Musings on Data

A blog for data, apis, and all things Power BI by Lukasz Pawlowski.

May, 2009

  • Musings on Data

    InternalCatalogException, ASSERT, or NullReferenceException when using a Custom Security Extension

    We have seen multiple customers with issues when customizing the Security Extension Sample ( 2005 , 2008 ) that is available on . This is the sample that demonstrates how to create a Forms Authentication solution with SQL Server Reporting Services. There are two scenarios which are the primary sources of the problems: Scenario 1: “Anonymous” access Many custom security extension authors want to allow ‘anonymous’ access – where users do not need to login, or to allow all users some basic level of permission without needing to login explicitly. In order to do this, they change the sample code’s implementation of AuthenticationExtension.GetUserInfo to return a NULL for out IIdentity userIdentity. However, this approach...
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