/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.cxf.systest.sts.symmetric;

import java.net.URL;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

import javax.xml.namespace.QName;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.dom.DOMSource;
import javax.xml.ws.BindingProvider;
import javax.xml.ws.Dispatch;
import javax.xml.ws.Service;
import javax.xml.ws.soap.AddressingFeature;

import org.w3c.dom.Document;
import org.w3c.dom.Element;

import org.apache.cxf.Bus;
import org.apache.cxf.BusFactory;
import org.apache.cxf.bus.spring.SpringBusFactory;
import org.apache.cxf.endpoint.Client;
import org.apache.cxf.jaxws.DispatchImpl;
import org.apache.cxf.systest.sts.common.SecurityTestUtil;
import org.apache.cxf.systest.sts.common.TestParam;
import org.apache.cxf.systest.sts.common.TokenTestUtils;
import org.apache.cxf.systest.sts.deployment.STSServer;
import org.apache.cxf.systest.sts.deployment.StaxSTSServer;
import org.apache.cxf.testutil.common.AbstractBusClientServerTestBase;
import org.apache.cxf.ws.security.SecurityConstants;
import org.apache.cxf.ws.security.trust.STSClient;
import org.apache.wss4j.common.WSS4JConstants;
import org.example.contract.doubleit.DoubleItPortType;

import org.junit.BeforeClass;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized.Parameters;

/**
 * Test the Symmetric binding. The CXF client gets a token from the STS by authenticating via a
 * Username Token over the symmetric binding, and then sends it to the CXF endpoint using
 * the symmetric binding.
 */
@RunWith(value = org.junit.runners.Parameterized.class)
public class SymmetricBindingTest extends AbstractBusClientServerTestBase {

    static final String STSPORT = allocatePort(STSServer.class);
    static final String STAX_STSPORT = allocatePort(StaxSTSServer.class);
    static final String STSPORT2 = allocatePort(STSServer.class, 2);
    static final String STAX_STSPORT2 = allocatePort(StaxSTSServer.class, 2);

    private static final String NAMESPACE = "http://www.example.org/contract/DoubleIt";
    private static final QName SERVICE_QNAME = new QName(NAMESPACE, "DoubleItService");

    private static final String PORT = allocatePort(Server.class);
    private static final String STAX_PORT = allocatePort(StaxServer.class);

    final TestParam test;

    public SymmetricBindingTest(TestParam type) {
        this.test = type;
    }

    @BeforeClass
    public static void startServers() throws Exception {
        assertTrue(
            "Server failed to launch",
            // run the server in the same process
            // set this to false to fork
            launchServer(Server.class, true)
        );
        assertTrue(
                   "Server failed to launch",
                   // run the server in the same process
                   // set this to false to fork
                   launchServer(StaxServer.class, true)
        );
        STSServer stsServer = new STSServer();
        stsServer.setContext("cxf-ut.xml");
        assertTrue(launchServer(stsServer));

        stsServer = new STSServer();
        stsServer.setContext("cxf-ut-encrypted.xml");
        assertTrue(launchServer(stsServer));

        StaxSTSServer staxStsServer = new StaxSTSServer();
        staxStsServer.setContext("stax-cxf-ut.xml");
        assertTrue(launchServer(staxStsServer));

        staxStsServer = new StaxSTSServer();
        staxStsServer.setContext("stax-cxf-ut-encrypted.xml");
        assertTrue(launchServer(staxStsServer));
    }

    @Parameters(name = "{0}")
    public static Collection<TestParam> data() {

        return Arrays.asList(new TestParam[] {new TestParam(PORT, false, STSPORT2),
                                              new TestParam(PORT, true, STSPORT2),
                                              new TestParam(STAX_PORT, false, STSPORT2),
                                              new TestParam(STAX_PORT, true, STSPORT2),

                                              new TestParam(PORT, false, STAX_STSPORT2),
                                              new TestParam(PORT, true, STAX_STSPORT2),
                                              new TestParam(STAX_PORT, false, STAX_STSPORT2),
                                              new TestParam(STAX_PORT, true, STAX_STSPORT2),
        });
    }

