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;
43 using System.Runtime.InteropServices;
44 using System.Threading;
46 namespace System.Runtime.Remoting.Proxies
48 #pragma warning disable 169, 649
49 [StructLayout (LayoutKind.Sequential)]
50 internal class TransparentProxy {
53 bool _custom_type_info;
55 #pragma warning restore 169, 649
58 [StructLayout (LayoutKind.Sequential)]
59 public abstract class RealProxy {
60 // other classes visible to the runtime
61 // derive from this class so keep these locals
62 // in sync with the definition RealProxy
63 // in object-internals.h
65 #pragma warning disable 169, 414
66 #region Sync with object-internals.h
68 internal Context _targetContext;
69 MarshalByRefObject _server;
70 int _targetDomainId = -1;
71 internal string _targetUri;
72 internal Identity _objectIdentity;
76 #pragma warning restore 169, 414
78 protected RealProxy ()
82 protected RealProxy (Type classToProxy) : this(classToProxy, IntPtr.Zero, null)
86 internal RealProxy (Type classToProxy, ClientIdentity identity) : this(classToProxy, IntPtr.Zero, null)
88 _objectIdentity = identity;
91 protected RealProxy (Type classToProxy, IntPtr stub, object stubData)
93 if (!classToProxy.IsMarshalByRef && !classToProxy.IsInterface)
94 throw new ArgumentException("object must be MarshalByRef");
96 this.class_to_proxy = classToProxy;
98 if (stub != IntPtr.Zero)
99 throw new NotSupportedException ("stub is not used in Mono");
102 [MethodImplAttribute(MethodImplOptions.InternalCall)]
103 extern static Type InternalGetProxyType (object transparentProxy);
105 public Type GetProxiedType()
107 if (_objTP == null) {
108 if (class_to_proxy.IsInterface) return typeof(MarshalByRefObject);
109 else return class_to_proxy;
111 return InternalGetProxyType (_objTP);
114 public virtual ObjRef CreateObjRef (Type requestedType)
116 return RemotingServices.Marshal ((MarshalByRefObject) GetTransparentProxy(), null, requestedType);
119 public virtual void GetObjectData (SerializationInfo info, StreamingContext context)
121 Object obj = GetTransparentProxy();
122 RemotingServices.GetObjectData (obj, info, context);
125 internal Identity ObjectIdentity
127 get { return _objectIdentity; }
128 set { _objectIdentity = value; }
132 public virtual IntPtr GetCOMIUnknown (bool fIsMarshalled)
134 throw new NotImplementedException ();
138 public virtual void SetCOMIUnknown (IntPtr i)
140 throw new NotImplementedException ();
144 public virtual IntPtr SupportsInterface (ref Guid iid)
146 throw new NotImplementedException ();
149 public static object GetStubData (RealProxy rp)
154 public static void SetStubData (RealProxy rp, object stubData)
156 rp._stubData = stubData;
159 public abstract IMessage Invoke (IMessage msg);
161 /* this is called from unmanaged code */
162 internal static object PrivateInvoke (RealProxy rp, IMessage msg, out Exception exc,
163 out object [] out_args)
165 MonoMethodMessage mMsg = (MonoMethodMessage) msg;
166 mMsg.LogicalCallContext = Thread.CurrentThread.GetMutableExecutionContext().LogicalCallContext;
167 CallType call_type = mMsg.CallType;
168 bool is_remproxy = (rp is RemotingProxy);
171 IMethodReturnMessage res_msg = null;
173 if (call_type == CallType.BeginInvoke)
174 // todo: set CallMessage in runtime instead
175 mMsg.AsyncResult.CallMessage = mMsg;
177 if (call_type == CallType.EndInvoke)
178 res_msg = (IMethodReturnMessage)mMsg.AsyncResult.EndInvoke ();
180 // Check for constructor msg
181 if (mMsg.MethodBase.IsConstructor)
184 res_msg = (IMethodReturnMessage) (rp as RemotingProxy).ActivateRemoteObject ((IMethodMessage) msg);
186 msg = new ConstructionCall (rp.GetProxiedType ());
194 res_msg = (IMethodReturnMessage)rp.Invoke (msg);
195 } catch (Exception ex) {
197 if (call_type == CallType.BeginInvoke) {
198 // If async dispatch crashes, don't propagate the exception.
199 // The exception will be raised when calling EndInvoke.
