includes/installer/MysqlInstaller.php

   1 <?php
   2 /**
   3  * MySQL-specific installer.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Deployment
  22  */
  23
  24 /**
  25  * Class for setting up the MediaWiki database using MySQL.
  26  *
  27  * @ingroup Deployment
  28  * @since 1.17
  29  */
  30 class MysqlInstaller extends DatabaseInstaller {
  31
  32         protected $globalNames = array(
  33                 'wgDBserver',
  34                 'wgDBname',
  35                 'wgDBuser',
  36                 'wgDBpassword',
  37                 'wgDBprefix',
  38                 'wgDBTableOptions',
  39                 'wgDBmysql5',
  40         );
  41
  42         protected $internalDefaults = array(
  43                 '_MysqlEngine' => 'InnoDB',
  44                 '_MysqlCharset' => 'binary',
  45                 '_InstallUser' => 'root',
  46         );
  47
  48         public $supportedEngines = array( 'InnoDB', 'MyISAM' );
  49
  50         public $minimumVersion = '5.0.2';
  51
  52         public $webUserPrivs = array(
  53                 'DELETE',
  54                 'INSERT',
  55                 'SELECT',
  56                 'UPDATE',
  57                 'CREATE TEMPORARY TABLES',
  58         );
  59
  60         /**
  61          * @return string
  62          */
  63         public function getName() {
  64                 return 'mysql';
  65         }
  66
  67         public function __construct( $parent ) {
  68                 parent::__construct( $parent );
  69         }
  70
  71         /**
  72          * @return Bool
  73          */
  74         public function isCompiled() {
  75                 return self::checkExtension( 'mysql' );
  76         }
  77
  78         /**
  79          * @return array
  80          */
  81         public function getGlobalDefaults() {
  82                 return array();
  83         }
  84
  85         /**
  86          * @return string
  87          */
  88         public function getConnectForm() {
  89                 return $this->getTextBox( 'wgDBserver', 'config-db-host', array(), $this->parent->getHelpBox( 'config-db-host-help' ) ) .
  90                         Html::openElement( 'fieldset' ) .
  91                         Html::element( 'legend', array(), wfMessage( 'config-db-wiki-settings' )->text() ) .
  92                         $this->getTextBox( 'wgDBname', 'config-db-name', array( 'dir' => 'ltr' ),
  93                                 $this->parent->getHelpBox( 'config-db-name-help' ) ) .
  94                         $this->getTextBox( 'wgDBprefix', 'config-db-prefix', array( 'dir' => 'ltr' ),
  95                                 $this->parent->getHelpBox( 'config-db-prefix-help' ) ) .
  96                         Html::closeElement( 'fieldset' ) .
  97                         $this->getInstallUserBox();
  98         }
  99
 100         public function submitConnectForm() {
 101                 // Get variables from the request.
 102                 $newValues = $this->setVarsFromRequest( array( 'wgDBserver', 'wgDBname', 'wgDBprefix' ) );
 103
 104                 // Validate them.
 105                 $status = Status::newGood();
 106                 if ( !strlen( $newValues['wgDBserver'] ) ) {
 107                         $status->fatal( 'config-missing-db-host' );
 108                 }
 109                 if ( !strlen( $newValues['wgDBname'] ) ) {
 110                         $status->fatal( 'config-missing-db-name' );
 111                 } elseif ( !preg_match( '/^[a-z0-9+_-]+$/i', $newValues['wgDBname'] ) ) {
 112                         $status->fatal( 'config-invalid-db-name', $newValues['wgDBname'] );
 113                 }
 114                 if ( !preg_match( '/^[a-z0-9_-]*$/i', $newValues['wgDBprefix'] ) ) {
 115                         $status->fatal( 'config-invalid-db-prefix', $newValues['wgDBprefix'] );
 116                 }
 117                 if ( !$status->isOK() ) {
 118                         return $status;
 119                 }
 120
 121                 // Submit user box
 122                 $status = $this->submitInstallUserBox();
 123                 if ( !$status->isOK() ) {
 124                         return $status;
 125                 }
 126
 127                 // Try to connect
 128                 $status = $this->getConnection();
 129                 if ( !$status->isOK() ) {
 130                         return $status;
 131                 }
 132                 /**
 133                  * @var $conn DatabaseBase
 134                  */
 135                 $conn = $status->value;
 136
 137                 // Check version
 138                 $version = $conn->getServerVersion();
 139                 if ( version_compare( $version, $this->minimumVersion ) < 0 ) {
 140                         return Status::newFatal( 'config-mysql-old', $this->minimumVersion, $version );
 141                 }
 142
 143                 return $status;
 144         }
 145
 146         /**
 147          * @return Status
 148          */
 149         public function openConnection() {
 150                 $status = Status::newGood();
 151                 try {
 152                         $db = new DatabaseMysql(
 153                                 $this->getVar( 'wgDBserver' ),
 154                                 $this->getVar( '_InstallUser' ),
 155                                 $this->getVar( '_InstallPassword' ),
 156                                 false,
 157                                 0,
 158                                 $this->getVar( 'wgDBprefix' )
 159                         );
