httpclient5-testing/src/test/java/org/apache/hc/client5/testing/async/AbstractHttpAsyncClientAuthentication.java

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 * to you under the Apache License, Version 2.0 (the
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 * KIND, either express or implied.  See the License for the
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 * This software consists of voluntary contributions made by many
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package org.apache.hc.client5.testing.async;

import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Future;
import java.util.concurrent.atomic.AtomicLong;

import org.apache.hc.client5.http.AuthenticationStrategy;
import org.apache.hc.client5.http.async.methods.SimpleHttpRequest;
import org.apache.hc.client5.http.async.methods.SimpleHttpResponse;
import org.apache.hc.client5.http.async.methods.SimpleRequestBuilder;
import org.apache.hc.client5.http.auth.AuthChallenge;
import org.apache.hc.client5.http.auth.AuthScheme;
import org.apache.hc.client5.http.auth.AuthSchemeFactory;
import org.apache.hc.client5.http.auth.AuthScope;
import org.apache.hc.client5.http.auth.ChallengeType;
import org.apache.hc.client5.http.auth.Credentials;
import org.apache.hc.client5.http.auth.CredentialsStore;
import org.apache.hc.client5.http.auth.StandardAuthScheme;
import org.apache.hc.client5.http.auth.UsernamePasswordCredentials;
import org.apache.hc.client5.http.config.RequestConfig;
import org.apache.hc.client5.http.impl.DefaultAuthenticationStrategy;
import org.apache.hc.client5.http.impl.async.CloseableHttpAsyncClient;
import org.apache.hc.client5.http.impl.auth.BasicScheme;
import org.apache.hc.client5.http.impl.auth.CredentialsProviderBuilder;
import org.apache.hc.client5.http.protocol.HttpClientContext;
import org.apache.hc.client5.testing.BasicTestAuthenticator;
import org.apache.hc.client5.testing.auth.Authenticator;
import org.apache.hc.core5.function.Decorator;
import org.apache.hc.core5.http.ContentType;
import org.apache.hc.core5.http.HttpException;
import org.apache.hc.core5.http.HttpHeaders;
import org.apache.hc.core5.http.HttpHost;
import org.apache.hc.core5.http.HttpResponse;
import org.apache.hc.core5.http.HttpStatus;
import org.apache.hc.core5.http.HttpVersion;
import org.apache.hc.core5.http.URIScheme;
import org.apache.hc.core5.http.config.Http1Config;
import org.apache.hc.core5.http.config.Lookup;
import org.apache.hc.core5.http.config.Registry;
import org.apache.hc.core5.http.config.RegistryBuilder;
import org.apache.hc.core5.http.impl.HttpProcessors;
import org.apache.hc.core5.http.message.BasicHeader;
import org.apache.hc.core5.http.nio.AsyncServerExchangeHandler;
import org.apache.hc.core5.http.protocol.HttpContext;
import org.apache.hc.core5.http.protocol.HttpCoreContext;
import org.apache.hc.core5.http2.config.H2Config;
import org.apache.hc.core5.http2.impl.H2Processors;
import org.apache.hc.core5.net.URIAuthority;
import org.junit.Assert;
import org.junit.Test;

public abstract class AbstractHttpAsyncClientAuthentication<T extends CloseableHttpAsyncClient> extends AbstractIntegrationTestBase<T> {

    protected final HttpVersion protocolVersion;

    public AbstractHttpAsyncClientAuthentication(final URIScheme scheme, final HttpVersion protocolVersion) {
        super(scheme);
        this.protocolVersion = protocolVersion;
    }

    @Override
    public final HttpHost start() throws Exception {
        return start(requestHandler -> new AuthenticatingAsyncDecorator(requestHandler, new BasicTestAuthenticator("test:test", "test realm")));
    }

    public final HttpHost start(
            final Decorator<AsyncServerExchangeHandler> exchangeHandlerDecorator) throws Exception {
        if (protocolVersion.greaterEquals(HttpVersion.HTTP_2_0)) {
            return super.start(
                    H2Processors.server(),
                    exchangeHandlerDecorator,
                    H2Config.DEFAULT);
        } else {
            return super.start(
                    HttpProcessors.server(),
                    exchangeHandlerDecorator,
                    Http1Config.DEFAULT);
        }
    }

    abstract void setDefaultAuthSchemeRegistry(Lookup<AuthSchemeFactory> authSchemeRegistry);

    abstract void setTargetAuthenticationStrategy(AuthenticationStrategy targetAuthStrategy);

    static class TestCredentialsProvider implements CredentialsStore {

        private final Credentials creds;
        private AuthScope authscope;

        TestCredentialsProvider(final Credentials creds) {
            super();
            this.creds = creds;
        }

