mirror of
https://github.com/EGroupware/egroupware.git
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330 lines
10 KiB
PHP
330 lines
10 KiB
PHP
<?php
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/**
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* eGgroupWare setup - test or create the database
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*
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* @link http://www.egroupware.org
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* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @package setup
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* @copyright (c) 2007-16 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @version $Id$
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*/
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use EGroupware\Api;
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/**
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* setup command: test or create the database
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*/
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class setup_cmd_database extends setup_cmd
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{
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/**
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* Allow to run this command via setup-cli
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*/
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const SETUP_CLI_CALLABLE = true;
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/**
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* Maximum length of database name (at least for MySQL this is the limit)
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*
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* @var int
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*/
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const MAX_DB_NAME_LEN = 16;
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/**
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* Instance of Api\Db to connect or create the db
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*
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* @var Api\Db
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*/
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private $test_db;
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/**
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* Constructor
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*
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* @param string/array $domain domain-name to customize the defaults or array with all parameters
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* @param string $db_type db-type (mysql, pgsql, ...)
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* @param string $db_host =null
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* @param string $db_port =null
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* @param string $db_name =null
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* @param string $db_user =null
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* @param string $db_pass =null
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* @param string $db_root =null
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* @param string $db_root_pw =null
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* @param string $sub_command ='create_db' 'create_db', 'test_db', 'test_db_root'
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* @param string $db_grant_host ='localhost' host/ip of webserver for grant
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* @param boolean $make_db_name_unique =false true: if create fails because db exists,
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* try creating a unique name by shortening the name and adding a number to it
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*/
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function __construct($domain,$db_type=null,$db_host=null,$db_port=null,$db_name=null,$db_user=null,$db_pass=null,
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$db_root=null,$db_root_pw=null,$sub_command='create_db',$db_grant_host='localhost',$make_db_name_unique=false)
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{
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if (!is_array($domain))
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{
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$data = array(
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'domain' => $domain,
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'db_type' => $db_type,
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'db_host' => $db_host,
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'db_port' => $db_port,
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'db_name' => $db_name,
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'db_user' => $db_user,
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'db_pass' => $db_pass,
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'db_root' => $db_root,
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'db_root_pw' => $db_root_pw,
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'sub_command' => $sub_command,
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'db_grant_host' => $db_grant_host,
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'make_db_name_unique' => $make_db_name_unique,
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);
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}
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else
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{
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$data = $domain;
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}
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// need to incorporate correct defaults for given database type
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admin_cmd::__construct(array_merge(self::defaults($data['db_type']), array_diff($data, array(null))));
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}
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/**
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* run the command: test or create database
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*
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* @param boolean $check_only =false only run the checks (and throw the exceptions), but not the command itself
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* @return string success message
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* @throws Exception(lang('Wrong credentials to access the header.inc.php file!'),2);
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* @throws Exception('header.inc.php not found!');
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*/
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protected function exec($check_only=false)
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{
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if (!empty($this->domain) && !preg_match('/^([a-z0-9_-]+\.)*[a-z0-9]+/i',$this->domain))
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{
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throw new Api\Exception\WrongUserinput(lang("'%1' is no valid domain name!",$this->domain));
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}
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if ($this->remote_id && $check_only) return true; // further checks can only done locally
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$this->_merge_defaults();
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//_debug_array($this->as_array());
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try {
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switch($this->sub_command)
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{
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case 'test_db_root':
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$msg = $this->connect($this->db_root,$this->db_root_pw,$this->db_meta);
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break;
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case 'test_db':
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$msg = $this->connect();
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break;
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case 'drop':
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$msg = $this->drop();
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break;
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case 'create_db':
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default:
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$msg = $this->create();
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break;
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}
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}
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catch (Exception $e) {
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// we catch the exception to properly restore the db
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}
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$this->restore_db();
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if ($e)
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{
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throw $e;
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}
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return $msg;
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}
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/**
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* Connect to database
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*
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* @param string $user =null default $this->db_user
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* @param string $pass =null default $this->db_pass
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* @param string $name =null default $this->db_name
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* @throws Api\Exception\WrongUserinput Can not connect to database ...
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*/
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private function connect($user=null,$pass=null,$name=null)
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{
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if (is_null($user)) $user = $this->db_user;
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if (is_null($pass)) $pass = $this->db_pass;
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if (is_null($name)) $name = $this->db_name;
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$this->test_db = new Api\Db();
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$error_rep = error_reporting();
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error_reporting($error_rep & ~E_WARNING); // switch warnings of, in case they are on
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try {
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$this->test_db->connect($name,$this->db_host,$this->db_port,$user,$pass,$this->db_type);
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}
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catch (Exception $e) {
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// just give a nicer error, after switching error_reporting on again
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}
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error_reporting($error_rep);
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if ($e)
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{
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throw new Api\Exception\WrongUserinput(lang('Can not connect to %1 database %2 on host %3 using user %4!',
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$this->db_type,$name,$this->db_host.($this->db_port?':'.$this->db_port:''),$user).' ('.$e->getMessage().')');
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}
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return lang('Successful connected to %1 database %2 on %3 using user %4.',
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$this->db_type,$name,$this->db_host.($this->db_port?':'.$this->db_port:''),$user);
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}
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/**
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* Check and if does not yet exist create the new database and user
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*
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* The check will fail if the database exists, but already contains tables
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*
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* if $this->make_db_name_unique is set, a decrementing nummeric prefix gets
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* added to $this->db_name AND $this->db_user, if db already exists.
