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 $DIC;

        // 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 = $DIC['ilClientIniFile']->readVariable('db', 'type');
        if (in_array($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' => $DIC['ilClientIniFile']->readVariable('db', 'host'),
            'port' => (int) $DIC['ilClientIniFile']->readVariable('db', 'port'),
            'name' => $DIC['ilClientIniFile']->readVariable('db', 'name'),
            'user' => $DIC['ilClientIniFile']->readVariable('db', 'user'),
            'pass' => $DIC['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);
    }
}