        @Override
        public void clear() {
        }

        @Override
        public Credentials getCredentials(final AuthScope authscope, final HttpContext context) {
            this.authscope = authscope;
            return this.creds;
        }

        @Override
        public void setCredentials(final AuthScope authscope, final Credentials credentials) {
        }

        public AuthScope getAuthScope() {
            return this.authscope;
        }

    }

    @Test
    public void testBasicAuthenticationNoCreds() throws Exception {
        server.register("*", AsyncEchoHandler::new);
        final HttpHost target = start();

        final TestCredentialsProvider credsProvider = new TestCredentialsProvider(null);
        final HttpClientContext context = HttpClientContext.create();
        context.setCredentialsProvider(credsProvider);

        final Future<SimpleHttpResponse> future = httpclient.execute(SimpleRequestBuilder.get()
                        .setHttpHost(target)
                        .setPath("/")
                        .build(), context, null);
        final HttpResponse response = future.get();

        Assert.assertNotNull(response);
        Assert.assertEquals(HttpStatus.SC_UNAUTHORIZED, response.getCode());
        final AuthScope authscope = credsProvider.getAuthScope();
        Assert.assertNotNull(authscope);
        Assert.assertEquals("test realm", authscope.getRealm());
    }

    @Test
    public void testBasicAuthenticationFailure() throws Exception {
        server.register("*", AsyncEchoHandler::new);
        final HttpHost target = start();

        final TestCredentialsProvider credsProvider = new TestCredentialsProvider(
                new UsernamePasswordCredentials("test", "all-wrong".toCharArray()));
        final HttpClientContext context = HttpClientContext.create();
        context.setCredentialsProvider(credsProvider);

        final Future<SimpleHttpResponse> future = httpclient.execute(SimpleRequestBuilder.get()
                        .setHttpHost(target)
                        .setPath("/")
                        .build(), context, null);
        final HttpResponse response = future.get();

        Assert.assertNotNull(response);
        Assert.assertEquals(HttpStatus.SC_UNAUTHORIZED, response.getCode());
        final AuthScope authscope = credsProvider.getAuthScope();
        Assert.assertNotNull(authscope);
        Assert.assertEquals("test realm", authscope.getRealm());
    }

    @Test
    public void testBasicAuthenticationSuccess() throws Exception {
        server.register("*", AsyncEchoHandler::new);
        final HttpHost target = start();

        final TestCredentialsProvider credsProvider = new TestCredentialsProvider(
                new UsernamePasswordCredentials("test", "test".toCharArray()));
        final HttpClientContext context = HttpClientContext.create();
        context.setCredentialsProvider(credsProvider);

        final Future<SimpleHttpResponse> future = httpclient.execute(
                SimpleRequestBuilder.get()
                        .setHttpHost(target)
                        .setPath("/")
                        .build(), context, null);
        final HttpResponse response = future.get();

        Assert.assertNotNull(response);
        Assert.assertEquals(HttpStatus.SC_OK, response.getCode());
        final AuthScope authscope = credsProvider.getAuthScope();
        Assert.assertNotNull(authscope);
        Assert.assertEquals("test realm", authscope.getRealm());
    }

    @Test
    public void testBasicAuthenticationWithEntitySuccess() throws Exception {
        server.register("*", AsyncEchoHandler::new);
        final HttpHost target = start();

        final TestCredentialsProvider credsProvider = new TestCredentialsProvider(
                new UsernamePasswordCredentials("test", "test".toCharArray()));
        final HttpClientContext context = HttpClientContext.create();
        context.setCredentialsProvider(credsProvider);
        final Future<SimpleHttpResponse> future = httpclient.execute(
                SimpleRequestBuilder.put()
                        .setHttpHost(target)
                        .setPath("/")
                        .setBody("Some important stuff", ContentType.TEXT_PLAIN)
                        .build(), context, null);
        final HttpResponse response = future.get();

        Assert.assertNotNull(response);
        Assert.assertEquals(HttpStatus.SC_OK, response.getCode());
        final AuthScope authscope = credsProvider.getAuthScope();
        Assert.assertNotNull(authscope);
        Assert.assertEquals("test realm", authscope.getRealm());
    }

    @Test
    public void testBasicAuthenticationExpectationFailure() throws Exception {
        server.register("*", AsyncEchoHandler::new);
        final HttpHost target = start();

        final TestCredentialsProvider credsProvider = new TestCredentialsProvider(
                new UsernamePasswordCredentials("test", "all-wrong".toCharArray()));
        final HttpClientContext context = HttpClientContext.create();
        context.setCredentialsProvider(credsProvider);
        context.setRequestConfig(RequestConfig.custom().setExpectContinueEnabled(true).build());
        final Future<SimpleHttpResponse> future = httpclient.execute(
                SimpleRequestBuilder.put()
                        .setHttpHost(target)
                        .setPath("/")
                        .setBody("Some important stuff", ContentType.TEXT_PLAIN)
                        .build(), context, null);
        final HttpResponse response = future.get();

