1 files changed, 162 insertions, 0 deletions
diff --git a/id/server/idserverlib/src/main/java/at/gv/egovernment/moa/id/protocols/pvp2x/verification/metadata/MetadataSignatureFilter.java b/id/server/idserverlib/src/main/java/at/gv/egovernment/moa/id/protocols/pvp2x/verification/metadata/MetadataSignatureFilter.java
new file mode 100644
index 000000000..0405fa114
--- /dev/null
+++ b/id/server/idserverlib/src/main/java/at/gv/egovernment/moa/id/protocols/pvp2x/verification/metadata/MetadataSignatureFilter.java
@@ -0,0 +1,162 @@
+/*******************************************************************************
+ * Copyright 2014 Federal Chancellery Austria
+ * MOA-ID has been developed in a cooperation between BRZ, the Federal
+ * Chancellery Austria - ICT staff unit, and Graz University of Technology.
+ *
+ * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
+ * the European Commission - subsequent versions of the EUPL (the "Licence");
+ * You may not use this work except in compliance with the Licence.
+ * You may obtain a copy of the Licence at:
+ * http://www.osor.eu/eupl/
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the Licence is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
+ *
+ * This product combines work with different licenses. See the "NOTICE" text
+ * file for details on the various modules and licenses.
+ * The "NOTICE" text file is part of the distribution. Any derivative works
+ * that you distribute must include a readable copy of the "NOTICE" text file.
+ *******************************************************************************/
+package at.gv.egovernment.moa.id.protocols.pvp2x.verification.metadata;
+
+import iaik.x509.X509Certificate;
+
+import java.security.cert.CertificateException;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+import org.opensaml.saml2.metadata.EntitiesDescriptor;
+import org.opensaml.saml2.metadata.EntityDescriptor;
+import org.opensaml.saml2.metadata.provider.FilterException;
+import org.opensaml.saml2.metadata.provider.MetadataFilter;
+import org.opensaml.xml.XMLObject;
+import org.opensaml.xml.security.x509.BasicX509Credential;
+
+import at.gv.egovernment.moa.id.auth.exception.MOAIDException;
+import at.gv.egovernment.moa.id.commons.db.ConfigurationDBUtils;
+import at.gv.egovernment.moa.id.protocols.pvp2x.exceptions.NoCredentialsException;
+import at.gv.egovernment.moa.id.protocols.pvp2x.verification.EntityVerifier;
+import at.gv.egovernment.moa.logging.Logger;
+
+public class MetadataSignatureFilter implements MetadataFilter {
+	
+	private String metadataURL;
+	private BasicX509Credential savedCredential;
+	
+	public MetadataSignatureFilter(String url, byte[] certificate) 
+			throws CertificateException {
+		this.metadataURL = url;
+		X509Certificate cert = new X509Certificate(certificate);
+		savedCredential = new BasicX509Credential();
+		savedCredential.setEntityCertificate(cert);
+	}
+	
+	public void processEntityDescriptorr(EntityDescriptor desc) throws MOAIDException {
+		
+//		String entityID = desc.getEntityID();
+		
+		EntityVerifier.verify(desc);
+	}
+	
+	public void processEntitiesDescriptor(EntitiesDescriptor desc) throws MOAIDException {
+		Iterator<EntitiesDescriptor> entID = desc.getEntitiesDescriptors().iterator();
+		
+		if(desc.getSignature() != null) {
+			EntityVerifier.verify(desc, this.savedCredential);
+		}
+		
+		while(entID.hasNext()) {
+			processEntitiesDescriptor(entID.next());
+		}
+				
+		Iterator<EntityDescriptor> entIT = desc.getEntityDescriptors().iterator();
+
+		List<EntityDescriptor> verifiedEntIT = new ArrayList<EntityDescriptor>();
+		
+		//check every Entity
+		
+		while(entIT.hasNext()) {
+			
+			EntityDescriptor entity = entIT.next();
+			
+			String entityID = entity.getEntityID();
+			
+			//CHECK if Entity also match MetaData signature.
+			/*This check is necessary to prepend declaration of counterfeit OA metadata!!*/
+			byte[] entityCert = EntityVerifier.fetchSavedCredential(entityID);
+			
+			if (entityCert != null) {
+			
+				X509Certificate cert;
+				try {
+					cert = new X509Certificate(entityCert);
+					BasicX509Credential entityCrendential = new BasicX509Credential();
+					entityCrendential.setEntityCertificate(cert);
+	
+					EntityVerifier.verify(desc, entityCrendential);
+					
+					//add entity to verified entity-list
+					verifiedEntIT.add(entity);
+					
+				} catch (Exception e) {
+
+					//remove entity of signature can not be verified.
+					Logger.info("Entity " + entityID + " is removed from metadata " 
+							+ desc.getName() + ". Entity verification error: " + e.getMessage());
+//					throw new MOAIDException("The App", null, e);
+				}
+				
+			} else {
+				//remove entity if it is not registrated as OA
+				Logger.info("Entity " + entityID + " is removed from metadata " 
+						+ desc.getName() + ". Entity is not registrated or no certificate is found!");				
+//				throw new NoCredentialsException("NO Certificate found for OA " + entityID);
+			}
+			
+			//TODO: insert to support signed Entity-Elements
+			//processEntityDescriptorr(entIT.next());
+		}		
+		
+		//set only verified entity elements
+		desc.getEntityDescriptors().clear();
+		desc.getEntityDescriptors().addAll(verifiedEntIT);
+	}
+	
+	public void doFilter(XMLObject metadata) throws FilterException {
+		try {
+			if (metadata instanceof EntitiesDescriptor) {
+				EntitiesDescriptor entitiesDescriptor = (EntitiesDescriptor) metadata;
+				if(entitiesDescriptor.getSignature() == null) {
+					throw new MOAIDException("Root element of metadata file has to be signed", null);
+				}
+				processEntitiesDescriptor(entitiesDescriptor);
+				
+				
+				if (entitiesDescriptor.getEntityDescriptors().size() == 0) {
+					throw new MOAIDException("No valid entity in metadata "
+							+ entitiesDescriptor.getName() + ". Metadata is not loaded.", null);
+				}
+				
+				
+			} else if (metadata instanceof EntityDescriptor) {
+				EntityDescriptor entityDescriptor = (EntityDescriptor) metadata;
+				processEntityDescriptorr(entityDescriptor);
+				
+			} else {
+				throw new MOAIDException("Invalid Metadata file Root element is no EntitiesDescriptor", null);
+			}
+			
+			ConfigurationDBUtils.closeSession();
+			
+			Logger.info("Metadata signature policy check done OK");
+		} catch (MOAIDException e) {
+			Logger.warn("Metadata signature policy check FAILED.", e);
+			throw new FilterException(e);
+		}
+	}
+
+}