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<?php
/**
* This file is part of php-saml.
*
* (c) OneLogin Inc
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @package OneLogin
* @author OneLogin Inc <saml-info@onelogin.com>
* @license MIT https://github.com/onelogin/php-saml/blob/master/LICENSE
* @link https://github.com/onelogin/php-saml
*/
namespace OneLogin\Saml2;
use RobRichards\XMLSecLibs\XMLSecurityKey;
use Exception;
/**
* Main class of OneLogin's PHP Toolkit
*/
class Auth
{
/**
* Settings data.
*
* @var Settings
*/
private $_settings;
/**
* User attributes data.
*
* @var array
*/
private $_attributes = array();
/**
* User attributes data with FriendlyName index.
*
* @var array
*/
private $_attributesWithFriendlyName = array();
/**
* NameID
*
* @var string
*/
private $_nameid;
/**
* NameID Format
*
* @var string
*/
private $_nameidFormat;
/**
* NameID NameQualifier
*
* @var string
*/
private $_nameidNameQualifier;
/**
* NameID SP NameQualifier
*
* @var string
*/
private $_nameidSPNameQualifier;
/**
* If user is authenticated.
*
* @var bool
*/
private $_authenticated = false;
/**
* SessionIndex. When the user is logged, this stored it
* from the AuthnStatement of the SAML Response
*
* @var string
*/
private $_sessionIndex;
/**
* SessionNotOnOrAfter. When the user is logged, this stored it
* from the AuthnStatement of the SAML Response
*
* @var int|null
*/
private $_sessionExpiration;
/**
* The ID of the last message processed
*
* @var string
*/
private $_lastMessageId;
/**
* The ID of the last assertion processed
*
* @var string
*/
private $_lastAssertionId;
/**
* The NotOnOrAfter value of the valid SubjectConfirmationData
* node (if any) of the last assertion processed
*
* @var int
*/
private $_lastAssertionNotOnOrAfter;
/**
* If any error.
*
* @var array
*/
private $_errors = array();
/**
* Last error object.
*
* @var Error|null
*/
private $_lastErrorException;
/**
* Last error.
*
* @var string|null
*/
private $_lastError;
/**
* Last AuthNRequest ID or LogoutRequest ID generated by this Service Provider
*
* @var string
*/
private $_lastRequestID;
/**
* The most recently-constructed/processed XML SAML request
* (AuthNRequest, LogoutRequest)
*
* @var string
*/
private $_lastRequest;
/**
* The most recently-constructed/processed XML SAML response
* (SAMLResponse, LogoutResponse). If the SAMLResponse was
* encrypted, by default tries to return the decrypted XML
*
* @var string|\DomDocument|null
*/
private $_lastResponse;
/**
* Initializes the SP SAML instance.
*
* @param array|null $settings Setting data
*
* @throws Exception
* @throws Error
*/
public function __construct(array $settings = null)
{
$this->_settings = new Settings($settings);
}
/**
* Returns the settings info
*
* @return Settings The settings data.
*/
public function getSettings()
{
return $this->_settings;
}
/**
* Set the strict mode active/disable
*
* @param bool $value Strict parameter
*
* @throws Error
*/
public function setStrict($value)
{
if (!is_bool($value)) {
throw new Error(
'Invalid value passed to setStrict()',
Error::SETTINGS_INVALID_SYNTAX
);
}
$this->_settings->setStrict($value);
}
/**
* Set schemas path
*
* @param string $path
* @return $this
*/
public function setSchemasPath($path)
{
$this->_paths['schemas'] = $path;
}
/**
* Process the SAML Response sent by the IdP.
