Certificados en Java (4). Recoger información del certificado del cliente

 Ver

https://stackoverflow.com/questions/9901248/reading-client-certificate-in-servlet

https://self-learning-java-tutorial.blogspot.com/2017/12/how-to-get-client-certificate-from.html

(este úlyimo no me funciona con vaadin)

Veamos el código en VAADIN

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package com.vaadin.starter.skeleton; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.security.cert.X509Certificate; import java.text.SimpleDateFormat; import java.util.Date; import com.vaadin.flow.component.Key; import com.vaadin.flow.component.UI; import com.vaadin.flow.component.button.Button; import com.vaadin.flow.component.button.ButtonVariant; import com.vaadin.flow.component.dependency.CssImport; import com.vaadin.flow.component.html.Anchor; import com.vaadin.flow.component.notification.Notification; import com.vaadin.flow.component.orderedlayout.VerticalLayout; import com.vaadin.flow.component.textfield.TextField; import com.vaadin.flow.router.Route; import com.vaadin.flow.server.PWA; import com.vaadin.flow.server.StreamRegistration; import com.vaadin.flow.server.StreamResource; import com.vaadin.flow.server.VaadinRequest; import com.vaadin.flow.server.VaadinService; import com.vaadin.flow.server.VaadinSession; /** * The main view contains a button and a click listener. */ @Route("") //@PWA(name = "Project Base for Vaadin", shortName = "Project Base") @CssImport("./styles/shared-styles.css") @CssImport(value = "./styles/vaadin-text-field-styles.css", themeFor = "vaadin-text-field") public class MainView extends VerticalLayout { private Anchor anchor; private TextField textField; X509Certificate cert=null; //private StreamResource resource=null; public MainView() { cert=this.extractCertificate(); if (cert!=null)Notification.show("Cert:"+ cert.getBasicConstraints() + "\n" + cert.getIssuerDN() + "\n" + cert.getNotAfter() + "\n" + cert.getNotBefore() + "\n" + cert.getSubjectDN() + "\n" ); // Use TextField for standard text input boolean isValidCert=true; if(cert!=null) { try { cert.checkValidity(); } catch (Exception e) { isValidCert=false; } } if (!isValidCert) Notification.show("Certificado no válido"); else { textField = new TextField("Your name"); //IMPORTANT !!!! ficar este codi anchor=new Anchor(); anchor.getStyle().set("display", "none"); anchor.setTarget("_blank"); //FI IMPORTANT !!!! ficar este codi // Button click listeners can be defined as lambda expressions GreetService greetService = new GreetService(); Button button = new Button("Say hello", e -> Notification.show(greetService.greet(textField.getValue()))); Button button1 = new Button("Download_I_abandona Pagina", event -> { boolean isCheckPassed = true; if (!isCheckPassed) { Notification.show("Unfortunately you can not download this file"); } else { final StreamResource resource = new StreamResource(textField.getValue(), //() -> new ByteArrayInputStream("foo".getBytes())); () -> { try { return new FileInputStream("C:/Myresources/"+textField.getValue()); } catch (FileNotFoundException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } return null; }); final StreamRegistration registration = VaadinSession.getCurrent().getResourceRegistry().registerResource(resource); UI.getCurrent().getPage().setLocation(registration.getResourceUri()); if (cert!=null)System.out.println(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()) +"<-->"+textField.getValue()+" -------> "+ cert.getSubjectDN()); } }); Button button2 = new Button("download_BO", event -> forceDownload()); // Theme variants give you predefined extra styles for components. // Example: Primary button is more prominent look. button.addThemeVariants(ButtonVariant.LUMO_PRIMARY); // You can specify keyboard shortcuts for buttons. // Example: Pressing enter in this view clicks the Button. button.addClickShortcut(Key.ENTER); // Use custom CSS classes to apply styling. This is defined in shared-styles.css. addClassName("centered-content"); add(textField, button, button1, button2, anchor); } } /* Este es el BO !!!!!*/ protected void forceDownload() { StreamResource resource= new StreamResource(textField.getValue(), () -> { try { return new FileInputStream("C:/MyResources/"+textField.getValue( ) ); } catch (FileNotFoundException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } return null; }); this.anchor.setHref(resource); // downloadWidget is an Anchor // //UI.getCurrent().getPage().executeJavaScript("$0.click();", this.downloadWidget.getElement()); UI.getCurrent().getPage().executeJs("$0.click();", anchor.getElement()); if (cert!=null)System.out.println(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()) +"<-->"+textField.getValue()+" -------> "+ cert.getSubjectDN()); } //protected X509Certificate extractCertificate(HttpServletRequest req) { protected X509Certificate extractCertificate() { VaadinRequest req= VaadinService.getCurrentRequest(); X509Certificate[] certs = (X509Certificate[]) req.getAttribute("javax.servlet.request.X509Certificate"); if (null != certs && certs.length > 0) { System.out.println("Cert:"+ certs[0].getBasicConstraints() + "\n" + certs[0].getIssuerDN() + "\n" + certs[0].getNotAfter() + "\n" + certs[0].getNotBefore() + "\n" + certs[0].getSubjectDN() + "\n" ); Notification.show("Cert:"+ certs[0].getBasicConstraints() + "\n" + certs[0].getIssuerDN() + "\n" + certs[0].getNotAfter() + "\n" + certs[0].getNotBefore() + "\n" + certs[0].getSubjectDN() + "\n" ); return certs[0]; } //throw new RuntimeException("No X.509 client certificate found in request"); return null; } }