/*
    * MIT License
    *
    * Copyright (c) 2010-2024 The Waffle Project Contributors: https://github.com/Waffle/waffle/graphs/contributors
    *
    * Permission is hereby granted, free of charge, to any person obtaining a copy
    * of this software and associated documentation files (the "Software"), to deal
    * in the Software without restriction, including without limitation the rights
    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all
   * copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  package waffle.windows.auth;
  
  import static org.assertj.core.api.Assertions.assertThat;
  
  import com.sun.jna.WString;
  import com.sun.jna.platform.win32.Advapi32Util;
  import com.sun.jna.platform.win32.LMAccess;
  import com.sun.jna.platform.win32.LMErr;
  import com.sun.jna.platform.win32.LMJoin;
  import com.sun.jna.platform.win32.Netapi32;
  import com.sun.jna.platform.win32.Netapi32Util;
  import com.sun.jna.platform.win32.Sspi;
  import com.sun.jna.platform.win32.SspiUtil.ManagedSecBufferDesc;
  
  import java.util.Base64;
  
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.Assumptions;
  import org.junit.jupiter.api.Disabled;
  import org.junit.jupiter.api.Test;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import waffle.mock.MockWindowsAccount;
  import waffle.windows.auth.impl.WindowsAccountImpl;
  import waffle.windows.auth.impl.WindowsAuthProviderImpl;
  import waffle.windows.auth.impl.WindowsCredentialsHandleImpl;
  import waffle.windows.auth.impl.WindowsSecurityContextImpl;
  
  /**
   * The Class WindowsAuthProviderTest.
   */
  class WindowsAuthProviderTest {
  
      /** The Constant LOGGER. */
      private static final Logger LOGGER = LoggerFactory.getLogger(WindowsAuthProviderTest.class);
  
      /**
       * Test logon guest user.
       */
      // TODO This was commented out, uncommented and ignore until I can determine if this is valid
      @Disabled
      @Test
      void testLogonGuestUser() {
          final IWindowsAuthProvider prov = new WindowsAuthProviderImpl();
          final IWindowsIdentity identity = prov.logonUser("garbage", "garbage");
          WindowsAuthProviderTest.LOGGER.info("Fqn: {}", identity.getFqn());
          WindowsAuthProviderTest.LOGGER.info("Guest: {}", Boolean.valueOf(identity.isGuest()));
          Assertions.assertTrue(identity.getFqn().endsWith("\\Guest"));
          Assertions.assertTrue(identity.isGuest());
          identity.dispose();
      }
  
      /**
       * Test logon user.
       */
      @Test
      void testLogonUser() {
          final LMAccess.USER_INFO_1 userInfo = new LMAccess.USER_INFO_1();
          userInfo.usri1_name = new WString("WaffleTestUser").toString();
          userInfo.usri1_password = new WString("!WAFFLEP$$Wrd0").toString();
          userInfo.usri1_priv = LMAccess.USER_PRIV_USER;
          // ignore test if not able to add user (need to be administrator to do this).
          Assumptions.assumeTrue(LMErr.NERR_Success == Netapi32.INSTANCE.NetUserAdd(null, 1, userInfo, null));
          try {
              final IWindowsAuthProvider prov = new WindowsAuthProviderImpl();
              final IWindowsIdentity identity = prov.logonUser(userInfo.usri1_name, userInfo.usri1_password.toString());
              Assertions.assertTrue(identity.getFqn().endsWith("\\" + userInfo.usri1_name));
              Assertions.assertFalse(identity.isGuest());
              identity.dispose();
          } finally {
              Assertions.assertEquals(LMErr.NERR_Success, Netapi32.INSTANCE.NetUserDel(null, userInfo.usri1_name));
          }
      }
  
