Adds Shibboleth single-sign-on support to SilverStripe
Extends the silverstripe-activedirectory module for SilverStripe 3 to provide Shibboleth specific bindings, and allow the silverstripe-activedirectory module to be used with a Shibboleth-backed identity provider (IdP).
See the silverstripe-activedirectory developer documentation for the majority of information on how to configure this module. Additional features specific to Shibboleth are noted below.
This module defines a sub-class of
SAMLConfiguration for the
SAMLConfService. If you want to extend it, make sure you extend
Some Shibboleth implementations will always present a transient NameID, meaning that it can't be used to identify the same user every time. If this is the case, check with the IdP vendor first - the best option is to have the NameID returned in a persistent format (see Shibboleth Name Identifiers documentation).
However, if changing this isn't possible, you can optionally specify an attribute that is returned in the SAML response to use instead as the 'NameID' (e.g. the unique value used to lookup a user).
Do this by adding the following to your YML configuration:
# The below will use the eduPersonPrincipalName attribute to determine the NameID # See a full list of oid -> 'friendly name' mappings here: https://incommon.org/community-practices-and-standards/object-identifier-registrations/ SAMLConfiguration: nameid_override_attribute: "urn:oid:184.108.40.206.4.1.59220.127.116.11.6"
By default, the Shibboleth module does not change how the NameID is compared to how the base module works (e.g. it will store the NameID in the
GUID column, and lookup existing members using that field). However, you can override this by providing a value for the
shib_unique_identifier_field config variable.
This may be useful in a situation where you are migrating from the old SilverStripe
auth_external module, using the Apache
mod_shib module (which populates
$_SERVER['REMOTE_USER'] by default).
SAMLConfiguration: shib_unique_identifier_field: Email
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