 160                         $status->value = $db;
 161                 } catch ( DBConnectionError $e ) {
 162                         $status->fatal( 'config-connection-error', $e->getMessage() );
 163                 }
 164
 165                 return $status;
 166         }
 167
 168         public function preUpgrade() {
 169                 global $wgDBuser, $wgDBpassword;
 170
 171                 $status = $this->getConnection();
 172                 if ( !$status->isOK() ) {
 173                         $this->parent->showStatusError( $status );
 174
 175                         return;
 176                 }
 177                 /**
 178                  * @var $conn DatabaseBase
 179                  */
 180                 $conn = $status->value;
 181                 $conn->selectDB( $this->getVar( 'wgDBname' ) );
 182
 183                 # Determine existing default character set
 184                 if ( $conn->tableExists( "revision", __METHOD__ ) ) {
 185                         $revision = $conn->buildLike( $this->getVar( 'wgDBprefix' ) . 'revision' );
 186                         $res = $conn->query( "SHOW TABLE STATUS $revision", __METHOD__ );
 187                         $row = $conn->fetchObject( $res );
 188                         if ( !$row ) {
 189                                 $this->parent->showMessage( 'config-show-table-status' );
 190                                 $existingSchema = false;
 191                                 $existingEngine = false;
 192                         } else {
 193                                 if ( preg_match( '/^latin1/', $row->Collation ) ) {
 194                                         $existingSchema = 'latin1';
 195                                 } elseif ( preg_match( '/^utf8/', $row->Collation ) ) {
 196                                         $existingSchema = 'utf8';
 197                                 } elseif ( preg_match( '/^binary/', $row->Collation ) ) {
 198                                         $existingSchema = 'binary';
 199                                 } else {
 200                                         $existingSchema = false;
 201                                         $this->parent->showMessage( 'config-unknown-collation' );
 202                                 }
 203                                 if ( isset( $row->Engine ) ) {
 204                                         $existingEngine = $row->Engine;
 205                                 } else {
 206                                         $existingEngine = $row->Type;
 207                                 }
 208                         }
 209                 } else {
 210                         $existingSchema = false;
 211                         $existingEngine = false;
 212                 }
 213
 214                 if ( $existingSchema && $existingSchema != $this->getVar( '_MysqlCharset' ) ) {
 215                         $this->setVar( '_MysqlCharset', $existingSchema );
 216                 }
 217                 if ( $existingEngine && $existingEngine != $this->getVar( '_MysqlEngine' ) ) {
 218                         $this->setVar( '_MysqlEngine', $existingEngine );
 219                 }
 220
 221                 # Normal user and password are selected after this step, so for now
 222                 # just copy these two
 223                 $wgDBuser = $this->getVar( '_InstallUser' );
 224                 $wgDBpassword = $this->getVar( '_InstallPassword' );
 225         }
 226
 227         /**
 228          * Get a list of storage engines that are available and supported
 229          *
 230          * @return array
 231          */
 232         public function getEngines() {
 233                 $status = $this->getConnection();
 234
 235                 /**
 236                  * @var $conn DatabaseBase
 237                  */
 238                 $conn = $status->value;
 239
 240                 $engines = array();
 241                 $res = $conn->query( 'SHOW ENGINES', __METHOD__ );
 242                 foreach ( $res as $row ) {
 243                         if ( $row->Support == 'YES' || $row->Support == 'DEFAULT' ) {
 244                                 $engines[] = $row->Engine;
 245                         }
 246                 }
 247                 $engines = array_intersect( $this->supportedEngines, $engines );
 248
 249                 return $engines;
 250         }
 251
 252         /**
 253          * Get a list of character sets that are available and supported
 254          *
 255          * @return array
 256          */
 257         public function getCharsets() {
 258                 return array( 'binary', 'utf8' );
 259         }
 260
 261         /**
 262          * Return true if the install user can create accounts
 263          *
 264          * @return bool
 265          */
 266         public function canCreateAccounts() {
 267                 $status = $this->getConnection();
 268                 if ( !$status->isOK() ) {
 269                         return false;
 270                 }
 271                 /**
 272                  * @var $conn DatabaseBase
 273                  */
 274                 $conn = $status->value;
 275
 276                 // Get current account name
 277                 $currentName = $conn->selectField( '', 'CURRENT_USER()', '', __METHOD__ );
 278                 $parts = explode( '@', $currentName );
 279                 if ( count( $parts ) != 2 ) {
 280                         return false;
 281                 }
 282                 $quotedUser = $conn->addQuotes( $parts[0] ) .
