/// <summary>
/// Runs this instance.
/// </summary>
internal void Run()
{
if(p.Context.Trace.IsEnabled) p.Context.Trace.Write(Constant.AjaxID, "Begin ProcessRequest");
try
{
// If we are using the async handler we have to set the ASPNET username
// to have the same user rights for the created thread.
if(token != IntPtr.Zero)
winctx = System.Security.Principal.WindowsIdentity.Impersonate(token);
// We will check the custom attributes and try to invoke the method.
p.Context.Response.Expires = 0;
p.Context.Response.Cache.SetCacheability(System.Web.HttpCacheability.NoCache);
// TODO: check why Opera is not working with application/json;
// p.Context.Response.AddHeader("Content-Type", "application/json; charset=utf-8");
p.Context.Response.ContentType = p.ContentType;
p.Context.Response.ContentEncoding = System.Text.Encoding.UTF8;
if(!p.IsValidAjaxToken())
{
// TODO: maybe we want to throw a special exception type.
p.SerializeObject(new System.Security.SecurityException("The AjaxNet-Token is not valid."));
if(p.Context.Trace.IsEnabled) p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
return;
}
object[] po = null;
object res = null;
#region Retreive Parameters from the HTTP Request
try
{
// The IAjaxProcessor will read the values either form the
// request URL or the request input stream.
po = p.RetreiveParameters();
}
catch(Exception ex)
{
p.SerializeObject(ex);
if(p.Context.Trace.IsEnabled) p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
return;
}
#endregion
// Check if we have the same request already in our cache. The
// cacheKey will be the type and a hashcode from the parameter values.
string cacheKey = p.Type.FullName + "|" + p.GetType().Name + "|" + p.AjaxMethod.Name + "|" + p.GetHashCode();
if(p.Context.Cache[cacheKey] != null)
{
if(p.Context.Trace.IsEnabled) p.Context.Trace.Write(Constant.AjaxID, "Using cached result");
p.Context.Response.AddHeader("X-" + Constant.AjaxID + "-Cache", "server");
// Return the full output of the last cached call
p.Context.Response.Write(p.Context.Cache[cacheKey]);
if(p.Context.Trace.IsEnabled) p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
return;
}
#region Reflection part of Ajax.NET
try
{
if (p.Context.Trace.IsEnabled) p.Context.Trace.Write(Constant.AjaxID, "Invoking " + p.Type.FullName + "." + p.AjaxMethod.Name);
// If this is a static method we do not need to create an instance
// of this class. Some classes do not have a default constructor.
if (p.AjaxMethod.IsStatic)
{
try
{
res = p.Type.InvokeMember(
p.AjaxMethod.Name,
System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.InvokeMethod,
null, null, po);
}
catch(Exception ex)
{
if(ex.InnerException != null)
p.SerializeObject(ex.InnerException);
else
p.SerializeObject(ex);
if(p.Context.Trace.IsEnabled) p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
return;
}
}
else
{
// Create an instance of the class using the default constructor that will
// not need any argument. This can be a problem, but currently I have no
// idea on how to specify arguments for the constructor.
if(p.Context.Trace.IsEnabled) p.Context.Trace.Write(Constant.AjaxID, "Reflection Start");
try
{
object c = (object)Activator.CreateInstance(p.Type, new object[]{});
if(c != null)
{
// if(po == null)
// po = new object[p.Method.GetParameters().Length];
res = p.AjaxMethod.Invoke(c, po);
}
}
catch(Exception ex)
{
#if(WEBEVENT)
string errorText = string.Format(Constant.AjaxID + " Error", p.Context.User.Identity.Name);
#endif
if (ex.InnerException != null)
{
#if(WEBEVENT)
Management.WebAjaxErrorEvent ev = new Management.WebAjaxErrorEvent(errorText, p, po, WebEventCodes.WebExtendedBase + 100, ex.InnerException);
ev.Raise();
#endif
p.SerializeObject(ex.InnerException);
}
else
{
#if(WEBEVENT)
Management.WebAjaxErrorEvent ev = new Management.WebAjaxErrorEvent(errorText, p, po, WebEventCodes.WebExtendedBase + 101, ex);
ev.Raise();
#endif
p.SerializeObject(ex);
}
if(p.Context.Trace.IsEnabled) p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
return;
}
if(p.Context.Trace.IsEnabled) p.Context.Trace.Write(Constant.AjaxID, "Reflection End");
}
}
catch(Exception ex)
{
if(ex.InnerException != null)
p.SerializeObject(ex.InnerException);
else
p.SerializeObject(ex);
if(p.Context.Trace.IsEnabled) p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
return;
}
#endregion
try
{
if(res != null && res.GetType() == typeof(System.Xml.XmlDocument))
{
// If the return value is XmlDocument we will return it direct
// without any convertion. On the client-side function we can
// use .responseXML or .xml.
