Impersonate User In WCF From Multiple Callers?
Nov 26, 2010
I'm using WCF services ensuring that UserName/Password must be provided for each request. I need use same service from many clients, but I need impersonate the call to access the appropriate resources for each client. When I call the service directly from the client there is no problem, because I use for each client a pair UserName/Password defined in theirs web.config. The problem came when I need to call a second Web service from a call to the first-one using the same identity. This second Web service requires UserName/Password, but I only know who is the caller (UserName) but not the password.
How I can impersonate this second call without knowing the password for the corresponding username?
EDIT: The app (Web App and Services) is running in a shared hosting environment where I can't use Windows Authentication to configure Kerberos for Delegation. I have defined a UserNameValidator to process on each call the pair UserName/Password against a custom SQLServer database. Moreover, the intended customers of this app will use it from Internet, without requiring a windows account, that is because I need a more flexible, SQL-based, authentication schema.
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