e6609d0970
if dbuser exists try a different one, owncloud/core#108 changed outdated comment corrected length calculation changed indentation for else clauses
109 lines
3.8 KiB
PHP
109 lines
3.8 KiB
PHP
<?php
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namespace OC\Setup;
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class MySQL extends AbstractDatabase {
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public $dbprettyname = 'MySQL/MariaDB';
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public function setupDatabase($username) {
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//check if the database user has admin right
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$connection = @mysql_connect($this->dbhost, $this->dbuser, $this->dbpassword);
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if(!$connection) {
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throw new \DatabaseSetupException($this->trans->t('MySQL/MariaDB username and/or password not valid'),
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$this->trans->t('You need to enter either an existing account or the administrator.'));
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}
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//user already specified in config
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$oldUser=\OC_Config::getValue('dbuser', false);
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//we don't have a dbuser specified in config
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if($this->dbuser!=$oldUser) {
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//add prefix to the admin username to prevent collisions
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$adminUser=substr('oc_'.$username, 0, 16);
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$i = 1;
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while(true) {
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//this should be enough to check for admin rights in mysql
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$query="SELECT user FROM mysql.user WHERE user='$adminUser'";
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$result = mysql_query($query, $connection);
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//current dbuser has admin rights
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if($result) {
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//new dbuser does not exist
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if(mysql_num_rows($result) === 0) {
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//use the admin login data for the new database user
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$this->dbuser=$adminUser;
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//create a random password so we don't need to store the admin password in the config file
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$this->dbpassword=\OC_Util::generateRandomBytes(30);
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$this->createDBUser($connection);
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break;
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} else {
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//repeat with different username
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$length=strlen((string)$i);
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$adminUser=substr('oc_'.$username, 0, 16 - $length).$i;
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$i++;
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}
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} else {
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break;
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}
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};
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\OC_Config::setValue('dbuser', $this->dbuser);
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\OC_Config::setValue('dbpassword', $this->dbpassword);
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}
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//create the database
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$this->createDatabase($connection);
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//fill the database if needed
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$query='select count(*) from information_schema.tables'
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." where table_schema='".$this->dbname."' AND table_name = '".$this->tableprefix."users';";
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$result = mysql_query($query, $connection);
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if($result) {
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$row=mysql_fetch_row($result);
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}
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if(!$result or $row[0]==0) {
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\OC_DB::createDbFromStructure($this->dbDefinitionFile);
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}
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mysql_close($connection);
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}
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private function createDatabase($connection) {
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$name = $this->dbname;
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$user = $this->dbuser;
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//we cant use OC_BD functions here because we need to connect as the administrative user.
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$query = "CREATE DATABASE IF NOT EXISTS `$name` CHARACTER SET utf8 COLLATE utf8_bin;";
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$result = mysql_query($query, $connection);
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if(!$result) {
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$entry = $this->trans->t('DB Error: "%s"', array(mysql_error($connection))) . '<br />';
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$entry .= $this->trans->t('Offending command was: "%s"', array($query)) . '<br />';
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\OC_Log::write('setup.mssql', $entry, \OC_Log::WARN);
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}
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$query="GRANT ALL PRIVILEGES ON `$name` . * TO '$user'";
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//this query will fail if there aren't the right permissions, ignore the error
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mysql_query($query, $connection);
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}
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private function createDBUser($connection) {
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$name = $this->dbuser;
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$password = $this->dbpassword;
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// we need to create 2 accounts, one for global use and one for local user. if we don't specify the local one,
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// the anonymous user would take precedence when there is one.
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$query = "CREATE USER '$name'@'localhost' IDENTIFIED BY '$password'";
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$result = mysql_query($query, $connection);
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if (!$result) {
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throw new \DatabaseSetupException($this->trans->t("MySQL/MariaDB user '%s'@'localhost' exists already.", array($name)),
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$this->trans->t("Drop this user from MySQL/MariaDB", array($name)));
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}
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$query = "CREATE USER '$name'@'%' IDENTIFIED BY '$password'";
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$result = mysql_query($query, $connection);
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if (!$result) {
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throw new \DatabaseSetupException($this->trans->t("MySQL/MariaDB user '%s'@'%%' already exists", array($name)),
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$this->trans->t("Drop this user from MySQL/MariaDB."));
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}
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}
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}
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