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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace NFePHP\Common;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use NFePHP\Common\Exception\CertificateException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class Certificate  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public $companyName;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public $privateKey;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public $publicKey;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var \DateTime  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public $validFrom;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var \DateTime  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public $validTo;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct($content, $password = '')  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->read($content, $password);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->load();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private function read($content, $password)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $certs = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!openssl_pkcs12_read($content, $certs, $password)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw CertificateException::unableToRead();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->privateKey = $certs['pkey'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->publicKey = $certs['cert'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private function load()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!$resource = openssl_x509_read($this->publicKey)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw CertificateException::unableToOpen();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $detail = openssl_x509_parse($resource, false);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->companyName = $detail['subject']['organizationName'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->validFrom = \DateTime::createFromFormat('ymdHis\Z', $detail['validFrom']); | 
            
                            
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                        $this->validTo = \DateTime::createFromFormat('ymdHis\Z', $detail['validTo']); | 
            
                            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Check if certificate has been expired.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return bool Returns true when it is truth, otherwise false.  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function isExpired()  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $now = new \DateTime('now'); | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return $this->validFrom <= $now && $this->validTo >= $now;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function encrypt($content, $algorithm = OPENSSL_ALGO_SHA1)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!$privateResource = openssl_pkey_get_private($this->privateKey)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw CertificateException::getPrivateKey();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $encryptedData = '';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!openssl_sign($content, $encryptedData, $privateResource, $algorithm)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw CertificateException::signContent();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $encryptedData;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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Our type inference engine has found a suspicous assignment of a value to a property. This check raises an issue when a value that can be of a mixed type is assigned to a property that is type hinted more strictly.
For example, imagine you have a variable
$accountIdthat can either hold an Id object or false (if there is no account id yet). Your code now assigns that value to theidproperty of an instance of theAccountclass. This class holds a proper account, so the id value must no longer be false.Either this assignment is in error or a type check should be added for that assignment.