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756 lines
19 KiB
PHP
756 lines
19 KiB
PHP
<?php
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// Copyright (C) 2010-2014 Combodo SARL
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//
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// This file is part of iTop.
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//
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// iTop 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 as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// iTop 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
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// along with iTop. If not, see <http://www.gnu.org/licenses/>
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/**
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* DB Server abstraction
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*
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* @copyright Copyright (C) 2010-2012 Combodo SARL
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* @license http://opensource.org/licenses/AGPL-3.0
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*/
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require_once('MyHelpers.class.inc.php');
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require_once(APPROOT.'core/kpi.class.inc.php');
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class MySQLException extends CoreException
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{
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public function __construct($sIssue, $aContext, $oException = null)
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{
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if ($oException != null)
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{
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$aContext['mysql_error'] = $oException->getCode();
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$aContext['mysql_errno'] = $oException->getMessage();
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}
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else
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{
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$aContext['mysql_error'] = CMDBSource::GetError();
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$aContext['mysql_errno'] = CMDBSource::GetErrNo();
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}
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parent::__construct($sIssue, $aContext);
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}
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}
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/**
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* CMDBSource
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* database access wrapper
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*
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* @package iTopORM
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*/
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class CMDBSource
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{
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protected static $m_sDBHost;
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protected static $m_sDBUser;
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protected static $m_sDBPwd;
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protected static $m_sDBName;
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protected static $m_oMysqli;
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public static function Init($sServer, $sUser, $sPwd, $sSource = '')
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{
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self::$m_sDBHost = $sServer;
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self::$m_sDBUser = $sUser;
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self::$m_sDBPwd = $sPwd;
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self::$m_sDBName = $sSource;
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self::$m_oMysqli = null;
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mysqli_report(MYSQLI_REPORT_STRICT); // *some* errors (like connection errors) will throw mysqli_sql_exception instead
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// of generating warnings printed to the output but some other errors will still
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// cause the query() method to return false !!!
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try
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{
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$aConnectInfo = explode(':', self::$m_sDBHost);
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if (count($aConnectInfo) > 1)
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{
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// Override the default port
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$sServer = $aConnectInfo[0];
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$iPort = (int)$aConnectInfo[1];
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self::$m_oMysqli = new mysqli(self::$m_sDBHost, self::$m_sDBUser, self::$m_sDBPwd, '', $iPort);
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}
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else
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{
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self::$m_oMysqli = new mysqli(self::$m_sDBHost, self::$m_sDBUser, self::$m_sDBPwd);
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}
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}
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catch(mysqli_sql_exception $e)
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{
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throw new MySQLException('Could not connect to the DB server', array('host'=>self::$m_sDBHost, 'user'=>self::$m_sDBUser), $e);
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}
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if (!empty($sSource))
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{
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try
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{
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mysqli_report(MYSQLI_REPORT_STRICT); // Errors, in the next query, will throw mysqli_sql_exception
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self::$m_oMysqli->query("USE `$sSource`");
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}
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catch(mysqli_sql_exception $e)
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{
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throw new MySQLException('Could not select DB', array('host'=>self::$m_sDBHost, 'user'=>self::$m_sDBUser, 'db_name'=>self::$m_sDBName), $e);
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}
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}
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}
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public static function SetCharacterSet($sCharset = 'utf8', $sCollation = 'utf8_general_ci')
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{
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if (strlen($sCharset) > 0)
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{
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if (strlen($sCollation) > 0)
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{
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self::Query("SET NAMES '$sCharset' COLLATE '$sCollation'");
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}
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else
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{
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self::Query("SET NAMES '$sCharset'");
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}
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}
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}
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public static function SetTimezone($sTimezone = null)
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{
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// Note: requires the installation of MySQL special tables,
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// otherwise, only 'SYSTEM' or "+10:00' may be specified which is NOT sufficient because of day light saving times
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if (!is_null($sTimezone))
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{
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$sQuotedTimezone = self::Quote($sTimezone);
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self::Query("SET time_zone = $sQuotedTimezone");
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}
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}
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public static function ListDB()
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{
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$aDBs = self::QueryToCol('SHOW DATABASES', 'Database');
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// Show Database does return the DB names in lower case
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return $aDBs;
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}
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public static function IsDB($sSource)
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{
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try
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{
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$aDBs = self::ListDB();
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foreach($aDBs as $sDBName)
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{
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// perform a case insensitive test because on Windows the table names become lowercase :-(
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if (strtolower($sDBName) == strtolower($sSource)) return true;
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}
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return false;
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}
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catch(Exception $e)
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{
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// In case we don't have rights to enumerate the databases
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// Let's try to connect directly
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return @((bool)self::$m_oMysqli->query("USE `$sSource`"));
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}
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}
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public static function GetDBVersion()
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{
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$aVersions = self::QueryToCol('SELECT Version() as version', 'version');
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return $aVersions[0];
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}
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public static function SelectDB($sSource)
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{
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if (!((bool)self::$m_oMysqli->query("USE `$sSource`")))
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{
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throw new MySQLException('Could not select DB', array('db_name'=>$sSource));
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}
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self::$m_sDBName = $sSource;
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}
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public static function CreateDB($sSource)
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{
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self::Query("CREATE DATABASE `$sSource` CHARACTER SET utf8 COLLATE utf8_unicode_ci");
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self::SelectDB($sSource);
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}
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public static function DropDB($sDBToDrop = '')
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{
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if (empty($sDBToDrop))
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{
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$sDBToDrop = self::$m_sDBName;
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}
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self::Query("DROP DATABASE `$sDBToDrop`");
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if ($sDBToDrop == self::$m_sDBName)
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{
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self::$m_sDBName = '';
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}
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}
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public static function CreateTable($sQuery)
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{
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$res = self::Query($sQuery);
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self::_TablesInfoCacheReset(); // reset the table info cache!
