Added support to proxy authentication (#4249)

Added support to proxy authentication

Signed-off-by: Marcelo Rubim <marcelorubim@gmail.com>

Author: marcelorubim

connectors/jetty-connector/src/main/java/org/glassfish/jersey/jetty/connector/JettyConnector.java

@@ -184,6 +184,13 @@ class JettyConnector implements Connector {
             final URI u = getProxyUri(proxyUri);
             final ProxyConfiguration proxyConfig = client.getProxyConfiguration();
             proxyConfig.getProxies().add(new HttpProxy(u.getHost(), u.getPort()));
+
+            final Object proxyUsername = config.getProperties().get(ClientProperties.PROXY_USERNAME);
+            if (proxyUsername != null) {
+                final Object proxyPassword = config.getProperties().get(ClientProperties.PROXY_PASSWORD);
+                auth.addAuthentication(new BasicAuthentication(u, "<<ANY_REALM>>",
+                        String.valueOf(proxyUsername), String.valueOf(proxyPassword)));
+            }
         }
 
         if (disableCookies) {

connectors/jetty-connector/src/test/java/org/glassfish/jersey/jetty/connector/ProxyTest.java

@@ -0,0 +1,147 @@
+/*
+ * Copyright (c) 2019 Banco do Brasil S/A. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0, which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * This Source Code may also be made available under the following Secondary
+ * Licenses when the conditions for such availability set forth in the
+ * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
+ * version 2 with the GNU Classpath Exception, which is available at
+ * https://www.gnu.org/software/classpath/license.html.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
+ * Contributors:
+ *    Marcelo Rubim
+ */
+package org.glassfish.jersey.jetty.connector;
+
+import org.eclipse.jetty.server.Request;
+import org.eclipse.jetty.server.Server;
+import org.eclipse.jetty.server.handler.AbstractHandler;
+import org.glassfish.jersey.client.ClientConfig;
+import org.glassfish.jersey.client.ClientProperties;
+import org.glassfish.jersey.server.ResourceConfig;
+import org.glassfish.jersey.test.JerseyTest;
+import org.junit.Test;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import javax.ws.rs.core.Application;
+import javax.ws.rs.core.Response;
+import java.io.IOException;
+import java.nio.charset.Charset;
+import java.util.Base64;
+
+import static org.junit.Assert.assertEquals;
+
+/**
+ * @author Marcelo Rubim
+\ */
+public class ProxyTest extends JerseyTest {
+    private static final Charset CHARACTER_SET = Charset.forName("iso-8859-1");
+    private static final String PROXY_URI = "http://127.0.0.1:9997";
+    private static final String PROXY_USERNAME = "proxy-user";
+    private static final String PROXY_PASSWORD = "proxy-password";
+
+
+    @Path("")
+    public static class ProxyResource {
+
+        @GET
+        public Response getProxy() {
+            return Response.status(407).header("Proxy-Authenticate", "Basic").build();
+        }
+
+    }
+
+    @Path("proxyTest")
+    public static class ProxyTestResource {
+
+        @GET
+        public Response getOK() {
+            return Response.ok().build();
+        }
+
+    }
+
+    @Override
+    protected Application configure() {
+        ResourceConfig config = new ResourceConfig(ProxyResource.class, ProxyTestResource.class);
+        return config;
+    }
+
+    @Override
+    protected void configureClient(ClientConfig config) {
+        config.connectorProvider(new JettyConnectorProvider());
+    }
+
+    @Test
+    public void testGet407() {
+        startFakeProxy();
+        client().property(ClientProperties.PROXY_URI, ProxyTest.PROXY_URI);
+        Response response = target("proxyTest").request().get();
+        assertEquals(407, response.getStatus());
+    }
+
+    @Test
+    public void testGetSuccess() {
+        startFakeProxy();
+        client().property(ClientProperties.PROXY_URI, ProxyTest.PROXY_URI);
+        client().property(ClientProperties.PROXY_USERNAME, ProxyTest.PROXY_USERNAME);
+        client().property(ClientProperties.PROXY_PASSWORD, ProxyTest.PROXY_PASSWORD);
+        Response response = target("proxyTest").request().get();
+        assertEquals(200, response.getStatus());
+    }
+
+    private void startFakeProxy(){
+        Server server = new Server(9997);
+        server.setHandler(new ProxyHandler());
+        try {
+            server.start();
+        } catch (Exception e) {
+
+        }
+    }
+
+    class ProxyHandler extends AbstractHandler {
+        @Override
+        public void handle(String target,
+                           Request baseRequest,
+                           HttpServletRequest request,
+                           HttpServletResponse response) throws IOException,
+                ServletException {
+
+            if (request.getHeader("Proxy-Authorization") != null) {
+                String proxyAuthorization = request.getHeader("Proxy-Authorization");
+                String decoded = new String(Base64.getDecoder().decode(proxyAuthorization.substring(6).getBytes()),
+                        CHARACTER_SET);
+                final String[] split = decoded.split(":");
+                final String username = split[0];
+                final String password = split[1];
+
+                if (!username.equals(PROXY_USERNAME)) {
+                    response.setStatus(400);
+                    System.out.println("Found unexpected username: " + username);
+                }
+
+                if (!password.equals(PROXY_PASSWORD)) {
+                    response.setStatus(400);
+                    System.out.println("Found unexpected password: " + username);
+                }
+                response.setStatus(200);
+                //TODO Add redirect to requestURI
+            } else {
+                response.setStatus(407);
+                response.addHeader("Proxy-Authenticate", "Basic");
+            }
+
+
+            baseRequest.setHandled(true);
+        }
+    }
+}