Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / Runtime / Remoting / ProxyAttribute.cs / 1305376 / ProxyAttribute.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================ ** ** File: ProxyAttribute.cs ** ** ** Purpose: Defines the attribute that is used on types which ** need custom proxies. ** ** ===========================================================*/ namespace System.Runtime.Remoting.Proxies { using System.Reflection; using System.Runtime.Remoting.Activation; using System.Runtime.Remoting.Contexts; using System.Security.Permissions; // Attribute for types that need custom proxies [System.Security.SecurityCritical] // auto-generated_required [AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = true)] [SecurityPermissionAttribute(SecurityAction.InheritanceDemand, Flags=SecurityPermissionFlag.Infrastructure)] [System.Runtime.InteropServices.ComVisible(true)] public class ProxyAttribute : Attribute , IContextAttribute { public ProxyAttribute() { // Default constructor } // Default implementation of CreateInstance uses our activation services to create an instance // of the transparent proxy or an uninitialized marshalbyrefobject and returns it. [System.Security.SecurityCritical] // auto-generated public virtual MarshalByRefObject CreateInstance(Type serverType) { if (serverType == null) throw new ArgumentNullException("serverType"); RuntimeType rt = serverType as RuntimeType; if (rt == null) throw new ArgumentException(Environment.GetResourceString("Argument_MustBeRuntimeType")); if (!serverType.IsContextful) { throw new RemotingException( Environment.GetResourceString( "Remoting_Activation_MBR_ProxyAttribute")); } if (serverType.IsAbstract) { throw new RemotingException( Environment.GetResourceString( "Acc_CreateAbst")); } return CreateInstanceInternal(rt); } internal MarshalByRefObject CreateInstanceInternal(RuntimeType serverType) { return ActivationServices.CreateInstance(serverType); } // Default implementation of CreateProxy creates an instance of our // remoting proxy [System.Security.SecurityCritical] // auto-generated public virtual RealProxy CreateProxy(ObjRef objRef, Type serverType, Object serverObject, Context serverContext) { RemotingProxy rp = new RemotingProxy(serverType); // If this is a serverID, set the native context field in the TP if (null != serverContext) { RealProxy.SetStubData(rp, serverContext.InternalContextID); } if (objRef != null && objRef.GetServerIdentity().IsAllocated) { rp.SetSrvInfo(objRef.GetServerIdentity(), objRef.GetDomainID()); } // Set the flag indicating that the fields of the proxy // have been initialized rp.Initialized = true; // Sanity check Type t = serverType; if (!t.IsContextful && !t.IsMarshalByRef && (null != serverContext)) { throw new RemotingException( Environment.GetResourceString( "Remoting_Activation_MBR_ProxyAttribute")); } return rp; } // implementation of interface IContextAttribute [System.Security.SecurityCritical] [System.Runtime.InteropServices.ComVisible(true)] public bool IsContextOK(Context ctx, IConstructionCallMessage msg) { // always happy... return true; } [System.Security.SecurityCritical] [System.Runtime.InteropServices.ComVisible(true)] public void GetPropertiesForNewContext(IConstructionCallMessage msg) { // chill.. do nothing. return; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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