// This should be overridden and call a static method in Global.asax
// (see https://docs.simpleinjector.org/en/latest/webformsintegration.html)
protected virtual void InitializeHandler(IHttpHandler handler)
{
var handlerType = handler is Page?handler.GetType().BaseType : handler.GetType();
var container = ContainerContextFactory.Current.GetContext().Container;
container.GetRegistration(handlerType, true).Registration.InitializeInstance(handler);
}
public static void InitializeHandler(IHttpHandler handler)
{
var handlerType = handler is Page
? handler.GetType().BaseType
: handler.GetType();
if (handlerType == null)
{
return;
}
var instance = Container.GetRegistration(handlerType, true);
instance?.Registration.InitializeInstance(handler);
}
public HttpHandlerResult Run(IHttpHandler httpHandler, HttpFilterEvents eventType)
{
if (string.IsNullOrEmpty(FunctionName))
{
throw new ApplicationException("FunctionName is undefined!");
}
if (Events == HttpFilterEvents.None)
{
return(null);
}
if (!Events.HasFlag(eventType))
{
return(null);
}
if (Function != null)
{
return(Function.Invoke(httpHandler));
}
var method = httpHandler.GetType().GetMethod(FunctionName);
if (method == null)
{
throw new ApplicationException($"HttpFilter method '{FunctionName}' not found!");
}
var @params = new object[] { httpHandler };
return((HttpHandlerResult)method.Invoke(httpHandler, @params));
}
private static void Action(IHttpHandler httpHandler, TextWriter textWriter, bool arg3)
{
var handler = httpHandler as MvcHandler;
if (handler == null)
{
var prop = httpHandler.GetType().GetProperty("InnerHandler",
BindingFlags.NonPublic | BindingFlags.Instance);
if (prop != null)
{
handler = prop.GetValue(httpHandler, null) as MvcHandler;
}
}
if (handler != null)
{
var factory = ControllerBuilder.Current.GetControllerFactory();
var controllerName = handler.RequestContext.RouteData.GetRequiredString("controller") + "Controller";
var controller = factory.CreateController(handler.RequestContext, controllerName) as Controller;
var controllerContext = controller.Mock(x => x.ControllerContext);
controllerContext.SetupGet(x => x.HttpContext).Returns(handler.RequestContext.HttpContext);
controllerContext.SetupGet(x => x.RouteData).Returns(handler.RequestContext.RouteData);
var previousOutput = controllerContext.Object.HttpContext.Response.Output;
var response = controllerContext.Mock(x => x.HttpContext.Response);
response.Setup(x => x.Output).Returns(textWriter);
var previousHttpContext = HttpContext.Current;
controller.Invoke(handler.RequestContext.RouteData.GetRequiredString("action"));
HttpContext.Current = previousHttpContext;
response.Setup(x => x.Output).Returns(previousOutput);
}
}
void PostAcquireRequestState(object sender, EventArgs e)
{
// The PostAcquireRequestState event is raised after the session data has been obtained.
// If the request is for a class that implements System.Web.UI.Page and it is a rest
// method call, the WebServiceData class (that was explained in a previous post) is used
// to call the requested method from the Page. After the method has been called,
// the CompleteRequest method is called, bypassing all pipeline events and executing
// the EndRequest method. This allows MS AJAX to be able to call a method on a page
// instead of having to create a web service to call a method.
