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CoursewareActionWidget.vue

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    StudipAuthSimpleSamlPHP.php 2.96 KiB
    <?php
    
    /**
     * Class: StudipAuthSimpleSamlPHP
     * author: Rene Ceska <ceskar2001@gmail.com>
     * This class is used to authenticate users through SimpleSAMLphp.
     * This code was inspired by other Stud.IP auth plugins.
     *
     * @since Stud.IP 6.0
     */
    class StudipAuthSimpleSamlPHP extends StudipAuthSSO
    {
        // Name of the SimpleSAMLphp SP
        public string $sp_name;
    
        // Name of attribute that contains username (if empty it will use NameID as username)
        public ?string $username_attribute = null;
    
        public ?string $path_to_simple_saml_php = null;
    
        public ?array $userdata = null;
        public SimpleSAML\Auth\Simple $as;
    
        /**
         * Constructor: read auth information from remote SP.
         */
        public function __construct($config = [])
        {
            parent::__construct($config);
    
            if(!isset($this->path_to_simple_saml_php)){
                require_once('/var/simplesamlphp/src/_autoload.php');
            }else{
                require_once($this->path_to_simple_saml_php );
            }
    
            if (!isset($this->plugin_fullname)) {
                $this->plugin_fullname = _('SAML');
            }
            if (!isset($this->login_description)) {
                $this->login_description = _('für Single Sign On mit SAML');
            }
    
            // check if user chosen to login through this plugin
            if (Request::get('sso') === $this->plugin_name) {
                $this->as = new SimpleSAML\Auth\Simple($this->sp_name);
            }
        }
    
        /**
         * Return the current username.
         */
        public function getUser()
        {
            return $this->getUserData('username');
        }
    
        /**
         * Validate the username passed to the auth plugin.
         * Note: This triggers authentication if needed.
         */
        public function verifyUsername($username)
        {
            if (isset($this->userdata)) {
                // use cached user information
                return $this->getUser();
            }
    
            // check if user is already authenticated and if not, authenticate them
            if (!$this->as->isAuthenticated()) {
                $this->as->requireAuth();
            }
    
            $this->userdata = [];
    
            // get username
            if (empty($this->username_attribute)) {
                $this->userdata['username'] =  $this->as->getAuthData('saml:sp:NameID')->getValue();
            } else {
                $this->userdata['username'] =  $this->as->getAttributes()[$this->username_attribute];
            }
    
            // get other user attributes
            $this->userdata = array_merge($this->userdata, $this->as->getAttributes());
    
            // cleanup session so it does not interfere with Stud.IP session
            SimpleSAML\Session::getSessionFromRequest()->cleanup();
    
            return $this->getUser();
        }
    
        /**
         * Callback that can be used in user_data_mapping array.
         */
        public function getUserData($key)
        {
            return $this->userdata[$key];
        }
    
        /**
         * Logout the user.
         */
        public function logout(): void
        {
            $auth = new \SimpleSAML\Auth\Simple($this->sp_name);
            $auth->Logout();
        }
    
    }