further steps with WS-Security (signing)
This commit is contained in:
Andreas Schamberger
parent
580e6f4da7
commit
5229091033
@ -15,6 +15,7 @@ namespace BeSimple\SoapServer;
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use ass\XmlSecurity\DSig as XmlSecurityDSig;
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use ass\XmlSecurity\Enc as XmlSecurityEnc;
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use ass\XmlSecurity\Key as XmlSecurityKey;
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use ass\XmlSecurity\Pem as XmlSecurityPem;
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use BeSimple\SoapCommon\FilterHelper;
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use BeSimple\SoapCommon\Helper;
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@ -42,6 +43,21 @@ class WsSecurityFilter implements SoapRequestFilter, SoapResponseFilter
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*/
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const DATETIME_FORMAT = 'Y-m-d\TH:i:s.000\Z';
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/**
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* (X509 3.2.1) Reference to a Subject Key Identifier
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*/
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const TOKEN_REFERENCE_SUBJECT_KEY_IDENTIFIER = 0;
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/**
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* (X509 3.2.1) Reference to a Security Token
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*/
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const TOKEN_REFERENCE_SECURITY_TOKEN = 1;
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/**
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* (SMS_1.1 7.3) Key Identifiers
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*/
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const TOKEN_REFERENCE_THUMBPRINT_SHA1 = 2;
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/**
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* Actor.
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*
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@ -63,6 +79,34 @@ class WsSecurityFilter implements SoapRequestFilter, SoapResponseFilter
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*/
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protected $expires;
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/**
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* Sign all headers.
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*
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* @var boolean
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*/
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protected $signAllHeaders;
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/**
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* (X509 3.2) Token reference type for encryption.
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*
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* @var int
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*/
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protected $tokenReferenceEncryption = null;
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/**
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* (X509 3.2) Token reference type for signature.
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*
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* @var int
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*/
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protected $tokenReferenceSignature = null;
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/**
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* Service WsSecurityKey.
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*
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* @var \BeSimple\SoapCommon\WsSecurityKey
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*/
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protected $serviceSecurityKey;
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/**
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* Username/password callback that returns password or null.
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*
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@ -104,9 +148,40 @@ class WsSecurityFilter implements SoapRequestFilter, SoapResponseFilter
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$this->actor = null;
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$this->addTimestamp = null;
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$this->expires = null;
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$this->serviceSecurityKey = null;
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$this->signAllHeaders = null;
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$this->tokenReferenceEncryption = null;
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$this->tokenReferenceSignature = null;
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$this->usernamePasswordCallback = null;
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}
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/**
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* Get service security key.
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*
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* @param \BeSimple\SoapCommon\WsSecurityKey $serviceSecurityKey Service security key
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*
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* @return void
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*/
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public function setServiceSecurityKeyObject(WsSecurityKey $serviceSecurityKey)
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{
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$this->serviceSecurityKey = $serviceSecurityKey;
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}
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/**
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* Set security options.
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*
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* @param int $tokenReference self::TOKEN_REFERENCE_SUBJECT_KEY_IDENTIFIER | self::TOKEN_REFERENCE_SECURITY_TOKEN | self::TOKEN_REFERENCE_THUMBPRINT_SHA1
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* @param boolean $signAllHeaders Sign all headers?
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*
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* @return void
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*/
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public function setSecurityOptionsSignature($tokenReference, $signAllHeaders = false)
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{
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$this->tokenReferenceSignature = $tokenReference;
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$this->signAllHeaders = $signAllHeaders;
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}
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/**
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* Modify the given request XML.
