/*
 * 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.geode.management.internal.cli.commands;

import static org.apache.geode.distributed.ConfigurationProperties.SSL_CIPHERS;
import static org.apache.geode.distributed.ConfigurationProperties.SSL_ENABLED_COMPONENTS;
import static org.apache.geode.distributed.ConfigurationProperties.SSL_KEYSTORE;
import static org.apache.geode.distributed.ConfigurationProperties.SSL_KEYSTORE_PASSWORD;
import static org.apache.geode.distributed.ConfigurationProperties.SSL_KEYSTORE_TYPE;
import static org.apache.geode.distributed.ConfigurationProperties.SSL_PROTOCOLS;
import static org.apache.geode.distributed.ConfigurationProperties.SSL_TRUSTSTORE;
import static org.apache.geode.distributed.ConfigurationProperties.SSL_TRUSTSTORE_PASSWORD;
import static org.apache.geode.distributed.ConfigurationProperties.SSL_TRUSTSTORE_TYPE;
import static org.apache.geode.test.util.ResourceUtils.createTempFileFromResource;
import static org.assertj.core.api.Assertions.assertThat;

import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.util.Properties;

import org.junit.Before;
import org.junit.ClassRule;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.rules.TemporaryFolder;

import org.apache.geode.security.SecurableCommunicationChannels;
import org.apache.geode.test.dunit.IgnoredException;
import org.apache.geode.test.dunit.rules.CleanupDUnitVMsRule;
import org.apache.geode.test.dunit.rules.ClusterStartupRule;
import org.apache.geode.test.dunit.rules.MemberVM;
import org.apache.geode.test.junit.categories.GfshTest;
import org.apache.geode.test.junit.rules.GfshCommandRule;

@Category({GfshTest.class})
public class ConnectCommandWithSSLTest {
  @ClassRule
  public static CleanupDUnitVMsRule cleanupDUnitVMsRule = new CleanupDUnitVMsRule();

  private static final File jks;

  static {
    /*
     * This file was generated with the following command:
     * keytool -genkey -dname "CN=localhost" -alias self -validity 3650 -keyalg EC \
     * -keystore trusted.keystore -keypass password -storepass password \
     * -ext san=ip:127.0.0.1 -storetype jks
     */

    jks = new File(createTempFileFromResource(ConnectCommandWithSSLTest.class.getClassLoader(),
        "ssl/trusted.keystore").getAbsolutePath());
  }

  private static final Properties sslProperties = new Properties() {
    {
      setProperty(SSL_ENABLED_COMPONENTS, SecurableCommunicationChannels.ALL);
      setProperty(SSL_KEYSTORE, jks.getAbsolutePath());
      setProperty(SSL_KEYSTORE_PASSWORD, "password");
      setProperty(SSL_KEYSTORE_TYPE, "JKS");
      setProperty(SSL_TRUSTSTORE, jks.getAbsolutePath());
      setProperty(SSL_TRUSTSTORE_PASSWORD, "password");
      setProperty(SSL_TRUSTSTORE_TYPE, "JKS");
      setProperty(SSL_CIPHERS, "any");
      setProperty(SSL_PROTOCOLS, "any");
    }
  };

  @SuppressWarnings("deprecation")
  private static final Properties jmxSslProperties = new Properties() {
    {
      setProperty(org.apache.geode.distributed.ConfigurationProperties.JMX_MANAGER_SSL_ENABLED,
          "true");
      setProperty(org.apache.geode.distributed.ConfigurationProperties.JMX_MANAGER_SSL_KEYSTORE,
          jks.getAbsolutePath());
      setProperty(
          org.apache.geode.distributed.ConfigurationProperties.JMX_MANAGER_SSL_KEYSTORE_PASSWORD,
          "password");
      setProperty(
          org.apache.geode.distributed.ConfigurationProperties.JMX_MANAGER_SSL_KEYSTORE_TYPE,
          "JKS");
      setProperty(org.apache.geode.distributed.ConfigurationProperties.JMX_MANAGER_SSL_TRUSTSTORE,
          jks.getAbsolutePath());
      setProperty(
          org.apache.geode.distributed.ConfigurationProperties.JMX_MANAGER_SSL_TRUSTSTORE_PASSWORD,
          "password");
      setProperty(org.apache.geode.distributed.ConfigurationProperties.JMX_MANAGER_SSL_CIPHERS,
          "any");
      setProperty(org.apache.geode.distributed.ConfigurationProperties.JMX_MANAGER_SSL_PROTOCOLS,
          "any");
    }
  };

