content: // 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.cloudstack.api.command;
  
  import com.cloud.domain.DomainVO;
  import com.cloud.user.Account;
  import com.cloud.user.AccountService;
  import com.cloud.user.User;
  import com.cloud.user.UserAccount;
  import org.apache.cloudstack.acl.RoleType;
  import org.apache.cloudstack.api.APICommand;
  import org.apache.cloudstack.api.ApiConstants;
  import org.apache.cloudstack.api.ApiErrorCode;
  import org.apache.cloudstack.api.BaseCmd;
  import org.apache.cloudstack.api.Parameter;
  import org.apache.cloudstack.api.ResponseObject.ResponseView;
  import org.apache.cloudstack.api.ServerApiException;
  import org.apache.cloudstack.api.response.AccountResponse;
  import org.apache.cloudstack.api.response.DomainResponse;
  import org.apache.cloudstack.api.response.RoleResponse;
  import org.apache.cloudstack.context.CallContext;
  import org.apache.cloudstack.ldap.LdapManager;
  import org.apache.cloudstack.ldap.LdapUser;
  import org.apache.cloudstack.ldap.NoLdapUserMatchingQueryException;
  import org.bouncycastle.util.encoders.Base64;
  
  import javax.inject.Inject;
  import java.io.UnsupportedEncodingException;
  import java.security.NoSuchAlgorithmException;
  import java.security.SecureRandom;
  import java.util.Map;
  
  @APICommand(name = "ldapCreateAccount", description = "Creates an account from an LDAP user", responseObject = AccountResponse.class, since = "4.2.0", requestHasSensitiveInfo = false, responseHasSensitiveInfo = false)
  public class LdapCreateAccountCmd extends BaseCmd {
      private static final String s_name = "createaccountresponse";
  
      @Inject
      private LdapManager _ldapManager;
  
      @Parameter(name = ApiConstants.ACCOUNT, type = CommandType.STRING, description = "Creates the user under the specified account. If no account is specified, the username will be used as the account name.")
      private String accountName;
  
      @Parameter(name = ApiConstants.ACCOUNT_TYPE, type = CommandType.INTEGER, description = "Type of the account. Specify 0 for user, 1 for root admin, and 2 for domain admin")
      private Integer accountType;
  
      @Parameter(name = ApiConstants.ROLE_ID, type = CommandType.UUID, entityType = RoleResponse.class, description = "Creates the account under the specified role.")
      private Long roleId;
  
      @Parameter(name = ApiConstants.DOMAIN_ID, type = CommandType.UUID, entityType = DomainResponse.class, description = "Creates the user under the specified domain.")
      private Long domainId;
  
      @Parameter(name = ApiConstants.TIMEZONE, type = CommandType.STRING, description = "Specifies a timezone for this command. For more information on the timezone parameter, see Time Zone Format.")
      private String timezone;
  
      @Parameter(name = ApiConstants.USERNAME, type = CommandType.STRING, required = true, description = "Unique username.")
      private String username;
  
      @Parameter(name = ApiConstants.NETWORK_DOMAIN, type = CommandType.STRING, description = "Network domain for the account's networks")
      private String networkDomain;
  
      @Parameter(name = ApiConstants.ACCOUNT_DETAILS, type = CommandType.MAP, description = "details for account used to store specific parameters")
      private Map<String, String> details;
  
      @Parameter(name = ApiConstants.ACCOUNT_ID, type = CommandType.STRING, description = "Account UUID, required for adding account from external provisioning system")
      private String accountUUID;
  
      @Parameter(name = ApiConstants.USER_ID, type = CommandType.STRING, description = "User UUID, required for adding account from external provisioning system")
      private String userUUID;
  
      public LdapCreateAccountCmd() {
          super();
      }
  
      public LdapCreateAccountCmd(final LdapManager ldapManager, final AccountService accountService) {
          super();
          _ldapManager = ldapManager;
          _accountService = accountService;
      }
  