p.Context.Response.ContentType = "text/xml";
p.Context.Response.ContentEncoding = System.Text.Encoding.UTF8;
((System.Xml.XmlDocument)res).Save(p.Context.Response.OutputStream);
if(p.Context.Trace.IsEnabled) p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
return;
}
string result = null;;
System.Text.StringBuilder sb = new System.Text.StringBuilder();
try
{
result = p.SerializeObject(res);
}
catch(Exception ex)
{
p.SerializeObject(ex);
if(p.Context.Trace.IsEnabled) p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
return;
}
if(p.ServerCacheAttributes.Length > 0)
{
if (p.ServerCacheAttributes[0].IsCacheEnabled)
{
p.Context.Cache.Add(cacheKey, result, null, DateTime.Now.Add(p.ServerCacheAttributes[0].CacheDuration), System.Web.Caching.Cache.NoSlidingExpiration, System.Web.Caching.CacheItemPriority.Normal, null);
if (p.Context.Trace.IsEnabled) p.Context.Trace.Write(Constant.AjaxID, "Adding result to cache for " + p.ServerCacheAttributes[0].CacheDuration.TotalSeconds + " seconds (HashCode = " + p.GetHashCode().ToString() + ")");
}
}
if(p.Context.Trace.IsEnabled)
{
p.Context.Trace.Write(Constant.AjaxID, "Result (maybe encrypted): " + result);
p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
}
}
catch(Exception ex)
{
p.SerializeObject(ex);
if(p.Context.Trace.IsEnabled) p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
return;
}
}
catch(Exception ex)
{
p.SerializeObject(ex);
if(p.Context.Trace.IsEnabled) p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
return;
}
finally
{
if(token != IntPtr.Zero)
winctx.Undo();
}
}
/// <summary>
/// Enables processing of HTTP Web requests by a custom HttpHandler that implements the <see cref="T:System.Web.IHttpHandler"></see> interface.
/// </summary>
/// <param name="context">An <see cref="T:System.Web.HttpContext"></see> object that provides references to the intrinsic server objects (for example, Request, Response, Session, and Server) used to service HTTP requests.</param>
protected override string GenerateScripts(HttpContext context)
{
StringBuilder sb = new StringBuilder();
string className = filename;
if(Utility.Settings != null && Utility.Settings.UrlClassMappings.ContainsKey(filename))
{
className = Utility.Settings.UrlClassMappings[filename] as string;
if (context.Trace.IsEnabled) context.Trace.Write(Constant.AjaxID, "Url match to Type: " + className);
}
Type type = null;
try
{
type = Type.GetType(className, true);
}
catch (Exception ex)
{
if (context.Trace.IsEnabled) { context.Trace.Write(Constant.AjaxID, "Type not found: " + className); ex.ToString(); }
#if(WEBEVENT)
string errorText = string.Format(Constant.AjaxID + " Error", context.User.Identity.Name);
Management.WebAjaxErrorEvent ev = new Management.WebAjaxErrorEvent(errorText, WebEventCodes.WebExtendedBase + 201, ex);
ev.Raise();
#endif
return null;
}
// Ok, we do not have the javascript rendered, yet.
// Build the javascript source and save it to the current
// Application context.
