2 // System.Runtime.Remoting.Proxies.RealProxy.cs
5 // Dietmar Maurer (dietmar@ximian.com)
6 // Lluis Sanchez (lsg@ctv.es)
9 // (C) 2001 Ximian, Inc. http://www.ximian.com
13 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
15 // Permission is hereby granted, free of charge, to any person obtaining
16 // a copy of this software and associated documentation files (the
17 // "Software"), to deal in the Software without restriction, including
18 // without limitation the rights to use, copy, modify, merge, publish,
19 // distribute, sublicense, and/or sell copies of the Software, and to
20 // permit persons to whom the Software is furnished to do so, subject to
21 // the following conditions:
23 // The above copyright notice and this permission notice shall be
24 // included in all copies or substantial portions of the Software.
26 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
30 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
31 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
32 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
36 using System.Reflection;
37 using System.Runtime.Remoting;
38 using System.Runtime.Remoting.Messaging;
39 using System.Runtime.Remoting.Activation;
40 using System.Runtime.Remoting.Contexts;
41 using System.Runtime.CompilerServices;
42 using System.Runtime.Serialization;
45 using System.Runtime.InteropServices;
48 namespace System.Runtime.Remoting.Proxies
50 #pragma warning disable 169, 649
51 internal class TransparentProxy {
54 bool _custom_type_info;
56 #pragma warning restore 169, 649
61 public abstract class RealProxy {
62 // other classes visible to the runtime
63 // derive from this class so keep these locals
64 // in sync with the definition RealProxy
65 // in object-internals.h
67 #pragma warning disable 169, 414
68 #region Sync with object-internals.h
70 internal Context _targetContext;
71 MarshalByRefObject _server;
72 int _targetDomainId = -1;
73 internal string _targetUri;
74 internal Identity _objectIdentity;
78 #pragma warning restore 169, 414
80 protected RealProxy ()
84 protected RealProxy (Type classToProxy) : this(classToProxy, IntPtr.Zero, null)
88 internal RealProxy (Type classToProxy, ClientIdentity identity) : this(classToProxy, IntPtr.Zero, null)
90 _objectIdentity = identity;
93 protected RealProxy (Type classToProxy, IntPtr stub, object stubData)
95 if (!classToProxy.IsMarshalByRef && !classToProxy.IsInterface)
96 throw new ArgumentException("object must be MarshalByRef");
98 this.class_to_proxy = classToProxy;
100 if (stub != IntPtr.Zero)
101 throw new NotSupportedException ("stub is not used in Mono");
104 [MethodImplAttribute(MethodImplOptions.InternalCall)]
105 extern static Type InternalGetProxyType (object transparentProxy);
107 public Type GetProxiedType()
109 if (_objTP == null) {
110 if (class_to_proxy.IsInterface) return typeof(MarshalByRefObject);
111 else return class_to_proxy;
113 return InternalGetProxyType (_objTP);
116 public virtual ObjRef CreateObjRef (Type requestedType)
118 return RemotingServices.Marshal ((MarshalByRefObject) GetTransparentProxy(), null, requestedType);
121 public virtual void GetObjectData (SerializationInfo info, StreamingContext context)
123 Object obj = GetTransparentProxy();
124 RemotingServices.GetObjectData (obj, info, context);
127 internal Identity ObjectIdentity
129 get { return _objectIdentity; }
130 set { _objectIdentity = value; }
134 public virtual IntPtr GetCOMIUnknown (bool fIsMarshalled)
136 throw new NotImplementedException ();
140 public virtual void SetCOMIUnknown (IntPtr i)
142 throw new NotImplementedException ();
146 public virtual IntPtr SupportsInterface (ref Guid iid)
148 throw new NotImplementedException ();
151 public static object GetStubData (RealProxy rp)
156 public static void SetStubData (RealProxy rp, object stubData)
158 rp._stubData = stubData;
161 public abstract IMessage Invoke (IMessage msg);
163 /* this is called from unmanaged code */
164 internal static object PrivateInvoke (RealProxy rp, IMessage msg, out Exception exc,
165 out object [] out_args)
167 MonoMethodMessage mMsg = (MonoMethodMessage) msg;
168 mMsg.LogicalCallContext = CallContext.CreateLogicalCallContext (true);
169 CallType call_type = mMsg.CallType;
170 bool is_remproxy = (rp is RemotingProxy);
172 IMethodReturnMessage res_msg = null;
174 if (call_type == CallType.BeginInvoke)
175 // todo: set CallMessage in runtime instead
176 mMsg.AsyncResult.CallMessage = mMsg;
178 if (call_type == CallType.EndInvoke)
179 res_msg = (IMethodReturnMessage)mMsg.AsyncResult.EndInvoke ();
181 // Check for constructor msg
182 if (mMsg.MethodBase.IsConstructor)
185 res_msg = (IMethodReturnMessage) (rp as RemotingProxy).ActivateRemoteObject ((IMethodMessage) msg);
187 msg = new ConstructionCall (rp.GetProxiedType ());
192 res_msg = (IMethodReturnMessage)rp.Invoke (msg);
194 // Note, from begining this code used AsyncResult.IsCompleted for
195 // checking if it was a remoting or custom proxy, but in some
196 // cases the remoting proxy finish before the call returns
197 // causing this method to be called, therefore causing all kind of bugs.
