class.ilChatroomConfigFileHandler.php

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<?php
/* Copyright (c) 1998-2016 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilChatroomConfigFileHandler
{
        const CHATROOM_DATA_DIR = '/chatroom/';
        const CHATROOM_CLIENT_CONFIG_FILENAME = 'client.cfg';
        const CHATROOM_SERVER_CONFIG_FILENAME = 'server.cfg';

        public function createClientConfigFile(array $settings)
        {
                $content = $this->getClientFileContent($settings);
                $this->writeDataToFile($content, self::CHATROOM_CLIENT_CONFIG_FILENAME);
        }

        protected function getClientFileContent(array $settings)
        {
                global $ilClientIniFile;

                // Dirty configuration swap: Ilias differentiates between InnoDB and MyISAM.
                // MyISAM is configured as mysql, InnoDB as innodb.
                // The client config file only needs information about driver not engine
                $type = $a_type = $ilClientIniFile->readVariable('db', 'type');
                if(in_array($type, array(
                        ilDBConstants::TYPE_MYSQL,
                        ilDBConstants::TYPE_INNODB,
                        ilDBConstants::TYPE_PDO_MYSQL_INNODB,
                        ilDBConstants::TYPE_PDO_MYSQL_MYISAM,
                        ''
                )))
                {
                        $type = 'mysql';
                }

                $settings['database'] = array(
                        'type' => $type,
                        'host' => $ilClientIniFile->readVariable('db', 'host'),
                        'port' => (int)$ilClientIniFile->readVariable('db', 'port'),
                        'name' => $ilClientIniFile->readVariable('db', 'name'),
                        'user' => $ilClientIniFile->readVariable('db', 'user'),
                        'pass' => $ilClientIniFile->readVariable('db', 'pass')
                );

                return json_encode($settings, JSON_PRETTY_PRINT);
        }

        protected function writeDataToFile($content, $filename)
        {
                $path   = $this->createDataDirIfNotExists();
                $handle = fopen($path . $filename, 'w');

                if(!fwrite($handle, $content))
                {
                        throw new Exception('Cannot write to file');
                }

                fclose($handle);
        }

        protected function createDataDirIfNotExists()
        {
                $path = ilUtil::getDataDir() . self::CHATROOM_DATA_DIR;

                if(!file_exists($path))
                {
                        if(!ilUtil::makeDir($path))
                        {
                                throw new Exception('Directory cannot be created');
                        }
                }

                return $path;
        }

        public function createServerConfigFile(array $settings)
        {
                $content = $this->getServerFileContent($settings);
                $this->writeDataToFile($content, self::CHATROOM_SERVER_CONFIG_FILENAME);
        }

        protected function getServerFileContent(array $settings)
        {
                unset($settings['ilias_proxy']);
                unset($settings['client_proxy']);
                unset($settings['ilias_url']);
                unset($settings['client_url']);

                return json_encode($settings, JSON_PRETTY_PRINT);
        }
}