mirror of
https://github.com/YunoHost-Apps/mediawiki_ynh.git
synced 2024-09-03 19:46:05 +02:00
667 lines
18 KiB
PHP
667 lines
18 KiB
PHP
<?php
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/**
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* MySQL-specific installer.
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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; either version 2 of the License, or
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* (at your option) any later version.
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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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup Deployment
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*/
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/**
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* Class for setting up the MediaWiki database using MySQL.
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*
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* @ingroup Deployment
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* @since 1.17
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*/
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class MysqlInstaller extends DatabaseInstaller {
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protected $globalNames = array(
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'wgDBserver',
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'wgDBname',
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'wgDBuser',
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'wgDBpassword',
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'wgDBprefix',
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'wgDBTableOptions',
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'wgDBmysql5',
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);
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protected $internalDefaults = array(
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'_MysqlEngine' => 'InnoDB',
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'_MysqlCharset' => 'binary',
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'_InstallUser' => 'root',
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);
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public $supportedEngines = array( 'InnoDB', 'MyISAM' );
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public $minimumVersion = '5.0.2';
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public $webUserPrivs = array(
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'DELETE',
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'INSERT',
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'SELECT',
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'UPDATE',
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'CREATE TEMPORARY TABLES',
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);
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/**
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* @return string
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*/
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public function getName() {
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return 'mysql';
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}
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/**
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* @return Bool
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*/
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public function isCompiled() {
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return self::checkExtension( 'mysql' ) || self::checkExtension( 'mysqli' );
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}
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/**
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* @return array
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*/
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public function getGlobalDefaults() {
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return array();
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}
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/**
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* @return string
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*/
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public function getConnectForm() {
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return $this->getTextBox(
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'wgDBserver',
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'config-db-host',
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array(),
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$this->parent->getHelpBox( 'config-db-host-help' )
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) .
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Html::openElement( 'fieldset' ) .
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Html::element( 'legend', array(), wfMessage( 'config-db-wiki-settings' )->text() ) .
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$this->getTextBox( 'wgDBname', 'config-db-name', array( 'dir' => 'ltr' ),
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$this->parent->getHelpBox( 'config-db-name-help' ) ) .
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$this->getTextBox( 'wgDBprefix', 'config-db-prefix', array( 'dir' => 'ltr' ),
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$this->parent->getHelpBox( 'config-db-prefix-help' ) ) .
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Html::closeElement( 'fieldset' ) .
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$this->getInstallUserBox();
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}
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public function submitConnectForm() {
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// Get variables from the request.
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$newValues = $this->setVarsFromRequest( array( 'wgDBserver', 'wgDBname', 'wgDBprefix' ) );
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// Validate them.
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$status = Status::newGood();
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if ( !strlen( $newValues['wgDBserver'] ) ) {
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$status->fatal( 'config-missing-db-host' );
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}
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if ( !strlen( $newValues['wgDBname'] ) ) {
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$status->fatal( 'config-missing-db-name' );
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} elseif ( !preg_match( '/^[a-z0-9+_-]+$/i', $newValues['wgDBname'] ) ) {
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$status->fatal( 'config-invalid-db-name', $newValues['wgDBname'] );
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}
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if ( !preg_match( '/^[a-z0-9_-]*$/i', $newValues['wgDBprefix'] ) ) {
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$status->fatal( 'config-invalid-db-prefix', $newValues['wgDBprefix'] );
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}
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if ( !$status->isOK() ) {
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return $status;
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}
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// Submit user box
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$status = $this->submitInstallUserBox();
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if ( !$status->isOK() ) {
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return $status;
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}
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// Try to connect
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$status = $this->getConnection();
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if ( !$status->isOK() ) {
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return $status;
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}
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/**
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* @var $conn DatabaseBase
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*/
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$conn = $status->value;
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// Check version
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$version = $conn->getServerVersion();
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if ( version_compare( $version, $this->minimumVersion ) < 0 ) {
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return Status::newFatal( 'config-mysql-old', $this->minimumVersion, $version );
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}
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return $status;
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}
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/**
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* @return Status
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*/
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public function openConnection() {
