1 files changed, 122 insertions, 0 deletions
diff --git a/id/moa-id-webgui/src/main/java/at/gv/egovernment/moa/id/config/webgui/validation/utils/MetaDataVerificationFilter.java b/id/moa-id-webgui/src/main/java/at/gv/egovernment/moa/id/config/webgui/validation/utils/MetaDataVerificationFilter.java
new file mode 100644
index 000000000..6ec48fa43
--- /dev/null
+++ b/id/moa-id-webgui/src/main/java/at/gv/egovernment/moa/id/config/webgui/validation/utils/MetaDataVerificationFilter.java
@@ -0,0 +1,122 @@
+/*******************************************************************************
+ * 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.config.webgui.validation.utils;
+
+import java.util.Iterator;
+
+import org.opensaml.common.SignableSAMLObject;
+import org.opensaml.saml2.metadata.EntitiesDescriptor;
+import org.opensaml.saml2.metadata.EntityDescriptor;
+import org.opensaml.saml2.metadata.provider.MetadataFilter;
+import org.opensaml.security.SAMLSignatureProfileValidator;
+import org.opensaml.xml.XMLObject;
+import org.opensaml.xml.security.credential.Credential;
+import org.opensaml.xml.security.x509.BasicX509Credential;
+import org.opensaml.xml.signature.SignatureValidator;
+import org.opensaml.xml.validation.ValidationException;
+
+import at.gv.egovernment.moa.id.config.webgui.exception.SignatureValidationException;
+import at.gv.egovernment.moa.logging.Logger;
+
+public class MetaDataVerificationFilter implements MetadataFilter {
+
+	BasicX509Credential credential;
+	
+	public MetaDataVerificationFilter(BasicX509Credential credential) {
+		this.credential = credential;
+	}
+	
+	
+	public void doFilter(XMLObject metadata) throws SignatureValidationException {
+		
+		if (metadata instanceof EntitiesDescriptor) {
+			EntitiesDescriptor entitiesDescriptor = (EntitiesDescriptor) metadata;
+			if(entitiesDescriptor.getSignature() == null) {
+				throw new SignatureValidationException("Root element of metadata file has to be signed");
+			}
+			try {
+				processEntitiesDescriptor(entitiesDescriptor);
+				
+			} catch (SignatureValidationException e) {
+				throw new SignatureValidationException("Invalid signature element in EntitiesDescriptor");
+			}
+			
+		} if (metadata instanceof EntityDescriptor) {									
+			try {
+				EntityDescriptor entity = (EntityDescriptor) metadata;
+				if (entity.getSignature() != null)
+					verify(entity, this.credential);
+				
+				else
+					throw new SignatureValidationException("Root element of metadata file has to be signed", null);
+				
+			} catch (SignatureValidationException e) {
+				throw new SignatureValidationException("Invalid signature element in EntityDescriptor", null);
+			}				
+		}
+	}
+	
+	private void processEntitiesDescriptor(EntitiesDescriptor desc) throws SignatureValidationException {
+		Iterator<EntitiesDescriptor> entID = desc.getEntitiesDescriptors().iterator();
+		
+		if(desc.getSignature() != null) {
+			verify(desc, this.credential);
+		}
+		
+		while(entID.hasNext()) {
+			processEntitiesDescriptor(entID.next());
+		}
+		
+		Iterator<EntityDescriptor> entIT = desc.getEntityDescriptors().iterator();
+		
+		while(entIT.hasNext()) {
+			EntityDescriptor entity = entIT.next();
+			if (entity.getSignature() != null)
+				verify(entity, this.credential);
+		}
+	}
+	
+	private void verify(SignableSAMLObject entityDescriptor, Credential cred)
+			throws SignatureValidationException {
+		if (entityDescriptor.getSignature() == null) {
+			throw new SignatureValidationException("PVP2X Metadata not signed");
+		}
+
+		try {
+			SAMLSignatureProfileValidator sigValidator = new SAMLSignatureProfileValidator();
+			sigValidator.validate(entityDescriptor.getSignature());
+		} catch (ValidationException e) {
+			Logger.error("Failed to validate Signature", e);
+			throw new SignatureValidationException("Failed to validate Signature", e);
+		}
+
+		SignatureValidator sigValidator = new SignatureValidator(cred);
+		try {
+			sigValidator.validate(entityDescriptor.getSignature());
+		} catch (ValidationException e) {
+			Logger.error("Failed to verfiy Signature", e);
+			throw new SignatureValidationException("Failed to verfiy Signature", e);
+			
+		}
+	}
+}