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Diffstat (limited to 'id/server/doc/moa_id/examples/LoginServletExample.txt')
| -rw-r--r-- | id/server/doc/moa_id/examples/LoginServletExample.txt | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/id/server/doc/moa_id/examples/LoginServletExample.txt b/id/server/doc/moa_id/examples/LoginServletExample.txt new file mode 100644 index 000000000..587ef5e97 --- /dev/null +++ b/id/server/doc/moa_id/examples/LoginServletExample.txt @@ -0,0 +1,171 @@ +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(); + } +} |