class.ilLDAPUserSynchronisation.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once './Services/LDAP/classes/class.ilLDAPServer.php';
include_once './Services/LDAP/exceptions/class.ilLDAPSynchronisationForbiddenException.php';
include_once './Services/LDAP/exceptions/class.ilLDAPAccountMigrationRequiredException.php';

class ilLDAPUserSynchronisation
{
        private $authmode = 0;

        private $server = null;

        private $extaccount = '';
        private $intaccount = '';

        private $user_data = array();
        
        private $force_creation = false;


        public function __construct($a_authmode,$a_server_id)
        {
                $this->initServer($a_authmode,$a_server_id);
        }

        public function getServer()
        {
                return $this->server;
        }

        public function getAuthMode()
        {
                return $this->authmode;
        }

        public function setExternalAccount($a_ext)
        {
                $this->extaccount = $a_ext;
        }

        public function getExternalAccount()
        {
                return $this->extaccount;
        }

        public function getInternalAccount()
        {
                return $this->intaccount;
        }
        
        public function forceCreation($a_force)
        {
                $this->force_creation = $a_force;
        }

        public function isCreationForced()
        {
                return (bool) $this->force_creation;
        }

        public function getUserData()
        {
                return (array) $this->user_data;
        }

        public function setUserData($a_data)
        {
                $this->user_data = (array) $a_data;
        }

        public function sync()
        {
                $this->readInternalAccount();
                
                if(!$this->getInternalAccount())
                {
                        #$GLOBALS['ilLog']->write(__METHOD__.'Creating new account');
                        $this->handleCreation();
                }

                // Nothing to if sync on login is disabled
                if(!$this->getServer()->enabledSyncOnLogin())
                {
                        return $this->getInternalAccount();
                }

                // For performance reasons, check if (an update is required)
                if($this->isUpdateRequired())
                {
                        $this->readUserData();
                        $this->performUpdate();
                }
                return $this->getInternalAccount();
        }

        protected function handleCreation()
        {
                // Disabled sync on login
                if(!$this->getServer()->enabledSyncOnLogin())
                {
                        throw new ilLDAPSynchronisationForbiddenException('User synchronisation forbidden.');
                }
                // Account migration
                if($this->getServer()->isAccountMigrationEnabled() and !$this->isCreationForced())
                {
                        $this->readUserData();
                        $this->handleAccountMigration();
                        throw new ilLDAPAccountMigrationRequiredException('Account migration check required.');
                }
        }

        protected function handleAccountMigration()
        {
                // TODO: handle multiple ldap server
                
                $_SESSION['tmp_auth_mode'] = $this->getAuthMode();
                $_SESSION['tmp_external_account'] = $this->getExternalAccount();
                $_SESSION['tmp_pass'] = $_POST['password'];
                
                include_once './Services/LDAP/classes/class.ilLDAPRoleAssignmentRules.php';
                $roles = ilLDAPRoleAssignmentRules::getAssignmentsForCreation(
                        $this->getExternalAccount(),
                        $this->getUserData()
                );
                
                $_SESSION['tmp_roles'] = array();
                foreach($roles as $info)
                {
                        if($info['action'] == ilLDAPRoleAssignmentRules::ROLE_ACTION_ASSIGN)
                        {
                                $_SESSION['tmp_roles'][] = $info['id']; 
                        }
                }
                return true;
        }

        protected function performUpdate()
        {
                #$GLOBALS['ilLog']->write(__METHOD__.': '.print_r($this->getUserData(),true));

                include_once './Services/User/classes/class.ilUserCreationContext.php';
                ilUserCreationContext::getInstance()->addContext(ilUserCreationContext::CONTEXT_LDAP);

                include_once 'Services/LDAP/classes/class.ilLDAPAttributeToUser.php';
                $update = new ilLDAPAttributeToUser($this->getServer());
                $update->setNewUserAuthMode($this->getAuthMode());
                $update->setUserData(
                        array(
                                $this->getExternalAccount() => $this->getUserData()
                        )
                );
                $update->refresh();

                // User has been created, now read internal account again
                $this->readInternalAccount();
                return true;
        }

        protected function readUserData()
        {
                // Add internal account to user data
                $this->user_data['ilInternalAccount'] = $this->getInternalAccount();

                if(substr($this->getAuthMode(),0,4) == 'ldap')
                {
                        return true;
                }
                include_once './Services/LDAP/classes/class.ilLDAPQuery.php';
                $query = new ilLDAPQuery($this->getServer());
                $user = $query->fetchUser($this->getExternalAccount());

                $this->user_data = (array) $user[$this->getExternalAccount()];
        }


        protected function readInternalAccount()
        {
                if(!$this->getExternalAccount())
                {
                        throw new UnexpectedValueException('No external account given.');
                }
                $this->intaccount = ilObjUser::_checkExternalAuthAccount(
                        $this->getAuthMode(),
                        $this->getExternalAccount()
                );
        }

        protected function isUpdateRequired()
        {
                if(!$this->getInternalAccount())
                {
                        return true;
                }

                // Check attribute mapping on login
                include_once './Services/LDAP/classes/class.ilLDAPAttributeMapping.php';
                if(ilLDAPAttributeMapping::hasRulesForUpdate($this->getServer()->getServerId()))
                {
                        return true;
                }

                // Check if there is any change in role assignments
                include_once './Services/LDAP/classes/class.ilLDAPRoleAssignmentRule.php';
                if(ilLDAPRoleAssignmentRule::hasRulesForUpdate())
                {
                        return true;
                }
                return false;
        }


        protected function initServer($a_auth_mode,$a_server_id)
        {
                $this->authmode = $a_auth_mode;
                $this->server = ilLDAPServer::getInstanceByServerId($a_server_id);
        }
}
?>