        Assert.assertNotNull(response);
        Assert.assertEquals(HttpStatus.SC_UNAUTHORIZED, response.getCode());
    }

    @Test
    public void testBasicAuthenticationExpectationSuccess() throws Exception {
        server.register("*", AsyncEchoHandler::new);
        final HttpHost target = start();

        final TestCredentialsProvider credsProvider = new TestCredentialsProvider(
                new UsernamePasswordCredentials("test", "test".toCharArray()));
        final HttpClientContext context = HttpClientContext.create();
        context.setCredentialsProvider(credsProvider);
        context.setRequestConfig(RequestConfig.custom().setExpectContinueEnabled(true).build());
        final Future<SimpleHttpResponse> future = httpclient.execute(
                SimpleRequestBuilder.put()
                        .setHttpHost(target)
                        .setPath("/")
                        .setBody("Some important stuff", ContentType.TEXT_PLAIN)
                        .build(), context, null);
        final HttpResponse response = future.get();

        Assert.assertNotNull(response);
        Assert.assertEquals(HttpStatus.SC_OK, response.getCode());
        final AuthScope authscope = credsProvider.getAuthScope();
        Assert.assertNotNull(authscope);
        Assert.assertEquals("test realm", authscope.getRealm());
    }

    @Test
    public void testBasicAuthenticationCredentialsCaching() throws Exception {
        server.register("*", AsyncEchoHandler::new);

        final AtomicLong count = new AtomicLong(0);
        setTargetAuthenticationStrategy(new DefaultAuthenticationStrategy() {

            @Override
            public List<AuthScheme> select(
                    final ChallengeType challengeType,
                    final Map<String, AuthChallenge> challenges,
                    final HttpContext context) {
                count.incrementAndGet();
                return super.select(challengeType, challenges, context);
            }
        });
        final HttpHost target = start();

        final HttpClientContext context = HttpClientContext.create();
        context.setCredentialsProvider(CredentialsProviderBuilder.create()
                        .add(target, "test", "test".toCharArray())
                .build());

        final Future<SimpleHttpResponse> future1 = httpclient.execute(SimpleRequestBuilder.get()
                        .setHttpHost(target)
                        .setPath("/")
                        .build(), context, null);
        final HttpResponse response1 = future1.get();
        Assert.assertNotNull(response1);
        Assert.assertEquals(HttpStatus.SC_OK, response1.getCode());

        final Future<SimpleHttpResponse> future2 = httpclient.execute(SimpleRequestBuilder.get()
                        .setHttpHost(target)
                        .setPath("/")
                        .build(), context, null);
        final HttpResponse response2 = future2.get();
        Assert.assertNotNull(response2);
        Assert.assertEquals(HttpStatus.SC_OK, response2.getCode());

        Assert.assertEquals(1, count.get());
    }

    @Test
    public void testAuthenticationUserinfoInRequestSuccess() throws Exception {
        server.register("*", AsyncEchoHandler::new);
        final HttpHost target = start();

        final HttpClientContext context = HttpClientContext.create();
        final Future<SimpleHttpResponse> future = httpclient.execute(
                SimpleRequestBuilder.get()
                        .setScheme(target.getSchemeName())
                        .setAuthority(new URIAuthority("test:test", target.getHostName(), target.getPort()))
                        .setPath("/")
                        .build(), context, null);
        final SimpleHttpResponse response = future.get();

        Assert.assertNotNull(response);
        Assert.assertEquals(HttpStatus.SC_OK, response.getCode());
    }

    @Test
    public void testAuthenticationUserinfoInRequestFailure() throws Exception {
        server.register("*", AsyncEchoHandler::new);
        final HttpHost target = start();

        final HttpClientContext context = HttpClientContext.create();
        final Future<SimpleHttpResponse> future = httpclient.execute(SimpleRequestBuilder.get()
                        .setScheme(target.getSchemeName())
                        .setAuthority(new URIAuthority("test:all-worng", target.getHostName(), target.getPort()))
                        .setPath("/")
                        .build(), context, null);
        final SimpleHttpResponse response = future.get();

        Assert.assertNotNull(response);
        Assert.assertEquals(HttpStatus.SC_UNAUTHORIZED, response.getCode());
    }

    @Test
    public void testAuthenticationUserinfoInRedirectSuccess() throws Exception {
        server.register("*", AsyncEchoHandler::new);
        final HttpHost target = start();
        server.register("/thatway", () -> new AbstractSimpleServerExchangeHandler() {

