#407. Improve IdpMetadataParser raising an ArgumentError when parser method receive a metadata string with no IDPSSODescriptor element

Author: pitbulk

lib/onelogin/ruby-saml/idp_metadata_parser.rb

@@ -102,6 +102,10 @@ def parse_to_hash(idp_metadata, options = {})
         @options = options
         @entity_descriptor = nil
 
+        if idpsso_descriptor.nil?
+          raise ArgumentError.new("idp_metadata may contain an IDPSSODescriptor element")
+        end
+
         {
           :idp_entity_id => idp_entity_id,
           :name_identifier_format => idp_name_id_format,
@@ -164,6 +168,16 @@ def entity_descriptor_path
         path << "[@entityID=\"#{entity_id}\"]"
       end
 
+      def idpsso_descriptor
+        unless entity_descriptor.nil?
+          return REXML::XPath.first(
+            entity_descriptor,
+            "md:IDPSSODescriptor",
+            namespace
+          )
+        end
+      end 
+
       # @return [String|nil] IdP Entity ID value if exists
       #
       def idp_entity_id

test/idp_metadata_parser_test.rb

@@ -332,4 +332,15 @@ def initialize; end
       assert_equal ["AuthToken", "SSOStartPage"], @settings.idp_attribute_names
     end
   end
+
+  describe "parsing metadata with no IDPSSODescriptor element" do
+    before do
+      @idp_metadata_parser = OneLogin::RubySaml::IdpMetadataParser.new
+      @idp_metadata = no_idp_metadata_descriptor
+    end
+
+    it "raise due no IDPSSODescriptor element" do
+        assert_raises(ArgumentError) { @idp_metadata_parser.parse(@idp_metadata) }
+    end
+  end
 end

