connect(['dbname' => null]);
// detect mb4
$tools = new MySqlTools();
if ($tools->supports4ByteCharset(new ConnectionAdapter($connection))) {
$this->config->setValue('mysql.utf8mb4', true);
$connection = $this->connect(['dbname' => null]);
}
if ($this->tryCreateDbUser) {
$this->createSpecificUser($username, new ConnectionAdapter($connection));
}
$this->config->setValues([
'dbuser' => $this->dbUser,
'dbpassword' => $this->dbPassword,
]);
//create the database
$this->createDatabase($connection);
//fill the database if needed
$query = 'select count(*) from information_schema.tables where table_schema=? AND table_name = ?';
$connection->executeQuery($query, [$this->dbName, $this->tablePrefix . 'users']);
$connection->close();
$connection = $this->connect();
try {
$connection->connect();
} catch (\Exception $e) {
$this->logger->error($e->getMessage(), [
'exception' => $e,
]);
throw new \OC\DatabaseSetupException($this->trans->t('MySQL Login and/or password not valid'),
$this->trans->t('You need to enter details of an existing account.'), 0, $e);
}
}
/**
* @param \OC\DB\Connection $connection
*/
private function createDatabase($connection) {
try {
$name = $this->dbName;
$user = $this->dbUser;
//we can't use OC_DB functions here because we need to connect as the administrative user.
$characterSet = $this->config->getValue('mysql.utf8mb4', false) ? 'utf8mb4' : 'utf8';
$query = "CREATE DATABASE IF NOT EXISTS `$name` CHARACTER SET $characterSet COLLATE {$characterSet}_bin;";
$connection->executeUpdate($query);
} catch (\Exception $ex) {
$this->logger->error('Database creation failed.', [
'exception' => $ex,
'app' => 'mysql.setup',
]);
return;
}
try {
//this query will fail if there aren't the right permissions, ignore the error
$query = "GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, REFERENCES, INDEX, ALTER, CREATE TEMPORARY TABLES, LOCK TABLES, EXECUTE, CREATE VIEW, SHOW VIEW, CREATE ROUTINE, ALTER ROUTINE, EVENT, TRIGGER ON `$name` . * TO '$user'";
$connection->executeUpdate($query);
} catch (\Exception $ex) {
$this->logger->debug('Could not automatically grant privileges, this can be ignored if database user already had privileges.', [
'exception' => $ex,
'app' => 'mysql.setup',
]);
}
}
/**
* @param IDBConnection $connection
* @throws \OC\DatabaseSetupException
*/
private function createDBUser($connection) {
try {
$name = $this->dbUser;
$password = $this->dbPassword;
// we need to create 2 accounts, one for global use and one for local user. if we don't specify the local one,
// the anonymous user would take precedence when there is one.
if ($connection->getDatabasePlatform() instanceof Mysql80Platform) {
$query = "CREATE USER '$name'@'localhost' IDENTIFIED WITH mysql_native_password BY '$password'";
$connection->executeUpdate($query);
$query = "CREATE USER '$name'@'%' IDENTIFIED WITH mysql_native_password BY '$password'";
$connection->executeUpdate($query);
} else {
$query = "CREATE USER '$name'@'localhost' IDENTIFIED BY '$password'";
$connection->executeUpdate($query);
$query = "CREATE USER '$name'@'%' IDENTIFIED BY '$password'";
$connection->executeUpdate($query);
}
} catch (\Exception $ex) {
$this->logger->error('Database user creation failed.', [
'exception' => $ex,
'app' => 'mysql.setup',
]);
throw $ex;
}
}
/**
* @param $username
* @param IDBConnection $connection
*/
private function createSpecificUser($username, $connection): void {
$rootUser = $this->dbUser;
$rootPassword = $this->dbPassword;
//create a random password so we don't need to store the admin password in the config file
$saveSymbols = str_replace(['\"', '\\', '\'', '`'], '', ISecureRandom::CHAR_SYMBOLS);
$password = $this->random->generate(22, ISecureRandom::CHAR_ALPHANUMERIC . $saveSymbols)
. $this->random->generate(2, ISecureRandom::CHAR_UPPER)
. $this->random->generate(2, ISecureRandom::CHAR_LOWER)
. $this->random->generate(2, ISecureRandom::CHAR_DIGITS)
. $this->random->generate(2, $saveSymbols);
$this->dbPassword = str_shuffle($password);
try {
//user already specified in config
$oldUser = $this->config->getValue('dbuser', false);
//we don't have a dbuser specified in config
if ($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=?';
$result = $connection->executeQuery($query, [$adminUser]);
//current dbuser has admin rights
$data = $result->fetchAll();
$result->closeCursor();
//new dbuser does not exist
if (count($data) === 0) {
//use the admin login data for the new database user
$this->dbUser = $adminUser;
$this->createDBUser($connection);
break;
} else {
//repeat with different username
$length = strlen((string)$i);
$adminUser = substr('oc_' . $username, 0, 16 - $length) . $i;
$i++;
}
}
} else {
// Reuse existing password if a database config is already present
$this->dbPassword = $rootPassword;
}
} catch (\Exception $ex) {
$this->logger->info('Can not create a new MySQL user, will continue with the provided user.', [
'exception' => $ex,
'app' => 'mysql.setup',
]);
// Restore the original credentials
$this->dbUser = $rootUser;
$this->dbPassword = $rootPassword;
}
}
}
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