      UserAccount createCloudstackUserAccount(final LdapUser user, String accountName, Long domainId) {
          Account account = _accountService.getActiveAccountByName(accountName, domainId);
          if (account == null) {
              return _accountService.createUserAccount(username, generatePassword(), user.getFirstname(), user.getLastname(), user.getEmail(), timezone, accountName, getAccountType(), getRoleId(),
                      domainId, networkDomain, details, accountUUID, userUUID, User.Source.LDAP);
          } else {
              User newUser = _accountService.createUser(username, generatePassword(), user.getFirstname(), user.getLastname(), user.getEmail(), timezone, accountName, domainId,
                      userUUID, User.Source.LDAP);
              return _accountService.getUserAccountById(newUser.getId());
          }
      }
  
      public Account.Type getAccountType() {
          if (accountType == null) {
              return RoleType.getAccountTypeByRole(roleService.findRole(roleId), null);
          }
          return RoleType.getAccountTypeByRole(roleService.findRole(roleId), Account.Type.getFromValue(accountType.intValue()));
      }
  
      public Long getRoleId() {
          return RoleType.getRoleByAccountType(roleId, getAccountType());
      }
  
      private String getAccountName() {
          String name = accountName;
          if (accountName == null) {
              name = username;
          }
          return name;
      }
  
      private Long getDomainId() {
          Long id = domainId;
          if (id == null) {
              id = DomainVO.ROOT_DOMAIN;
          }
          return id;
      }
  
      @Override
      public void execute() throws ServerApiException {
          if (getAccountType() == null && getRoleId() == null) {
              throw new ServerApiException(ApiErrorCode.PARAM_ERROR, "Both account type and role ID are not provided");
          }
          final CallContext callContext = getCurrentContext();
          String finalAccountName = getAccountName();
          Long finalDomainId = getDomainId();
          callContext.setEventDetails("Account Name: " + finalAccountName + ", Domain Id:" + finalDomainId);
          try {
              final LdapUser user = _ldapManager.getUser(username, domainId);
              validateUser(user);
              final UserAccount userAccount = createCloudstackUserAccount(user, finalAccountName, finalDomainId);
              if (userAccount != null) {
                  final AccountResponse response = _responseGenerator.createUserAccountResponse(ResponseView.Full, userAccount);
                  response.setResponseName(getCommandName());
                  setResponseObject(response);
              } else {
                  throw new ServerApiException(ApiErrorCode.INTERNAL_ERROR, "Failed to create a user account");
              }
          } catch (NoLdapUserMatchingQueryException e) {
              throw new ServerApiException(ApiErrorCode.RESOURCE_UNAVAILABLE_ERROR, "No LDAP user exists with the username of " + username);
          }
      }
  
      private String generatePassword() throws ServerApiException {
          try {
              final SecureRandom randomGen = SecureRandom.getInstance("SHA1PRNG");
              final byte bytes[] = new byte[20];
              randomGen.nextBytes(bytes);
              return new String(Base64.encode(bytes), "UTF-8");
          } catch (NoSuchAlgorithmException | UnsupportedEncodingException e) {
              throw new ServerApiException(ApiErrorCode.INTERNAL_ERROR, "Failed to generate random password");
          }
      }
  
      @Override
      public String getCommandName() {
          return s_name;
      }
  
      CallContext getCurrentContext() {
          return CallContext.current();
      }
  
      @Override
      public long getEntityOwnerId() {
          return Account.ACCOUNT_ID_SYSTEM;
      }
  
      private boolean validateUser(final LdapUser user) throws ServerApiException {
          if (user.getEmail() == null) {
              throw new ServerApiException(ApiErrorCode.RESOURCE_UNAVAILABLE_ERROR, username + " has no email address set within LDAP");
          }
          if (user.getFirstname() == null) {
              throw new ServerApiException(ApiErrorCode.RESOURCE_UNAVAILABLE_ERROR, username + " has no firstname set within LDAP");
          }
          if (user.getLastname() == null) {
              throw new ServerApiException(ApiErrorCode.RESOURCE_UNAVAILABLE_ERROR, username + " has no lastname set within LDAP");
          }
          return true;
      }
  }
  