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authormcentner <mcentner@d688527b-c9ab-4aba-bd8d-4036d912da1d>2007-08-08 07:25:32 +0000
committermcentner <mcentner@d688527b-c9ab-4aba-bd8d-4036d912da1d>2007-08-08 07:25:32 +0000
commit43e57a42832ea8b4ceb0317f3c9028a4174ffa7b (patch)
treef5ed9074b8d7b89b2dd5b22d326f63be103e7551 /id/server/doc/moa_id/examples/LoginServletExample.txt
parent10889e9dea2cc2f70b475e6ff7af37fdba1621d9 (diff)
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Adapted project directory structure to suit the new maven based build process.
git-svn-id: https://joinup.ec.europa.eu/svn/moa-idspss/trunk@909 d688527b-c9ab-4aba-bd8d-4036d912da1d
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+import java.io.IOException;
+import java.util.Vector;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+import javax.xml.namespace.QName;
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.rpc.Call;
+import javax.xml.rpc.Service;
+import javax.xml.rpc.ServiceFactory;
+
+import org.apache.axis.message.SOAPBodyElement;
+import org.apache.xml.serialize.LineSeparator;
+import org.apache.xml.serialize.OutputFormat;
+import org.apache.xml.serialize.XMLSerializer;
+import org.jaxen.JaxenException;
+import org.jaxen.SimpleNamespaceContext;
+import org.jaxen.dom.DOMXPath;
+import org.w3c.dom.Attr;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+
+/**
+ * Beispiel für ein Login-Servlet, das von MOA-ID-AUTH über einen Redirect aufgerufen wird.
+ * Es werden demonstriert:
+ * - Parameterübergabe von MOA-ID-AUTH
+ * - Aufruf des MOA-ID-AUTH Web Service zum Abholen der Anmeldedaten über das Apache Axis Framework
+ * - Parsen der Anmeldedaten mittels der XPath Engine "Jaxen"
+ * - Speichern der Anmeldedaten in der HTTPSession
+ * - Redirect auf die eigentliche Startseite der OA
+ *
+ * @author Paul Ivancsics
+ */
+public class LoginServletExample extends HttpServlet {
+
+ // Web Service QName und Endpoint
+ private static final QName SERVICE_QNAME = new QName("GetAuthenticationData");
+ private static final String ENDPOINT =
+ "http://localhost:8080/moa-id-auth/services/GetAuthenticationData";
+ // NamespaceContext für Jaxen
+ private static SimpleNamespaceContext NS_CONTEXT;
+ static {
+ NS_CONTEXT = new SimpleNamespaceContext();
+ NS_CONTEXT.addNamespace("saml", "urn:oasis:names:tc:SAML:1.0:assertion");
+ NS_CONTEXT.addNamespace("samlp", "urn:oasis:names:tc:SAML:1.0:protocol");
+ NS_CONTEXT.addNamespace("pr", "http://reference.e-government.gv.at/namespace/persondata/20020228#");
+ }
+
+ /**
+ * Servlet wird von MOA-ID-AUTH nach erfolgter Authentisierung über ein Redirect aufgerufen.