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*
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* @return string with success message
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* @throws Api\Exception\WrongUserinput
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*/
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private function create()
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{
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static $try_make_unique = 0; // to limit trials to create a unique name
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// shorten db-name/-user to self::MAX_DB_NAME_LEN chars
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if ($this->make_db_name_unique && strlen($this->db_name) > self::MAX_DB_NAME_LEN)
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{
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$this->set_defaults['db_name'] = $this->db_name =
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$this->set_defaults['db_user'] = $this->db_user = // change user too (otherwise existing user/db could not connect any more!)
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substr(str_replace(array('.', '-'), '_', $this->db_name),0,self::MAX_DB_NAME_LEN);
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}
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try {
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$msg = $this->connect();
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}
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catch (Api\Exception\WrongUserinput $e) {
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// db or user not working --> connect as root and create it
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try {
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$this->test_db->create_database($this->db_root,$this->db_root_pw,$this->db_charset,$this->db_grant_host);
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$this->connect();
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}
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catch(Api\Db\Exception $e) { // catches failed to create database
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// try connect as root to check if wrong root/root_pw is the problem
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$this->connect($this->db_root,$this->db_root_pw,$this->db_meta);
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// if we should create a db with a unique name (try it only N times, not endless!)
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if ($this->make_db_name_unique && $try_make_unique++ < 20)
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{
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// check if we can connect as root to the db to create --> db exists already
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try {
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$this->connect($this->db_root,$this->db_root_pw);
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// create new db_name by incrementing an existing numeric postfix
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$matches = null;
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if (preg_match('/([0-9]+)$/',$this->db_name,$matches))
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{
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$num = (string)(++$matches[1]);
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}
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else // or adding one starting with 2
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{
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$num = '2';
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}
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$this->set_defaults['db_name'] = $this->db_name =
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$this->set_defaults['db_user'] = $this->db_user = // change user too (otherwise existing user/db could not connect any more!)
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substr($this->db_name,0,self::MAX_DB_NAME_LEN-strlen($num)).$num;
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return $this->create();
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}
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catch (Api\Exception\WrongUserinput $e2)
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{
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// we can NOT connect to db as root --> ignore exception to give general error
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}
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}
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// if not give general error
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throw new Api\Exception\WrongUserinput(lang('Can not create %1 database %2 on %3 for user %4!',
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$this->db_type,$this->db_name,$this->db_host.($this->db_port?':'.$this->db_port:''),$this->db_user));
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}
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$msg = lang('Successful connected to %1 on %3 and created database %2 for user %4.',
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$this->db_type,$this->db_name,$this->db_host.($this->db_port?':'.$this->db_port:''),$this->db_user);
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}
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// check if it already contains tables
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if (($tables = $this->test_db->table_names()))
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{
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foreach($tables as &$table)
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{
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$table = $table['table_name'];
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}
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throw new Api\Exception\WrongUserinput(lang('%1 database %2 on %3 already contains the following tables:',
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$this->db_type,$this->db_name,$this->db_host.($this->db_port?':'.$this->db_port:'')).' '.
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implode(', ',$tables));
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}
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return $msg;
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}
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/**
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* Drop database and user
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*
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* @return string with success message
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* @throws Api\Exception\WrongUserinput
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* @throws Api\Db\Exception if database not exist
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*/
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private function drop()
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{
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$this->connect($this->db_root,$this->db_root_pw,$this->db_meta);
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$this->test_db->query('DROP DATABASE '.$this->test_db->name_quote($this->db_name),__LINE__,__FILE__);
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$msg = lang('Datebase %1 droped.',$this->db_name);
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try {
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$this->test_db->query('DROP USER '.$this->test_db->quote($this->db_user).'@'.
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$this->test_db->quote($this->db_grant_host?$this->db_grant_host:'%'),__LINE__,__FILE__);
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}
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catch (Api\Db\Exception $e) {
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unset($e);
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// we make this no fatal error, as the granthost might be something else ...
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$msg .= ' '.lang('Error dropping User!');
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}
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return $msg;
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}
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/**
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* Return default database settings for a given domain
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*
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* @param string $db_type ='mysqli'
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* @return array
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*/
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static function defaults($db_type='mysqli')
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{
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switch($db_type)
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{
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case 'mysql':
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default:
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$db_type = $meta_db = 'mysql';
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break;
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case 'pgsql':
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$meta_db = 'template1';
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break;
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}
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return array(
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'db_type' => $db_type,
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'db_host' => 'localhost',
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'db_port' => 3306,
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'db_name' => 'egw_$domain',
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'db_user' => 'egw_$domain',
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'db_pass' => self::randomstring(),
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'db_root' => 'root',
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'db_root_pw' => '', // not really a default
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'db_meta' => $meta_db,
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'db_charset' => 'utf-8',
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'db_grant_host' => 'localhost',
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);
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}
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/**
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* Merges the default into the current properties, if they are empty or contain placeholders
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*/
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private function _merge_defaults()
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{
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foreach(self::defaults() as $name => $default)
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{
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if (!$this->$name)
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{
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//echo "<p>setting $name='{$this->$name}' to it's default='$default'</p>\n";
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$this->set_defaults[$name] = $this->$name = $default;
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}
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if (strpos($this->$name,'$domain') !== false)
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{
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// limit names to 16 chars (16 char is user-name limit in MySQL)
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$this->set_defaults[$name] = $this->$name =
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substr(str_replace(array('$domain','.','-'),array($this->domain,'_','_'),$this->$name),
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0,self::MAX_DB_NAME_LEN);
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}
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}
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}
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}
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