 283                         '@' . $conn->addQuotes( $parts[1] );
 284
 285                 // The user needs to have INSERT on mysql.* to be able to CREATE USER
 286                 // The grantee will be double-quoted in this query, as required
 287                 $res = $conn->select( 'INFORMATION_SCHEMA.USER_PRIVILEGES', '*',
 288                         array( 'GRANTEE' => $quotedUser ), __METHOD__ );
 289                 $insertMysql = false;
 290                 $grantOptions = array_flip( $this->webUserPrivs );
 291                 foreach ( $res as $row ) {
 292                         if ( $row->PRIVILEGE_TYPE == 'INSERT' ) {
 293                                 $insertMysql = true;
 294                         }
 295                         if ( $row->IS_GRANTABLE ) {
 296                                 unset( $grantOptions[$row->PRIVILEGE_TYPE] );
 297                         }
 298                 }
 299
 300                 // Check for DB-specific privs for mysql.*
 301                 if ( !$insertMysql ) {
 302                         $row = $conn->selectRow( 'INFORMATION_SCHEMA.SCHEMA_PRIVILEGES', '*',
 303                                 array(
 304                                         'GRANTEE' => $quotedUser,
 305                                         'TABLE_SCHEMA' => 'mysql',
 306                                         'PRIVILEGE_TYPE' => 'INSERT',
 307                                 ), __METHOD__ );
 308                         if ( $row ) {
 309                                 $insertMysql = true;
 310                         }
 311                 }
 312
 313                 if ( !$insertMysql ) {
 314                         return false;
 315                 }
 316
 317                 // Check for DB-level grant options
 318                 $res = $conn->select( 'INFORMATION_SCHEMA.SCHEMA_PRIVILEGES', '*',
 319                         array(
 320                                 'GRANTEE' => $quotedUser,
 321                                 'IS_GRANTABLE' => 1,
 322                         ), __METHOD__ );
 323                 foreach ( $res as $row ) {
 324                         $regex = $conn->likeToRegex( $row->TABLE_SCHEMA );
 325                         if ( preg_match( $regex, $this->getVar( 'wgDBname' ) ) ) {
 326                                 unset( $grantOptions[$row->PRIVILEGE_TYPE] );
 327                         }
 328                 }
 329                 if ( count( $grantOptions ) ) {
 330                         // Can't grant everything
 331                         return false;
 332                 }
 333
 334                 return true;
 335         }
 336
 337         /**
 338          * @return string
 339          */
 340         public function getSettingsForm() {
 341                 if ( $this->canCreateAccounts() ) {
 342                         $noCreateMsg = false;
 343                 } else {
 344                         $noCreateMsg = 'config-db-web-no-create-privs';
 345                 }
 346                 $s = $this->getWebUserBox( $noCreateMsg );
 347
 348                 // Do engine selector
 349                 $engines = $this->getEngines();
 350                 // If the current default engine is not supported, use an engine that is
 351                 if ( !in_array( $this->getVar( '_MysqlEngine' ), $engines ) ) {
 352                         $this->setVar( '_MysqlEngine', reset( $engines ) );
 353                 }
 354
 355                 $s .= Xml::openElement( 'div', array(
 356                         'id' => 'dbMyisamWarning'
 357                 ) );
 358                 $myisamWarning = 'config-mysql-myisam-dep';
 359                 if ( count( $engines ) === 1 ) {
 360                         $myisamWarning = 'config-mysql-only-myisam-dep';
 361                 }
 362                 $s .= $this->parent->getWarningBox( wfMessage( $myisamWarning )->text() );
 363                 $s .= Xml::closeElement( 'div' );
 364
 365                 if ( $this->getVar( '_MysqlEngine' ) != 'MyISAM' ) {
 366                         $s .= Xml::openElement( 'script', array( 'type' => 'text/javascript' ) );
 367                         $s .= '$(\'#dbMyisamWarning\').hide();';
 368                         $s .= Xml::closeElement( 'script' );
 369                 }
 370
 371                 if ( count( $engines ) >= 2 ) {
 372                         // getRadioSet() builds a set of labeled radio buttons.