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return $res;
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}
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public static function DropTable($sTable)
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{
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$res = self::Query("DROP TABLE `$sTable`");
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self::_TablesInfoCacheReset(true); // reset the table info cache!
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return $res;
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}
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public static function GetErrNo()
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{
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if (self::$m_oMysqli->errno != 0)
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{
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return self::$m_oMysqli->errno;
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}
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else
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{
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return self::$m_oMysqli->connect_errno;
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}
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}
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public static function GetError()
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{
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if (self::$m_oMysqli->error != '')
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{
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return self::$m_oMysqli->error;
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}
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else
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{
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return self::$m_oMysqli->connect_error;
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}
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}
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public static function DBHost() {return self::$m_sDBHost;}
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public static function DBUser() {return self::$m_sDBUser;}
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public static function DBPwd() {return self::$m_sDBPwd;}
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public static function DBName() {return self::$m_sDBName;}
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public static function Quote($value, $bAlways = false, $cQuoteStyle = "'")
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{
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// Quote variable and protect against SQL injection attacks
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// Code found in the PHP documentation: quote_smart($value)
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// bAlways should be set to true when the purpose is to create a IN clause,
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// otherwise and if there is a mix of strings and numbers, the clause
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// would always be false
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if (is_null($value))
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{
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return 'NULL';
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}
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if (is_array($value))
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{
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$aRes = array();
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foreach ($value as $key => $itemvalue)
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{
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$aRes[$key] = self::Quote($itemvalue, $bAlways, $cQuoteStyle);
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}
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return $aRes;
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}
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// Stripslashes
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if (get_magic_quotes_gpc())
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{
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$value = stripslashes($value);
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}
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// Quote if not a number or a numeric string
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if ($bAlways || is_string($value))
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{
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$value = $cQuoteStyle . self::$m_oMysqli->real_escape_string($value) . $cQuoteStyle;
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}
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return $value;
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}
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public static function Query($sSQLQuery)
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{
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$oKPI = new ExecutionKPI();
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try
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{
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$oResult = self::$m_oMysqli->query($sSQLQuery);
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}
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catch(mysqli_sql_exception $e)
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{
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throw new MySQLException('Failed to issue SQL query', array('query' => $sSQLQuery, $e));
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}
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$oKPI->ComputeStats('Query exec (mySQL)', $sSQLQuery);
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if ($oResult === false)
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{
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throw new MySQLException('Failed to issue SQL query', array('query' => $sSQLQuery));
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}
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return $oResult;
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}
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public static function GetNextInsertId($sTable)
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{
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$sSQL = "SHOW TABLE STATUS LIKE '$sTable'";
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$oResult = self::Query($sSQL);
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$aRow = $oResult->fetch_assoc();
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$iNextInsertId = $aRow['Auto_increment'];
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return $iNextInsertId;
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}
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public static function GetInsertId()
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{
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$iRes = self::$m_oMysqli->insert_id;