HttpApplication app = (HttpApplication)sender;
HttpContext context = app.Context;
if (context == null)
{
return;
}
HttpRequest request = context.Request;
string contentType = request.ContentType;
IHttpHandler currentHandler = context.CurrentHandler;
if (currentHandler == null)
{
return;
}
Type pageType = currentHandler.GetType();
if (typeof(Page).IsAssignableFrom(pageType) && !String.IsNullOrEmpty(contentType) && contentType.StartsWith("application/json", StringComparison.OrdinalIgnoreCase))
{
IHttpHandler h = RestHandler.GetHandler(context, pageType, request.FilePath);
h.ProcessRequest(context);
app.CompleteRequest();
}
}
public static void TrySetPageModel(HttpContext context)
{
if (context == null || context.Handler == null)
{
return;
}
IHttpHandler handler = context.Handler;
// 判断当前处理器是否从MyPageView<TModel>继承过来
Type handlerType = handler.GetType().BaseType;
if (handlerType.IsGenericType &&
handlerType.GetGenericTypeDefinition() == MyPageViewOpenType)
{
// 查找能响应这个请求的Action，并获取视图数据。
InvokeInfo vkInfo = ReflectionHelper.GetActionInvokeInfo(context.Request.FilePath);
if (vkInfo == null)
{
return;
}
object model = ActionExecutor.ExecuteActionInternal(context, vkInfo);
// 设置页面Model
SetPageModel(context.Handler, model);
}
}
protected void SetPropertyValue(IHttpHandler handler, object key, object value)
{
if (value == null)
{
return;
}
Type type = handler.GetType();
PropertyInfo info =
type.GetProperty(key.ToString(),
BindingFlags.Public | BindingFlags.Instance | BindingFlags.IgnoreCase);
if (info == null || !info.CanWrite)
{
return;
}
if (!value.GetType().IsAssignableFrom(info.PropertyType))
{
return;
}
info.GetSetMethod().Invoke(handler, new object[] { value });
}
public void Test1()
{
InvokeInfo invokeInfo1 = new InvokeInfo();
IHttpHandler handler1 = ActionHandler.CreateHandler(invokeInfo1);
Assert.AreEqual(typeof(ActionHandler), handler1.GetType());
}
public static object ExecuteProcess(IHttpHandler handler)
{
ExceptionHelper.FalseThrow <ArgumentNullException>(handler != null, "handler");
MethodInfo mi = GetMethodInfoByCurrentUri(handler.GetType());
ExceptionHelper.FalseThrow(mi != null, "不能处理请求，无法从当前的Request找到匹配的ProcessRequest方法");
return(mi.Invoke(handler, PrepareMethodParamValues(handler, mi)));
}
private void BuildUpPage(IHttpHandler page)
{
Container container = HttpContext.Current.Application[Container.CONTAINER] as Container;
if (container == null)
{
throw new ApplicationException("Container in application context is null.");
}
container.BuildUp(page, page.GetType().BaseType);
}
private static IHttpHandler Build(IHttpHandler page)
{
try
{
return(unityContainer.BuildUp(page.GetType().BaseType, page) as IHttpHandler);
}
catch (Exception)
{
return(page);
}
}
private static bool PageUsesInjection(IHttpHandler handler)
{
if (handler == null)
{
return(false);
}
var attributes = handler.GetType().GetCustomAttributes(typeof(UsesInjectionAttribute), true);
return(attributes.Length > 0);
}
public void Test2()
{
InvokeInfo invokeInfo2 = new InvokeInfo();
invokeInfo2.Action = new ActionDescription(typeof(ActionHandlerTest).GetMethod("Test1"));
invokeInfo2.Action.GetType().SetValue("SessionMode",
invokeInfo2.Action, new SessionModeAttribute(SessionMode.Support));
IHttpHandler handler2 = ActionHandler.CreateHandler(invokeInfo2);
Assert.AreEqual(typeof(RequiresSessionActionHandler), handler2.GetType());
}
/// <summary>
/// 当前请求处理的handler
/// </summary>
/// <returns></returns>
public ViewResult Handler()
{
IHttpHandler handler = base.HttpContext.Handler;
//IHttpHandlerFactory
//MvcHandler
//MvcRouteHandler
ViewBag.HandlerName = handler.GetType().ToString();
ViewBag.Url = Request.Url.AbsoluteUri;
return(View());
}
public string Sniff(IHttpHandler handler)
{
if (handler == null)
{
return string.Empty;
}
WorkSpaceInfo wsi = (WorkSpaceInfo) Attribute.GetCustomAttribute(handler.GetType(), typeof (WorkSpaceInfo));
if (wsi != null)
{
return wsi.WorkSpaceName;
}
return string.Empty;
}
internal async Task <HttpHandlerResult> ExecuteAsync(IHttpHandler handlerObj, CancellationToken token)
{
var method = handlerObj.HttpContext.Request.HttpMethod;
HttpHandlerResult result = null;
var filters = handlerObj.GetType().GetCustomAttributes()
.OfType <HttpFilterAttribute>().ToArray();
foreach (var filter in filters)
{
result = filter.Run(handlerObj, HttpFilterEvents.Before);
if (result != null)
{
return(result);
}
}
try {
if (handlerObj is HttpHandlerAsync handlerAsync)
{
if (!execMapAsync.TryGetValue(method, out var execFunc))
{
throw new ApplicationException($"Unsupported method '{method}'!");
}
result = await execFunc.Invoke(handlerAsync, token);
