Merge pull request #3 from yp-engineering/attributes_extras

Update XML Service Response support for latest CAS SAML extra attributes.

The [specification][spec] for the SAML CAS response attributes has been changed such that the `cas:attributes` XML element no longer mentions the `cas:userAttributes` element. The contents of the `cas:userAttributes` element can now be located directly in the `cas:attributes` element.

[spec]: http://jasig.github.io/cas/4.1.x/protocol/CAS-Protocol-Specification.html#saml-cas-response-attributes

service_response.go

@@ -113,6 +113,12 @@ func ParseServiceResponse(data []byte) (*AuthenticationResponse, error) {
 				r.Attributes.Add(ea.XMLName.Local, strings.TrimSpace(ea.Value))
 			}
 		}
+
+		if a.ExtraAttributes != nil {
+			for _, ea := range a.ExtraAttributes {
+				r.Attributes.Add(ea.XMLName.Local, strings.TrimSpace(ea.Value))
+			}
+		}
 	}
 
 	for _, ea := range x.Success.ExtraAttributes {

service_response_test.go

@@ -182,6 +182,7 @@ func TestUnmarshalSuccessfulServiceResponseWithUserAttributesXmlAnyForm(t *testi
       <cas:memberOf>Group1</cas:memberOf>
       <cas:memberOf>Group2</cas:memberOf>
       <cas:memberOf>Group3</cas:memberOf>
+      <cas:reportsTo>theboss</cas:reportsTo>
       <cas:userAttributes>
         <cas:firstname>John</cas:firstname>
         <cas:lastname>Doe</cas:lastname>
@@ -208,8 +209,8 @@ func TestUnmarshalSuccessfulServiceResponseWithUserAttributesXmlAnyForm(t *testi
 		}
 	}
 
-	if len(sr.Attributes) != 5 {
-		t.Errorf("Expected Attributes to have 5 items, got %v: %v",
+	if len(sr.Attributes) != 6 {
+		t.Errorf("Expected Attributes to have 6 items, got %v: %v",
 			len(sr.Attributes), sr.Attributes)
 	}
 
@@ -233,6 +234,10 @@ func TestUnmarshalSuccessfulServiceResponseWithUserAttributesXmlAnyForm(t *testi
 		t.Errorf("Expected affiliation attribute to be <staff>, got <%v>", v)
 	}
 
+	if v := sr.Attributes.Get("reportsTo"); v != "theboss" {
+		t.Errorf("Expected reportsTo attribute to be <theboss>, got <%v>", v)
+	}
+
 	expectedAffiliations := []string{"staff", "faculty"}
 	if affiliations, ok := sr.Attributes["affiliation"]; ok {
 		for i, affiliation := range affiliations {

xml_service_response.go

@@ -43,6 +43,7 @@ type xmlAttributes struct {
 	IsFromNewLogin                         bool      `xml:"isFromNewLogin"`
 	MemberOf                               []string  `xml:"memberOf"`
 	UserAttributes                         *xmlUserAttributes
+	ExtraAttributes                        []*xmlAnyAttribute `xml:",any"`
 }
 
 type xmlUserAttributes struct {