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if (is_null($iRes))
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{
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return 0;
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}
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return $iRes;
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}
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public static function InsertInto($sSQLQuery)
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{
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if (self::Query($sSQLQuery))
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{
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return self::GetInsertId();
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}
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return false;
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}
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public static function DeleteFrom($sSQLQuery)
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{
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self::Query($sSQLQuery);
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}
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public static function QueryToScalar($sSql)
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{
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$oKPI = new ExecutionKPI();
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try
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{
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$oResult = self::$m_oMysqli->query($sSql);
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}
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catch(mysqli_sql_exception $e)
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{
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$oKPI->ComputeStats('Query exec (mySQL)', $sSql);
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MySQLException('Failed to issue SQL query', array('query' => $sSql, $e));
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}
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$oKPI->ComputeStats('Query exec (mySQL)', $sSql);
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if ($oResult === false)
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{
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throw new MySQLException('Failed to issue SQL query', array('query' => $sSql));
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}
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if ($aRow = $oResult->fetch_array(MYSQLI_BOTH))
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{
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$res = $aRow[0];
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}
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else
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{
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$oResult->free();
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throw new MySQLException('Found no result for query', array('query' => $sSql));
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}
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$oResult->free();
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return $res;
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}
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public static function QueryToArray($sSql)
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{
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$aData = array();
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$oKPI = new ExecutionKPI();
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try
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{
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$oResult = self::$m_oMysqli->query($sSql);
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}
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catch(mysqli_sql_exception $e)
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{
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$oKPI->ComputeStats('Query exec (mySQL)', $sSql);
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MySQLException('Failed to issue SQL query', array('query' => $sSql, $e));
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}
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$oKPI->ComputeStats('Query exec (mySQL)', $sSql);
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if ($oResult === false)
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{
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throw new MySQLException('Failed to issue SQL query', array('query' => $sSql));
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}
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while ($aRow = $oResult->fetch_array(MYSQLI_BOTH))
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{
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$aData[] = $aRow;
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}
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$oResult->free();
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return $aData;
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}
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public static function QueryToCol($sSql, $col)
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{
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$aColumn = array();
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$aData = self::QueryToArray($sSql);
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foreach($aData as $aRow)
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{
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@$aColumn[] = $aRow[$col];
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}
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return $aColumn;
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}
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public static function ExplainQuery($sSql)
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{
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$aData = array();
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try
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{
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$oResult = self::$m_oMysqli->query($sSql);
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}
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catch(mysqli_sql_exception $e)
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{
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MySQLException('Failed to issue SQL query', array('query' => $sSql, $e));
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}
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if ($oResult === false)
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{
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throw new MySQLException('Failed to issue SQL query', array('query' => $sSql));
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}
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$aNames = self::GetColumns($oResult);
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$aData[] = $aNames;