}
else if (handlerObj is HttpHandler handler)
{
if (!execMap.TryGetValue(method, out var execFunc))
{
throw new ApplicationException($"Unsupported method '{method}'!");
}
result = await Task.Run(() => execFunc.Invoke(handler), token);
}
}
finally {
foreach (var filter in filters)
{
var newResult = filter.RunAfter(handlerObj, result);
if (newResult != null)
{
result = newResult;
break;
}
}
}
return(result);
}
public void Test3()
{
InvokeInfo invokeInfo3 = new InvokeInfo();
invokeInfo3.Controller = new ControllerDescription(typeof(ActionHandlerTest));
invokeInfo3.Controller.GetType().SetValue("SessionMode",
invokeInfo3.Controller, new SessionModeAttribute(SessionMode.ReadOnly));
IHttpHandler handler3 = ActionHandler.CreateHandler(invokeInfo3);
Assert.AreEqual(typeof(ReadOnlySessionActionHandler), handler3.GetType());
Assert.AreEqual(false, handler3.IsReusable);
}
private static void OnPreRequestHandlerExecute(object sender, EventArgs e)
{
IHttpHandler handler = HttpContext.Current.Handler;
HttpContext.Current.Application.GetContainer().BuildUp(handler.GetType(), handler);
// User Controls are ready to be built up after the page initialization is complete
Page page = HttpContext.Current.Handler as Page;
if (page != null)
{
page.InitComplete += OnPageInitComplete;
}
}
public string Sniff(IHttpHandler handler)
{
if (handler == null)
{
return(string.Empty);
}
WorkSpaceInfo wsi = (WorkSpaceInfo)Attribute.GetCustomAttribute(handler.GetType(), typeof(WorkSpaceInfo));
if (wsi != null)
{
return(wsi.WorkSpaceName);
}
return(string.Empty);
}
/// <summary>在页面查找指定ID的控件，采用反射字段的方法，避免遍历Controls引起子控件构造</summary>
/// <typeparam name="T"></typeparam>
/// <param name="id"></param>
/// <returns></returns>
public static T FindControlInPage <T>(String id) where T : Control
{
if (HttpContext.Current == null)
{
return(null);
}
IHttpHandler handler = HttpContext.Current.Handler;
if (handler == null)
{
return(null);
}
FieldInfoX fix = null;
if (!String.IsNullOrEmpty(id))
{
fix = FieldInfoX.Create(handler.GetType(), id);
}
else
{
Type t = typeof(T);
FieldInfo fi = handler.GetType().GetFields(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic).FirstOrDefault(item => item.FieldType == t);
if (fi != null)
{
fix = FieldInfoX.Create(fi);
}
}
if (fix == null)
{
return(null);
}
return(fix.GetValue(handler) as T);
}
public void Init(HttpApplication context)
{
context.PreRequestHandlerExecute += (sender, e) =>
{
IHttpHandler handler = context.Context.CurrentHandler;
if (handler != null)
{
var name = handler.GetType().Assembly.FullName;
if (!name.StartsWith("System.Web") && !name.StartsWith("Microsoft"))
{
InitializeHandler(handler);
}
}
};
}
/// <summary>
/// Evaluate handler condition
/// </summary>
/// <param name="args"></param>
/// <returns></returns>
public bool Evaluate(ConditionArgs args)
{
bool isMatch = false;
IHttpHandler handler = (HttpContext.Current != null ?
HttpContext.Current.CurrentHandler :
null);
if (handler != null && _handlerType != null)
{
isMatch = handler.GetType().Equals(_handlerType);
}
return(isMatch);
}
protected void Application_PostMapRequestHandler(object sender, EventArgs e)
{
IHttpHandler handler = this.Request.RequestContext.HttpContext.CurrentHandler;
var attrs = handler.GetType().GetCustomAttributes(typeof(AuthorizationAttribute), true);
if (attrs.Length > 0)
{
var code = (attrs[0] as AuthorizationAttribute).AuthCode;
var token = this.Request.Params.Get("token");
try
{
//给接口发送请求
var postData = "token=" + token;
var delRpturl = host + this.Server.HtmlEncode(string.Format("/auth/{0}?{1}", code, postData));
var proxyRequest = (HttpWebRequest)WebRequest.Create(delRpturl);
proxyRequest.Method = "Post";
proxyRequest.UserAgent = this.Request.UserAgent;
proxyRequest.ContentType = "application/x-www-form-urlencoded";
proxyRequest.ContentLength = 0;
var noCachePolicy = new HttpRequestCachePolicy(HttpRequestCacheLevel.NoCacheNoStore);
proxyRequest.CachePolicy = noCachePolicy;
//发出代理请求，并获取响应
using (HttpWebResponse proxyResponse = proxyRequest.GetResponse() as HttpWebResponse)
{
string Result;
using (Stream receiveStream = proxyResponse.GetResponseStream())
{
Encoding Encode = Encoding.GetEncoding("utf-8");
StreamReader readStream = new StreamReader(receiveStream, Encode);
Result = readStream.ReadToEnd();
}
proxyResponse.Close();
if (Result == "false")
{
this.Context.Response.ContentType = "text/html";
this.Response.StatusCode = 202;
this.Response.Write(405);
this.Response.End();
return;
}
}
}
catch (Exception ex)
{
throw ex;
}
}
}
/// <summary>
/// Checks whether or not handler is a transfer handler.
