400 lines
11 KiB
PHP
400 lines
11 KiB
PHP
<?php
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/*
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* 2007-2015 PrestaShop
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*
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* NOTICE OF LICENSE
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*
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* This source file is subject to the Open Software License (OSL 3.0)
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* that is bundled with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://opensource.org/licenses/osl-3.0.php
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@prestashop.com so we can send you a copy immediately.
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*
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* DISCLAIMER
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*
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* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
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* versions in the future. If you wish to customize PrestaShop for your
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* needs please refer to http://www.prestashop.com for more information.
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*
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* @author PrestaShop SA <contact@prestashop.com>
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* @copyright 2007-2015 PrestaShop SA
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* @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
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* International Registered Trademark & Property of PrestaShop SA
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*/
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/**
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* Class MySQLCore
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*/
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class MySQLCore extends Db
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{
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/** @var resource */
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protected $link;
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/* @var resource */
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protected $result;
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/**
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* Tries to connect to the database
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*
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* @see DbCore::connect()
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* @return resource
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* @throws PrestaShopDatabaseException
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*/
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public function connect()
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{
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if (!defined('_PS_MYSQL_REAL_ESCAPE_STRING_')) {
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define('_PS_MYSQL_REAL_ESCAPE_STRING_', function_exists('mysql_real_escape_string'));
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}
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if (!$this->link = mysql_connect($this->server, $this->user, $this->password)) {
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throw new PrestaShopDatabaseException(Tools::displayError('Link to database cannot be established.'));
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}
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if (!$this->set_db($this->database)) {
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throw new PrestaShopDatabaseException(Tools::displayError('The database selection cannot be made.'));
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}
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// UTF-8 support
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if (!mysql_query('SET NAMES \'utf8\'', $this->link)) {
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throw new PrestaShopDatabaseException(Tools::displayError('PrestaShop Fatal error: no utf-8 support. Please check your server configuration.'));
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}
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return $this->link;
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}
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/**
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* Tries to connect and create a new database
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*
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* @param string $host
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* @param string $user
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* @param string $password
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* @param string $dbname
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* @param bool $dropit If true, drops the created database.
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* @return bool|resource
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*/
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public static function createDatabase($host, $user, $password, $dbname, $dropit = false)
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{
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$link = mysql_connect($host, $user, $password);
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$success = mysql_query('CREATE DATABASE `'.str_replace('`', '\\`', $dbname).'`', $link);
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if ($dropit && (mysql_query('DROP DATABASE `'.str_replace('`', '\\`', $dbname).'`', $link) !== false)) {
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return true;
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}
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return $success;
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}
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/**
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* Destroys the database connection link
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*
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* @see DbCore::disconnect()
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*/
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public function disconnect()
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{
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mysql_close($this->link);
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}
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/**
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* Executes an SQL statement, returning a result set as a result resource object.
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*
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* @see DbCore::_query()
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* @param string $sql
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* @return resource
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*/
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protected function _query($sql)
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{
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return mysql_query($sql, $this->link);
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}
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/**
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* Returns the next row from the result set.
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*
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* @see DbCore::nextRow()
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* @param bool|resource $result
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* @return array|bool
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*/
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public function nextRow($result = false)
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{
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$return = false;
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if (is_resource($result) && $result) {
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$return = mysql_fetch_assoc($result);
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} elseif (is_resource($this->_result) && $this->_result) {
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$return = mysql_fetch_assoc($this->_result);
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}
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return $return;
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}
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/**
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* Returns the next row from the result set.
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*
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* @see DbCore::_numRows()
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* @param resource $result
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* @return int
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*/
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protected function _numRows($result)
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{
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return mysql_num_rows($result);
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}
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/**
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* Returns ID of the last inserted row.
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*
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* @see DbCore::Insert_ID()
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* @return int
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*/
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public function Insert_ID()
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{
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return mysql_insert_id($this->link);
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}
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/**
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* Return the number of rows affected by the last SQL query.
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*
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* @see DbCore::Affected_Rows()
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* @return int
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*/
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public function Affected_Rows()
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{
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return mysql_affected_rows($this->link);
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}
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/**
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* Returns error message.
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*
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* @see DbCore::getMsgError()
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* @param bool $query
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* @return string
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*/
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public function getMsgError($query = false)
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{
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return mysql_error($this->link);
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}
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/**
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* Returns error code.
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*
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* @see DbCore::getNumberError()
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* @return int
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*/
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public function getNumberError()
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{
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return mysql_errno($this->link);
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}
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/**
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* Returns database server version.
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*
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* @see DbCore::getVersion()
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* @return string
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*/
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public function getVersion()
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{
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return mysql_get_server_info($this->link);
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}
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/**
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* Escapes illegal characters in a string.
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*
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* @see DbCore::_escape()
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* @param string $str
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* @return string
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*/
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public function _escape($str)
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{
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return _PS_MYSQL_REAL_ESCAPE_STRING_ ? mysql_real_escape_string($str, $this->link) : addslashes($str);
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}
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/**
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* Switches to a different database.
