зеркало из https://github.com/github/ruby.git
781 строка
22 KiB
Ruby
781 строка
22 KiB
Ruby
=begin
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= xmlrpc/server.rb
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Copyright (C) 2001, 2002, 2003, 2005 by Michael Neumann (mneumann@ntecs.de)
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Released under the same term of license as Ruby.
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= Classes
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* ((<XMLRPC::BasicServer>))
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* ((<XMLRPC::CGIServer>))
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* ((<XMLRPC::ModRubyServer>))
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* ((<XMLRPC::Server>))
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* ((<XMLRPC::WEBrickServlet>))
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= XMLRPC::BasicServer
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== Description
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Is the base class for all XML-RPC server-types (CGI, standalone).
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You can add handler and set a default handler.
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Do not use this server, as this is/should be an abstract class.
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=== How the method to call is found
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The arity (number of accepted arguments) of a handler (method or (({Proc})) object) is
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compared to the given arguments submitted by the client for a RPC ((-Remote Procedure Call-)).
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A handler is only called if it accepts the number of arguments, otherwise the search
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for another handler will go on. When at the end no handler was found,
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the ((<default_handler|XMLRPC::BasicServer#set_default_handler>)) will be called.
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With this technique it is possible to do overloading by number of parameters, but
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only for (({Proc})) handler, because you cannot define two methods of the same name in
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the same class.
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== Class Methods
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--- XMLRPC::BasicServer.new( class_delim="." )
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Creates a new (({XMLRPC::BasicServer})) instance, which should not be
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done, because (({XMLRPC::BasicServer})) is an abstract class. This
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method should be called from a subclass indirectly by a (({super})) call
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in the method (({initialize})). The paramter ((|class_delim|)) is used
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in ((<add_handler|XMLRPC::BasicServer#add_handler>)) when an object is
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added as handler, to delimit the object-prefix and the method-name.
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== Instance Methods
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--- XMLRPC::BasicServer#add_handler( name, signature=nil, help=nil ) { aBlock }
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Adds ((|aBlock|)) to the list of handlers, with ((|name|)) as the name of the method.
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Parameters ((|signature|)) and ((|help|)) are used by the Introspection method if specified,
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where ((|signature|)) is either an Array containing strings each representing a type of it's
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signature (the first is the return value) or an Array of Arrays if the method has multiple
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signatures. Value type-names are "int, boolean, double, string, dateTime.iso8601, base64, array, struct".
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Parameter ((|help|)) is a String with informations about how to call this method etc.
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A handler method or code-block can return the types listed at
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((<XMLRPC::Client#call|URL:client.html#index:0>)).
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When a method fails, it can tell it the client by throwing an
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(({XMLRPC::FaultException})) like in this example:
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s.add_handler("michael.div") do |a,b|
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if b == 0
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raise XMLRPC::FaultException.new(1, "division by zero")
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else
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a / b
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end
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end
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The client gets in the case of (({b==0})) an object back of type
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(({XMLRPC::FaultException})) that has a ((|faultCode|)) and ((|faultString|))
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field.
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--- XMLRPC::BasicServer#add_handler( prefix, obj )
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This is the second form of ((<add_handler|XMLRPC::BasicServer#add_handler>)).
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To add an object write:
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server.add_handler("michael", MyHandlerClass.new)
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All public methods of (({MyHandlerClass})) are accessible to
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the XML-RPC clients by (('michael."name of method"')). This is
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where the ((|class_delim|)) in ((<new|XMLRPC::BasicServer.new>))
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has it's role, a XML-RPC method-name is defined by
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((|prefix|)) + ((|class_delim|)) + (('"name of method"')).
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--- XMLRPC::BasicServer#add_handler( interface, obj )
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This is the third form of ((<add_handler|XMLRPC::BasicServer#add_handler>)).
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Use (({XMLRPC::interface})) to generate an ServiceInterface object, which
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represents an interface (with signature and help text) for a handler class.
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Parameter ((|interface|)) must be of type (({XMLRPC::ServiceInterface})).
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Adds all methods of ((|obj|)) which are defined in ((|interface|)) to the
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server.
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This is the recommended way of adding services to a server!
