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168 lines
5.7 KiB
168 lines
5.7 KiB
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Bart Visscher <bartv@thisnet.nl>
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* @author eduardo <eduardo@vnexu.net>
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* @author Joas Schilling <coding@schilljs.com>
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* @author Lukas Reschke <lukas@statuscode.ch>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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* @author Vitor Mattos <vitor@php.rio>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\Setup;
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use OC\DatabaseException;
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use OC\DB\QueryBuilder\Literal;
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use OCP\IDBConnection;
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class PostgreSQL extends AbstractDatabase {
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public $dbprettyname = 'PostgreSQL';
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/**
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* @param string $username
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* @throws \OC\DatabaseSetupException
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*/
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public function setupDatabase($username) {
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try {
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$connection = $this->connect([
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'dbname' => 'postgres'
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]);
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//check for roles creation rights in postgresql
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$builder = $connection->getQueryBuilder();
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$builder->automaticTablePrefix(false);
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$query = $builder
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->select('rolname')
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->from('pg_roles')
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->where($builder->expr()->eq('rolcreaterole', new Literal('TRUE')))
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->andWhere($builder->expr()->eq('rolname', $builder->createNamedParameter($this->dbUser)));
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try {
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$result = $query->execute();
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$canCreateRoles = $result->rowCount() > 0;
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} catch (DatabaseException $e) {
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$canCreateRoles = false;
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}
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if ($canCreateRoles) {
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//use the admin login data for the new database user
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//add prefix to the postgresql user name to prevent collisions
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$this->dbUser = 'oc_' . strtolower($username);
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//create a new password so we don't need to store the admin config in the config file
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$this->dbPassword = \OC::$server->getSecureRandom()->generate(30, \OCP\Security\ISecureRandom::CHAR_LOWER . \OCP\Security\ISecureRandom::CHAR_DIGITS);
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$this->createDBUser($connection);
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}
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$this->config->setValues([
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'dbuser' => $this->dbUser,
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'dbpassword' => $this->dbPassword,
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]);
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//create the database
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$this->createDatabase($connection);
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// the connection to dbname=postgres is not needed anymore
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$connection->close();
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} catch (\Exception $e) {
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$this->logger->logException($e);
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$this->logger->warning('Error trying to connect as "postgres", assuming database is setup and tables need to be created');
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$this->config->setValues([
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'dbuser' => $this->dbUser,
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'dbpassword' => $this->dbPassword,
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]);
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}
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// connect to the database (dbname=$this->dbname) and check if it needs to be filled
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$this->dbUser = $this->config->getValue('dbuser');
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$this->dbPassword = $this->config->getValue('dbpassword');
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$connection = $this->connect();
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try {
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$connection->connect();
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} catch (\Exception $e) {
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$this->logger->logException($e);
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throw new \OC\DatabaseSetupException($this->trans->t('PostgreSQL username and/or password not valid'),
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$this->trans->t('You need to enter details of an existing account.'));
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}
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}
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private function createDatabase(IDBConnection $connection) {
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if (!$this->databaseExists($connection)) {
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//The database does not exists... let's create it
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$query = $connection->prepare("CREATE DATABASE " . addslashes($this->dbName) . " OWNER " . addslashes($this->dbUser));
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try {
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$query->execute();
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} catch (DatabaseException $e) {
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$this->logger->error('Error while trying to create database');
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$this->logger->logException($e);
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}
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} else {
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$query = $connection->prepare("REVOKE ALL PRIVILEGES ON DATABASE " . addslashes($this->dbName) . " FROM PUBLIC");
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try {
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$query->execute();
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} catch (DatabaseException $e) {
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$this->logger->error('Error while trying to restrict database permissions');
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$this->logger->logException($e);
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}
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}
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}
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private function userExists(IDBConnection $connection) {
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$builder = $connection->getQueryBuilder();
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$builder->automaticTablePrefix(false);
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$query = $builder->select('*')
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->from('pg_roles')
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->where($builder->expr()->eq('rolname', $builder->createNamedParameter($this->dbUser)));
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$result = $query->execute();
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return $result->rowCount() > 0;
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}
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private function databaseExists(IDBConnection $connection) {
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$builder = $connection->getQueryBuilder();
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$builder->automaticTablePrefix(false);
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$query = $builder->select('datname')
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->from('pg_database')
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->where($builder->expr()->eq('datname', $builder->createNamedParameter($this->dbName)));
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$result = $query->execute();
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return $result->rowCount() > 0;
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}
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private function createDBUser(IDBConnection $connection) {
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$dbUser = $this->dbUser;
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try {
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$i = 1;
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while ($this->userExists($connection)) {
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$i++;
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$this->dbUser = $dbUser . $i;
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}
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// create the user
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$query = $connection->prepare("CREATE USER " . addslashes($this->dbUser) . " CREATEDB PASSWORD '" . addslashes($this->dbPassword) . "'");
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$query->execute();
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if ($this->databaseExists($connection)) {
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$query = $connection->prepare('GRANT CONNECT ON DATABASE ' . addslashes($this->dbName) . ' TO '.addslashes($this->dbUser));
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$query->execute();
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}
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} catch (DatabaseException $e) {
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$this->logger->error('Error while trying to create database user');
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$this->logger->logException($e);
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}
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}
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}
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