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$status = Status::newGood();
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try {
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$db = DatabaseBase::factory( 'mysql', array(
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'host' => $this->getVar( 'wgDBserver' ),
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'user' => $this->getVar( '_InstallUser' ),
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'password' => $this->getVar( '_InstallPassword' ),
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'dbname' => false,
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'flags' => 0,
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'tablePrefix' => $this->getVar( 'wgDBprefix' ) ) );
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$status->value = $db;
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} catch ( DBConnectionError $e ) {
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$status->fatal( 'config-connection-error', $e->getMessage() );
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}
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return $status;
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}
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public function preUpgrade() {
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global $wgDBuser, $wgDBpassword;
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$status = $this->getConnection();
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if ( !$status->isOK() ) {
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$this->parent->showStatusError( $status );
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return;
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}
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/**
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* @var $conn DatabaseBase
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*/
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$conn = $status->value;
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$conn->selectDB( $this->getVar( 'wgDBname' ) );
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# Determine existing default character set
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if ( $conn->tableExists( "revision", __METHOD__ ) ) {
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$revision = $conn->buildLike( $this->getVar( 'wgDBprefix' ) . 'revision' );
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$res = $conn->query( "SHOW TABLE STATUS $revision", __METHOD__ );
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$row = $conn->fetchObject( $res );
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if ( !$row ) {
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$this->parent->showMessage( 'config-show-table-status' );
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$existingSchema = false;
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$existingEngine = false;
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} else {
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if ( preg_match( '/^latin1/', $row->Collation ) ) {
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$existingSchema = 'latin1';
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} elseif ( preg_match( '/^utf8/', $row->Collation ) ) {
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$existingSchema = 'utf8';
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} elseif ( preg_match( '/^binary/', $row->Collation ) ) {
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$existingSchema = 'binary';
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} else {
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$existingSchema = false;
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$this->parent->showMessage( 'config-unknown-collation' );
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}
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if ( isset( $row->Engine ) ) {
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$existingEngine = $row->Engine;
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} else {
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$existingEngine = $row->Type;
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}
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}
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} else {
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$existingSchema = false;
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$existingEngine = false;
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}
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if ( $existingSchema && $existingSchema != $this->getVar( '_MysqlCharset' ) ) {
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$this->setVar( '_MysqlCharset', $existingSchema );
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}
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if ( $existingEngine && $existingEngine != $this->getVar( '_MysqlEngine' ) ) {
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$this->setVar( '_MysqlEngine', $existingEngine );
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}
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# Normal user and password are selected after this step, so for now
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# just copy these two
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$wgDBuser = $this->getVar( '_InstallUser' );
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$wgDBpassword = $this->getVar( '_InstallPassword' );
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}
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/**
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* Get a list of storage engines that are available and supported
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*
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* @return array
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*/
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public function getEngines() {
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$status = $this->getConnection();
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/**
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* @var $conn DatabaseBase
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*/
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$conn = $status->value;
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$engines = array();
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$res = $conn->query( 'SHOW ENGINES', __METHOD__ );
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foreach ( $res as $row ) {
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if ( $row->Support == 'YES' || $row->Support == 'DEFAULT' ) {
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$engines[] = $row->Engine;
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}
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}
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$engines = array_intersect( $this->supportedEngines, $engines );
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return $engines;
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}
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/**
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* Get a list of character sets that are available and supported
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*
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* @return array
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*/
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public function getCharsets() {
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return array( 'binary', 'utf8' );
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}
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/**
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* Return true if the install user can create accounts
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*
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* @return bool
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*/
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public function canCreateAccounts() {
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$status = $this->getConnection();
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if ( !$status->isOK() ) {
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return false;
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}
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/**
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* @var $conn DatabaseBase
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*/
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$conn = $status->value;
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// Get current account name
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$currentName = $conn->selectField( '', 'CURRENT_USER()', '', __METHOD__ );
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$parts = explode( '@', $currentName );
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if ( count( $parts ) != 2 ) {
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return false;
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}
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$quotedUser = $conn->addQuotes( $parts[0] ) .
