| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  | /****************************************************************************** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  |  * Wikipedia Account Creation Assistance tool                                 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  *                                                                            * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  * All code in this file is released into the public domain by the ACC        * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  * Development Team. Please see team.json for a list of contributors.         * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  ******************************************************************************/ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  | namespace Waca\Pages\Request; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  | use Exception; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  | use Waca\DataObjects\Comment; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  | use Waca\DataObjects\Request; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  | use Waca\Exceptions\OptimisticLockFailedException; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  | use Waca\Helpers\BanHelper; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  | use Waca\SessionAlert; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  | use Waca\Tasks\PublicInterfacePageBase; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  | use Waca\Validation\RequestValidationHelper; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  | use Waca\Validation\ValidationError; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  | use Waca\WebRequest; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  | class PageRequestAccount extends PublicInterfacePageBase | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |     /** @var RequestValidationHelper do not use directly. */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |     private $validationHelper; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |      * Main function for this page, when no specific actions are called. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |      * @return void | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |      * @throws OptimisticLockFailedException | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |      * @throws Exception | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |     protected function main() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |         // dual mode page | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |         if (WebRequest::wasPosted()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |             $request = $this->createNewRequest(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |             $comment = $this->createComment(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |             $validationErrors = $this->validateRequest($request); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |             if (count($validationErrors) > 0) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |                 foreach ($validationErrors as $validationError) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |                     SessionAlert::error($validationError->getErrorMessage()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |                 } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |                 // Preserve the data after an error | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |                 WebRequest::setSessionContext('accountReq', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |                     array( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |                         'username' => WebRequest::postString('name'), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |                         'email'    => WebRequest::postEmail('email'), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |                         'comments' => WebRequest::postString('comments'), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |                     ) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |                 ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |                 // Validation error, bomb out early. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |                 $this->redirect(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |                 return; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |             // actually save the request to the database | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |             if ($this->getSiteConfiguration()->getEmailConfirmationEnabled()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |                 $this->saveAsEmailConfirmation($request, $comment); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |             else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |                 $this->saveWithoutEmailConfirmation($request, $comment); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |             $this->getRequestValidationHelper()->postSaveValidations($request); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  |         else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |             // set the form values from the session context | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |             $context = WebRequest::getSessionContext('accountReq'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |             if ($context !== null && is_array($context)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |                 $this->assign('username', $context['username']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |                 $this->assign('email', $context['email']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  |                 $this->assign('comments', $context['comments']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  |             // Clear it for a refresh | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  |             WebRequest::setSessionContext('accountReq', null); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |             $this->setTemplate('request/request-form.tpl'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  |      * @return Request | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  |     protected function createNewRequest() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  |         $request = new Request(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  |         $request->setDatabase($this->getDatabase()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  |         $request->setName(WebRequest::postString('name')); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  |         $request->setEmail(WebRequest::postEmail('email')); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  |         $request->setIp(WebRequest::remoteAddress()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  |         $request->setForwardedIp(WebRequest::forwardedAddress()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  |         $request->setUserAgent(WebRequest::userAgent()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  |         return $request; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  |      * @return Comment|null | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 109 |  |  |      */ | 
            
                                                                        
                            
            
                                    
            
            
                | 110 |  |  |     private function createComment() | 
            
                                                                        
                            
            
                                    
            
            
                | 111 |  |  |     { | 
            
                                                                        
                            
            
                                    
            
            
                | 112 |  |  |         $commentText = WebRequest::postString('comments'); | 
            
                                                                        
                            
            
                                    
            
            
                | 113 |  |  |         if ($commentText === null || trim($commentText) === '') { | 
            
                                                                        
                            
            
                                    
            
            
                | 114 |  |  |             return null; | 
            
                                                                        
                            
            
                                    
            
            
                | 115 |  |  |         } | 
            
                                                                        
                            
            
                                    
            
            
                | 116 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 117 |  |  |         $comment = new Comment(); | 
            
                                                                        
                            
            
                                    
            
            
                | 118 |  |  |         $comment->setDatabase($this->getDatabase()); | 
            
                                                                        
                            
            
                                    
            
            
                | 119 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 120 |  |  |         $comment->setVisibility('requester'); | 
            
                                                                        
                            
            
                                    
            
            
                | 121 |  |  |         $comment->setUser(null); | 
            
                                                                        
                            
            
                                    
