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<?php
namespace OC\Setup;
class MySQL extends AbstractDatabase {
public $dbprettyname = 'MySQL/MariaDB';
public function setupDatabase($username) {
//check if the database user has admin right
$connection = @mysql_connect($this->dbhost, $this->dbuser, $this->dbpassword);
if(!$connection) {
throw new \DatabaseSetupException($this->trans->t('MySQL/MariaDB username and/or password not valid'),
$this->trans->t('You need to enter either an existing account or the administrator.'));
}
//user already specified in config
$oldUser=\OC_Config::getValue('dbuser', false);
//we don't have a dbuser specified in config
if($this->dbuser!=$oldUser) {
//add prefix to the admin username to prevent collisions
$adminUser=substr('oc_'.$username, 0, 16);
$i = 1;
while(true) {
//this should be enough to check for admin rights in mysql
$query="SELECT user FROM mysql.user WHERE user='$adminUser'";
$result = mysql_query($query, $connection);
//current dbuser has admin rights
if($result) {
//new dbuser does not exist
if(mysql_num_rows($result) === 0) {
//use the admin login data for the new database user
$this->dbuser=$adminUser;
//create a random password so we don't need to store the admin password in the config file
$this->dbpassword=\OC_Util::generateRandomBytes(30);
$this->createDBUser($connection);
break;
} else {
//repeat with different username
$length=strlen((string)$i);
$adminUser=substr('oc_'.$username, 0, 16 - $length).$i;
$i++;
}
} else {
break;
}
};
\OC_Config::setValue('dbuser', $this->dbuser);
\OC_Config::setValue('dbpassword', $this->dbpassword);
}
//create the database
$this->createDatabase($connection);
//fill the database if needed
$query='select count(*) from information_schema.tables'
." where table_schema='".$this->dbname."' AND table_name = '".$this->tableprefix."users';";
$result = mysql_query($query, $connection);
if($result) {
$row=mysql_fetch_row($result);
}
if(!$result or $row[0]==0) {
\OC_DB::createDbFromStructure($this->dbDefinitionFile);
}
mysql_close($connection);
}
private function createDatabase($connection) {
$name = $this->dbname;
$user = $this->dbuser;
//we cant use OC_BD functions here because we need to connect as the administrative user.
$query = "CREATE DATABASE IF NOT EXISTS `$name` CHARACTER SET utf8 COLLATE utf8_bin;";
$result = mysql_query($query, $connection);
if(!$result) {
$entry = $this->trans->t('DB Error: "%s"', array(mysql_error($connection))) . '<br />';
$entry .= $this->trans->t('Offending command was: "%s"', array($query)) . '<br />';
\OC_Log::write('setup.mssql', $entry, \OC_Log::WARN);
}
$query="GRANT ALL PRIVILEGES ON `$name` . * TO '$user'";
//this query will fail if there aren't the right permissions, ignore the error
mysql_query($query, $connection);
}
private function createDBUser($connection) {
$name = $this->dbuser;
$password = $this->dbpassword;
// we need to create 2 accounts, one for global use and one for local user. if we don't specify the local one,
// the anonymous user would take precedence when there is one.
$query = "CREATE USER '$name'@'localhost' IDENTIFIED BY '$password'";
$result = mysql_query($query, $connection);
if (!$result) {
throw new \DatabaseSetupException($this->trans->t("MySQL/MariaDB user '%s'@'localhost' exists already.", array($name)),
$this->trans->t("Drop this user from MySQL/MariaDB", array($name)));
}
$query = "CREATE USER '$name'@'%' IDENTIFIED BY '$password'";
$result = mysql_query($query, $connection);
if (!$result) {
throw new \DatabaseSetupException($this->trans->t("MySQL/MariaDB user '%s'@'%%' already exists", array($name)),
$this->trans->t("Drop this user from MySQL/MariaDB."));
}
}
}
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