 373                         // For grep: The following messages are used as the item labels:
 374                         // config-mysql-innodb, config-mysql-myisam
 375                         $s .= $this->getRadioSet( array(
 376                                 'var' => '_MysqlEngine',
 377                                 'label' => 'config-mysql-engine',
 378                                 'itemLabelPrefix' => 'config-mysql-',
 379                                 'values' => $engines,
 380                                 'itemAttribs' => array(
 381                                         'MyISAM' => array(
 382                                                 'class' => 'showHideRadio',
 383                                                 'rel' => 'dbMyisamWarning'
 384                                         ),
 385                                         'InnoDB' => array(
 386                                                 'class' => 'hideShowRadio',
 387                                                 'rel' => 'dbMyisamWarning'
 388                                         )
 389                                 )
 390                         ) );
 391                         $s .= $this->parent->getHelpBox( 'config-mysql-engine-help' );
 392                 }
 393
 394                 // If the current default charset is not supported, use a charset that is
 395                 $charsets = $this->getCharsets();
 396                 if ( !in_array( $this->getVar( '_MysqlCharset' ), $charsets ) ) {
 397                         $this->setVar( '_MysqlCharset', reset( $charsets ) );
 398                 }
 399
 400                 // Do charset selector
 401                 if ( count( $charsets ) >= 2 ) {
 402                         // getRadioSet() builds a set of labeled radio buttons.
 403                         // For grep: The following messages are used as the item labels:
 404                         // config-mysql-binary, config-mysql-utf8
 405                         $s .= $this->getRadioSet( array(
 406                                 'var' => '_MysqlCharset',
 407                                 'label' => 'config-mysql-charset',
 408                                 'itemLabelPrefix' => 'config-mysql-',
 409                                 'values' => $charsets
 410                         ) );
 411                         $s .= $this->parent->getHelpBox( 'config-mysql-charset-help' );
 412                 }
 413
 414                 return $s;
 415         }
 416
 417         /**
 418          * @return Status
 419          */
 420         public function submitSettingsForm() {
 421                 $this->setVarsFromRequest( array( '_MysqlEngine', '_MysqlCharset' ) );
 422                 $status = $this->submitWebUserBox();
 423                 if ( !$status->isOK() ) {
 424                         return $status;
 425                 }
 426
 427                 // Validate the create checkbox
 428                 $canCreate = $this->canCreateAccounts();
 429                 if ( !$canCreate ) {
 430                         $this->setVar( '_CreateDBAccount', false );
 431                         $create = false;
 432                 } else {
 433                         $create = $this->getVar( '_CreateDBAccount' );
 434                 }
 435
 436                 if ( !$create ) {
 437                         // Test the web account
 438                         try {
 439                                 new DatabaseMysql(
 440                                         $this->getVar( 'wgDBserver' ),
 441                                         $this->getVar( 'wgDBuser' ),
 442                                         $this->getVar( 'wgDBpassword' ),
 443                                         false,
 444                                         0,
 445                                         $this->getVar( 'wgDBprefix' )
 446                                 );
 447                         } catch ( DBConnectionError $e ) {
 448                                 return Status::newFatal( 'config-connection-error', $e->getMessage() );
 449                         }
 450                 }
 451
 452                 // Validate engines and charsets
 453                 // This is done pre-submit already so it's just for security
 454                 $engines = $this->getEngines();
 455                 if ( !in_array( $this->getVar( '_MysqlEngine' ), $engines ) ) {
 456                         $this->setVar( '_MysqlEngine', reset( $engines ) );
 457                 }
 458                 $charsets = $this->getCharsets();
 459                 if ( !in_array( $this->getVar( '_MysqlCharset' ), $charsets ) ) {
 460                         $this->setVar( '_MysqlCharset', reset( $charsets ) );
 461                 }
 462
 463                 return Status::newGood();
 464         }
 465
 466         public function preInstall() {
 467                 # Add our user callback to installSteps, right before the tables are created.
