package at.gv.egovernment.moa.id.auth.parser; import java.io.ByteArrayInputStream; import java.io.InputStream; import org.w3c.dom.Element; import at.gv.egovernment.moa.id.AuthenticationException; import at.gv.egovernment.moa.id.ParseException; import at.gv.egovernment.moa.id.auth.data.IdentityLink; import at.gv.egovernment.moa.util.Constants; import at.gv.egovernment.moa.util.DOMUtils; import at.gv.egovernment.moa.util.XPathUtils; /** * Parses an <InfoboxReadResponse>. * * @author Stefan Knirsch * @version $Id$ */ public class InfoboxReadResponseParser { // // // // XPath namespace prefix shortcuts // // // /** Xpath prefix for reaching SecurityLayer 1.0 Namespaces */ // private static final String SL10 = Constants.SL10_PREFIX + ":"; // /** Xpath prefix for reaching SAML Namespaces */ // private static final String SAML = Constants.SAML_PREFIX + ":"; // /** Xpath expression to the root element */ // private static final String ROOT = "/" + SL10 + "InfoboxReadResponse/"; // /** Xpath expression to the SAML:Assertion element */ // private static final String SAML_ASSERTION_XPATH = ROOT + SL10 + "BinaryFileData/" + SL10 + "XMLContent/" + SAML + "Assertion"; /** This is the root element of the XML-Document provided by the Security Layer Card*/ private Element infoBoxElem; /** * Constructor for InfoboxReadResponseParser. * A DOM-representation of the incoming String will be created * @param xmlResponse <InfoboxReadResponse> as String * @throws ParseException on any parsing error */ public InfoboxReadResponseParser(String xmlResponse) throws ParseException, AuthenticationException { ErrorResponseParser erp = new ErrorResponseParser(xmlResponse); if (erp.getErrorCode() != null) { throw new AuthenticationException("auth.08", new Object[] { erp.getErrorCode(), erp.getErrorInfo()}); } try { InputStream s = new ByteArrayInputStream(xmlResponse.getBytes("UTF-8")); infoBoxElem = DOMUtils.parseXmlValidating(s); } catch (Throwable t) { throw new ParseException("parser.01", new Object[] { t.toString()}, t); } } /** * Constructor for InfoboxReadResponseParser. * A DOM-representation of the incoming Inputstream will be created * @param xmlResponse <InfoboxReadResponse> as InputStream * @throws ParseException on any parsing error */ public InfoboxReadResponseParser(InputStream is) throws ParseException, AuthenticationException { ErrorResponseParser erp = new ErrorResponseParser(is); if (erp.getErrorCode() != null) { throw new AuthenticationException("auth.08", new Object[] { erp.getErrorCode(), erp.getErrorInfo()}); } try { infoBoxElem = DOMUtils.parseXmlValidating(is); } catch (Throwable t) { throw new ParseException("parser.01", new Object[] { t.toString()}, t); } } /** * Parses the embedded <saml:Assertion> element from <InfoboxReadResponse> * @return <saml:Assertion> as String * @throws ParseException on any parsing error */ public String parseSAMLAssertion() throws ParseException { try { String slPrefix = infoBoxElem.getPrefix(); StringBuffer sb = new StringBuffer("/"); sb.append(slPrefix); sb.append(":InfoboxReadResponse/"); sb.append(slPrefix); sb.append(":BinaryFileData/"); sb.append(slPrefix); sb.append(":XMLContent/"); sb.append(Constants.SAML_PREFIX); sb.append(":Assertion"); String samlAssertionXPath = sb.toString(); Element samlAssertion = (Element) XPathUtils.selectSingleNode(infoBoxElem, samlAssertionXPath); return DOMUtils.serializeNode(samlAssertion); } catch (Throwable t) { throw new ParseException("parser.01", new Object[] { t.toString()}, t); } } /** * Parses the identity link from the <saml:Assertion> * @return Identity link * @throws ParseException on any parsing error */ public IdentityLink parseIdentityLink() throws ParseException { String samlAssertionString = parseSAMLAssertion(); IdentityLinkAssertionParser ilParser = new IdentityLinkAssertionParser(samlAssertionString); return ilParser.parseIdentityLink(); } }