/// </summary>
/// <param name="handler">An instance of handler to validate.</param>
/// <returns>True if handler is a transfer handler, otherwise - False.</returns>
private bool IsHandlerToFilter(IHttpHandler handler)
{
if (handler != null)
{
var handlerName = handler.GetType().FullName;
foreach (var h in this.handlersToFilter.Select(t => t.Value))
{
if (string.Equals(handlerName, h, StringComparison.Ordinal))
{
return true;
}
}
}
return false;
}
protected override object Evaluate(HttpContext context, Control control)
{
if ((context == null) || (string.Empty.Equals(PropertyName)))
{
return(null);
}
IHttpHandler handler = context.Handler;
Type type = handler.GetType();
PropertyInfo property = type.GetProperty(PropertyName);
if (property == null)
{
return(null);
}
return(property.GetValue(handler, null));
}
/// <summary>
/// Checks whether or not handler is a transfer handler.
/// </summary>
/// <param name="handler">An instance of handler to validate.</param>
/// <returns>True if handler is a transfer handler, otherwise - False.</returns>
private bool IsHandlerToFilter(IHttpHandler handler)
{
if (handler != null)
{
var handlerName = handler.GetType().FullName;
foreach (var h in this.handlersToFilter.Select(t => t.Value))
{
if (string.Equals(handlerName, h, StringComparison.Ordinal))
{
return(true);
}
}
}
return(false);
}
public ViewResult MVCHandler()
{
//System.Web.Routing.UrlRoutingModule
List <string> processList = new List <string>();
processList.Add(string.Format("1 请求已经生成HttpApplication，经过一系列的Module处理后"));
RouteData routeData = base.RouteData;
processList.Add(string.Format("2 请求到达Module:{0},该模块会解析当前的请求，找到当前请求的{1}", typeof(UrlRoutingModule), routeData.GetType().Name));
processList.Add(string.Format("3 该RouteData的内容为{0}，", JsonHelper.ToJson <RouteData>(routeData)));
//IHttpHandler handler = routeData.RouteHandler.GetHttpHandler(base.Request.RequestContext);//当前请求信息为参数
//这里会抛异常 Additional information: 只能在引发“HttpApplication.AcquireRequestState”之前调用“HttpContext.SetSessionStateBehavior”。
//这个时候handler已经明确了，不能再次获取了
IHttpHandler handler = base.HttpContext.Handler;
processList.Add(string.Format("4 然后调用该RouteData.RouteHandler.GetHttpHandler去获取该请求的处理handler：{0}", handler.GetType().FullName));
processList.Add(string.Format("5 该handler默认是{0}，这个IHttpHandler会根据this.RequestContext.RouteData的控制器信息去找控制器的工厂，也就是我们扩展的{1},通过反射来完成控制器的激活 ",
handler.GetType().FullName, typeof(UnityControllerFactory)));
/*
* public class MvcHandler : IHttpHandler
* {
* public bool IsReusable
* {
* get { return false; }
* }
* public RequestContext RequestContext { get; private set; }
* public MvcHandler(RequestContext requestContext)
* {
* this.RequestContext = requestContext;
* }
* public void ProcessRequest(HttpContext context)
* {
* string controllerName = this.RequestContext.RouteData.Controller;
* IControllerFactory controllerFactory = ControllerBuilder.Current.GetControllerFactory();
* IController controller = controllerFactory.CreateController(this.RequestContext, controllerName);
* controller.Execute(this.RequestContext);
* }
* }
*/
//UrlRoutingModule
//RouteHandler
//System.Web.Mvc.MvcHandler
return(View(processList));
}
/// <summary>
/// Checks whether or not handler is a transfer handler.
