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<?php
/**
* @author Andreas Fischer <bantu@owncloud.com>
* @author Bart Visscher <bartv@thisnet.nl>
* @author Joas Schilling <nickvergessen@owncloud.com>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Manish Bisht <manish.bisht490@gmail.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Roeland Jago Douma <rullzer@owncloud.com>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Victor Dubiniuk <dubiniuk@owncloud.com>
*
* @copyright Copyright (c) 2016, ownCloud, Inc.
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\Setup;
class OCI extends AbstractDatabase {
public $dbprettyname = 'Oracle';
protected $dbtablespace;
public function initialize($config) {
parent::initialize($config);
if (array_key_exists('dbtablespace', $config)) {
$this->dbtablespace = $config['dbtablespace'];
} else {
$this->dbtablespace = 'USERS';
}
// allow empty hostname for oracle
$this->dbHost = $config['dbhost'];
$this->config->setSystemValues([
'dbhost' => $this->dbHost,
'dbtablespace' => $this->dbtablespace,
]);
}
public function validate($config) {
$errors = array();
if(empty($config['dbuser']) && empty($config['dbname'])) {
$errors[] = $this->trans->t("%s enter the database username and name.", array($this->dbprettyname));
} else if(empty($config['dbuser'])) {
$errors[] = $this->trans->t("%s enter the database username.", array($this->dbprettyname));
} else if(empty($config['dbname'])) {
$errors[] = $this->trans->t("%s enter the database name.", array($this->dbprettyname));
}
return $errors;
}
public function setupDatabase($username) {
$e_host = addslashes($this->dbHost);
// casting to int to avoid malicious input
$e_port = (int)$this->dbPort;
$e_dbname = addslashes($this->dbName);
//check if the database user has admin right
if ($e_host == '') {
$easy_connect_string = $e_dbname; // use dbname as easy connect name
} else {
$easy_connect_string = '//'.$e_host.(!empty($e_port) ? ":{$e_port}" : "").'/'.$e_dbname;
}
$this->logger->debug('connect string: ' . $easy_connect_string, ['app' => 'setup.oci']);
$connection = @oci_connect($this->dbUser, $this->dbPassword, $easy_connect_string);
if(!$connection) {
$errorMessage = $this->getLastError();
if ($errorMessage) {
throw new \OC\DatabaseSetupException($this->trans->t('Oracle connection could not be established'),
$errorMessage.' Check environment: ORACLE_HOME='.getenv('ORACLE_HOME')
.' ORACLE_SID='.getenv('ORACLE_SID')
.' LD_LIBRARY_PATH='.getenv('LD_LIBRARY_PATH')
.' NLS_LANG='.getenv('NLS_LANG')
.' tnsnames.ora is '.(is_readable(getenv('ORACLE_HOME').'/network/admin/tnsnames.ora')?'':'not ').'readable');
}
throw new \OC\DatabaseSetupException($this->trans->t('Oracle username and/or password not valid'),
'Check environment: ORACLE_HOME='.getenv('ORACLE_HOME')
.' ORACLE_SID='.getenv('ORACLE_SID')
.' LD_LIBRARY_PATH='.getenv('LD_LIBRARY_PATH')
.' NLS_LANG='.getenv('NLS_LANG')
.' tnsnames.ora is '.(is_readable(getenv('ORACLE_HOME').'/network/admin/tnsnames.ora')?'':'not ').'readable');
}
//check for roles creation rights in oracle
$query='SELECT count(*) FROM user_role_privs, role_sys_privs'
." WHERE user_role_privs.granted_role = role_sys_privs.role AND privilege = 'CREATE ROLE'";
$stmt = oci_parse($connection, $query);
if (!$stmt) {
$entry = $this->trans->t('DB Error: "%s"', array($this->getLastError($connection))) . '<br />';
$entry .= $this->trans->t('Offending command was: "%s"', array($query)) . '<br />';
$this->logger->warning($entry, ['app' => 'setup.oci']);
}
$result = oci_execute($stmt);
if($result) {
$row = oci_fetch_row($stmt);
if ($row[0] > 0) {
//use the admin login data for the new database user
//add prefix to the oracle user name to prevent collisions
$this->dbUser='oc_'.$username;
//create a new password so we don't need to store the admin config in the config file
$this->dbPassword = \OC::$server->getSecureRandom()->generate(30, \OCP\Security\ISecureRandom::CHAR_LOWER.\OCP\Security\ISecureRandom::CHAR_DIGITS);
//oracle passwords are treated as identifiers:
// must start with alphanumeric char
// needs to be shortened to 30 bytes, as the two " needed to escape the identifier count towards the identifier length.