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'@' . $conn->addQuotes( $parts[1] );
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// The user needs to have INSERT on mysql.* to be able to CREATE USER
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// The grantee will be double-quoted in this query, as required
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$res = $conn->select( 'INFORMATION_SCHEMA.USER_PRIVILEGES', '*',
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array( 'GRANTEE' => $quotedUser ), __METHOD__ );
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$insertMysql = false;
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$grantOptions = array_flip( $this->webUserPrivs );
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foreach ( $res as $row ) {
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if ( $row->PRIVILEGE_TYPE == 'INSERT' ) {
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$insertMysql = true;
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}
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if ( $row->IS_GRANTABLE ) {
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unset( $grantOptions[$row->PRIVILEGE_TYPE] );
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}
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}
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// Check for DB-specific privs for mysql.*
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if ( !$insertMysql ) {
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$row = $conn->selectRow( 'INFORMATION_SCHEMA.SCHEMA_PRIVILEGES', '*',
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array(
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'GRANTEE' => $quotedUser,
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'TABLE_SCHEMA' => 'mysql',
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'PRIVILEGE_TYPE' => 'INSERT',
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), __METHOD__ );
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if ( $row ) {
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$insertMysql = true;
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}
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}
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if ( !$insertMysql ) {
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return false;
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}
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// Check for DB-level grant options
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$res = $conn->select( 'INFORMATION_SCHEMA.SCHEMA_PRIVILEGES', '*',
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array(
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'GRANTEE' => $quotedUser,
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'IS_GRANTABLE' => 1,
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), __METHOD__ );
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foreach ( $res as $row ) {
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$regex = $conn->likeToRegex( $row->TABLE_SCHEMA );
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if ( preg_match( $regex, $this->getVar( 'wgDBname' ) ) ) {
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unset( $grantOptions[$row->PRIVILEGE_TYPE] );
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}
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}
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if ( count( $grantOptions ) ) {
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// Can't grant everything
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return false;
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}
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return true;
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}
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/**
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* @return string
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*/
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public function getSettingsForm() {
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if ( $this->canCreateAccounts() ) {
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$noCreateMsg = false;
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} else {
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$noCreateMsg = 'config-db-web-no-create-privs';
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}
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$s = $this->getWebUserBox( $noCreateMsg );
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// Do engine selector
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$engines = $this->getEngines();
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// If the current default engine is not supported, use an engine that is
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if ( !in_array( $this->getVar( '_MysqlEngine' ), $engines ) ) {
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$this->setVar( '_MysqlEngine', reset( $engines ) );
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}
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$s .= Xml::openElement( 'div', array(
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'id' => 'dbMyisamWarning'
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) );
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$myisamWarning = 'config-mysql-myisam-dep';
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if ( count( $engines ) === 1 ) {
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$myisamWarning = 'config-mysql-only-myisam-dep';
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}
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$s .= $this->parent->getWarningBox( wfMessage( $myisamWarning )->text() );
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$s .= Xml::closeElement( 'div' );
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if ( $this->getVar( '_MysqlEngine' ) != 'MyISAM' ) {
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$s .= Xml::openElement( 'script', array( 'type' => 'text/javascript' ) );
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$s .= '$(\'#dbMyisamWarning\').hide();';
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$s .= Xml::closeElement( 'script' );
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}
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if ( count( $engines ) >= 2 ) {
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// getRadioSet() builds a set of labeled radio buttons.
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// For grep: The following messages are used as the item labels:
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// config-mysql-innodb, config-mysql-myisam
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$s .= $this->getRadioSet( array(
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'var' => '_MysqlEngine',
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'label' => 'config-mysql-engine',
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'itemLabelPrefix' => 'config-mysql-',
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'values' => $engines,
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'itemAttribs' => array(
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'MyISAM' => array(
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'class' => 'showHideRadio',
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'rel' => 'dbMyisamWarning'
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),
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'InnoDB' => array(
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'class' => 'hideShowRadio',
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'rel' => 'dbMyisamWarning'
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)
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)
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) );
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$s .= $this->parent->getHelpBox( 'config-mysql-engine-help' );
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}
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// If the current default charset is not supported, use a charset that is
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$charsets = $this->getCharsets();
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if ( !in_array( $this->getVar( '_MysqlCharset' ), $charsets ) ) {
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$this->setVar( '_MysqlCharset', reset( $charsets ) );
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}
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// Do charset selector
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if ( count( $charsets ) >= 2 ) {
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// getRadioSet() builds a set of labeled radio buttons.