/// </summary>
/// <param name="handler">An instance of handler to validate.</param>
/// <returns>True if handler is a transfer handler, otherwise - False.</returns>
private bool IsHandlerToFilter(IHttpHandler handler)
{
if (handler != null)
{
var handlerName = handler.GetType().FullName;
foreach (var h in this.Handlers)
{
if (string.Equals(handlerName, h, StringComparison.Ordinal))
{
WebEventSource.Log.WebRequestFilteredOutByRequestHandler();
return(true);
}
}
}
return(false);
}
public void ConfigureSessionState_ReadOnly_ChangesHandler()
{
// Arrange
Mock <HttpContextBase> mockHttpContext = new Mock <HttpContextBase>();
mockHttpContext.SetupProperty(o => o.Handler);
HttpContextBase httpContext = mockHttpContext.Object;
DynamicSessionStateConfigurator35 configurator = new DynamicSessionStateConfigurator35(httpContext);
// Act
configurator.ConfigureSessionState(ControllerSessionState.ReadOnly);
IHttpHandler newHandler = httpContext.Handler;
// Assert
Assert.AreEqual(typeof(MvcReadOnlySessionHandler), newHandler.GetType());
}
/// <summary>
/// Internal for testability outside of a web application.
/// </summary>
/// <param name="handler"></param>
/// <returns>The injection behaviour.</returns>
protected internal IInjectionBehaviour GetInjectionBehaviour(IHttpHandler handler)
{
if (handler == null)
{
throw new ArgumentNullException("handler");
}
if (handler is DefaultHttpHandler)
{
return(_noInjection);
}
else
{
var handlerType = handler.GetType();
return(GetInjectionBehaviourForHandlerType(handlerType));
}
}
/// <summary>
/// Map request handler to context
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void OnPostMapRequestHandler(object sender, EventArgs e)
{
HttpContext context = ((HttpApplication)sender).Context;
IHttpHandler handler = context.CurrentHandler;
if (handler != null)
{
lock (_handlersLock) {
// Get code behind type
Type handlerType = handler.GetType();
// If handler not known map to context
if (!_handlerTypes.Contains(handlerType))
{
MapHandlerContext(handlerType);
_handlerTypes.Add(handlerType);
}
}
}
}
private static Assembly GetWebApplicationAssembly(HttpContext context)
{
ChoGuard.ArgumentNotNull(context, "context");
IHttpHandler handler = context.CurrentHandler;
if (handler == null)
{
return(null);
}
Type type = handler.GetType();
while (type != null && type != typeof(object) && type.Namespace == AspNetNamespace)
{
type = type.BaseType;
}
return(type.Assembly);
}
private void ExecuteInternal(IHttpHandler handler, TextWriter writer, bool preserveForm, bool setPreviousPage, VirtualPath path, VirtualPath filePath, string physPath, Exception error, string queryStringOverride)
{
if (handler == null)
{
throw new ArgumentNullException("handler");
}
HttpRequest request = this._context.Request;
HttpResponse response = this._context.Response;
HttpApplication applicationInstance = this._context.ApplicationInstance;
HttpValueCollection form = null;
VirtualPath path2 = null;
string queryStringText = null;
TextWriter writer2 = null;
AspNetSynchronizationContext syncContext = null;
this.VerifyTransactionFlow(handler);
this._context.PushTraceContext();
this._context.SetCurrentHandler(handler);
bool enabled = this._context.SyncContext.Enabled;
this._context.SyncContext.Disable();
try
{
try
{
this._context.ServerExecuteDepth++;
path2 = request.SwitchCurrentExecutionFilePath(filePath);
if (!preserveForm)
{
form = request.SwitchForm(new HttpValueCollection());
if (queryStringOverride == null)
{
queryStringOverride = string.Empty;
}
}
if (queryStringOverride != null)
{
queryStringText = request.QueryStringText;
request.QueryStringText = queryStringOverride;
}
if (writer != null)
{
writer2 = response.SwitchWriter(writer);
}
Page page = handler as Page;
if (page != null)
{
if (setPreviousPage)
{
page.SetPreviousPage(this._context.PreviousHandler as Page);
}
Page page2 = this._context.Handler as Page;
if ((page2 != null) && page2.SmartNavigation)
{
page.SmartNavigation = true;
}
if (page is IHttpAsyncHandler)
{
syncContext = this._context.InstallNewAspNetSynchronizationContext();
}
}
