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e463bd8b48
Some changes to the application layout: logs now go to the ./log folder ./data should be used to store application's data. SVN:trunk[2189]
652 lines
17 KiB
PHP
652 lines
17 KiB
PHP
<?php
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// Copyright (C) 2010 Combodo SARL
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; version 3 of the License.
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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 General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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/**
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* DB Server abstraction
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*
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* @author Erwan Taloc <erwan.taloc@combodo.com>
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* @author Romain Quetiez <romain.quetiez@combodo.com>
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* @author Denis Flaven <denis.flaven@combodo.com>
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* @license http://www.opensource.org/licenses/gpl-3.0.html LGPL
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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, $aContext)
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{
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$aContext['mysql_error'] = CMDBSource::GetError();
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$aContext['mysql_errno'] = CMDBSource::GetErrNo();;
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parent::__construct($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 $m_resDBLink;
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public static function Init($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 = $sSource;
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if (!self::$m_resDBLink = @mysqli_connect($sServer, $sUser, $sPwd))
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{
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throw new MySQLException('Could not connect to the DB server', array('host'=>$sServer, 'user'=>$sUser));
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}
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if (!empty($sSource))
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{
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if (!((bool)mysqli_query(self::$m_resDBLink, "USE $sSource")))
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{
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throw new MySQLException('Could not select DB', array('host'=>$sServer, 'user'=>$sUser, 'db_name'=>$sSource));
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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 $e)
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{
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// In case we don't have rights to enumerate the databases
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// Let's try to connect directly
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return @((bool)mysqli_query(self::$m_resDBLink, "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)mysqli_query(self::$m_resDBLink, "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_resDBLink)
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{
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return mysqli_errno(self::$m_resDBLink);
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}
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else
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{
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return mysqli_connect_errno();
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}
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}
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public static function GetError()
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{
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if (self::$m_resDBLink)
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{
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return mysqli_error(self::$m_resDBLink);
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}
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else
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{
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return mysqli_connect_error();
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}
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}
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public static function DBHost() {return self::$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 = $cQuoteStyle . mysqli_real_escape_string(self::$m_resDBLink, $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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// Add info into the query as a comment, for easier error tracking
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// disabled until we need it really!
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//
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//$aTraceInf['file'] = __FILE__;
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// $sSQLQuery .= MyHelpers::MakeSQLComment($aTraceInf);
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$oKPI = new ExecutionKPI();
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$result = mysqli_query(self::$m_resDBLink, $sSQLQuery);
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if (!$result)
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{
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throw new MySQLException('Failed to issue SQL query', array('query' => $sSQLQuery));
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}
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$oKPI->ComputeStats('Query exec (mySQL)', $sSQLQuery);
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return $result;
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}
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public static function GetNextInsertId($sTable)
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{
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$sSQL = "SHOW TABLE STATUS LIKE '$sTable'";
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$result = self::Query($sSQL);
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$aRow = mysqli_fetch_assoc($result);
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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 = mysqli_insert_id(self::$m_resDBLink);
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if (is_null($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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$result = mysqli_query(self::$m_resDBLink, $sSql);
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if (!$result)
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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 = mysqli_fetch_array($result, MYSQLI_BOTH))
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{
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$res = $aRow[0];
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}
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else
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{
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mysqli_free_result($result);
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throw new MySQLException('Found no result for query', array('query' => $sSql));
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}
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mysqli_free_result($result);
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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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$aData = array();
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$result = mysqli_query(self::$m_resDBLink, $sSql);
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if (!$result)
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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 = mysqli_fetch_array($result, MYSQLI_BOTH))
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{
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$aData[] = $aRow;
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}
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mysqli_free_result($result);
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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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$aData = array();
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$result = mysqli_query(self::$m_resDBLink, "EXPLAIN $sSql");
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if (!$result)
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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($result);
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$aData[] = $aNames;
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while ($aRow = mysqli_fetch_array($result, MYSQLI_ASSOC))
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{
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$aData[] = $aRow;
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}
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mysqli_free_result($result);
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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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$result = mysqli_query(self::$m_resDBLink, "EXPLAIN $sSql");
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if (!$result)
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{
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return self::GetError();
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}
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mysqli_free_result($result);
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return '';
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}
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public static function NbRows($result)
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{
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return mysqli_num_rows($result);
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}
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public static function FetchArray($result)
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{
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return mysqli_fetch_array($result, MYSQLI_ASSOC);
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}
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public static function GetColumns($result)
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{
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$aNames = array();
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for ($i = 0; $i < (($___mysqli_tmp = mysqli_num_fields($result)) ? $___mysqli_tmp : 0) ; $i++)
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{
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$meta = mysqli_fetch_field_direct($result, $i);
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if (!$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 $aNames;
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}
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public static function Seek($result, $iRow)
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{
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return mysqli_data_seek($result, $iRow);
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}
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public static function FreeResult($result)
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{
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return ((mysqli_free_result($result) || (is_object($result) && (get_class($result) == "mysqli_result"))) ? true : false);
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}
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public static function IsTable($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 ($aFieldData["Type"]);
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}
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public static function HasIndex($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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// $aFieldData could be 'PRI' for the primary key, or 'MUL', or ?
