setup.php

<?php

class DatabaseSetupException extends Exception
{
	private $hint;

	public function __construct($message, $hint, $code = 0, Exception $previous = null) {
		$this->hint = $hint;
		parent::__construct($message, $code, $previous);
	}

	public function __toString() {
		return __CLASS__ . ": [{$this->code}]: {$this->message} ({$this->hint})\n";
	}

	public function getHint() {
		return $this->hint;
	}
}

class OC_Setup {

	public static function getTrans(){
		return OC_L10N::get('lib');
	}

	public static function install($options) {
		$l = self::getTrans();

		$error = array();
		$dbtype = $options['dbtype'];

		if(empty($options['adminlogin'])) {
			$error[] = $l->t('Set an admin username.');
		}
		if(empty($options['adminpass'])) {
			$error[] = $l->t('Set an admin password.');
		}
		if(empty($options['directory'])) {
			$options['directory'] = OC::$SERVERROOT."/data";
		}

		if($dbtype == 'mysql' or $dbtype == 'pgsql' or $dbtype == 'oci' or $dbtype == 'mssql') { //mysql and postgresql needs more config options
			if($dbtype == 'mysql')
				$dbprettyname = 'MySQL';
			else if($dbtype == 'pgsql')
				$dbprettyname = 'PostgreSQL';
			else if ($dbtype == 'mssql')
				$dbprettyname = 'MS SQL Server';
			else
				$dbprettyname = 'Oracle';


			if(empty($options['dbuser'])) {
				$error[] = $l->t("%s enter the database username.", array($dbprettyname));
			}
			if(empty($options['dbname'])) {
				$error[] = $l->t("%s enter the database name.", array($dbprettyname));
			}
			if(substr_count($options['dbname'], '.') >= 1) {
				$error[] = $l->t("%s you may not use dots in the database name", array($dbprettyname));
			}
			if($dbtype != 'oci' && empty($options['dbhost'])) {
				$error[] = $l->t("%s set the database host.", array($dbprettyname));
			}
		}

		if(count($error) == 0) { //no errors, good
			$username = htmlspecialchars_decode($options['adminlogin']);
			$password = htmlspecialchars_decode($options['adminpass']);