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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;
/**
* SAML 2 Authentication Request
*/
class AuthnRequest
{
/**
* Object that represents the setting info
*
* @var Settings
*/
protected $_settings;
/**
* SAML AuthNRequest string
*
* @var string
*/
private $_authnRequest;
/**
* SAML AuthNRequest ID.
*
* @var string
*/
private $_id;
/**
* Constructs the AuthnRequest object.
*
* @param 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 = Utils::generateUniqueID();
$issueInstant = Utils::parseTime2SAML(time());
$nameIdPolicyStr = '';
if ($setNameIdPolicy) {
$nameIDPolicyFormat = $spData['NameIDFormat'];
if (isset($security['wantNameIdEncrypted']) && $security['wantNameIdEncrypted']) {
$nameIDPolicyFormat = 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 $deflate Whether or not we should 'gzdeflate' the request body before we return it.
*
* @return string
*/
public function getRequest($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;
}
}
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