class/System.ServiceModel.Web/System.ServiceModel.Description/WebScriptEnablingBehavior.cs

   1 //
   2 // WebScriptEnablingBehavior.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto  <atsushi@ximian.com>
   6 //
   7 // Copyright (C) 2008 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28 using System;
  29 using System.ServiceModel;
  30 using System.ServiceModel.Channels;
  31 using System.ServiceModel.Dispatcher;
  32 using System.ServiceModel.Web;
  33 using System.Web.Script.Services;
  34
  35 namespace System.ServiceModel.Description
  36 {
  37         [ServiceContract (Namespace = "")]
  38         internal class InteropScriptService
  39         {
  40                 Type type;
  41                 string path;
  42                 bool debug;
  43
  44                 public InteropScriptService (Type type, string path, bool debug)
  45                 {
  46                         this.type = type;
  47                         this.path = path;
  48                         this.debug = debug;
  49                 }
  50
  51                 [WebGet (UriTemplate = "*")]
  52                 [OperationContract]
  53                 public string Get ()
  54                 {
  55                         return ProxyGenerator.GetClientProxyScript (type, path, debug);
  56                 }
  57         }
  58
  59         public sealed class WebScriptEnablingBehavior : WebHttpBehavior
  60         {
  61                 public WebScriptEnablingBehavior ()
  62                 {
  63                         DefaultBodyStyle = WebMessageBodyStyle.WrappedRequest;
  64                         DefaultOutgoingRequestFormat = WebMessageFormat.Json;
  65                         DefaultOutgoingResponseFormat = WebMessageFormat.Json;
  66                 }
  67
  68                 public override WebMessageBodyStyle DefaultBodyStyle { get; set; }
  69
  70                 public override WebMessageFormat DefaultOutgoingRequestFormat { get; set; }
  71
  72                 public override WebMessageFormat DefaultOutgoingResponseFormat { get; set; }
  73
  74                 [MonoTODO]
  75                 protected override void AddClientErrorInspector (ServiceEndpoint endpoint, ClientRuntime clientRuntime)
  76                 {
  77                         base.AddClientErrorInspector (endpoint, clientRuntime);
  78                 }
  79
  80                 [MonoTODO]
  81                 protected override void AddServerErrorHandlers (ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher)
  82                 {
  83                         base.AddServerErrorHandlers (endpoint, endpointDispatcher);
  84                 }
  85
  86                 [MonoTODO]
  87                 public override void ApplyClientBehavior (ServiceEndpoint endpoint, ClientRuntime clientRuntime)
  88                 {
  89                         base.ApplyClientBehavior (endpoint, clientRuntime);
  90                 }
  91
  92                 public override void ApplyDispatchBehavior (ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher)
  93                 {
  94                         base.ApplyDispatchBehavior (endpoint, endpointDispatcher);
  95
  96                         // doing similar to ServiceMetadataExtension
  97                         BuildScriptDispatcher (endpoint, endpointDispatcher, "js", false);
  98                         BuildScriptDispatcher (endpoint, endpointDispatcher, "jsdebug", true);
  99                 }
 100
 101                 void BuildScriptDispatcher (ServiceEndpoint endpoint, EndpointDispatcher ed, string subPath, bool debug)
 102                 {
 103                         var instance = new InteropScriptService (endpoint.Contract.ContractType, endpoint.Address.Uri.ToString (), debug);
 104
 105                         var cdOrg = ed.ChannelDispatcher;
 106                         var baseUriString = endpoint.ListenUri.ToString ();
 107                         var uri = new Uri (String.Concat (baseUriString, baseUriString [baseUriString.Length - 1] == '/' ? String.Empty : "/", subPath));
 108                         var listener = endpoint.Binding.BuildChannelListener<IReplyChannel> (uri);
 109                         var cd = new ChannelDispatcher (listener, String.Empty);
 110                         cd.MessageVersion = MessageVersion.None;
 111
 112                         cd.Endpoints.Add (new EndpointDispatcher (new EndpointAddress (uri), "InteropScriptService", String.Empty)
 113                                 { ContractFilter = new MatchAllMessageFilter () });
 114
 115                         var dr = cd.Endpoints [0].DispatchRuntime;
 116                         var dop = new DispatchOperation (dr, "Get", "*", "*");