    @org.junit.AfterClass
    public static void cleanup() throws Exception {
        SecurityTestUtil.cleanup();
        stopAllServers();
    }

    @org.junit.Test
    public void testUsernameTokenSAML1() throws Exception {
        SpringBusFactory bf = new SpringBusFactory();
        URL busFile = SymmetricBindingTest.class.getResource("cxf-client.xml");

        Bus bus = bf.createBus(busFile.toString());
        BusFactory.setDefaultBus(bus);
        BusFactory.setThreadDefaultBus(bus);

        URL wsdl = SymmetricBindingTest.class.getResource("DoubleIt.wsdl");
        Service service = Service.create(wsdl, SERVICE_QNAME);
        QName portQName = new QName(NAMESPACE, "DoubleItSymmetricSAML1Port");
        DoubleItPortType symmetricSaml1Port =
            service.getPort(portQName, DoubleItPortType.class);
        updateAddressPort(symmetricSaml1Port, test.getPort());

        TokenTestUtils.updateSTSPort((BindingProvider)symmetricSaml1Port, test.getStsPort());

        if (test.isStreaming()) {
            SecurityTestUtil.enableStreaming(symmetricSaml1Port);
        }

        doubleIt(symmetricSaml1Port, 25);
        TokenTestUtils.verifyToken(symmetricSaml1Port);

        ((java.io.Closeable)symmetricSaml1Port).close();
        bus.shutdown(true);
    }

    @org.junit.Test
    public void testUsernameTokenSAML2() throws Exception {

        SpringBusFactory bf = new SpringBusFactory();
        URL busFile = SymmetricBindingTest.class.getResource("cxf-client.xml");

        Bus bus = bf.createBus(busFile.toString());
        BusFactory.setDefaultBus(bus);
        BusFactory.setThreadDefaultBus(bus);

        URL wsdl = SymmetricBindingTest.class.getResource("DoubleIt.wsdl");
        Service service = Service.create(wsdl, SERVICE_QNAME);
        QName portQName = new QName(NAMESPACE, "DoubleItSymmetricSAML2Port");
        DoubleItPortType symmetricSaml2Port =
            service.getPort(portQName, DoubleItPortType.class);
        updateAddressPort(symmetricSaml2Port, test.getPort());

        TokenTestUtils.updateSTSPort((BindingProvider)symmetricSaml2Port, test.getStsPort());

        if (test.isStreaming()) {
            SecurityTestUtil.enableStreaming(symmetricSaml2Port);
        }

        doubleIt(symmetricSaml2Port, 30);
        TokenTestUtils.verifyToken(symmetricSaml2Port);

        ((java.io.Closeable)symmetricSaml2Port).close();
        bus.shutdown(true);
    }

    @org.junit.Test
    public void testUsernameTokenSAML2ProtectTokens() throws Exception {

        if (test.isStreaming()) {
            // We don't support ProtectTokens + the streaming clients.
            return;
        }
        SpringBusFactory bf = new SpringBusFactory();
        URL busFile = SymmetricBindingTest.class.getResource("cxf-client.xml");

        Bus bus = bf.createBus(busFile.toString());
        BusFactory.setDefaultBus(bus);
        BusFactory.setThreadDefaultBus(bus);

        URL wsdl = SymmetricBindingTest.class.getResource("DoubleIt.wsdl");
        Service service = Service.create(wsdl, SERVICE_QNAME);
        QName portQName = new QName(NAMESPACE, "DoubleItSymmetricSAML2ProtectTokensPort");
        DoubleItPortType symmetricSaml2Port =
            service.getPort(portQName, DoubleItPortType.class);
        updateAddressPort(symmetricSaml2Port, test.getPort());

        TokenTestUtils.updateSTSPort((BindingProvider)symmetricSaml2Port, test.getStsPort());

        if (test.isStreaming()) {
            SecurityTestUtil.enableStreaming(symmetricSaml2Port);
        }

        doubleIt(symmetricSaml2Port, 30);
        TokenTestUtils.verifyToken(symmetricSaml2Port);

