2005-01-31 Zoltan Varga <vargaz@freemail.hu>
[mono.git] / mcs / class / corlib / System.Runtime.Remoting / ObjRef.cs
index 0d511c889beb3963ce30cb0e2e987a29c4e89981..30234367827314cbfaa1b837eebdc0ec1ef83232 100644 (file)
 //
 // Author:
 //   Miguel de Icaza (miguel@ximian.com)
+//   Dietmar Maurer (dietmar@ximian.com)
+//   Lluis Sanchez Gual (lluis@ideary.com)
+//   Patrik Torstensson
 //
 // (C) Ximian, Inc.  http://www.ximian.com
 //
+
+//
+// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
 //
-// FIXME: This is just a skeleton for practical purposes.
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //
 
 using System;
+using System.Runtime.Serialization;
+using System.Runtime.Remoting.Channels;
+using System.Runtime.Remoting.Messaging;
+using System.Runtime.Remoting.Proxies;
 
 namespace System.Runtime.Remoting {
 
-       public class ObjRef : IObjectReference, ISerializable {
-               MarshalByRefObject mbr;
-               SerializationInfo si;
-               Type type;
+       [Serializable]
+       public class ObjRef : IObjectReference, ISerializable 
+       {
+               IChannelInfo channel_info;
+               string uri;
+               IRemotingTypeInfo typeInfo;
+               IEnvoyInfo envoyInfo;
+               int flags;
+               Type _serverType;
+
+               static int MarshalledObjectRef = 1;
+               static int WellKnowObjectRef = 2;
                
                public ObjRef ()
                {
+                       // no idea why this needs to be public
+
+                       UpdateChannelInfo();
                }
-               
+
+               internal ObjRef (string typeName, string uri, IChannelInfo cinfo) 
+               {
+                       this.uri = uri;
+                       channel_info = cinfo;
+                       typeInfo = new TypeInfo (Type.GetType (typeName));
+               }
+
+               internal ObjRef (ObjRef o, bool unmarshalAsProxy) {
+                       channel_info = o.channel_info;
+                       uri = o.uri;
+       
+                       typeInfo = o.typeInfo;
+                       envoyInfo = o.envoyInfo;
+                       flags = o.flags;
+                       if (unmarshalAsProxy) flags |= MarshalledObjectRef;
+               }
+
                public ObjRef (MarshalByRefObject mbr, Type type)
                {
-                       this.mbr = mbr;
-                       this.type = type;
+                       if (mbr == null)
+                               throw new ArgumentNullException ("mbr");
+                       
+                       if (type == null)
+                               throw new ArgumentNullException ("type");
+
+                       // The ObjRef can only be constructed if the given mbr
+                       // has already been marshalled using RemotingServices.Marshall
+
+                       uri = RemotingServices.GetObjectUri(mbr);
+                       typeInfo = new TypeInfo(type);
+
+                       if (!type.IsAssignableFrom (mbr.GetType()))
+                               throw new RemotingException ("The server object type cannot be cast to the requested type " + type.FullName + ".");
+
+                       UpdateChannelInfo();
+               }
+
+               internal ObjRef (Type type, string url, object remoteChannelData)
+               {
+                       uri = url;
+                       typeInfo = new TypeInfo(type);
+
+                       if (remoteChannelData != null)
+                               channel_info = new ChannelInfo (remoteChannelData);
+
+                       flags |= WellKnowObjectRef;
                }
 