 117                         dop.DeserializeRequest = false;
 118                         dop.SerializeReply = false;
 119                         dop.Invoker = new DummyInvoker (instance);
 120                         dr.UnhandledDispatchOperation = dop;
 121                         dr.InstanceContextProvider = new SingletonInstanceContextProvider (new InstanceContext (cdOrg.Host, instance));
 122
 123                         var host = ed.ChannelDispatcher.Host;
 124                         host.ChannelDispatchers.Add (cd);
 125                 }
 126
 127                 class DummyInvoker : IOperationInvoker
 128                 {
 129                         InteropScriptService instance;
 130
 131                         public DummyInvoker (InteropScriptService instance)
 132                         {
 133                                 this.instance = instance;
 134                         }
 135
 136                         public object [] AllocateInputs ()
 137                         {
 138                                 return new object [0];
 139                         }
 140
 141                         public object Invoke (object instance, object [] inputs, out object [] outputs)
 142                         {
 143                                 outputs = new object [0];
 144                                 var msg = Message.CreateMessage (MessageVersion.None, "*", (object) null);
 145                                 var hp = new HttpResponseMessageProperty ();
 146                                 hp.Headers ["Content-Type"] = "text/javascript";
 147                                 msg.Properties.Add (HttpResponseMessageProperty.Name, hp);
 148                                 msg.Properties.Add (WebMessageEncoder.ScriptPropertyName, this.instance.Get ());
 149                                 return msg;
 150                         }
 151
 152                         public IAsyncResult InvokeBegin (object instance, object[] inputs, AsyncCallback callback, object state)
 153                         {
 154                                 throw new NotSupportedException ();
 155                         }
 156
 157                         public object InvokeEnd (object instance, out object [] outputs, IAsyncResult result)
 158                         {
 159                                 throw new NotSupportedException ();
 160                         }
 161
 162                         public bool IsSynchronous {
 163                                 get { return true; }
 164                         }
 165                 }
 166
 167                 protected override QueryStringConverter GetQueryStringConverter (OperationDescription operationDescription)
 168                 {
 169                         return new JsonQueryStringConverter () { CustomWrapperName = "d"};
 170                 }
 171
 172                 [MonoTODO ("add non-XmlSerializer-ness check (but where?)")]
 173                 public override void Validate (ServiceEndpoint endpoint)
 174                 {
 175                         if (endpoint == null)
 176                                 throw new ArgumentNullException ("endpoint");
 177                         ValidateBinding (endpoint);
 178
 179                         foreach (var od in endpoint.Contract.Operations) {
 180                                 var wai = od.GetWebAttributeInfo ();
 181                                 if (wai.UriTemplate != null)
 182                                         throw new InvalidOperationException ("UriTemplate must not be used with WebScriptEnablingBehavior");
 183                                 var wia = od.Behaviors.Find<WebInvokeAttribute> ();
 184                                 if (wia != null) {
 185                                         switch (wia.Method.ToUpper ()) {
 186                                         case "GET":
 187                                         case "POST":
 188                                                 break;
 189                                         default:
 190                                                 throw new InvalidOperationException ("Only GET and POST HTTP methods are valid used for WebScriptEnablingBehavior");
 191                                         }
 192                                 }
 193
 194                                 var style = wai != null && wai.IsBodyStyleSetExplicitly ? wai.BodyStyle : DefaultBodyStyle;
 195                                 if (style != WebMessageBodyStyle.WrappedRequest)
 196                                         throw new NotSupportedException (String.Format ("WebScriptEnableBehavior only allows WrappedRequest body style, but operation '{0}' uses {1}.", od.Name, style));
 197                         }
 198                 }
 199         }
 200 }