      /**
      * Test impersonate logged on user.
      */
     @Test
     void testImpersonateLoggedOnUser() {
         final LMAccess.USER_INFO_1 userInfo = new LMAccess.USER_INFO_1();
         userInfo.usri1_name = new WString(MockWindowsAccount.TEST_USER_NAME).toString();
         userInfo.usri1_password = new WString(MockWindowsAccount.TEST_PASSWORD).toString();
         userInfo.usri1_priv = LMAccess.USER_PRIV_USER;
         // ignore test if not able to add user (need to be administrator to do this).
         Assumptions.assumeTrue(LMErr.NERR_Success == Netapi32.INSTANCE.NetUserAdd(null, 1, userInfo, null));
         try {
             final IWindowsAuthProvider prov = new WindowsAuthProviderImpl();
             final IWindowsIdentity identity = prov.logonUser(userInfo.usri1_name, userInfo.usri1_password);
             final IWindowsImpersonationContext ctx = identity.impersonate();
             Assertions.assertEquals(userInfo.usri1_name, Advapi32Util.getUserName());
             ctx.revertToSelf();
             Assertions.assertNotEquals(userInfo.usri1_name, Advapi32Util.getUserName());
             identity.dispose();
         } finally {
             Assertions.assertEquals(LMErr.NERR_Success, Netapi32.INSTANCE.NetUserDel(null, userInfo.usri1_name));
         }
     }
 
     /**
      * Test get current computer.
      */
     @Test
     void testGetCurrentComputer() {
         final IWindowsAuthProvider prov = new WindowsAuthProviderImpl();
         final IWindowsComputer computer = prov.getCurrentComputer();
         WindowsAuthProviderTest.LOGGER.info(computer.getComputerName());
         assertThat(computer.getComputerName()).isNotEmpty();
         WindowsAuthProviderTest.LOGGER.info(computer.getJoinStatus());
         WindowsAuthProviderTest.LOGGER.info(computer.getMemberOf());
         final String[] localGroups = computer.getGroups();
         Assertions.assertNotNull(localGroups);
         assertThat(localGroups).isNotEmpty();
         for (final String localGroup : localGroups) {
             WindowsAuthProviderTest.LOGGER.info(" {}", localGroup);
         }
     }
 
     /**
      * Test get domains.
      */
     @Test
     void testGetDomains() {
         if (Netapi32Util.getJoinStatus() != LMJoin.NETSETUP_JOIN_STATUS.NetSetupDomainName) {
             return;
         }
 
         final IWindowsAuthProvider prov = new WindowsAuthProviderImpl();
         final IWindowsDomain[] domains = prov.getDomains();
         Assertions.assertNotNull(domains);
         for (final IWindowsDomain domain : domains) {
             WindowsAuthProviderTest.LOGGER.info("{}: {}", domain.getFqn(), domain.getTrustDirectionString());
         }
     }
 
     /**
      * Test accept security token.
      */
     @Test
     void testAcceptSecurityToken() {
         final String securityPackage = "Negotiate";
         final String targetName = "localhost";
         IWindowsCredentialsHandle clientCredentials = null;
         WindowsSecurityContextImpl clientContext = null;
         IWindowsSecurityContext serverContext = null;
         try {
             // client credentials handle
             clientCredentials = WindowsCredentialsHandleImpl.getCurrent(securityPackage);
             clientCredentials.initialize();
             // initial client security context
             clientContext = new WindowsSecurityContextImpl();
             clientContext.setPrincipalName(WindowsAccountImpl.getCurrentUsername());
             clientContext.setCredentialsHandle(clientCredentials);
             clientContext.setSecurityPackage(securityPackage);
             clientContext.initialize(null, null, targetName);
             // accept on the server
             final WindowsAuthProviderImpl provider = new WindowsAuthProviderImpl();
             final String connectionId = "testConnection-" + Thread.currentThread().getId();
             do {
                 // accept the token on the server
                 serverContext = provider.acceptSecurityToken(connectionId, clientContext.getToken(), securityPackage);
 
                 if (serverContext != null && serverContext.isContinue()) {
                     // initialize on the client
                     final ManagedSecBufferDesc continueToken = new ManagedSecBufferDesc(Sspi.SECBUFFER_TOKEN,
                             serverContext.getToken());
                     clientContext.initialize(clientContext.getHandle(), continueToken, targetName);
                     WindowsAuthProviderTest.LOGGER.info("Token: {}",
                             Base64.getEncoder().encodeToString(serverContext.getToken()));
                 }
 
             } while (serverContext != null && serverContext.isContinue());
 
             if (serverContext != null) {
                 assertThat(serverContext.getIdentity().getFqn()).isNotEmpty();
 
                 WindowsAuthProviderTest.LOGGER.info(serverContext.getIdentity().getFqn());
                 for (final IWindowsAccount group : serverContext.getIdentity().getGroups()) {
                     WindowsAuthProviderTest.LOGGER.info(" {}", group.getFqn());
                 }
             }
         } finally {
             if (serverContext != null) {
                 serverContext.dispose();
             }
             if (clientContext != null) {
                 clientContext.dispose();
             }
             if (clientCredentials != null) {
                 clientCredentials.dispose();
             }
         }
     }
 