*
* @param string|null $requestId The ID of the AuthNRequest sent by this SP to the IdP
*
* @throws Error
* @throws ValidationError
*/
public function processResponse($requestId = null)
{
$this->_errors = array();
$this->_lastError = $this->_lastErrorException = null;
if (isset($_POST['SAMLResponse'])) {
// AuthnResponse -- HTTP_POST Binding
$response = new Response($this->_settings, $_POST['SAMLResponse']);
$this->_lastResponse = $response->getXMLDocument();
if ($response->isValid($requestId)) {
$this->_attributes = $response->getAttributes();
$this->_attributesWithFriendlyName = $response->getAttributesWithFriendlyName();
$this->_nameid = $response->getNameId();
$this->_nameidFormat = $response->getNameIdFormat();
$this->_nameidNameQualifier = $response->getNameIdNameQualifier();
$this->_nameidSPNameQualifier = $response->getNameIdSPNameQualifier();
$this->_authenticated = true;
$this->_sessionIndex = $response->getSessionIndex();
$this->_sessionExpiration = $response->getSessionNotOnOrAfter();
$this->_lastMessageId = $response->getId();
$this->_lastAssertionId = $response->getAssertionId();
$this->_lastAssertionNotOnOrAfter = $response->getAssertionNotOnOrAfter();
} else {
$this->_errors[] = 'invalid_response';
$this->_lastErrorException = $response->getErrorException();
$this->_lastError = $response->getError();
}
} else {
$this->_errors[] = 'invalid_binding';
throw new Error(
'SAML Response not found, Only supported HTTP_POST Binding',
Error::SAML_RESPONSE_NOT_FOUND
);
}
}
/**
* Process the SAML Logout Response / Logout Request sent by the IdP.
*
* @param bool $keepLocalSession When false will destroy the local session, otherwise will keep it
* @param string|null $requestId The ID of the LogoutRequest sent by this SP to the IdP
* @param bool $retrieveParametersFromServer True if we want to use parameters from $_SERVER to validate the signature
* @param callable $cbDeleteSession Callback to be executed to delete session
* @param bool $stay True if we want to stay (returns the url string) False to redirect
*
* @return string|null
*
* @throws Error
*/
public function processSLO($keepLocalSession = false, $requestId = null, $retrieveParametersFromServer = false, $cbDeleteSession = null, $stay = false)
{
$this->_errors = array();
$this->_lastError = $this->_lastErrorException = null;
if (isset($_GET['SAMLResponse'])) {
$logoutResponse = new LogoutResponse($this->_settings, $_GET['SAMLResponse']);
$this->_lastResponse = $logoutResponse->getXML();
if (!$logoutResponse->isValid($requestId, $retrieveParametersFromServer)) {
$this->_errors[] = 'invalid_logout_response';
$this->_lastErrorException = $logoutResponse->getErrorException();
$this->_lastError = $logoutResponse->getError();
} else if ($logoutResponse->getStatus() !== Constants::STATUS_SUCCESS) {
$this->_errors[] = 'logout_not_success';
} else {
$this->_lastMessageId = $logoutResponse->id;
if (!$keepLocalSession) {
if ($cbDeleteSession === null) {
Utils::deleteLocalSession();
} else {
call_user_func($cbDeleteSession);
}
}
}
} else if (isset($_GET['SAMLRequest'])) {
$logoutRequest = new LogoutRequest($this->_settings, $_GET['SAMLRequest']);
$this->_lastRequest = $logoutRequest->getXML();
if (!$logoutRequest->isValid($retrieveParametersFromServer)) {
$this->_errors[] = 'invalid_logout_request';
$this->_lastErrorException = $logoutRequest->getErrorException();
$this->_lastError = $logoutRequest->getError();
} else {
if (!$keepLocalSession) {
if ($cbDeleteSession === null) {
Utils::deleteLocalSession();
} else {
call_user_func($cbDeleteSession);
}
}
$inResponseTo = $logoutRequest->id;
$this->_lastMessageId = $logoutRequest->id;
$responseBuilder = new LogoutResponse($this->_settings);
$responseBuilder->build($inResponseTo);
$this->_lastResponse = $responseBuilder->getXML();
$logoutResponse = $responseBuilder->getResponse();
$parameters = array('SAMLResponse' => $logoutResponse);
if (isset($_GET['RelayState'])) {
$parameters['RelayState'] = $_GET['RelayState'];
}
$security = $this->_settings->getSecurityData();
if (isset($security['logoutResponseSigned']) && $security['logoutResponseSigned']) {
$signature = $this->buildResponseSignature($logoutResponse, isset($parameters['RelayState'])? $parameters['RelayState']: null, $security['signatureAlgorithm']);
$parameters['SigAlg'] = $security['signatureAlgorithm'];
$parameters['Signature'] = $signature;
}
return $this->redirectTo($this->getSLOResponseUrl(), $parameters, $stay);
}
} else {
$this->_errors[] = 'invalid_binding';
throw new Error(
'SAML LogoutRequest/LogoutResponse not found. Only supported HTTP_REDIRECT Binding',
Error::SAML_LOGOUTMESSAGE_NOT_FOUND
);
}
}
/**
* Redirects the user to the url past by parameter
* or to the url that we defined in our SSO Request.