// type handler url
string url = context.Request.ApplicationPath
+ (context.Request.ApplicationPath.EndsWith("/") ? "" : "/")
+ Utility.HandlerPath + "/" + AjaxNet.Utility.GetSessionUri() + filename + Utility.HandlerExtension;
// find all methods that are able to be used with AjaxNet
MethodInfo[] mi = type.GetMethods();
MethodInfo method;
#if(NET20)
List<MethodInfo> methods = new List<MethodInfo>();
#else
MethodInfo[] methods;
System.Collections.ArrayList methodList = new System.Collections.ArrayList();
int mc = 0;
#endif
for (int y = 0; y < mi.Length; y++)
{
method = mi[y];
if (!method.IsPublic)
continue;
AjaxMethodAttribute[] ma = (AjaxMethodAttribute[])method.GetCustomAttributes(typeof(AjaxMethodAttribute), true);
if (ma.Length == 0)
continue;
PrincipalPermissionAttribute[] ppa = (PrincipalPermissionAttribute[])method.GetCustomAttributes(typeof(PrincipalPermissionAttribute), true);
if (ppa.Length > 0)
{
bool permissionDenied = true;
for (int p = 0; p < ppa.Length && permissionDenied; p++)
{
#if(_____NET20)
if (Roles.Enabled)
{
try
{
if (!String.IsNullOrEmpty(ppa[p].Role) && !Roles.IsUserInRole(ppa[p].Role))
continue;
}
catch (Exception)
{
// Should we disable this AjaxMethod of there is an exception?
continue;
}
}
else
#endif
if (ppa[p].Role != null && ppa[p].Role.Length > 0 && context.User != null && context.User.Identity.IsAuthenticated && !context.User.IsInRole(ppa[p].Role))
continue;
permissionDenied = false;
}
if (permissionDenied)
continue;
}
#if(NET20)
methods.Add(method);
#else
//methods[mc++] = method;
methodList.Add(method);
#endif
}
#if(!NET20)
methods = (MethodInfo[])methodList.ToArray(typeof(MethodInfo));
#endif
// render client-side proxy file
TypeJavaScriptGenerator jsp = null;
if (Utility.Settings.TypeJavaScriptGenerator != null)
{
try
{
Type jspt = Type.GetType(Utility.Settings.TypeJavaScriptGenerator);
if (jspt != null && typeof(TypeJavaScriptGenerator).IsAssignableFrom(jspt))
{
jsp = (TypeJavaScriptGenerator)Activator.CreateInstance(jspt, new object[3] { type, url, sb });
}
}
catch (Exception)
{
}
}
if (jsp == null)
{
jsp = new TypeJavaScriptGenerator(type, url, sb);
}
jsp.RenderNamespace();
jsp.RenderClassBegin();
#if(NET20)
jsp.RenderMethods(methods.ToArray());
#else
jsp.RenderMethods(methods);
#endif
jsp.RenderClassEnd();
return sb.ToString();
}
/// <summary>
/// Enables processing of HTTP Web requests by a custom HttpHandler that implements the <see cref="T:System.Web.IHttpHandler"></see> interface.
/// </summary>
/// <param name="context">An <see cref="T:System.Web.HttpContext"></see> object that provides references to the intrinsic server objects (for example, Request, Response, Session, and Server) used to service HTTP requests.</param>
protected override string GenerateScripts(HttpContext context)
{
StringBuilder sb = new StringBuilder();
string className = filename;
if (Utility.Settings != null && Utility.Settings.UrlClassMappings.ContainsKey(filename))
{
className = Utility.Settings.UrlClassMappings[filename] as string;
if (context.Trace.IsEnabled)
{
context.Trace.Write(Constant.AjaxID, "Url match to Type: " + className);
}
}
Type type = null;
try
{
type = Type.GetType(className, true);
}
catch (Exception ex)
{
if (context.Trace.IsEnabled)
{
context.Trace.Write(Constant.AjaxID, "Type not found: " + className); ex.ToString();
}
#if (WEBEVENT)
string errorText = string.Format(Constant.AjaxID + " Error", context.User.Identity.Name);
Management.WebAjaxErrorEvent ev = new Management.WebAjaxErrorEvent(errorText, WebEventCodes.WebExtendedBase + 201, ex);
ev.Raise();
#endif
return(null);
}
// Ok, we do not have the javascript rendered, yet.
