Claims - WS Federation Protocol

Attribute filtering and release policies are defined per relying party. See this guide for more info.

The following standard claims are supported by CAS for release:

The attribute release policy assigned to relying parties and services is able to link a given standard claim and map it to an attribute that should be already available. The configuration looks as such:

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{
  "@class" : "org.apereo.cas.ws.idp.services.WSFederationRegisteredService",
  "serviceId" : "https://wsfed.example.org/.+",
  "realm" : "urn:wsfed:example:org:sampleapplication",
  "name" : "WSFED",
  "id" : 1,
  "attributeReleasePolicy" : {
    "@class" : "org.apereo.cas.ws.idp.services.WSFederationClaimsReleasePolicy",
    "allowedAttributes" : {
      "@class" : "java.util.TreeMap",
      "GIVEN_NAME" : "givenName"
    }
  }
}

The above snippet allows CAS to release the claim http://schemas.xmlsoap.org/ws/2005/05/identity/claims/givenname whose value is identified by the value of the givenName attribute that is already retrieved for the authenticated principal.

Attributes authorized and allowed for release by this policy may not necessarily be available as resolved principal attributes and can be resolved on the fly dynamically using the attribute definition store.

Inline Groovy Claims

Claims may produce their values from an inline Groovy script. As an example, the claim EMAIL_ADDRESS_2005 may be constructed as a dynamic attribute whose value is determined by the inline Groovy script attribute and the cn attribute:

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{
  "@class" : "org.apereo.cas.services.CasRegisteredService",
  "serviceId" : "sample",
  "name" : "sample",
  "id" : 300,
  "attributeReleasePolicy" : {
    "@class" : "org.apereo.cas.ws.idp.services.WSFederationClaimsReleasePolicy",
    "allowedAttributes" : {
      "@class" : "java.util.TreeMap",
      "EMAIL_ADDRESS_2005" : "groovy { return attributes['cn'].get(0) + '@example.org' }"
    }
  }
}

File-based Groovy Claims

Claims may produce their values from an external Groovy script. As an example, the claim EMAIL_ADDRESS_2005 may be constructed as a dynamic attribute whose value is determined by the Groovy script attribute and the cn attribute:

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{
  "@class" : "org.apereo.cas.services.CasRegisteredService",
  "serviceId" : "sample",
  "name" : "sample",
  "id" : 300,
  "attributeReleasePolicy" : {
    "@class" : "org.apereo.cas.ws.idp.services.WSFederationClaimsReleasePolicy",
    "allowedAttributes" : {
      "@class" : "java.util.TreeMap",
      "EMAIL_ADDRESS_2005" : "file:/path/to/script.groovy"
    }
  }
}

The configuration of this component qualifies to use the Spring Expression Language syntax. The script itself may have the following outline:

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def run(final Object... args) {
    def (attributes,logger) = args

    logger.info "Attributes currently resolved: ${attributes}"
    return [attributes["cn"][0] + "@example.org"]
}

Custom Claims

You may also decide to release non-standard claims as part of a custom namespace. For example, the below snippet allows CAS to release the claim https://github.com/apereo/cas/employeeNumber whose value is identified by the value of the personSecurityId attribute that is already retrieved for the authenticated principal.

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{
  "@class" : "org.apereo.cas.ws.idp.services.WSFederationRegisteredService",
  "serviceId" : "https://wsfed.example.org/.+",
  "realm" : "urn:wsfed:example:org:sampleapplication",
  "name" : "WSFED",
  "id" : 1,
  "attributeReleasePolicy" : {
    "@class" : "org.apereo.cas.ws.idp.services.CustomNamespaceWSFederationClaimsReleasePolicy",
    "namespace": "https://github.com/apereo/cas",
    "allowedAttributes" : {
      "@class" : "java.util.TreeMap",
      "employeeNumber" : "personSecurityId"
    }
  }
}

Attributes authorized and allowed for release by this policy may not necessarily be available as resolved principal attributes and can be resolved on the fly dynamically using the attribute definition store.