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--- XMLRPC::BasicServer#get_default_handler
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Returns the default-handler, which is called when no handler for
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a method-name is found.
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It is a (({Proc})) object or (({nil})).
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--- XMLRPC::BasicServer#set_default_handler ( &handler )
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Sets ((|handler|)) as the default-handler, which is called when
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no handler for a method-name is found. ((|handler|)) is a code-block.
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The default-handler is called with the (XML-RPC) method-name as first argument, and
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the other arguments are the parameters given by the client-call.
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If no block is specified the default of (({XMLRPC::BasicServer})) is used, which raises a
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XMLRPC::FaultException saying "method missing".
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--- XMLRPC::BasicServer#set_writer( writer )
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Sets the XML writer to use for generating XML output.
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Should be an instance of a class from module (({XMLRPC::XMLWriter})).
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If this method is not called, then (({XMLRPC::Config::DEFAULT_WRITER})) is used.
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--- XMLRPC::BasicServer#set_parser( parser )
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Sets the XML parser to use for parsing XML documents.
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Should be an instance of a class from module (({XMLRPC::XMLParser})).
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If this method is not called, then (({XMLRPC::Config::DEFAULT_PARSER})) is used.
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--- XMLRPC::BasicServer#add_introspection
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Adds the introspection handlers "system.listMethods", "system.methodSignature" and "system.methodHelp",
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where only the first one works.
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--- XMLRPC::BasicServer#add_multicall
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Adds the multi-call handler "system.multicall".
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--- XMLRPC::BasicServer#get_service_hook
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Returns the service-hook, which is called on each service request (RPC) unless it's (({nil})).
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--- XMLRPC::BasicServer#set_service_hook ( &handler )
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A service-hook is called for each service request (RPC).
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You can use a service-hook for example to wrap existing methods and catch exceptions of them or
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convert values to values recognized by XMLRPC. You can disable it by passing (({nil})) as parameter
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((|handler|)) .
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The service-hook is called with a (({Proc})) object and with the parameters for this (({Proc})).
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An example:
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server.set_service_hook {|obj, *args|
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begin
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ret = obj.call(*args) # call the original service-method
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# could convert the return value
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resuce
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# rescue exceptions
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end
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}
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=end
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require "xmlrpc/parser"
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require "xmlrpc/create"
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require "xmlrpc/config"
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require "xmlrpc/utils" # ParserWriterChooseMixin
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module XMLRPC
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class BasicServer
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include ParserWriterChooseMixin
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include ParseContentType
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ERR_METHOD_MISSING = 1
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ERR_UNCAUGHT_EXCEPTION = 2
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ERR_MC_WRONG_PARAM = 3
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ERR_MC_MISSING_PARAMS = 4
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ERR_MC_MISSING_METHNAME = 5
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ERR_MC_RECURSIVE_CALL = 6
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ERR_MC_WRONG_PARAM_PARAMS = 7
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ERR_MC_EXPECTED_STRUCT = 8
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def initialize(class_delim=".")
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@handler = []
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@default_handler = nil
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@service_hook = nil
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@class_delim = class_delim
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@create = nil
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@parser = nil
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add_multicall if Config::ENABLE_MULTICALL
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add_introspection if Config::ENABLE_INTROSPECTION
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end
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def add_handler(prefix, obj_or_signature=nil, help=nil, &block)
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if block_given?
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# proc-handler
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@handler << [prefix, block, obj_or_signature, help]
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else
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if prefix.kind_of? String
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# class-handler
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raise ArgumentError, "Expected non-nil value" if obj_or_signature.nil?
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@handler << [prefix + @class_delim, obj_or_signature]
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elsif prefix.kind_of? XMLRPC::Service::BasicInterface
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# class-handler with interface
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# add all methods
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@handler += prefix.get_methods(obj_or_signature, @class_delim)
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else
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raise ArgumentError, "Wrong type for parameter 'prefix'"
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end
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end
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self
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end
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def get_service_hook
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@service_hook
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end
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def set_service_hook(&handler)
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@service_hook = handler
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self
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end
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def get_default_handler
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@default_handler
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end
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def set_default_handler (&handler)
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@default_handler = handler
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self
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end
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def add_multicall
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add_handler("system.multicall", %w(array array), "Multicall Extension") do |arrStructs|
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unless arrStructs.is_a? Array
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raise XMLRPC::FaultException.new(ERR_MC_WRONG_PARAM, "system.multicall expects an array")
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end
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arrStructs.collect {|call|
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if call.is_a? Hash
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methodName = call["methodName"]
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params = call["params"]
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if params.nil?