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while ($aRow = $oResult->fetch_array(MYSQLI_ASSOC))
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{
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$aData[] = $aRow;
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}
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$oResult->free();
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return $aData;
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}
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public static function TestQuery($sSql)
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{
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try
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{
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$oResult = self::$m_oMysqli->query($sSql);
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}
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catch(mysqli_sql_exception $e)
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{
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MySQLException('Failed to issue SQL query', array('query' => $sSql, $e));
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}
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if ($oResult === false)
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{
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throw new MySQLException('Failed to issue SQL query', array('query' => $sSql));
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}
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if (is_object($oResult))
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{
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$oResult->free();
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}
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return '';
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}
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public static function NbRows($oResult)
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{
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return $oResult->num_rows;
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}
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public static function AffectedRows()
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{
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return self::$m_oMysqli->affected_rows;
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}
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public static function FetchArray($oResult)
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{
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return $oResult->fetch_array(MYSQLI_ASSOC);
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}
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public static function GetColumns($oResult)
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{
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$aNames = array();
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for ($i = 0; $i < (($___mysqli_tmp = $oResult->num_fields) ? $___mysqli_tmp : 0) ; $i++)
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{
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$meta = $oResult->fetch_field_direct($i);
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if (!$meta)
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{
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throw new MySQLException('mysql_fetch_field: No information available', array('query'=>$sSql, 'i'=>$i));
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}
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else
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{
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$aNames[] = $meta->name;
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}
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}
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return $aNames;
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}
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public static function Seek($oResult, $iRow)
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{
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return $oResult->data_seek($iRow);
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}
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public static function FreeResult($oResult)
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{
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$oResult->free(); /* returns void */
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return true;
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}
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public static function IsTable($sTable)
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{
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$aTableInfo = self::GetTableInfo($sTable);
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return (!empty($aTableInfo));
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}
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public static function IsKey($sTable, $iKey)
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{
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$aTableInfo = self::GetTableInfo($sTable);
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if (empty($aTableInfo)) return false;
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if (!array_key_exists($iKey, $aTableInfo["Fields"])) return false;
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$aFieldData = $aTableInfo["Fields"][$iKey];
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if (!array_key_exists("Key", $aFieldData)) return false;
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return ($aFieldData["Key"] == "PRI");
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}
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public static function IsAutoIncrement($sTable, $sField)
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{
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$aTableInfo = self::GetTableInfo($sTable);
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if (empty($aTableInfo)) return false;
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if (!array_key_exists($sField, $aTableInfo["Fields"])) return false;
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$aFieldData = $aTableInfo["Fields"][$sField];
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if (!array_key_exists("Extra", $aFieldData)) return false;
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//MyHelpers::debug_breakpoint($aFieldData);
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return (strstr($aFieldData["Extra"], "auto_increment"));
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}
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public static function IsField($sTable, $sField)
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{
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$aTableInfo = self::GetTableInfo($sTable);
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if (empty($aTableInfo)) return false;
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if (!array_key_exists($sField, $aTableInfo["Fields"])) return false;
