/**
  * Validate the receipt contained in the given XML element using the
  * certificate provided.
  *
  * @param  DOMDocument $dom
  * @param  resource    $certificate
  * @return bool
  */
 protected function validateXml(DOMDocument $dom, $certificate)
 {
     $secDsig = new XMLSecurityDSig();
     // Locate the signature in the receipt XML.
     $dsig = $secDsig->locateSignature($dom);
     if ($dsig === null) {
         throw new RunTimeException('Cannot locate receipt signature');
     }
     $secDsig->canonicalizeSignedInfo();
     $secDsig->idKeys = array('wsu:Id');
     $secDsig->idNS = array('wsu' => 'http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd');
     if (!$secDsig->validateReference()) {
         throw new RunTimeException('Reference validation failed');
     }
     $key = $secDsig->locateKey();
     if ($key === null) {
         throw new RunTimeException('Could not locate key in receipt');
     }
     $keyInfo = XMLSecEnc::staticLocateKeyInfo($key, $dsig);
     if (!$keyInfo->key) {
         $key->loadKey($certificate);
     }
     return $secDsig->verify($key) == 1;
 }
Beispiel #2
0
 /**
  * Try to extract the public key from DOM node.
  *
  * Sets publicKey and keyAlgorithm properties if success.
  *
  * @see publicKey
  * @see keyAlgorithm
  *
  * @param DOMNode $dom
  *
  * @return bool `true` If public key was extracted or `false` if cannot be possible
  */
 protected function setPublicKeyFromNode(DOMNode $dom)
 {
     // try to get the public key from the certificate
     $objXMLSecDSig = new XMLSecurityDSig();
     $objDSig = $objXMLSecDSig->locateSignature($dom);
     if (!$objDSig) {
         return false;
     }
     $objKey = $objXMLSecDSig->locateKey();
     if (!$objKey) {
         return false;
     }
     XMLSecEnc::staticLocateKeyInfo($objKey, $objDSig);
     $this->publicKey = $objKey->getX509Certificate();
     $this->keyAlgorithm = $objKey->getAlgorith();
     return true;
 }
Beispiel #3
0
 public function processSignature($refNode)
 {
     $objXMLSecDSig = new XMLSecurityDSig();
     $objXMLSecDSig->idKeys[] = 'wswsu:Id';
     $objXMLSecDSig->idNS['wswsu'] = self::WSUNS;
     $objXMLSecDSig->sigNode = $refNode;
     /* Canonicalize the signed info */
     $objXMLSecDSig->canonicalizeSignedInfo();
     $retVal = $objXMLSecDSig->validateReference();
     if (!$retVal) {
         throw new Exception('Validation Failed');
     }
     $key = null;
     $objKey = $objXMLSecDSig->locateKey();
     if ($objKey) {
         if ($objKeyInfo = XMLSecEnc::staticLocateKeyInfo($objKey, $refNode)) {
             /* Handle any additional key processing such as encrypted keys here */
         }
     }
     if (empty($objKey)) {
         throw new Exception('Error loading key to handle Signature');
     }
     do {
         if (empty($objKey->key)) {
             $this->SOAPXPath->registerNamespace('xmlsecdsig', XMLSecurityDSig::XMLDSIGNS);
             $query = './xmlsecdsig:KeyInfo/wswsse:SecurityTokenReference/wswsse:Reference';
             $nodeset = $this->SOAPXPath->query($query, $refNode);
             if ($encmeth = $nodeset->item(0)) {
                 if ($uri = $encmeth->getAttribute('URI')) {
                     $arUrl = parse_url($uri);
                     if (empty($arUrl['path']) && ($identifier = $arUrl['fragment'])) {
                         $query = '//wswsse:BinarySecurityToken[@wswsu:Id="' . $identifier . '"]';
                         $nodeset = $this->SOAPXPath->query($query);
                         if ($encmeth = $nodeset->item(0)) {
                             $x509cert = $encmeth->textContent;
                             $x509cert = str_replace(array("\r", "\n"), '', $x509cert);
                             $x509cert = "-----BEGIN CERTIFICATE-----\n" . chunk_split($x509cert, 64, "\n") . "-----END CERTIFICATE-----\n";
                             $objKey->loadKey($x509cert);
                             break;
                         }
                     }
                 }
             }
             throw new Exception('Error loading key to handle Signature');
         }
     } while (0);
     if (!$objXMLSecDSig->verify($objKey)) {
         throw new Exception('Unable to validate Signature');
     }
     return true;
 }