*
* @param string $url The target URL to redirect the user.
* @param array $parameters Extra parameters to be passed as part of the url
* @param bool $stay True if we want to stay (returns the url string) False to redirect
*
* @return string|null
*/
public function redirectTo($url = '', array $parameters = array(), $stay = false)
{
assert(is_string($url));
if (empty($url) && isset($_REQUEST['RelayState'])) {
$url = $_REQUEST['RelayState'];
}
return Utils::redirect($url, $parameters, $stay);
}
/**
* Checks if the user is authenticated or not.
*
* @return bool True if the user is authenticated
*/
public function isAuthenticated()
{
return $this->_authenticated;
}
/**
* Returns the set of SAML attributes.
*
* @return array Attributes of the user.
*/
public function getAttributes()
{
return $this->_attributes;
}
/**
* Returns the set of SAML attributes indexed by FriendlyName
*
* @return array Attributes of the user.
*/
public function getAttributesWithFriendlyName()
{
return $this->_attributesWithFriendlyName;
}
/**
* Returns the nameID
*
* @return string The nameID of the assertion
*/
public function getNameId()
{
return $this->_nameid;
}
/**
* Returns the nameID Format
*
* @return string The nameID Format of the assertion
*/
public function getNameIdFormat()
{
return $this->_nameidFormat;
}
/**
* Returns the nameID NameQualifier
*
* @return string The nameID NameQualifier of the assertion
*/
public function getNameIdNameQualifier()
{
return $this->_nameidNameQualifier;
}
/**
* Returns the nameID SP NameQualifier
*
* @return string The nameID SP NameQualifier of the assertion
*/
public function getNameIdSPNameQualifier()
{
return $this->_nameidSPNameQualifier;
}
/**
* Returns the SessionIndex
*
* @return string|null The SessionIndex of the assertion
*/
public function getSessionIndex()
{
return $this->_sessionIndex;
}
/**
* Returns the SessionNotOnOrAfter
*
* @return int|null The SessionNotOnOrAfter of the assertion
*/
public function getSessionExpiration()
{
return $this->_sessionExpiration;
}
/**
* Returns if there were any error
*
* @return array Errors
*/
public function getErrors()
{
return $this->_errors;
}
/**
* Returns the reason for the last error
*
* @return string|null Error reason
*/
public function getLastErrorReason()
{
return $this->_lastError;
}
/**
* Returns the last error
*
* @return Exception|null Error
*/
public function getLastErrorException()
{
return $this->_lastErrorException;
}
/**
* Returns the requested SAML attribute
*
* @param string $name The requested attribute of the user.
*
* @return array|null Requested SAML attribute ($name).
*/
public function getAttribute($name)
{
assert(is_string($name));
$value = null;
if (isset($this->_attributes[$name])) {
return $this->_attributes[$name];
}
return $value;
}
/**
* Returns the requested SAML attribute indexed by FriendlyName
*
* @param string $friendlyName The requested attribute of the user.
*
* @return array|null Requested SAML attribute ($friendlyName).
*/
public function getAttributeWithFriendlyName($friendlyName)
{
assert(is_string($friendlyName));
$value = null;
if (isset($this->_attributesWithFriendlyName[$friendlyName])) {
return $this->_attributesWithFriendlyName[$friendlyName];
}
return $value;
}
/**
* Initiates the SSO process.
*
* @param string|null $returnTo The target URL the user should be returned to after login.
* @param array $parameters Extra parameters to be added to the GET
* @param bool $forceAuthn When true the AuthNRequest will set the ForceAuthn='true'
* @param bool $isPassive When true the AuthNRequest will set the Ispassive='true'
* @param bool $stay True if we want to stay (returns the url string) False to redirect
* @param bool $setNameIdPolicy When true the AuthNRequest will set a nameIdPolicy element
* @param string $nameIdValueReq Indicates to the IdP the subject that should be authenticated
*
* @return string|null If $stay is True, it return a string with the SLO URL + LogoutRequest + parameters
*
* @throws Error
*/
public function login($returnTo = null, array $parameters = array(), $forceAuthn = false, $isPassive = false, $stay = false, $setNameIdPolicy = true, $nameIdValueReq = null)
{
$authnRequest = $this->buildAuthnRequest($this->_settings, $forceAuthn, $isPassive, $setNameIdPolicy, $nameIdValueReq);
$this->_lastRequest = $authnRequest->getXML();
$this->_lastRequestID = $authnRequest->getId();
$samlRequest = $authnRequest->getRequest();
$parameters['SAMLRequest'] = $samlRequest;
if (!empty($returnTo)) {
$parameters['RelayState'] = $returnTo;
} else {
$parameters['RelayState'] = Utils::getSelfRoutedURLNoQuery();
}
$security = $this->_settings->getSecurityData();
if (isset($security['authnRequestsSigned']) && $security['authnRequestsSigned']) {
$signature = $this->buildRequestSignature($samlRequest, $parameters['RelayState'], $security['signatureAlgorithm']);
$parameters['SigAlg'] = $security['signatureAlgorithm'];
$parameters['Signature'] = $signature;
}
return $this->redirectTo($this->getSSOurl(), $parameters, $stay);
}
/**
* Initiates the SLO process.