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// For grep: The following messages are used as the item labels:
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// config-mysql-binary, config-mysql-utf8
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$s .= $this->getRadioSet( array(
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'var' => '_MysqlCharset',
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'label' => 'config-mysql-charset',
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'itemLabelPrefix' => 'config-mysql-',
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'values' => $charsets
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) );
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$s .= $this->parent->getHelpBox( 'config-mysql-charset-help' );
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}
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return $s;
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}
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/**
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* @return Status
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*/
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public function submitSettingsForm() {
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$this->setVarsFromRequest( array( '_MysqlEngine', '_MysqlCharset' ) );
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$status = $this->submitWebUserBox();
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if ( !$status->isOK() ) {
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return $status;
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}
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// Validate the create checkbox
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$canCreate = $this->canCreateAccounts();
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if ( !$canCreate ) {
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$this->setVar( '_CreateDBAccount', false );
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$create = false;
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} else {
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$create = $this->getVar( '_CreateDBAccount' );
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}
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if ( !$create ) {
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// Test the web account
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try {
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$db = DatabaseBase::factory( 'mysql', array(
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'host' => $this->getVar( 'wgDBserver' ),
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'user' => $this->getVar( 'wgDBuser' ),
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'password' => $this->getVar( 'wgDBpassword' ),
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'dbname' => false,
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'flags' => 0,
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'tablePrefix' => $this->getVar( 'wgDBprefix' ) ) );
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} catch ( DBConnectionError $e ) {
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return Status::newFatal( 'config-connection-error', $e->getMessage() );
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}
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}
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// Validate engines and charsets
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// This is done pre-submit already so it's just for security
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$engines = $this->getEngines();
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if ( !in_array( $this->getVar( '_MysqlEngine' ), $engines ) ) {
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$this->setVar( '_MysqlEngine', reset( $engines ) );
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}
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$charsets = $this->getCharsets();
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if ( !in_array( $this->getVar( '_MysqlCharset' ), $charsets ) ) {
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$this->setVar( '_MysqlCharset', reset( $charsets ) );
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}
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return Status::newGood();
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}
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public function preInstall() {
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# Add our user callback to installSteps, right before the tables are created.
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$callback = array(
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'name' => 'user',
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'callback' => array( $this, 'setupUser' ),
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);
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$this->parent->addInstallStep( $callback, 'tables' );
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}
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/**
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* @return Status
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*/
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public function setupDatabase() {
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$status = $this->getConnection();
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if ( !$status->isOK() ) {
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return $status;
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}
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$conn = $status->value;
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$dbName = $this->getVar( 'wgDBname' );
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if ( !$conn->selectDB( $dbName ) ) {
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$conn->query(
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"CREATE DATABASE " . $conn->addIdentifierQuotes( $dbName ) . "CHARACTER SET utf8",
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__METHOD__
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);
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$conn->selectDB( $dbName );
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}
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$this->setupSchemaVars();
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return $status;
