content: /*
   * Copyright 1999-2024 Alibaba Group Holding Ltd.
   *
   * Licensed 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 com.alibaba.nacos.plugin.auth.impl.controller.v3;
  
  import com.alibaba.nacos.api.common.Constants;
  import com.alibaba.nacos.api.model.Page;
  import com.alibaba.nacos.api.model.v2.ErrorCode;
  import com.alibaba.nacos.api.model.v2.Result;
  import com.alibaba.nacos.auth.annotation.Secured;
  import com.alibaba.nacos.plugin.auth.impl.configuration.AuthConfigs;
  import com.alibaba.nacos.auth.config.NacosAuthConfigHolder;
  import com.alibaba.nacos.common.utils.JacksonUtils;
  import com.alibaba.nacos.common.utils.StringUtils;
  import com.alibaba.nacos.core.context.RequestContextHolder;
  import com.alibaba.nacos.plugin.auth.api.IdentityContext;
  import com.alibaba.nacos.plugin.auth.constant.ActionTypes;
  import com.alibaba.nacos.plugin.auth.exception.AccessException;
  import com.alibaba.nacos.plugin.auth.impl.authenticate.IAuthenticationManager;
  import com.alibaba.nacos.plugin.auth.impl.constant.AuthConstants;
  import com.alibaba.nacos.plugin.auth.impl.constant.AuthSystemTypes;
  import com.alibaba.nacos.plugin.auth.impl.persistence.RoleInfo;
  import com.alibaba.nacos.plugin.auth.impl.persistence.User;
  import com.alibaba.nacos.plugin.auth.impl.roles.NacosRoleService;
  import com.alibaba.nacos.plugin.auth.impl.token.TokenManagerDelegate;
  import com.alibaba.nacos.plugin.auth.impl.users.NacosUser;
  import com.alibaba.nacos.plugin.auth.impl.users.NacosUserService;
  import com.alibaba.nacos.plugin.auth.impl.utils.PasswordGeneratorUtil;
  import com.fasterxml.jackson.databind.node.ObjectNode;
  import jakarta.servlet.http.HttpServletRequest;
  import jakarta.servlet.http.HttpServletResponse;
  import org.springframework.http.HttpStatus;
  import org.springframework.web.HttpSessionRequiredException;
  import org.springframework.web.bind.annotation.DeleteMapping;
  import org.springframework.web.bind.annotation.GetMapping;
  import org.springframework.web.bind.annotation.PostMapping;
  import org.springframework.web.bind.annotation.PutMapping;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.RequestParam;
  import org.springframework.web.bind.annotation.RestController;
  
  import java.io.IOException;
  import java.util.List;
  
  /**
   * Controller for handling HTTP requests related to user operations.
   *
   * @author zhangyukun on:2024/8/16
   */
  @RestController
  @RequestMapping(AuthConstants.USER_PATH)
  public class UserControllerV3 {
      
      private final NacosUserService userDetailsService;
      
      private final NacosRoleService roleService;
      
      private final AuthConfigs authConfigs;
      
      private final IAuthenticationManager iAuthenticationManager;
      
      private final TokenManagerDelegate jwtTokenManager;
      
      private static final String SEARCH_TYPE_BLUR = "blur";
      
      /**
       * Constructs a new UserInnerHandler with the provided dependencies.
       *
       * @param userDetailsService     the service for user details operations
       * @param roleService            the service for role operations
       * @param authConfigs            the authentication configuration
       * @param iAuthenticationManager the authentication manager interface
       * @param jwtTokenManager        the JWT token manager
       */
      public UserControllerV3(NacosUserService userDetailsService, NacosRoleService roleService, AuthConfigs authConfigs,
              IAuthenticationManager iAuthenticationManager, TokenManagerDelegate jwtTokenManager) {
          this.userDetailsService = userDetailsService;
          this.roleService = roleService;
          this.authConfigs = authConfigs;
          this.iAuthenticationManager = iAuthenticationManager;
          this.jwtTokenManager = jwtTokenManager;
      }
      
