53 lines
2.2 KiB
C#
53 lines
2.2 KiB
C#
|
//------------------------------------------------------------------------------
|
|||
|
|
// <copyright file="SystemWebProxy.cs" company="Microsoft">
|
|||
|
|
// Copyright (c) Microsoft Corporation. All rights reserved.
|
|||
|
|
// </copyright>
|
|||
|
|
//------------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
namespace System.Web.Util {
|
|||
|
|
using System;
|
|||
|
|
using System.Collections.Generic;
|
|||
|
|
using System.Diagnostics;
|
|||
|
|
using System.Reflection;
|
|||
|
|
using System.Web.Security;
|
|||
|
|
using System.Security.Permissions;
|
|||
|
|
|
|||
|
|
// Because this assembly ships in the client SKU, whereas System.Web.dll ships in the Extended SKU, we need to
|
|||
|
|
// proxy any usage of System.Web.dll. This allows us to fail gracefully if the Extended SKU is not present.
|
|||
|
|
// Users can avoid this failure by overridding all virtual members on both of these types which will prevent
|
|||
|
|
// this class, and hence, System.Web.dll, from ever being called.
|
|||
|
|
internal static class SystemWebProxy {
|
|||
|
|
|
|||
|
|
public static readonly IMembershipAdapter Membership = GetMembershipAdapter();
|
|||
|
|
|
|||
|
|
private static IMembershipAdapter GetMembershipAdapter() {
|
|||
|
|
IMembershipAdapter membership = CreateSystemWebMembershipAdapter();
|
|||
|
|
if (membership == null) {
|
|||
|
|
membership = new DefaultMembershipAdapter();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return membership;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private static IMembershipAdapter CreateSystemWebMembershipAdapter() {
|
|||
|
|
Type type = Type.GetType("System.Web.Security.MembershipAdapter, " + AssemblyRef.SystemWeb, throwOnError:false);
|
|||
|
|
if (type != null) {
|
|||
|
|
// Running on Extended SKU
|
|||
|
|
|
|||
|
|
return (IMembershipAdapter)DangerousCreateInstance(type);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Running on Client SKU
|
|||
|
|
return null;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Partially trusted callers might not have permissions to create an instance of
|
|||
|
|
// System.Web’s MembershipAdapter type (it’s an internal type), so give them access.
|
|||
|
|
[ReflectionPermission(SecurityAction.Assert, Flags=ReflectionPermissionFlag.MemberAccess)]
|
|||
|
|
private static object DangerousCreateInstance(Type type) {
|
|||
|
|
|
|||
|
|
return Activator.CreateInstance(type);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|