// Build the javascript source and save it to the current
// Application context.
// type handler url
string url = context.Request.ApplicationPath
+ (context.Request.ApplicationPath.EndsWith("/") ? "" : "/")
+ Utility.HandlerPath + "/" + AjaxNet.Utility.GetSessionUri() + filename + Utility.HandlerExtension;
// find all methods that are able to be used with AjaxNet
MethodInfo[] mi = type.GetMethods();
MethodInfo method;
#if (NET20)
List <MethodInfo> methods = new List <MethodInfo>();
#else
MethodInfo[] methods;
System.Collections.ArrayList methodList = new System.Collections.ArrayList();
int mc = 0;
#endif
for (int y = 0; y < mi.Length; y++)
{
method = mi[y];
if (!method.IsPublic)
{
continue;
}
AjaxMethodAttribute[] ma = (AjaxMethodAttribute[])method.GetCustomAttributes(typeof(AjaxMethodAttribute), true);
if (ma.Length == 0)
{
continue;
}
PrincipalPermissionAttribute[] ppa = (PrincipalPermissionAttribute[])method.GetCustomAttributes(typeof(PrincipalPermissionAttribute), true);
if (ppa.Length > 0)
{
bool permissionDenied = true;
for (int p = 0; p < ppa.Length && permissionDenied; p++)
{
#if (_____NET20)
if (Roles.Enabled)
{
try
{
if (!String.IsNullOrEmpty(ppa[p].Role) && !Roles.IsUserInRole(ppa[p].Role))
{
continue;
}
}
catch (Exception)
{
// Should we disable this AjaxMethod of there is an exception?
continue;
}
}
else
#endif
if (ppa[p].Role != null && ppa[p].Role.Length > 0 && context.User != null && context.User.Identity.IsAuthenticated && !context.User.IsInRole(ppa[p].Role))
{
continue;
}
permissionDenied = false;
}
if (permissionDenied)
{
continue;
}
}
#if (NET20)
methods.Add(method);
#else
//methods[mc++] = method;
methodList.Add(method);
#endif
}
#if (!NET20)
methods = (MethodInfo[])methodList.ToArray(typeof(MethodInfo));
#endif
// render client-side proxy file
TypeJavaScriptGenerator jsp = null;
if (Utility.Settings.TypeJavaScriptGenerator != null)
{
try
{
Type jspt = Type.GetType(Utility.Settings.TypeJavaScriptGenerator);
if (jspt != null && typeof(TypeJavaScriptGenerator).IsAssignableFrom(jspt))
{
jsp = (TypeJavaScriptGenerator)Activator.CreateInstance(jspt, new object[3] {
type, url, sb
});
}
}
catch (Exception)
{
}
}
if (jsp == null)
{
jsp = new TypeJavaScriptGenerator(type, url, sb);
}
jsp.RenderNamespace();
jsp.RenderClassBegin();
#if (NET20)
jsp.RenderMethods(methods.ToArray());
#else
jsp.RenderMethods(methods);
#endif
jsp.RenderClassEnd();
return(sb.ToString());
}
private IHttpHandler GetHandler(HttpContext context, string filename)
{
Type t = null;
Exception typeException = null;
string className = filename;
if (Utility.Settings != null && Utility.Settings.UrlClassMappings.ContainsKey(filename))
{
className = Utility.Settings.UrlClassMappings[filename] as string;
if (context.Trace.IsEnabled) context.Trace.Write(Constant.AjaxID, "Url match to Type: " + className);
}
try
{
t = Type.GetType(className, true);
}
catch (Exception ex)
{
if (context.Trace.IsEnabled) context.Trace.Write(Constant.AjaxID, "Type not found: " + className);
typeException = ex;
}
AjaxProcessor[] p = new AjaxProcessor[3];
p[0] = new XmlHttpRequestProcessor(context, t);
p[1] = new IFrameProcessor(context, t);
p[2] = new ExtJSProcessor(context, t);