            @Override
            protected SimpleHttpResponse handle(
                    final SimpleHttpRequest request, final HttpCoreContext context) throws HttpException {
                final SimpleHttpResponse response = new SimpleHttpResponse(HttpStatus.SC_MOVED_PERMANENTLY);
                response.addHeader(new BasicHeader("Location", target.getSchemeName() + "://test:test@" + target.toHostString() + "/"));
                return response;
            }
        });

        final HttpClientContext context = HttpClientContext.create();
        final Future<SimpleHttpResponse> future = httpclient.execute(
                SimpleRequestBuilder.get()
                        .setScheme(target.getSchemeName())
                        .setAuthority(new URIAuthority("test:test", target.getHostName(), target.getPort()))
                        .setPath("/thatway")
                        .build(), context, null);
        final SimpleHttpResponse response = future.get();

        Assert.assertNotNull(response);
        Assert.assertEquals(HttpStatus.SC_OK, response.getCode());
    }

    @Test
    public void testReauthentication() throws Exception {
        server.register("*", AsyncEchoHandler::new);
        final TestCredentialsProvider credsProvider = new TestCredentialsProvider(
                new UsernamePasswordCredentials("test", "test".toCharArray()));

        final Registry<AuthSchemeFactory> authSchemeRegistry = RegistryBuilder.<AuthSchemeFactory>create()
                .register("MyBasic", context -> new BasicScheme() {

                    private static final long serialVersionUID = 1L;

                    @Override
                    public String getName() {
                        return "MyBasic";
                    }

                })
                .build();
        setDefaultAuthSchemeRegistry(authSchemeRegistry);

        final Authenticator authenticator = new BasicTestAuthenticator("test:test", "test realm") {

            private final AtomicLong count = new AtomicLong(0);

            @Override
            public boolean authenticate(final URIAuthority authority, final String requestUri, final String credentials) {
                final boolean authenticated = super.authenticate(authority, requestUri, credentials);
                if (authenticated) {
                    return this.count.incrementAndGet() % 4 != 0;
                }
                return false;
            }
        };

        final HttpHost target = start(
                exchangeHandler -> new AuthenticatingAsyncDecorator(exchangeHandler, authenticator) {

                    @Override
                    protected void customizeUnauthorizedResponse(final HttpResponse unauthorized) {
                        unauthorized.removeHeaders(HttpHeaders.WWW_AUTHENTICATE);
                        unauthorized.addHeader(HttpHeaders.WWW_AUTHENTICATE, "MyBasic realm=\"test realm\"");
                    }

                });

        final RequestConfig config = RequestConfig.custom()
                .setTargetPreferredAuthSchemes(Collections.singletonList("MyBasic"))
                .build();
        final HttpClientContext context = HttpClientContext.create();
        context.setCredentialsProvider(credsProvider);

        for (int i = 0; i < 10; i++) {
            final SimpleHttpRequest request = SimpleRequestBuilder.get()
                        .setHttpHost(target)
                        .setPath("/")
                        .build();
            request.setConfig(config);
            final Future<SimpleHttpResponse> future = httpclient.execute(request, context, null);
            final SimpleHttpResponse response = future.get();
            Assert.assertNotNull(response);
            Assert.assertEquals(HttpStatus.SC_OK, response.getCode());
        }
    }

    @Test
    public void testAuthenticationFallback() throws Exception {
        server.register("*", AsyncEchoHandler::new);
        final HttpHost target = start(
                exchangeHandler -> new AuthenticatingAsyncDecorator(exchangeHandler, new BasicTestAuthenticator("test:test", "test realm")) {

                    @Override
                    protected void customizeUnauthorizedResponse(final HttpResponse unauthorized) {
                        unauthorized.addHeader(HttpHeaders.WWW_AUTHENTICATE, StandardAuthScheme.DIGEST + " realm=\"test realm\" invalid");
                    }

                });

        final TestCredentialsProvider credsProvider = new TestCredentialsProvider(
                new UsernamePasswordCredentials("test", "test".toCharArray()));
        final HttpClientContext context = HttpClientContext.create();
        context.setCredentialsProvider(credsProvider);

        final Future<SimpleHttpResponse> future = httpclient.execute(SimpleRequestBuilder.get()
                        .setHttpHost(target)
                        .setPath("/")
                        .build(), context, null);
        final SimpleHttpResponse response = future.get();
        Assert.assertNotNull(response);
        Assert.assertEquals(HttpStatus.SC_OK, response.getCode());
        final AuthScope authscope = credsProvider.getAuthScope();
        Assert.assertNotNull(authscope);
        Assert.assertEquals("test realm", authscope.getRealm());
    }

}