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return true;
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}
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public static function IsNullAllowed($sTable, $sField)
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{
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$aTableInfo = self::GetTableInfo($sTable);
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if (empty($aTableInfo)) return false;
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if (!array_key_exists($sField, $aTableInfo["Fields"])) return false;
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$aFieldData = $aTableInfo["Fields"][$sField];
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return (strtolower($aFieldData["Null"]) == "yes");
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}
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public static function GetFieldType($sTable, $sField)
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{
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$aTableInfo = self::GetTableInfo($sTable);
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if (empty($aTableInfo)) return false;
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if (!array_key_exists($sField, $aTableInfo["Fields"])) return false;
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$aFieldData = $aTableInfo["Fields"][$sField];
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return ($aFieldData["Type"]);
|
|
}
|
|
|
|
public static function HasIndex($sTable, $sIndexId, $aFields = null)
|
|
{
|
|
$aTableInfo = self::GetTableInfo($sTable);
|
|
if (empty($aTableInfo)) return false;
|
|
if (!array_key_exists($sIndexId, $aTableInfo['Indexes'])) return false;
|
|
|
|
if ($aFields == null)
|
|
{
|
|
// Just searching for the name
|
|
return true;
|
|
}
|
|
|
|
// Compare the columns
|
|
$sSearchedIndex = implode(',', $aFields);
|
|
$sExistingIndex = implode(',', $aTableInfo['Indexes'][$sIndexId]);
|
|
|
|
return ($sSearchedIndex == $sExistingIndex);
|
|
}
|
|
|
|
// Returns an array of (fieldname => array of field info)
|
|
public static function GetTableFieldsList($sTable)
|
|
{
|
|
assert(!empty($sTable));
|
|
|
|
$aTableInfo = self::GetTableInfo($sTable);
|
|
if (empty($aTableInfo)) return array(); // #@# or an error ?
|
|
|
|
return array_keys($aTableInfo["Fields"]);
|
|
}
|
|
|
|
// Cache the information about existing tables, and their fields
|
|
private static $m_aTablesInfo = array();
|
|
private static function _TablesInfoCacheReset()
|
|
{
|
|
self::$m_aTablesInfo = array();
|
|
}
|
|
private static function _TableInfoCacheInit($sTableName)
|
|
{
|
|
if (isset(self::$m_aTablesInfo[strtolower($sTableName)])
|
|
&& (self::$m_aTablesInfo[strtolower($sTableName)] != null)) return;
|
|
|
|
try
|
|
{
|
|
// Check if the table exists
|
|
$aFields = self::QueryToArray("SHOW COLUMNS FROM `$sTableName`");
|
|
// Note: without backticks, you get an error with some table names (e.g. "group")
|
|
foreach ($aFields as $aFieldData)
|
|
{
|
|
$sFieldName = $aFieldData["Field"];
|
|
self::$m_aTablesInfo[strtolower($sTableName)]["Fields"][$sFieldName] =
|
|
array
|
|
(
|
|
"Name"=>$aFieldData["Field"],
|
|
"Type"=>$aFieldData["Type"],
|
|
"Null"=>$aFieldData["Null"],
|
|
"Key"=>$aFieldData["Key"],
|
|
"Default"=>$aFieldData["Default"],
|
|
"Extra"=>$aFieldData["Extra"]
|
|
);
|
|
}
|
|
}
|
|
catch(MySQLException $e)
|
|
{
|
|
// Table does not exist
|
|
self::$m_aTablesInfo[strtolower($sTableName)] = null;
|
|
}
|
|
|
|
if (!is_null(self::$m_aTablesInfo[strtolower($sTableName)]))
|
|
{
|
|
$aIndexes = self::QueryToArray("SHOW INDEXES FROM `$sTableName`");
|
|
$aMyIndexes = array();
|
|
foreach ($aIndexes as $aIndexColumn)
|
|
{
|
|
$aMyIndexes[$aIndexColumn['Key_name']][$aIndexColumn['Seq_in_index']-1] = $aIndexColumn['Column_name'];
|
|
}
|
|
self::$m_aTablesInfo[strtolower($sTableName)]["Indexes"] = $aMyIndexes;
|
|
}
|
|
}
|
|
//public static function EnumTables()
|
|
//{
|
|
// self::_TablesInfoCacheInit();
|
|
// return array_keys(self::$m_aTablesInfo);
|
|
//}
|
|
public static function GetTableInfo($sTable)
|
|
{
|
|
self::_TableInfoCacheInit($sTable);
|
|
|
|
// perform a case insensitive match because on Windows the table names become lowercase :-(
|
|
//foreach(self::$m_aTablesInfo as $sTableName => $aInfo)
|
|
//{
|
|
// if (strtolower($sTableName) == strtolower($sTable))
|
|
// {
|
|
// return $aInfo;
|
|
// }
|
|
//}
|
|
return self::$m_aTablesInfo[strtolower($sTable)];
|
|
//return null;
|
|
}
|
|
|
|
public static function DumpTable($sTable)
|
|
{
|
|
$sSql = "SELECT * FROM `$sTable`";
|
|
try
|
|
{
|
|
$oResult = self::$m_oMysqli->query($sSql);
|
|
}
|
|
catch(mysqli_sql_exception $e)
|
|
{
|
|
throw new MySQLException('Failed to issue SQL query', array('query' => $sSql), $e);
|
|
}
|
|
if ($oResult === false)
|
|
{
|
|
throw new MySQLException('Failed to issue SQL query', array('query' => $sSql));
|
|
}
|
|
|
|
$aRows = array();
|
|
while ($aRow = $oResult->fetch_array(MYSQLI_ASSOC))
|
|
{
|
|
$aRows[] = $aRow;
|
|
}
|
|
$oResult->free();
|
|
return $aRows;
|
|
}
|
|
|
|
/**
|
|
* Returns the value of the specified server variable
|
|
* @param string $sVarName Name of the server variable
|
|
* @return mixed Current value of the variable
|
|
*/
|
|
public static function GetServerVariable($sVarName)
|
|
{
|
|
$result = '';
|
|
$sSql = "SELECT @@$sVarName as theVar";
|
|
$aRows = self::QueryToArray($sSql);
|
|
if (count($aRows) > 0)
|
|
{
|
|
$result = $aRows[0]['theVar'];
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the privileges of the current user
|
|
* @return string privileges in a raw format
|
|
*/
|
|
public static function GetRawPrivileges()
|
|
{
|
|
try
|
|
{
|
|
$oResult = self::Query('SHOW GRANTS'); // [ FOR CURRENT_USER()]
|
|
}
|
|
catch(MySQLException $e)
|
|
{
|
|
return "Current user not allowed to see his own privileges (could not access to the database 'mysql' - $iCode)";
|
|
}
|
|
|
|
$aRes = array();
|
|
while ($aRow = $oResult->fetch_array(MYSQLI_NUM))
|
|
{
|
|
// so far, only one column...
|
|
$aRes[] = implode('/', $aRow);
|
|
}
|
|
$oResult->free();
|
|
// so far, only one line...
|
|
return implode(', ', $aRes);
|
|
}
|
|
|
|
/**
|
|
* Determine the slave status of the server
|
|
* @return bool true if the server is slave
|
|
*/
|
|
public static function IsSlaveServer()
|
|
{
|
|
try
|
|
{
|
|
$oResult = self::Query('SHOW SLAVE STATUS');
|
|
}
|
|
catch(MySQLException $e)
|
|
{
|
|
throw new CoreException("Current user not allowed to check the status", array('mysql_error' => $e->getMessage()));
|
|
}
|
|
|
|
if ($oResult->num_rows == 0)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// Returns one single row anytime
|
|
$aRow = $oResult->fetch_array(MYSQLI_ASSOC);
|
|
$oResult->free();
|
|
|
|
if (!isset($aRow['Slave_IO_Running']))
|
|
{
|
|
return false;
|
|
}
|
|
if (!isset($aRow['Slave_SQL_Running']))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// If at least one slave thread is running, then we consider that the slave is enabled
|
|
if ($aRow['Slave_IO_Running'] == 'Yes')
|
|
{
|
|
return true;
|
|
}
|
|
if ($aRow['Slave_SQL_Running'] == 'Yes')
|
|
{
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
} |