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multicall_fault(ERR_MC_MISSING_PARAMS, "Missing params")
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elsif methodName.nil?
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multicall_fault(ERR_MC_MISSING_METHNAME, "Missing methodName")
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else
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if methodName == "system.multicall"
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multicall_fault(ERR_MC_RECURSIVE_CALL, "Recursive system.multicall forbidden")
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else
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unless params.is_a? Array
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multicall_fault(ERR_MC_WRONG_PARAM_PARAMS, "Parameter params have to be an Array")
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else
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ok, val = call_method(methodName, *params)
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if ok
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# correct return value
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[val]
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else
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# exception
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multicall_fault(val.faultCode, val.faultString)
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end
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end
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end
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end
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else
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multicall_fault(ERR_MC_EXPECTED_STRUCT, "system.multicall expected struct")
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end
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}
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end # end add_handler
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self
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end
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def add_introspection
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add_handler("system.listMethods",%w(array), "List methods available on this XML-RPC server") do
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methods = []
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@handler.each do |name, obj|
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if obj.kind_of? Proc
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methods << name
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else
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obj.methods.each {|meth| methods << name + meth}
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end
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end
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methods
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end
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add_handler("system.methodSignature", %w(array string), "Returns method signature") do |meth|
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sigs = []
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@handler.each do |name, obj, sig|
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if obj.kind_of? Proc and sig != nil and name == meth
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if sig[0].kind_of? Array
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# sig contains multiple signatures, e.g. [["array"], ["array", "string"]]
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sig.each {|s| sigs << s}
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else
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# sig is a single signature, e.g. ["array"]
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sigs << sig
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end
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end
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end
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sigs.uniq! || sigs # remove eventually duplicated signatures
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end
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add_handler("system.methodHelp", %w(string string), "Returns help on using this method") do |meth|
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help = nil
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@handler.each do |name, obj, sig, hlp|
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if obj.kind_of? Proc and name == meth
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help = hlp
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break
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end
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end
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help || ""
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end
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self
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end
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def process(data)
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method, params = parser().parseMethodCall(data)
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handle(method, *params)
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end
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private # --------------------------------------------------------------
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def multicall_fault(nr, str)
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{"faultCode" => nr, "faultString" => str}
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end
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#
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# method dispatch
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#
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def dispatch(methodname, *args)
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for name, obj in @handler
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if obj.kind_of? Proc
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next unless methodname == name
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else
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next unless methodname =~ /^#{name}(.+)$/
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next unless obj.respond_to? $1
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obj = obj.method($1)
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end
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if check_arity(obj, args.size)
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if @service_hook.nil?
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return obj.call(*args)
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else
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return @service_hook.call(obj, *args)
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end
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end
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end
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if @default_handler.nil?
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raise XMLRPC::FaultException.new(ERR_METHOD_MISSING, "Method #{methodname} missing or wrong number of parameters!")
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else
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@default_handler.call(methodname, *args)
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end
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end
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#
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# returns true, if the arity of "obj" matches
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#
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def check_arity(obj, n_args)
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ary = obj.arity
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if ary >= 0
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n_args == ary
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else
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n_args >= (ary+1).abs
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end
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end
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def call_method(methodname, *args)
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begin
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[true, dispatch(methodname, *args)]
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rescue XMLRPC::FaultException => e
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[false, e]
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rescue Exception => e
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[false, XMLRPC::FaultException.new(ERR_UNCAUGHT_EXCEPTION, "Uncaught exception #{e.message} in method #{methodname}")]
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end
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end
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#
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#
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#
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def handle(methodname, *args)
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create().methodResponse(*call_method(methodname, *args))
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end
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end
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=begin
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= XMLRPC::CGIServer
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== Synopsis
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require "xmlrpc/server"
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s = XMLRPC::CGIServer.new
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s.add_handler("michael.add") do |a,b|
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a + b
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end
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s.add_handler("michael.div") do |a,b|
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if b == 0
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raise XMLRPC::FaultException.new(1, "division by zero")
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else
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a / b
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end
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end
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s.set_default_handler do |name, *args|
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raise XMLRPC::FaultException.new(-99, "Method #{name} missing" +
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" or wrong number of parameters!")
