add tag v2_2_9

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v2_2_9@61257 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 707 insertions, 0 deletions

diff --git a/ruby_2_2/lib/xmlrpc/server.rb b/ruby_2_2/lib/xmlrpc/server.rb
new file mode 100644
index 0000000000..64856ea1fa
--- /dev/null
+++ b/ruby_2_2/lib/xmlrpc/server.rb
@@ -0,0 +1,707 @@
+# xmlrpc/server.rb
+# Copyright (C) 2001, 2002, 2003, 2005 by Michael Neumann (mneumann@ntecs.de)
+#
+# Released under the same term of license as Ruby.
+
+require "xmlrpc/parser"
+require "xmlrpc/create"
+require "xmlrpc/config"
+require "xmlrpc/utils"         # ParserWriterChooseMixin
+
+
+
+module XMLRPC # :nodoc:
+
+
+# This is the base class for all XML-RPC server-types (CGI, standalone).
+# You can add handler and set a default handler.
+# Do not use this server, as this is/should be an abstract class.
+#
+# === How the method to call is found
+# The arity (number of accepted arguments) of a handler (method or Proc
+# object) is compared to the given arguments submitted by the client for a
+# RPC, or Remote Procedure Call.
+#
+# A handler is only called if it accepts the number of arguments, otherwise
+# the search for another handler will go on. When at the end no handler was
+# found, the default_handler, XMLRPC::BasicServer#set_default_handler will be
+# called.
+#
+# With this technique it is possible to do overloading by number of parameters, but
+# only for Proc handler, because you cannot define two methods of the same name in
+# the same class.
+class BasicServer
+
+  include ParserWriterChooseMixin
+  include ParseContentType
+
+  ERR_METHOD_MISSING        = 1
+  ERR_UNCAUGHT_EXCEPTION    = 2
+  ERR_MC_WRONG_PARAM        = 3
+  ERR_MC_MISSING_PARAMS     = 4
+  ERR_MC_MISSING_METHNAME   = 5
+  ERR_MC_RECURSIVE_CALL     = 6
+  ERR_MC_WRONG_PARAM_PARAMS = 7
+  ERR_MC_EXPECTED_STRUCT    = 8
+
+
+  # Creates a new XMLRPC::BasicServer instance, which should not be
+  # done, because XMLRPC::BasicServer is an abstract class. This
+  # method should be called from a subclass indirectly by a +super+ call
+  # in the initialize method.
+  #
+  # The parameter +class_delim+ is used by add_handler, see
+  # XMLRPC::BasicServer#add_handler, when an object is added as a handler, to
+  # delimit the object-prefix and the method-name.
+  def initialize(class_delim=".")
+    @handler = []
+    @default_handler = nil
+    @service_hook = nil
+
+    @class_delim = class_delim
+    @create = nil
+    @parser = nil
+
+    add_multicall     if Config::ENABLE_MULTICALL
+    add_introspection if Config::ENABLE_INTROSPECTION
+  end
+
+  # Adds +aBlock+ to the list of handlers, with +name+ as the name of
+  # the method.
+  #
+  # Parameters +signature+ and +help+ are used by the Introspection method if
+  # specified, where +signature+ is either an Array containing strings each
+  # representing a type of it's signature (the first is the return value) or
+  # an Array of Arrays if the method has multiple signatures.
+  #
+  # Value type-names are "int, boolean, double, string, dateTime.iso8601,
+  # base64, array, struct".
+  #
+  # Parameter +help+ is a String with information about how to call this method etc.
+  #
+  # When a method fails, it can tell the client by throwing an
+  # XMLRPC::FaultException like in this example:
+  #
+  #     s.add_handler("michael.div") do |a,b|
+  #       if b == 0
+  #         raise XMLRPC::FaultException.new(1, "division by zero")
+  #       else
+  #         a / b
+  #       end
+  #     end
+  #
+  # In the case of <code>b==0</code> the client gets an object back of type
+  # XMLRPC::FaultException that has a +faultCode+ and +faultString+ field.
+  #
+  # This is the second form of ((<add_handler|XMLRPC::BasicServer#add_handler>)).
+  # To add an object write:
+  #
+  #     server.add_handler("michael", MyHandlerClass.new)
+  #
+  # All public methods of MyHandlerClass are accessible to
+  # the XML-RPC clients by <code>michael."name of method"</code>. This is
+  # where the +class_delim+ in XMLRPC::BasicServer.new plays it's role, a
+  # XML-RPC method-name is defined by +prefix+ + +class_delim+ + <code>"name
+  # of method"</code>.
