public static bool TryExtract(BindingParameterCollection collection, out AuthenticationSchemes authenticationSchemes)
{
Fx.Assert(collection != null, "collection != null");
authenticationSchemes = AuthenticationSchemes.None;
AuthenticationSchemesBindingParameter instance = collection.Find <AuthenticationSchemesBindingParameter>();
if (instance != null)
{
authenticationSchemes = instance.AuthenticationSchemes;
return(true);
}
return(false);
}
internal static AuthenticationSchemes GetEffectiveAuthenticationSchemes(AuthenticationSchemes currentAuthenticationSchemes, BindingParameterCollection bindingParameters)
{
if (bindingParameters == null)
{
return(currentAuthenticationSchemes);
}
AuthenticationSchemes hostSupportedAuthenticationSchemes;
if (!AuthenticationSchemesBindingParameter.TryExtract(bindingParameters, out hostSupportedAuthenticationSchemes))
{
return(currentAuthenticationSchemes);
}
// TODO: Add logic for Metadata endpoints to inherit authentication scheme of host. This might not be necessary, needs more thought.
//if (currentAuthenticationSchemes == AuthenticationSchemes.None ||
// (AspNetEnvironment.Current.IsMetadataListener(bindingParameters) &&
// currentAuthenticationSchemes == AuthenticationSchemes.Anonymous &&
// hostSupportedAuthenticationSchemes.IsNotSet(AuthenticationSchemes.Anonymous)))
//{
// //Inherit authentication schemes from host.
// //This logic of inheriting from the host for anonymous MEX endpoints was previously implemented in HostedAspNetEnvironment.ValidateHttpSettings.
// //We moved it here to maintain the pre-multi-auth behavior. (see CSDMain 183553)
// if (!hostSupportedAuthenticationSchemes.IsSingleton() &&
// hostSupportedAuthenticationSchemes.IsSet(AuthenticationSchemes.Anonymous) &&
// AspNetEnvironment.Current.AspNetCompatibilityEnabled &&
// AspNetEnvironment.Current.IsSimpleApplicationHost &&
// AspNetEnvironment.Current.IsWindowsAuthenticationConfigured())
// {
// // Remove Anonymous if ASP.Net authentication mode is Windows (Asp.Net would not allow anonymous requests in this case anyway)
// hostSupportedAuthenticationSchemes ^= AuthenticationSchemes.Anonymous;
// }
// return hostSupportedAuthenticationSchemes;
//}
//else
//{
//build intersection between AuthenticationSchemes supported on the HttpTransportbidningELement and ServiceHost/IIS
return(currentAuthenticationSchemes & hostSupportedAuthenticationSchemes);
//}
}