198 if ((!is_remproxy) && call_type == CallType.BeginInvoke)
200 IMessage asyncMsg = null;
202 // allow calltype EndInvoke to finish
203 asyncMsg = mMsg.AsyncResult.SyncProcessMessage (res_msg as IMessage);
204 res_msg = new ReturnMessage (asyncMsg, null, 0, null, res_msg as IMethodCallMessage);
208 if (res_msg.LogicalCallContext != null && res_msg.LogicalCallContext.HasInfo)
209 CallContext.UpdateCurrentCallContext (res_msg.LogicalCallContext);
211 exc = res_msg.Exception;
213 // todo: remove throw exception from the runtime invoke
216 throw exc.FixRemotingException();
218 else if (res_msg is IConstructionReturnMessage || mMsg.CallType == CallType.BeginInvoke) {
219 out_args = res_msg.OutArgs;
221 else if (mMsg.CallType == CallType.Sync) {
222 out_args = ProcessResponse (res_msg, mMsg);
224 else if (mMsg.CallType == CallType.EndInvoke) {
225 out_args = ProcessResponse (res_msg, mMsg.AsyncResult.CallMessage);
228 out_args = res_msg.OutArgs;
231 return res_msg.ReturnValue;
234 [MethodImplAttribute(MethodImplOptions.InternalCall)]
235 internal extern virtual object InternalGetTransparentProxy (string className);
237 public virtual object GetTransparentProxy ()
242 IRemotingTypeInfo rti = this as IRemotingTypeInfo;
246 if (name == null || name == typeof(MarshalByRefObject).AssemblyQualifiedName)
247 name = class_to_proxy.AssemblyQualifiedName;
250 name = class_to_proxy.AssemblyQualifiedName;
252 _objTP = InternalGetTransparentProxy (name);
261 public IConstructionReturnMessage InitializeServerObject(IConstructionCallMessage ctorMsg)
263 throw new NotImplementedException();
266 protected void AttachServer(MarshalByRefObject s)
271 protected MarshalByRefObject DetachServer()
273 MarshalByRefObject ob = _server;
278 protected MarshalByRefObject GetUnwrappedServer()
283 internal void SetTargetDomain (int domainId)
285 _targetDomainId = domainId;
288 // Called by the runtime
289 internal object GetAppDomainTarget ()
291 if (_server == null) {
292 ClientActivatedIdentity identity = RemotingServices.GetIdentityForUri (_targetUri) as ClientActivatedIdentity;
293 if (identity == null) throw new RemotingException ("Server for uri '" + _targetUri + "' not found");
294 _server = identity.GetServerObject ();
299 static object[] ProcessResponse (IMethodReturnMessage mrm, MonoMethodMessage call)
303 MethodInfo mi = (MethodInfo) call.MethodBase;
304 if (mrm.ReturnValue != null && !mi.ReturnType.IsInstanceOfType (mrm.ReturnValue))
305 throw new InvalidCastException ("Return value has an invalid type");
307 // Check out parameters
312 if (call.NeedsOutProcessing (out no))
314 ParameterInfo[] parameters = mi.GetParameters();
315 object[] outArgs = new object [no];
318 foreach (ParameterInfo par in parameters)
320 if (par.IsOut && !par.ParameterType.IsByRef)
322 // Special marshalling required
323 object outArg = par.Position < mrm.ArgCount ? mrm.GetArg (par.Position) : null;
324 if (outArg != null) {
325 object local = call.GetArg (par.Position);
326 if (local == null) throw new RemotingException ("Unexpected null value in local out parameter '" + par.Name + "'");
327 RemotingServices.UpdateOutArgObject (par, local, outArg);
330 else if (par.ParameterType.IsByRef)
332 object outArg = par.Position < mrm.ArgCount ? mrm.GetArg (par.Position) : null;
333 if (outArg != null && !par.ParameterType.GetElementType ().IsInstanceOfType (outArg))
335 throw new InvalidCastException ("Return argument '" + par.Name + "' has an invalid type");
337 outArgs [narg++] = outArg;
343 return new object [0];