  @SuppressWarnings("deprecation")
  private static final Properties clusterSslProperties = new Properties() {
    {
      setProperty(org.apache.geode.distributed.ConfigurationProperties.CLUSTER_SSL_ENABLED, "true");
      setProperty(org.apache.geode.distributed.ConfigurationProperties.CLUSTER_SSL_KEYSTORE,
          jks.getAbsolutePath());
      setProperty(
          org.apache.geode.distributed.ConfigurationProperties.CLUSTER_SSL_KEYSTORE_PASSWORD,
          "password");
      setProperty(org.apache.geode.distributed.ConfigurationProperties.CLUSTER_SSL_KEYSTORE_TYPE,
          "JKS");
      setProperty(org.apache.geode.distributed.ConfigurationProperties.CLUSTER_SSL_TRUSTSTORE,
          jks.getAbsolutePath());
      setProperty(
          org.apache.geode.distributed.ConfigurationProperties.CLUSTER_SSL_TRUSTSTORE_PASSWORD,
          "password");
      setProperty(org.apache.geode.distributed.ConfigurationProperties.CLUSTER_SSL_CIPHERS, "any");
      setProperty(org.apache.geode.distributed.ConfigurationProperties.CLUSTER_SSL_PROTOCOLS,
          "any");
    }
  };

  @SuppressWarnings("deprecation")
  private static final Properties httpSslProperties = new Properties() {
    {
      setProperty(org.apache.geode.distributed.ConfigurationProperties.HTTP_SERVICE_SSL_ENABLED,
          "true");
      setProperty(org.apache.geode.distributed.ConfigurationProperties.HTTP_SERVICE_SSL_KEYSTORE,
          jks.getAbsolutePath());
      setProperty(
          org.apache.geode.distributed.ConfigurationProperties.HTTP_SERVICE_SSL_KEYSTORE_PASSWORD,
          "password");
      setProperty(
          org.apache.geode.distributed.ConfigurationProperties.HTTP_SERVICE_SSL_KEYSTORE_TYPE,
          "JKS");
      setProperty(org.apache.geode.distributed.ConfigurationProperties.HTTP_SERVICE_SSL_TRUSTSTORE,
          jks.getAbsolutePath());
      setProperty(
          org.apache.geode.distributed.ConfigurationProperties.HTTP_SERVICE_SSL_TRUSTSTORE_PASSWORD,
          "password");
      setProperty(org.apache.geode.distributed.ConfigurationProperties.HTTP_SERVICE_SSL_CIPHERS,
          "any");
      setProperty(org.apache.geode.distributed.ConfigurationProperties.HTTP_SERVICE_SSL_PROTOCOLS,
          "any");
    }
  };

  @SuppressWarnings("deprecation")
  private static final Properties httpSslPropertiesSkipValidation = new Properties() {
    {
      setProperty(org.apache.geode.distributed.ConfigurationProperties.HTTP_SERVICE_SSL_ENABLED,
          "true");
    }
  };

  @Rule
  public TemporaryFolder temporaryFolder = new TemporaryFolder();

  @Rule
  public ClusterStartupRule lsRule = new ClusterStartupRule();

  private static MemberVM locator;
  private OutputStream out = null;
  private File sslConfigFile = null;

  @Before
  public void before() throws Exception {
    locator = lsRule.startLocatorVM(0, l -> l.withProperties(sslProperties).withHttpService());
    IgnoredException.addIgnoredException("javax.net.ssl.SSLException: Unrecognized SSL message");
    sslConfigFile = temporaryFolder.newFile("ssl.properties");
    out = new FileOutputStream(sslConfigFile);
  }

  @Rule
  public GfshCommandRule gfsh = new GfshCommandRule();

  @Test
  public void connectWithNoSSL() throws Exception {
    failToConnectWithoutSSLTo(locator.getPort(), GfshCommandRule.PortType.locator);
    // should fail at connecting to locator stage
    assertThat(gfsh.getGfshOutput()).doesNotContain("Connecting to Manager at");
    assertThat(gfsh.getGfshOutput()).containsPattern(
        "trying to connect a non-SSL-enabled client to an SSL-enabled locator|Broken pipe \\(Write failed\\)|Connection reset");

    failToConnectWithoutSSLTo(locator.getJmxPort(), GfshCommandRule.PortType.jmxManager);
    assertThat(gfsh.getGfshOutput()).contains("non-JRMP server at remote endpoint");

    failToConnectWithoutSSLTo(locator.getHttpPort(), GfshCommandRule.PortType.http);
    assertThat(gfsh.getGfshOutput()).contains("Unexpected end of file from server");
  }

  @Test
  public void connectWithSSL() throws Exception {
    connectWithSSLProperties(sslProperties);
  }

  private void connectWithSSLProperties(Properties sslProperties) throws Exception {
    sslProperties.store(out, null);

    connectWithSSLTo(locator.getPort(), GfshCommandRule.PortType.locator);
    gfsh.disconnect();

    connectWithSSLTo(locator.getJmxPort(), GfshCommandRule.PortType.jmxManager);
    gfsh.disconnect();

    connectWithSSLTo(locator.getHttpPort(), GfshCommandRule.PortType.https);
  }

  @Test
  public void connectWithJmxSSL() throws Exception {
    jmxSslProperties.store(out, null);
    // can't connect locator
    failToConnectWithSSLTo(locator.getPort(), GfshCommandRule.PortType.locator);
    assertThat(gfsh.getGfshOutput()).doesNotContain("Connecting to Manager at");
    assertThat(gfsh.getGfshOutput()).containsPattern(
        "trying to connect a non-SSL-enabled client to an SSL-enabled locator|Broken pipe \\(Write failed\\)|Connection reset");