if (((handler is StaticFileHandler) || (handler is DefaultHttpHandler)) && !DefaultHttpHandler.IsClassicAspRequest(filePath.VirtualPathString))
{
try
{
response.WriteFile(physPath);
}
catch
{
error = new HttpException(0x194, string.Empty);
}
}
else if (!(handler is Page))
{
error = new HttpException(0x194, string.Empty);
}
else
{
if (handler is IHttpAsyncHandler)
{
bool isInCancellablePeriod = this._context.IsInCancellablePeriod;
if (isInCancellablePeriod)
{
this._context.EndCancellablePeriod();
}
try
{
IHttpAsyncHandler handler2 = (IHttpAsyncHandler) handler;
IAsyncResult result = handler2.BeginProcessRequest(this._context, null, null);
if (!result.IsCompleted)
{
bool flag3 = false;
try
{
try
{
}
finally
{
Monitor.Exit(applicationInstance);
flag3 = true;
}
WaitHandle asyncWaitHandle = result.AsyncWaitHandle;
if (asyncWaitHandle == null)
{
goto Label_0210;
}
asyncWaitHandle.WaitOne();
goto Label_0226;
Label_020A:
Thread.Sleep(1);
Label_0210:
if (!result.IsCompleted)
{
goto Label_020A;
}
}
finally
{
if (flag3)
{
Monitor.Enter(applicationInstance);
}
}
}
Label_0226:
try
{
handler2.EndProcessRequest(result);
}
catch (Exception exception)
{
error = exception;
}
goto Label_0306;
}
finally
{
if (isInCancellablePeriod)
{
this._context.BeginCancellablePeriod();
}
}
}
using (new DisposableHttpContextWrapper(this._context))
{
try
{
handler.ProcessRequest(this._context);
}
catch (Exception exception2)
{
error = exception2;
}
}
}
}
finally
{
this._context.ServerExecuteDepth--;
this._context.RestoreCurrentHandler();
if (writer2 != null)
{
response.SwitchWriter(writer2);
}
if ((queryStringOverride != null) && (queryStringText != null))
{
request.QueryStringText = queryStringText;
}
if (form != null)
{
request.SwitchForm(form);
}
request.SwitchCurrentExecutionFilePath(path2);
if (syncContext != null)
{
this._context.RestoreSavedAspNetSynchronizationContext(syncContext);
}
if (enabled)
{
this._context.SyncContext.Enable();
}
this._context.PopTraceContext();
}
}
catch
{
throw;
}
Label_0306:
if (error == null)
{
return;
}
if ((error is HttpException) && (((HttpException) error).GetHttpCode() != 500))
{
error = null;
}
if (path != null)
{
throw new HttpException(System.Web.SR.GetString("Error_executing_child_request_for_path", new object[] { path }), error);
}
throw new HttpException(System.Web.SR.GetString("Error_executing_child_request_for_handler", new object[] { handler.GetType().ToString() }), error);
}
private void SetPropertyValue(IHttpHandler handler, object key, object value)
{
if (value == null) return;
String name = key.ToString();
Type type = handler.GetType();
Type valueType = value.GetType();
FieldInfo fieldInfo = type.GetField(name, PropertyBindingFlags);
if (fieldInfo != null)
{
if (fieldInfo.FieldType.IsAssignableFrom(valueType))
{
fieldInfo.SetValue(handler, value);
}
}
else
{
PropertyInfo propInfo = type.GetProperty(name, PropertyBindingFlags);
if (propInfo != null && (propInfo.CanWrite &&
(propInfo.PropertyType.IsAssignableFrom(valueType))))
{
propInfo.GetSetMethod().Invoke(handler, new object[] { value });
}
}
}
public void RemapHandler(IHttpHandler handler)
{
IIS7WorkerRequest request = this._wr as IIS7WorkerRequest;
if (request != null)
{
if (this._notificationContext.CurrentNotification >= RequestNotification.MapRequestHandler)
{
throw new InvalidOperationException(System.Web.SR.GetString("Invoke_before_pipeline_event", new object[] { "HttpContext.RemapHandler", "HttpApplication.MapRequestHandler" }));
}
string handlerType = null;
string handlerName = null;
if (handler != null)
{
Type type = handler.GetType();
handlerType = type.AssemblyQualifiedName;
handlerName = type.FullName;
}
request.SetRemapHandler(handlerType, handlerName);
}
this._remapHandler = handler;
}
public override void Execute(IHttpHandler handler, System.IO.TextWriter writer, bool preserveForm)
{
var requestContext = ((System.Web.Mvc.MvcHandler)handler.GetType().GetField("_httpHandler", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance).GetValue(handler)).RequestContext;
writer.Write(requestContext.RouteData.Values.ToQueryString());
}
/// <summary>
/// Checks whether or not handler is a transfer handler.