-               public ObjRef (SerializationInfo si, StreamingContext sc)
+               protected ObjRef (SerializationInfo si, StreamingContext sc)
                {
-                       // FIXME: Implement.
-                       //
-                       // This encarnates the object from serialized data.
+                       SerializationInfoEnumerator en = si.GetEnumerator();
+                       // Info to serialize: uri, objrefFlags, typeInfo, envoyInfo, channelInfo
+
+                       bool marshalledValue = true;
+
+                       while (en.MoveNext ()) {
+                               switch (en.Name) {
+                               case "uri":
+                                       uri = (string)en.Value;
+                                       break;
+                               case "typeInfo":
+                                       typeInfo = (IRemotingTypeInfo)en.Value;
+                                       break;
+                               case "channelInfo":
+                                       channel_info = (IChannelInfo)en.Value;
+                                       break;
+                               case "envoyInfo":
+                                       envoyInfo = (IEnvoyInfo)en.Value;
+                                       break;
+                               case "fIsMarshalled":
+                                       int status;
+                                       Object o = en.Value;
+                                       if (o is string)
+                                               status = ((IConvertible) o).ToInt32(null);
+                                       else
+                                               status = (int) o;
+
+                                       if (status == 0)
+                                               marshalledValue = false;
+                                       break;
+                               case "objrefFlags":
+                                       flags = Convert.ToInt32 (en.Value);
+                                       break;
+                               default:
+                                       throw new NotSupportedException ();
+                               }
+                       }
+                       if (marshalledValue) flags |= MarshalledObjectRef;
+               }
+
+               internal bool IsPossibleToCAD () 
+               {
+                       // we should check if this obj ref belongs to a cross app context.
+
+                       // Return false. If not, serialization of this ObjRef will not work
+                       // on the target AD.
+                       return false;
+               }
+
+               internal bool IsReferenceToWellKnow
+               {
+                       get { return (flags & WellKnowObjectRef) > 0; }
+               }
+
+               public virtual IChannelInfo ChannelInfo {
+
+                       get {
+                               return channel_info;
+                       }
+                       
+                       set {
+                               channel_info = value;
+                       }
+               }
+               
+               public virtual IEnvoyInfo EnvoyInfo {
+                       get {
+                               return envoyInfo;
+                       }
+                       set {
+                               envoyInfo = value;
+                       }
+               }
+               
+               public virtual IRemotingTypeInfo TypeInfo {
+                       get {
+                               return typeInfo;
+                       }
+                       set {
+                               typeInfo = value;
+                       }
+               }
+               
+               public virtual string URI {
+                       get {
+                               return uri;
+                       }
+                       set {
+                               uri = value;
+                       }
                }
 
                public virtual void GetObjectData (SerializationInfo si, StreamingContext sc)
                {
-                       // FIXME:
+                       si.SetType (GetType());
+                       si.AddValue ("uri", uri);
+                       si.AddValue ("typeInfo", typeInfo, typeof (IRemotingTypeInfo));
+                       si.AddValue ("envoyInfo", envoyInfo, typeof (IEnvoyInfo));
+                       si.AddValue ("channelInfo", channel_info, typeof(IChannelInfo));
+                       si.AddValue ("objrefFlags", flags);
                }
 
                public virtual object GetRealObject (StreamingContext sc)
                {
-                       // FIXME:
-                       
-                       return null;
+                       if ((flags & MarshalledObjectRef) > 0)
+                               return RemotingServices.Unmarshal (this);
+                       else
+                               return this;
                }
 
                public bool IsFromThisAppDomain ()
                {
-                       // FIXME:
-                       
-                       return true;
+                       Identity identity = RemotingServices.GetIdentityForUri (uri);
+                       if (identity == null) return false;             // URI not registered in this domain
+
+                       return identity.IsFromThisAppDomain;
                }
 
                public bool IsFromThisProcess ()
                {
-                       // FIXME:
+                       foreach (object data in channel_info.ChannelData)
+                       {
+                               if (data is CrossAppDomainData)
+                               {
+                                       string refProcId = ((CrossAppDomainData)data).ProcessID;
+                                       return (refProcId == RemotingConfiguration.ProcessId);
+                               }
+                       }
                        
                        return true;
                }
+
+               internal void UpdateChannelInfo()
+               {
+                       channel_info = new ChannelInfo ();
+               }
+
+               internal Type ServerType
+               {
+                       get
+                       {
+                               if (_serverType == null) _serverType = Type.GetType (typeInfo.TypeName);
+                               return _serverType;
+                       }
+               }
        }
 }