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return (strlen($aFieldData["Key"]) > 0);
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}
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// Returns an array of (fieldname => array of field info)
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public static function GetTableFieldsList($sTable)
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{
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assert(!empty($sTable));
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$aTableInfo = self::GetTableInfo($sTable);
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if (empty($aTableInfo)) return array(); // #@# or an error ?
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return array_keys($aTableInfo["Fields"]);
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}
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// Cache the information about existing tables, and their fields
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private static $m_aTablesInfo = array();
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private static function _TablesInfoCacheReset()
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{
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self::$m_aTablesInfo = array();
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}
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private static function _TableInfoCacheInit($sTableName)
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{
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if (isset(self::$m_aTablesInfo[strtolower($sTableName)])
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&& (self::$m_aTablesInfo[strtolower($sTableName)] != null)) return;
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try
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{
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// Check if the table exists
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$aFields = self::QueryToArray("SHOW COLUMNS FROM `$sTableName`");
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// Note: without backticks, you get an error with some table names (e.g. "group")
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foreach ($aFields as $aFieldData)
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{
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$sFieldName = $aFieldData["Field"];
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self::$m_aTablesInfo[strtolower($sTableName)]["Fields"][$sFieldName] =
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array
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(
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"Name"=>$aFieldData["Field"],
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"Type"=>$aFieldData["Type"],
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"Null"=>$aFieldData["Null"],
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"Key"=>$aFieldData["Key"],
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"Default"=>$aFieldData["Default"],
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"Extra"=>$aFieldData["Extra"]
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);
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}
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}
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catch(MySQLException $e)
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{
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// Table does not exist
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self::$m_aTablesInfo[strtolower($sTableName)] = null;
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}
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}
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//public static function EnumTables()
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//{
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// self::_TablesInfoCacheInit();
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// return array_keys(self::$m_aTablesInfo);
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//}
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public static function GetTableInfo($sTable)
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{
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self::_TableInfoCacheInit($sTable);
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// perform a case insensitive match because on Windows the table names become lowercase :-(
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//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`";
|
|
$result = mysqli_query(self::$m_resDBLink, $sSql);
|
|
if (!$result)
|
|
{
|
|
throw new MySQLException('Failed to issue SQL query', array('query' => $sSql));
|
|
}
|
|
|
|
$aRows = array();
|
|
while ($aRow = mysqli_fetch_array($result, MYSQLI_ASSOC))
|
|
{
|
|
$aRows[] = $aRow;
|
|
}
|
|
mysqli_free_result($result);
|
|
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
|
|
{
|
|
$result = 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 = mysqli_fetch_array($result, MYSQLI_NUM))
|
|
{
|
|
// so far, only one column...
|
|
$aRes[] = implode('/', $aRow);
|
|
}
|
|
mysqli_free_result($result);
|
|
// 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
|
|
{
|
|
$result = self::Query('SHOW SLAVE STATUS');
|
|
}
|
|
catch(MySQLException $e)
|
|
{
|
|
throw new CoreException("Current user not allowed to check the status", array('mysql_error' => $e->getMessage()));
|
|
}
|
|
|
|
if (mysqli_num_rows($result) == 0)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// Returns one single row anytime
|
|
$aRow = mysqli_fetch_array($result, MYSQLI_ASSOC);
|
|
mysqli_free_result($result);
|
|
|
|
if (!isset($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;
|
|
}
|
|
}
|
|
|
|
|
|
?>
|