      /**
       * Create a new user.
       *
       * @param username username
       * @param password password
       * @return ok if create succeed
       * @throws IllegalArgumentException if user already exist
       * @since 1.2.0
       */
      @Secured(resource = AuthConstants.CONSOLE_RESOURCE_NAME_PREFIX + "users", action = ActionTypes.WRITE)
      @PostMapping
      public Result<String> createUser(@RequestParam String username, @RequestParam String password) {
          User user = userDetailsService.getUser(username);
          if (user != null) {
              throw new IllegalArgumentException("user '" + username + "' already exist!");
          }
          userDetailsService.createUser(username, password);
          return Result.success("create user ok!");
      }
      
      /**
       * Create a admin user only not exist admin user can use.
       */
      @PostMapping("/admin")
      public Result<User> createAdminUser(@RequestParam(required = false) String password) {
          
          if (StringUtils.isBlank(password)) {
              password = PasswordGeneratorUtil.generateRandomPassword();
          }
          
          if (AuthSystemTypes.NACOS.name().equalsIgnoreCase(authConfigs.getNacosAuthSystemType())) {
              if (iAuthenticationManager.hasGlobalAdminRole()) {
                  return Result.failure(HttpStatus.CONFLICT.value(), "have admin user cannot use it.", null);
              }
              String username = AuthConstants.DEFAULT_USER;
              userDetailsService.createUser(username, password);
              roleService.addAdminRole(username);
              User result = new User();
              result.setUsername(username);
              result.setPassword(password);
              return Result.success(result);
          } else {
              return Result.failure(HttpStatus.NOT_IMPLEMENTED.value(),
                      "Current auth type not supported create admin user.", null);
          }
      }
      
      /**
       * Delete an existed user.
       *
       * @param username username of user
       * @return ok if deleted succeed, keep silent if user not exist
       * @since 1.2.0
       */
      @DeleteMapping
      @Secured(resource = AuthConstants.CONSOLE_RESOURCE_NAME_PREFIX + "users", action = ActionTypes.WRITE)
      public Result<String> deleteUser(@RequestParam String username) {
          List<RoleInfo> roleInfoList = roleService.getRoles(username);
          if (roleInfoList != null) {
              for (RoleInfo roleInfo : roleInfoList) {
                  if (AuthConstants.GLOBAL_ADMIN_ROLE.equals(roleInfo.getRole())) {
                      throw new IllegalArgumentException("cannot delete admin: " + username);
                  }
              }
          }
          userDetailsService.deleteUser(username);
          return Result.success("delete user ok!");
      }
      
      /**
       * Update an user.
       *
       * @param username    username of user
       * @param newPassword new password of user
       * @param response    http response
       * @param request     http request
       * @return ok if update succeed
       * @throws IllegalArgumentException if user not exist or oldPassword is incorrect
       * @since 1.2.0
       */
      @PutMapping
      @Secured(resource = AuthConstants.UPDATE_PASSWORD_ENTRY_POINT, action = ActionTypes.WRITE, tags = {
              com.alibaba.nacos.plugin.auth.constant.Constants.Tag.ONLY_IDENTITY, AuthConstants.UPDATE_PASSWORD_ENTRY_POINT})
      public Result<String> updateUser(@RequestParam String username, @RequestParam String newPassword,
              HttpServletResponse response, HttpServletRequest request) throws IOException {
          try {
              if (!hasPermission(username, request)) {
                  response.sendError(HttpServletResponse.SC_FORBIDDEN, "authorization failed!");
                  return null;
              }
          } catch (HttpSessionRequiredException e) {
              response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "session expired!");
              return null;
          } catch (AccessException exception) {
              response.sendError(HttpServletResponse.SC_FORBIDDEN, "authorization failed!");
              return null;
          }
          
          User user = userDetailsService.getUser(username);
          if (user == null) {
              throw new IllegalArgumentException("user " + username + " not exist!");
          }
          
          userDetailsService.updateUserPassword(username, newPassword);
          return Result.success("update user ok!");
          