        ((java.io.Closeable)symmetricSaml2Port).close();
        bus.shutdown(true);
    }

    @org.junit.Test
    public void testUsernameTokenSAML1Encrypted() throws Exception {
        SpringBusFactory bf = new SpringBusFactory();
        URL busFile = SymmetricBindingTest.class.getResource("cxf-client.xml");

        Bus bus = bf.createBus(busFile.toString());
        BusFactory.setDefaultBus(bus);
        BusFactory.setThreadDefaultBus(bus);

        URL wsdl = SymmetricBindingTest.class.getResource("DoubleIt.wsdl");
        Service service = Service.create(wsdl, SERVICE_QNAME);
        QName portQName = new QName(NAMESPACE, "DoubleItSymmetricSAML1EncryptedPort");
        DoubleItPortType symmetricSaml1Port =
            service.getPort(portQName, DoubleItPortType.class);
        updateAddressPort(symmetricSaml1Port, test.getPort());

        TokenTestUtils.updateSTSPort((BindingProvider)symmetricSaml1Port, test.getStsPort());

        if (test.isStreaming()) {
            SecurityTestUtil.enableStreaming(symmetricSaml1Port);
        }

        doubleIt(symmetricSaml1Port, 25);

        ((java.io.Closeable)symmetricSaml1Port).close();
        bus.shutdown(true);
    }

    @org.junit.Test
    public void testUsernameTokenSAML2SecureConversation() throws Exception {

        SpringBusFactory bf = new SpringBusFactory();
        URL busFile = SymmetricBindingTest.class.getResource("cxf-client.xml");

        Bus bus = bf.createBus(busFile.toString());
        BusFactory.setDefaultBus(bus);
        BusFactory.setThreadDefaultBus(bus);

        URL wsdl = SymmetricBindingTest.class.getResource("DoubleIt.wsdl");
        Service service = Service.create(wsdl, SERVICE_QNAME);
        QName portQName = new QName(NAMESPACE, "DoubleItSymmetricSAML2SecureConversationPort");
        DoubleItPortType symmetricSaml2Port =
            service.getPort(portQName, DoubleItPortType.class);
        updateAddressPort(symmetricSaml2Port, test.getPort());

        TokenTestUtils.updateSTSPort((BindingProvider)symmetricSaml2Port, test.getStsPort());

        if (test.isStreaming()) {
            SecurityTestUtil.enableStreaming(symmetricSaml2Port);
        }

        doubleIt(symmetricSaml2Port, 30);

        ((java.io.Closeable)symmetricSaml2Port).close();
        bus.shutdown(true);
    }

    @org.junit.Test
    public void testUsernameTokenSAML2Dispatch() throws Exception {

        SpringBusFactory bf = new SpringBusFactory();
        URL busFile = SymmetricBindingTest.class.getResource("cxf-client.xml");

        Bus bus = bf.createBus(busFile.toString());
        BusFactory.setDefaultBus(bus);
        BusFactory.setThreadDefaultBus(bus);

        URL wsdl = SymmetricBindingTest.class.getResource("DoubleIt.wsdl");
        Service service = Service.create(wsdl, SERVICE_QNAME);
        QName portQName = new QName(NAMESPACE, "DoubleItSymmetricSAML2Port");

        Dispatch<DOMSource> dispatch =
            service.createDispatch(portQName, DOMSource.class, Service.Mode.PAYLOAD, new AddressingFeature());
        updateAddressPort(dispatch, test.getPort());

        // Setup STSClient
        STSClient stsClient = createDispatchSTSClient(bus);
        String wsdlLocation = "http://localhost:" + test.getStsPort() + "/SecurityTokenService/UT?wsdl";
        stsClient.setWsdlLocation(wsdlLocation);

        // Creating a DOMSource Object for the request
        DOMSource request = createDOMRequest();