     /**
      * Test security contexts expire.
      *
      * @throws InterruptedException
      *             the interrupted exception
      */
     @Test
     void testSecurityContextsExpire() throws InterruptedException {
         final String securityPackage = "Negotiate";
         IWindowsCredentialsHandle clientCredentials = null;
         WindowsSecurityContextImpl clientContext = null;
         IWindowsSecurityContext serverContext = null;
         try {
             // client credentials handle
             clientCredentials = WindowsCredentialsHandleImpl.getCurrent(securityPackage);
             clientCredentials.initialize();
             // initial client security context
             clientContext = new WindowsSecurityContextImpl();
             clientContext.setPrincipalName(WindowsAccountImpl.getCurrentUsername());
             clientContext.setCredentialsHandle(clientCredentials);
             clientContext.setSecurityPackage(securityPackage);
             clientContext.initialize(null, null, WindowsAccountImpl.getCurrentUsername());
             // accept on the server
             final WindowsAuthProviderImpl provider = new WindowsAuthProviderImpl(1);
             final int max = 100;
             for (int i = 0; i < max; i++) {
                 Thread.sleep(25);
                 final String connectionId = "testConnection_" + i;
                 serverContext = provider.acceptSecurityToken(connectionId, clientContext.getToken(), securityPackage);
                 assertThat(provider.getContinueContextsSize()).isPositive();
             }
             WindowsAuthProviderTest.LOGGER.info("Cached security contexts: {}",
                     Integer.valueOf(provider.getContinueContextsSize()));
             Assertions.assertNotEquals(max, provider.getContinueContextsSize());
         } finally {
             if (serverContext != null) {
                 serverContext.dispose();
             }
             if (clientContext != null) {
                 clientContext.dispose();
             }
             if (clientCredentials != null) {
                 clientCredentials.dispose();
             }
         }
     }
 
     /**
      * Test accept and impersonate security token.
      */
     @Test
     void testAcceptAndImpersonateSecurityToken() {
         final String securityPackage = "Negotiate";
         final String targetName = "localhost";
         IWindowsCredentialsHandle clientCredentials = null;
         WindowsSecurityContextImpl clientContext = null;
         IWindowsSecurityContext serverContext = null;
         try {
             // client credentials handle
             clientCredentials = WindowsCredentialsHandleImpl.getCurrent(securityPackage);
             clientCredentials.initialize();
             // initial client security context
             clientContext = new WindowsSecurityContextImpl();
             clientContext.setPrincipalName(WindowsAccountImpl.getCurrentUsername());
             clientContext.setCredentialsHandle(clientCredentials);
             clientContext.setSecurityPackage(securityPackage);
             clientContext.initialize(null, null, targetName);
             // accept on the server
             final WindowsAuthProviderImpl provider = new WindowsAuthProviderImpl();
             final String connectionId = "testConnection";
             do {
                 // accept the token on the server
                 serverContext = provider.acceptSecurityToken(connectionId, clientContext.getToken(), securityPackage);
 
                 if (serverContext != null && serverContext.isContinue()) {
                     // initialize on the client
                     final ManagedSecBufferDesc continueToken = new ManagedSecBufferDesc(Sspi.SECBUFFER_TOKEN,
                             serverContext.getToken());
                     clientContext.initialize(clientContext.getHandle(), continueToken, targetName);
                 }
 
             } while (serverContext != null && serverContext.isContinue());
 
             if (serverContext != null) {
                 assertThat(serverContext.getIdentity().getFqn()).isNotEmpty();
 
                 final IWindowsImpersonationContext impersonationCtx = serverContext.impersonate();
                 impersonationCtx.revertToSelf();
 
                 WindowsAuthProviderTest.LOGGER.info(serverContext.getIdentity().getFqn());
                 for (final IWindowsAccount group : serverContext.getIdentity().getGroups()) {
                     WindowsAuthProviderTest.LOGGER.info(" {}", group.getFqn());
                 }
             }
         } finally {
             if (serverContext != null) {
                 serverContext.dispose();
             }
             if (clientContext != null) {
                 clientContext.dispose();
             }
             if (clientCredentials != null) {
                 clientCredentials.dispose();
             }
         }
     }
 }