for (int i = 0; i < p.Length; i++)
{
if (!p[i].CanHandleRequest) continue;
if (typeException != null)
{
#if(WEBEVENT)
string errorText = string.Format(Constant.AjaxID + " Error", context.User.Identity.Name);
Management.WebAjaxErrorEvent ev = new Management.WebAjaxErrorEvent(errorText, WebEventCodes.WebExtendedBase + 200, typeException);
ev.Raise();
#endif
p[i].SerializeObject(new NotSupportedException("This method is either not marked with an AjaxMethod or is not available."));
return null;
}
AjaxMethodAttribute[] ma = (AjaxMethodAttribute[])p[i].AjaxMethod.GetCustomAttributes(typeof(AjaxMethodAttribute), true);
bool useAsync = false;
HttpSessionStateRequirement sessionReq = HttpSessionStateRequirement.ReadWrite;
if (ma.Length > 0)
{
useAsync = ma[0].UseAsyncProcessing;
if (ma[0].RequireSessionState != HttpSessionStateRequirement.UseDefault)
sessionReq = ma[0].RequireSessionState;
}
switch (sessionReq)
{
case HttpSessionStateRequirement.Read:
if (!useAsync)
return new AjaxSyncHttpHandlerSessionReadOnly(p[i]);
else
return new AjaxAsyncHttpHandlerSessionReadOnly(p[i]);
case HttpSessionStateRequirement.ReadWrite:
if (!useAsync)
return new AjaxSyncHttpHandlerSession(p[i]);
else
return new AjaxAsyncHttpHandlerSession(p[i]);
case HttpSessionStateRequirement.None:
if (!useAsync)
return new AjaxSyncHttpHandler(p[i]);
else
return new AjaxAsyncHttpHandler(p[i]);
default:
if (!useAsync)
return new AjaxSyncHttpHandlerSession(p[i]);
else
return new AjaxAsyncHttpHandlerSession(p[i]);
}
}
return null;
}
/// <summary>
/// Runs this instance.
/// </summary>
internal void Run()
{
if (p.Context.Trace.IsEnabled)
{
p.Context.Trace.Write(Constant.AjaxID, "Begin ProcessRequest");
}
try
{
// If we are using the async handler we have to set the ASPNET username
// to have the same user rights for the created thread.
if (token != IntPtr.Zero)
{
winctx = System.Security.Principal.WindowsIdentity.Impersonate(token);
}
// We will check the custom attributes and try to invoke the method.
p.Context.Response.Expires = 0;
p.Context.Response.Cache.SetCacheability(System.Web.HttpCacheability.NoCache);
// TODO: check why Opera is not working with application/json;
// p.Context.Response.AddHeader("Content-Type", "application/json; charset=utf-8");
p.Context.Response.ContentType = p.ContentType;
p.Context.Response.ContentEncoding = System.Text.Encoding.UTF8;
if (!p.IsValidAjaxToken())
{
// TODO: maybe we want to throw a special exception type.
p.SerializeObject(new System.Security.SecurityException("The AjaxNet-Token is not valid."));
if (p.Context.Trace.IsEnabled)
{
p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
}
return;
}
object[] po = null;
object res = null;
#region Retreive Parameters from the HTTP Request
try
{
// The IAjaxProcessor will read the values either form the
// request URL or the request input stream.
po = p.RetreiveParameters();
}
catch (Exception ex)
{
p.SerializeObject(ex);
if (p.Context.Trace.IsEnabled)
{
p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
}
return;
}
#endregion
// Check if we have the same request already in our cache. The
// cacheKey will be the type and a hashcode from the parameter values.
