endpoint_uri, options)
end
def initialize(container_class)
super(container_class)
container_class.write_inheritable_hash('default_system_methods', XmlRpcProtocol => method(:xmlrpc_default_system_handler))
end
def unmarshal_request(protocol_request)
values = protocol_request.options[:xmlrpc_values]
signature = protocol_request.signature
if signature
values = self.class.transform_incoming_method_params(self.class.transform_array_types(signature), values)
protocol_request.check_parameter_types(values, check_array_types(signature))
values
else
protocol_request.checked? ? [] : values
end
end
def marshal_response(protocol_request, return_value)
helper = XMLRPC::XmlRpcHelper.instance
signature = protocol_request.return_signature
if signature
protocol_request.check_parameter_types([return_value], check_array_types(signature))
return_value = self.class.transform_return_value(self.class.transform_array_types(signature), return_value)
raw_response = helper.create_method_response(true, return_value)
else
# XML-RPC doesn't have the concept of a void method, nor does it
# support a nil return value, so return true if we would have returned
# nil
if protocol_request.checked?
raw_response = helper.create_method_response(true, true)
else
return_value = true if return_value.nil?
raw_response = helper.create_method_response(true, return_value)
end
end
ProtocolResponse.new(self, raw_response, 'text/xml')
end
def marshal_exception(exception)
helper = XMLRPC::XmlRpcHelper.instance
exception = XMLRPC::FaultException.new(1, exception.message)
raw_response = helper.create_method_response(false, exception)
ProtocolResponse.new(self, raw_response, 'text/xml')
end
class << self
def transform_incoming_method_params(signature, params)
(1..signature.size).each do |i|
i -= 1
params[i] = xmlrpc_to_ruby(params[i], signature[i])
end
params
end
def transform_return_value(signature, return_value)
ruby_to_xmlrpc(return_value, signature[0])
end
def ruby_to_xmlrpc(param, param_class)
if param_class.is_a?(XmlRpcArray)
param.map{|p| ruby_to_xmlrpc(p, param_class.klass)}
elsif param_class.ancestors.include?(ActiveRecord::Base)
param.instance_variable_get('@attributes')
elsif param_class.ancestors.include?(ActionService::Struct)
struct = {}
param_class.members.each do |name, klass|
value = param.send(name)
next if value.nil?
struct[name.to_s] = value
end
struct
else
param
end
end
def xmlrpc_to_ruby(param, param_class)
if param_class.is_a?(XmlRpcArray)
param.map{|p| xmlrpc_to_ruby(p, param_class.klass)}
elsif param_class.ancestors.include?(ActiveRecord::Base)
raise(ProtocolError, "incoming ActiveRecord::Base types are not allowed")
elsif param_class.ancestors.include?(ActionService::Struct)
unless param.is_a?(Hash)
raise(ProtocolError, "expected parameter to be a Hash")
end
new_param = param_class.new
param_class.members.each do |name, klass|
new_param.send('%s=' % name.to_s, param[name.to_s])
end
new_param
else
param
end
end
def transform_array_types(signature)
signature.map{|x| x.is_a?(Array) ? XmlRpcArray.new(x[0]) : x}
end
end
private
def xmlrpc_default_system_handler(name, service_class, *args)
case name
when 'system.listMethods'
methods = []
api = service_class.web_service_api
api.api_methods.each do |name, info|
methods << api.public_api_method_name(name)
end
methods.sort
else
throw :try_default
end
end
def check_array_types(signature)
signature.map{|x| x.is_a?(Array) ? Array : x}
end
class XmlRpcArray
attr :klass
def initialize(klass)
@klass = klass
end
end
end
end
end
end
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