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<?php
/**
File in Authentication plugin package for ver 2.1.4 Booked Scheduler
to implement Single Sign On Capability. Based on code from the
Booked Scheduler Authentication Ldap plugin as well as a SAML
Authentication plugin for Moodle 1.9+.
See http://moodle.org/mod/data/view.php?d=13&rid=2574
This plugin uses the SimpleSAMLPHP version 1.8.2 libraries.
http://simplesamlphp.org/
*
*/
/**
* PHP SAML CLASS FOR COMMUNICATING WITH Simple Saml PHP Service Provider
*
*/
/**
* Main adSAML class
*
*/
class adSAML {
/**
* Name of the Simple Saml service provider instance
*
* @var string
*/
private $ssphpSP = 'default-sp';
/**
* Full directory path name that holds simpleSAMLphp library on your server
*
* @var string
*/
private $samlLib;
/**
* Full directory path name that holds simpleSAMLphp config.php file
* on your server
*
* @var string
*/
private $samlConfig;
/**
* Instance of the helper class for Simple Saml Applications
*
* @var SimpleSAML_Auth_Simple object
*/
private $authSimple ;
/**
* Holds a list of user attributes obtained from SimpleSAMLphp
* Identity Provider (IDP)
*
* @var associative array where attribute names are keys
*/
private $userAttributes;
/**
* Default Constructor
*
* Instantiate an instance of the SimpleSAML_Auth_Simple class
* and call requireAuth() to validate a user
*
* @param array $options Array of options to pass to the constructor
*
*/
function __construct($options = array())
{
// Auto load libraries and
// obtain simple SAML SP configuration data
$this->samlLib = $options["ssphp_lib"];
$this->samlConfig = $options["ssphp_config"];
require_once($this->samlLib . '/lib/_autoload.php');
SimpleSAML_Configuration::init($this->samlConfig);
// You can specifically overide any of the default configuration options setup above
if (count($options)>0){
if (array_key_exists("ssphp_sp",$options))
{
$this->ssphpSP = $options["ssphp_sp"];
}
else
{
Log::Error("Could not connect to SAML service provider."
. " Please check your SAML configuration settings");
}
}
$this->authSimple = new SimpleSAML_Auth_Simple($this->ssphpSP);
// requireAuth() redirects user to SSO login page
// where user needs to enter SSO username and password.
// If user is not validated, then this function does not return
$this->authSimple->requireAuth();
}
/**
* Return true if user has logged into SimpleSAML logon page
* (user record exists in SimpleSAMLphp IDP data store)
*
* @return bool
*/
public function authenticate() {
$returnValue = false;
if($this->authSimple->isAuthenticated())
{
//obtain an array of attributes associated with this user
$this->userAttributes = $this->authSimple->getAttributes();
$returnValue = true;
}
return $returnValue;
}
/**
* After we know user is authetnicated,
* then we can call getAttributes() method
* on $this->authSimple instance
* @return associative array of attributes
*/
public function getAttributes(){
return $this->userAttributes;
}
}
?>