diff options
Diffstat (limited to 'id.server/src/at/gv/egovernment/moa/id/auth/validator/IdentityLinkValidator.java')
| -rw-r--r-- | id.server/src/at/gv/egovernment/moa/id/auth/validator/IdentityLinkValidator.java | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/id.server/src/at/gv/egovernment/moa/id/auth/validator/IdentityLinkValidator.java b/id.server/src/at/gv/egovernment/moa/id/auth/validator/IdentityLinkValidator.java new file mode 100644 index 000000000..42e3e946f --- /dev/null +++ b/id.server/src/at/gv/egovernment/moa/id/auth/validator/IdentityLinkValidator.java @@ -0,0 +1,156 @@ +package at.gv.egovernment.moa.id.auth.validator; + +import org.w3c.dom.Element; +import org.w3c.dom.NodeList; + +import at.gv.egovernment.moa.id.auth.data.IdentityLink; +import at.gv.egovernment.moa.util.Constants; +import at.gv.egovernment.moa.util.XPathUtils; + +/** + * + * This class is used to validate an {@link IdentityLink} + * returned by the security layer + * + * @author Stefan Knirsch + * @version $Id$ + */ +public class IdentityLinkValidator implements Constants { + + // + // XPath namespace prefix shortcuts + // + /** Xpath prefix for reaching PersonData Namespaces */ + private static final String PDATA = PD_PREFIX + ":"; + /** Xpath prefix for reaching SAML Namespaces */ + private static final String SAML = SAML_PREFIX + ":"; + /** Xpath prefix for reaching XML-DSIG Namespaces */ + private static final String DSIG = DSIG_PREFIX + ":"; + /** Xpath prefix for reaching ECDSA Namespaces */ + private static final String ECDSA = ECDSA_PREFIX + ":"; + /** Xpath expression to the root element */ + private static final String ROOT = "/" + SAML + "Assertion/"; + /** Xpath expression to the SAML:SubjectConfirmationData element */ + private static final String SAML_SUBJECT_CONFIRMATION_DATA_XPATH = + ROOT + + SAML + + "AttributeStatement/" + + SAML + + "Subject/" + + SAML + + "SubjectConfirmation/" + + SAML + + "SubjectConfirmationData"; +/** Xpath expression to the PersonData:Person element */ + private static final String PERSON_XPATH = + SAML_SUBJECT_CONFIRMATION_DATA_XPATH + "/" + PDATA + "Person"; + /** Xpath expression to the SAML:Attribute element */ + private static final String ATTRIBUTE_XPATH = + ROOT + SAML + "AttributeStatement/" + SAML + "Attribute"; + /** Xpath expression to the SAML:AttributeName attribute */ + private static final String ATTRIBUTE_NAME_XPATH = + ROOT + SAML + "AttributeStatement/" + SAML + "Attribute/@AttributeName"; + /** Xpath expression to the SAML:AttributeNamespace attribute */ + private static final String ATTRIBUTE_NAMESPACE_XPATH = + ROOT + + SAML + + "AttributeStatement/" + + SAML + + "Attribute/@AttributeNamespace"; + /** Xpath expression to the SAML:AttributeValue element */ + private static final String ATTRIBUTE_VALUE_XPATH = + ROOT + + SAML + + "AttributeStatement/" + + SAML + + "Attribute/" + + SAML + + "AttributeValue"; + + /** Singleton instance. <code>null</code>, if none has been created. */ + private static IdentityLinkValidator instance; + + /** + * Constructor for a singleton IdentityLinkValidator. + * @return a new IdentityLinkValidator instance + * @throws ValidateException if no instance can be created + */ + public static synchronized IdentityLinkValidator getInstance() + throws ValidateException { + if (instance == null) { + instance = new IdentityLinkValidator(); + } + return instance; + } + + /** + * Method validate. Validates the {@link IdentityLink} + * @param identityLink The identityLink to validate + * @throws ValidateException on any validation error + */ + public void validate(IdentityLink identityLink) throws ValidateException { + + //Search the SAML:ASSERTION Object (A2.054) + if (identityLink.getSamlAssertion() == null) + throw new ValidateException("validator.00", null); + + // Check how many saml:Assertion/saml:AttributeStatement/ + // saml:Subject/ saml:SubjectConfirmation/ + // saml:SubjectConfirmationData/pr:Person of type + // PhysicalPersonType exist (A2.056) + NodeList nl = + XPathUtils.selectNodeList(identityLink.getSamlAssertion(), PERSON_XPATH); + // If we have just one Person-Element we don't need to check the attributes + int counterPhysicalPersonType = 0; + if (nl.getLength() > 1) + for (int i = 0; i < nl.getLength(); i++) { + String xsiType = + ((Element) nl.item(i)) + .getAttributeNodeNS( + "http://www.w3.org/2001/XMLSchema-instance", + "type") + .getNodeValue(); + // We have to check if xsiType contains "PhysicalPersonType" + // An equal-check will fail because of the Namespace-prefix of the attribute value + if (xsiType.indexOf("PhysicalPersonType") > -1) + counterPhysicalPersonType++; + } + if (counterPhysicalPersonType > 1) + throw new ValidateException("validator.01", null); + + //Check the SAML:ATTRIBUTES + nl = XPathUtils.selectNodeList(identityLink.getSamlAssertion(), ATTRIBUTE_XPATH); + for (int i = 0; i < nl.getLength(); i++) { + String attributeName = + XPathUtils.getAttributeValue( + (Element) nl.item(i), + "@AttributeName", + null); + String attributeNS = + XPathUtils.getAttributeValue( + (Element) nl.item(i), + "@AttributeNamespace", + null); + if (attributeName.equals("CitizenPublicKey")) { + if (attributeNS.equals("http://www.buergerkarte.at/namespaces/personenbindung/20020506#")) { + Element attributeValue = + (Element) XPathUtils.selectSingleNode((Element) nl.item(i),SAML + "AttributeValue/" + DSIG + "RSAKeyValue"); + if (attributeValue==null) + attributeValue = + (Element) XPathUtils.selectSingleNode((Element)nl.item(i), SAML + "AttributeValue/" + ECDSA + "ECDSAKeyValue"); + if (attributeValue == null) + throw new ValidateException("validator.02", null); + } + else + throw new ValidateException("validator.03", null); + } + else + throw new ValidateException("validator.04", null); + } + + //Check if dsig:Signature exists + Element dsigSignature = (Element) XPathUtils.selectSingleNode(identityLink.getSamlAssertion(),ROOT + DSIG + "Signature"); + if (dsigSignature==null) throw new ValidateException("validator.05", null); + } + +} |