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//------------------------------------------------------------------------------
// <copyright file="HandlerFactoryCache.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
/*
* Config related classes for HttpApplication
*/
namespace System.Web.Configuration {
using System;
using System.Configuration;
using System.Web.Compilation;
using System.Security;
using System.Security.Permissions;
using System.Web;
/*
* An object to cache a factory
*/
internal class HandlerFactoryCache {
private IHttpHandlerFactory _factory;
internal HandlerFactoryCache(string type) {
Object instance = Create(type);
// make sure it is either handler or handler factory
if (instance is IHttpHandler) {
// create bogus factory around it
_factory = new HandlerFactoryWrapper((IHttpHandler)instance, GetHandlerType(type));
}
else if (instance is IHttpHandlerFactory) {
_factory = (IHttpHandlerFactory)instance;
}
else {
throw new HttpException(SR.GetString(SR.Type_not_factory_or_handler, instance.GetType().FullName));
}
TelemetryLogger.LogHttpHandler(instance.GetType());
}
internal HandlerFactoryCache(HttpHandlerAction mapping) {
Object instance = mapping.Create();
// make sure it is either handler or handler factory
if (instance is IHttpHandler) {
// create bogus factory around it
_factory = new HandlerFactoryWrapper((IHttpHandler)instance, GetHandlerType(mapping));
}
else if (instance is IHttpHandlerFactory) {
_factory = (IHttpHandlerFactory)instance;
}
else {
throw new HttpException(SR.GetString(SR.Type_not_factory_or_handler, instance.GetType().FullName));
}
TelemetryLogger.LogHttpHandler(instance.GetType());
}
internal IHttpHandlerFactory Factory {
get {
return _factory;
}
}
// Dev10 732000: In a homogenous AppDomain, it is necessary to assert FileIoPermission to load types outside
// the AppDomain's grant set.
[FileIOPermission(SecurityAction.Assert, AllFiles = FileIOPermissionAccess.Read | FileIOPermissionAccess.PathDiscovery)]
private Type GetTypeWithAssert(string type) {
return BuildManager.GetType(type, throwOnError: true, ignoreCase: false);
}
internal Type GetHandlerType( HttpHandlerAction handlerAction ) {
// HACKHACK: for now, let uncreatable types through and error later (for .soap factory)
// This design should change - developers will want to know immediately
// when they misspell a type
Type t = GetTypeWithAssert(handlerAction.Type);
// throw for bad types in deferred case
if (!ConfigUtil.IsTypeHandlerOrFactory(t))
throw new ConfigurationErrorsException(SR.GetString(SR.Type_not_factory_or_handler, handlerAction.Type),
handlerAction.ElementInformation.Source, handlerAction.ElementInformation.LineNumber);
return t;
}
internal Type GetHandlerType(string type) {
// HACKHACK: for now, let uncreatable types through and error later (for .soap factory)
// This design should change - developers will want to know immediately
// when they misspell a type
Type t = GetTypeWithAssert(type);
HttpRuntime.FailIfNoAPTCABit(t, null, null);
// throw for bad types in deferred case
if (!ConfigUtil.IsTypeHandlerOrFactory(t))
throw new ConfigurationErrorsException(SR.GetString(SR.Type_not_factory_or_handler, type));
return t;
}
internal object Create(string type) {
// HACKHACK: for now, let uncreatable types through and error later (for .soap factory)
// This design should change - developers will want to know immediately
// when they misspell a type
return HttpRuntime.CreateNonPublicInstance(GetHandlerType(type));
}
}
}
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