Examples of java.net.Authenticator

java.net.Authenticator
The class Authenticator represents an object that knows how to obtain authentication for a network connection. Usually, it will do this by prompting the user for information.
Applications use this class by overriding {@link #getPasswordAuthentication()} in a sub-class. This method willtypically use the various getXXX() accessor methods to get information about the entity requesting authentication. It must then acquire a username and password either by interacting with the user or through some other non-interactive means. The credentials are then returned as a {@link PasswordAuthentication} return value.
An instance of this concrete sub-class is then registered with the system by calling {@link #setDefault(Authenticator)}. When authentication is required, the system will invoke one of the requestPasswordAuthentication() methods which in turn will call the getPasswordAuthentication() method of the registered object.
All methods that request authentication have a default implementation that fails. @see java.net.Authenticator#setDefault(java.net.Authenticator) @see java.net.Authenticator#getPasswordAuthentication() @author Bill Foote @version 1.33, 11/17/05 @since 1.2

        final String authTestUrl = "http://localhost:" + server.getPort()
                + Support_HttpServer.AUTHTEST;


        // Authentication test
        // set up a very simple authenticator
        Authenticator.setDefault(new Authenticator() {
            public PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("test", "password"
                        .toCharArray());
            }
        });

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        }
    }


    public void testProxyAuthorization() throws Exception {
        // Set up test Authenticator
        Authenticator.setDefault(new Authenticator() {
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("user", "password"
                        .toCharArray());
            }

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    }
    
    public static synchronized void addAuthenticator() { 
        if (instance == null) {
            instance = new CXFAuthenticator();
            Authenticator wrapped = null;
            for (final Field f : Authenticator.class.getDeclaredFields()) {
                if (f.getType().equals(Authenticator.class)) {
                    ReflectionUtil.setAccessible(f);
                    try {
                        wrapped = (Authenticator)f.get(null);
                        if (wrapped != null 
                            && wrapped.getClass().getName().equals(ReferencingAuthenticator.class.getName())) {
                            Method m = wrapped.getClass().getMethod("check");
                            m.setAccessible(true);
                            m.invoke(wrapped);
                        }
                        wrapped = (Authenticator)f.get(null);
                    } catch (Exception e) {
                        //ignore
                    }
                }
            }
            
            try {
                ClassLoader loader = new URLClassLoader(new URL[0], ClassLoader.getSystemClassLoader());
                Method m = ClassLoader.class.getDeclaredMethod("defineClass", String.class, 
                                                               byte[].class, Integer.TYPE, Integer.TYPE);
                
                InputStream ins = ReferencingAuthenticator.class
                        .getResourceAsStream("ReferencingAuthenticator.class");
                byte b[] = IOUtils.readBytesFromStream(ins);
                
                ReflectionUtil.setAccessible(m).invoke(loader, ReferencingAuthenticator.class.getName(),
                                                       b, 0, b.length);
                Class<?> cls = loader.loadClass(ReferencingAuthenticator.class.getName());
                Authenticator auth = (Authenticator)cls.getConstructor(Authenticator.class, Authenticator.class)
                    .newInstance(instance, wrapped);
                
                Authenticator.setDefault(auth);
            } catch (Throwable t) {
                //ignore

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                }
                if (!StringUtils.isEmpty(proxy.getUsername()) 
                    && !StringUtils.isEmpty(proxy.getPassword())) {
                    final String authUser = proxy.getUsername();
                    final String authPassword = proxy.getPassword();
                    Authenticator.setDefault(new Authenticator() {
                        public PasswordAuthentication getPasswordAuthentication() {
                            return new PasswordAuthentication(authUser, authPassword.toCharArray());
                        }
                    });

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        + Support_HttpServer.AUTHTEST;


    // Authentication test
    try {
      // set up a very simple authenticator
      Authenticator.setDefault(new Authenticator() {
        public PasswordAuthentication getPasswordAuthentication() {
          return new PasswordAuthentication("test", "password"
              .toCharArray());
        }
      });

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            return url.openConnection();


        URLConnection con = url.openConnection(p.createProxy(url.getHost()));
        if(p.getUserName()!=null) {
          // Add an authenticator which provides the credentials for proxy authentication
            Authenticator.setDefault(new Authenticator() {
                @Override
                public PasswordAuthentication getPasswordAuthentication() {
                    if (getRequestorType()!=RequestorType.PROXY)    return null;
                    ProxyConfiguration p = Jenkins.getInstance().proxy;
                    return new PasswordAuthentication(p.getUserName(),

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            return new RetryableHttpStream(url);


        InputStream is = new RetryableHttpStream(url, p.createProxy(url.getHost()));
        if (p.getUserName() != null) {
            // Add an authenticator which provides the credentials for proxy authentication
            Authenticator.setDefault(new Authenticator() {


                @Override
                public PasswordAuthentication getPasswordAuthentication() {
                    if (getRequestorType() != RequestorType.PROXY) {
                        return null;

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    private void addProxySelector() {


        // Add authenticator with proxyUser and proxyPassword
        if (proxyUser != null && proxyPassword != null) {
            Authenticator.setDefault(new Authenticator() {
                @Override
                public PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication(proxyUser, proxyPassword.toCharArray());
                }
            });

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    public CXFAuthenticator() {
    }


    public static synchronized void addAuthenticator() { 
        if (!setup) {
            Authenticator wrapped = null;
            for (final Field f : Authenticator.class.getDeclaredFields()) {
                if (f.getType().equals(Authenticator.class)) {
                    ReflectionUtil.setAccessible(f);
                    try {
                        wrapped = (Authenticator)f.get(null);
                    } catch (Exception e) {
                        //ignore
                    }
                }
            }
            
            try {
                InputStream ins = ReferencingAuthenticator.class.getResourceAsStream("ReferencingAuthenticator.class");
                final byte b[] = IOUtils.readBytesFromStream(ins);
                ClassLoader loader = new URLClassLoader(new URL[0], ClassLoader.getSystemClassLoader());
                Method m = ClassLoader.class.getDeclaredMethod("defineClass", String.class, 
                                                               byte[].class, Integer.TYPE, Integer.TYPE);
                ReflectionUtil.setAccessible(m).invoke(loader, ReferencingAuthenticator.class.getName(),
                                                       b, 0, b.length);
                Class<?> cls = loader.loadClass(ReferencingAuthenticator.class.getName());
                Authenticator auth = (Authenticator)cls.getConstructor(Authenticator.class, Authenticator.class)
                    .newInstance(INSTANCE, wrapped);
                
                Authenticator.setDefault(auth);
            } catch (Throwable t) {
                //ignore

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         ArrayList<Proxy> result = new ArrayList<Proxy>();
         result.add(new Proxy(Type.HTTP, new InetSocketAddress(proxySettings.getProxyHost(),
                  proxySettings.getProxyPort())));
         if (proxySettings.isAuthenticationSupported())
         {
            Authenticator.setDefault(new Authenticator()
            {
               @Override
               protected PasswordAuthentication getPasswordAuthentication()
               {
                  return new PasswordAuthentication(proxySettings.getProxyUserName(),

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