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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                declare(strict_types=1);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace PhpCfdi\Finkok\Helpers;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use DateTimeImmutable;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use DOMDocument;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use LogicException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use PhpCfdi\Credentials\Credential;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use RobRichards\XMLSecLibs\XMLSecurityDSig;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use RobRichards\XMLSecLibs\XMLSecurityKey;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class DocumentSigner  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /** @var string */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $rfc;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /** @var DateTimeImmutable */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $date;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /** @var string */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $content;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct(string $rfc, DateTimeImmutable $date, string $content)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->rfc = $rfc;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->date = $date;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->content = $content;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function rfc(): string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->rfc;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function date(): DateTimeImmutable  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->date;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function content(): string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->content;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function sign(string $certificateFile, string $privateKeyFile, string $passPhrase): string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $credential = Credential::openFiles($certificateFile, $privateKeyFile, $passPhrase);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->signUsingCredential($credential);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    public function signUsingCredential(Credential $credential): string  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $document = $this->createDocumentToSign();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->signDocumentUsingCredential($document, $credential);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return $document->saveXML();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function createDocumentToSign(): DOMDocument  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $document = new DOMDocument('1.0', 'UTF-8'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $root = $document->createElement('documento'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $document->appendChild($root);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $contract = $document->createElement('contrato', $this->content()); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $contract->setAttribute('rfc', $this->rfc()); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $contract->setAttribute('fecha', $this->date()->format('Y-m-d\TH:i:s')); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $root->appendChild($contract);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $document;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function signDocumentUsingCredential(DOMDocument $document, Credential $credential): void  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $root = $document->documentElement;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (null === $root) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw new LogicException('The DOM Document does not contains a root element'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $objDSig = new XMLSecurityDSig();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $objDSig->setCanonicalMethod(XMLSecurityDSig::EXC_C14N);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $objDSig->addReference(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $document,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            XMLSecurityDSig::SHA1,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ['http://www.w3.org/2000/09/xmldsig#enveloped-signature'],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ['force_uri' => true]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $objKey = new XMLSecurityKey(XMLSecurityKey::RSA_SHA1, ['type' => 'private']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $objKey->passphrase = $credential->privateKey()->passPhrase(); // set passphrase before loading key  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $objKey->loadKey($credential->privateKey()->pem(), false, false);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $objDSig->sign($objKey);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $objDSig->add509Cert($credential->certificate()->pem(), true, false);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $objDSig->appendSignature($root);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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