$this->dbPassword=substr($this->dbPassword, 0, 30);
$this->createDBUser($connection);
}
}
$this->config->setSystemValues([
'dbuser' => $this->dbUser,
'dbname' => $this->dbName,
'dbpassword' => $this->dbPassword,
]);
//create the database not necessary, oracle implies user = schema
//$this->createDatabase($this->dbname, $this->dbuser, $connection);
//FIXME check tablespace exists: select * from user_tablespaces
// the connection to dbname=oracle is not needed anymore
oci_close($connection);
// connect to the oracle database (schema=$this->dbuser) an check if the schema needs to be filled
$this->dbUser = $this->config->getSystemValue('dbuser');
//$this->dbname = \OC_Config::getValue('dbname');
$this->dbPassword = $this->config->getSystemValue('dbpassword');
$e_host = addslashes($this->dbHost);
$e_dbname = addslashes($this->dbName);
if ($e_host == '') {
$easy_connect_string = $e_dbname; // use dbname as easy connect name
} else {
$easy_connect_string = '//'.$e_host.'/'.$e_dbname;
}
$connection = @oci_connect($this->dbUser, $this->dbPassword, $easy_connect_string);
if(!$connection) {
throw new \OC\DatabaseSetupException($this->trans->t('Oracle username and/or password not valid'),
$this->trans->t('You need to enter either an existing account or the administrator.'));
}
$query = "SELECT count(*) FROM user_tables WHERE table_name = :un";
$stmt = oci_parse($connection, $query);
$un = $this->tablePrefix.'users';
oci_bind_by_name($stmt, ':un', $un);
if (!$stmt) {
$entry = $this->trans->t('DB Error: "%s"', array($this->getLastError($connection))) . '<br />';
$entry .= $this->trans->t('Offending command was: "%s"', array($query)) . '<br />';
$this->logger->warning( $entry, ['app' => 'setup.oci']);
}
$result = oci_execute($stmt);
if($result) {
$row = oci_fetch_row($stmt);
}
if(!$result or $row[0]==0) {
\OC_DB::createDbFromStructure($this->dbDefinitionFile);
}
}
/**
* @param resource $connection
*/
private function createDBUser($connection) {
$name = $this->dbUser;
$password = $this->dbPassword;
$query = "SELECT * FROM all_users WHERE USERNAME = :un";
$stmt = oci_parse($connection, $query);
if (!$stmt) {
$entry = $this->trans->t('DB Error: "%s"', array($this->getLastError($connection))) . '<br />';
$entry .= $this->trans->t('Offending command was: "%s"', array($query)) . '<br />';
$this->logger->warning($entry, ['app' => 'setup.oci']);
}
oci_bind_by_name($stmt, ':un', $name);
$result = oci_execute($stmt);
if(!$result) {
$entry = $this->trans->t('DB Error: "%s"', array($this->getLastError($connection))) . '<br />';
$entry .= $this->trans->t('Offending command was: "%s"', array($query)) . '<br />';
$this->logger->warning($entry, ['app' => 'setup.oci']);
}
if(! oci_fetch_row($stmt)) {
//user does not exists let's create it :)
//password must start with alphabetic character in oracle
$query = 'CREATE USER '.$name.' IDENTIFIED BY "'.$password.'" DEFAULT TABLESPACE '.$this->dbtablespace;
$stmt = oci_parse($connection, $query);
if (!$stmt) {
$entry = $this->trans->t('DB Error: "%s"', array($this->getLastError($connection))) . '<br />';
$entry .= $this->trans->t('Offending command was: "%s"', array($query)) . '<br />';
$this->logger->warning($entry, ['app' => 'setup.oci']);
}
//oci_bind_by_name($stmt, ':un', $name);
$result = oci_execute($stmt);
if(!$result) {
$entry = $this->trans->t('DB Error: "%s"', array($this->getLastError($connection))) . '<br />';
$entry .= $this->trans->t('Offending command was: "%s", name: %s, password: %s',
array($query, $name, $password)) . '<br />';
$this->logger->warning($entry, ['app' => 'setup.oci']);
}
} else { // change password of the existing role
$query = "ALTER USER :un IDENTIFIED BY :pw";
$stmt = oci_parse($connection, $query);
if (!$stmt) {
$entry = $this->trans->t('DB Error: "%s"', array($this->getLastError($connection))) . '<br />';
$entry .= $this->trans->t('Offending command was: "%s"', array($query)) . '<br />';
$this->logger->warning($entry, ['app' => 'setup.oci']);
}
oci_bind_by_name($stmt, ':un', $name);
oci_bind_by_name($stmt, ':pw', $password);
$result = oci_execute($stmt);
if(!$result) {
$entry = $this->trans->t('DB Error: "%s"', array($this->getLastError($connection))) . '<br />';
$entry .= $this->trans->t('Offending command was: "%s"', array($query)) . '<br />';
$this->logger->warning($entry, ['app' => 'setup.oci']);
}
}
// grant necessary roles
$query = 'GRANT CREATE SESSION, CREATE TABLE, CREATE SEQUENCE, CREATE TRIGGER, UNLIMITED TABLESPACE TO '.$name;
$stmt = oci_parse($connection, $query);
if (!$stmt) {
$entry = $this->trans->t('DB Error: "%s"', array($this->getLastError($connection))) . '<br />';
$entry .= $this->trans->t('Offending command was: "%s"', array($query)) . '<br />';
$this->logger->warning($entry, ['app' => 'setup.oci']);
}
$result = oci_execute($stmt);
if(!$result) {
$entry = $this->trans->t('DB Error: "%s"', array($this->getLastError($connection))) . '<br />';
$entry .= $this->trans->t('Offending command was: "%s", name: %s, password: %s',
array($query, $name, $password)) . '<br />';
$this->logger->warning($entry, ['app' => 'setup.oci']);
}
}
/**
* @param resource $connection
* @return string
*/
protected function getLastError($connection = null) {
if ($connection) {
$error = oci_error($connection);
} else {
$error = oci_error();
}
foreach (array('message', 'code') as $key) {
if (isset($error[$key])) {
return $error[$key];
}
}
return '';
}
}
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