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end
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s.serve
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== Description
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Implements a CGI-based XML-RPC server.
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== Superclass
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((<XMLRPC::BasicServer>))
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== Class Methods
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--- XMLRPC::CGIServer.new( *a )
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Creates a new (({XMLRPC::CGIServer})) instance. All parameters given
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are by-passed to ((<XMLRPC::BasicServer.new>)). You can only create
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((*one*)) (({XMLRPC::CGIServer})) instance, because more than one makes
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no sense.
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== Instance Methods
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--- XMLRPC::CGIServer#serve
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Call this after you have added all you handlers to the server.
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This method processes a XML-RPC methodCall and sends the answer
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back to the client.
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Make sure that you don't write to standard-output in a handler, or in
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any other part of your program, this would case a CGI-based server to fail!
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=end
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class CGIServer < BasicServer
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@@obj = nil
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def CGIServer.new(*a)
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@@obj = super(*a) if @@obj.nil?
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@@obj
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end
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def initialize(*a)
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super(*a)
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end
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def serve
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catch(:exit_serve) {
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length = ENV['CONTENT_LENGTH'].to_i
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http_error(405, "Method Not Allowed") unless ENV['REQUEST_METHOD'] == "POST"
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http_error(400, "Bad Request") unless parse_content_type(ENV['CONTENT_TYPE']).first == "text/xml"
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http_error(411, "Length Required") unless length > 0
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# TODO: do we need a call to binmode?
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$stdin.binmode if $stdin.respond_to? :binmode
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data = $stdin.read(length)
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http_error(400, "Bad Request") if data.nil? or data.size != length
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http_write(process(data), "Content-type" => "text/xml; charset=utf-8")
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}
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end
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private
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def http_error(status, message)
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err = "#{status} #{message}"
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msg = <<-"MSGEND"
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<html>
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<head>
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<title>#{err}</title>
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</head>
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<body>
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<h1>#{err}</h1>
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<p>Unexpected error occured while processing XML-RPC request!</p>
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</body>
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</html>
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MSGEND
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http_write(msg, "Status" => err, "Content-type" => "text/html")
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throw :exit_serve # exit from the #serve method
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end
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def http_write(body, header)
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h = {}
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header.each {|key, value| h[key.to_s.capitalize] = value}
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h['Status'] ||= "200 OK"
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h['Content-length'] ||= body.size.to_s
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str = ""
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h.each {|key, value| str << "#{key}: #{value}\r\n"}
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str << "\r\n#{body}"
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print str
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end
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end
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=begin
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= XMLRPC::ModRubyServer
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== Description
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Implements a XML-RPC server, which works with Apache mod_ruby.
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Use it in the same way as CGIServer!
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== Superclass
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((<XMLRPC::BasicServer>))
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=end
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class ModRubyServer < BasicServer
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def initialize(*a)
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@ap = Apache::request
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super(*a)
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end
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def serve
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catch(:exit_serve) {
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header = {}
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@ap.headers_in.each {|key, value| header[key.capitalize] = value}
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length = header['Content-length'].to_i
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http_error(405, "Method Not Allowed") unless @ap.request_method == "POST"
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http_error(400, "Bad Request") unless parse_content_type(header['Content-type']).first == "text/xml"
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http_error(411, "Length Required") unless length > 0
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# TODO: do we need a call to binmode?
