MOSS / Sharepoint 2007 Custom Error Page and Access denied Page

ketaanhs — Mon, 16 Mar 2009 23:10:00 GMT

In case if you are interested in creating your own custom error page and custom access denied page instead of the out of the box MOSS / Sharepoint error page (generally the requirements in Publishing internet site). You can use the following HTTPModule (this is just a sample, you can change it to suit your requirements):

Note to have following Web.config Entries:

Following entries in the <appsettings> section in the web.config file:

Following entry is for a custom error page to be displayed for anonymous users, the key should be in the format: “CustomAnonCustErrPG-SiteCollectionURL” as shown below:

Following entry is for a custom error page to be displayed for authenticated users, the key should be in the format: “CustomAuthCustErrPG-SiteCollectionURL” as shown below:

Following entry is for a custom error page to be displayed for access denied errors, the key should be in the format: “CustomCustAcsDndPG -SiteCollectionURL” as shown below:

Create an entry on all the WFEs web-application specific web.config in the HTTPModules section, as follows just below the <HTTPModule> tag This should be the first entry in the HTTPModules section:

NOTE: Add your own Public key for PublicKeyToken per your snk used, replace the PUBLICKEYGUID with your own snk value

///////////////////////////////////////////////////////////////////////////////////////////////

// This is a HTTPModule used for redirecting the user to Home or Home Anon site depending on whether

// s/he is authenticated or anonymous.

// The module checks if the url is accessdenied.aspx and redirects the user to proper url.

////////////////////////////////////////////////////////////////////////////////////////////////

using System;

using System.Web;

using Microsoft.Practices.EnterpriseLibrary.ExceptionHandling;

using System.Configuration;

using Microsoft.SharePoint;

namespace XYZ.Sharepoint.HTTPModule.CustomErrorPages

{

public class CustomErrors : IHttpModule

{

#region -- Private fields --

private static AppSettingsReader m_Reader = new AppSettingsReader();

private static string m_SiteCollAnonCustomErrPG = "CustomAnonCustErrPG";

private static string m_SiteCollAuthCustomErrPG = "CustomAuthCustErrPG";

private static string m_SiteCollCustAcsDndPG = "CustomCustAcsDndPG";

#endregion

public void Init(HttpApplication context)

{

//Attaching event handlers for access denied and error respectively

//context.BeginRequest += new EventHandler(context_AcessDenied);

context.EndRequest += new EventHandler(context_AcessDenied);

context.Error += new EventHandler(context_Error);

}

void context_AcessDenied(object sender, EventArgs e)

{

try

{

HttpApplication httpApp = sender as HttpApplication;

HttpContext context = httpApp.Context;

string httpUrl = context.Request.Url.ToString();

string strCustomAcssDndURL = string.Empty;

string strSiteURL = string.Empty;

if (httpUrl.ToLower().Contains("/_layouts/accessdenied.aspx"))

{

SPSecurity.RunWithElevatedPrivileges(delegate()

{

using (SPSite site = new SPSite(httpUrl))

{

strSiteURL = site.Url;

}

});

HttpContext.Current.Server.ClearError();

HttpContext.Current.Response.Clear();

strCustomAcssDndURL = getAppSettingsValue(m_SiteCollCustAcsDndPG + "-" + strSiteURL);

HttpContext.Current.Response.Redirect(strCustomAcssDndURL, false);

}

catch (Exception ex)

{

//Do your exception handling

}

void context_Error(object sender, EventArgs e)

{

try

{

string strURL = string.Empty;

string strSiteURL = SPContext.Current.Site.Url;

Exception[] unhandledExceptions = HttpContext.Current.AllErrors;

//logging all the exceptions thru the Exception policy file

foreach (Exception ex in unhandledExceptions)

{

//Do your exception handling

}

HttpContext.Current.Server.ClearError();

HttpContext.Current.Response.Clear();

if (HttpContext.Current.User.Identity.IsAuthenticated)

{

strURL = getAppSettingsValue(m_SiteCollAuthCustomErrPG + "-" + strSiteURL);

HttpContext.Current.Response.Redirect(strURL, false);

}

else

{

strURL = getAppSettingsValue(m_SiteCollAnonCustomErrPG + "-" + strSiteURL);

HttpContext.Current.Response.Redirect(strURL, false);

}

catch (Exception ex)

{

//Do your exception handling

}

public void Dispose()

{

}

//Method used to read Appsettings value from web.config for the webapplication

private static string getAppSettingsValue(string sKey)

{

string sValue = null;

try

{

sValue = m_Reader.GetValue(sKey, typeof(string)) as string;

}

catch (Exception ex)

{

//Do your exception handling

}

return sValue;

}

Microsoft Tech Blogs : HTTPModule

MOSS / Sharepoint 2007 Custom Error Page and Access denied Page