      }
      
      private boolean hasPermission(String username, HttpServletRequest request)
              throws HttpSessionRequiredException, AccessException {
          if (!NacosAuthConfigHolder.getInstance().isAnyAuthEnabled()) {
              return true;
          }
          IdentityContext identityContext = RequestContextHolder.getContext().getAuthContext().getIdentityContext();
          if (identityContext == null) {
              throw new HttpSessionRequiredException("session expired!");
          }
          NacosUser user = (NacosUser) identityContext.getParameter(AuthConstants.NACOS_USER_KEY);
          if (user == null) {
              user = iAuthenticationManager.authenticate(request);
              if (user == null) {
                  throw new HttpSessionRequiredException("session expired!");
              }
              //get user form jwt need check permission
              iAuthenticationManager.hasGlobalAdminRole(user);
          }
          // admin
          if (user.isGlobalAdmin()) {
              return true;
          }
          // same user
          return user.getUserName().equals(username);
      }
      
      /**
       * Get paged users with the option for accurate or fuzzy search.
       *
       * @param pageNo   number index of page
       * @param pageSize size of page
       * @param username the username to search for, can be an empty string
       * @param search   the type of search: "accurate" for exact match, "blur" for fuzzy match
       * @return A collection of users, empty set if no user is found
       * @since 1.2.0
       */
      @GetMapping("/list")
      @Secured(resource = AuthConstants.CONSOLE_RESOURCE_NAME_PREFIX + "users", action = ActionTypes.READ)
      public Result<Page<User>> getUserList(@RequestParam int pageNo, @RequestParam int pageSize,
              @RequestParam(name = "username", required = false, defaultValue = "") String username,
              @RequestParam(name = "search", required = false, defaultValue = "accurate") String search) {
          Page<User> userPage;
          if (SEARCH_TYPE_BLUR.equalsIgnoreCase(search)) {
              userPage = userDetailsService.findUsers(username, pageNo, pageSize);
          } else {
              userPage = userDetailsService.getUsers(pageNo, pageSize, username);
          }
          return Result.success(userPage);
      }
      
      /**
       * Fuzzy matching username.
       *
       * @param username username
       * @return Matched username
       */
      @GetMapping("/search")
      @Secured(resource = AuthConstants.CONSOLE_RESOURCE_NAME_PREFIX + "users", action = ActionTypes.WRITE)
      public Result<List<String>> getUserListByUsername(@RequestParam String username) {
          List<String> userList = userDetailsService.findUserNames(username);
          return Result.success(userList);
      }
      
      /**
       * Login to Nacos
       *
       * <p>This methods uses username and password to require a new token.
       *
       * @param response http response
       * @param request  http request
       * @return new token of the user
       * @throws AccessException if user info is incorrect
       */
      @PostMapping("/login")
      public Object login(HttpServletResponse response, HttpServletRequest request) throws AccessException, IOException {
          if (AuthSystemTypes.NACOS.name().equalsIgnoreCase(authConfigs.getNacosAuthSystemType())
                  || AuthSystemTypes.LDAP.name().equalsIgnoreCase(authConfigs.getNacosAuthSystemType())) {
              
              NacosUser user = iAuthenticationManager.authenticate(request);
              
              response.addHeader(AuthConstants.AUTHORIZATION_HEADER, AuthConstants.TOKEN_PREFIX + user.getToken());
              
              ObjectNode result = JacksonUtils.createEmptyJsonNode();
              result.put(Constants.ACCESS_TOKEN, user.getToken());
              result.put(Constants.TOKEN_TTL, jwtTokenManager.getTokenTtlInSeconds(user.getToken()));
              result.put(Constants.GLOBAL_ADMIN, iAuthenticationManager.hasGlobalAdminRole(user));
              result.put(Constants.USERNAME, user.getUserName());
              return result;
          }
          return Result.failure(ErrorCode.ILLEGAL_STATE.getCode(),
                  "Current Nacos auth plugin type is not `nacos` or `nacos-ldap`, don't support login API.", null);
      }
  }
  
  