+  #
+  # The third form of +add_handler is to use XMLRPC::Service::Interface to
+  # generate an object, which represents an interface (with signature and
+  # help text) for a handler class.
+  #
+  # The +interface+ parameter must be an instance of XMLRPC::Service::Interface.
+  # Adds all methods of +obj+ which are defined in the +interface+ to the server.
+  #
+  # This is the recommended way of adding services to a server!
+  def add_handler(prefix, obj_or_signature=nil, help=nil, &block)
+    if block_given?
+      # proc-handler
+      @handler << [prefix, block, obj_or_signature, help]
+    else
+      if prefix.kind_of? String
+        # class-handler
+        raise ArgumentError, "Expected non-nil value" if obj_or_signature.nil?
+        @handler << [prefix + @class_delim, obj_or_signature]
+      elsif prefix.kind_of? XMLRPC::Service::BasicInterface
+        # class-handler with interface
+        # add all methods
+        @handler += prefix.get_methods(obj_or_signature, @class_delim)
+      else
+        raise ArgumentError, "Wrong type for parameter 'prefix'"
+      end
+    end
+    self
+  end
+
+  # Returns the service-hook, which is called on each service request (RPC)
+  # unless it's +nil+.
+  def get_service_hook
+    @service_hook
+  end
+
+  # A service-hook is called for each service request (RPC).
+  #
+  # You can use a service-hook for example to wrap existing methods and catch
+  # exceptions of them or convert values to values recognized by XMLRPC.
+  #
+  # You can disable it by passing +nil+ as the +handler+ parameter.
+  #
+  # The service-hook is called with a Proc object along with any parameters.
+  #
+  # An example:
+  #
+  #    server.set_service_hook {|obj, *args|
+  #      begin
+  #        ret = obj.call(*args)  # call the original service-method
+  #        # could convert the return value
+  #      rescue
+  #        # rescue exceptions
+  #      end
+  #    }
+  #
+  def set_service_hook(&handler)
+    @service_hook = handler
+    self
+  end
+
+  # Returns the default-handler, which is called when no handler for
+  # a method-name is found.
+  #
+  # It is either a Proc object or +nil+.
+  def get_default_handler
+    @default_handler
+  end
+
+  # Sets +handler+ as the default-handler, which is called when
+  # no handler for a method-name is found.
+  #
+  # +handler+ is a code-block.
+  #
+  # The default-handler is called with the (XML-RPC) method-name as first
+  # argument, and the other arguments are the parameters given by the
+  # client-call.
+  #
+  # If no block is specified the default of XMLRPC::BasicServer is
+  # used, which raises a XMLRPC::FaultException saying "method missing".
+  def set_default_handler(&handler)
+    @default_handler = handler
+    self
+  end
+
+  # Adds the multi-call handler <code>"system.multicall"</code>.
+  def add_multicall
+    add_handler("system.multicall", %w(array array), "Multicall Extension") do |arrStructs|
+      unless arrStructs.is_a? Array
+        raise XMLRPC::FaultException.new(ERR_MC_WRONG_PARAM, "system.multicall expects an array")
+      end
+
+      arrStructs.collect {|call|
+        if call.is_a? Hash
+          methodName = call["methodName"]
+          params     = call["params"]
+
+          if params.nil?
+            multicall_fault(ERR_MC_MISSING_PARAMS, "Missing params")
+          elsif methodName.nil?
+            multicall_fault(ERR_MC_MISSING_METHNAME, "Missing methodName")
+          else
+            if methodName == "system.multicall"
+              multicall_fault(ERR_MC_RECURSIVE_CALL, "Recursive system.multicall forbidden")
+            else
+              unless params.is_a? Array
+                multicall_fault(ERR_MC_WRONG_PARAM_PARAMS, "Parameter params have to be an Array")
+              else
+                ok, val = call_method(methodName, *params)
+                if ok
+                  # correct return value
+                  [val]
+                else
+                  # exception
+                  multicall_fault(val.faultCode, val.faultString)
+                end
+              end
+            end
+          end
+
+        else
+          multicall_fault(ERR_MC_EXPECTED_STRUCT, "system.multicall expected struct")
+        end
+      }
+    end # end add_handler
+    self
+  end
+
+  # Adds the introspection handlers <code>"system.listMethods"</code>,
+  # <code>"system.methodSignature"</code> and
+  # <code>"system.methodHelp"</code>, where only the first one works.