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*
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@ -156,6 +231,27 @@ class WsSecurityFilter implements SoapRequestFilter, SoapResponseFilter
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}
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}
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// add SecurityTokenReference resolver for KeyInfo
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$keyResolver = array($this, 'keyInfoSecurityTokenReferenceResolver');
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XmlSecurityDSig::addKeyInfoResolver(Helper::NS_WSS, 'SecurityTokenReference', $keyResolver);
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// locate signature node
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$signature = XmlSecurityDSig::locateSignature($security);
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if (null !== $signature) {
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// verify references
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$options = array(
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'id_ns_prefix' => Helper::PFX_WSU,
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'id_prefix_ns' => Helper::NS_WSU,
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);
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if (XmlSecurityDSig::verifyReferences($signature, $options) !== true) {
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throw new \SoapFault('wsse:FailedCheck', 'The signature or decryption was invalid');
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}
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// verify signature
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if (XmlSecurityDSig::verifyDocumentSignature($signature) !== true) {
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throw new \SoapFault('wsse:FailedCheck', 'The signature or decryption was invalid');
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}
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}
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$security->parentNode->removeChild($security);
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}
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}
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@ -172,6 +268,196 @@ class WsSecurityFilter implements SoapRequestFilter, SoapResponseFilter
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// get \DOMDocument from SOAP response
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$dom = $response->getContentDocument();
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// create FilterHelper
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$filterHelper = new FilterHelper($dom);
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// add the neccessary namespaces
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$filterHelper->addNamespace(Helper::PFX_WSS, Helper::NS_WSS);
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$filterHelper->addNamespace(Helper::PFX_WSU, Helper::NS_WSU);
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$filterHelper->registerNamespace(XmlSecurityDSig::PFX_XMLDSIG, XmlSecurityDSig::NS_XMLDSIG);
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// init timestamp
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$dt = new \DateTime('now', new \DateTimeZone('UTC'));
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$createdTimestamp = $dt->format(self::DATETIME_FORMAT);
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// create security header
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$security = $filterHelper->createElement(Helper::NS_WSS, 'Security');
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$filterHelper->addHeaderElement($security, true, $this->actor, $response->getVersion());
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if (true === $this->addTimestamp || null !== $this->expires) {
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$timestamp = $filterHelper->createElement(Helper::NS_WSU, 'Timestamp');
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$created = $filterHelper->createElement(Helper::NS_WSU, 'Created', $createdTimestamp);
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$timestamp->appendChild($created);
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if (null !== $this->expires) {
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$dt->modify('+' . $this->expires . ' seconds');
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$expiresTimestamp = $dt->format(self::DATETIME_FORMAT);
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$expires = $filterHelper->createElement(Helper::NS_WSU, 'Expires', $expiresTimestamp);
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$timestamp->appendChild($expires);
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}
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$security->appendChild($timestamp);
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}
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if (null !== $this->serviceSecurityKey && $this->serviceSecurityKey->hasKeys()) {
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$guid = 'CertId-' . Helper::generateUUID();
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// add token references
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$keyInfo = null;
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if (null !== $this->tokenReferenceSignature) {
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$keyInfo = $this->createKeyInfo($filterHelper, $this->tokenReferenceSignature, $guid, $this->serviceSecurityKey->getPublicKey());
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}
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$nodes = $this->createNodeListForSigning($dom, $security);
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$signature = XmlSecurityDSig::createSignature($this->serviceSecurityKey->getPrivateKey(), XmlSecurityDSig::EXC_C14N, $security, null, $keyInfo);
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$options = array(
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'id_ns_prefix' => Helper::PFX_WSU,
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'id_prefix_ns' => Helper::NS_WSU,
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);
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foreach ($nodes as $node) {
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XmlSecurityDSig::addNodeToSignature($signature, $node, XmlSecurityDSig::SHA1, XmlSecurityDSig::EXC_C14N, $options);
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}
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XmlSecurityDSig::signDocument($signature, $this->serviceSecurityKey->getPrivateKey(), XmlSecurityDSig::EXC_C14N);
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$publicCertificate = $this->serviceSecurityKey->getPublicKey()->getX509Certificate(true);
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$binarySecurityToken = $filterHelper->createElement(Helper::NS_WSS, 'BinarySecurityToken', $publicCertificate);
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$filterHelper->setAttribute($binarySecurityToken, null, 'EncodingType', Helper::NAME_WSS_SMS . '#Base64Binary');
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$filterHelper->setAttribute($binarySecurityToken, null, 'ValueType', Helper::NAME_WSS_X509 . '#X509v3');
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$filterHelper->setAttribute($binarySecurityToken, Helper::NS_WSU, 'Id', $guid);
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$security->insertBefore($binarySecurityToken, $signature);
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}
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}
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/**
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* Adds the configured KeyInfo to the parentNode.
