class.ilAuthContainerECS.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2006 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program is free software; you can redistribute it and/or               |
        | modify it under the terms of the GNU General Public License                 |
        | as published by the Free Software Foundation; either version 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | This program is distributed in the hope that it will be useful,             |
        | but WITHOUT ANY WARRANTY; without even the implied warranty of              |
        | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               |
        | GNU General Public License for more details.                                |
        |                                                                             |
        | You should have received a copy of the GNU General Public License           |
        | along with this program; if not, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/

include_once('Auth/Container.php');

class ilAuthContainerECS extends Auth_Container
{
        protected $mid = null;
        protected $abreviation = null;

        protected $currentServer = null;
        protected $servers = null;

        protected $log;

        public function __construct($a_params = array())
        {
                parent::__construct($a_params);

                $this->initECSServices();
                
                $this->log = $GLOBALS['ilLog'];
        }
        
        public function getAbreviation()
        {
                return $this->abreviation;
        }
        
        public function getMID()
        {
                return $this->mid;              
        }

        public function setCurrentServer(ilECSSetting $server = null)
        {
                $this->currentServer = $server;
        }

        public function getCurrentServer()
        {
                return $this->currentServer;
        }

        public function getServerSettings()
        {
                return $this->servers;
        }

        public function fetchData($a_username,$a_pass)
        {
                global $ilLog;

                $ilLog->write(__METHOD__.': Starting ECS authentication.');

                if(!$this->getServerSettings()->activeServerExists())
                {
                        $GLOBALS['ilLog']->write(__METHOD__.': no active ecs server found. Aborting');
                        return false;
                }

                // Iterate through all active ecs instances
                include_once './Services/WebServices/ECS/classes/class.ilECSServerSettings.php';
                foreach($this->getServerSettings()->getServers() as $server)
                {
                        $this->setCurrentServer($server);
                        if($this->validateHash())
                        {
                                return true;
                        }
                }
                $GLOBALS['ilLog']->write(__METHOD__.': Could not validate ecs hash for any server');
                return false;

        }
        
        
        public function validateHash()
        {
                global $ilLog;

                // Check if hash is valid ...
                try
                {
                        include_once('./Services/WebServices/ECS/classes/class.ilECSConnector.php');
                        $connector = new ilECSConnector($this->getCurrentServer());
                        $res = $connector->getAuth($_GET['ecs_hash']);
                        $auths = $res->getResult();
                        $this->abreviation = $auths->abbr;
                        $ilLog->write(__METHOD__.': Got abr: '.$this->abreviation);
                        return true;
                }
                catch(ilECSConnectorException $e)
                {
                        $ilLog->write(__METHOD__.': Authentication failed with message: '.$e->getMessage());
                        return false;
                }
        }
        
        public function loginObserver($a_username, $a_auth)
        {
                include_once('./Services/WebServices/ECS/classes/class.ilECSUser.php');
                
                $user = new ilECSUser($_GET);
                
                if(!$usr_id = ilObject::_lookupObjIdByImportId($user->getImportId()))
                {
                        $username = $this->createUser($user);
                }
                else
                {
                        $username = $this->updateUser($user,$usr_id);
                }
                
                $a_auth->setAuth($username);
                $this->log->write(__METHOD__.': Login succesesful');
                return true;
        }
        
        public function failedLoginObserver()
        {
                $this->log->write(__METHOD__.': Login failed');
                return false;
        }
        
        

        protected function createUser(ilECSUser $user)
        {
                global $ilClientIniFile, $ilSetting, $rbacadmin, $ilLog;

                $userObj = new ilObjUser();

                include_once('./Services/Authentication/classes/class.ilAuthUtils.php');
                $local_user = ilAuthUtils::_generateLogin($this->getAbreviation() . '_' . $user->getLogin());

                $newUser["login"] = $local_user;
                $newUser["firstname"] = $user->getFirstname();
                $newUser["lastname"] = $user->getLastname();
                $newUser['email'] = $user->getEmail();
                $newUser['institution'] = $user->getInstitution();