/// </summary>
/// <param name="handler">An instance of handler to validate.</param>
/// <returns>True if handler is a transfer handler, otherwise - False.</returns>
private bool IsHandlerToFilter(IHttpHandler handler)
{
if (handler != null)
{
var handlerName = handler.GetType().FullName;
foreach (var h in this.Handlers)
{
if (string.Equals(handlerName, h, StringComparison.Ordinal))
{
WebEventSource.Log.WebRequestFilteredOutByRequestHandler();
return true;
}
}
}
return false;
}
/// <devdoc>
/// <para>
/// Set custom mapping handler processing the request <see cref='System.Web.IHttpHandler'/>
/// </para>
/// </devdoc>
public void RemapHandler(IHttpHandler handler) {
EnsureHasNotTransitionedToWebSocket();
IIS7WorkerRequest wr = _wr as IIS7WorkerRequest;
if (wr != null) {
// Remap handler not allowed after ResolveRequestCache notification
if (_notificationContext.CurrentNotification >= RequestNotification.MapRequestHandler) {
throw new InvalidOperationException(SR.GetString(SR.Invoke_before_pipeline_event, "HttpContext.RemapHandler", "HttpApplication.MapRequestHandler"));
}
string handlerTypeName = null;
string handlerName = null;
if (handler != null) {
Type handlerType = handler.GetType();
handlerTypeName = handlerType.AssemblyQualifiedName;
handlerName = handlerType.FullName;
}
wr.SetRemapHandler(handlerTypeName, handlerName);
}
_remapHandler = handler;
}
/// <summary>
/// Internal for testability outside of a web application.
/// </summary>
/// <param name="handler"></param>
/// <returns>The injection behavior.</returns>
protected internal IInjectionBehavior GetInjectionBehavior(IHttpHandler handler)
{
if (handler == null)
throw new ArgumentNullException("handler");
if (handler is DefaultHttpHandler)
{
return _noInjection;
}
else
{
var handlerType = handler.GetType();
return GetInjectionBehaviorForHandlerType(handlerType);
}
}
private void ExecuteInternal(IHttpHandler handler, TextWriter writer, bool preserveForm, bool setPreviousPage,
VirtualPath path, VirtualPath filePath, string physPath, Exception error, string queryStringOverride) {
EnsureHasNotTransitionedToWebSocket();
if (handler == null)
throw new ArgumentNullException("handler");
HttpRequest request = _context.Request;
HttpResponse response = _context.Response;
HttpApplication app = _context.ApplicationInstance;
HttpValueCollection savedForm = null;
VirtualPath savedCurrentExecutionFilePath = null;
string savedQueryString = null;
TextWriter savedOutputWriter = null;
AspNetSynchronizationContextBase savedSyncContext = null;
// Transaction wouldn't flow into ASPCOMPAT mode -- need to report an error
VerifyTransactionFlow(handler);
// create new trace context
_context.PushTraceContext();
// set the new handler as the current handler
_context.SetCurrentHandler(handler);
// because we call this synchrnously async operations must be disabled
bool originalSyncContextWasEnabled = _context.SyncContext.Enabled;
_context.SyncContext.Disable();
// Execute the handler
try {
try {
_context.ServerExecuteDepth++;
savedCurrentExecutionFilePath = request.SwitchCurrentExecutionFilePath(filePath);
if (!preserveForm) {
savedForm = request.SwitchForm(new HttpValueCollection());
// Clear out the query string, but honor overrides
if (queryStringOverride == null)
queryStringOverride = String.Empty;
}
// override query string if requested
if (queryStringOverride != null) {
savedQueryString = request.QueryStringText;
request.QueryStringText = queryStringOverride;
}
// capture output if requested
if (writer != null)
savedOutputWriter = response.SwitchWriter(writer);
Page targetPage = handler as Page;
if (targetPage != null) {
if (setPreviousPage) {
// Set the previousPage of the new Page as the previous Page
targetPage.SetPreviousPage(_context.PreviousHandler as Page);
}
Page sourcePage = _context.Handler as Page;
#pragma warning disable 0618 // To avoid deprecation warning
// If the source page of the transfer has smart nav on,
// always do as if the destination has it too (ASURT 97732)
if (sourcePage != null && sourcePage.SmartNavigation)
targetPage.SmartNavigation = true;
#pragma warning restore 0618
// If the target page is async need to save/restore sync context
if (targetPage is IHttpAsyncHandler) {
