diff options
Diffstat (limited to 'id/server/idserverlib/src/main/java/at/gv/egovernment/moa/id/auth/validator/CreateXMLSignatureResponseValidator.java')
-rw-r--r-- | id/server/idserverlib/src/main/java/at/gv/egovernment/moa/id/auth/validator/CreateXMLSignatureResponseValidator.java | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/id/server/idserverlib/src/main/java/at/gv/egovernment/moa/id/auth/validator/CreateXMLSignatureResponseValidator.java b/id/server/idserverlib/src/main/java/at/gv/egovernment/moa/id/auth/validator/CreateXMLSignatureResponseValidator.java new file mode 100644 index 000000000..e6c9f4bee --- /dev/null +++ b/id/server/idserverlib/src/main/java/at/gv/egovernment/moa/id/auth/validator/CreateXMLSignatureResponseValidator.java @@ -0,0 +1,274 @@ +package at.gv.egovernment.moa.id.auth.validator; + +import java.util.Iterator; +import java.util.List; + +import org.w3c.dom.Element; + +import at.gv.egovernment.moa.id.auth.builder.AuthenticationBlockAssertionBuilder; +import at.gv.egovernment.moa.id.auth.data.AuthenticationSession; +import at.gv.egovernment.moa.id.auth.data.CreateXMLSignatureResponse; +import at.gv.egovernment.moa.id.auth.data.ExtendedSAMLAttribute; +import at.gv.egovernment.moa.id.auth.data.IdentityLink; +import at.gv.egovernment.moa.id.auth.data.SAMLAttribute; +import at.gv.egovernment.moa.logging.Logger; +import at.gv.egovernment.moa.util.Constants; +import at.gv.egovernment.moa.util.StringUtils; +import at.gv.egovernment.moa.util.XPathUtils; + +/** + * + * This class is used to validate an {@link CreateXMLSignatureResponse} + * returned by the security layer. + * This class implements the Singleton pattern. + * @author Stefan Knirsch + * @version $Id$ + */ +public class CreateXMLSignatureResponseValidator { + + + /** Xpath expression to the dsig:Signature element */ + private static final String SIGNATURE_XPATH = Constants.DSIG_PREFIX + ":Signature"; + + + /** Singleton instance. <code>null</code>, if none has been created. */ + private static CreateXMLSignatureResponseValidator instance; + + /** + * Constructor for a singleton CreateXMLSignatureResponseValidator. + * @return an instance of CreateXMLSignatureResponseValidator + * @throws ValidateException if no instance can be created + */ + public static synchronized CreateXMLSignatureResponseValidator getInstance() + throws ValidateException { + if (instance == null) { + instance = new CreateXMLSignatureResponseValidator(); + } + return instance; + } + + + /** + * The Method validate is used for validating an explicit {@link CreateXMLSignatureResponse} + * @param createXMLSignatureResponse + * @param session + * @throws ValidateException + */ + public void validate(CreateXMLSignatureResponse createXMLSignatureResponse, AuthenticationSession session) + throws ValidateException { + + // A3.056: more then one /saml:Assertion/saml:AttributeStatement/saml:Subject/saml:NameIdentifier + + String gbTarget = session.getTarget(); + String oaURL = session.getPublicOAURLPrefix(); + boolean businessService = session.getBusinessService(); + + IdentityLink identityLink = session.getIdentityLink(); + + Element samlAssertion = createXMLSignatureResponse.getSamlAssertion(); + String issuer = samlAssertion.getAttribute("Issuer"); + if (issuer == null) { + // should not happen, because parser would dedect this + throw new ValidateException("validator.32", null); + } + String issueInstant = samlAssertion.getAttribute("IssueInstant"); + if (!issueInstant.equals(session.getIssueInstant())) { + throw new ValidateException("validator.39", new Object[] {issueInstant, session.getIssueInstant()}); + } + + String name = identityLink.getName(); + if (!issuer.equals(name)) { + throw new ValidateException("validator.33", new Object[] {issuer, name}); + } + + SAMLAttribute[] samlAttributes = createXMLSignatureResponse.getSamlAttributes(); + + boolean