 468                 $callback = array(
 469                         'name' => 'user',
 470                         'callback' => array( $this, 'setupUser' ),
 471                 );
 472                 $this->parent->addInstallStep( $callback, 'tables' );
 473         }
 474
 475         /**
 476          * @return Status
 477          */
 478         public function setupDatabase() {
 479                 $status = $this->getConnection();
 480                 if ( !$status->isOK() ) {
 481                         return $status;
 482                 }
 483                 $conn = $status->value;
 484                 $dbName = $this->getVar( 'wgDBname' );
 485                 if ( !$conn->selectDB( $dbName ) ) {
 486                         $conn->query( "CREATE DATABASE " . $conn->addIdentifierQuotes( $dbName ) . "CHARACTER SET utf8", __METHOD__ );
 487                         $conn->selectDB( $dbName );
 488                 }
 489                 $this->setupSchemaVars();
 490
 491                 return $status;
 492         }
 493
 494         /**
 495          * @return Status
 496          */
 497         public function setupUser() {
 498                 $dbUser = $this->getVar( 'wgDBuser' );
 499                 if ( $dbUser == $this->getVar( '_InstallUser' ) ) {
 500                         return Status::newGood();
 501                 }
 502                 $status = $this->getConnection();
 503                 if ( !$status->isOK() ) {
 504                         return $status;
 505                 }
 506
 507                 $this->setupSchemaVars();
 508                 $dbName = $this->getVar( 'wgDBname' );
 509                 $this->db->selectDB( $dbName );
 510                 $server = $this->getVar( 'wgDBserver' );
 511                 $password = $this->getVar( 'wgDBpassword' );
 512                 $grantableNames = array();
 513
 514                 if ( $this->getVar( '_CreateDBAccount' ) ) {
 515                         // Before we blindly try to create a user that already has access,
 516                         try { // first attempt to connect to the database
 517                                 new DatabaseMysql(
 518                                         $server,
 519                                         $dbUser,
 520                                         $password,
 521                                         false,
 522                                         0,
 523                                         $this->getVar( 'wgDBprefix' )
 524                                 );
 525                                 $grantableNames[] = $this->buildFullUserName( $dbUser, $server );
 526                                 $tryToCreate = false;
 527                         } catch ( DBConnectionError $e ) {
 528                                 $tryToCreate = true;
 529                         }
 530                 } else {
 531                         $grantableNames[] = $this->buildFullUserName( $dbUser, $server );
 532                         $tryToCreate = false;
 533                 }
 534
 535                 if ( $tryToCreate ) {
 536                         $createHostList = array(
 537                                 $server,
 538                                 'localhost',
 539                                 'localhost.localdomain',
 540                                 '%'
 541                         );
 542
 543                         $createHostList = array_unique( $createHostList );
 544                         $escPass = $this->db->addQuotes( $password );
 545
 546                         foreach ( $createHostList as $host ) {
 547                                 $fullName = $this->buildFullUserName( $dbUser, $host );
 548                                 if ( !$this->userDefinitelyExists( $dbUser, $host ) ) {
 549                                         try {
 550                                                 $this->db->begin( __METHOD__ );
 551                                                 $this->db->query( "CREATE USER $fullName IDENTIFIED BY $escPass", __METHOD__ );
 552                                                 $this->db->commit( __METHOD__ );
 553                                                 $grantableNames[] = $fullName;
 554                                         } catch ( DBQueryError $dqe ) {
 555                                                 if ( $this->db->lastErrno() == 1396 /* ER_CANNOT_USER */ ) {
 556                                                         // User (probably) already exists
 557                                                         $this->db->rollback( __METHOD__ );
 558                                                         $status->warning( 'config-install-user-alreadyexists', $dbUser );
 559                                                         $grantableNames[] = $fullName;
 560                                                         break;
 561                                                 } else {