string cacheKey = p.Type.FullName + "|" + p.GetType().Name + "|" + p.AjaxMethod.Name + "|" + p.GetHashCode();
if (p.Context.Cache[cacheKey] != null)
{
if (p.Context.Trace.IsEnabled)
{
p.Context.Trace.Write(Constant.AjaxID, "Using cached result");
}
p.Context.Response.AddHeader("X-" + Constant.AjaxID + "-Cache", "server");
// Return the full output of the last cached call
p.Context.Response.Write(p.Context.Cache[cacheKey]);
if (p.Context.Trace.IsEnabled)
{
p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
}
return;
}
#region Reflection part of Ajax.NET
try
{
if (p.Context.Trace.IsEnabled)
{
p.Context.Trace.Write(Constant.AjaxID, "Invoking " + p.Type.FullName + "." + p.AjaxMethod.Name);
}
// If this is a static method we do not need to create an instance
// of this class. Some classes do not have a default constructor.
if (p.AjaxMethod.IsStatic)
{
try
{
res = p.Type.InvokeMember(
p.AjaxMethod.Name,
System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.InvokeMethod,
null, null, po);
}
catch (Exception ex)
{
if (ex.InnerException != null)
{
p.SerializeObject(ex.InnerException);
}
else
{
p.SerializeObject(ex);
}
if (p.Context.Trace.IsEnabled)
{
p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
}
return;
}
}
else
{
// Create an instance of the class using the default constructor that will
// not need any argument. This can be a problem, but currently I have no
// idea on how to specify arguments for the constructor.
if (p.Context.Trace.IsEnabled)
{
p.Context.Trace.Write(Constant.AjaxID, "Reflection Start");
}
try
{
object c = (object)Activator.CreateInstance(p.Type, new object[] {});
if (c != null)
{
// if(po == null)
// po = new object[p.Method.GetParameters().Length];
res = p.AjaxMethod.Invoke(c, po);
}
}
catch (Exception ex)
{
#if (WEBEVENT)
string errorText = string.Format(Constant.AjaxID + " Error", p.Context.User.Identity.Name);
#endif
if (ex.InnerException != null)
{
#if (WEBEVENT)
Management.WebAjaxErrorEvent ev = new Management.WebAjaxErrorEvent(errorText, p, po, WebEventCodes.WebExtendedBase + 100, ex.InnerException);
ev.Raise();
#endif
p.SerializeObject(ex.InnerException);
}
else
{
#if (WEBEVENT)
Management.WebAjaxErrorEvent ev = new Management.WebAjaxErrorEvent(errorText, p, po, WebEventCodes.WebExtendedBase + 101, ex);
ev.Raise();
#endif
p.SerializeObject(ex);
}
if (p.Context.Trace.IsEnabled)
{
p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
}
return;
}
if (p.Context.Trace.IsEnabled)
{
p.Context.Trace.Write(Constant.AjaxID, "Reflection End");
}
}
}
catch (Exception ex)
{
if (ex.InnerException != null)
{
p.SerializeObject(ex.InnerException);
}
else
{
p.SerializeObject(ex);
}
if (p.Context.Trace.IsEnabled)
{
p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
}
return;
}
#endregion
try
{
if (res != null && res.GetType() == typeof(System.Xml.XmlDocument))
{
// If the return value is XmlDocument we will return it direct
// without any convertion. On the client-side function we can
// use .responseXML or .xml.