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@ap.binmode
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data = @ap.read(length)
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http_error(400, "Bad Request") if data.nil? or data.size != length
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http_write(process(data), 200, "Content-type" => "text/xml; charset=utf-8")
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}
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end
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private
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def http_error(status, message)
|
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err = "#{status} #{message}"
|
|
msg = <<-"MSGEND"
|
|
<html>
|
|
<head>
|
|
<title>#{err}</title>
|
|
</head>
|
|
<body>
|
|
<h1>#{err}</h1>
|
|
<p>Unexpected error occured while processing XML-RPC request!</p>
|
|
</body>
|
|
</html>
|
|
MSGEND
|
|
|
|
http_write(msg, status, "Status" => err, "Content-type" => "text/html")
|
|
throw :exit_serve # exit from the #serve method
|
|
end
|
|
|
|
def http_write(body, status, header)
|
|
h = {}
|
|
header.each {|key, value| h[key.to_s.capitalize] = value}
|
|
h['Status'] ||= "200 OK"
|
|
h['Content-length'] ||= body.size.to_s
|
|
|
|
h.each {|key, value| @ap.headers_out[key] = value }
|
|
@ap.content_type = h["Content-type"]
|
|
@ap.status = status.to_i
|
|
@ap.send_http_header
|
|
|
|
@ap.print body
|
|
end
|
|
|
|
end
|
|
|
|
=begin
|
|
= XMLRPC::Server
|
|
== Synopsis
|
|
require "xmlrpc/server"
|
|
|
|
s = XMLRPC::Server.new(8080)
|
|
|
|
s.add_handler("michael.add") do |a,b|
|
|
a + b
|
|
end
|
|
|
|
s.add_handler("michael.div") do |a,b|
|
|
if b == 0
|
|
raise XMLRPC::FaultException.new(1, "division by zero")
|
|
else
|
|
a / b
|
|
end
|
|
end
|
|
|
|
s.set_default_handler do |name, *args|
|
|
raise XMLRPC::FaultException.new(-99, "Method #{name} missing" +
|
|
" or wrong number of parameters!")
|
|
end
|
|
|
|
s.serve
|
|
|
|
== Description
|
|
Implements a standalone XML-RPC server. The method (({serve}))) is left if a SIGHUP is sent to the
|
|
program.
|
|
|
|
== Superclass
|
|
((<XMLRPC::WEBrickServlet>))
|
|
|
|
== Class Methods
|
|
--- XMLRPC::Server.new( port=8080, host="127.0.0.1", maxConnections=4, stdlog=$stdout, audit=true, debug=true, *a )
|
|
Creates a new (({XMLRPC::Server})) instance, which is a XML-RPC server listening on
|
|
port ((|port|)) and accepts requests for the host ((|host|)), which is by default only the localhost.
|
|
The server is not started, to start it you have to call ((<serve|XMLRPC::Server#serve>)).
|
|
|
|
Parameters ((|audit|)) and ((|debug|)) are obsolete!
|
|
|
|
All additionally given parameters in ((|*a|)) are by-passed to ((<XMLRPC::BasicServer.new>)).
|
|
|
|
== Instance Methods
|
|
--- XMLRPC::Server#serve
|
|
Call this after you have added all you handlers to the server.
|
|
This method starts the server to listen for XML-RPC requests and answer them.
|
|
|
|
--- XMLRPC::Server#shutdown
|
|
Stops and shuts the server down.
|
|
|
|
=end
|
|
|
|
class WEBrickServlet < BasicServer; end # forward declaration
|
|
|
|
class Server < WEBrickServlet
|
|
|
|
def initialize(port=8080, host="127.0.0.1", maxConnections=4, stdlog=$stdout, audit=true, debug=true, *a)
|
|
super(*a)
|
|
require 'webrick'
|
|
@server = WEBrick::HTTPServer.new(:Port => port, :BindAddress => host, :MaxClients => maxConnections,
|
|
:Logger => WEBrick::Log.new(stdlog))
|
|
@server.mount("/", self)
|
|
end
|
|
|
|
def serve
|
|
if RUBY_PLATFORM =~ /mingw|mswin32/
|
|
signal = 1
|
|
else
|
|
signal = "HUP"
|
|
end
|
|
trap(signal) { @server.shutdown }
|
|
|
|
@server.start
|
|
end
|
|
|
|
def shutdown
|
|
@server.shutdown
|
|
end
|
|
|
|
end
|
|
|
|
=begin
|
|
= XMLRPC::WEBrickServlet
|
|
== Synopsis
|
|
|
|
require "webrick"
|
|
require "xmlrpc/server"
|
|
|
|
s = XMLRPC::WEBrickServlet.new
|
|
s.add_handler("michael.add") do |a,b|
|
|
a + b
|
|
end
|
|
|
|
s.add_handler("michael.div") do |a,b|
|
|
if b == 0
|
|
raise XMLRPC::FaultException.new(1, "division by zero")
|
|
else
|
|
a / b
|
|
end
|
|
end
|
|
|
|
s.set_default_handler do |name, *args|
|
|
raise XMLRPC::FaultException.new(-99, "Method #{name} missing" +
|
|
" or wrong number of parameters!")