+  def add_introspection
+    add_handler("system.listMethods",%w(array), "List methods available on this XML-RPC server") do
+      methods = []
+      @handler.each do |name, obj|
+        if obj.kind_of? Proc
+          methods << name
+        else
+          obj.class.public_instance_methods(false).each do |meth|
+            methods << "#{name}#{meth}"
+          end
+        end
+      end
+      methods
+    end
+
+    add_handler("system.methodSignature", %w(array string), "Returns method signature") do |meth|
+      sigs = []
+      @handler.each do |name, obj, sig|
+        if obj.kind_of? Proc and sig != nil and name == meth
+          if sig[0].kind_of? Array
+            # sig contains multiple signatures, e.g. [["array"], ["array", "string"]]
+            sig.each {|s| sigs << s}
+          else
+            # sig is a single signature, e.g. ["array"]
+            sigs << sig
+          end
+        end
+      end
+      sigs.uniq! || sigs  # remove eventually duplicated signatures
+    end
+
+    add_handler("system.methodHelp", %w(string string), "Returns help on using this method") do |meth|
+      help = nil
+      @handler.each do |name, obj, sig, hlp|
+        if obj.kind_of? Proc and name == meth
+          help = hlp
+          break
+        end
+      end
+      help || ""
+    end
+
+    self
+  end
+
+
+
+  def process(data)
+    method, params = parser().parseMethodCall(data)
+    handle(method, *params)
+  end
+
+  private
+
+  def multicall_fault(nr, str)
+    {"faultCode" => nr, "faultString" => str}
+  end
+
+  def dispatch(methodname, *args)
+    for name, obj in @handler
+      if obj.kind_of? Proc
+        next unless methodname == name
+      else
+        next unless methodname =~ /^#{name}(.+)$/
+        next unless obj.respond_to? $1
+        obj = obj.method($1)
+      end
+
+      if check_arity(obj, args.size)
+        if @service_hook.nil?
+          return obj.call(*args)
+        else
+          return @service_hook.call(obj, *args)
+        end
+      end
+    end
+
+    if @default_handler.nil?
+      raise XMLRPC::FaultException.new(ERR_METHOD_MISSING, "Method #{methodname} missing or wrong number of parameters!")
+    else
+      @default_handler.call(methodname, *args)
+    end
+  end
+
+
+  # Returns +true+, if the arity of +obj+ matches +n_args+
+  def check_arity(obj, n_args)
+    ary = obj.arity
+
+    if ary >= 0
+      n_args == ary
+    else
+      n_args >= (ary+1).abs
+    end
+  end
+
+
+
+  def call_method(methodname, *args)
+    begin
+      [true, dispatch(methodname, *args)]
+    rescue XMLRPC::FaultException => e
+      [false, e]
+    rescue Exception => e
+      [false, XMLRPC::FaultException.new(ERR_UNCAUGHT_EXCEPTION, "Uncaught exception #{e.message} in method #{methodname}")]
+    end
+  end
+
+  def handle(methodname, *args)
+    create().methodResponse(*call_method(methodname, *args))
+  end
+
+
+end
+
+
+# Implements a CGI-based XML-RPC server.
+#
+#     require "xmlrpc/server"
+#
+#     s = XMLRPC::CGIServer.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
+#
+#     s.serve
+#
+#
+# <b>Note:</b> Make sure that you don't write to standard-output in a
+# handler, or in any other part of your program, this would cause a CGI-based
+# server to fail!
+class CGIServer < BasicServer
+  @@obj = nil
+
+  # Creates a new XMLRPC::CGIServer instance.
+  #
+  # All parameters given are by-passed to XMLRPC::BasicServer.new.
+  #
+  # You can only create <b>one</b> XMLRPC::CGIServer instance, because more
+  # than one makes no sense.
+  def CGIServer.new(*a)
+    @@obj = super(*a) if @@obj.nil?
+    @@obj
+  end
+
+  def initialize(*a)
+    super(*a)
+  end
+
+  # Call this after you have added all you handlers to the server.
+  #
+  # This method processes a XML-RPC method call and sends the answer
+  # back to the client.
+  def serve
+    catch(:exit_serve) {
+      length = ENV['CONTENT_LENGTH'].to_i
+
+      http_error(405, "Method Not Allowed") unless ENV['REQUEST_METHOD'] == "POST"
+      http_error(400, "Bad Request")        unless parse_content_type(ENV['CONTENT_TYPE']).first == "text/xml"
+      http_error(411, "Length Required")    unless length > 0
+
+      # TODO: do we need a call to binmode?