200 mMsg.AsyncResult.SyncProcessMessage (new ReturnMessage (ex, msg as IMethodCallMessage));
201 res_msg = new ReturnMessage (null, null, 0, null, msg as IMethodCallMessage);
206 // Note, from begining this code used AsyncResult.IsCompleted for
207 // checking if it was a remoting or custom proxy, but in some
208 // cases the remoting proxy finish before the call returns
209 // causing this method to be called, therefore causing all kind of bugs.
210 if ((!is_remproxy) && call_type == CallType.BeginInvoke && !failed)
212 IMessage asyncMsg = null;
214 // allow calltype EndInvoke to finish
215 asyncMsg = mMsg.AsyncResult.SyncProcessMessage (res_msg as IMessage);
216 out_args = res_msg.OutArgs;
217 res_msg = new ReturnMessage (asyncMsg, null, 0, null, res_msg as IMethodCallMessage);
221 if (res_msg.LogicalCallContext != null && res_msg.LogicalCallContext.HasInfo) {
222 Thread.CurrentThread.GetMutableExecutionContext().LogicalCallContext.Merge (res_msg.LogicalCallContext);
225 exc = res_msg.Exception;
227 // todo: remove throw exception from the runtime invoke
230 throw exc.FixRemotingException();
232 else if (res_msg is IConstructionReturnMessage) {
233 if (out_args == null)
234 out_args = res_msg.OutArgs;
236 else if (mMsg.CallType == CallType.BeginInvoke) {
237 // We don't have OutArgs in this case.
239 else if (mMsg.CallType == CallType.Sync) {
240 out_args = ProcessResponse (res_msg, mMsg);
242 else if (mMsg.CallType == CallType.EndInvoke) {
243 out_args = ProcessResponse (res_msg, mMsg.AsyncResult.CallMessage);
246 if (out_args == null)
247 out_args = res_msg.OutArgs;
250 return res_msg.ReturnValue;
253 [MethodImplAttribute(MethodImplOptions.InternalCall)]
254 internal extern virtual object InternalGetTransparentProxy (string className);
256 public virtual object GetTransparentProxy ()
261 IRemotingTypeInfo rti = this as IRemotingTypeInfo;
265 if (name == null || name == typeof(MarshalByRefObject).AssemblyQualifiedName)
266 name = class_to_proxy.AssemblyQualifiedName;
269 name = class_to_proxy.AssemblyQualifiedName;
271 _objTP = InternalGetTransparentProxy (name);
278 public IConstructionReturnMessage InitializeServerObject(IConstructionCallMessage ctorMsg)
280 throw new NotImplementedException();
283 protected void AttachServer(MarshalByRefObject s)
288 protected MarshalByRefObject DetachServer()
290 MarshalByRefObject ob = _server;
295 protected MarshalByRefObject GetUnwrappedServer()
300 internal void SetTargetDomain (int domainId)
302 _targetDomainId = domainId;
305 // Called by the runtime
306 internal object GetAppDomainTarget ()
308 if (_server == null) {
309 ClientActivatedIdentity identity = RemotingServices.GetIdentityForUri (_targetUri) as ClientActivatedIdentity;
310 if (identity == null) throw new RemotingException ("Server for uri '" + _targetUri + "' not found");
311 _server = identity.GetServerObject ();
316 static object[] ProcessResponse (IMethodReturnMessage mrm, MonoMethodMessage call)
320 MethodInfo mi = (MethodInfo) call.MethodBase;
321 if (mrm.ReturnValue != null && !mi.ReturnType.IsInstanceOfType (mrm.ReturnValue))
322 throw new InvalidCastException ("Return value has an invalid type");
324 // Check out parameters
329 if (call.NeedsOutProcessing (out no))
331 ParameterInfo[] parameters = mi.GetParameters();
332 object[] outArgs = new object [no];
335 foreach (ParameterInfo par in parameters)
337 if (par.IsOut && !par.ParameterType.IsByRef)
339 // Special marshalling required
340 object outArg = par.Position < mrm.ArgCount ? mrm.GetArg (par.Position) : null;
341 if (outArg != null) {
342 object local = call.GetArg (par.Position);
343 if (local == null) throw new RemotingException ("Unexpected null value in local out parameter '" + par.Name + "'");
344 RemotingServices.UpdateOutArgObject (par, local, outArg);
347 else if (par.ParameterType.IsByRef)
349 object outArg = par.Position < mrm.ArgCount ? mrm.GetArg (par.Position) : null;
350 if (outArg != null && !par.ParameterType.GetElementType ().IsInstanceOfType (outArg))
352 throw new InvalidCastException ("Return argument '" + par.Name + "' has an invalid type");
354 outArgs [narg++] = outArg;
360 return new object [0];