/**
* Constructor for SAML 2 authentication request messages.
*
* @param DOMElement|NULL $xml The input message.
* @throws Exception
*/
public function __construct(DOMElement $xml = NULL)
{
parent::__construct('AuthnRequest', $xml);
$this->nameIdPolicy = array();
$this->forceAuthn = FALSE;
$this->isPassive = FALSE;
if ($xml === NULL) {
return;
}
$this->forceAuthn = SAML2_Utils::parseBoolean($xml, 'ForceAuthn', FALSE);
$this->isPassive = SAML2_Utils::parseBoolean($xml, 'IsPassive', FALSE);
if ($xml->hasAttribute('AssertionConsumerServiceURL')) {
$this->assertionConsumerServiceURL = $xml->getAttribute('AssertionConsumerServiceURL');
}
if ($xml->hasAttribute('ProtocolBinding')) {
$this->protocolBinding = $xml->getAttribute('ProtocolBinding');
}
if ($xml->hasAttribute('AttributeConsumingServiceIndex')) {
$this->attributeConsumingServiceIndex = (int) $xml->getAttribute('AttributeConsumingServiceIndex');
}
if ($xml->hasAttribute('AssertionConsumerServiceIndex')) {
$this->assertionConsumerServiceIndex = (int) $xml->getAttribute('AssertionConsumerServiceIndex');
}
$nameIdPolicy = SAML2_Utils::xpQuery($xml, './saml_protocol:NameIDPolicy');
if (!empty($nameIdPolicy)) {
$nameIdPolicy = $nameIdPolicy[0];
if ($nameIdPolicy->hasAttribute('Format')) {
$this->nameIdPolicy['Format'] = $nameIdPolicy->getAttribute('Format');
}
if ($nameIdPolicy->hasAttribute('SPNameQualifier')) {
$this->nameIdPolicy['SPNameQualifier'] = $nameIdPolicy->getAttribute('SPNameQualifier');
}
if ($nameIdPolicy->hasAttribute('AllowCreate')) {
$this->nameIdPolicy['AllowCreate'] = SAML2_Utils::parseBoolean($nameIdPolicy, 'AllowCreate', FALSE);
}
}
$requestedAuthnContext = SAML2_Utils::xpQuery($xml, './saml_protocol:RequestedAuthnContext');
if (!empty($requestedAuthnContext)) {
$requestedAuthnContext = $requestedAuthnContext[0];
$rac = array('AuthnContextClassRef' => array(), 'Comparison' => 'exact');
$accr = SAML2_Utils::xpQuery($requestedAuthnContext, './saml_assertion:AuthnContextClassRef');
foreach ($accr as $i) {
$rac['AuthnContextClassRef'][] = trim($i->textContent);
}
if ($requestedAuthnContext->hasAttribute('Comparison')) {
$rac['Comparison'] = $requestedAuthnContext->getAttribute('Comparison');
}
$this->requestedAuthnContext = $rac;
}
$scoping = SAML2_Utils::xpQuery($xml, './saml_protocol:Scoping');
if (!empty($scoping)) {
$scoping = $scoping[0];
if ($scoping->hasAttribute('ProxyCount')) {
$this->ProxyCount = (int) $scoping->getAttribute('ProxyCount');
}
$idpEntries = SAML2_Utils::xpQuery($scoping, './saml_protocol:IDPList/saml_protocol:IDPEntry');
foreach ($idpEntries as $idpEntry) {
if (!$idpEntry->hasAttribute('ProviderID')) {
throw new Exception("Could not get ProviderID from Scoping/IDPEntry element in AuthnRequest object");
}
$this->IDPList[] = $idpEntry->getAttribute('ProviderID');
}
$requesterIDs = SAML2_Utils::xpQuery($scoping, './saml_protocol:RequesterID');
foreach ($requesterIDs as $requesterID) {
$this->RequesterID[] = trim($requesterID->textContent);
}
}
$this->extensions = SAML2_XML_samlp_Extensions::getList($xml);
}
/**
* Initialize a message.
*
* This constructor takes an optional parameter with a DOMElement. If this
* parameter is given, the message will be initialized with data from that
* XML element.
*
* If no XML element is given, the message is initialized with suitable
* default values.
*
* @param string $tagName The tag name of the root element.
* @param DOMElement|NULL $xml The input message.
* @throws Exception
*/
protected function __construct($tagName, DOMElement $xml = NULL)
{
assert('is_string($tagName)');
$this->tagName = $tagName;
$this->id = SAML2_Utils::getContainer()->generateId();
$this->issueInstant = time();
$this->certificates = array();
$this->validators = array();
if ($xml === NULL) {
return;
}
if (!$xml->hasAttribute('ID')) {
throw new Exception('Missing ID attribute on SAML message.');
}
$this->id = $xml->getAttribute('ID');
if ($xml->getAttribute('Version') !== '2.0') {
/* Currently a very strict check. */
throw new Exception('Unsupported version: ' . $xml->getAttribute('Version'));
}
$this->issueInstant = SAML2_Utils::xsDateTimeToTimestamp($xml->getAttribute('IssueInstant'));
if ($xml->hasAttribute('Destination')) {
$this->destination = $xml->getAttribute('Destination');
}
if ($xml->hasAttribute('Consent')) {
$this->consent = $xml->getAttribute('Consent');
}
$issuer = SAML2_Utils::xpQuery($xml, './saml_assertion:Issuer');
if (!empty($issuer)) {
$this->issuer = trim($issuer[0]->textContent);
}
/* Validate the signature element of the message. */
try {
$sig = SAML2_Utils::validateElement($xml);
if ($sig !== FALSE) {
$this->certificates = $sig['Certificates'];
$this->validators[] = array('Function' => array('SAML2_Utils', 'validateSignature'), 'Data' => $sig);
}
} catch (Exception $e) {
/* Ignore signature validation errors. */
}
$this->extensions = SAML2_XML_samlp_Extensions::getList($xml);
}