|
|
end
|
|
|
|
httpserver = WEBrick::HTTPServer.new(:Port => 8080)
|
|
httpserver.mount("/RPC2", s)
|
|
trap("HUP") { httpserver.shutdown } # use 1 instead of "HUP" on Windows
|
|
httpserver.start
|
|
|
|
== Instance Methods
|
|
|
|
--- XMLRPC::WEBrickServlet#set_valid_ip( *ip_addr )
|
|
Specifies the valid IP addresses that are allowed to connect to the server.
|
|
Each IP is either a (({String})) or a (({Regexp})).
|
|
|
|
--- XMLRPC::WEBrickServlet#get_valid_ip
|
|
Return the via method ((<set_valid_ip|XMLRPC::Server#set_valid_ip>)) specified
|
|
valid IP addresses.
|
|
|
|
== Description
|
|
Implements a servlet for use with WEBrick, a pure Ruby (HTTP-) server framework.
|
|
|
|
== Superclass
|
|
((<XMLRPC::BasicServer>))
|
|
|
|
=end
|
|
|
|
class WEBrickServlet < BasicServer
|
|
def initialize(*a)
|
|
super
|
|
require "webrick/httpstatus"
|
|
@valid_ip = nil
|
|
end
|
|
|
|
# deprecated from WEBrick/1.2.2.
|
|
# but does not break anything.
|
|
def require_path_info?
|
|
false
|
|
end
|
|
|
|
def get_instance(config, *options)
|
|
# TODO: set config & options
|
|
self
|
|
end
|
|
|
|
def set_valid_ip(*ip_addr)
|
|
if ip_addr.size == 1 and ip_addr[0].nil?
|
|
@valid_ip = nil
|
|
else
|
|
@valid_ip = ip_addr
|
|
end
|
|
end
|
|
|
|
def get_valid_ip
|
|
@valid_ip
|
|
end
|
|
|
|
def service(request, response)
|
|
|
|
if @valid_ip
|
|
raise WEBrick::HTTPStatus::Forbidden unless @valid_ip.any? { |ip| request.peeraddr[3] =~ ip }
|
|
end
|
|
|
|
if request.request_method != "POST"
|
|
raise WEBrick::HTTPStatus::MethodNotAllowed,
|
|
"unsupported method `#{request.request_method}'."
|
|
end
|
|
|
|
if parse_content_type(request['Content-type']).first != "text/xml"
|
|
raise WEBrick::HTTPStatus::BadRequest
|
|
end
|
|
|
|
length = (request['Content-length'] || 0).to_i
|
|
|
|
raise WEBrick::HTTPStatus::LengthRequired unless length > 0
|
|
|
|
data = request.body
|
|
|
|
if data.nil? or data.size != length
|
|
raise WEBrick::HTTPStatus::BadRequest
|
|
end
|
|
|
|
resp = process(data)
|
|
if resp.nil? or resp.size <= 0
|
|
raise WEBrick::HTTPStatus::InternalServerError
|
|
end
|
|
|
|
response.status = 200
|
|
response['Content-Length'] = resp.size
|
|
response['Content-Type'] = "text/xml; charset=utf-8"
|
|
response.body = resp
|
|
end
|
|
end
|
|
|
|
|
|
end # module XMLRPC
|
|
|
|
|
|
=begin
|
|
= History
|
|
$Id$
|
|
=end
|
|
|