+ */
+ protected void doGet(HttpServletRequest req, HttpServletResponse resp)
+ throws ServletException, IOException {
+
+ // Parameter "Target" und "SAMLArtifact" aus dem Redirect von MOA-ID-AUTH lesen
+ String target = req.getParameter("Target");
+ String samlArtifact = req.getParameter("SAMLArtifact");
+
+ try {
+ // DOMBuilder instanzieren
+ DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
+ factory.setNamespaceAware(true);
+ DocumentBuilder builder = factory.newDocumentBuilder();
+
+ // <samlp:Request> zusammenstellen und in einen DOM-Baum umwandeln
+ String samlRequest =
+ "<?xml version=\"1.0\" encoding=\"UTF-8\"?><samlp:Request IssueInstant=\"2003-01-01T00:00:00+02:00\" MajorVersion=\"1\" MinorVersion=\"0\" RequestID=\"12345678901234567890\" xmlns:samlp=\"urn:oasis:names:tc:SAML:1.0:protocol\"><samlp:AssertionArtifact>"
+ + samlArtifact
+ + "</samlp:AssertionArtifact></samlp:Request>";
+ Document root_request = builder.parse(new ByteArrayInputStream(samlRequest.getBytes()));
+
+ // Neues SOAPBodyElement anlegen und mit dem DOM-Baum füllen
+ SOAPBodyElement body = new SOAPBodyElement(root_request.getDocumentElement());
+ SOAPBodyElement[] params = new SOAPBodyElement[] { body };
+
+ // AXIS-Service für Aufruf von MOA-ID-AUTH instanzieren
+ Service service = ServiceFactory.newInstance().createService(SERVICE_QNAME);
+
+ // Axis-Call erzeugen und mit Endpoint verknüpfen
+ Call call = service.createCall();
+ call.setTargetEndpointAddress(ENDPOINT);
+
+ // Call aufrufen und die Antwort speichern
+ System.out.println("Calling MOA-ID-AUTH ...");
+ Vector responses = (Vector) call.invoke(params);
+
+ // erstes BodyElement auslesen
+ SOAPBodyElement response = (SOAPBodyElement) responses.get(0);
+
+ // <samlp:Response> als DOM-Baum holen
+ Document responseDocument = response.getAsDocument();
+ Element samlResponse = responseDocument.getDocumentElement();
+
+ // <samlp:Response> auf System.out ausgeben
+ System.out.println("Response received:");
+ OutputFormat format = new OutputFormat((Document) responseDocument);
+ format.setLineSeparator(LineSeparator.Windows);
+ format.setIndenting(true);
+ format.setLineWidth(0);
+ XMLSerializer serializer = new XMLSerializer(System.out, format);
+ serializer.asDOMSerializer();
+ serializer.serialize(responseDocument);
+
+ // <samlp:StatusCode> auslesen
+ Attr statusCodeAttr = (Attr)getNode(samlResponse, "/samlp:Response/samlp:Status/samlp:StatusCode/@Value");
+ String samlStatusCode = statusCodeAttr.getValue();
+ System.out.println("StatusCode: " + samlStatusCode);
+
+ // <saml:Assertion> auslesen
+ if ("samlp:Success".equals(samlStatusCode)) {
+ Element samlAssertion = (Element)getNode(samlResponse, "/samlp:Response/saml:Assertion");
+
+ // FamilyName aus der <saml:Assertion> parsen
+ Node familyNameNode = getNode(samlAssertion, "//saml:AttributeStatement/saml:Attribute[@AttributeName=\"PersonData\"]/saml:AttributeValue/pr:Person/pr:Name/pr:FamilyName");
+ String familyName = getText(familyNameNode);
+ System.out.println("Family name: " + familyName);
+
+ // weitere Anmeldedaten aus der <saml:Assertion> parsen
+ // ...
+
+ // Anmeldedaten und Target in der HTTPSession speichern
+ HttpSession session = req.getSession();
+ session.setAttribute("UserFamilyName", familyName);
+ session.setAttribute("Geschaeftsbereich", target);
+
+ // weitere Anmeldedaten in der HTTPSession speichern
+ // ...
+
+ // Redirect auf die eigentliche Startseite
+ resp.sendRedirect("/index.jsp");
+ }
+ }
+ catch (Exception ex) {
+ ex.printStackTrace();
+ }
+ }
+ /** Returns the first node matching an XPath expression. */
+ private static Node getNode(Node contextNode, String xpathExpression) throws JaxenException {
+ DOMXPath xpath = new DOMXPath(xpathExpression);
+ xpath.setNamespaceContext(NS_CONTEXT);
+ return (Node) xpath.selectSingleNode(contextNode);
+ }
+ /** Returns the text that a node contains. */
+ public static String getText(Node node) {
+ if (!node.hasChildNodes()) {
+ return "";
+ }
+
+ StringBuffer result = new StringBuffer();
+ NodeList list = node.getChildNodes();
+ for (int i = 0; i < list.getLength(); i++) {
+ Node subnode = list.item(i);
+ if (subnode.getNodeType() == Node.TEXT_NODE) {
+ result.append(subnode.getNodeValue());
+ } else if (subnode.getNodeType() == Node.CDATA_SECTION_NODE) {
+ result.append(subnode.getNodeValue());
+ } else if (subnode.getNodeType() == Node.ENTITY_REFERENCE_NODE) {
+ // Recurse into the subtree for text
+ // (and ignore comments)
+ result.append(getText(subnode));
+ }
+ }
+ return result.toString();
+ }
+}