            
            
                | 122 |  |  |         $comment->setComment($commentText); | 
            
                                                                        
                            
            
                                    
            
            
                | 123 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 124 |  |  |         return $comment; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  |      * @param Request $request | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 |  |  |      * @return ValidationError[] | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 |  |  |     protected function validateRequest($request) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  |         $validationHelper = $this->getRequestValidationHelper(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  |         // These are arrays of ValidationError. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  |         $nameValidation = $validationHelper->validateName($request); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  |         $emailValidation = $validationHelper->validateEmail($request, WebRequest::postEmail('emailconfirm')); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  |         $otherValidation = $validationHelper->validateOther($request); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  |         $validationErrors = array_merge($nameValidation, $emailValidation, $otherValidation); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  |         return $validationErrors; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  |      * @param Request      $request | 
            
                                                                                                            
                            
            
                                    
            
            
                | 148 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 149 |  |  |      * @param Comment|null $comment | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  |      * @throws OptimisticLockFailedException | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  |      * @throws Exception | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  |     protected function saveAsEmailConfirmation(Request $request, $comment) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  |         $request->generateEmailConfirmationHash(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  |         $request->save(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 |  |  |         if ($comment !== null) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  |             $comment->setRequest($request->getId()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  |             $comment->save(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 |  |  |         $trustedIp = $this->getXffTrustProvider()->getTrustedClientIp( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  |             $request->getIp(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  |             $request->getForwardedIp()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 |  |  |         $this->assign("ip", $trustedIp); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  |         $this->assign("id", $request->getId()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 170 |  |  |         $this->assign("hash", $request->getEmailConfirm()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 171 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 172 |  |  |         // Sends the confirmation email to the user. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 173 |  |  |         $this->getEmailHelper()->sendMail( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 174 |  |  |             $request->getEmail(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 175 |  |  |             "[ACC #{$request->getId()}] English Wikipedia Account Request", | 
            
                                                                                                            
                            
            
                                    
            
            
                | 176 |  |  |             $this->fetchTemplate('request/confirmation-mail.tpl')); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 177 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 178 |  |  |         $this->redirect('emailConfirmationRequired'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 179 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 180 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 181 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 182 |  |  |      * @param Request      $request | 
            
                                                                                                            
                            
            
                                    
            
            
                | 183 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 184 |  |  |      * @param Comment|null $comment | 
            
                                                                                                            
                            
            
                                    
            
            
                | 185 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 186 |  |  |      * @throws OptimisticLockFailedException | 
            
                                                                                                            
                            
            
                                    
            
            
                | 187 |  |  |      * @throws Exception | 
            
                                                                                                            
                            
            
                                    
            
            
                | 188 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 189 |  |  |     protected function saveWithoutEmailConfirmation(Request $request, $comment) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 190 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 191 |  |  |         $request->setEmailConfirm(0); // fixme Since it can't be null | 
            
                                                                                                            
                            
            
                                    
            
            
                | 192 |  |  |         $request->save(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 193 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 194 |  |  |         if ($comment !== null) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 195 |  |  |             $comment->setRequest($request->getId()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 196 |  |  |             $comment->save(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 197 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 198 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 199 |  |  |         $this->getNotificationHelper()->requestReceived($request); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 200 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 201 |  |  |         $this->redirect('requestSubmitted'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 202 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 203 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 204 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 205 |  |  |      * @return RequestValidationHelper | 
            
                                                                                                            
                            
            
                                    
            
            
                | 206 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 207 |  |  |     protected function getRequestValidationHelper(): RequestValidationHelper | 
            
                                                                                                            
                            
            
                                    
            
            
                | 208 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 209 |  |  |         $banHelper = new BanHelper($this->getDatabase(), $this->getXffTrustProvider(), null); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 210 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 211 |  |  |         if($this->validationHelper === null) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 212 |  |  |             $this->validationHelper = new RequestValidationHelper( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 213 |  |  |                 $banHelper, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 214 |  |  |                 $this->getDatabase(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 215 |  |  |                 $this->getAntiSpoofProvider(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 216 |  |  |                 $this->getXffTrustProvider(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 217 |  |  |                 $this->getHttpHelper(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 218 |  |  |                 $this->getTorExitProvider(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 219 |  |  |                 $this->getSiteConfiguration()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 220 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 221 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 222 |  |  |         return $this->validationHelper; | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 223 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 224 |  |  | } |