p.Context.Response.ContentType = "text/xml";
p.Context.Response.ContentEncoding = System.Text.Encoding.UTF8;
((System.Xml.XmlDocument)res).Save(p.Context.Response.OutputStream);
if (p.Context.Trace.IsEnabled)
{
p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
}
return;
}
string result = null;;
System.Text.StringBuilder sb = new System.Text.StringBuilder();
try
{
result = p.SerializeObject(res);
}
catch (Exception ex)
{
p.SerializeObject(ex);
if (p.Context.Trace.IsEnabled)
{
p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
}
return;
}
if (p.ServerCacheAttributes.Length > 0)
{
if (p.ServerCacheAttributes[0].IsCacheEnabled)
{
p.Context.Cache.Add(cacheKey, result, null, DateTime.Now.Add(p.ServerCacheAttributes[0].CacheDuration), System.Web.Caching.Cache.NoSlidingExpiration, System.Web.Caching.CacheItemPriority.Normal, null);
if (p.Context.Trace.IsEnabled)
{
p.Context.Trace.Write(Constant.AjaxID, "Adding result to cache for " + p.ServerCacheAttributes[0].CacheDuration.TotalSeconds + " seconds (HashCode = " + p.GetHashCode().ToString() + ")");
}
}
}
if (p.Context.Trace.IsEnabled)
{
p.Context.Trace.Write(Constant.AjaxID, "Result (maybe encrypted): " + result);
p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
}
}
catch (Exception ex)
{
p.SerializeObject(ex);
if (p.Context.Trace.IsEnabled)
{
p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
}
return;
}
}
catch (Exception ex)
{
p.SerializeObject(ex);
if (p.Context.Trace.IsEnabled)
{
p.Context.Trace.Write(Constant.AjaxID, "End ProcessRequest");
}
return;
}
finally
{
if (token != IntPtr.Zero)
{
winctx.Undo();
}
}
}
private IHttpHandler GetHandler(HttpContext context, string filename)
{
Type t = null;
Exception typeException = null;
string className = filename;
if (Utility.Settings != null && Utility.Settings.UrlClassMappings.ContainsKey(filename))
{
className = Utility.Settings.UrlClassMappings[filename] as string;
if (context.Trace.IsEnabled)
{
context.Trace.Write(Constant.AjaxID, "Url match to Type: " + className);
}
}
try
{
t = Type.GetType(className, true);
}
catch (Exception ex)
{
if (context.Trace.IsEnabled)
{
context.Trace.Write(Constant.AjaxID, "Type not found: " + className);
}
typeException = ex;
}
AjaxProcessor[] p = new AjaxProcessor[3];
p[0] = new XmlHttpRequestProcessor(context, t);
p[1] = new IFrameProcessor(context, t);
p[2] = new ExtJSProcessor(context, t);
for (int i = 0; i < p.Length; i++)
{
if (!p[i].CanHandleRequest)
{
continue;
}
if (typeException != null)
{
#if (WEBEVENT)
string errorText = string.Format(Constant.AjaxID + " Error", context.User.Identity.Name);
Management.WebAjaxErrorEvent ev = new Management.WebAjaxErrorEvent(errorText, WebEventCodes.WebExtendedBase + 200, typeException);
ev.Raise();
#endif
p[i].SerializeObject(new NotSupportedException("This method is either not marked with an AjaxMethod or is not available."));
return(null);
}
AjaxMethodAttribute[] ma = (AjaxMethodAttribute[])p[i].AjaxMethod.GetCustomAttributes(typeof(AjaxMethodAttribute), true);
bool useAsync = false;
HttpSessionStateRequirement sessionReq = HttpSessionStateRequirement.ReadWrite;
if (ma.Length > 0)
{
useAsync = ma[0].UseAsyncProcessing;
if (ma[0].RequireSessionState != HttpSessionStateRequirement.UseDefault)
{
sessionReq = ma[0].RequireSessionState;
}
}
switch (sessionReq)
{
case HttpSessionStateRequirement.Read:
if (!useAsync)
{
return(new AjaxSyncHttpHandlerSessionReadOnly(p[i]));
}
else
{
return(new AjaxAsyncHttpHandlerSessionReadOnly(p[i]));
}
case HttpSessionStateRequirement.ReadWrite:
if (!useAsync)
{
return(new AjaxSyncHttpHandlerSession(p[i]));
}
else
{
return(new AjaxAsyncHttpHandlerSession(p[i]));
}
case HttpSessionStateRequirement.None:
if (!useAsync)
{
return(new AjaxSyncHttpHandler(p[i]));
}
else
{
return(new AjaxAsyncHttpHandler(p[i]));
}
default:
if (!useAsync)
{
return(new AjaxSyncHttpHandlerSession(p[i]));
}
else
{
return(new AjaxAsyncHttpHandlerSession(p[i]));
}
}
}
return(null);
}