                // set "plain md5" password (= no valid password)
                $newUser["passwd"] = "";
                $newUser["passwd_type"] = IL_PASSWD_MD5;

                $newUser["auth_mode"] = "ecs";
                $newUser["profile_incomplete"] = 0;

                // system data
                $userObj->assignData($newUser);
                $userObj->setTitle($userObj->getFullname());
                $userObj->setDescription($userObj->getEmail());

                // set user language to system language
                $userObj->setLanguage($ilSetting->get("language"));

                // Time limit
                $userObj->setTimeLimitOwner(7);
                $userObj->setTimeLimitUnlimited(0);
                $userObj->setTimeLimitFrom(time() - 5);
                $userObj->setTimeLimitUntil(time() + $ilClientIniFile->readVariable("session", "expire"));

                // Create user in DB
                $userObj->setOwner(6);
                $userObj->create();
                $userObj->setActive(1);
                $userObj->updateOwner();
                $userObj->saveAsNew();
                $userObj->writePrefs();

                if($global_role = $this->getCurrentServer()->getGlobalRole())
                {
                        $rbacadmin->assignUser($this->getCurrentServer()->getGlobalRole(), $userObj->getId(), true);
                }
                ilObject::_writeImportId($userObj->getId(), $user->getImportId());

                $ilLog->write(__METHOD__ . ': Created new remote user with usr_id: ' . $user->getImportId());

                // Send Mail
                #$this->sendNotification($userObj);

                return $userObj->getLogin();
        }
        
        protected function updateUser(ilECSUser $user,$a_local_user_id)
        {
                global $ilClientIniFile,$ilLog,$rbacadmin;
                
                $user_obj = new ilObjUser($a_local_user_id);
                $user_obj->setFirstname($user->getFirstname());
                $user_obj->setLastname($user->getLastname());
                $user_obj->setEmail($user->getEmail());
                $user_obj->setInstitution($user->getInstitution());
                
                $until = $user_obj->getTimeLimitUntil();
                $user_obj->setTimeLimitFrom(time() - 5);

                if($until < (time() + $ilClientIniFile->readVariable('session','expire')))
                {               
                        $user_obj->setTimeLimitUntil(time() + $ilClientIniFile->readVariable("session","expire"));
                }
                $user_obj->update();
                $user_obj->refreshLogin();
                
                if($global_role = $this->getCurrentServer()->getGlobalRole())
                {
                        $rbacadmin->assignUser(
                                $this->getCurrentServer()->getGlobalRole(),
                                $user_obj->getId(),
                                true
                        );
                }

                $ilLog->write(__METHOD__.': Finished update of remote user with usr_id: '.$user->getImportId());        
                return $user_obj->getLogin();
        }
        

        private function initECSServices()
        {
                include_once './Services/WebServices/ECS/classes/class.ilECSServerSettings.php';
                $this->servers = ilECSServerSettings::getInstance();
        }
        
        private function sendNotification($user_obj)
        {
                if(!count($this->getCurrentServer()->getUserRecipients()))
                {
                        return true;
                }

                include_once('./Services/Language/classes/class.ilLanguageFactory.php');
                $lang = ilLanguageFactory::_getLanguage();
                $GLOBALS['lng'] = $lang;
                $GLOBALS['ilUser'] = $user_obj;
                $lang->loadLanguageModule('ecs');

                include_once('./Services/Mail/classes/class.ilMail.php');
                $mail = new ilMail(6);
                $mail->enableSoap(false);
                $subject = $lang->txt('ecs_new_user_subject');

                                // build body
                $body = $lang->txt('ecs_new_user_body')."\n\n";
                $body .= $lang->txt('ecs_new_user_profile')."\n\n";
                $body .= $user_obj->getProfileAsString($lang)."\n\n";
                $body .= ilMail::_getAutoGeneratedMessageString($lang);
                
                $mail->sendMail(
                        $this->getCurrentServer()->getUserRecipientsAsString(),
                        "",
                        "",
                        $subject,
                        $body,
                        array(),
                        array("normal")
                );
        }
}
?>