*
* @param string|null $returnTo The target URL the user should be returned to after logout.
* @param array $parameters Extra parameters to be added to the GET
* @param string|null $nameId The NameID that will be set in the LogoutRequest.
* @param string|null $sessionIndex The SessionIndex (taken from the SAML Response in the SSO process).
* @param bool $stay True if we want to stay (returns the url string) False to redirect
* @param string|null $nameIdFormat The NameID Format will be set in the LogoutRequest.
* @param string|null $nameIdNameQualifier The NameID NameQualifier will be set in the LogoutRequest.
*
* @return string|null If $stay is True, it return a string with the SLO URL + LogoutRequest + parameters
*
* @throws Error
*/
public function logout($returnTo = null, array $parameters = array(), $nameId = null, $sessionIndex = null, $stay = false, $nameIdFormat = null, $nameIdNameQualifier = null, $nameIdSPNameQualifier = null)
{
$sloUrl = $this->getSLOurl();
if (empty($sloUrl)) {
throw new Error(
'The IdP does not support Single Log Out',
Error::SAML_SINGLE_LOGOUT_NOT_SUPPORTED
);
}
if (empty($nameId) && !empty($this->_nameid)) {
$nameId = $this->_nameid;
}
if (empty($nameIdFormat) && !empty($this->_nameidFormat)) {
$nameIdFormat = $this->_nameidFormat;
}
$logoutRequest = new LogoutRequest($this->_settings, null, $nameId, $sessionIndex, $nameIdFormat, $nameIdNameQualifier, $nameIdSPNameQualifier);
$this->_lastRequest = $logoutRequest->getXML();
$this->_lastRequestID = $logoutRequest->id;
$samlRequest = $logoutRequest->getRequest();
$parameters['SAMLRequest'] = $samlRequest;
if (!empty($returnTo)) {
$parameters['RelayState'] = $returnTo;
} else {
$parameters['RelayState'] = Utils::getSelfRoutedURLNoQuery();
}
$security = $this->_settings->getSecurityData();
if (isset($security['logoutRequestSigned']) && $security['logoutRequestSigned']) {
$signature = $this->buildRequestSignature($samlRequest, $parameters['RelayState'], $security['signatureAlgorithm']);
$parameters['SigAlg'] = $security['signatureAlgorithm'];
$parameters['Signature'] = $signature;
}
return $this->redirectTo($sloUrl, $parameters, $stay);
}
/**
* Gets the IdP SSO url.
*
* @return string The url of the IdP Single Sign On Service
*/
public function getSSOurl()
{
return $this->_settings->getIdPSSOUrl();
}
/**
* Gets the IdP SLO url.
*
* @return string|null The url of the IdP Single Logout Service
*/
public function getSLOurl()
{
return $this->_settings->getIdPSLOUrl();
}
/**
* Gets the IdP SLO response url.
*
* @return string|null The response url of the IdP Single Logout Service
*/
public function getSLOResponseUrl()
{
return $this->_settings->getIdPSLOResponseUrl();
}
/**
* Gets the ID of the last AuthNRequest or LogoutRequest generated by the Service Provider.
*
* @return string The ID of the Request SAML message.
