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File: AuthnRequest.php
<?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 */ /** * SAML 2 Authentication Request */ class OneLogin_Saml2_AuthnRequest { /** * Object that represents the setting info * * @var OneLogin_Saml2_Settings */ protected $_settings; /** * SAML AuthNRequest string * * @var string */ private $_authnRequest; /** * SAML AuthNRequest ID. * * @var string */ private $_id; /** * Constructs the AuthnRequest object. * * @param OneLogin_Saml2_Settings $settings SAML Toolkit Settings * @param bool $forceAuthn When true the AuthNReuqest will set the ForceAuthn='true' * @param bool $isPassive When true the AuthNReuqest will set the Ispassive='true' * @param bool $setNameIdPolicy When true the AuthNReuqest will set a nameIdPolicy */ public function __construct(OneLogin_Saml2_Settings $settings, $forceAuthn = false, $isPassive = false, $setNameIdPolicy = true) { $this->_settings = $settings; $spData = $this->_settings->getSPData(); $idpData = $this->_settings->getIdPData(); $security = $this->_settings->getSecurityData(); $id = OneLogin_Saml2_Utils::generateUniqueID(); $issueInstant = OneLogin_Saml2_Utils::parseTime2SAML(time()); $nameIdPolicyStr = ''; if ($setNameIdPolicy) { $nameIDPolicyFormat = $spData['NameIDFormat']; if (isset($security['wantNameIdEncrypted']) && $security['wantNameIdEncrypted']) { $nameIDPolicyFormat = OneLogin_Saml2_Constants::NAMEID_ENCRYPTED; } $nameIdPolicyStr = <<<NAMEIDPOLICY <samlp:NameIDPolicy Format="{$nameIDPolicyFormat}" AllowCreate="true" /> NAMEIDPOLICY; } $providerNameStr = ''; $organizationData = $settings->getOrganization(); if (!empty($organizationData)) { $langs = array_keys($organizationData); if (in_array('en-US', $langs)) { $lang = 'en-US'; } else { $lang = $langs[0]; } if (isset($organizationData[$lang]['displayname']) && !empty($organizationData[$lang]['displayname'])) { $providerNameStr = <<<PROVIDERNAME ProviderName="{$organizationData[$lang]['displayname']}" PROVIDERNAME; } } $forceAuthnStr = ''; if ($forceAuthn) { $forceAuthnStr = <<<FORCEAUTHN ForceAuthn="true" FORCEAUTHN; } $isPassiveStr = ''; if ($isPassive) { $isPassiveStr = <<<ISPASSIVE IsPassive="true" ISPASSIVE; } $requestedAuthnStr = ''; if (isset($security['requestedAuthnContext']) && $security['requestedAuthnContext'] !== false) { $authnComparison = 'exact'; if (isset($security['requestedAuthnContextComparison'])) { $authnComparison = $security['requestedAuthnContextComparison']; } if ($security['requestedAuthnContext'] === true) { $requestedAuthnStr = <<<REQUESTEDAUTHN <samlp:RequestedAuthnContext Comparison="$authnComparison"> <saml:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml:AuthnContextClassRef> </samlp:RequestedAuthnContext> REQUESTEDAUTHN; } else { $requestedAuthnStr .= " <samlp:RequestedAuthnContext Comparison=\"$authnComparison\">\n"; foreach ($security['requestedAuthnContext'] as $contextValue) { $requestedAuthnStr .= " <saml:AuthnContextClassRef>".$contextValue."</saml:AuthnContextClassRef>\n"; } $requestedAuthnStr .= ' </samlp:RequestedAuthnContext>'; } } $spEntityId = htmlspecialchars($spData['entityId'], ENT_QUOTES); $acsUrl = htmlspecialchars($spData['assertionConsumerService']['url'], ENT_QUOTES); $request = <<<AUTHNREQUEST <samlp:AuthnRequest xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion" ID="$id" Version="2.0" {$providerNameStr}{$forceAuthnStr}{$isPassiveStr} IssueInstant="$issueInstant" Destination="{$idpData['singleSignOnService']['url']}" ProtocolBinding="{$spData['assertionConsumerService']['binding']}" AssertionConsumerServiceURL="{$acsUrl}"> <saml:Issuer>{$spEntityId}</saml:Issuer> {$nameIdPolicyStr} {$requestedAuthnStr} </samlp:AuthnRequest> AUTHNREQUEST; $this->_id = $id; $this->_authnRequest = $request; } /** * Returns deflated, base64 encoded, unsigned AuthnRequest. * * @param bool|null $deflate Whether or not we should 'gzdeflate' the request body before we return it. */ public function getRequest($deflate = null) { $subject = $this->_authnRequest; if (is_null($deflate)) { $deflate = $this->_settings->shouldCompressRequests(); } if ($deflate) { $subject = gzdeflate($this->_authnRequest); } $base64Request = base64_encode($subject); return $base64Request; } /** * Returns the AuthNRequest ID. * * @return string */ public function getId() { return $this->_id; } /** * Returns the XML that will be sent as part of the request * * @return string */ public function getXML() { return $this->_authnRequest; } }