foundOA = false; + boolean foundGB = false; + boolean foundWBPK = false; + int offset = 0; + + // check number of SAML aatributes + List extendedSAMLAttributes = session.getExtendedSAMLAttributesAUTH(); + int extendedSAMLAttributesNum = 0; + if (extendedSAMLAttributes != null) { + extendedSAMLAttributesNum = extendedSAMLAttributes.size(); + } + int expectedSAMLAttributeNumber = + AuthenticationBlockAssertionBuilder.NUM_OF_SAML_ATTRIBUTES + extendedSAMLAttributesNum; + if (!session.getSAMLAttributeGebeORwbpk()) expectedSAMLAttributeNumber--; + int actualSAMLAttributeNumber = samlAttributes.length; + if (actualSAMLAttributeNumber != expectedSAMLAttributeNumber) { + Logger.error("Wrong number of SAML attributes in CreateXMLSignatureResponse: expected " + + expectedSAMLAttributeNumber + ", but was " + actualSAMLAttributeNumber); + throw new ValidateException( + "validator.36", + new Object[] {String.valueOf(actualSAMLAttributeNumber), String.valueOf(expectedSAMLAttributeNumber)}); + } + + SAMLAttribute samlAttribute; + if (session.getSAMLAttributeGebeORwbpk()) { + // check the first attribute ("Geschaeftsbereich" or "wbPK") + samlAttribute = samlAttributes[0]; + if (businessService) { + if (!samlAttribute.getName().equals("wbPK")) { + if (samlAttribute.getName().equals("Geschaeftsbereich")) { + throw new ValidateException("validator.26", null); + } else { + throw new ValidateException( + "validator.37", + new Object[] {samlAttribute.getName(), "wbPK", String.valueOf(1)}); + } + } + if (samlAttribute.getNamespace().equals("http://reference.e-government.gv.at/namespace/moa/20020822#")) { + foundWBPK = true; + try { + Element attrValue = (Element)samlAttribute.getValue(); + String value = ((Element)attrValue.getElementsByTagNameNS(Constants.PD_NS_URI, "Value").item(0)).getFirstChild().getNodeValue(); + String type = ((Element)attrValue.getElementsByTagNameNS(Constants.PD_NS_URI, "Type").item(0)).getFirstChild().getNodeValue(); + if (!value.equals(identityLink.getIdentificationValue())) { + throw new ValidateException("validator.28", null); + } + if (!type.equals(identityLink.getIdentificationType())) { + throw new ValidateException("validator.28", null); + } + } catch (Exception ex) { + throw new ValidateException("validator.29", null); + } + } else { + throw new ValidateException("validator.30", null); + } + } else { + if (!samlAttribute.getName().equals("Geschaeftsbereich")) { + if (samlAttribute.getName().equals("wbPK")) { + throw new ValidateException("validator.26", null); + } else { + throw new ValidateException( + "validator.37", + new Object[] {samlAttribute.getName(), "Geschaeftsbereich", String.valueOf(1)}); + } + } + if (samlAttribute.getNamespace().equals("http://reference.e-government.gv.at/namespace/moa/20020822#")) { + foundGB = true; + if (!gbTarget.equals((String)samlAttribute.getValue())) { + throw new ValidateException("validator.13", null); + } + } else { + throw new ValidateException("validator.12", null); + } + } + } else { + offset--; + } + + // check the second attribute (must be "OA") + samlAttribute = samlAttributes[1 + offset]; + if (!samlAttribute.getName().equals("OA")) { + throw new ValidateException( + "validator.37", + new Object[] {samlAttribute.getName(), "OA", String.valueOf(2)}); + } + if (samlAttribute.getNamespace().equals("http://reference.e-government.gv.at/namespace/moa/20020822#")) { + foundOA = true; + if (!oaURL.equals((String)samlAttribute.getValue())) { // CHECKS für die AttributeVALUES fehlen noch + throw new ValidateException("validator.16", new Object[] {":gefunden wurde '" + oaURL + "', erwartet wurde '" + samlAttribute.getValue()}); + } + } else { + throw new ValidateException("validator.15", null); + } + + // check the third attribute (must be "Geburtsdatum") + samlAttribute = samlAttributes[2 + offset]; + if (!samlAttribute.getName().equals("Geburtsdatum")) { + throw