*/
public function getLastRequestID()
{
return $this->_lastRequestID;
}
/**
* Creates an AuthnRequest
*
* @param Settings $settings Setting data
* @param bool $forceAuthn When true the AuthNRequest will set the ForceAuthn='true'
* @param bool $isPassive When true the AuthNRequest will set the Ispassive='true'
* @param bool $setNameIdPolicy When true the AuthNRequest will set a nameIdPolicy element
* @param string $nameIdValueReq Indicates to the IdP the subject that should be authenticated
*
* @return AuthnRequest The AuthnRequest object
*/
public function buildAuthnRequest($settings, $forceAuthn, $isPassive, $setNameIdPolicy, $nameIdValueReq = null)
{
return new AuthnRequest($settings, $forceAuthn, $isPassive, $setNameIdPolicy, $nameIdValueReq);
}
/**
* Generates the Signature for a SAML Request
*
* @param string $samlRequest The SAML Request
* @param string $relayState The RelayState
* @param string $signAlgorithm Signature algorithm method
*
* @return string A base64 encoded signature
*
* @throws Exception
* @throws Error
*/
public function buildRequestSignature($samlRequest, $relayState, $signAlgorithm = XMLSecurityKey::RSA_SHA256)
{
return $this->buildMessageSignature($samlRequest, $relayState, $signAlgorithm, "SAMLRequest");
}
/**
* Generates the Signature for a SAML Response
*
* @param string $samlResponse The SAML Response
* @param string $relayState The RelayState
* @param string $signAlgorithm Signature algorithm method
*
* @return string A base64 encoded signature
*
* @throws Exception
* @throws Error
*/
public function buildResponseSignature($samlResponse, $relayState, $signAlgorithm = XMLSecurityKey::RSA_SHA256)
{
return $this->buildMessageSignature($samlResponse, $relayState, $signAlgorithm, "SAMLResponse");
}
/**
* Generates the Signature for a SAML Message
*
* @param string $samlMessage The SAML Message
* @param string $relayState The RelayState
* @param string $signAlgorithm Signature algorithm method
* @param string $type "SAMLRequest" or "SAMLResponse"
*
* @return string A base64 encoded signature
*
* @throws Exception
* @throws Error
*/
private function buildMessageSignature($samlMessage, $relayState, $signAlgorithm = XMLSecurityKey::RSA_SHA256, $type = "SAMLRequest")
{
$key = $this->_settings->getSPkey();
if (empty($key)) {
if ($type == "SAMLRequest") {
$errorMsg = "Trying to sign the SAML Request but can't load the SP private key";
} else {
$errorMsg = "Trying to sign the SAML Response but can't load the SP private key";
}
throw new Error($errorMsg, Error::PRIVATE_KEY_NOT_FOUND);
}
$objKey = new XMLSecurityKey($signAlgorithm, array('type' => 'private'));
$objKey->loadKey($key, false);
$security = $this->_settings->getSecurityData();
if ($security['lowercaseUrlencoding']) {
$msg = $type.'='.rawurlencode($samlMessage);
if (isset($relayState)) {
$msg .= '&RelayState='.rawurlencode($relayState);
}
$msg .= '&SigAlg=' . rawurlencode($signAlgorithm);
} else {
$msg = $type.'='.urlencode($samlMessage);
if (isset($relayState)) {
$msg .= '&RelayState='.urlencode($relayState);
}
$msg .= '&SigAlg=' . urlencode($signAlgorithm);
}
$signature = $objKey->signData($msg);
return base64_encode($signature);
}
/**
* @return string The ID of the last message processed
*/
public function getLastMessageId()
{
return $this->_lastMessageId;
}
/**
* @return string The ID of the last assertion processed
*/
public function getLastAssertionId()
{
return $this->_lastAssertionId;
}
/**
* @return int The NotOnOrAfter value of the valid
* SubjectConfirmationData node (if any)
* of the last assertion processed
*/
public function getLastAssertionNotOnOrAfter()
{
return $this->_lastAssertionNotOnOrAfter;
}
/**
* Returns the most recently-constructed/processed
* XML SAML request (AuthNRequest, LogoutRequest)
*
* @return string|null The Request XML
*/
public function getLastRequestXML()
{
return $this->_lastRequest;
}
/**
* Returns the most recently-constructed/processed
* XML SAML response (SAMLResponse, LogoutResponse).
* If the SAMLResponse was encrypted, by default tries
* to return the decrypted XML.
*
* @return string|null The Response XML
*/
public function getLastResponseXML()
{
$response = null;
if (isset($this->_lastResponse)) {
if (is_string($this->_lastResponse)) {
$response = $this->_lastResponse;
} else {
$response = $this->_lastResponse->saveXML();
}
}
return $response;
}
}

vendor/onelogin/php-saml/src/Saml2/Auth.php line 177