        // Make a successful request
        Client client = ((DispatchImpl<DOMSource>) dispatch).getClient();
        client.getRequestContext().put(SecurityConstants.STS_CLIENT, stsClient);

        if (test.isStreaming()) {
            client.getRequestContext().put(SecurityConstants.ENABLE_STREAMING_SECURITY, "true");
            client.getResponseContext().put(SecurityConstants.ENABLE_STREAMING_SECURITY, "true");
        }

        DOMSource response = dispatch.invoke(request);
        assertNotNull(response);

        bus.shutdown(true);
    }

    @org.junit.Test
    public void testUsernameTokenSAML1Dispatch() throws Exception {

        SpringBusFactory bf = new SpringBusFactory();
        URL busFile = SymmetricBindingTest.class.getResource("cxf-client.xml");

        Bus bus = bf.createBus(busFile.toString());
        BusFactory.setDefaultBus(bus);
        BusFactory.setThreadDefaultBus(bus);

        URL wsdl = SymmetricBindingTest.class.getResource("DoubleIt.wsdl");
        Service service = Service.create(wsdl, SERVICE_QNAME);
        QName portQName = new QName(NAMESPACE, "DoubleItSymmetricSAML1Port");

        Dispatch<DOMSource> dispatch =
            service.createDispatch(portQName, DOMSource.class, Service.Mode.PAYLOAD, new AddressingFeature());
        updateAddressPort(dispatch, test.getPort());

        // Setup STSClient
        STSClient stsClient = createDispatchSTSClient(bus);
        String wsdlLocation = "http://localhost:" + test.getStsPort() + "/SecurityTokenService/UT?wsdl";
        stsClient.setWsdlLocation(wsdlLocation);

        // Creating a DOMSource Object for the request
        DOMSource request = createDOMRequest();

        // Make a successful request
        Client client = ((DispatchImpl<DOMSource>) dispatch).getClient();
        client.getRequestContext().put(SecurityConstants.STS_CLIENT, stsClient);
        //client.getRequestContext().put("find.dispatch.operation", Boolean.TRUE);


        if (test.isStreaming()) {
            client.getRequestContext().put(SecurityConstants.ENABLE_STREAMING_SECURITY, "true");
            client.getResponseContext().put(SecurityConstants.ENABLE_STREAMING_SECURITY, "true");
        }

        DOMSource response = dispatch.invoke(request);
        assertNotNull(response);

        bus.shutdown(true);
    }

    private DOMSource createDOMRequest() throws ParserConfigurationException {
        // Creating a DOMSource Object for the request
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        Document requestDoc = db.newDocument();
        Element root = requestDoc.createElementNS("http://www.example.org/schema/DoubleIt", "ns2:DoubleIt");
        root.setAttributeNS(WSS4JConstants.XMLNS_NS, "xmlns:ns2", "http://www.example.org/schema/DoubleIt");
        Element number = requestDoc.createElementNS(null, "numberToDouble");
        number.setTextContent("25");
        root.appendChild(number);
        requestDoc.appendChild(root);
        return new DOMSource(requestDoc);
    }

    private STSClient createDispatchSTSClient(Bus bus) {
        STSClient stsClient = new STSClient(bus);
        stsClient.setServiceName("{http://docs.oasis-open.org/ws-sx/ws-trust/200512/}SecurityTokenService");
        stsClient.setEndpointName("{http://docs.oasis-open.org/ws-sx/ws-trust/200512/}UT_Port");

        Map<String, Object> properties = new HashMap<>();
        properties.put(SecurityConstants.USERNAME, "alice");
        properties.put(SecurityConstants.CALLBACK_HANDLER,
                       "org.apache.cxf.systest.sts.common.CommonCallbackHandler");
        properties.put(SecurityConstants.ENCRYPT_USERNAME, "mystskey");
        properties.put(SecurityConstants.ENCRYPT_PROPERTIES, "clientKeystore.properties");
        properties.put("ws-security.is-bsp-compliant", "false");
        stsClient.setProperties(properties);

        return stsClient;
    }

    private static void doubleIt(DoubleItPortType port, int numToDouble) {
        int resp = port.doubleIt(numToDouble);
        assertEquals(numToDouble * 2, resp);
    }
}
