PHP - extendiendo SoapClient para manejar SWA (SOAP con datos adjuntos)

Question

Estoy tratando de manejar las respuestas SWA de un servicio Java SOAP. En esa respuesta SWA hay un archivo adjunto binario adjunto al final del XML junto con algunos encabezados MIME. No puedo usar WSO2 para las limitaciones de requisitos de dependencia.

¡Cualquier ayuda sería muy apreciada!

// Input 

------=_Part_42_539586119.1332526191981 
Content-Type: text/xml; charset=UTF-8 
Content-Transfer-Encoding: binary 
Content-Id: <03B4708A9544C182C43E51D9ADA1E456> 

<?xml version="1.0" encoding="utf-8"?><soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><soapenv:Body> ... TRUNCATED XML SOAP RESPONSE ... </soapenv:Body></soapenv:Envelope> 

------=_Part_42_539586119.1332526191981 
Content-Type: image/png 
Content-Transfer-Encoding: binary 
Content-Id: <D637B1257E3E5EEA06AF0E45494F8448> 

BINARY DATA GOES HERE 


// End of input 

// Guión para dividir la respuesta + Retorno de StdObj como el SoapClient clase padre + hacer algo con los archivos

namespace Project; 
class SoapClient extends \SoapClient 
{ 
    public function __call ($function_name, $arguments) 
    { 
     // have the parent do a soap call, catch the lastResponse() if an error 
     // occurred (eg has an attachment) and parse it out. 
     try { 
      $r = parent::__call($function_name, $arguments); 
      return $r; 
     } catch (\Exception $e) { 
      // Assumption: When this is sent, it means that a file is being sent 
      // because SimpleXML can't process it. 
      if ($e->getMessage() == "looks like we got no XML document") { 
       $response = parent::__getLastResponse(); 
       $partString = "/(------=_[a-zA-Z0-9_\\.]+)/"; 
       $outputArr = preg_split($partString, $response); 
       // $outputAtt[0] -- empty and is the first MIME Part Header 
       // $outputArr[1] -- Mime Header + XML (The SOAP Response) 
       // $outputArr[n+1] -- additional files w/ MIME headers 
       if (array_key_exists(1, $outputArr)) { 
        // remove the first 5 lines (4 MIME Header lines) + 1 Blank 
        // line 
        $data = implode("\n", 
        array_slice(explode("\n", $outputArr[1]), 5)); 

        /// Simple XML Object ... appears to be an empty SimpleXMLElement though ... >:-(
        $xml = simplexml_load_string($data, null, null, "http://schemas.xmlsoap.org/soap/envelope/"); 




       } else { 
        // OK Maybe this doesn't actually contain the XML... throw 
        // the original exception. 
        throw new \SoapFault($e->getMessage(), $e->getCode(), 
        $e->getPrevious()); 
       } 
      } else { 
       throw new \SoapFault($e->getMessage(), $e->getCode(), 
       $e->getPrevious()); 
      } 
     } 
    } 
} 

Answer 1

Utilice un MIME parser para esto. Es bastante simple de allí:

require_once('MimeMailParser.class.php'); 

class SwADownloadSoapClient extends SoapClient 
{ 
    const ATTACHMENT_DIR = '/path/to/saved/attachments/'; 

    public function __doRequest(
     $request, $location, $action, $version, $one_way=0 
    ) { 
     // Issue the SOAP request as SoapClient would normall 
     $sResult = parent::__doRequest(
           $request, $location, $action, $version, $one_way); 

     // Handle and parse MIME-encoded messages 
     // @note We're not doing much inspection 
     //  of the XML payload against the attachments ATM 
     //  so not sure how greatly this lives up to the spec 
     $sResult = $this->_parseMimeMessage($sResult); 

     $oParser = new MimeMailParser(); 
     $oParser->setText($sResult); 

     // Save the attachments 
     $aAttachments = $oParser->getAttachments(); 
     foreach($aAttachments as $oAttachment) { 
      $sFile = $oAttachment->filename; 
      if($rFp = fopen(self::ATTACHMENT_DIR . $sFile, 'w')) { 
       while($sBytes = $attachment->read()) 
        fwrite($rFp, $sBytes); 
       fclose($rFp); 
      } 
     } 
    } 
} 

Si desea implementar más propiamente the spec, tendrá que hacer coincidir los archivos adjuntos MIME contra el XML SOAP.