 562                                                         // If we couldn't create for some bizzare reason and the
 563                                                         // user probably doesn't exist, skip the grant
 564                                                         $this->db->rollback( __METHOD__ );
 565                                                         $status->warning( 'config-install-user-create-failed', $dbUser, $dqe->getText() );
 566                                                 }
 567                                         }
 568                                 } else {
 569                                         $status->warning( 'config-install-user-alreadyexists', $dbUser );
 570                                         $grantableNames[] = $fullName;
 571                                         break;
 572                                 }
 573                         }
 574                 }
 575
 576                 // Try to grant to all the users we know exist or we were able to create
 577                 $dbAllTables = $this->db->addIdentifierQuotes( $dbName ) . '.*';
 578                 foreach ( $grantableNames as $name ) {
 579                         try {
 580                                 $this->db->begin( __METHOD__ );
 581                                 $this->db->query( "GRANT ALL PRIVILEGES ON $dbAllTables TO $name", __METHOD__ );
 582                                 $this->db->commit( __METHOD__ );
 583                         } catch ( DBQueryError $dqe ) {
 584                                 $this->db->rollback( __METHOD__ );
 585                                 $status->fatal( 'config-install-user-grant-failed', $dbUser, $dqe->getText() );
 586                         }
 587                 }
 588
 589                 return $status;
 590         }
 591
 592         /**
 593          * Return a formal 'User'@'Host' username for use in queries
 594          * @param string $name Username, quotes will be added
 595          * @param string $host Hostname, quotes will be added
 596          * @return String
 597          */
 598         private function buildFullUserName( $name, $host ) {
 599                 return $this->db->addQuotes( $name ) . '@' . $this->db->addQuotes( $host );
 600         }
 601
 602         /**
 603          * Try to see if the user account exists. Our "superuser" may not have
 604          * access to mysql.user, so false means "no" or "maybe"
 605          * @param string $host Hostname to check
 606          * @param string $user Username to check
 607          * @return boolean
 608          */
 609         private function userDefinitelyExists( $host, $user ) {
 610                 try {
 611                         $res = $this->db->selectRow( 'mysql.user', array( 'Host', 'User' ),
 612                                 array( 'Host' => $host, 'User' => $user ), __METHOD__ );
 613
 614                         return (bool)$res;
 615                 } catch ( DBQueryError $dqe ) {
 616                         return false;
 617                 }
 618         }
 619
 620         /**
 621          * Return any table options to be applied to all tables that don't
 622          * override them.
 623          *
 624          * @return String
 625          */
 626         protected function getTableOptions() {
 627                 $options = array();
 628                 if ( $this->getVar( '_MysqlEngine' ) !== null ) {
 629                         $options[] = "ENGINE=" . $this->getVar( '_MysqlEngine' );
 630                 }
 631                 if ( $this->getVar( '_MysqlCharset' ) !== null ) {
 632                         $options[] = 'DEFAULT CHARSET=' . $this->getVar( '_MysqlCharset' );
 633                 }
 634
 635                 return implode( ', ', $options );
 636         }
 637
 638         /**
 639          * Get variables to substitute into tables.sql and the SQL patch files.
 640          *
 641          * @return array
 642          */
 643         public function getSchemaVars() {
 644                 return array(
 645                         'wgDBTableOptions' => $this->getTableOptions(),
 646                         'wgDBname' => $this->getVar( 'wgDBname' ),
 647                         'wgDBuser' => $this->getVar( 'wgDBuser' ),
 648                         'wgDBpassword' => $this->getVar( 'wgDBpassword' ),
 649                 );
 650         }
 651
 652         public function getLocalSettings() {
 653                 $dbmysql5 = wfBoolToStr( $this->getVar( 'wgDBmysql5', true ) );
 654                 $prefix = LocalSettingsGenerator::escapePhpString( $this->getVar( 'wgDBprefix' ) );
 655                 $tblOpts = LocalSettingsGenerator::escapePhpString( $this->getTableOptions() );
 656
 657                 return "# MySQL specific settings
 658 \$wgDBprefix = \"{$prefix}\";
 659
 660 # MySQL table options to use during installation or update
 661 \$wgDBTableOptions = \"{$tblOpts}\";
 662
 663 # Experimental charset support for MySQL 5.0.
 664 \$wgDBmysql5 = {$dbmysql5};";
 665         }
 666 }