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//
// System.Runtime.Remoting.Proxies.RemotingProxy.cs
//
// Authors:
// Dietmar Maurer (dietmar@ximian.com)
// Lluis Sanchez Gual (lsg@ctv.es)
//
// (C) 2001 Ximian, Inc. http://www.ximian.com
//
//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// 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.Reflection;
using System.Runtime.Remoting.Messaging;
using System.Runtime.Remoting.Activation;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Contexts;
using System.Runtime.CompilerServices;
using System.Threading;
namespace System.Runtime.Remoting.Proxies
{
internal class RemotingProxy : RealProxy, IRemotingTypeInfo
{
static MethodInfo _cache_GetTypeMethod = typeof(System.Object).GetMethod("GetType");
static MethodInfo _cache_GetHashCodeMethod = typeof(System.Object).GetMethod("GetHashCode");
IMessageSink _sink;
bool _hasEnvoySink;
ConstructionCall _ctorCall;
internal RemotingProxy (Type type, ClientIdentity identity) : base (type, identity)
{
_sink = identity.ChannelSink;
_hasEnvoySink = false;
_targetUri = identity.TargetUri;
}
internal RemotingProxy (Type type, string activationUrl, object[] activationAttributes) : base (type)
{
_hasEnvoySink = false;
_ctorCall = ActivationServices.CreateConstructionCall (type, activationUrl, activationAttributes);
}
public override IMessage Invoke (IMessage request)
{
IMethodCallMessage mm = request as IMethodCallMessage;
if (mm != null) {
if (mm.MethodBase == _cache_GetHashCodeMethod)
return new MethodResponse(ObjectIdentity.GetHashCode(), null, null, mm);
if (mm.MethodBase == _cache_GetTypeMethod)
return new MethodResponse(GetProxiedType(), null, null, mm);
}
IInternalMessage im = request as IInternalMessage;
if (im != null) {
if (im.Uri == null) im.Uri = _targetUri;
im.TargetIdentity = _objectIdentity;
}
_objectIdentity.NotifyClientDynamicSinks (true, request, true, false);
IMessage response;
IMessageSink sink;
// Needs to go through the client context sink?
if (Thread.CurrentContext.HasExitSinks && !_hasEnvoySink)
sink = Thread.CurrentContext.GetClientContextSinkChain ();
else
sink = _sink;
MonoMethodMessage mMsg = request as MonoMethodMessage;
if (mMsg == null || mMsg.CallType == CallType.Sync)
response = sink.SyncProcessMessage (request);
else
{
AsyncResult ares = mMsg.AsyncResult;
IMessageCtrl mctrl = sink.AsyncProcessMessage (request, ares);
if (ares != null) ares.SetMessageCtrl (mctrl);
response = new ReturnMessage (null, new object[0], 0, null, mMsg);
}
_objectIdentity.NotifyClientDynamicSinks (false, request, true, false);
return response;
}
internal void AttachIdentity (Identity identity)
{
_objectIdentity = identity;
if (identity is ClientActivatedIdentity) // It is a CBO
{
ClientActivatedIdentity cai = (ClientActivatedIdentity)identity;
_targetContext = cai.Context;
AttachServer (cai.GetServerObject ());
cai.SetClientProxy ((MarshalByRefObject) GetTransparentProxy());
}
if (identity is ClientIdentity)
{
((ClientIdentity)identity).ClientProxy = (MarshalByRefObject) GetTransparentProxy();
_targetUri = ((ClientIdentity)identity).TargetUri;
}
else
_targetUri = identity.ObjectUri;
if (_objectIdentity.EnvoySink != null)
{
_sink = _objectIdentity.EnvoySink;
_hasEnvoySink = true;
}
else
_sink = _objectIdentity.ChannelSink;
_ctorCall = null; // Object already constructed
}
internal IMessage ActivateRemoteObject (IMethodMessage request)
{
if (_ctorCall == null) // It must be a WKO
return new ConstructionResponse (this, null, (IMethodCallMessage) request); // Ignore constructor call for WKOs
_ctorCall.CopyFrom (request);
return ActivationServices.Activate (this, _ctorCall);
}
public string TypeName
{
get
{
if (_objectIdentity is ClientIdentity) {
ObjRef oref = _objectIdentity.CreateObjRef (null);
if (oref.TypeInfo != null) return oref.TypeInfo.TypeName;
}
return GetProxiedType().AssemblyQualifiedName;
}
set
{
throw new NotSupportedException ();
}
}
public bool CanCastTo (Type fromType, object o)
{
if (_objectIdentity is ClientIdentity) {
ObjRef oref = _objectIdentity.CreateObjRef (null);
if (oref.IsReferenceToWellKnow && (fromType.IsInterface || GetProxiedType() == typeof(MarshalByRefObject))) return true;
if (oref.TypeInfo != null) return oref.TypeInfo.CanCastTo (fromType, o);
}
return fromType.IsAssignableFrom (GetProxiedType());
}
~RemotingProxy()
{
if (_objectIdentity != null)
{
if (!(_objectIdentity is ClientActivatedIdentity)) // Local CBO proxy?
RemotingServices.DisposeIdentity (_objectIdentity);
}
}
}
}
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