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 setMID($a_mid)
    {
        $this->mid = $a_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;
        
        // fetch hash
        if (isset($_GET['ecs_hash']) and strlen($_GET['ecs_hash'])) {
            $hash = $_GET['ecs_hash'];
        }
        if (isset($_GET['ecs_hash_url'])) {
            $hashurl = urldecode($_GET['ecs_hash_url']);
            $hash = basename(parse_url($hashurl, PHP_URL_PATH));
            //$hash = urldecode($_GET['ecs_hash_url']);
        }
        
        $GLOBALS['ilLog']->write(__METHOD__ . ': Using ecs hash ' . $hash);

        // Check if hash is valid ...
        try {
            include_once('./Services/WebServices/ECS/classes/class.ilECSConnector.php');
            $connector = new ilECSConnector($this->getCurrentServer());
            $res = $connector->getAuth($hash);
            $auths = $res->getResult();
            
            $GLOBALS['ilLog']->write(__METHOD__ . ': Auths: ' . print_r($auths, true));
            
            if ($auths->pid) {
                try {
                    include_once './Services/WebServices/ECS/classes/class.ilECSCommunityReader.php';
                    $reader = ilECSCommunityReader::getInstanceByServerId($this->getCurrentServer()->getServerId());
                    $part = $reader->getParticipantByMID($auths->pid);
                    
                    if (is_object($part) and is_object($part->getOrganisation())) {
                        $this->abreviation = $part->getOrganisation()->getAbbreviation();
                    } else {
                        $this->abreviation = $auths->abbr;
                    }
                } catch (Exception $e) {
                    $ilLog->write(__METHOD__ . ': Authentication failed with message: ' . $e->getMessage());
                    return false;
                }
            } else {
                $this->abreviation = $auths->abbr;
            }
            
            $ilLog->write(__METHOD__ . ': Got abr: ' . $this->abreviation);
        } catch (ilECSConnectorException $e) {
            $ilLog->write(__METHOD__ . ': Authentication failed with message: ' . $e->getMessage());
            return false;
        }
        
        // read current mid
        try {
            include_once('./Services/WebServices/ECS/classes/class.ilECSConnector.php');
            $connector = new ilECSConnector($this->getCurrentServer());
            $details = $connector->getAuth($hash, true);
            
            $GLOBALS['ilLog']->write(__METHOD__ . ': ' . print_r($details, true));
            $GLOBALS['ilLog']->write(__METHOD__ . ': Token created for mid ' . $details->getFirstSender());
            
            $this->setMID($details->getFirstSender());
        } catch (ilECSConnectorException $e) {
            $ilLog->write(__METHOD__ . ': Receiving mid failed with message: ' . $e->getMessage());
            return false;
        }
        return true;
    }
    
    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);
        }
        
        // set user imported
        include_once './Services/WebServices/ECS/classes/class.ilECSImport.php';
        $import = new ilECSImport($this->getCurrentServer()->getServerId(), $usr_id);
        $import->save();
        
        // Store remote user data
        include_once './Services/WebServices/ECS/classes/class.ilECSRemoteUser.php';
        $remote = new ilECSRemoteUser();
        $remote->setServerId($this->getCurrentServer()->getServerId());
        $remote->setMid($this->getMID());
        $remote->setRemoteUserId($user->getImportId());
        $remote->setUserId(ilObjUser::_lookupId($username));
        
        $GLOBALS['ilLog']->write(__METHOD__ . ': Current username ' . $username);
        
        if (!$remote->exists()) {
            $remote->create();
        }
        
        $a_auth->setAuth($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();
        $userObj->setOwner(SYSTEM_USER_ID);

        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_CRYPTED;

        $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"));

        #$now = new ilDateTime(time(), IL_CAL_UNIX);
        #$userObj->setAgreeDate($now->get(IL_CAL_DATETIME));

        // 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);
        $this->resetMailOptions($userObj->getId());
        
        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());
        $user_obj->setActive(true);
        
        $until = $user_obj->getTimeLimitUntil();

        if ($until < (time() + $ilClientIniFile->readVariable('session', 'expire'))) {
            $user_obj->setTimeLimitFrom(time() - 60);
            $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
            );
        }
        
        $this->resetMailOptions($a_local_user_id);

        $ilLog->write(__METHOD__ . ': Finished update of remote user with usr_id: ' . $user->getImportId());
        return $user_obj->getLogin();
    }
    
    protected function resetMailOptions($a_usr_id)
    {
        include_once './Services/Mail/classes/class.ilMailOptions.php';
        $options = new ilMailOptions($a_usr_id);
        $options->setIncomingType(ilMailOptions::INCOMING_LOCAL);
        $options->updateOptions();
    }
    

    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');
        include_once './Services/Language/classes/class.ilLanguage.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")
        );
    }
}