+      $stdin.binmode if $stdin.respond_to? :binmode
+      data = $stdin.read(length)
+
+      http_error(400, "Bad Request")        if data.nil? or data.bytesize != length
+
+      http_write(process(data), "Content-type" => "text/xml; charset=utf-8")
+    }
+  end
+
+
+  private
+
+  def http_error(status, message)
+    err = "#{status} #{message}"
+    msg = <<-"MSGEND"
+      <html>
+        <head>
+          <title>#{err}</title>
+        </head>
+        <body>
+          <h1>#{err}</h1>
+          <p>Unexpected error occurred while processing XML-RPC request!</p>
+        </body>
+      </html>
+    MSGEND
+
+    http_write(msg, "Status" => err, "Content-type" => "text/html")
+    throw :exit_serve # exit from the #serve method
+  end
+
+  def http_write(body, header)
+    h = {}
+    header.each {|key, value| h[key.to_s.capitalize] = value}
+    h['Status']         ||= "200 OK"
+    h['Content-length'] ||= body.bytesize.to_s
+
+    str = ""
+    h.each {|key, value| str << "#{key}: #{value}\r\n"}
+    str << "\r\n#{body}"
+
+    print str
+  end
+
+end
+
+
+# Implements a XML-RPC server, which works with Apache mod_ruby.
+#
+# Use it in the same way as XMLRPC::CGIServer!
+class ModRubyServer < BasicServer
+
+  # Creates a new XMLRPC::ModRubyServer instance.
+  #
+  # All parameters given are by-passed to XMLRPC::BasicServer.new.
+  def initialize(*a)
+    @ap = Apache::request
+    super(*a)
+  end
+
+  # Call this after you have added all you handlers to the server.
+  #
+  # This method processes a XML-RPC method call and sends the answer
+  # back to the client.
+  def serve
+    catch(:exit_serve) {
+      header = {}
+      @ap.headers_in.each {|key, value| header[key.capitalize] = value}
+
+      length = header['Content-length'].to_i
+
+      http_error(405, "Method Not Allowed") unless @ap.request_method  == "POST"
+      http_error(400, "Bad Request")        unless parse_content_type(header['Content-type']).first == "text/xml"
+      http_error(411, "Length Required")    unless length > 0
+
+      # TODO: do we need a call to binmode?
+      @ap.binmode
+      data = @ap.read(length)
+
+      http_error(400, "Bad Request")        if data.nil? or data.bytesize != length
+
+      http_write(process(data), 200, "Content-type" => "text/xml; charset=utf-8")
+    }
+  end
+
+
+  private
+
+  def http_error(status, message)
+    err = "#{status} #{message}"
+    msg = <<-"MSGEND"
+      <html>
+        <head>
+          <title>#{err}</title>
+        </head>
+        <body>
+          <h1>#{err}</h1>
+          <p>Unexpected error occurred 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.bytesize.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
+
+
+class WEBrickServlet < BasicServer; end # forward declaration
+
+# Implements a standalone XML-RPC server. The method XMLRPC::Server#serve is
+# left if a SIGHUP is sent to the program.
+#
+#    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
+class Server < WEBrickServlet
+
+  # Creates a new XMLRPC::Server instance, which is a XML-RPC server
+  # listening on the given +port+ and accepts requests for the given +host+,
+  # which is +localhost+ by default.
+  #
+  # The server is not started, to start it you have to call
+  # XMLRPC::Server#serve.
+  #
+  # The optional +audit+ and +debug+ parameters are obsolete!
+  #
+  # All additionally provided parameters in <code>*a</code> are by-passed to
+  # XMLRPC::BasicServer.new.
+  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
+
+  # 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.
+  def serve
+    signals = %w[INT TERM HUP] & Signal.list.keys
+    signals.each { |signal| trap(signal) { @server.shutdown } }
+
+    @server.start
+  end
+
+  # Stops and shuts the server down.
+  def shutdown
+    @server.shutdown
+  end
+
+end
+
+
+# Implements a servlet for use with WEBrick, a pure Ruby (HTTP) server
+# framework.
+#
+#     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
+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
+
+  # Specifies the valid IP addresses that are allowed to connect to the server.
+  #
+  # Each IP is either a String or a Regexp.
+  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
+
+  # Return the valid IP addresses that are allowed to connect to the server.
+  #
+  # See also, XMLRPC::Server#set_valid_ip
+  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.bytesize != length
+      raise WEBrick::HTTPStatus::BadRequest
+    end
+
+    resp = process(data)
+    if resp.nil? or resp.bytesize <= 0
+      raise WEBrick::HTTPStatus::InternalServerError
+    end
+
+    response.status = 200
+    response['Content-Length'] = resp.bytesize
+    response['Content-Type']   = "text/xml; charset=utf-8"
+    response.body = resp
+  end
+end
+
+
+end # module XMLRPC
+
+
+=begin
+= History
+    $Id$
+=end
+