test/metadata/no_idp_descriptor.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<md:EntityDescriptor entityID="https://sp.example.com/sp.xml" validUntil="2014-04-17T18:02:33.910Z" xmlns:md="urn:oasis:names:tc:SAML:2.0:metadata">
+    <md:SPSSODescriptor protocolSupportEnumeration="urn:oasis:names:tc:SAML:1.1:protocol urn:oasis:names:tc:SAML:2.0:protocol" AuthnRequestsSigned="true">
+    <md:KeyDescriptor use="signing">
+      <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
+        <ds:X509Data>
+          <ds:X509Certificate>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</ds:X509Certificate>
+        </ds:X509Data>
+      </ds:KeyInfo>
+    </md:KeyDescriptor>
+    <md:KeyDescriptor use="encryption">
+      <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
+        <ds:X509Data>
+          <ds:X509Certificate>LS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0tLS0tCk1JSURxekNDQXhTZ0F3SUJBZ0lCQVRBTkJna3Foa2lHOXcwQkFRc0ZBRENCaGpFTE1Ba0dBMVVFQmhNQ1FWVXgKRERBS0JnTlZCQWdUQTA1VFZ6RVBNQTBHQTFVRUJ4TUdVM2xrYm1WNU1Rd3dDZ1lEVlFRS0RBTlFTVlF4Q1RBSApCZ05WQkFzTUFERVlNQllHQTFVRUF3d1BiR0YzY21WdVkyVndhWFF1WTI5dE1TVXdJd1lKS29aSWh2Y05BUWtCCkRCWnNZWGR5Wlc1alpTNXdhWFJBWjIxaGFXd3VZMjl0TUI0WERURXlNRFF4T1RJeU5UUXhPRm9YRFRNeU1EUXgKTkRJeU5UUXhPRm93Z1lZeEN6QUpCZ05WQkFZVEFrRlZNUXd3Q2dZRFZRUUlFd05PVTFjeER6QU5CZ05WQkFjVApCbE41Wkc1bGVURU1NQW9HQTFVRUNnd0RVRWxVTVFrd0J3WURWUVFMREFBeEdEQVdCZ05WQkFNTUQyeGhkM0psCmJtTmxjR2wwTG1OdmJURWxNQ01HQ1NxR1NJYjNEUUVKQVF3V2JHRjNjbVZ1WTJVdWNHbDBRR2R0WVdsc0xtTnYKYlRDQm56QU5CZ2txaGtpRzl3MEJBUUVGQUFPQmpRQXdnWWtDZ1lFQXFqaWUzUjJvaStwRGFldndJeXMvbWJVVApubkdsa3h0ZGlrcnExMXZleHd4SmlQTmhtaHFSVzNtVXVKRXpsbElkVkw2RW14R1lUcXBxZjkzSGxoa3NhZUowCjhVZ2pQOVVtTVlyaFZKdTFqY0ZXVjdmei9yKzIxL2F3VG5EVjlzTVlRcXVJUllZeTdiRzByMU9iaXdkb3ZudGsKN2dGSTA2WjB2WmFjREU1Ym9xVUNBd0VBQWFPQ0FTVXdnZ0VoTUFrR0ExVWRFd1FDTUFBd0N3WURWUjBQQkFRRApBZ1VnTUIwR0ExVWREZ1FXQkJTUk9OOEdKOG8rOGpnRnRqa3R3WmRxeDZCUnlUQVRCZ05WSFNVRUREQUtCZ2dyCkJnRUZCUWNEQVRBZEJnbGdoa2dCaHZoQ0FRMEVFQllPVkdWemRDQllOVEE1SUdObGNuUXdnYk1HQTFVZEl3U0IKcXpDQnFJQVVrVGpmQmlmS1B2STRCYlk1TGNHWGFzZWdVY21oZ1l5a2dZa3dnWVl4Q3pBSkJnTlZCQVlUQWtGVgpNUXd3Q2dZRFZRUUlFd05PVTFjeER6QU5CZ05WQkFjVEJsTjVaRzVsZVRFTU1Bb0dBMVVFQ2d3RFVFbFVNUWt3CkJ3WURWUVFMREFBeEdEQVdCZ05WQkFNTUQyeGhkM0psYm1ObGNHbDBMbU52YlRFbE1DTUdDU3FHU0liM0RRRUoKQVF3V2JHRjNjbVZ1WTJVdWNHbDBRR2R0WVdsc0xtTnZiWUlCQVRBTkJna3Foa2lHOXcwQkFRc0ZBQU9CZ1FDRQpUQWVKVERTQVc2ejFVRlRWN1FyZWg0VUxGT1JhajkrZUN1RjNLV0RIYyswSVFDajlyZG5ERzRRL3dmNy9yYVEwCkpuUFFDU0NkclBMSmV5b1BIN1FhVHdvYUY3ZHpWdzRMQ3N5TkpURld4NGNNNTBWdzZSNWZET2dpQzhic2ZmUzgKQkptb3VscnJaRE5OVmpHOG1XNmNMeHJZdlZRT3JSVmVjQ0ZJZ3NzQ2JBPT0KLS0tLS1FTkQgQ0VSVElGSUNBVEUtLS0tLQo=</ds:X509Certificate>
+        </ds:X509Data>
+      </ds:KeyInfo>
+    </md:KeyDescriptor>
+    <md:SingleLogoutService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Redirect" Location="https://sp.example.com/saml2-logout.php/default-sp"/>
+    <md:AssertionConsumerService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" Location="https://sp.example.com/saml2-acs.php/default-sp" index="0"/>    
+  </md:SPSSODescriptor>
+</md:EntityDescriptor>

test/test_helper.rb

@@ -162,6 +162,10 @@ def idp_metadata_descriptor3
     @idp_metadata_descriptor3 ||= File.read(File.join(File.dirname(__FILE__), 'metadata', 'idp_descriptor_3.xml'))
   end
 
+  def no_idp_metadata_descriptor
+    @no_idp_metadata_descriptor ||= File.read(File.join(File.dirname(__FILE__), 'metadata', 'no_idp_descriptor.xml'))
+  end
+
   def idp_metadata_multiple_descriptors
     @idp_metadata_multiple_descriptors ||= File.read(File.join(File.dirname(__FILE__), 'metadata', 'idp_multiple_descriptors.xml'))
   end