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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /*  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * The MIT License (MIT)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Copyright (c) 2014-2017 Spomky-Labs  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This software may be modified and distributed under the terms  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * of the MIT license.  See the LICENSE file for details.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Jose\Object;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Class RotatableJWKSet.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                final class RotatableJWKSet extends StorableJWKSet implements RotatableInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Interval at which keys should be rotated.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var int|null  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $interval;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * RotatableJWKSet constructor.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string   $filename  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array    $parameters  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param int      $nb_keys  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param int|null $interval  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct($filename, array $parameters, $nb_keys, $interval = null)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        parent::__construct($filename, $parameters, $nb_keys);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->interval = $interval;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * {@inheritdoc} | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getJWKSet()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        // Check if we need to rotate keys upon every interaction with the underlying JWK set  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->rotateIfNeeded();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return parent::getJWKSet();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * {@inheritdoc} | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function rotate()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $jwkset = parent::getJWKSet();  | 
            
                            
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                        // Remove last key in set  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $jwkset->removeKey($jwkset->countKeys() - 1);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        // Prepend new key to set  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $jwkset->prependKey($this->createJWK());  | 
            
                            
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                        // Save new key set  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->saveObject($jwkset);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Rotate key set if last modification time is due.  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                        
            
                                    
            
            
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                    private function rotateIfNeeded()  | 
            
            
                                                        
            
                                    
            
            
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                    { | 
            
            
                                                        
            
                                    
            
            
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                        if (isset($this->interval) && $this->interval >= 0) { | 
            
            
                                                        
            
                                    
            
            
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                            $modificationTime = $this->getLastModificationTime();  | 
            
            
                                                        
            
                                    
            
            
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                            if (null === $modificationTime) { | 
            
            
                                                        
            
                                    
            
            
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                                $this->regen();  | 
            
            
                                                        
            
                                    
            
            
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                            } elseif (($modificationTime + $this->interval) < time()) { | 
            
            
                                                        
            
                                    
            
            
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                                $this->rotate();  | 
            
            
                                                        
            
                                    
            
            
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                            }  | 
            
            
                                                        
            
                                    
            
            
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                        }  | 
            
            
                                                        
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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This check looks for a call to a parent method whose name is different than the method from which it is called.
Consider the following code:
The
getFirstName()method in theSoncalls the wrong method in the parent class.