savedSyncContext = _context.InstallNewAspNetSynchronizationContext();
}
}
if ((handler is StaticFileHandler || handler is DefaultHttpHandler) &&
!DefaultHttpHandler.IsClassicAspRequest(filePath.VirtualPathString)) {
// cannot apply static files handler directly
// -- it would dump the source of the current page
// instead just dump the file content into response
try {
response.WriteFile(physPath);
}
catch {
// hide the real error as it could be misleading
// in case of mismapped requests like /foo.asmx/bar
error = new HttpException(404, String.Empty);
}
}
else if (!(handler is Page)) {
// disallow anything but pages
error = new HttpException(404, String.Empty);
}
else if (handler is IHttpAsyncHandler) {
// Asynchronous handler
// suspend cancellable period (don't abort this thread while
// we wait for another to finish)
bool isCancellable = _context.IsInCancellablePeriod;
if (isCancellable)
_context.EndCancellablePeriod();
try {
IHttpAsyncHandler asyncHandler = (IHttpAsyncHandler)handler;
if (!AppSettings.UseTaskFriendlySynchronizationContext) {
// Legacy code path: behavior ASP.NET <= 4.0
IAsyncResult ar = asyncHandler.BeginProcessRequest(_context, null, null);
// wait for completion
if (!ar.IsCompleted) {
// suspend app lock while waiting
bool needToRelock = false;
try {
try { }
finally {
_context.SyncContext.DisassociateFromCurrentThread();
needToRelock = true;
}
WaitHandle h = ar.AsyncWaitHandle;
if (h != null) {
h.WaitOne();
}
else {
while (!ar.IsCompleted)
Thread.Sleep(1);
}
}
finally {
if (needToRelock) {
_context.SyncContext.AssociateWithCurrentThread();
}
}
}
// end the async operation (get error if any)
try {
asyncHandler.EndProcessRequest(ar);
}
catch (Exception e) {
error = e;
}
}
else {
// New code path: behavior ASP.NET >= 4.5
IAsyncResult ar;
bool blockedThread;
using (CountdownEvent countdownEvent = new CountdownEvent(1)) {
using (_context.SyncContext.AcquireThreadLock()) {
// Kick off the asynchronous operation
ar = asyncHandler.BeginProcessRequest(_context,
cb: _ => { countdownEvent.Signal(); },
extraData: null);
}
// The callback passed to BeginProcessRequest will signal the CountdownEvent.
// The Wait() method blocks until the callback executes; no-ops if the operation completed synchronously.
blockedThread = !countdownEvent.IsSet;
countdownEvent.Wait();
}
// end the async operation (get error if any)
try {
using (_context.SyncContext.AcquireThreadLock()) {
asyncHandler.EndProcessRequest(ar);
}
// If we blocked the thread, YSOD the request to display a diagnostic message.
if (blockedThread && !_context.SyncContext.AllowAsyncDuringSyncStages) {
throw new InvalidOperationException(SR.GetString(SR.Server_execute_blocked_on_async_handler));
}
}
catch (Exception e) {
error = e;
}
}
}
finally {
// resume cancelleable period
if (isCancellable)
_context.BeginCancellablePeriod();
}
}
else {
// Synchronous handler
using (new DisposableHttpContextWrapper(_context)) {
try {
handler.ProcessRequest(_context);
}
catch (Exception e) {
error = e;
}
}
}
}
finally {
_context.ServerExecuteDepth--;
// Restore the handlers;
_context.RestoreCurrentHandler();
// restore output writer
if (savedOutputWriter != null)
response.SwitchWriter(savedOutputWriter);
// restore overriden query string
if (queryStringOverride != null && savedQueryString != null)
request.QueryStringText = savedQueryString;
if (savedForm != null)
request.SwitchForm(savedForm);
request.SwitchCurrentExecutionFilePath(savedCurrentExecutionFilePath);
if (savedSyncContext != null) {
_context.RestoreSavedAspNetSynchronizationContext(savedSyncContext);
}
if (originalSyncContextWasEnabled) {
_context.SyncContext.Enable();
}
// restore trace context
_context.PopTraceContext();
}
}
catch { // Protect against exception filters
throw;
}
// Report any error
if (error != null) {
// suppress errors with HTTP codes (for child requests they mislead more than help)
if (error is HttpException && ((HttpException)error).GetHttpCode() != 500)
error = null;
if (path != null)
throw new HttpException(SR.GetString(SR.Error_executing_child_request_for_path, path), error);
throw new HttpException(SR.GetString(SR.Error_executing_child_request_for_handler, handler.GetType().ToString()), error);
}
}