new ValidateException( + "validator.37", + new Object[] {samlAttribute.getName(), "Geburtsdatum", String.valueOf(3)}); + } + if (samlAttribute.getNamespace().equals("http://reference.e-government.gv.at/namespace/moa/20020822#")) { + String samlDateOfBirth = (String)samlAttribute.getValue(); + String dateOfBirth = identityLink.getDateOfBirth(); + if (!samlDateOfBirth.equals(dateOfBirth)) { + throw new ValidateException("validator.34", new Object[] {samlDateOfBirth, dateOfBirth}); + } + } else { + throw new ValidateException("validator.35", null); + } + + // now check the extended SAML attributes + int i = AuthenticationBlockAssertionBuilder.NUM_OF_SAML_ATTRIBUTES + offset; + if (extendedSAMLAttributes != null) { + Iterator it = extendedSAMLAttributes.iterator(); + while (it.hasNext()) { + ExtendedSAMLAttribute extendedSAMLAttribute = (ExtendedSAMLAttribute)it.next(); + samlAttribute = samlAttributes[i]; + String actualName = samlAttribute.getName(); + String expectedName = extendedSAMLAttribute.getName(); + if (!actualName.equals(expectedName)) { + throw new ValidateException( + "validator.38", + new Object[] {"Name", String.valueOf((i+1)), actualName, actualName, expectedName }); + } + String actualNamespace = samlAttribute.getNamespace(); + String expectedNamespace = extendedSAMLAttribute.getNameSpace(); + if (!actualNamespace.equals(expectedNamespace)) { + throw new ValidateException( + "validator.38", + new Object[] {"Namespace", String.valueOf((i+1)), actualName, actualNamespace, expectedNamespace, }); + } + Object expectedValue = extendedSAMLAttribute.getValue(); + Object actualValue = samlAttribute.getValue(); + try { + if (expectedValue instanceof String) { + // replace \r\n because text might be base64-encoded + String expValue = StringUtils.replaceAll((String)expectedValue,"\r",""); + expValue = StringUtils.replaceAll(expValue,"\n",""); + String actValue = StringUtils.replaceAll((String)actualValue,"\r",""); + actValue = StringUtils.replaceAll(actValue,"\n",""); + if (!expValue.equals(actValue)) { + throw new ValidateException( + "validator.38", + new Object[] {"Wert", String.valueOf((i+1)), actualName, actualValue, expectedValue }); + } + } else if (expectedValue instanceof Element) { + // only check the name of the element + String actualElementName = ((Element)actualValue).getNodeName(); + String expectedElementName = ((Element)expectedValue).getNodeName(); + if (!(expectedElementName.equals(actualElementName))){ + throw new ValidateException( + "validator.38", + new Object[] {"Wert", String.valueOf((i+1)), actualName, actualElementName, expectedElementName}); + } + } else { + // should not happen + throw new ValidateException( + "validator.38", + new Object[] {"Typ", String.valueOf((i+1)), expectedName, "java.lang.String oder org.wrc.dom.Element", expectedValue.getClass().getName()}); + } + } catch (ClassCastException e) { + throw new ValidateException( + "validator.38", + new Object[] {"Typ", String.valueOf((i+1)), expectedName, expectedValue.getClass().getName(), actualValue.getClass().getName()}); + } + i++; + } + } + + + if (!foundOA) throw new ValidateException("validator.14", null); + if (businessService) { + if (session.getSAMLAttributeGebeORwbpk() && !foundWBPK) throw new ValidateException("validator.31", null); + } else { + if (!foundGB) throw new ValidateException("validator.11", null); + } + + //Check if dsig:Signature exists +// NodeList nl = createXMLSignatureResponse.getSamlAssertion().getElementsByTagNameNS(Constants.DSIG_NS_URI, "Signature"); +// if (nl.getLength() != 1) { +// throw new ValidateException("validator.05", null); +// } + Element dsigSignature = (Element) XPathUtils.selectSingleNode(samlAssertion, SIGNATURE_XPATH); + if (dsigSignature == null) { + throw new ValidateException("validator.05", new Object[] {"im AUTHBlock"}) ; + } + } +} |