/*

 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * @test

 * @bug 8203882

 * @summary (httpclient) Check that HttpClient throws IOException when

 *      receiving 401/407 with no WWW-Authenticate/Proxy-Authenticate

 *      header only in the case where an authenticator is configured

 *      for the client. If no authenticator is configured the client

 *      should simply let the caller deal with the unauthorized response.

 * @modules java.base/sun.net.www.http

 *          java.net.http/jdk.internal.net.http.common

 *          java.net.http/jdk.internal.net.http.frame

 *          java.net.http/jdk.internal.net.http.hpack

 *          java.logging

 *          jdk.httpserver

 * @library /lib/testlibrary /test/lib http2/server

 * @build Http2TestServer

 * @build jdk.testlibrary.SimpleSSLContext

 * @run testng/othervm

 *       -Djdk.httpclient.HttpClient.log=headers

 *       UnauthorizedTest

 */

import com.sun.net.httpserver.HttpServer;

import com.sun.net.httpserver.HttpsConfigurator;

import com.sun.net.httpserver.HttpsServer;

import jdk.testlibrary.SimpleSSLContext;

import org.testng.annotations.AfterTest;

import org.testng.annotations.BeforeTest;

import org.testng.annotations.DataProvider;

import org.testng.annotations.Test;

import javax.net.ssl.SSLContext;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.net.Authenticator;

import java.net.InetAddress;

import java.net.InetSocketAddress;

import java.net.URI;

import java.net.http.HttpClient;

import java.net.http.HttpRequest;

import java.net.http.HttpResponse;

import java.net.http.HttpResponse.BodyHandlers;

import java.util.concurrent.ExecutionException;

import java.util.concurrent.atomic.AtomicLong;

import static java.lang.System.out;

import static java.nio.charset.StandardCharsets.UTF_8;

import static org.testng.Assert.assertEquals;

import static org.testng.Assert.assertTrue;

public class UnauthorizedTest implements HttpServerAdapters {

    SSLContext sslContext;

    HttpTestServer httpTestServer;        // HTTP/1.1

    HttpTestServer httpsTestServer;       // HTTPS/1.1

    HttpTestServer http2TestServer;       // HTTP/2 ( h2c )

    HttpTestServer https2TestServer;      // HTTP/2 ( h2  )

    String httpURI;

    String httpsURI;

    String http2URI;

    String https2URI;

    HttpClient authClient;

    HttpClient noAuthClient;

    static final int ITERATIONS = 3;

    /*

     * NOT_MODIFIED status code results from a conditional GET where

     * the server does not (must not) return a response body because

     * the condition specified in the request disallows it

     */

    static final int UNAUTHORIZED = 401;

    static final int PROXY_UNAUTHORIZED = 407;

    static final int HTTP_OK = 200;

    static final String MESSAGE = "Unauthorized";

    @DataProvider(name = "all")

    public Object[][] positive() {

        return new Object[][] {

                { httpURI   + "/server", UNAUTHORIZED, true, authClient},

                { httpsURI  + "/server", UNAUTHORIZED, true, authClient},

                { http2URI  + "/server", UNAUTHORIZED, true, authClient},

                { https2URI + "/server", UNAUTHORIZED, true, authClient},

                { httpURI   + "/proxy",  PROXY_UNAUTHORIZED, true, authClient},

                { httpsURI  + "/proxy",  PROXY_UNAUTHORIZED, true, authClient},

                { http2URI  + "/proxy",  PROXY_UNAUTHORIZED, true, authClient},

                { https2URI + "/proxy",  PROXY_UNAUTHORIZED, true, authClient},

                { httpURI   + "/server", UNAUTHORIZED, false, authClient},

                { httpsURI  + "/server", UNAUTHORIZED, false, authClient},

                { http2URI  + "/server", UNAUTHORIZED, false, authClient},

                { https2URI + "/server", UNAUTHORIZED, false, authClient},

                { httpURI   + "/proxy",  PROXY_UNAUTHORIZED, false, authClient},

                { httpsURI  + "/proxy",  PROXY_UNAUTHORIZED, false, authClient},

                { http2URI  + "/proxy",  PROXY_UNAUTHORIZED, false, authClient},

                { https2URI + "/proxy",  PROXY_UNAUTHORIZED, false, authClient},

                { httpURI   + "/server", UNAUTHORIZED, true, noAuthClient},

                { httpsURI  + "/server", UNAUTHORIZED, true, noAuthClient},

                { http2URI  + "/server", UNAUTHORIZED, true, noAuthClient},

                { https2URI + "/server", UNAUTHORIZED, true, noAuthClient},

                { httpURI   + "/proxy",  PROXY_UNAUTHORIZED, true, noAuthClient},

                { httpsURI  + "/proxy",  PROXY_UNAUTHORIZED, true, noAuthClient},

                { http2URI  + "/proxy",  PROXY_UNAUTHORIZED, true, noAuthClient},

                { https2URI + "/proxy",  PROXY_UNAUTHORIZED, true, noAuthClient},

                { httpURI   + "/server", UNAUTHORIZED, false, noAuthClient},

                { httpsURI  + "/server", UNAUTHORIZED, false, noAuthClient},

                { http2URI  + "/server", UNAUTHORIZED, false, noAuthClient},

                { https2URI + "/server", UNAUTHORIZED, false, noAuthClient},

                { httpURI   + "/proxy",  PROXY_UNAUTHORIZED, false, noAuthClient},

                { httpsURI  + "/proxy",  PROXY_UNAUTHORIZED, false, noAuthClient},

                { http2URI  + "/proxy",  PROXY_UNAUTHORIZED, false, noAuthClient},

                { https2URI + "/proxy",  PROXY_UNAUTHORIZED, false, noAuthClient},

        };