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}
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/**
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* @return Status
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*/
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public function setupUser() {
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$dbUser = $this->getVar( 'wgDBuser' );
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if ( $dbUser == $this->getVar( '_InstallUser' ) ) {
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return Status::newGood();
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}
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$status = $this->getConnection();
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if ( !$status->isOK() ) {
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return $status;
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}
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$this->setupSchemaVars();
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$dbName = $this->getVar( 'wgDBname' );
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$this->db->selectDB( $dbName );
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$server = $this->getVar( 'wgDBserver' );
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$password = $this->getVar( 'wgDBpassword' );
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$grantableNames = array();
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if ( $this->getVar( '_CreateDBAccount' ) ) {
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// Before we blindly try to create a user that already has access,
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try { // first attempt to connect to the database
|
|
$db = DatabaseBase::factory( 'mysql', array(
|
|
'host' => $server,
|
|
'user' => $dbUser,
|
|
'password' => $password,
|
|
'dbname' => false,
|
|
'flags' => 0,
|
|
'tablePrefix' => $this->getVar( 'wgDBprefix' ) ) );
|
|
$grantableNames[] = $this->buildFullUserName( $dbUser, $server );
|
|
$tryToCreate = false;
|
|
} catch ( DBConnectionError $e ) {
|
|
$tryToCreate = true;
|
|
}
|
|
} else {
|
|
$grantableNames[] = $this->buildFullUserName( $dbUser, $server );
|
|
$tryToCreate = false;
|
|
}
|
|
|
|
if ( $tryToCreate ) {
|
|
$createHostList = array(
|
|
$server,
|
|
'localhost',
|
|
'localhost.localdomain',
|
|
'%'
|
|
);
|
|
|
|
$createHostList = array_unique( $createHostList );
|
|
$escPass = $this->db->addQuotes( $password );
|
|
|
|
foreach ( $createHostList as $host ) {
|
|
$fullName = $this->buildFullUserName( $dbUser, $host );
|
|
if ( !$this->userDefinitelyExists( $dbUser, $host ) ) {
|
|
try {
|
|
$this->db->begin( __METHOD__ );
|
|
$this->db->query( "CREATE USER $fullName IDENTIFIED BY $escPass", __METHOD__ );
|
|
$this->db->commit( __METHOD__ );
|
|
$grantableNames[] = $fullName;
|
|
} catch ( DBQueryError $dqe ) {
|
|
if ( $this->db->lastErrno() == 1396 /* ER_CANNOT_USER */ ) {
|
|
// User (probably) already exists
|
|
$this->db->rollback( __METHOD__ );
|
|
$status->warning( 'config-install-user-alreadyexists', $dbUser );
|
|
$grantableNames[] = $fullName;
|
|
break;
|
|
} else {
|
|
// If we couldn't create for some bizzare reason and the
|
|
// user probably doesn't exist, skip the grant
|
|
$this->db->rollback( __METHOD__ );
|
|
$status->warning( 'config-install-user-create-failed', $dbUser, $dqe->getText() );
|
|
}
|
|
}
|
|
} else {
|
|
$status->warning( 'config-install-user-alreadyexists', $dbUser );
|
|
$grantableNames[] = $fullName;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Try to grant to all the users we know exist or we were able to create
|
|
$dbAllTables = $this->db->addIdentifierQuotes( $dbName ) . '.*';
|
|
foreach ( $grantableNames as $name ) {
|
|
try {
|
|
$this->db->begin( __METHOD__ );
|
|
$this->db->query( "GRANT ALL PRIVILEGES ON $dbAllTables TO $name", __METHOD__ );
|
|
$this->db->commit( __METHOD__ );
|
|
} catch ( DBQueryError $dqe ) {
|
|
$this->db->rollback( __METHOD__ );
|
|
$status->fatal( 'config-install-user-grant-failed', $dbUser, $dqe->getText() );
|
|
}
|
|
}
|
|
|
|
return $status;
|
|
}
|
|
|
|
/**
|
|
* Return a formal 'User'@'Host' username for use in queries
|
|
* @param string $name Username, quotes will be added
|
|
* @param string $host Hostname, quotes will be added
|
|
* @return String
|
|
*/
|
|
private function buildFullUserName( $name, $host ) {
|
|
return $this->db->addQuotes( $name ) . '@' . $this->db->addQuotes( $host );
|
|
}
|
|
|
|
/**
|
|
* Try to see if the user account exists. Our "superuser" may not have
|
|
* access to mysql.user, so false means "no" or "maybe"
|
|
* @param string $host Hostname to check
|
|
* @param string $user Username to check
|
|
* @return boolean
|
|
*/
|
|
private function userDefinitelyExists( $host, $user ) {
|
|
try {
|
|
$res = $this->db->selectRow( 'mysql.user', array( 'Host', 'User' ),
|
|
array( 'Host' => $host, 'User' => $user ), __METHOD__ );
|
|
|
|
return (bool)$res;
|
|
} catch ( DBQueryError $dqe ) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return any table options to be applied to all tables that don't
|
|
* override them.
|
|
*
|
|
* @return String
|
|
*/
|
|
protected function getTableOptions() {
|
|
$options = array();
|
|
if ( $this->getVar( '_MysqlEngine' ) !== null ) {
|
|
$options[] = "ENGINE=" . $this->getVar( '_MysqlEngine' );
|
|
}
|
|
if ( $this->getVar( '_MysqlCharset' ) !== null ) {
|
|
$options[] = 'DEFAULT CHARSET=' . $this->getVar( '_MysqlCharset' );
|
|
}
|
|
|
|
return implode( ', ', $options );
|
|
}
|
|
|
|
/**
|
|
* Get variables to substitute into tables.sql and the SQL patch files.
|
|
*
|
|
* @return array
|
|
*/
|
|
public function getSchemaVars() {
|
|
return array(
|
|
'wgDBTableOptions' => $this->getTableOptions(),
|
|
'wgDBname' => $this->getVar( 'wgDBname' ),
|
|
'wgDBuser' => $this->getVar( 'wgDBuser' ),
|
|
'wgDBpassword' => $this->getVar( 'wgDBpassword' ),
|
|
);
|
|
}
|
|
|
|
public function getLocalSettings() {
|
|
$dbmysql5 = wfBoolToStr( $this->getVar( 'wgDBmysql5', true ) );
|
|
$prefix = LocalSettingsGenerator::escapePhpString( $this->getVar( 'wgDBprefix' ) );
|
|
$tblOpts = LocalSettingsGenerator::escapePhpString( $this->getTableOptions() );
|
|
|
|
return "# MySQL specific settings
|
|
\$wgDBprefix = \"{$prefix}\";
|
|
|
|
# MySQL table options to use during installation or update
|
|
\$wgDBTableOptions = \"{$tblOpts}\";
|
|
|
|
# Experimental charset support for MySQL 5.0.
|
|
\$wgDBmysql5 = {$dbmysql5};";
|
|
}
|
|
}
|