    // can connect to jmx
    connectWithSSLTo(locator.getJmxPort(), GfshCommandRule.PortType.jmxManager);
    gfsh.disconnect();

    // can connect to https
    connectWithSSLTo(locator.getHttpPort(), GfshCommandRule.PortType.https);
  }

  @Test
  /*
   * apparently cluster-ssl-* configurations are copied to jmx-ssl-* and http-server-ssl-*, so
   * connection to other channels will succeed as well. see DistributionConfigImpl around line 986:
   * if (!isConnected) { copySSLPropsToServerSSLProps(); copySSLPropsToJMXSSLProps();
   * copyClusterSSLPropsToGatewaySSLProps(); copySSLPropsToHTTPSSLProps(); }
   */
  public void connectWithClusterSSL() throws Exception {
    connectWithSSLProperties(clusterSslProperties);
  }

  @Test
  public void connectWithHttpSSL() throws Exception {
    httpSslProperties.store(out, null);
    // can connect to locator and jmx
    failToConnectWithSSLTo(locator.getPort(), GfshCommandRule.PortType.locator);

    // cannot connect to jmx
    failToConnectWithSSLTo(locator.getJmxPort(), GfshCommandRule.PortType.jmxManager);

    // can connect to https
    connectWithSSLTo(locator.getHttpPort(), GfshCommandRule.PortType.https);
  }

  @Test
  public void connectWithHttpSSLAndDeprecatedUseHttp() throws Exception {
    httpSslProperties.store(out, null);
    // can connect to locator and jmx
    failToConnectWithSSLTo(locator.getPort(), GfshCommandRule.PortType.locator);

    // can connect to https
    gfsh.connect(locator.getHttpPort(), GfshCommandRule.PortType.https,
        "security-properties-file",
        sslConfigFile.getAbsolutePath(), "use-http", "true");
    assertThat(gfsh.isConnected()).isTrue();
  }

  @Test
  public void connectWithHttpSSLAndSkipSSLValidation() throws Exception {
    httpSslPropertiesSkipValidation.store(out, null);
    // cannot connect to locator and jmx
    failToConnectWithSSLTo(locator.getPort(), GfshCommandRule.PortType.locator);

    // cannot connect to jmx
    failToConnectWithSSLTo(locator.getJmxPort(), GfshCommandRule.PortType.jmxManager);

    // cannot connect to https without skip-ssl-validation
    gfsh.connect(locator.getHttpPort(), GfshCommandRule.PortType.https, "security-properties-file",
        sslConfigFile.getAbsolutePath(), "skip-ssl-validation", "false");
    assertThat(gfsh.isConnected()).isFalse();
    assertThat(gfsh.getGfshOutput())
        .contains("unable to find valid certification path to requested target");

    // can connect to https
    gfsh.connect(locator.getHttpPort(), GfshCommandRule.PortType.https, "security-properties-file",
        sslConfigFile.getAbsolutePath(), "skip-ssl-validation", "true");
    assertThat(gfsh.isConnected()).isTrue();
  }

  @Test
  public void connectWithClusterAndJmxSSL() throws Exception {
    Properties combined = new Properties();
    combined.putAll(jmxSslProperties);
    combined.putAll(clusterSslProperties);
    combined.store(out, null);

    // can connect to both locator and jmx
    connectWithSSLTo(locator.getPort(), GfshCommandRule.PortType.locator);
  }

  @Test
  public void connectWithSSLAndThenWithNoSSL() throws Exception {
    sslProperties.store(out, null);

    // can connect to both locator and jmx
    connectWithSSLTo(locator.getPort(), GfshCommandRule.PortType.locator);
    gfsh.disconnect();

    // reconnect again with no SSL should fail
    failToConnectWithoutSSLTo(locator.getPort(), GfshCommandRule.PortType.locator);
    // it should fail at connecting to locator, not connecting to manager
    assertThat(gfsh.getGfshOutput()).doesNotContain("Connecting to Manager at");
  }

  private void connectWithSSLTo(int port, GfshCommandRule.PortType locator) throws Exception {
    gfsh.connect(port, locator, "security-properties-file",
        sslConfigFile.getAbsolutePath());
    assertThat(gfsh.isConnected()).isTrue();
  }

  private void failToConnectWithSSLTo(int port, GfshCommandRule.PortType locator) throws Exception {
    gfsh.connect(port, locator, "security-properties-file",
        sslConfigFile.getAbsolutePath());
    assertThat(gfsh.isConnected()).isFalse();
  }

  private void failToConnectWithoutSSLTo(int port, GfshCommandRule.PortType locator)
      throws Exception {
    gfsh.connect(port, locator);
    assertThat(gfsh.isConnected()).isFalse();
  }

}