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*
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* @param FilterHelper $filterHelper Filter helper object
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* @param int $tokenReference Token reference type
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* @param string $guid Unique ID
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* @param \ass\XmlSecurity\Key $xmlSecurityKey XML security key
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*
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* @return \DOMElement
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*/
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protected function createKeyInfo(FilterHelper $filterHelper, $tokenReference, $guid, XmlSecurityKey $xmlSecurityKey = null)
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{
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$keyInfo = $filterHelper->createElement(XmlSecurityDSig::NS_XMLDSIG, 'KeyInfo');
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$securityTokenReference = $filterHelper->createElement(Helper::NS_WSS, 'SecurityTokenReference');
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$keyInfo->appendChild($securityTokenReference);
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// security token
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if (self::TOKEN_REFERENCE_SECURITY_TOKEN === $tokenReference) {
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$reference = $filterHelper->createElement(Helper::NS_WSS, 'Reference');
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$filterHelper->setAttribute($reference, null, 'URI', '#' . $guid);
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if (null !== $xmlSecurityKey) {
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$filterHelper->setAttribute($reference, null, 'ValueType', Helper::NAME_WSS_X509 . '#X509v3');
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}
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$securityTokenReference->appendChild($reference);
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// subject key identifier
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} elseif (self::TOKEN_REFERENCE_SUBJECT_KEY_IDENTIFIER === $tokenReference && null !== $xmlSecurityKey) {
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$keyIdentifier = $filterHelper->createElement(Helper::NS_WSS, 'KeyIdentifier');
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$filterHelper->setAttribute($keyIdentifier, null, 'EncodingType', Helper::NAME_WSS_SMS . '#Base64Binary');
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$filterHelper->setAttribute($keyIdentifier, null, 'ValueType', Helper::NAME_WSS_X509 . '#509SubjectKeyIdentifier');
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$securityTokenReference->appendChild($keyIdentifier);
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$certificate = $xmlSecurityKey->getX509SubjectKeyIdentifier();
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$dataNode = new \DOMText($certificate);
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$keyIdentifier->appendChild($dataNode);
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// thumbprint sha1
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} elseif (self::TOKEN_REFERENCE_THUMBPRINT_SHA1 === $tokenReference && null !== $xmlSecurityKey) {
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$keyIdentifier = $filterHelper->createElement(Helper::NS_WSS, 'KeyIdentifier');
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$filterHelper->setAttribute($keyIdentifier, null, 'EncodingType', Helper::NAME_WSS_SMS . '#Base64Binary');
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$filterHelper->setAttribute($keyIdentifier, null, 'ValueType', Helper::NAME_WSS_SMS_1_1 . '#ThumbprintSHA1');
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$securityTokenReference->appendChild($keyIdentifier);
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$thumbprintSha1 = base64_encode(sha1(base64_decode($xmlSecurityKey->getX509Certificate(true)), true));
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$dataNode = new \DOMText($thumbprintSha1);
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$keyIdentifier->appendChild($dataNode);
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}
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return $keyInfo;
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}
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/**
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* Create a list of \DOMNodes that should be signed.
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*
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* @param \DOMDocument $dom DOMDocument to query
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* @param \DOMElement $security Security element
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*
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* @return array(\DOMNode)
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*/
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protected function createNodeListForSigning(\DOMDocument $dom, \DOMElement $security)
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{
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$nodes = array();
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$body = $dom->getElementsByTagNameNS($dom->documentElement->namespaceURI, 'Body')->item(0);
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if (null !== $body) {
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$nodes[] = $body;
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}
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foreach ($security->childNodes as $node) {
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if (XML_ELEMENT_NODE === $node->nodeType) {
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$nodes[] = $node;
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}
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}
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if ($this->signAllHeaders) {
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foreach ($security->parentNode->childNodes as $node) {
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if (XML_ELEMENT_NODE === $node->nodeType &&
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Helper::NS_WSS !== $node->namespaceURI) {
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$nodes[] = $node;
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}
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}
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}
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return $nodes;
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}
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/**
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* Gets the referenced node for the given URI.
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*
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* @param \DOMElement $node Node
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* @param string $uri URI
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*
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* @return \DOMElement
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*/
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protected function getReferenceNodeForUri(\DOMElement $node, $uri)
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{
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$url = parse_url($uri);
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$referenceId = $url['fragment'];
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$query = '//*[@'.Helper::PFX_WSU.':Id="'.$referenceId.'" or @Id="'.$referenceId.'"]';
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$xpath = new \DOMXPath($node->ownerDocument);
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$xpath->registerNamespace(Helper::PFX_WSU, Helper::NS_WSU);
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return $xpath->query($query)->item(0);
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}
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/**
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* Tries to resolve a key from the given \DOMElement.
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*
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* @param \DOMElement $node Node where to resolve the key
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* @param string $algorithm XML security key algorithm
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*
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* @return \ass\XmlSecurity\Key|null
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*/
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public function keyInfoSecurityTokenReferenceResolver(\DOMElement $node, $algorithm)
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{
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foreach ($node->childNodes as $key) {
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if (Helper::NS_WSS === $key->namespaceURI) {
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switch ($key->localName) {
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case 'KeyIdentifier':
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return $this->serviceSecurityKey->getPublicKey();
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case 'Reference':
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$uri = $key->getAttribute('URI');
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$referencedNode = $this->getReferenceNodeForUri($node, $uri);
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if (XmlSecurityEnc::NS_XMLENC === $referencedNode->namespaceURI
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&& 'EncryptedKey' == $referencedNode->localName) {
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$key = XmlSecurityEnc::decryptEncryptedKey($referencedNode, $this->serviceSecurityKey->getPrivateKey());
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return XmlSecurityKey::factory($algorithm, $key, false, XmlSecurityKey::TYPE_PRIVATE);
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} elseif (Helper::NS_WSS === $referencedNode->namespaceURI
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&& 'BinarySecurityToken' == $referencedNode->localName) {
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$key = XmlSecurityPem::formatKeyInPemFormat($referencedNode->textContent);
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return XmlSecurityKey::factory(XmlSecurityKey::RSA_SHA1, $key, false, XmlSecurityKey::TYPE_PUBLIC);
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}
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}
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}
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}
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return null;
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}
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}
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