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*
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* @see DbCore::set_db()
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* @param string $db_name
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* @return bool
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*/
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public function set_db($db_name)
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{
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return mysql_select_db($db_name, $this->link);
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}
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/**
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* Returns all rows from the result set.
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*
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* @see DbCore::getAll()
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* @param bool|resource $result
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* @return array
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*/
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protected function getAll($result = false)
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{
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if (!$result) {
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$result = $this->result;
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}
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$data = array();
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while ($row = $this->nextRow($result)) {
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$data[] = $row;
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}
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return $data;
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}
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/**
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* Try a connection to the database and check if at least one table with same prefix exists
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*
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* @see Db::hasTableWithSamePrefix()
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* @param string $server Server address
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* @param string $user Login for database connection
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* @param string $pwd Password for database connection
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* @param string $db Database name
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* @param string $prefix Tables prefix
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* @return bool
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*/
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public static function hasTableWithSamePrefix($server, $user, $pwd, $db, $prefix)
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{
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if (!$link = @mysql_connect($server, $user, $pwd, true)) {
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return false;
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}
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if (!@mysql_select_db($db, $link)) {
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return false;
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}
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$sql = 'SHOW TABLES LIKE \''.$prefix.'%\'';
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$result = mysql_query($sql);
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return (bool)@mysql_fetch_assoc($result);
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}
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/**
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* Try a connection to the database
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*
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* @see Db::checkConnection()
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* @param string $server Server address
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* @param string $user Login for database connection
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* @param string $pwd Password for database connection
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* @param string $db Database name
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* @param bool $newDbLink
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* @param string|null $engine
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* @param int $timeout
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* @return int Error code or 0 if connection was successful
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*/
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public static function tryToConnect($server, $user, $pwd, $db, $new_db_link = true, $engine = null, $timeout = 5)
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{
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ini_set('mysql.connect_timeout', $timeout);
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if (!$link = @mysql_connect($server, $user, $pwd, $new_db_link)) {
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return 1;
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}
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if (!@mysql_select_db($db, $link)) {
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return 2;
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}
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@mysql_close($link);
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return 0;
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}
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/**
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* Selects best table engine.
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*
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* @return string
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*/
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public function getBestEngine()
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{
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$value = 'InnoDB';
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$sql = 'SHOW VARIABLES WHERE Variable_name = \'have_innodb\'';
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$result = mysql_query($sql);
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if (!$result) {
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$value = 'MyISAM';
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}
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$row = mysql_fetch_assoc($result);
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if (!$row || strtolower($row['Value']) != 'yes') {
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$value = 'MyISAM';
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}
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/* MySQL >= 5.6 */
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$sql = 'SHOW ENGINES';
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$result = mysql_query($sql);
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while ($row = mysql_fetch_assoc($result)) {
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if ($row['Engine'] == 'InnoDB') {
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if (in_array($row['Support'], array('DEFAULT', 'YES'))) {
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$value = 'InnoDB';
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}
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break;
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}
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}
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return $value;
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}
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/**
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* Tries to connect to the database and create a table (checking creation privileges)
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*
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* @param string $server
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* @param string $user
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* @param string $pwd
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* @param string $db
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* @param string $prefix
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* @param string|null $engine Table engine
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* @return bool|string True, false or error
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*/
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public static function checkCreatePrivilege($server, $user, $pwd, $db, $prefix, $engine = null)
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{
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ini_set('mysql.connect_timeout', 5);
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if (!$link = @mysql_connect($server, $user, $pwd, true)) {
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return false;
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}
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if (!@mysql_select_db($db, $link)) {
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return false;
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}
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if ($engine === null) {
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$engine = 'MyISAM';
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}
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$result = mysql_query('
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CREATE TABLE `'.$prefix.'test` (
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`test` tinyint(1) unsigned NOT NULL
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) ENGINE='.$engine, $link);
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if (!$result) {
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return mysql_error($link);
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}
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mysql_query('DROP TABLE `'.$prefix.'test`', $link);
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return true;
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}
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/**
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* Try a connection to the database and set names to UTF-8
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*
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* @see Db::checkEncoding()
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* @param string $server Server address
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* @param string $user Login for database connection
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* @param string $pwd Password for database connection
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* @return bool
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*/
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public static function tryUTF8($server, $user, $pwd)
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{
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$link = @mysql_connect($server, $user, $pwd);
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$ret = mysql_query('SET NAMES \'utf8\'', $link);
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@mysql_close($link);
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return $ret;
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}
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/**
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* Checks if auto increment value and offset is 1
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*
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* @param string $server
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* @param string $user
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* @param string $pwd
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* @return bool
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*/
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public static function checkAutoIncrement($server, $user, $pwd)
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{
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$link = @mysql_connect($server, $user, $pwd);
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$ret = (bool)(($result = mysql_query('SELECT @@auto_increment_increment as aii', $link)) && ($row = mysql_fetch_assoc($result)) && $row['aii'] == 1);
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$ret &= (bool)(($result = mysql_query('SELECT @@auto_increment_offset as aio', $link)) && ($row = mysql_fetch_assoc($result)) && $row['aio'] == 1);
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@mysql_close($link);
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return $ret;
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}
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}
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