public function testDecryption()
{
$key = Key::factory(Key::RSA_OAEP_MGF1P, $this->fixturesDir . '/privkey.pem', true, Key::TYPE_PRIVATE);
$tests = array(array('ref' => false, 'file' => 'encrypt_document_element.xml', 'desc' => 'Decrypt document with type ELEMENT'), array('ref' => false, 'file' => 'encrypt_document_content.xml', 'desc' => 'Decrypt document with type CONTENT'), array('ref' => true, 'file' => 'encrypt_document_element_reference.xml', 'desc' => 'Encrypt document with type ELEMENT and key reference'), array('ref' => true, 'file' => 'encrypt_document_content_reference.xml', 'desc' => 'Encrypt document with type CONTENT and key reference'));
foreach ($tests as $test) {
$doc = new DOMDocument();
$doc->load($this->fixturesDir . '/Enc/' . $test['file']);
// get a list of encrypted nodes
$encryptedNodes = Enc::locateEncryptedData($doc);
// decrypt them
foreach ($encryptedNodes as $encryptedNode) {
$decryptionKey = Enc::getSecurityKey($encryptedNode, $key);
Enc::decryptNode($encryptedNode, $decryptionKey);
}
// remove EncryptedKey if still part of XML (CONTENT with referenced key)
$encryptedKey = Enc::locateEncryptedKey($doc);
if (null !== $encryptedKey) {
$encryptedKey->parentNode->removeChild($encryptedKey);
}
$file = $this->fixturesDir . '/Enc/encrypt_document.xml';
$this->assertXmlStringEqualsXmlFile($file, $doc->saveXML(), $test['desc']);
}
}
/**
* Modify the given request XML.
*
* @param \BeSimple\SoapCommon\SoapRequest $request SOAP request
*
* @return void
*/
public function filterRequest(CommonSoapRequest $request)
{
// get \DOMDocument from SOAP request
$dom = $request->getContentDocument();
// locate security header
$security = $dom->getElementsByTagNameNS(Helper::NS_WSS, 'Security')->item(0);
if (null !== $security) {
// is security header still valid?
$query = '//' . Helper::PFX_WSU . ':Timestamp/' . Helper::PFX_WSU . ':Expires';
$xpath = new \DOMXPath($dom);
$xpath->registerNamespace(Helper::PFX_WSU, Helper::NS_WSU);
$expires = $xpath->query($query, $security)->item(0);
if (null !== $expires) {
$expiresDatetime = \DateTime::createFromFormat(static::DATETIME_FORMAT, $expires->textContent, new \DateTimeZone('UTC'));
$currentDatetime = new \DateTime('now', new \DateTimeZone('UTC'));
if ($currentDatetime > $expiresDatetime) {
throw new \SoapFault('wsu:MessageExpired', 'Security semantics are expired');
}
}
$usernameToken = $security->getElementsByTagNameNS(Helper::NS_WSS, 'UsernameToken')->item(0);
if (null !== $usernameToken) {
$usernameTokenUsername = $usernameToken->getElementsByTagNameNS(Helper::NS_WSS, 'Username')->item(0);
$usernameTokenPassword = $usernameToken->getElementsByTagNameNS(Helper::NS_WSS, 'Password')->item(0);
$password = call_user_func($this->usernamePasswordCallback, $usernameTokenUsername->textContent);
if ($usernameTokenPassword->getAttribute('Type') == Helper::NAME_WSS_UTP . '#PasswordDigest') {
$nonce = $usernameToken->getElementsByTagNameNS(Helper::NS_WSS, 'Nonce')->item(0);
$created = $usernameToken->getElementsByTagNameNS(Helper::NS_WSU, 'Created')->item(0);
$password = base64_encode(sha1(base64_decode($nonce->textContent) . $created->textContent . $password, true));
}
if (null === $password || $usernameTokenPassword->textContent != $password) {
throw new \SoapFault('wsse:FailedAuthentication', 'The security token could not be authenticated or authorized');
}
}
// add SecurityTokenReference resolver for KeyInfo
$keyResolver = array($this, 'keyInfoSecurityTokenReferenceResolver');
XmlSecurityDSig::addKeyInfoResolver(Helper::NS_WSS, 'SecurityTokenReference', $keyResolver);
// do we have a reference list in header
$referenceList = XmlSecurityEnc::locateReferenceList($security);
// get a list of encrypted nodes
$encryptedNodes = XmlSecurityEnc::locateEncryptedData($dom, $referenceList);
// decrypt them
if (null !== $encryptedNodes) {
foreach ($encryptedNodes as $encryptedNode) {
XmlSecurityEnc::decryptNode($encryptedNode);
}
}
// locate signature node
$signature = XmlSecurityDSig::locateSignature($security);
if (null !== $signature) {
// verify references
$options = array('id_ns_prefix' => Helper::PFX_WSU, 'id_prefix_ns' => Helper::NS_WSU);
if (XmlSecurityDSig::verifyReferences($signature, $options) !== true) {
throw new \SoapFault('wsse:FailedCheck', 'The signature or decryption was invalid');
}
// verify signature
if (XmlSecurityDSig::verifyDocumentSignature($signature) !== true) {
throw new \SoapFault('wsse:FailedCheck', 'The signature or decryption was invalid');
}
}
$security->parentNode->removeChild($security);
}
}
/**
* Modify the given request XML.
*
* @param \BeSimple\SoapCommon\SoapResponse $response SOAP response
*
* @return void
*/
public function filterResponse(CommonSoapResponse $response)
{
// get \DOMDocument from SOAP response
$dom = $response->getContentDocument();
// locate security header
$security = $dom->getElementsByTagNameNS(Helper::NS_WSS, 'Security')->item(0);
if (null !== $security) {
// add SecurityTokenReference resolver for KeyInfo
$keyResolver = array($this, 'keyInfoSecurityTokenReferenceResolver');
XmlSecurityDSig::addKeyInfoResolver(Helper::NS_WSS, 'SecurityTokenReference', $keyResolver);
// do we have a reference list in header
$referenceList = XmlSecurityEnc::locateReferenceList($security);
// get a list of encrypted nodes
$encryptedNodes = XmlSecurityEnc::locateEncryptedData($dom, $referenceList);
// decrypt them
if (null !== $encryptedNodes) {
foreach ($encryptedNodes as $encryptedNode) {
XmlSecurityEnc::decryptNode($encryptedNode);
}
}
// locate signature node
$signature = XmlSecurityDSig::locateSignature($security);
if (null !== $signature) {
// verify references
$options = array('id_ns_prefix' => Helper::PFX_WSU, 'id_prefix_ns' => Helper::NS_WSU);
if (XmlSecurityDSig::verifyReferences($signature, $options) !== true) {
throw new \SoapFault('wsse:FailedCheck', 'The signature or decryption was invalid');
}
// verify signature
if (XmlSecurityDSig::verifyDocumentSignature($signature) !== true) {
throw new \SoapFault('wsse:FailedCheck', 'The signature or decryption was invalid');
}
}
$security->parentNode->removeChild($security);
}
}