    }

    static final AtomicLong requestCounter = new AtomicLong();

    static final Authenticator authenticator = new Authenticator() {

    };

    @Test(dataProvider = "all")

    void test(String uriString, int code, boolean async, HttpClient client) throws Throwable {

        out.printf("%n---- starting (%s, %d, %s, %s) ----%n",

                uriString, code, async ? "async" : "sync",

                client.authenticator().isPresent() ? "authClient" : "noAuthClient");

        URI uri = URI.create(uriString);

        HttpRequest.Builder requestBuilder = HttpRequest

                .newBuilder(uri)

                .GET();

        HttpRequest request = requestBuilder.build();

        out.println("Initial request: " + request.uri());

        boolean shouldThrow = client.authenticator().isPresent();

        String header = (code==UNAUTHORIZED)?"WWW-Authenticate":"Proxy-Authenticate";

        HttpResponse<String> response = null;

        try {

           if (async) {

                response = client.send(request, BodyHandlers.ofString());

            } else {

               try {

                   response = client.sendAsync(request, BodyHandlers.ofString()).get();

               } catch (ExecutionException ex) {

                   throw ex.getCause();

               }

           }

        } catch (IOException ex) {

            if (shouldThrow && ex.getMessage().contains(header)) {

                System.out.println("Got expected exception: " + ex);

                return;

            } else throw ex;

        }

        out.println("  Got response: " + response);

        assertEquals(response.statusCode(), code);

        assertEquals(response.body(),

                (code == UNAUTHORIZED ? "WWW-" : "Proxy-") + MESSAGE);

        if (shouldThrow) {

            throw new RuntimeException("Expected IOException not thrown.");

        }

    }

    // -- Infrastructure

    @BeforeTest

    public void setup() throws Exception {

        sslContext = new SimpleSSLContext().get();

        if (sslContext == null)

            throw new AssertionError("Unexpected null sslContext");

        InetSocketAddress sa = new InetSocketAddress(InetAddress.getLoopbackAddress(), 0);

        httpTestServer = HttpTestServer.of(HttpServer.create(sa, 0));

        httpTestServer.addHandler(new UnauthorizedHandler(), "/http1/");

        httpURI = "http://" + httpTestServer.serverAuthority() + "/http1";

        HttpsServer httpsServer = HttpsServer.create(sa, 0);

        httpsServer.setHttpsConfigurator(new HttpsConfigurator(sslContext));

        httpsTestServer = HttpTestServer.of(httpsServer);

        httpsTestServer.addHandler(new UnauthorizedHandler(),"/https1/");

        httpsURI = "https://" + httpsTestServer.serverAuthority() + "/https1";

        http2TestServer = HttpTestServer.of(new Http2TestServer("localhost", false, 0));

        http2TestServer.addHandler(new UnauthorizedHandler(), "/http2/");

        http2URI = "http://" + http2TestServer.serverAuthority() + "/http2";

        https2TestServer.addHandler(new UnauthorizedHandler(), "/https2/");

        https2URI = "https://" + https2TestServer.serverAuthority() + "/https2";

        authClient = HttpClient.newBuilder()

                .proxy(HttpClient.Builder.NO_PROXY)

                .sslContext(sslContext)

                .authenticator(authenticator)

                .build();

        noAuthClient = HttpClient.newBuilder()

                .proxy(HttpClient.Builder.NO_PROXY)

                .sslContext(sslContext)

                .build();

        httpTestServer.start();

        httpsTestServer.start();

        http2TestServer.start();

        https2TestServer.start();

    }

    @AfterTest

    public void teardown() throws Exception {

        httpTestServer.stop();

        httpsTestServer.stop();

        http2TestServer.stop();

        https2TestServer.stop();

    }

    static class UnauthorizedHandler implements HttpTestHandler {

        @Override

        public void handle(HttpTestExchange t) throws IOException {

            readAllRequestData(t); // shouldn't be any

            String method = t.getRequestMethod();

            String path = t.getRequestURI().getPath();

            HttpTestResponseHeaders rsph = t.getResponseHeaders();

            int code;

            if (path.contains("server")) {

                code = UNAUTHORIZED;

            } else {

                code = PROXY_UNAUTHORIZED;

            }

            String message = (code == UNAUTHORIZED ? "WWW-" : "Proxy-") + MESSAGE;

            byte[] bytes = message.getBytes(UTF_8);

            t.sendResponseHeaders(code, bytes.length);

            try (OutputStream os = t.getResponseBody()) {

                os.write(bytes);

            }

        }

    }

    static void readAllRequestData(HttpTestExchange t) throws IOException {

        try (InputStream is = t.getRequestBody()) {

            is.readAllBytes();

        }

    }

}