9c3c0b704b
array_fill_keys() was introduced in PHP 5.2.0 and works like array_flip() except that it does only one thing (copying keys) instead of two things (copying keys and values). That makes it faster and more obvious. When array_flip() calls were paired, I left them as is, because that pattern is too cute. I couldn't kill something so cute. Sometimes it was hard to figure out whether the values in array_flip() result were used. That's the point of this change. If you use array_fill_keys(), the intention is obvious. Change-Id: If8d340a8bc816a15afec37e64f00106ae45e10ed
641 lines
17 KiB
PHP
641 lines
17 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 Installer
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*/
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use Wikimedia\Rdbms\Database;
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use Wikimedia\Rdbms\DBConnectionError;
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use Wikimedia\Rdbms\DBQueryError;
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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 Installer
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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 = [
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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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];
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protected $internalDefaults = [
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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 = [ 'InnoDB' ];
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public static $minimumVersion = '5.5.8';
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protected static $notMinimumVersionMessage = 'config-mysql-old';
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public $webUserPrivs = [
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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( 'mysqli' );
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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 $this->getTextBox(
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'wgDBserver',
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'config-db-host',
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[],
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$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', [], wfMessage( 'config-db-wiki-settings' )->text() ) .
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$this->getTextBox( 'wgDBname', 'config-db-name', [ 'dir' => 'ltr' ],
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$this->parent->getHelpBox( 'config-db-name-help' ) ) .
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$this->getTextBox( 'wgDBprefix', 'config-db-prefix', [ 'dir' => 'ltr' ],
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$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 = $this->setVarsFromRequest( [ 'wgDBserver', 'wgDBname', 'wgDBprefix' ] );
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// Validate them.
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$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 Database $conn
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*/
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$conn = $status->value;
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'@phan-var Database $conn';
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// Check version
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return static::meetsMinimumRequirement( $conn->getServerVersion() );
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}
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/**
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* @return Status
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*/
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public function openConnection() {
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$status = Status::newGood();
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try {
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/** @var DatabaseMysqlBase $db */
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$db = Database::factory( 'mysql', [
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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->showStatusMessage( $status );
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return;
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}
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/**
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* @var Database $conn
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*/
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$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 = $this->escapeLikeInternal( $this->getVar( 'wgDBprefix' ) . 'revision', '\\' );
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$res = $conn->query( "SHOW TABLE STATUS LIKE '$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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$existingEngine = $row->Engine ?? $row->Type;
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}
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} else {
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$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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* @param string $s
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* @param string $escapeChar
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* @return string
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*/
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protected function escapeLikeInternal( $s, $escapeChar = '`' ) {
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return str_replace( [ $escapeChar, '%', '_' ],
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[ "{$escapeChar}{$escapeChar}", "{$escapeChar}%", "{$escapeChar}_" ],
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$s );
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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 Database $conn
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*/
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$conn = $status->value;
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$engines = [];
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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 $engines;
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}
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/**
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* Get a list of character sets that are available and supported
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*
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* @return array
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*/
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public function getCharsets() {
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return [ 'binary', 'utf8' ];
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}
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/**
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* Return true if the install user can create accounts
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*
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* @return bool
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*/
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public function canCreateAccounts() {
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$status = $this->getConnection();
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if ( !$status->isOK() ) {
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return false;
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}
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/** @var Database $conn */
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$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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[ 'GRANTEE' => $quotedUser ], __METHOD__ );
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$insertMysql = false;
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$grantOptions = array_fill_keys( $this->webUserPrivs, true );
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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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[
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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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[
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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 = $this->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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* Convert a wildcard (as used in LIKE) to a regex
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* Slashes are escaped, slash terminators included
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* @param string $wildcard
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* @return string
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*/
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protected function likeToRegex( $wildcard ) {
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$r = preg_quote( $wildcard, '/' );
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$r = strtr( $r, [
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'%' => '.*',
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'_' => '.'
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] );
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return "/$r/s";
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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( $engines ) );
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}
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// If the current default charset is not supported, use a charset that is
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$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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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( [ '_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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Database::factory( 'mysql', [
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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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] );
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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 = [
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'name' => 'user',
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'callback' => [ $this, 'setupUser' ],
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];
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$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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/** @var Database $conn */
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$conn = $status->value;
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$dbName = $this->getVar( 'wgDBname' );
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if ( !$this->databaseExists( $dbName ) ) {
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$conn->query(
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"CREATE DATABASE " . $conn->addIdentifierQuotes( $dbName ) . "CHARACTER SET utf8",
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__METHOD__
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);
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}
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$conn->selectDB( $dbName );
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$this->setupSchemaVars();
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return $status;
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}
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/**
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* Try to see if a given database exists
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* @param string $dbName Database name to check
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* @return bool
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*/
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private function databaseExists( $dbName ) {
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$encDatabase = $this->db->addQuotes( $dbName );
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return $this->db->query(
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"SELECT 1 FROM INFORMATION_SCHEMA.SCHEMATA WHERE SCHEMA_NAME = $encDatabase",
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__METHOD__
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)->numRows() > 0;
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}
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/**
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* @return Status
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*/
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public function setupUser() {
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$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 = [];
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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
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Database::factory( 'mysql', [
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'host' => $server,
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'user' => $dbUser,
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'password' => $password,
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'dbname' => false,
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'flags' => 0,
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'tablePrefix' => $this->getVar( 'wgDBprefix' )
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] );
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$grantableNames[] = $this->buildFullUserName( $dbUser, $server );
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$tryToCreate = false;
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} catch ( DBConnectionError $e ) {
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$tryToCreate = true;
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}
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} else {
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$grantableNames[] = $this->buildFullUserName( $dbUser, $server );
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$tryToCreate = false;
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}
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if ( $tryToCreate ) {
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$createHostList = [
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$server,
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'localhost',
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'localhost.localdomain',
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'%'
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];
|
|
|
|
$createHostList = array_unique( $createHostList );
|
|
$escPass = $this->db->addQuotes( $password );
|
|
|
|
foreach ( $createHostList as $host ) {
|
|
$fullName = $this->buildFullUserName( $dbUser, $host );
|
|
if ( !$this->userDefinitelyExists( $host, $dbUser ) ) {
|
|
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->getMessage() );
|
|
}
|
|
}
|
|
} 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->getMessage() );
|
|
}
|
|
}
|
|
|
|
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 bool
|
|
*/
|
|
private function userDefinitelyExists( $host, $user ) {
|
|
try {
|
|
$res = $this->db->selectRow( 'mysql.user', [ 'Host', 'User' ],
|
|
[ '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 = [];
|
|
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 [
|
|
'wgDBTableOptions' => $this->getTableOptions(),
|
|
'wgDBname' => $this->getVar( 'wgDBname' ),
|
|
'wgDBuser' => $this->getVar( 'wgDBuser' ),
|
|
'wgDBpassword' => $this->getVar( 'wgDBpassword' ),
|
|
];
|
|
}
|
|
|
|
public function getLocalSettings() {
|
|
$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}\";";
|
|
}
|
|
}
|